A mobile road construction dust suppression device

Abstract

The present invention relates to the technical field of road dust reduction, and specifically to a mobile road construction dust reduction device, comprising a mobile frame, on which a dust blowing component, a dust transport component and a dust processing component are arranged, the dust blowing component comprises a plurality of groups of centrifugal fans, each group of centrifugal fans is connected with a blowing pipe, the dust transport component comprises a dust collecting hopper and a spiral feeding mechanism, the spiral feeding mechanism comprises a feeding cylinder, and a feeding pipe and a discharging pipe are respectively arranged at both ends of the feeding cylinder, the dust processing component comprises a dust reduction mechanism and a dehydration mechanism, the dust reduction mechanism comprises a dust collecting tank, a spray component and a rotary scraper component, the rotary scraper component comprises a plurality of groups of rotary scraper arms, each group of rotary scraper arms comprises a telescopic arm and a scraping strip, the dehydration mechanism comprises a sealing cylinder, a dehydration screen cylinder, a spiral extrusion shaft and an elastic pressing plate. Compared with the traditional technology which can only reduce the dust, the present device can process the static dust in a larger area, prevent the generation of dust from the source, thereby improving the dust reduction efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of road dust reduction, and in particular to a mobile road construction dust reduction device. Background Art

[0002] Dust reduction during road construction is an important measure to ensure that the construction environment meets the standards and reduce the impact on the surrounding air quality. Traditional road construction dust reduction usually uses a sprinkler truck to sprinkle water on the construction road surface to settle the dust. However, after the dust is deposited on the ground by water, the water will gradually evaporate over time, so that the originally settled dust will float again due to external forces. The existing Chinese patent with a publication number of CN117123016A discloses a highway engineering construction dust reduction device to solve the problems of the prior art, but the above patent also has the following defects:

[0003] First, after the dust falls on the ground, it will only float due to external forces to form dust, where the external forces include but are not limited to vehicle driving, wind and equipment vibration. Although a large amount of dust will be generated during road construction due to the above external forces, the area where the dust is generated is limited. Most of the dust in the construction area will stay on the ground. The above patent is only applicable to the dust area, but cannot remove the dust that is still on the ground. Therefore, the above patent has a small scope of application and low dust reduction efficiency.

[0004] Secondly, when dust is generated, the dust is scattered over a large area, while the suction head of the above patent is small in size and the suction hole diameter on the suction head is also small, so the suction force generated is small in range, and therefore dust over a large area cannot be removed;

[0005] Thirdly, when the dust is sucked into the collection chamber, the dust will be settled by water. When the dust is soaked by water, the weight of the dust increases and it will adhere to the filter element. The dust adhered to the filter element will gradually block the filter element. The above patent does not mention how to clean the filter element. Therefore, it is necessary to provide a mobile road construction dust reduction device to solve the above problem. Summary of the invention

[0006] Based on this, it is necessary to provide a mobile road construction dust reduction device to address the existing technical problems.

[0007] In order to solve the problems of the prior art, the technical scheme adopted by the present invention is as follows: a mobile road construction dust reduction device comprises a mobile frame, the mobile frame is provided with a dust blowing assembly, a dust transport assembly and a dust processing assembly which are sequentially distributed along the length direction of the mobile frame, the dust blowing assembly comprises a plurality of groups of centrifugal fans connected to the mobile frame, each group of centrifugal fans is connected with a blowing pipe extending to the ground, the dust transport assembly comprises a dust collecting hopper and a spiral feeding mechanism, the dust collecting hopper is horizontally connected to the mobile frame, the spiral feeding mechanism comprises a feeding cylinder which is vertically connected to the mobile frame, a feeding pipe and a discharging pipe are respectively provided at both ends of the feeding cylinder, the dust collecting hopper is connected to the feeding pipe, the dust processing assembly comprises a dust reduction mechanism and a dehydration mechanism, the dust reduction mechanism comprises a dust collecting tank, a spray The dust collecting tank is arranged in an inclined state above the mobile frame, the discharge pipe is connected with the dust collecting tank, a discharge pipe is provided at the bottom of the dust collecting tank, the spray component is arranged on the dust collecting tank, and the spray component is located at the top of the dust collecting tank, the scraping component includes a plurality of groups of scraping arms arranged in the dust collecting tank, each group of scraping arms includes a telescopic arm and a scraping strip connected with the telescopic arm, the dehydration mechanism includes a sealing cylinder, a dehydration screen cylinder, a spiral extrusion shaft and an elastic pressing plate, the sealing cylinder is horizontally fixed below the dust collecting tank, a drain pipe is provided on the sealing cylinder, the dehydration screen cylinder is fixed in the sealing cylinder, the discharge pipe is downwardly connected with the dehydration screen cylinder, the spiral extrusion shaft is arranged in the dehydration screen cylinder, the two ends of the dehydration screen cylinder are a closed structure and an open structure respectively, and the elastic pressing plate is pressed on the open end of the dehydration screen cylinder.

[0008] Furthermore, each group of centrifugal fans includes a volute, a wind wheel and a No. 1 motor. A plurality of support platforms corresponding to the volutes are fixedly provided on the top of the movable frame. The volute is fixed on the corresponding support platforms. The wind wheel is rotatably arranged in the volute. A support frame fixedly connected to the movable frame is provided on the side of the support platform. The No. 1 motor is fixedly connected to the support frame. The output end of the No. 1 motor penetrates into the volute and is coaxially connected to the wind wheel. An air inlet corresponding to the wind wheel is provided on one side of the volute. A vertical downward air outlet pipe is formed on the peripheral wall of the volute, and the blowing pipe is connected to the air outlet pipe.

[0009] Furthermore, each blowing pipe includes a connecting pipe No. 1, a connecting pipe No. 2 and a bent pipe. The two ends of the connecting pipe No. 1 are a rectangular opening and a cylindrical opening respectively. The rectangular opening of the connecting pipe No. 1 is upwardly connected to the air outlet pipe. The two ends of the connecting pipe No. 2 are respectively a cylindrical opening and a flat opening. The cylindrical opening of the connecting pipe No. 2 is upwardly connected to the cylindrical opening of the connecting pipe No. 1. The cross-section of the bent pipe is rectangular. The upper end of the bent pipe is vertically connected to the flat opening of the connecting pipe No. 2, and the lower end of the bent pipe is bent toward the dust collecting hopper. Vertical lateral dust shields are fixed on both sides of the mobile frame.

[0010] Furthermore, the spiral feeding mechanism also includes a spiral feeding shaft and a No. 2 motor. The spiral feeding shaft is arranged in the feeding barrel. The spiral feeding shaft includes a rotating shaft and a No. 1 spiral blade. The rotating shaft is coaxial with the feeding barrel, and the rotating shaft is rotatably connected to the feeding barrel. The No. 1 spiral blade is connected to the rotating shaft, and the No. 1 spiral blade extends spirally along the axial direction of the rotating shaft. A horizontal support plate is provided above the feeding barrel, and the support plate is connected to the moving frame through a number of support rods. The No. 2 motor is vertically fixed on the support plate, and the output end of the No. 2 motor is coaxially fixed downward with the rotating shaft.

[0011] Furthermore, a double-layer bracket is fixedly provided on the mobile frame, the upper layer of the double-layer bracket is in an inclined state, the dust collecting tank is fixed on the upper layer of the double-layer bracket, and a strip through groove located at the top of the dust collecting tank is opened on the outer wall of the dust collecting tank, and the length direction of the strip through groove is parallel to the axial direction of the dust collecting tank, and a strip cover plate covering the strip through groove is fixedly provided on the outer wall of the dust collecting tank, and the spray component includes a water pipe and a plurality of nozzles, the axial direction of the water pipe is parallel to the axial direction of the dust collecting tank, the two ends of the water pipe are respectively a closed structure and an open structure, and the water pipe is fixedly connected to the strip cover plate, and the plurality of nozzles are equidistantly distributed along the axial direction of the water pipe, each nozzle is connected to the water pipe, and each nozzle passes downward through the strip cover plate and extends into the dust collecting tank.

[0012] Furthermore, both ends of the dust collecting tank are open structures, and circular cover plates are fixed on the two open ends of the dust collecting tank, a hollow rotating tube is coaxially arranged in the dust collecting tank, and the two ends of the hollow rotating tube are respectively rotatably connected to the two circular cover plates, and several groups of rotary scraper arms are evenly distributed along the circumferential direction of the hollow rotating tube, and each group of telescopic arms includes a sleeve and a telescopic rod, the axial direction of the sleeve is consistent with the radial direction of the hollow rotating tube, and one end of the sleeve is connected to the outer wall of the hollow rotating tube, the telescopic rod slides coaxially in the sleeve, and one end of the telescopic rod is extended outward from the sleeve, each scraper strip is fixedly connected to the extended end of the telescopic rod, and the length direction of each scraper strip is parallel to the axial direction of the hollow rotating tube, and a bracket is provided on the side of each circular cover plate, and the bracket is connected to the upper layer of the double-layer bracket, and one of the brackets is fixedly provided with a No. 3 motor, and the No. 3 motor is transmission-connected to one end of the hollow rotating tube.

[0013] Furthermore, a fixing rod is coaxially provided in the hollow rotating tube, and both ends of the fixing rod are respectively fixedly connected to the two brackets through two circular cover plates, and each telescopic rod has a round head at one end facing the fixed rod, and a No. 1 convex ring close to the fixed rod is coaxially formed on the outer wall of each telescopic rod, and a No. 2 convex ring close to the scraper strip is coaxially formed in the sleeve, and a No. 1 spring is arranged outside the telescopic rod, and both ends of the No. 1 spring respectively conflict with the No. 1 convex ring and the No. 2 convex ring, and a circle of columnar bosses is formed on the outer wall of the fixed rod, and a strip groove corresponding to the spray element is opened on the columnar boss, and the length direction of the strip groove is parallel to the length direction of the fixed rod.

[0014] Furthermore, the sealing cylinder is fixed to the lower layer of the double-layer bracket, and the dewatering screen cylinder includes a cylindrical screen and a columnar frame. The cylindrical screen is coaxially arranged in the sealing cylinder, and the cylindrical frame is coaxially sleeved outside the cylindrical screen. Sealing rings are fixedly arranged at both ends of the sealing cylinder, and the two ends of the cylindrical frame are respectively fixedly connected to two sealing rings, and each sealing ring is located between the sealing cylinder and the cylindrical screen. A vertical connecting pipe is formed on the outer wall of the sealing cylinder, and the lower end of the connecting pipe is downwardly connected to the cylindrical screen, and the upper end of the connecting pipe is upwardly fixedly connected to the discharge pipe.

[0015] Furthermore, the spiral extrusion shaft includes a conical shaft and a No. 2 spiral blade, the conical shaft is coaxially arranged in the cylindrical screen, one end of the cylindrical screen is coaxially fixed with a connecting round table, the two ends of the sealing cylinder are respectively fixed with a columnar table and a No. 4 motor, the columnar table is horizontal, the two ends of the conical shaft are respectively connected to the connecting round table and the columnar table for rotation, and the large diameter end of the conical shaft is close to the columnar table, the elastic pressure plate is arranged on the columnar table, and the elastic pressure plate is pressed on the other end of the cylindrical screen, the No. 4 motor is coaxially fixed to the conical shaft, the No. 2 spiral blade is arranged on the conical shaft, and the No. 2 spiral blade extends along the axial direction of the conical shaft in a spiral manner.

[0016] Furthermore, the elastic pressure plate includes an annular pressure plate and a No. 2 spring. The annular pressure plate is coaxially sleeved on the columnar platform. A No. 3 convex ring is coaxially formed on the outer wall of the columnar platform. The No. 2 spring is sleeved on the columnar platform, and the two ends of the No. 2 spring are respectively in contact with the No. 3 convex ring and the annular pressure plate. A discharge hopper located below the annular pressure plate is fixedly provided on the lower layer of the double-layer bracket.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Firstly, the device moves on the ground through a mobile frame. During the movement of the mobile frame, the dust blowing component blows the dust on the ground to the dust transporting component, and the dust transporting component transports the dust to the dust processing component, and finally the dust is settled by the dust processing component. Compared with the traditional technology that can only settle the dust, the device can process the stationary dust in a larger area, prevent the generation of dust from the source, and thus improve the dust settlement efficiency;

[0019] Secondly, the strong wind generated by the dust blowing component of the device can blow up the dust on the ground, with a high dust removal rate. The dust blowing component is located below the mobile frame, and side dust shields are provided on both sides of the mobile frame. When the dust blowing component is working, dust will not be scattered around the mobile frame, thereby effectively preventing the generation of dust.

[0020] Thirdly, the dust processing component of the device is used to soak and dehydrate the dust respectively. After the dust is soaked, its weight increases and it is not easy to generate dust. The soaked dust is dehydrated by squeezing. The squeezing dehydration can not only remove most of the moisture in the dust, but also allow the dust to retain a part of the moisture. Finally, the dust is moist. The moist dust is not easy to float up, and no dust will be generated during the secondary treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 2 This is a three-dimensional structure diagram of the dust blowing component. Figure 1 ;

[0023] Figure 3 This is a three-dimensional structure diagram of the dust blowing component. Figure 2 ;

[0024] Figure 4 It is a three-dimensional structural diagram of the feeding barrel and the dust collecting hopper;

[0025] Figure 5 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 6 It is a three-dimensional structural schematic diagram of the dust transport component and the dust treatment component;

[0027] Figure 7 It is a top view of the feeding barrel;

[0028] Figure 8 yes Figure 7 Section view along line AA;

[0029] Fig. 9 is a top view of the dust handling assembly;

[0030] Fig.10 yes Fig. 9 Sectional view along line BB;

[0031] Fig.11 yes Fig.10 A1 is a partial enlarged schematic diagram;

[0032] Fig.12 It is a schematic diagram of the three-dimensional structure of the dust collecting tank;

[0033] Fig.13 is a top view of the rotary scraper arm;

[0034] Fig.14 yes Fig.13 Sectional view along line CC;

[0035] Fig.15 yes Fig.14 A2 is a partial enlarged schematic diagram;

[0036] Fig.16 1 is a schematic diagram of the three-dimensional structure of the fixing rod;

[0037] Fig.17 It is a three-dimensional structural schematic diagram of the sealing cylinder;

[0038] Fig.18 yes Fig.17 A3 is a partial enlarged schematic diagram;

[0039] Fig.19 It is a three-dimensional structural schematic diagram of the dewatering screen drum;

[0040] Fig. 20 It is a schematic diagram of the three-dimensional structure of the spiral extrusion shaft.

[0041] The numbers in the figure are: 1. Mobile frame; 2. Dust blowing assembly; 3. Dust transport assembly; 4. Dust collecting hopper; 5. Feeding barrel; 6. Feeding pipe; 7. Discharging pipe; 8. Dust suppression mechanism; 9. Dehydration mechanism; 10. Dust collecting tank; 11. Discharging pipe; 12. Telescopic arm; 13. Scraping strip; 14. Sealing barrel; 15. Dehydration screen barrel; 16. Screw extrusion shaft; 17. Elastic pressure plate; 18. Drain pipe; 19. Volute; 20. Wind wheel; 21. No. 1 motor; 22. Support platform; 23. Support frame; 24. Air inlet; 25. Air outlet pipe; 26. No. 1 connecting pipe; 27. No. 2 connecting pipe; 28. Bend pipe; 29. ​​Lateral dust shield; 30. Screw feeding shaft; 31. No. 2 motor; 32. Rotating shaft; 33. No. 1 Spiral blade; 34, support plate; 35, double-layer bracket; 36, strip groove; 37, strip cover plate; 38, water pipe; 39, nozzle; 40, circular cover plate; 41, hollow rotating tube; 42, sleeve; 43, telescopic rod; 44, bracket; 45, No. 3 motor; 46, fixing rod; 47, No. 1 convex ring; 48, No. 2 convex ring; 49, No. 1 spring; 50, columnar boss; 51, strip groove; 52, cylindrical screen; 53, columnar skeleton; 54, sealing ring; 55, connecting pipe; 56, conical shaft; 57, No. 2 spiral blade; 58, connecting round table; 59, columnar table; 60, No. 4 motor; 61, annular pressure plate; 62, No. 2 spring; 63, No. 3 convex ring; 64, discharge hopper. DETAILED DESCRIPTION

[0042] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] refer to Figures 1 to 20A mobile road construction dust reduction device shown in the figure comprises a mobile frame 1, on which a dust blowing assembly 2, a dust transport assembly 3 and a dust processing assembly are sequentially distributed along the length direction of the mobile frame 1. The dust blowing assembly 2 comprises a plurality of groups of centrifugal fans connected to the mobile frame 1, each group of centrifugal fans is connected to a blowing pipe extending to the ground, and the dust transport assembly 3 comprises a dust collecting hopper 4 and a spiral feeding mechanism, and the dust collecting hopper 4 is horizontally connected to the mobile frame 1 (such as Figure 5 As shown), the spiral feeding mechanism includes a feeding barrel 5 vertically connected to the mobile frame 1, and the two ends of the feeding barrel 5 are respectively provided with a feeding pipe 6 and a discharging pipe 7, and the dust collecting hopper 4 is connected to the feeding pipe 6. The dust processing assembly includes a dust reduction mechanism 8 and a dehydration mechanism 9. The dust reduction mechanism 8 includes a dust collecting tank 10, a spraying member and a rotary scraping member. The dust collecting tank 10 is in an inclined state (as shown in FIG. Fig.10 The dust collecting tank 10 is provided with a discharge pipe 11 at the bottom of the dust collecting tank 10, and the sprayer is provided on the dust collecting tank 10, and the sprayer is located at the top of the dust collecting tank 10. The rotary scraper includes a plurality of rotary scraper arms arranged in the dust collecting tank 10, each rotary scraper arm includes a telescopic arm 12 and a scraper bar 13 connected to the telescopic arm 12, and the dehydration mechanism 9 includes a sealing cylinder 14, a dehydration screen cylinder 15, a spiral extrusion shaft 16 and an elastic pressing plate 17. The sealing cylinder 14 is horizontally fixed below the dust collecting tank 10, and a drainage pipe 18 (combined with the sealing cylinder 14) is provided on the sealing cylinder 14. Figure 5 and Figure 6 ), the dewatering screen cylinder 15 is fixed in the sealing cylinder 14 (combined with Fig.18 and Fig.19 ), the discharge pipe 11 is connected to the dewatering screen cylinder 15 downward, the spiral extrusion shaft 16 is arranged in the dewatering screen cylinder 15, the two ends of the dewatering screen cylinder 15 are respectively a closed structure and an open structure, and the elastic pressure plate 17 is pressed on the open end of the dewatering screen cylinder 15.

[0044] After the moving frame 1 moves, each group of centrifugal fans will start to generate strong wind flowing along the blowing pipe. When the strong wind is discharged from the blowing pipe, the strong wind will blow the dust on the ground to the dust hopper 4. The dust entering the dust hopper 4 will fall into the feeding tube 5 through the feeding tube 6. Thereafter, the dust in the feeding tube 5 will go up in the vertical direction and enter the dust collecting tank 10 through the discharging pipe 7. When the dust enters the dust collecting tank 10, the spray part will spray water mist into the dust collecting tank 10 to settle the dust through the water mist. In this process, the dust and the water mist combine to form heavy ash residue. In the early stage of spraying, due to the small amount of water in the dust collecting tank 10, the ash residue will adhere to the inner wall of the dust collecting tank 10. In the later stage of spraying, the amount of water in the dust collecting tank 10 increases, and a plurality of groups of rotary scraping arms arranged in the dust collecting tank 10 will scrape off the ash residue attached to the inner wall of the dust collecting tank 10 by rotating. In this process, each group of telescopic arms 1 2 will drive the scraper bar 13 to rotate, and when the scraper bar 13 approaches the spray component, the telescopic arm 12 will retract to prevent the scraper bar 13 from colliding with the spray component. After the ash attached to the inner wall of the dust collecting tank 10 is scraped off, the ash will flow to the discharge pipe 11 with the water, and finally the ash and water will enter the dewatering screen cylinder 15 through the discharge pipe 11. When the ash and water enter the dewatering screen cylinder 15, the spiral extrusion shaft 16 will carry the ash and water for horizontal displacement. In this process, the water will pass through the dewatering screen cylinder 15 and fall into the sealing cylinder 14. The water falling into the sealing cylinder 14 will be discharged to the outside of the sealing cylinder 14 through the drain pipe 18. With the continuous rotation of the spiral extrusion shaft 16, the ash will gradually approach the open end of the dewatering screen cylinder 15. At this time, the water in the ash will be squeezed out by the extrusion of the elastic pressure plate 17, so as to realize the dehydration of the ash, and the dehydrated ash will eventually be discharged from the open end of the dewatering screen cylinder 15.

[0045] In order to show the specific structure of the centrifugal fan, the following features are set:

[0046] Each group of centrifugal fans includes a volute 19, a wind wheel 20 and a No. 1 motor 21. A plurality of support platforms 22 corresponding to the volute 19 are fixedly provided on the top of the mobile frame 1. The volute 19 is fixed on the corresponding support platform 22. The wind wheel 20 is rotatably arranged in the volute 19. A support frame 23 fixedly connected to the mobile frame 1 is provided on the side of the support platform 22. The No. 1 motor 21 is fixedly connected to the support frame 23. The output end of the No. 1 motor 21 penetrates into the volute 19 and is coaxially connected to the wind wheel 20. An air inlet 24 corresponding to the wind wheel 20 is opened on one side of the volute 19. A vertically downward air outlet pipe 25 is formed on the peripheral wall of the volute 19, and the blowing pipe is connected to the air outlet pipe 25.

[0047] When motor No. 1 21 is started, motor No. 1 21 will drive the wind wheel 20 to rotate at high speed. The high-speed rotating wind wheel 20 will draw the outside air into the volute 19 through the air inlet 24. The gas entering the volute 19 will be thrown toward the inner wall of the volute 19 by the wind wheel 20. Thereafter, the gas will follow the inner wall of the volute 19 through the air outlet pipe 25 into the blowing pipe, and finally the gas will be discharged to the dust collecting hopper 4 through the blowing pipe.

[0048] In order to show the specific structure of the blowpipe, the following features are set:

[0049] Each blowing pipe includes a connecting pipe No. 1 26, a connecting pipe No. 2 27 and a bent pipe 28. The two ends of the connecting pipe No. 1 26 are respectively a rectangular opening and a cylindrical opening. The rectangular opening of the connecting pipe No. 1 26 is upwardly connected to the air outlet pipe 25. The two ends of the connecting pipe No. 2 27 are respectively a cylindrical opening and a flat opening. The cylindrical opening of the connecting pipe No. 2 27 is upwardly connected to the cylindrical opening of the connecting pipe No. 1 26. The cross-section of the bent pipe 28 is rectangular. The upper end of the bent pipe 28 is vertically connected to the flat opening of the connecting pipe No. 2 27. The lower end of the bent pipe 28 is bent toward the dust collecting hopper 4. Vertical lateral dust shields 29 are fixed on both sides of the mobile frame 1.

[0050] When the gas in the volute 19 is discharged through the outlet pipe 25, the gas will pass through the No. 1 connecting pipe 26 and the No. 2 connecting pipe 27 in sequence, and finally be discharged through the bent pipe 28. Since the bent pipe 28 is bent toward the dust collecting hopper 4, the gas discharged from the bent pipe 28 will carry the dust on the ground into the dust collecting hopper 4. In this process, the lateral dust shields 29 arranged on both sides of the mobile frame 1 are used to prevent the dust blown by the gas from escaping from both sides of the mobile frame 1.

[0051] In order to show the specific structure of the spiral feeding mechanism, the following features are set:

[0052] The screw feeding mechanism also includes a screw feeding shaft 30 and a No. 2 motor 31. The screw feeding shaft 30 is arranged in the feeding barrel 5. The screw feeding shaft 30 includes a rotating shaft 32 and a No. 1 spiral blade 33. The rotating shaft 32 is coaxial with the feeding barrel 5, and the rotating shaft 32 is rotatably connected to the feeding barrel 5. The No. 1 spiral blade 33 is connected to the rotating shaft 32, and the No. 1 spiral blade 33 extends in an axial spiral along the rotating shaft 32. A horizontal support plate 34 is provided above the feeding barrel 5, and the support plate 34 is connected to the moving frame 1 through a plurality of support rods. The No. 2 motor 31 is vertically fixed on the support plate 34, and the output end of the No. 2 motor 31 is coaxially fixed downward with the rotating shaft 32.

[0053] When the dust is blown into the dust collecting hopper 4 by the strong wind in the blowing pipe, the dust will flow along the dust collecting hopper 4 and enter the feeding barrel 5 through the feeding pipe 6. When the dust enters the feeding barrel 5, the No. 2 motor 31 is started, and the No. 2 motor 31 will drive the No. 1 spiral blade 33 to rotate through the rotating shaft 32, so that the No. 1 spiral blade 33 will drive the dust in the feeding barrel 5 to move upward. When the dust moves from the lower end of the feeding barrel 5 to the upper end of the feeding barrel 5, the dust will enter the dust collecting tank 10 through the discharge pipe 7.

[0054] In order to show the specific structure of the spray part, the following features are set:

[0055] A double-layer bracket 35 is fixedly provided on the moving frame 1, and the upper layer of the double-layer bracket 35 is in an inclined state (such as Fig.10 The dust collecting tank 10 is fixed to the upper layer of the double-layer bracket 35, and a strip-shaped through groove 36 (as shown in FIG. 1 ) is provided on the outer wall of the dust collecting tank 10 and is located at the top of the dust collecting tank 10. Fig.12 As shown in the figure, the length direction of the strip through groove 36 is parallel to the axial direction of the dust collecting tank 10, and a strip cover plate 37 covering the strip through groove 36 is fixedly provided on the outer wall of the dust collecting tank 10, and the spray member includes a water pipe 38 and a plurality of nozzles 39, the axial direction of the water pipe 38 is parallel to the axial direction of the dust collecting tank 10, the two ends of the water pipe 38 are a closed structure and an open structure respectively, and the water pipe 38 is fixedly connected to the strip cover plate 37, and the plurality of nozzles 39 are equidistantly distributed along the axial direction of the water pipe 38, each nozzle 39 is connected to the water pipe 38, and each nozzle 39 passes downward through the strip cover plate 37 and extends into the dust collecting tank 10.

[0056] In actual use, a water tank (not shown in the figure) and a lifting pump (not shown in the figure) are installed on the mobile frame 1. The water in the water tank is pumped into the water pipe 38 through the lifting pump. The water entering the water pipe 38 will eventually be sprayed downward into the dust collecting tank 10 in the form of mist through a plurality of nozzles 39.

[0057] In order to show the specific structure of the telescopic arm 12, the following features are set:

[0058] Both ends of the dust collecting tank 10 are open structures, and circular cover plates 40 are fixedly provided on the two open ends of the dust collecting tank 10. A hollow rotating tube 41 is coaxially provided in the dust collecting tank 10. The two ends of the hollow rotating tube 41 are respectively rotatably connected to the two circular cover plates 40. A plurality of groups of rotary scraping arms are evenly distributed along the circumferential direction of the hollow rotating tube 41. Each group of telescopic arms 12 includes a sleeve 42 and a telescopic rod 43. The axial direction of the sleeve 42 is consistent with the radial direction of the hollow rotating tube 41, and one end of the sleeve 42 is connected to the hollow rotating tube 41. The outer wall of the hollow rotating tube 41 is connected, the telescopic rod 43 slides coaxially in the sleeve 42, one end of the telescopic rod 43 is extended outward from the sleeve 42, each scraper 13 is fixedly connected to the extended end of the telescopic rod 43, the length direction of each scraper 13 is parallel to the axial direction of the hollow rotating tube 41, and a bracket 44 is provided on the side of each circular cover plate 40, and the bracket 44 is connected to the upper layer of the double-layer bracket 35, and a No. 3 motor 45 is fixedly provided on one of the brackets 44, and the No. 3 motor 45 is transmission-connected to one end of the hollow rotating tube 41.

[0059] When the No. 3 motor 45 is started, the No. 3 motor 45 will drive the entire hollow rotating tube 41 to rotate. When the hollow rotating tube 41 rotates, the hollow rotating tube 41 will drive several sleeves 42 to rotate, and the sleeves 42 will drive the corresponding telescopic rods 43 to rotate. Finally, the telescopic rods 43 will drive the corresponding scraper 13 to scrape off the ash attached to the inner wall of the dust collecting tank 10.

[0060] In order to show how the telescopic rod 43 is extended and retracted, the following features are provided:

[0061] A fixing rod 46 is coaxially disposed in the hollow rotating tube 41. The two ends of the fixing rod 46 pass through the two circular cover plates 40 and are fixedly connected to the two brackets 44. The end of each telescopic rod 43 facing the fixing rod 46 is rounded (such as Fig.14 As shown in the figure, a first convex ring 47 close to the fixed rod 46 is coaxially formed on the outer wall of each telescopic rod 43, a second convex ring 48 close to the scraper strip 13 is coaxially formed in the sleeve 42, a first spring 49 is provided on the outer sleeve of the telescopic rod 43, and the two ends of the first spring 49 are respectively in conflict with the first convex ring 47 and the second convex ring 48, and a circle of columnar bosses 50 (as shown in the figure) is formed on the outer wall of the fixed rod 46 Fig.16 As shown), a strip groove 51 corresponding to the spray element is opened on the columnar boss 50, and the length direction of the strip groove 51 is parallel to the length direction of the fixing rod 46.

[0062] In the initial state, the first spring 49 contacts the first convex ring 47 through elastic force, so that the telescopic rod 43 slides toward the fixed rod 46, and finally the round head end on the telescopic rod 43 contacts the columnar boss 50. When the hollow rotating tube 41 rotates, each telescopic rod 43 rotates around the fixed rod 46. During this process, the round head end on each telescopic rod 43 slides on the surface of the columnar boss 50. When the telescopic rod 43 rotates around the fixed rod 46 to the bottom of the spray part, the telescopic rod 43 The rounded end of the telescopic rod 43 will extend downward into the strip groove 51, and the telescopic rod 43 will further retract, so that the scraping strip 13 is separated from the inner wall of the dust collecting tank 10, and finally ensure that the scraping strip 13 will not collide with the plurality of nozzles 39 in the spraying member. When the telescopic rod 43 rotates around the fixed rod 46 to the side of the spraying member, the rounded end of the telescopic rod 43 will slide from the strip groove 51 to the outer surface of the columnar boss 50 again, so that the telescopic rod 43 will drive the scraping strip 13 to extend to the inner wall of the dust collecting tank 10 again.

[0063] In order to show the specific structure of the dewatering screen drum 15, the following features are set:

[0064] The sealing cylinder 14 is fixed to the lower layer of the double-layer bracket 35. The dewatering screen cylinder 15 includes a cylindrical screen 52 and a columnar frame 53 (such as Fig.19 As shown in FIG. 1 , a cylindrical screen 52 is coaxially arranged in the sealing cylinder 14, a cylindrical frame 53 is coaxially sleeved outside the cylindrical screen 52, sealing rings 54 are fixedly arranged in both ends of the sealing cylinder 14, and both ends of the cylindrical frame 53 are respectively fixedly connected to two sealing rings 54, and each sealing ring 54 is located between the sealing cylinder 14 and the cylindrical screen 52, and a vertical connecting pipe 55 (as shown in FIG. 1 ) is formed on the outer wall of the sealing cylinder 14. Fig.17 As shown), the lower end of the connecting pipe 55 is downwardly connected to the cylindrical screen 52, and the upper end of the connecting pipe 55 is upwardly fixedly connected to the discharge pipe 11.

[0065] When the ash in the dust collecting tank 10 is discharged through the discharge pipe 11, the ash will fall into the cylindrical screen 52 through the connecting pipe 55. After the ash falls into the cylindrical screen 52, the water in the ash will pass through the cylindrical screen 52 and directly fall into the sealing cylinder 14. Finally, the water falling into the sealing cylinder 14 will be discharged to the outside of the sealing cylinder 14 through the drain pipe 18. When installing the dewatering screen cylinder 15, the columnar frame 53 and the cylindrical screen 52 are laterally inserted into the sealing cylinder 14. During this process, the columnar frame 53 and the cylindrical screen 52 will pass through two sealing rings 54 in turn, and finally the sealing ring 54 is fixedly connected to the corresponding columnar frame 53. The sealing ring 54 not only connects the columnar frame 53 to the sealing cylinder 14, but also blocks the annular cavity between the cylindrical screen 52 and the sealing cylinder 14, so as to prevent the water in the sealing cylinder 14 from being discharged from both ends of the sealing cylinder 14.

[0066] In order to show the specific structure of the spiral extrusion shaft 16, the following features are set:

[0067] The spiral extrusion shaft 16 includes a tapered shaft 56 and a second spiral blade 57 (such as Fig. 20 As shown), the conical shaft 56 is coaxially arranged in the cylindrical screen 52, one end of the cylindrical screen 52 is coaxially fixed with a connecting round table 58, both ends of the sealing cylinder 14 are respectively fixed with a columnar table 59 and a No. 4 motor 60, the columnar table 59 is horizontal, the two ends of the conical shaft 56 are respectively connected to the connecting round table 58 and the columnar table 59 for rotation, and the large diameter end of the conical shaft 56 is close to the columnar table 59, and the elastic pressure plate 17 is arranged on the columnar table 59 (as shown in FIG. Fig.18 As shown), the elastic pressure plate 17 is pressed on the other end of the cylindrical screen 52, the fourth motor 60 is coaxially fixed to the conical shaft 56, the second spiral leaf 57 is arranged on the conical shaft 56, and the second spiral leaf 57 extends in the axial direction of the conical shaft 56.

[0068] When the No. 4 motor 60 is started, the No. 4 motor 60 will drive the conical shaft 56 to rotate, and the conical shaft 56 will drive the No. 2 spiral blade 57 to rotate. When the No. 2 spiral blade 57 rotates, the ash falling into the cylindrical screen 52 will be driven by the No. 2 spiral blade 57 to move horizontally. In this process, the ash will gradually move from the small diameter end of the conical shaft 56 to the large diameter end of the conical shaft 56, and along the axial direction of the conical shaft 56, the volume of the cavity between the conical shaft 56 and the cylindrical screen 52 will gradually shrink, so that the ash will gradually be squeezed out of water by the conical shaft 56 during the translation process, thereby improving the dehydration efficiency of the ash, and the dehydrated ash will eventually be discharged from between the cylindrical screen 52 and the elastic pressure plate 17.

[0069] In order to show the specific structure of the elastic pressure plate 17, the following features are set:

[0070] The elastic pressure plate 17 includes an annular pressure plate 61 and a No. 2 spring 62. The annular pressure plate 61 is coaxially sleeved on the columnar platform 59. A No. 3 convex ring 63 is coaxially formed on the outer wall of the columnar platform 59. The No. 2 spring 62 is sleeved on the columnar platform 59, and the two ends of the No. 2 spring 62 are respectively in contact with the No. 3 convex ring 63 and the annular pressure plate 61. A discharge hopper 64 located below the annular pressure plate 61 is fixed on the lower layer of the double-layer bracket 35.

[0071] In the initial state, the No. 2 spring 62 will release its elastic force to drive the annular pressure plate 61 to press toward one end of the cylindrical screen 52. When the ash passes through the large diameter end of the conical shaft 56, the ash will first be squeezed and dehydrated once, and the dehydrated ash will be continuously pressed toward the annular pressure plate 61 by the ash that subsequently falls into the cylindrical screen 52. Then, as the ash is continuously squeezed, the annular pressure plate 61 will be pressed away from the cylindrical screen 52. At the same time, the annular pressure plate 61 will squeeze the ash for a second time, and the ash that has been dehydrated for the second time will fall out from between the annular pressure plate 61 and the cylindrical screen 52, and the fallen ash will eventually fall into the discharge hopper 64 and be discharged through the discharge hopper 64.

[0072] Working principle:

[0073] After the moving frame 1 moves, each group of centrifugal fans will start to generate strong wind flowing along the blowing pipe. When the strong wind is discharged from the blowing pipe, the strong wind will blow the dust on the ground to the dust hopper 4. The dust entering the dust hopper 4 will fall into the feeding tube 5 through the feeding tube 6. Thereafter, the dust in the feeding tube 5 will go up in the vertical direction and enter the dust collecting tank 10 through the discharging pipe 7. When the dust enters the dust collecting tank 10, the spray part will spray water mist into the dust collecting tank 10 to settle the dust through the water mist. In this process, the dust and the water mist combine to form heavy ash residue. In the early stage of spraying, due to the small amount of water in the dust collecting tank 10, the ash residue will adhere to the inner wall of the dust collecting tank 10. In the later stage of spraying, the amount of water in the dust collecting tank 10 increases, and a plurality of groups of rotary scraping arms arranged in the dust collecting tank 10 will scrape off the ash residue attached to the inner wall of the dust collecting tank 10 by rotating. In this process, each group of telescopic arms 1 2 will drive the scraper bar 13 to rotate, and when the scraper bar 13 approaches the spray component, the telescopic arm 12 will retract to prevent the scraper bar 13 from colliding with the spray component. After the ash attached to the inner wall of the dust collecting tank 10 is scraped off, the ash will flow to the discharge pipe 11 with the water, and finally the ash and water will enter the dewatering screen cylinder 15 through the discharge pipe 11. When the ash and water enter the dewatering screen cylinder 15, the spiral extrusion shaft 16 will carry the ash and water for horizontal displacement. In this process, the water will pass through the dewatering screen cylinder 15 and fall into the sealing cylinder 14. The water falling into the sealing cylinder 14 will be discharged to the outside of the sealing cylinder 14 through the drain pipe 18. With the continuous rotation of the spiral extrusion shaft 16, the ash will gradually approach the open end of the dewatering screen cylinder 15. At this time, the water in the ash will be squeezed out by the extrusion of the elastic pressure plate 17, so as to realize the dehydration of the ash, and the dehydrated ash will eventually be discharged from the open end of the dewatering screen cylinder 15.

[0074] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A mobile road construction dust suppression device, characterized in that: The mobile frame (1) is provided with a dust blowing assembly (2), a dust transport assembly (3) and a dust processing assembly which are sequentially distributed along the length direction of the mobile frame (1); the dust blowing assembly (2) comprises a plurality of groups of centrifugal fans connected to the mobile frame (1); each group of centrifugal fans is connected to a blowing pipe extending toward the ground; the dust transport assembly (3) comprises a dust collecting hopper (4) and a spiral feeding mechanism; the dust collecting hopper (4) is horizontally connected to the mobile frame (1); the spiral feeding mechanism The material mechanism comprises a feeding cylinder (5) vertically connected to the moving frame (1), a feeding pipe (6) and a discharging pipe (7) are respectively arranged at both ends of the feeding cylinder (5), a dust collecting hopper (4) is connected to the feeding pipe (6), a dust processing assembly comprises a dust reduction mechanism (8) and a dehydration mechanism (9), the dust reduction mechanism (8) comprises a dust collecting tank (10), a spraying member and a rotary scraping member, the dust collecting tank (10) is erected above the moving frame (1) in an inclined state, the discharging pipe (7) and the dust collecting tank ( The dust collecting tank (10) is connected to the dust collecting tank (10), a discharge pipe (11) is provided at the bottom of the dust collecting tank (10), a spraying element is provided on the dust collecting tank (10), and the spraying element is located at the top of the dust collecting tank (10), the rotary scraping element comprises a plurality of rotary scraping arms arranged in the dust collecting tank (10), each rotary scraping arm comprises a telescopic arm (12) and a scraping strip (13) connected to the telescopic arm (12), and the dehydration mechanism (9) comprises a sealing cylinder (14), a dehydration screen cylinder (15), a spiral extrusion shaft (16) and an elastic pressing plate ( 17), the sealing cylinder (14) is horizontally fixed below the dust collecting tank (10), a drainage pipe (18) is provided on the sealing cylinder (14), a dewatering screen cylinder (15) is fixed in the sealing cylinder (14), a discharge pipe (11) is downwardly connected to the dewatering screen cylinder (15), a spiral extrusion shaft (16) is arranged in the dewatering screen cylinder (15), two ends of the dewatering screen cylinder (15) are respectively a closed structure and an open structure, and an elastic pressing plate (17) is pressed on the open end of the dewatering screen cylinder (15).

2. A mobile road construction dust suppression device according to claim 1, characterized in that: Each group of centrifugal fans comprises a volute (19), a wind wheel (20) and a first motor (21). A plurality of support platforms (22) corresponding to the volute (19) are fixedly provided on the top of the mobile frame (1). The volute (19) is fixed on the corresponding support platforms (22). The wind wheel (20) is rotatably arranged in the volute (19). A support frame (23) fixedly connected to the mobile frame (1) is provided on the side of the support platform (22). The first motor (21) is fixedly connected to the support frame (23). The output end of the first motor (21) penetrates into the volute (19) and is coaxially connected to the wind wheel (20). An air inlet (24) corresponding to the wind wheel (20) is provided on one side of the volute (19). A vertical downward air outlet pipe (25) is formed on the peripheral wall of the volute (19). The air blowing pipe is connected to the air outlet pipe (25).

3. A mobile road construction dust suppression device according to claim 1, characterized in that: Each blowing pipe comprises a No. 1 connecting pipe (26), a No. 2 connecting pipe (27) and a bent pipe (28); the two ends of the No. 1 connecting pipe (26) are respectively a rectangular opening and a cylindrical opening; the rectangular opening of the No. 1 connecting pipe (26) is upwardly connected to the air outlet pipe (25); the two ends of the No. 2 connecting pipe (27) are respectively a cylindrical opening and a flat opening; the cylindrical opening of the No. 2 connecting pipe (27) is upwardly connected to the cylindrical opening of the No. 1 connecting pipe (26); the cross section of the bent pipe (28) is rectangular; the upper end of the bent pipe (28) is vertically connected to the flat opening of the No. 2 connecting pipe (27); the lower end of the bent pipe (28) is bent toward the dust collecting hopper (4); and vertical lateral dust shields (29) are fixedly provided on both sides of the mobile frame (1).

4. A mobile road construction dust suppression device according to claim 1, characterized in that: The screw feeding mechanism also includes a screw feeding shaft (30) and a second motor (31). The screw feeding shaft (30) is arranged in the feeding barrel (5). The screw feeding shaft (30) includes a rotating shaft (32) and a first spiral blade (33). The rotating shaft (32) is coaxial with the feeding barrel (5), and the rotating shaft (32) is rotatably connected to the feeding barrel (5). The first spiral blade (33) is connected to the rotating shaft (32), and the first spiral blade (33) extends in a spiral along the axial direction of the rotating shaft (32). A horizontal support plate (34) is provided above the feeding barrel (5), and the support plate (34) is connected to the moving frame (1) through a plurality of support rods. The second motor (31) is vertically fixed on the support plate (34), and the output end of the second motor (31) is coaxially fixed downward with the rotating shaft (32).

5. A mobile road construction dust suppression device according to claim 1, characterized in that: A double-layer bracket (35) is fixedly provided on the mobile frame (1), the upper layer of the double-layer bracket (35) is in an inclined state, the dust collecting tank (10) is fixed on the upper layer of the double-layer bracket (35), a strip-shaped through groove (36) located at the top of the dust collecting tank (10) is opened on the outer wall of the dust collecting tank (10), the length direction of the strip-shaped through groove (36) is parallel to the axial direction of the dust collecting tank (10), a strip-shaped cover plate (37) covering the strip-shaped through groove (36) is fixedly provided on the outer wall of the dust collecting tank (10), and the spraying member comprises A water pipe (38) and a plurality of nozzles (39), the axial direction of the water pipe (38) is parallel to the axial direction of the dust collecting tank (10), the two ends of the water pipe (38) are respectively a closed structure and an open structure, and the water pipe (38) is fixedly connected to the strip cover plate (37), and the plurality of nozzles (39) are equidistantly distributed along the axial direction of the water pipe (38), each nozzle (39) is connected to the water pipe (38), and each nozzle (39) passes downward through the strip cover plate (37) and extends into the dust collecting tank (10).

6. A mobile road construction dust suppression device according to claim 5, characterized in that: Both ends of the dust collecting tank (10) are open structures, and circular cover plates (40) are fixedly provided on the two open ends of the dust collecting tank (10). A hollow rotating tube (41) is coaxially provided in the dust collecting tank (10), and the two ends of the hollow rotating tube (41) are respectively rotatably connected to the two circular cover plates (40). A plurality of groups of rotary scraping arms are evenly distributed along the circumferential direction of the hollow rotating tube (41), and each group of telescopic arms (12) includes a sleeve (42) and a telescopic rod (43). The axial direction of the sleeve (42) is consistent with the radial direction of the hollow rotating tube (41), and one end of the sleeve (42) is connected to the radial direction of the hollow rotating tube (41). The outer wall is connected, the telescopic rod (43) coaxially slides in the sleeve (42), one end of the telescopic rod (43) is extended outward from the sleeve (42), each scraper (13) is fixedly connected to the extended end of the telescopic rod (43), the length direction of each scraper (13) is parallel to the axial direction of the hollow rotating tube (41), and a bracket (44) is provided on the side of each circular cover plate (40), and the bracket (44) is connected to the upper layer of the double-layer bracket (35), and a third motor (45) is fixedly provided on one of the brackets (44), and the third motor (45) is drivingly connected to one end of the hollow rotating tube (41).

7. A mobile road construction dust suppression device according to claim 6, characterized in that: A fixing rod (46) is coaxially arranged in the hollow rotating tube (41), and two ends of the fixing rod (46) respectively pass through two circular cover plates (40) and are fixedly connected to two brackets (44). One end of each telescopic rod (43) facing the fixing rod (46) is round-headed. A No. 1 convex ring (47) close to the fixing rod (46) is coaxially formed on the outer wall of each telescopic rod (43), and a No. 2 convex ring (48) close to the scraper (13) is coaxially formed in the sleeve (42). A No. 1 spring (49) is arranged on the outer sleeve of the telescopic rod (43), and two ends of the No. 1 spring (49) respectively contact the No. 1 convex ring (47) and the No. 2 convex ring (48). A circle of columnar bosses (50) is formed on the outer wall of the fixing rod (46), and a strip groove (51) corresponding to the spray element is opened on the columnar boss (50), and the length direction of the strip groove (51) is parallel to the length direction of the fixing rod (46).

8. The mobile road construction dust suppression device according to claim 5, characterized in that: The sealing cylinder (14) is fixed to the lower layer of the double-layer bracket (35). The dewatering screen cylinder (15) comprises a cylindrical screen (52) and a columnar frame (53). The cylindrical screen (52) is coaxially arranged in the sealing cylinder (14). The columnar frame (53) is coaxially sleeved outside the cylindrical screen (52). Sealing rings (54) are fixedly arranged in both ends of the sealing cylinder (14). Both ends of the columnar frame (53) are fixedly connected to two sealing rings (54), and each sealing ring (54) is located between the sealing cylinder (14) and the cylindrical screen (52). A vertical connecting pipe (55) is formed on the outer wall of the sealing cylinder (14). The lower end of the connecting pipe (55) is downwardly connected to the cylindrical screen (52), and the upper end of the connecting pipe (55) is upwardly fixedly connected to the discharge pipe (11).

9. A mobile road construction dust suppression device according to claim 8, characterized in that: The spiral extrusion shaft (16) comprises a conical shaft (56) and a second spiral blade (57). The conical shaft (56) is coaxially arranged in the cylindrical screen (52). A connecting truncated platform (58) is coaxially fixedly arranged at one end of the cylindrical screen (52). A columnar platform (59) and a fourth motor (60) are respectively fixedly arranged at both ends of the sealing cylinder (14). The columnar platform (59) is horizontal. The two ends of the conical shaft (56) are respectively connected to the connecting truncated platform (58) and the columnar platform (60). The cylindrical table (59) is rotatably connected, and the large diameter end of the conical shaft (56) is close to the columnar table (59), the elastic pressure plate (17) is arranged on the columnar table (59), and the elastic pressure plate (17) is pressed on the other end of the cylindrical screen (52), the fourth motor (60) is coaxially fixedly connected with the conical shaft (56), the second spiral leaf (57) is arranged on the conical shaft (56), and the second spiral leaf (57) extends in an axial spiral direction of the conical shaft (56).

10. A mobile road construction dust suppression device according to claim 9, characterized in that: The elastic pressure plate (17) includes an annular pressure plate (61) and a No. 2 spring (62). The annular pressure plate (61) is coaxially sleeved on the columnar platform (59). A No. 3 convex ring (63) is coaxially formed on the outer wall of the columnar platform (59). The No. 2 spring (62) is sleeved on the columnar platform (59), and the two ends of the No. 2 spring (62) are respectively in contact with the No. 3 convex ring (63) and the annular pressure plate (61). A discharge hopper (64) located below the annular pressure plate (61) is fixedly provided on the lower layer of the double-layer bracket (35).

Images