Intelligent dust fog collecting equipment for green construction site
By designing spray, dust collection and collection mechanism in the dust collection box, the shortcomings of existing equipment in capturing dust, automatic cleaning and storage are solved, and the effect of effectively reducing dust concentration, improving air quality and improving cleaning efficiency is achieved.
Patent Information
- Application Number
- CN202510436502.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2025-05-23
AI Technical Summary
The existing green construction site intelligent dust collection equipment has shortcomings in capturing air dust, automatic cleaning and dust storage, resulting in high dust concentration, low construction efficiency and high cleaning difficulty.
A dust collecting box is designed, including a spray mechanism, a dust collecting mechanism and a collection mechanism. The spray mechanism combines water mist with dust through the fan and the nozzle to suppress the dust from drifting; the dust collecting mechanism automatically scrapes the dust on the collection plate through the cooperation of the reciprocating screw and the slider; the collection mechanism conveniently pushes the dust out of the storage plate through the design of the hinge plate and the scraper.
Effectively capture dust particles in the air, significantly reduce dust concentration at the construction site, improve air quality, reduce harm to construction personnel and the environment, improve cleaning efficiency, and reduce labor costs.
Smart Images

Figure CN120022688A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of green construction, and in particular to intelligent dust and mist collection equipment for green construction sites. Background Art
[0002] At present, with the accelerated advancement of urbanization, the scale of construction continues to expand, and the number of construction sites continues to increase. However, a large amount of dust pollution will inevitably be generated during the construction process, which has brought many serious problems to the environment and people's health. The dust generated at the construction site mainly comes from earth excavation, material handling, concrete mixing, mechanical equipment operation and other links. These dusts are scattered in the air, which not only reduces the air quality of the construction site and surrounding areas, but also causes great interference to the normal life of surrounding residents. What is more serious is that long-term exposure to high-concentration dust environment makes construction workers very likely to suffer from respiratory diseases, lung diseases, etc., which seriously threatens their health.
[0003] However, the existing green construction site intelligent dust and mist collection equipment has the following defects during use:
[0004] (1) It is not easy to effectively capture dust particles in the air. The collection method is relatively simple, mostly simple adsorption or blocking. As a result, the dust concentration at the construction site remains high for a long time, seriously affecting the air quality of the construction environment.
[0005] (2) It is not convenient to use an automatic cleaning mechanism, and the dust and water mist accumulated on the collection plate can only be cleaned manually. This means that construction workers need to frequently interrupt their work and regularly climb up the equipment to clean the collection plate, which not only consumes a lot of manpower, but also greatly affects construction efficiency.
[0006] (3) Traditional devices often require construction workers to manually dig dust out of the storage plate. This process is extremely cumbersome. Construction workers need to use tools and work hard in the narrow storage space, which greatly increases the difficulty of cleaning. Summary of the invention
[0007] In order to solve certain technical problems existing in the prior art, one of the purposes of this application is to provide an intelligent dust and mist collection device for green construction sites. By setting up a spray mechanism, the problem of inconvenience in effectively capturing dust particles in the air is solved. The collection method is relatively simple, mostly simple adsorption or blocking, which leads to the dust concentration at the construction site being high for a long time, seriously affecting the air quality of the construction environment.
[0008] The second purpose of this application is to provide an intelligent dust and mist collection device for green construction sites. By setting up a dust collection mechanism, it is not convenient for the automatic cleaning mechanism, and the dust and water mist combination accumulated on the collection plate can only be cleaned manually. This means that construction personnel need to frequently interrupt the work at hand and regularly climb up the equipment to clean the collection plate, which not only consumes a lot of manpower, but also greatly affects the construction efficiency.
[0009] The second purpose of this application is to provide an intelligent dust and mist collection device for green construction sites. By setting up a collection mechanism, traditional devices often require construction workers to manually dig out dust from the storage plate. This process is extremely cumbersome. Construction workers need to use tools and work hard in the narrow storage space, which greatly increases the difficulty of cleaning.
[0010] In order to solve the above existing technical problems, one of the purposes of this application is achieved by adopting the following technical solution:
[0011] It includes a dust collecting box, on which a spray mechanism, a dust collecting mechanism and a collection mechanism are arranged;
[0012] The spray mechanism includes an air intake pipe connected to the left side of the dust box, the inner wall of the air intake pipe is fixedly connected to a fan, two rotating rings are provided on the air intake pipe, the outer walls of the two rotating rings are fixedly connected to bevel gears, and two circular sliding grooves are provided on the two rotating rings. The dust collecting mechanism includes a fixed rod fixedly connected to the front and rear inner walls of the dust box, and the collecting mechanism includes a hinged plate hingedly arranged on the front side of the dust box.
[0013] Optionally, the inner walls of several circular slide grooves are slidably connected to several slide rods 1, the sides of several slide rods 1 away from the rotating ring are fixedly connected to the air inlet pipe, the inner walls of two rotating rings are rotatably connected to fixed rings, and the two fixed rings are connected to several nozzles.
[0014] Optionally, a water pipe is connected to the two rotating rings, and the rear side of the water pipe extends to the outside of the air inlet pipe. A fixed plate is fixedly connected to the right side of the dust box, and a rotating shaft is rotatably connected to the inner wall of the fixed plate. A second bevel gear is fixedly connected to the outer wall of the rotating shaft, and the second bevel gear is meshed with two first bevel gears.
[0015] The second purpose of this application is achieved by the following technical solution:
[0016] Preferably, a collecting plate is fixedly connected to the inner wall of the dust collecting box, two sliding grooves are provided on the collecting plate, and the sides of the two fixing rods close to each other are fixedly connected to a limiting plate.
[0017] Preferably, the two limit plates are hingedly provided with limit rods, the limit rods are in contact with the slide slot 1, the inner walls of the two slide slots 1 are slidably connected with slide rods, and the outer walls of the slide rods are fixedly connected with two fixed blocks.
[0018] Preferably, a scraper rod is fixedly connected to the bottom of the two fixed blocks, a reciprocating screw rod is rotatably connected to the left side of the dust box, the right side of the reciprocating screw rod extends into the dust box, and a bevel gear three is fixedly connected to the outer wall of the reciprocating screw rod.
[0019] Preferably, the outer wall of the rotating shaft is fixedly connected with bevel gear four, and the bevel gear four is hinged with the bevel gear three-phase, the left side of the dust collecting box is fixedly connected with a motor frame, the inner wall of the motor frame is fixedly connected with a motor, and the output shaft of the motor is fixedly connected with the reciprocating screw through a coupling.
[0020] Preferably, the inner wall of the dust box is fixedly connected with a sliding rod 2, the outer walls of the sliding rod 2 and the reciprocating screw are fixedly connected with a sliding block, the sliding block located on the front side is threadedly connected to the reciprocating screw, the tops of the two fixed blocks are fixedly connected with a telescopic rod, the outer walls of the two telescopic rods are sleeved with springs, the tops of the two springs are respectively fixedly connected to the two sliding blocks, and the bottoms of the two springs are respectively fixedly connected to the two fixed blocks.
[0021] The second purpose of this application is achieved by the following technical solution:
[0022] Preferably, a material storage plate is fixedly connected to the inner wall of the dust box, a second slide groove is opened on the right side of the dust box, a scraper is slidably connected to the inner wall of the material storage plate, and the right side of the scraper extends outside the second slide groove.
[0023] Compared with the prior art, the present invention has the following beneficial effects:
[0024] (1) By setting up a spray mechanism, the fan and the motor are started. After the fan is started, the air and the dust mixed in the air will be sucked into the air inlet pipe, and then the water pipe is opened. At this time, the water in the water pipe will pass through the fixed ring and the nozzle on the rotating ring and spray into the air inlet pipe. As the fan brings air in and blows it into the dust box, it will come into contact with the water. When the motor rotates, it will drive the reciprocating screw and bevel gear three to rotate with it. When rotating, bevel gear four will also be driven by bevel gear three to rotate. Then bevel gear four will drive the rotating shaft on the fixed plate to rotate, and then the rotating shaft will drive bevel gear two to rotate. At this time, bevel gear two will pass through the belt When the two bevel teeth rotate in opposite directions, the two rotating rings will also rotate accordingly, and then the water sprayed from the nozzle on the rotating ring and the fixed ring will have a more comprehensive contact, and then the fan blows the combination of water mist and dust, thereby achieving the effect of suppressing the dust spray, so that the dust particles in the air can be effectively captured and the dust can be quickly settled, thereby significantly reducing the dust concentration at the construction site, improving the air quality of the construction environment, reducing the harm of dust to the health of construction workers, and also helping to reduce the pollution of dust to the surrounding environment.
[0025] (2) By setting up a collection mechanism, when the combination of water mist and dust falls onto the collection plate, the reciprocating screw will rotate to slide the slider on its outer wall. At this time, the slider will also move with the slide bar, fixed block, scraper bar, telescopic rod and spring. When the slide bar moves, it will slide in the slide groove 1, and the rear slider will also slide on the outer wall of the slide bar 2. With the continuous movement, the slide bar will contact the limit rod, and the slide rod will lift the limit rod. Then the slide bar will pass through the limit rod. After passing through the slide groove, the rod will move upward due to the arc movement, and then it will fall when it slides to the left. After falling, the scraper rod will contact the collecting plate, and then it will scrape the impurities on the collecting plate. With continuous scraping, the impurities will reach the right side, thereby achieving the effect of concentrating the impurities, so that the impurities on the collecting plate can be scraped regularly, without the need for frequent manual cleaning, saving labor costs, improving cleaning efficiency, ensuring the cleanliness of the collecting plate, and enabling it to continuously and effectively collect the combination of dust and water mist.
[0026] (3) By setting up a collection mechanism, after reaching the right side, the scraper rod will scrape it into the storage plate. As time goes by, the storage plate will be full. After it is full, the hinged plate can be opened. After opening, the scraper plate can be slid. At this time, the scraper plate will slide on the second slide groove. Then the scraper plate will push the impurities in the storage plate and make them fall out from the hinged plate. In this way, the dust collection effect can be achieved, so that the impurities can be easily pushed out of the storage plate and fall out from the hinged plate, which is convenient for centralized processing of the collected dust. There is no need to manually dig the dust out of the storage plate, which reduces the difficulty and workload of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 A partial cross-section of the present invention as a whole, showing a reciprocating screw rod;
[0028] Figure 2 For the present invention as a whole, a dust box is shown;
[0029] Figure 3 A partial cross-sectional view of the spray mechanism of the present invention is shown, showing the air inlet pipe;
[0030] Figure 4 A partial cross-sectional view of the collecting mechanism of the present invention is shown, showing a material storage plate;
[0031] Figure 5 For the present invention Figure 3 A zoom-in of center A, showing the intake duct;
[0032] Figure 6 For the present invention Figure 3 The enlargement of middle B shows the intake duct;
[0033] Figure 7 For the present invention Figure 3 A zoom-in of center C, showing the intake duct;
[0034] Figure 8 For the present invention Figure 4 The enlargement of center D shows the intake duct;
[0035] Fig. 9 For the present invention Figure 1 The enlargement of center E shows the intake duct;
[0036] Fig.10 For the present invention Figure 1 The enlargement of center F shows the intake duct;
[0037] In the figure: 1, dust collecting box; 2, spray mechanism; 211, air inlet pipe; 212, fan; 213, rotating ring; 214, bevel gear 1; 215, circular slide; 216, slide bar 1; 217, fixed ring; 218, nozzle; 219, water pipe; 2110, fixed plate; 2111, rotating shaft; 2112, bevel gear 2; 3, dust collecting mechanism; 311, fixed rod; 312, collecting plate; 313, slide bar 1; 314, limit Positioning plate; 315, limiting rod; 316, sliding rod; 317, fixing block; 318, scraper rod; 319, reciprocating screw; 3110, bevel gear three; 3111, bevel gear four; 3112, motor frame; 3113, motor; 3114, sliding rod two; 3115, slider; 3116, telescopic rod; 3117, spring; 4, collecting mechanism; 411, hinged plate; 412, storage plate; 413, chute two; 414, scraper. DETAILED DESCRIPTION
[0038] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.
[0039] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.
[0040] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.
[0041] Embodiment 1: includes a dust collecting box 1, on which a spray mechanism 2, a dust collecting mechanism 3 and a collecting mechanism 4 are arranged, the spray mechanism 2 includes an air inlet pipe 211 connected to the left side of the dust collecting box 1, the inner wall of the air inlet pipe 211 is fixedly connected to a fan 212, the air inlet pipe 211 is provided with two rotating rings 213, the outer walls of the two rotating rings 213 are fixedly connected to a bevel gear 214, the two rotating rings 213 are provided with two circular slide grooves 215, the inner walls of several circular slide grooves 215 are slidably connected to several slide bars 216, the side of several slide bars 216 away from the rotating ring 213 is fixedly connected to the air inlet pipe 211, the inner walls of the two rotating rings 213 are rotatably connected to a fixed ring 217, and the two fixed The ring 217 is connected to a plurality of nozzles 218, and the two rotating rings 213 are connected to water pipes 219. The rear side of the water pipes 219 extends to the outside of the air inlet pipe 211. A fixed plate 2110 is fixedly connected to the right side of the dust collecting box 1. The inner wall of the fixed plate 2110 is rotatably connected to a rotating shaft 2111. The outer wall of the rotating shaft 2111 is fixedly connected to a second bevel gear 2112. The second bevel gear 2112 is meshed with the two first bevel gears 214. By setting up the spray mechanism 2, dust particles in the air can be effectively captured and the dust can be quickly settled, thereby significantly reducing the dust concentration at the construction site, improving the air quality of the construction environment, reducing the harm of dust to the health of construction workers, and also helping to reduce the pollution of dust to the surrounding environment.
[0042] Embodiment 2: The dust collecting mechanism 3 includes a fixed rod 311 fixedly connected to the inner wall of the front and rear sides of the dust collecting box 1, the inner wall of the dust collecting box 1 is fixedly connected with a collecting plate 312, and two slide grooves 313 are provided on the collecting plate 312. The two fixed rods 311 are fixedly connected to the limiting plates 314 on the sides close to each other. The limiting rods 315 are hingedly provided on the two limiting plates 314. The limiting rods 315 are in contact with the slide grooves 313, and the inner walls of the two slide grooves 313 are slidably connected with the sliding rods 314. 16, the outer wall of the slide rod 316 is fixedly connected to two fixed blocks 317, the bottom of the two fixed blocks 317 is fixedly connected to a scraper rod 318, the left side of the dust box 1 is rotatably connected to a reciprocating screw rod 319, the right side of the reciprocating screw rod 319 extends into the dust box 1, the outer wall of the reciprocating screw rod 319 is fixedly connected to a bevel gear three 3110, the outer wall of the rotating shaft 2111 is fixedly connected to a bevel gear four 3111, the bevel gear four 3111 is hinged with the bevel gear three 3110, and the left side of the dust box 1 is fixedly connected There is a motor frame 3112, the inner wall of the motor frame 3112 is fixedly connected to a motor 3113, the output shaft of the motor 3113 is fixedly connected to the reciprocating screw rod 319 through a coupling, the inner wall of the dust collecting box 1 is fixedly connected to a sliding bar 2114, the outer walls of the sliding bar 2114 and the reciprocating screw rod 319 are fixedly connected to a sliding block 3115, the front sliding block 3115 is threadedly connected to the reciprocating screw rod 319, the tops of the two fixed blocks 317 are fixedly connected to a telescopic rod 3116, the outer walls of the two telescopic rods 3116 are sleeved with springs 3117, the tops of the two springs 3117 are fixedly connected to the two sliding blocks 3115 respectively, and the bottoms of the two springs 3117 are fixedly connected to the two fixed blocks 317 respectively. By setting up the dust collecting mechanism 3, impurities on the collecting plate can be scraped off regularly, without the need for frequent manual cleaning, saving labor costs, improving cleaning efficiency, ensuring the cleanliness of the collecting plate, so that it can continuously and effectively collect the combination of dust and water mist.
[0043] Embodiment 3: The collecting mechanism 4 includes a hinged plate 411 hingedly arranged on the front side of the dust box 1, a storage plate 412 is fixedly connected to the inner wall of the dust box 1, a second slide groove 413 is opened on the right side of the dust box 1, a scraper 414 is slidably connected to the inner wall of the storage plate 412, and the right side of the scraper 414 extends to the outside of the second slide groove 413. By setting up the collecting mechanism 4, impurities can be easily pushed out of the storage plate and fall out from the hinged plate, which is convenient for centralized processing of the collected dust. There is no need to manually dig the dust out of the storage plate, which reduces the difficulty and workload of cleaning.
[0044] When in use, first start the fan 212 and the motor 3113. After the fan 212 is started, the air and the dust mixed in the air will be sucked into the air inlet pipe 211, and then the water pipe 219 will be opened. At this time, the water in the water pipe 219 will pass through the fixed ring 217 and the nozzle 218 on the rotating ring 213 to spray into the air inlet pipe 211. As the fan 212 brings air in and blows it into the dust collecting box 1, it will come into contact with the water. When the motor 3113 rotates, the reciprocating screw rod 319 and the bevel gear three 3110 will rotate with it. When rotating, the bevel gear four 3111 will also be rotated by the bevel gear three 3110, and then the bevel gear four 3111 will drive the fixed plate 2110 The rotating shaft 2111 on the rotating ring 211 rotates accordingly, and then the rotating shaft 2111 will rotate with the bevel gear 2112. At this time, the bevel gear 2112 will drive the two bevel gears 1 214 to rotate in the opposite direction. When the two bevel gears 1 214 rotate in the opposite direction, the two rotating rings 213 will also rotate accordingly, and then the water sprayed by the nozzle 218 and the fixed ring 217 on the rotating ring 213 will have a more comprehensive contact, and then the water mist and dust are blown by the fan 212, thereby achieving the effect of suppressing the dust spray. When the water mist and dust are combined, they will fall onto the collecting plate 312, and then pass to The rotation of the multifilament rod 319 will cause the slider 3115 on its outer wall to slide, and the slider 3115 will also move with the slide bar 316, the fixed block 317, the scraper rod 318, the telescopic rod 3116 and the spring 3117. When the slide bar 316 moves, it will slide in the slide groove 1 313, and the rear slider 3115 will also slide on the outer wall of the slide bar 2 3114. With the continuous movement, the slide bar 316 will contact the limit rod 315. At this time, the slide bar 316 will lift the limit rod 315, and then the slide bar 316 will pass through the limit rod 315. After passing, it will move upward due to the arc movement in the slide groove 1 313, and then it will fall when it slides to the left. After falling, the scraper rod 318 will contact the collecting plate 312, and then it will scrape the impurities on the collecting plate 312. With continuous scraping, the impurities will reach the right side, thereby achieving the effect of concentrating the impurities. After reaching the right side, the scraper rod 318 will scrape it into the storage plate 412. As time goes by, the storage plate 412 will be full. After it is full, the hinged plate 411 can be opened, and the scraper plate 414 can be slid after opening. At this time, the scraper plate 414 will slide on the second slide groove 413, and then the scraper plate 414 will push the impurities in the storage plate 412 to make it fall out from the hinged plate 411, thereby achieving the effect of collecting dust.
[0045] The above-mentioned implementation modes are only preferred implementation modes of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present application shall fall within the scope of protection required by the present application.
Claims
1. An intelligent dust and mist collection device for green construction sites, characterized by: The invention comprises a dust collecting box (1), wherein the dust collecting box (1) is provided with a spray mechanism (2), a dust collecting mechanism (3) and a collecting mechanism (4); the spray mechanism (2) comprises an air inlet pipe (211) connected to the left side of the dust collecting box (1), the inner wall of the air inlet pipe (211) is fixedly connected to a fan (212), the air inlet pipe (211) is provided with two rotating rings (213), the outer walls of the two rotating rings (213) are fixedly connected to a bevel gear (214), and the two rotating rings (213) are provided with two circular sliding grooves (215); the dust collecting mechanism (3) comprises a fixed rod (311) fixedly connected to the inner walls of the front and rear sides of the dust collecting box (1), and the collecting mechanism (4) comprises a hinged plate (411) hingedly arranged on the front side of the dust collecting box (1).
2. According to claim 1, the intelligent dust and mist collection device for green construction sites is characterized by: The inner walls of the plurality of circular slide grooves (215) are slidably connected to a plurality of slide rods (216); the sides of the plurality of slide rods (216) away from the rotating ring (213) are fixedly connected to the air inlet pipe (211); the inner walls of the two rotating rings (213) are rotatably connected to fixed rings (217); and the two fixed rings (217) are connected to a plurality of nozzles (218).
3. The green construction site intelligent dust and mist collection device according to claim 2 is characterized by: A water pipe (219) is connected to the two rotating rings (213), and the rear side of the water pipe (219) extends to the outside of the air inlet pipe (211). A fixed plate (2110) is fixedly connected to the right side of the dust collecting box (1), and a rotating shaft (2111) is rotatably connected to the inner wall of the fixed plate (2110). A second bevel gear (2112) is fixedly connected to the outer wall of the rotating shaft (2111), and the second bevel gear (2112) is meshed with two first bevel gears (214).
4. The green construction site intelligent dust and mist collection device according to claim 3 is characterized by: The inner wall of the dust collecting box (1) is fixedly connected with a collecting plate (312), and two sliding grooves (313) are provided on the collecting plate (312). The sides of the two fixing rods (311) close to each other are fixedly connected with a limiting plate (314).
5. The green construction site intelligent dust and mist collection device according to claim 4, characterized in that: The two limit plates (314) are both hingedly provided with limit rods (315), the limit rods (315) are in contact with the slide groove (313), the inner walls of the two slide grooves (313) are slidably connected with slide rods (316), and the outer walls of the slide rods (316) are fixedly connected with two fixed blocks (317).
6. The green construction site intelligent dust and mist collection device according to claim 5, characterized in that: The bottoms of the two fixed blocks (317) are fixedly connected with a scraper rod (318); the left side of the dust box (1) is rotatably connected with a reciprocating screw rod (319); the right side of the reciprocating screw rod (319) extends into the dust box (1); and the outer wall of the reciprocating screw rod (319) is fixedly connected with a bevel gear three (3110).
7. The green construction site intelligent dust and mist collection device according to claim 6, characterized in that: The outer wall of the rotating shaft (2111) is fixedly connected with a bevel gear four (3111), and the bevel gear four (3111) is hinged with the bevel gear three (3110). The left side of the dust collecting box (1) is fixedly connected with a motor frame (3112), and the inner wall of the motor frame (3112) is fixedly connected with a motor (3113), and the output shaft of the motor (3113) is fixedly connected with a reciprocating screw rod (319) via a coupling.
8. The green construction site intelligent dust and mist collection device according to claim 7, characterized in that: The inner wall of the dust box (1) is fixedly connected with a second slide bar (3114), the outer walls of the second slide bar (3114) and the reciprocating screw rod (319) are fixedly connected with a slider (3115), the slider (3115) located at the front side is threadedly connected to the reciprocating screw rod (319), the tops of the two fixed blocks (317) are fixedly connected with a telescopic rod (3116), the outer walls of the two telescopic rods (3116) are sleeved with springs (3117), the tops of the two springs (3117) are respectively fixedly connected to the two slide bars (3115), and the bottoms of the two springs (3117) are respectively fixedly connected to the two fixed blocks (317).
9. The green construction site intelligent dust and mist collection device according to claim 8, characterized in that: A material storage plate (412) is fixedly connected to the inner wall of the dust box (1), a second slide groove (413) is provided on the right side of the dust box (1), a scraper (414) is slidably connected to the inner wall of the material storage plate (412), and the right side of the scraper (414) extends outside the second slide groove (413).