Plastic crusher

Abstract

The utility model belongs to the technical field of plastic recovery, and particularly relates to a plastic crusher. Comprising a machine body, a crushing device, a screen and pressing devices, the crushing device is arranged on the machine body, two limiting devices are arranged on the side of the crushing device, the multiple pressing devices abut against the screen, and the two ends of the screen are limited to the lower side of the crushing device through the limiting devices. The screen is pressed through the pressing device, the two limiting devices are arranged on the side of the crushing device, the two ends of the screen are limited on the lower side of the crushing device through the two limiting devices, the structure is simple, and the screen is easy to disassemble and assemble.

Description

Technical Field

[0001] This utility model belongs to the field of plastic recycling technology, and in particular, it is a plastic crusher. Background Technology

[0002] As the consumption of plastic products continues to increase, the amount of waste plastic is also increasing. Since most plastics cannot be degraded naturally, if waste plastics generated in daily life and production are not effectively recycled and reused, they will harm the environment.

[0003] Because the sources of recycled plastics used in the production of recycled plastics are complex, and the composition varies greatly from different sources, it is essential to crush the raw materials in the pretreatment process to ensure the stability of the finished product's quality. The effectiveness of crushing directly determines the smooth progress of subsequent processes and the quality of the recycled plastic. Plastic crushing is the process of processing waste plastics or large pieces of plastic raw materials into smaller particles or fragments, which are then screened for subsequent recycling or reprocessing. The crushing blades and other related components require regular maintenance and replacement after a period of use to avoid affecting the quality of plastic crushing. The screen installed at the bottom of the crushing chamber is usually fixed to the bottom of the crushing chamber with bolts, etc. When maintaining or replacing the blades, the screen needs to be disassembled, replaced, and then reinstalled, which is cumbersome and affects the maintenance speed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a plastic crusher with a clamping device, which fixes the screen and makes disassembly and assembly simple.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: the plastic crusher includes a machine body, a crushing device, a screen and a pressing device. The crushing device is set on the machine body. Two limiting devices are provided on the side of the crushing device. Multiple pressing devices press against the screen, and the two ends of the screen are limited to the lower side of the crushing device by the limiting devices.

[0006] Preferably, the clamping device includes a fixed plate, a screw, a fixed seat, a nut, and a locking shaft. The fixed plate and the fixed seat are mounted on the machine body, and the fixed seat is located on the side of the fixed plate away from the screen. The fixed plate has a groove and a threaded hole. The threaded hole communicates with the groove. The screw passes through the fixed seat and the threaded hole and extends into the groove, pressing against the locking shaft that is slidably mounted in the groove. The nut fixes the screw.

[0007] Preferably, the crushing device includes a crushing chamber, a cutter roller, moving cutters, fixed cutters, and a crushing drive device. The crushing chamber is mounted on the machine body. The cutter roller is rotatably mounted inside the crushing chamber and connected to the crushing drive device mounted on the machine body. Multiple moving cutters are mounted on the circumference of the cutter roller. The side and bottom of the crushing chamber are provided with a discharge port and a feed port. The fixed cutter is mounted at the feed port of the crushing chamber.

[0008] Preferably, it also includes a rolling device and a feeding device, with the rolling device located at one end of the feeding device near the crushing device, and wheels provided on the lower side of the feeding device.

[0009] Preferably, the rolling device includes a support arm, a support arm drive device, and a rolling mill. The rolling mill is located at one end of the support arm, and the other end of the support arm is rotatably mounted on the feeding device. The support arm drive device is located on the feeding device and can adjust and hold the support arm. Multiple rolling teeth are arranged along the circumference of the rolling mill.

[0010] Preferably, the feeding device includes a feeding belt, a conveyor frame, and a feeding drive device. The feeding belt is connected to the feeding drive device, the feeding belt is horizontally arranged on the conveyor frame, and wheels are provided on the lower side of the conveyor frame.

[0011] Preferably, it also includes a discharge device, which includes a discharge belt and a discharge drive device. The discharge belt is installed on the machine body and is inclined to the lower side of the screen. The discharge belt is connected to the discharge drive device.

[0012] Compared with existing technologies, the beneficial effects of this technical solution are:

[0013] This utility model uses a pressing device to press the screen, and two limiting devices are provided on the side of the crushing device. The two ends of the screen are limited to the lower side of the crushing device by the two limiting devices. The structure is simple and the screen is easy to disassemble and assemble. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a plastic crusher according to the present invention.

[0015] Figure 2 This is a cross-sectional view of the crushing device of this utility model.

[0016] Figure 3 This is a schematic diagram of the rotating structure of this utility model.

[0017] The components include: 1. Machine body; 2. Pressing device 201, fixing plate 202, groove 203, locking shaft 204, screw 205, first nut 206, second nut 207, fixing seat; 3. Crushing device 301, cutter roller 302, moving blade 303, fixed blade 304, crushing chamber; 4. Feeding device 401, feeding belt 402, conveyor frame 403, wheel; 5. Discharge device 501, discharge belt; 6. Screen; 7. Support arm; 8. Drive housing; 9. Roller; 10. Positioning block; 11. Fixed blade mounting bracket; 12. Roller device. Detailed Implementation

[0018] Figures 1-3 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-3 The present invention will be further described below.

[0019] Reference Figure 1 The plastic crusher includes a body 1, a crushing device 3, a rolling device 12, a feeding device 4, a discharging device 5, a screen 6, and multiple pressing devices 2 arranged along the sides of the screen 6. The crushing device 3 is located on the upper side of the body 1, the feeding device 4 is slidably arranged on one side of the body 1, the rolling device 12 is located on the side of the feeding device 4 close to the crushing device 3, the feeding device 4 drives the rolling device 12 to move horizontally, and the discharging device 5 is located on the lower side of the screen 6.

[0020] Specifically, the discharge device 5 includes a discharge belt 501 and a discharge drive device. The discharge belt 501 is inclinedly arranged on the machine body 1 and is inclinedly arranged below the screen 6, with the end in the transport direction lower than the other end for convenient transport. The discharge drive device in this utility model is a reducer, which drives the discharge belt 501 to rotate through gears, thereby transporting the plastic screened from the screen 6 to the next stage.

[0021] Reference Figure 2 The crushing device 3 includes a crushing chamber 304, a cutter roller 301, moving blades 302, fixed blades 303, and a drive device. The circular crushing chamber 304 is located on the upper side of the machine body 1. The cutter roller 301 is connected to the drive device motor and rotates inside the crushing chamber 304. Two moving blades 302 are symmetrically arranged on the circumference of the cutter roller 301. The side and bottom of the crushing chamber 304 are provided with a discharge port and a feed port. The fixed blade 303 is installed at the feed port of the crushing chamber 304 through a fixed blade mounting bracket 11 and cooperates with the moving blades 302 to crush the plastic entering the crushing chamber 304.

[0022] The screen 6 of this utility model is provided on the lower side of the crushing device 3 by three pressing devices 2, and the three pressing devices 2 are evenly distributed on the outer circumference of the screen 6.

[0023] The clamping device 2 includes a fixed plate 201, a screw 204, a fixed seat 207, a nut, and a locking shaft 203. The rectangular fixed plate 201 is fixed to the inner wall of the machine body 1 by bolts. The fixed plate 201 has a groove 202 and a threaded hole in the middle, and the threaded hole communicates with the groove 202. The fixed seat 207 is set on the machine body 1 and is located on the side of the fixed plate 201 away from the screen 6. The screw 204 passes through the fixed seat 207, is threadedly connected to the threaded hole of the fixed plate 201, and extends into the groove 202, pressing against the locking shaft 203 which is slidably set in the groove 202. The locking shaft 203 is set perpendicular to the inner wall of the machine body 1 and presses against the outer side of the screen 6.

[0024] The nuts include a first nut 205 and a second nut 206. The first nut 205 is disposed between the fixed base 207 and the fixed plate 201, and the second nut 206 is disposed on the other side of the fixed base 207. After the screw 204 is pressed against the locking shaft 203, it is locked by the first nut 205 and the second nut 206.

[0025] The crushing device 3 is equipped with two limiting devices on its side. The clamping device 2 presses against the screen 6, and the two ends of the screen 6 are limited to the lower side of the crushing device 3 by the limiting devices. The limiting device of this utility model includes a positioning block 10 and a fixed blade mounting bracket 11. The positioning block 10 is set on the upper side of the crushing device 3. After the clamping device presses against the screen 6, the two ends of the screen 6 are respectively pressed against the positioning block 10 and the fixed blade mounting bracket 11, and the screen 6 is fixed by the clamping device 2 and the limiting devices. When it is necessary to repair or replace the blade or other parts, it is only necessary to turn the screw 204 to disengage the locking shaft 203 from the screen 6, and the screen 6 can be removed. The operation is simple.

[0026] Reference Figure 3 The feeding device 4 includes a feeding belt 401, a conveyor frame 402, and a feeding drive device. The feeding belt 401 is horizontally mounted on the conveyor frame 402 and is connected to the feeding drive device. The feeding device of this invention is a speed reducer; the gears drive the feeding belt 401 to rotate, transporting the plastic on the feeding belt 401 into the crushing device 3. Wheels 403 are provided on the lower side of the conveyor frame 402, allowing the feeding device 4 to move. At one end of the feeding device 4 near the crushing device 3, a frame is provided that connects to the machine body 1, and is fixed to the machine body 1 by bolts. When the screen 6 on the machine body 1 needs to be replaced or other devices need to be repaired, the feeding device 4 can be moved away for easy replacement or repair.

[0027] The rolling device 12 includes a support arm 7, a support arm drive device, and a rolling mill 9. The tail of the support arm 7 is rotatably mounted on the transport frame 402, and the end of the support arm 7 is fixedly connected to the drive housing 8. The support arm drive device is mounted on the feeding device 4. The support arm drive device of this utility model is a hydraulic cylinder. The telescopic rod of the hydraulic cylinder is connected to the support arm 7. When the crusher is working, the hydraulic cylinder pulls the support arm 7, so that the rolling mill 9 can work normally.

[0028] The drive housing 8 is hollow inside, with a through hole on the lower side for mounting the rotating shaft of the rolling mill 9. The drive housing 8 covers the upper side of the rolling mill 9, with part of the rolling mill 9 protruding from the drive housing 8 and part inside the drive housing 8. The rolling mill 9 is connected to a rolling drive device, which is a reducer located on the upper side inside the drive housing 8 and connected to the rotating shaft of the rolling mill 9, driving the rolling mill 9 to rotate. Multiple hobbing teeth are arranged along the circumference of the rolling mill 9. The rotation of the rolling mill 9 drives the hobbing teeth to rotate, pressing the glass transported by the feed belt 401 into the crushing device 3.

[0029] Work process:

[0030] The plastic to be crushed is transported to the crushing device 3 through the feeding device 4. The plastic is pressed into the feed inlet of the crushing device 3 by the roller press 9. The plastic is crushed in the crushing chamber 304 by the cooperation of the moving blade 302 and the fixed blade 303. The crushed plastic comes out from the discharge port and falls onto the screen 6. The screen 6 screens out plastics of appropriate size and they fall onto the discharge device 5, which then transports them to the next process.

[0031] When the cutter head needs to be inspected or replaced, loosen the nut, rotate the screw 204, and loosen the locking shaft 203 so that the locking shaft 203 is no longer pressing against the screen 6, thereby removing the screen 6 for inspection. After the inspection is completed, after the screen 6 is installed in position, tighten the screw 204 again so that the locking shaft 203 presses against the screen 6 until both ends of the screen 6 are engaged at the positioning block 10 and the fixed blade mounting bracket 11. Then tighten the nut to fix the screw 204. The structure is simple and the operation is easy.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its scope of protection shall still fall within the protection scope of this utility model.

Claims

1. A plastic shredder characterized by: It includes a machine body (1), a crushing device (3), a screen (6) and a pressing device (2). The crushing device (3) is installed on the machine body (1). Two limiting devices are provided on the side of the crushing device (3). Multiple pressing devices (2) press against the screen (6), and the two ends of the screen (6) are limited to the lower side of the crushing device (3) by the limiting devices.

2. A plastic shredder according to claim 1, characterized in that: The clamping device (2) includes a fixed plate (201), a screw (204), a fixed seat (207), a nut, and a locking shaft (203). The fixed plate (201) and the fixed seat (207) are mounted on the machine body (1), and the fixed seat (207) is mounted on the side of the fixed plate (201) away from the screen (6). The fixed plate (201) is provided with a groove (202) and a threaded hole. The threaded hole communicates with the groove (202). The screw (204) passes through the fixed seat (207) and extends into the groove (202) through the threaded hole, and presses against the locking shaft (203) which is slidably mounted in the groove (202). The nut fixes the screw (204).

3. A plastic shredder as claimed in claim 1, wherein: The crushing device (3) includes a crushing chamber (304), a cutter roller (301), moving cutters (302), fixed cutters (303), and a crushing drive device. The crushing chamber (304) is installed on the machine body (1). The cutter roller (301) is rotatably installed in the crushing chamber (304) and connected to the crushing drive device installed on the machine body (1). Multiple moving cutters (302) are installed on the circumference of the cutter roller (301). The side and bottom of the crushing chamber (304) are provided with a discharge port and a feed port. The fixed cutter (303) is installed at the feed port of the crushing chamber (304).

4. A plastic shredder as claimed in claim 1, wherein: It also includes a rolling device (12) and a feeding device (4). The rolling device (12) is located at one end of the feeding device (4) near the crushing device (3). The feeding device (4) has wheels (403) on its lower side.

5. A plastic shredder according to claim 4, characterised in that: The rolling device (12) includes a support arm (7), a support arm drive device and a rolling machine (9). The rolling machine (9) is located at one end of the support arm (7), and the other end of the support arm (7) is rotatably located on the feeding device (4). The support arm drive device is located on the feeding device (4) and can adjust and pull the support arm (7). Multiple rolling teeth are arranged along the circumference on the rolling machine (9).

6. A plastic shredder as claimed in claim 4, characterized in that: The feeding device (4) includes a feeding belt (401), a transport frame (402) and a feeding drive device. The feeding belt (401) is connected to the feeding drive device. The feeding belt (401) is horizontally arranged on the transport frame (402). The lower side of the transport frame (402) is provided with wheels (403).

7. A plastic shredder as claimed in claim 1, wherein: It also includes a discharge device (5), which includes a discharge belt (501) and a discharge drive device. The discharge belt (501) is set on the machine body (1) and is inclined to the lower side of the screen (6). The discharge belt (501) is connected to the discharge drive device.

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