CN212531099U - Electromechanical transportation transmission device for underground operation coal transportation - Google Patents
Electromechanical transportation transmission device for underground operation coal transportation Download PDFInfo
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- CN212531099U CN212531099U CN202021188173.8U CN202021188173U CN212531099U CN 212531099 U CN212531099 U CN 212531099U CN 202021188173 U CN202021188173 U CN 202021188173U CN 212531099 U CN212531099 U CN 212531099U
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Abstract
An electromechanical transportation transmission device for underground operation coal transportation comprises a base, wherein a first cavity and a second cavity are formed in the base, a moving assembly is arranged in the first cavity, a first transmission roller is mounted on a first rotating shaft, a transmission assembly is arranged in the second cavity, a second transmission roller is mounted on a second rotating shaft, and a cleaning assembly is arranged at the upper end of the base; move about driving first transfer roller through removing the subassembly and understand, and then make the conveyer belt taut or lax, through transmission assembly and lead screw, nut piece cooperation drives the lift of top second transfer roller, can adjust the height of second transfer roller to the driven angle of coal transportation according to on-the-spot actual need, can clean the conveyer belt through cleaning the subassembly, can clean accumulational cinder on the conveyer belt and clear away, need not staff's manual clearance, can start dust absorption fan and inhale the dust collecting tank through dust absorption fill with the coal ash and the cinder that clean and store, coal ash has been avoided drifting around, cause the influence to external environment and workman.
Description
Technical Field
The utility model relates to a coal transportation transmission equipment technical field specifically is an electromechanical transportation transmission that is used for the coal transportation of underground operation.
Background
Coal mines are areas where humans mine coal resources in coal-rich mining areas, and are reasonable spaces excavated by humans when excavating coal-rich geological layers, and generally include roadways, wells, excavation surfaces and the like. Coal is a main solid fuel, is formed by gradually piling up luxuriant plants growing in certain geological age into thick layers in a proper geological environment, burying the thick layers in water bottom or silt and performing natural coalification in a long geological age, and has been recorded by human beings as early as the age of a neolithic apparatus. The coal supply is also related to the stability of the development of the industry of China and the aspect of the whole society, and the problem of the coal supply safety is also the most important part in the energy safety of China. In underground coal mine operation, the mined coal needs to be transported, and a transportation transmission device is needed.
Most of the existing underground operation coal transportation transmission devices are of fixed structures and do not have the function of adjusting the conveying angle, so that the application range is small, and the use is inconvenient; in addition, when the existing coal transportation transmission device transports coal, coal slag is often accumulated on the conveyor belt, so that the transportation of the coal is affected, workers often need to manually clean the coal, the workload of the workers is increased, and the working efficiency is reduced; meanwhile, when the coal slag is cleaned, the coal ash can float around, and influences are caused on the external environment and workers.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electromechanical transportation transmission that is used for the coal transportation of underground operation to solve the problem that appears among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
an electromechanical transportation transmission device for coal transportation of underground operation comprises a base, wherein a moving groove is formed in the upper end of the base, a first cavity and a second cavity are formed in the base, a moving assembly is arranged in the first cavity, a supporting plate is connected to the moving assembly, connecting seats are arranged on the supporting plate in the front and at the back, a first rotating shaft is rotatably connected to the connecting seats, a first driving roller is mounted on the first rotating shaft, a conveying belt is mounted on the first driving roller, a transmission assembly is arranged in the second cavity, two lead screws are rotatably connected to the upper wall of the base, nut blocks are screwed on the lead screws, a moving plate is fixedly connected between the nut blocks on two sides, two brackets are fixedly connected to the upper end of the moving plate, a first motor is arranged at the left end of each bracket, and a second rotating shaft is fixedly connected to the output end of the first motor, the second rotating shaft is rotatably connected to the support, a second driving roller is installed on the second rotating shaft and is in transmission connection with the first driving roller through a conveying belt, and a cleaning assembly is arranged at the upper end of the base.
Preferably, the electromechanical transportation transmission device for coal transportation of underground operation comprises a screw, the screw is rotatably connected to the side wall of the first cavity, a second motor is arranged on the outer wall of the left side of the base and fixedly connected to the left end of the screw, a moving block is screwed on the screw, a sliding block is fixedly connected to the lower end of the moving block, a sliding rail is slidably connected to the lower end of the sliding block and arranged at the bottom of the first cavity, and a moving groove and a lower end of the moving block are extended out of the upper end of the moving block and fixedly connected to the lower end of the supporting plate.
Preferably, an electromechanical transportation transmission that is used for the coal transportation of underground operation, the vibrations subassembly includes the second motor, transmission unit includes the third motor, the output rigid coupling of third motor has two first band pulleys, two all install the belt on the first band pulley, control the side the lead screw lower extreme rigid coupling has second band pulley and third band pulley respectively, the upside first band pulley passes through the belt and is connected with second band pulley and third band pulley transmission respectively.
Preferably, an electromechanical transportation transmission that is used for the coal transportation of underground operation, clean the subassembly and include two electric telescopic handle, first electric telescopic handle sets up in the base upper end, the flexible end rigid coupling of first electric telescopic handle has the lifter plate, lifter plate upper end left side articulates there is the rotor plate, lifter plate upper end right side is provided with second electric telescopic handle, the flexible end of second electric telescopic handle articulates in rotor plate right side lower extreme, the rotor plate upper end is provided with the fourth motor, the brush is cleaned in the installation of fourth motor output.
Preferably, the electromechanical transportation transmission device for coal transportation in underground operation is characterized in that a dust collection box is arranged at the upper end of the base, a dust collection fan is installed at the upper end of the dust collection box, the output end of the dust collection fan is communicated with the dust collection box, and the input end of the dust collection fan is communicated with a dust collection hopper.
Preferably, four corners of the bottom of the base are provided with universal wheels.
The utility model has the advantages that:
1. the utility model has reasonable structural design, the second motor is started to rotate, and the supporting plate, the connecting seat and the upper first transmission roller are driven to move left and right through the matching of the screw rod, the moving block, the slide rail and the moving block, so that the transmission belt is tensioned or loosened, the adjustability is good, and the applicability is high;
2. the third motor is started to be matched with the first belt wheel, the belt, the second belt wheel and the third belt wheel, the screw rods on two sides are driven to rotate at the same time, the nut block and the moving plate are matched to drive the second transmission roller above to lift, the height of the second transmission roller can be adjusted according to the actual coal transportation transmission angle on site, the coal transportation device is suitable for coal transportation under the conditions of different inclination angles, and the applicability is high;
3. the first electric telescopic rod is started to drive the cleaning brush to ascend, then the second electric telescopic rod is started to drive the rotating plate to rotate along a hinge point with the lifting plate, the angle of the cleaning brush can be adjusted according to the angle of the conveying belt, then the fourth motor is started to drive the cleaning brush to rotate, the conveying belt can be cleaned, coal cinder accumulated on the conveying belt can be cleaned, manual cleaning of workers is not needed, the workload of workers is reduced, and the working efficiency is improved;
4. the dust absorption fan can be started to absorb the cleaned coal ash and coal cinder through the dust absorption hopper and then discharge the coal ash and the coal cinder into the dust collection box for storage, so that the influence on the external environment and workers caused by the flying of the coal ash is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used for describing the embodiments are briefly introduced below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the right-side view portion of the present invention;
FIG. 3 is a schematic structural view of the moving assembly of the present invention;
fig. 4 is the schematic structural view of the cleaning assembly of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-base, 2-moving groove, 3-first cavity, 4-second cavity, 5-moving component, 501-screw rod, 502-second motor, 503-moving block, 504-sliding block, 505-sliding rail, 6-supporting plate, 7-connecting seat, 8-first rotating shaft, 9-first driving roller, 10-conveying belt, 11-driving component, 1101-third motor, 1102-first belt wheel, 1103-belt, 1104-second belt wheel, 1105-third belt wheel, 12-screw rod, 13-nut block, 14-moving plate, 15-bracket, 16-first motor, 17-second rotating shaft, 18-second driving roller, 19-sweeping component, 1901-first electric telescopic rod, 1902-lifting plate, 1903-rotating plate, 1904-second electric telescopic rod, 1905-fourth motor, 1906-cleaning brush, 20-dust box, 21-dust collection fan, 22-dust collection bucket, 23-universal wheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-4, the present embodiment is an electromechanical transmission device for transporting coal for underground operation, which includes a base 1, a moving slot 2 is disposed at the upper end of the base 1, a first cavity 3 and a second cavity 4 are disposed in the base, a moving component 5 is disposed in the first cavity 3, a supporting plate 6 is connected to the moving component 5, a connecting seat 7 is disposed at the front and rear of the supporting plate 6, a first rotating shaft 8 is rotatably connected to the connecting seat 7, a first rotating shaft 8 is mounted on the first rotating shaft 8, a conveying belt 10 is mounted on the first rotating roller 9, a transmission component 11 is disposed in the second cavity 4, two lead screws 12 are rotatably connected to the upper wall of the base 1, nut blocks 13 are screwed on the lead screws 12, a moving plate 14 is fixedly connected between the nut blocks 13 at two sides, two brackets 15 are fixedly connected to the upper end of the moving plate 14, a first motor 16 is disposed at, the output end of the first motor 16 is fixedly connected with a second rotating shaft 17, the second rotating shaft 17 is rotatably connected to the support 15, a second driving roller 18 is installed on the second rotating shaft 17, the second driving roller 18 is in transmission connection with the first driving roller 9 through a conveying belt 10, and the upper end of the base 1 is provided with a cleaning assembly 19.
The moving assembly 5 comprises a screw 501, the screw 501 is rotatably connected to the side wall of the first cavity 3, a second motor 502 is arranged on the outer wall of the left side of the base 1, the second motor 502 is fixedly connected to the left end of the screw 501, a moving block 503 is screwed on the screw 501, the lower end of the moving block 503 is fixedly connected with a sliding block 504, the lower end of the sliding block 504 is slidably connected with a sliding rail 505, the sliding rail 505 is arranged at the bottom of the first cavity 3, and the upper end of the moving block 503 extends out of the moving groove 2; the second motor 502 is started to rotate to drive the screw 501 to rotate, so that the moving block 503 is driven to move left and right along the slide rail 505 through the slide block 504, and then the moving block 503 drives the supporting plate 6, the connecting seat 7 and the first transmission roller 9 above the supporting plate to move left and right, so that the transmission belt 10 is tensioned or loosened.
The transmission assembly 11 comprises a third motor 1101, two first belt pulleys 1102 are fixedly connected to the output end of the third motor 1101, belts 1103 are mounted on the two first belt pulleys 1102, a second belt pulley 1104 and a third belt pulley 1105 are fixedly connected to the lower ends of the left and right side lead screws 12 respectively, and the upper first belt pulley 1102 is in transmission connection with the second belt pulley 1104 and the third belt pulley 1105 through the belts 1103 respectively; the third motor 1101 is started to rotate to drive the two first belt wheels 1102 to rotate, the two first belt wheels 1102 respectively drive the second belt wheels 1104 and the third belt wheels 1105 on two sides to rotate through the belt 1103, so that the screw rods 12 on two sides are simultaneously driven to rotate, the screw rods 12 on two sides rotate to simultaneously drive the screw blocks 13 on two sides to lift, the movable plate 14 and the second driving roller 18 above are driven to lift, and the height of the second driving roller 18 can be adjusted according to the coal transportation transmission angle according to the actual needs on site.
The cleaning assembly 19 comprises two first electric telescopic rods 1901, the first electric telescopic rods 1901 are arranged at the upper end of the base 1, the telescopic ends of the first electric telescopic rods 1901 are fixedly connected with a lifting plate 1902, the left side of the upper end of the lifting plate 1902 is hinged with a rotating plate 1903, the right side of the upper end of the lifting plate 1902 is provided with a second electric telescopic rod 1904, the telescopic ends of the second electric telescopic rods 1904 are hinged at the lower end of the right side of the rotating plate 1903, the upper end of the rotating plate 1903 is provided with a fourth motor 1905, and the output end of the fourth motor 1905 is provided with; start first electric telescopic handle 1901 and drive lifter plate 1902 and rise, and then drive top part and brush cleaner 1906 and rise, then start second electric telescopic handle 1904 and rise, and then drive rotor plate 1903 along rotating with lifter plate 1902 pin joint, can drive brush cleaner 1906 turned angle, can adjust brush cleaner 1906 angle according to the angle of conveyer belt 10, then start fourth motor 1905 and drive brush cleaner 1906 and rotate, can clean conveyer belt 10, can clean the accumulational cinder on the conveyer belt and clear away.
The upper end of the base 1 is provided with a dust collection box 20, the upper end of the dust collection box 20 is provided with a dust collection fan 21, the output end of the dust collection fan 21 is communicated with the dust collection box 20, and the input end of the dust collection fan 21 is communicated with a dust collection hopper 22; the dust collection fan 21 is started to suck the cleaned coal ash and coal cinder through the dust collection hopper 22, and then the cleaned coal ash and coal cinder are discharged into the dust collection box 20 for storage, so that the influence on the external environment and workers caused by the coal ash floating everywhere is avoided.
The utility model discloses a theory of operation does:
when the device is used, the device is firstly moved to the position for coal transportation in underground operation through the universal wheel 23, then the second motor 502 is started to rotate to drive the screw 501 to rotate, and then the moving block 503 is driven to move rightwards along the slide rail 505 through the slide block 504, and then the moving block 503 drives the support plate 6, the connecting seat 7 and the first transmission roller 9 above the support plate to move rightwards, so that the conveyor belt 10 is loosened. Then start third motor 1101 and rotate and drive two first pulleys 1102 and rotate, two first pulleys 1102 drive the second band pulley 1104 and the rotation of third band pulley 1105 of both sides respectively through belt 1103, thereby it rotates to drive both sides lead screw 12 simultaneously, both sides lead screw 12 rotates and drives both sides nut block 13 simultaneously and goes up and down, thereby it goes up and down to drive movable plate 14 and top second driving roller 18, can adjust the height of second driving roller 18 to the driven angle of coal transportation according to on-the-spot actual need, be applicable to the coal transportation under the different inclination angle circumstances, therefore, the high-speed coal conveying device is high in applicability, convenient and practical. After the height is adjusted, the support plate 6, the connecting seat 7 and the upper first driving roller 9 are driven to move left again by the moving assembly 5 until the conveyor belt 10 between the first driving roller 9 and the second driving roller 18 is tensioned. Then, the first motor 16 is started to rotate to drive the second rotating shaft 17 and the second transmission roller 18 to rotate, so that the conveyor belt 10 can be driven to carry out transportation transmission, and the coal can be put on the conveyor belt 10 to be transported. Start first electric telescopic handle 1901 simultaneously and drive lifter plate 1902 and rise, and then drive top part and brush cleaner 1906 and rise, then start second electric telescopic handle 1904 and rise, and then drive rotor plate 1903 along rotating with lifter plate 1902 pin joint, can drive brush cleaner 1906 turned angle, can adjust brush cleaner 1906 angle according to the angle of conveyer belt 10, then start fourth motor 1905 and drive brush cleaner 1906 and rotate, can clean conveyer belt 10, can clean the accumulational cinder on the conveyer belt and clear away, need not the manual clearance of staff, the work load of workman has been reduced, and the work efficiency is improved. Meanwhile, the dust suction fan 21 can be started to suck the cleaned coal ash and coal cinder through the dust suction hopper 22, and then the cleaned coal ash and coal cinder are discharged into the dust collection box 20 for storage, so that the influence on the external environment and workers caused by the scattering of the coal ash is avoided.
The electrical components are externally connected with a power supply, and the control mode is common knowledge, so that the detailed description is omitted in the specification.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Claims (6)
1. An electromechanical transport transmission for the transport of coal for underground operations, comprising a base (1), characterized in that: the movable type automatic conveying device is characterized in that a movable groove (2) is formed in the upper end of the base (1), a first cavity (3) and a second cavity (4) are formed in the base (1), a movable assembly (5) is arranged in the first cavity (3), a supporting plate (6) is connected onto the movable assembly (5), a connecting seat (7) is arranged on the supporting plate (6) in the front and at the back, a first rotating shaft (8) is connected onto the connecting seat (7) in a rotating mode, a first rotating shaft (9) is installed on the first rotating shaft (8), a conveying belt (10) is installed on the first rotating shaft (9), a transmission assembly (11) is arranged in the second cavity (4), two screw rods (12) are connected onto the upper wall of the base (1) in a rotating mode, nut blocks (13) are connected onto the screw rods (12) in a screwing mode, and a movable plate (14) is, movable plate (14) upper end rigid coupling has two supports (15), the left side support (15) left end is provided with first motor (16), first motor (16) output rigid coupling has second pivot (17), second pivot (17) rotate to be connected in support (15), install second driving roller (18) in second pivot (17), second driving roller (18) are connected with first driving roller (9) transmission through conveyer belt (10), base (1) upper end is provided with cleans subassembly (19).
2. An electro-mechanical transport transmission for coal transport for underground operations as claimed in claim 1 wherein: the movable assembly (5) comprises a screw rod (501), the screw rod (501) is rotatably connected to the side wall of the first cavity (3), a second motor (502) is arranged on the outer wall of the left side of the base (1), the second motor (502) is fixedly connected to the left end of the screw rod (501), a movable block (503) is connected to the screw rod (501) in a threaded mode, a sliding block (504) is fixedly connected to the lower end of the movable block (503), a sliding rail (505) is connected to the lower end of the sliding block (504) in a sliding mode, the sliding rail (505) is arranged at the bottom of the first cavity (3), and a movable groove (2) and a lower end of a supporting plate (6) are extended out.
3. An electro-mechanical transport transmission for coal transport for underground operations as claimed in claim 1 wherein: the transmission assembly (11) comprises a third motor (1101), two first belt wheels (1102) are fixedly connected to the output end of the third motor (1101), two belts (1103) are mounted on the first belt wheels (1102), the left side and the right side are fixedly connected to the lower end of the screw rod (12) respectively and are provided with a second belt wheel (1104) and a third belt wheel (1105), and the first belt wheel (1102) is in transmission connection with the second belt wheel (1104) and the third belt wheel (1105) through the belts (1103).
4. An electro-mechanical transport transmission for coal transport for underground operations as claimed in claim 1 wherein: cleaning subassembly (19) and including two electric telescopic handle (1901), first electric telescopic handle (1901) sets up in base (1) upper end, the flexible end rigid coupling of first electric telescopic handle (1901) has lifter plate (1902), lifter plate (1902) upper end left side articulates there is rotor plate (1903), lifter plate (1902) upper end right side is provided with second electric telescopic handle (1904), the flexible end of second electric telescopic handle (1904) articulates in rotor plate (1903) right side lower extreme, rotor plate (1903) upper end is provided with fourth motor (1905), brush cleaner (1906) is installed to fourth motor (1905) output.
5. An electro-mechanical transport transmission for coal transport for underground operations as claimed in claim 1 wherein: the dust collecting box (20) is arranged at the upper end of the base (1), the dust collecting fan (21) is installed at the upper end of the dust collecting box (20), the output end of the dust collecting fan (21) is communicated with the dust collecting box (20), and the input end of the dust collecting fan (21) is communicated with the dust collecting hopper (22).
6. An electro-mechanical transport transmission for coal transport for underground operations as claimed in claim 1 wherein: the universal wheels (23) are installed at four corners of the bottom of the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021188173.8U CN212531099U (en) | 2020-06-24 | 2020-06-24 | Electromechanical transportation transmission device for underground operation coal transportation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021188173.8U CN212531099U (en) | 2020-06-24 | 2020-06-24 | Electromechanical transportation transmission device for underground operation coal transportation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212531099U true CN212531099U (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021188173.8U Expired - Fee Related CN212531099U (en) | 2020-06-24 | 2020-06-24 | Electromechanical transportation transmission device for underground operation coal transportation |
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| Country | Link |
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| CN (1) | CN212531099U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113264323A (en) * | 2021-06-10 | 2021-08-17 | 河南金港节能建材有限公司 | Automatic color sand feeding device |
| CN113682729A (en) * | 2021-10-26 | 2021-11-23 | 邳州东泰食品有限公司 | Melon and fruit processing is with transportation charging equipment |
| CN113879770A (en) * | 2021-11-05 | 2022-01-04 | 武汉新方正塑业股份有限公司 | Plastic uptake box conveyer belt for production line with adsorb function |
| CN113998387A (en) * | 2021-11-04 | 2022-02-01 | 国网辽宁省电力有限公司铁岭供电公司 | Power transmission and transformation electric power engineering foundation pit soil conveying device |
| CN114162556A (en) * | 2021-12-06 | 2022-03-11 | 尤佩华 | Movable dust removal device and dust removal method for feed production and processing |
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2020
- 2020-06-24 CN CN202021188173.8U patent/CN212531099U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113264323A (en) * | 2021-06-10 | 2021-08-17 | 河南金港节能建材有限公司 | Automatic color sand feeding device |
| CN113682729A (en) * | 2021-10-26 | 2021-11-23 | 邳州东泰食品有限公司 | Melon and fruit processing is with transportation charging equipment |
| CN113682729B (en) * | 2021-10-26 | 2022-04-15 | 邳州东泰食品有限公司 | Melon and fruit processing is with transportation charging equipment |
| CN113998387A (en) * | 2021-11-04 | 2022-02-01 | 国网辽宁省电力有限公司铁岭供电公司 | Power transmission and transformation electric power engineering foundation pit soil conveying device |
| CN113879770A (en) * | 2021-11-05 | 2022-01-04 | 武汉新方正塑业股份有限公司 | Plastic uptake box conveyer belt for production line with adsorb function |
| CN113879770B (en) * | 2021-11-05 | 2023-08-08 | 武汉新方正塑业股份有限公司 | Conveyor belt with adsorption function for plastic suction box production line |
| CN114162556A (en) * | 2021-12-06 | 2022-03-11 | 尤佩华 | Movable dust removal device and dust removal method for feed production and processing |
| CN114162556B (en) * | 2021-12-06 | 2024-05-07 | 南通金伟农畜牧科技有限公司 | Movable dust removing device and dust removing method for feed production and processing |
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Granted publication date: 20210212 Termination date: 20210624 |