A cooling device for PVC production

Abstract

This utility model relates to the technical field of PVC production equipment and discloses a cooling device for PVC production, including a base frame. A cooling water tank for PVC extrusion production is installed on the base frame. A partition is provided on one side of the inner cavity of the cooling water tank, dividing the cooling water tank into a cooling zone and an overflow zone. An upper inlet pipe and a lower inlet pipe are fixedly connected to the upper and lower sides of the left end of the cooling zone. The upper and lower inlet pipes are connected to the same main inlet pipe, and a water pump is connected to the inlet side of the main inlet pipe. An upper drain outlet and a lower drain outlet are respectively provided on the upper and lower sides of the partition. A backflow preventer is installed in the overflow zone, and a drain pipe is connected to the bottom right side of the backflow preventer in the overflow zone. This utility model can effectively clean impurities on the surface and bottom of the cooling water, preventing impurities from affecting the quality of the PVC extruded pipe.

Description

Technical Field

[0001] This utility model belongs to the technical field of PVC production equipment, specifically a cooling device for PVC production. Background Technology

[0002] In PVC pipe extrusion production, the extruded PVC pipes are directly immersed in a cooling water tank. The extruder cooling water tank is a key component of plastic processing equipment, mainly used to cool the plastic melt or semi-finished product during the extrusion molding process to control the temperature and ensure product quality. The aforementioned cooling water tank uses water as the cooling medium, and the cooling water is recycled. A cooling machine is used to circulate the water, thereby ensuring the cooling effect.

[0003] In practical use, the applicant found that when PVC pipes are immersed in water for cooling, impurities easily float and accumulate on the surface and bottom of the water during the circulating flow. The existing cooling water tanks lack a good cleaning structure, causing these impurities to easily adhere to the surface of the PVC pipes, thus affecting the quality of the PVC pipes in the later stages. In order to solve the above-mentioned problems, a cooling device for PVC production is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a cooling device for PVC production in order to solve the problems mentioned above.

[0005] The technical solution adopted by this utility model is as follows: A cooling device for PVC production includes a base frame, on which a cooling water tank for PVC extrusion production is installed. A partition is provided on one side of the inner cavity of the cooling water tank, dividing the cooling water tank into a cooling zone and an overflow zone. An upper water inlet pipe and a lower water inlet pipe are fixedly connected to the upper and lower sides of the left end of the cooling zone. The upper water inlet pipe and the lower water inlet pipe are connected to the same main water inlet pipe. A water pump is connected to the water inlet side of the main water inlet pipe. An upper drain outlet and a lower drain outlet are respectively opened on the upper and lower sides of the partition. A backflow preventer is installed in the overflow zone, and a drain pipe is connected to the bottom right side of the overflow zone.

[0006] In a preferred embodiment, guide rollers 1 are provided on both sides of the upper part of the cooling water tank, and support plates are rotatably connected to both ends of the guide rollers 1. The support plates are fixedly installed on the cooling water tank. Several guide rollers 2 are rotatably connected to the inner wall of the cooling zone. Several annular guide grooves are constructed on the outer walls of the guide rollers 1 and 2.

[0007] In a preferred embodiment, both the upper water inlet pipe and the lower water inlet pipe are equipped with duckbill water outlets.

[0008] In a preferred embodiment, a check valve is installed on the outlet side of the main inlet pipe.

[0009] In a preferred embodiment, a ball valve is installed on the inlet side of the drain pipe, and a fine-tuning gate valve is installed on the inlet side of the ball valve on the drain pipe.

[0010] In a preferred embodiment, the water level in the cooling zone of the cooling water tank is between the upper drain outlets, and the anti-water plate is lower than the upper drain outlet.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0012] 1. In this utility model, the upper drain outlet in the partition facilitates the flow of water from the water surface into the overflow area. The anti-water plate forms an overflow siphon structure, so that the water flow at the bottom of the cooling zone is siphoned from the lower drain outlet into the overflow area. During the drainage process, the water flow force of the upper inlet pipe can blow impurities on the water surface of the cooling zone to the upper drain outlet. Similarly, the water flow force of the lower inlet pipe can push impurities at the bottom of the cooling zone to the lower drain outlet, thereby enhancing the cleaning effect. The entire structure can effectively clean impurities on the water surface and in the water in the cooling zone, thereby preventing impurities from contaminating the PVC extruded pipe and affecting the quality of the PVC extruded pipe. Attached Figure Description

[0013] Figure 1 This is a simplified schematic diagram of the three-dimensional structure of this utility model;

[0014] Figure 2 This is a simplified schematic diagram of the internal structure of this utility model from the front view;

[0015] Figure 3 This is a simplified three-dimensional structural diagram of the partition plate of this utility model.

[0016] The markings in the diagram are: 1-Base frame; 2-Cooling water tank; 3-Baffle plate; 4-Cooling area; 5-Overflow area; 6-Upper inlet pipe; 7-Lower inlet pipe; 8-Main inlet pipe; 9-Water pump; 10-Upper drain outlet; 11-Lower drain outlet; 12-Reverse flow plate; 13-Drain pipe; 14-Guide roller one; 15-Support plate; 16-Guide roller two; 17-Annular guide groove; 18-Duckbill water outlet; 19-Check valve; 20-Ball valve; 21-Fine-tuning gate valve. 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 in conjunction with the embodiments of this utility model. 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] The following will combine Figures 1-3 A detailed description of a cooling device for PVC production according to an embodiment of the present invention will be provided.

[0019] Example:

[0020] This utility model provides a cooling device for PVC production, see reference. Figures 1 to 3 As shown, the system includes a base frame 1, on which a PVC extrusion production cooling water tank 2 is mounted. A partition 3 is installed on one side of the inner cavity of the cooling water tank 2, dividing it into a cooling zone 4 and an overflow zone 5. An upper water inlet pipe 6 and a lower water inlet pipe 7 are fixedly connected to the upper and lower sides of the left end of the cooling zone 4. The upper water inlet pipe 6 and the lower water inlet pipe 7 are connected to the same main water inlet pipe 8. A water pump 9 is connected to the inlet side of the main water inlet pipe 8. An upper drain outlet 10 and a lower drain outlet 11 are respectively provided on the upper and lower sides of the partition 3. A backflow preventer 12 is installed in the overflow zone 5. The cooling water in the cooling water tank 2... The water level in the cooling zone 4 is between the upper drain outlet 10 and the top of the anti-water plate 12 is lower than the upper drain outlet 10. The overflow zone 5 is located at the bottom right of the anti-water plate 12 and is connected to the drain pipe 13. In this embodiment, the PVC extruded pipe will be cooled by the cooling water in the cooling zone, and the cooling water will be discharged into the overflow zone 5 through the drain outlet of the partition 3, and finally discharged back into the cooling equipment by the drain pipe 13. Then the cooling equipment cools the water and pumps the water into the main water inlet pipe 8 through the water pump 9, and then discharges it into the cooling zone 4 through the water inlet pipe 7, thereby realizing the circulating cooling operation of the cooling water.

[0021] The upper drain outlet 10 in the partition 3 facilitates the flow of water from the water surface into the overflow area 5. The anti-water plate 12 forms an overflow siphon structure, so that the water at the bottom of the cooling zone 4 is siphoned from the lower drain outlet 11 into the overflow area 5. During the drainage process, the water flow force of the upper water inlet pipe 6 can blow impurities on the water surface of the cooling zone 4 to the upper drain outlet 11. Similarly, the water flow force of the lower water inlet pipe 7 can push impurities at the bottom of the cooling zone 4 to the lower drain outlet 11, thereby enhancing the cleaning effect. The entire structure can effectively clean impurities on the water surface and in the water in the cooling zone 4, thereby preventing impurities from contaminating the PVC extruded pipe and affecting the quality of the PVC extruded pipe.

[0022] It should be noted that the inlet of the main water inlet pipe 8 is connected to the outlet of the external cooler, and the outlet of the drain pipe 13 is connected to the return water pool of the cooler. A filter device is installed in the middle to filter the return water. The specific cooling and filtration devices for the circulating water are well known to those skilled in the art, so they will not be described in detail here.

[0023] refer to Figures 1 to 3As shown, guide rollers 14 are provided on both sides of the upper part of the cooling water tank 2. Support plates 15 are rotatably connected to both ends of the guide rollers 14. The support plates 15 are fixedly installed on the cooling water tank 2. Several guide rollers 26 are rotatably connected to the inner wall of the cooling zone 4. Several annular guide grooves 17 are constructed on the outer walls of the guide rollers 14 and 26. In this structure, the PVC extrusion tube can be arranged along the guide rollers 14 and 26, thereby guiding the PVC extrusion tube. The annular guide grooves 17 of the guide rollers 14 and 26 limit the left and right positions of the PVC extrusion tube.

[0024] refer to Figures 1 to 3 As shown, both the upper water inlet pipe 6 and the lower water inlet pipe 7 are equipped with duckbill water outlets 18. In this structure, the duckbill water outlets 18 can expand the water spray range, thereby achieving a wide range of water flow rinsing.

[0025] refer to Figures 1 to 3 As shown, a check valve 19 is installed on the outlet side of the main water inlet pipe 8. In this structure, the check valve 19 is used to prevent the water in the cooling zone 4 from siphoning back.

[0026] refer to Figures 1 to 3 As shown, a ball valve 20 is installed on the inlet side of the drain pipe 13, and a fine-tuning gate valve 21 is installed on the inlet side of the ball valve 20 on the drain pipe 13. This structure uses the ball valve 20 to control the opening and closing of the drain pipe 13, and uses the fine-tuning gate valve 21 to fine-tune the outflow rate, thereby adjusting the balance of inlet and outlet water.

[0027] The implementation principle of a PVC production cooling device according to an embodiment of this application is as follows: When in use, the PVC extrusion pipe is cooled by the cooling water in the cooling zone, and the cooling water is discharged into the overflow zone 5 through the drain port of the partition 3, and finally discharged back into the cooling equipment through the drain pipe 13. Then, after the cooling equipment cools the water, the water is pumped into the main water inlet pipe 8 by the water pump 9, and then discharged into the cooling zone 4 through the water inlet pipe 7, thereby realizing the circulating cooling operation of the cooling water.

[0028] The upper drain outlet 10 in the partition 3 facilitates the flow of water from the water surface into the overflow area 5. The anti-water plate 12 forms an overflow siphon structure, so that the water at the bottom of the cooling zone 4 is siphoned from the lower drain outlet 11 into the overflow area 5. During the drainage process, the water flow force of the upper water inlet pipe 6 can blow impurities on the water surface of the cooling zone 4 to the upper drain outlet 11. Similarly, the water flow force of the lower water inlet pipe 7 can push impurities at the bottom of the cooling zone 4 to the lower drain outlet 11, thereby enhancing the cleaning effect. The entire structure can effectively clean impurities on the water surface and in the water in the cooling zone 4, thereby preventing impurities from contaminating the PVC extruded pipe and affecting the quality of the PVC extruded pipe.

[0029] This specification includes any feature disclosed in any appended claims, abstract, and drawings, which, unless specifically stated otherwise, may be replaced by other equivalent or similar features. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0030] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] The terms used in this invention, such as “above,” “over,” “below,” and “under,” indicating spatial relative position, are for ease of explanation and to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms of spatial relative position may be intended to include different orientations of the device in use or operation other than those shown in the figures. For example, if the device in the figures is flipped, a unit described as being “below” or “under” other units or features would be located “above” other units or features. Therefore, the exemplary term “under” can encompass both above and below orientations. The device may be otherwise oriented, rotated 90 degrees, or otherwise, and the spatially related descriptive terms used herein shall be interpreted accordingly.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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. Such 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 this utility model.

Claims

1. A cooling device for PVC production comprising a base frame (1), characterized in that: A cooling water tank (2) for PVC extrusion production is installed on the base frame (1). A partition (3) is provided on one side of the inner cavity of the cooling water tank (2). The partition (3) divides the cooling water tank (2) into a cooling zone (4) and an overflow zone (5). An upper water inlet pipe (6) and a lower water inlet pipe (7) are fixedly connected to the upper and lower sides of the left end of the cooling zone (4). The upper water inlet pipe (6) and the lower water inlet pipe (7) are connected to the same main water inlet pipe (8). A water pump (9) is connected to the water inlet side of the main water inlet pipe (8). An upper drain outlet (10) and a lower drain outlet (11) are respectively opened on the upper and lower sides of the partition (3). A backflow preventer (12) is installed in the overflow zone (5). A drain pipe (13) is connected to the bottom right side of the overflow zone (5).

2. The cooling device for PVC production according to claim 1, characterized in that: The upper two sides of the cooling water tank (2) are provided with guide rollers (14), and the two ends of the guide rollers (14) are rotatably connected with support plates (15). The support plates (15) are fixedly installed on the cooling water tank (2). Several guide rollers (16) are rotatably connected to the inner wall of the cooling zone (4). The outer walls of the guide rollers (14) and the guide rollers (16) are constructed with several annular guide grooves (17).

3. The cooling device for PVC production according to claim 1, characterized in that: Both the upper water inlet pipe (6) and the lower water inlet pipe (7) are equipped with duckbill water outlets (18).

4. The cooling device for PVC production according to claim 1, characterized in that: A check valve (19) is installed on the outlet side of the main inlet pipe (8).

5. The cooling device for PVC production according to claim 1, characterized in that: A ball valve (20) is installed on the inlet side of the drain pipe (13), and a fine-tuning gate valve (21) is installed on the inlet side of the ball valve (20) on the drain pipe (13).

6. The cooling device for PVC production according to claim 1, characterized in that: The water level in the cooling zone (4) within the cooling water tank (2) is between the upper drain outlet (10), and the top of the anti-water plate (12) is lower than the upper drain outlet (10).

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