A production equipment for ultra-high molecular weight polyethylene pipes

Abstract

The present invention relates to the field of polyethylene pipe production, and discloses a production device for ultra-high molecular weight polyethylene pipes, which includes a base. A screw conveyor device and a heating device are arranged on the top of the base. A feeding funnel and an extrusion forming device are fixedly installed at both ends of the screw conveyor device. The screw conveyor device is used for conveying and heating polyethylene materials, and the extrusion forming device is used for extruding and forming polyethylene materials. A scraping device is arranged directly below the screw conveyor device on the top of the base, and a direction limiting device is slidably installed inside the scraping device; in the present invention, the scraping piece inside the scraping device rises to scrape the polyethylene materials adhered to the surface of the conveying rod and the conveying blades, preventing the molten polyethylene materials from agglomerating and blocking. By extending the sector-shaped dial plate arranged inside the first scraper, the molten polyethylene materials near the outside of the conveying rod are transported towards the edge, improving the uniformity of transporting polyethylene materials inside the conveying pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of polyethylene pipe production, and more specifically, it relates to a production device for ultra-high molecular weight polyethylene pipes. Background Art

[0002] The production of ultra-high molecular weight polyethylene pipes is an advanced manufacturing process. It mainly uses ultra-high molecular weight polyethylene as raw material and manufactures pipes through an extrusion forming process. Ultra-high molecular weight polyethylene has excellent properties such as high strength, high wear resistance, low friction coefficient, corrosion resistance, and self-lubrication. During the production process, the raw material goes through steps such as high-temperature melting, extrusion forming, and cooling and shaping, and finally pipes are made. Such pipes are widely used in fields such as chemical industry, mining, food processing, and medicine for transporting solid particles, slurries, and corrosive liquids.

[0003] A patent application with the publication number CN119261144A discloses a production device for ultra-high molecular weight polyethylene pipes, including an equipment box. An extrusion heating mechanism is arranged on the top of the equipment box; the extrusion heating mechanism includes a driving device fixedly installed on the top of the equipment box. The output end of the driving device is fixedly connected with a transmission shaft. One end of the transmission shaft is fixedly installed with a gear box, and one side of the gear box is fixedly connected with a fixed pipe. It can perform efficient pretreatment on the raw material, ensure that the raw material particles are uniform and well mixed, lay a good foundation for the subsequent plasticization and extrusion processes, improve the quality and performance stability of the pipes, can meet the temperature requirements of ultra-high molecular weight polyethylene pipes at different production stages, make the molecular structure of the pipes more regular, thereby enhancing the strength, toughness, and corrosion resistance of the pipes, and providing reliable technical support for the large-scale production of ultra-high molecular weight polyethylene pipes.

[0004] When the above device uses a screw blade to convey polyethylene raw material, a heating device is arranged outside the conveying pipe, and the inside is conveyed by the rotation of the screw blade. During the conveying process, since the spiral blade is a metal structure and the outside of the pipe is heated, when the raw material has not entered the heating pipe, with long-term use, more heat is conducted outside the spiral blade, and a small amount of melting phenomenon occurs. The conveyed polyethylene raw material adheres to the blade, resulting in a reduction in the conveying efficiency of the blade, causing blockage and uneven feeding. Summary of the Invention

[0005] The present invention provides a production device for ultra-high molecular weight polyethylene pipes to solve the technical problem in the related art that during the conveying process, since the spiral blade is a metal structure and the outside of the pipe is heated, when the raw material has not entered the heating pipe, with long-term use, more heat is conducted outside the spiral blade, a small amount of melting phenomenon occurs, the conveyed polyethylene raw material adheres to the blade, resulting in a reduction in the conveying efficiency of the blade, causing blockage and uneven feeding.

[0006] The present invention provides a production device for ultra-high molecular weight polyethylene pipes, including a base. A screw conveying device and a heating device are arranged on the top of the base. A feeding funnel and an extrusion forming device are fixedly installed at both ends of the screw conveying device. The screw conveying device is used for conveying and heating polyethylene materials, and the extrusion forming device is used for extruding and forming polyethylene materials. A scraping device is arranged directly below the screw conveying device on the top of the base, and a direction limiting device is slidably installed inside the scraping device; the scraping device includes an internal transmission ring, an external transmission ring, teeth, and a scraping member. The shape of the internal transmission ring is the same as that of the external transmission ring. The internal transmission ring and the external transmission ring are in the same vertical plane. A direction limiting device is slidably installed between the inner wall of the external transmission ring and the outer wall of the internal transmission ring. A number of teeth are annularly arranged on the side wall of the external transmission ring. The direction limiting device meshes with the teeth, and a scraping member is arranged on the direction limiting device. The direction limiting device drives the scraping member to slide inside the screw conveying device, and the scraping member is used for scraping the polyethylene materials adhered to the inside of the screw conveying device.

[0007] As a further optimized solution of the present invention, the screw conveying device includes a conveying pipe fixedly installed on the top of the base. A conveying rod is rotatably installed inside the conveying pipe. A conveying blade is fixedly installed on the outer wall of the conveying rod. The outer diameter of the conveying blade is the same as the inner diameter of the conveying pipe. A scraping groove is arranged at the bottom of the conveying pipe, and the scraping groove is directly above the scraping device.

[0008] As a further optimized solution of the present invention, the scraping device includes symmetrically arranged first fixing blocks fixedly installed on the top of the base. A second fixing block is fixedly installed on the side of the first fixing block. A third fixing block is fixedly installed at the end of the second fixing block. An external transmission ring is fixedly installed at the end of the first fixing block. An internal transmission ring is fixedly installed at the end of the third fixing block. Two direction limiting devices are slidably installed between the internal transmission ring and the external transmission ring, and a scraping member is fixedly installed on the direction limiting device.

[0009] As a further optimized solution of the present invention, the direction limiting device includes a limiting slider slidably installed between an inner transmission ring and an outer transmission ring. A first rotating rod is rotatably installed inside the limiting slider. A gear is fixedly installed at the end of the first rotating rod. A first motor is fixedly installed on the side of the gear. A second fixing plate is fixedly installed on the outer wall of the first motor. A first fixing plate is fixedly installed on the side wall of the second fixing plate. A limiting column is fixedly installed on the side of the first fixing plate close to the limiting slider. The outer wall of the limiting column meshes with the outer wall of the outer transmission ring. A direction limiting block is fixedly installed on the side of the limiting slider away from the first motor. The direction limiting block positions the scraping member at the top of the limiting slider in a vertically upward position.

[0010] As a further optimized solution of the present invention, the scraping member includes a first scraping plate fixedly installed at the top of the limiting slider. A first lifting column is slidably installed inside the first scraping plate. A second lifting column is fixedly installed at the bottom of the first lifting column. A spring is arranged on the outer wall of the second lifting column. The top of the spring is connected to the bottom of the first lifting column, and the bottom of the spring is connected to the inner wall of the first scraping plate. A rotating block is fixedly installed at the bottom of the second lifting column. A rotating column is rotatably installed inside the rotating block. Two first lifting blocks are rotatably installed on the outer wall of the rotating column. A telescopic rod is fixedly installed on the side wall of the first lifting block. A scraping rotating rod is fixedly installed at the end of the telescopic rod. A sector-shaped dial is fixedly installed at the end of the scraping rotating rod. The sector-shaped dial is rotatably installed inside the first scraping plate.

[0011] As a further optimized solution of the present invention, a torsion spring is arranged at the connection position between the sector-shaped dial and the inside of the first scraping plate. The sector-shaped dials are symmetrically installed inside the first scraping plate.

[0012] As a further optimized solution of the present invention, a high-temperature resistant fluororubber is arranged on the inner wall of the scraping groove. The fluororubber is used to seal the inner wall of the conveying pipeline.

[0013] As a further optimized solution of the present invention, two second fixing blocks are symmetrically arranged on the outer wall of the first fixing block. The diameters of the two second fixing blocks are greater than the distance between the direction limiting block and the first motor.

[0014] As a further optimized solution of the present invention, the shapes of the two side surfaces of the first scraping plate are the same as the outer wall of the conveying blade.

[0015] As a further optimized solution of the present invention, the maximum distance between the two first fixing blocks is less than the length of the scraping groove.

[0016] The beneficial effects of the present invention are as follows:

[0017] For a production device of ultra-high molecular weight polyethylene pipes according to the present invention, the scraping member inside the scraping device rises to scrape the polyethylene material adhered to the surface of the conveying rod and the conveying blades, preventing the molten polyethylene material from agglomerating and clogging. By the extension of the sector-shaped deflector provided inside the first scraper, the molten polyethylene material near the outside of the conveying rod is transported towards the edge, improving the uniformity of transporting the polyethylene material inside the conveying pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall device appearance of the present invention;

[0019] Figure 2 is a schematic diagram of the installation position of the overall device of the present invention;

[0020] Figure 3 is a schematic diagram of the internal structure of the screw conveying device of the present invention;

[0021] Figure 4 is a connection schematic diagram of the screw conveying device and the scraping device of the present invention;

[0022] Figure 5 is a partial structure schematic diagram of the scraping device of the present invention;

[0023] Figure 6 is a schematic diagram of the internal structure of the direction limiting device of the present invention;

[0024] Figure 7 is a schematic diagram of the internal structure installation of the scraping member of the present invention;

[0025] Figure 8 is a schematic diagram of the internal transmission structure of the scraping member of the present invention.

[0026] In the figure:

[0027] 1. Base; 11. Feeding funnel; 12. Screw conveying device; 121. Conveying pipeline; 122. Conveying rod; 123. Conveying blades; 124. Scraping groove; 13. Heating device; 14. Extrusion forming device;

[0028] 2. Scraping device; 21. First fixing block; 22. Second fixing block; 23. Third fixing block; 24. Internal transmission ring; 25. External transmission ring; 26. Teeth; 27. Scraping member; 271. First scraper; 272. First lifting column; 273. Second lifting column; 274. Spring; 275. Rotating block; 276. Rotating column; 277. First lifting block; 278. Expansion rod; 279. Scraping rotating rod; 2791. Sector-shaped deflector;

[0029] 3. Direction limit device; 31. Limit slider; 32. First rotating rod; 33. Gear; 34. First fixing plate; 35. Second fixing plate; 36. First motor; 37. Limit post; 38. Direction limit block. Detailed implementation mode

[0030] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. The functions and arrangements of the elements discussed can be changed without departing from the scope of protection of the content of this specification. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0031] As Figures 1 to 2 shown, a production device for ultra-high molecular weight polyethylene pipes according to an embodiment of the present invention includes a base 1. A screw conveying device 12 and a heating device 13 are provided on the top of the base 1. A feeding funnel 11 and an extrusion forming device 14 are fixedly installed at both ends of the screw conveying device 12. The screw conveying device 12 is used for conveying and heating polyethylene materials, and the extrusion forming device 14 is used for extruding and forming polyethylene materials. A scraping device 2 is provided on the top of the base 1 directly below the screw conveying device 12.

[0032] As Figures 3 to 5 shown, a direction limit device 3 is slidably installed inside the scraping device 2. The scraping device 2 includes an internal transmission ring 24, an external transmission ring 25, teeth 26, and a scraping member 27. The shape of the internal transmission ring 24 is the same as that of the external transmission ring 25. The internal transmission ring 24 and the external transmission ring 25 are in the same vertical plane. A direction limit device 3 is slidably installed between the inner wall of the external transmission ring 25 and the outer wall of the internal transmission ring 24. A number of teeth 26 are annularly arranged on the side wall of the external transmission ring 25. The direction limit device 3 meshes with the teeth 26. A scraping member 27 is provided on the direction limit device 3. The direction limit device 3 drives the scraping member 27 to slide inside the screw conveying device 12. The scraping member 27 is used for scraping the polyethylene materials adhered to the inside of the screw conveying device 12.

[0033] It should be noted that polyethylene material is placed inside the feeding hopper 11. The screw conveying device 12 is rotated by a motor to transport the polyethylene material inside the screw conveying device 12. Inside the screw conveying device 12, there are a conveying pipe 121, a conveying rod 122, conveying blades 123 and a scraping groove 124. The conveying pipe 121 is fixedly installed on the top of the base 1. The conveying rod 122 and the conveying blades 123 are rotatably installed inside the conveying pipe 121. The scraping groove 124 is located directly above the scraping device 2. As the heating device 13 continuously heats, due to the heat conduction effect on the conveying rod 122 and the conveying blades 123 on the side close to the base 1, the polyethylene material that has not been transported to the position of the heating device 13 is heated, resulting in softening and melting. This causes the outer walls of the conveying rod 122 and the conveying blades 123 at the front end of the heating device 13 (the direction of polyethylene material transportation is from the feeding hopper 11 for feeding and transported to the extrusion forming device 14, and the polyethylene material transported inside the screw conveying device 12 that has not passed through the heating device 13 belongs to the front end of the heating device 13) to adhere to polyethylene material. Since this position is not a heating position, the polyethylene material may form clusters and cause blockage problems. If a cooling device is directly provided at the front end of the heating device 13, it will result in a poor melting effect when the heating device 13 heats, causing further blockage. Therefore, a scraping groove 124 is provided on the conveying pipe 121. The direction limiting device 3 is started to drive the scraping member 27 to slide on the outer wall of the inner transmission ring 24 and the inner wall of the outer transmission ring 25, so that the scraping member 27 rises into the conveying pipe 121 and contacts the surfaces of the conveying rod 122 and the conveying blades 123. During the rotation and transportation of the conveying rod 122 and the conveying blades 123, the direction limiting device 3 can drive the scraping member 27 to move horizontally following the position of the conveying blade 123, thereby scraping the polyethylene material adhering to the surface of the conveying blade 123. The movement trajectories of the direction limiting device 3 and the scraping member 27 are the same as the shape of the outer transmission ring 25, thus completing the effect of scraping and driving the direction limiting device 3 and the scraping member 27 to rise and fall, preventing blockage problems during transportation and improving the transportation efficiency. Therefore, a heating device 13 is provided on the outer wall of the screw conveying device 12, and the polyethylene material transported inside the screw conveying device 12 can be heated and melted by the heating device 13. The melted polyethylene material is transported to the inner wall of the extrusion forming device 14, and through the extrusion and shaping of the extrusion forming device 14, the production of the pipe is completed.

[0034] As Figures 2 to 4As shown, the screw conveyor device 12 includes a conveying pipe 121 fixedly installed on the top of the base 1. A conveying rod 122 is rotatably installed inside the conveying pipe 121. A conveying blade 123 is fixedly installed on the outer wall of the conveying rod 122. The outer diameter of the conveying blade 123 is the same as the inner diameter of the conveying pipe 121. A scraping groove 124 is provided at the bottom of the conveying pipe 121, and the scraping groove 124 is directly above the scraping device 2.

[0035] It should be noted that the motor is connected to the conveying rod 122 to drive the rotation of the conveying blade 123, so that the raw materials poured into the feeding funnel 11 move horizontally in the direction close to the extrusion forming device 14 through the rotation of the conveying rod 122 and the conveying blade 123, thus realizing the function of transporting materials. The outer diameter of the conveying blade 123 is the same as the inner diameter of the conveying pipe 121, which reduces the problem of material jamming when the conveying blade 123 transports materials.

[0036] As Figures 4 to 5 As shown, the scraping device 2 includes symmetrically arranged first fixing blocks 21 fixedly installed on the top of the base 1. A second fixing block 22 is fixedly installed on the side of the first fixing block 21. A third fixing block 23 is fixedly installed at the end of the second fixing block 22. An external transmission ring 25 is fixedly installed at the end of the first fixing block 21. An internal transmission ring 24 is fixedly installed at the end of the third fixing block 23. Two direction limiting devices 3 are slidably installed between the internal transmission ring 24 and the external transmission ring 25. A scraping member 27 is fixedly installed on the direction limiting device 3.

[0037] It should be noted that the direction limiting device 3 rotates and meshes with the teeth 26 on the side wall of the external transmission ring 25, so as to drive the scraping member 27 to move along the shape of the external transmission ring 25, which can drive the function of lifting the scraping member 27. The shapes of both sides of the scraping member 27 are the same as the outer wall shape of the conveying blade 123, so that the scraping member 27 can scrape the polyethylene material adhered to the conveying blade 123 and the conveying rod 122, prevent blockage, and improve the conveying efficiency and the uniformity of material conveying.

[0038] As Figures 5 to 6As shown, the direction limiting device 3 includes a limiting slider 31 slidably installed between an inner transmission ring 24 and an outer transmission ring 25. A first rotating rod 32 is rotatably installed inside the limiting slider 31. A gear 33 is fixedly installed at the end of the first rotating rod 32. A first motor 36 is fixedly installed on the side of the gear 33. A second fixing plate 35 is fixedly installed on the outer wall of the first motor 36. A first fixing plate 34 is fixedly installed on the side wall of the second fixing plate 35. A limiting column 37 is fixedly installed on the side of the first fixing plate 34 close to the limiting slider 31. The outer wall of the limiting column 37 meshes with the outer wall of the outer transmission ring 25. A direction limiting block 38 is fixedly installed on the side of the limiting slider 31 away from the first motor 36. The direction limiting block 38 positions the scraping member 27 at the top of the limiting slider 31 in a vertically upward position.

[0039] It should be noted that when the first motor 36 is started, it drives the gear 33 to rotate. Since the gear 33 meshes with the teeth 26, the limiting slider 31 is driven to slide on the outer wall of the inner transmission ring 24 and the inner wall of the outer transmission ring 25, so that the scraping member 27 scrapes the polyethylene material adhered to the conveying rod 122 and the conveying blades 123. The first rotating rod 32 and the limiting column 37 are stuck on the outer transmission ring 25 to limit the position of the first motor 36. When the first motor 36 is started, it can drive the gear 33 to rotate. Since the limiting slider 31 and the first rotating rod 32 are in a rotatable connection state, the rotation of the gear 33 does not drive the limiting slider 31 to rotate. A direction limiting block 38 is fixedly installed on the side of the limiting slider 31 away from the first motor 36. The direction limiting block 38 is fixedly installed with the limiting slider 31. Under the action of gravity, the direction limiting block 38 maintains a state as Figure 6 shown, so that during the movement of the limiting slider 31, the direction is limited, and the scraping member 27 is in a vertically upward state.

[0040] As Figures 7 to 8As shown, the scraping member 27 includes a first scraping plate 271 fixedly installed on the top of the limit slider 31. A first lifting column 272 is slidably installed inside the first scraping plate 271. A second lifting column 273 is fixedly installed at the bottom of the first lifting column 272. A spring 274 is arranged on the outer wall of the second lifting column 273. The top of the spring 274 is connected to the bottom of the first lifting column 272, and the bottom of the spring 274 is connected to the inner wall of the first scraping plate 271. A rotating block 275 is fixedly installed at the bottom of the second lifting column 273. A rotating column 276 is rotatably installed inside the rotating block 275. Two first lifting blocks 277 are rotatably installed on the outer wall of the rotating column 276. A telescopic rod 278 is fixedly installed on the side wall of the first lifting block 277. A scraping rotating rod 279 is fixedly installed at the end of the telescopic rod 278. A sector-shaped dial 2791 is fixedly installed at the end of the scraping rotating rod 279. The sector-shaped dial 2791 is rotatably installed inside the first scraping plate 271.

[0041] It should be noted that in the initial state, the first lifting column 272 is higher than the top of the first scraping plate 271 under the action of the spring 274. Therefore, it can drive the two symmetrically arranged sector-shaped dials 2791 to be in a fully extended state. When the first scraping plate 271 rises and moves towards the conveying pipe 121 to a position close to the scraping groove 124, fluororubber is provided on the scraping groove 124 for sealing the inner wall of the conveying pipe 121. When the first lifting column 272 abuts against the fluororubber on the scraping groove 124, it drives the first lifting column 272 to move downward, causing the sector-shaped dial 2791 to contract into the first scraping plate 271. Thus, the first scraping plate 271 can completely rise into the conveying pipe 121 until the top of the first scraping plate 271 contacts the outer wall of the conveying rod 122, and the sector-shaped dial 2791 is always contracted into the inner wall of the first scraping plate 271. When the first scraping plate 271 moves out of the inner wall of the conveying pipe 121, the top of the first lifting column 272 no longer receives the extrusion force, so that the first lifting column 272 extends. Then, it can dial the molten polyethylene material near the conveying rod 122 towards the edge, thereby reducing the possibility of the polyethylene material melting and agglomerating and improving the uniformity. When the sector-shaped dial 2791 contacts the inner wall of the scraping groove 124, it contracts into the first scraping plate 271 again. Then, the first scraping plate 271 completely moves out of the conveying pipe 121, and the sector-shaped dial 2791 expands again.

[0042] As Figures 7 to 8 shown, a torsion spring is arranged at the connection position between the sector-shaped dial 2791 and the inside of the first scraping plate 271. The sector-shaped dials 2791 are symmetrically installed inside the first scraping plate 271.

[0043] It should be noted that a torsion spring is provided at the connection position inside the sector-shaped dial 2791 and the first scraper 271. The sector-shaped dial 2791 is symmetrically installed inside the first scraper 271, so that when the first scraper 271 descends, the sector-shaped dial 2791 extends out from inside the first scraper 271.

[0044] As Figures 3 to 4 shown, the inner wall of the scraping groove 124 is provided with heat-resistant fluororubber, and the fluororubber is used to seal the inner wall of the conveying pipeline 121.

[0045] It should be noted that the inner wall of the scraping groove 124 is provided with heat-resistant fluororubber, and the fluororubber is used to seal the inner wall of the conveying pipeline 121. Since the fluororubber has the effect of high temperature resistance, it can prevent the materials inside the conveying pipeline 121 from spilling out.

[0046] As Figure 4 shown, two second fixing blocks 22 are symmetrically arranged on the outer wall of the first fixing block 21, and the diameters of the two second fixing blocks 22 are greater than the distance between the direction limiting block 38 and the first motor 36.

[0047] It should be noted that the diameters of the two second fixing blocks 22 are greater than the distance between the direction limiting block 38 and the first motor 36, which can prevent the direction limiting device 3 from touching the second fixing block 22 and the third fixing block 23 during the moving process.

[0048] As Figures 4 to 6 shown, the outer shapes of the two side surfaces of the first scraper 271 are the same as the outer wall of the conveying blade 123.

[0049] It should be noted that the outer shapes of the two side surfaces of the first scraper 271 are the same as the outer wall of the conveying blade 123, so that when the first scraper 271 rises into the inside of the conveying pipeline 121, it can clean the polyethylene material adhered to the surface of the conveying blade 123.

[0050] As Figures 3 to 4 shown, the maximum distance between the two first fixing blocks 21 is less than the length of the scraping groove 124.

[0051] It should be noted that the maximum distance between the two first fixing blocks 21 is less than the length of the scraping groove 124, so that when the first scraper 271 moves, the scraping groove 124 will not interfere with the direction of the scraping member 27.

[0052] The above describes the embodiments of this embodiment, but this embodiment is not limited to the above specific implementation manners. The above specific implementation manners are only illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. An ultra-high molecular weight polyethylene pipe production device, comprising a base (1), characterized in that: A screw conveying device (12) and a heating device (13) are arranged on the top of the base (1); a feeding hopper (11) and an extrusion forming device (14) are fixedly installed at both ends of the screw conveying device (12); the screw conveying device (12) is used to convey and heat the polyethylene material; the extrusion forming device (14) is used to extrude the polyethylene material; a scraping device (2) is arranged on the top of the base (1) directly below the screw conveying device (12); a direction limiting device (3) is slidably installed inside the scraping device (2); The scraping device (2) comprises an internal transmission ring (24), an external transmission ring (25), teeth (26), and a scraping member (27). The shape of the internal transmission ring (24) is the same as that of the external transmission ring (25). The internal transmission ring (24) and the external transmission ring (25) are located in the same vertical plane. A direction limiting device (3) is slidably mounted on the inner wall of the external transmission ring (25) and the outer wall of the internal transmission ring (24). The side wall of the external transmission ring (25) has a plurality of teeth (26) in an annular array. The direction limiting device (3) meshes with the teeth (26). A scraping member (27) is arranged on the direction limiting device (3). The direction limiting device (3) drives the scraping member (27) to slide inside the screw conveying device (12). The scraping member (27) is used to scrape polyethylene material adhered to the inside of the screw conveying device (12).

2. The ultra-high molecular weight polyethylene pipe production equipment according to claim 1, characterized in that: The screw conveying device (12) comprises a conveying pipe (121) fixedly mounted on the top of the base (1); a conveying rod (122) is rotatably mounted inside the conveying pipe (121); a conveying blade (123) is fixedly mounted on the outer wall of the conveying rod (122); the outer diameter of the conveying blade (123) is the same as the inner diameter of the conveying pipe (121); a scraping groove (124) is provided at the bottom of the conveying pipe (121); and the scraping groove (124) is located directly above the scraping device (2).

3. The ultra-high molecular weight polyethylene pipe production equipment according to claim 2, characterized in that: The scraping device (2) comprises a first fixed block (21) fixedly mounted on the top of the base (1) and symmetrically arranged, a second fixed block (22) being fixedly mounted on the side of the first fixed block (21), a third fixed block (23) being fixedly mounted on the end of the second fixed block (22), an external transmission ring (25) being fixedly mounted on the end of the first fixed block (21), an internal transmission ring (24) being fixedly mounted on the end of the third fixed block (23), two direction limiting devices (3) being slidably mounted between the internal transmission ring (24) and the external transmission ring (25), and a scraping member (27) being fixedly mounted on the direction limiting device (3).

4. The ultra-high molecular weight polyethylene pipe production equipment according to claim 3, characterized in that: The direction limiting device (3) comprises a limiting slider (31) slidably mounted between an inner transmission ring (24) and an outer transmission ring (25); a first rotating rod (32) is rotatably mounted inside the limiting slider (31); a gear (33) is fixedly mounted on the end of the first rotating rod (32); a first motor (36) is fixedly mounted on the side of the gear (33); a second fixing plate (35) is fixedly mounted on the outer wall of the first motor (36); a first fixing plate (34) is fixedly mounted on the side wall of the second fixing plate (35); a limiting column (37) is fixedly mounted on the side of the first fixing plate (34) close to the limiting slider (31); the outer wall of the limiting column (37) meshes with the outer wall of the outer transmission ring (25); a direction limiting block (38) is fixedly mounted on the side of the limiting slider (31) away from the first motor (36); the direction limiting block (38) enables the scraping member (27) at the top of the limiting slider (31) to be in a vertically upward position.

5. The ultra-high molecular weight polyethylene pipe production equipment according to claim 4, characterized in that: The scraping member (27) comprises a first scraper (271) fixedly mounted on the top of the limiting slider (31); a first lifting column (272) is slidably mounted inside the first scraper (271); a second lifting column (273) is fixedly mounted on the bottom of the first lifting column (272); a spring (274) is disposed on the outer wall of the second lifting column (273); the top of the spring (274) is connected to the bottom of the first lifting column (272); the bottom of the spring (274) is connected to the inner wall of the first scraper (271); and the second lifting column (273) is fixedly mounted on the bottom of the first lifting column (272). 3) is fixedly mounted with a rotating block (275) at the bottom, a rotating column (276) is rotatably mounted inside the rotating block (275), two first lifting blocks (277) are rotatably mounted on the outer wall of the rotating column (276), a telescopic rod (278) is fixedly mounted on the side wall of the first lifting block (277), a scraping rotating rod (279) is fixedly mounted on the end of the telescopic rod (278), a fan-shaped paddle (2791) is fixedly mounted on the end of the scraping rotating rod (279), and the fan-shaped paddle (2791) is rotatably mounted inside the first scraper (271).

6. The ultra-high molecular weight polyethylene pipe production equipment according to claim 5, characterized in that: A torsion spring is provided at a connection position between the fan-shaped paddle plate (2791) and the inside of the first scraper plate (271); the fan-shaped paddle plate (2791) is symmetrically mounted inside the first scraper plate (271).

7. The ultra-high molecular weight polyethylene pipe production equipment according to claim 6, characterized in that: The inner wall of the scraping groove (124) is provided with high temperature resistant fluororubber, and the fluororubber is used to seal the inner wall of the conveying pipe (121).

8. The ultra-high molecular weight polyethylene pipe production equipment according to claim 7, characterized in that: Two second fixing blocks (22) are symmetrically arranged on the outer wall of the first fixing block (21), and the diameter of the two second fixing blocks (22) is greater than the distance between the direction limiting block (38) and the first motor (36).

9. The ultra-high molecular weight polyethylene pipe production equipment according to claim 8, characterized in that: The two side surfaces of the first scraper (271) have the same shape as the outer wall of the conveying blade (123).

10. The ultra-high molecular weight polyethylene pipe production equipment according to claim 9, characterized in that: The maximum distance between the two first fixing blocks (21) is smaller than the length of the scraping groove (124).

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