Polyethylene film extruder

Abstract

The utility model relates to a polyethylene film extruder, relates to film extruder technical field, including frame body, landing leg, extrusion mechanism, dust removal mechanism and first funnel, landing leg and extrusion mechanism are both provided on frame body, dust removal mechanism includes cleaning bin, blower, suction fan and second funnel, second funnel is communicated with extrusion mechanism, the second funnel is fixedly connected with the cleaning bin, a first feeding port is formed in the cleaning bin, the first funnel is communicated with the cleaning bin through the first feeding port, a plurality of discharging holes are formed in the peripheral face of the cleaning bin, the cleaning bin is communicated with the second funnel through the discharging holes, and an air inlet and an air outlet are further formed in the cleaning bin. The air blower and the suction fan are both arranged on the frame body, the air blower is communicated with the air inlet of the cleaning bin, and the suction fan is communicated with the air outlet of the cleaning bin. The dust removal mechanism is arranged, so that dust adhered to the surface of a production raw material can be cleaned before the production raw material enters the extrusion mechanism, and the quality of a product is improved.

Description

Technical Field

[0001] This application relates to the field of extruder technology, and more particularly to a polyethylene film extruder. Background Technology

[0002] A film extruder is a device used to produce films. Its principle is to shear, heat and compress plastic granules, so that the plastic granules melt and are finally extruded from the extrusion die. The extruded raw material is cooled and shaped by a cooling mechanism to become a film.

[0003] Currently, Chinese utility model patent application CN221067141U, published on June 4, 2024, discloses a plastic film extruder, including an extruder body with an exhaust port. A vacuum pump is connected to the extruder body via an exhaust pipe. One end of the exhaust pipe is connected to the exhaust port, and the other end is connected to the vacuum pump. A separation mechanism for discharging material is provided in the middle of the exhaust pipe. This utility model allows material entering the exhaust pipe to be discharged during the exhaust process via the separation mechanism, preventing material from clogging the exhaust pipe and affecting the normal operation of the vacuum pump.

[0004] One type of plastic film extruder in the related technology does not have a dust removal device for the raw materials. Since the raw materials come into contact with air during transportation and storage, dust will adhere to their surface. During the extrusion process of plastic film, the dust contained in the raw materials will reduce the quality of the extruded film. Utility Model Content

[0005] This application provides a polyethylene film extruder that can improve the technical problem in related technologies of being unable to remove dust adhering to the surface of production raw materials.

[0006] This application provides a polyethylene film extruder, including: a frame, support legs, an extrusion mechanism, a dust removal mechanism, and a first funnel. The support legs are disposed at the bottom of the frame, the extrusion mechanism is disposed on the frame, and the dust removal mechanism includes a cleaning chamber, a blower, a suction fan, and a second funnel. The discharge end of the second funnel passes through the frame and communicates with the extrusion mechanism. The cleaning chamber is disposed on the feed end of the second funnel and is fixedly connected to the outer peripheral surface of the cleaning chamber. The cleaning chamber has a first feed inlet. The first funnel is disposed on the cleaning chamber, and the discharge end of the first funnel communicates with the cleaning chamber through the first feed inlet. The outer peripheral surface of the cleaning chamber has multiple discharge holes, and the cleaning chamber communicates with the feed end of the second funnel through the discharge holes. The cleaning chamber also has an air inlet and an air outlet. The blower and the suction fan are both disposed on the frame. The air outlet of the blower is connected to the air inlet of the cleaning chamber through a connecting pipe, and the air inlet of the suction fan is connected to the air outlet of the cleaning chamber through a connecting pipe.

[0007] The technical solution described above in this application embodiment has at least the following technical effects: When the extruder is working, the operator adds production raw materials into the first funnel. The production raw materials enter the cleaning chamber through the discharge end of the first funnel. The blower blows air into the cleaning chamber through the air inlet, and the suction fan draws air from the cleaning chamber through the air outlet, thereby forming a one-way air duct inside the cleaning chamber. The flowing air inside the cleaning chamber blows the dust adhering to the surface of the production raw materials into the air and carries the dust away from the cleaning chamber through the air outlet, thereby improving the surface cleanliness of the production raw materials. The cleaned production raw materials fall into the second funnel through the discharge hole and enter the extrusion mechanism through the discharge end of the second funnel for extrusion operation. The cleaning of the production raw materials improves the quality of the film extruded by the extrusion mechanism.

[0008] The polyethylene film extruder provided in this application embodiment is equipped with a dust removal mechanism, which can clean the dust adhering to the surface of the raw materials before they enter the extrusion mechanism, thereby improving the quality of the products.

[0009] In some embodiments, a bracket is provided inside both the air inlet and the air outlet. The bracket is fixedly connected to the inner circumferential surface of the cleaning chamber. The dust removal mechanism also includes a stirring plate and a second motor. The stirring plate is rotatably connected to the bracket. The second motor is mounted on the frame. The output end of the second motor passes through the cleaning chamber and is rotatably connected to it. A first bevel gear is provided at the end of the stirring plate near the second motor. A second bevel gear is provided at the output end of the second motor. The first bevel gear and the second bevel gear mesh and transmit power.

[0010] In some embodiments, a sieve plate is provided inside both the air inlet and the air outlet, and the outer peripheral surface of the sieve plate is fixedly connected to the inner wall of the cleaning chamber.

[0011] In some embodiments, a dust collection mechanism is provided at the end of the cleaning chamber near the suction fan. The dust collection mechanism includes a first connector, a second connector, a fixing ring, and a filter element. Threads are provided on the outer circumferential surfaces of both ends of the first connector, the inner circumferential surface of the cleaning chamber near the second motor, and the inner circumferential surface of the fixing ring. One end of the first connector is threadedly connected to the end of the cleaning chamber near the second motor, and the other end of the first connector is threadedly connected to the fixing ring. The second connector is rotatably connected inside the fixing ring, and one end of the second connector abuts against the first connector. The end of the second connector away from the first connector is connected to the air inlet of the suction fan through a connecting pipe. The filter element is disposed inside the first connector, and the outer circumferential surface of the filter element is fixedly connected to the inner circumferential surface of the first connector.

[0012] In some embodiments, the extrusion mechanism includes an extrusion chamber, a first motor, a spiral conveyor, a drive shaft, and an extrusion die. The extrusion die is fixedly connected to a frame. One end of the extrusion chamber has a discharge port, and the other end of the extrusion chamber is fixedly connected to the feed port of the extrusion die through the discharge port. The discharge port communicates with the feed port of the extrusion die. The other end of the extrusion chamber is fixedly connected to the frame. Multiple heating rings are fitted on the outer circumferential surface of the extrusion chamber. The spiral conveyor is rotatably connected inside the extrusion chamber. One end of the drive shaft passes through the extrusion chamber and the frame and is fixedly connected to the spiral conveyor. The first motor is located at the bottom of the frame. The output end of the first motor is connected to the end of the drive shaft away from the spiral conveyor through a drive wheel and a drive belt. The end of the extrusion chamber near the first motor has a second feed port, and the discharge end of the second funnel communicates with the interior of the extrusion chamber through the second feed port.

[0013] In some embodiments, a filter plate is fitted on the outer circumferential surface of the spiral conveyor rod, and the outer circumferential surface of the filter plate is rotatably connected to the inner circumferential surface of the extrusion chamber.

[0014] In some embodiments, the frame is provided with an isolation net, and the extrusion chamber is located inside the isolation net. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the overall structure of a polyethylene film extruder provided in an embodiment of this application;

[0017] Figure 2 for Figure 1 Enlarged view of part A;

[0018] Figure 3 A cross-sectional view of a polyethylene film extruder provided in an embodiment of this application;

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of part A;

[0020] Figure 5 for Figure 3 Enlarged diagram of part B;

[0021] Figure 6 This is a cross-sectional view of the first funnel, the dust removal mechanism, and the second funnel.

[0022] Figure 7 for Figure 6 Enlarged schematic diagram of part A.

[0023] The following are the labeling elements in the figure:

[0024] 1. Frame; 2. Support legs; 31. Extrusion chamber; 311. Discharge port; 312. Second feed port; 32. First motor; 33. Screw conveyor; 34. Extrusion die; 35. Heating ring; 36. Filter plate; 37. Drive shaft; 41. Cleaning chamber; 411. First feed port; 412. Discharge hole; 413. Air inlet; 414. Air outlet; 42. Blower; 43. Suction fan; 44. Second funnel; 45. Support; 46. Stirring plate; 461. First bevel gear; 47. Second motor; 471. Second bevel gear; 48. Screen plate; 491. First connector; 492. Second connector; 493. Fixing ring; 494. Filter element; 5. First funnel; 6. Isolation net. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0031] It should be noted that in this application, the words "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of words such as "in some embodiments," "exemplarily," and "for example" is intended to present related concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0032] A film extruder is a device used to produce films. Its principle is to shear, heat and compress plastic granules, so that the plastic granules melt and are finally extruded from the extrusion die. The extruded raw material is cooled and shaped by a cooling mechanism to become a film.

[0033] A plastic film extruder, disclosed in CN221067141U, includes an extruder body with an exhaust port. A vacuum pump is connected to the extruder body via an exhaust pipe. One end of the exhaust pipe is connected to the exhaust port, and the other end is connected to the vacuum pump. A separation mechanism for discharging material is provided in the middle of the exhaust pipe. This invention allows the separation mechanism to discharge material entering the exhaust pipe during the exhaust process, preventing material blockage and ensuring the normal operation of the vacuum pump.

[0034] However, one type of plastic film extruder in the related technology is not equipped with a dust removal device for the raw materials. Since the raw materials come into contact with air during transportation and storage, dust will adhere to their surface. During the extrusion process of plastic film, the dust contained in the raw materials will reduce the quality of the extruded film.

[0035] Based on this, in order to improve the problems in the related technologies, the embodiments of this application provide the following solutions.

[0036] Please refer to the following: Figures 1 to 7 This application provides a polyethylene film extruder, including a frame 1, support legs 2, an extrusion mechanism, a dust removal mechanism, and a first funnel 5. The dust removal mechanism is used to clean the production raw materials, and the extrusion mechanism is used to perform film extrusion on the production raw materials cleaned by the dust removal mechanism.

[0037] Please refer to the following: Figures 1 to 7The support leg 2 is located at the bottom of the frame 1, and the extrusion mechanism is located on the frame 1. The dust removal mechanism includes a cleaning chamber 41, a blower 42, a suction fan 43, and a second funnel 44. The discharge end of the second funnel 44 passes through the frame 1 and communicates with the extrusion mechanism. The cleaning chamber 41 is located on the feed end of the second funnel 44, and the feed end of the second funnel 44 is fixedly connected to the outer peripheral surface of the cleaning chamber 41. A first feed inlet 411 is provided on the cleaning chamber 41. A first funnel 5 is provided on the cleaning chamber 41, and the discharge end of the first funnel 5 communicates with the cleaning chamber 41 through the first feed inlet 411. Multiple discharge holes 412 are provided on the outer peripheral surface of the cleaning chamber 41. The discharge hole 412 is connected to the feed end of the second funnel 44. The cleaning chamber 41 is also provided with an air inlet 413 and an air outlet 414. Both the air inlet 413 and the air outlet 414 are provided with a screen plate 48. The outer circumferential surface of the screen plate 48 is fixedly connected to the inner wall of the cleaning chamber 41. Both the air inlet 413 and the air outlet 414 are provided with a bracket 45. The bracket 45 is fixedly connected to the inner circumferential surface of the cleaning chamber 41. The dust removal mechanism also includes a stirring plate 46 and a second motor 47. The stirring plate 46 is rotatably connected to the bracket 45. The second motor 47 is set on the frame 1. The output end of the second motor 47 passes through the cleaning chamber 41 and is rotatably connected to the cleaning chamber 41. Next, a first bevel gear 461 is provided at the end of the stirring plate 46 near the second motor 47, and a second bevel gear 471 is provided at the output end of the second motor 47. The first bevel gear 461 and the second bevel gear 471 mesh and drive each other. The blower 42 and the suction fan 43 are both mounted on the frame 1. The air outlet of the blower 42 is connected to the air inlet 413 of the cleaning chamber 41 through a connecting pipe. A dust collection mechanism is provided at the end of the cleaning chamber 41 near the suction fan 43. The dust collection mechanism includes a first connector 491, a second connector 492, a fixing ring 493, and a filter element 494. The outer circumference of both ends of the first connector 491 and the cleaning chamber 41 near the second motor 47 are connected to the dust collection mechanism. Threads are provided on the inner circumferential surface of one end of the first connector 491 and the inner circumferential surface of the fixing ring 493. One end of the first connector 491 is threadedly connected to the end of the cleaning chamber 41 near the second motor 47, and the other end of the first connector 491 is threadedly connected to the fixing ring 493. The second connector 492 is rotatably connected inside the fixing ring 493. One end of the second connector 492 abuts against the first connector 491, and the end of the second connector 492 away from the first connector 491 is connected to the air inlet of the suction fan 43 through a connecting pipe. The filter element 494 is disposed inside the first connector 491, and the outer circumferential surface of the filter element 494 is fixedly connected to the inner circumferential surface of the first connector 491.

[0038] As can be seen from the above, in the polyethylene film extruder provided in this application embodiment, when the extruder is working, the operator adds production raw materials into the first funnel 5. The production raw materials enter the cleaning chamber 41 through the discharge end of the first funnel 5. The blower 42 blows air into the cleaning chamber 41 through the air inlet 413, and the suction fan 43 draws air from the cleaning chamber 41 through the air outlet 414, thereby forming a one-way air duct inside the cleaning chamber 41 from the air inlet 413 to the air outlet 414. The flowing air inside the cleaning chamber 41 will enter the surface of the production raw materials in the cleaning chamber 41. Adhered dust is blown into the air and carried away from the cleaning chamber 41 through the air outlet 414, improving the surface cleanliness of the raw materials. The sieve plate 48 prevents raw materials from entering the air outlet 414 or air inlet 413 during extruder operation, thus preventing interference with the operation of the blower 42 or suction fan 43. When the flowing air carrying dust passes through the filter element 494, the filter element 494 removes the dust from the flowing air, ensuring the cleanliness of the air discharged through the suction fan 43 and avoiding pollution of the surrounding air. The cleaned raw materials fall into the second funnel through the discharge hole 412. Inside the filter element 44, the output of the second motor 47 drives the agitator 46 to rotate continuously, stirring and cleaning the raw materials inside the cleaning chamber 41. This allows for more thorough cleaning of the raw materials. The agitation of the agitator 46 also prevents the raw materials from accumulating inside the cleaning chamber 41 and clogging the discharge hole 412. The cleaned raw materials fall through the discharge hole 412 into the second funnel 44 and enter the extrusion mechanism through the discharge end of the second funnel 44 for extrusion. The cleaning of the raw materials improves the quality of the film extruded by the extrusion mechanism. After long-term operation of the extruder, the filter element 494... The accumulation of dust in the filter element 494 reduces its filtration efficiency. At this time, the operator can rotate the retaining ring 493 to separate the retaining ring 493 from the first connector 491, then rotate the first connector 491 to remove it from the cleaning chamber 41 and clean the filter element 494 inside the first connector 491. After cleaning, reconnect the first connector 491 to the cleaning chamber 41 and rotate the retaining ring 493 to make the second connector 492 press against the first connector 491, thus completing the cleaning of the filter element 494 and ensuring the long-term working efficiency of the extruder.

[0039] In some embodiments, please refer to the following: Figures 1 to 5The extrusion mechanism includes an extrusion chamber 31, a first motor 32, a screw conveyor 33, a drive shaft 37, and an extrusion die 34. The extrusion die 34 is fixedly connected to the frame 1. One end of the extrusion chamber 31 has a discharge port 311, which is fixedly connected to the feed port of the extrusion die 34. The discharge port 311 communicates with the feed port of the extrusion die 34. The other end of the extrusion chamber 31 is fixedly connected to the frame 1. Multiple heating rings 35 are fitted on the outer circumference of the extrusion chamber 31. The screw conveyor 33 is rotatably connected inside the extrusion chamber 31. A filter plate 36 is fitted on the outer circumferential surface of the feeding rod 33. The outer circumferential surface of the filter plate 36 is rotatably connected to the inner circumferential surface of the extrusion chamber 31. One end of the drive shaft 37 passes through the extrusion chamber 31 and the frame 1 and is fixedly connected to the screw conveyor 33. The first motor 32 is located at the bottom of the frame 1. The output end of the first motor 32 is connected to the end of the drive shaft 37 away from the screw conveyor 33 through the drive wheel and the drive belt. A second feed port 312 is opened at the end of the extrusion chamber 31 near the first motor 32. The discharge end of the second funnel 44 is connected to the interior of the extrusion chamber 31 through the second feed port 312.

[0040] With this configuration, the output end of the first motor 32 drives the drive shaft 37 to rotate via the drive wheel and drive belt. The drive shaft 37 drives the screw conveyor 33 to rotate. The production raw material cleaned by the cleaning mechanism enters the extrusion chamber 31 through the discharge end of the second funnel 44. The screw conveyor 33 rotates continuously to transport the production raw material to the discharge port 311. The heating ring 35 heats the extrusion chamber 31. The production raw material gradually melts during the conveying process. When the melted production raw material comes into contact with the filter plate 36, the filter plate 36 allows the melted production raw material to pass through and blocks the unmelted production raw material, causing it to remain on one side of the filter plate 36 until it is fully melted. This avoids the unmelted production raw material from clogging the extrusion die 34 or reducing the quality of the extruded plastic film.

[0041] Optionally, in some embodiments, please refer to Figure 1 An isolation net 6 is installed on the frame 1, and the extrusion chamber 31 is located inside the isolation net 6.

[0042] With this configuration, the heating ring 35 and the surface of the extrusion chamber 31 will maintain a high temperature when the extruder is working, and the isolation net 6 can prevent workers from being burned by accidentally touching the extrusion chamber 31 or the heating ring 35.

[0043] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A polyethylene film extruder, characterized in that: The device includes a frame (1), support legs (2), an extrusion mechanism, a dust removal mechanism, and a first funnel (5). The support legs (2) are located at the bottom of the frame (1), and the extrusion mechanism is located on the frame (1). The dust removal mechanism includes a cleaning chamber (41), a blower (42), a suction fan (43), and a second funnel (44). The discharge end of the second funnel (44) passes through the frame (1) and communicates with the extrusion mechanism. The cleaning chamber (41) is located on the feed end of the second funnel (44), and the feed end of the second funnel (44) is fixedly connected to the outer circumferential surface of the cleaning chamber (41). The cleaning chamber (41) has a first feed inlet (411), and the first funnel (5) is located in the cleaning chamber (41). Above, the discharge end of the first funnel (5) is connected to the cleaning chamber (41) through the first feed port (411). The cleaning chamber (41) has multiple discharge holes (412) on its outer circumferential surface. The cleaning chamber (41) is connected to the feed end of the second funnel (44) through the discharge holes (412). The cleaning chamber (41) is also provided with an air inlet (413) and an air outlet (414). The blower (42) and the suction fan (43) are both installed on the frame (1). The air outlet of the blower (42) is connected to the air inlet (413) of the cleaning chamber (41) through a connecting pipe. The air inlet of the suction fan (43) is connected to the air outlet (414) of the cleaning chamber (41) through a connecting pipe.

2. A polyethylene film extruder according to claim 1, characterized in that: Both the air inlet (413) and the air outlet (414) are equipped with brackets (45). The brackets (45) are fixedly connected to the inner circumferential surface of the cleaning chamber (41). The dust removal mechanism also includes a stirring plate (46) and a second motor (47). The stirring plate (46) is rotatably connected to the bracket (45). The second motor (47) is mounted on the frame (1). The output end of the second motor (47) passes through the cleaning chamber (41) and is rotatably connected to the cleaning chamber (41). A first bevel gear (461) is provided at the end of the stirring plate (46) near the second motor (47). A second bevel gear (471) is provided at the output end of the second motor (47). The first bevel gear (461) and the second bevel gear (471) mesh and drive each other.

3. A polyethylene film extruder according to claim 2, characterized in that: Both the air inlet (413) and the air outlet (414) are equipped with sieve plates (48), and the outer circumferential surface of the sieve plates (48) is fixedly connected to the inner wall of the cleaning chamber (41).

4. A polyethylene film extruder according to any one of claims 1-3, characterized in that: A dust collection mechanism is provided at one end of the cleaning chamber (41) near the suction fan (43). The dust collection mechanism includes a first connector (491), a second connector (492), a fixing ring (493), and a filter element (494). Threads are provided on the outer circumferential surfaces of both ends of the first connector (491), the inner circumferential surface of the cleaning chamber (41) near the second motor (47), and the inner circumferential surface of the fixing ring (493). One end of the first connector (491) is threadedly connected to the end of the cleaning chamber (41) near the second motor (47). The other end of the connector (491) is threadedly connected to the fixing ring (493). The second connector (492) is rotatably connected inside the fixing ring (493). One end of the second connector (492) abuts against the first connector (491). The end of the second connector (492) away from the first connector (491) is connected to the air inlet of the suction fan (43) through a connecting pipe. The filter element (494) is disposed inside the first connector (491). The outer circumferential surface of the filter element (494) is fixedly connected to the inner circumferential surface of the first connector (491).

5. A polyethylene film extruder according to claim 4, characterized in that: The extrusion mechanism includes an extrusion chamber (31), a first motor (32), a screw conveyor (33), a drive shaft (37), and an extrusion die (34). The extrusion die (34) is fixedly connected to the frame (1). One end of the extrusion chamber (31) has a discharge port (311), which is fixedly connected to the feed port of the extrusion die (34) through the discharge port (311). The discharge port (311) communicates with the feed port of the extrusion die (34). The other end of the extrusion chamber (31) is fixedly connected to the frame (1). Multiple heating rings (35) are fitted on the outer circumferential surface of the extrusion chamber (31). The spiral conveyor rod (33) is rotatably connected inside the extrusion chamber (31). One end of the drive shaft (37) passes through the extrusion chamber (31) and the frame (1) and is fixedly connected to the spiral conveyor rod (33). The first motor (32) is located at the bottom of the frame (1). The output end of the first motor (32) is connected to the end of the drive shaft (37) away from the spiral conveyor rod (33) through the drive wheel and the drive belt. The extrusion chamber (31) has a second feed port (312) at the end near the first motor (32). The discharge end of the second funnel (44) is connected to the interior of the extrusion chamber (31) through the second feed port (312).

6. A polyethylene film extruder according to claim 5, characterized in that: A filter plate (36) is fitted on the outer circumferential surface of the spiral conveyor (33), and the outer circumferential surface of the filter plate (36) is rotatably connected to the inner circumferential surface of the extrusion chamber (31).

7. A polyethylene film extruder according to claim 6, characterized in that: An isolation net (6) is provided on the frame (1), and the extrusion chamber (31) is located inside the isolation net (6).

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