Rapid air cooling device for corrugated pipe production

Abstract

The utility model belongs to the technical field of air cooling equipment, and particularly relates to a quick air cooling device for corrugated pipe production, which comprises a fan and a cold air pipe, at least four spiral air ducts are arranged in the cold air pipe at intervals, the spiral air ducts spirally surround the central axis of the cold air pipe, and air outlets of the spiral air ducts penetrate through the end face of the cold air pipe. A plurality of strip-shaped holes are formed in the inner walls of the spiral air ducts at intervals in the spiral direction, air inlets of the spiral air ducts communicate with alloy pipes staggered with ports of the cold air pipes, the ends, away from the spiral air ducts, of the alloy pipes communicate with the output end of the draught fan, and capillary layers are bonded to the sides, away from the strip-shaped holes, of the spiral air ducts; steel joint forks are fixed to the positions, right facing air outlets of the spiral air ducts, of the end faces of the cold air pipes, one ends of the steel joint forks are in a forked shape, and first guide wheels are rotationally installed at the forked positions. Four strands of cold air are isolated from one another to respectively cover the outer surface of the corrugated pipe, air distribution is uniform, and synchronous and rapid heat dissipation of the outer ring surface of the corrugated pipe is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of air cooling equipment, and in particular relates to a rapid air cooling device for producing corrugated pipes. Background Art

[0002] After extrusion, plastic corrugated pipe production lines primarily utilize air or water cooling technology, using high-speed fans and a cooling water circulation system to rapidly cool and solidify the corrugated pipe. Air cooling is more efficient than traditional water cooling, significantly improving production efficiency and output.

[0003] The advantage of air cooling technology is that it can quickly reduce the surface temperature of the bellows while avoiding quality issues that may arise from direct contact between water and the bellows. This is especially true when the two half-moon dies are just separated from the bellows. The cold air contacts the bellows before the cooling water, giving the bellows a certain degree of hardness during its initial formation.

[0004] After the corrugated tube is extruded, it is generally surrounded by two or three air outlets on the outside, and air is discharged along the fan-shaped air guide plate to dissipate heat. Each air outlet blows air toward an area and spreads to both sides. Two winds will converge at the edge of the area and generally will not cancel each other out, causing the cold air to be biased towards one area. The air distribution in the area is uneven, which is not conducive to the synchronous and rapid heat dissipation of the outer ring surface of the corrugated tube. Utility Model Content

[0005] The utility model aims to provide a rapid air cooling device for bellows production, which isolates four streams of cold air from each other and covers the outer surface of the bellows respectively, distributes the air evenly, and facilitates the synchronous rapid heat dissipation of the outer ring surface of the bellows.

[0006] The technical solutions adopted by this utility model are as follows:

[0007] A rapid air cooling device for producing corrugated pipes, comprising a fan and a cold air pipe, wherein at least four spiral air ducts are spaced apart inside the cold air pipe, the spiral air ducts are spirally arranged around the central axis of the cold air pipe, the air outlets of the spiral air ducts are all passed through the end face of the cold air pipe, the inner wall of the spiral air ducts are spaced apart along the spiral direction and provided with a plurality of strip-shaped holes, the air inlets of the spiral air ducts are all connected to alloy pipes staggered from the ends of the cold air pipes, and the ends of the alloy pipes away from the spiral air ducts are all connected to the fan outlet At the outlet end, a capillary layer is bonded to one side of the spiral air duct away from the strip holes, a cold air duct is horizontally mounted, and the corrugated pipe passes through the inside of the cold air duct. Four alloy pipes support four fans, which can be started to blow cold air along the alloy pipe toward the corresponding spiral air duct, surround along the spiral path and spray toward the corrugated pipe from each strip hole. A single stream of cold air can cover the outer surface of the corrugated pipe with a large air volume. Since the spiral air ducts are separated from each other, the four streams of cold air are isolated from each other and the air distribution is even, which is convenient for the synchronous and rapid heat dissipation of the outer ring surface of the corrugated pipe.

[0008] As a preferred solution, steel joint forks are fixed at the positions where the end faces of the cold air ducts are directly opposite to the air outlets of the spiral air ducts. One end of each steel joint fork is bifurcated, and a first guiding wheel is rotatably installed at each bifurcated part. When the corrugated pipe passes through the cold air duct, each first guiding wheel is supported by the steel joint fork, and the corrugated pipe is surrounded in a ring shape for support, which is convenient for the corrugated pipe to be centered among the four cold air flows, so that the outer surface of the corrugated pipe is evenly affected by the wind, which is beneficial to the rapid heat dissipation of each part.

[0009] As a preferred solution, second guiding wheels are rotatably installed at the lower edges of the cold air ducts far from the first guiding wheels. The height of the upper surface of the second guiding wheels is greater than the height of the lower edges of the cold air ducts. The corrugated pipe is supported from below by the second guiding wheels, which is convenient for the corrugated pipe to maintain its own height and can be suspended inside the cold air duct.

[0010] As a preferred solution, a gantry beam is fixed outside the cold air duct. The middle of the gantry beam is fixedly connected to the upper surface of the cold air duct in a fan-shaped ring. Two gantry beams are used to suspend the cold air duct, which is convenient for both ends of the cold air duct to remain horizontal. Especially under the swirling action of the four cold air flows, it can still remain stationary.

[0011] As a preferred solution, dampers are fixed on both sides of the cold air duct, and the lower ends of the dampers are grounded. Once the cold air duct is impacted and may shake, the dampers on both sides are used for buffering to reduce the shaking amplitude of the cold air duct, which is convenient for maintaining a safe distance between the cold air duct and the corrugated pipe.

[0012] As a preferred solution, a wind collecting cover is fixed at a position on the outer side of the cold air duct far from the fan. The opening of the wind collecting cover covers the steel joint forks and the first guiding wheels. After the four cold air flows leave the intersection of the cold air duct and the corrugated pipe, they may disperse outward. The wind collecting cover is used to cover the air outlet of the spiral air duct like a wide mouth, which can collect the exhaust gas.

[0013] As a preferred solution, an exhaust pipe is connected and fixed above the wind collecting cover.

[0014] The technical effects achieved by the present utility model are as follows:

[0015] The cold air duct of the present utility model is horizontally installed, and the corrugated pipe passes through the inside of the cold air duct in a suspended manner. Four alloy pipe supports are for four fans. The fans can be started to blow cold air along the alloy pipes towards the corresponding spiral air ducts, and the cold air flows around along the spiral path and are sprayed onto the corrugated pipe from each strip-shaped hole. A single cold air flow can cover the outer surface of the corrugated pipe, and the air volume is large. Since the spiral air ducts are separated from each other, the four cold air flows are separated from each other, and the air distribution is uniform, which is convenient for the synchronous and rapid heat dissipation of the outer ring surface of the corrugated pipe.

[0016] When the corrugated pipe of the present utility model passes through the cold air duct, the steel joint fork is used to support each first guide wheel, surrounding the corrugated pipe in a ring for support, which facilitates the corrugated pipe to be centered among the four cold air streams, making the outer surface of the corrugated pipe receive uniform wind, and is conducive to the rapid heat dissipation of each part. Description of the Drawings

[0017] Figure 1 is the front view of a rapid air-cooling device for corrugated pipe production of the present utility model;

[0018] Figure 2 is the right view of a rapid air-cooling device for corrugated pipe production of the present utility model;

[0019] Figure 3 is the left view of a rapid air-cooling device for corrugated pipe production of the present utility model;

[0020] Figure 4 is the front view of the spiral air duct of the present utility model.

[0021] In the drawings, the list of components represented by each reference numeral is as follows:

[0022] 1, fan; 2, cold air duct; 3, spiral air duct; 4, strip hole; 5, alloy pipe; 6, capillary layer; 7, steel joint fork; 8, first guide wheel; 9, second guide wheel; 10, gantry beam; 11, damper; 12, air collecting hood; 13, tail gas pipe. Detailed Embodiments

[0023] In order to make the purpose and advantages of the present utility model clearer, the present utility model will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present utility model, and does not strictly limit the specific scope of protection requested by the present utility model.

[0024] As Figures 1-4As shown, a rapid air cooling device for corrugated pipe production includes a fan 1. In this embodiment, the number of fans 1 is four, and the device also includes a cold air pipe 2. At least four spiral air ducts 3 are spaced apart inside the cold air pipe 2. The number of spiral air ducts 3 can be three to eight. First, the number is set to three to reduce power consumption. Second, the number is set to eight, so that the area of each spiral air duct 3 is smaller and the cold air is more concentrated. In this embodiment, four spiral air ducts 3 are preferably provided. The spiral air ducts 3 are all spirally wrapped around the central axis of the cold air pipe 2. The air outlets of the spiral air ducts 3 all pass through the end face of the cold air pipe 2. The inner wall of the spiral air duct 3 is spaced apart along the spiral direction and provided with a plurality of strip holes 4. The number of strip holes 4 can be ten to twenty. First, the number is set to ten to facilitate the cold air duct 2 to maintain good structural strength. Second, the number is set to twenty to increase the cold air distribution area as much as possible without wasting part of the structural strength. In this embodiment, twelve are preferred. The air inlets of the spiral air duct 3 are connected to the alloy tube 5 staggered from the port of the cold air duct 2. The end of the alloy tube 5 away from the spiral air duct 3 is connected to the output end of the fan 1. The side of the spiral air duct 3 away from the strip holes 4 is bonded with a capillary layer 6. The capillary layer 6 adopts capillary water-absorbing material, especially the capillary layer 6 partially extends out of the air outlet of the spiral air duct 3, which can evaporate moisture into the air.

[0025] The corrugated pipe extrusion production line uses two belts to drive two sets of half-moon shaped molds to rotate horizontally. The two sets of half-moon shaped molds are partially interlocked to form a tubular shape for injection molding. The corrugated pipe is then separated from the downstream of the assembly line and supported from the end of the corrugated pipe, pulling it outward at a uniform speed.

[0026] At the position where the corrugated pipe is suspended downstream of the extrusion production line, a cold air pipe 2 is horizontally installed, and the corrugated pipe passes through the inside of the cold air pipe 2. Four alloy pipes 5 support four fans 1. The fans 1 can be started to blow cold air along the alloy pipe 5 toward the corresponding spiral air duct 3, and the cold air surrounds along the spiral path and is sprayed toward the corrugated pipe from each strip hole 4. A single stream of cold air can cover the outer surface of the corrugated pipe with a large air volume. Since the spiral air ducts 3 are separated from each other, the four streams of cold air are isolated from each other and the air distribution is even, which is convenient for the synchronous and rapid heat dissipation of the outer ring surface of the corrugated pipe.

[0027] After the corrugated tube leaves the cold air duct 2, it can pass through the water cooling box horizontally. The part inside the water cooling box is continuously sprayed with cold water for secondary cooling, which facilitates the rapid molding of the corrugated tube after extrusion.

[0028] like Figure 4 As shown, the spacing distance of the spiral air duct 3 is less than 1 cm, and in this embodiment it is preferably 0.8 cm, taking into account good structural strength and not occupying too much area, and can separate each cold air, and the alloy tube 5 blows cold air along the spiral line of the spiral air duct 3 to reduce eddy current as much as possible.

[0029] Refer to the attached Figure 2 and Figure 3, at the positions where the end faces of the cold air ducts 2 face the air outlets of the spiral air ducts 3, steel joint forks 7 are fixedly installed. One end of each steel joint fork 7 is bifurcated, and a first guiding wheel 8 is rotatably installed at the bifurcated part. When the corrugated pipe passes through the cold air duct 2, the steel joint forks 7 support each first guiding wheel 8 to surround the corrugated pipe in a ring shape for support, facilitating the corrugated pipe to be centered among the four cold air streams, making the outer surface of the corrugated pipe receive uniform wind, and being beneficial to the rapid heat dissipation of each part.

[0030] Refer to the appendix Figure 2 and Figure 3 , second guiding wheels 9 are rotatably installed at the lower edges of the cold air ducts 2 far from the first guiding wheels 8. The surfaces of the second guiding wheels 9 and the first guiding wheels 8 are smooth and high-temperature resistant, not easily adhering to the corrugated pipe. The height of the upper surface of the second guiding wheel 9 is greater than the height of the lower edge of the cold air duct 2. The second guiding wheels 9 support the corrugated pipe from below, facilitating the corrugated pipe to maintain its own height and be able to be suspended inside the cold air duct 2.

[0031] Refer to the appendix Figure 1 and Figure 2 , a gantry beam 10 is fixedly installed outside the cold air duct 2. The middle of the gantry beam 10 is fixedly connected to the upper surface of the cold air duct 2 in a fan-shaped ring. Two gantry beams 10 are used to suspend the cold air duct 2, facilitating the two ends of the cold air duct 2 to remain horizontal. Especially under the swirling action of the four cold air streams, it can still remain stationary.

[0032] Refer to the appendix Figure 1 and Figure 2 , dampers 11 are fixedly installed on both sides of the cold air duct 2. The lower ends of the dampers 11 are grounded. Once the cold air duct 2 is impacted and may shake, the dampers 11 on both sides are used for buffering to reduce the shaking amplitude of the cold air duct 2, facilitating the retention of a safe distance between the cold air duct 2 and the corrugated pipe.

[0033] Refer to the appendix Figure 1 and Figure 2 , a wind collecting hood 12 is fixedly installed outside the cold air duct 2 at a position far from the fan 1. The opening of the wind collecting hood 12 covers the steel joint forks 7 and the first guiding wheels 8. After the four cold air streams leave the intersection of the cold air duct 2 and the corrugated pipe, they may disperse outward. The wind collecting hood 12 is used to widely cover the air outlet of the spiral air duct 3 to concentrate the exhaust gas.

[0034] Refer to the appendix Figure 1 and Figure 2 , an exhaust pipe 13 is connected and fixed above the wind collecting hood 12. The end of the exhaust pipe 13 is connected to the air exhaust system of the air conditioner to create a negative pressure condition inside the wind collecting hood 12 to suck the exhaust gas. Especially, the outer edge of the wind collecting hood 12 can be bent inward to guide the exhaust gas to form a circulating flow inside and flow into the exhaust pipe 13 as much as possible.

[0035] The working principle of the utility model is as follows: during operation, the cold air duct 2 is horizontally installed, and the corrugated pipe passes through the inside of the cold air duct 2 in the air. Four alloy pipes 5 support four fans 1. The fans 1 can be started to blow cold air along the alloy pipes 5 towards the corresponding spiral air ducts 3, surround along the spiral path and spray towards the corrugated pipe from each strip hole 4. A single stream of cold air can cover the outer surface of the corrugated pipe, and the air volume is large. Since the spiral air ducts 3 are separated from each other, the four streams of cold air are separated from each other, and the air distribution is uniform, which is convenient for the synchronous and rapid heat dissipation of the outer ring surface of the corrugated pipe.

[0036] The above are only the preferred embodiments of the utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model are implemented by conventional means in this field without special instructions and limitations.

Claims

1. A rapid air cooling device for corrugated pipe production, comprising a fan (1), characterized in that: It further includes a cold air duct (2). At least four spiral air ducts (3) are spaced apart inside the cold air duct (2). The spiral air ducts (3) are all spirally wound around the central axis of the cold air duct (2). The air outlets of the spiral air ducts (3) all penetrate through the end face of the cold air duct (2). A plurality of strip-shaped holes (4) are spaced apart along the spiral direction on the inner walls of the spiral air ducts (3). The air inlets of the spiral air ducts (3) are all communicated with alloy pipes (5) that are offset from the ports of the cold air duct (2). One ends of the alloy pipes (5) far from the spiral air ducts (3) are all communicated with the output ends of the fans (1). Capillary layers (6) are bonded to the sides of the spiral air ducts (3) far from the strip-shaped holes (4).

2. The rapid air cooling device for corrugated pipe production according to claim 1, characterized in that: Steel joint forks (7) are fixed at the positions on the end face of the cold air duct (2) facing the air outlets of the spiral air ducts (3). One ends of the steel joint forks (7) are all bifurcated, and first guide wheels (8) are rotatably installed at the bifurcated parts.

3. The rapid air cooling device for corrugated pipe production according to claim 2, characterized in that: Second guide wheels (9) are rotatably installed at the lower edges of the cold air duct (2) far from the first guide wheels (8). The height of the upper surface of the second guide wheels (9) is greater than the height of the lower edge of the cold air duct (2).

4. A rapid air cooling device for corrugated pipe production according to claim 1, characterized in that: A gantry beam (10) is fixed outside the cold air duct (2). The middle of the gantry beam (10) is fixedly connected to the upper surface of the cold air duct (2) in a fan-shaped ring.

5. The rapid air-cooling device for corrugated pipe production according to claim 1, characterized in that: Dampers (11) are fixed on both sides of the cold air duct (2). The lower ends of the dampers (11) are all grounded.

6. The rapid air-cooling device for bellows production according to claim 2, wherein: An air collecting hood (12) is fixed at a position on the outside of the cold air duct (2) far from the fan (1). The opening of the air collecting hood (12) covers the steel joint forks (7) and the first guide wheels (8).

7. The rapid air cooling device for corrugated pipe production according to claim 6, characterized in that: An exhaust pipe (13) is fixedly connected and communicated above the air collecting hood (12).

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