Cleaning and screening device for crushed plastic bottles

Abstract

The cleaning and screening device comprises a strip-shaped box body, a partition plate, a material pressing unit and a material pushing mechanism, the two ends of the strip-shaped box body are provided with a water inlet end and a water outlet end respectively, the top of the strip-shaped box body is provided with an opening, and the material pushing mechanism is assembled at the bottom of the box body. The material pressing unit comprises a limiting block lower than the bottom side of the partition plate, a horizontal rotating shaft attached to the partition plate and vertically connected with the partition plate in a sliding mode, and a material pressing piece fixedly connected with the rotating shaft. The driving mechanism is used for driving the material pressing piece to vertically move downwards and driving the material pressing piece to rotate downwards around the rotating shaft after the rotating shaft makes contact with the limiting block, and the elastic piece is used for pushing the material pressing piece to rotate around the rotating shaft to return to the original position. The material pressing unit is used for forcibly pressing the mixture floating on the water surface into water, so that the wettability of the mixture is improved, and the plastic sheet can sink to be separated from packaging paper and bottle caps.

Description

Technical Field

[0001] The utility model relates to the technical field related to plastic bottle recycling and processing, and in particular to a cleaning and screening device for crushing plastic bottles. Background Art

[0002] Plastic bottles are mainly made of materials such as polyethylene or polypropylene and added with a variety of organic solvents. Plastic bottles widely use polyester, polyethylene, and polypropylene as raw materials, add corresponding organic solvents, and then pass through plastic molds through blow molding, extrusion blow molding, or injection molding to form plastic containers after high temperature heating.

[0003] After recycling, plastic bottles must first be manually screened according to different requirements. For example, when blue and white materials need to be produced, it is necessary to screen out oil bottles, soy sauce bottles, dirty bottles, milk bottles and other bottles. Then the plastic bottles are sent to the label remover to remove the wrapping paper, and then sent to the crusher for crushing. After crushing, they are cleaned. During the cleaning process, secondary screening is also carried out to screen out the crushed materials of the bottle caps and residual wrapping paper, so as to output the plastic sheets of the bottle body, and then the plastic sheets of the bottle body can be dried for packaging, or the plastic sheets can be further processed and processed into plastic pellets for packaging.

[0004] In the prior art, when cleaning the mixture of crushed plastic flakes, bottle caps and wrapping paper, a spiral push rod arranged at the bottom of the box and the flow of water are used to push the mixture to move, and a rotating stirring arm is also arranged on the top of the box. The stirring arm can drive the floating material to float up and also can push the floating material floating on the water surface to move. However, each time the plastic bottle is crushed, there are many fragments, and there is a problem that the plastic flakes are not completely soaked. Due to the tension of the water, the plastic flakes of the bottle body cannot sink into the water. When separating the bottle caps and wrapping paper, a small amount of bottle body plastic flakes will be mixed in. Therefore, it is necessary to design a cleaning and screening device for crushed plastic bottles. Utility Model Content

[0005] In view of the above technical problems, the purpose of the utility model is to overcome the problem in the prior art that the plastic sheets of the bottle body are not completely soaked and float on the water surface during separation.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a cleaning and screening device for crushed plastic bottles, comprising: a strip-shaped box body with a water inlet and a water outlet at both ends and an opening at the top, a vertical partition plate arranged near the water inlet and with two sides respectively connected to two inner walls opposite to the box body, a material pressing unit vertically slidably mounted on one side of the partition plate near the water inlet, and a material pushing mechanism assembled at the bottom of the box body;

[0007] The partition is arranged near the water inlet end and the bottom part is inserted into the box body, the pressing unit includes a limit block installed on the inner wall of the box body and lower than the bottom side of the partition, a horizontal rotating shaft vertically slidably connected to the partition, a pressing piece fixedly connected to the rotating shaft, a driving mechanism for driving the pressing piece to move vertically downward and drive the pressing piece to rotate downward around the rotating shaft after the rotating shaft contacts the limit block, and an elastic piece for pushing the pressing piece to rotate around the rotating shaft to restore to its original position, and the edges of the bottom of the pressing piece away from the rotating shaft are protruding downward and are provided with intercepting parts.

[0008] Preferably, a horizontal extension plate is fixedly installed inside the box, and the side of the extension plate close to the water inlet end is in contact with the bottom of the partition, and the two side edges of the extension plate adjacent to the partition are respectively fixed to the opposite side walls of the box.

[0009] Preferably, the driving mechanism comprises a first mounting frame fixedly mounted on the box body, a vertical electric push rod fixedly mounted on the top of the first mounting frame, a slide frame vertically slidably connected to the partition, at least one first connecting rod hinged to the top of the slide frame through a first hinge shaft parallel to the rotating shaft, a limiting member mounted on the slide frame and connected to the first connecting rod, and a transmission member fixedly connected to the output end of the electric push rod and connected to the first connecting rod;

[0010] The end of the first connecting rod away from the slide is connected to a vertical second connecting rod through a second hinge axis parallel to the first hinge axis, and the lower end of the second connecting rod is hinged to the pressing piece through a third hinge axis parallel to the second hinge axis.

[0011] Preferably, the limiting member comprises an arc seat fixedly mounted on the slide and arranged coaxially with the first hinge shaft, and a limiting bolt fixedly mounted on the first connecting rod, and a limiting groove for the limiting bolt to pass through is coaxially arranged on the arc seat.

[0012] Preferably, the transmission component includes a connecting seat fixedly mounted on the first connecting rod, the connecting seat is penetrated by a strip slide groove whose length direction is parallel to the length direction of the first connecting rod, and the output end of the electric push rod is fixedly connected to a transmission rod with a circular cross-section that is parallel to the rotating shaft and slides through the strip slide groove.

[0013] Preferably, a debris collection unit is installed at the top end of the box body close to the water outlet;

[0014] The debris collection unit includes a collection frame which is hinged to the top side end of the box body through a fourth hinge axis parallel to the rotating axis, and the top and the side wall away from the fourth hinge axis are open, the bottom of the collection frame is provided with a plurality of drainage holes, the top of the collection frame is fixedly provided with a limiting portion which can contact the top of the box body, at least one limiting portion is equipped with a latch nose, the top of the box body is equipped with at least one latch matching the latch nose, and the open end of the collection frame away from the fourth hinge axis is equipped with an openable and closable control mechanism.

[0015] Preferably, the control mechanism includes a second mounting frame fixedly mounted on the top of the collection frame, an intercepting plate slidably connected to the second mounting frame through a plurality of guide rods and capable of moving close to the bottom of the collection frame, and a plurality of guide sleeves which are one-to-one mounted on the plurality of guide rods and fixedly mounted on the second mounting frame, at least one guide sleeve being threadedly mounted with a locking bolt whose end can abut against the guide rod.

[0016] Preferably, the elastic member is a torsion spring installed on the first hinge shaft, and two ends of the torsion spring are respectively in contact with the slide bracket and the first connecting rod.

[0017] Preferably, a material guide block is fixedly mounted on the top of the material pressing piece, and the top of the material guide block is inclined downward away from the side of the partition.

[0018] According to the above technical scheme, the utility model provides a device for cleaning and screening plastic bottles after crushing. The beneficial effects when in use are as follows: a mixture of crushed plastic sheets, bottle caps and wrapping paper of the bottle body is sent between the partition and the water inlet end, part of the mixture will sink into the water, but another part of the mixture will float on the surface of the water due to water tension, time and other reasons. The function of the pressing unit is to force the mixture floating on the water surface into the water, increase the wetness of the mixture, and facilitate the sinking of the plastic sheets and the separation from the wrapping paper and bottle caps.

[0019] Other features and advantages of the utility model will be described in detail in the subsequent specific implementation mode; and the parts not involved in the utility model are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0021] Figure 1 This is a three-dimensional structural diagram of a device for cleaning and screening plastic bottles after crushing provided by the utility model;

[0022] Figure 2It is a three-dimensional structural diagram of a material pressing unit and an extension plate of a device for cleaning and screening plastic bottles after crushing provided by the utility model;

[0023] Figure 3 It is a partial three-dimensional structural schematic diagram of a material pressing unit of a device for cleaning and screening plastic bottles after crushing provided by the present invention;

[0024] Figure 4 This utility model provides a cleaning and screening device for crushing and screening plastic bottles. Figure 3 The enlarged schematic diagram of point B in the middle;

[0025] Figure 5 This utility model provides a cleaning and screening device for crushing and screening plastic bottles. Figure 2 The enlarged schematic diagram of point A in the middle;

[0026] Figure 6 The utility model discloses a three-dimensional structural schematic diagram of a debris collection unit of a cleaning and screening device for crushing plastic bottles.

[0027] Description of Reference Numerals

[0028] 1. Water inlet; 2. Water outlet; 3. Box; 4. Partition; 5. Pushing mechanism; 6. Limiting block; 7. Rotating shaft; 8. Pressing piece; 9. Elastic piece; 10. Intercepting part; 11. Extension plate; 12. First mounting frame; 13. Electric push rod; 14. Slide; 15. First connecting rod; 16. Second connecting rod; 17. Arc seat; 18. Limiting bolt; 19. Limiting groove; 20. Connecting seat; 21. Strip slide; 22. Transmission rod; 23. Collecting frame; 24. Limiting part; 25. Second mounting frame; 26. Guide rod; 27. Intercepting plate; 28. Guide block. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0030] In the present utility model, unless otherwise stated, directional words such as "upper, lower, inside, outside" contained in a term merely represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0031] like Figure 1-6As shown, a device for cleaning and screening plastic bottles after crushing comprises: a strip-shaped box body 3 with a water inlet end 1 and a water outlet end 2 at both ends and an opening at the top, a vertical partition plate 4 arranged near the water inlet end 1 and with two sides respectively connected to the two inner walls opposite to the box body 3, a material pressing unit vertically slidably mounted on the side of the partition plate 4 near the water inlet end 1, and a material pushing mechanism 5 assembled at the bottom of the box body 3;

[0032] The partition 4 is arranged close to the water inlet end 1 and the bottom part is inserted into the box body 3. The pressing unit includes a limit block 6 installed on the inner wall of the box body 3 and lower than the bottom side of the partition 4, a horizontal rotating shaft 7 vertically slidably connected to the partition 4, a pressing piece 8 fixedly connected to the rotating shaft 7, a driving mechanism for driving the pressing piece 8 to move vertically downward and drive the pressing piece 8 to rotate downward around the rotating shaft 7 after the rotating shaft 7 contacts the limit block 6, and an elastic piece 9 for pushing the pressing piece 8 to rotate around the rotating shaft 7 to return to its original position. The bottom edge of the pressing piece 8 away from the rotating shaft 7 is protruding downward and is provided with an intercepting portion 10.

[0033] The pushing mechanism 5 is an existing mature technology, including a spiral pushing rod and a motor for driving the spiral pushing rod to rotate. The function of the spiral pushing rod is to push the plastic sheets deposited at the bottom of the box 3 close to the water outlet 2. Water enters from the water inlet 1 and is discharged from the water outlet 2. The formed water flow is also conducive to pushing the plastic sheets to move.

[0034] The mixture of crushed bottle plastic sheets, bottle caps and wrapping paper is fed between the partition 4 and the water inlet end 1. Part of the mixture will sink into the water, but the other part will float on the surface of the water due to water tension, time and other reasons. The function of the pressing unit is to force the mixture floating on the water surface into the water to increase the wetness of the mixture.

[0035] The initial position of the pressing piece 8 is higher than the top of the box body 3, that is, the initial position of the pressing piece 8 is higher than the water surface, so the mixture will float to the bottom of the pressing piece 8, and the driving mechanism drives the pressing piece 8 to move downward, and the slide 14 slides vertically downward on the partition 4. Because the rotating shaft 7 is in close contact with the partition 4, and the other three sides of the partition 4 are provided with flanges, the pressing piece 8 can press the mixture into the water when it moves downward, and when the rotating shaft 7 contacts the limit block 6, the output end of the driving mechanism continues to move downward, and the pressing piece 8 will rotate around the rotating shaft 7, so that the side of the pressing piece 8 away from the rotating shaft 7 moves downward, and the mixture inside the pressing piece 8 will slide out along the inclined direction of the top of the pressing piece 8, so that the mixture moves to the side of the partition 4 away from the water inlet end 1, and the flow of water is also conducive to the movement of the mixture to the side of the partition 4 away from the water inlet end 1.

[0036] After the mixture is immersed in water, it is helpful to separate the bottle caps and wrapping paper in the mixture. The bottle caps and wrapping paper will float to the water surface, while the plastic sheets will sink into the water.

[0037] A horizontal extension plate 11 is fixedly installed inside the box body 3. The side of the extension plate 11 close to the water inlet end 1 is in contact with the bottom of the partition 4. The two side edges of the extension plate 11 adjacent to the partition 4 are respectively fixed to the two opposite side walls of the box body 3.

[0038] The function of the extension plate 11 is to increase the contact time between the mixture and water. When the mixture moves to the side of the partition 4 away from the water inlet end 1, the mixture cannot float due to the action of the extension plate 11, thereby increasing the contact time with water and improving the wetness of the mixture, which is conducive to separating the bottle cap and the packaging paper.

[0039] The driving mechanism includes a first mounting frame 12 fixedly mounted on the box body 3, a vertical electric push rod 13 fixedly mounted on the top of the first mounting frame 12, a slide 14 vertically slidably connected to the partition 4, at least one first connecting rod 15 hinged to the top of the slide 14 through a first hinge axis parallel to the rotating shaft 7, a limiting member mounted on the slide 14 and connected to the first connecting rod 15, and a transmission member fixedly connected to the output end of the electric push rod 13 and connected to the first connecting rod 15;

[0040] The end of the first connecting rod 15 away from the slide 14 is connected to a vertical second connecting rod 16 via a second hinge axis parallel to the first hinge axis, and the lower end of the second connecting rod 16 is hinged to the pressing piece 8 via a third hinge axis parallel to the second hinge axis.

[0041] The slide 14, the first connecting rod 15, the second connecting rod 16 and the pressing piece 8 form a parallelogram structure. The electric push rod 13 applies pressure to the first connecting rod 15 through the transmission component. At this time, the first connecting rod 15 will transfer the pressure to the pressing piece 8 through the second connecting rod 16, the slide 14 and the rotating shaft 7, thereby driving the pressing piece 8 to move vertically downward; after the rotating shaft 7 contacts the limit block 6, pressure continues to be applied to the first connecting rod 15. At this time, the first connecting rod 15 rotates around the first hinge axis, and the pressing piece 8 rotates around the rotating shaft 7, the parallelogram structure is deformed, and the pressing piece 8 rotates and tilts so that the mixture moves from the pressing piece 8 to the side of the partition 4 away from the water inlet end 1.

[0042] When returning to its original position, the electric push rod 13 applies an upward pulling force to the first connecting rod 15 through the transmission component. Under the action of the elastic member 9, the first connecting rod 15 will rotate around the first hinge axis to return to its original position. The function of the limiting member is to control the reset position of the first connecting rod 15, thereby driving the pressing piece 8 to rotate, and continue to apply pulling force to the first connecting rod 15. The slide 14 slides vertically upward on the partition 4, which will drive the first connecting rod 15 and the pressing piece 8 to move upward to be above the water surface.

[0043] The limiting member includes an arc seat 17 fixedly mounted on the slide 14 and coaxially arranged with the first hinge shaft, and a limiting bolt 18 fixedly mounted on the first connecting rod 15. A limiting groove 19 for the limiting bolt 18 to pass through is coaxially arranged on the arc seat 17.

[0044] When the first connecting rod 15 rotates downward around the first hinge axis, it will drive the limit bolt 18 to move close to the slide 14 in the limit groove 19; when the electric push rod 13 applies a pulling force to the first connecting rod 15 through the transmission component, the elastic member 9 will push the first connecting rod 15 to rotate upward and return to its original position, thereby driving the limit bolt 18 to slide to the top of the limit groove 19.

[0045] The transmission component includes a connecting seat 20 fixedly mounted on the first connecting rod 15, and a strip-shaped slide groove 21 is provided on the connecting seat 20, and the length direction of the strip-shaped slide groove 21 is parallel to the length direction of the first connecting rod 15. The output end of the electric push rod 13 is fixedly connected with a transmission rod 22 with a circular cross-section that is parallel to the rotating shaft 7 and slides through the strip-shaped slide groove 21.

[0046] When the output end of the electric push rod 13 drives the transmission rod 22 to move downward, the transmission rod 22 applies pressure to the first connecting rod 15 through the connecting seat 20. After the rotating shaft 7 contacts the limit block 6, the transmission rod 22 continues to move downward. At this time, the transmission rod 22 will slide in the strip slide groove 21, and the first connecting rod 15 and the connecting seat 20 will rotate downward around the first hinge axis.

[0047] The top end of the box body 3 close to the water outlet 2 is equipped with a debris collection unit;

[0048] The debris collection unit includes a collection frame 23 which is hinged to the top end of the box body 3 through a fourth hinge axis parallel to the rotating shaft 7, and the top and the side wall away from the fourth hinge axis are open. The bottom of the collection frame 23 is provided with a plurality of drainage holes. The top of the collection frame 23 is fixedly provided with a limiting portion 24 which can contact the top of the box body 3, at least one limiting portion 24 is equipped with a latch nose, the top of the box body 3 is equipped with at least one latch matching the latch nose, and the open end of the collection frame 23 away from the fourth hinge axis is equipped with an openable and closable control mechanism.

[0049] Because the water flows from the water inlet 1 to the water outlet 2, coupled with the action of the pushing mechanism 5, the bottle caps and packaging paper floating on the water surface will also move closer to the water outlet 2, and the packaging paper and bottle caps floating on the water surface will move into the collecting frame 23 through the open side wall of the collecting frame 23 away from the fourth hinge axis, and the water will be discharged from the drainage hole.

[0050] When it is necessary to clean the collecting frame 23, the open end of the collecting frame 23 away from the fourth hinge axis is closed through the control mechanism, and the end of the latch is moved out of the latch nose. At this time, the collecting frame 23 can be rotated upward around the fourth hinge axis, and the water in the collecting frame 23 will be discharged from the drainage hole. After cleaning the collecting frame 23, the collecting frame 23 is rotated downward around the fourth hinge axis so that the bottom of the collecting frame 23 is lower than the water surface, and the end of the latch is inserted into the latch nose. Then the control mechanism is opened, so that the bottle caps and packaging paper floating on the water surface can be moved into the collecting frame 23.

[0051] The control mechanism includes a second mounting frame 25 fixedly mounted on the top of the collecting frame 23, an intercepting plate 27 slidably connected to the second mounting frame 25 through a plurality of guide rods 26 and capable of moving close to the bottom of the collecting frame 23, and a plurality of guide sleeves which are one-to-one correspondingly mounted on the plurality of guide rods 26 and fixedly mounted on the second mounting frame 25, at least one guide sleeve being threadedly mounted with a locking bolt whose end can abut against the guide rod 26.

[0052] By loosening the locking bolt, the guide rod 26 can slide on the guide sleeve, thereby driving the intercepting plate 27 to move downward to block the opening of the collection frame 23, or driving the intercepting plate 27 to move upward to open the opening of the collection frame 23, and then tightening the locking bolt to fix the relative position between the intercepting plate 27 and the collection frame 23.

[0053] The elastic member 9 is a torsion spring installed on the first hinge shaft, and two ends of the torsion spring are in contact with the slide 14 and the first connecting rod 15 respectively.

[0054] A material guide block 28 is fixedly mounted on the top of the material pressing piece 8 , and the top of the material guide block 28 is inclined downward away from the side of the partition plate 4 .

[0055] When the pressing piece 8 is removed from the water, part of the mixture will remain on the top of the pressing piece 8, so a guide block 28 is set on the top of the pressing piece 8. The function of the pressing piece 8 is to push the mixture floating on the top of the pressing piece 8 toward the water inlet end 1.

[0056] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0057] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0058] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A device for cleaning and screening plastic bottles after crushing, characterized in that: include: A strip-shaped box body (3) with a water inlet (1) and a water outlet (2) at both ends and an opening at the top, a vertical partition (4) arranged near the water inlet (1) and with two sides respectively connected to the two inner walls opposite to the box body (3), a material pressing unit vertically slidably mounted on one side of the partition (4) near the water inlet (1), and a material pushing mechanism (5) assembled at the bottom of the box body (3); The partition (4) is arranged near the water inlet end (1) and its bottom part is inserted into the box body (3). The pressing unit comprises a limit block (6) installed on the inner wall of the box body (3) and lower than the bottom side of the partition (4), a horizontal rotating shaft (7) vertically slidably connected to the partition (4), a pressing piece (8) fixedly connected to the rotating shaft (7), a driving mechanism for driving the pressing piece (8) to move vertically downward and drive the pressing piece (8) to rotate downward around the rotating shaft (7) after the rotating shaft (7) contacts the limit block (6), and an elastic piece (9) for pushing the pressing piece (8) to rotate around the rotating shaft (7) to return to its original position. The bottom edge of the pressing piece (8) away from the rotating shaft (7) is protruding downward and is provided with an intercepting portion (10).

2. A device for cleaning and screening plastic bottles after crushing according to claim 1, characterized in that: A horizontal extension plate (11) is fixedly installed inside the box body (3), and the side edge of the extension plate (11) close to the water inlet end (1) is in close contact with the bottom of the partition plate (4), and the two side edges of the extension plate (11) adjacent to the partition plate (4) are respectively in close contact with the two side walls opposite to the box body (3).

3. The device for cleaning and screening plastic bottles after crushing according to claim 1, characterized in that: The driving mechanism comprises a first mounting frame (12) fixedly mounted on the box body (3), a vertical electric push rod (13) fixedly mounted on the top of the first mounting frame (12), a slide frame (14) vertically slidably connected to the partition (4), at least one first connecting rod (15) hinged to the top of the slide frame (14) via a first hinge axis parallel to the rotating shaft (7), a limiting member mounted on the slide frame (14) and connected to the first connecting rod (15), and a transmission member fixedly connected to the output end of the electric push rod (13) and connected to the first connecting rod (15); The end of the first connecting rod (15) away from the slide (14) is connected to a vertical second connecting rod (16) via a second hinge axis parallel to the first hinge axis, and the lower end of the second connecting rod (16) is hinged to the pressing piece (8) via a third hinge axis parallel to the second hinge axis.

4. A device for cleaning and screening plastic bottles after crushing according to claim 3, characterized in that: The limiting component comprises an arc seat (17) fixedly mounted on the slide (14) and arranged coaxially with the first hinge shaft, and a limiting bolt (18) fixedly mounted on the first connecting rod (15); a limiting groove (19) for the limiting bolt (18) to pass through is arranged coaxially on the arc seat (17).

5. The device for cleaning and screening plastic bottles after crushing according to claim 3, characterized in that: The transmission component comprises a connection seat (20) fixedly mounted on a first connection rod (15); a strip-shaped slide groove (21) is provided through the connection seat (20) and its length direction is parallel to the length direction of the first connection rod (15); and a transmission rod (22) with a circular cross-section is fixedly connected to the output end of the electric push rod (13) and is parallel to the rotating shaft (7) and slides through the strip-shaped slide groove (21).

6. The device for cleaning and screening plastic bottles after crushing according to claim 1, characterized in that: The top end of the box body (3) close to the water outlet end (2) is equipped with a debris collection unit; The debris collection unit comprises a collection frame (23) which is hinged to the top side end of the box body (3) via a fourth hinge axis parallel to the rotating axis (7), and the top and the side wall away from the fourth hinge axis are both open, the bottom of the collection frame (23) is provided with a plurality of drainage holes, the top of the collection frame (23) is fixedly provided with a limiting portion (24) capable of contacting the top of the box body (3), at least one limiting portion (24) is equipped with a latch nose, the top of the box body (3) is equipped with at least one latch matching the latch nose, and the open end of the collection frame (23) away from the fourth hinge axis is equipped with an openable and closable control mechanism.

7. A device for cleaning and screening plastic bottles after crushing according to claim 6, characterized in that: The control mechanism comprises a second mounting frame (25) fixedly mounted on the top of the collecting frame (23), an intercepting plate (27) slidably connected to the second mounting frame (25) via a plurality of guide rods (26) and capable of moving close to the bottom of the collecting frame (23), and a plurality of guide sleeves which are sleeved on the plurality of guide rods (26) in a one-to-one correspondence and are all fixedly mounted on the second mounting frame (25), at least one of the guide sleeves being threadedly mounted with a locking bolt whose end can abut against the guide rod (26).

8. The device for cleaning and screening plastic bottles after crushing according to claim 3, characterized in that: The elastic member (9) is a torsion spring installed on the first hinge shaft, and two ends of the torsion spring are respectively in contact with the slide bracket (14) and the first connecting rod (15).

9. The device for cleaning and screening plastic bottles after crushing according to claim 1, characterized in that: A material guide block (28) is fixedly mounted on the top of the material pressing piece (8), and the top of the material guide block (28) is inclined downward away from the side of the partition plate (4).

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