A cooling device for plastic pipe processing and cooling method thereof

Abstract

The present invention belongs to the technical field of plastic pipe processing, and discloses a cooling device for plastic pipe processing, comprising a cooling mechanism, wherein the cooling mechanism comprises a water pump, the top of the water pump is fixedly connected with a water outlet pipe, and the top of the water outlet pipe is fixedly connected with a shunt pipe; a cooling method for plastic pipe processing, the cooling method is as follows: S1, first fix the device at the discharge port of a plastic pipe production device; the present invention facilitates uniform cooling of the plastic pipe body by arranging the coordination of structures such as cooling pipes and water spray holes, starts the water pump, pressurizes the cooling water through the water pump so that it enters the inside of the shunt pipe through the water outlet pipe, and moves to the inside of two cooling pipes respectively through the shunt of a shunt plate, so that the coolant is sprayed out through a plurality of water spray holes evenly distributed on the cooling pipe under the action of water pressure and gravity, and the surface of the plastic pipe body located between the two cooling pipes is evenly cooled.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic pipe processing, in particular to a cooling device for plastic pipe processing and a cooling method thereof. Background Art

[0002] Plastic pipes are generally made of synthetic resin, that is, polyester as raw material, with the addition of stabilizers, lubricants, plasticizers, etc., and are made by extrusion in a pipe making machine. Due to its light weight and convenient construction, it has been increasingly widely used in construction projects. In the manufacturing process of plastic pipes, the extruded pipes must be cooled and shaped to ensure their dimensional stability and excellent physical properties. This is crucial to the strength, heat resistance and appearance quality of plastic pipes, and directly affects the service life and application range of the pipes.

[0003] Most of the existing cooling devices for plastic pipe processing achieve cooling by directly blowing the plastic pipe with a fan, which easily causes deformation and uneven cooling on the surface of the softer plastic pipe, thereby causing deformation, warping or cracking on the surface due to uneven cooling, and the cooling effect is poor. Therefore, a cooling device for plastic pipe processing is proposed, which has the effects of uniform cooling, improved cooling effect and improved quality of plastic pipes. Summary of the invention

[0004] In order to solve the problem that the above-mentioned background technology proposes to cool the plastic pipe by directly blowing a fan on the plastic pipe, which easily causes the surface of the softer plastic pipe to deform and cool unevenly, thereby causing the surface to deform, warp or crack due to uneven cooling, and the cooling effect is poor, the present invention provides a cooling device for plastic pipe processing and a cooling method thereof.

[0005] To achieve the above object, the present invention provides the following technical solution: A cooling device for plastic pipe processing, comprising a cooling mechanism, wherein a main body mechanism is provided on the cooling mechanism, and a heat dissipation mechanism is provided inside the main body mechanism;

[0006] The cooling mechanism includes a water pump, a water outlet pipe is fixedly connected to the top of the water pump, a diversion pipe is fixedly connected to the top of the water outlet pipe, a diversion plate is fixedly connected to the inside of the diversion pipe, two cooling pipes are fixedly connected to the diversion pipe, a number of water spray holes are evenly opened on the two cooling pipes, and a water outlet is opened at one end of the cooling pipe away from the diversion pipe.

[0007] Preferably, several of the water spray holes are respectively located on the side where the two cooling pipes are close to each other, the shape of the diverter plate is "V"-shaped, the shape of the cooling pipe is "S"-shaped, the opening of the water outlet is toward the side of the cooling pipe away from the diverter pipe, the size of the water outlet is larger than the size of the cooling pipe, and the two cooling pipes are combined with each other to form a circular area between the two cooling pipes.

[0008] Preferably, the main body mechanism includes a main body shell, a plurality of heat dissipation grooves are evenly arranged on the top of the main body shell, a plastic pipe body is slidably connected to the inside of the main body shell, a baffle is fixedly connected to the inner wall of the main body shell, a slide groove is arranged on the inner wall of the main body shell, a water delivery groove is arranged on the inner wall of the main body shell, and a rotating frame is fixedly connected to the inside of the main body shell.

[0009] Preferably, the baffle is located on a side of the main shell close to the slide slot, the slide slot is located above the baffle, the plastic tube body is located below the baffle, and the plastic tube body penetrates the inner wall of the main shell and extends to both sides of the main shell.

[0010] Preferably, the water delivery trough is located below the plastic pipe body, the outer side of the water delivery trough is in the form of an inclined groove, and the rotating frame is located on a side of the main body shell away from the baffle.

[0011] Preferably, the water pump is fixedly connected to the inner wall of the main body shell, the water pump is located on the side of the water trough away from the baffle, the cross-section of the water trough close to the water pump is larger than the cross-section of the water trough away from the water pump, the plastic pipe body is located between the two cooling pipes, the size of the plastic pipe body is smaller than the circular area formed between the two cooling pipes, the baffle is located on the side of the water outlet away from the water pump, the rotating frame is located on the side of the cooling pipe away from the baffle, and the diverter pipe is located below the plastic pipe body.

[0012] Preferably, the heat dissipation mechanism includes a motor, the bottom of the motor is rotatably connected to a half-tooth bevel gear, the side of the half-tooth bevel gear is meshed with a transmission bevel gear, there are two transmission bevel gears, a connecting shaft is fixedly connected between the two transmission bevel gears, a connecting plate is fixedly connected to the transmission bevel gear, a fan is arranged on the side of the connecting plate away from the transmission bevel gear, and a plurality of air outlet holes are evenly arranged at the bottom of the fan.

[0013] Preferably, the half-bevel gear is located above the connecting shaft, and the half-bevel gear is located between two transmission bevel gears.

[0014] Preferably, the motor is fixedly connected to the top of the main shell, the half-tooth bevel gear passes through the top of the main shell and extends to the interior of the main shell, the transmission bevel gear is rotatably connected to the inner wall of the main shell, the fan is located above the plastic tube body, one end of the fan away from the transmission bevel gear is slidably connected to the slide groove, the connecting plate is rotatably connected to the rotating frame, and the fan is rotatably connected with the rotating frame as the center.

[0015] A cooling method for plastic pipe processing, the cooling method is as follows:

[0016] S1. First, fix the device at the discharge port of the plastic pipe production device, and make the discharge port located on the side of the main shell close to the motor, then feed the mixed plastic raw material into the hopper of the extruder, heat the raw material to a molten state through the rotation of the screw, and then extrude it through the mold to form a continuous tubular object, and enter the inside of the main shell from the side of the main shell close to the motor. At the same time, the staff needs to start the water pump, pressurize the cooling water through the water pump so that it enters the inside of the diversion pipe through the water outlet pipe, and moves to the inside of the two cooling pipes respectively through the diversion of the diversion plate, so that the coolant is sprayed out through a number of water spray holes evenly distributed on the cooling pipe under the action of water pressure and gravity, and the surface of the plastic pipe body located between the two cooling pipes is cooled. At the same time, when the cooling water flows through the cooling pipe layer by layer, it can drive the heat on part of the plastic pipe body;

[0017] S2. Start the motor at the same time to rotate the half-bevel gear. The rotation of the half-bevel gear will rotate the transmission bevel gear meshing with it through the teeth, thereby driving the fan to rotate on the rotating frame through the connecting plate, and start the fan to eject the pressurized air through the air outlet, accelerate the air flow inside the main shell, cool the plastic pipe body and the cooling pipe under the fan, thereby indirectly reducing the temperature of the cooling water inside the cooling pipe, and when the half-bevel gear rotates, the teeth on the half-bevel gear are disengaged from the transmission bevel gear and meshed with the second transmission bevel gear, thereby driving the second transmission bevel gear to rotate in the opposite direction through rotation, thereby causing the fan to rotate in the opposite direction on the rotating frame through transmission, so that the fan can reciprocate inside the main shell;

[0018] S3. The cooling water that is not sprayed out from the water spray hole will be sprayed out through the water outlet on the cooling pipe, and through the inclined surface on the baffle, the sprayed cooling water will be inclined downward to wash the surface of the plastic pipe body that is about to be moved out of the main shell, and the plastic pipe body will be cooled in the last step. Finally, the cooling water will flow along the water trough to the side of the water pump close to the baffle, and then be discharged from the water outlet pipe under pressure by the water pump. Repeat the above steps to perform circulating cooling.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention facilitates uniform cooling of the plastic pipe body by arranging the cooperation of the cooling pipe and the water spray hole and other structures, and starts the water pump to pressurize the cooling water through the water pump so that the cooling water enters the inside of the diverter pipe through the water outlet pipe, and moves to the inside of the two cooling pipes respectively through the diversion of the diverter plate, so that the coolant is sprayed through a plurality of water spray holes evenly distributed on the cooling pipe under the action of water pressure and gravity, and the surface of the plastic pipe body located between the two cooling pipes is evenly cooled, thereby helping to form a smooth and uniform surface. At the same time, when the cooling water flows through the cooling pipe layer by layer, the heat on part of the plastic pipe body can be evenly driven, so as to avoid deformation, warping or cracking of the surface of the plastic pipe body caused by uneven cooling, and improve the structural stability and quality of the finished product;

[0021] The present invention facilitates multi-stage cooling of the plastic pipe body by arranging the cooperation of structures such as the water outlet and the baffle. The cooling water that is not sprayed out from the water spray hole is sprayed out through the water outlet on the cooling pipe, and the sprayed cooling water is sprayed downward obliquely to wash the surface of the plastic pipe body that is about to be moved out of the main body shell through the inclined surface on the baffle. The plastic pipe body that has been hardened after cooling in the above steps is cooled in the last step, so as to further improve the cooling effect and at the same time will not affect the hardened plastic pipe body.

[0022] The present invention solves the problem that the surface of the relatively soft plastic pipe body is deformed and cooled unevenly due to direct blowing of the fan, by arranging the coordination of structures such as the half-bevel gear and the transmission bevel gear. The motor is started to rotate the half-bevel gear, and the rotation of the half-bevel gear causes the transmission bevel gear meshing with it to rotate through the teeth, thereby driving the fan to rotate on the rotating frame through the connecting plate, and starting the fan to eject the pressurized air through the air outlet, thereby accelerating the air flow inside the main shell, cooling the plastic pipe body and the cooling pipe located below the fan, thereby indirectly reducing the temperature of the cooling water inside the cooling pipe, and facilitating the recycling of the cooling water. When the half-bevel gear rotates 180 degrees, the teeth on the half-bevel gear are disengaged from the transmission bevel gear and meshed with the second transmission bevel gear, thereby driving the second transmission bevel gear to rotate in the opposite direction through rotation, thereby causing the fan to rotate in the opposite direction on the rotating frame through transmission, so that the fan can reciprocate inside the main shell, facilitating uniform cooling of the plastic pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of the main mechanism of the present invention;

[0025] Figure 3 This is a schematic diagram of the structural relationship between the water outlet pipe and the diverter plate of the present invention;

[0026] Figure 4 It is a schematic diagram of the structural relationship between the connecting plate and the rotating frame of the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the cooling mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the structural relationship between the half-tooth bevel gear and the transmission bevel gear of the present invention.

[0029] In the figure: 1. cooling mechanism; 101. water pump; 102. water outlet pipe; 103. diverter pipe; 104. diverter plate; 105. cooling pipe; 106. water spray hole; 107. water outlet; 2. main body mechanism; 201. main body shell; 202. heat dissipation groove; 203. plastic pipe body; 204. baffle; 205. slide groove; 206. water delivery groove; 207. rotating frame; 3. heat dissipation mechanism; 301. motor; 302. half-tooth bevel gear; 303. transmission bevel gear; 304. connecting shaft; 305. connecting plate; 306. fan; 307. air outlet. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 6 As shown, the present invention provides a cooling device for plastic pipe processing, comprising a cooling mechanism 1, a main body mechanism 2 is arranged on the cooling mechanism 1, and a heat dissipation mechanism 3 is arranged inside the main body mechanism 2;

[0032] The cooling mechanism 1 includes a water pump 101, a water outlet pipe 102 is fixedly connected to the top of the water pump 101, a diverter pipe 103 is fixedly connected to the top of the water outlet pipe 102, a diverter plate 104 is fixedly connected to the inside of the diverter pipe 103, two cooling pipes 105 are fixedly connected to the diverter pipe 103, a plurality of water spray holes 106 are evenly provided on the two cooling pipes 105, and a water outlet 107 is provided at one end of the cooling pipe 105 away from the diverter pipe 103.

[0033] A plurality of water spray holes 106 are respectively located on the side where the two cooling pipes 105 are close to each other, the shape of the diverter plate 104 is "V"-shaped, the shape of the cooling pipe 105 is "S"-shaped, the opening of the water outlet 107 is toward the side of the cooling pipe 105 away from the diverter pipe 103, the size of the water outlet 107 is larger than the size of the cooling pipe 105, and the two cooling pipes 105 are combined with each other to form a circular area between the two cooling pipes 105.

[0034] The above scheme is adopted: by setting the cooperation of the cooling pipe 105 and the water spray hole 106 and other structures, it is convenient to evenly cool the plastic pipe body 203, start the water pump 101, and pressurize the cooling water through the water pump 101 so that it enters the inside of the diverter pipe 103 through the outlet pipe 102, and moves to the inside of the two cooling pipes 105 respectively through the diversion of the diverter plate 104, so that the coolant is sprayed through a number of water spray holes 106 evenly distributed on the cooling pipe 105 under the action of water pressure and gravity, and the surface of the plastic pipe body 203 located between the two cooling pipes 105 is evenly cooled, thereby helping to form a smooth and uniform surface. At the same time, when the cooling water flows through the cooling pipe 105 layer by layer, it can evenly drive the heat on part of the plastic pipe body 203, avoid deformation, warping or cracks on the surface of the plastic pipe body 203 caused by uneven cooling, and improve the structural stability and quality of the finished product.

[0035] like Figures 1 to 4 As shown, the main body mechanism 2 includes a main body shell 201, a plurality of heat dissipation grooves 202 are evenly opened on the top of the main body shell 201, a plastic tube body 203 is slidably connected to the inside of the main body shell 201, a baffle 204 is fixedly connected to the inner wall of the main body shell 201, a slide groove 205 is opened on the inner wall of the main body shell 201, a water delivery groove 206 is opened on the inner wall of the main body shell 201, a rotating frame 207 is fixedly connected to the inside of the main body shell 201, the baffle 204 is located on one side of the main body shell 201 close to the slide groove 205, the slide groove 205 is located above the baffle 204, the plastic tube body 203 is located below the baffle 204, and the plastic tube body 203 passes through the inner wall of the main body shell 201 and extends to both sides of the main body shell 201.

[0036] The water trough 206 is located below the plastic pipe body 203, and the outer side of the water trough 206 is an inclined trough. The rotating frame 207 is located on the side of the main shell 201 away from the baffle 204. The water pump 101 is fixedly connected to the inner wall of the main shell 201. The water pump 101 is located on the side of the water trough 206 away from the baffle 204. The cross-section of the water trough 206 close to the water pump 101 is larger than the cross-section of the water trough 206 away from the water pump 101. The plastic pipe body 203 is located between the two cooling pipes 105. The size of the plastic pipe body 203 is smaller than the circular area formed between the two cooling pipes 105. The baffle 204 is located on the side of the water outlet 107 away from the water pump 101. The rotating frame 207 is located on the side of the cooling pipe 105 away from the baffle 204. The diverter pipe 103 is located below the plastic pipe body 203.

[0037] The above scheme is adopted: by setting the cooperation of structures such as the water outlet 107 and the baffle 204, it is convenient to perform multi-stage cooling on the plastic pipe body 203. The cooling water that is not sprayed out from the water spray hole 106 is sprayed out through the water outlet 107 on the cooling pipe 105, and the sprayed cooling water is sprayed downward through the inclined surface on the baffle 204 to wash the surface of the plastic pipe body 203 that is about to be moved out of the main shell 201. The plastic pipe body 203 that has been hardened after cooling in the above steps is cooled in the last step, which further improves the cooling effect and does not affect the hardened plastic pipe body 203.

[0038] like Figures 2 to 6 As shown, the heat dissipation mechanism 3 includes a motor 301, the bottom of the motor 301 is rotatably connected to a half-tooth bevel gear 302, the side of the half-tooth bevel gear 302 is meshed with a transmission bevel gear 303, there are two transmission bevel gears 303, a connecting shaft 304 is fixedly connected between the two transmission bevel gears 303, a connecting plate 305 is fixedly connected to the transmission bevel gear 303, a fan 306 is arranged on the side of the connecting plate 305 away from the transmission bevel gear 303, a plurality of air outlet holes 307 are evenly opened at the bottom of the fan 306, the half-tooth bevel gear 302 is located above the connecting shaft 304, and the half-tooth bevel gear 302 is located between the two transmission bevel gears 303.

[0039] The motor 301 is fixedly connected to the top of the main shell 201, the half-tooth bevel gear 302 passes through the top of the main shell 201 and extends to the inside of the main shell 201, the transmission bevel gear 303 is rotatably connected to the inner wall of the main shell 201, the fan 306 is located above the plastic tube body 203, the end of the fan 306 away from the transmission bevel gear 303 is slidably connected to the slide groove 205, the connecting plate 305 is rotatably connected to the rotating frame 207, and the fan 306 is rotatably connected with the rotating frame 207 as the center.

[0040] The above scheme is adopted: by setting the cooperation of the half-tooth bevel gear 302 and the transmission bevel gear 303 and other structures, the problem of deformation and uneven cooling of the surface of the soft plastic pipe body 203 caused by direct blowing of the fan 306 is solved, the motor 301 is started to rotate the half-tooth bevel gear 302, and the rotation of the half-tooth bevel gear 302 will rotate the transmission bevel gear 303 meshing with it through the teeth, thereby driving the fan 306 to rotate on the rotating frame 207 through the connecting plate 305, and starting the fan 306 to eject the pressurized air through the air outlet 307, thereby accelerating the air flow inside the main shell 201, and the fan 306 below The plastic pipe body 203 and the cooling pipe 105 are cooled, thereby indirectly reducing the temperature of the cooling water inside the cooling pipe 105, which is convenient for the recycling of the cooling water. When the half-tooth bevel gear 302 rotates 180 degrees, the teeth on the half-tooth bevel gear 302 are disengaged from the transmission bevel gear 303 and meshed with the second transmission bevel gear 303, thereby driving the second transmission bevel gear 303 to rotate in the opposite direction through rotation, thereby causing the fan 306 to rotate in the opposite direction on the rotating frame 207 through transmission, so that the fan 306 can reciprocate inside the main shell 201, which is convenient for uniform cooling of the plastic pipe body 203.

[0041] A cooling method for plastic pipe processing, the cooling method is as follows:

[0042] S1. First, fix the device at the discharge port of the plastic pipe production device, and make the discharge port located on the side of the main shell 201 close to the motor 301, then send the mixed plastic raw material into the hopper of the extruder, heat the raw material to a molten state through the rotation of the screw, and then extrude it through the mold to form a continuous tubular object, and enter the interior of the main shell 201 from the side of the main shell 201 close to the motor 301. At the same time, the staff needs to start the water pump 101, and pressurize the cooling water through the water pump 101 so that it passes through the outlet pipe 102 and enters the inside of the diverter pipe 103, and moves to the inside of the two cooling pipes 105 respectively through the diversion of the diverter plate 104, so that the coolant is sprayed out through a number of water spray holes 106 evenly distributed on the cooling pipe 105 under the action of water pressure and gravity, and the surface of the plastic pipe body 203 located between the two cooling pipes 105 is cooled. At the same time, when the cooling water flows through the cooling pipe 105 layer by layer, it can drive the heat on part of the plastic pipe body 203;

[0043] S2, start the motor 301 at the same time to rotate the half-bevel gear 302. The rotation of the half-bevel gear 302 will rotate the transmission bevel gear 303 meshing with it through the teeth, thereby driving the fan 306 to rotate on the rotating frame 207 through the connecting plate 305, and start the fan 306 to eject the pressurized air through the air outlet 307, accelerate the air flow inside the main shell 201, cool the plastic pipe body 203 and the cooling pipe 105 located below the fan 306, so as to indirectly reduce the temperature of the cooling water inside the cooling pipe 105, and when the half-bevel gear 302 rotates 180 degrees, the teeth on the half-bevel gear 302 are disengaged from the transmission bevel gear 303, and mesh with the second transmission bevel gear 303, thereby driving the second transmission bevel gear 303 to rotate in the opposite direction through rotation, thereby causing the fan 306 to rotate in the opposite direction on the rotating frame 207 through transmission, so that the fan 306 can reciprocate inside the main shell 201;

[0044] S3. The cooling water that is not sprayed out from the water spray hole 106 will be sprayed out through the water outlet 107 on the cooling pipe 105, and will pass through the inclined surface on the baffle 204 so that the sprayed cooling water will be sprayed obliquely downward to wash the surface of the plastic pipe body 203 that is about to be moved out of the main shell 201, and perform the final step of cooling the plastic pipe body 203. Finally, the cooling water will flow along the water delivery trough 206 to the side of the water pump 101 close to the baffle 204, and then be discharged from the water outlet pipe 102 under pressure through the water pump 101. The above steps are repeated to perform circulating cooling.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling device for plastic pipe processing, comprising a cooling mechanism (1), characterized in that: The cooling mechanism (1) is provided with a main body mechanism (2), and a heat dissipation mechanism (3) is provided inside the main body mechanism (2); The cooling mechanism (1) comprises a water pump (101), the top of the water pump (101) is fixedly connected to a water outlet pipe (102), the top of the water outlet pipe (102) is fixedly connected to a flow distribution pipe (103), the interior of the flow distribution pipe (103) is fixedly connected to a flow distribution plate (104), two cooling pipes (105) are fixedly connected to the flow distribution pipe (103), a plurality of water spray holes (106) are evenly provided on the two cooling pipes (105), and a water outlet (107) is provided at one end of the cooling pipe (105) away from the flow distribution pipe (103); The main body mechanism (2) comprises a main body shell (201), a plurality of heat dissipation grooves (202) are evenly arranged on the top of the main body shell (201), a plastic pipe body (203) is slidably connected to the inside of the main body shell (201), a baffle (204) is fixedly connected to the inner wall of the main body shell (201), a slide groove (205) is arranged on the inner wall of the main body shell (201), a water delivery groove (206) is arranged on the inner wall of the main body shell (201), and a rotating frame (207) is fixedly connected to the inside of the main body shell (201); The heat dissipation mechanism (3) comprises a motor (301), the bottom of the motor (301) is rotatably connected to a half-tooth bevel gear (302), the side of the half-tooth bevel gear (302) is meshed with a transmission bevel gear (303), there are two transmission bevel gears (303), a connecting shaft (304) is fixedly connected between the two transmission bevel gears (303), a connecting plate (305) is fixedly connected to the transmission bevel gear (303), a fan (306) is arranged on a side of the connecting plate (305) away from the transmission bevel gear (303), and a plurality of air outlet holes (307) are evenly arranged at the bottom of the fan (306); The half-tooth bevel gear (302) is located above the connecting shaft (304), and the half-tooth bevel gear (302) is located between the two transmission bevel gears (303). The motor (301) is fixedly connected to the top of the main housing (201), and the half-tooth bevel gear (302) passes through the top of the main housing (201) and extends to the inside of the main housing (201). The transmission bevel gear (303) is rotationally connected to the inner wall of the main housing (201). The fan (306) is located above the plastic pipe body (203), and one end of the fan (306) away from the transmission bevel gear (303) is slidably connected to the slide groove (205). The connecting plate (305) is rotationally connected to the rotating frame (207), and the fan (306) is rotationally connected with the rotating frame (207) as the center.

2. The cooling device for plastic pipe processing according to claim 1, characterized in that: A plurality of the water spray holes (106) are respectively located on a side where the two cooling pipes (105) are close to each other, the appearance of the diverter plate (104) is "V"-shaped, the appearance of the cooling pipe (105) is "S"-shaped, the opening of the water outlet (107) faces the side of the cooling pipe (105) away from the diverter pipe (103), the size of the water outlet (107) is larger than the size of the cooling pipe (105), and the two cooling pipes (105) are combined to form a circular area between the two cooling pipes (105).

3. The cooling device for plastic pipe processing according to claim 1, characterized in that: The baffle (204) is located on a side of the main shell (201) close to the slide groove (205), the slide groove (205) is located above the baffle (204), the plastic tube body (203) is located below the baffle (204), and the plastic tube body (203) penetrates the inner wall of the main shell (201) and extends to both sides of the main shell (201).

4. The cooling device for plastic pipe processing according to claim 1, characterized in that: The water delivery trough (206) is located below the plastic pipe body (203), the outer side of the water delivery trough (206) is in the form of an inclined groove, and the rotating frame (207) is located on a side of the main body shell (201) away from the baffle (204).

5. The cooling device for plastic pipe processing according to claim 1, characterized in that: The water pump (101) is fixedly connected to the inner wall of the main body shell (201); the water pump (101) is located on a side of the water delivery trough (206) away from the baffle (204); the cross section of the side of the water delivery trough (206) close to the water pump (101) is larger than the cross section of the side of the water delivery trough (206) away from the water pump (101); the plastic pipe body (203) is located between the two cooling pipes (105); the size of the plastic pipe body (203) is smaller than the circular area formed between the two cooling pipes (105); the baffle (204) is located on a side of the water outlet (107) away from the water pump (101); the rotating frame (207) is located on a side of the cooling pipe (105) away from the baffle (204); and the diverter pipe (103) is located below the plastic pipe body (203).

6. A cooling method for plastic pipe processing, using a cooling device for plastic pipe processing as claimed in any one of claims 1 to 5, characterized in that: The cooling method is as follows: S1. First, the device is fixed at the discharge port of the plastic pipe production device, and the discharge port is located on the side of the main housing (201) close to the motor (301). Then, the mixed plastic raw material is fed into the hopper of the extruder. The raw material is heated to a molten state through the rotation of the screw. Then, it is extruded through a die to form a continuous tubular object, and enters the interior of the main housing (201) from the side of the main housing (201) close to the motor (301). At the same time, the staff needs to start the water pump (101) to pump cooling water through the water pump (101). Pressurizing the water so that it enters the interior of the diverter pipe (103) through the outlet pipe (102) and moves to the interior of the two cooling pipes (105) respectively through the diversion of the diverter plate (104), so that the coolant is sprayed out through a plurality of water spray holes (106) evenly distributed on the cooling pipe (105) under the action of water pressure and gravity, thereby cooling the surface of the plastic pipe body (203) located between the two cooling pipes (105). At the same time, when the cooling water flows through the cooling pipes (105) layer by layer, it can drive away the heat on part of the plastic pipe body (203); S2. Simultaneously, the motor (301) is started to rotate the half-tooth bevel gear (302). The rotation of the half-tooth bevel gear (302) causes the transmission bevel gear (303) meshing therewith to rotate through the teeth, thereby driving the fan (306) to rotate on the rotating frame (207) through the connecting plate (305), and starting the fan (306) to eject pressurized air through the air outlet (307), thereby accelerating the air flow inside the main housing (201) and cooling the plastic pipe main body (203) and the cooling pipe (105) located below the fan (306). The cooling device (302) is cooled, thereby indirectly reducing the temperature of the cooling water inside the cooling pipe (105). When the half-tooth bevel gear (302) rotates 180 degrees, the teeth on the half-tooth bevel gear (302) are disengaged from the transmission bevel gear (303) and mesh with the second transmission bevel gear (303), thereby driving the second transmission bevel gear (303) to rotate in the opposite direction through rotation, thereby causing the fan (306) to rotate in the opposite direction on the rotating frame (207) through transmission, so that the fan (306) can reciprocate inside the main housing (201); S3. The cooling water that is not sprayed out from the water spray hole (106) is sprayed out through the water outlet (107) on the cooling pipe (105), and passes through the inclined surface on the baffle (204), so that the sprayed cooling water is inclined downward to wash the surface of the plastic pipe body (203) that is about to be moved out of the main shell (201), and the plastic pipe body (203) is cooled in the last step. Finally, the cooling water flows along the water delivery trough (206) to the side of the water pump (101) close to the baffle (204), and is then pressurized by the water pump (101) and discharged from the water outlet pipe (102). The above steps are repeated to perform cyclic cooling.

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