A cooling device for an extruder capable of automatically cleaning scale

Abstract

The application relates to a cooling device for an extruder capable of automatically cleaning water scale, and belongs to the field of extrusion equipment. The cooling device comprises a cooling tank, a side water communication pipe arranged on two inner side walls of the cooling tank, a side branch pipe with one end connected with the side water communication pipe and the other end extending towards a plastic part, a clamping assembly one hinged to the inner side wall of the cooling tank, a driving tooth ring sleeved on the side water communication pipe, a driving gear rotatably connected with the inner wall of the cooling tank, the driving gear and the driving tooth ring being in mesh with each other, a cleaning water tank, a cleaning water pipe with one end detachably connected with and communicated with the cleaning water tank and the other end detachably connected with and communicated with the side water communication pipe, and a two-way water pump fixed on the side of the cleaning water tank and used for conveying the water scale cleaning agent formed in the cleaning water tank into the side water communication pipe and conveying the cleaned sewage from the side water communication pipe into the cleaning water tank. The application has the effect of conveniently cleaning the water scale and improving the cooling effect of the plastic part.

Description

Technical Field

[0001] This application relates to the field of extrusion equipment, and more particularly to a cooling device for extruders that can automatically clean scale. Background Technology

[0002] An extruder is an important plastic processing equipment, often used to produce plastic products such as refrigerator seals. Its working principle is to feed solid plastic granules or powder into the machine through a hopper, and then the screw rotates to heat and melt the plastic. The molten plastic is pushed into the extrusion head and extruded through the opening of the die to form the desired product shape.

[0003] Typically, a cooling device and a cutting device are sequentially installed at the rear end of an extruder. The strip-shaped plastic part extruded from the mold is first transferred to the cooling device for cooling, and then enters the cutting device to cut the extruded plastic part into a preset size. The cooling device is usually a long, narrow cooling tank. The extruded plastic part enters from one end of the cooling tank and exits from the other. A horizontally arranged connecting water pipe is installed on the two opposite inner walls of the cooling tank. The axis of the connecting water pipe is along the length of the cooling tank, and several spray heads are evenly distributed along the axis of the connecting water pipe. When the plastic part is transported along the length of the cooling tank, a slow stream of water is sprayed onto the surface of the plastic part through the spray heads, thereby cooling the plastic part.

[0004] Regarding the aforementioned technologies, the inventors believe that during the process of water flowing through the connecting pipes and spray heads onto the surface of the plastic parts, dissolved salts in the water will precipitate and deposit on the inner wall of the pipes, gradually forming scale. The accumulation of scale will reduce the inner diameter of the pipes, affecting the smooth flow of water, reducing the water flow rate and pressure, and thus affecting the cooling effect of the plastic parts. Summary of the Invention

[0005] In order to facilitate the cleaning of scale and thus improve the cooling effect of plastic parts, this application provides a cooling device for extruders that can automatically clean scale.

[0006] The cooling device for extruders that can automatically clean scale, as provided in this application, adopts the following technical solution:

[0007] A cooling device for an extruder that can automatically clean scale includes:

[0008] A cooling tank is configured as a tank body, the length of which is arranged along the transport direction of the plastic parts. One end of the cooling tank has an inlet and the other end has an outlet.

[0009] Two water pipes are connected to the sides and are respectively installed on the two opposite inner walls of the cooling tank, with their axial direction along the length of the cooling tank.

[0010] Side branch pipes are evenly distributed along the axial direction of the side connecting water pipes. One end of the branch pipe is connected to the side connecting water pipe, and the other end extends towards the plastic parts.

[0011] Clamping component one is hinged to the inner wall of the cooling tank to support the side-connecting water pipe;

[0012] A drive gear ring is fitted onto one end of the side-connecting water pipe and fixedly connected to the side-connecting water pipe.

[0013] A drive gear is rotatably connected to the inner wall of the cooling tank. A drive servo motor is fixedly installed on the inner wall of the cooling tank at the position corresponding to the drive gear. The drive servo motor is used to drive the drive gear to rotate. The drive gear meshes with the side wall of the drive gear ring.

[0014] The cleaning water tank has a water inlet and a feeding port on the top, and a stirring rod is connected to the inside by a rotating mechanism.

[0015] The cleaning water pipe has one end detachably connected to the cleaning water tank and the other end detachably connected to the side water pipe.

[0016] A two-way water pump is fixed to the side of the cleaning water tank. It is used to transport the scale cleaning agent formed in the cleaning water tank to the side connecting water pipe, and to pump the wastewater after cleaning from the side connecting water pipe back into the cleaning water tank.

[0017] By adopting the above technical solution, the plastic parts are transported from the feed port into the cooling tank during processing and are transported out of the cooling tank from the discharge port. During the transportation of the plastic parts in the cooling tank, water enters from the side water pipe and is sprayed onto the surface of the plastic parts through the side branch pipe to cool the plastic parts.

[0018] To prevent scale buildup in the side connecting water pipes and side branch pipes, which would reduce the cooling effect of the plastic parts, the cooling system will regularly clean the side connecting water pipes and side branch pipes.

[0019] The cleaning process includes the following steps: First, by rotating the output shaft of the drive servo motor, the drive gear is rotated, which in turn drives the drive gear ring to rotate. The drive gear ring drives the side connecting water pipe to rotate until the end of the side branch pipe away from the side connecting water pipe tilts upward, so as to prevent the scale cleaner from overflowing from the end of the side branch pipe when it is delivered to the side connecting water pipe and the side branch pipe later.

[0020] Next, powdered cleaning agent is added to the feeding port, and purified water is supplied to the cleaning tank through the inlet. A stirring rod mixes the purified water and powdered cleaning agent to form a liquid scale remover. A two-way water pump transports the formed scale remover to the side connecting water pipe and the side branch pipe. After standing for a period of time, the cleaned wastewater is pumped from the side connecting water pipe along the cleaning water pipe back to the cleaning tank using the two-way water pump. Finally, both ends of the cleaning water pipe are disconnected from the cleaning tank and the side connecting water pipe, and the cleaning tank is transported to the sewage discharge point for wastewater treatment.

[0021] In addition, the side connecting water pipe can be connected and disconnected from the cooling tank by the clamping assembly, which makes it easy to remove the side connecting water pipe from the cooling tank for inspection.

[0022] By driving the servo motor to rotate the drive gear, which in turn drives the side water pipe to rotate, it can also be used to adjust the angle of the side branch pipe spraying water onto the plastic part when cooling the plastic part.

[0023] In summary, by regularly cleaning the scale inside the side connecting water pipes and side branch pipes using the above technical solutions, the accumulation of scale can be reduced, ensuring the unobstructed flow of the side connecting water pipes and side branch pipes, thereby improving the cooling effect of the plastic parts.

[0024] Optional, including:

[0025] A water pipe is connected to the bottom and installed on the bottom wall of the cooling tank, with its axis running along the length of the cooling tank.

[0026] Bottom branch pipes are evenly distributed along the axis of the bottom connecting water pipe. One end of the branch pipe is connected to the side connecting water pipe, and the other end extends towards the plastic part.

[0027] The second clamping component is fixed to the bottom wall of the cooling tank to support the bottom connecting water pipe.

[0028] By adopting the above technical solution, water flows through the bottom connecting pipe and sprays upwards onto the plastic part along the bottom branch pipe, applying a certain force to the bottom wall of the plastic part, thereby providing some support. This reduces the downward bending of the plastic part caused by the downward force applied to the plastic part by only the side branch pipe spraying from top to bottom in the traditional technology. Furthermore, the above technical solution uses water flow to support the plastic part, solving the problem of insufficient cooling of the bottom of the plastic part caused by the use of pads or other supports in the traditional technology. It can achieve both support and simultaneous cooling of the bottom of the plastic part.

[0029] Optionally, the end of the side branch pipe away from the side-connecting water pipe is inclined toward the transport direction of the plastic part;

[0030] The end of the bottom branch pipe away from the bottom connecting water pipe is inclined in the direction of transporting the plastic parts.

[0031] By adopting the above technical solution, the water jets from the side branch pipes and bottom branch pipes can drive the plastic parts towards the discharge port to a certain extent, thereby playing a certain auxiliary role in the transportation of the plastic parts.

[0032] Optional, including:

[0033] The circulating water tank has an opening on the top side and is fixed directly below the cooling tank. The bottom of the cooling tank has a connecting port, through which water in the cooling tank enters the circulating water tank.

[0034] A circulating water tank is used to store clean cooling water;

[0035] The water inlet pipe is connected to the circulating water tank at one end and to the circulating water trough at the other end.

[0036] The circulating water pipe is connected to the circulating water tank at one end and to the side water pipe at the other end.

[0037] The booster pump is fixed on the side wall of the circulating water tank at the position corresponding to the circulating water pipe, and is used to transport the water in the circulating water tank outward along the circulating water pipe.

[0038] By adopting the above technical solution, the water sprayed onto the surface of the plastic part detaches from the surface of the plastic part and enters the circulating water tank through the connecting port. Since the circulating water tank has an opening at the top, it is convenient for the water entering the circulating water tank to dissipate heat.

[0039] The water then flows into the circulating water tank through the inlet pipe for storage, and then a booster pump provides power for the water flow. This facilitates the transportation of the water stored in the circulating water tank to the side connecting water pipe and the bottom connecting water pipe through the circulating water pipe, thereby facilitating the recycling of cooling water and saving water resources.

[0040] Optionally, a solenoid valve is fixedly installed at the position of the side-connecting water pipe corresponding to the cleaning water pipe;

[0041] A second solenoid valve is fixedly installed at the position of the circulating water pipe corresponding to the side connecting water pipe.

[0042] By adopting the above technical solution, when spraying plastic parts, solenoid valve one is closed and solenoid valve two is opened, allowing water to flow from the circulating water pipe into the side connecting water pipe to spray the plastic parts; when spraying the side connecting water pipe and the side branch pipe, solenoid valve one is opened and solenoid valve two is closed, allowing scale remover to flow from the cleaning water pipe into the side branch pipe for cleaning. The coordinated use of solenoid valves one and two facilitates the control of the flow between the circulating water pipe, the cleaning water pipe, and the side connecting water pipe.

[0043] Optional, including:

[0044] The limiting ring is fixed to the side wall of the side branch pipe;

[0045] The baffle is configured in a fan shape and is rotatably connected to the end of the side branch pipe, with its side sliding along the inner side of the limiting ring.

[0046] The second drive servo motor is fixed to the side branch pipe and is used to drive the baffle to rotate.

[0047] By adopting the above technical solution, when it is necessary to clean the side connecting water pipe and the side branch pipe, the output shaft of the drive servo motor 2 is rotated, which in turn drives the baffle to rotate until the baffle completely blocks the port of the side branch pipe. This further prevents the cleaning agent from flowing out from the end of the side branch pipe when cleaning the side connecting water pipe and the side branch pipe, allowing the cleaning agent to stand in the side connecting water pipe and the side branch pipe for a certain period of time, giving the cleaning agent sufficient reaction time and improving the cleaning effect.

[0048] Optionally, the clamping assembly one includes:

[0049] The mounting bracket is hinged at one end to the inner wall of the cooling tank, and at the other end extends horizontally toward the middle of the cooling tank.

[0050] The push block slides along the length of the mounting bracket;

[0051] The connecting rod is hinged at its end to the push block;

[0052] The chuck has one end hinged to the end of the connecting rod away from the push block, and the other end is used to clamp the side connecting water pipe. The middle part is hinged to the end of the mounting bracket.

[0053] The cylinder is used to provide power for the sliding of the pusher block.

[0054] By adopting the above technical solution, the piston rod of the pushing cylinder is extended, which drives the push block to move closer to the center of the cooling tank. The connecting rod drives the two claws to move away from each other around the hinge point on the mounting bracket, while the two claws away from the connecting rod move towards each other around the hinge point on the mounting bracket, thus clamping the side connecting water pipe.

[0055] The piston rod of the push cylinder retracts, causing the push block to move away from the center of the cooling tank. Through the connecting rod, the two claws move towards each other around the hinge point on the mounting bracket at the end of the connecting rod, while the corresponding two claws away from the connecting rod move away from the hinge point on the mounting bracket, making it easier for the side water pipe to detach from the claws.

[0056] In summary, the clamping assembly facilitates the connection and disconnection of the side-connecting water pipe.

[0057] Optionally, a filter screen may be detachably connected to the circulating water tank at the position corresponding to the water inlet pipe.

[0058] By adopting the above technical solution, the filter screen can filter the water entering the circulating water tank, blocking large particulate impurities in the water, making the water entering the circulating water tank cleaner.

[0059] Optionally, a cooling fan is fixedly installed at the bottom of the cooling tank.

[0060] By adopting the above technical solution, the cooling fan blows cold air into the circulating water tank, which can accelerate the cooling speed of the water in the circulating water tank. Attached Figure Description

[0061] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0062] Figure 2 This is a schematic diagram in the embodiment to highlight the bottom connecting water pipe.

[0063] Figure 3 This is a schematic diagram shown in the embodiment to highlight a specific structure of the clamping assembly.

[0064] Figure 4 yes Figure 2 Enlarged view of part A in the image.

[0065] Figure 5 This is a cross-sectional view taken in the embodiment to highlight the connection port.

[0066] Figure 6 yes Figure 2 Enlarged view of part B in the image.

[0067] Figure 7 This is a schematic diagram shown in the embodiment to highlight the water inlet pipe.

[0068] Figure 8 This is a schematic diagram of the circulating water tank in the embodiment.

[0069] Figure 9 This is a schematic diagram of the cleaning water tank in the embodiment.

[0070] Figure 10 yes Figure 5 Enlarged view of section C in the image.

[0071] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Circulating water tank; 21. Support; 22. Drain; 3. Cooling tank; 31. Feed inlet; 32. Discharge outlet; 33. Side connecting water pipe; 331. Side branch pipe; 34. Clamping assembly one; 341. Mounting bracket; 3411. Mounting plate; 3412. Connecting bracket; 3413. Connecting column; 3414. Limiting block; 342. Push cylinder; 343. Push block; 344. Connecting rod; 345. Claw; 35. Hinge seat; 36. Drive gear ring; 36 1. Drive gear; 362. Drive servo motor one; 37. Bottom connecting water pipe; 371. Bottom branch pipe; 38. Clamping assembly two; 381. Support base; 382. Motion clamp; 39. Connecting port; 4. Cooling fan; 5. Circulating water tank; 51. Inlet pipe; 52. Circulating water pipe; 53. Lifting pump; 6. Cleaning water tank; 61. Cleaning water pipe; 62. Two-way water pump; 63. Inlet; 64. Feeding port; 65. Drive motor; 7. Limit ring; 71. Baffle; 72. Drive servo motor two. Detailed Implementation

[0072] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0073] This application discloses a cooling device for an extruder that can automatically clean scale. (See also...) Figure 1 A cooling device for an extruder that can automatically clean scale includes a frame 1. A circulating water tank 2 is fixed to the top of the frame 1. The circulating water tank 2 has an opening on its top side, which flares outward. The length of the circulating water tank 2 is aligned with the transport direction of the plastic parts. A cooling tank 3 is mounted above the circulating water tank 2. The cooling tank 3 is a tank body, and its length is aligned with the transport direction of the plastic parts. A circular inlet 31 is opened at one end of the cooling tank 3, and a circular outlet 32 ​​is opened at the other end. The circles of the inlet 31 and the outlet 32 ​​are on the same horizontal line. During processing, the plastic parts are transported into the cooling tank 3 through the inlet 31 and exited the cooling tank 3 through the outlet 32. A bracket 21 is fixed between the cooling tank 3 and the circulating water tank 2. The bracket 21 is L-shaped. One end of the bracket 21 is fixed to the bottom side wall of the cooling tank 3, and the other end of the bracket 21 is fixed to the bottom wall of the circulating water tank 2. The bracket 21 supports the cooling tank 3 above the circulating water tank 2, so that a certain gap is left between the cooling tank 3 and the circulating water tank 2.

[0074] Reference Figure 2A side-connecting water pipe 33 is provided on each of the two opposite inner sidewalls of the cooling tank 3, and the axis of the side-connecting water pipe 33 is arranged along the length of the cooling tank 3. Several side branch pipes 331 are evenly distributed along the axis of the side-connecting water pipe 33. One end of the side branch pipe 331 is connected to the side-connecting water pipe 33, and the other end of the side branch pipe 331 extends towards the plastic part. The end away from the side-connecting water pipe 33 is inclined downwards, and the conveying direction of the plastic part is also inclined.

[0075] When the plastic parts are transported along the length of the cooling tank 3, water flows through the side connecting water pipes 33 to the side branch pipes 331, and is sprayed onto the plastic parts through the ends of the side branch pipes 331 to cool them. Furthermore, because the side branch pipes 331 are inclined towards the transport direction of the plastic parts, they can to some extent drive the plastic parts towards the discharge port 32, thus providing some assistance in the transport of the plastic parts.

[0076] Reference Figure 2 Several clamping assemblies 34 are hinged to the side wall of the cooling tank 3 at the position corresponding to the side-connecting water pipe 33. The figure shows two sets of clamping assemblies 34 as an example. The specific number can be adjusted according to the actual length of the side-connecting water pipe 33. The clamping assemblies 34 are used to support the side-connecting water pipe 33. A hinge seat 35 is fixedly provided on the side wall of the cooling tank 3 at the position corresponding to each set of clamping assemblies 34.

[0077] Reference Figure 3 The clamping assembly 34 includes a mounting bracket 341, one end of which is hinged to a hinge seat 35, and the other end extends horizontally toward the center of the cooling tank 3. The mounting bracket 341, from the end closest to the cooling tank 3 to the end furthest from the cooling tank 3, sequentially includes an L-shaped mounting plate 3411, a U-shaped connecting bracket 3412, a connecting post 3413, and a limiting block 3414. One end of the mounting plate 3411 is hinged to the hinge seat 35. Both ends of the connecting bracket 3412 are fixed to the other ends of the mounting plate 3411. Both ends of the connecting post 3413 are fixed to the connecting bracket 3412 and the limiting block 3414, respectively, and the axial direction of the connecting post 3413 is parallel to the length direction of the mounting bracket 341.

[0078] Reference Figure 3A pushing cylinder 342 is fixedly mounted on the side wall of the mounting plate 3411. The piston rod of the pushing cylinder 342 passes through the middle position of the end of the mounting plate 3411 and is slidably connected to the mounting plate 3411. A push block 343 is fixedly mounted on the end of the piston rod of the pushing cylinder 342. The push block 343 is located between the connecting frame 3412 and the mounting plate 3411 and slides along the length direction of the mounting frame 341 under the drive of the piston rod of the pushing cylinder 342. Two connecting rods 344 are hinged to the side wall of the push block 343. A pawl 345 is hinged to the end of the connecting rod 344 away from the push block 343. The middle part of the pawl 345 is hinged to both ends of the limiting block 3414. The two pawls 345 are arranged in an arc shape on one side close to each other to match the side connecting pipe.

[0079] The piston rod of the pushing cylinder 342 extends, causing the push block 343 to move closer to the center of the cooling tank 3. This, via the connecting rod 344, causes the two jaws 345 to move away from each other around the hinge point on the mounting bracket 341, while the ends of the two jaws 345 away from the connecting rod move towards each other, clamping the side-connecting water pipe 33. The piston rod of the pushing cylinder 342 retracts, causing the push block 343 to move further away from the center of the cooling tank 3. This, via the connecting rod 344, causes the two jaws 345 to move towards each other around the hinge point on the mounting bracket 341, while the ends of the two jaws 345 away from the connecting rod move away from each other, facilitating the disengagement of the side-connecting water pipe 33 from the jaws 345.

[0080] Reference Figure 4 A drive gear ring 36 is fixedly installed at one end of the connecting water pipe. The drive gear ring 36 is sleeved on one end of the connecting water pipe and is coaxially arranged with the connecting water pipe. A drive gear 361 meshes with the side wall of the drive gear ring 36. The drive gear 361 is rotatably connected to the inner wall of the cooling tank 3. A drive servo motor 362 is fixedly installed on the inner wall of the cooling tank 3 at the position corresponding to the drive gear 361. The drive servo motor 362 is used to drive the drive gear 361 to rotate. The body of the drive servo motor 362 is fixedly installed in the cooling tank 3. The output shaft of the drive servo motor 362 extends horizontally towards the drive gear 361 and is fixedly connected to the middle of the drive gear 361.

[0081] When the side water pipe 33 is driven to rotate, the output shaft of the drive servo motor 362 rotates, which drives the drive gear 361 to rotate, thereby driving the side water pipe 33 to rotate through the drive gear ring 36.

[0082] Reference Figure 5The bottom wall of the cooling tank 3 is provided with a bottom connecting water pipe 37, and the axis of the bottom connecting water pipe 37 is arranged along the length of the cooling tank 3. Several bottom branch pipes 371 are evenly distributed along the axis of the bottom connecting water pipe 37. One end of the bottom branch pipe 371 is connected to the bottom connecting water pipe 37, and the other end of the bottom branch pipe 371 extends towards the plastic part and is inclined towards the transport direction of the plastic part.

[0083] Water flows through the bottom connecting pipe 37 and sprays upwards along the bottom branch pipe 371 onto the plastic part, applying a certain force to the bottom wall of the plastic part and thus providing some support. This reduces the downward bending of the plastic part caused by the downward force applied to the plastic part by only the side branch pipe 331 spraying from top to bottom in the traditional technology. Furthermore, the above technical solution uses water flow to support the plastic part, solving the problem of insufficient cooling of the bottom of the plastic part caused by the use of pads or other supports in the traditional technology. It achieves both support and simultaneous cooling of the bottom of the plastic part. Additionally, the inclination of the bottom branch pipe 371 towards the transport direction of the plastic part provides some assistance in its transportation.

[0084] Reference Figure 6 A plurality of clamping assemblies 38 are fixedly provided on the bottom wall of the cooling tank 3. The clamping assemblies are used to support the bottom connecting water pipe 37. The clamping assembly 38 includes a support base 381 and two moving clamps 382. The support base 381 is plate-shaped and fixedly connected to the bottom wall of the cooling tank 3, and is evenly distributed along the length of the bottom wall of the cooling tank 3. The moving clamps 382 are slidably connected to the top of the support base 381. The side of the moving clamps 382 that is close to each other has a groove that matches the shape of the bottom connecting water pipe 37.

[0085] When installing the bottom connecting water pipe 37 on the bottom wall of the cooling tank 3, first place the bottom connecting water pipe 37 on the support base 381, and then move the moving clamps 382 towards each other to fix the bottom connecting water pipe 37 to the bottom of the cooling tank 3. When it is necessary to remove the bottom connecting water pipe 37 from the cooling tank 3, first drive the moving clamps 382 to move away from each other to facilitate the removal of the bottom connecting water pipe 37 from the support base 381.

[0086] During the transport of the plastic parts from the inlet 31 to the outlet 32, water is sprayed onto the plastic parts through the side branch pipes 331 on both sides of the cooling tank 3 and the bottom branch pipe 371 at the bottom, cooling the plastic parts. In this process, the output shaft of the drive servo motor 362 can be rotated, driving the drive gear 361 and drive ring gear 36 to rotate, thereby rotating the side-connected water pipe 33 to adjust the spray angle and achieve a better cooling effect.

[0087] Reference Figure 5The bottom of the cooling tank 3 has several connecting ports 39. Water sprayed onto the surface of the plastic part detaches from the surface and enters the circulating water tank 2 through the connecting ports 39. The opening at the top of the circulating water tank 2 facilitates heat dissipation for the water entering the tank. Additionally, a cooling fan 4 is fixed to the bottom of the cooling tank 3. The cooling fan 4 blows cool air into the circulating water tank 2, accelerating the airflow rate at the top of the tank and further speeding up the cooling of the water within the tank.

[0088] Reference Figure 5 , 7 The bottom wall of the circulating water tank 2 has drain outlets 22 near both ends. A water inlet pipe 51 is detachably connected to the circulating water tank 2 at the drain outlets 22. The other end of the water inlet pipe 51 is connected to the circulating water tank 5. The water inlet pipe 51 and the circulating water tank 5 are detachably connected and communicate with the circulating water tank 5. A filter screen is detachably connected to the circulating water tank 2 at the drain outlets 22. The filter screen can filter the water entering the circulating water tank 5, blocking large particles of impurities and making the water entering the circulating water tank 5 cleaner.

[0089] Reference Figure 8 The circulating water tank 5 has three circulating water pipes 52 detachably connected to its side wall. The other end of each circulating water pipe 52 is detachably connected to the side wall of two side connecting water pipes 33 and the bottom connecting water pipe 37, respectively. A booster pump 53 is fixedly installed on the circulating water tank 5 at the position corresponding to each circulating water pipe 52.

[0090] Water in the circulating water tank 2 enters the circulating water container 5 through the drain outlet 22 and inlet pipe 51 for storage. A booster pump 53 powers the water flow, causing the water stored in the circulating water container 5 to be transported through three circulating water pipes 52 to the side walls of two side connecting water pipes 33 and the bottom connecting water pipe 37, thus supplying cooling water to the side branch pipes 331 and the bottom branch pipe 371. Water sprayed onto the surface of the plastic part detaches from the surface and then sequentially enters the circulating water tank 2 and the circulating water container 5, before being sprayed back onto the surface of the plastic part through the circulating water pipes 52, thereby achieving the recycling of cooling water and saving water resources. Furthermore, the water temperature is achieved during the water flow process.

[0091] Reference Figure 9The two side-connecting water pipes 33 and the bottom-connecting water pipe 37 are detachably connected to cleaning water pipes 61. The three cleaning water pipes 61 converge at their ends and are connected to a cleaning water tank 6. The cleaning water tank 6 is detachably connected to the cleaning water pipes 61, and a bidirectional water pump 62 is fixedly installed in the cleaning water tank 6 at the position corresponding to the cleaning water pipes 61. The bidirectional water pump 62 is fixed to the side of the cleaning water tank 6 and is used to transport the scale cleaning agent formed in the cleaning water tank 6 to the side-connecting water pipes 33 and the bottom-connecting water pipe 37, and to pump the cleaned wastewater from the side-connecting water pipes 33 and the bottom-connecting water pipe 37 into the cleaning water tank 6.

[0092] Reference Figure 9 The top of the cleaning water tank 6 is provided with a water inlet 63 and a feeding port 64. A drive motor 65 is fixedly installed on the side wall of the cleaning water tank 6. The drive motor 65 is horizontally positioned. The output shaft of the drive motor 65 extends into the interior of the cleaning water tank 6, and a stirring rod is fixedly installed at the end of the output shaft of the drive motor 65. The axis of the stirring rod is horizontally positioned.

[0093] Before cleaning the side connecting water pipe 33 and the bottom connecting water pipe 37, powdered cleaning agent is first added to the feeding port 64, and pure water is delivered to the cleaning water tank 6 through the water inlet 63. The pure water and powdered cleaning agent are mixed by the drive motor 65 to form a liquid scale cleaner, which is convenient for subsequent transportation into the side connecting water pipe 33 and the bottom connecting water pipe 37.

[0094] Reference Figure 10 A ring-shaped limiting ring 7 is fixedly installed on the side wall of the side branch pipe 331 near its end. A baffle 71 is rotatably connected to the end of the side branch pipe 331. The baffle 71 is fan-shaped, and its arc-shaped side slides along the inner axis of the limiting ring 7. A second drive servo motor 72 is fixedly installed on the side wall of the side branch pipe 331 near its end. The second drive servo motor 72 is used to drive the baffle 71 to rotate. The body of the second drive servo motor 72 is fixed on the side wall of the side branch pipe 331, and the output shaft of the second drive servo motor 72 extends along the axial direction of the side branch pipe 331 and is fixedly connected to the end of the baffle 71.

[0095] When it is necessary to clean the side connecting water pipe 33 and the side branch pipe 331, the output shaft of the drive servo motor 72 is rotated, which in turn drives the baffle 71 to rotate until the baffle 71 completely blocks the port of the side branch pipe 331. This further prevents the cleaning agent from overflowing from the end of the side branch pipe 331 when cleaning the side connecting water pipe 33 and the side branch pipe 331, allowing the cleaning agent to stand in the side connecting water pipe 33 and the side branch pipe 331 for a certain period of time, giving the cleaning agent sufficient reaction time and improving the cleaning effect.

[0096] A solenoid valve 1 is fixedly installed at the position of the side connecting water pipe 33 corresponding to the cleaning water pipe 61, and a solenoid valve 2 is fixedly installed at the position of the side connecting water pipe 33 corresponding to the circulating water pipe 52. When spraying plastic parts, solenoid valve 1 is closed and solenoid valve 2 is opened, allowing water to flow from the circulating water pipe 52 into the side connecting water pipe 33 to spray the plastic parts; when spraying the side connecting water pipe 33 and the side branch pipe 331, solenoid valve 1 is opened and solenoid valve 2 is closed, allowing scale remover to flow from the cleaning water pipe 61 into the side branch pipe 331 for cleaning. The cooperation between solenoid valve 1 and solenoid valve 2 facilitates the control of the flow between the circulating water pipe 52, the cleaning water pipe 61, and the side connecting water pipe 33.

[0097] The implementation principle of the cooling device for extruders that can automatically clean scale according to the embodiments of this application is as follows:

[0098] During processing, the plastic parts are transported from the feed port 31 into the cooling tank 3 and from the discharge port 32 out of the cooling tank 3. During the transportation of the plastic parts in the cooling tank 3, the surface of the plastic parts is sprayed. The first solenoid valve is closed and the second solenoid valve is opened, so that water flows from the circulating water pipe 52 into the two side connecting water pipes 33 and the bottom connecting water pipe 37 to spray and cool the plastic parts.

[0099] To prevent scale buildup in the side connecting water pipe 33, side branch pipe 331, bottom connecting water pipe 37, and bottom branch pipe 371, which would reduce the cooling effect of the plastic parts, the cooling device will regularly clean the side connecting water pipe 33, side branch pipe 331, bottom connecting water pipe 37, and bottom branch pipe 371.

[0100] The cleaning process includes the following steps: First, by rotating the output shaft of the drive servo motor 362, the drive gear 361 is rotated, which in turn drives the drive gear ring 36 to rotate. The drive gear ring 36 drives the side connecting water pipe 33 to rotate until the end of the side branch pipe 331 away from the side connecting water pipe 33 tilts upward, so as to prevent the scale cleaner from overflowing from the end of the side branch pipe 331 when the scale cleaner is delivered to the side connecting water pipe 33 and the side branch pipe 331 later.

[0101] Furthermore, the output shaft of the second drive servo motor 72 is rotated, which in turn drives the baffle 71 to rotate until the baffle 71 completely blocks the port of the side branch pipe 331. This further prevents the cleaning agent from overflowing from the end of the side branch pipe 331 when cleaning the side connecting water pipe 33 and the side branch pipe 331, allowing the cleaning agent to remain in the side connecting water pipe 33 and the side branch pipe 331 for a certain period of time, giving the cleaning agent sufficient reaction time and improving the cleaning effect.

[0102] Next, powdered cleaning agent is added to the feeding port 64, and purified water is supplied to the cleaning water tank 6 through the water inlet 63. A stirring rod mixes the purified water and powdered cleaning agent to form a liquid scale cleaner. The scale cleaner is then transported to the side connecting water pipe 33 and the side branch pipe 331 by the bidirectional water pump 62. After standing for a period of time, the cleaned wastewater is pumped from the side connecting water pipe 33 along the cleaning water pipe 61 to the cleaning water tank 6 by the bidirectional water pump 62. Finally, both ends of the cleaning water pipe 61 are disconnected from the cleaning water tank 6 and the side connecting water pipe 33, respectively, to facilitate transporting the cleaning water tank 6 to the sewage discharge point for wastewater treatment.

[0103] Additionally, the side connecting water pipe 33 can be connected and disconnected from the cooling tank 3 using clamping component 34, facilitating the removal of the side connecting water pipe 33 from the cooling tank 3 for inspection. Similarly, the bottom connecting water pipe 37 can be connected and disconnected from the cooling tank 3 using clamping component 38, facilitating the removal of the bottom connecting water pipe 37 from the cooling tank 3 for inspection.

[0104] By driving the servo motor to rotate the drive gear 361, which in turn drives the side connecting water pipe 33 to rotate, it can also be used to adjust the angle of the side branch pipe 331 spraying onto the plastic part when cooling the plastic part, thereby achieving a better cooling effect.

[0105] In summary, by regularly cleaning the scale inside the side connecting water pipe 33, side branch pipe 331, bottom connecting water pipe 37, and bottom branch pipe 371 using the above technical solution, the accumulation of scale is reduced, ensuring the unobstructed flow of the side connecting water pipe 33, side branch pipe 331, bottom connecting water pipe 37, and bottom branch pipe 371, thereby improving the cooling effect of the plastic parts.

[0106] The above are all 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 cooling device for an extruder that can automatically clean scale, characterized in that: It includes a cooling tank (3), which is configured as a tank body. Its length direction is set along the transport direction of the plastic parts. The cooling tank (3) has an inlet (31) at one end and an outlet (32) at the other end. Two water pipes (33) are connected to the side and are respectively set on the two opposite inner walls of the cooling tank (3), with their axial direction along the length of the cooling tank (3); Side branch pipes (331) are evenly distributed along the axial direction of the side connecting water pipe (33), one end of which is connected to and communicates with the side connecting water pipe (33), and the other end extends towards the plastic part. The limiting ring (7) is fixed on the side wall of the side branch pipe (331); The baffle (71) is configured as a fan shape and is rotatably connected to the end of the side branch pipe (331), and its side slides along the inner side of the limiting ring (7); Drive servo motor 2 (72) is fixed to the side branch pipe (331) and is used to drive the baffle (71) to rotate; Clamping assembly 1 (34) is hinged to the inner wall of the cooling tank (3) to support the side-connecting water pipe (33); A drive gear ring (36) is sleeved on one end of the side-connecting water pipe (33) and fixedly connected to the side-connecting water pipe (33); The drive gear (361) is rotatably connected to the inner wall of the cooling tank (3). A drive servo motor (362) is fixedly provided on the inner wall of the cooling tank (3) at the position corresponding to the drive gear (361). The drive servo motor (362) is used to drive the drive gear (361) to rotate. The drive gear (361) meshes with the side wall of the drive gear ring (36). By rotating the output shaft of the drive servo motor (362), the drive gear (361) is driven to rotate, which in turn drives the drive gear ring (36) to rotate. The drive gear ring (36) drives the side connecting water pipe (33) to rotate, so that the end of the side branch pipe (331) away from the side connecting water pipe (33) tilts upward. The cleaning water tank (6) has a water inlet (63) and a feeding port (64) on the top, and a stirring rod is rotatably connected inside; Cleaning water pipe (61), one end of which is detachably connected to and connected to the cleaning water tank (6), and the other end of which is detachably connected to and connected to the side-connecting water pipe (33); A two-way water pump (62) is fixed on the side of the cleaning water tank (6) to transport the scale cleaning agent formed in the cleaning water tank (6) to the side connecting water pipe (33) and to pump the cleaned sewage from the side connecting water pipe (33) into the cleaning water tank (6).

2. The cooling device for an extruder capable of automatically cleaning scale according to claim 1, characterized in that: include: A bottom-connecting water pipe (37) is installed on the bottom wall of the cooling tank (3), with its axis direction along the length of the cooling tank (3); Bottom branch pipe (371) is evenly distributed along the axial direction of bottom connecting water pipe (37), one end of which is connected to and communicates with side connecting water pipe (33), and the other end of which extends toward the plastic part. Clamping component two (38) is fixed to the bottom wall of the cooling tank (3) to support the bottom connecting water pipe (37).

3. The cooling device for an extruder capable of automatically cleaning scale according to claim 2, characterized in that: The end of the side branch pipe (331) away from the side connecting water pipe (33) is inclined toward the transport direction of the plastic part; The end of the bottom branch pipe (371) away from the bottom connecting water pipe (37) is inclined toward the transport direction of the plastic part.

4. The cooling device for an extruder capable of automatically cleaning scale according to claim 1, characterized in that: include: The circulating water tank (2) has an opening on the top side and is fixed directly below the cooling tank (3). The bottom of the cooling tank (3) has a connecting port (39), through which the water in the cooling tank (3) enters the circulating water tank (2). The circulating water tank (5) is used to store clean cooling water; The water inlet pipe (51) is connected to the circulating water tank (5) at one end and to the circulating water trough (2) at the other end. The circulating water pipe (52) is connected to the circulating water tank (5) at one end and to the side-connecting water pipe (33) at the other end. A booster pump (53) is fixed on the side wall of the circulating water tank (5) at the position corresponding to the circulating water pipe (52) to transport the water in the circulating water tank (5) outward along the circulating water pipe (52).

5. A cooling device for an extruder capable of automatically cleaning scale according to claim 4, characterized in that: A solenoid valve is fixedly installed at the position of the side connecting water pipe (33) corresponding to the cleaning water pipe (61); A solenoid valve is fixedly installed at the position of the side connecting water pipe (33) corresponding to the circulating water pipe (52).

6. A cooling device for an extruder capable of automatically cleaning scale according to claim 1, characterized in that: The clamping assembly one (34) includes: The mounting bracket (341) is hinged at one end to the inner wall of the cooling tank (3), and its other end extends horizontally toward the middle of the cooling tank (3); The push block (343) slides along the length of the mounting bracket (341); The connecting rod (344) is hinged at its end to the push block (343); The claw (345) is hinged at one end to the end of the connecting rod (344) away from the push block (343), and the other end is used to clamp the side connecting water pipe (33). The middle part is hinged to the end of the mounting bracket (341). A cylinder (342) is used to provide power for the sliding of the push block (343).

7. A cooling device for an extruder capable of automatically cleaning scale according to claim 4, characterized in that: A filter screen is detachably connected to the circulating water tank (2) at the position corresponding to the water inlet pipe (51).

8. A cooling device for an extruder that can automatically clean scale according to claim 4, characterized in that: A cooling fan (4) is fixedly installed at the bottom of the cooling tank (3).

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