Multistage crusher discharge structure for plastic bottle recycling
By introducing a cooling system with a bonding plate and air guide shroud, and a swingable guide plate structure into the crusher, the problem of screen plate blockage caused by heat and static electricity during the crushing of plastic bottles is solved, enabling smooth discharge and efficient recycling of plastic flakes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINJIANG YONGHONG REGENERATION RESOURCES LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-07-31
AI Technical Summary
During the crushing process of plastic bottles, the friction between the crusher's blades and the plastic bottles causes the temperature to rise. The heat buildup leads to screen blockage and static electricity adhesion of plastic particles, affecting the smooth discharge.
Design a multi-stage crusher discharge structure, including a combination of a bonding plate and a guide shroud. A fan is used to cool down the plastic sheet on the surface of the screen plate and blow it away. At the same time, a swingable guide plate is used to shake off the plastic sheet attached by static electricity.
This effectively prevents plastic sheets from softening and clogging the screen plate due to heat and from being attracted by static electricity, ensuring smooth material feeding and efficient recycling of the crusher.
Smart Images
Figure CN224575975U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crusher technology, and in particular to a discharge structure for a multi-stage crusher for recycling plastic bottles. Background Technology
[0002] PET plastic is a highly packed molecular structure with excellent crystal orientation capabilities. Because of these two properties, PET plastic has excellent film-forming properties. Furthermore, good optical properties and weather resistance are also two of PET's defining characteristics. Moreover, PET is a good insulating material. These characteristics make it an excellent material for making plastic bottles; PET plastic bottles are lightweight, non-toxic, and structurally strong. When recycling, these bottles need to be crushed into plastic flakes.
[0003] In existing technologies, crushers are commonly used to crush plastic bottles. However, during the crushing process, the crusher blades rub against the plastic bottles, causing the temperature of the crushed bottles to rise. When there is an overfeed that cannot be discharged in time, the heat inside the crusher can cause the edges of some plastic fragments to soften and adhere to the discharge port and screen surface, resulting in screen blockage and poor discharge. Furthermore, due to the property of plastic to easily generate static electricity, plastic particles can easily adhere to the discharge port of the crusher due to the charge during the crushing process, which can also cause poor discharge.
[0004] Therefore, it is necessary to invent a multi-stage crusher discharge structure for plastic bottle recycling to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a discharge structure for a multi-stage crusher for recycling plastic bottles, so as to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage crusher discharge structure for plastic bottle recycling, comprising a crusher body, two crushing rollers rotatably mounted inside the crusher body, a base plate fixedly mounted at the bottom of the crusher body, two symmetrically distributed screen plates fixedly mounted in the middle of the base plate, both screen plates being arc-shaped, a bonding plate fixedly mounted between the two screen plates, the bonding plate having a "∧" shaped cross-section, and strip-shaped through grooves penetrating both sides of the bonding plate, the through grooves being inclined upwards. The structure includes a wind guide hood fixedly installed at the bottom of the main body of the crusher. The wind guide hood is located below the bonding plate and is designed as a "∧" shaped structure that matches the bonding plate. Air outlet slots are provided through the middle of both sides of the wind guide hood, and the air outlet slots are located below the opening of the through slot. A discharge hood is fixedly installed at the bottom of the main body of the crusher. Guide plates are fixedly installed at the top of the inner walls of both sides of the discharge hood. A guide plate is provided below the guide plate. A connecting plate is fixedly installed at the top of the guide plate, and the top of the connecting plate is rotatably installed inside the discharge hood via a pin.
[0007] Preferably, a fixing plate is fixedly installed on both inner walls of the discharge hood, and a spring is installed between the fixing plate and the guide plate.
[0008] Preferably, an arc-shaped block is fixedly installed on the lower surface of the guide plate, and the outer side of the arc-shaped block is provided with an arc-shaped groove in the middle.
[0009] Preferably, a rotating shaft is rotatably mounted inside the discharge hood via a bearing, a cam is fixedly mounted in the middle of the rotating shaft, and a pulley is rotatably mounted on the outer wall of the cam via a bearing, and the pulley is slidably mounted in a groove on the outer side of the arc-shaped block.
[0010] Preferably, a gear transmission box is fixedly installed on the outer side of the discharge hood, one end of each of the two rotating shafts is connected to the gear transmission box, and a motor is installed above the gear transmission box.
[0011] Preferably, the bottom end of the discharge hood is fixedly installed with a discharge port.
[0012] Preferably, a fan is fixedly installed on the outer side of the main body of the crusher, and an air duct is fixedly installed at the output end of the fan, with one end of the air duct connected to the inside of the air guide shroud.
[0013] The technical effects and advantages of this utility model are as follows:
[0014] 1. This utility model, by setting a bonding plate and a wind guide hood inside the main body of the crusher, with the bonding plate located between two screen plates, can guide the air generated by the fan to the inner surface of the screen plate when recycling and crushing plastic bottles, thereby cooling down the plastic raw materials inside the crusher. This prevents the plastic raw materials from softening and adhering due to the heat accumulation caused by crushing friction. At the same time, after the air reaches the surface of the screen plate, it can blow up the plastic sheet bonded to the surface of the screen plate, thereby preventing the plastic sheet from clogging the screen plate and affecting the material feeding, so that the device can feed smoothly when crushing and recycling plastic bottles.
[0015] 2. This utility model provides a discharge hood at the bottom of the main body of the crusher. Inside the discharge hood are two guide plates that can swing up and down. During the swinging process, the guide plates can lift the crushed plastic sheets upwards, which not only prevents the plastic sheets from being attracted to the inside of the device due to static electricity, but also shakes the plastic sheets apart, so as to facilitate the subsequent recycling of the plastic sheets. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0017] Figure 2 This is a cross-sectional schematic diagram of the overall structure of this utility model.
[0018] Figure 3 This is a schematic diagram of the bonding plate and air guide cover structure of this utility model.
[0019] Figure 4 This is a schematic diagram of the material discharge cover structure of this utility model.
[0020] Figure 5 This is a schematic diagram of the guide plate structure of this utility model.
[0021] In the diagram: 1. Crusher body; 2. Crushing roller; 3. Base plate; 4. Screen plate; 5. Adhesive plate; 6. Through groove; 7. Air guide hood; 8. Air outlet duct; 9. Discharge hood; 10. Guide plate; 11. Guide plate; 12. Connecting plate; 13. Fixing plate; 14. Spring; 15. Arc block; 16. Rotating shaft; 17. Cam; 18. Pulley; 19. Gear transmission box; 20. Motor; 21. Discharge port; 22. Fan; 23. Air duct. Detailed Implementation
[0022] 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.
[0023] This utility model provides, for example Figure 1-5 The discharge structure of a multi-stage crusher for recycling plastic bottles shown includes a crusher body 1, two crushing rollers 2 are rotatably installed inside the crusher body 1, a bottom plate 3 is fixedly installed at the bottom inside the crusher body 1, and two symmetrically distributed screen plates 4 are fixedly installed in the middle of the bottom plate 3, and both screen plates 4 are designed as arc-shaped structures.
[0024] A bonding plate 5 is fixedly installed between two screen plates 4, and the cross section of the bonding plate 5 is a "∧" shaped structure. Both sides of the bonding plate 5 are provided with strip-shaped through grooves 6, and the through grooves 6 are designed to be inclined upwards. An air guide hood 7 is fixedly installed at the bottom of the inside of the crusher body 1. The air guide hood 7 is located below the bonding plate 5, and the air guide hood 7 is designed to be a "∧" shaped structure that matches the bonding plate 5. Both sides of the air guide hood 7 are provided with air outlet grooves 8, and the air outlet grooves 8 are located below the opening of the through groove 6. The air in the air guide hood 7 passes through the air outlet grooves 8 and reaches the through groove 6, and then reaches the surface of the screen plate 4. Since the through groove 6 is an inclined structure, the contact area between the plastic sheet and the opening of the through groove 6 after crushing is small, so the plastic sheet will not enter the through groove 6 and cause blockage.
[0025] A fan 22 is fixedly installed on the outer side of the main body 1 of the crusher. A duct 23 is fixedly installed at the output end of the fan 22, and one end of the duct 23 is connected to the inside of the air guide shroud 7. The fan 22 adopts the corresponding structure in the existing technology, which can accelerate the air flow to form a high-speed airflow.
[0026] A discharge hood 9 is fixedly installed at the bottom of the main body 1 of the crusher. Guide plates 10 are fixedly installed at the top of the inner walls on both sides of the discharge hood 9. A guide plate 11 is provided below the guide plate 10. A connecting plate 12 is fixedly installed at the top of the guide plate 11. The top of the connecting plate 12 is rotatably installed inside the discharge hood 9 through a pin. The connecting plate 12 is used to support the guide plate 11. The connecting plate 12 is located below the guide plate 10. The connecting plate 12 and the guide plate 10 together form a guiding structure to ensure that the crushed plastic sheet can pass through the upper surface of the guide plate 10 and the guide plate 11 and then fall down.
[0027] A fixing plate 13 is fixedly installed on both inner walls of the discharge hood 9. A spring 14 is installed between the fixing plate 13 and the guide plate 11. An arc-shaped block 15 is fixedly installed on the lower surface of the guide plate 11. The outer side of the arc-shaped block 15 has an arc-shaped groove in the middle. A rotating shaft 16 is rotatably installed inside the discharge hood 9 through a bearing. A cam 17 is fixedly installed in the middle of the rotating shaft 16. A pulley 18 is rotatably installed on the outer wall of the cam 17 through a bearing. The pulley 18 is slidably installed in the groove on the outer side of the arc-shaped block 15. A gear transmission box 19 is fixedly installed on the outer side of the discharge hood 9. One end of each of the two rotating shafts 16 is connected to the gear transmission box 19. A motor 20 is installed above the gear transmission box 19. The gear transmission box 19 adopts the corresponding structure in the prior art. It includes multiple sets of meshing gears, which can transmit the power output by the motor 20 to the two rotating shafts 16.
[0028] The bottom end of the discharge hood 9 is fixedly installed with a discharge port 21, which is used for the final discharge of materials.
[0029] Working principle of this utility model:
[0030] When using this device, the plastic bottle to be processed is put into the crusher body 1, and the power source of the crusher body 1 is started to drive the two crushing rollers 2 to rotate. The crushing rollers 2 rotate to crush the plastic bottle. The crushed plastic bottle reaches the screen plate 4 under the guidance of the crushing rollers 2. At this time, the plastic pieces that meet the crushing standard size pass through the screen plate 4 and enter the discharge hood 9, and are then discharged. The plastic pieces that do not meet the standard stay above the screen plate 4 and continue to move and be crushed with the crushing rollers 2 until they meet the standard.
[0031] When the crusher body 1 is crushing plastic bottles, the blower 22 is started. The air generated by the blower 22 enters the air guide hood 7 through the air duct 23. The air in the air guide hood 7 enters the through groove 6 through the air outlet 8, and then enters the screen plate 4 at an angle. After passing through the through groove 6, the air directly reaches the space between the two crushing rollers 2. The plastic sheet between the two crushing rollers 2 is in a crushing state. The plastic sheet heats up due to the heat generated by the crushing friction. At this time, the air passes between the plastic sheets and carries away the heat to achieve heat dissipation and cooling of the plastic sheet. This can prevent the edges of the plastic sheet from softening and adhering to the surface of the screen plate 4. At the same time, after the air passes through the through groove 6, it can blow up the plastic sheet above the bonding plate 5, so that the plastic sheet can move with the crushing roller 2 to ensure the crushing effect. After reaching the surface of the screen plate 4, the air moves along the surface of the screen plate 4 and blows up the plastic sheet attached to the surface of the screen plate 4 to prevent the plastic sheet from clogging the screen plate 4 and affecting the feeding.
[0032] After being crushed, the plastic flakes fall into the discharge hood 9 through the sieve plate 4. Under gravity, the flakes fall onto the upper surfaces of the guide plates 10 and 11, and then slide down through the discharge port 21 to complete the discharge. During this process, some plastic flakes attract and clump together due to static electricity generated by friction, while others adhere to the surfaces of the guide plates 10 and 11 under static electricity. At this point, the motor 20 is started. The motor 20 drives two rotating shafts 16 to rotate via the gear transmission box 19. The two rotating shafts 16 drive the cam 17 to rotate. During the rotation, the arc-shaped block 15 is squeezed by the pulley 18, so that the guide plate 11 swings upward. After swinging upward, the guide plate 11 is reset under the action of the spring 14. During this process, the guide plate 11 swings up and down. The up and down swinging guide plate 11 can lift the plastic sheet upward, so that the clump of plastic sheet is shaken off. At the same time, the plastic sheet with static electricity is shaken off, so as to ensure the feeding effect of the device. In addition, the vibration generated by the guide plate 11 during the up and down swinging process accelerates the sliding of the plastic sheet on the upper surface of the guide plate 10, further improving the feeding rate of the device.
[0033] It should be noted that the main body 1 and crushing roller 2 of the crusher in this embodiment adopt the corresponding structure of the crusher in the prior art. In this embodiment, a material stacking area can be set below the discharge port 21, or it can be used in conjunction with a conveyor belt and a screw conveyor to complete the continuous feeding of plastic sheets.
[0034] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0035] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0036] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A multi-stage crusher discharge structure for plastic bottle recycling, comprising a crusher body (1), characterized in that: The crusher body (1) has two rotatably mounted crushing rollers (2) inside. A base plate (3) is fixedly installed at the bottom of the crusher body (1). Two symmetrically distributed screen plates (4) are fixedly installed in the middle of the base plate (3), and both screen plates (4) are arc-shaped. A bonding plate (5) is fixedly installed between the two screen plates (4), and the cross-section of the bonding plate (5) is "∧" shaped. Both sides of the bonding plate (5) are provided with strip-shaped through grooves (6), and the through grooves (6) are inclined upwards. A wind guide hood (7) is fixedly installed at the bottom of the crusher body (1). The air guide hood (7) is located below the bonding plate (5) and is designed with a "∧" shaped structure that is compatible with the bonding plate (5). The air guide hood (7) has an air outlet groove (8) running through the middle of both sides. The air outlet groove (8) is located below the opening of the through groove (6). The bottom end of the crusher body (1) is fixedly installed with a discharge hood (9). The top of the inner walls on both sides of the discharge hood (9) is fixedly installed with a guide plate (10). The bottom of the guide plate (10) is provided with a guide plate (11). The top of the guide plate (11) is fixedly installed with a connecting plate (12). The top of the connecting plate (12) is rotatably installed inside the discharge hood (9) through a pin.
2. A multi-stage comminutor discharge arrangement for plastic bottle recycling according to claim 1, characterized in that: The inner walls on both sides of the discharge hood (9) are fixedly installed with fixing plates (13), and a spring (14) is installed between the fixing plate (13) and the guide plate (11).
3. A multi-stage comminutor discharge arrangement for plastic bottle recycling according to claim 2, characterized in that: An arc-shaped block (15) is fixedly installed on the lower surface of the guide plate (11), and the outer side of the arc-shaped block (15) is provided with an arc-shaped groove.
4. The multi-stage comminutor discharge arrangement for plastic bottle recycling of claim 3, wherein: The discharge hood (9) has a rotating shaft (16) rotatably mounted inside via a bearing. A cam (17) is fixedly mounted in the middle of the rotating shaft (16). A pulley (18) is rotatably mounted on the outer wall of the cam (17) via a bearing. The pulley (18) is slidably mounted in the groove on the outer side of the arc-shaped block (15).
5. A multi-stage comminutor discharge arrangement for plastic bottle recycling according to claim 4, characterized in that: A gear transmission box (19) is fixedly installed on the outer side of the discharge hood (9). One end of each of the two rotating shafts (16) is connected to the gear transmission box (19). A motor (20) is installed above the gear transmission box (19).
6. A multi-stage comminutor discharge arrangement for plastic bottle recycling according to claim 5, characterized in that: The bottom end of the discharge hood (9) is fixedly installed with a discharge port (21).
7. A multi-stage comminutor discharge arrangement for plastic bottle recycling according to claim 1, characterized in that: A fan (22) is fixedly installed on the outer side of the main body (1) of the crusher. A duct (23) is fixedly installed at the output end of the fan (22), and one end of the duct (23) is connected to the inside of the air guide shroud (7).