Efficient cleaning device for extruder screw

Abstract

The efficient cleaning device comprises a spraying tank, a supporting frame and a three-jaw chuck, a lifting assembly used for adjusting the height of the three-jaw chuck is arranged on the supporting frame, a rod inlet is formed in the top of the spraying tank, a sand blasting gun head is arranged at the position, close to the top, of the side edge of the spraying tank, one end of the sand blasting gun head is located in the spraying tank, and the other end of the sand blasting gun head is located in the spraying tank. The end, away from the sand blasting gun head, of the communicating pipe communicates with a sand blasting assembly. The screw rod is clamped through the three-jaw chuck, the height position of the three-jaw chuck is adjusted through the lifting assembly, the screw rod stretches into the spraying tank from the rod inlet, and in the descending process of the screw rod, air pressure is applied to the communicating pipe through the sand spraying assembly, and the sand spraying gun head sprays carborundum to clean the surface of the screw rod.

Description

Technical Field

[0001] This application relates to the field of screw cleaning, and more particularly to a high-efficiency screw cleaning device for extruders. Background Technology

[0002] Screw extruders rely on the pressure and shear force generated by the rotating screw to fully plasticize and uniformly mix the resin, which is then extruded through a die. During the extrusion process, because the plastic is in a molten state, some resin residue and carbon deposits will solidify on the screw surface after extrusion and cooling. When processing another product, these resin residues and carbon deposits on the screw must be cleaned before operation.

[0003] Currently, traditional screw cleaning methods involve manual grinding combined with open flame heating and melting, which damages the screw, shortens its service life, increases production costs, and cannot completely remove residues at the screw's corners, thus affecting product quality. Utility Model Content

[0004] To facilitate the cleaning of the screw surface, this application provides an efficient cleaning device for extruder screws.

[0005] This application provides a high-efficiency cleaning device for extruder screws, which adopts the following technical solution:

[0006] A high-efficiency cleaning device for an extruder screw includes a spray can, a support frame, and a three-jaw chuck. A connecting plate is provided on the support frame, and a lifting component for adjusting the height of the connecting plate is also provided on the support frame. The three-jaw chuck is installed at the bottom of the connecting plate, and a drive motor for driving the three-jaw chuck to rotate is installed above the connecting plate. An inlet is provided at the top of the spray can, and a sandblasting gun head is provided on the side of the spray can near the top. One end of the sandblasting gun head is located inside the spray can, and the other end is connected to a connecting pipe. The end of the connecting pipe away from the sandblasting gun head is connected to a sandblasting component.

[0007] By adopting the above technical solution, the screw is held by a three-jaw chuck, and the height of the three-jaw chuck is adjusted by the lifting component so that the screw extends into the spray can from the inlet. During the descent of the screw, air pressure is applied to the connecting pipe by the sandblasting component, and the sandblasting gun head sprays diamond abrasive to impact the surface of the screw. At the same time, the drive motor is started to make the screw rotate and clean the residue on the surface of the screw.

[0008] Optionally, the sandblasting assembly includes a sandblasting canister and a pressurizing pipe. The bottom of the sandblasting canister is connected to the pressurizing pipe and a connecting pipe via a T-connector. A pressurizing pump is installed on the sandblasting canister.

[0009] By adopting the above technical solution, by adding diamond abrasive into the sandblasting tank and simultaneously starting the pressure pump, pressure is applied to output the diamond abrasive along the connecting pipe and spray it out through the sandblasting gun head.

[0010] Optionally, a blower is installed at the bottom of the blasting tank.

[0011] By adopting the above technical solution, the amount of diamond abrasive falling from the sandblasting tank is controlled by shutting off the air blower.

[0012] Optionally, the sandblasting tank is connected to a feeding hopper.

[0013] By adopting the above technical solution, the corundum can be conveniently poured into the sandblasting tank through the feeding hopper.

[0014] Optionally, the lifting assembly includes a lifting cylinder and a lifting plate. The lifting cylinder is mounted vertically on a support frame. The lifting plate is fixedly connected to the end of the piston rod of the lifting cylinder. The support frame is provided with a guide rail that cooperates with the lifting plate. The connecting plate is connected to the lifting plate.

[0015] By adopting the above technical solution, the screw is clamped by a three-jaw chuck, the lifting cylinder is activated, the piston rod of the lifting cylinder is retracted, and the screw is moved downward.

[0016] Optionally, the connecting plate and the lifting plate are rotatably connected by a rotating shaft, and an adjusting cylinder is installed on the lifting plate, with the piston rod end of the adjusting cylinder hinged to the connecting plate.

[0017] By adopting the above technical solution, the position of the connecting plate is adjusted by adjusting the cylinder. When the adjusting cylinder is activated, the piston rod of the adjusting cylinder extends, and the connecting plate moves, so that the three-jaw chuck is offset from above the spray can, making it convenient for the operator to install the screw onto or remove it from the three-jaw chuck. When the adjusting cylinder is activated, the piston rod of the adjusting cylinder retracts, and the connecting plate moves, so that the three-jaw chuck and the screw move above the spray can for cleaning.

[0018] Optionally, a separator is connected to the bottom of the spray can via a connecting pipe.

[0019] By adopting the above technical solution, the separator is started, and the residue after cleaning in the spray can is transported to the separator through the connecting pipe by negative pressure. The separator separates the residue for easy processing.

[0020] Optionally, a vibrating screen is installed at the bottom of the separator.

[0021] By adopting the above technical solution, substances with large mass in the separator fall through the bottom of the separator into the vibrating screen, where the vibrating screen is used to screen the separated substances.

[0022] Optionally, a dust collection box is connected to the top of the separator.

[0023] By adopting the above technical solution, substances with small mass separated in the separator pass through the dust collection box connected to the top of the separator, where the dust collection box adsorbs the powder.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] The screw is held by a three-jaw chuck, and the height of the three-jaw chuck is adjusted by the lifting component so that the screw can be inserted into the spray can from the inlet. During the descent of the screw, air pressure is applied to the connecting pipe by the sandblasting component, and the sandblasting gun head sprays diamond abrasive to impact the surface of the screw. At the same time, the drive motor is started to make the screw rotate and clean the residue on the surface of the screw.

[0026] The position of the connecting plate is adjusted by adjusting the cylinder. Activating the adjusting cylinder extends the piston rod, moves the connecting plate, and shifts the three-jaw chuck away from the spray can, making it easier for the operator to install or remove the screw from the three-jaw chuck. Activating the adjusting cylinder retracts the piston rod, moves the connecting plate, and moves the three-jaw chuck and screw above the spray can for cleaning. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency cleaning device for an extruder screw.

[0028] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0029] Figure 3 yes Figure 2 Enlarged schematic diagram of part B.

[0030] Figure 4 This is a schematic diagram illustrating the structure of the sandblasting assembly in the embodiments of this application.

[0031] Explanation of reference numerals in the attached diagram: 1. Spray can; 11. Inlet; 12. Sandblasting gun head; 121. Connecting pipe; 2. Support frame; 21. Lifting cylinder; 22. Lifting plate; 221. Adjusting cylinder; 3. Connecting plate; 31. Three-jaw chuck; 32. Drive motor; 4. Sandblasting assembly; 41. Sandblasting can; 42. Pressurization pipe; 43. T-pipe; 44. Feed hopper; 45. Airlock; 5. Separator; 6. Vibrating screen; 7. Dust collector. Detailed Implementation

[0032] The present application will be further described in detail below with reference to all the accompanying drawings.

[0033] This application discloses an efficient cleaning device for extruder screws.

[0034] Reference Figures 1-4 A high-efficiency cleaning device for an extruder screw includes a spray can 1, a support frame 2, and a three-jaw chuck 31. A connecting plate 3 is provided on the support frame 2, and a lifting assembly for adjusting the height of the connecting plate 3 is provided on the support frame 2. The lifting assembly includes a lifting cylinder 21 and a lifting plate 22. The lifting cylinder 21 is installed vertically on the support frame 2, and the lifting plate 22 is fixedly connected to the end of the piston rod of the lifting cylinder 21. A guide rail that cooperates with the lifting plate 22 is provided on the support frame 2. The connecting plate 3 is connected to the lifting plate 22. The three-jaw chuck 31 is installed at the bottom of the connecting plate 3, and a drive motor 32 that drives the three-jaw chuck 31 to rotate is installed above the connecting plate 3. The screw is clamped by the three-jaw chuck 31, and the lifting cylinder 21 is activated. The piston rod of the lifting cylinder 21 retracts, driving the screw to move downward.

[0035] The spray can 1 has an inlet 11 at the top, and a sandblasting gun head 12 is located on the side of the spray can 1 near the top. One end of the sandblasting gun head 12 is located inside the spray can 1, and the other end is connected to a connecting pipe 121. The end of the connecting pipe 121 away from the sandblasting gun head 12 is connected to the sandblasting assembly 4. The screw is held by a three-jaw chuck 31, and the height of the three-jaw chuck 31 is adjusted by a lifting assembly so that the screw extends into the spray can 1 from the inlet 11. During the descent of the screw, air pressure is applied to the connecting pipe 121 through the sandblasting assembly 4, and the sandblasting gun head 12 sprays diamond abrasive to impact the surface of the screw. At the same time, the drive motor 32 is started to rotate the screw and clean the residue on the surface of the screw.

[0036] The sandblasting assembly 4 includes a sandblasting tank 41 and a pressurizing pipe 42. The bottom of the sandblasting tank 41 is connected to the pressurizing pipe 42 and the connecting pipe 121 via a three-way pipe 43. A pressurizing pump is installed on the sandblasting tank 41. By adding diamond abrasive into the sandblasting tank 41 and simultaneously starting the pressurizing pump, pressure is applied to output the diamond abrasive along the connecting pipe 121, which is then sprayed out through the sandblasting nozzle 12. A feeding hopper 44 is connected to the sandblasting tank 41, allowing for convenient pouring of diamond abrasive into the sandblasting tank 41. A blower 45 is installed at the bottom of the sandblasting tank 41, and the amount of diamond abrasive falling into the sandblasting tank 41 is controlled by turning off the blower 45.

[0037] The connecting plate 3 and the lifting plate 22 are rotatably connected via a rotating shaft. An adjusting cylinder 221 is installed on the lifting plate 22, and the end of the piston rod of the adjusting cylinder 221 is hinged to the connecting plate 3. The position of the connecting plate 3 is adjusted by adjusting the adjusting cylinder 221. When the adjusting cylinder 221 is activated, the piston rod of the adjusting cylinder 221 extends, and the connecting plate 3 moves, causing the three-jaw chuck 31 to deviate from above the spray can 1, making it easier for the operator to install or remove the screw from the three-jaw chuck 31. When the adjusting cylinder 221 is activated, the piston rod of the adjusting cylinder 221 retracts, and the connecting plate 3 moves, causing the three-jaw chuck 31 and the screw to move above the spray can 1 for cleaning the screw.

[0038] A separator 5 is connected to the bottom of the spray can 1 via a connecting pipe. When the separator 5 is started, the residue cleaned from the spray can 1 is transported to the separator 5 through the connecting pipe using negative pressure. The separator 5 then separates the residue for easy processing.

[0039] A vibrating screen 6 is installed at the bottom of the separator 5. Larger particles in the separator 5 fall through the bottom of the separator 5 into the vibrating screen 6, where they are sieved. A dust collector 7 is connected to the top of the separator 5. Smaller particles in the separator 5 pass through the dust collector 7 connected to the top of the separator 5, where the dust collector 7 adsorbs the powder.

[0040] The implementation principle of the high-efficiency cleaning device for extruder screws in this application embodiment is as follows: the screw is clamped by the three-jaw chuck 31, the lifting cylinder 21 is started, the piston rod of the lifting cylinder 21 is retracted, and the screw is moved downward, so that the screw extends into the spray can 1 from the screw inlet 11. During the descent of the screw, air pressure is applied to the connecting pipe 121 through the sandblasting assembly 4, and the sandblasting gun head 12 sprays diamond sand to impact the surface of the screw. At the same time, the drive motor 32 is started to make the screw rotate and clean the residue on the surface of the screw.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high efficiency cleaning device for an extruder screw, characterized by: Including spray tank (1), support frame (2) and three jaw chuck (31), the support frame (2) is provided with connecting plate (3), the support frame (2) is provided with lifting assembly for adjusting the height of connecting plate (3), the three jaw chuck (31) is installed at the bottom of connecting plate (3), the connecting plate (3) is provided with drive motor (32) for driving three jaw chuck (31) rotation above, the spray tank (1) top is provided with the rod inlet (11), the spray tank (1) side is provided with sand blasting gun head (12) near the top position, the sand blasting gun head (12) one end is located in the spray tank (1), the other end is connected with the communication pipe (121), the communication pipe (121) is communicated with sand blasting assembly (4) away from the sand blasting gun head (12) one end.

2. A high efficiency cleaning device for an extruder screw as defined in claim 1, characterized in that: The sand blasting assembly (4) includes sand blasting tank (41) and pressurizing pipe (42), the sand blasting tank (41) bottom is communicated with pressurizing pipe (42) and communication pipe (121) through tee pipe (43), the sand blasting tank (41) is installed with pressurizing pump.

3. A high efficiency cleaning device for an extruder screw as defined in claim 2, characterized in that: The sand blasting tank (41) bottom is installed with fan (45).

4. The high efficiency cleaning device for extruder screws of claim 2, wherein: The sand blasting tank (41) is communicated with feeding hopper (44).

5. The high efficiency cleaning device for an extruder screw of claim 1, wherein: The lifting assembly includes lifting cylinder (21) and lifting plate (22), the lifting cylinder (21) is installed on the support frame (2) along the vertical direction, the lifting plate (22) is fixedly connected with the piston rod end of lifting cylinder (21), the support frame (2) is provided with guide rail matched with lifting plate (22), the connecting plate (3) is connected with lifting plate (22).

6. A high efficiency cleaning device for an extruder screw as defined in claim 5, characterized in that: The connecting plate (3) and lifting plate (22) are rotatably connected through rotating shaft, the adjusting cylinder (221) is installed on the lifting plate (22), and the piston rod end of the adjusting cylinder (221) is hinged with the connecting plate (3).

7. A high efficiency cleaning device for an extruder screw as defined in claim 1, characterized in that: The bottom of the spray tank (1) is connected with the separator (5) through the connecting pipe.

8. A high efficiency cleaning device for an extruder screw as defined in claim 7, characterized in that: The bottom of the separator (5) is installed with the vibrating screen (6).

9. A high efficiency cleaning device for an extruder screw as defined in claim 7, characterized in that: The top of the separator (5) is communicated with the dust removal box (7).

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