CN222076830U - A coal drop pipe convenient for maintenance - Google Patents

Abstract

The embodiment of the utility model relates to the technical field of coal pipes, in particular to a coal pipe convenient to overhaul, which comprises a first pipe body inserted into a coal mill, wherein a corrugated pipe is connected to a top flange of the first pipe body, a second pipe body is connected to a top flange of the corrugated pipe, a main pipe is connected to a top flange of the second pipe body, an overhaul port is formed in one side of the second pipe body, a discharge pipe is connected to a flange at the overhaul port, and plugboard structures are arranged on the discharge pipe and the second pipe body. The utility model has the beneficial effects that when in actual use, if the inside of the coal dropping pipe is blocked, the coal dropping pipe can be dredged through the overhaul port, and if the blockage is serious and can not be dredged through the overhaul port, the pipe body II can be detached through the flange, so that the pipe body II, the main pipe, the pipe body I and the corrugated pipe can be dredged, namely, when the blockage occurs, the pipe can be dredged through the overhaul port at first, and the disassembly or cutting of the pipeline is not needed.

Description

Coal dropping pipe convenient to overhaul

Technical Field

The utility model relates to the technical field of coal pipes, in particular to a coal pipe convenient to overhaul.

Background

When the roller disc type coal mill is used for coal milling, raw coal is stored in a raw coal bin in the normal production process, is conveyed into a coal dropping pipe by a belt after passing through a vibration hopper, is automatically dropped into the coal mill by gravity, moves towards the edge of the mill under the action of centrifugal force along with rotation of the mill, is crushed by rolling of a grinding roller when passing through an annular groove on the mill, is brought up by high-speed airflow of an air ring at the edge of the mill, large particles directly fall onto the mill to grind again, and when the materials in the airflow pass through an upper separator, coarse powder falls onto the mill from a cone hopper to grind again under the action of a rotating rotor, qualified fine powder is ground together with the airflow, is collected by a dust collecting device, namely the product, the materials containing moisture are dried in the contact process with hot air flow, and the requirements of different humidity materials can be met by adjusting the temperature of the hot air. The separator is adjusted to achieve the thickness required by different products, and pulverized coal is produced for a gasification system;

However, in normal production, as the water and the coal ash are combined, the bonding phenomenon is easy to occur on the inner wall of the coal dropping pipe, so that the coal dropping pipe is frequently blocked, the coal mill is stopped, the normal operation of the system is influenced, the coal blocking condition is generated, the dredging is needed in time, but the current coal dropping pipe is of an integrated structure, so that the holes on the coal dropping pipe are needed to be cleaned, the recovery is needed after the cleaning is finished, the time is longer, and the efficiency is low; the coal dust is fed into the oil tank due to the abrasion of the inside of the rotary separator of the coal mill, so that the condition of over-current is frequently caused by the coal dust entering the oil tank, the rotary separator is required to be disassembled and inspected, but the coal dropping pipe above the rotary separator cannot be disassembled, the separator is difficult to disassemble and inspect, the coal dropping pipe is required to be cut off to overhaul the separator, the coal dropping pipe is restored after overhaul is finished, the required time is long, in addition, after the coal is stopped in an emergency way under special conditions, the raw coal bin cannot be used up in time, the raw coal is stored in the raw coal bin, the raw coal storage amount is generally above 300t, the smoldering phenomenon can be caused due to long-time storage, and the serious potential safety hazard exists, the youyu coal dropping pipe is not capable of discharging the coal in the raw coal bin in an integrated machine structure, so that personnel can be arranged to manually discharge the raw coal of the raw coal bin for centralized treatment after the coal is stopped, but in the discharging process, the conical part of the raw coal bin is limited in space, the coal discharging operation is unfavorable, the coal is long in the discharging time, and the average time is 4t/h, and the time is consumed.

Therefore, there is a need for a coal drop tube that is easy to service to overcome the above problems.

Disclosure of utility model

In order to solve the problems, the embodiment of the utility model provides a coal dropping pipe convenient to overhaul, and the aim of solving the problems in the background technology is fulfilled.

The coal dropping pipe comprises a first pipe body inserted into the coal mill, a corrugated pipe is connected to a top flange of the first pipe body, a second pipe body is connected to a top flange of the corrugated pipe, a main pipe is connected to a top flange of the second pipe body, an overhaul port is formed in one side of the second pipe body, a discharge pipe is connected to a flange at the overhaul port, and insertion plate structures are arranged on the discharge pipe and the second pipe body.

As a further improvement of the above technical scheme:

an extension tube is sleeved outside the discharge tube.

Two electric hoists are arranged on the extension tube, and connecting ropes of the two electric hoists are respectively fixed at two ends of the extension tube.

The length of the first pipe body is 2600mm, the length of the second pipe body is 2800mm, and the length of the corrugated pipe is 300mm.

The flashboard structure comprises a notch formed in the discharging pipe, a baffle which is arranged on the discharging pipe in a rotating mode and can be inserted into the notch, and a blocking block which is arranged on the discharging pipe in a rotating mode and can block the notch.

The embodiment of the utility model has the beneficial effects that:

When the pipe is blocked, the pipe body II, the main pipe, the pipe body I and the corrugated pipe can be dredged through the overhaul port, namely, when the pipe is blocked, the pipe body I and the corrugated pipe can be dredged through the overhaul port, the pipe is not required to be detached or cut, and the pipe can be detached when the pipe is not dredged through the overhaul port;

When the rotary separator is required to be disassembled and inspected, the second pipe body is disassembled, and the first pipe body can be pulled out from the rotary separator, so that the pipeline is not required to be cut and truncated, and the actual operation is convenient;

When emergency stop occurs, the second pipe body is blocked through the plugboard structure, and the discharging pipe is opened, so that coal in the raw coal bin can be discharged in time through the discharging pipe.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the second pipe body of the present utility model when the second pipe body is closed;

Fig. 3 is a schematic structural diagram of the second opening of the tube body of the present utility model.

In the figure, a first pipe body, a second pipe body, a corrugated pipe, a main pipe, a service hole, a discharging pipe, an extension pipe, an electric hoist, a 9 plug board structure, a 91, a notch, a 92, a baffle, a 93 and a plugging block are arranged.

Detailed Description

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

Referring to fig. 1 to 3, the embodiment of the utility model discloses a coal dropping pipe convenient to overhaul, which comprises a first pipe body 1 inserted into a coal mill, wherein a corrugated pipe 3 is connected to a top flange of the first pipe body 1, a second pipe body 2 is connected to a top flange of the corrugated pipe 3, and a main pipe 4 is connected to a top flange of the second pipe body 2;

An overhaul port 5 is formed in one side of the second pipe body 2, and a discharge pipe 6 is connected at the overhaul port 5 in a flange manner;

the discharging pipe 6 and the pipe body II 2 are provided with a plugboard structure 9;

When the coal pipe is in actual use, if the inside of the coal pipe is blocked, the coal pipe can be dredged through the overhaul port 5, if the blockage is serious and can not be dredged through the overhaul port 5, the pipe body II 2 can be detached through the flange, so that the pipe body II 2, the main pipe 4, the pipe body I1 and the corrugated pipe 3 are dredged;

When the rotary separator is required to be disassembled and inspected, the second pipe body 2 is disassembled, and the first pipe body 1 can be pulled out from the rotary separator, so that the pipeline is not required to be cut and truncated, and the actual operation is convenient;

when emergency stop occurs, the second pipe body 2 is plugged through the plug board structure 9, the discharging pipe 6 is opened, coal in the raw coal bin can be discharged through the discharging pipe 6 in time, and when normal operation is performed, the discharging pipe 6 is plugged through the plug board structure 9, so that coal can normally pass through.

As a further explanation of the application:

The extension tube 7 is sleeved outside the discharging tube 6, two electric hoists 8 are arranged on the extension tube 7, and connecting ropes of the two electric hoists 8 are respectively fixed at two ends of the extension tube 7;

Coal in the discharging pipe 6 is discharged through the extension pipe 7, the extension pipe 7 is kept inclined through the electric hoist 8, and a vehicle is arranged at one end of the extension pipe 7 with lower horizontal height, so that the coal is transported away in time through the vehicle.

As a further explanation of the application:

The length of the first pipe body 1 is 2600mm, the length of the second pipe body 2 is 2800mm, the length of the corrugated pipe 3 is 300mm, after the second pipe body 2 is disassembled, the top of the corrugated pipe 3 is 2800mm away from the bottom of the main pipe 4, and the length of the first pipe body 1 is 2600mm, so that the first pipe body 1 can be ensured to be pulled out of the coal mill normally.

As a further explanation of the application:

The plugboard structure 9 comprises a notch 91 formed in the discharging pipe 6, a baffle 92 rotatably arranged on the discharging pipe 6 and capable of being inserted into the notch 91, and a blocking block 93 rotatably arranged on the discharging pipe 6 and capable of blocking the notch 91;

When in actual use, when the plugging is needed, the baffle 92 can be inserted into the notch 91, when the plugging is needed to be opened, the baffle 92 is taken out, then the plugging block 93 is inserted into the notch 91, the notch 91 is plugged, and coal is prevented from running out of the notch 91.

It should be noted that, in the description of the present utility model, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus/means that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus/means.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims (5)

1. The coal dropping pipe is characterized by comprising a first pipe body (1) inserted into the coal mill, wherein a corrugated pipe (3) is connected to the top flange of the first pipe body (1), a second pipe body (2) is connected to the top flange of the corrugated pipe (3), and a main pipe (4) is connected to the top flange of the second pipe body (2);

An overhaul port (5) is formed in one side of the second pipe body (2), and a discharge pipe (6) is connected to the overhaul port (5) in a flange manner;

And the discharging pipe (6) and the second pipe body (2) are respectively provided with an inserting plate structure (9).

2. The coal dropping pipe convenient to overhaul as claimed in claim 1, wherein the extension pipe (7) is sleeved outside the discharging pipe (6).

3. The coal dropping pipe convenient to overhaul according to claim 2, wherein two electric hoists (8) are arranged on the extension pipe (7), and connecting ropes of the two electric hoists (8) are respectively fixed at two ends of the extension pipe (7).

4. The coal dropping pipe convenient to overhaul as claimed in claim 1, wherein the length of the first pipe body (1) is 2600mm, the length of the second pipe body (2) is 2800mm, and the length of the corrugated pipe (3) is 300mm.

5. The coal dropping pipe convenient to overhaul according to claim 1, wherein the inserting plate structure (9) comprises a notch (91) formed in the discharging pipe (6), a baffle (92) which is rotatably arranged on the discharging pipe (6) and can be inserted into the notch (91), and a blocking block (93) which is rotatably arranged on the discharging pipe (6) and can block the notch (91).