Agricultural film production extruder head structure with rapid screen changing function

Abstract

The utility model relates to the technical field of accessories of agricultural film production extruders, in particular to a machine head structure of an agricultural film production extruder with a quick screen changing function, which comprises a machine head main body and an extrusion pipe arranged at a discharge end of the machine head main body, and a left semicircular hole and a right semicircular hole which are mutually symmetrical are arranged on a pipe body of the extrusion pipe. A sealing plate is clamped and matched with the semicircular hole part, a filter screen cylinder is fixedly mounted on the inner side surface of the sealing plate, is positioned in the extrusion pipe and is matched with the extrusion pipe in an inserting manner, a filter screen is arranged in the filter screen cylinder, the top of the sealing plate is sleeved with an upper pressing ring, a lower pressing ring is arranged below the upper pressing ring, and the extrusion pipe is sleeved with the lower pressing ring; side edge plates are fixedly installed at the two ends of the upper pressing ring, end plates are fixedly installed at the two ends of the lower pressing ring, and the side edge plates and the corresponding end plates are fixed through a left fastening screw and a right fastening screw. According to the utility model, the screen can be conveniently and quickly replaced, and the operation is simple.

Description

Technical Field

[0001] This utility model relates to the technical field of extruder accessories for agricultural film production, specifically to the extruder head structure for agricultural film production with a quick screen changing function. Background Technology

[0002] In the production process of agricultural film, the extruder is one of the key pieces of equipment. It extrudes raw materials into the corresponding die head for subsequent preparation operations. The die head structure of the extruder plays a vital role in the quality of the film and the production efficiency.

[0003] During the production process, the raw materials may contain impurities. These impurities can affect the film forming process after being extruded along with the raw materials. In order to reduce the interference of impurities, a corresponding filter screen is usually installed in the die head to filter out the impurities.

[0004] However, when using a filter screen for impurity filtration, the screen needs to be replaced regularly to ensure the quality of the extruded film. Traditional extruder heads require complete disassembly of the discharge end when changing the screen, involving numerous components and requiring extended downtime. Furthermore, the limited space at the discharge end makes it difficult to use external tools after disassembly, resulting in cumbersome, time-consuming, and labor-intensive operations. This not only reduces production efficiency but also increases production costs and inconveniences users. Therefore, we propose an extruder head structure for agricultural film production with a quick screen changing function. Utility Model Content

[0005] The purpose of this invention is to provide a die head structure for an agricultural film production extruder with a quick screen changing function, so as to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The extruder head structure for agricultural film production with quick screen changing function includes a head body and an extrusion tube located at the discharge end of the head body. The extrusion tube has two symmetrical semi-circular holes on its body. A sealing plate is engaged with each semi-circular hole. A filter screen cylinder is fixedly installed on the inner side of the sealing plate. The filter screen cylinder is located inside the extrusion tube and is inserted into it. A filter screen is installed inside the filter screen cylinder. An upper clamping ring is fitted on the top of the sealing plate, and a lower clamping ring is located below the upper clamping ring. The lower clamping ring is fitted onto the extrusion tube. Side plates are fixedly installed at both ends of the upper clamping ring, and end plates are fixedly installed at both ends of the lower clamping ring. The side plates and corresponding end plates are fixed together by two fastening screws.

[0008] Preferably, a valve is fixedly installed on the end of the extrusion tube near the main body of the die head, and the size of the sealing plate is adapted to the size of the semi-circular hole.

[0009] Preferably, the cross-section of the semi-circular hole is semi-annular, and the size of the filter screen cylinder is adapted to the size of the extrusion tube.

[0010] Preferably, the filter screen cylinder is provided with through holes at both ends that are connected to the outside, and the filter screen is fixedly installed on the wall of the through hole on the side away from the valve.

[0011] Preferably, the depth of the through hole is 3cm to 5cm, and the filter screen has a microporous plate structure.

[0012] Preferably, a sealing gasket is fitted over the outside of the sealing plate, and the upper clamping ring presses the sealing gasket onto the sealing plate and the extrusion tube.

[0013] Preferably, an anti-slip layer is provided on the outer surface of the sealing gasket, and the thickness of the sealing gasket is 0.2cm to 0.35cm.

[0014] Preferably, the side plate is provided with two symmetrical screw holes, and the end plate is fixedly installed with two symmetrical threaded sleeves. The fastening screw passes through the screw holes and is threadedly connected to the threaded sleeves.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model uses symmetrical semi-circular holes on the extrusion tube body to conveniently insert a sealing plate with a filter screen cylinder. The semi-annular cross-section of the semi-circular holes matches the sealing plate, making the installation stable. The size of the filter screen cylinder matches the extrusion tube, and the filter screen with a microporous plate structure inside can effectively filter impurities in the raw materials. The entire replacement process can be carried out directly from the top of the extrusion tube. The number of disassembled parts is small, achieving the effect of easy and quick disassembly and replacement of the filter screen.

[0017] 2. This utility model uses a sealing gasket fitted outside the sealing plate, which is pressed against the sealing plate and the extrusion tube by the upper and lower clamping rings. The anti-slip layer on the outer surface of the sealing gasket can enhance the anti-slip effect, and the sealing gasket of appropriate thickness can further ensure the sealing performance and prevent material leakage.

[0018] 3. This utility model is fixed by fastening screws on the side plate and the end plate, which makes it easy to install and disassemble. The valve near the end of the extrusion tube can control the material flow when changing the screen, which is convenient to use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is one of the partial structural schematic diagrams of this utility model;

[0021] Figure 3 This is the second partial structural schematic diagram of the present utility model;

[0022] Figure 4 This is the third partial structural schematic diagram of this utility model;

[0023] Figure 5 This is the fourth partial structural schematic diagram of the present utility model;

[0024] The meanings of the labels in the diagram are as follows:

[0025] 1. Die head body; 10. Extrusion tube; 11. Valve; 12. Semicircular orifice;

[0026] 2. Filter cylinder; 20. Through hole; 21. Filter screen; 22. Sealing plate;

[0027] 3. Upper clamping ring; 30. Side plate; 31. Screw hole; 32. Sealing gasket; 321. Anti-slip layer; 33. Lower clamping ring; 34. End plate; 35. Threaded sleeve; 36. Fastening screw. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 1-5 This utility model provides a technical solution: a die head structure for an agricultural film production extruder with a quick screen changing function, including a die head body 1 and an extrusion tube 10 disposed at the discharge end of the die head body 1. The tube body of the extrusion tube 10 is provided with two symmetrical semi-circular holes 12 on the left and right sides. A sealing plate 22 is snapped into the semi-circular hole 12. The size of the sealing plate 22 is adapted to the size of the semi-circular hole 12 and is used to seal the semi-circular hole 12. A filter screen cylinder 2 is fixedly installed on the inner side of the sealing plate 22. The filter screen cylinder 2 is located inside the extrusion tube 10 and is inserted into the extrusion tube 10. The cross-section of the semi-circular hole 12 is semi-annular. The size of the filter screen cylinder 2 is adapted to the size of the extrusion tube 10 and is used to stably assemble the filter screen cylinder 2 into the extrusion tube 10. The adapted size makes the installation tight and avoids material leakage.

[0030] Specifically, a filter screen 21 is installed inside the filter cylinder 2, which filters the material during the material extrusion process, ensuring the quality of the extruded film. An upper clamping ring 3 is fitted on the top of the sealing plate 22, and a lower clamping ring 33 is installed below the upper clamping ring 3. The lower clamping ring 33 is fitted on the extrusion tube 10. Side plates 30 are fixedly installed at both ends of the upper clamping ring 3, and end plates 34 are fixedly installed at both ends of the lower clamping ring 33. The side plates 30 and the corresponding end plates 34 are fixed by two fastening screws 36 on the left and right sides, so that the upper clamping ring 3 and the lower clamping ring 33 can be easily installed and removed by tightening and loosening the fastening screws 36, thereby facilitating the replacement of the sealing plate 22 and the filter cylinder 2, achieving the effect of easy and quick replacement.

[0031] In this embodiment, a valve 11 is fixedly installed on the end of the extrusion tube 10 near the head body 1, so that when the filter screen 21 is replaced, the material flow can be effectively controlled by closing the valve 11, reducing the possibility of material leakage and facilitating the screen replacement operation.

[0032] Specifically, the filter cylinder 2 is provided with through holes 20 at both ends, which are connected to the outside. The filter screen 21 is fixedly installed on the wall of the through hole 20 on the side away from the valve 11. The depth of the through hole 20 is 3cm to 5cm. The filter screen 21 has a microporous plate structure, which facilitates the passage of materials and provides reasonable installation space for the filter screen 21. The microporous plate structure of the filter screen 21 can effectively filter impurities in the raw materials and improve the quality of the membrane.

[0033] Furthermore, a sealing gasket 32 ​​is fitted on the outside of the sealing plate 22, and the upper clamping ring 3 presses the sealing gasket 32 ​​tightly onto the sealing plate 22 and the extrusion tube 10. The thickness of the sealing gasket 32 ​​is 0.2cm to 0.35cm, which can effectively prevent material leakage from the connection between the sealing plate 22 and the extrusion tube 10 during the material extrusion process, and ensure the sealing of the production process.

[0034] In addition, an anti-slip layer 321 is provided on the outer surface of the sealing gasket 32. The anti-slip layer 321 increases the friction when the sealing gasket 32 ​​is pressed, further improving the sealing effect, preventing the sealing gasket 32 ​​from shifting under pressure, and ensuring the stability of the seal.

[0035] It is worth noting that the side plate 30 is provided with two symmetrical screw holes 31 on the left and right, and the end plate 34 is fixedly installed with two symmetrical threaded sleeves 35 on the left and right. The fastening screw 36 passes through the screw hole 31 and is threadedly connected to the threaded sleeve 35, which makes the installation and removal of the fastening screw 36 more convenient and stable, improves the reliability of the entire clamping structure, and facilitates the smooth operation of quick screen replacement.

[0036] When using the extruder head structure of the agricultural film production extruder with quick screen changing function of this utility model, first check whether the valve 11 on the extrusion tube 10 is working properly.

[0037] Before production, the sealing plate 22 is snapped into the semi-circular hole 12 of the extrusion tube 10, so that the filter screen 2 is inserted into the extrusion tube 10. Then, the sealing gasket 32 ​​is put on the outside of the sealing plate 22, and the upper clamping ring 3 and the lower clamping ring 33 are installed. The fastening screw 36 is tightened through the screw hole 31 of the side plate 30 and the threaded sleeve 35 on the end plate 34 to complete the installation. At this time, the upper clamping ring 3 and the lower clamping ring 33 press the sealing gasket 32 ​​and the sealing plate 22 together to ensure the sealing performance.

[0038] When it is necessary to replace the screen, first close valve 11 to control the material flow, then loosen the fastening screw 36, remove the upper clamping ring 3 and the lower clamping ring 33, remove the sealing plate 22 from the semi-circular hole 12, replace the filter screen cylinder 2 with the sealing plate 22 assembly with the new filter screen 21, reinstall the upper clamping ring 3 and the lower clamping ring 33, tighten the fastening screw 36, open valve 11, and the production of agricultural film can continue. The whole process is convenient to operate, which can effectively reduce downtime and improve production efficiency.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A die head structure for an agricultural film production extruder with a quick screen changing function, comprising a die head body (1) and an extrusion tube (10) disposed at the discharge end of the die head body (1), characterized in that: The extrusion tube (10) has two symmetrical semicircular holes (12) on its body. A sealing plate (22) is fitted into each semicircular hole (12). A filter screen cylinder (2) is fixedly installed on the inner side of the sealing plate (22). The filter screen cylinder (2) is located inside the extrusion tube (10) and is inserted into it. A filter screen (21) is installed inside the filter screen cylinder (2). The sealing plate (22) has... An upper clamping ring (3) is fitted on the top, and a lower clamping ring (33) is provided below the upper clamping ring (3). The lower clamping ring (33) is fitted on the extrusion tube (10). Side plates (30) are fixedly installed at both ends of the upper clamping ring (3), and end plates (34) are fixedly installed at both ends of the lower clamping ring (33). The side plates (30) and the corresponding end plates (34) are fixed together by two fastening screws (36) on the left and right.

2. The extruder head structure for agricultural film production with rapid screen changing function according to claim 1, characterized in that: A valve (11) is fixedly installed on the end of the extrusion tube (10) near the head body (1), and the size of the sealing plate (22) is adapted to the size of the semi-circular hole (12).

3. The extruder head structure for agricultural film production with rapid screen changing function according to claim 2, characterized in that: The cross-section of the semi-circular hole (12) is semi-annular, and the size of the filter cylinder (2) is adapted to the size of the extrusion tube (10).

4. The extruder head structure for agricultural film production with rapid screen changing function according to claim 3, characterized in that: The filter cylinder (2) is provided with through holes (20) at both ends that are connected to the outside. The filter screen (21) is fixedly installed on the wall of the through hole (20) on the side away from the valve (11).

5. The extruder head structure for agricultural film production with rapid screen changing function according to claim 4, characterized in that: The depth of the through hole (20) is 3cm to 5cm, and the filter screen (21) has a microporous plate structure.

6. The extruder head structure for agricultural film production with rapid screen changing function according to claim 1, characterized in that: A sealing gasket (32) is fitted on the outside of the sealing plate (22), and the upper clamping ring (3) presses the sealing gasket (32) onto the sealing plate (22) and the extrusion tube (10).

7. The extruder head structure for agricultural film production with rapid screen changing function according to claim 6, characterized in that: An anti-slip layer (321) is provided on the outer surface of the sealing gasket (32), and the thickness of the sealing gasket (32) is 0.2cm to 0.35cm.

8. The extruder head structure for agricultural film production with rapid screen changing function according to claim 1, characterized in that: The side plate (30) is provided with two symmetrical screw holes (31) on the left and right sides. The end plate (34) is fixedly installed with two symmetrical threaded sleeves (35) on the left and right sides. The fastening screw (36) passes through the screw hole (31) and is threadedly connected to the threaded sleeve (35).

Images