Twin-screw extruder for producing grass-proof cloth

Abstract

The double-screw extruder comprises an extruder body, the input end of the extruder body is communicated with a conveying pipe used for conveying raw materials for producing the grass-proof cloth, the top of the conveying pipe is communicated with a feeding hopper, and the top of one side of the feeding hopper is fixedly connected with a semicircular disc. A cleaning assembly used for cleaning the inner wall of the feeding hopper is arranged at the top of the semicircular disc, and a sealing assembly used for sealing the opening of the feeding hopper is arranged on one side of the semicircular disc. Through the arrangement of the cleaning assembly, the scraping plate can continuously scrape the inner wall of the feeding hopper, attached raw materials are removed in time, raw material accumulation is avoided, and the service life of the feeding hopper is prolonged. Meanwhile, through the cooperation of the spring, the sliding disc and the push rod, the position of the scraper blade can be adjusted in a self-adaptive mode according to the actual situation of the inner wall of the feeding hopper, the scraper blade is always in close contact with the inner wall, cleaning can be effectively conducted, and the stripping effect on raw materials attached to the inner wall of the feeding hopper is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of extruder for grass preventing cloth production, concretely to a double screw extruder for grass preventing cloth production. BACKGROUND

[0002] As an agricultural covering material, grass preventing cloth must have the characteristics of ultraviolet resistance, weather resistance, air permeability and high mechanical strength, and its production raw materials are mainly plastics such as polypropylene and polyethylene, and functional additives such as anti-aging agents and color master batches are often added. At the same time, due to its excellent mixing and plasticizing capacity, the double screw extruder becomes the core equipment for the granulation and film forming of grass preventing cloth master batch.

[0003] At present, a double screw granulating extruder with the publication number CN221892340U is disclosed, which comprises an extruder body, a first motor installed on the surface of the extruder body, a first gear connected with the output end of the first motor and penetrating through the extruder body, a second gear meshing with the surface of the first gear, a first spiral rod installed on the surface of the first gear, a second spiral rod installed on the surface of the second gear, a feeding port installed on the top of the extruder body, and a stirring and conveying mechanism installed in the feeding port. The cooperation of the supporting rod, the mounting plate, the second motor, the rotating rod, the connecting block, the stirring plate and the spiral blade can effectively strip the raw materials adhering to the surface of the feeding port, and the spiral blade also improves the feeding efficiency. This kind of double screw granulating extruder has the advantages of simple and reasonable structure, novel design, easy operation and high practicability, and is convenient for widespread use.

[0004] However, the double screw granulating extruder still has some problems in use. In actual use, since the stirring plate is in close contact with the feeding port, it is likely that the contact surface between the stirring plate and the feeding port will be gradually worn out in a long time of friction, which may cause a gap between the stirring plate and the feeding port, affecting the stripping effect of the raw materials adhering to the surface of the feeding port. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a double screw extruder for grass preventing cloth production to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0007] A double screw extruder for grass preventing cloth production, comprising an extruder body, wherein the input end of the extruder body is connected with a conveying pipe for conveying grass preventing cloth production raw materials, the top of the conveying pipe is connected with a feeding hopper, the top of one side of the feeding hopper is fixedly connected with a semicircular disc, the top of the semicircular disc is provided with a cleaning assembly for cleaning the inner wall of the feeding hopper, and one side of the semicircular disc is provided with a sealing assembly for sealing the mouth of the feeding hopper.

[0008] The cleaning assembly comprises installation shells arranged on both sides of the inner cavity of the feeding hopper, the opposite sides of the two groups of installation shells are open, the inner cavities of the two groups of installation shells are slidably connected with installation plates, the opposite side surfaces of the two groups of installation plates are connected with scrapers through detachable assemblies, the two groups of scrapers respectively contact the corresponding side inner walls of the feeding hopper, the middle parts of the opposite sides of the two groups of installation shells are fixedly connected with installation barrels, the mouth parts of the two groups of installation barrels are oppositely arranged, the inner cavities of the two groups of installation barrels are respectively provided with springs, the bottom parts of the two groups of installation barrels are slidably connected with sliding discs, the opposite ends of the two groups of sliding discs are fixedly connected with push rods, the end parts of the two groups of push rods respectively sequentially penetrate the installation barrels and the installation shells and are fixedly connected to the corresponding middle parts of the corresponding installation plates, the mouth parts of the two groups of installation barrels are provided with anti-falling assemblies for closing the mouth parts of the installation barrels to prevent the springs from falling out, the two ends of the two groups of springs respectively contact the end surface of the corresponding closing assembly and the corresponding sliding disc, and the top part of the feeding hopper is provided with a driving assembly for driving the two groups of installation shells to drive the two groups of scrapers to scrape the inner walls of the feeding hopper.

[0009] As a preferred technical scheme, the driving assembly comprises an installation frame fixedly installed on the top of the semicircular disc, a driving motor is fixedly installed on the top of the installation frame, a driving rod is key-connected to the output shaft of the driving motor, the end part of the driving rod penetrates the installation frame downward and extends into the inner cavity of the feeding hopper, the upper and lower parts of the opposite sides of the installation shell are fixedly connected with connecting plates, the end parts of the two groups of connecting plates on the same side are fixedly connected to the corresponding side surfaces of the driving rod, the middle part of the conveying pipe is provided with a connecting rod, a spiral vane dragon is fixedly sleeved on the surface of the connecting rod, and the top of the connecting rod is fixedly connected to the bottom of the driving rod.

[0010] As a preferred technical scheme, the closing assembly comprises a semicircular groove opened on one side of the semicircular disc, a semicircular cover is rotatably sleeved on the surface of the driving rod inside the semicircular groove, a guide hole for communicating the semicircular groove is opened on the top of the semicircular disc, the guide hole is arranged in a semicircular shape, a threaded rod is fixedly connected to the top of the semicircular cover, the top of the threaded rod penetrates the guide hole upward, a fixed nut is threadedly connected to the end part of the threaded rod, and the bottom of the fixed nut contacts the top surface of the semicircular disc.

[0011] As a preferred technical scheme, the anti-falling assembly comprises outer threaded pipes threadedly connected to the mouth parts of the two groups of installation barrels, hexagonal pipes fixedly connected to the mouth parts of the opposite sides of the two groups of outer threaded pipes are convenient for an operator to rotate the outer threaded pipes.

[0012] As a preferred technical solution, the detachable component includes two sets of T-shaped strips respectively fixedly installed on opposite sides of the two sets of scrapers. The opposing surfaces of the two sets of mounting plates are provided with slots for the two sets of T-shaped strips to be inserted. The ends of the two sets of T-shaped strips on the same side are respectively fixedly connected with fixing rings. The top of the two sets of mounting plates is provided with slots for the fixing rings to be engaged. The inner cavity of each set of fixing rings is inserted with fixing bolts. The ends of each set of fixing bolts penetrate downward through the inner cavity of the corresponding side fixing ring and are threaded into the inner cavity of the corresponding side slot.

[0013] As a preferred technical solution, each of the two sets of sliding discs is fixedly connected to a tie rod on one side. The ends of the two sets of tie rods pass through the inner cavities of the corresponding external threaded tube and hexagonal tube and extend to the outside of the mounting cylinder.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Through the design of the cleaning components, the scraper can continuously scrape the inner wall of the feed hopper, promptly removing the attached raw materials, preventing material accumulation, and ensuring that the feed hopper remains unobstructed. At the same time, the cooperation of the spring, sliding plate, and push rod allows the scraper to adaptively adjust its position according to the actual situation of the inner wall of the feed hopper, always maintaining close contact with the inner wall, effectively cleaning and ensuring the stripping effect of raw materials attached to the inner wall of the feed hopper.

[0016] 2. This utility model, through the setting of the anti-detachment component, allows the external threaded tube to be easily screwed in or out by rotating the hexagonal tube, thereby opening or closing the installation cylinder opening. This facilitates the inspection, maintenance, or replacement of the spring inside the installation cylinder, reducing the difficulty of equipment maintenance. At the same time, screwing the external threaded tube into the installation cylinder further compresses the spring, and through the transmission of the sliding disc and push rod, it is transmitted to the scraper. This increased elasticity increases the contact pressure between the scraper and the inner wall of the feed hopper, thereby improving the contact force between the scraper and the inner wall. When scraping off the raw materials for weed control adhering to the inner wall of the feed hopper, the scraper can more effectively scrape off the raw materials, enhancing the cleaning effect.

[0017] 3. With the detachable component, the scraper can be easily and quickly disassembled and installed by simply unscrewing the fixing bolts and pulling or inserting the T-shaped strip from the slot, thus reducing equipment maintenance time. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the twin-screw extruder used for producing weed control fabric according to this utility model.

[0019] Figure 2 This is a cross-sectional structural diagram of the feed hopper of this utility model;

[0020] Figure 3 This is a cross-sectional view of the mounting shell of this utility model;

[0021] Figure 4 This is a schematic diagram of the card slot structure of this utility model.

[0022] In the picture:

[0023] 100. Extruder body; 101. Conveying pipe; 102. Feed hopper; 103. Guide hole; 104. Semi-circular cover; 105. Threaded rod; 106. Fixing nut; 107. Semi-circular groove; 108. Semi-circular disc;

[0024] 200. Drive motor; 201. Mounting bracket; 202. Drive rod; 203. Connecting plate; 204. Connecting rod; 205. Spiral blade;

[0025] 300. Mounting housing; 301. Scraper; 304. Mounting plate;

[0026] 400. Mounting cylinder; 401. Sliding disc; 402. Push rod; 403. Pull rod; 404. Hexagonal tube; 405. Externally threaded tube; 406. Spring;

[0027] 500, Semicircular pull ring; 501, Slot; 502, Fixing bolt; 503, T-shaped strip; 504, Fixing ring; 505, Card slot. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-4 This embodiment provides a twin-screw extruder for producing weed control fabric, including an extruder body 100. The input end of the extruder body 100 is connected to a conveying pipe 101 for conveying raw materials for producing weed control fabric. The top of the conveying pipe 101 is connected to a feed hopper 102. A semi-circular disk 108 is fixedly connected to the top of one side of the feed hopper 102. A cleaning component for cleaning the inner wall of the feed hopper 102 is provided on the top of the semi-circular disk 108. A sealing component for sealing the opening of the feed hopper 102 is provided on one side of the semi-circular disk 108.

[0030] The cleaning component includes mounting shells 300 disposed on both sides of the inner cavity of the feed hopper 102. The opposing sides of the two sets of mounting shells 300 are open. Mounting plates 304 are slidably connected to the inner cavities of both sets of mounting shells 300. Scrapers 301 are detachably connected to the opposing surfaces of the two sets of mounting plates 304 via detachable components. The two sets of scrapers 301 contact the corresponding inner walls of the feed hopper 102. Mounting cylinders 400 are fixedly connected to the middle of the opposing sides of the two sets of mounting shells 300. The openings of the two sets of mounting cylinders 400 are facing each other. Springs 406 are disposed within the inner cavities of the two sets of mounting cylinders 400. Sliding discs 401 are slidably connected to the bottom of each set of mounting cylinders 400. Push rods 402 are fixedly connected to the opposing ends of the two sets of sliding discs 401. The ends of the two sets of push rods 402 pass through the mounting cylinders 400 and mounting shells 300 sequentially to their respective sides and are fixedly connected to the corresponding sides of the mounting plates 304. In the middle, the openings of both sets of mounting cylinders 400 are equipped with anti-detachment components to seal the openings of the mounting cylinders 400 and prevent the springs 406 from coming out. The two ends of the two sets of springs 406 respectively contact the end surfaces of the corresponding side sealing components and the corresponding side sliding discs 401. The top of the feed hopper 102 is equipped with a drive component for driving the two sets of mounting shells 300 to drive the two sets of scrapers 301 to scrape the inner wall of the feed hopper 102. Through the setting of the cleaning component, the scrapers 301 can continuously scrape the inner wall of the feed hopper 102, remove the attached raw materials in time, avoid the accumulation of raw materials, and ensure that the feed hopper 102 is always unobstructed. At the same time, the cooperation of the springs 406, the sliding discs 401, and the push rods 402 allows the scrapers 301 to adaptively adjust their positions according to the actual situation of the inner wall of the feed hopper 102, always maintaining close contact with the inner wall, and effectively cleaning, ensuring the peeling effect of the raw materials attached to the inner wall of the feed hopper 102.

[0031] The extruder body 100 is a well-known technical means in the art. For its specific working principle and structure, please refer to the extruder body in a twin-screw granulation extruder with publication number CN221892340U. The rest will not be described in detail here.

[0032] The drive assembly includes a mounting bracket 201 fixedly mounted on the top of the semi-circular disk 108. A drive motor 200 is fixedly mounted on the top of the mounting bracket 201. The output shaft of the drive motor 200 is keyed to a drive rod 202. The end of the drive rod 202 passes downward through the mounting bracket 201 and extends into the inner cavity of the feed hopper 102. Connecting plates 203 are fixedly connected to the upper and lower parts of opposite sides of the mounting shell 300. The ends of the two sets of connecting plates 203 on the same side are respectively fixedly connected to the corresponding side surfaces of the drive rod 202. The middle part of the conveying pipe 101 is provided with... A connecting rod 204 is provided, and a spiral blade 205 is fixedly sleeved on the surface of the connecting rod 204. The top of the connecting rod 204 is fixedly connected to the bottom of the drive rod 202. Through the setting of the drive assembly, the drive motor 200 drives the drive rod 202 to rotate, which in turn drives the mounting shell 300 and the scraper 301 to scrape and clean the inner wall of the feed hopper 102. At the same time, the drive rod 202 also drives the connecting rod 204 and the spiral blade 205 to rotate in the conveying pipe 101, realizing the conveying and stirring of raw materials, making the raw materials more uniform during the conveying process and improving the production quality.

[0033] The sealing assembly includes a semi-circular groove 107 on one side of the semi-circular disk 108. Inside the semi-circular groove 107, a semi-circular cover 104 is rotatably fitted onto the surface of the drive rod 202. The top of the semi-circular disk 108 has a guide hole 103 for connecting to the semi-circular groove 107. The guide hole 103 is semi-circular. A threaded rod 105 is fixedly connected to the top of the semi-circular cover 104. The top of the threaded rod 105 passes upward through the guide hole 103, and a fixing nut 106 is threadedly connected to the end of the threaded rod 105. The bottom of the fixing nut 106 contacts the top surface of the semi-circular disk 108. Through the sealing assembly, the semi-circular cover 104 is rotatably fitted onto the surface of the drive rod 202 and can rotate along the guide hole 103. With the help of the threaded rod 105 and the fixing nut 106, the opening of the feed hopper 102 can be easily opened or closed, making the operation simple and flexible.

[0034] The anti-detachment component includes externally threaded tubes 405 threaded to the openings of two sets of mounting cylinders 400. Each set of externally threaded tubes 405 has a hexagonal tube 404 fixedly connected to its opposite side opening, facilitating rotation of the externally threaded tubes 405 by the operator. By rotating the hexagonal tube 404, the externally threaded tubes 405 can be easily screwed in or out, thereby opening or closing the openings of the mounting cylinders 400. This facilitates the inspection, repair, or replacement of the springs 406 inside the mounting cylinders 400, reducing equipment maintenance costs. The difficulty is increased. At the same time, the external threaded tube 405 is screwed into the installation cylinder 400, which further compresses the spring 406. Through the transmission of the sliding disc 401 and the push rod 402, the compression is transmitted to the scraper 301. The increased elasticity increases the contact pressure of the scraper 301 on the inner wall of the feed hopper 102, thereby improving the contact force of the scraper 301 on the inner wall. When scraping off the raw materials for weed control fabric attached to the inner wall of the feed hopper 102, the scraper 301 can scrape off the raw materials more forcefully, thus enhancing the cleaning effect.

[0035] The detachable component includes two sets of T-shaped strips 503 fixedly installed on opposite sides of two sets of scrapers 301. Each of the opposing surfaces of the two mounting plates 304 has slots 501 for inserting the two sets of T-shaped strips 503. The ends of the two sets of T-shaped strips 503 on the same side are fixedly connected to retaining rings 504. The tops of both mounting plates 304 have slots 505 for engaging the retaining rings 504. Each retaining ring 504 has a retaining bolt 502 inserted into its inner cavity. The end of each retaining bolt 502 penetrates downwards through the inner cavity of the corresponding retaining ring 504 and is threaded into the inner cavity of the corresponding slot 505. With this detachable component, disassembling and installing the scraper 301 only requires unscrewing the retaining bolts 502 and pulling or inserting the T-shaped strips 503 from the slots 501, which is convenient, quick, and reduces equipment maintenance time.

[0036] Among them, a set of semi-circular pull rings 500 are fixedly connected to the top of the two sets of T-shaped strips 503 on the same side.

[0037] Each of the two sets of sliding discs 401 is fixedly connected to a pull rod 403 on one side. The ends of the two sets of pull rods 403 pass through the inner cavities of the corresponding external threaded tube 405 and hexagonal tube 404 and extend to the outside of the mounting cylinder 400. By pulling the pull rods 403 outward, the spring 406 inside the mounting cylinder 400 is compressed, so that the mounting plate 304 sinks into the inner cavity of the mounting shell 300, preventing the mounting plate 304 from contacting the inner wall of the feed hopper 102, thereby facilitating the installation of the new scraper 301 by the operator.

[0038] Working principle:

[0039] Loosen the fixing nut 106, rotate the semi-circular cover 104 along the guide hole 103 to open the opening of the feed hopper 102, and feed the raw materials for weed control cloth production into the feed hopper 102.

[0040] Immediately, the drive motor 200 is started, and the output shaft of the drive motor 200 begins to rotate. Since the output shaft of the drive motor 200 is connected to the drive rod 202 via a key, the drive rod 202 rotates synchronously with the output shaft. At the same time, the end of the drive rod 202 extends downward through the mounting bracket 201 and into the inner cavity of the feed hopper 102. During its rotation, it drives the connecting plate 203 connected to it to rotate, and then the connecting plate 203 drives the mounting shell 300 to perform circular motion in the inner cavity of the feed hopper 102. Meanwhile, the spring 4... Under the action of the elastic force, the spring 406 will push the sliding disk 401 to slide towards the bottom of the mounting cylinder 400. At the same time, the push rod 402 will push the mounting plate 304 towards the inner wall of the feeding hopper 102, so that the scraper 301 on the surface of the mounting plate 304 will contact the inner wall of the feeding hopper 102. Then, driven by the drive motor 200, the scraper 301 will continuously scrape along the inner wall of the feeding hopper 102, scraping off the raw materials for weed control fabric attached to the inner wall, preventing the raw materials from accumulating on the inner wall of the feeding hopper 102.

[0041] Meanwhile, during the scraping of raw materials by the scraper 301, if the raw materials accumulate thickly on the inner wall of the feed hopper 102 and the resistance is high, the scraper 301 will be subjected to an inward reaction force. The reaction force will be transmitted to the push rod 402 through the mounting plate 304, and then to the sliding disc 401, causing the sliding disc 401 to slide into the mounting cylinder 400. The spring 406 will be further compressed, thereby causing the scraper 301 to temporarily leave the inner wall of the feed hopper 102 to avoid damage to the scraper 301 due to excessive force. When it passes the thicker area, the spring 406 will push the sliding disc 401 and the scraper 301 again, so that the scraper 301 will re-adhere to the inner wall of the feed hopper 102 and continue the cleaning work.

[0042] After the cleaning components have been running for a period of time, the scraper 301 may wear out. Operators can check the wear of the scraper 301 regularly.

[0043] If the scraper 301 needs to be replaced, first unscrew the fixing bolt 502 and remove the fixing bolt 502 from the fixing ring 504 and the slot 505; then pull the T-shaped strip 503 upward and pull it out of the slot 501 on the mounting plate 304 to complete the disassembly of the old scraper 301. Then, when installing the new scraper 301, first pull the pull rod 403 outward to compress the spring 406 in the mounting cylinder 400, so that the mounting plate 304 sinks into the inner cavity of the mounting shell 300. Insert the T-shaped strip 503 on the new scraper 301 into the slot 501, so that the fixing ring 504 is engaged in the slot 505. Then insert the fixing bolt 502 into the fixing ring 504 and tighten it so that its thread is connected to the inner cavity of the slot 505 to complete the installation of the new scraper 301.

[0044] Meanwhile, the external threaded tube 405 is further screwed into the mounting cylinder 400, thereby further compressing the spring 406. This compression is then transmitted to the scraper 301 via the sliding disc 401 and the push rod 402. The increased elasticity increases the contact pressure between the scraper 301 and the inner wall of the feed hopper 102, thus improving the contact force between the scraper 301 and the inner wall. As a result, the scraper 301 can more effectively scrape off the raw materials for weed control adhering to the inner wall of the feed hopper 102, enhancing the cleaning effect. This is especially effective for cleaning materials that are firmly attached. When it is necessary to reduce the contact force between the scraper 301 and the inner wall of the feed hopper 102, it is only necessary to rotate the external threaded tube 405 in the opposite direction.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A twin-screw extruder for producing weed control fabric, characterized in that, The extruder body (100) is connected to an input pipe (101) for conveying raw materials for weed control fabric production. The top of the conveying pipe (101) is connected to a feed hopper (102). A semi-circular disk (108) is fixedly connected to the top of one side of the feed hopper (102). A cleaning component for cleaning the inner wall of the feed hopper (102) is provided on the top of the semi-circular disk (108). A sealing component for sealing the opening of the feed hopper (102) is provided on one side of the semi-circular disk (108). The cleaning assembly includes mounting shells (300) disposed on both sides of the inner cavity of the feed hopper (102). The opposite sides of the two sets of mounting shells (300) are open. The inner cavities of the two sets of mounting shells (300) are slidably connected to mounting plates (304). The opposite surfaces of the two sets of mounting plates (304) are connected to scrapers (301) by detachable components. The two sets of scrapers (301) respectively contact the corresponding inner walls of the feed hopper (102). The middle of the opposite side of the two sets of mounting shells (300) is fixedly connected to mounting cylinders (400). The openings of the two sets of mounting cylinders (400) are opposite to each other. The inner cavities of the two sets of mounting cylinders (400) are respectively provided with springs (406). The bottoms of the two sets of mounting cylinders (400) are slidably connected to sliding... The two sets of sliding discs (401) are fixedly connected to push rods (402) at opposite ends. The ends of the two sets of push rods (402) pass through the mounting cylinder (400) and the mounting shell (300) in sequence and are fixedly connected to the middle of the corresponding side of the mounting plate (304). The openings of the two sets of mounting cylinders (400) are provided with anti-detachment components for sealing the openings of the mounting cylinders (400) to prevent the springs (406) from falling out. The two ends of the two sets of springs (406) respectively contact the sealing components on the corresponding side and the end surfaces of the sliding discs (401) on the corresponding side. The top of the feed hopper (102) is provided with a drive component for driving the two sets of mounting shells (300) to drive the two sets of scrapers (301) to scrape the inner wall of the feed hopper (102).

2. The twin-screw extruder for producing weed control fabric according to claim 1, characterized in that: The drive assembly includes a mounting bracket (201) fixedly mounted on the top of the semi-circular disk (108). A drive motor (200) is fixedly mounted on the top of the mounting bracket (201). The output shaft of the drive motor (200) is keyed to a drive rod (202). The end of the drive rod (202) extends downward through the mounting bracket (201) and into the inner cavity of the feed hopper (102). A connecting plate (203) is fixedly connected to the upper and lower parts of the opposite side of the mounting shell (300). The ends of the two sets of connecting plates (203) on the same side are respectively fixedly connected to the corresponding side surface of the drive rod (202). A connecting rod (204) is provided in the middle of the conveying pipe (101). A spiral blade (205) is fixedly sleeved on the surface of the connecting rod (204). The top of the connecting rod (204) is fixedly connected to the bottom of the drive rod (202).

3. The twin-screw extruder for producing weed control fabric according to claim 2, characterized in that: The enclosed assembly includes a semi-circular groove (107) on one side of the semi-circular disk (108). Inside the semi-circular groove (107), a semi-circular cover (104) is rotatably fitted on the surface of the drive rod (202). The top of the semi-circular disk (108) has a guide hole (103) for connecting the semi-circular groove (107). The guide hole (103) is semi-circular. A threaded rod (105) is fixedly connected to the top of the semi-circular cover (104). The top of the threaded rod (105) passes upward through the guide hole (103). The end of the threaded rod (105) is threadedly connected to a fixing nut (106). The bottom of the fixing nut (106) contacts the top surface of the semi-circular disk (108).

4. The twin-screw extruder for producing weed control fabric according to claim 3, characterized in that: The anti-detachment component includes an externally threaded tube (405) that is threaded to the opening of two sets of mounting cylinders (400), and a hexagonal tube (404) that is fixedly connected to the opening of the opposite side of the two sets of externally threaded tubes (405) to facilitate the operator to rotate the externally threaded tube (405).

5. A twin-screw extruder for producing weed control fabric according to claim 4, characterized in that: The detachable assembly includes two sets of T-shaped strips (503) fixedly installed on opposite sides of the two sets of scrapers (301). The opposing surfaces of the two sets of mounting plates (304) are provided with slots (501) for the two sets of T-shaped strips (503) to be inserted. The ends of the two sets of T-shaped strips (503) on the same side are respectively fixedly connected with fixing rings (504). The tops of the two sets of mounting plates (304) are provided with slots (505) for the fixing rings (504) to be engaged. The inner cavity of each set of fixing rings (504) is provided with fixing bolts (502). The end of each set of fixing bolts (502) passes downward through the inner cavity of the corresponding side fixing ring (504) and is threaded into the inner cavity of the corresponding side slot (505).

6. A twin-screw extruder for producing weed control fabric according to claim 5, characterized in that: Each of the two sets of sliding discs (401) is fixedly connected to a pull rod (403) on one side. The ends of the two sets of pull rods (403) pass through the inner cavity of the corresponding external threaded tube (405) and the hexagonal tube (404) and extend to the outside of the mounting cylinder (400).

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