Coal washing device

By designing a coal washing device including two washing chambers and corresponding driving components, the existing equipment has been solved, and more efficient coal screening and cleaning effects have been achieved.

CN222428524UActive Publication Date: 2025-02-07SHAANXI COAL IND CHEM GRP SUN JIACHA LONGHUA MINING
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Patent Information

Application Number
CN202420711118.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-08
Publication Date
2025-02-07
Estimated Expiration
2034-04-08

AI Technical Summary

Technical Problem

The existing coal washing and selection devices have low screening efficiency, and coal and gangue are in block-like accumulation, resulting in poor cleaning results.

Method used

A coal washing and selection device is designed, including two connected washing and selection chambers, each equipped with an inclined screen plate and a driving assembly. Through the coordinated cooperation of the reciprocating screen plate and the moving rod, the shaking of the coal block and the Stir and clean through the nozzle.

Benefits of technology

It improves the screening efficiency and cleaning effect of coal, ensuring that the coal blocks are fully shaken and stirred during the washing and selection process, thereby improving the quality of the product.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a coal washing device, and relates to the technical field of coal production, the coal washing device comprises a shell, the interior of the shell is sequentially divided into a first washing chamber and a second washing chamber from top to bottom, and the first washing chamber and the second washing chamber communicate with each other; a first sieve plate which is obliquely arranged and a first driving assembly used for driving the first sieve plate to reciprocate are arranged in the first washing and selecting chamber, and a first moving rod is arranged above the first sieve plate; a second sieve plate which is obliquely arranged and a third driving assembly used for driving the second sieve plate to reciprocate are arranged in the second washing and selecting chamber, and a second moving rod is arranged above the second sieve plate; and under cooperation of the first sieve plate and the second sieve plate which move in a reciprocating mode and the first moving rod and the second moving rod which move in a reciprocating mode, coal briquettes can be shaken, turned and stirred, cleaning is more in place, the screening efficiency is improved, and the cleaning effect is improved.
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Description

Technical Field

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

[0002] Coal washing generally refers to the process of removing gangue or other impurities from coal. Coal washing is generally carried out by utilizing the different physical properties of coal and gangue, and separating the coal and gangue impurities in media of different densities or characteristics. Before separating the coal from the gangue, the coal blocks need to be screened and classified, and the coal is divided into different grades according to the diameter size. After the classification is completed, the soil on the coal and gangue needs to be cleaned. The existing coal washing equipment has low screening efficiency, and the coal and gangue are in a block-like state, resulting in poor cleaning effect. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a coal washing device, which can solve the technical problems that the existing coal washing devices have low screening efficiency and coal and gangue are in a block-like state, resulting in poor cleaning effect.

[0004] The embodiment of the present application provides a coal washing device, comprising a shell, wherein the interior of the shell is sequentially divided into a first washing chamber and a second washing chamber connected to each other from top to bottom, a feed pipe is connected to the top of the shell, a first discharge pipe connected to the first washing chamber is connected to the side of the shell, a second discharge pipe connected to the second washing chamber is connected to the side of the shell, and a third discharge pipe is connected to the bottom end of the side of the shell;

[0005] The first washing chamber is provided with an inclined first screen plate and a first driving assembly for driving the first screen plate to move back and forth, the first screen plate extends into the first discharge pipe, and a first moving rod, a second driving assembly for driving the first moving rod to move back and forth, and a first cleaning assembly for cleaning coal blocks on the first screen plate are provided above the first screen plate;

[0006] The second washing chamber is provided with an inclined second screen plate and a third driving assembly for driving the second screen plate to move back and forth, the second screen plate extends into the second discharge pipe, and a second moving rod, a fourth driving assembly for driving the second moving rod to move back and forth, and a second cleaning assembly for cleaning the coal blocks on the second screen plate are provided above the second screen plate.

[0007] Wherein, the first driving assembly is a first cylinder, the first cylinder drives the first screen plate to move back and forth, a first guide slider is fixedly arranged on the first screen plate, a first guide slot is provided on the housing, and the first guide slider is limitedly slidably connected with the first guide slot;

[0008] The third driving assembly is a third cylinder, and the third cylinder drives the second screen plate to move back and forth. A second guide slider is fixedly provided on the second screen plate, and the second guide slider is limitedly slidably connected with the first guide slot.

[0009] Wherein, the second driving assembly comprises a first driving motor, a first screw and a first screw sleeve, the first screw is rotatably arranged in the first washing chamber through a bearing, the first driving motor drives the first screw to rotate, the first screw sleeve is threadedly sleeved on the first screw, one end of the first moving rod is fixedly connected to the first screw sleeve, a second guide slot is provided on the housing, and the other end of the first moving rod is limitedly slidably connected to the second guide slot;

[0010] The fourth driving assembly includes a second driving motor, a second screw and a second screw sleeve. The second screw is rotatably arranged in the second washing chamber through a bearing. The second driving motor drives the second screw to rotate. The second screw sleeve is threadedly sleeved on the second screw. One end of the second moving rod is fixedly connected to the second screw sleeve, and the other end of the second moving rod is limitedly slidably connected to the second guide groove.

[0011] Wherein, the first cleaning component includes a first nozzle, and the second cleaning component includes a second nozzle.

[0012] Among them, the shell is provided with a second cylinder, a first baffle, a fourth cylinder and a second baffle, the second cylinder drives the first baffle to move, and the first baffle moves through the first discharge pipe, the fourth cylinder drives the second baffle to move, and the second baffle moves through the second discharge pipe.

[0013] Wherein, a guide plate located above the first screen plate is fixedly arranged in the first washing chamber.

[0014] Wherein, the inner bottom end of the shell is inclined.

[0015] Wherein, support legs are fixedly arranged on the shell.

[0016] Beneficial effects of the utility model:

[0017] The utility model provides a coal washing and sorting device. When in use, coal blocks are added into a shell from a feed pipe, and the coal blocks fall onto a first screen plate. The first driving component is turned on to drive the first screen plate to move back and forth, and the coal blocks on the first screen plate are driven to shake. At the same time, the second driving component is turned on to drive the first moving rod to move back and forth, and the coal blocks on the first screen plate are stirred. At the same time, the coal blocks on the first screen plate are cleaned by the first cleaning component. Under the action of gravity, the larger coal blocks roll down along the first screen plate and are discharged from the shell from the first discharge pipe. The smaller coal blocks pass through the first screen plate and fall onto the second screen plate. The third driving component is turned on to drive the second screen plate to move back and forth. The fourth driving assembly is turned on to drive the second moving rod to move back and forth, stirring the coal blocks on the second screen plate, and at the same time, the coal blocks on the second screen plate are cleaned by the second cleaning assembly. Under the action of gravity, the larger coal blocks roll down along the second screen plate and are discharged from the shell from the second discharge pipe, and the smaller coal powder passes through the second screen plate and is discharged from the shell together with the waste water from the third discharge pipe; under the coordinated cooperation of the reciprocating first and second screen plates and the reciprocating first and second moving rods, the coal blocks will shake and stir, and the cleaning will be more thorough, thereby improving the screening efficiency and enhancing the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments 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.

[0019] Figure 1 This is a schematic diagram of the overall structure of some embodiments of the present application;

[0020] Figure 2 This is a schematic diagram of the structure of the first screen plate and the first drive assembly in some embodiments of the present application;

[0021] Figure 3 This is a schematic diagram of the structure of the first moving rod and the second driving assembly in some embodiments of the present application.

[0022] The reference numerals are:

[0023] 1. Shell; 11. Feed pipe; 12. First discharge pipe; 13. Second discharge pipe; 14. Third discharge pipe; 15. First guide chute; 16. Second guide chute; 17. Second cylinder; 18. First baffle; 19. Fourth cylinder; 110. Second baffle; 111. Support leg;

[0024] 2. First washing chamber; 21. First screen plate; 22. First moving rod; 23. First guide slider; 24. Guide plate;

[0025] 3. Second washing chamber; 31. Second screen plate; 32. Second moving rod; 33. Second guide slide block;

[0026] 4. First drive assembly; 41. First cylinder;

[0027] 5. Second drive assembly; 51. First drive motor; 52. First screw rod; 53. First screw sleeve;

[0028] 6. a first cleaning assembly; 61. a first nozzle;

[0029] 7. Third drive assembly; 71. Third cylinder;

[0030] 8. Fourth drive assembly; 81. Second drive motor; 82. Second screw rod; 83. Second screw sleeve;

[0031] 9. A second cleaning component; 91. A second nozzle. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0037] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] like Figures 1 to 3 As shown, the embodiment of the present application provides a coal washing device, including a shell 1, the interior of the shell 1 is divided into a first washing chamber 2 and a second washing chamber 3 which are connected from top to bottom, a feed pipe 11 is connected to the top of the shell 1, a first discharge pipe 12 which is connected to the first washing chamber 2 is connected to the side of the shell 1, a second discharge pipe 13 which is connected to the second washing chamber 3 is connected to the side of the shell 1, and a third discharge pipe 14 is connected to the bottom end of the side of the shell 1;

[0039] The first washing chamber 2 is provided with an inclined first screen plate 21 and a first driving assembly 4 for driving the first screen plate 21 to move back and forth. The first screen plate 21 extends into the first discharge pipe 12. A first moving rod 22, a second driving assembly 5 for driving the first moving rod 22 to move back and forth, and a first cleaning assembly 6 for cleaning the coal blocks on the first screen plate 21 are provided above the first screen plate 21.

[0040] The second washing chamber 3 is provided with an inclined second sieve plate 31 and a third driving assembly 7 for driving the second sieve plate 31 to move back and forth. The second sieve plate 31 extends into the second discharge pipe 13. A second moving rod 32, a fourth driving assembly 8 for driving the second moving rod 32 to move back and forth, and a second cleaning assembly 9 for cleaning the coal blocks on the second sieve plate 31 are provided above the second sieve plate 31.

[0041] When in use, coal blocks are added into the shell 1 from the feed pipe 11, and the coal blocks fall onto the first sieve plate 21. The first driving component 4 is turned on to drive the first sieve plate 21 to move back and forth, causing the coal blocks on the first sieve plate 21 to shake. At the same time, the second driving component 5 is turned on to drive the first moving rod 22 to move back and forth, stirring the coal blocks on the first sieve plate 21. At the same time, the coal blocks on the first sieve plate 21 are cleaned by the first cleaning component 6. Under the action of gravity, the larger coal blocks roll down along the first sieve plate 21 and are discharged from the shell 1 from the first discharge pipe 12. The smaller coal blocks pass through the first sieve plate 21 and fall onto the second sieve plate 31. The third driving component 7 is turned on to drive the second sieve plate 31 to move back and forth, driving the second sieve plate 31 to move back and forth. The coal blocks on the plate 31 shake, and at the same time, the fourth driving assembly 8 is turned on to drive the second moving rod 32 to move back and forth, stirring the coal blocks on the second screen plate 31, and at the same time, the coal blocks on the second screen plate 31 are cleaned by the second cleaning assembly 9. Under the action of gravity, the larger coal blocks roll down along the second screen plate 31 and are discharged from the shell 1 from the second discharge pipe 13, and the smaller coal powder passes through the second screen plate 31 and is discharged from the shell 1 together with the waste water from the third discharge pipe 14; under the coordinated cooperation of the reciprocating first screen plate 21 and the second screen plate 31 and the reciprocating first moving rod 22 and the second moving rod 32, the coal blocks will shake and stir, and the cleaning will be more thorough, thereby improving the screening efficiency and enhancing the cleaning effect.

[0042] like Figure 1 and 2 As shown, in this embodiment, the first driving assembly 4 is a first cylinder 41, which drives the first screen plate 21 to move back and forth, and a first guide slider 23 is fixedly provided on the first screen plate 21, and a first guide slot 15 is provided on the housing 1, and the first guide slider 23 is limitedly slidably connected with the first guide slot 15;

[0043] The third driving assembly 7 is a third cylinder 71 , which drives the second sieve plate 31 to move back and forth. A second guide slider 33 is fixedly provided on the second sieve plate 31 , and the second guide slider 33 is limitedly slidably connected with the first guide slot 15 .

[0044] When in use, the first cylinder 41 is turned on to drive the first sieve plate 21 to reciprocate, and the first guide slider 23 and the first guide slot 15 are used in combination to guide and limit the first sieve plate 21; the third cylinder 71 is turned on to drive the second sieve plate 31 to reciprocate, and the second guide slider 33 and the first guide slot 15 are used in combination to guide and limit the second sieve plate 31.

[0045] like Figure 1 and 3 As shown, in this embodiment, the second driving assembly 5 includes a first driving motor 51, a first screw 52 and a first screw sleeve 53. The first screw 52 is rotatably arranged in the first washing chamber 2 through a bearing. The first driving motor 51 drives the first screw 52 to rotate. The first screw sleeve 53 is threadedly sleeved on the first screw 52. One end of the first moving rod 22 is fixedly connected to the first screw sleeve 53. A second guide slot 16 is provided on the housing 1. The other end of the first moving rod 22 is limitedly slidably connected to the second guide slot 16.

[0046] The fourth driving assembly 8 includes a second driving motor 81, a second screw 82 and a second screw sleeve 83. The second screw 82 is rotatably arranged in the second washing chamber 3 through a bearing. The second driving motor 81 drives the second screw 82 to rotate. The second screw sleeve 83 is threadedly sleeved on the second screw 82. One end of the second moving rod 32 is fixedly connected to the second screw sleeve 83, and the other end of the second moving rod 32 is limitedly slidably connected to the second guide groove 16.

[0047] When in use, turn on the first drive motor 51 to drive the first screw 52 to rotate, the first screw 52 drives the first screw sleeve 53 to rotate, the first screw sleeve 53 drives the first moving rod 22 to reciprocate, and the first moving rod 22 and the second guide groove 16 are used in combination to guide and limit the first moving rod 22; turn on the second drive motor 81 to drive the second screw 82 to rotate, the second screw 82 drives the second screw sleeve 83 to rotate, the second screw sleeve 83 drives the second moving rod 32 to reciprocate, and the second moving rod 32 and the second guide groove 16 are used in combination to guide and limit the second moving rod 32.

[0048] like Figure 1 As shown, in this embodiment, the first cleaning component 6 includes a first nozzle 61, and the second cleaning component 9 includes a second nozzle 91; when in use, the first nozzle 61 and the second nozzle 91 are connected to an external water source, so that the first nozzle 61 can spray water to clean the coal blocks on the first screen plate 21, and the second nozzle 91 can spray water to clean the coal blocks on the second screen plate 31.

[0049] like Figure 1As shown, in this embodiment, a second cylinder 17, a first baffle 18, a fourth cylinder 19 and a second baffle 110 are provided on the shell 1. The second cylinder 17 drives the first baffle 18 to move, and the first baffle 18 moves through the first discharge pipe 12. The fourth cylinder 19 drives the second baffle 110 to move, and the second baffle 110 moves through the second discharge pipe 13.

[0050] When in use, the second cylinder 17 is turned on to drive the first baffle 18 to descend and close the first discharge pipe 12. After the coal blocks on the first screen plate 21 are cleaned, the second cylinder 17 is turned on to drive the first baffle 18 to rise and open the first discharge pipe 12, so that the coal blocks are discharged from the first discharge pipe 12 to the shell 1; the fourth cylinder 19 is turned on to drive the second baffle 110 to descend and close the second discharge pipe 13. After the coal blocks on the second screen plate 31 are cleaned, the fourth cylinder 19 is turned on to drive the second baffle 110 to rise and open the second discharge pipe 13, so that the coal blocks are discharged from the shell 1 from the second discharge pipe 13.

[0051] like Figure 1 As shown, in this embodiment, a guide plate 24 located above the first screen plate 21 is fixedly provided in the first washing chamber 2; the guide plate 24 allows the coal blocks entering the shell 1 from the feed pipe 11 to accurately fall onto the first screen plate 21, thereby improving the stability of use.

[0052] like Figure 1 As shown, in this embodiment, the inner bottom end of the shell 1 is inclined, which is conducive to the waste water flowing to the third discharge pipe 14 for discharge.

[0053] like Figure 1 As shown, in this embodiment, a supporting leg 111 is fixedly provided on the housing 1; the supporting leg 111 supports and protects the housing 1, thereby improving the stability in use.

[0054] Working principle: When the coal washing device provided by the present application is in use, the second cylinder 17 is turned on to drive the first baffle 18 to descend and close the first discharge pipe 12, the fourth cylinder 19 is turned on to drive the second baffle 110 to descend and close the second discharge pipe 13, and the coal blocks are added into the shell 1 from the feed pipe 11, and the coal blocks fall onto the first screen plate 21, and the first cylinder 41 is turned on to drive the first screen plate 21 to move back and forth, driving the coal blocks on the first screen plate 21 to shake, and at the same time, the first driving motor 51 is turned on to drive the first screw 52 to rotate, and the first screw 52 drives the first screw sleeve 53 to rotate, and the first screw sleeve 53 drives the first moving rod 22 to move back and forth, stirring the coal blocks on the first screen plate 21, and at the same time, water is sprayed through the first nozzle 61 to clean the coal blocks on the first screen plate 21, and after the coal blocks on the first screen plate 21 are cleaned, the second cylinder 17 is turned on to drive the first baffle 18 to rise and open the first discharge pipe 12, so that the larger coal blocks are under the action of gravity. The coal blocks on the second sieve plate 31 are discharged from the first discharge pipe 12, and the smaller coal blocks pass through the first sieve plate 21 and fall onto the second sieve plate 31. The third cylinder 71 is turned on to drive the second sieve plate 31 to move back and forth, driving the coal blocks on the second sieve plate 31 to shake. At the same time, the second drive motor 81 is turned on to drive the second screw 82 to rotate, and the second screw 82 drives the second screw sleeve 83 to rotate. The second screw sleeve 83 drives the second moving rod 32 to move back and forth, stirring the coal blocks on the second sieve plate 31. At the same time, water is sprayed through the second nozzle 91 to clean the coal blocks on the second sieve plate 31. After the cleaning of the coal blocks on the second sieve plate 31 is completed, the fourth cylinder 19 is turned on to drive the second baffle 110 to rise and open the second discharge pipe 13, so that the larger coal blocks roll down along the second sieve plate 31 under the action of gravity and are discharged from the second discharge pipe 13 to the shell 1. The smaller coal powder passes through the second sieve plate 31 and is discharged from the shell 1 together with the waste water from the third discharge pipe 14.

[0055] The above are only preferred embodiments of the present application and are not intended to limit 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.

Claims

1. A coal washing device, characterized in that: The invention comprises a shell (1), wherein the interior of the shell (1) is divided into a first washing chamber (2) and a second washing chamber (3) which are connected to each other from top to bottom, a feeding pipe (11) is provided at the top of the shell (1), a first discharging pipe (12) which is connected to the first washing chamber (2) is provided at the side of the shell (1), a second discharging pipe (13) which is connected to the second washing chamber (3) is provided at the side of the shell (1), and a third discharging pipe (14) is provided at the bottom end of the side of the shell (1); The first washing chamber (2) is provided with an inclined first screen plate (21) and a first driving assembly (4) for driving the first screen plate (21) to move back and forth, the first screen plate (21) extends into the first discharge pipe (12), and a first moving rod (22), a second driving assembly (5) for driving the first moving rod (22) to move back and forth, and a first cleaning assembly (6) for cleaning coal blocks on the first screen plate (21) are provided above the first screen plate (21); The second washing chamber (3) is provided with an inclined second screen plate (31) and a third driving assembly (7) for driving the second screen plate (31) to move back and forth. The second screen plate (31) extends into the second discharge pipe (13). A second moving rod (32), a fourth driving assembly (8) for driving the second moving rod (32) to move back and forth, and a second cleaning assembly (9) for cleaning coal blocks on the second screen plate (31) are provided above the second screen plate (31).

2. The coal washing device according to claim 1, characterized in that: The first driving assembly (4) is a first cylinder (41), the first cylinder (41) drives the first screen plate (21) to move back and forth, a first guide slider (23) is fixedly provided on the first screen plate (21), a first guide slot (15) is provided on the housing (1), and the first guide slider (23) is connected to the first guide slot (15) in a limited sliding manner; The third driving assembly (7) is a third cylinder (71), and the third cylinder (71) drives the second sieve plate (31) to move back and forth. A second guide slider (33) is fixedly provided on the second sieve plate (31), and the second guide slider (33) is limitedly slidably connected to the first guide slot (15).

3. The coal washing device according to claim 1, characterized in that: The second driving assembly (5) comprises a first driving motor (51), a first screw rod (52) and a first screw sleeve (53); the first screw rod (52) is rotatably arranged in the first washing chamber (2) via a bearing; the first driving motor (51) drives the first screw rod (52) to rotate; the first screw sleeve (53) is threadedly sleeved on the first screw rod (52); one end of the first moving rod (22) is fixedly connected to the first screw sleeve (53); a second guide slot (16) is provided on the housing (1); the other end of the first moving rod (22) is limitedly slidably connected to the second guide slot (16); The fourth driving assembly (8) comprises a second driving motor (81), a second screw rod (82) and a second screw sleeve (83); the second screw rod (82) is rotatably arranged in the second washing chamber (3) via a bearing; the second driving motor (81) drives the second screw rod (82) to rotate; the second screw sleeve (83) is threadedly sleeved on the second screw rod (82); one end of the second moving rod (32) is fixedly connected to the second screw sleeve (83); the other end of the second moving rod (32) is limitedly slidably connected to the second guide groove (16).

4. The coal washing device according to claim 1, characterized in that: The first cleaning assembly (6) comprises a first nozzle (61), and the second cleaning assembly (9) comprises a second nozzle (91).

5. The coal washing device according to claim 1, characterized in that: The shell (1) is provided with a second cylinder (17), a first baffle (18), a fourth cylinder (19) and a second baffle (110); the second cylinder (17) drives the first baffle (18) to move, and the first baffle (18) moves through the first discharge pipe (12); the fourth cylinder (19) drives the second baffle (110) to move, and the second baffle (110) moves through the second discharge pipe (13).

6. The coal washing device according to claim 1, characterized in that: A guide plate (24) located above the first screen plate (21) is fixedly arranged in the first washing chamber (2).

7. The coal washing device according to claim 1, characterized in that: The inner bottom end of the shell (1) is arranged to be inclined.

8. The coal washing device according to claim 1, characterized in that: Support legs (111) are fixedly arranged on the housing (1).