A cooling device for PP pipe processing

Abstract

The utility model discloses a kind of cooling device for PP tubular product processing, including multiple cooling water tank along linear arrangement and the downstream side of cooling water tank corresponding tubular product conveying is set to blowout slot, fan is inlaid and installed on blowout slot, the top of cooling water tank is installed with isolating cover, water channel located in the top of tubular product is fixed in isolating cover, each cooling water tank is correspondingly provided with pressurizing cylinder.The utility model is provided with multiple cooling water tank along tubular product production conveying direction, the water in the cooling water tank close to tubular product conveying upstream is contacted with tubular product early so temperature is high, tubular product temperature gradually reduces behind, the water temperature in corresponding cooling water tank also gradually reduces, simultaneously provided with blowout slot, there is water film on tubular product surface after water cooling, fan blowing reaches better air cooling effect, two kinds of cooling mode cooperate to cool tubular product, realize the purpose of tubular product to be cooled gradually in ladder type.

Description

Technical Field

[0001] This utility model relates to the technical field of PP pipe production equipment, specifically a cooling device for PP pipe processing. Background Technology

[0002] Cooling equipment plays a crucial role in the production process of PP pipes. Currently, the most commonly used equipment is the cold water spray box. Cooling water is sprayed onto the pipe through spray heads to cool the pipe in one step. The water flowing down the pipe is collected and then cooled by a chiller to achieve continuous cooling.

[0003] However, since the temperature of the freshly extruded pipes is high, the water temperature is lower than the room temperature when the chiller is used to cool them down. If the hot pipes are cooled down too quickly, it will not only cause the pipes to shrink too fast, but also lead to a decline in the performance of the sheet material, such as internal stress accumulation causing cracking, increased brittleness leading to a decrease in impact resistance, etc. Therefore, the cooling device for PP pipe processing is of great significance to ensuring product quality. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a cooling device for PP pipe processing, which solves the problem that excessively rapid cooling of PP pipes can easily affect product quality.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A cooling device for processing PP pipes includes multiple cooling water tanks arranged in a straight line and a blowing trough set on the downstream side of the cooling water tanks corresponding to the pipe conveying. A fan is embedded in the blowing trough. Rollers for supporting the pipe are set on the top of the cooling water tanks and the bottom of the inner wall of the blowing trough. An isolation cover is installed on the top of the cooling water tanks. The pipe passes through the isolation cover and the blowing trough laterally through the through holes set on both sides of the isolation cover and both sides of the blowing trough.

[0007] The isolation cover contains a water trough located above the pipe. The bottom of the water trough has a water outlet, and the top of the side wall of the water trough has an overflow trough. Each cooling water trough is equipped with a corresponding pressure cylinder. Multiple pressure cylinders are mounted together on the surface of a rotating shaft via sealed bearings located at the axial position. The rotating shaft is connected to a drive motor. The inside of each pressure cylinder has spiral blades fixed to the surface of the rotating shaft. The cooling water trough is connected to the pressure cylinder via an outlet pipe. A return water pipe is connected to the pressure cylinder, penetrating the isolation cover and extending to the top of the water trough.

[0008] Preferably, there are at least three cooling water tanks, and each pair of adjacent cooling water tanks has a heat insulation pad fixed to its opposite surface, and there is at least a 10-centimeter gap between the heat insulation pads on the opposite surfaces of two adjacent cooling water tanks.

[0009] Preferably, the blower is installed on the downstream side of the pipe corresponding to the air blowing trough, and there are multiple blowers arranged equidistantly around the circumference of the pipe.

[0010] Preferably, the bottom of the side wall of the air blowing trough away from the fan is provided with a drainage hole.

[0011] Preferably, the top of both the air duct and the isolation cover is hinged to a cover plate, the cover plate is fixed with a handle, and the cover plate is also provided with a buckle between the cover plate and the corresponding air duct and isolation cover.

[0012] Preferably, the width of the water channel is smaller than the diameter of the pipe.

[0013] Preferably, the water outlet pipe is located at the bottom of one end of the pressurizing cylinder, and the water return pipe is located at the top of the end of the pressurizing cylinder opposite to the water outlet pipe, and the diameter of the water outlet pipe is larger than the diameter of the water return pipe.

[0014] Preferably, sleeves fitted onto the surface of the pipe are installed at the corresponding through holes between two adjacent isolation covers and between the air duct and the adjacent isolation cover.

[0015] Preferably, the sleeve is a tapered plastic pipe with a diameter at the downstream end of the corresponding pipe being larger than the diameter at the upstream end of the corresponding pipe, and both ends of the sleeve are fixed with rubber gaskets.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This utility model has multiple cooling water tanks arranged along the pipe production and conveying direction. The water in the cooling water tank closest to the upstream of the pipe conveying is in contact with the pipe earlier, so its temperature is higher, forming a warm water cooling effect where the water temperature is lower than the pipe temperature. As the pipe temperature gradually decreases, the water temperature in the corresponding cooling water tank also gradually decreases. At the same time, a blower is provided. After water cooling, a water film forms on the surface of the pipe, and the blower achieves a better air cooling effect. The two cooling modes work together to cool the pipe, achieving the purpose of step-by-step gradual cooling of the pipe, achieving a gentle cooling effect. In addition, the blower also has the effect of drying the surface of the pipe to remove residual moisture. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the air blowing trough and the adjacent cooling water trough of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the cooling water tank of this utility model;

[0021] Figure 4This is a top view of the water trough of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the pressure cylinder of this utility model;

[0023] Figure 6 This is a top view of the pressure cylinder of this utility model;

[0024] Figure 7 This is a side view of the blower corresponding to the air duct of this utility model;

[0025] Figure 8 This is a schematic diagram of the internal structure of the air blowing channel of this utility model.

[0026] In the diagram: 1. Cooling water tank; 2. Pipe; 3. Air blower; 301. Drain hole; 4. Fan; 5. Roller; 6. Isolation cover; 7. Through hole; 8. Water channel; 801. Water outlet; 802. Overflow channel; 9. Pressurizing cylinder; 10. Shaft; 11. Drive motor; 12. Spiral blade; 13. Water outlet pipe; 14. Water return pipe; 15. Heat insulation pad; 16. Cover plate; 17. Handle; 18. Fastener; 19. Sleeve; 20. Rubber gasket. Detailed Implementation

[0027] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1-8 As shown, this utility model provides a technical solution: a cooling device for PP pipe processing, including multiple cooling water tanks 1 arranged in a straight line and a blowing trough 3 set on the downstream side of the pipe 2 corresponding to the cooling water tanks 1. There are at least three cooling water tanks 1, and heat insulation pads 15 are fixed on the opposite surfaces of two adjacent cooling water tanks 1, and at least a 10 cm gap is maintained between the heat insulation pads 15 on the opposite surfaces of two adjacent cooling water tanks 1.

[0029] A blower 4 is embedded in the air duct 3. The blower 4 is installed on the side of the air duct 3 corresponding to the downstream of the pipe 2. There are multiple blowers 4, which are equidistant from each other around the circumference of the pipe 2. A drain hole 301 is provided at the bottom of the side wall of the air duct 3 away from the blower 4.

[0030] Rollers 5 for supporting pipe 2 are provided at the top of cooling water tank 1 and the bottom of the inner wall of air blowing channel 3. An isolation cover 6 is installed on the top of cooling water tank 1. Pipe 2 passes through the isolation cover 6 and air blowing channel 3 laterally through the through holes 7 provided on both sides of the isolation cover 6 and the air blowing channel 3. The top of air blowing channel 3 and isolation cover 6 are movably hinged with cover plates 16. A handle 17 is fixed on the cover plate 16. A buckle 18 is also provided between the cover plate 16 and the corresponding air blowing channel 3 and isolation cover 6.

[0031] Inside the isolation cover 6, there is a water trough 8 located above the pipe 2. The width of the water trough 8 is smaller than the diameter of the pipe 2. A water hole 801 is provided at the bottom of the water trough 8, and an overflow trough 802 is provided at the top of the side wall of the water trough 8.

[0032] Each cooling water tank 1 is equipped with a corresponding pressure cylinder 9. Multiple pressure cylinders 9 are mounted together on the surface of a rotating shaft 10 through a sealed bearing located at the axial position. The rotating shaft 10 is connected to the drive motor 11. The interior of the pressure cylinder 9 is equipped with a spiral blade 12 fixed on the surface of the rotating shaft 10. The cooling water tank 1 is connected to the pressure cylinder 9 through a water outlet pipe 13. A return water pipe 14 is connected to the pressure cylinder 9, which penetrates the isolation cover 6 and extends to the top of the water tank 8. The water outlet pipe 13 is located at the bottom of one end of the pressure cylinder 9, and the return water pipe 14 is located at the top of the end of the pressure cylinder 9 opposite to the water outlet pipe 13. The diameter of the water outlet pipe 13 is larger than the diameter of the return water pipe 14.

[0033] A sleeve 19 is installed on the surface of the pipe 2 at the corresponding through hole 7 position between two adjacent isolation covers 6 and between the air duct 3 and the adjacent isolation cover 6. The sleeve 19 is a tapered plastic pipe with a diameter at the downstream end of the corresponding pipe 2 that is larger than the diameter at the upstream end of the corresponding pipe 2. Both ends of the sleeve 19 are fixed with rubber gaskets 20.

[0034] Working principle:

[0035] Pipe 2 moves from left to right. Water in cooling water tank 1 reaches pressurizing cylinder 9 through outlet pipe 13. Drive motor 11 drives spiral blade 12 to rotate through rotating shaft 10, pressurizing water in pressurizing cylinder 9 into return water pipe 14 so that it flows into water tank 8. Under the action of water hole 801 and overflow tank 802, it is sprayed onto pipe 2 to achieve water cooling.

[0036] There are multiple cooling water tanks 1. The water in the leftmost cooling water tank 1 comes into contact with the pipe 2 earliest, so its temperature is the highest. This forms warm water with a temperature lower than that of the pipe 2, which cools the pipe 2. As the pipe 2 is transported to the right, its temperature gradually decreases. The water in the corresponding cooling water tank 1 below also receives less heat from the pipe 2, and its temperature gradually decreases, thus achieving a stepped water cooling effect with a gradual decrease in water temperature.

[0037] During the water cooling process, a water film forms on the surface of pipe 2. Fan 4 blows air to the left for air cooling. Under the action of the water film, a better air cooling effect can be achieved. The air formed passes through the air duct 3, sleeve 19 and isolation cover 6 from right to left. At the same time, it also cools the water vapor in the upstream pipe and isolation cover 6. The two cooling modes of air cooling and water cooling work together to achieve a gentle step-by-step cooling effect on pipe 2.

[0038] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling device for PP pipe processing, characterized in that: It includes multiple cooling water tanks (1) arranged in a straight line and a blowing trough (3) set on the downstream side of the pipe (2) corresponding to the cooling water tank (1). A fan (4) is embedded in the blowing trough (3). Rollers (5) for supporting the pipe (2) are set on the top of the cooling water tank (1) and the bottom of the inner wall of the blowing trough (3). An isolation cover (6) is installed on the top of the cooling water tank (1). The pipe (2) passes through the isolation cover (6) and the blowing trough (3) laterally through the through holes (7) set on both sides of the isolation cover (6) and the blowing trough (3). The isolation cover (6) is fixed with a water trough (8) located above the pipe (2). The bottom of the water trough (8) is provided with a water hole (801), and the top of the side wall of the water trough (8) is provided with an overflow trough (802). Each cooling water tank (1) is provided with a pressure cylinder (9). Multiple pressure cylinders (9) are mounted together on the surface of a rotating shaft (10) through a sealed bearing located on the axis. The rotating shaft (10) is connected to the drive motor (11). The inside of the pressure cylinder (9) is provided with a spiral blade (12) fixed on the surface of the rotating shaft (10). The cooling water tank (1) is connected to the pressure cylinder (9) through a water outlet pipe (13). The pressure cylinder (9) is connected with a return water pipe (14) that penetrates the isolation cover (6) and extends to the top of the water trough (8).

2. A cooling device for PP pipe processing according to claim 1, characterized in that: There are at least three cooling water tanks (1), and each of the two adjacent cooling water tanks (1) has a heat insulation pad (15) fixed on its opposite side, and there is at least a 10 cm gap between the heat insulation pads (15) on the opposite sides of the two adjacent cooling water tanks (1).

3. A cooling device for PP pipe processing according to claim 1, characterized in that: The blower (4) is installed on the side of the blower channel (3) corresponding to the downstream of the pipe (2). There are multiple blowers (4) and they are equidistantly arranged around the pipe (2) in the circumference.

4. A cooling device for PP pipe processing according to claim 1, characterized in that: The bottom of the side wall of the blower (3) away from the blower (4) is provided with a drain hole (301).

5. A cooling device for PP pipe processing according to claim 1, characterized in that: The top of the air duct (3) and the isolation cover (6) are both hinged with a cover plate (16), and a handle (17) is fixed on the cover plate (16). A buckle (18) is also provided between the cover plate (16) and the corresponding air duct (3) and isolation cover (6).

6. A cooling device for PP pipe processing according to claim 1, characterized in that: The width of the water channel (8) is smaller than the diameter of the pipe (2).

7. A cooling device for PP pipe processing according to claim 1, characterized in that: The outlet pipe (13) is located at the bottom of one end of the pressurizing cylinder (9), and the return pipe (14) is located at the top of the end of the pressurizing cylinder (9) away from the outlet pipe (13), and the diameter of the outlet pipe (13) is larger than the diameter of the return pipe (14).

8. A cooling device for PP pipe processing according to claim 1, characterized in that: A sleeve (19) is installed on the surface of the pipe (2) at the corresponding through hole (7) between two adjacent isolation covers (6) and between the air duct (3) and the adjacent isolation cover (6).

9. A cooling device for PP pipe processing according to claim 8, characterized in that: The sleeve (19) is a tapered plastic pipe with a diameter at the downstream end of the corresponding pipe (2) being larger than the diameter at the upstream end of the corresponding pipe (2), and both ends of the sleeve (19) are fixed with rubber gaskets (20).

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