Metal impurity removal magnetic separator for phenolic moulding plastic production
By adopting a soft magnetic conveyor belt and scraper structure in the production of phenolic molding compounds, the problem of incomplete removal of metal impurities from crushed particles has been solved, achieving efficient removal of metal impurities and stable operation of the equipment.
Patent Information
- Application Number
- CN202423273588.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In the current production process of phenolic molding compounds, the removal of metallic impurities from the crushed particles is incomplete, and the magnetic adsorption structure is easily covered, leading to frequent cleaning and affecting production efficiency.
The machine uses a soft magnetic conveyor belt and scraper structure inside the casing. The soft magnetic material adsorbs and scrapes off metal debris, achieving uniform material dispersion and effective removal of metal impurities. The material is collected using a receiving box and a metal slag receiving box.
It achieves efficient removal of metal impurities, reduces cleaning frequency, and improves production efficiency and equipment lifespan.
Smart Images

Figure CN223761195U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of magnetic separators for removing metal impurities in the production of phenolic molding compounds, and more specifically, to a magnetic separator for removing metal impurities in the production of phenolic molding compounds. Background Technology
[0002] Phenolic molding compound is a thermosetting plastic with high dimensional stability, resistance to extreme high temperature and humidity environments, chemical corrosion resistance and high mechanical strength. It is mainly composed of phenolic resin, fillers and other additives. Phenolic resin is used as a binder, and fillers such as wood flour, mica, calcium carbonate and glass fiber are used to enhance the performance of the material.
[0003] Phenolic molding compounds are widely used in automotive motors, power tools, and household appliances. During the preparation of phenolic molding compounds, the phenolic resin is in a non-sticky solid or semi-solid state at room temperature and pressure, but it exhibits good flowability under compression, allowing it to uniformly fill the mold cavity. Reinforcing materials, such as fibrous materials or chopped fiber mats, act as a skeleton, improving the material's mechanical properties. Auxiliary agents, such as glass fiber surface treatment agents, fillers, diluents, and release agents, are used to improve the adhesion between the resin and the reinforcing materials, reduce resin viscosity, and improve impregnation performance. These characteristics of phenolic molding compounds make them excellent for applications requiring high strength and corrosion resistance, thus leading to their widespread use in electronics, automotive, and household appliances.
[0004] The production of phenolic molding compounds requires mixing various raw materials together, then extruding and mixing these materials into hard sheets, followed by cooling and crushing. After crushing and grading, the product usually contains some metal impurities, which need to be separated during later processing. Therefore, a magnetic separator for removing iron filings is required.
[0005] Current magnetic separators for phenolic molding compounds require a conveying device to push the crushed particles to passively contact the magnetic adsorption structure when removing metal impurities. However, the movement within the crushed particles is still uneven, resulting in some particles not making contact with the magnetic adsorption structure. This leads to incomplete removal of metal impurities, and the surface of these magnetic adsorption structures is quickly covered by metal impurities, affecting the falling of the crushed particles and requiring frequent cleaning. Therefore, a magnetic separator for removing metal impurities in phenolic molding compound production is proposed to solve the above problems. Utility Model Content
[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a magnetic separator for removing metal impurities in the production of phenolic molding compounds. The material is fed through the casing, and the material is dispersed on the surface of the soft magnetic conveyor belt at the bottom. The soft magnetic material adsorbs metal debris, and the phenolic molding compound can fall into the receiving box. The metal debris passes through the soft magnetic conveyor belt and scraper before falling into the metal slag receiving box at the bottom. The demagnetization is convenient.
[0007] To solve the above problems, the present invention adopts the following technical solution.
[0008] A magnetic separator for removing metal impurities in phenolic molding compound production includes a casing. A conveyor roller is mounted on the inner surface of the casing, and a soft magnetic conveyor belt is mounted on the outer surface of the conveyor roller. A support plate is mounted on the lower surface of the casing. A transverse support plate is fixed to the inner surface of the support plate. A receiving box is placed on the upper surface of the transverse support plate, positioned on one side of the upper surface. A metal slag receiving box is fixedly connected to the upper surface of the transverse support plate, positioned on the other side of the upper surface. A scraper is fixedly connected to the inner surface of the metal slag receiving box, with its upper surface adhering to the lower surface of the soft magnetic conveyor belt. Material is fed through the casing, dispersing onto the surface of the soft magnetic conveyor belt at the bottom. Metal debris is adsorbed by the soft magnet, and the phenolic molding compound falls into the receiving box. The metal debris, after passing through the soft magnetic conveyor belt and the scraper, falls into the metal slag receiving box at the bottom, facilitating demagnetization.
[0009] Furthermore, an opening is provided on the surface of one side support plate of the chassis, and the receiving box is placed on the upper surface of the transverse support plate along the opening.
[0010] Furthermore, a first guide plate and a second guide plate are fixedly connected to the upper inner surface of the chassis. The first guide plate is obliquely distributed at the left and right ends of the inner surface of the chassis, and the second guide plate is located in the middle of the first guide plate.
[0011] Furthermore, a centralized guide plate is fixedly connected to the inner surface of the chassis, and the centralized guide plate is distributed and fixed on the inner end surfaces of the left and right sides of the chassis.
[0012] Furthermore, a drive motor is provided at the outer end of the chassis, and the drive motor is connected to the conveyor roller.
[0013] Furthermore, the receiving box and the metal slag receiving box are made of plastic, and their lower surfaces are covered with a rubber layer.
[0014] Furthermore, the upper surface of the scraper is provided with an inclined cut, which is attached to the lower surface of the soft magnetic conveyor belt, and the scraper is made of plastic.
[0015] Compared with existing technologies, the advantages of this utility model are:
[0016] (1) The material is fed through the machine box and dispersed on the surface of the soft magnetic conveyor belt at the bottom. The soft magnetic material adsorbs the metal debris. The phenolic molding compound can fall into the receiving box. The metal debris falls into the metal slag receiving box at the bottom after passing through the scraper on the soft magnetic conveyor belt. The demagnetization is convenient. Attached Figure Description
[0017] Figure 1 This is a first schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a second schematic diagram of the overall structure of this utility model;
[0019] Figure 3 This is a third schematic diagram of the overall structure of this utility model;
[0020] Figure 4 This is a schematic cross-sectional view of the overall structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the metal slag receiving box of this utility model.
[0022] Explanation of the labels in the diagram:
[0023] 1. Chassis, 2. Conveying roller, 3. Soft magnetic conveyor belt, 4. Horizontal support plate, 5. Receiving box, 6. Metal slag receiving box, 7. Scraper, 8. First guide plate, 9. Second guide plate, 10. Central guide plate. Detailed Implementation
[0024] 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.
[0025] Example 1: Please refer to Figure 1-5A magnetic separator for removing metal impurities in phenolic molding compound production includes a casing 1. A conveyor roller 2 is mounted on the inner surface of the casing 1, and a soft magnetic conveyor belt 3 is mounted on the outer surface of the conveyor roller 2. A support plate base 100 is mounted on the lower surface of the casing 1. A transverse support plate 4 is fixed to the inner surface of the support plate base 100. A receiving box 5 is placed on the upper surface of the transverse support plate 4, positioned on one side of the upper surface. A metal slag receiving box 6 is fixedly connected to the upper surface of the transverse support plate 4. The metal slag receiving box 6 is placed on the upper surface of the other side of the transverse support plate 4. A scraper 7 is fixedly connected to the inner surface of the metal slag receiving box 6. The upper surface of the scraper 7 is attached to the lower surface of the soft magnetic conveyor belt 3. The material is fed through the machine box and dispersed on the surface of the soft magnetic conveyor belt at the bottom. The soft magnet adsorbs the metal debris. The phenolic molding compound can fall into the receiving box. The metal debris falls into the metal slag receiving box at the bottom after passing through the scraper on the soft magnetic conveyor belt. The demagnetization is convenient.
[0026] An opening is provided on the surface of the support plate 100 on one side of the chassis 1, and the receiving box 5 is placed on the upper surface of the horizontal support plate 4 along the opening; this makes it easy to place the receiving box 5 along the opening and to take it out and put it in.
[0027] A first guide plate 8 and a second guide plate 9 are fixedly connected to the upper inner surface of the housing 1. The first guide plate 8 is inclinedly distributed at the left and right ends of the inner surface of the housing 1, and the second guide plate 9 is located in the middle of the first guide plate 8. This facilitates the dispersion of falling materials and makes them fall more evenly. A centralized guide plate 10 is fixedly connected to the inner surface of the housing 1. The centralized guide plate 10 is distributed and fixed on the inner surfaces of the left and right sides of the housing 1. This facilitates the centralized guidance of materials on both sides and ensures that they fall on the surface of the soft magnetic conveyor belt 3, which is convenient for receiving and sorting materials.
[0028] A drive motor is installed at the outer end of the casing 1, and the drive motor is connected to the conveyor roller 2; this facilitates the motor to drive the conveyor roller 2 (existing drive technology).
[0029] The receiving box 5 and the metal slag receiving box 6 are made of plastic, and their lower surfaces are covered with a rubber layer. When placed, the rubber layer adheres to the surface of the horizontal support plate 4, increasing friction and making the placement stable.
[0030] The upper surface of the scraper 7 is provided with an inclined cut, and the inclined cut is attached to the lower surface of the soft magnetic conveyor belt 3. The scraper 7 is made of plastic material; so that when the soft magnetic conveyor belt 3 passes by, the metal debris adsorbed by the scraper 7 can be scraped off, making it easy to scrape off the metal debris.
[0031] In use, materials are fed into the machine casing 1, which has conveyor rollers 2 on its inner surface and a soft magnetic conveyor belt 3 on its outer surface. The materials fall evenly onto the surface of the soft magnetic conveyor belt 3 (multiple guide plates guide and disperse the materials as they fall, making them more evenly distributed on the surface of the soft magnetic conveyor belt 3). After passing through the soft magnetic conveyor belt 3, the plastic parts rotate and fall directly into the receiving box 5 at the bottom. Metal debris is adsorbed onto the surface of the soft magnetic conveyor belt 3, and the upper surface of the transverse support plate 4... A metal slag collection box 6 is fixedly connected to the surface of the transverse support plate 4. The metal slag collection box 6 is placed on the upper surface of the other side of the transverse support plate 4. A scraper 7 is fixedly connected to the inner surface of the metal slag collection box 6. The upper surface of the scraper 7 is attached to the lower surface of the soft magnetic conveyor belt 3. The upper surface of the scraper 7 is provided with an inclined cut, and the inclined cut is attached to the lower surface of the soft magnetic conveyor belt 3. The scraper 7 is made of plastic. This facilitates the scraping off of metal debris by the scraper 7 when the soft magnetic conveyor belt 3 passes by. The metal debris can be guided into the metal slag collection box 6 for collection, which is convenient for removing metal impurities during the production of phenolic molding compounds. It is easy to use and has comprehensive adsorption.
[0032] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A metal impurity removal magnetic separator for phenolic molding material production, comprising a cabinet (1), characterized in that: The inner side surface of the case (1) is provided with a conveying roller (2), the outer surface of the conveying roller (2) is provided with a soft magnet conveying belt (3), the lower surface of the case (1) is provided with a support base (100), the inner side surface of the support base (100) is fixed with a transverse support plate (4), the upper surface of the transverse support plate (4) is placed with a receiving box (5), the receiving box (5) is placed on the upper surface of one side of the transverse support plate (4), the upper surface of the transverse support plate (4) is fixedly connected with a metal slag receiving box (6), the metal slag receiving box (6) is placed on the upper surface of the other side of the transverse support plate (4), the inner side surface of the metal slag receiving box (6) is fixedly connected with a scraper (7), and the upper surface of the scraper (7) is attached to the lower surface of the soft magnet conveying belt (3).
2. A metal impurity removal magnetic separator for phenolic molding compound production according to claim 1, characterized in that: The surface of the side support base (100) of the case (1) is provided with an opening, and the receiving box (5) is placed on the upper surface of the transverse support plate (4) along the opening.
3. The metal impurity removal magnetic separator for phenolic molding material production according to claim 1, characterized in that: The upper end inner side surface of the case (1) is fixedly connected with a first guide plate (8) and a second guide plate (9), the first guide plate (8) is obliquely arranged at the left and right ends of the inner side surface of the case (1), and the second guide plate (9) is located in the middle of the first guide plate (8).
4. The metal impurity removal magnetic separator for phenolic molding compound production according to claim 1, characterized in that: The inner side surface of the case (1) is fixedly connected with a concentrated guide plate (10), and the concentrated guide plate (10) is fixedly arranged at the inner end surfaces of the left and right sides of the case (1).
5. The metal impurity removal magnetic separator for phenolic molding compound production according to claim 1, characterized in that: The outer end of the case (1) is provided with a driving motor connected with the conveying roller (2).
6. A metal impurity removal magnetic separator for phenolic molding compound production according to claim 1, characterized in that: The receiving box (5) and the metal slag receiving box (6) are made of plastic box material, and the lower surfaces of the receiving box (5) and the metal slag receiving box (6) are covered with a rubber layer.
7. A metal impurity removal magnetic separator for phenolic molding compound production according to claim 1, characterized in that: The upper surface of the scraper (7) is provided with an inclined cutout, which is attached to the lower surface of the soft magnet conveying belt (3), and the scraper (7) is made of plastic material.