Coal slime sorting device

Abstract

The utility model relates to the technical field of coal slime separation, and provides a coal slime separation device which comprises a first barrel body and a second barrel body which are arranged in the height direction, the first barrel body is located above the second barrel body, and the second barrel body is a conical barrel; the feeding part is located at the top of the first barrel body; and the water spraying device penetrates through the first barrel body and is provided with a plurality of water spraying holes towards the direction of the second barrel body. According to the technical scheme, the problem that the water spraying holes are blocked can be reduced, and therefore the workload of operators is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of coal slime sorting, and in particular to a coal slime sorting device. Background Art

[0002] The basic principle of the coal slime separator is as follows: in the barrel of the coal slime separator, a number of nozzles that spray water upward are arranged. When the barrel is full of water, a slurry containing coarse coal slime particles with a high concentration (about 35-60% concentration) is added from the center of the top. The coarse coal slime particles in the slurry are sprayed with water upward in the barrel by the nozzles to generate buoyancy to interfere with the sedimentation of different coals or gangue or coal gangue symbiosis. The low-specific gravity particles with slow sedimentation rate float up and overflow from the barrel as clean coal, and the high-specific gravity particles with fast sedimentation rate sink and are discharged from the bottom flow outlet as tailings or tailings. This process realizes the sorting of coarse coal slime by specific gravity. For example, application number: CN200720063685.X discloses a coal slime sorting machine, and specifically discloses that the upper part of the coal slime sorting chamber is provided with a dispersion barrel with a tangential feed pipe, and a guide rod passes through the center of the dispersion barrel, the upper end of which is connected to the electric-controlled pneumatic cylinder, and the lower end is connected to the plug valve. An overflow trough, a distribution plate, a nozzle, a density sensor and an inclined plate group are also provided in the sorting chamber, wherein the density sensor is connected to the electric control system, and the nozzle is placed on the distribution plate and connected to the pressure water tank.

[0003] In the above-mentioned prior art, due to the sedimentation of coal slime particles, several nozzles arranged to spray water upwards are easily blocked by materials, resulting in poor water spraying, which often requires manual unblocking, increasing the workload of operators and causing unsafe factors. Utility Model Content

[0004] The technical problem to be solved by the present application is to provide a coal slime sorting device which can reduce the problem of blockage of water spray holes, thereby reducing the workload of operators.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] The present application provides a coal slime sorting device, comprising: a first barrel body and a second barrel body arranged in a height direction, the first barrel body is located above the second barrel body, and the second barrel body is a conical barrel; a material feeding piece, located at the top of the first barrel body; a water spraying device, passing through the first barrel body and providing a plurality of water spraying holes toward the second barrel body.

[0007] As an embodiment, the water spraying device includes a plurality of parallel water pipes, and each of the water pipes is provided with a plurality of water spraying holes facing the second barrel body.

[0008] As an embodiment, a water inlet groove is provided on the outer periphery of the second barrel; the water spraying device further comprises a plurality of connecting pipes, and both ends of the connecting pipes are respectively connected to the water inlet groove and the water pipe.

[0009] As an embodiment, the water pipe is sealed and connected at a position where it passes through the first barrel.

[0010] As an implementation mode, a water inlet valve for communicating with an external water source and a flushing valve for cleaning the water inlet tank and the water pipe are fixed on the water inlet tank.

[0011] As an embodiment, a discharge chute is provided on the top of the first barrel body, and the discharge chute is sleeved on the outer surface of the first barrel body. The outer peripheral wall of the discharge chute is higher than the top height of the first barrel body. The outer peripheral wall of the discharge chute is also provided with a discharge port. The bottom wall of the discharge chute is provided with a slope, and the inclination direction of the slope is inclined toward the discharge port.

[0012] As an implementation mode, a densitometer for detecting material density is further provided in the first barrel.

[0013] As an implementation manner, an inspection platform is also installed on the top of the first barrel, and the inspection platform is provided with the material feeding piece.

[0014] As an implementation mode, the outer surface of the second barrel is also provided with an emergency discharge port.

[0015] As an implementation manner, a pinch valve is also installed at the bottom of the second barrel.

[0016] The technical solution of this application has the following beneficial effects:

[0017] By arranging the first barrel body and the second barrel body in the height direction, the first barrel body is located above the first barrel body, and the second barrel body is conical, the feed piece is located at the top of the first barrel body, the water spray device passes through the first barrel body, and the water spray device is provided with a plurality of water spray holes facing the second barrel body, so that the water spray holes are arranged downward, so that a large number of particles in the material will not vertically enter the water spray holes, reducing the problem of water spray hole blockage;

[0018] In addition, the second barrel body is configured as a conical barrel, so that the particles in the material can gather along the conical barrel to the bottom of the second barrel body, which is convenient for discharge and reduces the problem of material particle accumulation; and the water spraying device passes through the first barrel body, so that the water spraying device is suspended relative to the second barrel body, and the water spraying device sprays water toward the second barrel body, so that the material particles settled in the second barrel body are disturbed again, causing the low specific gravity particles in the material to float up again, thereby improving the clean coal recovery rate and reducing the clean coal rate in the tail coal. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a coal slime separation device provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the structure of a coal slime separation device provided in an embodiment of the present application from a top view;

[0022] Figure 3 A schematic diagram of the partial cross-sectional structure of a coal slime separation device provided in an embodiment of the present application.

[0023] Icons: 1-first barrel; 2-second barrel; 21-accident discharge port; 3-feeding piece; 4-water pipe; 42-water inlet trough; 421-water inlet valve; 422-flushing valve; 43-connecting pipe; 5-discharge trough; 51-discharge port; 6-density meter; 7-maintenance platform; 8-pinch valve. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0025] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] like Figure 1 and 3As shown, the embodiment of the present application provides a coal slime sorting device, comprising a first barrel body 1 and a second barrel body 2 arranged in a height direction, the first barrel body 1 is located above the second barrel body 2, and the second barrel body 2 is a conical barrel; a material feeding piece 3 is located at the top of the first barrel body 1, and is used to transport materials into the first barrel body 1 and the second barrel body 2; a water spraying device passes through the first barrel body 1, and a plurality of water spraying holes are arranged in the direction of the second barrel body 2, so that the water spraying holes are arranged downward, so that a large number of particles in the material will not vertically enter the water spraying holes, reducing the problem of clogging of the water spraying holes; in addition, the second barrel body 2 is set as a conical barrel, so that the particles in the material can be gathered along the conical barrel to the bottom of the second barrel body 2, which is convenient for The water spraying device passes through the first barrel body 1, so that the water spraying device is suspended relative to the second barrel body 2. The water spraying device sprays water toward the second barrel body 2, and the material with a higher specific gravity sinks into the second barrel body 2. In the second barrel body 2, water is sprayed downward from the water spraying hole to interfere with the precipitated material again, so that the fluidity of the material with a higher specific gravity becomes stronger. Because the materials precipitated into the second barrel body 2 are mostly higher specific gravity materials after the first interference sedimentation sorting, it is inevitable that the clean coal with a low specific gravity and large particles will mistakenly enter it. Under the interference of the downward water spraying, the large particles of the clean coal with a lower specific gravity are prompted to float up again, thereby improving the clean coal recovery rate and reducing the clean coal rate of the tail coal.

[0027] Optionally, the first barrel body 1 and the second barrel body 2 are connected by a flange to facilitate transportation and production.

[0028] Optionally, the slope of the second barrel 2 may be 1-70°.

[0029] In the prior art, the barrel of the coal slime separator generally adopts a flat bottom structure, which makes it easy for high-density materials to cause poor fluidity and accumulation after settling to the bottom of the barrel. The nozzles that spray water upward are far apart or some nozzles are blocked, resulting in a smaller interference range of the nozzles, which makes it easy for the bottom materials to accumulate, seriously affecting the interference sedimentation of the materials, and ultimately affecting the normal operation of the material separator; while the second barrel 2 of the embodiment of the present application adopts a conical structure, the purpose is that the material particles can be smoothly concentrated to the discharge port position after sinking to the second barrel 2, and it is not easy to deposit and pile up at the bottom. And when the coal slime separator is running, the water spray hole sprays water downward, so that the materials deposited in the second barrel 2 are in a flowing state, avoiding the materials from being deposited into blocks and unable to flow and discharge.

[0030] like Figures 1 to 3 As shown, as an embodiment, the water spraying device includes a plurality of parallel water pipes 4, each of which is provided with a plurality of water spraying holes facing the second barrel body 2. By providing a plurality of parallel water pipes 4, water can be sprayed toward the second barrel body 2 evenly.

[0031] Optionally, the water spray device further comprises a check valve, which reduces the negative pressure in the water pipe 4 when the water supply is stopped.

[0032] Optionally, the water pipe 4 is connected to an external water source, and the water pipe 4 needs to fill the first barrel body 1 and the second barrel body 2 with water. However, it is inevitable that a small amount of material will penetrate into the water spray hole due to the pressure and concentration difference after the water supply is stopped. When the coal slime sorting device is restarted, a water flow impact is generated in the water pipe 4, and the small amount of material immersed in the water spray hole will be flushed out of the water spray hole again due to the action of the water flow, that is, the water pipe 4 and the water spray hole will not be blocked by the invasion of materials, thereby realizing maintenance-free water spray hole.

[0033] In addition, after the water supply stops, since the water spray hole is set downward, some materials at the location of the water spray hole will settle to the bottom of the second barrel 2 by their own gravity, which will also reduce the problem of clogging the water spray hole.

[0034] Optionally, the water pipe 4 may be made of carbon steel or stainless steel.

[0035] like Figure 1 and 3 As shown, as an embodiment, a water inlet groove 42 is provided on the outer periphery of the second barrel body 2, and the water inlet groove 42 is used to store water so that the water entering the water pipe 4 is in a stable state; the water spraying device also includes a plurality of connecting pipes 43, and the two ends of the connecting pipes 43 are respectively connected to the water inlet groove 42 and the water pipe 4, so that the water in the water inlet groove 42 can enter the water pipe 4.

[0036] Optionally, the connecting pipe 43 may be a hose that can be deformed to facilitate the connection between the water pipe 4 and the water inlet tank 42 .

[0037] Optionally, the water inlet tank 42 includes a ring-shaped body and a plurality of pipes connected to the body, and the pipes are in the same vertical direction, which facilitates the connection of the connecting pipe 43. The two ends of the connecting pipe 43 are respectively connected to the pipe and the water pipe 4, so that the water in the water inlet tank 42 enters the water pipe 4.

[0038] Optionally, the body and the pipeline can be welded.

[0039] As an implementation manner, the water pipe 4 is sealed and connected at a position passing through the first barrel body 1 , thereby ensuring the sealing of the first barrel body 1 .

[0040] A sealing ring may be provided at the position where the water pipe 4 passes through the first barrel body 1 . Of course, welding may also be performed at the position where the water pipe 4 passes through the first barrel body 1 .

[0041] like Figure 1 and 3As shown, as an embodiment, a water inlet valve 421 for connecting with an external water source and a flushing valve 422 for cleaning the water inlet tank 42 and the water pipe 4 are fixed on the water inlet tank 42. By setting the water inlet valve 421, the external water source can be introduced into the water inlet tank 42, and after being buffered by the water inlet tank 42, it flows into multiple water pipes 4 to ensure the stability of the water flow; by setting the flushing valve 422, the impurities in the water inlet tank 42 can be removed by flushing the water inlet tank 42 and the water pipe 4 after the water supply is stopped.

[0042] Optionally, the flushing valve 422 can be connected to an external high-pressure water source, and the water inlet groove 42 is a ring-shaped structure, so that the water pressure entering the water inlet groove 42 becomes larger, turbulence is easily generated, and flushing is convenient.

[0043] like Figures 1 to 3 As shown, as an embodiment, a discharge chute 5 is provided on the top of the first barrel body 1, and the discharge chute 5 is sleeved on the outer surface of the first barrel body 1. The outer peripheral wall of the discharge chute 5 is higher than the top height of the first barrel body 1 to prevent the material from flowing out of the discharge chute 5. The outer peripheral wall of the discharge chute 5 is also provided with a discharge port 51, and the bottom wall of the discharge chute 5 is provided with a slope, and the inclination direction of the slope is inclined toward the discharge port 51, so as to facilitate the discharge of the clean coal suspended above from the discharge port 51.

[0044] like Figure 1 and 2 As shown, as an embodiment, a densitometer 6 for detecting material density is also provided in the first barrel body 1. The densitometer 6 detects the material density in the first barrel body 1 and the second barrel body 2, and feeds back to the controller of the coal slime sorting device, and the controller controls the discharge of material from the discharge port at the bottom of the second barrel body 2.

[0045] Optionally, one end of the densitometer 6 is fixed on the maintenance platform 7 , and the other end extends into the first barrel 1 .

[0046] like Figure 1 As shown, as an embodiment, a maintenance platform 7 is also installed on the top of the first barrel 1, and the maintenance platform 7 is provided with a feed piece 3. By setting up the maintenance platform 7, on the one hand, it plays a role of fixing and supporting the feed piece 3, and on the other hand, it is convenient for maintenance personnel to inspect and repair.

[0047] like Figure 1 and 3 As shown, as an embodiment, an emergency discharge port 21 is also provided on the outer surface of the second barrel body 2. By providing the emergency discharge port 21, when an emergency occurs, the emergency discharge port 21 can be opened to facilitate the discharge of materials in the first barrel body 1 and the second barrel body 2.

[0048] like Figure 1As shown, as an embodiment, a pinch valve 8 is further installed at the bottom of the second barrel 2. The valve core and valve tube in the pinch valve 8 can be rubber or polyurethane. The pinch valve 8 has the characteristics of large diameter, strong adjustability, good wear resistance, fast response speed, etc., especially for abnormally large particles entering the first barrel 1 of the coal slime sorting device, which can also be discharged smoothly, avoiding the occurrence of large particle blockage in the conventional discharge valve.

[0049] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0050] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A coal slime separation device, characterized in that: include: A first barrel body and a second barrel body arranged in a height direction, wherein the first barrel body is located above the second barrel body, and the second barrel body is a conical barrel; A material feeding piece, located at the top of the first barrel; The water spraying device passes through the first barrel body and is provided with a plurality of water spraying holes toward the second barrel body.

2. The coal slime separation device according to claim 1, characterized in that: The water spraying device comprises a plurality of parallel water pipes, and each of the water pipes is provided with a plurality of water spraying holes facing the second barrel body.

3. The coal slime separation device according to claim 2, characterized in that: The outer periphery of the second barrel is provided with a water inlet groove; The water spraying device also includes a plurality of connecting pipes, and two ends of the connecting pipes are respectively connected to the water inlet trough and the water pipe.

4. The coal slime separation device according to claim 2 or 3, characterized in that: The water pipe is sealed and connected at a position passing through the first barrel.

5. The coal slime separation device according to claim 3, characterized in that: A water inlet valve for communicating with an external water source and a flushing valve for cleaning the water inlet tank and the water pipe are fixed on the water inlet tank.

6. The coal slime separation device according to any one of claims 1 to 3, characterized in that: A discharge trough is provided on the top of the first barrel body, and the discharge trough is sleeved on the outer surface of the first barrel body. The outer peripheral wall of the discharge trough is higher than the top height of the first barrel body. A discharge port is also opened on the outer peripheral wall of the discharge trough. The bottom wall of the discharge trough is provided with a slope, and the inclination direction of the slope is inclined toward the discharge port.

7. The coal slime separation device according to any one of claims 1 to 3, characterized in that: The first barrel is also provided with a densitometer for detecting the density of the material.

8. The coal slime separation device according to any one of claims 1 to 3, characterized in that: An inspection platform is also installed on the top of the first barrel, and the material feeding piece is mounted on the inspection platform.

9. The coal slime separation device according to any one of claims 1 to 3, characterized in that: The outer surface of the second barrel is also provided with an emergency discharge port.

10. The coal slime separation device according to any one of claims 1 to 3, characterized in that: A pinch valve is also installed at the bottom of the second barrel.

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