Crushing, grading and screening equipment for solid waste and treatment process

Abstract

The invention discloses solid waste crushing, grading and screening equipment and a treatment process, and relates to the technical field of screening equipment. Step 2, crushing; and step 3, grading and screening. And after the waste is crushed by the crusher, the crushed waste is put into the drum screening machine to be screened. The drum screening machine comprises a base, a rotating drum is arranged above the base, the rotating drum is composed of an upper drum body and a lower drum body, the upper drum body and the lower drum body are respectively provided with screening holes with different hole diameters, and discharging hoppers are arranged below the upper drum body and the lower drum body. A material guide plate is arranged at the end, away from the upper cylinder body, of the lower cylinder body, and the upper cylinder body and the lower cylinder body are installed through an installation mechanism. According to the screening machine, by arranging the mounting mechanism, the roller can be conveniently and rapidly disassembled and assembled, and the size of the screening holes in the screening machine can be conveniently adjusted by replacing the roller.

Description

Technical Field

[0001] The present invention relates to the technical field of screening equipment, and specifically to a crushing, grading and screening equipment for solid waste and a treatment process. Background Art

[0002] Solid waste refers to solid and semi-solid waste substances generated by humans in production, consumption, life and other activities. Due to the huge output of solid waste, the random stacking of solid waste will damage the natural ecological environment, occupy a large amount of land resources, and affect the habitats and living spaces of animals and plants. Through scientific treatment methods, such as garbage classification, recycling and harmless treatment, the occupation of land by solid waste can be reduced, and the integrity of the ecosystem and biodiversity can be protected.

[0003] In the solid waste treatment process, crushing and classified recycling are important treatment links. Especially after crushing, grading and screening are required, and at this time, a drum screening machine needs to be used. When using the drum screening machine, objects are filtered and screened through the sieve holes on the drum. However, when adjusting the size of the sieve holes, the whole screening machine needs to be disassembled to disassemble and replace the drum with different sieve hole diameters, and the operation is relatively complicated. In order to achieve the purpose of facilitating the replacement of the drum to adjust the sieve hole diameter, and then achieve the effect of improving the crushing, grading and screening efficiency of solid waste, a crushing, grading and screening equipment for solid waste and a treatment process are provided. Summary of the Invention

[0004] The purpose of the present invention is to provide a crushing, grading and screening equipment for solid waste and a treatment process to achieve the purpose of facilitating the replacement of the drum.

[0005] To achieve the above object, the present invention provides the following technical solution: A crushing, grading and screening device for solid waste, comprising a crusher and a drum screening machine. The drum screening machine includes a base, and a rotating cylinder is arranged above the base. The rotating cylinder is composed of an upper cylinder body and a lower cylinder body. The upper cylinder body and the lower cylinder body are respectively provided with sieve holes with different apertures. Discharge hoppers are arranged below both the upper cylinder body and the lower cylinder body. A guide plate is arranged at one end of the lower cylinder body away from the upper cylinder body. The upper cylinder body and the lower cylinder body are installed through an installation mechanism; The installation mechanism includes a toothed ring and a support ring. The toothed ring and the support ring are respectively fixedly connected to the ends of the upper cylinder body and the lower cylinder body away from each other. Docking rings are fixedly connected to both ends of the upper cylinder body and the lower cylinder body close to each other. An activity groove is opened at the top end of the base, and an activity seat is slidably connected to the inner wall of the activity groove. A first motor is installed at one end of the base, and the output end of the first motor is connected to a first threaded rod. The first threaded rod penetrates through the activity seat. The top end of the activity seat is fixedly connected to a first support seat, and a first support groove is opened at the top end of the first support seat. The top end of the base is fixedly connected to a second support seat, and a second support groove is opened at the top end of the second support seat.

[0006] As a further solution of the present invention: The installation mechanism further includes two docking seats, and the two docking seats are respectively fixedly connected to the top ends of the activity seat and the base. A connection groove is opened at the top end of the docking seat. A second motor is installed on the outer wall of the second support seat, and the output end of the second motor is connected to a spur gear. The spur gear extends into the inner cavity of the second support groove. A plug rod is fixedly connected to one end of the upper cylinder body facing the lower cylinder body, and a jack is opened at one end of the lower cylinder body facing the upper cylinder body. One of the discharge hoppers is fixedly connected to the base, and the other discharge hopper is fixedly connected to the activity seat. The guide plate is fixedly connected to the first support seat. Reinforcement operations are carried out between the two docking seats through a reinforcement mechanism.

[0007] As a further solution of the present invention: The reinforcement mechanism includes an annular groove, which is opened on the outer wall of the docking ring. Installation plates are symmetrically and fixedly connected to the top end of the base. A rotating block is rotatably connected to the outer wall of the installation plate. A second threaded rod is fixedly connected between the two rotating blocks. Displacement plates are symmetrically slidably connected to the outer wall of the second threaded rod. A C-shaped positioning frame is fixedly connected to the outer wall of the displacement plate. Connection frames are symmetrically and fixedly connected to the top end of the positioning frame. A sliding rod is fixedly connected to the top end of the connection frame.

[0008] As a further aspect of the present invention: The reinforcement mechanism further includes an arc-shaped plate, which is slidably connected to the inside of the docking seat. The arc-shaped plate extends to the inner wall of the connection groove. The bottom end of the arc-shaped plate is fixedly connected with a displacement block. The bottom end of the displacement block is rotatably connected with a connecting rod. The bottom end of the connecting rod is rotatably connected with a pushing frame. The pushing frame is slidably connected to the inside of the docking seat and extends out of both sides of the docking seat. Transverse grooves are symmetrically formed on both sides of the pushing frame, and an inclined groove is formed at one end of the transverse groove.

[0009] As a further aspect of the present invention: The outer wall of the insertion rod fits with the inner wall of the insertion hole. Tooth grooves are formed on the outer wall of the tooth ring, and the tooth grooves are meshed with the straight gear.

[0010] As a further aspect of the present invention: The outer wall of the tooth ring fits with the inner wall of the second support groove. The inner wall of the first support groove fits with the outer wall of the support ring. The inner wall of the connection groove fits with the outer wall of the docking ring.

[0011] As a further aspect of the present invention: The inner wall of the movable groove fits with the outer wall of the movable seat. A first threaded hole is formed on the outer wall of the movable seat, and the first threaded hole matches the first threaded rod.

[0012] As a further aspect of the present invention: A second threaded hole is formed on the outer wall of the displacement plate. External threads are symmetrically arranged on the outer wall of the second threaded rod, and the external threads match the second threaded hole. The inner wall of the positioning frame fits with the outer walls of the two docking seats.

[0013] As a further aspect of the present invention: The inner wall of the annular groove fits with the outer wall of the arc-shaped plate. The inner walls of the transverse groove and the inclined groove fit with the outer wall of the sliding rod.

[0014] A crushing, grading and screening treatment process for solid waste includes the following steps: Step 1: Pretreatment; Sort out and remove non-crushable items, remove magnetic metal substances in the waste by magnetic separation, separate and remove light materials by a pneumatic separator, and then obtain the pretreated waste. Step 2: Crushing; Use a jaw crusher to initially crush the waste pretreated in Step 1; Use a counterattack crusher to perform secondary crushing on the coarsely crushed material. Step 3: Grading and screening; Pass the crushed waste through a drum screen to separate impurities from the material, and collect the material by particle size after multi-stage screening.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up the installation mechanism, when disassembling the upper cylinder body and the lower cylinder body, the first motor operates to drive the movable seat to displace. The displacement of the movable seat drives the upper cylinder body and the lower cylinder body to move away from each other until the insertion rod moves out of the insertion hole. At this time, the upper cylinder body and the lower cylinder body can be disassembled and replaced separately. This design facilitates the rapid disassembly and installation of the drum, and by replacing the drum, it is convenient to adjust the size of the sieve holes on the screening machine.

[0016] 2. By setting up the reinforcement mechanism, after the two docking seats are fitted together, the rotating block can be rotated to drive the positioning frame to displace, so that the two docking seats enter the inner wall of the positioning frame, thereby strengthening the tight fit between the docking seats and preventing the upper cylinder body and the lower cylinder body from moving away from each other. At the same time, the sliding rod slides along the transverse groove and enters the inclined groove. The sliding of the sliding rod in the inclined groove drives the pushing frame to displace, and the arc-shaped plate displaces into the annular groove, which is convenient for strengthening the upper cylinder body and the lower cylinder body and preventing the upper cylinder body and the lower cylinder body from loosening during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is an installation schematic diagram of the upper cylinder body and the lower cylinder body of the present invention; Figure 3 is a schematic diagram of the internal structure of the base of the present invention; Figure 4 is a schematic diagram of the internal structure of the upper cylinder body and the lower cylinder body of the present invention; Figure 5 is an installation schematic diagram of the positioning frame of the present invention; Figure 6 is a schematic diagram of the internal structure of the docking seat of the present invention; Figure 7 is a schematic structural diagram of the pushing frame of the present invention.

[0018] In the figure: 1. Base; 2. Upper cylinder body; 3. Lower cylinder body; 4. Sieve holes; 5. Discharge hopper; 6. Guide plate; 7. Installation mechanism; 701. Tooth ring; 702. Support ring; 703. Docking ring; 704. Movable groove; 705. Movable seat; 706. First motor; 707. First threaded rod; 708. First support seat; 709. First support groove; 710. Second support seat; 711. Second support groove; 712. Second motor; 713. Straight gear; 714. Docking seat; 715. Connection groove; 716. Insertion rod; 717. Insertion hole; 8. Reinforcement mechanism; 801. Annular groove; 802. Installation plate; 803. Rotating block; 804. Second threaded rod; 805. Displacement plate; 806. Positioning frame; 807. Connection frame; 808. Sliding rod; 809. Arc-shaped plate; 810. Displacement block; 811. Connecting rod; 812. Pushing frame; 813. Transverse groove; 814. Inclined groove. Detailed implementation manners

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The embodiments of the present invention will be described below according to its overall structure.

[0021] In an embodiment of the present invention, a crushing, grading and screening treatment process for solid waste is as follows: Step 1: Pretreatment; Sort out and remove non-crushable items, use magnetic separation to remove magnetic metal substances in the waste, use an air separator to separate and remove light materials, and then obtain the pretreated waste. Step 2: Crushing; Use a jaw crusher to preliminarily crush the waste pretreated in Step 1; use a counterattack crusher to perform secondary crushing on the coarsely crushed material. Step 3: Grading and screening; Pass the crushed waste through a drum screen to separate impurities from the material, and collect the material by particle size after multi-stage screening.

[0022] Please refer to Figures 1 to 7, a crushing, classifying and screening device for solid waste, including a crusher and a drum screen. The drum screen used in step three includes a base 1, above which a rotating cylinder is arranged. The rotating cylinder consists of an upper cylinder body 2 and a lower cylinder body 3. Screen holes 4 with different apertures are respectively arranged on the upper cylinder body 2 and the lower cylinder body 3. Discharge hoppers 5 are arranged below both the upper cylinder body 2 and the lower cylinder body 3. A guide plate 6 is arranged at one end of the lower cylinder body 3 away from the upper cylinder body 2. The upper cylinder body 2 and the lower cylinder body 3 are installed through an installation mechanism 7.

[0023] In this embodiment: After the waste is crushed by the crusher, the crushed waste is then put into the drum screen for screening. First, the waste is poured into the upper cylinder body 2, and the waste travels sequentially along the upper cylinder body 2, the lower cylinder body 3 and the guide plate 6. The waste is screened through the screen holes 4. The smaller waste moves out of the rotating cylinder through the screen holes 4 and falls into the discharge hopper 5 and is discharged through the discharge hopper 5.

[0024] Please refer specifically to Figures 1 to 4 , the installation mechanism 7 includes a toothed ring 701 and a support ring 702. The toothed ring 701 and the support ring 702 are respectively fixedly connected to one end of the upper cylinder body 2 and the lower cylinder body 3 away from each other. Docking rings 703 are fixedly connected to one end of the upper cylinder body 2 and the lower cylinder body 3 close to each other. An activity groove 704 is opened at the top end of the base 1. An activity seat 705 is slidably connected to the inner wall of the activity groove 704. A first motor 706 is installed at one end of the base 1. The output end of the first motor 706 is connected to a first threaded rod 707. The first threaded rod 707 penetrates through the activity seat 705. A first support seat 708 is fixedly connected to the top end of the activity seat 705. A first support groove 709 is opened at the top end of the first support seat 708. A second support seat 710 is fixedly connected to the top end of the base 1. A second support groove 711 is opened at the top end of the second support seat 710. The installation mechanism 7 further includes two docking seats 714. The two docking seats 714 are respectively fixedly connected to the top end of the activity seat 705 and the base 1. A connection groove 715 is opened at the top end of the docking seat 714. A second motor 712 is installed on the outer wall of the second support seat 710. The output end of the second motor 712 is connected to a spur gear 713. The spur gear 713 extends into the inner cavity of the second support groove 711. A plug rod 716 is fixedly connected to one end of the upper cylinder body 2 facing the lower cylinder body 3. A jack 717 is opened at one end of the lower cylinder body 3 facing the upper cylinder body 2. One discharge hopper 5 is fixedly connected to the base 1, and the other discharge hopper 5 is fixedly connected to the activity seat 705. The guide plate 6 is fixedly connected to the first support seat 708. The two docking seats 714 are reinforced through a reinforcement mechanism 8.

[0025] In this embodiment, when driving the upper cylinder body 2 and the lower cylinder body 3 to rotate, the second motor 712 is started. The operation of the second motor 712 drives the spur gear 713 to rotate. The rotation of the spur gear 713 drives the toothed ring 701 to rotate. The rotation of the toothed ring 701 drives the upper cylinder body 2 to rotate. The rotation of the upper cylinder body 2 drives the lower cylinder body 3 to rotate synchronously through the insertion rod 716.

[0026] When installing the upper cylinder body 2 and the lower cylinder body 3, the upper cylinder body 2 and the lower cylinder body 3 are respectively moved to the tops of the base 1 and the movable seat 705. The toothed ring 701 enters the second support groove 711, the support ring 702 enters the first support groove 709, and the docking ring 703 enters the connection groove 715. At this time, the upper cylinder body 2 can rotate on the tops of the second support seat 710 and the docking seat 714, and the lower cylinder body 3 can rotate on the tops of the docking seat 714 and the first support seat 708. Align the insertion rod 716 and the insertion hole 717. Then, start the first motor 706. The operation of the first motor 706 drives the first threaded rod 707 to rotate. The rotation of the first threaded rod 707 drives the movable seat 705 to slide in the movable groove 704. The displacement of the movable seat 705 drives the lower cylinder body 3 to displace. When the two docking seats 714 are in contact with each other, the upper cylinder body 2 and the lower cylinder body 3 are in contact. The insertion rod 716 is inserted into the insertion hole 717, and the docking installation of the upper cylinder body 2 and the lower cylinder body 3 is completed.

[0027] When disassembling the upper cylinder body 2 and the lower cylinder body 3, only need to start the first motor 706. The operation of the first motor 706 drives the movable seat 705 to displace. The displacement of the movable seat 705 drives the upper cylinder body 2 and the lower cylinder body 3 to move away from each other until the insertion rod 716 moves out of the insertion hole 717. At this time, the upper cylinder body 2 and the lower cylinder body 3 can be disassembled and replaced separately. This design facilitates the rapid disassembly and installation of the drum, and the adjustment of the size of the sieve holes 4 on the screening machine is facilitated by replacing the drum.

[0028] Please refer specifically to Figures 4 to 7, the reinforcement mechanism 8 includes an annular groove 801 which is opened on the outer wall of the docking ring 703. Symmetrically fixed to the top end of the base 1 are mounting plates 802. Rotatably connected to the outer walls of the mounting plates 802 are rotating blocks 803. Fixedly connected between the two rotating blocks 803 is a second threaded rod 804. Symmetrically slidably connected to the outer wall of the second threaded rod 804 are displacement plates 805. Fixedly connected to the outer wall of the displacement plate 805 is a C-shaped positioning frame 806. Symmetrically fixed to the top end of the positioning frame 806 are connecting frames 807. Fixedly connected to the top end of the connecting frame 807 is a sliding rod 808. The reinforcement mechanism 8 further includes an arc-shaped plate 809 which is slidably connected inside the docking seat 714. The arc-shaped plate 809 extends to the inner wall of the connecting groove 715. Fixedly connected to the bottom end of the arc-shaped plate 809 is a displacement block 810. Rotatably connected to the bottom end of the displacement block 810 is a connecting rod 811. Rotatably connected to the bottom end of the connecting rod 811 is a pushing frame 812. The pushing frame 812 is slidably connected inside the docking seat 714 and extends out of both sides of the docking seat 714. Symmetrically opened on both sides of the pushing frame 812 are transverse grooves 813. At one end of the transverse groove 813 is an inclined groove 814.

[0029] In this embodiment: When the two docking seats 714 are completely fitted, the rotating block 803 can be rotated. The rotation of the rotating block 803 drives the second threaded rod 804 to rotate. The rotation of the second threaded rod 804 drives the two displacement plates 805 to move in opposite directions. The displacement of the displacement plates 805 drives the positioning frame 806 to move, so that the two docking seats 714 enter the inner wall of the positioning frame 806, thereby strengthening the tight fit between the docking seats 714 and preventing the upper cylinder body 2 and the lower cylinder body 3 from moving away from each other. At the same time, during the displacement of the positioning frame 806, it drives the connecting frame 807 to move. The displacement of the connecting frame 807 drives the sliding rod 808 to move. The sliding rod 808 moves into the transverse groove 813 and slides along the transverse groove 813 into the inclined groove 814. The sliding of the sliding rod 808 in the inclined groove 814 drives the pushing frame 812 to move. The displacement of the pushing frame 812 drives the displacement block 810 to move through the connecting rod 811. The displacement of the displacement block 810 drives the arc-shaped plate 809 to move. The arc-shaped plate 809 moves into the annular groove 801. When the upper cylinder body 2 and the lower cylinder body 3 rotate, the arc-shaped plate 809 can slide in the annular groove 801, thereby preventing the upper cylinder body 2 and the lower cylinder body 3 from loosening during rotation. This design facilitates the reinforcement operation of the upper cylinder body 2 and the lower cylinder body 3 and prevents the upper cylinder body 2 and the lower cylinder body 3 from loosening during use.

[0030] Please refer specifically to Figures 1 to 4 , the outer wall of the insertion rod 716 fits with the inner wall of the insertion hole 717. Tooth grooves are opened on the outer wall of the gear ring 701, and the tooth grooves are engaged with the spur gear 713.

[0031] In this embodiment: when the upper cylinder body 2 and the lower cylinder body 3 are connected, the insertion rod 716 is inserted into the insertion hole 717; the second motor 712 operates to drive the spur gear 713 to rotate, the spur gear 713 rotates to drive the toothed ring 701 to rotate, the toothed ring 701 rotates to drive the upper cylinder body 2 to rotate, and the rotation of the upper cylinder body 2 drives the lower cylinder body 3 to rotate synchronously through the insertion rod 716.

[0032] Please refer specifically to Figures 1 to 4 , the outer wall of the toothed ring 701 fits with the inner wall of the second support groove 711, the inner wall of the first support groove 709 fits with the outer wall of the support ring 702, and the inner wall of the connection groove 715 fits with the outer wall of the docking ring 703.

[0033] In this embodiment: when installing the upper cylinder body 2 and the lower cylinder body 3, the upper cylinder body 2 and the lower cylinder body 3 are respectively moved to the tops of the base 1 and the movable seat 705, the toothed ring 701 enters the second support groove 711, the support ring 702 enters the first support groove 709, and the docking ring 703 enters the connection groove 715. At this time, the upper cylinder body 2 can rotate on the tops of the second support seat 710 and the docking seat 714, and the lower cylinder body 3 can rotate on the tops of the docking seat 714 and the first support seat 708.

[0034] Please refer specifically to Figures 1 to 4 , the inner wall of the movable groove 704 fits with the outer wall of the movable seat 705, and the outer wall of the movable seat 705 is provided with a first threaded hole, and the first threaded hole matches the first threaded rod 707.

[0035] In this embodiment: the first motor 706 operates to drive the first threaded rod 707 to rotate, the first threaded rod 707 rotates to drive the movable seat 705 to slide in the movable groove 704, the displacement of the movable seat 705 drives the lower cylinder body 3 to displace. When the two docking seats 714 are in contact, the upper cylinder body 2 and the lower cylinder body 3 are in contact, and the insertion rod 716 is inserted into the insertion hole 717 to complete the installation of the upper cylinder body 2 and the lower cylinder body 3.

[0036] Please refer specifically to Figures 4 to 7 , the outer wall of the displacement plate 805 is provided with a second threaded hole, the outer wall of the second threaded rod 804 is symmetrically provided with an external thread, and the external thread matches the second threaded hole. The inner wall of the positioning frame 806 fits with the outer walls of the two docking seats 714.

[0037] In this embodiment: rotate the rotating block 803, the rotation of the rotating block 803 drives the second threaded rod 804 to rotate, the rotation of the second threaded rod 804 drives the two displacement plates 805 to displace in the opposite direction, and the displacement of the displacement plates 805 drives the positioning frame 806 to displace, so that the two docking seats 714 enter the inner wall of the positioning frame 806, thereby strengthening the close contact between the docking seats 714.

[0038] Please refer specifically to Figures 4 to 7 , the inner wall of the annular groove 801 fits against the outer wall of the arc-shaped plate 809, and the inner walls of the horizontal groove 813 and the inclined groove 814 fit against the outer wall of the sliding rod 808.

[0039] In this embodiment: During the displacement of the positioning frame 806, the connecting frame 807 is driven to displace. The displacement of the connecting frame 807 drives the sliding rod 808 to displace. The sliding rod 808 displaces into the horizontal groove 813 and slides along the horizontal groove 813 into the inclined groove 814. The sliding rod 808 slides in the inclined groove 814, driving the pushing frame 812 to displace. The displacement of the pushing frame 812 drives the displacement block 810 to displace through the connecting rod 811. The displacement of the displacement block 810 drives the arc-shaped plate 809 to displace. The arc-shaped plate 809 displaces into the annular groove 801. When the upper cylinder body 2 and the lower cylinder body 3 rotate, the arc-shaped plate 809 can slide in the annular groove 801.

[0040] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A crushing, classifying and screening device for solid waste, comprising a crusher and a drum screen, characterized in that, The drum sieve includes a base (1). Above the base (1), there is a rotating cylinder, which is composed of an upper cylinder body (2) and a lower cylinder body (3). The upper cylinder body (2) and the lower cylinder body (3) are respectively provided with sieve holes (4) with different pore diameters. Below the upper cylinder body (2) and the lower cylinder body (3), there are discharge hoppers (5). At one end of the lower cylinder body (3) away from the upper cylinder body (2), there is a guide plate (6). The upper cylinder body (2) and the lower cylinder body (3) are installed through an installation mechanism (7); the installation mechanism (7) includes a toothed ring (701) and a support ring (702). The toothed ring (701) and the support ring (702) are respectively fixedly connected to the ends of the upper cylinder body (2) and the lower cylinder body (3) that are away from each other. At the ends of the upper cylinder body (2) and the lower cylinder body (3) that are close to each other, there are docking rings (703) fixedly connected. At the top of the base (1), there is an activity groove (704). The inner wall of the activity groove (704) is slidably connected to an activity seat (705). At one end of the base (1), there is a first motor (706). The output end of the first motor (706) is connected to a first threaded rod (707). The first threaded rod (707) penetrates through the activity seat (705). The top of the activity seat (705) is fixedly connected to a first support seat (708). At the top of the first support seat (708), there is a first support groove (709). At the top of the base (1), there is a second support seat (710). At the top of the second support seat (710), there is a second support groove (711).

2. The crushing, classifying and screening equipment for solid waste according to claim 1, wherein The installation mechanism (7) further includes two docking seats (714). The two docking seats (714) are respectively fixedly connected to the top of the activity seat (705) and the base (1). At the top of the docking seat (714), there is a connection groove (715). On the outer wall of the second support seat (710), there is a second motor (712). The output end of the second motor (712) is connected to a spur gear (713). The spur gear (713) extends into the inner cavity of the second support groove (711). At the end of the upper cylinder body (2) facing the lower cylinder body (3), there is a plug rod (716) fixedly connected. At the end of the lower cylinder body (3) facing the upper cylinder body (2), there is a jack (717). One discharge hopper (5) is fixedly connected to the base (1), and the other discharge hopper (5) is fixedly connected to the activity seat (705). The guide plate (6) is fixedly connected to the first support seat (708). Between the two docking seats (714), a reinforcement mechanism (8) is used for reinforcement operation.

3. A crushing, classifying and screening device for solid waste according to claim 2, characterized in that, The reinforcement mechanism (8) includes an annular groove (801) opened on the outer wall of the docking ring (703). The top of the base (1) is symmetrically and fixedly connected with mounting plates (802). The outer wall of the mounting plate (802) is rotationally connected with rotating blocks (803). A second threaded rod (804) is fixedly connected between the two rotating blocks (803). The outer wall of the second threaded rod (804) is symmetrically and slidably connected with displacement plates (805). The outer wall of the displacement plate (805) is fixedly connected with a C-shaped positioning frame (806). The top of the positioning frame (806) is symmetrically and fixedly connected with connecting frames (807). The top of the connecting frame (807) is fixedly connected with a sliding rod (808).

4. The crushing, classifying and screening equipment for solid waste according to claim 3, characterized in that, The reinforcement mechanism (8) further includes an arc-shaped plate (809) slidably connected inside the docking seat (714). The arc-shaped plate (809) extends to the inner wall of the connecting groove (715). The bottom end of the arc-shaped plate (809) is fixedly connected with a displacement block (810). The bottom end of the displacement block (810) is rotationally connected with a connecting rod (811). The bottom end of the connecting rod (811) is rotationally connected with a pushing frame (812). The pushing frame (812) is slidably connected inside the docking seat (714) and extends out of both sides of the docking seat (714). Transverse grooves (813) are symmetrically opened on both sides of the pushing frame (812). An inclined groove (814) is opened at one end of the transverse groove (813).

5. The crushing, classifying and screening equipment for solid waste according to claim 2, wherein The outer wall of the insertion rod (716) fits with the inner wall of the insertion hole (717). Tooth grooves are opened on the outer wall of the toothed ring (701), and the tooth grooves are meshed with the spur gear (713).

6. The crushing, classifying and screening equipment for solid waste according to claim 2, characterized in that, The outer wall of the toothed ring (701) fits with the inner wall of the second support groove (711). The inner wall of the first support groove (709) fits with the outer wall of the support ring (702). The inner wall of the connecting groove (715) fits with the outer wall of the docking ring (703).

7. A crushing, classifying and screening device for solid waste according to claim 2, characterized in that, The inner wall of the movable groove (704) fits with the outer wall of the movable seat (705). A first threaded hole is opened on the outer wall of the movable seat (705), and the first threaded hole matches the first threaded rod (707).

8. A crushing, classifying and screening device for solid waste according to claim 4, characterized in that, A second threaded hole is opened on the outer wall of the displacement plate (805). External threads are symmetrically arranged on the outer wall of the second threaded rod (804), and the external threads match the second threaded hole. The inner wall of the positioning frame (806) fits with the outer walls of the two docking seats (714).

9. The crushing, grading and screening equipment for solid waste according to claim 4, wherein, The inner wall of the annular groove (801) fits with the outer wall of the arc-shaped plate (809). The inner walls of the transverse groove (813) and the inclined groove (814) fit with the outer wall of the sliding rod (808).

10. The treatment process of a crushing, grading and screening device for solid waste according to any one of claims 1-9, characterized in that, The specific steps are as follows: Step 1: Pretreatment; Sort and remove non-crushable items, use magnetic separation to remove magnetic metal substances in the waste, use a winnowing machine to separate and remove light materials, and then obtain the pretreated waste; Step 2: Crushing; Use a jaw crusher to preliminarily crush the waste pre-treated in Step 1; Use a counterattack crusher to perform secondary crushing on the coarsely crushed material. Step 3: Classification and screening; Separate impurities from the crushed waste through a rotary screen, and collect them by particle size after multi-stage screening.

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