PE extrusion dehumidification device outside the pipeline

Abstract

The present application relates to the field of extrusion production equipment, and in particular to an external PE extrusion dehumidification device for pipelines, the external PE extrusion dehumidification device for pipelines comprising a body, a loading barrel vertically arranged in the body, a dehumidification structure arranged in the loading barrel, the dehumidification structure comprising a diverter plate, a dehumidification rod, an air pipe and a hot air structure, the diverter plate is fixedly connected to the loading barrel, a diverter hole is opened on the diverter plate, the diverter hole is used to divert the raw material into several streams, a dehumidification rod is arranged between adjacent diverter holes, each dehumidification rod is fixedly connected to the diverter plate, an air flow channel is arranged in each dehumidification rod, each dehumidification rod is provided with a plurality of jet holes, each jet hole is connected to the air flow channel, the air pipe is arranged in the diverter plate, the air pipe is connected to the air flow channel of each dehumidification rod, the air pipe is connected to the hot air structure, and the air pipe is used to transport hot air to the air flow channel, thereby achieving the effect of improving the quality of the PE pipe after extrusion molding.

Description

Technical Field

[0001] The present application relates to the field of extrusion production equipment, and in particular to a PE extrusion dehumidification device outside a pipeline. Background Art

[0002] At present, PE pipe is one of the most common pipes, which has the advantages of low temperature impact resistance, chemical corrosion resistance, wear resistance, etc. Due to its unique advantages, PE pipe is widely used in building water supply, building drainage, buried drainage pipes, building heating, gas transmission and distribution, gas transmission pipes, electrical and telecommunications protective casings, industrial pipes, agricultural pipes, etc. It is mainly used in urban water supply, urban gas supply and farmland irrigation.

[0003] The existing pipeline external PE pipe extrusion molding device includes a machine body, in which a feeding device, a melting device, an extrusion device and a cooling device are arranged. Generally, plastic particles are transported into the machine body through the feeding device, and then the plastic particles are heated by a heating device to completely melt the plastic particles. The molten plastic particles are then input into the extrusion barrel of the extrusion device, and the molten plastic in the barrel is extruded through a rotating shaft connected to a spiral blade. The plastic is cooled by a cooling device during the process of passing through the molding pipe head, and finally a PE plastic pipe fitting attached to the outside of the pipeline is formed.

[0004] The above-mentioned prior art solutions have the following defects: since the plastic particles contain some water, bubbles are easily generated during the melting and extrusion process of the plastic particles, resulting in quality defects of the PE pipe fittings after extrusion. Summary of the invention

[0005] In order to improve the quality of PE pipes after extrusion molding, the present application provides a PE extrusion dehumidification device outside the pipeline.

[0006] The above technical objectives of this application are achieved through the following technical solutions:

[0007] The external PE extrusion dehumidification device of the pipeline comprises a body, a loading barrel is vertically arranged in the body, a dehumidification structure is arranged in the loading barrel, the dehumidification structure comprises a diverter plate, a dehumidification rod, an air pipe and a hot air structure, the diverter plate is fixedly connected to the loading barrel, a diverter hole is opened on the diverter plate, the diverter hole is used to divert the raw material into several streams for transportation, a dehumidification rod is arranged between adjacent diverter holes, each dehumidification rod is fixedly connected to the diverter plate, an air flow channel is arranged in each dehumidification rod, a plurality of jet holes are evenly arranged on the circumferential side wall of each dehumidification rod, each jet hole is connected to the air flow channel, the air pipe is arranged in the diverter plate, the air pipe is connected to the air flow channel of each dehumidification rod, the air pipe is connected to the hot air structure, the hot air structure is used to heat the air, and the air pipe is used to transport the hot air to the air flow channel.

[0008] Furthermore, the hot air structure includes an air inlet pipe, a heater and an air outlet pipe. The heater is fixedly connected to the loading barrel, the air inlet pipe and the air outlet pipe are fixedly connected to the two ends of the heater respectively, the air outlet pipe is fixedly connected and communicated with the air supply pipe, and a fan is arranged in the air inlet pipe, which is used to deliver airflow to the heater.

[0009] Furthermore, a filter is provided in the air intake pipe, and the filter is used to filter the gas entering the air intake pipe.

[0010] Furthermore, the air intake pipe is also provided with a replacement component, which is used to replace the filter element. The replacement component includes a use frame and a reserve frame, which are fixedly connected. A replacement groove is opened on the air intake pipe, and the use frame and the reserve frame are both slidably connected to the replacement groove. The use frame and the reserve frame are both used to place the filter element to filter the air passing through the air intake pipe.

[0011] Furthermore, a sealing block is provided between the use frame and the storage frame, and the sealing block is fixedly connected to the use frame and the storage frame. A sealing assembly is provided on the sealing block, and the sealing assembly is used to close the gap between the sealing block and the wall of the intake pipe; the sealing assembly includes a sealing strip, an elastic member and an adsorption member, and a receiving groove is provided on the side wall of the sealing block, and the sealing strip and the elastic member are both located in the receiving groove, and the sealing strip is slidably connected to the receiving groove, and the elastic member is located between the sealing strip and the bottom wall of the receiving groove, and the two ends of the elastic member are respectively fixedly connected to the sealing strip and the bottom wall of the receiving groove, and the elastic member is used to pull the sealing strip back into the receiving groove, and the adsorption member includes a first magnet and a second magnet, the first magnet is fixedly connected to the sealing strip, and the second magnet is fixedly connected to the notch of the replacement groove, and the first magnet and the second magnet are adsorbed to each other.

[0012] Furthermore, a sealing plate is fixedly connected to the side of the use frame and the reserve frame away from the sealing block, and the sealing plate is used to seal the gap between the use frame or the reserve frame and the replacement slot.

[0013] Furthermore, the dehumidification rod also includes a fixed part and a rotating part, the fixed part is fixedly connected to the diverter plate, the rotating part is rotatably connected to the fixed part, air flow channels are arranged in the rotating part and the fixed part and are connected, an air flow driving device is arranged at the connection between the fixed part and the rotating part, the air flow driving device is used to drive the rotating part to rotate, and the air jet hole is arranged on the rotating part.

[0014] Furthermore, the airflow driving device includes a central axis, a support rod and a wind turbine. The central axis is arranged in the fixed part. A plurality of support rods are arranged, each support rod is arranged between the fixed part and the central axis, and both ends of the support rod are fixedly connected to the fixed part and the central axis respectively. The wind turbine is arranged in the rotating part, the wind turbine is fixedly connected to the rotating part, and the wind turbine is rotationally connected to the central axis.

[0015] Furthermore, the air injection hole on the rotating part is arranged obliquely with respect to the axis of the rotating part.

[0016] Furthermore, a gas recovery device is also provided in the upper barrel, and the gas recovery device includes a gas recovery ring and an exhaust pipe. The gas recovery ring is arranged below the diverter plate, and the gas recovery ring is fixedly connected to the upper barrel. A gas recovery chamber is provided in the gas recovery ring, and a plurality of gas recovery holes are provided on the side of the gas recovery ring away from the upper barrel, and the gas recovery holes are connected with the gas recovery chamber. The exhaust pipe passes through the side wall of the upper barrel and is fixedly connected with the gas recovery ring, and the exhaust pipe is connected with the gas recovery chamber. The end of the exhaust pipe away from the upper barrel is connected to the negative pressure device.

[0017] In summary, this application has the following technical effects:

[0018] 1. By setting up a dehumidification structure, the transported material is firstly diverted into several bundles by using a diverter plate, and then a dehumidification rod is set in the material bundle, and the hot air structure is used to transport hot air to the air flow channel of the dehumidification rod through the air pipe. The hot air is ejected from the dehumidification rod through the jet hole. The ejected hot air flow impacts and disperses the material bundle and takes away the moisture in the material for dehumidification, thereby dehumidifying the material, reducing the moisture in the material, and avoiding the generation of bubbles during subsequent extrusion after the material is melted, thereby achieving the purpose of improving the quality of PE pipe after extrusion molding;

[0019] 2. The dehumidification rod is provided with a fixed part and a rotating part, and an airflow driving device is provided between the fixed part and the rotating part. The airflow flowing between the fixed part and the rotating part is used to drive the airflow driving device to rotate, thereby driving the rotating part to rotate, and the air jet hole on the rotating part is used to further drive the rotating part to rotate, so that the rotating part sprays a rotating airflow, and the heated airflow sprayed by the rotating part is used to dry and dehumidify the material flowing down from the diversion hole, and at the same time, the rotating airflow is used to break up the original bundled material, and the moisture in the material is fully dried during the breaking process;

[0020] 3. By arranging a replacement component at the air intake pipe, the filter in the air intake pipe can be replaced without stopping the machine, thereby improving the convenience of replacing the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the PE extrusion dehumidification device outside the pipeline of the present application;

[0022] Figure 2 It is a structural schematic diagram of the hot air structure provided in the upper barrel of the present application;

[0023] Figure 3 It is a schematic diagram of the structure of the dehumidification structure and the gas recovery device in the upper barrel;

[0024] Figure 4 It is a structural schematic diagram of the dehumidification structure of the present application;

[0025] Figure 5 It is a schematic diagram of the connection between the dehumidification structure of the present application and the gas pipeline;

[0026] Figure 6 It is a schematic diagram of the gas pipeline arrangement of the present application;

[0027] Figure 7 It is a schematic diagram of the structure inside the dehumidification rod;

[0028] Figure 8 is a schematic diagram showing the structure of hot air;

[0029] Fig. 9 is a schematic diagram showing the structure of the replacement components;

[0030] Fig.10 is a schematic diagram showing the structure of the replacement component in the intake pipe;

[0031] Fig.11 yes Fig.10 A partial enlarged schematic diagram of part A.

[0032] In the figure, 1. body; 2. loading barrel; 3. dehumidification structure; 31. diverter plate; 311. diverter hole; 32. dehumidification rod; 321. fixed part; 322. rotating part; 4. hot air structure; 41. air inlet pipe; 42. heater; 43. air outlet pipe; 5. air delivery pipe; 6. filter element; 7. replacement component; 71. use frame; 72. reserve frame; 73. sealing block; 74. sealing plate; 8. sealing component; 81. sealing strip; 82. elastic member; 83. adsorption member; 831. first magnet; 832. second magnet; 9. air flow driving device; 91. central axis; 92. support rod; 93. wind turbine; 10. gas recovery device; 101. gas recovery ring; 102. exhaust pipe. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings.

[0034] Reference Figure 1-Figure 3 The external PE extrusion dehumidification device for pipes provided in this embodiment includes a body 1, in which a feeding device, a melting device, an extrusion device and a cooling device are arranged. The feeding device is used to convey raw materials into the melting device, the melting device is used to melt the raw materials into a molten state, the extrusion device is used to extrude the raw materials in a molten state, and the cooling device is used to cool and shape the extruded raw materials; the feeding device includes a vertically arranged feeding barrel 2, in which a dehumidification structure 3 is arranged, and the dehumidification structure 3 is used to remove moisture from the raw materials passing through the feeding barrel 2.

[0035] Reference Figure 3-Figure 6 The dehumidification structure 3 includes a diverter plate 31, a dehumidification rod 32, an air supply pipe 5 and a hot air structure 4. The diverter plate 31 is located below the filter device in the upper barrel 2. The diverter plate 31 is horizontally arranged in the upper barrel 2 and is fixedly connected to the upper barrel 2. A diverter hole 311 is opened on the diverter plate 31. The diverter hole 311 is used to divert the raw material into several streams for transportation. A dehumidification rod 32 is arranged between adjacent diverter holes 311. Each dehumidification rod 32 is fixedly connected to the diverter plate 31. An air flow channel is arranged in each dehumidification rod 32. A plurality of jet holes are evenly arranged on the circumferential side wall of each dehumidification rod 32, and each jet hole is connected to the air flow channel. The air supply pipe 5 is arranged in the diverter plate 31. The air supply pipe 5 is connected to the air flow channel of each dehumidification rod 32. The air supply pipe 5 is connected to the hot air structure 4. The hot air structure 4 is used to heat the air, and the air supply pipe 5 is used to transport the hot air to the air flow channel.

[0036] Reference Figure 5-Figure 7 The dehumidification rod 32 also includes a fixed portion 321 and a rotating portion 322. The fixed portion 321 is fixedly connected to the diverter plate 31, and the rotating portion 322 is rotatably connected to the fixed portion 321. In this embodiment, the rotating portion 322 and the fixed portion 321 are sealed and rotatably connected through a sealed bearing. The rotating portion 322 and the fixed portion 321 are both provided with air flow channels and are connected. The jet hole is provided on the rotating portion 322, and the jet hole is inclined to the axis of the rotating portion 322; an air flow driving device 9 is provided at the connection between the fixed portion 321 and the rotating portion 322, and the air flow The driving device 9 is used to drive the rotating part 322 to rotate. The airflow driving device 9 includes a central axis 91, a support rod 92 and a wind turbine 93. The central axis 91 is arranged in the fixed part 321. There are several support rods 92. Each support rod 92 is arranged between the fixed part 321 and the central axis 91. The two ends of the support rod 92 are fixedly connected to the fixed part 321 and the central axis 91 respectively. The wind turbine 93 is arranged in the rotating part 322. The wind turbine 93 is fixedly connected to the rotating part 322. The wind turbine 93 is rotatably connected to the central axis 91.

[0037] Reference Figure 3-Figure 5 A gas recovery device 10 is also provided in the upper barrel 2, and the gas recovery device 10 includes a gas recovery ring 101 and an exhaust pipe 102. The gas recovery ring 101 is arranged below the diverter plate 31, and the gas recovery ring 101 is fixedly connected to the upper barrel 2. A gas recovery cavity is provided in the gas recovery ring 101, and a plurality of gas recovery holes are provided on the side of the gas recovery ring 101 away from the upper barrel 2. A high-density net is provided at the gas recovery holes, and the high-density net is fixedly connected to the gas recovery ring 101. The gas recovery holes are connected to the gas recovery cavity. The exhaust pipe 102 passes through the side wall of the upper barrel 2 and is fixedly connected to the gas recovery ring 101, and the exhaust pipe 102 is connected to the gas recovery cavity. The end of the exhaust pipe 102 away from the upper barrel 2 is connected to the negative pressure device.

[0038] Reference Figure 8 The hot air structure 4 includes an air inlet pipe 41, a heater 42 and an air outlet pipe 43. The heater 42 is fixedly connected to the loading barrel 2. The air inlet pipe 41 and the air outlet pipe 43 are respectively fixedly connected to the two ends of the heater 42. The air outlet pipe 43 is fixedly connected and communicated with the air supply pipe 5. A fan is provided in the air inlet pipe 41, and the fan is used to deliver airflow to the heater 42.

[0039] Reference Fig. 9 and Fig.10 A filter element 6 is also provided in the air intake pipe 41, and the filter element 6 is used to filter the gas entering the air intake pipe 41; the air intake pipe 41 is also provided with a replacement component 7, and the replacement component 7 is used to replace the filter element 6 without stopping the machine. The replacement component 7 includes a use frame 71 and a reserve frame 72, and the use frame 71 and the reserve frame 72 are fixedly connected. A replacement groove is opened on the air intake pipe 41, and the use frame 71 and the reserve frame 72 are both slidably connected to the replacement groove, and the use frame 71 and the reserve frame 72 are both used to place the filter element 6 to filter the air passing through the air intake pipe 41.

[0040] Reference Figure 9-11 A sealing block 73 is provided between the use frame 71 and the reserve frame 72. The sealing block 73 is fixedly connected to the use frame 71 and the reserve frame 72. A sealing assembly 8 is provided on the sealing block 73. The sealing assembly 8 is used to close the gap between the sealing block 73 and the pipe wall of the intake pipe 41; the sealing assembly 8 includes a sealing strip 81, an elastic member 82 and an adsorbent member 83. A receiving groove is provided on the side wall of the sealing block 73. The sealing strip 81 and the elastic member 82 are both located in the receiving groove. The sealing strip 81 is slidably connected to the receiving groove. The elastic member 82 is located between the sealing strip 81 and the bottom wall of the receiving groove. The two ends of the elastic member 82 are fixedly connected to the sealing strip 81 and the bottom wall of the receiving groove respectively. The elastic member 82 is used to pull the sealing strip 81 back into the receiving groove. The adsorbent member 83 includes a first magnet 831 and a second magnet 832. The first magnet 8 31 is fixedly connected to the sealing strip 81, the second magnet 832 is fixedly connected to the notch of the replacement slot, and the first magnet 831 and the second magnet 832 are attracted to each other; the side of the use frame 71 and the reserve frame 72 away from the sealing block 73 is fixedly connected with a sealing plate 74, and the sealing plate 74 is used to seal the gap between the use frame 71 or the reserve frame 72 and the replacement slot, and the side of the sealing plate 74 close to the intake pipe 41 is fixedly connected with a rubber pad, and the rubber pad is used to seal the gap between the sealing plate 74 and the side wall of the intake pipe 41. In this embodiment, it should be clarified that the magnetic attraction between the first magnet 831 and the second magnet 832 is greater than the force of the elastic member 82 being stretched. When the first magnet 831 and the second magnet 832 are abutted and attracted, the elastic member 82 cannot pull the first magnet 831 and the second magnet 832 apart.

[0041] The implementation principle of the PE extrusion dehumidification device outside the pipeline of the embodiment of the present application is as follows: when using the extrusion dehumidification device, first start the feeding device to convey the material into the upper barrel 2, and after the material is filtered by the filtering device in the feeding barrel 2, it flows down from the diversion hole 311 through the diverter plate 31, so that the diverter plate 31 diverts the material into several streams; at this time, start the hot air structure 4, and start the fan in the air inlet pipe 41, so that the wind generated by the fan is heated by the heater 42 and enters the air delivery pipe 5 through the air outlet pipe 43, and then is finally conveyed to the air flow channel of the dehumidification rod 32 through the air delivery pipe 5. When the air flow passes through the air flow channel of the fixed part 321 and is conveyed to the air flow channel of the rotating part 322, the air flow passes through the wind turbine 93 to drive the wind turbine 93 to rotate, so that the wind The turbine 93 drives the rotating part 322 to rotate, and the airflow entering the rotating part 322 is ejected through the jet hole. Since the jet hole and the axis of the rotating part 322 are inclined, the jet hole further drives the rotating part 322 to rotate, so that the rotating part 322 ejects a rotating airflow, and the heated airflow ejected from the rotating part 322 is used to dry and dehumidify the material flowing down the diverter hole 311. At the same time, the rotating airflow is used to break up the original beam-flowing material, and the moisture in the material is fully dried during the breaking process. Under the action of the negative pressure device, the airflow carries the moisture through the gas recovery hole into the gas recovery chamber in the gas recovery ring 101, and then enters the exhaust pipe 102 through the gas recovery chamber, and finally is transported to the negative pressure device through the exhaust pipe 102.

[0042] When replacing the filter element 6 of the intake pipe 41, first place the new filter element 6 in the reserve frame 72, then push the reserve frame 72 to drive the use frame 71, the sealing block 73 and the reserve frame 72 to slide in the replacement groove at the same time, the sealing block 73 drives the first magnet 831 away from the second magnet 832, so that the first magnet 831 and the second magnet 832 are separated, and after the second magnet 832 loses the adsorption of the first magnet 831, the elastic member 82 drives the sealing strip 81 and the first magnet 831 to slide into the receiving groove under the action of the elastic force, so that the sealing strip 81 and the first magnet 831 are completely located in the receiving groove; at this time, the use frame 71 gradually slides out of the intake pipe 41, and the use frame 71 drives the sealing plate 74 connected to the use frame 71 away from the intake pipe 41. The spare frame gradually slides into the intake pipe 41, and the sealing plate 74 connected to the spare frame approaches the intake pipe 41. As the sealing plate 74 of the spare frame abuts against the side wall of the intake pipe 41, the rubber pad is used to seal the gap between the sealing plate 74 and the side wall of the intake pipe 41. At the same time, the sealing block 73 is located at the tube wall on the other side of the intake pipe 41. At this time, the second magnet 832 fixed at the notch of the replacement slot absorbs the first magnet 831, so that the first magnet 831 drives the sealing strip 81 to slide outward in the accommodating slot, so that the first magnet 831 abuts against the second magnet 832 and drives the sealing strip 81 to seal the gap between the sealing block 73 and the tube wall of the intake pipe 41. Finally, the filter element 6 that has reached the end of its service life is taken out from the use frame 71.

[0043] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A PE extrusion dehumidification device outside a pipeline, comprising a body (1), a feeding cylinder (2) being vertically arranged inside the body (1), characterized in that: The loading barrel (2) is provided with a dehumidification structure (3), the dehumidification structure (3) comprising a diverter plate (31), a dehumidification rod (32), an air delivery pipe (5) and a hot air structure (4), the diverter plate (31) is fixedly connected to the loading barrel (2), a diverter hole (311) is provided on the diverter plate (31), the diverter hole (311) is used to divert the raw material into a plurality of streams for transportation, a dehumidification rod (32) is provided between adjacent diverter holes (311), and each dehumidification rod (32) is connected to the diverter plate (311). 31), each dehumidification rod (32) is provided with an air flow channel, a plurality of jet holes are evenly arranged on the circumferential side wall of each dehumidification rod (32), each jet hole is connected to the air flow channel, an air supply pipe (5) is arranged in the diverter plate (31), the air supply pipe (5) is connected to the air flow channel of each dehumidification rod (32), the air supply pipe (5) is connected to the hot air structure (4), the hot air structure (4) is used to heat the air, and the air supply pipe (5) is used to transport the hot air to the air flow channel; The hot air structure (4) comprises an air inlet pipe (41), a heater (42) and an air outlet pipe (43); the heater (42) is fixedly connected to the loading barrel (2); the air inlet pipe (41) and the air outlet pipe (43) are respectively fixedly connected to two ends of the heater (42); the air outlet pipe (43) is fixedly connected to and communicates with the air delivery pipe (5); a fan is provided in the air inlet pipe (41) for delivering air flow to the heater (42); The dehumidification rod (32) further comprises a fixed portion (321) and a rotating portion (322), wherein the fixed portion (321) is fixedly connected to the diverter plate (31), and the rotating portion (322) is rotatably connected to the fixed portion (321), air flow channels are arranged in the rotating portion (322) and the fixed portion (321) and are in communication with each other, and an air flow driving device (9) is arranged at the connection between the fixed portion (321) and the rotating portion (322), and the air flow driving device (9) is used to drive the rotating portion (322) to rotate, and the air injection hole is arranged on the rotating portion (322); The airflow driving device (9) comprises a central shaft (91), a support rod (92) and a wind turbine (93); the central shaft (91) is arranged in a fixed part (321); a plurality of support rods (92) are arranged, each support rod (92) is arranged between the fixed part (321) and the central shaft (91); two ends of the support rod (92) are fixedly connected to the fixed part (321) and the central shaft (91), respectively; the wind turbine (93) is arranged in a rotating part (322); the wind turbine (93) is fixedly connected to the rotating part (322); and the wind turbine (93) is rotationally connected to the central shaft (91).

2. The PE extrusion dehumidification device outside the pipeline according to claim 1 is characterized in that: A filter element (6) is also provided in the air intake pipe (41), and the filter element (6) is used to filter the gas entering the air intake pipe (41).

3. The PE extrusion dehumidification device outside the pipeline according to claim 2 is characterized in that: The air intake pipe (41) is further provided with a replacement assembly (7), the replacement assembly (7) being used for replacing the filter element (6), the replacement assembly (7) comprising a use frame (71) and a reserve frame (72), the use frame (71) and the reserve frame (72) being fixedly connected, a replacement slot being provided on the air intake pipe (41), the use frame (71) and the reserve frame (72) both being slidably connected to the replacement slot, and the use frame (71) and the reserve frame (72) both being used for placing the filter element (6) to filter the air passing through the air intake pipe (41).

4. The PE extrusion dehumidification device outside the pipeline according to claim 3 is characterized in that: A sealing block (73) is provided between the use frame (71) and the reserve frame (72); the sealing block (73) is fixedly connected to both the use frame (71) and the reserve frame (72); a sealing assembly (8) is provided on the sealing block (73); the sealing assembly (8) is used to seal a gap between the sealing block (73) and a pipe wall of the air intake pipe (41); The sealing assembly (8) comprises a sealing strip (81), an elastic member (82) and an adsorption member (83). A receiving groove is provided on the side wall of the sealing block (73). The sealing strip (81) and the elastic member (82) are both located in the receiving groove. The sealing strip (81) is slidably connected to the receiving groove. The elastic member (82) is located between the sealing strip (81) and the bottom wall of the receiving groove. Two ends of the elastic member (82) are respectively fixedly connected to the sealing strip (81) and the bottom wall of the receiving groove. The elastic member (82) is used to pull the sealing strip (81) back into the receiving groove. The adsorption member (83) comprises a first magnet (831) and a second magnet (832). The first magnet (831) is fixedly connected to the sealing strip (81). The second magnet (832) is fixedly connected to the notch of the replacement groove. The first magnet (831) and the second magnet (832) are adsorbed to each other.

5. The PE extrusion dehumidification device outside the pipeline according to claim 4 is characterized in that: A sealing plate (74) is fixedly connected to the side of the use frame (71) and the reserve frame (72) away from the sealing block (73), and the sealing plate (74) is used to seal the gap between the use frame (71) or the reserve frame (72) and the replacement slot.

6. The PE extrusion dehumidification device outside the pipeline according to claim 1 is characterized in that: The air injection hole on the rotating part (322) is arranged obliquely with respect to the axis of the rotating part (322).

7. The PE extrusion dehumidification device outside the pipeline according to claim 1 is characterized in that: A gas recovery device (10) is also provided in the upper barrel (2), and the gas recovery device (10) comprises a gas recovery ring (101) and an exhaust pipe (102). The gas recovery ring (101) is provided below the diverter plate (31), the gas recovery ring (101) is fixedly connected to the upper barrel (2), a gas recovery chamber is provided in the gas recovery ring (101), a plurality of gas recovery holes are provided on a side of the gas recovery ring (101) away from the upper barrel (2), the gas recovery holes are connected to the gas recovery chamber, the exhaust pipe (102) passes through the side wall of the upper barrel (2) and is fixedly connected to the gas recovery ring (101), the exhaust pipe (102) is connected to the gas recovery chamber, and one end of the exhaust pipe (102) away from the upper barrel (2) is connected to a negative pressure device.

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