Coal floating ash cleaning device

Abstract

The utility model relates to the technical field of coal cleaning, in particular to a coal floating ash cleaning device which comprises a rack. The belt conveying mechanism is arranged on the rack in the length direction of the rack; the spraying mechanism is arranged on the rack and located above the belt conveying mechanism; the rolling brush mechanism is arranged on the rack and located above the belt conveying mechanism; the water circulation mechanism is connected with the spraying mechanism and is arranged below the belt conveying mechanism; the rotary material stirring barrel is rotationally mounted on the rack and located above the feeding end of the belt conveying mechanism; wherein the belt conveying mechanism can drain water. The heavy coal washing device effectively solves the problem that heavy coal washing equipment in the prior art is not suitable for coal floating ash cleaning.

Description

Technical Field

[0001] This utility model relates to the field of coal cleaning technology, specifically providing a coal ash cleaning device. Background Technology

[0002] The surface ash on coal is essentially fine coal dust, rock powder, or impurity particles that adhere to the coal during mining, transportation, and storage. Therefore, in certain scenarios, it is necessary to perform a light cleaning of the surface ash on coal.

[0003] In the production of coal briquettes (coal powder pressed into shape) or coal-water slurry (a mixture of coal and water), if there is too much floating ash on the surface of the raw coal (especially high-ash rock powder floating ash), it will reduce the efficiency of the binder (making the briquettes easy to fall apart) or affect the stability of the coal-water slurry (layering, sedimentation), ultimately leading to insufficient product strength or reduced combustion efficiency.

[0004] Most existing coal washing equipment is heavy-duty washing equipment, designed to comprehensively remove various impurities from raw coal, including large amounts of gangue, inherent ash, and sulfur, separating the coal into different grades of products and ensuring that the clean coal meets the stringent quality standards for coking, chemical production, or high-quality power coal. This includes heavy media separators, jigs, and flotation machines. However, these devices have high operating costs and are not suitable for light ash washing.

[0005] Therefore, designing a lightweight yet efficient coal washing device is of great significance. Utility Model Content

[0006] This invention provides a coal ash cleaning device, which solves the problem that existing medium-to-heavy coal washing equipment is not suitable for coal ash cleaning.

[0007] This utility model provides a coal ash washing device, comprising:

[0008] frame;

[0009] A conveying mechanism is provided on the frame along the length of the frame;

[0010] A spraying mechanism is mounted on the frame and positioned above the conveyor belt mechanism;

[0011] A roller brush mechanism is mounted on the frame and positioned above the conveyor belt mechanism;

[0012] A water circulation mechanism is connected to the spraying mechanism and is located below the conveyor belt mechanism;

[0013] A rotating feeding cylinder is rotatably mounted on the frame and positioned above the feeding end with the conveying mechanism;

[0014] The belt conveyor mechanism is capable of draining water.

[0015] According to the coal ash washing device provided by this utility model, the belt conveyor mechanism includes:

[0016] Multiple conveyor wheels are arranged in parallel to each other and are rotatably mounted on the frame;

[0017] Multiple idlers are arranged in parallel to each other and rotatably mounted on the frame;

[0018] A mesh conveyor belt is connected to the conveyor wheel and the idler roller respectively, and the conveyor wheel is used to drive the mesh conveyor belt to circulate.

[0019] The first drive mechanism is connected to the drive wheel.

[0020] According to the coal ash cleaning device provided by this utility model, the spraying mechanism includes:

[0021] Multiple spray pipes are mounted on the frame in parallel rotation and positioned above the conveyor mechanism.

[0022] A swing mechanism, connected to the spray pipe, is used to swing the spray pipe.

[0023] According to the coal ash cleaning device provided by this utility model, the roller brush mechanism includes:

[0024] The first roller brush is rotatably mounted on the frame and positioned between the spray pipe and the belt conveyor mechanism;

[0025] The second drive mechanism is connected to the first roller brush drive.

[0026] According to the coal ash cleaning device provided by this utility model, the roller brush mechanism includes:

[0027] The second roller brush is rotatably mounted on the frame and positioned between the spray pipe and the belt conveyor mechanism; the rotating shaft of the second roller brush is a hollow structure and is connected to the water circulation mechanism, and the rotating shaft has multiple water spray holes along the axial direction;

[0028] The third drive mechanism is connected to the second roller brush drive.

[0029] According to the coal ash washing device provided by this utility model, the water circulation mechanism includes:

[0030] A liquid receiving pool is located below the conveyor belt and covers the spray range of the spraying mechanism;

[0031] A filter tank, connected to the receiving tank, is used to filter the turbid liquid in the receiving tank; the clear liquid outlet of the filter tank is connected to the spraying mechanism.

[0032] A liquid pump, connected to the receiving tank or filtration tank, is used to drive liquid circulation.

[0033] According to the coal ash washing device provided by this utility model, the rotating feed cylinder includes:

[0034] A roller is rotatably mounted on the frame along the width direction of the belt conveyor and is positioned above the feed end of the belt conveyor.

[0035] The teeth are multiple and arranged in a ring on the outer surface of the roller.

[0036] According to the coal ash washing device provided by this utility model, the swing mechanism includes:

[0037] Drive motor;

[0038] A rocker arm, one end of which is connected to the drive motor;

[0039] A connecting rod is provided along the arrangement direction of the spray pipes and extends to the outermost spray pipe; one end of the connecting rod is hinged to the other end of the rocker arm;

[0040] The swing arm has multiple arms, one end of which is connected to the spray pipe and the middle part is hinged to the connecting rod.

[0041] The coal ash cleaning device provided by this utility model can clean the floating ash of transported coal during the transportation process by setting a spraying mechanism and a roller brush mechanism on the conveyor belt, which can ensure cleaning while taking into account the transmission efficiency. The water circulation mechanism can realize the recycling of coal washing water. The rotating feeding cylinder can realize the uniform distribution of coal material at the inlet for cleaning of a larger area.

[0042] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0044] Figure 1 This is a first-view three-dimensional structural diagram of the coal ash cleaning device provided by this utility model;

[0045] Figure 2 This is a two-dimensional structural diagram of the coal ash cleaning device provided by this utility model from a second perspective.

[0046] Figure 3 This is a sectional three-dimensional structural diagram of the coal ash washing device provided by this utility model.

[0047] Figure 4 This is a three-dimensional structural diagram of the coal ash washing device with conveying mechanism provided by this utility model;

[0048] Figure 5 This is a three-dimensional structural diagram of the spray mechanism of the coal ash cleaning device provided by this utility model;

[0049] Figure 6 This is a three-dimensional structural diagram of the roller brush mechanism of the coal ash cleaning device provided by this utility model;

[0050] Figure 7 This is a three-dimensional structural diagram of another roller brush mechanism of the coal ash cleaning device provided by this utility model;

[0051] Figure 8 This is a schematic diagram of the installation position of the water circulation mechanism of the coal ash washing device provided by this utility model;

[0052] Figure 9 This is a three-dimensional structural diagram of the water circulation mechanism of the coal ash cleaning device provided by this utility model;

[0053] Figure 10 This is a schematic diagram of the installation position of the rotating feed cylinder of the coal ash washing device provided by this utility model;

[0054] Figure 11 This is a three-dimensional structural diagram of the swing mechanism of the coal ash cleaning device provided by this utility model;

[0055] Figure label:

[0056] 1. Frame; 2. Conveying mechanism; 201. Conveying wheel; 202. Idler roller; 203. Mesh conveyor belt; 204. First drive mechanism; 3. Spraying mechanism; 301. Spray pipe; 302. Swinging mechanism; 3021. Drive motor; 3022. Rocker arm; 3023. Connecting rod; 3024. Swing arm; 4. Roller brush mechanism; 401. First roller brush; 402. Second drive mechanism; 403. Second roller brush; 4031. Rotating shaft; 40311. Water spray hole; 404. Third drive mechanism; 5. Water circulation mechanism; 501. Liquid receiving tank; 502. Filter tank; 5021. Clear liquid outlet; 503. Liquid pump; 6. Rotary feeder cylinder; 601. Roller; 602. Feeding teeth. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0058] In the description of the embodiments of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0060] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] The following is combined with Figures 1 to 11 The embodiments shown illustrate the technical solution of this utility model:

[0063] This utility model embodiment provides a coal ash washing device, such as... Figures 1 to 3 As shown, it includes: frame 1, conveyor mechanism 2, spraying mechanism 3, roller brush mechanism 4, water circulation mechanism 5, and rotating feed cylinder 6;

[0064] The belt conveyor 2 is located along the length of the frame 1; the spraying mechanism 3 is located on the frame 1 and above the belt conveyor 2; the roller brush mechanism 4 is located on the frame 1 and above the belt conveyor 2; the water circulation mechanism 5 is connected to the spraying mechanism 3 and is located below the belt conveyor 2; the rotating feed cylinder 6 is rotatably installed on the frame 1 and above the feed end of the belt conveyor 2; the belt conveyor 2 is capable of draining water.

[0065] In this embodiment, the conveyor belt 2 is preferably a stainless steel mesh belt, which has good corrosion resistance and also has a drainage effect, allowing the wastewater generated during coal washing to pass through the conveyor belt 2 and fall into the water circulation mechanism 5. The conveyor belt 2 is set along the length of the frame 1, which can transport the coal along the length of the frame 1, facilitating large-area cleaning of the coal. At the same time, a spraying mechanism 3 is set above the conveyor belt 2, which can spray the surface of the coal transported to the spraying mechanism 3, so that most of the floating dust on the coal surface can be washed away by water. A roller brush mechanism 4 is also set above the conveyor belt 2, which can further scrape off the floating dust on the coal surface to achieve deep cleaning of the floating dust on the coal surface. At the same time, the spraying mechanism 3 is connected to the water circulation mechanism 5, which can realize the recycling of coal washing water. A rotating feeder 6 is set above the feed end of the conveyor belt 2, which disperses the coal at the feed inlet of the conveyor belt 2, so as not to cause stacking at the feed inlet.

[0066] The coal ash cleaning device provided in this embodiment of the utility model, by setting a spraying mechanism 3 and a roller brush mechanism 4 on the conveyor mechanism 2, can clean the floating ash of the transported coal during the coal transportation process, which ensures cleaning while taking into account the transmission efficiency; by setting a water circulation mechanism 5, the coal washing water can be recycled; by setting a rotating feeding cylinder 6, the coal material at the inlet can be evenly distributed to facilitate cleaning of a larger area.

[0067] According to the coal ash washing device provided in the embodiments of this utility model, such as Figure 1 and Figure 4 As shown, the conveyor mechanism 2 includes:

[0068] Multiple conveyor wheels 201 are arranged in parallel to each other and are rotatably mounted on the frame 1;

[0069] Multiple idler rollers 202 are arranged in parallel to each other and are rotatably mounted on the frame 1;

[0070] The mesh conveyor belt 203 is connected to the conveyor wheel 201 and the idler roller 202 respectively. The conveyor wheel 201 is used to drive the mesh conveyor belt 203 to circulate.

[0071] The first drive mechanism 204 is driven to connect with the transmission wheel 201.

[0072] It is understandable that the first drive mechanism 204 can be a combination of an AC or servo motor with a belt or gear set to make the conveyor wheel 201 rotate, so that the mesh conveyor belt 203 can be rotated cyclically by the conveyor wheel 201;

[0073] In this embodiment, the conveyor wheel 201 is driven to connect with the first drive mechanism 204, and the multiple conveyor wheels 201 are connected by belts. The first drive mechanism 204 drives the conveyor wheels 201 to rotate, thereby realizing the cyclic conveying of the mesh conveyor belt 203 connected to the conveyor wheel 201. The surface of the mesh conveyor belt 203 has multiple mesh holes, and the wastewater generated during the coal washing process can fall into the water circulation mechanism 5 through the mesh holes to achieve a drainage effect. At the same time, multiple idler rollers 202 are connected inside the mesh conveyor belt 203. The idler rollers 202 are in close contact with the conveying surface of the mesh conveyor belt 203, lifting the conveying surface to ensure the normal transportation of coal.

[0074] According to the coal ash washing device provided in the embodiments of this utility model, such as Figure 1 and Figure 5 As shown, the spraying mechanism 3 includes:

[0075] Multiple spray pipes 301 are mounted on the frame 1 in parallel rotation and are positioned above the conveying mechanism 2.

[0076] The swing mechanism 302 is connected to the spray pipe 301 and is used to swing the spray pipe 301.

[0077] It is understandable that the swing mechanism 302 can be driven by a motor, a cylinder, or a hydraulic cylinder, and can be combined with a gear set, a connecting rod crank slider assembly, a cam assembly, etc., so that the swing mechanism 302 can drive the spray pipe 301 to swing.

[0078] In this embodiment, multiple parallel spray pipes 301 are arranged above the conveyor belt 2. The spray pipes 301 are connected to a swing mechanism 302. The swing mechanism 302 is preferably a combination of a motor and a crank-connecting rod assembly. The swing mechanism 302 drives the spray pipes 301 to swing, thereby achieving reciprocating spraying of the coal on the conveyor belt 2 and thus deep cleaning of the coal surface.

[0079] According to the coal ash washing device provided in the embodiments of this utility model, such as Figure 1 , Figure 5 and Figure 6 As shown, the roller brush mechanism 4 includes:

[0080] The first roller brush 401 is rotatably mounted on the frame 1 and positioned between the spray pipe 301 and the conveyor mechanism 2;

[0081] The second drive mechanism 402 is driven and connected to the first roller brush 401.

[0082] It is understandable that the second drive mechanism 402 can be a combination of a servo motor and a belt or gear set, which can be connected to one end of the first roller brush 401 to make the first roller brush 401 rotate.

[0083] In this embodiment, the first roller brush 401 is rotatably mounted on the frame 1 and is located between the spray pipe 301 and the belt conveyor 2. The second drive mechanism 402 is preferably a servo motor, the output end of which is connected to a single first roller brush 401 by a belt. Adjacent first roller brushes 401 are also connected by a transmission belt. By rotating the second drive mechanism 402, the first roller brush 401 is driven to rotate, thereby achieving the purpose of roller brushing the coal on the belt conveyor 2 and washing away the floating ash with the help of the spray mechanism 3, ultimately achieving the cleaning effect of floating ash on the surface of the coal.

[0084] According to the coal ash washing device provided in the embodiments of this utility model, such as Figure 1 , Figure 5 and Figure 7 As shown, the roller brush mechanism 4 also includes:

[0085] The second roller brush 403 is rotatably mounted on the frame 1 and located between the spray pipe 301 and the belt conveyor 2; the rotating shaft 4031 of the second roller brush 403 is a hollow structure and is connected to the water circulation mechanism 5, and the rotating shaft 4031 is provided with multiple water spray holes 40311 along the axial direction.

[0086] The third drive mechanism 404 is driven and connected to the second roller brush 403.

[0087] It is understandable that the third drive mechanism 404 can also use the same structure as the second drive mechanism 402, or a combination of AC or servo motor with belt or gear set, as long as it can drive the second roller brush 403 to rotate.

[0088] In this embodiment, the second roller brush 403 has a hollow shaft 4031, and the shaft 4031 is provided with multiple water spray holes 40311 along the axial direction. The shaft 4031 of the second roller brush 403 is connected to the water circulation mechanism 5, so that the filtered coal washing water can be sprayed out from the water spray holes 40311 along the roller brush, further enhancing the cleaning effect on the floating ash on the coal surface.

[0089] According to the coal ash washing device provided in the embodiments of this utility model, such as Figure 1 , Figure 8 and Figure 9 As shown, the water circulation mechanism 5 includes:

[0090] Liquid receiving tank 501 is located below the conveyor mechanism 2 and covers the spray range of the spraying mechanism 3;

[0091] The filter tank 502 is connected to the receiving tank 501 and is used to filter the turbid liquid in the receiving tank 501; the clear liquid outlet 5021 of the filter tank 502 is connected to the spraying mechanism 3.

[0092] The liquid pump 503 is connected to the liquid receiving tank 501 or the filter tank 502 and is used to drive the liquid circulation.

[0093] In this embodiment, the liquid receiving pool 501 is located below the belt conveyor 2. Since the belt conveyor 2 has a water-draining effect, the water sprayed by the spraying mechanism 3 washes the coal on the belt conveyor 2 and drips into the liquid receiving pool 501 through the mesh on the surface of the belt conveyor 2. The liquid receiving pool 501 covers the entire spraying range of the spraying mechanism 3, so that the coal washing water will not fall to the ground in a large area, which is beneficial to the subsequent water circulation.

[0094] Furthermore, other coagulants such as polyaluminum chloride or polyacrylamide can be added to the filter tank 502 to accelerate the sedimentation of the coal washing water in the filter tank 502. The clear liquid port 5021 of the filter tank 502 is connected to the spray mechanism 3, so that the clear water in the filter tank 502 can be used as one of the water sources of the spray mechanism 3. At the same time, the liquid pump 503 is connected to the filter tank 502 or the liquid receiving tank 501, which can increase the water kinetic energy in the filter tank 502 or the liquid receiving tank 501 to ensure that the liquid can circulate.

[0095] According to the coal ash washing device provided in the embodiments of this utility model, such as Figure 1 and Figure 10 As shown, the rotating feed cylinder 6 includes:

[0096] Roller 601 is rotatably mounted on frame 1 along the width direction of belt conveyor 2 and is positioned above the feed end of belt conveyor 2;

[0097] The teeth 602 are multiple and arranged in a ring on the outer surface of the roller 601.

[0098] It is understandable that the teeth 602 can be rectangular, square, rhomboid or other irregular shapes. With the help of the rotation of the drum 601, the teeth 602 can disperse the coal at the feed end of the conveyor mechanism 2.

[0099] In this embodiment, the teeth 602 are preferably rectangular and arranged in a ring on the outer surface of the drum 601. The drum 601 is rotatably mounted at the feed end of the conveyor mechanism 2. When the motor drives the drum 601 to rotate through the belt, the teeth 602 can rotate synchronously to disperse the coal on the feed end, so that it will not be blocked at the feed inlet and prevent the coal from always accumulating in the middle of the conveyor belt.

[0100] According to the coal ash washing device provided in the embodiments of this utility model, such as Figure 1 and Figure 11 As shown, the swing mechanism 302 includes:

[0101] Drive motor 3021;

[0102] The rocker arm 3022 is connected at one end to the drive motor 3021;

[0103] A connecting rod 3023 is arranged along the arrangement direction of the spray pipes 301 and extends to the outermost spray pipe 301; one end of the connecting rod 3023 is hinged to the other end of the rocker arm 3022.

[0104] The swing arm 3024 has multiple arms, one end of which is connected to the spray pipe 301, and the middle part is hinged to the connecting rod 3023.

[0105] In this embodiment, the rotation of the drive motor 3021 drives the rocker arm 3022 to rotate. The rocker arm 3022 is hinged to one end of the connecting rod 3023. When the rocker arm 3022 rotates, the connecting rod 3023 rotates accordingly. A swing arm 3024 is hinged to the connecting rod 3023. When the connecting rod 3023 rotates, it drives the swing arm 3024 to swing. One end of the swing arm 3024 is connected to the spray pipe 301. Thus, the spray pipe 301 swings with the swing arm 3024, thereby performing reciprocating spray treatment on the floating ash on the coal surface.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A coal ash washing device, characterized in that, include: frame; A conveying mechanism is provided on the frame along the length of the frame; A spraying mechanism is mounted on the frame and positioned above the conveyor belt mechanism; A roller brush mechanism is mounted on the frame and positioned above the conveyor belt mechanism; A water circulation mechanism is connected to the spraying mechanism and is located below the conveyor belt mechanism; A rotating feeding cylinder is rotatably mounted on the frame and positioned above the feeding end with the conveying mechanism; The belt conveyor mechanism is capable of draining water.

2. The coal ash washing device according to claim 1, characterized in that, The belt conveyor mechanism includes: Multiple conveyor wheels are arranged in parallel to each other and are rotatably mounted on the frame; Multiple idlers are arranged in parallel to each other and rotatably mounted on the frame; A mesh conveyor belt is connected to the conveyor wheel and the idler roller respectively, and the conveyor wheel is used to drive the mesh conveyor belt to circulate. The first drive mechanism is connected to the drive wheel.

3. The coal ash washing device according to claim 1, characterized in that, The spraying mechanism includes: Multiple spray pipes are mounted on the frame in parallel rotation and positioned above the conveyor mechanism. A swing mechanism, connected to the spray pipe, is used to swing the spray pipe.

4. The coal ash washing device according to claim 3, characterized in that, The roller brush mechanism includes: The first roller brush is rotatably mounted on the frame and positioned between the spray pipe and the belt conveyor mechanism; The second drive mechanism is connected to the first roller brush drive.

5. The coal ash washing device according to claim 3, characterized in that, The roller brush mechanism includes: The second roller brush is rotatably mounted on the frame and positioned between the spray pipe and the belt conveyor mechanism; the rotating shaft of the second roller brush is a hollow structure and is connected to the water circulation mechanism, and the rotating shaft has multiple water spray holes along the axial direction; The third drive mechanism is connected to the second roller brush drive.

6. The coal ash washing device according to claim 1, characterized in that, The water circulation mechanism includes: A liquid receiving pool is located below the conveyor belt and covers the spray range of the spraying mechanism; A filter tank, connected to the receiving tank, is used to filter the turbid liquid in the receiving tank; the clear liquid outlet of the filter tank is connected to the spraying mechanism. A liquid pump, connected to the receiving tank or filtration tank, is used to drive liquid circulation.

7. The coal ash washing device according to claim 1, characterized in that, The rotating feed cylinder includes: A roller is rotatably mounted on the frame along the width direction of the belt conveyor and is positioned above the feed end of the belt conveyor. The teeth are multiple and arranged in a ring on the outer surface of the roller.

8. The coal ash washing device according to claim 3, characterized in that, The swing mechanism includes: Drive motor; A rocker arm, one end of which is connected to the drive motor; A connecting rod is provided along the arrangement direction of the spray pipes and extends to the outermost spray pipe; one end of the connecting rod is hinged to the other end of the rocker arm; The swing arm has multiple arms, one end of which is connected to the spray pipe and the middle part is hinged to the connecting rod.

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