Screw extrusion structure of granulator

Abstract

The utility model provides a screw extrusion structure of a pelletizer, belongs to the field of pelletizers, and aims to solve the problem that an extrusion head is inconvenient to dismount and mount conveniently. The screw extrusion structure comprises a square pipe, a support is fixedly connected to the square pipe, a conveying pipe is fixedly connected to the square pipe, and a rotating disc is fixedly connected to a two-way threaded rod. The device is provided with a bidirectional threaded rod; when the extrusion head is disassembled and replaced, the two-way threaded rod can be driven to rotate through the rotating disc, the two-way threaded rod can push the connecting plates on the two sides to move, the push blocks on the connecting plates can be separated from one side of the second positioning plate, and the second positioning plate and the extrusion head which are not hindered can be disassembled and replaced; the second positioning plate on the extrusion head is inserted into the connecting box, the bidirectional threaded rod is driven to rotate in the opposite direction, the bidirectional threaded rod pushes the connecting plates on the two sides and the push block to move inwards, the push block is attached to the second positioning plate, and when pressure is applied, the extrusion head can be fixed for connection and use.

Description

Technical Field

[0001] This utility model relates to the field of granulators, and more specifically, to a screw extrusion structure for a granulator. Background Technology

[0002] The core function of a granulator is to transform raw materials (such as plastics, powders, PVC, etc.) into uniform granular products through physical or chemical means, which facilitates subsequent storage, transportation or processing. The raw materials are extruded through a rotating screw into annular holes for processing, mainly covering industries such as pharmaceuticals, pesticides, food, and catalysts.

[0003] Currently, most pellet mill screw extrusion structures have the following problems:

[0004] For example, the twin-screw plastic granulator extruder with publication number 202220872884.X, although equipped with a filter screen to filter impurities in the material, can easily cause blockages due to impurities accumulating on the filter screen over time, affecting the filtration effect and making it inconvenient to clean and install the filter screen easily. Furthermore, existing equipment requires an extruder head to process the material into granules during granulation. To improve efficiency, the extruder head is often welded or fixed with multiple bolts. Over time, the extruder head is prone to damage, affecting the granulation effect. Moreover, the size of the extruder head's orifice is limited, resulting in a fixed granule size. If different granule sizes are required, extruder heads with different orifice sizes need to be replaced. Installing and disassembling the extruder head is cumbersome, requiring cutting the welded parts or removing multiple bolts, making disassembly difficult and hindering convenient installation and removal of the extruder head.

[0005] Therefore, we have made improvements to this by proposing a screw extrusion structure for a granulator. Utility Model Content

[0006] The purpose of this utility model is to address the current problems of inconvenient cleaning and installation of the filter screen, and inconvenient disassembly and installation of the extruder.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] The screw extrusion structure of the granulator is designed to improve the above-mentioned problems.

[0009] The application is as follows:

[0010] The device includes a square tube, a bracket fixedly connected to the square tube, a feed pipe fixedly connected to the square tube, a filter frame inside the feed pipe, a sealing gasket fixedly connected to the feed pipe, a connecting frame fixedly connected to the filter frame, a fixed box fixedly connected to the feed pipe, a spring fixedly connected to the fixed box, a limit plate fixedly connected to the other end of the spring, a stop block fixedly connected to the limit plate, an extrusion plate fixedly connected to the limit plate, a first positioning plate fixedly connected to the connecting frame, a motor fixedly connected to the square tube, a spiral push rod fixedly connected to the output shaft of the motor, the spiral push rod rotatably connected inside the square tube, an extrusion head provided on the square tube, a second positioning plate fixedly connected to the extrusion head, a connecting box fixedly connected to the square tube, a bidirectional threaded rod rotatably connected to the connecting box, and a turntable fixedly connected to the bidirectional threaded rod.

[0011] As a preferred technical solution of this application, the outer side of the filter frame is in contact with the inner side of the feed pipe, and the cross-section of the stop block is an isosceles triangle.

[0012] As a preferred technical solution of this application, the springs are symmetrically distributed on the upper and lower sides of the fixed box, and the springs correspond one-to-one with the stops through the limiting plates.

[0013] As a preferred technical solution of this application, the output shaft of the motor is fixedly connected to the center of one end of the spiral push rod, and the side end face of the spiral push rod is in contact with the inner side of the square tube.

[0014] As a preferred technical solution of this application, a connecting plate is threadedly connected to the bidirectional threaded rod, and a push block is fixedly connected to the connecting plate, with one side of the push block being inclined.

[0015] As a preferred technical solution of this application, the connecting plates are symmetrically distributed on the left and right sides of the bidirectional threaded rod, and the connecting plates correspond one-to-one with the push blocks.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the scheme of this application:

[0018] 1. A fixed box is provided. When disassembling and cleaning the filter frame, squeezing the squeezing plates on both sides of the fixed box drives one end of the limiting plate. The limiting plate can squeeze the spring, and the stop on the limiting plate can retract into the fixed box. The first positioning plate can detach from the fixed box without obstruction, allowing the connecting frame and filter frame to be disassembled for easy cleaning of filtered impurities. When installing and resetting the filter frame, insert the filter frame into the feed pipe. The inclined surface of the first positioning plate can push the inclined surface of the stop, retracting the stop into the fixed box. After resetting, the limiting plate and the stop are reset under the push of the spring. The plane of the stop can fit with the plane of the first positioning plate for fixed support. The filter frame after installation and resetting, together with the sealing gasket, can provide sealing protection to prevent leakage during filtration.

[0019] 2. Equipped with a bidirectional threaded rod; when disassembling and replacing the extruder head, the bidirectional threaded rod can be rotated by the turntable, which can push the connecting plates on both sides to move. The push block on the connecting plate can be detached from one side of the second positioning plate. The second positioning plate and the extruder head can be disassembled and replaced without obstruction. When fixing the extruder head, the second positioning plate on the extruder head is inserted into the connecting box, which drives the bidirectional threaded rod to rotate in the opposite direction. The bidirectional threaded rod pushes the connecting plates on both sides and the push block to move inward. The push block is attached to the second positioning plate. When pressure is applied, the extruder head can be fixed for connection and use. Attached Figure Description

[0020] Figure 1 A three-dimensional structural diagram of the screw extrusion structure of the granulator provided in this application;

[0021] Figure 2 A three-dimensional structural diagram of the second positioning plate of the screw extrusion structure of the granulator provided in this application;

[0022] Figure 3 A side view of the screw pusher structure of the granulator screw extrusion structure provided in this application;

[0023] Figure 4 A top view schematic diagram of the connecting frame of the screw extrusion structure of the granulator provided in this application;

[0024] Figure 5 A side view of the first positioning plate of the screw extrusion structure of the granulator provided in this application;

[0025] Figure 6 A side view of the square tube structure of the screw extrusion structure of the granulator provided in this application;

[0026] Figure 7 This is a side view of the bidirectional threaded rod structure of the screw extrusion structure of the granulator provided in this application.

[0027] The diagram shows: 1. Square tube; 2. Support; 3. Feed pipe; 4. Filter frame; 5. Sealing gasket; 6. Connecting frame; 7. Fixing box; 8. Spring; 9. Limiting plate; 10. Stop block; 11. Extrusion plate; 12. First positioning plate; 13. Motor; 14. Spiral push rod; 15. Extrusion head; 16. Second positioning plate; 17. Connecting box; 18. Bidirectional threaded rod; 19. Turntable; 20. Connecting plate; 21. Push block. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0029] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0030] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Example 1:

[0034] like Figure 1-7As shown, this embodiment proposes a screw extrusion structure for a granulator, including a square tube 1, a support 2 fixedly connected to the square tube 1, a feed pipe 3 fixedly connected to the square tube 1, a filter frame 4 disposed inside the feed pipe 3, a sealing gasket 5 fixedly connected to the feed pipe 3, a connecting frame 6 fixedly connected to the filter frame 4, a fixing box 7 fixedly connected to the feed pipe 3, a spring 8 fixedly connected inside the fixing box 7, a limit plate 9 fixedly connected to the other end of the spring 8, and a stop block 10 fixedly connected to the limit plate 9. An extrusion plate 11 is fixedly connected to the upper part of the square tube 1. A first positioning plate 12 is fixedly connected to the connecting frame 6. A motor 13 is fixedly connected to the square tube 1. A spiral push rod 14 is fixedly connected to the output shaft of the motor 13. The spiral push rod 14 is rotatably connected inside the square tube 1. An extrusion head 15 is provided on the square tube 1. A second positioning plate 16 is fixedly connected to the extrusion head 15. A connecting box 17 is fixedly connected to the square tube 1. A bidirectional threaded rod 18 is rotatably connected to the connecting box 17. A turntable 19 is fixedly connected to the bidirectional threaded rod 18.

[0035] Example 2:

[0036] The solution in Example 1 will be further described below with reference to its specific working method.

[0037] like Figure 5 As shown, in a preferred embodiment, based on the above method, the outer side of the filter frame 4 is in contact with the inner side of the feed pipe 3, and the cross-section of the stop block 10 is an isosceles triangle, which can ensure that the inclined surface of the stop block 10 can be pushed by the first positioning plate 12. The plane of the stop block 10 is in contact with the plane of the first positioning plate 12, which can play a role in locking and limiting.

[0038] like Figure 5 As shown, in a preferred embodiment, based on the above method, the springs 8 are symmetrically distributed on the upper and lower sides of the fixed box 7. The springs 8 correspond one-to-one with the stops 10 through the limiting plate 9, which can ensure that the stops 10 on both sides can engage with the first positioning plate 12 for limiting.

[0039] like Figure 6 As shown, in a preferred embodiment, based on the above method, the output shaft of the motor 13 is further fixedly connected to the center of one end of the spiral push rod 14, and the side end face of the spiral push rod 14 is in contact with the inner side of the square tube 1, which can ensure that the spiral push rod 14 can smoothly push the material in the square tube 1 when it rotates.

[0040] like Figure 7 As shown, in a preferred embodiment, based on the above method, a connecting plate 20 is further threaded onto the bidirectional threaded rod 18, and a push block 21 is fixedly connected to the connecting plate 20. One side of the push block 21 is inclined, which can ensure that the push block 21 can apply pressure to the second positioning plate 16 to fix the extruder head 15.

[0041] like Figure 7 As shown, in a preferred embodiment, based on the above method, the connecting plates 20 are symmetrically distributed on the left and right sides of the bidirectional threaded rod 18, and the connecting plates 20 correspond one-to-one with the push blocks 21, which can ensure that the push blocks 21 on both sides can fix and limit the second positioning plate 16.

[0042] Specifically, the screw extrusion structure of this granulator, when in use: combined with Figure 1-7 During granulation, materials are conveyed through the feed pipe 3 and filtered through the filter frame 4. The filtered material falls into the square tube 1. The motor 13 is turned on to drive the spiral pusher 14 to rotate. The spiral pusher 14 can push the material to move inside the square tube 1. When the material moves to the extrusion head 15, it continues to be pressurized and can be used to manufacture granules. When the filter frame 4 is disassembled and cleaned, the extrusion plates 11 on both sides of the compression fixing box 7 drive one end of the limiting plate 9. The limiting plate 9 can compress the spring 8, and the stop block 10 on the limiting plate 9 can retract into the fixing box 7 without obstruction. The first positioning plate 12 can be detached from the fixed box 7 to disassemble the connecting frame 6 and the filter frame 4, facilitating the cleaning of filtered impurities. When installing and resetting the filter frame 4, the filter frame 4 is inserted into the feed pipe 3. The inclined surface of the first positioning plate 12 can push the inclined surface of the stop block 10, retracting the stop block 10 into the fixed box 7. After resetting, the limit plate 9 and the stop block 10 are reset under the push of the spring 8. The plane of the stop block 10 can fit with the plane of the first positioning plate 12 for fixed support. After installation and resetting, the filter frame 4, together with the sealing gasket 5, can provide sealing protection to prevent leakage during filtration.

[0043] The bracket 2 on the square tube 1 can support the equipment for use. When disassembling and replacing the extruder head 15, the double-threaded rod 18 can be rotated by the turntable 19. The double-threaded rod 18 can push the connecting plates 20 on both sides to move. The push block 21 on the connecting plate 20 can be separated from one side of the second positioning plate 16. The second positioning plate 16 and the extruder head 15 can be disassembled and replaced without obstruction. When fixing the extruder head 15, the second positioning plate 16 on the extruder head 15 is inserted into the connecting box 17, which drives the double-threaded rod 18 to rotate in the opposite direction. The double-threaded rod 18 pushes the connecting plates 20 on both sides and the push block 21 to move inward. The push block 21 is attached to the second positioning plate 16. When pressure is applied, the extruder head 15 can be fixed for connection and use.

[0044] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, as well as all technical solutions and improvements that do not depart from the spirit and scope of practicality, are covered within the scope of the claims of the present utility model.

Claims

1. A screw extrusion structure for a granulator, comprising a square tube (1), characterized in that, A bracket (2) is fixedly connected to the square tube (1), a conveying pipe (3) is fixedly connected to the square tube (1), a filter frame (4) is provided inside the conveying pipe (3), a sealing gasket (5) is fixedly connected to the conveying pipe (3), a connecting frame (6) is fixedly connected to the filter frame (4), a fixed box (7) is fixedly connected to the conveying pipe (3), a spring (8) is fixedly connected inside the fixed box (7), a limit plate (9) is fixedly connected to the other end of the spring (8), a stop block (10) is fixedly connected to the limit plate (9), and an extrusion plate (11) is fixedly connected to the limit plate (9). A first positioning plate (12) is fixedly connected to the connecting frame (6), a motor (13) is fixedly connected to the square tube (1), a spiral push rod (14) is fixedly connected to the output shaft of the motor (13), the spiral push rod (14) is rotatably connected inside the square tube (1), an extrusion head (15) is provided on the square tube (1), a second positioning plate (16) is fixedly connected to the extrusion head (15), a connecting box (17) is fixedly connected to the square tube (1), a bidirectional threaded rod (18) is rotatably connected to the connecting box (17), and a turntable (19) is fixedly connected to the bidirectional threaded rod (18).

2. The screw extrusion structure of a granulator according to claim 1, characterized in that, The outer side of the filter frame (4) is in contact with the inner side of the feed pipe (3), and the cross-section of the stop block (10) is an isosceles triangle.

3. The screw extrusion structure of a granulator according to claim 1, characterized in that, The springs (8) are symmetrically distributed on the upper and lower sides of the fixed box (7), and the springs (8) correspond one-to-one with the stops (10) through the limiting plate (9).

4. The screw extrusion structure of a granulator according to claim 1, characterized in that, The output shaft of the motor (13) is fixedly connected to the center of one end of the spiral push rod (14), and the side end face of the spiral push rod (14) is in contact with the inner side of the square tube (1).

5. The screw extrusion structure of a granulator according to claim 1, characterized in that, A connecting plate (20) is threaded onto the bidirectional threaded rod (18), and a push block (21) is fixedly connected to the connecting plate (20). One side of the push block (21) is inclined.

6. The screw extrusion structure of a granulator according to claim 5, characterized in that, The connecting plates (20) are symmetrically distributed on the left and right sides of the bidirectional threaded rod (18), and the connecting plates (20) correspond one-to-one with the push blocks (21).

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