CN218980715U - Coal pulverizer drum screen cleaning device - Google Patents
Coal pulverizer drum screen cleaning device Download PDFInfo
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- CN218980715U CN218980715U CN202222971671.5U CN202222971671U CN218980715U CN 218980715 U CN218980715 U CN 218980715U CN 202222971671 U CN202222971671 U CN 202222971671U CN 218980715 U CN218980715 U CN 218980715U
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Abstract
The utility model discloses a cleaning device for a drum screen of a coal mill, which comprises a spray pipe, a water pump, a water storage tank, a semi-cylindrical shell matched with the outer edge of the drum screen, and a drum shell covered on the outer sides of the drum screen and the semi-cylindrical shell; a spray pipe is fixed on the inner wall of one side of the roller shell, the spray pipe is arranged above the roller screen and is axially arranged along the roller screen, and a plurality of spray heads which are arranged towards the axis of the roller screen are uniformly arranged on the spray pipe along the length direction; the outer side of the roller shell is provided with a water pump and a water storage tank, the water outlet of the water storage tank is communicated with the inlet of the water pump, and the outlet of the water pump is communicated with the water inlet of the spray pipe; a rotatable semi-cylindrical shell is connected between the roller shell and the roller screen through a roller rotating shaft and a bearing, a coal slurry outlet is formed in the bottom of the semi-cylindrical shell, and an overflow pipeline is detachably communicated with the side wall of the semi-cylindrical shell.
Description
Technical field:
the utility model relates to the technical field of drum screen cleaning, in particular to a device for cleaning a drum screen of a coal mill.
The background technology is as follows:
the drum screen of the coal mill is a screening separation device, coal slurry discharged from the coal mill is filtered through the drum screen, after the coal slurry is filtered by the drum screen, coal powder particles with qualified granularity enter a discharge chute through the screen holes of the screen, large-particle coal powder with unqualified granularity enters a bin for collecting the large-particle coal powder through the cyclone channel of the drum screen, part of coal powder particles can be blocked on the screen holes to block the screen holes in the coal slurry screening process, and when the concentration of the coal slurry is higher and the viscosity is higher, the coal slurry is easy to paste the screen holes and is adhered to the inner wall of the drum screen, so that the coal powder particles with qualified granularity can not enter the discharge chute through the screen holes of the drum screen, basically form a large-particle slurry carrying phenomenon along with the large-particle coal powder through the cyclone channel of the drum screen, and waste is caused.
At present, aiming at the large-particle slurry-carrying phenomenon, the solution is as follows: the manual movement water pipe sprays the sparge water to the drum sieve screen cloth, dilute the coal slurry that glues on the inner wall of drum sieve screen cloth to utilize the impact force of water to wash down the buggy granule of card on the sieve mesh, for guaranteeing the cleaning effect, a large amount of sparge water can get into the blown down tank, dilutes the concentration of product coal slurry in the blown down tank, prolongs the time of coal slurry concentration, consumes manpower and materials, increases manufacturing cost, and the manual movement water pipe washs the in-process, makes the coal slurry spill to other equipment outward easily, increases the clearance work load of operating personnel.
The utility model comprises the following steps:
the utility model aims to provide a cleaning device for a drum screen of a coal mill, which solves the problems that manual flushing is time-consuming and labor-consuming and the concentration of coal slurry of a product is affected.
The utility model is implemented by the following technical scheme: a cleaning device for a drum screen of a coal mill comprises a spray pipe, a water pump, a water storage tank, a semi-cylindrical shell matched with the outer edge of the drum screen, and a drum shell covered on the outer sides of the drum screen and the semi-cylindrical shell;
the spraying pipe is fixed on the inner wall of one side of the roller shell, is arranged above the roller screen and is axially arranged along the roller screen, and a plurality of spray heads which are arranged towards the axis of the roller screen are uniformly arranged on the spraying pipe along the length direction;
the outer side of the roller shell is provided with the water pump and the water storage tank, the water storage tank is provided with a water filling port and a water supplementing port, the water outlet of the water storage tank is communicated with the inlet of the water pump through a pipeline, and the outlet of the water pump is communicated with the water inlet of the spray pipe through a flushing pipeline;
the rotary semi-cylindrical shell covered outside the rotary screen is arranged in the roller shell, a coal slurry outlet is formed in the bottom of the semi-cylindrical shell, an overflow port is formed in the side wall of the semi-cylindrical shell, and the overflow port is detachably connected with an overflow pipeline; when the semi-cylindrical shell rotates to the position right above the drum screen, the semi-cylindrical shell is fixed with the drum shell through a penetrating limiting pin.
Preferably, a first switching valve is installed on the flush line.
Preferably, an operation port is formed in the side wall of the bottom of the roller shell, a baffle is fixedly connected to the operation port, when the roller screen needs cleaning, the inlet end of the overflow pipeline sequentially penetrates through the baffle, the operation port is detachably connected with the overflow port, the outlet end of the overflow pipeline is communicated with the inlet of the filter, and the outlet of the filter is communicated with the water supplementing port of the water storage tank through a pipeline.
Preferably, the drum screen also comprises an air jet pipe, an air compressor and an air storage tank, wherein the air jet pipe is fixed on the inner wall of the other side of the drum shell, the air jet pipe is arranged above the drum screen and is axially arranged along the drum screen, and a plurality of spray heads which are arranged towards the axis of the drum screen are uniformly arranged on the air jet pipe along the length direction; the outer side of the roller shell is also provided with the air storage tank and the air compressor, the outlet of the air compressor is communicated with the inlet of the air storage tank through a pipeline, the outlet of the air storage tank is communicated with the air inlet of the air spraying pipe through an air pipeline, and a second switch valve is arranged on the air pipeline.
Preferably, an observation port is formed in the roller shell, a movable shield is hinged to the roller shell at the top of the observation port, a handle is arranged on the outer wall of the movable shield, and the flushing pipeline penetrates through the movable shield and the observation port to be communicated with a water inlet of the spray pipe.
The utility model has the advantages that: firstly, the utility model is provided with a spray pipe, a water pump, a water storage tank, an air jet pipe, an air compressor, an air storage tank, a semi-cylindrical shell capable of rotating around a rotary shaft of a rotary drum, and a rotary drum shell covered on the outer sides of the rotary drum sieve and the semi-cylindrical shell, wherein a coal slurry outlet is formed in the bottom of the semi-cylindrical shell, an overflow port is formed in the side wall of the semi-cylindrical shell, when the rotary drum sieve needs cleaning, the semi-cylindrical shell is rotated to be right below the rotary drum sieve, the semi-cylindrical shell is fixed with the rotary drum shell through a penetrating limiting pin, the water storage tank supplies flushing water to the spray pipe through the water pump, the air compressor supplies compressed air to the air jet pipe through the air storage tank, and simultaneously washes a screen of the rotary drum sieve through the compressed air and the flushing water, so that the cleaning efficiency is improved; the semi-cylindrical shell collects flushing slurry generated after flushing the drum screen, the flushing slurry is layered in the semi-cylindrical shell, when the flushing clear liquid on the upper layer reaches the height of the overflow port, the flushing clear liquid is discharged from the overflow port, and high-concentration coal slurry deposited at the bottom of the semi-cylindrical shell is discharged into the discharge chute through the coal slurry outlet, so that a large amount of flushing slurry is prevented from entering the discharge chute to dilute the concentration of the product coal slurry, the coal slurry concentration time is saved, and the production cost is reduced.
Secondly, overflow ports on the side wall of the semi-cylindrical shell are communicated with overflow pipelines, after flushing slurry is layered in the semi-cylindrical shell, flushing clear liquid on the upper layer enters the overflow pipelines from the overflow ports when reaching the height of the overflow ports, the outlet of the overflow pipelines is communicated with the inlet of a filter, flushing clear liquid in the overflow pipelines enters the filter, the outlet of the filter is communicated with a water supplementing port of a water storage tank through the pipelines, clean flushing water enters the water storage tank through the pipelines after the filter filters the flushing clear liquid, and the recycling of flushing water is realized, so that the waste of water resources is avoided.
Thirdly, the drum shell is arranged, so that coal slurry can be prevented from splashing to other equipment in the cleaning process of the drum screen, and the cleaning is difficult.
Description of the drawings:
in order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the present utility model in combination with a trommel and discharge chute.
Fig. 2 is a schematic view of the usage state of the present utility model.
Fig. 3 is a side view of a drum screen, drum shell, semi-cylindrical shell in combination.
The components in the drawings are marked as follows: the device comprises a spray pipe 1, a water pump 2, a water storage tank 3, a water filling port 3.1, a water supplementing port 3.2, an air injection pipe 4, an air compressor 5, an air storage tank 6, a semi-cylindrical shell 7, a coal slurry outlet 7.1, an overflow port 7.2, a roller shell 8, an observation port 8.1, an operation port 8.2, a roller screen 9, a movable shield 10, a handle 11, a flushing pipeline 12, a first switch valve 13, an air pipeline 14, a second switch valve 15, a bearing 16, a roller rotating shaft 17, a limiting pin 18, a baffle 20, an overflow pipeline 21, a filter 22 and a discharge chute 23.
The specific embodiment is as follows:
the following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "center," "upper," "lower," "front," "rear," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As shown in fig. 1-3, the cleaning device for the drum screen of the coal mill comprises a spray pipe 1, a water pump 2, a water storage tank 3, an air spraying pipe 4, an air compressor 5, an air storage tank 6, a semi-cylindrical shell 7 matched with the outer edge of the drum screen 9, and a drum shell 8 covered on the outer sides of the drum screen 9 and the semi-cylindrical shell 7, wherein the drum shell 8 is arranged parallel to the drum screen 9, and the problem that coal slurry splashes to other equipment during the cleaning process of the drum screen 9 to cause difficult cleaning is avoided by arranging the drum shell 8; an observation port 8.1 is formed in the roller shell 8, a movable shield 10 is hinged to the roller shell 8 at the top of the observation port 8.1 through a rotating shaft, a handle 11 is arranged on the outer wall of the movable shield 10, the movable shield 10 is conveniently opened by the aid of the handle 11, operators can observe the cleaning condition of the roller screen 9 conveniently, cleaning operation is finished timely, and resource waste is avoided;
a spray pipe 1 is fixed on the inner wall of one side of the roller shell 8, the spray pipe 1 is arranged above the roller screen 9 and is axially arranged along the roller screen, and a plurality of spray heads which are arranged towards the axis of the roller screen 9 are uniformly arranged on the spray pipe 1 along the length direction; a water pump 2 and a water storage tank 3 are arranged outside a roller shell 8 near a spray pipe 1, a water filling port 3.1 and a water supplementing port 3.2 are arranged on the water storage tank 3, a water outlet of the water storage tank 3 is communicated with an inlet of the water pump 2 through a pipeline, an outlet of the water pump 2 is communicated with an inlet end of a flushing pipeline 12, an outlet end of the flushing pipeline 12 sequentially passes through a movable shield 10 and an observation port 8.1 to be communicated with a water inlet of the spray pipe 1, a first switch valve 13 is arranged on the flushing pipeline 12, flushing water in the water storage tank 3 is sent into the spray pipe 1 through the water pump 2 and is sprayed to the surface of a roller screen 9 through a spray head, and coal slurry adhered to the inner wall of the roller screen 9 is cleaned, so that screening efficiency is improved;
an air ejector tube 4 is fixed on the inner wall of the other side of the roller shell 8, the air ejector tube 4 is arranged above the roller screen 9 and is axially arranged along the roller screen, and a plurality of spray heads which are arranged towards the axis of the roller screen 9 are uniformly arranged on the air ejector tube 4 along the length direction; an air compressor 5 and an air storage tank 6 are arranged outside a roller shell 8 near the air spraying pipe 4, an outlet of the air compressor 5 is communicated with an inlet of the air storage tank 6 through a pipeline, an outlet of the air storage tank 6 is communicated with an air inlet of the spraying pipe 1 through an air pipeline 14, a second switch valve 15 is arranged on the air pipeline 14, compressed air is sent into the air spraying pipe 4 through the air compressor 5 and sprayed onto the surface of the roller screen 9 through a spray nozzle, and in the rotating process of the roller screen 9, the compressed air and flushing water simultaneously sweep and flush the screen of the roller screen 9, so that the cleaning efficiency is improved;
a rotatable semi-cylindrical shell 7 covered outside the drum screen 9 is arranged in the drum shell 8, and the semi-cylindrical shell 7 is connected with a drum rotating shaft 17 through a bearing 16, specifically: the centers of the two semicircular surfaces of the semi-cylindrical shell 7 are respectively and vertically welded with a bearing 16, the outer ring of the bearing 16 is fixedly welded with the semicircular surfaces of the semi-cylindrical shell 7, the bearings 16 are respectively sleeved at two ends of the rotary shaft 17 of the roller, the inner ring of the bearing 16 is tightly matched with the rotary shaft 17 of the roller, the semi-cylindrical shell 7 is arranged to collect flushing slurry generated after flushing the rotary screen 9, a large amount of flushing slurry is prevented from entering the discharge chute 23 to dilute the concentration of the product coal slurry, the time for concentrating the coal slurry is saved, and the production cost is reduced; when the drum screen 9 performs screening operation, the semi-cylindrical shell 7 rotates to be right above the drum screen 9 and is fixed with the drum shell 8 by penetrating the limiting pin 18, when the drum screen 9 needs cleaning, the limiting pin 18 is pulled out, the semi-cylindrical shell 7 rotates to be below the drum screen 9 around the drum rotating shaft 17, flushing slurry generated after flushing the drum screen 9 is collected by the semi-cylindrical shell 7, when the drum screen 9 finishes cleaning, the semi-cylindrical shell 7 rotates to be above the drum screen 9 around the drum rotating shaft 17, and the limiting pin 18 is inserted, so that the semi-cylindrical shell 7 is fixed above the drum screen 9; the bottom of the semi-cylindrical shell 7 is provided with a coal slurry outlet 7.1, a third switch valve is arranged at the coal slurry outlet 7.1, and high-concentration coal slurry deposited at the bottom of the semi-cylindrical shell 7 is discharged from the coal slurry outlet 7.1; an overflow port 7.2 is formed in the side wall of the semi-cylindrical shell 7, an operation port 8.2 is formed in the side wall of the bottom of the roller shell 8, when the semi-cylindrical shell 7 rotates around the roller rotating shaft 17 to the lower side of the roller screen 9, the overflow port 7.2 corresponds to the operation port 8.2 in position, a baffle 20 is fixedly connected to the operation port 8.2 through bolts, a through hole is formed in the baffle 20, and an overflow pipeline 21 is connected to the overflow port 7.2, specifically: the inlet end of overflow line 21 passes baffle 20, operating port 8.2 and overflow port 7.2 and passes through the ring flange and dismantle the connection, and the exit end of overflow line 21 communicates with the import of filter 22, and the export of filter 22 passes through the pipeline intercommunication with the moisturizing mouth 3.2 of storage water tank 3, sets up filter 22 and filters the washing thick liquid, and clean wash water after the filtration gets into storage water tank 3 retrieval and utilization, realizes the cyclic utilization of washing water, avoids the water wasting, specifically does: when the flushing clear liquid in the upper layer in the semi-cylindrical shell 7 reaches the height of the overflow port 7.2, the flushing clear liquid enters the overflow pipeline 21 from the overflow port 7.2, and the flushing clear liquid in the overflow pipeline 21 enters the water storage tank 3 after being filtered by the filter 22 so as to realize the recycling of flushing water.
The utility model is provided with a spray pipe 1, a water pump 2, a water storage tank 3, an air ejector 4, an air compressor 5, an air storage tank 6, a semi-cylindrical shell 7 capable of rotating around a rotary shaft 17 of a rotary drum, and a rotary drum shell 8 covered on the outer sides of the rotary drum sieve 9 and the semi-cylindrical shell 7, wherein a coal slurry outlet 7.1 is formed in the bottom of the semi-cylindrical shell 7, an overflow port 7.2 is formed in the side wall of the semi-cylindrical shell 7, when the rotary drum sieve 9 needs to be cleaned, the semi-cylindrical shell 7 is rotated to be right below the rotary drum sieve 9, the semi-cylindrical shell 7 is fixed with the rotary drum shell 8 through penetrating a limiting pin 18, the water storage tank 3 supplies flushing water to the spray pipe 1 through the water pump 2, the air compressor 5 supplies compressed air to the air storage tank 4 through the air storage tank 6, and simultaneously sweeps and washes the screen of the rotary drum sieve 9, so that the cleaning efficiency is improved.
The semi-cylindrical shell 7 collects flushing slurry generated after the drum screen 9 is flushed, the flushing slurry is layered in the semi-cylindrical shell 7, when the upper layer flushing clear liquid reaches the height of the overflow port 7.2, the flushing clear liquid enters the overflow pipeline 21 from the overflow port 7.2, the outlet of the overflow pipeline 21 is communicated with the inlet of the filter 22, the flushing clear liquid in the overflow pipeline 21 enters the filter 22, the outlet of the filter 22 is communicated with the water supplementing port 3.2 of the water storage tank 3 through a pipeline, and clean flushing water enters the water storage tank 3 through the pipeline after the flushing clear liquid is filtered by the filter 22, so that the cyclic utilization of the flushing water is realized, and the waste of water resources is avoided;
in addition, the high-concentration coal slurry deposited at the bottom of the semi-cylindrical shell 7 is discharged into the discharge chute 23 through the coal slurry outlet 7.1, so that a large amount of flushing slurry is prevented from entering the discharge chute 23 to dilute the concentration of the product coal slurry, the coal slurry concentration time is saved, and the production cost is reduced.
The working process comprises the following steps: step 1: when the rotary screen 9 needs to be cleaned, firstly, the limiting pin 18 is pulled out, the semi-cylindrical shell 7 rotates around the rotary shaft 17 of the rotary drum to the lower part of the rotary screen 9, and then the limiting pin 18 is correspondingly inserted, so that the semi-cylindrical shell 7 is fixed below the rotary screen 9; then, overflow line 21 is installed, specifically operating as: the inlet end of the overflow pipeline 21 passes through the baffle 20, the operation port 8.2 and the overflow port 7.2 to be connected through a flange plate, and the baffle 20 is fixed on the roller shell 8 through bolts; finally, closing the third switch valve and starting the rotary screen 9;
step 2: the first switch valve 13 is opened, the water pump 2 is started, the water pump 2 sends flushing water into the spray pipe 1, the flushing water is sprayed to the surface of the drum screen 9 through a spray head, and the coal slurry adhered to the inner wall of the screen of the drum screen 9 is flushed; simultaneously, the second switch valve 15 is opened, the air compressor 5 is started, compressed air is sent into the air injection pipe 4 by the air compressor 5, and in the rotating process of the drum screen 9, the compressed air sweeps the screen to clean the pulverized coal particles clamped on the screen holes;
step 3: in the cleaning process, an operator can open the movable shield 10 through the handle 11, observe the cleaning condition of the rotary screen 9 through the observation port 8.1, and continue the step 2 according to the actual cleaning condition;
step 4: a large amount of flushing slurry is generated in the flushing process of the step 2, the flushing slurry is collected through the semi-cylindrical shell 7 rotating to the lower part of the rotary screen 9, the flushing slurry is layered in the semi-cylindrical shell 7, when the flushing clear liquid on the upper layer reaches the height of the overflow port 7.2, the flushing clear liquid enters the overflow pipeline 21 from the overflow port 7.2, the flushing clear liquid in the overflow pipeline 21 enters the filter 22, and after the filtering of the flushing clear liquid by the filter 22, clean flushing water enters the water storage tank 3 through the pipeline, so that the recycling of the flushing water is realized;
step 5: when an operator monitors that the concentration of the flushing clear liquid of the overflow port 7.2 is higher, the first switch valve 13 is closed, the water pump 2 is closed, the third switch valve is opened, the high-concentration coal slurry deposited at the bottom of the semi-cylindrical shell 7 is discharged into the discharge chute 23 through the coal slurry outlet 7.1, and after the high-concentration coal slurry is discharged, the third switch valve is closed, and the cleaning operation is continued until the rotary screen 9 is cleaned;
step 6: after the cleaning operation of the drum screen 9 is finished, the first switch valve 13, the water pump 2, the second switch valve 15 and the air compressor 5 are closed, the overflow pipeline 21 is disassembled, the limiting pin 18 is pulled out, the semi-cylindrical shell 7 is rotated to the upper side of the drum screen 9 around the drum rotating shaft 17, and then the limiting pin 18 is correspondingly inserted, so that the semi-cylindrical shell 7 is fixed above the drum screen 9.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (5)
1. The cleaning device for the drum screen of the coal mill is characterized by comprising a spray pipe, a water pump, a water storage tank, a semi-cylindrical shell matched with the outer edge of the drum screen, and a drum shell covered on the drum screen and the outer side of the semi-cylindrical shell;
the spraying pipe is fixed on the inner wall of one side of the roller shell, is arranged above the roller screen and is axially arranged along the roller screen, and a plurality of spray heads which are arranged towards the axis of the roller screen are uniformly arranged on the spraying pipe along the length direction;
the outer side of the roller shell is provided with the water pump and the water storage tank, the water storage tank is provided with a water filling port and a water supplementing port, the water outlet of the water storage tank is communicated with the inlet of the water pump through a pipeline, and the outlet of the water pump is communicated with the water inlet of the spray pipe through a flushing pipeline;
the rotary semi-cylindrical shell covered outside the rotary screen is arranged in the roller shell, a coal slurry outlet is formed in the bottom of the semi-cylindrical shell, an overflow port is formed in the side wall of the semi-cylindrical shell, and the overflow port is detachably connected with an overflow pipeline; when the semi-cylindrical shell rotates to the position right above the drum screen, the semi-cylindrical shell is fixed with the drum shell through a penetrating limiting pin.
2. The coal pulverizer bowl screen cleaning device of claim 1, wherein a first on-off valve is mounted on the flush line.
3. The coal mill rotary screen cleaning device according to claim 1, wherein an operation port is formed in the side wall of the bottom of the rotary screen casing, a baffle is fixedly connected to the operation port, when the rotary screen needs cleaning, the inlet end of the overflow pipeline sequentially penetrates through the baffle, the operation port is detachably connected with the overflow port, the outlet end of the overflow pipeline is communicated with the inlet of a filter, and the outlet of the filter is communicated with the water supplementing port of the water storage tank through a pipeline.
4. The coal mill drum screen cleaning device according to any one of claims 1-3, further comprising an air jet pipe, an air compressor and an air storage tank, wherein the air jet pipe is fixed on the inner wall of the other side of the drum shell, the air jet pipe is arranged above the drum screen and is axially arranged along the drum screen, and a plurality of spray heads which are arranged towards the axis of the drum screen are uniformly arranged on the air jet pipe along the length direction; the outer side of the roller shell is also provided with the air storage tank and the air compressor, the outlet of the air compressor is communicated with the inlet of the air storage tank through a pipeline, the outlet of the air storage tank is communicated with the air inlet of the air spraying pipe through an air pipeline, and a second switch valve is arranged on the air pipeline.
5. The coal pulverizer drum screen cleaning device of claim 4, wherein an observation port is formed in the drum shell, a movable shield is hinged to the drum shell at the top of the observation port, a handle is arranged on the outer wall of the movable shield, and the flushing pipeline penetrates through the movable shield and the observation port to be communicated with the water inlet of the spray pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222971671.5U CN218980715U (en) | 2022-11-08 | 2022-11-08 | Coal pulverizer drum screen cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222971671.5U CN218980715U (en) | 2022-11-08 | 2022-11-08 | Coal pulverizer drum screen cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218980715U true CN218980715U (en) | 2023-05-09 |
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ID=86223553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222971671.5U Active CN218980715U (en) | 2022-11-08 | 2022-11-08 | Coal pulverizer drum screen cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218980715U (en) |
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2022
- 2022-11-08 CN CN202222971671.5U patent/CN218980715U/en active Active
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