Solid waste screening device

Abstract

The invention discloses a solid waste screening device, and relates to the technical field of waste treatment. The device comprises a screening box, and the screening box is in sliding connection with a recycling box through a first sliding rail; a rotating assembly and a lifting assembly are installed at the two ends of the outer wall of the bottom of the screening box correspondingly, a first side plate in the rotating assembly is rotationally connected with a first clamping plate through a first plate shaft, and the tail end of a hydraulic rod in the lifting assembly is connected with a connecting shaft through a rod sleeve. The top of the screening box is provided with a box groove used for installing the dust collection assembly. A small-ring bearing is embedded in the right side wall of the screening box, and the screening box is in running fit with a small screening cylinder in the first-stage screening assembly through the small-ring bearing. A second-stage screening assembly is further arranged outside the small screening cylinder. The size of the device can be reduced through the first-stage screening assembly and the second-stage screening assembly which are mutually nested, classified output of solid waste in the device is facilitated through the rotating assembly and the lifting assembly, and dust in the screening box can be absorbed through the dust suction assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste treatment, and particularly relates to a solid waste screening device. Background Art

[0002] Waste can be classified into solid waste, liquid waste, and dust waste according to its state. The equipment used for storing and transporting waste in different states is different. In production activities, in order to ensure the maximum storage effect and maximum transportation effect of waste, it is necessary to classify waste. This not only facilitates its subsequent recycling, but also facilitates storage and transportation. Especially for solid waste, a screening device is needed to screen the waste. The screening device mainly includes a feeding hopper, a screening frame, a driving mechanism, and a recycling box. The driving mechanism can be used to pull the screening frame to shake, so that the solid waste entering the screening frame through the feeding hopper is vibrated and screened, and the screened waste enters different recycling boxes respectively.

[0003] A solid waste screening device with the existing publication number CN214865228U discloses a solid waste screening device, including a primary screening driving mechanism, a primary screening rotation assisting mechanism, a secondary screening driving mechanism, a bottom accommodating shell, a bottom sliding fitting block one, a bottom sliding fitting block two, a main support vertical plate one, a main support vertical plate two, a primary screening operation groove, and a secondary screening operation groove. The present invention belongs to the technical field of solid waste treatment, and specifically relates to a solid waste screening device. By setting the primary screening driving mechanism, the primary screening rotation assisting mechanism, and the secondary screening driving mechanism, the screening effect of the solid waste screening device is improved, the screening process of the solid waste screening device is enriched, the mechanization level of the solid waste screening device is improved, the working efficiency of the solid waste screening device is improved, the automation degree of the solid waste screening device is enhanced, the use experience of the solid waste screening device is improved, and the maintenance cost of the solid waste screening device is reduced.

[0004] For the above-mentioned solid waste screening device, a primary screening drum is provided to conduct preliminary screening on solid waste, and a secondary screening plate is further provided below the primary screening drum for secondary screening of the preliminarily screened waste. However, since there is a shell outside the device, it is difficult to take out the solid waste retained in the primary screening drum and the solid waste retained on the secondary screening plate after screening; in addition, the primary screening drum will vibrate and rotate with the solid waste inside it, and the secondary screening plate will jolt up and down with the solid waste on it during operation, so the dust attached to the solid waste will spill out from the sieve holes to the outside, seriously affecting the environmental health of the gas. Summary of the Invention

[0005] The object of the present invention is to provide a solid waste screening device. By using the mutually nested primary screening component and secondary screening component, the volume of the device can be reduced. By using the rotating component and the lifting component, the classified output of solid waste in the device is facilitated. By using the dust suction component, the dust in the screening box can be absorbed, solving the problems that occur in the above-mentioned solid waste screening device.

[0006] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0007] The present invention is a solid waste screening device, including a screening box. Inside the screening box, there is a screening groove. A slide rail one is installed inside the bottom of the screening groove. The screening box is slidably connected to the recycling box through the slide rail one. The front side wall of the screening box is also rotatably connected with a box cover, and a controller is inlaid on the box cover;

[0008] At both ends of the outer wall of the bottom of the screening box, a rotating component and a lifting component are respectively installed. At both ends of the bottom plate one in the rotating component, side plates one are welded. The side plates one are rotatably connected with clamping plates one through plate shafts one. At both ends of the bottom plate two in the lifting component, side plates two are welded. The side plates two are connected with rod seats through plate shafts two. The rod seats are threadedly connected to the ends of hydraulic rods. The other ends of the hydraulic rods are connected to a connecting shaft through rod sleeves. The connecting shaft also penetrates through a clamping plate two. The clamping plate two is also slidably connected in cooperation with a slide rail two;

[0009] A box groove for installing a dust suction component is opened at the top of the screening box. Inside the dust suction hood in the dust suction component, a dust collection bag is installed. The dust suction hood is connected to the air nozzle of a vacuum cleaner through a communication plate. The vacuum cleaner is clamped on the communication plate through mounting brackets on both sides of it;

[0010] A small ring bearing is inlaid on the right side wall of the screening box. The screening box is rotationally matched with the small screening cylinder in the primary screening component through the small ring bearing. Large screening holes are opened on the outer wall of the small screening cylinder. The right end of the small screening cylinder is also rotationally connected to a driving member one. A feed hopper is also installed at the right end of the small screening cylinder;

[0011] The secondary screening component is also arranged outside the small screening cylinder. Small screening holes are opened on the outer wall of the large screening cylinder in the secondary screening component. A sealing ring is installed at the right end of the large screening cylinder. The large screening cylinder is matched with the outer wall of the small screening cylinder through the sealing ring. The left end of the large screening cylinder is also rotationally connected to a driving member two.

[0012] Furthermore, small ring bearings and large ring bearings are respectively inlaid and installed on the right side wall and the left side wall of the screening box. The screening box is rotationally connected in cooperation with the outer walls of the small screening cylinder and the large screening cylinder through the small ring bearing and the large ring bearing respectively.

[0013] Further, the rotating assembly and the lifting assembly are respectively arranged on both sides of the bottom of the screening box. The clamping plate one in the rotating assembly is welded to the outer wall of the bottom of the screening box, and the side plate one is inserted into the notch on the clamping plate one.

[0014] Further, the slide rail two in the lifting assembly is detachably and fixedly connected to the outer wall of the bottom of the screening box by bolts, and the rod seat and the rod sleeve are respectively arranged in the notches inside the side plate two and the clamping plate two.

[0015] Further, the chamber inside the dust suction hood is communicated with the screening slot of the screening box through a box slot. A hood opening for clamping the connecting plate is provided at the top of the dust suction hood, and the dust collection bag is detachably and fixedly connected to the dust suction hood through the mounting shaft at its shaft end.

[0016] Further, a sealing cover one is threadedly connected to the left side wall of the small screening cylinder in the primary screening assembly, and a sealing cover two is also threadedly connected to the left end of the large screening cylinder in the secondary screening assembly.

[0017] A ring groove is formed on the inner wall of the sealing ring at the right end of the large screening cylinder, and a spring is adhesively bonded to the inner wall of the ring groove. The other end of the spring is adhesively bonded to the sealing plate, and the sealing plate is slidably matched with the inner wall of the ring groove. A soft rubber strip is also adhesively bonded to the side wall of the sealing plate.

[0018] Further, a total of four sealing plates are provided in the sealing ring. The four sealing plates are arranged in a circular array structure. The sealing plates are in contact with each other through the soft rubber strips on their side walls, and the arc-shaped inner wall of the sealing plate is matched with the outer wall of the right end of the small screening cylinder.

[0019] Further, a small grooved pulley one is sleeved on the shaft end of the motor one in the driving member one, and the small grooved pulley one is synchronously rotationally connected to the small grooved pulley two through a belt one. The small grooved pulley two is sleeved on the outer wall of the right end of the small screening cylinder, and the motor one is also connected to the upper side wall of the screening box through a frame one.

[0020] Further, a feed pipe is sleeved on the bottom side wall of the feed hopper, and a pipe rack is clamped at the bottom of the feed hopper. The pipe rack is connected to the right side wall of the screening box, and the outer wall of the other shaft end of the feed pipe is matched with the inner wall of the right end of the small screening cylinder. The feed pipe is communicated with the small screening cylinder.

[0021] Further, a large grooved pulley one is sleeved on the shaft end of the motor two in the driving member two, and the large grooved pulley one is synchronously rotationally connected to the large grooved pulley two through a belt two. The large grooved pulley two is sleeved on the outer wall of the left end of the large screening cylinder, and the motor two is connected to the upper side wall of the screening box through the frames two at its two ends.

[0022] The present invention has the following beneficial effects:

[0023] 1. The present invention can greatly reduce the space occupied by the screening device through the mutually nested primary screening component and secondary screening component, making the device small and compact, which is more convenient for transportation. At the same time, the mutually nested primary screening component and secondary screening component with opposite rotation directions can greatly improve the screening efficiency of solid waste.

[0024] 2. The present invention can lift one side of the screening box through the rotating component and lifting component at the bottom of the screening box. When one side of the screening box is lifted, the solid waste retained in the primary screening component and secondary screening component will move towards the side where the first sealing cover and the second sealing cover are located. Then, the first sealing cover and the second sealing cover can be opened in sequence to separately take out the solid waste retained in the primary screening component and secondary screening component.

[0025] 3. The present invention can recover the dust particles floating inside the screening box generated during the screening of solid waste by the primary screening component and secondary screening component through the dust suction component installed on top of the screening box, and make them enter the dust collection bag for storage, improving the internal environment of the screening box of the screening device.

[0026] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 is a schematic structural diagram of the present invention Figure 1 ;

[0029] Figure 2 is a schematic structural diagram of the present invention Figure 2 ;

[0030] Figure 3 is a schematic structural diagram of the present invention Figure 3 ;

[0031] Figure 4 is an exploded structural diagram of the screening box and the box cover;

[0032] Figure 5 is an exploded structural diagram of the rotating component;

[0033] Figure 6 is an exploded structural diagram of the dust suction component;

[0034] Figure 7It is a structural disassembly diagram of the primary screening component.

[0035] Figure 8 It is a structural disassembly diagram of the secondary screening component.

[0036] Figure 9 It is Figure 8 a structural disassembly diagram of the sealing ring in

[0037] In the attached drawings, the list of components represented by each label is as follows:

[0038] 1. Screening box; 101. Screening trough; 101a. First slide rail; 102. Recycling box; 103. Box trough; 104. Small ring bearing; 105. Large ring bearing; 2. Box cover; 201. Controller; 3. Rotating component; 301. First bottom plate; 302. First side plate; 302a. First plate shaft; 303. First clamping plate; 4. Lifting component; 401. Second bottom plate; 402. Second side plate; 402a. Second plate shaft; 403. Hydraulic rod; 403a. Rod seat; 403b. Rod sleeve; 404. Second clamping plate; 404a. Connecting shaft; 405. Second slide rail; 5. Dust suction component; 501. Dust suction hood; 501a. Hood opening; 502. Dust collection bag; 502a. Installation shaft; 503. Connecting plate; 504. Vacuum cleaner; 504a. Installation frame; 6. Primary screening component; 601. Small screening cylinder; 601a. Large screening holes; 601b. First sealing cover; 602. First driving part; 602a. First motor; 602b. First frame; 602c. First small sheave; 602d. First belt; 602e. Second small sheave; 7. Secondary screening component; 701. Large screening cylinder; 701a. Small screening holes; 701b. Second sealing cover; 701c. Sealing ring; 701c-1. Ring groove; 701c-2. Spring; 701c-3. Sealing plate; 701c-4. Soft rubber strip; 702. Second driving part; 702a. Second motor; 702b. Second frame; 702c. First large sheave; 702d. Second belt; 702e. Second large sheave. Detailed implementation mode

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0040] Embodiment 1

[0041] Please refer to Figures 1-3 , the present invention is a solid waste screening device, and a screening box 1 is also provided. The recycling box 102 is slidably connected to the inner bottom side of the screening box 1, and the smallest particulate matter of the screened solid can be recycled through the recycling box 102.

[0042] Specifically, a screening tank 101 is provided inside the screening box 1. A first slide rail 101a is fixedly connected to the bottom inner wall of the screening tank 101. The screening tank 101 is slidably connected to the recycling box 102 through the first slide rail 101a. A box cover 2 is rotatably connected to the front side wall of the screening box 1, and a controller 102 is embedded in the box cover 2.

[0043] Furthermore, a small ring bearing 104 is embedded in the right side wall of the screening box 1. The screening box 1 is rotatably connected to the end of the small screening cylinder 601 in the first-stage screening assembly 6 through the small ring bearing 104. A large ring bearing 105 is embedded in the left side wall of the screening box 1. The screening box 1 is rotatably connected to the large screening cylinder 701 in the second-stage screening assembly 6 through the large ring bearing 105. A box groove 103 is also provided at the top of the screening box 1. The screening box 1 is connected to the dust suction hood 501 in the dust suction assembly 5 through the box groove 103.

[0044] The operation process of this embodiment is as follows: When in use, the box cover 2 can be opened by flipping. When the box cover 2 is opened, the first-stage screening assembly 6 and the second-stage screening assembly 7 can be disassembled, maintained, and repaired. In addition, the recycling box 102 on the first slide rail 101a can be pulled out to facilitate the removal of the finest granular solid waste in the recycling box 102.

[0045] Embodiment 2

[0046] Please refer to Figures 4-5 , on the basis of Embodiment 1, a rotating assembly 3 and a lifting assembly 4 are further provided. By using the lifting assembly 4 and in cooperation with the rotating assembly 3, one side of the screening box 1 can be lifted, making the first-stage screening assembly 6 and the second-stage screening assembly 7 tilt towards one side, facilitating the dumping of the solid waste remaining in the first-stage screening assembly 6 and the second-stage screening assembly 7.

[0047] Specifically, the rotating assembly 3 and the lifting assembly 4 are respectively arranged on both sides of the bottom of the screening box 1. Both ends of the bottom plate 301 in the rotating assembly 3 are welded with side plates 302. The side plates 302 are inserted and matched with the clamping plates 303. At the same time, the side plates 302 and the clamping plates 303 are also rotatably connected through a plate shaft 302a. Meanwhile, the clamping plates 303 are welded to the bottom side wall of the screening box 1.

[0048] Further, on both sides of the upper side wall of the second bottom plate 401 in the lifting assembly 4, second side plates 402 are welded. A second plate shaft 402a is inserted and rotatably connected in the second side plates 402. A rod seat 403a is also sleeved on the second plate shaft 402. One end of the hydraulic rod 403 is connected to the second plate shaft 402 through the rod seat 403a. The other end of the hydraulic rod 403 is connected to a connecting shaft 404a through a rod sleeve 403b. The connecting shaft 404a is inserted through the second clamping plate 404. At the same time, the top of the second clamping plate 404 is also slidably connected to a second slide rail 405. The second slide rail 405 is also detachably and fixedly installed on the bottom side wall of the screening box 1.

[0049] The operation process of this embodiment is as follows: When in use, when the hydraulic rod 403 works and extends, it will push the connecting shaft 404a at its shaft end to slide on the second clamping plate 404. Because the hydraulic rod 403 is inclined by itself, while sliding, it will lift the screening box 1 on this side and make the screening box 1 inclined. By sequentially rotating and opening the first sealing cover 601b and the seventh sealing cover 701b, the solid waste retained in the small screening cylinder 601 and the large screening cylinder 701 can flow out in sequence, facilitating the classified recycling of the solid waste.

[0050] Embodiment 3

[0051] Please refer to Figure 6 , on the basis of Embodiments 1-2, a dust suction assembly 5 is further provided. By using the dust suction assembly 5 installed on the top of the screening box 1, the dust particles in the inner cavity of the screening box 1 can be absorbed and stored in the dust collection bag 502.

[0052] Specifically, the dust suction hood 501 in the dust suction assembly 5 covers the box groove 103 on the top of the screening box 1. A dust collection bag 502 is also installed on the inner top side of the dust suction hood 501. The top of the dust suction hood 501 is communicated with the air inlet end of the vacuum cleaner 504 through a connecting plate 503.

[0053] Further, a cover opening 501a for clamping the connecting plate 503 is opened on the top of the dust suction hood 501. The dust collection bag 502 is detachably connected to the dust suction hood 501 through the mounting shafts 502a inserted through both ends thereof. Both sides of the vacuum cleaner 504 are clamped on the outer wall of the connecting plate 503 through mounting brackets 504a.

[0054] The operation process of this embodiment is as follows: When in use, the vacuum cleaner 504 works, generating negative pressure. This part of the negative pressure is transmitted to the inside of the dust suction hood 501 through the connecting plate 503. The internal chamber of the dust suction hood 501 also presents a negative pressure state, enabling the dust particles in the screening box 1 to enter the dust suction hood 501 through the box groove 103. Then, the dust particles inside are blocked by the water-drop-shaped dust collection bag 502, while the gas therein passes through the fine holes on the dust collection bag 502 and enters the rear connecting plate 503 and the vacuum cleaner 504 to complete the dust suction work.

[0055] Embodiment 4

[0056] Please refer to Figure 7 , on the basis of Embodiments 1 - 3, a primary screening component 6 is further provided. By using the primary screening component 6, large-particle solid waste can be screened to achieve the primary screening of solid waste.

[0057] Specifically, large screening holes 601a are provided on the small screening cylinder 601 in the primary screening component 6, and a first sealing cover 601b is threadedly connected to the left end of the small screening cylinder 601. At the same time, a first driving member 602 is also installed on the upper side wall of the screening box 1 corresponding to the right end of the small screening cylinder 601. Among them, a small grooved pulley 602c is sleeved on the shaft end of the motor 602a of the first driving member 602, and the small grooved pulley 602c is synchronously rotationally connected to the small grooved pulley 602e through a first belt 602d. The small grooved pulley 602e is also sleeved on the outer wall of the small screening cylinder 601. At the same time, the motor 602a is connected to the screening box 1 through the outer frame 602b thereof.

[0058] Furthermore, a feed hopper 603 is installed at the right end of the small screening cylinder 601. Among them, a feed pipe 603a is sleeved at the bottom of the feed hopper 603, and the feed pipe 603a penetrates into the right end inside of the small screening cylinder 601. A pipe support 603b is clamped at the bottom of the feed hopper 603, and the pipe support 603b is detachably fixed to the right side wall of the screening box 1 through bolts.

[0059] The operation process of this embodiment is as follows: When in use, the solid waste to be screened can be put in through the feed hopper 603, and then the solid waste is input into the small screening cylinder 601 through the feed pipe 603a. Then, the motor 602a in the first driving member 602 works. Through the linkage effect of the small grooved pulley 602c, the first belt 602d, and the small grooved pulley 602e, the small screening cylinder 601 rotates accordingly, and the solid waste in the small screening cylinder 601 can be primarily screened.

[0060] Embodiment 5

[0061] Please refer to Figures 8-9, on the basis of Embodiments 1-4, a secondary screening assembly 7 is further provided. The secondary screening assembly 7 is installed outside the primary screening assembly 6 in a socketed manner, which can greatly reduce the space volume of the device. At the same time, it can better screen the solid waste flowing out of the primary screening assembly 6 again. And because the rotation directions between the primary screening assembly 6 and the secondary screening assembly 7 are opposite, the gas in the chambers between them forms a turbulent flow phenomenon, which can better improve the screening efficiency.

[0062] Specifically, small screening holes 701a are provided on the outer wall of the large screening cylinder 701 in the secondary screening assembly 7. A second sealing cover 701b is threadedly connected to the right end of the large screening cylinder 701. A second driving member 702 is provided on the upper side wall of the screening box 1 corresponding to the left end of the large screening cylinder 701. A first large sheave 702c is sleeved on the shaft end of the second motor 702a in the second driving member 702. The first large sheave 702c is synchronously rotationally connected to a second large sheave 702e through a second belt 702d. And the second large sheave 702e is also sleeved on the outer wall of the left end of the large screening cylinder 701. Among them, the second motor 702a is connected to the top side wall of the screening box 1 through the second frame 702b on its outer side.

[0063] Furthermore, a sealing ring 701c is also installed on the right side wall of the large screening cylinder 701. Among them, a ring groove 701c-1 is provided on the inner wall of the sealing ring 701c. A spring 701c-2 is bonded to the inner wall of the ring groove 701c-1. And the sealing ring 701c is adhesively connected to a sealing plate 701c-3 through the spring 701c-2. Soft rubber strips 701c-4 are adhesively bonded to both outer walls of the sealing plate 701c-3. The inner side wall of the sealing plate 701c-3 cooperates with the outer wall of the small screening cylinder 601.

[0064] The operation process of this embodiment is as follows: When in use, since the large screening cylinder 701 is sleeved outside the screening cylinder 601, the solid waste flowing out of the large screening holes 601a on the outer wall of the small screening cylinder 601 enters the large screening cylinder 701. Subsequently, with the cooperation of the first large sheave 702c, the second belt 702d and the second large sheave 702e, the second motor 702a can drive the large screening cylinder 701 to rotate, and then the solid waste entering the large screening cylinder 701 can be subjected to secondary screening work.

[0065] The above are only the preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the foregoing embodiments, any equivalent replacement of some technical features, and any modification, equivalent replacement, and improvement made all fall within the protection scope of the present invention.

Claims

1. A solid waste screening device, comprising a screening box (1), characterized in that: Inside the screening box (1), there is a screening tank (101). Inside the bottom of the screening tank (101), a first slide rail (101a) is installed. The screening box (1) is slidably connected to the recycling box (102) through the first slide rail (101a). On the front side wall of the screening box (1), a box cover (2) is rotatably connected. A controller (201) is inlaid on the box cover (2). At both ends of the outer wall of the bottom of the screening box (1), a rotating assembly (3) and a lifting assembly (4) are respectively installed. At both ends of the bottom plate one (301) in the rotating assembly (3), side plates one (302) are welded. The side plates one (302) are rotatably connected to the clamping plate one (303) through the plate shaft one (302a). At both ends of the bottom plate two (401) in the lifting assembly (4), side plates two (402) are welded. The side plates two (402) are connected to the rod seat (403a) through the plate shaft two (402a). The rod seat (403a) is threadedly connected to the end of the hydraulic rod (403). The other end of the hydraulic rod (403) is connected to the connecting shaft (404a) through the rod sleeve (403b). The connecting shaft (404a) also penetrates through the clamping plate two (404). The clamping plate two (404) is also slidably connected in cooperation with the second slide rail (405). On the top of the screening box (1), a box groove (103) for installing a dust suction assembly (5) is provided. Inside the dust suction hood (501) in the dust suction assembly (5), a dust collection bag (502) is installed. The dust suction hood (501) is connected to the air nozzle of the vacuum cleaner (504) through the connecting plate (503). The vacuum cleaner (504) is clamped on the connecting plate (503) through the mounting brackets (504a) on both sides thereof. A small circular bearing (104) is inlaid on the right side wall of the screening box (1). The screening box (1) is rotationally matched with the small screening cylinder (601) in the primary screening assembly (6) through the small circular bearing (104). On the outer wall of the small screening cylinder (601), large screening holes (601a) are provided. The right end of the small screening cylinder (601) is also rotationally connected to the driving member one (602). A feed hopper (603) is also installed at the right end of the small screening cylinder (601). Outside the small screening cylinder (601), there is also a secondary screening assembly (7). On the outer wall of the large screening cylinder (701) in the secondary screening assembly (7), small screening holes (701a) are provided. A sealing ring (701c) is installed at the right end of the large screening cylinder (701). The large screening cylinder (701) is matched with the outer wall of the small screening cylinder (601) through the sealing ring (701c). The left end of the large screening cylinder (701) is also rotationally connected to the driving member two (702).

2. The solid waste screening device according to claim 1, wherein: On the right side wall and the left side wall of the screening box (1), a small circular bearing (104) and a large circular bearing (105) are respectively installed in an inlaid manner. The screening box (1) is rotationally connected in cooperation with the outer walls of the small screening cylinder (601) and the large screening cylinder (701) through the small circular bearing (104) and the large circular bearing (105) respectively.

3. The solid waste screening device according to claim 1, wherein: The rotating assembly (3) and the lifting assembly (4) are respectively arranged on both sides of the bottom of the screening box (1). The clamping plate one (303) in the rotating assembly (3) is welded to the outer wall of the bottom of the screening box (1), and the side plate one (302) is inserted into the notch on the clamping plate one (303).

4. The solid waste screening device according to claim 3, characterized in that: The slide rail two (405) in the lifting assembly (4) is detachably fixed to the outer wall of the bottom of the screening box (1) by bolts. The rod seat (403a) and the rod sleeve (403b) are respectively arranged in the notches inside the side plate two (402) and the clamping plate two (404).

5. A solid waste screening device according to claim 1, characterized in that: The chamber inside the dust suction hood (501) is communicated with the screening groove (101) of the screening box (1) through the box groove (103). The top of the dust suction hood (501) is provided with a hood opening (501a) for clamping the connecting plate (503), and the dust collection bag (502) is detachably fixed to the dust suction hood (501) through the mounting shaft (502a) at its shaft end.

6. The solid waste screening device according to claim 1, wherein: A sealing cover one (601b) is threadedly connected to the left side wall of the small screening cylinder (601) in the primary screening assembly (6), and a sealing cover two (701b) is also threadedly connected to the left end of the large screening cylinder (701) in the secondary screening assembly (7). A ring groove (701c-1) is formed on the inner wall of the sealing ring (701c) at the right end of the large screening cylinder (701), and a spring (701c-2) is adhered to the inner wall of the ring groove (701c-1). The other end of the spring (701c-2) is adhesively connected to the sealing plate (701c-3), and the sealing plate (701c-3) is slidably matched with the inner wall of the ring groove (701c-1). A soft rubber strip (701c-4) is also adhered to the side wall of the second sealing plate (701c-3).

7. The solid waste screening device according to claim 6, wherein: A total of four sealing plates (701c-3) are provided in the sealing ring (701c). The four sealing plates (701c-3) are arranged in a circular array structure. The sealing plates (701c-3) are in contact with each other through the soft rubber strips (701c-4) on their side walls, and the arc-shaped inner wall of the sealing plate (701c-3) is matched with the outer wall of the right end of the small screening cylinder (601).

8. A solid waste screening device according to claim 1, characterized in that: A small grooved pulley one (602c) is sleeved on the shaft end of the motor one (602a) in the driving member one (602). The small grooved pulley one (602c) is synchronously rotationally connected to the small grooved pulley two (602e) through a belt one (602d). The small grooved pulley two (602e) is sleeved on the outer wall of the right end of the small screening cylinder (601), and the motor one (602a) is also connected to the upper side wall of the screening box (1) through a frame one (602b).

9. The screening device for solid waste according to claim 1, characterized in that: A feed pipe (603a) is sleeved on the bottom side wall of the feed hopper (603). A pipe support (603b) is clamped at the bottom of the feed hopper (603). The pipe support (603b) is connected to the right side wall of the screening box (1). The outer wall of the other shaft end of the feed pipe (603a) is matched with the inner wall of the right end of the small screening cylinder (601), and the feed pipe (603a) is communicated with the small screening cylinder (601).

10. A solid waste screening device according to claim 1, characterized in that: A large sheave one (702c) is sleeved on the shaft end of a second motor (702a) in the second driving member (702), and the large sheave one (702c) is rotationally connected in synchronization with a large sheave two (702e) through a second belt (702d). The large sheave two (702e) is sleeved on the outer wall of the left end of a large screening cylinder (701), and the second motor (702a) is connected to the upper side wall of a screening box (1) through second frame members (702b) at both ends thereof.

Images