Crushing device for plastic recycling

Abstract

The invention provides a crushing device for plastic recycling, and relates to the technical field of plastic processing, the crushing device comprises a box body, a crushing part, a screening part, an auxiliary part, a driving part, a feeding part and a cleaning part; the box body is of a rectangular box-shaped structure, and two fixing bases are symmetrically welded to the box body. Each fixing base is provided with two rolling wheels, and the four rolling wheels make contact with the ground. The tail end of the handle is in elastic contact with the fixing seat, and the fixing seat and the handle jointly form a friction type locking structure of the collecting box, so that the locking structure of the collecting box does not need to be independently arranged, and compared with an existing device, the collecting box does not need an independent locking structure, operation is simpler, and the cost is lower. The problem that in the crushing process of an existing device, plastic is usually crushed through crushing pieces or crushing rollers, the crushed plastic is in a long strip shape, and consequently the size of the plastic is still large is solved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing, in particular to a crushing device for recycling plastic. Background Art

[0002] Plastic is an important organic synthetic polymer material with a wide range of applications. For example, in the processing of biomedical consumables such as PCR plates, culture dishes or pipette tips, etc. When recycling plastics, it is necessary to use a crushing device to crush the plastics, and then treat them through disinfection and other means until they meet the requirements for reuse.

[0003] However, as far as the current traditional plastic crushing devices are concerned, firstly, the existing devices often use crushing pieces or crushing rollers to crush the plastic during the crushing process. At this time, the plastic will be in long strips after being crushed, which causes the size of the plastic to be still large; secondly, the existing devices will be provided with a collection box for collecting dirt and other debris on the plastic, but the collection box needs to be separately provided with a locking switch. When taking the collection box, the locking switch needs to be opened first, and the operation is cumbersome; finally, although the existing devices will be provided with a partition structure to separate large pieces of plastic, the partition structure only plays a partitioning role and cannot play other roles. Summary of the invention

[0004] In view of this, the present invention provides a crushing device for recycling plastics, which has a crushing part. Through the action of the cutter and the partition block in the crushing part, the plastic can be segmented while being crushed, thereby avoiding the phenomenon of long strips of plastic, and improving the crushing efficiency. It also has a fixing seat and a handle. Through the setting of the fixing seat and the handle, on the one hand, the roller can be installed through the fixing seat, and on the other hand, the friction locking of the collection box can be achieved through the cooperation of the fixing seat and the handle. It also has a screening part. Through the arrangement of the screening plate in the screening part, on the one hand, it can realize the screening of large pieces of plastic, and then cooperate with the cleaning part to realize the removal of large pieces of plastic, so as to facilitate the subsequent re-crushing; on the other hand, through the cooperation of the screening plate and the auxiliary part, the plastic can be crushed again, thus improving the crushing effect of the plastic.

[0005] The present invention provides a crushing device for recycling plastics, which specifically comprises: a box body, a crushing part, a screening part, an auxiliary part, a driving part, a feeding part and a cleaning part; the box body is a rectangular box-shaped structure, and two fixing seats are symmetrically welded on the box body; two rollers are installed on each fixing seat, and the four rollers are in contact with the ground; a collecting box is inserted in the box body, and a handle is installed on the collecting box; the handle is an L-shaped bent rod structure, and the tail end of the handle is polished, and the tail end of the handle after polishing is a hemispherical structure; the tail end of the handle is in elastic contact with the fixing seat, and the fixing seat and the handle together form a friction locking structure of the collecting box; the crushing part is composed of a rotating shaft A, a crushing The invention relates to a machine tool comprising a plate A, a partition block, a rotating shaft B, a crushing plate B, a cutter, a gear and a driving motor, and the rotating shaft A is rotatably connected to the box body; the screening part is composed of a mounting rod and a screening plate, and there are two mounting rods, and both mounting rods are installed on the box body; the auxiliary part is composed of a sliding rod, a collecting plate, an elastic member, a protrusion and a sieve hole B, and there are four sliding rods, and the four sliding rods are fixedly connected to the box body by bolts; the driving part is composed of a rotating shaft C and a toggle block, and the rotating shaft C is rotatably connected to the box body; the feeding part is composed of a baffle, a protective shell and a door panel, and there are two baffles; the cleaning part is composed of a pull rod and a cleaning plate, and the pull rod is slidably connected to the box body.

[0006] Optionally, a sieve plate is fixedly connected to the box body by bolts, and the sieve plate is provided with sieve holes A in a rectangular array, and the sieve plate is arranged in an inclined state.

[0007] Optionally, ten crushing pieces A are fixed to the rotating shaft A by bolts, and a partition block is clamped between each two adjacent crushing pieces A.

[0008] Optionally, the rotating shaft B is rotatably connected to the box body, and ten crushing pieces B are fixed to the rotating shaft B by bolts; a cutter is clamped between two adjacent crushing pieces B, and the cutter is in contact with the partition block; The box body is fixedly connected with a driving motor by bolts, and the rotating shaft of the driving motor is connected to the rotating shaft B; Gears are installed on both the rotating shaft A and the rotating shaft B, and the two gears are meshed with each other.

[0009] Optionally, screening plates are bolted to the two mounting rods in a linear array, and the screening plates bolted to the two mounting rods together form a screening structure for the plastic after preliminary crushing, so that large pieces of plastic can be separated; A cleaning plate is welded on the pull rod, and the cleaning plate is in contact with the screening plate, and the pull rod and the cleaning plate together form a cleaning structure for bulk plastic.

[0010] Optionally, the four sliding rods are slidably connected with a collecting plate, and a retaining ring for limiting the collecting plate is welded on each of the four sliding rods; an elastic member for elastically resetting the collecting plate is sleeved on each of the four sliding rods; The bottom end surface of the screening plate is a pointed structure, and a protrusion with a triangular prism structure is welded on the collecting plate in a linear needle shape, and the protrusion and the screening plate are arranged in a staggered shape.

[0011] Optionally, the collecting plate is provided with sieve holes B in a linear array, and the sieve holes B are rectangular hole structures, and the sieve holes B provided in the linear array together constitute a plastic discharge structure.

[0012] Optionally, two toggle blocks are symmetrically mounted on the rotating shaft C, and the rotating shaft C is connected to the pulley on the rotating shaft A through a pulley and a belt, and when the rotating shaft C rotates, the toggle blocks are in elastic contact with the bottom end surface of the collecting plate.

[0013] Optionally, the two baffles are fixedly connected to the box body by bolts, and the two baffles together constitute a limiting structure for feeding the material.

[0014] Optionally, a protective shell is fixedly connected to the baffle by bolts, and a door panel is rotatably connected to the protective shell by hinges, and the door panel is in a closed state under the action of gravity.

[0015] Beneficial Effects Through the setting of the fixed seat and the handle, a collection box is inserted into the box body and a handle is installed on the collection box; the handle is an L-shaped bent rod structure, and the tail end of the handle is polished, and the tail end of the handle after polishing is a hemispherical structure; the tail end of the handle is elastically in contact with the fixed seat, and the fixed seat and the handle together constitute a friction locking structure of the collection box, so that there is no need to set up a separate locking structure for the collection box. Compared with the existing device, the collection box of the present application does not require a separate locking structure, and the operation is simpler.

[0016] Through the setting of the crushing part, firstly, since ten crushing pieces A are fixed on the rotating shaft A by bolts, and a partition block is sandwiched between two adjacent crushing pieces A, when a crushing piece A is seriously worn, it can be replaced separately; Secondly, the initial crushing of the plastic can be achieved through the crushing pieces A and the crushing pieces B under the transmission of two gears. During the initial crushing process, a partition block is clamped between two adjacent crushing pieces A, and a cutter is clamped between two adjacent crushing pieces B, and the cutter is in contact with the partition block. Therefore, when the driving motor rotates, the rotating shaft A and the rotating shaft B can rotate in the opposite direction, thereby achieving the crushing of the plastic. In addition, the setting of the cutter and the partition block can realize the segmentation of the plastic during the crushing process, thereby improving the crushing effect.

[0017] Through the setting of the auxiliary part, the driving part and the cleaning part, firstly, the plastic after the initial crushing will fall on the screening plate, at this time, the smaller plastic will fall from the screening plate, and the larger plastic will stay on the screening plate. At this time, the large plastic can be taken out of the box by pulling the pull rod, and then the large plastic can be crushed again; Second, because the bottom end surface of the screening plate is a pointed structure, and the collecting plate is welded with a triangular prism-shaped protrusion in a linear needle shape, and the protrusion is arranged in an alternating manner with the screening plate, when the collecting plate moves upward, it cooperates with the screening plate to achieve further crushing of the plastic; two toggle blocks are symmetrically installed on the rotating shaft C, and the rotating shaft C is connected to the pulley on the rotating shaft A through a pulley and a belt, and when the rotating shaft C rotates, the toggle block is elastically in contact with the bottom end surface of the collecting plate, thereby achieving the upward drive of the collecting plate, and then achieving the re-crushing of the plastic; compared with the existing device, the present application can automatically realize the segmentation of plastic during the crushing process, improve the crushing effect, and can drive the auxiliary part to achieve further crushing during the initial crushing process.

[0018] Through the setting of the feeding part, firstly, because the two baffles are fixedly connected to the box body by bolts, and the two baffles together constitute a limiting structure for the material during feeding, it can prevent the material from falling on the outside of the crushing piece A and the crushing piece B, thereby causing the crushing to fail; Secondly, because the baffle is fixedly connected to the protective shell by bolts, and the protective shell is rotatably connected to the door panel by hinges, and the door panel is in a closed state under the action of gravity, the door panel is automatically closed after feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0020] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached picture: Figure 1 It is a schematic diagram of the axial structure of the present invention; Figure 2 It is a main structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the axial structure of the box body of the present invention after being cut open; Figure 4 The present invention Figure 3 Schematic diagram of the main structure; Figure 5 The present invention Figure 4 A schematic diagram of the enlarged structure at point A; Figure 6 It is a schematic diagram of the axial structure of the present invention after removing the box body; Figure 7 It is a schematic diagram of the axial structure of the crushing part and the feeding part of the present invention; Figure 8 The present invention Figure 7 Schematic diagram of the left view structure; Fig. 9 It is a schematic diagram of the top view of the crushing unit of the present invention.

[0022] Reference numerals list 1. Box body; 101. Fixed seat; 102. Roller; 103. Screen plate; 104. Screen hole A; 105. Collecting box; 106. Handle; 2. Crushing part; 201. Rotating shaft A; 202. Crushing piece A; 203. Separating block; 204. Rotating shaft B; 205. Crushing piece B; 206. Cutter; 207. Gear; 208. Driving motor; 3. Screening part; 301. Mounting rod; 302. Screening plate; 4. Auxiliary part; 401. Sliding rod; 402. Collecting plate; 403. Elastic member; 404. Protrusion; 405. Screen hole B; 5. Driving part; 501. Rotating shaft C; 502. Toggle block; 6. Feeding part; 601. Baffle; 602. Protective shell; 603. Door panel; 7. Cleaning part; 701. Pull rod; 702. Cleaning plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0024] Example: Please refer to Figures 1 to 9 : The present invention proposes a crushing device for recycling plastics, comprising: a box body 1, a crushing part 2, a screening part 3, an auxiliary part 4, a driving part 5, a feeding part 6 and a cleaning part 7; The box body 1 is a rectangular box-shaped structure, and two fixing seats 101 are symmetrically welded on the box body 1; two rollers 102 are installed on each fixing seat 101, and the four rollers 102 are in contact with the ground; The crushing part 2 is composed of a rotating shaft A201, a crushing piece A202, a partition block 203, a rotating shaft B204, a crushing piece B205, a cutter 206, a gear 207 and a driving motor 208, and the rotating shaft A201 is rotatably connected to the box body 1; The screening part 3 is composed of a mounting rod 301 and a screening plate 302, and there are two mounting rods 301, and both mounting rods 301 are mounted on the box body 1; The auxiliary part 4 is composed of a sliding rod 401, a collecting plate 402, an elastic member 403, a protrusion 404 and a sieve hole B405, and there are four sliding rods 401 in total, and the four sliding rods 401 are fixedly connected in the box body 1 by bolts; The driving part 5 is composed of a rotating shaft C501 and a toggle block 502, and the rotating shaft C501 is rotatably connected to the box body 1; The feed part 6 is composed of a baffle 601, a protective shell 602 and a door plate 603, and there are two baffles 601 in total; The cleaning portion 7 is composed of a pull rod 701 and a cleaning plate 702 , and the pull rod 701 is slidably connected to the box body 1 .

[0025] In addition, according to an embodiment of the present invention, Figure 4 and Figure 5 As shown, a collection box 105 is inserted into the box body 1, and a handle 106 is installed on the collection box 105; the handle 106 is an L-shaped bent rod structure, and the tail end of the handle 106 is polished, and the tail end of the handle 106 after polishing is a hemispherical structure; the tail end of the handle 106 is in elastic contact with the fixed seat 101, and the fixed seat 101 and the handle 106 together constitute a friction locking structure of the collection box 105, so there is no need to set a locking structure of the collection box 105 separately.

[0026] In addition, according to an embodiment of the present invention, Figure 3 As shown, a sieve plate 103 is fixedly connected to the box body 1 by bolts, and the sieve plate 103 is provided with sieve holes A104 in a rectangular array, and the sieve plate 103 is arranged in an inclined state, so that dirt and other debris adhering to the plastic can be screened out, and the dirt is prevented from being mixed in the crushed plastic.

[0027] In addition, according to an embodiment of the present invention, Fig. 9 As shown, ten crushing pieces A202 are fixed on the rotating shaft A201 by bolts, and a partition block 203 is clamped between two adjacent crushing pieces A202, so that when a crushing piece A202 is severely worn, it can be replaced separately.

[0028] In addition, according to an embodiment of the present invention, Fig. 9 As shown, the rotating shaft B204 is rotatably connected to the box body 1, and ten crushing pieces B205 are fixed to the rotating shaft B204 by bolts; a cutter 206 is clamped between two adjacent crushing pieces B205, and the cutter 206 is in contact with the partition block 203; The box body 1 is fixedly connected with a driving motor 208 by bolts, and the rotating shaft of the driving motor 208 is connected to the rotating shaft B204; Gears 207 are installed on both the rotating shaft A201 and the rotating shaft B204, and the two gears 207 are meshed with each other, so that when the driving motor 208 rotates, the rotating shaft A201 and the rotating shaft B204 can rotate in opposite directions, thereby achieving plastic crushing. In addition, through the setting of the cutter 206 and the dividing block 203, the plastic can be segmented during the crushing process, thereby improving the crushing effect.

[0029] In addition, according to an embodiment of the present invention, Figure 3 As shown, screening plates 302 are bolted to two mounting rods 301 in a linear array, and the screening plates 302 bolted to the two mounting rods 301 in a linear array together form a screening structure for the plastic after preliminary crushing, so that large pieces of plastic can be separated; A cleaning plate 702 is welded on the pull rod 701, and the cleaning plate 702 is in contact with the screening plate 302. The pull rod 701 and the cleaning plate 702 together form a cleaning structure for large pieces of plastic, so that the large pieces of plastic can be cleaned out for subsequent re-crushing.

[0030] In addition, according to an embodiment of the present invention, Figure 3 As shown, the four sliding rods 401 are slidably connected with the collecting plates 402, and a retaining ring for limiting the collecting plates 402 is welded on each of the four sliding rods 401; an elastic member 403 for elastically resetting the collecting plates 402 is sleeved on each of the four sliding rods 401; The bottom end surface of the screening plate 302 is a pointed structure, and a protrusion 404 with a triangular prism structure is welded linearly on the collecting plate 402 in the shape of a needle, and the protrusion 404 and the screening plate 302 are arranged in a staggered manner, so that when the collecting plate 402 moves upward, it cooperates with the screening plate 302 to achieve further crushing of the plastic.

[0031] In addition, according to an embodiment of the present invention, Figure 6 As shown, the collecting plate 402 is provided with sieve holes B405 in a linear array, and the sieve holes B405 are rectangular hole structures, and the sieve holes B405 provided in the linear array together constitute a plastic discharge structure, thereby ensuring the normal discharge of the crushed plastic.

[0032] In addition, according to an embodiment of the present invention, Figure 3 As shown, two toggle blocks 502 are symmetrically installed on the rotating shaft C501, and the rotating shaft C501 is connected to the pulley on the rotating shaft A201 through a pulley and a belt, and when the rotating shaft C501 rotates, the toggle block 502 elastically contacts the bottom end surface of the collecting plate 402, thereby realizing the upward drive of the collecting plate 402, and then realizing the re-crushing of the plastic.

[0033] In addition, according to an embodiment of the present invention, Figure 7As shown, the two baffles 601 are fixedly connected to the box body 1 by bolts, and the two baffles 601 together constitute a limiting structure for material feeding, thereby preventing the material from falling on the outside of the crushing piece A202 and the crushing piece B205, thereby causing the crushing to fail.

[0034] In addition, according to an embodiment of the present invention, Figure 8 As shown, the baffle 601 is fixedly connected to a protective shell 602 by bolts, and the protective shell 602 is rotatably connected to a door panel 603 by hinges, and the door panel 603 is in a closed state under the action of gravity, thereby realizing automatic closing of the door panel 603 after feeding.

[0035] The specific usage and function of this embodiment are as follows: First, the plastic is put into the box body 1 from the door panel 603. At this time, the protective shell 602 is connected to the door panel 603 by hinge rotation, and the door panel 603 is in a closed state under the action of gravity, so that the door panel 603 is automatically closed after feeding, so that the plastic is prevented from jumping out and hurting people, and there is no need to close the door panel 603 separately; Then, the driving motor 208 is started. At this time, the plastic can be initially crushed by the crushing pieces A202 and the crushing pieces B205 under the transmission of the two gears 207. In the process of initial crushing, since a partition block 203 is clamped between two adjacent crushing pieces A202, and a cutter 206 is clamped between two adjacent crushing pieces B205, and the cutter 206 is in contact with the partition block 203, when the driving motor 208 rotates, the rotating shaft A201 and the rotating shaft B204 can rotate in the opposite direction, thereby achieving the crushing of the plastic. In addition, the setting of the cutter 206 and the partition block 203 can realize the segmentation of the plastic during the crushing process, thereby improving the crushing effect. The plastic after preliminary crushing will fall on the screening plate 302. At this time, the smaller plastic will fall from the screening plate 302, and the larger plastic will stay on the screening plate 302. At this time, the pull rod 701 can be pulled to take the large plastic out of the box 1, and then the large plastic can be crushed again. During the crushing process, since the bottom end surface of the screening plate 302 is a pointed structure, and the collecting plate 402 is welded with a protrusion 404 of a triangular prism structure in a linear needle shape, and the protrusion 404 and the screening plate 302 are arranged in a staggered manner, when the collecting plate 402 moves upward, it cooperates with the screening plate 302 to achieve further crushing of the plastic; two toggle blocks 502 are symmetrically installed on the rotating shaft C501, and the rotating shaft C501 is connected to the pulley on the rotating shaft A201 through a pulley and a belt, and when the rotating shaft C501 rotates, the toggle block 502 elastically contacts the bottom end surface of the collecting plate 402, thereby realizing the upward drive of the collecting plate 402, and then realizing the re-crushing of the plastic; The crushed plastic will fall onto the sieve plate 103. At this time, the sieve plate 103 has sieve holes A104 in a rectangular array and the sieve plate 103 is inclined, so that dirt and other debris adhering to the plastic can be screened out, thereby preventing the dirt from being mixed in the crushed plastic. The dirt and debris sifted out through the sieve hole A104 will fall into the collection box 105. When taking and placing the collection box 105, the collection box 105 is inserted into the box body 1, and a handle 106 is installed on the collection box 105; the handle 106 is an L-shaped bent rod structure, and the tail end of the handle 106 is polished, and the tail end of the handle 106 after polishing is a hemispherical structure; the tail end of the handle 106 is in elastic contact with the fixed seat 101, and the fixed seat 101 and the handle 106 together constitute a friction locking structure of the collection box 105, so there is no need to set a separate locking structure for the collection box 105.

[0036] Finally, it should be noted that when describing the position of each component and the matching relationship between them, the present invention usually takes one / a pair of components as an example. However, those skilled in the art should understand that such position, matching relationship, etc. are also applicable to other components / other pairs of components.

[0037] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A crushing device for recycling plastics, characterized in that: include: A box body (1), a crushing part (2), a screening part (3), an auxiliary part (4), a driving part (5), a feeding part (6) and a cleaning part (7); the box body (1) is a rectangular box-shaped structure, and two fixing seats (101) are symmetrically welded on the box body (1); two rollers (102) are installed on each fixing seat (101), and the four rollers (102) are in contact with the ground; a collection box (105) is inserted into the box body (1), and a handle (106) is installed on the collection box (105); the handle (106) The handle (106) is an L-shaped curved rod structure, and the rear end of the handle (106) is polished, and after the polishing process, the rear end of the handle (106) is a hemispherical structure; the rear end of the handle (106) is in elastic contact with the fixing seat (101), and the fixing seat (101) and the handle (106) together form a friction locking structure of the collection box (105); the crushing part (2) is composed of a rotating shaft A (201), a crushing sheet A (202), a partition block (203), a rotating shaft B (204), a crushing sheet B (205), a cutter (206), The auxiliary part (4) is composed of a sliding rod (401), a collecting plate (402), an elastic member (403), a protrusion (404) and a sieve hole B (405), and the sliding rod (401) is provided with four. The four sliding rods (401) are all fixedly connected to the box body (1) by bolts; the driving part (5) is composed of a rotating shaft C (501) and a toggle block (502), and the rotating shaft C (501) is rotatably connected to the box body (1); the feeding part (6) is composed of a baffle (601), a protective shell (602) and a door plate (603), and the baffle (601) is provided with two pieces; the cleaning part (7) is composed of a pull rod (701) and a cleaning plate (702), and the pull rod (701) is slidably connected to the box body (1).

2. A crushing device for recycling plastics as claimed in claim 1, characterized in that: A sieve plate (103) is fixedly connected to the box body (1) by means of bolts, and the sieve plate (103) is provided with sieve holes A (104) in a rectangular array, and the sieve plate (103) is arranged in an inclined state.

3. A crushing device for recycling plastics as claimed in claim 2, characterized in that: Ten crushing pieces A (202) are fixed to the rotating shaft A (201) by means of bolts, and a separation block (203) is clamped between two adjacent crushing pieces A (202).

4. A crushing device for recycling plastics as claimed in claim 3, characterized in that: The rotating shaft B (204) is rotatably connected to the box body (1), and ten crushing pieces B (205) are fixed to the rotating shaft B (204) by bolts; a cutter (206) is clamped between two adjacent crushing pieces B (205), and the cutter (206) is in contact with the partition block (203); A driving motor (208) is fixedly connected to the box body (1) by means of bolts, and a rotating shaft of the driving motor (208) is connected to a rotating shaft B (204); Gears (207) are mounted on both the rotating shaft A (201) and the rotating shaft B (204), and the two gears (207) are meshed with each other.

5. A crushing device for recycling plastics as claimed in claim 4, characterized in that: Screening plates (302) are bolted to the two mounting rods (301) in a linear array, and the screening plates (302) bolted in a linear array together form a screening structure for the plastic after preliminary crushing, so that large pieces of plastic can be separated; A cleaning plate (702) is welded to the pull rod (701), and the cleaning plate (702) is in contact with the screening plate (302), and the pull rod (701) and the cleaning plate (702) together form a cleaning structure for large pieces of plastic.

6. A crushing device for recycling plastics as claimed in claim 5, characterized in that: The four sliding rods (401) are slidably connected to a collecting plate (402), and each of the four sliding rods (401) is welded with a retaining ring for limiting the collecting plate (402); each of the four sliding rods (401) is sleeved with an elastic member (403) for elastically resetting the collecting plate (402); The bottom end surface of the screening plate (302) is a pointed structure, and a protrusion (404) with a triangular prism structure is welded linearly on the collecting plate (402) in a needle-like manner, and the protrusion (404) and the screening plate (302) are arranged in a staggered manner.

7. A crushing device for recycling plastics as claimed in claim 6, characterized in that: The collecting plate (402) is provided with sieve holes B (405) in a linear array, and the sieve holes B (405) are rectangular hole structures, and the sieve holes B (405) provided in the linear array together constitute a plastic discharge structure.

8. A crushing device for recycling plastics as claimed in claim 7, characterized in that: Two toggle blocks (502) are symmetrically mounted on the rotating shaft C (501), and the rotating shaft C (501) is connected to a pulley on the rotating shaft A (201) via a pulley and a belt, and when the rotating shaft C (501) rotates, the toggle blocks (502) are in elastic contact with the bottom end surface of the collecting plate (402).

9. A crushing device for recycling plastics as claimed in claim 8, characterized in that: The two baffles (601) are both fixedly connected to the box body (1) by means of bolts, and the two baffles (601) together form a limiting structure for feeding materials.

10. A crushing device for recycling plastics as claimed in claim 9, characterized in that: The baffle (601) is fixedly connected to a protective shell (602) via bolts, and the protective shell (602) is rotatably connected to a door panel (603) via a hinge, and the door panel (603) is in a closed state under the action of gravity.

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