A sewage pipe cooling and forming device

Abstract

This application relates to a sewage pipe cooling and forming device, belonging to the technical field of sewage pipes. It includes a forming chamber, with a first support fixed between one end of the forming chamber and the ground. A pre-cooling pipe is fixed at the end of the forming chamber away from the first support. An air inlet box and an air outlet box are fixed to the circumferential sidewalls at both ends of the pre-cooling pipe, respectively. A second support is fixed between the air inlet box and the ground. A ventilation box is provided between the air inlet box and the air outlet box, and is fitted inside the circumferential sidewall of the pre-cooling pipe. An air inlet and an air outlet are respectively circumferentially opened on the end faces of both ends of the ventilation box. An air injection port and a return air port are respectively circumferentially opened on the opposite sidewalls of the air inlet box and the air outlet box. The air inlet and air injection port are aligned, and the air outlet and return air port are aligned. A circulating air cooler is provided on one side of the pre-cooling pipe. An air inlet pipe is fixed between the circulating air cooler and the air inlet box, and an air outlet pipe is fixed between the circulating air cooler and the air outlet box. This application has the effect of improving cooling efficiency.

Description

Technical Field

[0001] This application relates to the technical field of sewage pipes, and in particular to a sewage pipe cooling and forming device. Background Technology

[0002] HDPE steel-reinforced spiral drainage pipe is a new type of pipe made of high-density polyethylene and steel strip as raw materials, and formed by hot extrusion and winding. It has excellent high rigidity, high strength and good toughness, as well as light weight, strong impact resistance and not easy to break. With its high ring stiffness, steel-reinforced polyethylene spiral drainage pipe is very suitable for drainage pipeline engineering fields such as rainwater, sewage and wastewater discharge systems.

[0003] The existing HDPE pipe production uses extrusion molding, where the raw material is first melted and extruded, and the molten material enters between the mandrel and the shell of the molding cavity. Then the formed pipe is cooled.

[0004] Regarding the aforementioned technologies, the inventors believe that most of the current cooling methods are water cooling, which has a long cooling time and low cooling efficiency. Summary of the Invention

[0005] To improve cooling efficiency, this application provides a sewage pipe cooling and forming apparatus.

[0006] The sewage pipe cooling and forming device provided in this application adopts the following technical solution:

[0007] A sewage pipe cooling and forming device includes a forming chamber. A first support is fixed between one end of the forming chamber and the ground. A pre-cooling pipe is fixed at the end of the forming chamber away from the first support. An air inlet box and an air outlet box are fixed to the circumferential sidewalls at both ends of the pre-cooling pipe, respectively. A second support is fixed between the air inlet box and the ground. A ventilation box is provided between the air inlet box and the air outlet box. The ventilation box is fitted inside the circumferential sidewall of the pre-cooling pipe. An air inlet and an air outlet are respectively circumferentially opened on the end faces at both ends of the ventilation box. An air injection port and a return air port are respectively circumferentially opened on the opposite sidewalls of the air inlet box and the air outlet box. The air inlet and air injection port are aligned, and the air outlet and return air port are aligned. A circulating air cooler is provided on one side of the pre-cooling pipe. An air inlet pipe is fixed between the circulating air cooler and the air inlet box, and an air outlet pipe is fixed between the circulating air cooler and the air outlet box.

[0008] By adopting the above technical solution, after the raw material is melted and extruded, it is introduced into the pre-cooling pipe. At this time, the circulating cold air fan introduces cold air into the air inlet box through the air inlet pipe, so that the cold air enters the ventilation box and pre-cools the molten raw material introduced into the pre-cooling pipe. After the pre-cooling treatment is completed, the molten raw material enters the molding chamber for cooling and shaping. Through the above structure, the cooling and shaping time is shortened, thereby improving the cooling efficiency.

[0009] Optionally, the end faces of the ventilation box are rotatably connected to the air inlet box and the air outlet box, respectively. A spiral blade is fixed inside the ventilation box. A rotating roller is rotatably connected to the side wall of the second support facing the molding chamber. A drive motor that drives the rotating roller is installed on the side wall of the second support. A drive gear is fixed on the circumferential side wall of the rotating roller. A driven gear that meshes with the drive gear is fixed on the circumferential side wall of the ventilation box.

[0010] By adopting the above technical solution, the drive motor starts to rotate the roller, and the roller rotates the ventilation box through the drive gear and the driven gear. The ventilation box accelerates the circulation efficiency of cold air through the spiral blades, thereby achieving the effect of improving the pre-cooling efficiency.

[0011] Optionally, multiple water tanks are arranged around the periphery of the molding chamber, and the water tanks are evenly spaced around the central axis of the molding chamber. A chiller is installed on one side of the molding chamber. A water inlet pipe is connected between the chiller and the water tanks, and a water outlet pipe is connected between the molding chamber and the chiller. A water passage block is installed between the water tanks and the molding chamber. A water passage groove is opened in the water passage block, which passes through the end faces of both sides of the water passage block and connects the water tanks and the molding chamber. A baffle is installed inside the water passage groove. Two transmission rods are fixed on the side wall of one side of the baffle. The two transmission rods are respectively located at both ends of the baffle. A transmission assembly for driving the transmission rods is installed between the precooling pipe and the water passage block.

[0012] By adopting the above technical solution, the rotation of the ventilation box causes the baffles to open and close sequentially through the transmission component, thereby continuously changing the water inlet position, reducing the temperature gradient of the cooling water in the molding cavity, and thus uniformly cooling the molten raw material, achieving the effect of improving cooling quality.

[0013] Optionally, the transmission assembly includes a trigger rod, a turntable, a fixed rod, and an arc-shaped rod. The number of trigger rods is the same as the number of water-passing blocks and corresponds one-to-one. The trigger rod is set inside the side wall of the water-passing block facing the pre-cooling pipe and the two are slidably connected. A linkage assembly is provided between the trigger rod and the two transmission rods to drive the two transmission rods to move synchronously. A reset plate is fixed to the circumferential side wall of the trigger rod on the outside of the water-passing block. A reset spring is fixed between the reset plate and the water-passing block. The turntable is fixed to the circumferential side wall of the ventilation box. The fixed rod is fixed to the side wall of the turntable away from the ventilation box. The arc-shaped rod is fixed to the end of the fixed rod away from the turntable. An elastic assembly is provided between the transmission rod and the water-passing block to drive the transmission rod to reset.

[0014] By adopting the above technical solution, the rotation of the ventilation box causes the turntable to rotate. The turntable, through a fixed rod, causes the arc-shaped rod to press against the trigger rod. The trigger rod, through a linkage assembly, causes two transmission rods to press against the baffle. The baffle, under pressure, detaches from the water-passing block, thereby opening the water-passing groove and allowing cooling water to flow from the water injection tank into the molding chamber. When the turntable, through the fixed rod, moves the arc-shaped rod away from the trigger rod that was just pressed, the return spring releases its elastic force, which, through the return plate, resets the trigger rod. Through this structure, the effect of the baffle opening and closing sequentially is achieved.

[0015] Optionally, the linkage assembly includes a linkage rod and a trigger block. The linkage rod and the trigger rod are fixedly connected at the end of the water channel. There are two trigger blocks. The two trigger blocks are fixed on the side wall of the linkage rod facing the transmission rod, and the trigger blocks correspond one-to-one with the transmission rod. The end of the trigger block away from the transmission rod has an inclined surface.

[0016] By adopting the above technical solution, when the arc-shaped rod presses the trigger rod, the trigger rod causes the linkage rod to move. The movement of the linkage rod brings the trigger block closer to the transmission rod, thereby pressing the transmission rod. When the trigger rod resets, it moves the trigger block away from the transmission rod via the linkage rod. Through this structure, the synchronous movement of the two transmission rods is achieved.

[0017] Optionally, the elastic component includes a fixed plate, a movable plate, and a telescopic spring. The movable plate is fixed on the circumferential side wall of the transmission rod, the fixed plate is disposed above the movable plate, one side of the fixed plate is fixedly connected to the water-passing block, and the telescopic spring is fixed between the fixed plate and the movable plate.

[0018] By adopting the above technical solution, when the trigger block presses against the transmission rod, the transmission rod moves the moving plate closer to the fixed plate, and the moving plate compresses the telescopic spring; when the trigger block moves away from the transmission rod, the telescopic spring releases its elastic force, causing the moving plate to move away from the fixed plate, thereby the transmission rod causes the baffle to close the water passage. This structure achieves the effect of automatic baffle reset.

[0019] Optionally, the sidewalls of the fixed plate and the movable plate are respectively provided with a first through hole and a second through hole.

[0020] By adopting the above technical solution, after the baffle is separated from the water block, the cooling water enters the water tank. At this time, the cooling water can pass through the first through hole and the second through hole, thereby reducing the obstruction to the cooling water.

[0021] Optionally, the ventilation box has a plurality of first balls spherically hinged to the end face of the ventilation box facing the air inlet box. The first balls are arranged around the central axis of the ventilation box, and the end face of the air inlet box facing the ventilation box has a first groove that is adapted to the rolling of the first balls.

[0022] By adopting the above technical solution, the rotation of the ventilation box causes the first ball to roll along the first groove, thereby reducing the friction between the ventilation box and the air inlet box and achieving the effect of smooth rotation of the ventilation box.

[0023] Optionally, the ventilation box has a plurality of second balls spherically hinged to the end face facing the air outlet box. The second balls are arranged around the central axis of the ventilation box, and the end face facing the air outlet box has a second rolling groove that is adapted to the rolling of the second balls.

[0024] By adopting the above technical solution, the rotation of the ventilation box causes the second ball to roll along the second groove, thereby reducing the friction between the ventilation box and the air outlet box and achieving the effect of smooth rotation of the ventilation box.

[0025] Optionally, a pressure pump is installed on the wall of the water inlet pipe.

[0026] By adopting the above technical solution, the pressure pump increases the pressure of the cooling water, thereby achieving the effect of sufficient cooling water power.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. Cold air is introduced into the ventilation box to pre-cool the molten material passing through the pre-cooling pipe. After pre-cooling, the molten material enters the molding chamber for cooling and solidification. This structure shortens the cooling and solidification time, thereby improving cooling efficiency.

[0029] 2. The rotation of the ventilation box accelerates the circulation efficiency of the cold air by the spiral blades, thereby improving the pre-cooling efficiency;

[0030] 3. The water tank is opened and closed in sequence, constantly changing the inlet position of the cooling water, thereby reducing the temperature gradient in the molding cavity and achieving uniform cooling of the molten raw material. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a sewage pipe cooling and forming device according to an embodiment of this application;

[0032] Figure 2 This is a structural schematic diagram illustrating the movement mode of the ventilation box according to an embodiment of this application;

[0033] Figure 3 This is a cross-sectional view of an embodiment of this application illustrating the connection method between the ventilation box and the air outlet box and the air inlet box, respectively;

[0034] Figure 4 yes Figure 3 A magnified view of part A in the middle;

[0035] Figure 5 yes Figure 3A magnified view of part B in the middle section;

[0036] Figure 6 This is a partial schematic diagram illustrating the movement of the trigger lever in an embodiment of this application;

[0037] Figure 7 This is a partial cross-sectional view of an embodiment of the present application, illustrating the internal structure of the water tank;

[0038] Figure 8 yes Figure 7 A magnified view of part C in the diagram.

[0039] In the diagram, 1. Molding chamber; 11. First support; 2. Pre-cooling pipe; 21. Air inlet box; 211. Air inlet; 212. First roller groove; 22. Air outlet box; 221. Return air outlet; 222. Second roller groove; 23. Ventilation box; 231. Air inlet; 232. Air outlet; 233. Spiral blade; 234. Driven gear; 235. First ball bearing; 236. Second ball bearing; 3. Second support; 31. Rotary roller; 311. Drive gear; 32. Drive motor; 4. Circulating air cooler; 41. Air inlet pipe; 42. Air outlet pipe; 5. Water injection. 51. Water inlet block; 511. Water inlet trough; 512. Baffle; 5121. Transmission rod; 6. Chiller; 61. Inlet pipe; 611. Pressure pump; 62. Outlet pipe; 7. Transmission assembly; 71. Trigger rod; 711. Reset plate; 712. Reset spring; 72. Turntable; 73. Fixed rod; 74. Arc rod; 8. Linkage assembly; 81. Linkage rod; 82. Trigger block; 821. Inclined surface; 9. Elastic assembly; 91. Fixed plate; 911. First through hole; 92. Moving plate; 921. Second through hole; 93. Telescopic spring. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0041] This application discloses a sewage pipe cooling and forming device.

[0042] refer to Figure 1 and Figure 2A sewage pipe cooling and forming device includes a forming chamber 1. A precooling pipe 2 is fixedly installed at one end of the forming chamber 1 and is connected to the forming chamber 1. A first support 11 is fixedly installed between the end of the forming chamber 1 away from the precooling pipe 2 and the ground. An air inlet box 21 is fitted onto the end of the precooling pipe 2 away from the forming chamber 1 and the two are fixedly connected. A second support 3 is fixedly installed between the air inlet box 21 and the ground. An air outlet box 22 is fitted onto the other end of the precooling pipe 2 and the two are fixedly connected. A ventilation box 23 is provided between the air inlet box 21 and the air outlet box 22. The ventilation box 23 is fitted onto the circumferential side wall of the precooling pipe 2, and the end faces of the two ends of the ventilation box 23 are connected to the air inlet box 21 and the air outlet box 22, respectively.

[0043] The molten raw material is first introduced into the precooling pipe 2. At this time, the cold air in the air inlet box 21 enters the ventilation box 23. Then the cold air enters the air outlet box 22 through the ventilation box 23. During the process of the cold air passing through the ventilation box 23, it carries away some of the heat of the molten raw material in the precooling pipe 2. The molten raw material that has been precooled enters the molding chamber 1 to cool and solidify.

[0044] refer to Figure 1 A circulating air cooler 4 is provided on one side of the precooling pipe 2. An air inlet pipe 41 is fixed between the circulating air cooler 4 and the air inlet box 21. The air inlet pipe 41 connects the air inlet box 21 and the circulating air cooler 4. An air outlet pipe 42 is fixed between the circulating air cooler 4 and the air outlet box 22. The air outlet pipe 42 connects the air outlet box 22 and the circulating air cooler 4.

[0045] refer to Figure 3 An air inlet 211 is provided in a ring on the end face of the air inlet box 21 facing the ventilation box 23. An air inlet 231 is provided in a ring on the end face of the ventilation box 23 facing the air inlet box 21, and the air inlet 231 is aligned with the air inlet 211. A return air inlet 221 is provided in a ring on the end face of the air outlet box 22 facing the ventilation box 23. An air outlet 232 is provided in a ring on the end face of the ventilation box 23 facing the air outlet box 22, and the return air inlet 221 is aligned with the air outlet 232.

[0046] The circulating air cooler 4 blows out cold air, which enters the air inlet box 21 through the air inlet pipe 41. Then, the cold air passes through the air injection port 211 and the air inlet 231 and enters the ventilation box 23. The cold air then passes through the air outlet 232 and the return air inlet 221 and enters the air outlet box 22. Finally, the cold air returns to the circulating air cooler 4 through the air outlet pipe 42.

[0047] refer to Figure 3 and Figure 4 The ventilation box 23 has a plurality of first balls 235 ball-jointed on the end face facing the air inlet box 21. The first balls 235 are evenly spaced around the central axis of the ventilation box 23. The end face of the air inlet box 21 facing the ventilation box 23 has a first groove 212 circumferentially formed to match the rolling of the first balls 235.

[0048] refer to Figure 3 and Figure 5 The ventilation box 23 has multiple second balls 236 ball joints on the end face facing the air outlet box 22. The second balls 236 are evenly spaced around the central axis of the ventilation box 23. The end face of the air outlet box 22 facing the ventilation box 23 has a second rolling groove 222 that is adapted to the rolling of the second balls 236.

[0049] refer to Figure 2 and Figure 3 A rotating roller 31 is rotatably connected to the side wall of the ventilation box 23 of the second support 3. The rotating roller 31 is set in the horizontal direction. A drive motor 32 that drives the rotating roller 31 to rotate is installed on the side wall of the second support 3 away from the rotating roller 31. A drive gear 311 is fixed at the end of the rotating roller 31 away from the second support 3. A driven gear 234 that meshes with the drive gear 311 is fixed on the circumferential side wall of the ventilation box 23. A spiral blade 233 is fixed inside the ventilation box 23.

[0050] The drive motor 32 starts and drives the rotating roller 31 to rotate. The rotating roller 31 drives the drive gear 311 to rotate. The drive gear 311 drives the driven gear 234 to rotate. The driven gear 234 drives the ventilation box 23 to rotate. The ventilation box 23 drives the first ball 235 and the second ball 236 to roll along the first groove 212 and the second groove 222 respectively. At the same time, the ventilation box 23 drives the threaded blades to rotate.

[0051] refer to Figure 1 and Figure 6 Multiple water injection tanks 5 are evenly spaced around the central axis of the molding chamber 1, and a water passage block 51 is fixed between the water injection tanks 5 and the molding chamber 1.

[0052] refer to Figure 6 and Figure 7 A water channel 511 is provided inside the water channel block 51. The water channel 511 passes through the end faces of both sides of the water channel block 51 and connects the molding chamber 1 and the water injection tank 5. A baffle 512 is provided inside the water channel 511.

[0053] refer to Figure 1 A chiller 6 is provided on one side of the molding chamber 1. A water inlet pipe 61 is fixed between the chiller 6 and the water injection tank 5. The water inlet pipe 61 connects the water injection tank 5 and the chiller 6. A pressure pump 611 is installed on the wall of the water inlet pipe 61. A water outlet pipe 62 is fixed between the chiller 6 and the molding chamber 1. The water outlet pipe 62 connects the molding chamber 1 and the chiller 6.

[0054] Cold water from the chiller 6 enters the inlet pipe 61, and after being pressurized by the pressure pump 611, it flows into the water tank 5. After the baffle 512 moves and opens the water trough 511, the cold water in the water tank 5 flows into the molding chamber 1. Finally, the cold water in the molding chamber 1 returns to the chiller 6 through the outlet pipe 62 for circulation.

[0055] refer to Figure 7 and Figure 8 Two transmission rods 5121 are fixedly installed on the side wall of the baffle 512 away from the water tank 5. The two transmission rods 5121 are respectively set at both ends of the baffle 512. An elastic component 9 is provided between the two transmission rods 5121 and the inner wall of the water block 51 at the water channel 511. The elastic component 9 includes a fixed plate 91, a movable plate 92 and a telescopic spring 93. The movable plate 92 is sleeved on the transmission rod 5121 and the two are fixedly connected. The fixed plate 91 is set on the side of the movable plate 92 facing the baffle 512. One side of the fixed plate 91 is fixedly connected to the inner wall of the water block 51 at the water channel 511. Several first through holes 911 and second through holes 921 are respectively opened through the opposite side walls of the fixed plate 91 and the movable plate 92. The telescopic spring 93 is fixed between the fixed plate 91 and the movable plate 92.

[0056] When the transmission rod 5121 is in a squeezed state, the transmission rod 5121 drives the baffle 512 to disengage from the water passage block 51, thereby opening the water passage trough 511. At the same time, the transmission rod 5121 drives the moving plate 92 to squeeze the telescopic spring 93. When the transmission rod 5121 is out of the squeezed state, the telescopic spring 93 releases its elastic force to drive the moving plate 92 to reset, and the moving plate 92 drives the transmission rod 5121 to reset.

[0057] refer to Figure 1 and Figure 6 A transmission assembly 7 is provided between the ventilation box 23 and the water block 51. The transmission assembly 7 includes a turntable 72, a fixed rod 73 and an arc rod 74. The turntable 72 is sleeved on the end of the ventilation box 23 near the molding chamber 1 and is fixedly connected to the ventilation box 23. The fixed rod 73 is fixed on the side wall of the turntable 72 away from the ventilation box 23, and the arc rod 74 is fixed on the end of the fixed rod 73 away from the turntable 72.

[0058] refer to Figure 6 and Figure 7 The transmission assembly 7 also includes a trigger rod 71. The number of trigger rods 71 ​​is the same as the number of water-passing blocks 51 and they correspond one-to-one. The trigger rods 71 ​​are set inside the side wall of the water-passing block 51 facing the pre-cooling pipe 2 and are slidably connected to each other. A reset plate 711 is fixed on the circumferential side wall of the trigger rod 71 outside the water-passing block 51. A reset spring 712 is fixed between the reset plate 711 and the water-passing block 51. The end of the trigger rod 71 near the ventilation box 23 is set to be elliptical.

[0059] refer to Figure 7 and Figure 8The trigger rod 71 has a linkage component 8 at its end inside the water passage 511. The linkage component 8 includes a linkage rod 81 and a trigger block 82. The linkage rod 81 is fixedly connected to the end of the trigger rod 71 that extends into the water passage 511, and the linkage rod 81 is arranged in a horizontal direction. There are two trigger blocks 82. The two trigger blocks 82 are fixed on the side wall of the linkage rod 81 facing the transmission rod 5121, and the trigger blocks 82 correspond one-to-one with the transmission rod 5121. The end of the trigger block 82 away from the transmission rod 5121 has an inclined surface 821.

[0060] The rotation of the ventilation box 23 drives the turntable 72 to rotate, which in turn drives the fixed rod 73 to rotate. The fixed rod 73 then drives the arc-shaped rod 74 to rotate. During rotation, the arc-shaped rod 74 sequentially presses against each trigger rod 71. After disengaging from the previous trigger rod 71, the arc-shaped rod 74 presses against the next trigger rod 71. When the arc-shaped rod 74 presses against the trigger rod 71, the trigger rod 71 drives the reset plate 711 to press against the reset spring 712. Simultaneously, the trigger rod 71 drives the linkage rod 81 to move, which in turn drives the trigger block 82 to move closer to the transmission rod 5121. Thus, the trigger rod 71 presses against the transmission rod 5121 through the inclined surface 821. When the arc-shaped rod 74 disengages from the trigger rod 71, the reset spring 712 releases its elastic force, causing the reset plate 711 to reset. The reset plate 711 then drives the trigger rod 71 to reset, which in turn drives the linkage rod 81 to reset. The linkage rod 81 then drives the trigger block 82 to reset, thus moving the trigger block 82 away from the transmission rod 5121.

[0061] The implementation principle of the sewage pipe cooling and forming device in this embodiment is as follows: molten raw material is first introduced into the precooling pipe 2 for precooling treatment, and after precooling, it is introduced into the forming chamber 1 for cooling and shaping. During precooling, the drive motor 32 starts and drives the rotating roller 31 to rotate. The rotating roller 31 drives the ventilation box 23 to rotate the threaded blades through the driven gear 234 and the driving gear 311, thereby improving the circulation efficiency of the cold air. During cooling and shaping, the rotation of the ventilation box 23 drives the turntable 72 to rotate. The turntable 72 sequentially presses the trigger rod 71 through the fixed rod 73 and the arc rod 74, thereby sequentially opening and closing each water channel and continuously changing the water inlet position of the cooling water. Through the above structure, the cooling efficiency is improved.

[0062] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sewage pipe cooling and forming device, comprising a forming chamber (1), wherein a first support (11) is fixedly provided between one end of the forming chamber (1) and the ground, characterized in that: A precooling pipe (2) is fixedly installed at one end of the molding chamber (1) away from the first support (11). An air inlet box (21) and an air outlet box (22) are fixedly installed on the circumferential sidewalls at both ends of the precooling pipe (2). A second support (3) is fixed between the air inlet box (21) and the ground. A ventilation box (23) is provided between the air inlet box (21) and the air outlet box (22). The ventilation box (23) is fitted inside the circumferential sidewall of the precooling pipe (2). An air inlet (231) and an air outlet are respectively circumferentially opened on the end faces of the ventilation box (23). The air inlet (232), the air inlet box (21) and the air outlet box (22) are respectively provided with an air inlet (211) and an air return port (221) through the opposite side walls. The air inlet (231) and the air inlet (211) are aligned, and the air outlet (232) and the air return port (221) are aligned. A circulating air cooler (4) is provided on one side of the precooling pipe (2). An air inlet pipe (41) is fixed between the circulating air cooler (4) and the air inlet box (21), and an air outlet pipe (42) is fixed between the circulating air cooler (4) and the air outlet box (22). The end faces of the ventilation box (23) are rotatably connected to the air inlet box (21) and the air outlet box (22) respectively. The ventilation box (23) is fixedly provided with spiral blades (233). The second support (3) is rotatably connected to the side wall of the molding chamber (1) and a rotating roller (31) is installed on the side wall of the second support (3). A drive motor (32) that drives the rotating roller (31) to rotate is installed on the side wall of the second support (3). A drive gear (311) is fixedly provided on the circumferential side wall of the rotating roller (31). A driven gear (234) that meshes with the drive gear (311) is fixedly provided on the circumferential side wall of the ventilation box (23). Multiple water tanks (5) are arranged around the periphery of the molding chamber (1). The water tanks (5) are evenly spaced around the central axis of the molding chamber (1). A chiller (6) is arranged on one side of the molding chamber (1). A water inlet pipe (61) is connected between the chiller (6) and the water tanks (5). A water outlet pipe (62) is connected between the molding chamber (1) and the chiller (6). A water passage block (51) is arranged between the water tanks (5) and the molding chamber (1). A water channel is provided inside the water passage block (51), which passes through the end faces of both sides of the water passage block (51) and connects the water injection tank (5) and the molding chamber (1). A baffle (512) is provided inside the water passage block. Two transmission rods (5121) are fixed on one side wall of the baffle (512). The two transmission rods (5121) are respectively set at both ends of the baffle (512). A transmission assembly (7) that drives the transmission rods (5121) to move is provided between the precooling pipe (2) and the water passage block (51).

2. The sewage pipe cooling and forming device according to claim 1, characterized in that: The transmission assembly (7) includes a trigger rod (71), a turntable (72), a fixed rod (73), and an arc-shaped rod (74). The number of trigger rods (71) is the same as the number of water-passing blocks (51) and they correspond one-to-one. The trigger rods (71) are set inside the side wall of the water-passing block (51) facing the pre-cooling pipe (2) and are slidably connected to each other. A linkage assembly (8) is provided between the trigger rods (71) and the two transmission rods (5121) to drive the two transmission rods (5121) to move synchronously. The trigger rods (71) are located in the water-passing block (51). A reset plate (711) is fixed on the outer circumferential sidewall. A reset spring (712) is fixed between the reset plate (711) and the water-passing block (51). The turntable (72) is fixed on the circumferential sidewall of the ventilation box (23). A fixing rod (73) is fixed on the sidewall of the turntable (72) away from the ventilation box (23). An arc-shaped rod (74) is fixed on the end of the fixing rod (73) away from the turntable (72). An elastic component (9) for driving the transmission rod (5121) to reset is provided between the transmission rod (5121) and the water-passing block (51).

3. The sewage pipe cooling and forming device according to claim 2, characterized in that: The linkage assembly (8) includes a linkage rod (81) and a trigger block (82). The linkage rod (81) and the trigger rod (71) are fixedly connected at the end of the water tank (511). There are two trigger blocks (82). The two trigger blocks (82) are fixed on the side wall of the linkage rod (81) facing the transmission rod (5121), and the trigger blocks (82) correspond one-to-one with the transmission rod (5121). An inclined surface (821) is opened at the end of the trigger block (82) away from the transmission rod (5121).

4. The sewage pipe cooling and forming device according to claim 2, characterized in that: The elastic component (9) includes a fixed plate (91), a movable plate (92), and a telescopic spring (93). The movable plate (92) is fixed on the circumferential side wall of the transmission rod (5121). The fixed plate (91) is located above the movable plate (92). One side of the fixed plate (91) is fixedly connected to the water passage block (51). The telescopic spring (93) is fixed between the fixed plate (91) and the movable plate (92).

5. The sewage pipe cooling and forming device according to claim 4, characterized in that: The fixed plate (91) and the movable plate (92) have a first through hole (911) and a second through hole (921) respectively through their opposite side walls.

6. The sewage pipe cooling and forming device according to claim 1, characterized in that: The ventilation box (23) has a plurality of first balls (235) ball-jointed on the end face facing the air inlet box (21). The first balls (235) are arranged around the central axis of the ventilation box (23). The end face of the air inlet box (21) facing the ventilation box (23) has a first groove (212) circumferentially opened to match the rolling of the first balls (235).

7. The sewage pipe cooling and forming device according to claim 1, characterized in that: The ventilation box (23) has a plurality of second balls (236) ball-jointed on the end face facing the air outlet box (22). The second balls (236) are arranged around the central axis of the ventilation box (23). The end face of the air outlet box (22) facing the ventilation box (23) is provided with a second rolling groove (222) that is adapted to the rolling of the second balls (236).

8. The sewage pipe cooling and forming device according to claim 1, characterized in that: A pressure pump (611) is installed on the wall of the water inlet pipe (61).

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