PVC pipe cooling device

Abstract

The utility model provides a PVC pipe cooling device which comprises a barrel, annular sealing plates arranged at the two ends of the barrel and a circulating water tank arranged on one side of the barrel, a water inlet is formed in the outer side face of the barrel, a spraying head is arranged on the inner wall of the barrel, and a drainage groove and a drainage pipe installed outside the barrel are arranged at the bottom of the barrel in a communicated mode. Annular ventilation pieces are arranged on the sealing plates, the ventilation piece on one sealing plate is connected with an air inlet pipe, and the ventilation piece on the other sealing plate is connected with an air outlet pipe. The drain pipe and the air outlet pipe are simultaneously connected to the top of the circulating water tank, and the bottom of the circulating water tank is communicated with the water inlet. According to the utility model, the cylinder body is connected with the circulating water tank, so that cooling water is recycled, and waste of water resources is reduced; and high-speed airflow parallel to the surface of the PVC pipe is formed in the cooling cavity, so that water mist attached to the outer wall of the PVC pipe is evaporated at a high speed, a large amount of heat is taken away, and the cooling efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC pipe processing, in particular to a PVC pipe cooling device. Background Art

[0002] PVC is the abbreviation of (Polyvinylchlorid), the main component of which is polyvinyl chloride, and other ingredients are added to enhance its heat resistance, toughness and ductility. The top layer of this surface film is paint, the main component in the middle is polyvinyl chloride, and the bottom layer is back-coated adhesive. It is a synthetic material that is well-loved, popular and widely used in the world today. PVC pipes are made of PVC material and prepared by hot pressing extrusion. They are the earliest plastic pipes developed and applied. PVC pipes have strong corrosion resistance, are easy to bond, are low in price and have a hard texture. Plastic pipes are used in drainage, wastewater, chemicals, heating and cooling liquids, food, ultra-pure liquids, mud, gas, compressed air and vacuum system applications.

[0003] The preparation process of PVC related materials mainly includes raw material preparation, mixing and feeding, extrusion molding, immersion cooling, traction cutting, testing and packaging, etc. On the production line, a corresponding traction machine is set at the output end of the PVC extruder. Through the traction effect of the traction machine, the PVC pipe is continuously output from the extruder, and it is cooled and shaped while being extruded. The cooling equipment currently used for PVC pipe processing is generally a spray structure, which uses a spray head to spray cooling water onto the surface of the PVC pipe for cooling and cooling. However, in this method, the contact time between the cooling water and the surface of the PVC pipe is limited, and the heat exchange is not sufficient, resulting in limited cooling effect; in this case, the traditional cooling structure needs to use a large amount of cooling water spray to play an effective cooling function, resulting in a waste of water resources. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a PVC pipe cooling device, which solves the problem in the prior art that the spray cooling structure is in contact with the PVC pipe for a period of time, the cooling effect is poor, and a large amount of cooling water is required to ensure the cooling function, resulting in a waste of water resources.

[0005] According to an embodiment of the utility model, a PVC pipe cooling device comprises a cylinder, an annular sealing plate arranged at both ends of the cylinder, and a circulating water tank arranged on one side of the cylinder, wherein a cooling cavity is formed inside the cylinder and the sealing plate, the side wall of the cylinder is a hollow structure, forming a water inlet channel, the outer side of the cylinder is provided with a water inlet connected to the water inlet channel, and a spray head is provided on the inner wall of the cylinder, wherein the spray head is just facing the central axis of the cylinder, and the distance between the spray head and the central axis of the cylinder is greater than the inner radius of the sealing plate; a drainage groove is provided at the bottom of the cylinder, and the bottom end of the drainage groove is connected to a drainage pipe installed outside the cylinder;

[0006] An annular vent is provided on the side of the sealing plate away from the cylinder, the vent penetrates the sealing plate and extends to the inside of the cylinder and communicates with the cooling cavity, the vent on one sealing plate is connected to an air inlet pipe, the air inlet pipe is connected to an air pump, and the vent on the other sealing plate is connected to an air outlet pipe;

[0007] The drain pipe and the air outlet pipe are simultaneously connected to the top of the circulating water tank, and the bottom of the circulating water tank is connected to the water inlet.

[0008] Furthermore, a plurality of spray heads are arranged on the inner wall of the cylinder, and the spray heads are evenly distributed inside the cylinder.

[0009] Furthermore, the inner diameter of the ventilator is larger than the inner diameter of the sealing plate.

[0010] Furthermore, the air inlet pipe is arranged on the sealing plate near the end of the cylinder, the air inlet pipe is connected to an air pump, and the air outlet pipe is arranged on the sealing plate near the head end of the cylinder.

[0011] Furthermore, a radiator is also provided inside the circulating water tank.

[0012] Furthermore, a filter is provided in the middle of the circulating water tank, the drain pipe and the air outlet pipe are connected to the area above the filter, and the water inlet is connected to the area below the filter.

[0013] Furthermore, the ventilation piece provided with the air inlet pipe is located in the cooling cavity and one end thereof is connected to a ring-shaped air injection port.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. In the utility model, the cylinder is connected to the circulating water tank, wherein the drain pipe and the gas outlet pipe respectively return the cooling water remaining in the cylinder and the discharged gas containing a large amount of water mist to the circulating water tank for recycling, and then the collected cooling water is transported to the water inlet pipe and re-added to the cylinder for use, thereby recycling the cooling water and reducing the waste of water resources;

[0016] 2. In the present invention, a closed structure is formed by utilizing a cylinder and a sealing plate, so that the PVC pipe passes through the cooling cavity just from the inside of the sealing plate. At this time, a spray head arranged on the inner wall of the cylinder sprays water mist at the outer surface of the PVC pipe, so that it adheres to the outside of the PVC pipe. Then, the vents on the two sealing plates are respectively provided with an air inlet pipe and an air outlet pipe. The former is connected to an air pump, thereby forming a high-speed airflow parallel to the surface of the PVC pipe inside the cooling cavity. According to the physical principle that the evaporation rate of water is positively correlated with the surface wind speed, the water mist attached to the outer wall of the PVC pipe evaporates at a high speed, thereby taking away a large amount of heat, greatly improving the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of an embodiment of the utility model.

[0018] Figure 2 It is a schematic diagram of the structure of the cylinder and the sealing plate in the embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of the internal structure of the cylinder and the sealing plate in the embodiment of the utility model.

[0020] Figure 4 It is a front schematic diagram of the cylinder in the embodiment of the utility model.

[0021] In the above drawings: 1. Cylinder; 2. Sealing plate; 3. Circulating water tank; 4. Air inlet pipe; 5. Air outlet pipe; 6. Drain pipe; 7. Ventilation piece; 8. Spray head; 9. Jet nozzle; 11. Water inlet; 12. Cooling chamber; 13. Drain tank; 31. Filter. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1 As shown, the embodiment of the utility model proposes a PVC pipe cooling device, comprising a cylinder 1, annular sealing plates 2 arranged at both ends of the cylinder 1, and a circulating water tank 3 arranged on one side of the cylinder 1. The cylinder 1 is a cylinder, the sealing plate 2 is a circular ring structure, and the inner diameter of the sealing plate 2 is smaller than the inner diameter of the cylinder 1, so that the cylinder 1 and the sealing plate 2 form a cooling cavity 12 with closed ends, wherein the outer diameter of the PVC pipe matches the inner diameter of the sealing plate 2, so that it just passes through the middle of the sealing plate 2.

[0024] like Figure 2As shown, in this embodiment, the side wall of the cylinder 1 is a hollow structure to form a water inlet channel, and the outer side of the cylinder 1 is provided with a water inlet 11 connected to the water inlet channel, and a spray head 8 is provided on the inner wall of the cylinder 1, and the spray head 8 is just facing the central axis of the cylinder 1, and the distance between the spray head 8 and the central axis of the cylinder 1 is greater than the inner radius of the sealing plate 2. Preferably, a plurality of spray heads 8 are provided on the inner wall of the cylinder 1, and the spray heads 8 are evenly distributed inside the cylinder 1. A drainage groove 13 is provided at the bottom of the cylinder 1, and the bottom end of the drainage groove 13 is connected to a drainage pipe 6 installed outside the cylinder 1 to discharge the cooling water condensed inside the cooling chamber 12.

[0025] like Figure 3 , Figure 4 As shown, correspondingly, an annular vent 7 is provided on the side of the sealing plate 2 away from the cylinder 1, and the inner diameter of the vent 7 is larger than the inner diameter of the sealing plate 2. The vent 7 penetrates the sealing plate 2 and extends to the inside of the cylinder 1 and is connected to the cooling chamber 12, wherein the vent 7 on one sealing plate 2 is connected to an air inlet pipe 4, and the air inlet pipe 4 is connected to an air pump, and the vent 7 on the other sealing plate 2 is connected to an air outlet pipe 5. Preferably, the vent 7 provided with the air inlet pipe 4 is located in the cooling chamber 12 and is also connected to an annular jet port 9 at one end, so as to make the air flow output more uniform and stable. When the air pump blows high-pressure air into the cooling chamber 12 through the air inlet pipe 4, a high-speed airflow parallel to the surface of the PVC pipe is formed inside the cooling chamber 12. According to the physical principle that the evaporation rate of water is positively correlated with the surface wind speed, the water mist attached to the outer wall of the PVC pipe evaporates at a high speed at this time, thereby taking away a large amount of heat. In the preferred solution, the air inlet pipe 4 is arranged on the sealing plate 2 near the end of the cylinder 1, and the air inlet pipe 4 is connected to an air pump, and the air outlet pipe 5 is arranged on the sealing plate 2 near the head end of the cylinder 1, so that the air flow direction is opposite to the moving direction of the PVC pipe, so that the temperature difference between the gas containing water mist and the surface of the PVC pipe is more uniform, further improving the cooling effect.

[0026] In addition, in this embodiment, the drain pipe 6 and the air outlet pipe 5 are simultaneously connected to the top of the circulating water tank 3, and the bottom of the circulating water tank 3 is connected to the water inlet 11. The drain pipe 6 and the air outlet pipe 5 return the cooling water remaining in the cylinder 1 and the discharged gas containing a large amount of water mist to the circulating water tank 3 for recycling, and then transport the collected cooling water to the water inlet pipe and re-add it to the cylinder 1 for use, so as to play the function of recycling cooling water. Furthermore, a radiator is also provided inside the circulating water tank 3, and the radiator can use a conventional tube-and-tube radiator structure, thereby cooling the recovered cooling water after heat absorption to room temperature, thereby improving the cooling effect during subsequent reuse. Preferably, a filter screen 31 is provided in the middle of the circulating water tank 3, the drain pipe 6 and the air outlet pipe 5 are connected to the area above the filter screen 31, and the water inlet 11 is connected to the area below the filter screen 31. Impurities such as dust and plastic particles contained in the cooling water can be removed by the filter screen 31 to avoid clogging the water pipe.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A PVC pipe cooling device, characterized in that: It comprises a cylinder, an annular sealing plate arranged at both ends of the cylinder and a circulating water tank arranged at one side of the cylinder, a cooling cavity is formed inside the cylinder and the sealing plate, the side wall of the cylinder is a hollow structure, forming a water inlet channel, the outer side of the cylinder is provided with a water inlet connected to the water inlet channel, a spray head is provided on the inner wall of the cylinder, the spray head is just facing the central axis of the cylinder, and the distance between the spray head and the central axis of the cylinder is greater than the inner radius of the sealing plate; a drainage groove is provided at the bottom of the cylinder, and the bottom end of the drainage groove is connected to a drainage pipe installed outside the cylinder; An annular vent is provided on the side of the sealing plate away from the cylinder, the vent penetrates the sealing plate and extends to the inside of the cylinder and communicates with the cooling cavity, the vent on one sealing plate is connected to an air inlet pipe, the air inlet pipe is connected to an air pump, and the vent on the other sealing plate is connected to an air outlet pipe; The drain pipe and the air outlet pipe are simultaneously connected to the top of the circulating water tank, and the bottom of the circulating water tank is connected to the water inlet.

2. A PVC pipe cooling device as claimed in claim 1, characterized in that: A plurality of spray heads are arranged on the inner wall of the cylinder, and the spray heads are evenly distributed inside the cylinder.

3. A PVC pipe cooling device as claimed in claim 1, characterized in that: The inner diameter of the ventilator is greater than the inner diameter of the sealing plate.

4. A PVC pipe cooling device as claimed in claim 1, characterized in that: The air inlet pipe is arranged on the sealing plate near the end of the cylinder, the air inlet pipe is connected with an air pump, and the air outlet pipe is arranged on the sealing plate near the head end of the cylinder.

5. A PVC pipe cooling device as claimed in claim 1, characterized in that: A radiator is also arranged inside the circulating water tank.

6. A PVC pipe cooling device as claimed in claim 1, characterized in that: A filter screen is provided in the middle of the circulating water tank, the drain pipe and the air outlet pipe are connected to the area above the filter screen, and the water inlet is connected to the area below the filter screen.

7. A PVC pipe cooling device as claimed in claim 1, characterized in that: The ventilation piece provided with an air inlet pipe is located in the cooling cavity and one end of the ventilation piece is connected with an annular air injection port.

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