A construction solid waste processing device

Abstract

The application discloses a kind of building solid waste treatment devices, including shell, the top of shell one end is equipped with feed inlet, the inside of shell is equipped with screen, the top of shell is equipped with driving device for driving screen to vibrate up and down;The bottom of screen is slidably fitted with jacking mechanism, the two ends of jacking mechanism are drivingly connected with driving mechanism, and the bottom of the two ends of screen is fixedly connected with toothed plate along center symmetry.Use when, when screen appears to be blocked by vertical bar-shaped waste, by the downward movement of toothed plate and the cooperation of driving mechanism, drive jacking mechanism to screen, and by jacking post, the waste jammed in screen is ejected, so as to achieve the effect of dredging screen, by the setting of first gear, movable plate and two-way screw rod, when toothed plate moves upward, by second gear and first gear, two-way screw rod is rotated, so that connecting block moves in a direction for a certain distance, so that jacking mechanism continues to dredge the following screen holes on screen.

Description

Technical Field

[0001] This invention relates to the field of construction solid waste treatment technology, specifically a construction solid waste treatment device. Background Technology

[0002] Construction solid waste refers to various types of waste generated during the construction, renovation, expansion, and demolition of various buildings, structures, pipelines, transportation facilities, and home renovation projects. With the advancement of green development, the utilization efficiency of construction solid waste is becoming increasingly higher. In the process of treating construction solid waste, various equipment is required, including screening equipment to screen the crushed construction solid waste for better subsequent recycling processes and to achieve resource recycling. In the current technology, crushers are often used to crush construction solid waste, but they cannot separate the crushed construction solid waste. Therefore, subsequent separation of construction solid waste is required.

[0003] Chinese Patent Publication No. CN112675965A discloses a construction waste treatment device for construction engineering, including a shell, a feeding hopper at the top of the shell, a crushing mechanism for crushing construction waste inside the shell, a water spraying mechanism for settling dust inside the shell on one side, and a separation mechanism inside the shell that is shaken vertically by the crushing mechanism.

[0004] The aforementioned equipment uses a separation mechanism to perform real-time separation and screening of construction solid waste pulverized by the crushing mechanism. However, in actual use, construction solid waste mainly consists of concrete blocks or bricks, and concrete blocks generally contain reinforcing bars. Due to the high strength and small size of the reinforcing bars, concrete blocks easily adhere to the reinforcing bars during crushing. Furthermore, since the reinforcing bars are vertical, although existing technologies include a metal separator between the separation and crushing mechanisms, the large crushing volume of the crushing mechanism means that some reinforcing bars may be buried in the crushed construction waste. In addition, some reinforcing bars may be stuck with concrete blocks, making them difficult to remove by the metal separator. Therefore, when the construction solid waste is screened in the separation mechanism, the reinforcing bars may be vertically inserted into the screen holes, becoming stuck. If this is not addressed, it may affect the screening process or even damage the screen.

[0005] Therefore, it is necessary to provide a construction solid waste treatment device to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a construction solid waste treatment device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a construction solid waste treatment device, comprising a shell, an inlet at one top end of the shell, a screen inside the shell, and a driving device at the top of the shell for driving the screen to vibrate up and down; a lifting mechanism is slidably fitted at the bottom of the screen, and a driving mechanism is driven to both ends of the lifting mechanism; toothed plates are fixedly connected symmetrically along the center at the bottom ends of the screen, and the toothed plates are driven to cooperate with the driving mechanism. When the toothed plates move downward, the driving mechanism drives the lifting mechanism to move relative to the screen.

[0008] As a further aspect of the present invention: the lifting mechanism includes a top plate; a top column is arranged in a central array on the top plate, and connecting blocks are fixedly arranged at both ends of the top plate. The side of the connecting block away from the top plate is provided with a tooth groove that meshes with the driving mechanism, and the two sides of the connecting block are also slidably connected to the driving mechanism. When the driving mechanism rotates, the connecting block can move up and down under the sliding limit of the driving mechanism through the tooth groove.

[0009] As a further embodiment of the present invention: the top plate is arranged parallel to the screen and is located at the bottom of the screen, and multiple sets of the top columns are arranged in one-to-one correspondence with a row of screen holes on the screen, and the top columns and the screen holes on the screen are slidably adapted to each other.

[0010] As a further aspect of the present invention: the top plate is fixedly connected to two sides with buckle plates corresponding to the top posts. The buckle plates are hollow structures. The top ends of the two sides of the buckle plates are slidably connected to extrusion plates. The bottom of the extrusion plates is slidably fitted with piston plates. The bottom of the piston plates is fixedly connected to a first spring. The piston plates and the first spring are slidably embedded in the buckle plates. The top posts are slidably connected to the top plate. A round tube is fixedly installed between the bottom of the top plate and the buckle plates. The round tube is sleeved around the outside of the top plate, and the inner wall of the round tube is slidably fitted to the bottom outer wall of the top plate. The buckle plates and the round tube are connected.

[0011] As a further aspect of the present invention: a storage tube is provided on the top periphery of the top column, an arc-shaped plate is slidably connected inside the storage tube, the bottom of the storage tube is slidably connected to the top inner wall of the top plate through a fixing plate, a pull rope is fixedly provided between the bottom of the fixing plate and the extrusion plate, the pull rope slides through the side walls of the top plate and the buckle plate, and the fixing plate and the inner wall of the top plate are elastically connected.

[0012] As a further aspect of the present invention: the driving mechanism includes a rotating shaft; both ends of the rotating shaft are rotatably connected to the inner wall of the housing, and the two ends of the rotating shaft are provided with second gears that mesh with the toothed plates. The center of the rotating shaft is provided with a third gear that meshes with the toothed groove. Sliding grooves are symmetrically embedded along the upper axial direction of the rotating shaft. The third gear slides with the sliding grooves through protrusions. Collars are rotatably connected to both sides of the third gear. A limiting plate is fixedly connected to the end of the collar away from the rotating shaft. The limiting plate is slidably connected to the connecting block. The collar is sleeved around the outer periphery of the rotating shaft.

[0013] As a further aspect of the present invention: trapezoidal blocks are fixedly connected to both ends of the rotating shaft, and a wedge plate that slides with the trapezoidal blocks is rotatably provided on the inner wall of the second gear. The side of the wedge plate away from the rotating shaft is elastically connected to the inner wall of the second gear. The wedge plate slides with the trapezoidal blocks. When the tooth plate moves, the tooth plate cannot drive the rotating shaft to rotate through the second gear. When the tooth plate moves downward, the rotating shaft is driven to rotate through the second gear.

[0014] As a further aspect of the present invention: "L" grooves are formed on both sides of the inner wall of the housing corresponding to the positions of the toothed plate and the second gear. A movable plate is elastically connected to the "L" groove via an elastic column. A first gear is rotatably connected to the movable plate. The first gear meshes with the second gear on the side away from the toothed plate. A bidirectional lead screw is driven to the side of the first gear away from the movable plate. A sleeve is rotatably connected to the bidirectional lead screw. The sleeve is slidably embedded in the inner wall of the connecting block. A vertical groove is formed on the side wall of the movable plate corresponding to the toothed plate. A slider is elastically connected to the vertical groove via a second spring. The slider slides against the toothed plate.

[0015] As a further embodiment of the present invention: the two ends of the bidirectional lead screw are fixedly connected to the first gear through movable telescopic columns, the bottom of the "L" groove is provided with an upwardly protruding triangular plate, and the inclined surface of the triangular plate faces the movable plate, the bottom of the slider is provided with an inclined surface facing the triangular plate, and the triangular plate and the slider slide in cooperation.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting up the toothed plate, the driving mechanism and the lifting mechanism, when the screen is blocked by vertical strip-shaped waste during use, the downward movement of the toothed plate and the cooperation of the driving mechanism drive the lifting mechanism to move towards the screen, and the top column pushes out the waste blocking the screen, thereby achieving the effect of unblocking the screen without stopping the machine for cleaning. At the same time, since the top plate is set relatively narrow, it will not affect the efficiency of the equipment. Furthermore, by setting up the first gear, the movable plate and the double-sided lead screw, when the toothed plate moves upward, the double-sided lead screw is rotated by the second gear and the first gear, and then the connecting block is moved a certain distance in one direction through the sleeve, thereby allowing the lifting mechanism to continue to unblock the following screen holes on the screen. Attached Figure Description

[0017] Figure 1 This is a frontal three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the bottom cross-section of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the lifting mechanism and the driving mechanism in this invention.

[0020] Figure 4 In this invention Figure 2 A schematic diagram of the structure at point A in the middle.

[0021] Figure 5 In this invention Figure 2 A schematic diagram of the structure at point B.

[0022] Figure 6 This is a schematic diagram of the structure of the rotating shaft, collar, and third gear in this invention.

[0023] Figure 7 This is a schematic diagram of the movable plate in this invention.

[0024] Figure 8 This is a schematic diagram of the arc-shaped plate and the receiving tube in this invention.

[0025] Figure 9 This is a schematic diagram of the cross-section of the connecting block in this invention.

[0026] Figure 10 This is a schematic diagram of the structure of the top column, buckle plate, extrusion plate and pull rope in this invention.

[0027] Figure 11 This is a schematic diagram of the structure of the second gear and the rotating shaft in this invention.

[0028] Figure 12 This is a schematic diagram of the slider in this invention.

[0029] In the diagram: 1. Shell; 2. Screen; 3. Buckle plate; 4. Rotating shaft; 5. Two-way lead screw; 6. Connecting block; 7. Collar; 8. Extrusion plate; 9. Round tube; 10. Toothed plate; 11. First gear; 12. Second gear; 13. Movable plate; 14. Slide groove; 15. Sliding block; 16. Top plate; 17. Sleeve; 18. Third gear; 19. First spring; 20. Top column; 21. Arc plate; 22. Storage tube; 23. Limiting plate; 24. Pull rope; 25. Piston plate; 26. Second spring. Detailed Implementation

[0030] Please see Figures 1-3In this embodiment of the invention, a construction solid waste treatment device includes a housing 1. A feed inlet is provided at one top end of the housing 1. A screen 2 is disposed inside the housing 1. A driving device for driving the screen 2 to vibrate up and down is provided at the top of the housing 1. A lifting mechanism is slidably fitted at the bottom of the screen 2. The two ends of the lifting mechanism are driven by a driving mechanism. Toothed plates 10 are symmetrically fixedly connected to the bottom ends of the screen 2 along the center. The toothed plates 10 are driven by the driving mechanism. Preferably, the screen 2 is inclined inside the housing 1, and a discharge outlet is fixedly provided at the end of the screen 2 away from the feed inlet. An inclined collection tray is located below screen 2, with a discharge port at the end of the collection tray furthest from the feed inlet. The collection tray is made of metal. After the construction solid waste is crushed by the crusher, a screening device is needed to separate the crushed construction solid waste particles that are suitable for recycling, thus achieving resource recycling. Simultaneously, it can also screen other waste materials besides concrete blocks and bricks, such as metal or large pieces of wood, from the crushed construction waste. When using the equipment, first start the machine. The screen 2 is driven by a drive device to vibrate up and down. Then, the crushed construction solid waste is fed into the feed inlet and falls onto the screen 2. The screen 2 then performs screening. However, since the construction solid waste mainly consists of concrete blocks or bricks, and concrete blocks generally contain reinforcing steel bars, which are very strong, concrete blocks can easily adhere to the steel bars during crushing. During screening, because the steel bars are vertical, they may become vertically oriented when entering the housing 1 from the feed inlet. If the solid waste inserted into the screen holes of screen 2 is not treated at this time, it may affect the screening operation or even damage screen 2. Therefore, during the vibration of screen 2, its two ends are driven by the toothed plate 10 and the drive mechanism to move the bottom lifting mechanism relative to screen 2 and clear the screen holes of screen 2, so as to prevent steel bars or other vertical solid waste from clogging screen 2. The construction solid waste that passes through screen 2 falls onto the collection tray and is discharged through the corresponding discharge port. The construction solid waste that does not fall on screen 2 is discharged through the corresponding discharge port.

[0031] Please see Figures 2-3 , Figure 8Preferably, the lifting mechanism includes a top plate 16; the top plate 16 is arranged parallel to the screen 2 and is located at the bottom of the screen 2. Top columns 20 are arranged in a central array on the top plate 16. The screen holes on the screen 2 are arranged in a uniform array of horizontal and vertical rows. Multiple sets of top columns 20 are arranged in a one-to-one correspondence with a row of screen holes on the screen 2, and the top columns 20 slide and adapt to the screen holes on the screen 2. The width of the top plate 16 is the same as the spacing between each row of screen holes on the screen 2 and the screen holes on both sides, thus avoiding the use of a large-area plate that would affect the screening efficiency. Connecting blocks 6 are fixedly arranged at both ends of the top plate 16. The side of the connecting block 6 away from the top plate 16 is provided with a toothed groove that meshes with the driving mechanism. Both sides are also slidably connected to the drive mechanism. When the drive mechanism rotates, the connecting block 6 can move up and down under the sliding limit of the drive mechanism through the toothed groove. In use, when the screen 2 moves from upward to downward during the up and down vibration process, the connecting block 6 moves relative to the screen 2 through the cooperation of the toothed plates 10 at both ends and the drive mechanism. The movement of the connecting block 6 causes the top plate 16 to move relative to the screen 2. The movement of the top plate 16 causes the top column 20 to move relative to the corresponding screen hole on the screen 2, so that the top column 20 extends into the screen hole on the screen 2 and pushes out the solid waste that is blocked inside, thereby ensuring that the screen hole on the screen 2 can perform normal screening work.

[0032] Please see Figures 8-10The top plate 16 has fixed fasteners 3 corresponding to the top post 20 on both sides. The fasteners 3 have a U-shaped structure. The top ends of both sides of the fasteners 3 are slidably connected to the compression plates 8. The bottom of the compression plates 8 is slidably fitted with the piston plate 25. The bottom of the piston plate 25 is fixedly connected to the first spring 19. The fasteners 3 have a hollow structure. The piston plate 25 and the first spring 19 are slidably embedded in the fasteners 3. The top post 20 is slidably connected to the top plate 16. A round tube 9 is fixedly installed between the bottom of the top plate 16 and the fasteners 3. The tube 9 is fitted around the outer periphery of the top plate 16, and the inner wall of the tube 9 is sealed and slidably fitted with the bottom outer wall of the top plate 16. The buckle plate 3 and the tube 9 are connected. In use, when the screen 2 moves upward, the piston plate 25 is positioned close to the top plate 16 inside the buckle plate 3 under the action of the first spring 19. The upper part of the pressing plate 8 extends out of the buckle plate 3, and the top of the top column 20 is close to the top plate 16, while its bottom is close to the buckle plate 3. When the screen 2 changes from an upward movement to a downward movement, the toothed plate 10 and the drive motor... The mechanism allows the top plate 16 to move relative to the screen 2. First, the extrusion plate 8 is brought into contact with the bottom of the screen 2, and the extrusion plate 8 retracts into the buckle plate 3. The movement of the extrusion plate 8 pushes the piston plate 25 towards the first spring 19, compressing the first spring 19. The movement of the piston plate 25 compresses the gas between the bottom of the buckle plate 3 and the piston plate 25 into the round tube 9. This causes the top column 20 to be pushed upward by the gas and inserted into the screen hole on the screen 2 to push out the blocked object. This avoids the situation where, when a vertical object is inserted into the screen hole on the screen 2, its insertion end may be tilted and protrude from the bottom of the screen 2. If the top column 20 protrudes from the top of the top plate 16 at the beginning, due to the small top area of ​​the top column 20, it may not be able to effectively push the insertion end out of the screen 2. Instead, the top column 20 moves upward from retracting into the top plate 16 and then protrudes. During this process, the top plate 16 can lift the bottom of the insertion end upward, thus better cooperating with the subsequent upward movement of the top column 20 to push it out.

[0033] Furthermore, a storage tube 22 is provided on the top periphery of the top column 20. An arc-shaped plate 21 is slidably connected inside the storage tube 22. The bottom of the storage tube 22 is slidably connected to the top inner wall of the top plate 16 through a fixing plate. A pull rope 24 is fixedly provided between the bottom of the fixing plate and the side of the extrusion plate 8 near the top plate 16. The pull rope 24 slides through the side walls of the top plate 16 and the buckle plate 3. Preferably, the side of the storage tube 22 opposite to the top column 20 has a hollow structure, and the sliding direction of the storage tube 22 on the top plate 16 is relative to the top column 20. The fixing plate and the inner wall of the top plate 16 are elastically connected by a third spring (not shown in the figure). The storage tube 22 and the arc-shaped plate 21 form a telescopic ring, which is concentric with the top column 20. The insertion end of the waste can be corrected by the cooperation of the storage tube 22 and the arc-shaped plate 21. This causes the bottom of the insertion end to move to engage with the top of the top column 20 through the cooperation of the receiving tube 22 and the arc plate 21. During use, when the screen 2 moves upward, the extrusion plate 8 protrudes from the top plate 16, the receiving tube 22 and the arc plate 21 are in their maximum circular state, and the top column 20 retracts into the top plate 16. When the screen 2 moves from upward to downward, the bottom of the insertion end of the waste is in contact with the receiving tube 22 or the arc plate 21, while the extrusion plate 8 engages with the bottom of the screen 2 and retracts into the buckle plate 3. This causes the extrusion plate 8 to pull the receiving tube 22 relative to the top column 20 through the pull rope 24. The movement of the receiving tube 22 causes the arc plate 21 to slide and retract into the receiving tube 22, thereby moving the insertion end of the waste to the top of the top column 20. Then, the top column 20 moves upward to push the inserted waste out of the screen holes on the screen 2.

[0034] Please see Figures 1-7 , Figure 9 , Figures 11-12The driving mechanism includes a rotating shaft 4; both ends of the rotating shaft 4 are rotatably connected to the inner wall of the housing 1. Second gears 12 are provided at both ends of the rotating shaft 4, meshing with a toothed plate 10. When the toothed plate 10 moves upward, it drives the second gears 12 to rotate, but the second gears 12 cannot drive the rotating shaft 4 to rotate. When the toothed plate 10 moves downward, the second gears 12 drive the rotating shaft 4 to rotate. A third gear 18 is provided at the center of the rotating shaft 4, meshing with a tooth groove on the connecting block 6 in the lifting mechanism. Sliding grooves 14 are symmetrically embedded along the upper axial direction of the rotating shaft 4. The third gear 18 slides with the sliding grooves 14 through a protrusion. The protrusion is located on the inner ring sidewall of the third gear 18 and slides with the sliding grooves 14. When the rotating shaft 4 rotates, it drives the second gear 18 to rotate. The sliding groove 14 and the protrusion drive the third gear 18 to rotate. The rotation of the third gear 18 meshes with the tooth groove on the connecting block 6, causing the connecting block 6 to move upward. The upward movement of the connecting block 6 causes the top plate 16 to move relative to the screen 2 at this time. When the toothed plate 10 changes from downward to upward movement, the second gear 12 cannot drive the rotating shaft 4 to rotate. Under the gravity of the top plate 16 and the top column 20 and the impact of the construction solid waste passing through the screen 2, the connecting block 6 quickly moves downward to reset, ready for the next operation. The two sides of the third gear 18 are rotatably connected with collars 7. The end of the collar 7 away from the rotating shaft 4 is fixedly connected to the limiting plate 23. The limiting plate 23 is slidably connected to the connecting block 6. The collar 7 is sleeved on the periphery of the rotating shaft 4.

[0035] Furthermore, preferably, trapezoidal blocks are fixedly connected to both ends of the rotating shaft 4, and a wedge plate that slides with the trapezoidal blocks is rotatably provided on the inner wall of the second gear 12. The side of the wedge plate away from the rotating shaft 4 is elastically connected to the inner wall of the second gear 12 through a fourth spring. The wedge plate slides with the trapezoidal blocks. When the toothed plate 10 moves upward, the toothed plate 10 cannot drive the rotating shaft 4 to rotate through the second gear 12. When the toothed plate 10 moves downward, the rotating shaft 4 is driven to rotate through the second gear 12.

[0036] Furthermore, L-shaped grooves are formed on both sides of the inner wall of the housing 1, corresponding to the positions of the toothed plate 10 and the second gear 12. A movable plate 13 is elastically connected to the L-shaped grooves via elastic columns. A first gear 11 is rotatably connected to the movable plate 13. The first gear 11 meshes with the side of the second gear 12 away from the toothed plate 10. A bidirectional lead screw 5 is driven to the side of the first gear 11 away from the movable plate 13. A sleeve 17 is rotatably connected to the bidirectional lead screw 5. A cylinder fixedly connected inside the sleeve 17 reciprocates with the threaded groove on the bidirectional lead screw 5. The sliding plate 13 is embedded in the inner wall of the connecting block 6. The side wall of the connecting block 6 is a through structure. The movable plate 13 has a vertical groove on the side wall corresponding to the toothed plate 10. The slider 15 is elastically connected to the vertical groove by the second spring 26. The slider 15 slides and fits against the toothed plate 10. Preferably, the top plate 16 moves back and forth on the bidirectional screw 5 by means of the reciprocating thread groove on the bidirectional screw 5 and the cylinder in the sleeve 17. Each rotation of the bidirectional screw 5 causes the top plate 16 to move a fixed distance, which is the spacing between the sieve holes in each row on the screen 2. Both ends of rod 5 are fixedly connected to the first gear 11 via movable telescopic columns. This allows the first gear 11 to move and engage or disengage with the second gear 12 when the movable plate 13 moves, preventing it from being unable to move due to the fixed length of the bidirectional lead screw 5. Additionally, a triangular plate protruding upwards is provided at the bottom of the "L" groove, with its inclined surface facing the movable plate 13. The bottom of slider 15 also has an inclined surface facing the triangular plate. When slider 15 slides downwards, the inclined surface of slider 15 slides against the apex of the triangular plate, allowing slider 15 to move towards the movable plate 13. The plate 13 moves in the direction and retracts into the "L" groove, thereby pushing the movable plate 13 to move into the "L" groove. In order to make the end of the slider 15 away from the movable plate 13, when it is in contact with the side wall of the toothed plate 10, the slider 15 will not be unable to move upward due to the friction between the two. A ball can be rotatably set at the end of the slider 15 away from the movable plate 13. In this way, when the end of the slider 15 away from the movable plate 13 is in contact with the side wall of the toothed plate 10, the friction between the two is reduced by the ball, so that the slider 15 can move and reset better under the action of the second spring 26.

[0037] In practical use, when the screen 2 is not vibrating up and down, the upper end of the toothed plate 10 meshes with the second gear 12, and there is a gap between the top plate 16 and the screen 2. This does not hinder the screening work of the screen 2 corresponding to the top plate 16. The movable plate 13 retracts into the innermost part of the "L" groove, and the slider 15 is also in the "L" groove, with the end away from the movable plate 13 attached to the side wall of the toothed plate 10. The first gear 11 and the second gear 12 mesh, and the top column 20 on the top plate 16 corresponds to a row of screen holes on the screen 2. When the screen 2 is started to perform screening, the toothed plate 10 moves upward with the screen 2. The movement of the toothed plate 10 causes the second gear 12 to rotate. The rotation of the second gear 12 does not drive the rotating shaft 4 to rotate, but instead drives the first gear 11 to rotate. The rotation of the first gear 11 drives the double-acting screw 5 to rotate. The rotation of the double-acting screw 5, through the sleeve 17 which is slidably connected to the inner wall of the connecting block 6, causes the connecting block 6 to move a certain distance to one side. This allows the top post 20 on the top plate 16 to correspond to the screen holes on the screen 2 below. Since the third gear 18 is slidably connected to the rotating shaft 4 through the protrusion and groove 14, and is also engaged by the collars 7 that rotatably connect both sides of the third gear 18, the third gear 18 can... The toothed plate 10 slides along the connecting block 6 on the rotating shaft 4. When the toothed plate 10 moves upward with the screen 2 to its maximum height, it separates from the slider 15. At this time, since one end of the slider 15 is not limited, the movable plate 13 is pushed towards the toothed plate 10 under the action of the elastic column. The movement of the movable plate 13 pushes the slider 15 to extend out of the "L" groove, so that the top of the slider 15 fits against the bottom of the toothed plate 10. The movement of the movable plate 13 also pushes the first gear 11 to separate from the second gear 12. Therefore, when the toothed plate 10 moves downward, the meshing transmission between the toothed plate 10 and the second gear 12 will only drive the rotating shaft 4 to rotate. Without driving the first gear 11 to rotate, the lifting mechanism moves to clear the screen holes on the screen 2. When the toothed plate 10 moves downward, it also pushes the slider 15 downward to slide and engage with the triangular plate. Thus, the slider 15 pushes the movable plate 13 to the innermost part of the "L" groove, allowing the first gear 11 and the second gear 12 to mesh again. When the toothed plate 10 rises again and drives the first gear 11 to rotate through the second gear 12, the double-acting screw 5 and the sleeve 17 work together to move the top plate 16 again, so that the top column 20 on the top plate 16 engages with the next row of screen holes on the screen 2.

Claims

1. A construction solid waste treatment device, comprising a shell, an inlet at one top end of the shell, a screen inside the shell, and a driving device at the top of the shell for driving the screen to vibrate up and down; characterized in that, The bottom of the screen is slidably fitted with a lifting mechanism, and the two ends of the lifting mechanism are driven by a driving mechanism. The bottom ends of the screen are symmetrically fixed with toothed plates along the center. The toothed plates are driven by the driving mechanism. When the toothed plates move downward, the driving mechanism drives the lifting mechanism to move relative to the screen. The lifting mechanism includes a top plate; the top plate has a central array of top columns, and connecting blocks are fixedly provided at both ends of the top plate. The connecting blocks have a toothed groove on the side away from the top plate that meshes with the driving mechanism, and the two sides of the connecting blocks are also slidably connected to the driving mechanism. When the driving mechanism rotates, the connecting blocks can move up and down under the sliding limit of the driving mechanism through the toothed groove. The driving mechanism includes a rotating shaft; both ends of the rotating shaft are rotatably connected to the inner wall of the housing, and the two ends of the rotating shaft are provided with second gears that mesh with the toothed plates. The center of the rotating shaft is provided with a third gear that meshes with the toothed groove. The upper edge of the rotating shaft is symmetrically embedded with sliding grooves. The third gear slides with the sliding grooves through protrusions. The two sides of the third gear are rotatably connected with collars. The end of the collar away from the rotating shaft is fixedly connected to a limiting plate. The limiting plate is slidably connected to a connecting block. The collar is sleeved on the periphery of the rotating shaft.

2. The construction solid waste treatment device according to claim 1, characterized in that, The top plate is arranged parallel to the screen and at the bottom of the screen. Multiple sets of top columns are arranged in one-to-one correspondence with a row of screen holes on the screen, and the top columns and screen holes on the screen are slidably adapted to each other.

3. The construction solid waste treatment device according to claim 2, characterized in that, The top plate is fixedly connected to two sides with corresponding buckle plates. The buckle plates are hollow. The top ends of the buckle plates are slidably connected to extrusion plates. The bottom of the extrusion plates is slidably fitted with piston plates. The bottom of the piston plates is fixedly connected to a first spring. The piston plates and the first spring are slidably embedded in the buckle plates. The top columns are slidably connected to the top plate. A round tube is fixedly installed between the bottom of the top plate and the buckle plates. The round tube is sleeved on the outside of the top plate, and the inner wall of the round tube is slidably fitted to the bottom outer wall of the top plate. The buckle plates and the round tube are connected.

4. The construction solid waste treatment device according to claim 3, characterized in that, A storage tube is provided on the top periphery of the top column. An arc-shaped plate is slidably connected inside the storage tube. The bottom of the storage tube is slidably connected to the top inner wall of the top plate through a fixing plate. A pull rope is fixedly installed between the bottom of the fixing plate and the extrusion plate. The pull rope slides through the side walls of the top plate and the buckle plate. The fixing plate and the inner wall of the top plate are elastically connected.

5. A construction solid waste treatment device according to claim 1, characterized in that, Trapezoidal blocks are fixedly connected to both ends of the rotating shaft. A wedge plate that slides with the trapezoidal blocks is rotatably provided on the inner wall of the second gear. The side of the wedge plate away from the rotating shaft is elastically connected to the inner wall of the second gear. The wedge plate slides with the trapezoidal blocks. When the tooth plate moves, the tooth plate cannot drive the rotating shaft to rotate through the second gear. When the tooth plate moves downward, the rotating shaft is driven to rotate through the second gear.

6. A construction solid waste treatment device according to claim 5, characterized in that, The inner walls of the housing have "L" grooves on both sides corresponding to the positions of the toothed plate and the second gear. A movable plate is elastically connected to the "L" grooves via elastic columns. A first gear is rotatably connected to the movable plate. The first gear meshes with the second gear on the side away from the toothed plate. A bidirectional lead screw is driven to the side of the first gear away from the movable plate. A sleeve is rotatably connected to the bidirectional lead screw. The sleeve is slidably embedded in the inner wall of the connecting block. A vertical groove is formed on the side wall of the movable plate corresponding to the toothed plate. A slider is elastically connected to the vertical groove via a second spring. The slider slides in contact with the toothed plate.

7. A construction solid waste treatment device according to claim 6, characterized in that, The two ends of the bidirectional lead screw are fixedly connected to the first gear through movable telescopic columns. The bottom of the "L" groove is provided with an upwardly protruding triangular plate, and the inclined surface of the triangular plate faces the movable plate. The bottom of the slider is provided with an inclined surface facing the triangular plate. The triangular plate and the slider slide in cooperation.

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