Quick cooling equipment for PVC (polyvinyl chloride) pipes

Abstract

The utility model discloses quick cooling equipment for PVC (polyvinyl chloride) pipes, which relates to the technical field of PVC pipe production and comprises a frame body, a liquid storage tank mounted at the left end of an inner cavity of the frame body, a liquid inlet pipe connected to the top of the right side of the liquid storage tank, a cooling tank mounted at the top of the frame body, and a backflow component arranged between the cooling tank and the liquid storage tank. A translation assembly is arranged at the top of an inner cavity of the cooling box, a spraying base is installed at the bottom of the translation assembly, spraying heads are connected to the bottom of the spraying base at equal intervals, and a water guide assembly is arranged between the spraying base and the liquid storage box. The spraying base, the electric push rod, the water guide assembly, the liquid storage tank, the driving assembly, the rotating shaft and the translation assembly are arranged in a matched mode, so that the pipe body can be driven to rotate, all parts of the surface of the pipe body can make contact with cooling liquid sprayed out of the spraying head, and dead corners of the pipe body are avoided as much as possible; and the cooling uniformity of the pipe body is effectively improved, and the cooling effect of equipment is improved.

Description

Technical Field

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

[0002] PVC material is mainly polyvinyl chloride, which is often used to make plastic pipe fittings. PVC pipes are widely used in the construction industry because of their light weight, corrosion resistance, beautiful appearance, no bad smell, and easy processing and construction. They are mainly used in the tap water supply system piping, drainage, exhaust and sewage pipes, underground drainage pipes, rainwater pipes, and wire installation supporting threading pipes, etc. in buildings. They have long service life, high corrosion resistance and compressive strength, save metal, improve living environment, are safe and convenient, and are favored by the pipeline engineering industry. In the production process of PVC pipes, the exported pipes need to be cooled.

[0003] The Chinese utility model patent publication number CN115922995A discloses a PVC pipe cooling and shaping device, including a box body, a water pumping assembly is provided on one side of the box body, and two connecting plates are fixedly connected to the other side of the box body. The bottom end of the upper connecting plate is fixedly connected to a forward and reverse motor, and the transmission shaft of the forward and reverse motor is fixedly connected to a connecting screw rod. The outer side of the connecting screw rod is threadedly connected to an adjustment plate through a screw nut. The beneficial effects of the present invention are: the forward and reverse motor is convenient for driving the connecting screw rod to rotate, and it is convenient to drive the pressure ring to move up and down according to the size of the pipe, which is convenient for The pipe is clamped and limited by the fixing ring, and the supporting effect of the two auxiliary rings facilitates more stable support of the pipe, which is convenient for subsequent spray cooling. The water is pumped out through several nozzles by the water pump, which is convenient for spray cooling of the pipe below. However, in the above equipment, the pipe is statically placed in the box, and the position of the coolant sprayed by the nozzle is fixed, so that the coolant is always sprayed at a fixed position of the pipe, and even the dead angle where the auxiliary ring contacts the pipe cannot be cooled by the coolant spray, resulting in uneven cooling of the pipe and poor cooling effect of the pipe. Summary of the invention

[0004] In order to improve the problem that in the above-mentioned equipment, the pipes are placed statically in a box, and the position of the coolant sprayed from the nozzle is fixed, so that the coolant is always sprayed at a fixed position of the pipe, resulting in uneven cooling of the pipe and poor cooling effect of the pipe, the utility model provides a PVC pipe rapid cooling device.

[0005] The utility model provides a PVC pipe rapid cooling device, which adopts the following technical solutions:

[0006] A PVC pipe rapid cooling device comprises a frame, a liquid storage tank is installed at the left end of the frame inner cavity, a liquid inlet pipe is connected to the top of the right side of the liquid storage tank, a cooling box is installed on the top of the frame, a reflux assembly is arranged between the cooling box and the liquid storage tank, a translation assembly is arranged at the top of the cooling box inner cavity, a spray seat is installed at the bottom of the translation assembly, spray nozzles are connected to the bottom of the spray seat at equal intervals, a water guide assembly is arranged between the spray seat and the liquid storage tank, an electric push rod is connected to the left end of the cooling box inner cavity through a bearing, a rotating shaft is connected to the right end of the cooling box inner cavity through a bearing, a clamping assembly is arranged on the electric push rod and the rotating shaft on one side close to the center of the cooling box, a pipe body is placed between two groups of the clamping assemblies, and a driving assembly is arranged between the rotating shaft and the translation assembly.

[0007] By adopting the above technical scheme, the pipe body is clamped and fixed by the clamping component, the rotating shaft and the translation component are driven to work by the driving component, the rotation of the rotating shaft drives the pipe body to rotate, and the translation component drives the nozzle seat to move left and right when working, thereby driving the nozzle to move left and right. At this time, the coolant in the inner cavity of the liquid storage tank is drawn into the inner cavity of the nozzle seat by the water guide component, so that the water sprayed by the nozzle can be fully sprinkled on the pipe body, so that all parts of the surface of the pipe body can contact with the coolant sprayed by the nozzle, and the appearance of dead corners of the pipe body is avoided as much as possible, thereby improving the cooling effect of the equipment.

[0008] Optionally, the water guide assembly includes a water pump, which is installed on the left side of the frame, a water pumping pipe is connected between the input end of the water pump and the liquid storage tank, and a water supply pipe is connected between the output end of the water pump and the spray seat.

[0009] By adopting the above technical solution, when the water pump is started, the coolant inside the liquid storage tank is extracted through the water suction pipe, and the coolant is transported to the inside of the spray seat through the water delivery pipe.

[0010] Optionally, the reflux component includes a water chiller, which is installed at the right end of the inner cavity of the frame, a reflux pipe is connected between the top of the water chiller and the bottom of the cooling box, a reflux pump is installed at the bottom of the frame, a second connecting pipe is connected between the input end of the reflux pump and the water chiller, and a first connecting pipe is connected between the output end of the reflux pump and the liquid storage tank.

[0011] By adopting the above technical solution, the reflux pipe guides the coolant in the inner cavity of the cooling box into the chiller for cooling. When the reflux pump is started, the liquid is extracted through the second connecting pipe and transported to the inner cavity of the liquid storage tank through the first connecting pipe, which is convenient for later reuse.

[0012] Optionally, a door body is hinged on the surface of the cooling box, and an observation window is installed on the surface of the liquid storage tank.

[0013] By adopting the above technical solution, the pipe body can be easily taken out through the door body, and the water volume in the inner cavity of the liquid storage tank can be easily observed through the observation window, so that water can be added in time.

[0014] Optionally, the translation assembly includes a one-way screw, which is connected to the top of the inner cavity of the cooling box through a bearing, the outer wall of the one-way screw is screwed with a first nut, the top of the first nut is connected to a slider, the inner top wall of the cooling box is provided with a sliding groove, and the slider is slidably connected to the sliding groove.

[0015] By adopting the above technical solution, when the one-way screw rotates, it drives the first nut to move left and right. When the first nut moves, it drives the slider to slide in the one-way screw, so that the first nut can be limited. When the first nut moves, it drives the nozzle below to move left and right, thereby expanding the spraying range of the nozzle.

[0016] Optionally, the driving assembly includes a shell, which is installed on the right side of the cooling box, and a forward and reverse motor is installed in the inner cavity of the shell, a driving shaft is installed at the power output end of the forward and reverse motor, a driving pulley is sleeved on the outer wall of the driving shaft, and the end of the inner cavity of the shell away from the driving shaft is connected to a driven shaft through a bearing, and a driven pulley is sleeved on the outer wall of the driven shaft. A connecting belt is provided for the external transmission of the driving pulley and the driven pulley, the left end of the driving pulley is fixedly connected to the right end of the rotating shaft, and the left end of the driven shaft is fixedly connected to the right end of the one-way screw.

[0017] By adopting the above technical solution, when the forward and reverse motors are working, the driving shaft drives the driving pulley to rotate, the driving pulley rotates through the connecting belt to drive the driven pulley to rotate, and the driven pulley rotates to drive the driven shaft to rotate, thereby driving the rotating shaft and the one-way screw to rotate.

[0018] Optionally, the clamping assembly includes two groups of mounting seats, which are respectively mounted on the electric push rod and the side of the rotating shaft close to the center of the cooling box, the inner cavities of the two groups of mounting seats are connected to a bidirectional screw rod through bearings, the bottoms of the two groups of mounting seats are equipped with micro motors for driving the bidirectional screw rod to rotate, both ends of the outer walls of the two groups of bidirectional screw rods are screwed with a second nut, the two groups of the second nut are connected to a connecting rod on the side close to the center of the cooling box, the inner sides of the two groups of mounting seats are provided with limiting holes matching the connecting rod, and the ends of the two groups of connecting rods facing away from the second nut are connected to a clamping plate.

[0019] By adopting the above technical solution, the micro motor drives the bidirectional screw to rotate when working, and the rotation of the bidirectional screw drives the second nut to move up and down. When the second nut moves, the connecting rod drives the clamping plate to move up and down, so that the distance between the two sets of clamping plates can be adjusted, which makes it convenient for the equipment to clamp and fix pipe bodies of different specifications.

[0020] Optionally, a rubber pad is connected to a side of the clamping plate away from the center of the mounting seat.

[0021] By adopting the above technical solution, the friction between the clamping plate and the inner side of the pipe body is increased by the rubber pad, so that the pipe body is clamped more tightly.

[0022] In summary, the present invention has at least one of the following beneficial effects:

[0023] (1) Through the coordinated arrangement of the nozzle seat, electric push rod, water guide assembly, liquid storage tank, drive assembly, rotating shaft and translation assembly, the pipe body can be driven to rotate, so that all parts of the surface of the pipe body can contact with the coolant sprayed by the nozzle, and the appearance of dead corners of the pipe body is avoided as much as possible, which effectively improves the uniformity of cooling of the pipe body and improves the cooling effect of the equipment.

[0024] (2) By means of the coordinated arrangement of the limiting holes, the connecting rod, the bidirectional screw rod, the clamping plate, the second nut, the mounting seat and the micro motor, it is convenient to adjust the distance between the two sets of clamping plates, so that the two sets of clamping plates can abut against the inner wall of the pipe body of different specifications, thereby clamping and fixing the pipe body, thereby improving the universality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0027] Figure 2 This is a front view structural schematic diagram of the utility model;

[0028] Figure 3 For the utility model Figure 1 Schematic diagram of the structure at point A in the middle.

[0029] In the figure: 1, spray seat; 2, cooling box; 3, electric push rod; 4, water guide assembly; 401, water pipe; 402, water pump; 403, water pump; 5, frame; 6, liquid storage tank; 7, liquid inlet pipe; 8, reflux assembly; 801, first connecting pipe; 802, reflux pump; 803, second connecting pipe; 804, reflux pipe; 805, chiller; 9, driving assembly; 901, driving pulley; 902, forward and reverse motor; 903, driving shaft; 904, housing; 905, connecting belt; 906 , driven shaft; 907, driven pulley; 10, rotating shaft; 11, pipe body; 12, nozzle; 13, translation assembly; 1301, first nut; 1302, slider; 1303, one-way screw; 1304, slide groove; 14, door body; 15, observation window; 16, clamping assembly; 1601, limiting hole; 1602, connecting rod; 1603, two-way screw; 1604, clamping plate; 1605, second nut; 1606, mounting seat; 1607, micro motor; 17, rubber pad. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 The utility model is described in further detail.

[0031] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 The utility model provides an embodiment: a PVC pipe rapid cooling device, comprising a frame 5, a liquid storage tank 6 is fixedly installed at the left end of the inner cavity of the frame 5, and a liquid inlet pipe 7 is fixedly connected to the top of the right side of the liquid storage tank 6, so as to facilitate adding cooling liquid into the liquid storage tank 6 through the liquid inlet pipe 7, a cooling box 2 is installed on the top of the frame 5, a reflux component 8 is arranged between the cooling box 2 and the liquid storage tank 6, and the reflux component 8 comprises a chiller 805, the chiller 805 is installed at the right end of the inner cavity of the frame 5, a reflux pipe 804 is fixedly connected between the top of the chiller 805 and the bottom of the cooling box 2, a reflux pump 802 is installed at the bottom of the frame 5, a second connecting pipe 803 is fixedly connected between the input end of the reflux pump 802 and the chiller 805, and a first connecting pipe 801 is fixedly connected between the output end of the reflux pump 802 and the liquid storage tank 6. The reflux pipe 804 guides the coolant in the inner cavity of the cooling box 2 into the chiller 805 for cooling. When the reflux pump 802 is started, the liquid is extracted through the second connecting pipe 803 and transported to the inner cavity of the liquid storage tank 6 through the first connecting pipe 801 for later reuse.

[0032] Please refer to the attached figure in the instruction manual Figure 1A translation assembly 13 is provided at the top of the inner cavity of the cooling box 2, a spray seat 1 is installed at the bottom of the translation assembly 13, and a plurality of spray heads 12 are connected to the bottom of the spray seat 1 at equal intervals. The translation assembly 13 includes a one-way screw rod 1303, which is rotatably connected to the top of the inner cavity of the cooling box 2 through a bearing, a first nut 1301 is screwed to the outer wall of the one-way screw rod 1303, a slider 1302 is fixedly connected to the top of the first nut 1301, and a slide groove 1304 is provided on the inner top wall of the cooling box 2, and the slider 1302 is slidably connected to the slide groove 1304. When the one-way screw rod 1303 rotates, it drives the first nut 1301 to move left and right. When the first nut 1301 moves, it drives the slider 1302 to slide in the one-way screw rod 1303, so that the first nut 1301 can be limited. When the first nut 1301 moves, it drives the nozzle 12 below to move left and right, thereby expanding the spraying range of the nozzle 12.

[0033] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 A water guide assembly 4 is provided between the spray seat 1 and the liquid storage tank 6. The water guide assembly 4 includes a water pump 402. The water pump 402 is installed on the left side of the frame 5. A water extraction pipe 403 is fixedly connected between the input end of the water pump 402 and the liquid storage tank 6. A water delivery pipe 401 is fixedly connected between the output end of the water pump 402 and the spray seat 1. When the water pump 402 is started, the coolant in the liquid storage tank 6 is extracted through the water extraction pipe 403, and the coolant is delivered to the inside of the spray seat 1 through the water delivery pipe 401.

[0034] Please refer to the attached figure in the instruction manual Figure 1 and Figure 3The left end of the inner cavity of the cooling box 2 is rotatably connected to the electric push rod 3 through a bearing, and the right end of the inner cavity of the cooling box 2 is rotatably connected to the rotating shaft 10 through a bearing. The electric push rod 3 and the rotating shaft 10 are both provided with a clamping assembly 16 on the side close to the center of the cooling box 2. A pipe body 11 is placed between the two sets of clamping assemblies 16. The clamping assembly 16 includes two sets of mounting seats 1606. The two sets of mounting seats 1606 are respectively mounted on the electric push rod 3 and the rotating shaft 10 on the side close to the center of the cooling box 2. The inner cavities of the two sets of mounting seats 1606 are both rotatably connected to the two-way Screw rod 1603, the bottom of the two sets of mounting seats 1606 are both installed with a micro motor 1607 for driving the bidirectional screw rod 1603 to rotate, the two ends of the outer wall of the two sets of bidirectional screw rod 1603 are screwed with a second nut 1605, the two sets of second nut 1605 are connected to a connecting rod 1602 on one side close to the center of the cooling box 2, the inner side of the two sets of mounting seats 1606 are provided with a limiting hole 1601 matching the connecting rod 1602, and the two sets of connecting rods 1602 are connected to a clamping plate 1604 on one end away from the second nut 1605. When the micro motor 1607 is working, it drives the bidirectional screw rod 1603 to rotate, and the bidirectional screw rod 1603 rotates to drive the second nut 1605 to move up and down. When the second nut 1605 moves, it drives the clamping plate 1604 to move up and down through the connecting rod 1602, so that the distance between the two groups of clamping plates 1604 can be adjusted, which is convenient for the equipment to clamp and fix the pipe body 11 of different specifications.

[0035] Please refer to the attached figure in the instruction manual Figure 1 and Figure 3 A rubber pad 17 is fixedly connected to one side of the clamping plate 1604 away from the center of the mounting seat 1606. The rubber pad 17 increases the friction between the clamping plate 1604 and the inner side of the pipe body 11, so that the pipe body 11 is clamped more firmly.

[0036] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 The surface of the cooling box 2 is hinged with a door body 14, and the surface of the liquid storage tank 6 is provided with an observation window 15. The door body 14 is convenient for taking the pipe body 11, and the observation window 15 is convenient for observing the water volume in the inner cavity of the liquid storage tank 6, so as to facilitate timely water addition.

[0037] Please refer to the attached figure in the instruction manual Figure 1A driving assembly 9 is arranged between the rotating shaft 10 and the translation assembly 13, and the driving assembly 9 includes a shell 904, which is installed on the right side of the cooling box 2. A forward and reverse motor 902 is installed in the inner cavity of the shell 904, and a driving shaft 903 is installed at the power output end of the forward and reverse motor 902. A driving pulley 901 is sleeved on the outer wall of the driving shaft 903, and a driven shaft 906 is connected to the outer wall of the driven shaft 906 through a bearing. A driven pulley 907 is sleeved on the outer wall of the driven shaft 906, and a connecting belt 905 is arranged for the external transmission of the driving pulley 901 and the driven pulley 907. The left end of the driving pulley 901 is fixedly connected to the right end of the rotating shaft 10, and the left end of the driven shaft 906 is fixedly connected to the right end of the one-way screw rod 1303. When the forward and reverse motor 902 is working, it drives the driving pulley 901 to rotate through the driving shaft 903. The driving pulley 901 rotates through the connecting belt 905 to drive the driven pulley 907 to rotate. The driven pulley 907 rotates and drives the driven shaft 906 to rotate, thereby driving the rotating shaft 10 and the one-way screw 1303 to rotate.

[0038] Working principle: When using the equipment, the staff first puts the right end of the pipe body 11 on the outside of the right end clamping plate 1604 and moves it to the right for a distance, so that the pipe body 11 is in a horizontal state, and then controls the electric push rod 3 to extend. The electric push rod 3 extends to drive the left end clamping plate 1604 to move and make the clamping plate 1604 extend into the interior of the pipe body 11. At this time, the micro motor 1607 is turned on. When the micro motor 1607 works, it drives the bidirectional screw rod 1603 to rotate. The bidirectional screw rod 1603 rotates to drive the second nut 1605 to move up and down. When the second nut 1605 moves, it drives the clamping plate 1604 to move up and down through the connecting rod 1602, so that the inside of the pipe body 11 can be supported by the clamping plate 1604, and then the pipe body 11 is clamped and fixed.

[0039] Then start the water pump 402, the water pump 402 extracts the coolant in the liquid storage tank 6 through the water pumping pipe 403 and transports it to the inside of the spray seat 1 through the water pipe 401, and finally the coolant is sprayed downward onto the pipe body 11 through the nozzle 12, and at the same time start the forward and reverse motor 902, when the forward and reverse motor 902 is working, it drives the driving pulley 901 to rotate through the driving shaft 903, the driving pulley 901 rotates through the connecting belt 905 to drive the driven pulley 907 to rotate, the driven pulley 907 rotates and drives the driven shaft 906 to rotate, and then can drive the rotating shaft 10 and the one-way screw 1303 to rotate, the rotating shaft 10 rotates to drive the pipe body 1 1 rotates, so that the pipe body 11 can be evenly cooled. When the one-way screw rod 1303 rotates, it drives the first nut 1301 to move left and right. When the first nut 1301 moves, it drives the slider 1302 to slide in the slide groove 1304, so that the first nut 1301 can be limited. When the first nut 1301 moves left and right, it drives the spray seat 1 to move left and right, thereby driving the spray head 12 to move, so that the water sprayed by the spray head 12 can be fully sprinkled on the pipe body 11, so that all parts of the surface of the pipe body 11 can contact with the coolant sprayed by the spray head 12, and the appearance of dead corners of the pipe body 11 is avoided as much as possible, thereby improving the cooling effect of the equipment.

[0040] The water in the cooling box 2 is transported to the chiller 805 through the return pipe 804, and after being cooled by the chiller 805, the return pump 802 is started. The return pump 802 extracts the cooled liquid through the second connecting pipe 803 and transports it to the liquid storage tank 6 again through the first connecting pipe 801 for later reuse.

[0041] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A PVC pipe rapid cooling device, comprising a frame (5), characterized in that: A liquid storage tank (6) is installed at the left end of the inner cavity of the frame (5), and a liquid inlet pipe (7) is connected to the top of the right side of the liquid storage tank (6). A cooling box (2) is installed on the top of the frame (5), and a reflux component (8) is arranged between the cooling box (2) and the liquid storage tank (6). A translation component (13) is arranged on the top of the inner cavity of the cooling box (2), and a spray seat (1) is installed at the bottom of the translation component (13). Spray heads (12) are connected to the bottom of the spray seat (1) at equal intervals. The spray seat (1) is connected to the liquid storage tank (6) at the same intervals. A water guide assembly (4) is arranged between the liquid tanks (6); the left end of the inner cavity of the cooling box (2) is connected to an electric push rod (3) via a bearing; the right end of the inner cavity of the cooling box (2) is connected to a rotating shaft (10) via a bearing; a clamping assembly (16) is arranged on one side of the electric push rod (3) and the rotating shaft (10) close to the center of the cooling box (2); a pipe body (11) is placed between the two groups of the clamping assemblies (16); and a driving assembly (9) is arranged between the rotating shaft (10) and the translation assembly (13).

2. A PVC pipe rapid cooling device according to claim 1, characterized in that: The water guide assembly (4) comprises a water pump (402), the water pump (402) being installed on the left side of the frame (5), a water pumping pipe (403) being connected between the input end of the water pump (402) and the liquid storage tank (6), and a water delivery pipe (401) being connected between the output end of the water pump (402) and the spray seat (1).

3. A PVC pipe rapid cooling device according to claim 1, characterized in that: The reflux assembly (8) comprises a water chiller (805), the water chiller (805) being installed at the right end of the inner cavity of the frame (5), a reflux pipe (804) being connected between the top of the water chiller (805) and the bottom of the cooling box (2), a reflux pump (802) being installed at the bottom of the frame (5), a second connecting pipe (803) being connected between the input end of the reflux pump (802) and the water chiller (805), and a first connecting pipe (801) being connected between the output end of the reflux pump (802) and the liquid storage tank (6).

4. A PVC pipe rapid cooling device according to claim 1, characterized in that: A door body (14) is hingedly connected to the surface of the cooling box (2), and an observation window (15) is installed on the surface of the liquid storage box (6).

5. The PVC pipe rapid cooling device according to claim 1, characterized in that: The translation assembly (13) comprises a one-way screw (1303), wherein the one-way screw (1303) is connected to the top of the inner cavity of the cooling box (2) via a bearing, a first nut (1301) is screwed to the outer wall of the one-way screw (1303), a slider (1302) is connected to the top of the first nut (1301), a slide groove (1304) is provided on the inner top wall of the cooling box (2), and the slider (1302) is slidably connected to the slide groove (1304).

6. A PVC pipe rapid cooling device according to claim 5, characterized in that: The driving assembly (9) comprises a shell (904), wherein the shell (904) is mounted on the right side of the cooling box (2), a forward and reverse motor (902) is mounted in the inner cavity of the shell (904), a driving shaft (903) is mounted at the power output end of the forward and reverse motor (902), a driving pulley (901) is sleeved on the outer wall of the driving shaft (903), a driven shaft (906) is connected to the outer wall of the driven shaft (906) via a bearing, a driven pulley (907) is sleeved on the outer wall of the driven shaft (906), a connecting belt (905) is provided for external transmission between the driving pulley (901) and the driven pulley (907), the left end of the driving pulley (901) is fixedly connected to the right end of the rotating shaft (10), and the left end of the driven shaft (906) is fixedly connected to the right end of the one-way screw rod (1303).

7. A PVC pipe rapid cooling device according to claim 1, characterized in that: The clamping assembly (16) comprises two groups of mounting seats (1606), the two groups of mounting seats (1606) being respectively mounted on one side of the electric push rod (3) and the rotating shaft (10) close to the center of the cooling box (2), the inner cavities of the two groups of mounting seats (1606) being connected to a bidirectional screw rod (1603) via a bearing, and the bottoms of the two groups of mounting seats (1606) being mounted with a micro motor (1607) for driving the bidirectional screw rod (1603) to rotate. Both ends of the outer wall of the bidirectional screw rod (1603) are screwed with a second nut (1605), and the two groups of the second nut (1605) are connected to a connecting rod (1602) on one side close to the center of the cooling box (2). The inner sides of the two groups of mounting seats (1606) are provided with a limiting hole (1601) matching the connecting rod (1602), and the ends of the two groups of connecting rods (1602) facing away from the second nut (1605) are connected to a clamping plate (1604).

8. A PVC pipe rapid cooling device according to claim 7, characterized in that: A rubber pad (17) is connected to a side of the clamping plate (1604) away from the center of the mounting seat (1606).

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