Twin-screw extrusion granulator for producing polyphenylene sulfide composite material

Abstract

The utility model discloses a twin-screw extrusion granulator for producing a polyphenylene sulfide composite material, relates to the technical field of fixing of conveying belts, and solves the problems in the prior art that the temperature of cut particles is higher, and the particles are easy to adhere and deform. The twin-screw extrusion granulator for producing the polyphenylene sulfide composite material comprises a twin-screw extruder, the twin-screw extruder is communicated with a feeding port, the upper end of the feeding port is provided with a feeding device, one end of an extrusion port of the twin-screw extruder is provided with a water cooling box, one end of the water cooling box is provided with a granulator, and the other end of the water cooling box is provided with a water pump. The water cooling box is provided with openings corresponding to the extrusion port and the feeding port; and a cooling box is arranged at the lower end of the granulator. The cooling device has the beneficial effects that materials can be rapidly cooled, and deformation or adhesion of the materials due to high temperature is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of granulator fixing, in particular to a twin-screw extrusion granulator for producing polyphenylene sulfide composite materials. Background Art

[0002] Polyphenylene sulfide (PPS) has a structure of alternating benzene rings and sulfur atoms, and its molecular chain has great rigidity and regularity. 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. Polyphenylene sulfide shows extremely excellent heat resistance among all thermoplastic engineering plastics, with a melting point of 280-290°C. It starts to decompose above 400-430°C in the air, and is stable in air or nitrogen below 400°C, with basically no mass loss. Its thermal stability far exceeds that of engineering plastics such as PA, PBT, POM and PTFE. PPS has excellent chemical corrosion resistance, which is second only to polytetrafluoroethylene, and there is almost no solvent that can dissolve it below 200°C. 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. Therefore, polyphenylene sulfide is widely used in electronics and electrical, automotive industry, machinery industry, military industry, textile, aviation and other fields due to its excellent performance.

[0003] However, with the continuous advancement of science and technology, polyphenylene sulfide (PPS) composites have developed rapidly due to their excellent comprehensive performance. Polyphenylene sulfide (PPS) composites achieve performance complementarity and optimization 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] Twin-screw extruder granulator is one of the key equipment for producing polyphenylene sulfide (PPS) composite materials. Its working principle is to melt and mix solid materials through two rotating screws, and apply continuous pressure to extrude the materials into the desired shape. During the melting and mixing process, the rotation of the screw and the heating or cooling of the barrel work together to break and recombine the bonds between the material molecules, thereby forming a uniform mixture. Through extrusion granulation, particles of uniform size and shape can be obtained, which is convenient for the subsequent processing and use of polyphenylene sulfide (PPS) composite materials.

[0005] The current twin-screw extruder granulator structure is generally as described in the twin-screw extruder granulator disclosed in the patent application number "CN202320486827.2", including: a platform, a rectangular block is fixedly installed on the top of the platform, a motor A is fixedly inserted on one side of the outer wall of the rectangular block, and the output end of the motor A passes through one side of the outer wall of the rectangular block, a granulator body is welded on the top of the platform, and one side of the outer wall of the granulator body is fixedly connected to one side of the outer wall of the rectangular block, a discharge port is fixedly installed on one side of the outer wall of the granulator body, and a rotating shaft A is movably embedded in the interior of the rectangular block. Since a drying chamber is provided, the material can be processed into a particle group by the granulator and then fall into the drying chamber for drying when discharged. First, the motor A is started, and the rotating shaft A is driven to rotate under the operation of the motor A, thereby driving the gear A and the gear B on the rotating shaft A to rotate, thereby also driving the screw A and the screw B to rotate, and then the material is placed in the granulator body. However, this method does not immediately cool the cut particles, and the particles are very likely to stick together and deform, which will affect the quality and subsequent performance of the particles.

[0006] Therefore, the utility model proposes a twin-screw extruder granulator for producing polyphenylene sulfide composite materials, which is used to solve the above problems. Utility Model Content

[0007] The utility model aims to provide a twin-screw extruder granulator for producing polyphenylene sulfide composite materials, which is used to solve the problems in the prior art that the temperature of the cut particles is high, the particles are prone to adhesion and deformation, and thus affect the quality and later use performance of the particles.

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

[0009] A twin-screw extruder granulator for producing polyphenylene sulfide composite materials comprises a twin-screw extruder, wherein the twin-screw extruder is connected with a feed port, a feeding device is arranged at the upper end of the feed port, a water cooling box is arranged at one end of the extrusion port of the twin-screw extruder, a granulator is arranged at one end of the water cooling box, the extrusion port corresponds to the feed port of the granulator, and the water cooling box has openings corresponding to the extrusion port and the feed port; a cooling box is arranged at the lower end of the granulator, a downpipe is connected to the bottom of the cooling box, a filter screen is arranged at the connection between the downpipe and the cooling box, and a sealing cover is connected to the end of the downpipe.

[0010] By adopting the above technical solution, the required cooling effect can be achieved on the material quickly, the production cycle is shortened, and the production efficiency is improved.

[0011] Furthermore, the upper end of the side wall of the water cooling box is connected to a water outlet, and the lower end of the side wall of the water cooling box is connected to a water inlet.

[0012] By adopting the above technical solution, cooling water can be introduced through the water inlet, and the cooling water circulates inside the water cooling box to quickly cool the material extruded from the extrusion port, thereby effectively reducing the temperature of the material and allowing it to quickly reach the required hardness and strength.

[0013] Furthermore, a lower pressure roller is rotatably connected inside the water cooling box.

[0014] By adopting the above technical solution, it is possible to help maintain the shape of the material and prevent it from being deformed or adhered due to high temperature, so that the material can maintain a stable shape during the cooling process.

[0015] Furthermore, a material distribution roller is connected to the feed inlet of the granulator.

[0016] By adopting the above technical solution, the adhesion of the extruded materials can be avoided and the distance between the materials can be maintained.

[0017] Furthermore, the feeding device includes a support frame, a heating box is connected to the support frame, a feeding pipe is connected to the heating box, a first driving cylinder drives a push plate to slide in the feeding pipe, the first driving cylinder is fixedly connected to the support frame, and the upper end of the heating box is connected to a feed box through a conveying device.

[0018] By adopting the above technical solution, the raw materials can be pre-melted, thereby ensuring that the raw materials reach a certain temperature and fluidity before entering the extruder, so that the various components in the raw materials can be better mixed and dispersed, which helps to achieve more uniform material distribution and more precise composition control, and improve the stability and continuity of the extrusion process.

[0019] Furthermore, the feeding device includes a connecting plate, which is connected between the feeding box and the heating box. The interior of the connecting plate is hollow and has openings corresponding to the feeding box and the heating box. The second driving cylinder drives the transport plate to slide in the connecting plate. The second driving cylinder is fixedly connected to the support frame, and a connecting groove is provided on the transport plate.

[0020] By adopting the above technical solution, continuous, uniform and efficient transportation of materials can be achieved, and the heating box can be closed at the same time.

[0021] Furthermore, the bottom of the feed box is configured in a conical shape.

[0022] By adopting the above technical solution, the materials in the feed box are easily concentrated and discharged smoothly, and the accumulation and retention of materials at the bottom of the box are prevented.

[0023] In summary, compared with the prior art, the utility model has the following beneficial effects:

[0024] 1. The water cooling box of the utility model introduces cooling water through the water inlet, and the cooling water circulates inside the water cooling box to quickly cool the material extruded from the extrusion port, thereby effectively reducing the temperature of the material and making it quickly reach the required hardness and strength. The lower pressure roller in the water cooling box can help maintain the shape of the material when the material passes through, prevent it from deforming or sticking due to high temperature, so that the material can maintain a stable shape during the cooling process, and then the material can quickly achieve the required cooling effect, shortening the production cycle, thereby improving production efficiency.

[0025] 2. The pellets cut out by the granulator of the utility model fall into the cooling box, which ensures the cooling effect, helps to stabilize the state of the pellets and prevents the pellets from sticking or deforming. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 This is a vertical schematic diagram of the utility model Figure 2 ;

[0028] Figure 3 It is the front view of the utility model;

[0029] In the figure: 1. twin-screw extruder; 2. feed port; 3. water cooling box; 4. water outlet; 5. water inlet; 6. lower pressure roller; 7. extrusion port; 8. granulator; 9. dividing roller; 10. feed port; 11. opening; 12. cooling box; 13. downpipe; 14. filter; 15. sealing cover; 16. support frame; 17. heating box; 18. feed pipe; 19. push plate; 20. first drive cylinder; 21. feed box; 22. connecting plate; 23. second drive cylinder; 24. transport plate. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] like Figure 1 and Figure 2 As shown, a twin-screw extruder for producing polyphenylene sulfide composite material comprises a twin-screw extruder 1, a feeding port 2 is connected to the twin-screw extruder 1, a feeding device is arranged at the upper end of the feeding port 2, the feeding device comprises a support frame 16, a heating box 17 is connected to the support frame 16, a feeding pipe 18 is connected to the heating box 17, a first driving cylinder 20 drives a push plate 19 to slide in the feeding pipe 18, the first driving cylinder 20 is fixedly connected to the support frame 16, and a feed box 21 is connected to the upper end of the heating box 17 through a feeding device. The raw material can be pre-melted, thereby ensuring that the raw material reaches a certain temperature and fluidity before entering the extruder, so that the various components in the raw material are better mixed and dispersed, which helps to achieve more uniform material distribution and more accurate component control, and improve the stability and continuity of the extrusion process. The feeding device includes a connecting plate 22, which is connected between the feeding box 21 and the heating box 17. The inside of the connecting plate 22 is hollow, and the connecting plate 22 is provided with openings 11 corresponding to the feeding box 21 and the heating box 17. The second driving cylinder 23 drives the transport plate 24 to slide in the connecting plate 22. The second driving cylinder 23 is fixedly connected to the support frame 16, and a connecting groove is provided on the transport plate 24. The second driving cylinder 23 drives the transport plate 24 to slide in the connecting plate 22, and the transport plate 24 connects the feeding box 21 and the heating box 17. The raw materials fall into the heating box 17, and then the heating box 17 heats the raw materials, realizing continuous, uniform and efficient transportation of the materials, and at the same time, the heating box 17 can be closed. The bottom of the feeding box 21 is conical. It is convenient for the materials in the feeding box 21 to be concentrated and discharged smoothly, and the materials are prevented from accumulating and staying at the bottom of the box.

[0033] like Figure 2As shown, a water cooling box 3 is provided at one end of the extrusion port 7 of the twin-screw extruder 1, and a water outlet 4 is connected to the upper end of the side wall of the water cooling box 3, and a water inlet 5 is connected to the lower end of the side wall of the water cooling box 3. A lower pressure roller 6 is rotatably connected inside the water cooling box 3. Cooling water is introduced into the water cooling box 3 through the water inlet 5, and the cooling water circulates inside the water cooling box 3 to quickly cool the material extruded from the extrusion port 7, thereby effectively reducing the temperature of the material so that it quickly reaches the required hardness and strength. The lower pressure roller 6 in the water cooling box 3 can help maintain the shape of the material when the material passes through, prevent it from being deformed or adhered due to high temperature, so that the material can maintain a stable shape during the cooling process, and then the material can quickly achieve the required cooling effect, shortening the production cycle, thereby improving production efficiency.

[0034] like Figure 2 and Figure 3 As shown, a granulator 8 is provided at one end of the water cooling box 3, and the extrusion port 7 corresponds to the feed port 10 of the granulator 8, and a dividing roller 9 is connected to the feed port 10 of the granulator 8. Then the dividing roller 9 can avoid the adhesion of the extruded materials and maintain the distance between the materials. The water cooling box 3 is provided with openings 11 corresponding to the extrusion port 7 and the feed port 10; so that the materials can smoothly enter the water cooling box 3 for cooling during the extrusion process. A cooling box 12 is provided at the lower end of the granulator 8, and a downpipe 13 is connected to the bottom of the cooling box 12. A filter screen 14 is provided at the connection between the downpipe 13 and the cooling box 12, and a sealing cover 15 is connected to the end of the downpipe 13. Then the particles cut by the granulator 8 fall into the cooling box 12, which ensures the cooling effect, helps to stabilize the state of the particles, and prevents the particles from adhesion or deformation. After the cooling of the particles is completed, the cooling water in the cooling box 12 can be filtered out through the sealing cover 15, and the filter screen 14 can intercept the particles.

[0035] The working process of the utility model is:

[0036] First, the raw materials are mixed evenly according to the proportion, the second driving cylinder 23 drives the transport plate 24 to slide in the connecting plate 22, the transport plate 24 connects the feed box 21 and the heating box 17, the raw materials fall into the heating box 17, and then the heating box 17 heats the raw materials, and then the first driving cylinder 20 drives the push plate 19 to slide in the feeding pipe 18, pushes the raw materials into the feeding port 2, and then starts the twin-screw extruder 1. During the feeding process, the operator needs to adjust the heating temperature of the twin-screw extruder 1 according to the properties of the raw materials and production requirements, and control the temperature of the heating system to ensure that the raw materials can be fully melted and mixed during the extrusion process of the screw. The melted material is extruded under the push of the screw, and then the material is extruded from the extrusion port 7, and then the material enters the water cooling box 3 to quickly reach the required hardness and strength. Then the granulator 8 cuts the material into particles of a certain length, and the cut particles fall into the cooling box 12 for rapid cooling to prevent adhesion and deformation.

Claims

1. A twin-screw extruder granulator for producing polyphenylene sulfide composite materials, comprising a twin-screw extruder (1), characterized in that: The twin-screw extruder (1) is connected to a feeding port (2), and a feeding device is arranged at the upper end of the feeding port (2); a water cooling box (3) is arranged at one end of the extrusion port (7) of the twin-screw extruder (1), and a granulator (8) is arranged at one end of the water cooling box (3); the extrusion port (7) corresponds to the feeding port (10) of the granulator (8), and the water cooling box (3) is provided with openings (11) corresponding to the extrusion port (7) and the feeding port (10); a cooling box (12) is arranged at the lower end of the granulator (8), and a water pipe (13) is connected to the bottom of the cooling box (12), and a filter screen (14) is arranged at the connection point between the water pipe (13) and the cooling box (12), and a sealing cover (15) is connected to the end of the water pipe (13).

2. The twin-screw extruder granulator for producing polyphenylene sulfide composite materials according to claim 1, characterized in that: The upper end of the side wall of the water cooling box (3) is connected to a water outlet (4), and the lower end of the side wall of the water cooling box (3) is connected to a water inlet (5).

3. The twin-screw extruder granulator for producing polyphenylene sulfide composite materials according to claim 2, characterized in that: A lower pressure roller (6) is rotatably connected inside the water cooling box (3).

4. The twin-screw extruder granulator for producing polyphenylene sulfide composite materials according to claim 1, characterized in that: A material distribution roller (9) is connected to the feed inlet (10) of the granulator (8).

5. The twin-screw extruder granulator for producing polyphenylene sulfide composite materials according to claim 1, characterized in that: The feeding device comprises a support frame (16), a heating box (17) is connected to the support frame (16), a feeding pipe (18) is connected to the heating box (17), a first driving cylinder (20) drives a push plate (19) to slide in the feeding pipe (18), the first driving cylinder (20) is fixedly connected to the support frame (16), and the upper end of the heating box (17) is connected to a feeding box (21) through a feeding device.

6. The twin-screw extruder granulator for producing polyphenylene sulfide composite materials according to claim 5, characterized in that: The feeding device comprises a connecting plate (22), wherein the connecting plate (22) is connected between the feeding box (21) and the heating box (17), the interior of the connecting plate (22) is hollow, and the connecting plate (22) is provided with openings (11) corresponding to the feeding box (21) and the heating box (17), and a second driving cylinder (23) drives a transport plate (24) to slide in the connecting plate (22), the second driving cylinder (23) is fixedly connected to the support frame (16), and a connecting groove is provided on the transport plate (24).

7. The twin-screw extruder granulator for producing polyphenylene sulfide composite materials according to claim 6, characterized in that: The bottom of the feed box (21) is arranged in a conical shape.

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