Hard PVC raw material production extrusion device

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) production, and discloses a hard PVC raw material production extrusion device which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a motor seat, the upper end of the motor seat is fixedly connected with a motor, the output end of the motor is fixedly connected with a transmission shaft, the right end of the transmission shaft is fixedly connected with a conveying screw rod, and the right end of the transmission shaft is fixedly connected with a screw rod. A machine barrel is arranged at the upper end of the bottom plate, a supporting frame is fixedly connected to the bottom of the machine barrel, a fixing frame is fixedly connected to the upper surface of the bottom plate, the upper end of the machine barrel communicates with a square pipe, the top of the square pipe is fixedly connected with a feeding hopper, and a sliding groove is formed in the inner wall of the square pipe. The cylinder pushes the fixed block to move, so that the heat insulation baffle slides on the inner wall of the sliding groove, the position of the feeding hopper is shielded, the heat insulation baffle has a heat insulation effect, heat in the machine barrel is effectively isolated from being dissipated, raw materials are prevented from being melted too early, heat is prevented from being lost, and extrusion efficiency and a comfortable working environment are kept.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC production, in particular to an extrusion device for producing rigid PVC raw materials. Background Art

[0002] Rigid polyvinyl chloride (PVC) is a thermoplastic plastic material widely used in industries such as construction, automotive, and packaging. The production of rigid PVC mainly includes steps such as raw material treatment, polymerization reaction, plasticization, extrusion molding, and cooling and solidification. The main raw materials for producing rigid PVC are ethylene and chlorine, which generate PVC resin through a polymerization reaction. During the production process, auxiliary materials such as stabilizers, plasticizers, fillers, and masterbatches also need to be added to improve the performance and processing characteristics of the final product.

[0003] The PVC production extrusion device with the publication number of CN217293427U discloses a PVC production extrusion device. Through the provided extrusion mechanism, feeding mechanism, and shifting mechanism: on the one hand, the provided screw and the first motor are convenient for extruding PVC; on the other hand, the second motor drives the screw rod to rotate. As the screw rod rotates, the hopper and the discharge pipe can be driven to move in the moving groove. When feeding is required, the hopper and the discharge pipe move and communicate with the feed inlet. When feeding is not required, the hopper and the discharge pipe move and disengage from the feed inlet. This design can avoid the situation that the raw materials are melted by heat and the feed inlet is blocked due to the long-term contact between the discharge pipe and the feed inlet.

[0004] For this PVC production extrusion device, through the movement of the hopper and the discharge pipe, it is possible to avoid the situation that the raw materials are melted by heat and the feed inlet is blocked due to the long-term contact between the discharge pipe and the feed inlet. However, when the hopper and the discharge pipe are moved away from the feed inlet, the feed inlet will leak, and the heat inside the barrel will be dissipated through the feed inlet. This will cause the heating temperature of the PVC material inside the barrel to be unstable, affect the melting state and fluidity of the material, thereby reducing the extrusion efficiency. The dissipated high-temperature heat will cause the temperature of the working area to rise and affect the comfort of the operators. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides an extrusion device for producing rigid PVC raw materials.

[0006] The present utility model is implemented by the following technical solutions: A hard PVC raw material production and extrusion device, including a bottom plate, on the upper surface of the bottom plate is fixedly connected with a motor base, at the upper end of the motor base is fixedly connected with a motor, the output end of the motor is fixedly connected with a transmission shaft, at the right end of the transmission shaft is fixedly connected with a conveying screw, at the upper end of the bottom plate is provided with a barrel, at the bottom of the barrel is fixedly connected with a support frame, on the upper surface of the bottom plate is fixedly connected with a fixing frame, at the upper end of the barrel is communicated with a square pipe, at the top of the square pipe is fixedly connected with a feeding hopper, on the inner wall of the square pipe is provided with a chute, on the inner wall of the chute is slidably connected with a heat insulation baffle, at the right end of the heat insulation baffle is fixedly connected with a fixing block, at the right end of the fixing block is fixedly connected with a cylinder.

[0007] Through the above technical solutions, the cylinder is pushed to move the fixing block, so that the heat insulation baffle slides on the inner wall of the chute, thereby blocking the position of the feeding hopper. The heat insulation baffle has the effect of heat insulation, effectively isolating the heat dissipation inside the barrel to prevent the raw materials from melting prematurely and heat loss, and at the same time ensuring the subsequent extrusion efficiency. The position of the heat insulation baffle is limited by the chute, ensuring the stability of the heat insulation baffle during movement.

[0008] As a further improvement of the above solution, the number of the support frames is three, and the three support frames are symmetrically distributed with the barrel as the center.

[0009] Through the above technical solutions, the barrel is supported by the support frames, improving the stability of the barrel during operation.

[0010] As a further improvement of the above solution, the right end of the conveying screw extends into the barrel, and the surface of the conveying screw is rotationally connected with the inner wall of the fixing frame.

[0011] Through the above technical solutions, the raw materials are conveyed by the rotation of the conveying screw.

[0012] As a further improvement of the above solution, the right end of the cylinder is fixedly connected with a mounting plate, and the lower end of the mounting plate is fixedly connected with the surface of the barrel.

[0013] As a further improvement of the above solution, a limiting groove is opened at the right end of the barrel, and a filter screen is arranged inside the limiting groove.

[0014] Through the above technical solutions, the impurities in the raw materials are filtered by the filter screen, making the extruded raw materials pure and improving the quality and effect of production.

[0015] As a further improvement of the above solution, a connection cover is sleeved at the right end of the barrel, the right end of the filter screen is in contact with the left end of the connection cover, and a discharge port is opened on the inner wall of the connection cover.

[0016] Through the above technical solution, the filter screen is squeezed and limited by the left end of the connecting cover, thereby fixing the filter screen.

[0017] As a further improvement of the above solution, a fastening bolt is threadedly connected to the inner wall of the connecting cover, and the fastening bolt penetrates through the connecting cover and is threadedly connected to the inner wall of the barrel.

[0018] Through the above technical solution, the connecting cover is installed by the fastening bolt, which is convenient for subsequent disassembly, and it is also convenient to take out the filter screen for cleaning or replacement later, improving the convenience during use.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] The present utility model is provided with a square tube, a heat insulation baffle, a fixing block and a cylinder. Specifically, the cylinder is used to push the fixing block to move, so that the heat insulation baffle slides on the inner wall of the chute, thereby blocking the position of the feeding hopper. The heat insulation baffle has a heat insulation effect, effectively isolating the heat dissipation inside the barrel to prevent the raw materials from melting prematurely and heat loss, thus maintaining the extrusion efficiency and a comfortable working environment.

[0021] The present utility model is provided with a filter screen, a connecting cover and a threaded rod. Specifically, the filter screen filters impurities in the raw materials to ensure the purity and quality of the extruded products. When the filter screen needs to be disassembled later, the fastening bolt is disassembled, the connecting cover is removed, and the limit on the filter screen is cancelled, then the filter screen can be taken out for cleaning, which is convenient for subsequent cleaning of the filter screen and improves the convenience of operation. Brief Description of the Drawings

[0022] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 is a schematic diagram of the overall sectional structure of the present utility model;

[0024] Figure 3 is a schematic diagram of the square tube connection structure of the present utility model;

[0025] Figure 4 is a schematic diagram of the internal structure of the barrel of the present utility model;

[0026] Figure 5 is a schematic diagram of the exploded structure of the connecting cover of the present utility model.

[0027] Main Symbol Explanation:

[0028] 1. Base plate; 2. Motor base; 3. Motor; 4. Transmission shaft; 5. Feeding screw; 6. Barrel; 7. Support frame; 8. Fixed frame; 9. Square tube; 10. Hopper; 11. Slide groove; 12. Heat insulation baffle; 13. Fixed block; 14. Cylinder; 15. Mounting plate; 16. Limit groove; 17. Filter screen; 18. Connecting cover; 19. Discharge port; 20. Tightening bolt. Detailed implementation mode

[0029] Next, in combination with the accompanying drawings and specific implementation modes, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0030] Embodiment:

[0031] Please refer to Figures 1-5 , A hard PVC raw material production and extrusion device in this embodiment includes a base plate 1. The upper surface of the base plate 1 is fixedly connected with a motor base 2. The upper end of the motor base 2 is fixedly connected with a motor 3. The output end of the motor 3 is fixedly connected with a transmission shaft 4. The right end of the transmission shaft 4 is fixedly connected with a feeding screw 5. The upper end of the base plate 1 is provided with a barrel 6. The bottom of the barrel 6 is fixedly connected with a support frame 7. The upper surface of the base plate 1 is fixedly connected with a fixed frame 8. The upper end of the barrel 6 is communicated with a square tube 9. The top of the square tube 9 is fixedly connected with a hopper 10. The inner wall of the square tube 9 is provided with a slide groove 11. The inner wall of the slide groove 11 is slidably connected with a heat insulation baffle 12. The right end of the heat insulation baffle 12 is fixedly connected with a fixed block 13. The right end of the fixed block 13 is fixedly connected with a cylinder 14. The raw material enters the inside of the barrel 6 through the square tube 9. Then start the motor 3. The motor 3 drives the transmission shaft 4 to rotate, so that the feeding screw 5 rotates. The raw material is pushed towards the discharge port 19 by the feeding screw 5. At the same time, the raw material gradually melts. When the feeding stops, the cylinder 14 is used to push the fixed block 13 to move, so that the heat insulation baffle 12 slides on the inner wall of the slide groove 11, thereby blocking the position of the hopper 10. The heat insulation baffle 12 has the effect of heat insulation, effectively isolating the heat dissipation inside the barrel 6 to prevent the raw material from melting prematurely and heat loss, thereby maintaining the extrusion efficiency and a comfortable working environment.

[0032] The number of the support frames 7 is set to three, and the three support frames 7 are symmetrically distributed with the barrel 6 as the center.

[0033] The right end of the feeding screw 5 extends into the inside of the barrel 6, and the surface of the feeding screw 5 is rotatably connected with the inner wall of the fixed frame 8.

[0034] The right end of the cylinder 14 is fixedly connected with a mounting plate 15, and the lower end of the mounting plate 15 is fixedly connected with the surface of the barrel 6.

[0035] A limiting groove 16 is provided at the right end of the barrel 6, and a filter screen 17 is arranged inside the limiting groove 16. The impurities in the raw materials are filtered through the filter screen 17 to ensure the purity and quality of the extruded products.

[0036] A connection cover 18 is sleeved on the right end of the barrel 6. The right end of the filter screen 17 contacts the left end of the connection cover 18. A discharge port 19 is provided on the inner wall of the connection cover 18. When the filter screen 17 needs to be disassembled subsequently, the connection cover 18 is removed by disassembling the fastening bolts 20 to cancel the limitation on the filter screen 17, and then the filter screen 17 can be taken out for cleaning, which is convenient for subsequent cleaning of the filter screen 17 and improves the operation convenience.

[0037] The inner wall of the connection cover 18 is threadedly connected with fastening bolts 20. The fastening bolts 20 penetrate through the connection cover 18 and are threadedly connected with the inner wall of the barrel 6.

[0038] The implementation principle of an extrusion device for producing rigid PVC raw materials in the embodiment of the present application is as follows: When in use, the raw materials are poured into the inside of the feeding hopper 10. The raw materials enter the inside of the barrel 6 through the square pipe 9. Then, the motor 3 is started, and the motor 3 drives the transmission shaft 4 to rotate, so that the conveying screw 5 rotates. The raw materials are pushed towards the discharge port 19 through the conveying screw 5. At the same time, the raw materials are gradually melted. The impurities in the raw materials are filtered through the filter screen 17 to ensure the purity and quality of the extruded products. When the feeding stops, the fixed block 13 is pushed to move by the air cylinder 14, so that the heat insulation baffle 12 slides on the inner wall of the sliding groove 11, thereby blocking the position of the feeding hopper 10. The heat insulation baffle 12 has a heat insulation effect, effectively isolating the heat dissipation inside the barrel 6 to prevent the raw materials from melting prematurely and heat loss, so as to maintain the extrusion efficiency and a comfortable working environment. When the filter screen 17 needs to be disassembled subsequently, the connection cover 18 is removed by disassembling the fastening bolts 20 to cancel the limitation on the filter screen 17, and then the filter screen 17 can be taken out for cleaning, which is convenient for subsequent cleaning of the filter screen 17 and improves the operation convenience.

[0039] The above implementation manners are only the preferred implementation manners of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present utility model belong to the protection scope required by the present utility model.

Claims

1. A rigid PVC raw material production extrusion device, characterized in that: The invention comprises a bottom plate (1), the upper surface of the bottom plate (1) is fixedly connected with a motor seat (2), the upper end of the motor seat (2) is fixedly connected with a motor (3), the output end of the motor (3) is fixedly connected with a transmission shaft (4), the right end of the transmission shaft (4) is fixedly connected with a conveying screw (5), the upper end of the bottom plate (1) is provided with a barrel (6), the bottom of the barrel (6) is fixedly connected with a support frame (7), the upper surface of the bottom plate (1) is fixedly connected with a fixing frame (8), the upper end of the barrel (6) is connected with a square tube (9), the top of the square tube (9) is fixedly connected with a feeding hopper (10), the inner wall of the square tube (9) is provided with a slide groove (11), the inner wall of the slide groove (11) is slidably connected with a heat insulation baffle (12), the right end of the heat insulation baffle (12) is fixedly connected with a fixing block (13), and the right end of the fixing block (13) is fixedly connected with a cylinder (14).

2. A rigid PVC raw material production extrusion device as claimed in claim 1, characterized in that: The number of the support frames (7) is three, and the three support frames (7) are symmetrically distributed with the barrel (6) as the center.

3. A rigid PVC raw material production extrusion device as claimed in claim 1, characterized in that: The right end of the conveying screw (5) extends to the interior of the barrel (6), and the surface of the conveying screw (5) is rotatably connected to the inner wall of the fixing frame (8).

4. A rigid PVC raw material production extrusion device as claimed in claim 1, characterized in that: The right end of the cylinder (14) is fixedly connected to a mounting plate (15), and the lower end of the mounting plate (15) is fixedly connected to the surface of the barrel (6).

5. A rigid PVC raw material production extrusion device as claimed in claim 4, characterized in that: A limiting groove (16) is provided at the right end of the barrel (6), and a filter screen (17) is arranged inside the limiting groove (16).

6. A rigid PVC raw material production extrusion device as claimed in claim 5, characterized in that: The right end of the barrel (6) is sleeved with a connecting cover (18), the right end of the filter screen (17) is in contact with the left end of the connecting cover (18), and the inner wall of the connecting cover (18) is provided with a discharge port (19).

7. A rigid PVC raw material production extrusion device as claimed in claim 6, characterized in that: The inner wall of the connection cover (18) is threadedly connected with a fastening bolt (20), and the fastening bolt (20) passes through the connection cover (18) and is threadedly connected to the inner wall of the barrel (6).

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