Temperature control device for PVC plasticizing process

Abstract

The utility model discloses a temperature control device for a PVC (polyvinyl chloride) plasticizing process, which comprises a cooling box, a plurality of partition plates are arranged in the cooling box, the partition plates divide the cooling box into a plurality of cooling spaces, temperature sensors are arranged in the cooling spaces, a heat dissipation box is arranged on the ground on one side of the cooling box, and a temperature sensor is arranged in the heat dissipation box. An overflow pipe is installed on one side of the lower end of the cooling space, a cold water tank is installed on the ground on one side of the cooling box, an electromagnetic valve is installed on one side of the cooling space, the cold water tank is connected with the electromagnetic valve through a water adding pipe, and a water pumping device is installed at one end of the cooling box. The utility model has the beneficial effects that water is added into the cold water tank in advance, and the size of the electromagnetic valve is adjusted according to the water temperature in the heat dissipation tank, so that the water can be added into the cooling space under the action of gravity, the water temperature can be conveniently adjusted, the electric energy is saved, and the cooling temperature difference can be conveniently controlled; the problem that the quality of formed parts is affected by large internal stress is solved, and the product quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of PVC product processing equipment, and more specifically, to a temperature control device for the PVC plasticizing process. Background Technology

[0002] PVC is the world's most produced general-purpose plastic with a wide range of applications, including building materials, industrial products, daily necessities, floor coverings, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, and fibers. After extrusion molding, PVC products need to be cooled.

[0003] In existing technologies, water cooling is generally used when cooling PVC products. Water is sprayed onto the PVC products to cool them. However, when PVC products are freshly extruded, their temperature is high. If low-temperature water is sprayed onto the PVC products, it will affect the quality of the PVC products. Therefore, it is necessary to adjust the temperature of the cooling water. Generally, the cooling water temperature is adjusted by changing the power of the water pump, thereby adjusting the rate at which cold water enters the cooling tank. However, this requires the water pump to be run for a long time, which not only wastes electricity but is also inconvenient to adjust. Utility Model Content

[0004] The purpose of this invention is to solve the problem of wasting electrical energy by adding cold water into the cooling tank, and to design a temperature control device for the PVC plasticizing process.

[0005] To achieve the above objectives, the technical solution of this utility model is a temperature control device for the PVC plasticizing process, comprising a cooling box, which is mounted on the ground via multiple support legs. Multiple partitions are installed inside the cooling box, dividing it into multiple cooling spaces. Cooling water at different temperatures is placed below each of the multiple cooling spaces, with the water near the cooling box inlet having a higher temperature and the water near the cooling box outlet having a lower temperature. Temperature sensors are installed within each cooling space. Water in the cooling space is sprayed onto the outside of PVC pipes via a sprayer. A heat sink is installed on the ground to one side of the cooling box. An overflow pipe is installed on one side of the lower end of each cooling space, allowing water in the cooling space to enter the heat sink through the overflow pipe. A cold water tank is installed on the ground to one side of the cooling box. An electromagnetic valve is installed on one side of the cooling space. The cold water tank is connected to the electromagnetic valve via a water inlet pipe, and the electromagnetic valve automatically adjusts the water flow. The height of the cold water tank is higher than the height of the cooling box. A water pump is installed at one end of the heat sink, allowing water to be drawn into the cold water tank.

[0006] Furthermore, a baffle is installed inside the cold water tank, which divides the cold water tank into two water storage spaces, and a constant temperature refrigerator is installed in each water storage space.

[0007] Furthermore, the water pump includes a water pump installed inside a heat sink, a liquid level sensor installed inside the heat sink, a three-way inlet valve installed at the lower end of the cold water tank, the water pump being connected to the inlet end of the three-way inlet valve via a first inlet pipe, a second inlet pipe installed on one side of the water storage space, and the two outlet ends of the three-way inlet valve being connected to the second inlet pipe respectively.

[0008] Furthermore, the water supply pipe includes an outlet pipe installed on one side of the water storage space, and an outlet three-way valve is installed at the lower end of the cold water tank. The inlet end of the outlet three-way valve is connected to two outlet pipes respectively, and the outlet end of the outlet three-way valve is connected to multiple solenoid valves through a multi-way pipe.

[0009] Furthermore, the solenoid valve is installed on the side of the cooling space away from the inlet end of the cooling box, and the overflow pipe is installed on the side of the cooling space close to the inlet end of the cooling box.

[0010] The beneficial effects of this utility model are as follows: Water is added to the cold water tank in advance, and the size of the electromagnetic valve is adjusted according to the water temperature in the heat dissipation box. Under the action of gravity, water is added to the cooling space, which makes it easy to adjust the water temperature and saves energy. In addition, multiple cooling spaces are set in the cooling box, which can gradually reduce the water temperature and make it easy to control the cooling temperature difference. This solves the problem of the quality of the molded parts being affected by large internal stress and ensures the quality of the product. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a temperature control device for the PVC plasticizing process described in this utility model;

[0012] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0013] Figure 3 This is a rear view of a temperature control device for the PVC plasticizing process described in this utility model;

[0014] Figure 4 This is a rear-view cross-sectional schematic diagram of a temperature control device for the PVC plasticizing process described in this utility model;

[0015] Figure 5 This is a top-view cross-sectional schematic diagram of a temperature control device for the PVC plasticizing process described in this utility model;

[0016] In the diagram, 1. Cooling tank; 2. Support leg; 3. Baffle; 4. Cooling space; 5. Temperature sensor; 6. Heat sink; 7. Overflow pipe; 8. Cold water tank; 9. Solenoid valve; 10. Water inlet pipe; 11. Water pump; 12. Baffle; 13. Water storage space; 14. Thermostatic refrigerator; 15. Water pump; 16. Liquid level sensor; 17. Inlet three-way valve; 18. First inlet pipe; 19. Second inlet pipe; 20. Outlet pipe; 21. Outlet three-way valve; 22. Multi-way pipe. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] This utility model provides, for example Figure 1-5The device shown is a temperature control system for a PVC plasticizing process. It includes a cooling tank 1, which is mounted on the ground via multiple support legs 2. Multiple partitions 3 are installed inside the cooling tank 1, dividing it into multiple cooling spaces 4. Cooling water at different temperatures is placed below each cooling space 4; the cooling water near the inlet of the cooling tank 1 has a higher temperature, while the cooling water near the outlet has a lower temperature. Temperature sensors 5 are installed within each cooling space 4. The water in each cooling space 4 is sprayed onto the outside of PVC pipes via sprayers for cooling. A heat sink 6 is installed on the ground on one side of the cooling box 1. An overflow pipe 7 is installed on the lower side of the cooling space 4. Water in the cooling space 4 can enter the heat sink 6 through the overflow pipe 7. A cold water tank 8 is installed on the ground on one side of the cooling box 1. A solenoid valve 9 is installed on one side of the cooling space 4. The cold water tank 8 is connected to the solenoid valve 9 through a water supply pipe 10. The solenoid valve 9 can automatically adjust the water flow. The height of the cold water tank 8 is higher than the height of the cooling box 1. A water pump 11 is installed at one end of the heat sink 6. The water pump 11 can draw water into the cold water tank 8.

[0020] The cooling process of this device for PVC products is as follows: After the PVC product is extruded and formed, it enters from the inlet end of the cooling tank 1 and then moves out from the outlet end. The solenoid valve 9 is opened, and the water in the cold water tank 8 enters the cooling space 4 through the water inlet pipe 10 and the solenoid valve 9, and mixes with the water in the cooling space 4, thereby adjusting the water temperature. The temperature sensor 5 detects the water temperature in the cooling space 4. When the temperature is too high, the solenoid valve 9 is opened wider; when the temperature is too low, the solenoid valve 9 is opened narrower, thus ensuring that the water in the cooling space 4 is in a suitable state. Water is sprayed onto the outside of the PVC product through the water sprayer to cool the PVC product. When the water in the cooling space 4 is higher than the overflow pipe 7, it enters the heat dissipation tank 6 through the overflow pipe 7. After being cooled by the heat dissipation tank 6, the water is pumped into the cold water tank 8 by the water pump 11, thus realizing water circulation.

[0021] Refer to the instruction manual appendix Figure 4 A baffle 12 is installed inside the cold water tank 8, which divides the cold water tank 8 into two water storage spaces 13. A thermostatic refrigerator 14 is installed in the water storage space 13. The temperature of the water in the water storage space 13 can be adjusted by the thermostatic refrigerator 14. The baffle 12 can isolate the two water storage spaces 13, so that water can enter and exit one water storage space 13 and the water temperature can be adjusted in the other water storage space 13.

[0022] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 3The water pump 11 includes a water pump 15 installed in the heat sink 6. A liquid level sensor 16 is installed in the heat sink 6. A three-way valve 17 is installed at the lower end of the cold water tank 8. The water pump 15 is connected to the inlet end of the three-way valve 17 through a first inlet pipe 18. A second inlet pipe 19 is installed on one side of the water storage space 13. The two outlet ends of the three-way valve 17 are respectively connected to the second inlet pipe 19.

[0023] The process of the water pump 11 drawing water into the cold water tank 8 is as follows: The water level in the heat sink 6 is detected by the liquid level sensor 16. When the water level is too high, the water pump 15 is started. The water pump 15 can draw water from the heat sink 6 into a water storage space 13 through the first water inlet pipe 18, the water inlet three-way valve 17, and the second water inlet pipe 19. Then, the water is cooled by the constant temperature cooler 14. By changing the outlet end of the water inlet three-way valve 17, water can be added to the two water storage spaces 13 respectively.

[0024] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 2 Instruction manual attached Figure 4 Included with instruction manual Figure 5 The water supply pipe 10 includes an outlet pipe 20 installed on one side of the water storage space 13. A three-way outlet valve 21 is installed at the lower end of the cold water tank 8. The inlet end of the three-way outlet valve 21 is connected to two outlet pipes 20 respectively, and the outlet end of the three-way outlet valve 21 is connected to multiple solenoid valves 9 through a multi-way pipe 22.

[0025] The process of water entering the cooling space 4 from the water storage space 13 is as follows: When the water temperature in the water storage space 13 decreases, the inlet end of the outlet three-way valve 21 is opened, and then water is added to different cooling spaces 4 through the outlet pipe 20, the outlet three-way valve 21, the multi-way pipe 22 and the solenoid valve 9. The water inflow can be adjusted by adjusting the opening size of the solenoid valve 9.

[0026] Refer to the instruction manual appendix Figure 5 The solenoid valve 9 is installed on the side of the cooling space 4 away from the inlet end of the cooling box 1, and the overflow pipe 7 is installed on the side of the cooling space 4 near the inlet end of the cooling box 1, so that water can flow in the cooling space 4 and the water temperature on the side near the inlet end of the cooling box 1 is higher and the water temperature on the side away from the inlet end of the cooling box 1 is lower.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A temperature control device for a PVC plasticizing process, comprising a cooling box (1), the cooling box (1) being mounted on the ground by multiple support legs (2), multiple partitions (3) being installed inside the cooling box (1), the partitions (3) dividing the cooling box (1) into multiple cooling spaces (4), cooling water of different temperatures being placed below each of the multiple cooling spaces (4), the cooling water near the inlet of the cooling box (1) having a higher temperature, and the cooling water near the outlet of the cooling box (1) having a lower temperature, a temperature sensor (5) being installed inside each cooling space (4), and the water in the cooling space (4) being sprayed onto the outside of a PVC pipe by a water sprayer, characterized in that, A heat sink (6) is installed on the ground on one side of the cooling box (1). An overflow pipe (7) is installed on one side of the lower end of the cooling space (4). Water in the cooling space (4) can enter the heat sink (6) through the overflow pipe (7). A cold water tank (8) is installed on the ground on one side of the cooling box (1). An electromagnetic valve (9) is installed on one side of the cooling space (4). The cold water tank (8) is connected to the electromagnetic valve (9) through a water supply pipe (10). The electromagnetic valve (9) can automatically adjust the water flow. The height of the cold water tank (8) is higher than the height of the cooling box (1). A water pump (11) is installed at one end of the heat sink (6). The water pump (11) can pump water into the cold water tank (8).

2. The temperature control device for the PVC plasticizing process according to claim 1, characterized in that, The cold water tank (8) is equipped with a baffle (12), which divides the cold water tank (8) into two water storage spaces (13), and a constant temperature refrigerator (14) is installed in the water storage space (13).

3. The temperature control device for the PVC plasticizing process according to claim 2, characterized in that, The water pump (11) includes a water pump (15) installed in the heat sink (6). A liquid level sensor (16) is installed in the heat sink (6). A three-way valve (17) is installed at the lower end of the cold water tank (8). The water pump (15) is connected to the inlet end of the three-way valve (17) through a first inlet pipe (18). A second inlet pipe (19) is installed on one side of the water storage space (13). The two outlet ends of the three-way valve (17) are respectively connected to the second inlet pipe (19).

4. The temperature control device for the PVC plasticizing process according to claim 2, characterized in that, The water supply pipe (10) includes an outlet pipe (20) installed on one side of the water storage space (13). The lower end of the cold water tank (8) is equipped with an outlet three-way valve (21). The inlet end of the outlet three-way valve (21) is connected to two outlet pipes (20) respectively. The outlet end of the outlet three-way valve (21) is connected to multiple solenoid valves (9) through a multi-way pipe (22).

5. The temperature control device for the PVC plasticizing process according to claim 1, characterized in that, The solenoid valve (9) is installed on the side of the cooling space (4) away from the inlet end of the cooling box (1), and the overflow pipe (7) is installed on the side of the cooling space (4) close to the inlet end of the cooling box (1).

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