A twin-screw extruder vacuum water circulating device

Abstract

The utility model relates to double screw extruder vacuum water circulation technical field, and disclose a kind of double screw extruder vacuum water circulation device, including double screw extruder body, buffer tank and circulating water tank and vacuum pump, vacuum exhaust pipe orifice is provided on double screw extruder body, this double screw extruder vacuum water circulation device, and water is supplied to vacuum pump by circulating water tank and pump body water supply pipe, then water flows back circulating water tank by backwater pipe, realize water circulation use, moisture in the water that enters buffer tank by vacuum exhaust pipe orifice, also participate in water circulation use, reduce water consumption, save water resources.

Description

Technical Field

[0001] This utility model relates to the field of vacuum water circulation technology for twin-screw extruders, specifically to a vacuum water circulation device for twin-screw extruders. Background Technology

[0002] Twin-screw extruders require a vacuum generator during production to provide a stable and controllable vacuum environment for the exhaust port, effectively extracting volatiles (moisture, monomers, solvents, low molecular weight decomposition products, air, etc.) from the melt material, thereby improving the quality and performance of the final product. Currently, the most commonly used vacuum generator in the production process is a vacuum pump. Water is directly drawn from the tap water pipe through the vacuum pump inlet and then discharged from the vacuum pump outlet, requiring external water resources for the discharge process, resulting in water waste.

[0003] Therefore, we propose a vacuum water circulation device for a twin-screw extruder to solve the problems mentioned above. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the current production process, the commonly used vacuum generating device is a vacuum pump, which draws water directly from the tap water pipe through the vacuum pump inlet and then discharges it through the vacuum pump outlet. This requires the participation of external water resources for the discharge process, resulting in water waste.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a twin-screw extruder vacuum water circulation device, comprising: a twin-screw extruder body, wherein a vacuum exhaust port is provided on the twin-screw extruder body;

[0006] A buffer tank is located on the side of the twin-screw extruder body, and a guide pipe is connected between the buffer tank and the vacuum exhaust port.

[0007] A circulating water tank and a vacuum pump are located on the side of the twin-screw extruder body. A water tank replenishment pipe is provided between the buffer tank and the circulating water tank. A pump body replenishment pipe is provided between the circulating water tank and the vacuum pump. A first control valve is provided on the pump body replenishment pipe. A suction pipe is connected between the input end of the vacuum pump and the buffer tank, and a return water pipe is connected between the output end of the vacuum pump and the circulating water tank.

[0008] Furthermore, the circulating water tank is equipped with a high-level overflow pipe, a middle-level overflow pipe, and a low-level overflow pipe, and a second control valve is installed on the low-level overflow pipe.

[0009] Furthermore, the buffer tank includes a tank body, a tank cover is provided on the tank body, and a filter is provided inside the tank body.

[0010] Furthermore, a residual water drain pipe is provided at the bottom of the tank, and a third control valve is provided on the residual water drain pipe.

[0011] Furthermore, the circulating water tank includes a tank body, a tank cover is provided on the tank body, and an air outlet pipe is provided on the tank cover.

[0012] Furthermore, the high-level overflow pipe, the middle-level overflow pipe, and the low-level overflow pipe are located on the side of the circulating water tank, and the high-level overflow pipe, the middle-level overflow pipe, and the low-level overflow pipe are arranged in order from top to bottom.

[0013] Furthermore, one end of the high-level overflow pipe is connected to the low-level overflow pipe, the middle-level overflow pipe is connected to the high-level overflow pipe, a main drain pipe is provided on the outside of the circulating water tank, and the low-level overflow pipe and the residual water drain pipe are both connected to the main drain pipe.

[0014] The beneficial effects of this utility model are as follows: A buffer tank is provided on the side of the twin-screw extruder body, a guide pipe is connected between the buffer tank and the vacuum exhaust port, a circulating water tank and a vacuum pump are provided on the side of the twin-screw extruder body, a water tank replenishment pipe is provided between the buffer tank and the circulating water tank, a pump body replenishment pipe is provided between the circulating water tank and the vacuum pump, a suction pipe is connected between the input end of the vacuum pump and the buffer tank, and a return water pipe is connected between the output end of the vacuum pump and the circulating water tank. Water is replenished to the vacuum pump through the circulating water tank and the pump body replenishment pipe, and then the water flows back to the circulating water tank through the return water pipe, realizing water recycling. The water entering the buffer tank through the vacuum exhaust port also participates in the water recycling, reducing water consumption and saving water resources. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the vacuum water circulation device for the twin-screw extruder of this utility model;

[0016] Figure 2 This is a schematic diagram of the first part of the structure of the vacuum water circulation device for the twin-screw extruder of this utility model;

[0017] Figure 3 This is a schematic diagram of the first part of the structure of the vacuum water circulation device for the twin-screw extruder of this utility model.

[0018] The names corresponding to each mark in the diagram:

[0019] 1. Twin-screw extruder body; 2. Vacuum exhaust port; 3. Buffer tank; 31. Tank body; 32. Tank cover; 33. Filter; 4. Guide pipe; 5. Circulating water tank; 51. Tank body; 52. Tank cover; 53. Exhaust pipe; 6. Vacuum pump; 7. Water tank replenishment pipe; 8. Pump body replenishment pipe; 9. First control valve; 10. Suction pipe; 11. Return water pipe; 12. High-level overflow pipe; 13. Mid-level overflow pipe; 14. Low-level overflow pipe; 15. Second control valve; 16. Residual water drain pipe; 17. Third control valve; 18. Main drain pipe. Detailed Implementation

[0020] 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 skilled in the art are within the protection scope of the present utility model.

[0021] Embodiments of this utility model:

[0022] like Figures 1-3 As shown, this utility model provides a vacuum water circulation device for a twin-screw extruder, including a twin-screw extruder body 1, a buffer tank 3, a circulating water tank 5, and a vacuum pump 6. The twin-screw extruder body 1 is provided with a vacuum exhaust port 2. The buffer tank 3 is located on the side of the twin-screw extruder body 1, and a guide pipe 4 connects the buffer tank 3 and the vacuum exhaust port 2. The circulating water tank 5 and the vacuum pump 6 are located on the side of the twin-screw extruder body 1. A water tank replenishment pipe 7 is provided between the buffer tank 3 and the circulating water tank 5. A pump body replenishment pipe 8 is provided between the circulating water tank 5 and the vacuum pump 6. A first control valve 9 is provided on the pump body replenishment pipe 8. A suction pipe 10 connects the input end of the vacuum pump 6 to the buffer tank 3. A return water pipe 11 connects the output end of the air pump 6 to the circulating water tank 5. The circulating water tank 5 includes a tank body 51, a tank cover 52, and an air outlet pipe 53. The buffer tank 3 includes a tank body 31, a tank cover 32, and a filter 33 inside the tank body 31. This configuration allows for the filtration of volatiles entering the buffer tank 3. Water is supplied to the vacuum pump 6 via the circulating water tank 5 and the pump body water supply pipe 8. The water then flows back to the circulating water tank 5 through the return water pipe 11, achieving water recycling. Water entering the buffer tank 3 through the vacuum exhaust pipe 2 is filtered and then introduced into the circulating water tank 5 through the water tank water supply pipe 7 to participate in water recycling.

[0023] like Figures 1-3As shown, the circulating water tank 5 is equipped with a high-level overflow pipe 12, a medium-level overflow pipe 13, and a low-level overflow pipe 14. A second control valve 15 is installed on the low-level overflow pipe 14. The high-level overflow pipe 12, the medium-level overflow pipe 13, and the low-level overflow pipe 14 are located on the side of the circulating water tank 5 and are arranged from top to bottom. With this arrangement, when the water level in the circulating water tank 5 rises, the medium-level overflow pipe 13 and the high-level overflow pipe 12 ensure that the water will not overflow. The low-level overflow pipe 14 can be opened by rotating the second control valve 15 to discharge the water.

[0024] like Figures 1-3 As shown, a residual water drain pipe 16 is provided at the bottom of the tank 31, and a third control valve 17 is provided on the residual water drain pipe 16. One end of the high-level overflow pipe 12 is connected to the low-level overflow pipe 14, and the middle-level overflow pipe 13 is connected to the high-level overflow pipe 12. A main drain pipe 18 is provided on the outside of the circulating water tank 5. Both the low-level overflow pipe 14 and the residual water drain pipe 16 are connected to the main drain pipe 18. With this arrangement, water can be drained through the main drain pipe 18.

Claims

1. A vacuum water circulation device for a twin-screw extruder, characterized in that, include: The twin-screw extruder body (1) is provided with a vacuum exhaust port (2); A buffer tank (3) is provided on the side of the twin-screw extruder body (1), and a guide pipe (4) is connected between the buffer tank (3) and the vacuum exhaust port (2); A circulating water tank (5) and a vacuum pump (6) are installed on the side of the twin-screw extruder body (1). A water tank replenishment pipe (7) is provided between the buffer tank (3) and the circulating water tank (5). A pump body replenishment pipe (8) is provided between the circulating water tank (5) and the vacuum pump (6). A first control valve (9) is provided on the pump body replenishment pipe (8). A suction pipe (10) is connected between the input end of the vacuum pump (6) and the buffer tank (3). A return water pipe (11) is connected between the output end of the vacuum pump (6) and the circulating water tank (5).

2. The vacuum water circulation device for a twin-screw extruder according to claim 1, characterized in that: The circulating water tank (5) is equipped with a high-level overflow pipe (12), a medium-level overflow pipe (13) and a low-level overflow pipe (14), and a second control valve (15) is installed on the low-level overflow pipe (14).

3. The vacuum water circulation device for a twin-screw extruder according to claim 2, characterized in that: The buffer tank (3) includes a tank body (31), a tank cover (32) is provided on the tank body (31), and a filter (33) is provided inside the tank body (31).

4. The vacuum water circulation device for a twin-screw extruder according to claim 3, characterized in that: The bottom of the tank (31) is provided with a residual water drain pipe (16), and a third control valve (17) is provided on the residual water drain pipe (16).

5. The vacuum water circulation device for a twin-screw extruder according to claim 1, characterized in that: The circulating water tank (5) includes a tank body (51), a tank cover (52) is provided on the tank body (51), and an air outlet pipe (53) is provided on the tank cover (52).

6. A vacuum water circulation device for a twin-screw extruder according to claim 2, characterized in that: The high-level overflow pipe (12), the middle-level overflow pipe (13) and the low-level overflow pipe (14) are located on the side of the circulating water tank (5), and the high-level overflow pipe (12), the middle-level overflow pipe (13) and the low-level overflow pipe (14) are arranged in order from top to bottom.

7. A vacuum water circulation device for a twin-screw extruder according to claim 4, characterized in that: One end of the high-level overflow pipe (12) is connected to the low-level overflow pipe (14), the middle-level overflow pipe (13) is connected to the high-level overflow pipe (12), a main drain pipe (18) is provided on the outside of the circulating water tank (5), and the low-level overflow pipe (14) and the residual water drain pipe (16) are both connected to the main drain pipe (18).

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