Composite plastic pipe cooling system capable of rapidly cooling

Abstract

The invention discloses a quick-cooling composite plastic pipe cooling system, and relates to the technical field of composite plastic pipe production. Comprising an air cooling piece, a water cooling device and a plastic coating piece, the air cooling piece comprises an air cooling pipe, an airflow guide pipe and a draught fan, the airflow guide pipe is installed on the air cooling pipe and communicates with the interior of the air cooling pipe, and the draught fan is installed at the other end of the air cooling pipe; the first butt joint disc and the second butt joint disc are oppositely arranged and are fixedly connected through fixing bolts arranged on the periphery. The inclination angle of the roller line can be adjusted through the structure. After plastic coating and cooling of the composite plastic pipe are completed, the angle of the roller line is adjusted through the air cylinder, the coated plastic pipe is pressed, the whole composite plastic pipe can be tightened, vibration of the composite plastic pipe is reduced in the conveying process, the phenomenon that in a traditional water cooling and air cooling mode, a steel pipe is soaked in water, and the wall scraping phenomenon is likely to happen is avoided, and meanwhile it is guaranteed that the steel pipe is well supported; and the curing quality of surface plastic coating is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic-reinforced pipe production, in particular to a rapid cooling system for plastic-reinforced pipes. Background Art

[0002] Plastic-coated pipe is a kind of pipe made of stainless steel pipe covered with wear-resistant and corrosion-resistant polyethylene plastic. It has the characteristics of thermal insulation, wear resistance and corrosion resistance, and is widely used in building hot water supply pipes and other fields.

[0003] During the production process of the plastic-reinforced pipe, it is necessary to coat the surface of the steel pipe with plastic. The traditional coating process requires cooling after the steel pipe is coated. The cooling is mainly carried out by cold air and liquid cooling. Due to the long length of the steel pipe, the support is weak during the cooling process, and the wall is easily scraped, which reduces the coating quality of the plastic-reinforced pipe. In addition, the coating equipment is large in size and complex in structure. In view of this situation, the present invention proposes a new solution. Summary of the invention

[0004] The object of the present invention is to provide a rapid cooling system for plastic-reinforced pipes to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a rapid cooling system for plastic-reinforced pipes, comprising: Air-cooled parts, water-cooled devices and plastic-coated parts, the air-cooled parts include air-cooled pipes, air flow ducts and fans, the air flow ducts are installed on the air-cooled pipes and communicate with the inside of the air-cooled pipes, and the fans are installed on the other end of the air-cooled pipes; The plastic-coated part comprises a docking plate 1 and a docking plate 2, which are arranged opposite to each other and connected and fixed by fixing bolts arranged at the periphery, and a through hole is arranged in the middle of the docking plate 1 and the docking plate 2.

[0006] Further regarding this scheme, annular grooves are provided on opposite sides of docking disc one and docking disc two. After docking disc one and docking disc two are docked, the two annular grooves form an annular cavity. An injection molding interface is installed at one place of the docking discs, and the injection molding interface is connected to the interior of the annular cavity. A heating wire is also provided in the annular cavity, and the heating wire is arranged in a ring shape along the shape of the annular cavity.

[0007] Further regarding this scheme, a circle of extrusion heads is arranged around the through hole formed after the docking of docking disc 1 and docking disc 2, the discharge end of the extrusion head is located at the through hole and outside the docking disc 1, the feed end of the extrusion head is located inside the docking disc 1, the interval between each two extrusion head discharge ends is 0.5cm-1.5cm, and a feed hole is arranged corresponding to each extrusion head, and the feed hole extends from the annular cavity to the extrusion head and is connected with the extrusion head.

[0008] Furthermore, a rubber ring is fixed around the inner wall of the through holes of the docking plate one and the docking plate two. The two rubber rings are docked to form an annular cavity, and the distance between the two sides where the two rubber rings are in contact is 1 mm - 10 mm.

[0009] Furthermore, an extension pipe and a sleeve are respectively installed on one side of the docking plate one and the docking plate two. Multiple groups of retaining steel bars are fixed on the inner wall of the sleeve. The retaining steel bars are in a "C" shape, and both ends of each are fixed to the inner wall of the sleeve. Each group of retaining steel bars is arranged in a circle around the inner wall of the sleeve.

[0010] Furthermore, the water cooling device includes a water tank. The air cooling part is arranged between the water cooling device and the coated plastic part. Through grooves are opened at both ends of the water tank. A water crossing part is installed on the top of the water tank. An opening is arranged directly below the water crossing part. A number of water spray pipes are installed on the water tank. The water outlet ends of the water spray pipes face one side of the water crossing part. The cross section of the water crossing part is in an inverted triangle shape, and the water spray pipes spray water onto the water crossing part.

[0011] Furthermore, the water inlet ends of the water spray pipes are arranged inside the water tank. A paddle pump is installed on each water spray pipe. Multiple paddle pumps are coaxially arranged. The paddles of each paddle pump are connected by a shaft rod. One end of the shaft rod is fixed with a transmission shaft one. The paddles of one of the fans are also coaxially fixed with an output shaft. The end of the output shaft is fixed with a transmission shaft two. The transmission shaft two and the transmission shaft one are connected by a transmission belt.

[0012] Furthermore, a retaining part is arranged at the end of the water tank. The retaining part includes two linear slides respectively arranged on both sides of the through groove. Two sliders are slidably installed on each of the two linear slides. The two sliders are arranged vertically. A roller line is arranged between the two upper sliders. A cylinder is rotatably installed on the two lower sliders. The other end of the cylinder is rotatably installed on both sides of the other end of the roller line.

[0013] Furthermore, a number of support rods are fixed at one end of the water tank. The ends of the support rods are connected by a fixing plate. Among them, the coated plastic part is installed at the fixing plate.

[0014] After the steel pipe is coated, it needs to be cooled to solidify the surface plastic. The traditional water cooling plus air cooling requires the pipe to be immersed in water. Due to the length of the steel pipe, the steel pipe is prone to scraping the wall after being immersed in water, and the support of the steel pipe is poor and it is easy to vibrate, affecting the solidification quality of the surface coating. After the coated pipe is coated and cooled, the angle of the roller line is adjusted by the cylinder to press the coating, which can tighten the whole coated pipe and reduce the vibration of the coated pipe during transportation.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The fast cooling plastic tube cooling system can adjust the inclination angle of the roller line through the structure. After the plastic tube is coated and cooled, the cylinder adjusts the angle of the roller line to press the plastic coating, which can tighten the entire plastic tube and reduce the vibration of the plastic tube during transportation. It avoids the wall scraping phenomenon caused by the steel tube immersed in water in the traditional water cooling and air cooling method, and at the same time ensures good support of the steel tube and improves the curing quality of the surface plastic coating.

[0016] At the same time, the annular grooves on the opposite sides of the docking disc 1 and the docking disc 2 form an annular cavity, and the raw materials are supplied through the injection molding interface. A heating wire is arranged in the annular cavity. The heating wire is arranged in a ring shape along the shape of the annular cavity and avoids contact with the annular cavity. It is used to maintain the temperature of the plastic coating raw material, avoid solidification of the plastic coating raw material, and ensure that the raw material is in a good plastic coating state. Each extrusion head has a corresponding feed hole, which extends from the annular cavity to the extrusion head and is connected with the extrusion head. The inner wall diameter of the feed hole close to the annular cavity is larger than the diameter close to the extrusion head. This structure can ensure a stable supply of plastic coating raw materials and ensure a smooth plastic coating process. The structure is simple and efficient and suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the disassembled structure of the plastic coating device of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the plastic coating device of the present invention; Figure 3 It is a schematic diagram of the overall structure of the cooling production line of the present invention; Figure 4 It is a schematic diagram of the position structure of the retaining member of the present invention.

[0018] In the figure: 1. water cooling device; 101. water tank; 102. base; 103. water spray pipe; 104. paddle pump; 105. water-crossing member; 106. opening; 107. water inlet pipe; 108. transmission shaft 1; 109. groove; 2. air cooling member; 201. air cooling pipe; 202. air flow duct; 203. fan; 204. output shaft; 205. transmission shaft 2; 206. transmission belt; 3. support rod; 4. coating Plastic parts; 401, docking plate 1; 402, docking plate 2; 403, ring groove; 404, fixing bolt; 405, feed hole; 406, extrusion head; 407, heating wire; 408, rubber ring; 409, sleeve; 410, retaining steel bar; 411, extension tube; 412, injection molding interface; 5, fixing plate; 6, retaining part; 601, roller line; 602, linear slide; 603, slider; 604, cylinder. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figure 1 As shown, the present invention provides a technical solution: a rapid cooling system for plasticized pipes, including a plasticized pipe coating device, including a plastic coated part 4, the plastic coated part 4 includes a docking plate 1 401 and a docking plate 2 402, the docking plate 1 401 and the docking plate 2 402 are relatively arranged and connected and fixed by fixing bolts 404 arranged around them, which is convenient for disassembly and installation during equipment maintenance, cleaning or replacement of parts, and a through hole is arranged in the middle of the docking plate 1 401 and the docking plate 2 402, and the steel pipe passes through the through hole and the plastic coating work is completed on the surface of the pipe, which can ensure that the position is relatively fixed during the plastic coating process, which is beneficial to the uniformity of the plastic coating.

[0021] like Figure 1 As shown, an annular groove 403 is provided on the opposite side of the docking disc 1 401 and the docking disc 2 402. After the docking disc 1 401 and the docking disc 2 402 are docked, the two annular grooves 403 form an annular cavity. An injection molding interface 412 is installed at the docking disc 1 401. The injection molding interface 412 is connected to the inside of the annular cavity. The raw material is supplied into the annular cavity from the injection molding interface 412. A heating wire 407 is also provided in the annular cavity. The heating wire 407 is arranged in a ring shape along the shape of the annular cavity and avoids contact with the annular cavity. It is used to maintain the temperature of the plastic-coated raw material and avoid solidification of the plastic-coated raw material.

[0022] like Figure 1 As shown, a circle of extrusion heads 406 are arranged around the through hole formed after the docking of the docking disc 1 401 and the docking disc 2 402, the discharge end of the extrusion head 406 is located at the through hole and outside the docking disc 1 401, and the feed end of the extrusion head 406 is located inside the docking disc 1 401. Under high pressure, the raw materials in the docking disc 1 401 and the docking disc 2 402 are squeezed out from the feed end to the discharge end of the extrusion head 406, and the interval between each two discharge ends of the extrusion heads 406 is 0.5cm-1.5cm. A feed hole 405 is arranged corresponding to each extrusion head 406, and the feed hole 405 extends from the annular cavity to the extrusion head 406 and is connected with the extrusion head 406, and the inner wall diameter of the feed hole 405 close to one end of the annular cavity is larger than the diameter close to one end of the extrusion head 406, so that the plastic coating raw material can be stably supplied.

[0023] like Figure 1As shown, a rubber ring 408 is fixed to the inner wall of the through holes of the docking plate one 401 and the docking plate two 402. After the two rubber rings 408 are docked, an annular cavity is formed. The annular cavity wraps the discharge end of the extrusion head 406. And the distance between the side where the two rubber rings 408 are in contact is 1 mm - 10 mm. During the coating process, the coating raw material is filled into the annular cavity and gradually extruded from the distance between the two rubber rings 408. When the steel pipe passes by, it is coated on the surface of the steel pipe.

[0024] As Figure 1 and Figure 2 shown, an extension pipe 411 and a sleeve 409 are respectively installed on one side of the docking plate one 401 and the docking plate two 402. Among them, the length of the sleeve 409 is greater than that of the extension pipe 411. The extension pipe 411 and the sleeve 409 can be fixed to one side of the docking plate one 401 and the docking plate two 402 through fixing devices such as clamping or screwing. A plurality of retaining steel bars 410 are fixed to the inner wall of the sleeve 409. The retaining steel bars 410 are in a "C" shape, and both ends of them are fixed to the inner wall of the sleeve 409. Each group of retaining steel bars 410 is arranged in a circle around the inner wall of the sleeve 409. When the steel pipe passes through the sleeve 409, the retaining steel bars 410 limit the steel pipe, so that the steel pipe can maintain stability when passing through the through hole, and the coating on the surface of the steel pipe is more uniform and stable.

[0025] As Figure 3 shown, the stainless steel pipe cooling production line includes a coated part 4, an air-cooling part 2 and a water-cooling device 1. After the steel pipe passes through the coated part 4, it needs to be quickly cooled so that the plastic can be solidified and formed on the surface of the steel pipe. Among them, the air-cooling part 2 includes an air-cooling pipe 201, an air flow conduit 202 and a fan 203. The air-cooling pipe 201 is horizontally arranged. After the steel pipe passes through the coated part 4, it passes through the air-cooling pipe 201. The air flow conduit 202 is installed on the air-cooling pipe 201 and is connected to the inside of the air-cooling pipe 201. The fan 203 is installed at the other end of the air-cooling pipe 201. Cold air flow is provided by the fan 203 and enters the air-cooling pipe 201 after passing through the air flow conduit 202. When the steel pipe passes through the air-cooling pipe 201, it can be initially cooled by the cold air. A number of air-cooling parts 2 are provided to improve the cooling effect.

[0026] As Figure 3As shown, the water cooling device 1 includes a water tank 101, and the air cooling part 2 is arranged between the water cooling device 1 and the plastic coated part 4. After the steel pipe is air-cooled, it passes through the water tank 101 for water cooling. The water tank 101 is filled with water. Both ends of the water tank 101 are provided with through grooves 109. The through grooves 109 are arranged so that the pipe can enter the water tank 101. A water crossing part 105 is installed on the top of the water tank 101. An opening 106 is arranged just below the water crossing part 105. A plurality of water spray pipes 103 are installed on the water tank 101. The outlet of the water spray pipe 103 The water end is facing the side of the water ferry 105, wherein the cross-section of the water ferry 105 is an inverted triangle. The water spray pipe 103 sprays water onto the water ferry 105. Under the action of gravity, the water flows down from the water ferry 105 in a waterfall shape. During use, the steel pipe is located below the water ferry 105 when passing through the water tank 101. The waterfall-like water flow can cover the surface of the steel pipe to cool down the plastic-coated part of the steel pipe surface, so that there can be enough space between the pipe body and the water tank 101 to avoid scratches on the plastic-coated part of the surface.

[0027] like Figure 3 As shown, in order to improve the utilization rate of water resources, the water inlet end of the water spray pipe 103 is arranged inside the water tank 101, and each water spray pipe 103 is installed with a paddle pump 104. The multiple paddle pumps 104 are coaxially arranged, and the paddles of each paddle pump 104 are connected by a shaft, and a transmission shaft 108 is fixed at one end of the shaft. The paddles of one of the fans 203 are also coaxially fixed with an output shaft 204, and a transmission shaft 205 is fixed at the end of the output shaft 204. The transmission shaft 205 is connected to the transmission shaft 108 through a transmission belt 206. When the fan 203 rotates, power output can be achieved to the paddle pump 104 through the connection between the transmission shaft 108 and the transmission shaft 205, and the paddle pump 104 can pump water from the water tank 101 to achieve water recycling. A plurality of support rods 3 are fixed at one end of the water tank 101, and the ends of the support rods 3 are connected by a fixing plate 5, wherein the plastic-coated part 4 is installed at the fixing plate 5, and a base 102 is installed at the bottom of the water tank 101 to support the water tank 101, and a water inlet pipe 107 is installed on the side of the water tank 101 opposite to the water spray pipe 103 for supplying water.

[0028] like Figure 4 As shown, a retaining member 6 is provided at the end of the water tank 101, and the retaining member 6 includes two linear slides 602 respectively provided on both sides of the through groove 109, and two sliders 603 are slidably installed on the two linear slides 602, and the two sliders 603 are provided up and down, and a roller line 601 is provided between the two upper sliders 603, and the connection is rotatably installed, and the steel pipe passes from the bottom of the roller line 601 to enter the next production line, and a cylinder 604 is rotatably installed on the two sliders 603 located at the bottom, and the other end of the cylinder 604 is rotatably installed on both sides of the other end of the roller line 601. The inclination angle of the roller line 601 can be adjusted through the setting of this structure.

[0029] Since the steel pipe needs to be cooled after plastic coating to allow the surface plastic to solidify, traditional water cooling and air cooling require the pipe to be immersed in water. Due to the length of the steel pipe, it is easy to scrape the wall after the steel pipe is immersed in water, and the steel pipe has poor support and is prone to vibrate, which affects the solidification quality of the surface plastic coating. After the plastic-recoated pipe is coated and cooled, the angle of the roller line 601 is adjusted by the cylinder 604 to press the plastic coating, which can tighten the entire plastic-recoated pipe and reduce the vibration of the plastic-recoated pipe during transportation.

[0030] 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 limited by the attached embodiments and their equivalents.

Claims

1. A rapid cooling system for plastic-reinforced pipes, characterized in that: Including: An air-cooling component (2), a water-cooling device (1), and a plastic-coated part (4). The air-cooling component (2) includes an air-cooling pipe (201), an air flow conduit (202), and a fan (203). The air flow conduit (202) is installed on the air-cooling pipe (201) and is internally connected to the air-cooling pipe (201). The fan (203) is installed at the other end of the air-cooling pipe (201). The plastic-coated part (4) includes a first docking plate (401) and a second docking plate (402). The first docking plate (401) and the second docking plate (402) are arranged oppositely and are connected and fixed by fixing bolts (404) arranged around the periphery. Through holes are provided in the middle of the first docking plate (401) and the second docking plate (402).

2. The rapid cooling system for plastic-reinforced pipes according to claim 1, characterized in that: Ring grooves (403) are provided on the opposite sides of the first docking plate (401) and the second docking plate (402). After the first docking plate (401) and the second docking plate (402) are docked, the two ring grooves (403) form an annular cavity. An injection molding interface (412) is installed at the first docking plate (401), and the injection molding interface (412) is internally connected to the annular cavity. A heating wire (407) is also provided in the annular cavity, and the heating wire (407) is arranged in a loop along the shape of the annular cavity.

3. The rapid cooling system for plastic-reinforced pipes according to claim 1 is characterized in that: A circle of extrusion heads (406) is provided around the through holes formed after the first docking plate (401) and the second docking plate (402) are docked. The discharging ends of the extrusion heads (406) are located at the through holes and outside the first docking plate (401), and the feeding ends of the extrusion heads (406) are located inside the first docking plate (401). The interval between the discharging ends of every two extrusion heads (406) is 0.5 cm - 1.5 cm. A feeding hole (405) is provided corresponding to each extrusion head (406). The feeding hole (405) extends from the annular cavity to the extrusion head (406) and is connected to the extrusion head (406).

4. The rapid cooling system for plastic-reinforced pipes according to claim 1 is characterized in that: A circle of rubber rings (408) is fixed on the inner walls of the through holes of the first docking plate (401) and the second docking plate (402). The two rubber rings (408) are docked to form an annular cavity, and the distance between the side where the two rubber rings (408) are in contact is 1 mm - 10 mm.

5. The rapid cooling system for plastic-reinforced pipes according to claim 1 is characterized in that: An extension pipe (411) and a sleeve (409) are respectively installed on one side of the first docking plate (401) and the second docking plate (402). A plurality of groups of retaining steel bars (410) are fixed on the inner wall of the sleeve (409). The retaining steel bars (410) are in an "L" shape, and both ends thereof are fixed to the inner wall of the sleeve (409). Each group of retaining steel bars (410) is provided with a circle around the inner wall of the sleeve (409).

6. The rapid cooling system for plastic-reinforced pipes according to claim 1 is characterized in that: The water-cooling device (1) includes a water tank (101). The air-cooling component (2) is arranged between the water-cooling device (1) and the plastic-coated part (4). Through slots (109) are provided at both ends of the water tank (101). A water-crossing part (105) is installed on the top of the water tank (101). An opening (106) is provided directly below the water-crossing part (105). A plurality of water spray pipes (103) are installed on the water tank (101), and the water outlet ends of the water spray pipes (103) face one side of the water-crossing part (105). The cross-section of the water-crossing part (105) is in an inverted triangular shape, and the water spray pipes (103) spray water onto the water-crossing part (105).

7. A rapid cooling system for plastic-reinforced pipes according to claim 6, characterized in that: The water inlet end of the water spray pipe (103) is arranged inside the water tank (101), and each water spray pipe (103) is equipped with a paddle pump (104). The plurality of paddle pumps (104) are coaxially arranged, and the paddles of each paddle pump (104) are connected to each other via a shaft, and a transmission shaft 1 (108) is fixed to one end of the shaft. The paddles of one of the fans (203) are also coaxially fixed to an output shaft (204), and a transmission shaft 2 (205) is fixed to the end of the output shaft (204), and the transmission shaft 2 (205) is connected to the transmission shaft 1 (108) via a transmission belt (206).

8. The rapid cooling system for plastic-reinforced pipes according to claim 1, characterized in that: A retaining member (6) is provided at the end of the water tank (101), and the retaining member (6) comprises two linear slides (602) respectively provided on both sides of the through groove (109), and two sliders (603) are slidably mounted on the two linear slides (602), and the two sliders (603) are arranged up and down, and a roller line (601) is provided between the two sliders (603) located at the top, and a cylinder (604) is rotatably mounted on the two sliders (603) located at the bottom, and the other end of the cylinder (604) is rotatably mounted on both sides of the other end of the roller line (601).

9. The rapid cooling system for plastic-reinforced pipes according to claim 6, characterized in that: A plurality of support rods (3) are fixed to one end of the water tank (101), and the ends of the support rods (3) are connected via a fixing plate (5), wherein the plastic-coated part (4) is mounted on the fixing plate (5).

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