Cooling device of double-screw extruder

Abstract

The utility model relates to the technical field of double-screw extruders, in particular to a cooling device of a double-screw extruder, which comprises a bottom plate and a cooling pond arranged at the top of the bottom plate and used for cooling and forming products, a connecting pipe is arranged on one side of the cooling pond, a first water pump is arranged at one end of the connecting pipe, and a second water pump is arranged at the other end of the connecting pipe. One end of the first water pump communicates with a filter box through a pipeline, and the inner wall of the filter box is fixedly connected with a mounting frame; impurity particles in cooling water can be filtered through the filter plate, impurities are prevented from being attached to a product, the filter plate is sprayed and cleaned through the water outlet cover and the spray head, the subsequent cooling water filtering effect is improved, heat generated by the cooling pipe and the cooling water is absorbed through the cooling fins, and the cooling effect is improved. And cooling air is blown to the cooling pipe through the flow guide cover to cool the cooling pipe, so that the cooling effect of the cooling water is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw extruders, in particular to a cooling device for a twin-screw extruder. Background Art

[0002] Twin-screw extruder is a widely used equipment in the field of plastic processing. It uses twin screws as the main transmission parts to plasticize, mix and extrude high-strength and high-toughness polymer materials. Twin-screw extruder has the characteristics of compact structure, stable performance and strong adaptability. It is widely used in the production of plastic films, plates, profiles and other products.

[0003] After the twin-screw extruder extrude the plastic, the plastic product needs to be quickly cooled and formed, so a cooling device is needed. During use, the existing cooling device directly puts the plastic product into the cooling pool for cooling. However, after the cooling pool is used for a long time, a large amount of foreign particles will remain in the cooling water. When cooling subsequent products, the foreign particles will adhere to the surface of the plastic product, affecting the molding effect of the plastic product. In addition, the cooling water will gradually increase in water temperature due to continuous use. The high temperature will affect the cooling effect of the plastic product and affect production efficiency.

[0004] Therefore, it is necessary to provide a new cooling device for twin-screw extruder to solve the above-mentioned technical problems. Utility Model Content

[0005] The utility model aims to provide a cooling device for a twin-screw extruder to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a cooling device for a twin-screw extruder, comprising a bottom plate, and further comprising:

[0007] A cooling pool is arranged on the top of the bottom plate for cooling and molding the product, a connecting pipe is arranged on one side of the cooling pool, a first water pump is arranged at one end of the connecting pipe, one end of the first water pump is connected to a filter box through a pipeline, a mounting frame is fixedly connected to the inner wall of the filter box, and a filter plate for filtering impurities in the cooling water is slidably connected to the inner wall of the mounting frame;

[0008] A second water pump is arranged on one side of the filter box, and a cooling pipe is arranged at one end of the second water pump, and one end of the cooling pipe is connected to one side of the cooling pool. Heat dissipation fins for absorbing heat of cooling water are arranged on the top of the base plate, and a cooling box for dissipating heat from the heat dissipation fins is arranged on the top of the base plate, and a guide frame for guiding cooling air generated by the cooling box is arranged on the outer side of the heat dissipation fins.

[0009] Preferably, a motor is fixedly connected to the top of the filter box, a rotating rod is fixedly connected to the output end of the motor, and a scraper for scraping off foreign particles on the surface of the filter plate is fixedly connected to the outer side of the rotating rod.

[0010] Preferably, a cleaning box is fixedly connected to the outer side of the rotating rod, and a water inlet is provided on the top of the cleaning box.

[0011] Preferably, the outside of the cleaning box is connected to two groups of third water pumps through a pipeline, one end of the third water pump is connected to a water outlet hood through a pipeline, and a plurality of groups of nozzles are arranged at the bottom of the water outlet hood.

[0012] Preferably, a refrigerator and a cooling fan are respectively provided inside the cooling box, and a guide cover is provided on the top of the guide frame.

[0013] Preferably, a pull plate is fixedly connected to one side of the filter plate, and a drain pipe is provided on one side of the filter box.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model can filter the impurity particles in the cooling water through the filter plate to avoid the problem of impurities adhering to the product, spray and clean the filter plate through the water outlet cover and the nozzle, improve the filtering effect of the subsequent cooling water, absorb the heat generated by the cooling pipe and the cooling water through the heat dissipation fins, cool the cooling water, and the cooling wind is blown to the cooling pipe through the guide cover to cool the cooling pipe, thereby improving the cooling effect of the cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a preferred embodiment of a cooling device for a twin-screw extruder provided by the utility model;

[0017] Figure 2 It is a structural schematic diagram of the filter plate in the utility model;

[0018] Figure 3 This is a schematic diagram of the structure inside the filter box of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the cooling box and the guide frame in the utility model.

[0020] In the figure: 1. bottom plate; 2. cooling pool; 3. connecting pipe; 4. first water pump; 5. filter box; 6. mounting frame; 7. filter plate; 8. second water pump; 9. cooling pipe; 10. cooling fin; 11. motor; 12. rotating rod; 13. scraper; 14. cleaning box; 15. water inlet; 16. third water pump; 17. water outlet cover; 18. nozzle; 19. cooling box; 20. guide frame; 21. refrigerator; 22. cooling fan; 23. guide cover; 24. pull plate; 25. drain pipe. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] See also Figure 1-4 As shown, a cooling device for a twin-screw extruder comprises a bottom plate 1, a cooling pool 2 is arranged on the top of the bottom plate 1, and the cooling pool 2 can be used to cool and shape the molded product, a connecting pipe 3 is arranged on one side of the cooling pool 2, a first water pump 4 is arranged on one end of the connecting pipe 3, and a filter box 5 is connected to one end of the first water pump 4 through a pipeline, and the first water pump 4 pumps the cooling water inside the cooling pool 2 into the filter box 5 through the connecting pipe 3, and a mounting frame 6 is fixedly connected to the inner wall of the filter box 5, and a filter plate 7 for filtering impurities in the cooling water is slidably connected to the inner wall of the mounting frame 6, and the impurity particles in the cooling water can be filtered through the filter plate 7 to avoid the problem of impurities adhering to the product. A second water pump 8 is placed on one side of the filter box 5, and a water inlet end of the second water pump 8 is connected to one side of the filter box 5 through a pipeline. A cooling pipe 9 is provided at one end of the second water pump 8, and the filtered cooling water is pumped into the cooling pipe 9 through the second water pump 8. One end of the cooling pipe 9 is connected to one side of the cooling pool 2. A heat sink 10 for absorbing the heat of the cooling water is provided on the top of the base plate 1. The heat generated by the cooling pipe 9 and the cooling water is absorbed by the heat sink 10 to cool the cooling water. A cooling box 19 for dissipating the heat of the heat sink 10 is provided on the top of the base plate 1, and a guide frame 20 for guiding the cooling wind generated by the cooling box 19 is provided on the outside of the heat sink 10.

[0023] refer to Figure 2 and Figure 3As shown, the top of the filter box 5 is fixedly connected to a motor 11, the output end of the motor 11 is fixedly connected to a rotating rod 12, and the outer side of the rotating rod 12 is fixedly connected to a scraper 13 for scraping off impurity particles on the surface of the filter plate 7. The motor 11 is started to drive the rotating rod 12 to rotate, so that the scraper 13 scrapes off the impurity particles on the filter plate 7 to avoid the problem of clogging of the filter plate 7. The outer side of the rotating rod 12 is fixedly connected to a cleaning box 14, and the cleaning box 14 is hollow. A water inlet 15 is provided on the top of the cleaning box 14, and cleaning water is poured into the cleaning box 14 through the water inlet 15. The outside of the washing box 14 is connected to two groups of third water pumps 16 through pipes, and one end of the third water pump 16 is connected to a water outlet hood 17 through a pipe. A plurality of nozzles 18 are arranged at the bottom of the water outlet hood 17. The cleaning water inside the washing box 14 is pumped out by the third water pump 16, and the filter plate 7 is sprayed and cleaned by the water outlet hood 17 and the nozzles 18 to improve the filtering effect of subsequent cooling water. A pull plate 24 is fixedly connected to one side of the filter plate 7, and the filter plate 7 can be disassembled by pulling the pull plate 24. A drain pipe 25 is arranged on one side of the filter box 5, and the drain pipe 25 can discharge the sewage after cleaning.

[0024] refer to Figure 4 As shown, a refrigerator 21 and a cooling fan 22 are respectively provided inside the cooling box 19. The refrigerator 21 is a prior art device that utilizes semiconductor refrigeration and is not described in detail here. A guide cover 23 is provided on the top of the guide frame 20. The refrigerator 21 is started to start cooling, and the cold air generated by the refrigerator 21 is blown into the guide frame 20 through the cooling fan 22. The cooling wind passes through the guide frame 20 and is blown toward the heat dissipating fins 10 to dissipate heat from the heat dissipating fins 10, thereby improving the heat dissipation effect on the cooling pipe 9. The cooling wind passes through the guide cover 23 and is blown toward the cooling pipe 9 to cool the cooling pipe 9, thereby improving the cooling effect of the cooling water.

[0025] Working principle: When the device is in use, the first water pump 4 pumps the cooling water in the cooling pool 2 into the filter box 5 through the connecting pipe 3, and the impurity particles in the cooling water can be filtered through the filter plate 7 to avoid the problem of impurities adhering to the product. The motor 11 is started to drive the rotating rod 12 to rotate, so that the scraper 13 scrapes the impurity particles on the filter plate 7 to avoid the problem of clogging of the filter plate 7. The cleaning water in the cleaning box 14 is pumped out by the third water pump 16, and the filter plate 7 is sprayed and cleaned through the water outlet cover 17 and the nozzle 18 to improve the filtering effect of the subsequent cooling water. The drain pipe 25 can discharge the sewage after cleaning, and the second water pump 16 can be used to remove the impurity particles on the filter plate 7. The pump 8 draws the filtered cooling water into the cooling pipe 9, absorbs the heat generated by the cooling pipe 9 and the cooling water through the heat dissipation fins 10, cools the cooling water, starts the refrigerator 21 to start cooling, and blows the cold air generated by the refrigerator 21 into the guide frame 20 through the cooling fan 22. The cooling wind passes through the guide frame 20 and blows to the heat dissipation fins 10 to dissipate heat on the heat dissipation fins 10, thereby improving the heat dissipation effect on the cooling pipe 9. The cooling wind blows to the cooling pipe 9 through the guide cover 23 to cool the cooling pipe 9 and improve the cooling effect of the cooling water. After the cooling water is cooled, it enters the cooling pool 2 for continued use, thereby improving the cooling and molding effect of the product.

[0026] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A cooling device for a twin-screw extruder, comprising a bottom plate (1), characterized in that: Also includes: A cooling pool (2) is arranged on the top of the bottom plate (1) for cooling and molding the product, a connecting pipe (3) is arranged on one side of the cooling pool (2), a first water pump (4) is arranged at one end of the connecting pipe (3), one end of the first water pump (4) is connected to a filter box (5) through a pipeline, a mounting frame (6) is fixedly connected to the inner wall of the filter box (5), and a filter plate (7) for filtering impurities in the cooling water is slidably connected to the inner wall of the mounting frame (6); A second water pump (8) is arranged on one side of the filter box (5), one end of the second water pump (8) is provided with a cooling pipe (9), one end of the cooling pipe (9) is connected to one side of the cooling pool (2), the top of the base plate (1) is provided with a heat dissipation fin (10) for absorbing the heat of cooling water, the top of the base plate (1) is provided with a cooling box (19) for dissipating the heat of the heat dissipation fin (10), and the outer side of the heat dissipation fin (10) is provided with a guide frame (20) for guiding the cooling air generated by the cooling box (19).

2. A cooling device for a twin-screw extruder according to claim 1, characterized in that: A motor (11) is fixedly connected to the top of the filter box (5), a rotating rod (12) is fixedly connected to the output end of the motor (11), and a scraper (13) for scraping off foreign particles on the surface of the filter plate (7) is fixedly connected to the outer side of the rotating rod (12).

3. A cooling device for a twin-screw extruder according to claim 2, characterized in that: A cleaning box (14) is fixedly connected to the outer side of the rotating rod (12), and a water inlet (15) is arranged on the top of the cleaning box (14).

4. A cooling device for a twin-screw extruder according to claim 3, characterized in that: The outside of the cleaning box (14) is connected to two groups of third water pumps (16) through a pipeline, one end of the third water pump (16) is connected to a water outlet cover (17) through a pipeline, and a plurality of groups of nozzles (18) are arranged at the bottom of the water outlet cover (17).

5. The cooling device for a twin-screw extruder according to claim 1, characterized in that: A refrigerator (21) and a cooling fan (22) are respectively arranged inside the cooling box (19), and a flow guide cover (23) is arranged on the top of the flow guide frame (20).

6. A cooling device for a twin-screw extruder according to claim 1, characterized in that: A pull plate (24) is fixedly connected to one side of the filter plate (7), and a drainage pipe (25) is provided on one side of the filter box (5).

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