JPH06299570A - Sludge pumping device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a sludge pumping device that removes rocks and foreign substances from sludge and earth and sand and efficiently pumps them in large quantities to remote areas. [Configuration] A primary vibrating screen 20 having a hopper 20a, and
A secondary vibrating screen 30, a jet nozzle device 200 for spraying high-pressure jet water onto the secondary vibrating screen 30, a mud tank 50 equipped with a stirring device 50a, and a vertical screw conveyor 70 whose lower end is buried in the mud tank. , Discharge pipe 80 and discharge pipe 8
A sledro pumping device comprising a pressurizing pump 90 arranged in the middle of 0 and an ejector 100 for pumping compressed air, wherein the jet nozzle device 200 comprises a plurality of fixed jet nozzles 40a intersecting the material flow. , Or
It is provided with a plurality of movable jet nozzles 40b attached to a horizontal movable tube 40B or a movable arm that swivels around a vertical axis.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sludge pumping device for pneumatically transporting sediment and sludge to a remote place while selectively removing rocks and other foreign matter from sediment and sludge collected at a mining site or a dredging site, and particularly to clay. The present invention relates to a sludge pumping device suitable for treating mud containing a large amount of lumps.

[0002]

2. Description of the Related Art In addition to clay, rocks, sludge, rubber tires, wood chips, plastics, and other foreign substances are often mixed with clays collected at mining sites and dredging sites.
As a device for selecting and removing rocks and foreign substances from these clays and transporting them, conventionally, as shown in FIG. 6, for example, as shown in FIG. Rocks and foreign substances are transferred by the waste discharge conveyor 9, and the clay under the sieve is extracted from the two discharge ports of the hopper 3 by the screw feeder 4, and the inlet valve 5 and the outlet valve 7 are arranged in front and rear. After alternately storing in the pressure-feeding tank 6, the compressed air is fed through the discharge pipe 8 by pressure. In addition, as shown in FIG. 7, after the clay received in the vibrating screen 2 is sorted out for foreign matters, three hoppers (upper hopper 3a, intermediate hopper 3b,
A conventional method has also been practiced in which the lower hopper 3c) is sequentially flown down, and each is conveyed by the screw feeder 4 while being discharged by the pressure pump 10 and blowing compressed air from the ejector 8a into the discharge pipe 8 to convey the compressed air.

[0003]

However, in both the methods shown in FIGS. 6 and 7, the vibrating screen 2 is only one place and the mesh of the vibrating screen 2 cannot be so large. Therefore, rocks and other foreign matter are not formed. Since it is difficult to transfer the clay and the large lump of clay cannot pass through the mesh, it is difficult to discharge the target under-sieve product, the screening efficiency of the vibrating sieve is poor, and There was an inconvenience that the crushing was not performed sufficiently.

[0004]

In order to solve the above-mentioned problems, in the present invention, a primary vibrating sieve having a hopper for receiving sludge and a secondary vibrating sieve arranged immediately below the primary vibrating sieve are provided. And a jet nozzle device which is arranged directly above the secondary vibrating screen and which sprays high-pressure jet water onto the clay mass on the secondary vibrating screen, and a mud tank provided directly below the secondary vibrating screen and equipped with an agitator inside. And a vertical screw conveyor whose bottom end is buried in the mud tank and rises vertically or inclined, a discharge pipe connected to the discharge port of the vertical screw conveyor, a pressure pump installed in the middle of the discharge pipe, and A sledro pressure feeding device comprising an ejector for feeding compressed air, wherein the jet nozzle device comprises at least one row of fixed jet nozzles arranged in a plurality intersecting the material advancing direction of the secondary vibrating screen. Or 2 And configured to include a plurality of jet nozzles in a substantially horizontal movable tube or movable arm pivoting reciprocating any angle in the range of supports disposed laterally as a rotation shaft of the vibrating screen.

[0005]

Since the sludge pumping device of the present invention comprises the upper and lower vibrating screens, the primary vibrating screen can have a larger mesh than the mesh of the secondary vibrating screen. Therefore, rocks and foreign substances can be transferred smoothly on the vibrating screen. Most of the clay lumps that have passed through the primary vibrating sieve are crushed by the impact when they fall onto the secondary oscillating sieve, and the uncrushed clay lumps are crushed by the jet of high-pressure water, and the secondary vibration Pass through the sieve. In this way, the sediment and sludge that have fallen and accumulated in the clay tank are agitated and transferred, discharged through a vertical screw conveyor by a pressurizing pump, and then plugged by compressed air in the discharge pipe. In particular, for clay lumps that are difficult to pass through the secondary vibrating sieve, not only a fixed jet nozzle but also a movable jet nozzle is provided to partition the clay lumps and perform sufficient crushing to facilitate passage through the vibrating sieve. Considered to do.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 5 relate to an embodiment of the present invention,
1 is an overall side view of the sludge pumping device, FIG. 2 is a perspective view of the jet nozzle device, and FIG. 3 is a jet nozzle device and 2
FIG. 4 is a plan view of a secondary vibrating screen, FIG. 4 is a vertical sectional view of a jet nozzle device, and FIG. 5 is a vertical sectional view of a jet nozzle device showing another embodiment.

In the figure, the sludge pumping device 1 is provided with a primary oscillating sieve 20 equipped with a hopper 20a for receiving earth and sand and sludge (hereinafter referred to as treated material) by a backhoe 18 and a position 2 to 3 m below the primary oscillating sieve 20. It is composed of a secondary vibrating screen 30 arranged, a mud soil tank 50 provided below it, a vertical screw conveyor 70 whose bottom end is buried in the mud soil tank 50 and rises vertically or at an inclination, and a pressure feeding device below it. . Immediately above the screen of the secondary vibrating screen 30, as shown in FIG. 2 and FIG. 3, a plurality of fixed water injection pipes 40A, each having a plurality of jet nozzles 40a attached at equal intervals on the lower surface, are arranged crossing in the material flow direction. It is installed and fixed pillar 201 behind it
A movable water injection pipe 40B, which is horizontally stretched 0 around a rotating cylinder 202 and has a plurality of movable jet nozzles 40b attached at equal intervals, is disposed on the lower surface of the rotating cylinder 202, as shown in FIG. By the turning, the trajectory of the jet water flow of the movable jet nozzle 40b draws an arc. The details of the jet nozzle device 200 configured in this way are shown in FIG. 4, in which the fixed support column 201 erected on the foundation 201a is rotatable about the vertical axis via the bearing 202a. The cylinder 202 is rotated by the reversible motor 203,
The movable tube 40B, which is rotationally driven by chain transmission by the chain wheels 203a and 203b and is horizontally stretched and fixed to the rotary cylinder 202, is connected to the swivel (rotary joint) 206 and the water supply hose 205a inside the rotary cylinder 202.
When there are a plurality of fixed water injection pipes 40A, it is effective to crush the clay lumps by narrowing the pitch (interval) of the jet nozzles 40a from the upstream side to the downstream side as shown in FIG. is there.

FIG. 5 shows a jet nozzle device 2
00, another movable arm 204 is horizontally fixed to a rotary cylinder 202 that rotates around a fixed support 201 via an arm bottom plate 204a, and a plurality of movable arms 204 (three in the illustrated example) are provided. The water injection pipe 205 is vertically rotatably arranged via a bearing (pillow block) 205b, the upper end of the water injection pipe 205 is connected to a water injection hose 205a via a swivel 206, and the swivel pin 20 is connected by a rotation stop pin.
6 is integrated with the protective cover 204b, another water injection pipe 205c having a plurality of movable jet nozzles 40b on the lower surface is horizontally fixed to the lower end, and is fixed in an inverted T shape.
Attached to the chain wheel 209 and roller chain 20
The water injection pipe 205c is rotated around the vertical axis by the chain wheel 209 on the output side (upper side) of the speed increaser 207 which is activated by the rotation of the rotary cylinder 202 through the chain transmission of 9a. Therefore, in the structure shown in FIG. 5, the water injection pipe 205c is rotated about the vertical axis at the same time as the movable arm 204 is rotated, and the water discharge area of the movable jet nozzle 40b discharged to the secondary vibrating screen 30 is the secondary vibrating screen. It has a planar area over almost the entire width direction of 30, and is more excellent in crushing clay lumps and the like. As shown in FIG. 3, in order to reciprocate within the range of the revolving angle θ necessary for water injection, the striker operates the limit switch provided at the revolving end to switch the rotation direction of the reversible motor 203. In addition, gearbox 2
07 is the arm bottom plate 20 with the lower input shaft through the flange.
4a is bolted, and rotation of the main body is suppressed by engagement between the torque arm 28 and the stopper 208a standing upright from the base 201a of the fixed column 201 so that the main body does not rotate when the rotary cylinder 202 rotates. Inside the mud tank 50, a stirrer 50a is disposed which stirs the processed material and transfers it to the intake of the vertical screw conveyor 70.
Each of the primary vibrating screen 20 and the secondary vibrating screen 30 has a vibrator 20.
b and 30b are attached, and a hydraulic cylinder 20c for adjusting the inclination angle of the primary vibrating screen 20 is provided. 60
Is a conveyor that conveys foreign substances such as rocks, rubber tires, and wood chips that cannot pass through the primary vibrating screen 20 and the secondary vibrating screen 30. The pressure feeding device is composed of a discharge pipe 80 connected to the discharge port of the vertical screw conveyor 70, a pressure pump 90 installed in the middle of the discharge pipe, and an ejector 100 for injecting compressed air.

The operation of the sludge pumping apparatus 1 of the present invention constructed as above will be described. When the backhoe 18 puts the processed product in the hopper 20a and energizes the primary vibrating screen 20 and the secondary vibrating screen 30, the rocks and foreign matters larger than the mesh of the primary vibrating screen 20 and the secondary vibrating screen 30 among the processed products are removed. Each overflows and is conveyed by the conveyor 60. 1
The lumps of soil such as clay blocks that have passed through the secondary vibrating screen 20 are crushed by the impact of falling onto the transported product falling range 30a of the secondary vibrating screen 30, and those smaller than the mesh of the secondary vibrating screen 30 remain as they are. Although a hard clay lump, which passes through, is decomposed by spraying high-pressure water with a fixed jet nozzle 40a, the clay lump that has not been crushed still overflows if left as it is, which is unsatisfactory. Therefore, as shown in FIGS. 2 and 3, the secondary vibrating screen 30 is rolled in an inclined direction, and high-pressure water is jetted while swirling in the lateral width direction of the secondary vibrating screen 30 by the movable jet nozzle 40b. Forcibly disintegrate and pass through the mesh. In this way, the treated materials (sludge, sediment,
(Clay etc.) is stirred and mixed by the stirrer 50a with the injected water, transferred to the intake of the vertical screw conveyor 70 at one end of the mud tank 50, and is raised by the rotation of the screw 70a and is discharged from the upper discharge port. It is discharged and supplied to the discharge pipe 80. The processed material in the discharge pipe 80 is pressurized by the pressurizing pump 90, and is then plug-transported by the compressed air injected from the ejector 100 to be pneumatically transported to a remote destination.

As described above, in the sludge pumping device 1 of the present invention, the processed product of the conventional device shown in FIGS. 6 and 7 passes through the vibrating screen and moves downward due to the head pressure due to the deposition height of the processed product itself. In contrast to the vertical screw conveyor 70
Since it is strongly transferred by the mechanical transport action by the, it is possible to strongly take in even a small lump, so that the mesh of the secondary vibrating sieve 30 can be enlarged by that amount, and once it is taken into the screw, the rotation of the high-speed screw rotates. In addition to the transfer action, the action facilitates the agitation fluidization and thus facilitates the subsequent transfer. In addition, since the vibrating screen has two stages, it is not only easy to remove rocks and foreign materials, but also the mesh of the primary vibrating screen can be made much larger than that of the secondary vibrating screen, so that the sand itself can pass through. It's very smooth. The conventional ones shown in FIGS. 6 and 7 have only one stage of vibrating screen, so that the mesh size is inevitably reduced. Further, in the present invention, the clay mass that needs to be treated is passed through the mesh by crushing when falling onto the secondary vibrating sieve and by forced crushing by a high-pressure jet water flow with a fixed jet nozzle or a movable jet nozzle. Therefore, it is possible to avoid mixing with rocks and foreign substances.

[0011]

As described above, according to the present invention, sludge and earth and sand can be efficiently transferred as compared with the prior art, rocks and foreign substances can be easily selected, and a large amount of earth and sand can be transferred. It is excellent because it has the function of crushing, and is suitable for large-volume processing.

[Brief description of drawings]

FIG. 1 is an overall side view of a sludge pumping device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a jet nozzle device according to an embodiment of the present invention.

FIG. 3 is a plan view of a jet nozzle device and a secondary vibrating screen according to an embodiment of the present invention.

FIG. 4 is a vertical sectional view of a jet nozzle device according to an embodiment of the present invention.

FIG. 5 is a vertical sectional view of a jet nozzle device according to another embodiment of the present invention.

FIG. 6 is a schematic side view of a conventional sludge pumping device.

FIG. 7 is a schematic side view of another conventional sludge pumping device.

[Explanation of symbols]

 1 Sludge Pressurizing Device 2 Vibrating Sieve 2a Vibrator 3 Hopper 4 Screw Feeder 5 Inlet Valve 6 Pressure Feeding Tank 7 Outlet Valve 8 Discharge Pipe 8a Ejector 9 Waste Transport Conveyor 10 Pressurizing Pump 18 Backhoe 20 Primary Vibrating Sieve 20a Hopper 20b Addition Shaking machine 20c Hydraulic cylinder 30 Secondary vibrating sieve 30a Transported object falling range 30b Shaking machine 40a Jet nozzle 40b Movable jet nozzle 40A Fixed water injection pipe 40B Movable water injection pipe 50 Mud tank 50a Stirrer 60 Conveyor 70 Vertical screw conveyor 70a Screw 80 Discharge pipe 90 Pressurizing pump 100 Ejector 200 Jet nozzle device 201 Fixed column 201a Foundation 202 Rotating cylinder 202a Bearing 203 Reversible motor 203a Chain wheel 203b Chain wheel 204 Movable arm 204a Over arm bottom plate 205 water injection pipe 205a injection hose 205b bearing (pillow block) 205c increase water injection tube 206 swivel 207 gearbox 208 torque arm 208a stopper 209 Rorachien 209a Rorachien

Claims (1)

[Claims] 1. A primary vibrating screen provided with a hopper for receiving sludge, and a secondary vibrating screen disposed directly below the primary vibrating screen,
A jet nozzle device which is arranged directly above the secondary vibrating screen and which sprays high-pressure jet water onto the clay mass on the secondary vibrating screen, and a mud which is provided immediately below the secondary vibrating screen and is provided with a stirring device inside. A tank, a vertical screw conveyor whose lower end is buried in the mud tank and rises vertically or inclined, a discharge pipe connected to a discharge port of the vertical screw conveyor, and a discharge pipe provided in the middle of the discharge pipe A sledro pumping device comprising a pressurizing pump and an ejector for pumping compressed air, wherein the jet nozzle device comprises at least a plurality of fixed jet nozzles arranged in a direction intersecting the material advancing direction of the secondary vibrating screen. One or more rows are provided, or a plurality of jet nozzles are provided in a substantially horizontal movable tube or arm that reciprocates in a range of an arbitrary angle with a column standing on the side of the secondary vibrating screen as a rotation axis. Sludge Feeding apparatus.