Cleaning device for barrel of screw extruder

Abstract

The utility model discloses a cleaning device for a barrel of a screw extruder, which belongs to the technical field of screw extruders and comprises a cleaning component, the cleaning component comprises a cleaning head, the cleaning head is fixedly connected with one end of a transmission shaft, and the other end of the transmission shaft is in transmission connection with an output end of a first motor; the device further comprises a lifting assembly, the lifting assembly comprises a lifting plate, and the two sides of the lifting plate are in threaded fit with the two sets of lead screws correspondingly. By arranging a third motor, a third belt wheel, a second synchronous belt and other structures, the cleaning device is simple in structure, convenient to use and practical, two lead screws can be driven to rotate at the same time and can drive a lifting plate to move up and down, so that the height of the cleaning assembly is adjusted, an operator can conveniently align to barrels with different heights, the cleaning work difficulty is reduced, and the cleaning efficiency is improved. And by arranging the pushing assembly, the cleaning assembly can be driven to move, an operator can conveniently clean the deep position in the barrel, and the cleaning efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw extruders, in particular to a cleaning device for a barrel of a screw extruder. Background Art

[0002] Screw extruder is a common equipment in plastic extrusion production line. It is mainly used to melt and plasticize polymer materials, and extrude the materials into shapes by rotating the screw inside the barrel. It has a wide range of applications in the plastic processing industry and can process a variety of plastic products, such as films, tubes, plates, ribbons, wires, rods, etc. It can also be used for granulation. There are many types of screw extruders. Among them, the single-screw extruder is composed of an Archimedean screw rotating in a heated barrel. It has the advantages of simple structure, easy manufacturing, high processing efficiency and low price. It is the most mature and most widely used type of extruder. After long-term use, some residues will adhere to the inner wall of the barrel of the screw extruder, and these residues will affect the normal use of the screw extruder.

[0003] A search revealed that in the prior art, Chinese Patent Publication No. CN218227765U discloses a cleaning device for a screw extruder barrel, comprising a mounting frame, a driving mechanism, and a cleaning rod. The mounting frame is provided with a roller at the bottom, and the driving mechanism is disposed within the mounting frame. The driving mechanism comprises a drive motor, a driving wheel, a driven wheel, a mounting bearing, and a connecting piece. The drive motor is mounted at the bottom of the mounting frame, the driving wheel is mounted on the output shaft of the drive motor, and the mounting bearing is mounted on the top of the mounting frame. One end of the cleaning rod passes through the mounting bearing and extends into the mounting frame. The driven wheel is mounted on the end of the cleaning rod located within the mounting frame. The connecting piece is sleeved on the driving wheel and the driven wheel. The length of the cleaning rod away from the mounting frame is greater than the length of the end of the cleaning rod extending into the mounting frame. A cleaning brush is disposed at the end of the cleaning rod away from the mounting frame. The cleaning rod is driven to rotate by the driving mechanism, automatically completing the cleaning of the screw barrel.

[0004] However, the device also has the following defects:

[0005] When using this device, the cleaning rod and the cleaning brush need to be aligned and inserted into the cylinder. The device can change the horizontal position and angle of the cleaning rod and the cleaning brush through the roller at the bottom, but it is difficult to adjust the height of the cleaning rod and the cleaning brush, which brings trouble to the operator's cleaning work. This device does not solve this problem. Utility Model Content

[0006] The purpose of the utility model is to provide a cleaning device for the barrel of a screw extruder. By setting a first motor, two sets of screws can be driven to rotate simultaneously, and the two sets of screws can drive the lifting plate to move up and down, thereby adjusting the height of the cleaning component, making it convenient for operators to align with barrels of different heights, reducing the difficulty of cleaning work, and solving the problems raised in the above-mentioned background technology.

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

[0008] A cleaning device for a screw extruder barrel, comprising a cleaning assembly, wherein the cleaning assembly comprises a cleaning head, wherein the cleaning head is fixedly connected to one end of a transmission shaft, and the other end of the transmission shaft is transmission-connected to an output end of a first motor;

[0009] It also includes a lifting assembly, the lifting assembly includes a lifting plate, and two sides of the lifting plate are respectively engaged with two sets of screw threads;

[0010] It also includes a pushing component, which includes a second motor and a threaded sleeve. The output end of the second motor is fixedly mounted with a first pulley. The first pulley is connected to the second pulley through a first synchronous belt. The second pulley is threadedly engaged with the surface of the threaded sleeve.

[0011] Preferably, the bottom of the screw rod is rotatably mounted on the bottom plate, the two groups of bottom plates are fixedly mounted on both sides of the top surface of the mobile vehicle, and the top of the screw rod is rotatably mounted on the top plate.

[0012] Preferably, a third pulley is rotatably installed in the middle of the top surface of the top plate, and two groups of the third pulleys are connected by a second synchronous belt transmission, one group of the third pulleys is connected to the output end of the third motor, and the third motor is fixedly installed on the top plate through a mounting frame.

[0013] Preferably, both sides of the bottom surface of the top plate are fixedly connected to the tops of the two sets of sliding rods respectively, the bottoms of the sliding rods are fixedly mounted on the bottom plate, and the sliding rods are slidably matched with the lifting plate.

[0014] Preferably, the threaded sleeve is sleeved on the surface of the transmission shaft, the threaded sleeve is rotationally matched with the transmission shaft, one end of the threaded sleeve is rotationally connected to the cleaning head, and the other end of the threaded sleeve is rotationally matched with the mounting plate.

[0015] Preferably, the second motor is fixedly mounted on the lifting plate, a limiting ring is fixedly mounted on one side of the second pulley, and the limiting ring is rotatably connected to a limiting groove provided on one side of the lifting plate.

[0016] Preferably, the first motor is fixedly connected to the middle of the mounting plate, two sets of guide rods are fixedly mounted on both sides of the mounting plate, and the guide rods are slidably matched with the lifting plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model has a simple structure, is convenient and practical by arranging the third motor, the third pulley and the second synchronous belt. The utility model can drive the two sets of screw rods to rotate simultaneously. The two sets of screw rods can drive the lifting plate to move up and down, so as to adjust the height of the cleaning component, which is convenient for the operator to aim at cylinders at different heights, reducing the difficulty of the cleaning work. The pushing component is provided to drive the cleaning component to move, which is convenient for the operator to clean deep inside the cylinder and improve the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 Schematic diagram of the lifting component structure;

[0021] Figure 3 To promote the schematic diagram of the component structure;

[0022] Figure 4 Schematic diagram of the limiting ring and limiting groove structure;

[0023] Figure 5 Schematic diagram of the transmission shaft structure.

[0024] In the figure: 1. Cleaning head; 2. Drive shaft; 3. First motor; 4. Lifting plate; 5. Screw; 6. Second motor; 7. Threaded sleeve; 8. First pulley; 9. First synchronous belt; 10. Second pulley; 11. Bottom plate; 12. Moving vehicle; 13. Top plate; 14. Third pulley; 15. Second synchronous belt; 16. Third motor; 17. Sliding rod; 18. Mounting plate; 19. Limiting ring; 20. Limiting groove; 21. Guide rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1 to 5 , the utility model provides a technical solution:

[0027] A cleaning device for a screw extruder barrel includes a cleaning assembly, which includes a cleaning head 1. The cleaning head 1 is fixedly connected to one end of a transmission shaft 2, and the other end of the transmission shaft 2 is transmission-connected to the output end of a first motor 3. The first motor 3 is fixedly connected to the middle of a mounting plate 18. Two groups of guide rods 21 are fixedly installed on both sides of the mounting plate 18, and the guide rods 21 are slidingly matched with a lifting plate 4.

[0028] By setting up the first motor 3, the cleaning head 1 can be driven to rotate through the transmission shaft 2, and the rotating cleaning head 1 repeatedly brushes off the residues on the inner wall of the cylinder, thereby improving the cleaning effect. By setting up the guide rod 21, the stability of the pushing component in pushing the cleaning head 1 can be improved, thereby improving the cleaning effect, and preventing the first motor 3 and the mounting plate 18 from rotating.

[0029] It also includes a lifting assembly, which includes a lifting plate 4, the two sides of the lifting plate 4 are respectively threaded with two groups of screw rods 5, the bottom of the screw rod 5 is rotatably mounted on the bottom plate 11, the two groups of bottom plates 11 are respectively fixedly mounted on both sides of the top surface of the mobile vehicle 12, the top of the screw rod 5 is rotatably mounted on the top plate 13, and a third pulley 14 is rotatably mounted in the middle of the top surface of the top plate 13. The two groups of third pulleys 14 are connected by a second synchronous belt 15, one group of third pulleys 14 is connected to the output end of the third motor 16, and the third motor 16 is fixedly mounted on the top plate 13 through a mounting frame. The two sides of the bottom surface of the top plate 13 are respectively fixedly connected to the top of the two groups of slide rods 17, the bottom of the slide rod 17 is fixedly mounted on the bottom plate 11, and the slide rod 17 slides with the lifting plate 4.

[0030] By setting up the third motor 16, the two sets of third pulleys 14 and the second synchronous belt 15 can drive the screw rod 5 to rotate, so that the lifting plate 4 can move up and down, thereby achieving the purpose of adjusting the height of the cleaning component. By setting up two sets of screw rods 5, the two sides of the lifting plate 4 can be evenly stressed, thereby reducing friction, and used in conjunction with the slide rod 17, the stability of the lifting plate 4 when moving up and down is greatly improved.

[0031] It also includes a pushing component, which includes a second motor 6 and a threaded sleeve 7. The output end of the second motor 6 is fixedly mounted with a first pulley 8, and the first pulley 8 is transmission-connected to the second pulley 10 through a first synchronous belt 9. The second pulley 10 is threadedly matched with the surface of the threaded sleeve 7, and the threaded sleeve 7 is sleeved on the surface of the transmission shaft 2. The threaded sleeve 7 rotates with the transmission shaft 2, one end of the threaded sleeve 7 is rotationally connected to the cleaning head 1, and the other end of the threaded sleeve 7 is rotationally matched with the mounting plate 18. The second motor 6 is fixedly mounted on the lifting plate 4, and a limiting ring 19 is fixedly mounted on one side of the second pulley 10, and the limiting ring 19 is rotationally connected to the limiting groove 20 opened on one side of the lifting plate 4.

[0032] By setting up a second motor 6, the second pulley 10 can be driven to rotate through the first pulley 8 and the first synchronous belt 9, so that the threaded sleeve 7 that is threadedly matched with the second pulley 10 moves, thereby pushing the cleaning head 1 to move inside the cylinder, thereby improving the cleaning efficiency of the cylinder, and by setting up a limit ring 19 and a limit groove 20 for use together, the second pulley 10 is prevented from being separated from the lifting plate 4, thereby ensuring the normal movement of the threaded sleeve 7.

[0033] When in use, the device is moved to a designated position, the third motor 16 is started, and the output end of the third motor 16 is controlled to start rotating. The output end of the third motor 16 drives the two sets of screw rods 5 to rotate simultaneously through the two sets of third pulleys 14 and the second synchronous belt 15, so that the lifting plate 4 moves up and down, thereby moving the cleaning assembly up and down, and moving the cleaning assembly to the same height as the cylinder to be cleaned. By pushing the mobile car 12, the horizontal position and angle of the cleaning assembly are adjusted so that the cleaning head 1 and the transmission shaft 2 are aligned and inserted into one end of the cylinder, the first motor 3 is started, and the output of the first motor 3 is driven by the second synchronous belt 15. The output end drives the cleaning head 1 to start rotating through the transmission shaft 2, and the rotating cleaning head 1 brushes off the residue on the inner wall of the cylinder, starts the second motor 6, and controls the output end of the second motor 6 to rotate. The output end of the second motor 6 drives the second pulley 10 to rotate through the first pulley 8 and the first synchronous belt 9, so that the threaded sleeve 7 threadedly matched with the second pulley 10 starts to move, and the threaded sleeve 7 drives the transmission shaft 2, the mounting plate 18, the first motor 3, the guide rod 21 and the cleaning head 1 to move together, so that the cleaning head 1 moves toward the inside of the cylinder, thereby cleaning different positions inside the cylinder.

[0034] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cleaning device for a screw extruder barrel, characterized in that: The cleaning assembly comprises a cleaning head (1), the cleaning head (1) is fixedly connected to one end of a transmission shaft (2), and the other end of the transmission shaft (2) is transmission-connected to the output end of a first motor (3); It also includes a lifting assembly, the lifting assembly including a lifting plate (4), and two sides of the lifting plate (4) are respectively threadedly engaged with two sets of screw rods (5); The invention also includes a pushing component, which includes a second motor (6) and a threaded sleeve (7). The output end of the second motor (6) is fixedly mounted with a first pulley (8). The first pulley (8) is connected to the second pulley (10) through a first synchronous belt (9). The second pulley (10) is threadedly matched with the surface of the threaded sleeve (7).

2. The cleaning device for a screw extruder barrel according to claim 1, characterized in that: The bottom of the screw rod (5) is rotatably mounted on the bottom plate (11), two groups of the bottom plates (11) are fixedly mounted on both sides of the top surface of the mobile vehicle (12), and the top of the screw rod (5) is rotatably mounted on the top plate (13).

3. The cleaning device for a screw extruder barrel according to claim 2, characterized in that: A third pulley (14) is rotatably mounted in the middle of the top surface of the top plate (13), two groups of the third pulleys (14) are connected in transmission via a second synchronous belt (15), one group of the third pulleys (14) is connected in transmission to the output end of a third motor (16), and the third motor (16) is fixedly mounted on the top plate (13) via a mounting bracket.

4. The cleaning device for a screw extruder barrel according to claim 3, characterized in that: The bottom sides of the top plate (13) are respectively fixedly connected to the tops of two groups of slide bars (17), the bottoms of the slide bars (17) are fixedly mounted on the bottom plate (11), and the slide bars (17) are slidably matched with the lifting plate (4).

5. The cleaning device for a screw extruder barrel according to claim 1, characterized in that: The threaded sleeve (7) is sleeved on the surface of the transmission shaft (2), and the threaded sleeve (7) and the transmission shaft (2) are rotationally matched. One end of the threaded sleeve (7) is rotationally connected to the cleaning head (1), and the other end of the threaded sleeve (7) is rotationally matched with the mounting plate (18).

6. The cleaning device for a screw extruder barrel according to claim 1, characterized in that: The second motor (6) is fixedly mounted on the lifting plate (4), and a limiting ring (19) is fixedly mounted on one side of the second pulley (10). The limiting ring (19) is rotatably connected to a limiting groove (20) provided on one side of the lifting plate (4).

7. The cleaning device for a screw extruder barrel according to claim 1, characterized in that: The first motor (3) is fixedly connected to the middle of the mounting plate (18), and two groups of guide rods (21) are fixedly installed on both sides of the mounting plate (18), and the guide rods (21) are slidably matched with the lifting plate (4).

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