Plastic part crushing device for recycling waste electric appliances
By using an electromagnetic suction unit to separate plastics and metals in a waste electrical appliance recycling device, the wear problem caused by metal contamination during the crushing process is solved, achieving efficient separation and extended lifespan.
Patent Information
- Application Number
- CN202423161028.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Plastic parts in waste electrical appliances contain metal materials that wear down the crushing equipment during the crushing process, shortening its service life and making it difficult to separate them effectively.
Design a device that includes a receiving hopper, a crushing roller assembly, and a screening cylinder. An electromagnetic suction unit is installed inside the screening cylinder. Through the cooperation of the electromagnet in the insertion plate and the contact of the power supply cable, the separation of plastic and metal is achieved, and screening is carried out by utilizing the difference in magnetic force.
It effectively separates plastics and metals, extends the service life of the crushing device, improves operating efficiency, and reduces the difficulty of subsequent crushing.
Smart Images
Figure CN223685808U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to plastic crushing recycling technical field, specifically, relate to a kind of plastic piece crushing device for waste electrical and electronic equipment recycling. BACKGROUND
[0002] The crushing recycling of waste electrical and electronic equipment plastic parts is an important environmental protection and resource recycling process. Waste electrical and electronic equipment contains a large amount of plastic parts. First, waste electrical and electronic equipment needs to be collected and preliminarily classified for subsequent processing. The classified waste electrical and electronic equipment plastic parts are sent to a crusher for crushing to form smaller plastic pieces for recycling. However, the plastic parts of waste electrical and electronic equipment often have metal materials such as screws, which are mixed in the crushed plastic and are difficult to remove. Further crushing can accelerate the wear of the crushing device and shorten its service life. SUMMARY
[0003] The utility model aims to provide a plastic piece crushing device for waste electrical and electronic equipment recycling, which can easily screen out metal parts from crushed plastic, prolong the service life of the crushing device and make the plastic composition purer.
[0004] The utility model realizes the following technical scheme: a plastic piece crushing device for waste electrical and electronic equipment recycling, comprising a receiving hopper and at least one set of crushing roller assembly. The bottom of the receiving hopper is connected with a screening cylinder. The middle part of the screening cylinder is provided with a rotating drum. The outer edge surface of the rotating drum is uniformly provided with a plurality of electromagnetic attraction units. The electromagnetic attraction unit comprises a fixed plate and a plug-in electromagnet. The fixed plate is installed around the outer surface of the rotating drum. The middle part of the fixed plate is provided with a socket. The plug-in electromagnet is inserted into the rotating drum through the socket. The plug-in electromagnet is sleeved on the fixed plate and connected with it through sliding. The side surface of the screening cylinder is provided with a first discharge port, and the bottom is provided with a second discharge port.
[0005] Further, one end of the plug-in electromagnet is provided with a first contact. A power supply cable is arranged in the rotating drum. The power supply cable is externally provided with a plurality of second contacts adapted to the first contact.
[0006] Further, a first baffle is arranged at the first discharge port and connected with the inner wall of the screening cylinder. A second baffle is arranged at the second discharge port, and the second baffle protrudes outward along the radial direction of the screening cylinder.
[0007] Further, the first baffle and the second baffle are arranged along the circumferential direction of the screening cylinder.
[0008] Further, the first baffle is arranged at the middle part of the first discharge port, and the second baffle is arranged at the middle part of the second discharge port.
[0009] Furthermore, a material distribution cone plate is provided below the crushing roller assembly, and the material distribution cone plate is located below the receiving hopper.
[0010] Furthermore, the top of the receiving hopper is provided with a cooling air chamber for material passage.
[0011] Furthermore, the front end of the electromagnet is arc-shaped.
[0012] The technical solution of this utility model has at least the following advantages and beneficial effects: This utility model controls the magnetic force by setting the contact and separation between the first contact and the second contact of the electromagnet in the rotating state. When it is energized and has a magnetic attraction effect, it separates plastic and metal, resulting in good overall separation effect, high operating efficiency, and greatly reducing the difficulty of subsequent further crushing. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the plastic parts crushing device for recycling waste electrical appliances according to this utility model.
[0014] Figure 2 This is a schematic diagram of the structure of the electromagnet located at the bottom of the screening cylinder in this utility model when the first contact and the second contact are separated and de-energized.
[0015] Figure 3 This is a schematic diagram of the electromagnetic attraction unit installed on the rotating drum in this utility model.
[0016] Figure 4 This is a schematic diagram of the cooperation structure between the insert electromagnet and the fixing plate in this utility model;
[0017] Figure 5 This is a schematic diagram of the structure of the first and second baffles at the screening cylinder.
[0018] Reference numerals: 1-Receiving hopper, 2-Crushing roller assembly, 3-Screening cylinder, 31-First discharge port, 32-Second discharge port, 33-Second baffle, 34-First baffle, 4-Electromagnetic suction unit, 41-Fixing plate, 411-Insert port, 42-Insert plate electromagnet, 421-First contact, 5-Rotating drum, 6-Power supply cable, 61-Second contact, 7-Distribution cone plate, 8-Refrigeration air chamber. Detailed Implementation
[0019] The specific implementation method is described below with reference to the accompanying drawings.
[0020] Specific implementation of the attached drawings.
[0021] Specific embodiments of the accompanying drawings
[0022] The following will be further illustrated in connection with specific embodiments, with reference to Figures 1-5 As shown in the drawings, the embodiment is a plastic part crushing device for waste electrical appliance recycling, which comprises a receiving hopper 1 and at least one set of crushing roller assembly 2. The bottom of the receiving hopper 1 is connected with a screening cylinder 3, the middle part of the screening cylinder 3 is provided with a rotating drum 5, and the outer edge surface of the rotating drum 5 is uniformly provided with a plurality of electromagnetic suction units 4. The electromagnetic suction unit 4 comprises a fixed plate 41 and a plug-in plate electromagnet 42. The fixed plate 41 is installed around the outer surface of the rotating drum 5, and the middle part of the fixed plate 41 is provided with a socket 411. The plug-in plate electromagnet 42 is inserted into the rotating drum 5 through the socket 411, and the plug-in plate electromagnet 42 is sleeved on the fixed plate 41 and connected with it in sliding mode. The side surface of the screening cylinder 3 is provided with a first discharge port 31, and the bottom thereof is provided with a second discharge port 32. Specifically, the plastic parts are thrown into the receiving hopper 1 through the upper end of the receiving hopper 1 and are crushed into smaller plastic parts by the crushing roller assembly 2. The mixture of metal and plastic falls into the screening cylinder 3. At this moment, the plug-in plate electromagnet 42 is electrified, the front end of the plug-in plate electromagnet 42 is attached to the inner wall of the screening cylinder 3, and the plurality of plug-in plate electromagnets 42 divide the screening cylinder 3 into a plurality of compartments. This compartment can store materials, and the materials will be shaved in the rotating process of the rotating drum 5. The metal is adsorbed on the plug-in plate electromagnet 42. When the electromagnetic suction unit 4 turns to the first discharge port 31, the plastic located in the compartment formed by the two plug-in plate electromagnets 42 is discharged from the first discharge port 31 along the inclined surface, while the metal part still remains adsorbed on the plug-in plate electromagnet 42. When the plug-in plate electromagnet 42 turns to the second discharge port 32, it is de-energized. Under the condition of losing magnetic force, the metal automatically falls into the second discharge port 32 and is discharged, and the screening is completed.
[0023] Refer to Figure 3As shown, in this embodiment, one end of the insert electromagnet 42 is provided with a first contact 421; the rotating drum 5 is provided with a power supply cable 6, and the outside of the power supply cable 6 is provided with a plurality of second contacts 61 adapted to the first contact 421; a first baffle 34 connected to the inner wall of the screening drum 3 is provided at the first discharge port 31, and a second baffle 33 is provided at the second discharge port 32, and the second baffle 33 protrudes outward along the radial direction of the screening drum 3; specifically, when the insert electromagnet 42 rotates to the first discharge port 31, since the first baffle 34 has the same curvature as the inner wall of the screening drum 3, the first baffle 34 abuts against the insert electromagnet 42, and the first contact 421 and the second contact 61 are connected. Point 61 is in the ON state, and the insert electromagnet 42 has magnetic force. When the insert electromagnet 42 rotates to the second discharge port 32, the second baffle 33 protrudes downward and its two ends are in contact with the edge of the second discharge port 32. Therefore, the insert electromagnet 42 and the second baffle 33 are not in contact. Under the action of gravity, the insert electromagnet 42 falls a distance along the fixed plate 41 and contacts the second baffle 33. The first contact 421 and the second contact 61 separate, so that the insert electromagnet 42 is de-energized, loses magnetic force, and separates from the metal. However, after continuing to rotate along the second baffle 33 to the inner wall of the screening cylinder 3, the first contact 421 and the second contact 61 will contact again and restore the power supply.
[0024] like Figure 5 As shown, in order to adapt to the rotation direction of the plate electromagnet 42, the first baffle 34 and the second baffle 33 are arranged in the circumferential direction of the screening cylinder 3.
[0025] Even better, the first baffle 34 is located in the middle of the first discharge port 31, and the second baffle 33 is located in the middle of the second discharge port 32. Then the first baffle 34 and the second baffle 33 act at the middle position of the insert electromagnet 42, and the material can be discharged from the gap between the first baffle 34 and the second baffle 33.
[0026] Reference Figure 1 As shown, in this embodiment, a material distribution cone plate 7 is provided below the crushing roller assembly 2, and the material distribution cone plate 7 is located below the receiving hopper 1; specifically, in order to break up the crushed plastic, increase the contact effect between the metal and the electromagnet 42, and reduce the leakage rate.
[0027] In addition, such as Figure 1 As shown, a cooling chamber 8 for material passage is provided at the top of the receiving hopper 1; specifically, when the plastic to be crushed is crushed again, it is first processed by the low temperature gas of the cooling chamber 8, so that the temperature of the plastic itself is lower, making it brittle and easier to crush.
[0028] To ensure better contact between the electromagnet 42 and the inner wall of the screening cylinder 3, the front end of the electromagnet 42 is designed to be arc-shaped.
[0029] The above merely is preferred embodiment of the present utility model, and is not used to limit the present utility model, for the person skilled in the art, the present utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the present utility model should be contained in the protection scope of the present utility model.
Claims
1. A plastic piece crushing device for waste electrical appliance recycling, comprising a material receiving hopper (1) and at least one set of crushing roller assemblies (2), characterized in that: The bottom of the receiving hopper (1) is connected with a screening cylinder (3), the middle part of the screening cylinder (3) is provided with a rotating cylinder (5), and the outer edge surface of the rotating cylinder (5) is uniformly provided with a plurality of electromagnetic suction units (4); The electromagnetic suction unit (4) comprises a fixed plate (41) and a plug-in plate electromagnet (42), the fixed plate (41) is installed around the outer surface of the rotating cylinder (5), and the middle part of the fixed plate (41) is provided with a socket (411); the plug-in plate electromagnet (42) is inserted into the rotating cylinder (5) through the socket (411), and the plug-in plate electromagnet (42) is sleeved on the fixed plate (41) and connected with the fixed plate (41) in sliding mode; The side surface of the screening cylinder (3) is provided with a first discharge port (31), and the bottom is provided with a second discharge port (32).
2. The plastic piece shredding device for waste old electric appliances recycling according to claim 1, characterized in that: One end of the plug-in plate electromagnet (42) is provided with a first contact (421); The rotating cylinder (5) is provided with a power cable (6), and the outer part of the power cable (6) is provided with a plurality of second contacts (61) matched with the first contact (421).
3. The plastic piece shredding device for waste old electric appliances recycling as claimed in claim 1 wherein: The first discharge port (31) is provided with a first baffle (34) connected with the inner wall of the screening cylinder (3), the second discharge port (32) is provided with a second baffle (33), and the second baffle (33) protrudes outward along the radial direction of the screening cylinder (3).
4. The plastic piece shredding device for waste old electric appliances recycling according to claim 3, characterized in that: The first baffle (34) and the second baffle (33) are arranged along the circumferential direction of the screening cylinder (3).
5. The plastic piece shredding device for waste old electric appliances recycling according to claim 4, characterized in that: The first baffle (34) is arranged in the middle part of the first discharge port (31), and the second baffle (33) is arranged in the middle part of the second discharge port (32).
6. The plastic piece shredding device for waste old electric appliances recycling as claimed in claim 1 wherein: The lower part of the crushing roller assembly (2) is provided with a distribution cone plate (7), and the distribution cone plate (7) is arranged below the receiving hopper (1).
7. The plastic piece shredding device for waste old electric appliances recycling as claimed in claim 1 wherein: The top of the receiving hopper (1) is provided with a refrigeration air warehouse (8) for material passing.
8. The plastic piece shredding device for waste old electric appliances recycling as claimed in claim 1 wherein: The front end of the plug-in plate electromagnet (42) is in arc shape.