Cleaning device for double-screw extruder

Abstract

The utility model discloses a cleaning device for a double-screw extruder, which belongs to the technical field of extruder cleaning and comprises a support frame, a second transverse plate is arranged at the top end of the inner side of the support frame, a groove is formed in the bottom of the second transverse plate, a driving screw is arranged in the groove, a driving motor is assembled at one end of the driving screw, and the other end of the driving screw is provided with a rotating shaft. Two second threaded blocks are arranged on the periphery of the driving screw rod, the bottoms of the two second threaded blocks are fixedly connected to the two sides of the top of a mounting frame correspondingly, shaft sleeves are fixedly connected to the two sides of the bottom of the mounting frame through connecting rods, a cleaning cylinder is movably arranged between the two shaft sleeves, and a cleaning brush is arranged in the cleaning cylinder; a fixed clamping cylinder is matched with a movable clamping cylinder to clamp and fix a threaded shaft, a cleaning cylinder located on the same horizontal line with the fixed clamping cylinder and the movable clamping cylinder and a cleaning brush in the cleaning cylinder are matched, under driving of a driving motor, a driving screw and a second threaded block are matched, a mounting frame and a connecting rod are driven to move, and therefore transverse movement of the cleaning brush is driven; and the purpose of cleaning the threaded shaft is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of extruder cleaning technology, specifically relating to a cleaning device for a twin-screw extruder. Background Technology

[0002] Twin-screw extruders were developed based on single-screw extruders. Due to their excellent feeding performance, mixing and plasticizing performance, venting performance, and extrusion stability, they are now widely used in the molding and processing of extruded products. Twin-screw extruders consist of several parts, including a transmission device, a feeding device, a barrel, and a screw. The functions of each component are similar to those of single-screw extruders. The screw needs to be cleaned after subsequent use.

[0003] According to patent number CN202120916408.9, a cleaning device for a twin-screw extruder includes a support plate, a connecting plate, and a base. The support plate is mounted on the base. A lifting mechanism is disposed between the support plate and the connecting plate. A screw is mounted on the connecting plate. The lifting mechanism includes a forward and reverse rotating motor. A threaded shaft is fixedly connected to one side of the forward and reverse rotating motor. The left and right sections of the threaded shaft have threaded structures with different rotation directions. An upper arm and a lower arm are movably connected to the threaded structures on both the left and right sections. The upper arm is connected to the support plate, and the lower arm is connected to the connecting plate. A cleaning mechanism is mounted on the base. The cleaning mechanism includes a cleaning tank, a mounting plate, a first cleaning brush, and a second cleaning brush. The mounting plate is fixed to the bottom of the cleaning tank. The first cleaning brush is fixedly connected to the inner walls of both sides of the cleaning tank, and the second cleaning brush is fixedly connected to both sides of the mounting plate. The screw extends into the cleaning tank, and the first and second cleaning brushes on adjacent sides clean the screw.

[0004] The above technical solution has certain technical defects in actual use. Since the two ends of the threaded shaft are installed through connecting rods, and the top of the connecting rods is fixedly connected to the support plate, when the threaded shaft rotates and drives the movable block to move, the upper arm is restricted due to its connection with the top wall of the support plate and cannot move with the movable block. As a result, the movable block cannot drive the top of the lower arm to move, so the lower arm cannot push the connecting plate to move the screw downward into the cleaning barrel, making it difficult to clean the screw. Therefore, we propose a twin-screw extruder cleaning device. Utility Model Content

[0005] The purpose of this invention is to provide a cleaning device for a twin-screw extruder to solve the existing problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cleaning device for a twin-screw extruder, comprising a support frame, a coaxial gear, and a gear groove. A second horizontal plate is fixedly welded to the top inner side of the support frame, and a groove is formed at the bottom of the second horizontal plate. A drive screw is disposed inside the groove, and a drive motor is mounted at one end of the drive screw. Two second threaded blocks are spirally connected to the outer circumference of the drive screw. The bottoms of the two second threaded blocks are fixedly connected to the top two sides of a mounting frame, respectively. Bushings are fixedly connected to the bottom two sides of the mounting frame via connecting rods. A cleaning cylinder is movably disposed between the two bushings, and a cleaning brush is disposed inside the cleaning cylinder.

[0007] Preferably, a gear groove is provided on the outer side of the bottom surface of the groove, a coaxial gear meshing with the gear groove is provided on the inner side of the mounting frame, a worm is also provided inside the mounting frame, the worm is coaxially connected with the coaxial gear, a turbine is meshed with the bottom of the worm, a transmission gear is provided at the bottom of the turbine, and a gear sleeve meshing with the transmission gear is provided on the outer periphery of the cleaning cylinder.

[0008] Preferably, a fixed clamping cylinder is fixedly installed at the middle of one side of the inner wall of the support frame, and a first horizontal plate is also provided at the middle of one side of the inner wall of the support frame. A clamping screw is provided inside one side of the first horizontal plate, and a first threaded block is spirally connected to the outer periphery of the clamping screw. A movable clamping cylinder corresponding to the fixed clamping cylinder is welded to the side of the first threaded block that extends to the outside.

[0009] Preferably, one end of the clamping screw is equipped with a clamping motor, which is fixedly embedded in the inner wall of one end of the first horizontal plate.

[0010] Preferably, the cleaning cylinder is disposed between the fixed clamp and the movable clamp, and the cleaning cylinder, the fixed clamp, and the movable clamp are located on the same horizontal line.

[0011] Preferably, a control panel is fixedly installed on the outer side of the support frame, and the control panel is fixedly installed on the outer side of the support frame by means of embedding.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By using a fixed clamp and a movable clamp to clamp and fix the threaded shaft, and with the cleaning cylinder and its internal cleaning brush on the same horizontal line as the two, the drive motor, along with the drive screw and the second threaded block, drives the mounting bracket and connecting rod to move, thereby achieving the purpose of driving the cleaning brush to move laterally and cleaning the threaded shaft.

[0014] 2. By utilizing the meshing connection of coaxial gears and gear slots, along with worm gears, turbines, transmission gears, and gear sleeves, the cleaning cylinder can rotate while moving. The rotating cleaning cylinder drives the cleaning brush to clean the threaded shaft, thereby improving cleaning efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a multi-angle structural schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the mounting bracket structure of this utility model.

[0018] In the diagram: 1. Support frame; 2. Control panel; 3. Fixed clamp; 4. First horizontal plate; 5. Clamping motor; 6. Clamping screw; 7. First threaded block; 8. Moving clamp; 9. Second horizontal plate; 10. Drive motor; 11. Drive screw; 12. Second threaded block; 13. Mounting bracket; 14. Worm gear; 15. Coaxial gear; 16. Gear groove; 17. Turbine; 18. Transmission gear; 19. Connecting rod; 20. Bushing; 21. Cleaning cylinder; 22. Cleaning brush; 23. Gear sleeve. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-3 This utility model provides a technical solution for a cleaning device for a twin-screw extruder: it includes a support frame 1, a coaxial gear 15 and a gear groove 16. A second horizontal plate 9 is fixedly welded to the top inner side of the support frame 1. A groove is opened at the bottom of the second horizontal plate 9. A drive screw 11 is arranged inside the groove. A drive motor 10 is assembled at one end of the drive screw 11. Two second threaded blocks 12 are spirally connected to the outer circumference of the drive screw 11. The bottom of the two second threaded blocks 12 is fixedly connected to the top two sides of the mounting frame 13 respectively. Bushings 20 are fixedly connected to the bottom two sides of the mounting frame 13 through connecting rods 19. A cleaning cylinder 21 is movably arranged between the two bushings 20. A cleaning brush 22 is provided inside the cleaning cylinder 21.

[0021] Specifically, a gear groove 16 is provided on the outer side of the bottom surface of the groove, a coaxial gear 15 that meshes with the gear groove 16 is provided on the inner side of the mounting bracket 13, a worm 14 is also provided inside the mounting bracket 13, the worm 14 is coaxially connected with the coaxial gear 15, a turbine 17 is meshed at the bottom of the worm 14, a transmission gear 18 is provided at the bottom of the turbine 17, and a gear sleeve 23 that meshes with the transmission gear 18 is fitted on the outer periphery of the cleaning cylinder 21.

[0022] Specifically, a fixed clamping cylinder 3 is fixedly installed at the middle of one side of the inner wall of the support frame 1. A first horizontal plate 4 is also provided at the middle of one side of the inner wall of the support frame 1. A clamping screw 6 is provided inside one side of the first horizontal plate 4. A first threaded block 7 is spirally connected to the outer periphery of the clamping screw 6. A movable clamping cylinder 8 corresponding to the fixed clamping cylinder 3 is welded to the side of the first threaded block 7 extending to the outside.

[0023] Specifically, a clamping motor 5 is mounted on one end of the clamping screw 6, and the clamping motor 5 is fixedly embedded in the inner wall of one end of the first horizontal plate 4.

[0024] Specifically, the cleaning cylinder 21 is positioned between the fixed clamp 3 and the movable clamp 8, and the cleaning cylinder 21, the fixed clamp 3, and the movable clamp 8 are located on the same horizontal line.

[0025] Specifically, a control panel 2 is fixedly installed on the outer side of the support frame 1. The control panel 2 is fixedly installed on the outer side of the support frame 1 by means of inlay.

[0026] In this embodiment, during use, one end of the disassembled threaded shaft is passed through the cleaning cylinder 21 and inserted into the inside of the fixing clamp 3. Then, the clamping motor 5 drives the clamping screw 6 to rotate, causing the first threaded block 7 to move along the trajectory of the clamping screw 6. This causes the first threaded block 7 to move the moving clamp 8 to clamp the other end of the threaded shaft, keeping it fixed. Then, the drive motor 10 drives the drive screw 11 to rotate, cooperating with the movement of the second threaded block 12, which causes the mounting bracket 13 and the connecting rod 19 to move laterally. The cleaning cylinder 21 between the two bushings 20 at the bottom of the connecting rod 19 and the cleaning brush 22 inside it clean the threaded shaft. During cleaning, the coaxial gear 15 is rotated by the meshing connection between the gear groove 16 and the coaxial gear 15 when the mounting bracket 13 moves. The coaxial gear 15 drives the worm gear 14 to rotate synchronously, thereby driving the turbine 17 to rotate. The meshing connection between the turbine 17 and the transmission gear 18, and the meshing connection between the transmission gear 18 and the gear sleeve 23, drives the gear sleeve 23, causing the gear sleeve 23 to drive the cleaning cylinder 21 to rotate. Thus, the cleaning brush 22 rotates while moving and cleaning the threaded shaft, thereby improving the cleaning efficiency of the threaded shaft.

[0027] 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 cleaning device for a twin-screw extruder, comprising a support frame (1), a coaxial gear (15), and a gear groove (16), characterized in that: The support frame (1) has a second horizontal plate (9) fixedly welded to its inner top. The bottom of the second horizontal plate (9) has a groove. A drive screw (11) is provided inside the groove. A drive motor (10) is assembled at one end of the drive screw (11). Two second threaded blocks (12) are spirally connected to the outer circumference of the drive screw (11). The bottoms of the two second threaded blocks (12) are fixedly connected to the top two sides of the mounting frame (13). The bottom two sides of the mounting frame (13) are fixedly connected to bushings (20) through connecting rods (19). A cleaning cylinder (21) is movably arranged between the two bushings (20). A cleaning brush (22) is provided inside the cleaning cylinder (21).

2. The cleaning device for a twin-screw extruder according to claim 1, characterized in that: A gear groove (16) is provided on the outer side of the bottom surface of the groove. A coaxial gear (15) that meshes with the gear groove (16) is provided on the inner side of the mounting bracket (13). A worm (14) is also provided inside the mounting bracket (13). The worm (14) is coaxially connected with the coaxial gear (15). A turbine (17) is meshed with the bottom of the worm (14). A transmission gear (18) is provided at the bottom of the turbine (17). A gear sleeve (23) that meshes with the transmission gear (18) is provided on the outer periphery of the cleaning cylinder (21).

3. The cleaning device for a twin-screw extruder according to claim 1, characterized in that: A fixed clamp (3) is fixedly installed at the middle of one side inner wall of the support frame (1). A first horizontal plate (4) is also provided at the middle of one side inner wall of the support frame (1). A clamping screw (6) is provided inside one side of the first horizontal plate (4). A first threaded block (7) is spirally connected to the outer circumference of the clamping screw (6). A movable clamp (8) corresponding to the fixed clamp (3) is welded to the side of the first threaded block (7) extending to the outside.

4. A cleaning device for a twin-screw extruder according to claim 3, characterized in that: One end of the clamping screw (6) is equipped with a clamping motor (5), which is fixedly embedded in the inner wall of one end of the first horizontal plate (4).

5. A cleaning device for a twin-screw extruder according to claim 1, characterized in that: The cleaning cylinder (21) is disposed between the fixed clamp (3) and the movable clamp (8), and the cleaning cylinder (21), the fixed clamp (3) and the movable clamp (8) are located on the same horizontal line.

6. A cleaning device for a twin-screw extruder according to claim 1, characterized in that: A control panel (2) is fixedly installed on the outer side of the support frame (1). The control panel (2) is fixedly installed on the outer side of the support frame (1) by means of inlay.

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