Extruder material filtering device for easily degradable polyethylene plastic particles

Abstract

The extruder material filtering device comprises an installation box, a filter and a hydraulic cylinder, an installation hole is formed in the side wall of the installation box in a penetrating mode, a feeding port communicated with the installation hole is formed in the front end of the installation box, and a discharging port communicated with the installation hole is formed in the rear end of the installation box. The filter comprises a mounting frame and a filter screen, the mounting frame is arranged in the mounting hole in a sliding mode, two connecting holes are formed in the mounting frame side by side in the axial direction, the connecting holes are used for connecting the feeding port and the discharging port, the filter screen is arranged in the connecting holes, and the hydraulic cylinder is arranged on the outer side of the mounting box; the driving device is used for driving the mounting frame to axially slide in the mounting hole. In the process of cleaning the filter screen on one side, the filter screen on the other side still filters impurities in the material, so that the time for the extruder provided with the filter device to stop discharging is short, and the productivity of the extruder is not easily influenced.

Description

Technical Field

[0001] The utility model relates to an extruder accessory, and particularly to an extruder material filtering device for easily degradable polyethylene plastic particles. Background Art

[0002] At present, a Chinese patent with the publication number CN212636542U discloses an extruder material filtering device, which includes a filter screen frame, a hydraulic cylinder and a filter screen. The filter screen is installed in the filter screen frame, and the hydraulic cylinder drives the filter screen frame to enter or withdraw from the extruder from the side.

[0003] One side of the filter screen frame is provided with a round hole, and the other side of the filter screen frame is provided with a blind hole. The blind hole and the round hole are coaxially arranged, and the diameter of the blind hole is larger than that of the round hole. The filter screen is arranged in the blind hole. A square groove communicating with the blind hole is formed in the side wall of the filter screen frame. The filter screen includes a clamping ring and a filter medium fixed in the clamping ring. The convex block on the side surface of the clamping ring is located in the square groove, and a bolt passes through the convex block to connect the filter screen and the filter screen frame.

[0004] When the filter screen in the above filtering device needs to be replaced, first, the operator needs to pull out the filter screen frame through the hydraulic cylinder so that the filter screen completely exits the extruder. Then, the operator needs to unscrew the bolt and take out the old filter screen. Finally, the operator needs to put the new filter screen into the blind hole and lock it. During this process, the extruder equipped with the above filtering device is in a state of stopping material discharge, which will affect the production capacity of the extruder equipped with the above filtering device. Summary of the Invention

[0005] In view of this, the purpose of the utility model is to provide an extruder material filtering device for easily degradable polyethylene plastic particles, which has the advantage that the production capacity of the extruder is not easily affected.

[0006] To solve the above technical problems, the technical solution of the utility model is: an extruder material filtering device for easily degradable polyethylene plastic particles, which includes an installation box, a filter and a hydraulic cylinder. An installation hole is penetrated through the side wall of the installation box. A feed port communicating with the installation hole is opened at the front end of the installation box. A discharge port communicating with the installation hole is opened at the rear end of the installation box, and the discharge port and the feed port are coaxially arranged. The filter includes an installation frame and a filter screen. The installation frame is slidably arranged in the installation hole. Two connection holes are arranged side by side along the axial direction on the installation frame, and the connection holes are used to connect the feed port and the discharge port. The filter screen is arranged in the connection holes. The hydraulic cylinder is arranged outside the installation box and is used to drive the installation frame to slide axially in the installation hole.

[0007] Through the above technical solution, the two connection holes are named as the left connection hole and the right connection hole. When in use, the hydraulic cylinder drives the mounting frame to move axially to the right in the mounting hole, so that the left connection hole is connected with the feed port and the discharge port. At this time, the filter screen located inside the left connection hole can be used to filter the material flowing through.

[0008] When there are a lot of impurities attached to the filter screen inside the left connecting hole, the mounting frame is driven by the hydraulic cylinder to move axially to the left in the mounting hole, so that the right connecting hole is connected with the feed port and the discharge port. At the same time, the filter screen in the left connecting hole is located outside the mounting box, and the user can clean or replace the filter screen in the left connecting hole.

[0009] While the filter on one side is being cleaned, the filter on the other side is still filtering impurities in the material, so that the extruder equipped with the filtering device is in a shorter time of stopping discharging materials, and its production capacity is not easily affected.

[0010] Preferably, a mounting opening is provided at the upper end of the mounting frame opposite to the filter screen, and the filter screen is slidably connected in the corresponding mounting opening.

[0011] Through the above technical solution, the filter is slidably connected in the corresponding installation opening, which has the advantage of convenient disassembly and assembly, and can greatly shorten the time required for cleaning or replacing the filter.

[0012] Preferably, the filter screen comprises a support frame and a filter cloth arranged inside the support frame, and an outer wall of the support frame is in close contact with an inner wall of the installation opening.

[0013] Through the above technical solution, the support frame can support and protect the filter cloth, making the filter cloth less likely to be damaged.

[0014] Preferably, a connecting groove is provided between the two connecting holes, and the connecting groove is provided along the sliding direction of the mounting frame.

[0015] Through the above technical solution, a connecting groove is added between the two connecting holes, so that when the mounting frame is driven to move by the hydraulic cylinder, the material discharged by the extruder can still enter the box body, and it is not easy to block the discharge port of the extruder and hinder the use of the extruder.

[0016] Preferably, two push baffles are provided on the inner wall of the mounting hole, and the two push baffles are respectively arranged on both sides of the feed port, and both of the two push baffles extend into the connecting groove and press against the inner groove wall of the connecting groove.

[0017] Through the above technical solution, during the process of driving the mounting frame to move by the hydraulic cylinder, the two pusher plates can push the materials in the connecting groove into the next connecting groove, thereby reducing the waste of materials.

[0018] Preferably, receiving grooves for placing the pusher baffles are provided at the opposite sides of the two connecting holes.

[0019] Through the above technical solution, receiving grooves are provided at the opposite sides of the two connecting holes, so that the pusher baffles will not block the connecting holes and are not likely to affect the passing efficiency of the materials.

[0020] Preferably, the two pusher baffles are both inclined, and the distance between the two pusher baffles gradually decreases from the outside of the mounting box to the inside of the mounting box.

[0021] Through the above technical solution, the pusher plate is inclined, and can push the materials in the connecting groove more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the embodiment;

[0023] Figure 2 is a schematic structural diagram of the mounting box.

[0024] Reference numerals: 1, mounting box; 2, filter; 21, mounting frame; 22, filter net; 221, support frame; 222, filter cloth; 3, hydraulic cylinder; 4, mounting hole; 5, feed inlet; 6, discharge outlet; 7, connecting hole; 8, mounting opening; 9, connecting groove; 10, pusher baffle; 11, receiving groove. EMBODIMENTS

[0025] The following further details the specific embodiments of the present invention in conjunction with the drawings, so that the technical solutions of the present invention are easier to understand and master.

[0026] A material filtering device for an extruder for easily degradable polyethylene plastic particles, as Figure 1 、 Figure 2 shown, includes a mounting box 1, a filter 2 and a hydraulic cylinder 3. A mounting hole 4 is penetrated through the side wall of the mounting box 1. A feed inlet 5 communicating with the mounting hole 4 is opened at the front end of the mounting box 1. A discharge outlet 6 communicating with the mounting hole 4 is opened at the rear end of the mounting box 1, and the discharge outlet 6 and the feed inlet 5 are coaxial. The filter 2 includes a mounting frame 21 and a filter net 22. The mounting frame 21 is slidably arranged in the mounting hole 4. Two connecting holes 7 are arranged side by side along the axial direction on the mounting frame 21. The connecting holes 7 are used to connect the feed inlet 5 and the discharge outlet 6. In this embodiment, there are two filter nets 22 and they are respectively arranged in the two connecting holes 7. The hydraulic cylinder 3 is arranged outside the mounting box 1 and is used to drive the mounting frame 21 to slide axially in the mounting hole 4.

[0027] An installation opening 8 is formed at the upper end of the mounting bracket 21 opposite to the filter screen 22, and the filter screen 22 is slidably connected in the corresponding installation opening 8. The filter screen 22 includes a support frame 221 and a filter cloth 222 arranged inside the support frame 221, and the outer wall of the support frame 221 is in close contact with the inner wall of the installation opening 8.

[0028] A connecting groove 9 is arranged between the two connecting holes 7, and the connecting groove 9 is arranged along the sliding direction of the mounting bracket 21. Two pushing baffles 10 are arranged on the inner wall of the mounting hole 4, and the two pushing baffles 10 are respectively arranged on both sides of the feeding port 5. The two pushing baffles 10 both extend into the connecting groove 9 and abut against the inner groove wall of the connecting groove 9. Storage grooves 11 for placing the pushing baffles 10 are arranged at the opposite sides of the two connecting holes 7. The two pushing baffles 10 are both inclined, and the distance between the two pushing baffles 10 gradually decreases from the outside to the inside of the installation box 1.

[0029] In this embodiment, the cylinder body of the hydraulic cylinder 3 is fixedly connected to the rear side of the installation box 1, and a connecting piece is arranged at the end of the piston rod of the hydraulic cylinder 3. The connecting piece is connected to the end of the mounting bracket 21 to drive the mounting bracket 21 to slide.

[0030] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A material filter device for an extruder of easily degradable polyethylene plastic particles, characterized in that: The invention comprises an installation box (1), a filter (2) and a hydraulic cylinder (3); a side wall of the installation box (1) is provided with an installation hole (4); a front end of the installation box (1) is provided with a feed port (5) connected to the installation hole (4); a rear end of the installation box (1) is provided with a discharge port (6) connected to the installation hole (4); and the discharge port (6) is coaxial with the feed port (5); the filter (2) comprises a mounting frame (21) and a filter screen (22); the mounting frame (21) is slidably arranged in the installation hole (4); two connecting holes (7) are arranged side by side along the axial direction on the mounting frame (21); the connecting hole (7) is used to connect the feed port (5) and the discharge port (6); the filter screen (22) is arranged in the connecting hole (7); and the hydraulic cylinder (3) is arranged on the outside of the installation box (1) to drive the mounting frame (21) to slide along the axial direction in the installation hole (4).

2. The extruder material filtering device for easily degradable polyethylene plastic particles according to claim 1 is characterized in that: An installation opening (8) is provided at the upper end of the installation frame (21) opposite to the filter screen (22), and the filter screen (22) is slidably connected in the corresponding installation opening (8).

3. The extruder material filtering device for easily degradable polyethylene plastic particles according to claim 2 is characterized in that: The filter screen (22) comprises a support frame (221) and a filter cloth (222) arranged inside the support frame (221); the outer wall of the support frame (221) is in close contact with the inner wall of the installation opening (8).

4. The extruder material filtering device for easily degradable polyethylene plastic particles according to claim 1 is characterized in that: A connecting groove (9) is provided between the two connecting holes (7), and the connecting groove (9) is provided along the sliding direction of the mounting frame (21).

5. The extruder material filtering device for easily degradable polyethylene plastic particles according to claim 4 is characterized in that: Two material pushing baffles (10) are arranged on the inner wall of the mounting hole (4), and the two material pushing baffles (10) are arranged on both sides of the feed port (5). Both of the material pushing baffles (10) extend into the connecting groove (9) and press against the inner groove wall of the connecting groove (9).

6. The extruder material filtering device for easily degradable polyethylene plastic particles according to claim 5 is characterized in that: The two connecting holes (7) are both provided with receiving grooves (11) for receiving the material pushing baffle plates (10).

7. The extruder material filtering device for easily degradable polyethylene plastic particles according to claim 6 is characterized in that: The two material pushing baffles (10) are both arranged at an inclination, and the distance between the two material pushing baffles (10) gradually decreases from the outside of the installation box (1) to the inside of the installation box (1).

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