CN116251663A - A kind of coal floating and sinking sorting equipment - Google Patents

Abstract

The invention relates to the technical field of coal preparation, in particular to a coal floatation separation equipment. A coal floating-sinking sorting device provided by the present invention includes a machine body, a plurality of sorting medium storage barrels, a sorting mechanism and a conveying mechanism. The sorting mechanism includes a sorting pool; the sorting medium storage barrel stores Sorting medium, and the density of the sorting medium stored in each of the sorting medium storage barrels is different; the body is divided into upper and lower layers, and a plurality of the sorting medium storage barrels are built in the lower layer of the body , the sorting mechanism is installed on the upper layer of the body. The conveying mechanism transports the sorting medium to the sorting tank in order of the density of the sorting medium from high to low for sorting, realizing multi-level sorting, shortening the test steps and reducing the workload. Multiple sorting medium storage barrels are built-in It is located in the lower layer of the body, which can greatly reduce the volume of the equipment and reduce the space occupied by the equipment.

Description

A kind of coal floating and sinking sorting equipment

technical field

The invention relates to the technical field of coal preparation, in particular to coal floatation and separation equipment.

Background technique

The coal floatation test is a test to distinguish coals with different relative densities by using Archimedes' principle and using dense medium suspensions with different relative densities. Through the floating and sinking test, the yield and quality characteristics of different density levels can be obtained, and the selectivity of coal can be understood, thereby providing a technical basis for the design of the coal washing plant to determine the separation method, process flow and equipment requirements.

Coal floating and sinking sorting equipment generally includes structures such as a sorting tank, a density liquid tank, a desliming screen, and a medium separating screen. The density liquid tank stores a sorting medium, and the sorting medium is used for floating and sinking tests. The mud screen removes the dirt on the surface of the coal sample, and the sorting medium in the density liquid tank is transported to the sorting tank through the pipeline system. The coal sample with a density greater than the sorting medium sinks, and the coal sample with a density lower than the sorting medium floats up. The coal that has sunk into the sorting tank is sent to the media removal screen to remove the magnetite powder and coal slime attached to the coal surface.

The test device used for floating and sinking tests generally includes structures such as a sorting tank and a density liquid tank. The density liquid tank is used to prepare the sorting medium, and the sorting medium is used for the floating and sinking test. During the test, the sorting medium in the tank is prepared Transport it to the sorting tank, and just fish out the coal that sinks into the sorting tank. However, the existing test device needs to be manually equipped with sorting media for each test, which cannot be used for multi-density sorting, resulting in cumbersome test steps, heavy workload, high production costs, and occupies most of the space, resulting in equipment failure. The volume is large, and the overall operation efficiency of the equipment is low.

Contents of the invention

(1) The problem to be solved by the present invention is: the existing test device needs to be manually equipped with a sorting medium every time it is tested, and cannot carry out multi-density sorting, resulting in cumbersome test steps, a large workload, and higher production costs, and Occupies most of the space, resulting in a large volume of equipment, and low operating efficiency of the equipment as a whole.

(2) Technical solution

A coal floatation sorting device, including a body, a plurality of sorting medium storage barrels, a sorting mechanism and a conveying mechanism, the sorting mechanism includes a sorting pool;

The sorting medium is stored in the sorting medium storage bucket, and the density of the sorting medium stored in each of the sorting medium storage buckets is different;

The body is divided into upper and lower layers, a plurality of sorting medium storage barrels are built in the lower layer of the body, and the sorting mechanism is installed on the upper layer of the body;

The conveying mechanism communicates with the sorting pool and the sorting medium storage bucket respectively, and the conveying mechanism can transport the sorting medium between the sorting pool and the sorting medium storage bucket.

According to an embodiment of the present invention, a liquid inlet is provided at the bottom of the sorting tank, and the delivery mechanism transports the sorting medium from the liquid inlet into the sorting tank.

According to an embodiment of the present invention, the coal floating-sinking separation equipment further includes an air blast device, the lower end of the sorting medium storage barrel has a liquid outlet pipe, and the air blast device is connected to the liquid outlet pipe and the liquid outlet pipe respectively. The conveying mechanism is connected.

According to an embodiment of the present invention, the conveying mechanism includes an internal circulation assembly, a first end of the internal circulation assembly is connected to the liquid outlet pipe of the sorting medium storage barrel, and a second end of the internal circulation assembly Connected to the top of the sorting medium storage bucket, the internal circulation assembly is used to circulate the sorting medium in the sorting medium storage bucket.

According to an embodiment of the present invention, the conveying mechanism further includes a replenishment assembly and a suspension inlet and outlet assembly, the replenishment assembly communicates with the sorting medium storage bucket, and is used to supply the liquid into the sorting medium storage bucket. choose medium;

The suspension inlet and outlet components are respectively connected with the internal circulation assembly, the replenishment assembly and the sorting tank, and the suspension inlet and outlet components are used to transport the sorting medium in the internal circulation assembly to the The sorting tank or the sorting medium in the sorting tank is returned to the sorting medium storage bucket.

According to an embodiment of the present invention, the sorting mechanism also includes a desliming screen, a desliming sieve and a weighing mechanism. They are sequentially arranged on the upper layer of the body, and a coal sample discharge port is installed on the body, and the discharge end of the weighing mechanism is close to the coal sample discharge port.

According to an embodiment of the present invention, a first high-pressure flushing structure and a second high-pressure flushing structure are respectively installed on the desliming screen and the desliming screen;

The coal floating-sinking separation equipment also includes a water replenishment assembly, and the water replenishment assembly is respectively connected with the replenishment assembly, the first high-pressure flushing structure and the second high-pressure flushing structure.

According to an embodiment of the present invention, a drainage outlet is provided on the separation screen, and the drainage outlet is connected to a recovery pipeline in the factory area.

According to an embodiment of the present invention, the replenishment assembly includes a replenishment main pipe, a plurality of replenishment branch pipes and a plurality of replenishment valve bodies. A supply valve body is installed on each of the supply branch pipes, one end of the supply main pipe communicates with the suspension inlet and outlet assembly, and a second pinch valve is installed at the connection between the supply main pipe and the suspension inlet and outlet assembly .

According to an embodiment of the present invention, the internal circulation assembly includes a circulation pump, a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet of the circulation pump is connected to the lower end of the sorting medium storage barrel through a liquid inlet pipe The liquid outlet of the circulation pump is connected with the upper end of the sorting medium storage barrel through a liquid outlet pipe; a first knife gate valve is installed on the liquid inlet pipe, and a first knife gate valve is installed on the liquid outlet pipe first pinch valve;

The suspension inlet and outlet assembly includes a connected conveying pipe and an interface pipe, the liquid outlet pipe of the internal circulation assembly is connected to the conveying pipe through a connecting branch pipe, and each connecting branch pipe is equipped with The third knife gate valve, the connecting branch pipe is located between the first pinch valve and the circulation pump, one end of the interface pipe is connected to one end of the supply main pipe, the interface pipe and the supply main pipe A second pinch valve is installed at the connection of the mouthpiece, and at least one infusion pipeline is connected between the mouthpiece and the sorting tank.

Beneficial effects of the present invention: a kind of coal floating-sinking sorting equipment provided by the present invention includes a machine body, a plurality of sorting medium storage tanks, a sorting mechanism and a conveying mechanism, and the sorting mechanism includes a sorting pool; the sorting The sorting medium is stored in the medium storage barrel, and the density of the sorting medium stored in each of the sorting medium storage barrels is different; the body is divided into upper and lower layers, and multiple sorting medium storage barrels are built in On the lower layer of the body, the sorting mechanism is installed on the upper layer of the body; the conveying mechanism is respectively connected with the sorting tank and the storage barrel of the sorting medium, and the conveying mechanism can The sorting medium is conveyed between the tank and the sorting medium storage barrel.

During the floating and sinking test, the conveying mechanism transports the sorting medium in one of the sorting medium storage barrels to the sorting pool for sorting the materials. The sorting medium in the pool is transported back to the corresponding sorting medium storage bucket. Moreover, the conveying mechanism sequentially transports the sorting medium into the sorting tank for sorting according to the density of the sorting medium from high to low, so as to realize multi-stage sorting, shorten the test steps, and reduce the workload.

Since the body is divided into upper and lower layers, multiple sorting medium storage barrels are built in the lower layer of the body, and the sorting mechanism is installed on the upper layer of the body, which can greatly reduce the volume of the equipment, reduce the space occupied by the equipment, and the conveying mechanism The length can be controlled, saving costs.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the first perspective view provided by the embodiment of the present invention;

FIG. 2 is a second perspective view provided by an embodiment of the present invention;

Fig. 3 is a structural diagram after removing the shell provided by the embodiment of the present invention;

Fig. 4 is a first perspective view of the sorting medium storage tank, internal circulation assembly, replenishment assembly, suspension inlet and outlet assembly, water replenishment assembly and blowing device provided by the embodiment of the present invention;

Fig. 5 is a second perspective view of the sorting medium storage tank, internal circulation assembly, replenishment assembly, suspension inlet and outlet assembly, water replenishment assembly and blowing device provided by the embodiment of the present invention;

Fig. 6 is a first perspective view of the internal circulation component, the replenishment component and the suspension inlet and outlet component provided by the embodiment of the present invention;

Fig. 7 is a second perspective view of the internal circulation component, the replenishment component and the suspension inlet and outlet component provided by the embodiment of the present invention;

Fig. 8 is a structural diagram of the internal circulation component and part of the suspension inlet and outlet components provided by the embodiment of the present invention;

Fig. 9 is a structural diagram of a replenishment assembly and a water replenishment assembly provided by an embodiment of the present invention;

Fig. 10 is a structural diagram of a sorting medium storage barrel and an air blast device provided by an embodiment of the present invention;

Fig. 11 is a structural diagram of a desliming screen provided by an embodiment of the present invention;

Fig. 12 is a structural diagram of a media separation sieve provided by an embodiment of the present invention;

Fig. 13 is a structural diagram of a weighing mechanism provided by an embodiment of the present invention;

Fig. 14 is a structural diagram of the fishing equipment provided by the embodiment of the present invention.

Icons: 1-machine frame; 101-shell; 102-coal sample outlet; 2-desilting screen; 201-feed inlet; 202-exciting motor; 203-grid sieve plate; Structure; 3-separation tank; 301-main frame; 302-separation tank pool; 303-reduction motor; 304-drive chain sprocket; 305-coal sample scraper; 306-driven chain group; 307-chain sheet Tightener; 308-feeding slot; 4-removal sieve; 401-drainage net mouth; 402-second high-pressure flushing structure; 403-drainage outlet; 5-weighing mechanism; 501-belt weighing conveyor; 502 -baffle; 503-transmission motor; 6-sorting medium storage barrel; 601-density meter; 602-ultrasonic radar; 7-internal circulation component; 701-circulation pump; 702-inlet pipe; -The first knife gate valve; 705-the second knife gate valve; 706-the outlet pipe; 707-the first pinch valve; The second pinch valve; 805-overflow pipe; 806-the third pinch valve; 9-suspension inlet and outlet components; 901-transport pipe; 902-the third knife gate valve; 903-elbow joint; 905-interface; 10-blast device; 1001-blast pipe; 1002-first blast branch pipe; 1003-first blast valve; 1004-second blast branch pipe; 1005-second blast valve; 11- Water supply assembly; 1101-water supply pipe; 1102-first water supply branch pipe; 1103-second water supply branch pipe.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1-14, an embodiment of the present invention provides a kind of coal floatation sorting equipment, including a machine body, a plurality of sorting medium storage barrels 6, a sorting mechanism and a conveying mechanism, and the sorting mechanism includes a sorting mechanism Pool 3; sorting medium is stored in the sorting medium storage barrel 6, and the density of the sorting medium stored in each sorting medium storage barrel 6 is not the same; the body is divided into upper and lower layers, and multiple sorting medium storage barrels 6 is built in the lower layer of the body, and the sorting mechanism is installed on the upper layer of the body; the conveying mechanism is respectively connected with the sorting tank 3 and the sorting medium storage barrel 6, and the conveying mechanism can be connected between the sorting pool 3 and the sorting medium storage barrel 6 Transport the sorting medium between.

In the floating-sinking device provided in this embodiment, when carrying out the floating-sinking test, the conveying mechanism transports the sorting medium in one of the sorting medium storage barrels 6 to the sorting pool 3 for sorting the materials. After the selection is completed, the sorting medium storage barrel 6 transports the sorting medium in the sorting pool 3 back to the corresponding sorting medium storage barrel 6 . Moreover, the conveying mechanism sequentially transports the sorting medium into the sorting tank 3 in order of density of the sorting medium from high to low for sorting, so as to realize multi-stage sorting.

In this embodiment, the body is divided into upper and lower layers, a plurality of sorting medium storage barrels 6 are built in the lower layer of the body, and the sorting mechanism is installed on the upper layer of the body, which can greatly reduce the volume of the equipment and reduce the occupied space of the equipment. space, and the length of the conveying mechanism can be controlled, saving costs.

The floating and sinking device provided according to this embodiment includes a machine body, a plurality of sorting medium storage barrels 6, a sorting mechanism and a conveying mechanism. The sorting medium storage barrel 6 is used for storing the sorting medium, and the sorting medium can be a dense medium suspension, and can also be a zinc chloride solution or other solutions. In this embodiment, the sorting medium is a dense medium suspension, which is a magnetic A non-corrosive mixture of iron ore fines, coal slime and water.

It should be noted that the densities of the sorting media in the plurality of sorting medium storage barrels 6 are different, so as to meet the requirements for sorting media with different densities during the coal float-sink test process.

In this embodiment, the density of the sorting medium in the sorting medium storage barrel 6 is set in gradients, such as densities of 1.8kg/L, 1.7kg/L, 1.6kg/L, 1.5kg/L and 1.4kg/L, etc. . The conveying mechanism is used to convey the storage liquid in the sorting medium storage barrel 6 to the sorting tank 3 in order of density from high to low, for example, the conveying mechanism first conveys the sorting medium with a density of 1.8kg/L to the sorting tank 3. In the separation tank 3, coal samples are then transported to the separation tank 3. The coal with a density less than 1.8kg/L will float on the surface of the separation medium, while the coal with a density greater than 1.8kg/L will sink into the separation tank 3. Afterwards, the coal sample that sinks to the bottom of the sorting tank 3 is fished out through the salvage assembly, and then the conveying mechanism transports the sorting medium with a density of 1.8kg/L back to hold the sorting medium with a density of 1.8kg/L. In the medium storage barrel 6, input the separation medium with a density of 1.7kg/L into the separation tank 3, and repeat the above process until all coal samples are sorted and the test is completed, so as to realize multi-stage separation .

By transporting the sorting media to the sorting tank 3 in order of density gradient from high to low, the accuracy of the test results is ensured, and coal samples with two different densities but higher than the density of the sorting medium are prevented from being salvaged. The components are mixed and fished out of the sorting tank 3 .

Since there are a plurality of sorting medium storage barrels 6 for storing the sorting medium, compared with the prior art, there is no need to manually equip the sorting medium each time, which reduces the participation of people in the floating and sinking test and improves the efficiency of the floating and sinking test. The accuracy of the results realizes automatic multi-density sorting, the test steps are simple, and the workload and production cost are reduced.

Preferably, in the floating and sinking device provided in this embodiment, as shown in Figure 2 and Figure 3, a plurality of sorting medium storage barrels 6 are built in the lower layer of the body, the sorting mechanism is installed on the upper layer of the body, and the bottom of the sorting pool 3 is provided with The liquid inlet, the conveying mechanism transports the sorting medium from the liquid inlet to the sorting tank 3, and choosing to build the sorting medium storage barrel 6 into the lower layer can greatly reduce the volume of the equipment and reduce the space occupied by the equipment.

Preferably, as shown in Figure 4, the coal floating-sinking sorting equipment also includes a blower device 10, the lower end of the sorting medium storage barrel 6 has a liquid outlet pipe, and the blast device 10 is respectively connected with the liquid outlet pipe and the conveying mechanism. Blowing device 10 blows high-pressure gas into the liquid outlet pipe below the sorting medium storage barrel 6 toward the sorting medium storage barrel 6 to generate air bubbles, which helps the circulation of the suspension and prevents the suspension from settling.

Preferably, as shown in Figure 4 and Figure 5, the delivery mechanism includes an internal circulation assembly 7, the first end of the internal circulation assembly 7 is connected to the outlet pipe of the sorting medium storage barrel 6, and the first end of the internal circulation assembly 7 The two ends are connected to the top of the sorting medium storage bucket 6 , and the internal circulation component 7 is used to circulate the sorting medium in the sorting medium storage bucket 6 .

The sorting medium in the sorting medium storage bucket 6 is circulated through the internal circulation assembly 7, so that the sorting medium in the sorting medium storage bucket 6 is continuously left from the liquid outlet at the bottom of the sorting medium storage bucket 6, and then From the top of the sorting medium storage barrel into the sorting medium storage barrel 6, a certain impact and agitation are produced on the sorting medium in the sorting medium storage barrel 6, so that the sorting medium in the sorting medium storage barrel 6 Uniformity ensures uniform density of the sorting medium and prevents precipitation.

Preferably, as shown in FIGS. 5-9 , the conveying mechanism further includes a replenishment assembly 8 and a suspension inlet and outlet assembly 9 , the replenishment assembly 8 communicates with the sorting medium storage barrel 6 for replenishment into the sorting medium storage barrel 6 Sorting medium: the suspension inlet and outlet assembly 9 communicates with the internal circulation assembly 7, the replenishment assembly 8 and the sorting tank 3 respectively, and the suspension inlet and outlet assembly 9 is used to transport the sorting medium in the internal circulation assembly 7 to the separation tank 3 or return the sorting medium in the sorting pool 3 to the sorting medium storage bucket 6 .

When transporting the sorting medium into the sorting tank 3, the sorting medium is first extracted through the internal circulation assembly 7, and then the internal circulation assembly 7 transports the sorting medium to the suspension inlet and outlet assembly 9, and the suspension inlet and outlet assembly 9 will sort The medium is transported to the sorting pool 3 for sorting. After a sorting step is completed, the sorting medium in the sorting tank 3 is transported to the replenishment component 8 through the suspension inlet and exit component 9 , and the sorting structure is returned to the sorting medium storage barrel 6 through the replenishment component 8 .

In this way, the internal circulation component 7 can not only play the role of circulating the suspension, but also pump the suspension in the sorting medium storage tank 6 into the suspension inlet and outlet assembly 9, so that the suspension inlet and outlet assembly 9 can deliver the suspension to the sorting tank 3, there is no need to install a pump body on the suspension inlet and outlet assembly 9. In addition to actively replenishing the suspension in the sorting medium storage tank 6, the replenishment component 8 can also receive the suspension returning from the suspension inlet and outlet component 9 and replenish the suspension into the sorting medium storage tank 6 . The replenishment component 8, the internal circulation component 7 and the suspension inlet and outlet component 9 are used in conjunction with each other to shorten the length of the pipeline and realize multiple functions in one tube.

In this embodiment, the pipeline integration design of the supply component 8, the internal circulation component 7 and the suspension inlet and outlet component 9 reduces the number of pipelines, and one tube is multi-purpose, so that the volume of the equipment is reduced and the operating efficiency of the equipment is improved.

Preferably, the sorting mechanism also includes a desliming screen 2, a desliming screen 4 and a weighing mechanism 5, and the sorting tank 3, the desliming sieve 2, the desliming screen 4 and the belt weighing conveyor 501 are sequentially arranged on the upper layer of the body , A coal sample discharge port 102 is installed on the body, and the discharge end of the weighing mechanism 5 is close to the coal sample discharge port 102 .

Specifically, the desliming screen 2, the sorting tank 3, the descaling screen 4 and the weighing mechanism 5 are arranged along a back shape, which saves space and reduces the floor area of the equipment. The discharge end of the desliming screen 2 is located above the separation tank 3, the coal slime outlet of the separation tank 3 is located above the feed end of the desliming screen 4, and the discharge port of the desliming screen 4 is located at the bottom of the weighing mechanism 5 Above, the discharge end of the weighing mechanism 5 is close to the coal sample discharge port 102 .

Specifically, the desliming screen 2 has a coal sample inlet and a coal sample outlet, and the outlet of the conveyor belt connected to the coal preparation production line of the coal preparation plant is located above the coal sample inlet of the desliming sieve 2. When in use, the coal preparation production line of the coal preparation plant The coal sample on the conveyor belt is directly sent to the conveyor belt, and the coal sample is transported to the desliming screen 2 at the end of the conveyor belt through the conveyor belt. The coal sample inlet of the desliming screen 2 is located below the end of the conveyor belt. The coal sample on the production line is directly put into the desliming screen 2 through the coal sample inlet, and the desliming screen 2 removes the dirt on the surface of the coal sample. The coal sample outlet of the desliming screen 2 is located directly above the separation tank 3, and the separation tank 3 is set with an open opening, and the coal sample is directly put into the sorting tank 3 after the mud is removed by the desliming screen 2.

Preferably, as shown in Figure 1, the body includes a machine frame 1 and a casing 101, the sorting medium storage tank 6 and the circulation pump 701 are installed at the lower end of the machine frame 1, and the desliming screen 2, the sorting tank 3, and the deslagging screen 4 and the weighing mechanism 5 are installed on the upper end of the machine frame 1, and a shell 101 is provided on the side of the machine frame 1, and a plurality of switch doors are installed on the shell 101 to facilitate maintenance of the internal circulation pump 701.

Further, as shown in Figure 14, a salvage equipment is provided in the sorting pool 3, and the salvage equipment includes a coal sample scraper 305, a transmission assembly and a driving part, and the sorting pool 3 includes a main body frame 301 and a sorting tank pool 302, and The tank selection pool 302 is positioned at one end of the main body frame 301, and the driver is positioned at the other end of the body frame 301, and has a sorting tank pool 302, and the side wall of the sorting tank pool 302 is provided with a feeding notch 308, and the driving parts pass through the transmission assembly and The coal sample scraper 305 is connected by transmission, and the driving part drives the coal sample scraper 305 to scrape the material to the discharge port.

In this embodiment, the driving part is a reduction motor 303, and the transmission assembly includes a driving chain sprocket 304 and a driven chain group 306. The driving chain sprocket 304 is driven to rotate by the reduction motor 303 so as to drive the driven chain group 306 to rotate, so that the driving chain The coal sample scraper 305 on the chain sprocket 304 and the coal sample scraper 305 on the driven chain group 306 move, thereby scraping the coal sinking to the bottom of the separation tank 3 to the discharge port. The transmission assembly also includes a chain tensioner 307 for adjusting the tightness of the driven chain set 306 .

When in use, after the sorting is completed, the reduction motor 303 starts, and the coal slime and coal sample scraper 305 at the bottom of the sorting tank 3 is driven by the transmission assembly to move, and the coal sample scraper 305 moves along the bottom wall of the sorting tank 3, and then Moving upward along the side wall of the sorting tank 3, the material moves to the discharge port under the action of the coal sample scraper 305.

In this embodiment, one of the side walls of the sorting pool 3 is inclined to facilitate scraping by the coal sample scraper 305 . Moreover, in order to ensure no material leakage, the width of the coal sample scraper 305 is also required to be equal to the width of the separation tank 3 . One of the side walls of the sorting pool 3 is inclined, that is, the section of the sorting pool 3 perpendicular to the coal sample scraper 305 is trapezoidal, and the discharge port is formed at the end of the inclined side wall. When in use, the coal sample scraper 305 moves along the bottom wall of the sorting tank 3 and the inclined side walls to scrape the materials in the sorting tank 3 to the discharge port.

Preferably, as shown in Figure 13, the weighing mechanism 5 is used to measure the weight of coal. By measuring the weight of coal samples with different densities, it is convenient for subsequent processes, such as burning ash or other assays.

Optionally, the weighing mechanism 5 is a belt weighing conveyor 501, which includes a baffle plate 502 and a drive motor 503. Its structure, principle and usage method are well-known technologies in the art, and will not be repeated here.

Preferably, a first high-pressure flushing structure 204 and a second high-pressure flushing structure 402 are respectively installed on the desliming screen 2 and the medium-removing screen 4, and the coal floating-sinking separation equipment also includes a replenishment assembly 11, which is connected to the replenishment assembly 8, The first high-pressure flushing structure 204 is connected to the second high-pressure flushing structure 402 .

Wherein, the first high-pressure washing structure 204 is used to wash away the dirt on the surface of the coal sample on the desliming screen 2, and the second high-pressure washing structure 402 is used to wash away the magnetite powder and coal slime attached to the surface of the coal sample.

The coal floating and sorting equipment also includes a replenishment assembly 11 , as shown in FIG. 8 , the replenishment assembly 11 communicates with the replenishment assembly 8 , the first high-pressure flushing structure 204 and the second high-pressure flushing structure 402 respectively.

In this way, the first high-pressure flushing structure 204 can be supplied with water by the water replenishment assembly 11, thereby washing off the dirt on the coal sample surface on the mud removal screen 2, and the second high-pressure flushing structure 402 can be supplied with water to flush out the magnetite powder attached to the coal sample surface and coal slime, and finally water can also be input into the supply assembly 8, thereby flowing from the supply assembly 8 into the sorting medium storage barrel 6, replenishing water for the sorting medium storage barrel 6, and adjusting the density of the sorting medium.

Preferably, as shown in Figure 12, the mediation sieve 4 includes a vibrating motor, a drainage outlet 401, a second high-pressure flushing structure 402 and a drainage outlet 403, the vibration motor drives the mediating sieve 4 to vibrate, and the second high-pressure flushing structure 402 vibrates the coal Wash the surface of the coal surface to separate the magnetite powder and coal slime attached to the coal surface from the coal. The magnetite powder, coal slime and water flow into the drainage outlet 403 from the drainage network port 401 to be discharged, and the drainage outlet 403 is connected to the recovery pipeline of the factory area Inside, waste water, waste liquid, magnetite powder and coal slime are recycled, and after subsequent treatment, magnetite powder is finally recovered. Wherein it may be in the shape of a long tube, and a plurality of spray heads are arranged on the long tube along the length direction of the long tube.

Preferably, as shown in Figure 11, the desliming screen 2 includes a material inlet 201, a mesh sieve plate 203, a first high-pressure flushing structure 204, and an exciting motor 202, and the exciting motor 202 drives the mesh sieve plate 203 to vibrate, and the second A high-pressure flushing structure 204 is installed on the side of the desliming screen 2 to flush the coal sample. The specific first high-pressure flushing structure 204 can be in the shape of a long tube, and a plurality of nozzles are arranged on the long tube along the length direction of the long tube. A high-pressure washing structure 204 washes away the dirt on the surface of the coal sample.

Preferably, since the sorting medium storage barrel 6 is arranged below the sorting pool 3, the sorting medium automatically flows into the suspension inlet and outlet assembly 9 under the influence of gravity, and further From the suspension inlet and outlet assembly 9, it flows back into the replenishment assembly 8, and finally replenishes from the replenishment assembly 8 into the sorting medium storage barrel 6, so that there is no need to set up a separate pump body, which saves electricity.

Preferably, a funnel-shaped flow channel is formed at the lower end of the sorting medium storage barrel 6, a liquid outlet is formed at the bottom of the flow channel, and a high-pressure tuyere is arranged on the inner wall of the flow channel, and the blast device 10 is connected to the high-pressure tuyere. Connected, the blower device 10 blows high-pressure gas into the high-pressure tuyere to generate bubbles, which helps the circulation of the suspension and prevents the suspension from settling.

In addition, the blower device 10 is also in communication with the suspension inlet and outlet assembly 9, and then the high-pressure gas can enter the suspension inlet and outlet assembly 9 to enter the internal circulation assembly 7 and the replenishment assembly 8, and the suspension inlet and outlet assembly 9, the replenishment assembly 8 and the internal circulation assembly 7 to perform backwashing to clean up the residues in the pipeline.

Preferably, as shown in FIG. 10 , there are three sorting medium storage barrels 6 , and a density meter 601 and an ultrasonic radar 602 are installed in each sorting medium storage barrel 6 . Wherein, the density meter 601 is used to detect the density of the sorting medium in the sorting medium storage barrel 6 , and the ultrasonic radar 602 is used to detect the liquid level of the sorting medium in the sorting medium storage barrel 6 . By setting the density meter 601 to monitor the density of the sorting medium, it is judged whether the density of the sorting medium in the sorting medium storage barrel 6 is at a preset value, which is convenient for timely adjustment and ensures the accuracy of sorting. By setting the ultrasonic radar 602 to monitor the liquid level of the sorting medium, it is convenient to judge whether the liquid level in the sorting medium storage barrel 6 reaches the preset value, so as to facilitate timely replenishment of the sorting medium and timely stop of replenishing water or stopping replenishment Select media.

Optionally, the ultrasonic radar 602 can also be replaced by a liquid level gauge.

Optionally, the number of sorting medium storage buckets 6 can be flexibly adjusted according to needs, for example, six or eight are set.

Preferably, as shown in Figure 5 and Figure 6, there are three internal circulation assemblies 7, each of which includes a circulation pump 701, a liquid inlet pipe 702 and a liquid outlet pipe 706, and the liquid inlet of the circulation pump 701 is connected to the liquid inlet. One end of the pipe 702 is connected, the other end of the liquid inlet pipe 702 is connected with the lower end of the sorting medium storage barrel 6, and the liquid outlet of the circulating pump 701 is connected with the upper end of the sorting medium storage barrel 6 through a liquid outlet pipe 706 A first knife gate valve 704 is installed on the liquid inlet pipe 702, and a first pinch valve 707 is installed on the liquid outlet pipe 706.

By turning on the circulating pump 701, the first knife gate valve 704 and the first pinch valve 707, the circulating pump 701 pumps the sorting medium in the sorting medium storage barrel 6 into the liquid inlet pipe 702 and then flows back again from the liquid outlet pipe 706 In the sorting medium storage barrel 6, a complete cycle is completed, and a certain impact and stirring effect are generated on the sorting medium in the sorting medium storage barrel 6, so that the sorting medium in the sorting medium storage barrel 6 is uniform, ensuring The density of the sorting medium is uniform.

Optionally, a sewage discharge pipe is also connected on the liquid inlet pipe 702, and a second knife gate valve 705 is installed on the sewage pipe 703. The suspension needs to be replaced regularly after being used for a certain period of time, so a sewage pipe 703 is provided to discharge the old When sorting the medium, the circulating pump 701, the first knife gate valve 704 and the second knife gate valve 705 are turned on, and then the first pinch valve 707 is closed, and the sewage enters the sewage pipe 703 and is discharged.

Preferably, as shown in Figures 6 and 7, the supply assembly 8 includes a supply main pipe 801, three supply branch pipes 802 and three supply valve bodies 803, one end of the supply main pipe 801 is the sorting medium supply inlet, and the other end is connected to the suspension The liquid inlet and outlet components 9 are connected, and three supply branch pipes 802 are installed on the supply main pipe 801 in sequence, wherein, the first supply branch pipe 802 communicates with the first sorting medium storage barrel 6, and the second supply branch pipe 802 communicates with the third supply branch pipe 802. The first sorting medium storage barrel 6 is connected, the third supply branch pipe 802 is connected with the second sorting medium storage barrel 6 , and each supply branch pipe 802 is equipped with a supply valve body 803 .

What needs to be known is that the supply main pipe 801 is connected to the suspension supply equipment in the dense medium workshop, so that the suspension is supplied to the supply main pipe 801.

Pump the sorting medium into the sorting medium supply inlet at one end of the supply main pipe 801, and then selectively open the supply valve body 803 on the three supply branch pipes 802 to supply the sorting medium in the sorting medium storage barrel 6, which can be Simultaneously open the replenishment valve body 803 and fill in the sorting medium towards the three sorting medium storage barrels 6 at the same time, and also fill in the sorting medium towards the three sorting medium storage barrels 6 in turn, and the specific conditions can be set flexibly.

What needs to be known is that a solenoid valve is also installed on the supply main pipe 801, and the solenoid valve is arranged between the sorting medium supply inlet and the first supply branch pipe 802. When the suspension returns from the sorting tank 3 to the supply main pipe 801 , close the electromagnetic valve, the suspension can only flow into the sorting medium storage barrel 6 from the supply branch pipe 802, and will not flow to the supply inlet of the supply main pipe 801.

Preferably, as shown in Figure 7, Figure 8 and Figure 9, the suspension inlet and outlet assembly 9 includes a delivery pipe 901, an elbow joint 903 and a mouthpiece 904 connected in sequence, wherein the first end of the delivery pipe 901 is connected to the first The outlet pipe 706 of the first circulation pump 701 is connected, and its other end is connected with the elbow joint 903. According to Fig. 7, the left end of the delivery pipe 901 is connected with the outlet pipe 706 of the first circulation pump 701, Its right end is connected with elbow joint 903. One end of the mouthpiece 904 is connected to the elbow joint 903 , and the other end is connected to the supply main pipe 801 .

Further, the outlet pipes 706 of the remaining two circulation pumps 701 are connected to the delivery pipe 901 through pipelines. For the convenience of description, the pipeline between the second circulation pump 701 and the delivery pipe 901 is called the first pipeline , the pipeline between the third circulation pump 701 and the delivery pipe 901 is called the second pipeline, wherein the first pipeline, the second pipeline and the delivery pipe 901 are connected to the outlet pipe 706 of the first circulation pump 701 One end is equipped with a third knife gate valve 902, specifically, the connection between the left end of the delivery pipe 901 and the liquid outlet pipe 706 of the first circulation pump 701 is located at the liquid outlet end of the first circulation pump 701 and the first pinch pipe Between the valves 707, the joint between the first pipeline and the liquid outlet pipe 706 of the second circulating pump 701 is located between the liquid outlet of the second circulating pump 701 and the first pinch valve 707 on the second circulating pump 701 Between the second pipe and the outlet pipe 706 of the third circulation pump 701 is located between the outlet end of the third circulation pump 701 and the first pinch valve 707 on the third circulation pump 701 .

Further, a second pinch valve 804 is installed at the connection between the interface pipe 904 and the supply main pipe 801, and a plurality of interfaces 905 are arranged on the interface pipe 904, and a pipeline is installed on the interface 905, and the other end of the pipeline is connected to the sorting tank 3 connected.

In this way, when the sorting medium is delivered to the sorting tank 3, it is necessary to open the first knife gate valve 704 on the circulating pump 701, close the second knife gate valve 705, close the first pinch valve 707, and then open the corresponding third knife gate valve 902 and close the second pinch valve 804, the circulation pump 701 will extract the sorting medium in the sorting medium storage tank 6 into the delivery pipe 901, and the sorting medium will further enter the interface pipe 904 and then flow through the pipeline on the interface 905 Flow into the sorting pool 3 to complete the sorting medium replenishment work to the sorting pool 3.

Optionally, a gate valve is installed at the elbow joint 903 to cut off the elbow joint 903, so that the sorting medium will not enter the elbow joint 903 when the sorting medium is returned.

In addition, after a sorting work in the sorting tank 3 is completed, close the three third knife gate valves 902 or close the gate valve on the elbow joint 903, then open the second pinch valve 804, and close the solenoid valve on the supply main pipe 801 , correspondingly open the replenishment valve body 803 on the replenishment branch pipe 802, since the sorting tank 3 is arranged above the sorting medium storage barrel 6, under the action of gravity, the sorting medium in the sorting tank 3 will naturally flow to the slave port The pipeline on 905 flows into the interface pipe 904. Due to the action of inertia and impact force, the sorting medium further flows from the interface pipe 904 to the supply main pipe 801, then flows from the supply main pipe 801 to the supply branch pipe 802, and finally flows to Corresponding sorting medium storage bucket 6.

It should be noted here that if the sorting medium in the first sorting medium storage barrel 6 is delivered to the sorting pool 3, after the sorting work in the sorting pool 3 is completed, only the The replenishment valve body 803 on the replenishment branch pipe 802 that is connected with the sorting medium storage barrel, and closes other two replenishment valve bodies 803, makes the sorting medium in the first sorting medium storage barrel 6 flow back to the first sorting medium again. Select in the medium storage barrel 6.

Optionally, as shown in FIG. 5 , the mouthpiece 904 is mouth-shaped, and it is composed of four connected pipes, which are two first round pipes and two second round pipes respectively. Both ends are sealed, two first round tubes are arranged symmetrically, two second round tubes are symmetrically connected between the two first round tubes to form a mouth shape, and one of the first round tubes is connected to the elbow joint 903 The other first round pipe is connected with the supply main pipe 801, and the two second round pipes are respectively provided with three interfaces 905, a total of six interfaces 905, which can increase the transport efficiency of the sorting medium.

Preferably, as shown in Figure 7, the supply main pipe 801 is connected with an overflow pipe 805, and the other end of the overflow pipe 805 is connected with the sorting tank 3, and the overflow pipe 805 is located between the third supply branch pipe 802 and the second clip. Between the pipe valves 804, a third pinch valve 806 is installed on the overflow pipe 805.

Optionally, a tee is connected between the second pinch valve 804 and one end of the supply main pipe 801 , and the other opening of the tee is connected with the overflow pipe 805 .

Specifically, a liquid level gauge is provided in the sorting tank 3. After the sorting medium is replenished in the sorting tank 3, the coal sample is transported in the sorting tank 3. As the amount of the coal sample increases gradually, the liquid The level will gradually rise until it almost overflows. At this time, the third pinch valve 806 on the overflow pipe 805 can be opened, the second pinch valve 804 and the solenoid valve on the supply main pipe 801 can be closed, and then the supply on the corresponding supply branch pipe 802 can be opened. The valve body 803, the overflowing sorting medium in the sorting tank 3 flows from the overflow pipe 805 to the supply main pipe 801, and finally flows into the corresponding sorting medium storage barrel 6, avoiding the overflow of the sorting medium from the sorting tank 3 Waste of sorting media.

Preferably, as shown in FIG. 10 , the blowing device 10 includes a connected blowing pipe 1001, three first blowing branch pipes 1002 and a second blowing branch pipe 1004, wherein the three first blowing branch pipes 1002 are respectively Connected between the blast pipe 1001 and the three sorting medium storage barrels 6, the second blast branch pipe 1004 is connected between the blast pipe 1001 and the conveying pipe 901, between the first blast branch pipe 1002 and the second blast branch pipe 1004 is respectively installed with a first blast valve 1003 and a second blast valve 1005 .

The inner wall of the flow channel at the lower end of the sorting medium storage barrel 6 is provided with a high-pressure tuyere, and the first blast branch pipe 1002 is connected to the high-pressure tuyere, and the blast device 10 blows high-pressure gas into the high-pressure tuyere through the first blast branch pipe 1002 to generate bubbles. Conducive to the circulation of the suspension, the high-pressure gas can enter the delivery pipe 901 to enter the internal circulation component 7 and the supply component 8, and backwash the suspension entry and exit component 9, the supply component 8 and the internal circulation component 7.

Preferably, as shown in Figure 9, the water supply assembly 11 includes a water supply pipe 1101, a first water supply branch pipe 1102 and a second water supply branch pipe 1103, and one end of the water supply pipe 1101 is a water inlet, and the other end thereof is connected to the second water supply pipe on the media removal screen 4. The high-pressure flushing structure 402 is connected, the second water supply branch pipe 1103 is connected between the water supply pipe 1101 and the supply assembly 8, the first water supply branch pipe 1102 is connected between the water supply pipe 1101 and the first high-pressure flushing structure 204, the first water supply branch pipe 1102, Valves are installed at the water outlets of the second water supply branch pipe 1103 and the water supply pipe 1101 .

When sorting, open the valve on the first water replenishing branch pipe 1102, open the valve at one end of the water replenishing pipe 1101, then close the valve on the second water replenishing branch pipe 1103, and water flows from the first water replenishing branch pipe 1102 to the desilting screen 2. In the first high-pressure flushing structure 204 , water flows from one end of the water supply pipe 1101 to the second high-pressure flushing structure 402 on the media removal screen 4 . The water supply assembly 11 can supply water to the first high-pressure flushing structure 204, thereby flushing away the dirt on the coal sample surface on the mud removal screen 2, and can supply water to the second high-pressure flushing structure 402 so as to flush out the magnetite powder and the adhering to the coal sample surface. slime.

When it is necessary to adjust the replenishment of water in the sorting medium storage barrel 6, close the valve on the first replenishment branch pipe 1102, close the valve at one end of the replenishment pipe 1101, open the solenoid valve on the replenishment main pipe 801, and close the second pinch valve 804 and The third pinch valve 806 opens the corresponding replenishment valve body 803, water flows into the replenishment branch pipe 802 from the second replenishment branch pipe 1103, thereby flows into the corresponding sorting medium storage barrel 6 from the corresponding replenishment branch pipe 802, realizing Water replenishment is carried out for the sorting medium storage barrel 6, and the density of the sorting medium is adjusted. The water replenishment component 11 has multiple functions in one tube, that is, it can supply water to the desliming screen 2 and the media removal screen 4, and can also replenish water to the storage tank 6 of the sorting medium, and the water replenishment component 11 sends water into the replenishment component 8 , and then use the replenishment assembly 8 to replenish water, which shortens the pipeline and saves the cost.

Optionally, in this embodiment, the floating and sinking device includes a control system, the control system is connected with the density meter 601, the ultrasonic radar 602 and various valves on the pipeline system, and the sorting medium storage tank 6 monitored by the density meter 601 The density of the sorting medium inside is fed back to the control system, and the liquid level of the sorting medium in the sorting medium storage barrel 6 detected by the ultrasonic radar 602 is fed back to the control system, and the control system controls each valve to perform linkage.

Optionally, a sorting medium circulation mechanism is arranged in the sorting tank 3, and the sorting medium circulating mechanism includes a delivery pump, the liquid inlet of the delivery pump is connected with the liquid outlet above the sorting tank 3 through a pipeline, and the delivery pump’s The liquid outlet is connected to the liquid inlet at the bottom of the sorting tank 3 through a pipeline, and the sorting medium in the sorting tank 3 is circulated through the sorting medium circulation mechanism, so that the sorting medium in the sorting tank 3 is continuously Leaving the sorting tank 3 from the liquid outlet, and then entering the sorting tank 3 through the liquid inlet at the bottom of the sorting tank 3, it can also produce a certain impact and agitation on the sorting medium in the sorting tank 3, so that The sorting medium in the sorting tank 3 is uniform, avoiding the precipitation of coal slime and magnetite powder, and ensuring the accuracy of the sorting result.

The floating-sinking device that the embodiment of the present invention provides takes the sorting medium as a dense medium suspension as an example. During use, at first, the dense medium suspension of configured different densities (being the mixing of magnetite powder, coal slime and water) liquid) are respectively installed in the corresponding sorting medium storage barrels 6, and at the same time, the internal circulation assembly 7 is opened to circulate the suspension to avoid the precipitation of magnetite powder and coal slime. Taking the density of the sorting medium in the three sorting medium storage barrels 6 as 1.8kg/L, 1.6kg/L and 1.4kg/L as an example, firstly open the first knife gate valve 704 on the corresponding circulation pump 701, Close the second knife gate valve 705, close the first pinch valve 707, open the corresponding third knife gate valve 902 and close the second pinch valve 804, and the corresponding circulating pump 701 will separate the 1.8kg/L The dense medium suspension is pumped into the delivery pipe 901, and the 1.8kg/L dense medium suspension further enters the interface pipe 904 and then flows into the separation tank 3 from the pipeline on the interface 905. At the same time, the coal preparation plant The coal sample is put into the sorting tank 3 after the mud is removed by the desliming screen 2, and the coal with a density higher than 1.8kg/L begins to sink into the bottom of the sorting tank 3, and the salvage equipment will sink the coal at the bottom of the sorting tank 3 The sample is scraped to 4 places of the medium-removing sieve, and the medium-removing sieve 4 works to separate the coal sample from the coal slime and the magnetite powder. When all the coal with a density higher than 1.8kg/L all sank into the bottom of the sorting tank 3, the salvage equipment stopped working. Then close the three third knife gate valves 902 or close the gate valve on the elbow joint 903, open the second pinch valve 804, close the solenoid valve on the supply main pipe 801, and correspondingly open the heavy-duty valve with a density of 1.8kg/L. The supply valve body 803 on the sorting medium storage barrel 6 of medium suspension, because the sorting pool 3 is arranged on the top of the sorting medium storage barrel 6, under the action of gravity, the weight of 1.8kg/L in the sorting pool 3 The medium suspension naturally flows from the pipeline on the interface 905 to the interface pipe 904, and under the action of inertia and impact force, the 1.8kg/L dense medium suspension further flows from the interface pipe 904 to the supply main pipe 801 , then flow from the supply main pipe 801 to the supply branch pipe 802 and finally flow to the sorting medium storage tank 6 that is filled with a dense medium suspension with a density of 1.8kg/L, and prepare to switch the sorting medium with a density of 1.6kg/L at the same time, Inject the sorting medium with a density of 1.6kg/L into the sorting tank 3, and then repeat the above process until all the coal samples with a density greater than 1.6kg/L, a density greater than 1.4kg/L and a density less than 1.4kg/L are collected. Just sort.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "communication", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; may be mechanically connected, may also be electrically connected; may be directly communicated, may also be indirectly communicated through an intermediary, and may be internally communicated between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (10)

1. The coal floating and sinking separation equipment is characterized by comprising a machine body, a plurality of separation medium storage barrels (6), a separation mechanism and a conveying mechanism, wherein the separation mechanism comprises a separation tank (3);

sorting media are stored in the sorting media storage barrels (6), and the density of the sorting media stored in each sorting media storage barrel (6) is different;

the machine body is divided into an upper layer and a lower layer, a plurality of sorting medium storage barrels (6) are arranged in the lower layer of the machine body, and the sorting mechanism is arranged on the upper layer of the machine body;

the conveying mechanism is respectively communicated with the sorting pool (3) and the sorting medium storage barrel (6), and can convey sorting mediums between the sorting pool (3) and the sorting medium storage barrel (6).

2. The coal floating and sinking separation device according to claim 1, wherein a liquid inlet is arranged at the bottom of the separation tank (3), and the conveying mechanism conveys separation media from the liquid inlet into the separation tank (3).

3. The coal sink and float separation equipment according to claim 1, further comprising a blast device (10), wherein a liquid outlet pipe is arranged at the lower end of the separation medium storage barrel (6), and the blast device (10) is respectively communicated with the liquid outlet pipe and the conveying mechanism.

4. The coal sink-and-float separation device according to claim 1, wherein the conveying mechanism comprises an inner circulation assembly (7), a first end of the inner circulation assembly (7) is connected with a liquid outlet pipe of the separation medium storage barrel (6), a second end of the inner circulation assembly (7) is connected with the top of the separation medium storage barrel (6), and the inner circulation assembly (7) is used for circulating separation medium in the separation medium storage barrel (6).

5. The coal sink and float separation apparatus of claim 4 wherein said conveyor means further includes a replenishment assembly (8) and a suspension inlet and outlet assembly (9), said replenishment assembly (8) being in communication with said separation medium storage tank (6) for replenishing separation medium into said separation medium storage tank (6);

the suspension inlet and outlet assembly (9) is respectively communicated with the inner circulation assembly (7), the replenishing assembly (8) and the sorting tank (3), and the suspension inlet and outlet assembly (9) is used for conveying sorting media in the inner circulation assembly (7) into the sorting tank (3) or refluxing the sorting media in the sorting tank (3) into the sorting media storage barrel (6).

6. The coal floating and sinking separation device according to claim 5, wherein the separation mechanism further comprises a desliming screen (2), a desliming screen (4) and a weighing mechanism (5), the separation tank (3), the desliming screen (2), the desliming screen (4) and the weighing mechanism (5) are sequentially arranged on the upper layer of the machine body, a coal sample discharge port (102) is arranged on the machine body, and the discharge end of the weighing mechanism (5) is close to the coal sample discharge port (102).

7. The coal floating and sinking separation equipment according to claim 6, wherein a first high-pressure flushing structure (204) and a second high-pressure flushing structure (402) are respectively arranged on the desliming screen (2) and the medium-removing screen (4);

the coal sink-float separation equipment further comprises a water supplementing assembly (11), and the water supplementing assembly (11) is respectively connected with the water supplementing assembly (8), the first high-pressure flushing structure (204) and the second high-pressure flushing structure (402).

8. The coal sink-float separation equipment according to claim 7, wherein the medium-removing sieve (4) is provided with a drainage outlet (403), and the drainage outlet (403) is connected with a factory recovery pipeline.

9. The coal sink-and-float separation device according to claim 5, wherein the replenishment assembly (8) comprises a replenishment main pipe (801), a plurality of replenishment branch pipes (802) and a plurality of replenishment valve bodies (803), the plurality of separation medium storage barrels (6) are communicated with the replenishment main pipe (801) through the replenishment branch pipes (802), the replenishment valve bodies (803) are mounted on each replenishment branch pipe (802), one end of the replenishment main pipe (801) is communicated with the suspension inlet and outlet assembly (9), and a second pinch valve (804) is mounted at the joint of the replenishment main pipe (801) and the suspension inlet and outlet assembly (9).

10. The coal floating and sinking separation device according to claim 9, wherein the internal circulation assembly (7) comprises a circulation pump (701), a liquid inlet pipe (702) and a liquid outlet pipe (706), a liquid inlet of the circulation pump (701) is communicated with the lower end of the separation medium storage barrel (6) through the liquid inlet pipe (702), and a liquid outlet of the circulation pump (701) is communicated with the upper end of the separation medium storage barrel (6) through the liquid outlet pipe (706); a first knife gate valve (704) is arranged on the liquid inlet pipe (702), and a first pinch valve (707) is arranged on the liquid outlet pipe (706);

the suspension business turn over subassembly (9) are including conveyer pipe (901) and interface pipe (904) that are connected, internal circulation subassembly (7) drain pipe (706) with be connected through connecting branch pipe between conveyer pipe (901), every connect and all install third knife gate valve (902) on the branch pipe, connect the branch pipe to be located first pinch valve (707) with between circulating pump (701), the one end of interface pipe (904) with the one end of supply main pipe (801) is connected, interface pipe (904) with the junction of supply main pipe (801) installs second pinch valve (804), interface pipe (904) with be connected with an infusion pipeline at least between sorting pond (3).

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