A PE raw material crushing device

Abstract

This utility model relates to the field of plastic recycling technology and discloses a PE raw material crushing device, including a housing. The housing contains a crushing mechanism and a pulverizing mechanism. A drive mechanism providing power to the crushing and pulverizing mechanisms is located on the front of the housing. The crushing mechanism includes a crushing roller rotatably connected to the inside of the housing. An electric push rod is fixedly installed on the side wall of the housing. A push block for adjusting the gap between the crushing roller and the inner wall of the housing is fixedly connected to the output end of the electric push rod. The pulverizing mechanism includes a shaft rotatably connected to the inside of the housing. A first mounting plate and a second mounting plate are sequentially fixedly sleeved on the outside of the shaft. This PE raw material crushing device integrates coarse and fine crushing functions within a single device, and the pulverizing blades can be quickly disassembled and maintained, solving the problems of traditional crushers requiring multiple devices for step-by-step processing and complex pulverizing blade maintenance.

Description

Technical Field

[0001] This utility model relates to the field of plastic recycling technology, specifically to a PE raw material crushing device. Background Technology

[0002] With the development of industry, the application of plastic products has spread to all areas of industry, agriculture and daily life. Because the natural degradation time of ordinary plastic waste is very long and a large amount of harmful substances such as methane are produced during the degradation process, recycling plastic products is currently the best way to solve the plastic waste problem. The process of recycling waste plastics includes collection, sorting, cleaning, drying, crushing, regeneration granulation and molding. In the plastic crushing process, plastic recycling crushing equipment is required.

[0003] Existing devices typically fix the crushing blades to an integral crushing roller. When individual blades wear down due to long-term use, the entire crushing roller (including the less worn blades) needs to be replaced, increasing maintenance costs and wasting materials. Some devices use separate crushing blades, but their fixing structure relies on bolt connections, requiring special tools and individual operation for disassembly, which is time-consuming and labor-intensive, affecting equipment maintenance efficiency. Furthermore, traditional crushers are usually relatively simple in function, generally only capable of preliminary coarse crushing of large-sized plastic products. After coarse crushing, the particle size of the material obtained often does not meet the fine requirements of subsequent processing or use, so the coarsely crushed plastic material needs to be transferred to another specialized crusher for further crushing, making the entire crushing process more cumbersome. Therefore, there is an urgent need for a PE raw material crushing device to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a PE raw material crushing device, which has advantages such as good crushing effect and solves the problems of inconvenient maintenance and complicated crushing process.

[0006] (II) Technical Solution

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A PE raw material crushing device includes a box body, wherein a crushing mechanism and a pulverizing mechanism are provided inside the box body, and a drive mechanism for providing power to the crushing mechanism and the pulverizing mechanism is provided on the front of the box body.

[0008] The crushing mechanism includes a crushing roller rotatably connected to the inside of the housing, an electric push rod fixedly installed on the side wall of the housing, and a push block for adjusting the gap between the crushing roller and the inner wall of the housing fixedly connected to the output end of the electric push rod.

[0009] The crushing mechanism includes a shaft rotatably connected to the inside of the housing. A first mounting plate and a second mounting plate are sequentially fixedly sleeved on the outside of the shaft. The first mounting plate has multiple circumferentially distributed mounting grooves inside. A crushing blade is detachably inserted into each mounting groove. The end of the crushing blade away from the first mounting plate passes through the second mounting plate. The crushing blade is fixed between the first and second mounting plates by a limiting mechanism located inside the second mounting plate to restrict the axial movement of the crushing blade.

[0010] The beneficial effects of this utility model are:

[0011] This PE raw material crushing device integrates coarse and fine crushing functions in the same unit, and the crushing blades can be quickly disassembled and maintained, solving the problems of traditional crushers requiring multiple devices to process in stages and complex crushing blade maintenance.

[0012] Based on the above technical solution, the present invention can be further improved as follows.

[0013] Furthermore, the limiting mechanism includes a mounting sleeve fixedly connected inside the second mounting plate, a limiting pin slidably connected inside the mounting sleeve, a fastening spring fixedly connected to one end of the limiting pin inside the mounting sleeve, the pulverizing blade being cross-shaped, a fixing hole being opened inside the pulverizing blade, and the end of the limiting pin away from the fastening spring being inserted into the fixing hole.

[0014] The advantage of adopting the above-mentioned further solution is that the worn shredder blade can be quickly pulled out and replaced without tools and with a short operation time.

[0015] Furthermore, a friction tooth plate for increasing friction is fixedly connected to the side of the push block near the crushing roller, and a pressing tooth plate for assisting in pressing the raw material is fixedly connected to the top of the push block.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that the friction toothed plate and the extrusion toothed plate assist in the initial crushing, thereby improving the overall crushing effect.

[0017] Furthermore, a feeding funnel for uniform feeding is fixedly connected to the top of the box, and a guide plate is fixedly connected to the inner wall of the box. The guide plate is located between the crushing mechanism and the crushing mechanism and is used to guide the raw material processed by the crushing mechanism to the crushing mechanism.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the feed funnel can achieve uniform feeding of PE raw materials and avoid local accumulation.

[0019] Furthermore, a screening cylinder is fixedly connected inside the box, and a mounting frame is fixedly connected inside the screening cylinder. The mounting frame is rotatably connected to the shaft via bearings.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the screening cylinder can filter the crushed raw materials and intercept large particles that are not fully crushed.

[0021] Furthermore, the bottom of the box is provided with a discharge port for discharging the processed raw materials, and the back of the box is rotatably connected with an openable and closable maintenance door.

[0022] The advantage of adopting the above-mentioned further solution is that the access door can be opened and closed, which makes it convenient for staff to regularly inspect or replace internal vulnerable parts and reduces the difficulty of maintenance.

[0023] Furthermore, the drive mechanism includes a motor fixedly installed on the front of the housing, the output shaft of the motor being fixedly connected to a shaft, a first pulley being fixedly connected to one end of the shaft located outside the housing, a second pulley being fixedly connected to the rotating shaft inside the crushing roller, and a drive belt being driven to the outside of both the first pulley and the second pulley.

[0024] The beneficial effect of adopting the above-mentioned further solution is that the motor synchronously drives the shaft (driving the crushing mechanism) and the crushing roller (driving the crushing mechanism) through the first pulley, the transmission belt and the second pulley. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0027] Figure 3 This is a cross-sectional view of the limiting mechanism in this utility model;

[0028] Figure 4 This is a schematic diagram of the shredder blade in this utility model;

[0029] Figure 5 for Figure 1 Another view from a different direction.

[0030] In the diagram: 1. Box body; 2. Crushing roller; 3. Electric push rod; 4. Push block; 5. Shaft; 6. First mounting plate; 7. Mounting groove; 8. Crushing blade; 9. Second mounting plate; 10. Mounting sleeve; 11. Limit pin; 12. Fastening spring; 13. Friction tooth plate; 14. Extrusion tooth plate; 15. Feed funnel; 16. Guide plate; 17. Screening cylinder; 18. Mounting frame; 19. Discharge port; 20. Inspection door; 21. Motor; 22. First pulley; 23. Second pulley; 24. Drive belt. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In the embodiments, by Figure 1-5 The present invention discloses a PE raw material crushing device, comprising a housing 1, wherein a crushing mechanism and a pulverizing mechanism are disposed inside the housing 1, and a drive mechanism for providing power to the crushing and pulverizing mechanisms is disposed on the front of the housing 1. The crushing mechanism includes a crushing roller 2 rotatably connected inside the housing 1, and crushing teeth adapted to the crushing roller 2 are disposed inside the housing 1. An electric push rod 3 is fixedly installed on the side wall of the housing 1, and a push block 4 for adjusting the gap between the crushing roller 2 and the inner wall of the housing 1 is fixedly connected to the output end of the electric push rod 3. A friction tooth plate 13 for increasing friction is fixedly connected to the side of the push block 4 near the crushing roller 2, and a compression tooth plate 14 for assisting in compressing the raw material is fixedly connected to the top of the push block 4.

[0033] In this embodiment, in actual use, the top of the box 1 is fixedly connected to a feeding funnel 15 for uniform feeding. The feeding funnel 15 can realize the feeding of large PE raw materials. The push block 4 is moved by the electric push rod 3. The friction tooth plate 13 enhances the friction between the push block 4 and the surface of the crushing roller 2. The extrusion tooth plate 14 can assist in extruding large pieces of PE raw materials during the movement of the push block 4, assisting in the initial crushing and improving the overall crushing effect. The motor controller, push rod controller and the main control panel are all conventional configurations in the field of plastic recycling equipment (such as PLC controller, servo driver or mechanical adjustment knob). Their specific structure, circuit connection and control logic are existing technologies. This application will not describe them in detail. The focus is on realizing the coordinated control of the motor 21 and the electric push rod 3 through the above control equipment, thereby optimizing the automated operation of the crushing and pulverizing process.

[0034] Specifically, refer to Figure 2 The crushing mechanism includes a shaft 5 rotatably connected inside the housing 1. A first mounting plate 6 and a second mounting plate 9 are sequentially fixedly sleeved on the outside of the shaft 5. The first mounting plate 6 has multiple circumferentially distributed mounting grooves 7 inside. A crushing blade 8 is detachably inserted into the mounting groove 7. The end of the crushing blade 8 away from the first mounting plate 6 passes through the second mounting plate 9. A guide plate 16 is fixedly connected to the inner wall of the housing 1. The guide plate 16 is located between the crushing mechanism and the crushing mechanism and is used to guide the raw material processed by the crushing mechanism to the crushing mechanism.

[0035] In this embodiment, in actual use, a screening cylinder 17 is fixedly connected inside the housing 1, and a mounting frame 18 is fixedly connected inside the screening cylinder 17. The mounting frame 18 is rotatably connected to the shaft 5 through a bearing. The shaft 5 is located inside the screening cylinder 17. The guide plate 16 can accurately guide the raw material processed by the crushing mechanism to the area above the crushing blade 8, ensuring that the raw material passes through the crushing, pulverizing and screening processes in sequence, thereby improving the continuity of processing.

[0036] The screening cylinder 17 can perform preliminary filtration on the crushed raw materials and screen out fully crushed particles. The mounting frame 18 supports the rotation of the shaft 5 through the bearing, which ensures the stable operation of the crushing mechanism and facilitates the relative fixation of the screening cylinder 17 and the shaft 5.

[0037] Specifically, refer to Figure 1 The drive mechanism includes a motor 21 fixedly installed on the front of the housing 1. The output shaft of the motor 21 is fixedly connected to the shaft 5. A first pulley 22 is fixedly connected to one end of the shaft 5 located outside the housing 1. A second pulley 23 is fixedly connected to the rotating shaft inside the crushing roller 2. Both the first pulley 22 and the second pulley 23 are connected to a drive belt 24.

[0038] In this embodiment, in actual use, the motor 21 synchronously drives the shaft 5 to drive the crushing mechanism and the crushing roller 2 through the first pulley 22, the transmission belt 24 and the second pulley 23.

[0039] The shredder 8 is fixed between the first mounting plate 6 and the second mounting plate 9 by a limiting mechanism. The limiting mechanism is located inside the second mounting plate 9 and is used to restrict the axial movement of the shredder 8. The limiting mechanism includes a mounting sleeve 10 fixedly connected inside the second mounting plate 9. A limiting pin 11 is slidably connected inside the mounting sleeve 10. A fastening spring 12 is fixedly connected to one end of the limiting pin 11 inside the mounting sleeve 10. The shredder 8 is cross-shaped and has a fixing hole inside. The end of the limiting pin 11 away from the fastening spring 12 is inserted into the fixing hole.

[0040] By pressing the fastening spring 12 to disengage the limiting pin 11 from the fixing hole of the crusher 8, the worn crusher 8 can be quickly pulled out for replacement. No tools are required and the operation time is short (less than 10 seconds). This solves the problems of complex fixing structure and time-consuming and laborious disassembly and assembly of traditional crushers. The cross-shaped crusher 8 provides stability to the installation structure. The centrifugal force generated by the fastening spring 12 and the rotation of the shaft 5 can keep the limiting pin 11 stable in fixing the crusher.

[0041] Specifically, refer to Figure 5The bottom of the box 1 is provided with a discharge port 19 for discharging the processed raw materials. The back of the box 1 is rotatably connected with an openable and closable inspection door 20. The discharge port 19 facilitates the centralized discharge and collection of crushed and pulverized PE raw materials. The inspection door 20 is designed to be openable and closable, which makes it convenient for staff to regularly inspect or replace internal vulnerable parts and reduce maintenance difficulty.

[0042] Working principle:

[0043] First: After starting the motor 21, the PE raw material is evenly fed into the device through the feed funnel 15 at the top of the box 1. The electric push rod 3 drives the push block 4 to move according to the initial state of the raw material, such as hardness and size. The friction tooth plate 13 on one side of the push block 4 is in close contact with the surface of the raw material to enhance the friction. The top squeezing tooth plate 14 assists in squeezing large pieces of PE raw material to prevent the raw material from falling upward. The PE raw material is coarsely crushed by the rotation of the crushing roller 2 in conjunction with the crushing teeth on the box 1.

[0044] Then: the raw material passes through the gap between the crushing roller 2 and the crushing teeth, and is precisely guided to the crushing mechanism area by the guide plate 16. The first mounting plate 6 and the second mounting plate 9, which are fixedly sleeved on the outside of the shaft 5, rotate through the shaft 5. The crushing blade 8 on the mounting plate cuts the raw material as it rotates, completing the fine crushing of the PE raw material. The PE raw material that has been finally processed by the screening cylinder 17 is discharged and collected through the discharge port 19 at the bottom of the box 1.

[0045] During maintenance, open the inspection door 20, pull out the limit pin 11 to remove the fixing hole of the shredder 8, and then the shredder 8 can be pulled out of the mounting plate for individual replacement.

[0046] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PE raw material crushing device, comprising a housing (1), characterized in that: The box (1) is equipped with a crushing mechanism and a pulverizing mechanism inside, and the front of the box (1) is equipped with a drive mechanism that provides power to the crushing mechanism and the pulverizing mechanism. The crushing mechanism includes a crushing roller (2) rotatably connected inside the housing (1), an electric push rod (3) is fixedly installed on the side wall of the housing (1), and a push block (4) for adjusting the gap between the crushing roller (2) and the inner wall of the housing (1) is fixedly connected to the output end of the electric push rod (3). The crushing mechanism includes a shaft (5) rotatably connected inside the housing (1). A first mounting plate (6) and a second mounting plate (9) are sequentially fixedly sleeved on the outside of the shaft (5). The first mounting plate (6) has multiple circumferentially distributed mounting grooves (7) inside. A crushing blade (8) is detachably inserted into the mounting groove (7). The end of the crushing blade (8) away from the first mounting plate (6) passes through the second mounting plate (9). The crushing blade (8) is fixed between the first mounting plate (6) and the second mounting plate (9) by a limiting mechanism. The limiting mechanism is set inside the second mounting plate (9) to limit the axial movement of the crushing blade (8).

2. The PE raw material crushing device according to claim 1, characterized in that: The limiting mechanism includes a mounting sleeve (10) fixedly connected inside the second mounting plate (9). A limiting pin (11) is slidably connected inside the mounting sleeve (10). A fastening spring (12) is fixedly connected to one end of the limiting pin (11) inside the mounting sleeve (10). The crushing blade (8) is cross-shaped. A fixing hole is opened inside the crushing blade (8). The end of the limiting pin (11) away from the fastening spring (12) is inserted into the fixing hole.

3. The PE raw material crushing device according to claim 1, characterized in that: The pusher block (4) is fixedly connected to a friction tooth plate (13) for increasing friction on the side near the crushing roller (2), and the top of the pusher block (4) is fixedly connected to a pressing tooth plate (14) for assisting in pressing the raw material.

4. The PE raw material crushing device according to claim 1, characterized in that: The top of the box (1) is fixedly connected to a feeding funnel (15) for uniform feeding. A guide plate (16) is fixedly connected to the inner wall of the box (1). The guide plate (16) is located between the crushing mechanism and the crushing mechanism and is used to guide the raw material processed by the crushing mechanism to the crushing mechanism.

5. The PE raw material crushing device according to claim 1, characterized in that: The screening cylinder (17) is fixedly connected inside the box (1), and the mounting frame (18) is fixedly connected inside the screening cylinder (17). The mounting frame (18) is rotatably connected to the shaft (5) through a bearing.

6. The PE raw material crushing device according to claim 1, characterized in that: The bottom of the box (1) is provided with a discharge port (19) for discharging the processed raw materials, and the back of the box (1) is rotatably connected with an openable and closable maintenance door (20).

7. The PE raw material crushing device according to claim 1, characterized in that: The drive mechanism includes a motor (21) fixedly installed on the front of the housing (1). The output shaft of the motor (21) is fixedly connected to the shaft (5). The shaft (5) located outside the housing (1) is fixedly connected to a first pulley (22). The rotating shaft inside the crushing roller (2) is fixedly connected to a second pulley (23). Both the first pulley (22) and the second pulley (23) are connected to a transmission belt (24).

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