Comprehensive raw material screening and mixing device for PPS composite material

Abstract

The utility model discloses a raw material comprehensive screening and mixing device for a PPS composite material, relates to the technical field of raw material screening and mixing, and solves the problem that a screening and mixing process in the prior art needs to be carried out step by step, otherwise, a filler agglomeration phenomenon easily occurs in the mixing process. The comprehensive raw material screening and mixing device for the PPS composite material comprises a magnetic stirring device, a mixing barrel is connected to the magnetic stirring device, the upper end of the mixing barrel is sequentially connected with a second screening barrel, a first screening barrel and a cover body, the outer side wall of the first screening barrel communicates with a first feeding assembly, and the outer side wall of the second screening barrel communicates with a second feeding assembly; a rectangular through groove is formed in the bottom of the first screening barrel, and screening plates are connected to the two sides, corresponding to the rectangular through groove, of the bottom of the first screening barrel; the outer side wall of the second screening barrel communicates with a second feeding assembly, and a screen is slidably connected to the second feeding assembly. The device has the beneficial effects that different raw materials can be screened respectively, uniform dispersion of filler in a matrix is realized, and the performance of a composite material is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of raw material screening and mixing, in particular to a raw material comprehensive screening and mixing device for a PPS composite material. Background Art

[0002] With the continuous advancement of science and technology, polyphenylene sulfide (PPS) has been rapidly developed due to its excellent comprehensive performance. Polyphenylene sulfide is a semi-crystalline polymer with high strength, modulus and excellent combustion performance; PPS products have good creep resistance and low linear expansion coefficient; good dimensional stability and low molding shrinkage. PPS resin has extremely low water absorption, and its volume resistivity changes little under high temperature and high humidity conditions. Its dielectric constant changes little with temperature and frequency, so it is suitable for products with extremely strict electrical performance requirements and is an excellent electrical insulation material.

[0003] Although PPS composites have many advantages, in some special application scenarios, such as electronic components that require good conductivity, pure PPS materials cannot meet the requirements due to their own non-conductivity, so conductive fillers or modifiers, such as carbon nanotubes and graphene, need to be added to PPS to improve its conductivity. Polyphenylene sulfide (PPS) composites achieve complementary and optimized performance by combining materials of different properties, thereby meeting various complex and special application requirements. Therefore, the demand for polyphenylene sulfide composites has been growing continuously.

[0004] In the preparation process of PPS composite materials, the screening and mixing of raw materials are crucial. The screening of raw materials must ensure that the purity and particle size distribution of the filler meet specific requirements to ensure the performance stability of the composite material; the mixing process must ensure that the filler is evenly dispersed in the PPS matrix to avoid agglomeration, thereby achieving the corresponding performance.

[0005] The comprehensive screening and mixing process of raw materials for existing PPS composite materials needs to be carried out step by step, otherwise filler agglomeration is likely to occur during the mixing process, affecting the performance of the composite material. Screening and mixing are difficult to achieve continuousness and have low efficiency.

[0006] Therefore, the utility model proposes a raw material comprehensive screening and mixing device for PPS composite materials, which is used to solve the above problems. Utility Model Content

[0007] The utility model aims to provide a raw material comprehensive screening and mixing device for PPS composite materials, which is used to solve the problem in the prior art that the screening and mixing process needs to be carried out step by step, otherwise filler agglomeration is likely to occur during the mixing process, making it difficult to achieve continuity.

[0008] The technical solution adopted by the utility model to solve its technical problems is:

[0009] A raw material comprehensive screening and mixing device for PPS composite materials, comprising a magnetic stirring device, the magnetic stirring device is connected to a mixing barrel, the upper end of the mixing barrel is sequentially connected to a second screening barrel, a first screening barrel and a cover body, the outer wall of the first screening barrel is connected to a first feeding assembly, the bottom of the first screening barrel is provided with a rectangular through groove, the bottom of the first screening barrel is connected to screening plates on both sides corresponding to the rectangular through groove, the upper end of the rectangular through groove is provided with a stirring rod, the stirring rod is rotated in the first screening barrel by a driving motor, and the driving motor is fixedly connected to the cover body; the bottom of the second screening barrel is through-set, the outer wall of the second screening barrel is connected to a second feeding assembly, and a screen is slidably connected to the second feeding assembly; a fixing frame is provided on the outer peripheral side of the mixing barrel, the fixing frame is fixedly connected to the magnetic stirring device, a sliding plate is slidably connected to the fixing frame, the sliding plate is abutted and fixed to the fixing frame by bolts, and the lower end of the sliding plate is symmetrically connected to two groups of pressing assemblies.

[0010] By adopting the above technical solution, the purity of the raw materials can be improved, the filler can be evenly dispersed in the matrix, agglomeration can be avoided, and the performance of the composite material can be improved.

[0011] Furthermore, a fixing plate is connected to the bottom of the fixing frame, and the mixing barrel is clamped in the fixing plate.

[0012] By adopting the above technical solution, the mixing barrel can be stably clamped in the fixing plate, thereby ensuring the stability of the mixing barrel during the mixing process and preventing it from shifting or shaking.

[0013] Furthermore, a discharge port is provided at the bottom of the mixing barrel, a baffle plate is rotatably connected in the discharge port, the baffle plate rotates with the mixing barrel through a worm gear transmission, and a hexagon socket bolt is connected to the end of the worm.

[0014] Furthermore, the bottom of the mixing barrel is configured in a conical shape.

[0015] By adopting the above technical solution, the raw materials can be guided to gather toward the discharge port, thereby improving the discharge efficiency.

[0016] Furthermore, the bottom of the first feeding component is inclined, and a plurality of filter holes are evenly distributed on the bottom of the first feeding component. The lower end of the first feeding component is slidably connected to a dust removal box, and the dust removal box is connected to a dust suction port.

[0017] By adopting the above technical solution, impurities and unqualified particles in the raw materials can be preliminarily screened out during the sliding process of the raw materials, and the dust in the raw materials can be sucked out through the dust suction port, thereby reducing pollution to the working environment.

[0018] Furthermore, the second feeding assembly is connected to a vibrating screen motor.

[0019] By adopting the above technical solution, the screening effect can be improved, the purity of the raw materials can be ensured, and the agglomeration of fillers in the process of mixing composite materials can be avoided.

[0020] Furthermore, a first sealing strip is provided between the mixing barrel and the second screening barrel; a second sealing strip is provided between the second screening barrel and the first screening barrel; and a third sealing strip is provided between the first screening barrel and the cover body.

[0021] By adopting the above technical solution, the sealing performance of the device can be enhanced and a tight connection between the components can be ensured.

[0022] Furthermore, the pressing assembly includes a shell, the shell is fixedly connected to the sliding plate, an abutment is slidably connected inside the shell, and a return spring is provided between the abutment and the shell.

[0023] By adopting the above technical solution, a certain pressure can be applied to the cover body to ensure the stability and sealing of the mixing barrel during the mixing process.

[0024] In summary, compared with the prior art, the utility model has the following beneficial effects:

[0025] The utility model can screen the PPS composite material raw material through the first screening barrel and the second screening barrel, remove impurities and unqualified particles in the raw material, and thus improve the purity of the raw material. Then the raw material falls into the magnetic field mixing device, and the magnetic field mixing can achieve uniform dispersion of the filler in the matrix, especially the conductive filler, thereby avoiding agglomeration and improving the performance of the composite material. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a vertical schematic diagram of the utility model;

[0027] Figure 2 It is a top view of the utility model;

[0028] Figure 3 It is a partial cross-sectional schematic diagram of the main view of the utility model;

[0029] Figure 4 It is a partial cross-sectional schematic diagram of the right side view of the utility model;

[0030] In the figure: 1. magnetic stirring device; 2. mixing barrel; 3. discharge port; 4. baffle plate; 6. worm gear; 7. second screening barrel; 8. second feeding assembly; 9. sieve; 10. vibrating screen motor; 11. first screening barrel; 12. rectangular through groove; 13. screening plate; 14. stirring rod; 15. driving motor; 16. first feeding assembly; 17. filter hole; 18. dust removal box; 19. dust suction port; 20. cover body; 21. fixing frame; 22. sliding plate; 23. bolt; 24. pressing assembly; 25. shell; 26. abutment; 27. return spring; 28. fixing plate; 29. ​​first sealing strip; 30. second sealing strip; 31. third sealing strip. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In this application, the directions or positional relationships indicated by the terms "upper", "inner", "outer", "middle", etc. are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0033] Figure 1 As shown, a raw material comprehensive screening and mixing device for PPS composite material includes a magnetic stirring device 1, a mixing barrel 2 is connected to the magnetic stirring device 1, and the upper end of the mixing barrel 2 is sequentially connected to a second screening barrel 7, a first screening barrel 11 and a cover 20. Then the first screening barrel 11 and the second screening barrel 7 can screen the raw material of the PPS composite material, remove impurities and unqualified particles in the raw material, and then improve the purity of the raw material, and then the raw material falls into the magnetic stirring device 1, and the magnetic stirring device 1 can achieve uniform dispersion of the filler in the matrix, especially the conductive filler, to avoid agglomeration and improve the performance of the composite material.

[0034] like Figure 2 and Figure 4As shown, the outer wall of the first screening barrel 11 is connected to the first feeding assembly 16, the bottom of the first feeding assembly 16 is inclined, and a plurality of filter holes 17 are evenly arranged at the bottom of the first feeding assembly 16, and the lower end of the first feeding assembly 16 is slidably connected to a dust removal box 18, and the dust removal box 18 is connected to a dust suction port 19. The inclined design of the bottom of the first feeding assembly 16 helps the raw materials with larger diameters to slide naturally and reduce blockage, so that the filter holes can preliminarily screen out impurities and unqualified particles in the raw materials during the sliding process, and then fall into the dust removal box 18, and the dust removal box 18 can be pulled out from the bottom of the feeding assembly for easy cleaning and maintenance, and the dust removal box 18 is connected to a dust suction port 19, which can suck out the dust in the raw materials through the dust suction port 19, thereby reducing the pollution of the working environment. A rectangular through slot 12 is provided at the bottom of the first screening barrel 11, and screening plates 13 are connected to both sides of the rectangular through slot 12 at the bottom of the first screening barrel 11, and a stirring rod 14 is provided at the upper end of the rectangular through slot 12. The stirring rod 14 is rotated in the first screening barrel 11 by a driving motor 15, and the driving motor 15 is fixedly connected to the cover body 20; then the raw material falls onto the screening plate 13, and the screening plate 13 is used to further screen out particles smaller than a set size to ensure that the size of the raw material is uniform, and then the driving motor 15 drives the stirring rod 14 to rotate in the first screening barrel 11, and the stirring rod 14 can push the raw material into the mixing barrel 2 through the rectangular through slot 12.

[0035] like Figure 2 and Figure 3 As shown, the bottom of the second screening barrel 7 is through-set, and the outer wall of the second screening barrel 7 is connected to the second feeding assembly 8, and the screen 9 is slidably connected to the second feeding assembly 8, and the second feeding assembly 8 is connected to the vibrating screen motor 10. Then the powdered raw material or small particle filler enters the second screening barrel 7 through the second feeding assembly 8, and is screened on the screen 9. Unqualified particles and impurities will be blocked by the screen 9 and remain above the screen 9, and then qualified raw materials flow into the bottom of the second screening barrel 7 through the screen 9, and flow into the mixing barrel 2 through the through bottom opening. At the same time, the vibration of the vibrating screen motor 10 can improve the screening effect, ensure the purity of the raw materials, and avoid the agglomeration of fillers during the mixing process of composite materials.

[0036] A fixing frame 21 is provided on the outer peripheral side of the mixing barrel 2, and the fixing frame 21 is fixedly connected to the magnetic stirring device 1. A sliding plate 22 is slidably connected to the fixing frame 21, and the sliding plate 22 is fixed by abutting against the fixing frame 21 through bolts 23, so that the sliding plate 22 can be moved on the fixing frame 21 according to work requirements, and is fixed by abutting against the fixing frame 21 through bolts 23, so as to facilitate the adjustment of the position of the sliding plate 22 and lock its position. Two groups of pressing components 24 are symmetrically connected to the lower end of the sliding plate 22. The pressing component 24 includes a shell 25, which is fixedly connected to the sliding plate 22, and an abutment 26 is slidably connected in the shell 25, and a return spring 27 is provided between the abutment 26 and the shell 25. Then, when the abutment 26 moves downward, a certain pressure can be applied to the cover 20 to ensure the stability and sealing of the mixing barrel 2 during the mixing process. A fixing plate 28 is connected to the bottom of the fixing frame 21, and the mixing barrel 2 is clamped in the fixing plate 28. Therefore, the mixing barrel 2 can be stably clamped in the fixing plate 28, thereby ensuring the stability of the mixing barrel 2 during the mixing process and preventing it from shifting or shaking.

[0037] like Figure 3 and Figure 4 As shown, a discharge port 3 is provided at the bottom of the mixing barrel 2, and a baffle plate 4 is rotatably connected in the discharge port 3. The baffle plate 4 rotates with the mixing barrel 2 through a worm gear 6, and a hexagon socket bolt 23 is connected to the end of the worm. The bottom of the mixing barrel 2 is set in a conical shape. This facilitates the unloading of the mixed raw materials. When the materials need to be discharged, the hexagon socket bolt 23 is rotated by a tool to drive the worm and the worm gear to rotate, so that the baffle plate 4 is gradually opened, and the raw materials are discharged from the discharge port 3 under the action of gravity and stirring; when the discharge is completed, the hexagon socket bolt 23 is rotated in the opposite direction, so that the baffle plate 4 covers the discharge port 3 again to prevent the raw materials from accidentally flowing out. At the same time, the conical bottom can guide the raw materials to gather at the discharge port 3, thereby improving the efficiency of the discharge.

[0038] A first sealing strip 29 is provided between the mixing barrel 2 and the second screening barrel 7; a second sealing strip 30 is provided between the second screening barrel 7 and the first screening barrel 11; and a third sealing strip 31 is provided between the first screening barrel 11 and the cover 20. This enhances the sealing performance of the device, ensures the tight connection between the components, ensures the safety and stability of the raw materials during the screening and mixing process, and facilitates the cleaning and maintenance of the device.

[0039] The working process of the utility model is:

[0040] First, the raw materials with larger diameters slide naturally through the inclination of the bottom of the first feeding assembly 16. The filter holes can preliminarily screen out impurities and unqualified particles in the raw materials during the sliding process, and then fall into the dust removal box 18. The dust removal box 18 can be drawn out from the bottom of the feeding assembly. The dust removal box 18 is connected with a dust suction port 19, which can suck out the dust in the raw materials through the dust suction port 19. Then the raw materials fall on the screening plate 13, which is used to further screen out particles smaller than the set size to ensure that the size of the raw materials is uniform. Then the driving motor 15 drives the stirring rod 14 to rotate in the first screening barrel 11, and the stirring rod 14 can push the raw materials into the mixing barrel 2 through the rectangular through groove 12. Then the powdered raw materials or small particle fillers enter the second screening barrel 7 through the second feeding assembly 8 and are screened on the screen 9. Unqualified particles and impurities will be blocked by the screen 9 and remain above the screen 9. Then the qualified raw materials flow into the bottom of the second screening barrel 7 through the screen 9 and flow into the mixing barrel 2 through the through bottom opening. The magnetic stirring device 1 can achieve uniform dispersion of the filler in the matrix. The mixing barrel 2 is disassembled, and the hexagon socket bolt 23 is rotated with a tool to drive the worm and the worm gear to rotate, so that the baffle plate 4 is gradually opened, and the raw materials are discharged from the discharge port 3 under the action of gravity and stirring.

Claims

1. A raw material comprehensive screening and mixing device for PPS composite materials, comprising a magnetic stirring device (1), characterized in that: The magnetic stirring device (1) is connected to a mixing barrel (2), the upper end of the mixing barrel (2) is sequentially connected to a second screening barrel (7), a first screening barrel (11) and a cover body (20), the outer wall of the first screening barrel (11) is connected to a first feeding assembly (16), a rectangular through groove (12) is provided at the bottom of the first screening barrel (11), screening plates (13) are connected to both sides of the bottom of the first screening barrel (11) corresponding to the rectangular through groove (12), a stirring rod (14) is provided at the upper end of the rectangular through groove (12), the stirring rod (14) is rotated in the first screening barrel (11) by a driving motor (15), and the driving motor (15) is driven by the stirring rod (14) to rotate in the first screening barrel (11), and the driving motor (15) is driven by the stirring rod (14) to rotate in the first screening barrel (11). The motor (15) is fixedly connected to the cover body (20); the bottom of the second screening barrel (7) is through-type, the outer wall of the second screening barrel (7) is connected to the second feeding assembly (8), and the second feeding assembly (8) is slidably connected to the screen (9); a fixing frame (21) is provided on the outer peripheral side of the mixing barrel (2), the fixing frame (21) is fixedly connected to the magnetic stirring device (1), a sliding plate (22) is slidably connected to the fixing frame (21), the sliding plate (22) is abutted and fixed to the fixing frame (21) by bolts (23), and the lower end of the sliding plate (22) is symmetrically connected to two groups of pressing assemblies (24).

2. The raw material comprehensive screening and mixing device of a PPS composite material according to claim 1, characterized in that: The bottom of the fixing frame (21) is connected to a fixing plate (28), and the mixing barrel (2) is clamped in the fixing plate (28).

3. The raw material comprehensive screening and mixing device of a PPS composite material according to claim 1, characterized in that: The mixing barrel (2) is provided with a discharge port (3) at the bottom thereof, a baffle plate (4) being rotatably connected to the discharge port (3), the baffle plate (4) being rotatable with the mixing barrel (2) via a worm gear (6), and a hexagon socket head bolt (23) being connected to the end of the worm gear.

4. The raw material comprehensive screening and mixing device of a PPS composite material according to claim 1, characterized in that: The bottom of the mixing barrel (2) is arranged in a conical shape.

5. The raw material comprehensive screening and mixing device of a PPS composite material according to claim 1, characterized in that: The bottom of the first feeding component (16) is arranged at an angle, and a plurality of filter holes (17) are evenly distributed on the bottom of the first feeding component (16). The lower end of the first feeding component (16) is slidably connected to a dust removal box (18), and the dust removal box (18) is connected to a dust suction port (19).

6. The raw material comprehensive screening and mixing device of a PPS composite material according to claim 1, characterized in that: The second feeding assembly (8) is connected to a vibrating screen motor (10).

7. The raw material comprehensive screening and mixing device of a PPS composite material according to claim 1 is characterized in that: A first sealing strip (29) is provided between the mixing barrel (2) and the second screening barrel (7); a second sealing strip (30) is provided between the second screening barrel (7) and the first screening barrel (11); and a third sealing strip (31) is provided between the first screening barrel (11) and the cover body (20).

8. The raw material comprehensive screening and mixing device of a PPS composite material according to claim 1 is characterized in that: The pressing assembly (24) comprises a shell (25), the shell (25) is fixedly connected to the sliding plate (22), an abutment member (26) is slidingly connected inside the shell (25), and a return spring (27) is provided between the abutment member (26) and the shell (25).

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