Plastic crushing device

Abstract

The utility model relates to the technical field of plastic crushing equipment, in particular to a plastic crushing device, which is characterized in that a blanking space with an opening in the lower part is arranged between a filter barrel and an outer barrel, the bottom of the filter barrel is open, an extension pipe is communicated and mounted at the opening in the bottom of the filter barrel, and a gas storage component is communicated and mounted at one end of the extension pipe far away from the filter barrel; the air force storage assembly can blow air to the extension pipe in a pulse mode. According to the device, airflow is released once every several seconds through the air storage assembly, plastics accumulated in the extension pipe are impacted upwards through impact of the airflow, the accumulated plastics are dispersed in the crushing space, on one hand, the utilization rate of crushing blades on the upper portion of the crushing space is increased, and the overall efficiency is improved; and on the other hand, the crushed plastic particles are driven by the impact air flow to pass through the filtering holes more quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic crushing equipment, in particular to a plastic crushing device. Background Art

[0002] After the discarded plastic water bottles are recycled, they must be crushed before the subsequent granulation process can be carried out. When the existing plastic crusher performs the plastic crushing operation, the plastic particles crushed out are uneven in size, which reduces the plastic crushing effect and has an adverse effect on the reuse of plastic particles.

[0003] The prior art publication (announcement) number: CN220548538U discloses a plastic crusher, which achieves the purpose of pore classification during the plastic crushing process by adding a filter barrel. During the plastic crushing operation, the plastic particles can only fall out of the crushing area when they are crushed to the size of the filter holes. Although the device can solve the problem of uneven size of plastic particles to a certain extent, since the plastic in the crushing area will settle downward, most of the crushing work is completed by the crushing knife in the lower half, and the crushing knife in the upper half is not effectively utilized, and the crushing efficiency of the device is low. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the plastic in the crushing area will sink downward, resulting in most of the crushing work being completed by the crushing blades in the lower half, the crushing blades in the upper half are not effectively utilized, and the crushing efficiency of the device is low. A plastic crushing device is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A plastic crushing device comprises a filter barrel and an outer cylinder located outside the filter barrel, the filter barrel having filter holes on its circumference and a feed port on its top that can be sealed by a cover, the crushing space inside the filter barrel is rotatably installed with a vertically arranged rotating shaft, the circumference of the rotating shaft is installed with a crushing blade, the top end of the rotating shaft is transmission-connected with a motor, a blanking space with an open lower portion is provided between the filter barrel and the outer cylinder, the bottom of the filter barrel is open, an extension pipe is connected and installed at the open bottom of the filter barrel, an end of the extension pipe away from the filter barrel is connected and installed with an air storage component, and the air storage component can blow air into the extension pipe in a pulsed manner.

[0007] The gas storage assembly includes an air storage box, a switch valve is installed between the air storage box and the extension pipe, the air storage box is provided with an air inlet installed with a one-way valve, and the air inlet is connected to an inflation source.

[0008] The switch valve is an electromagnetic valve.

[0009] The switch valve includes a shell, one side of the shell has an air inlet end connected to the air storage box, and the other side has an exhaust end connected to the extension pipe, a first sealing plate and a second sealing plate are provided in the shell, the first sealing plate is tangent to the inner wall of the shell where the air inlet end is set, and the second sealing plate is sealed and fixed to the inner wall of the shell where the exhaust end is set, the first sealing plate and the second sealing plate are arranged tangently, the first sealing plate is provided with evenly distributed first air holes, and the second sealing plate is provided with evenly distributed second air holes. The first air holes and the second air holes can be connected or disconnected by pushing and pulling the first sealing plate, and the first sealing plate is connected to a push-pull power source.

[0010] The push-pull power source includes an electromagnetic push-pull assembly fixedly connected to the outside of the shell, and the electromagnetic push-pull assembly includes a movable iron core, and the movable iron core is fixed to the first sealing plate through a push-pull rod.

[0011] The extension tube is a U-shaped tube with a large opening at one end and a small opening at the other end. The large-opening end of the U-shaped tube is connected to the filter barrel, and the small-opening end of the U-shaped tube is connected to the shell.

[0012] The air storage box has a conical chamber, and the end of the conical chamber with a smaller opening is communicated with the air inlet end of the shell.

[0013] The inflation source is a compressor or an air pump.

[0014] The utility model proposes a plastic crushing device, which has the beneficial effect of releasing an air flow every few seconds through an air storage component, and the plastic accumulated in the extension tube is impacted upward by the impact of the air flow, so that the accumulated plastic is dispersed in the crushing space. On the one hand, the utilization rate of the crushing blades in the upper part of the crushing space is improved, thereby improving the overall efficiency. On the other hand, the impact of the air flow drives the crushed plastic particles to pass through the filter holes faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the switch valve structure of the present utility model.

[0017] In the figure: outer cylinder 1, blanking space 2, feed port 3, sealing cover 4, motor 5, rotating shaft 6, crushing blade 7, filter barrel 8, filter hole 9, inflation source 10, air inlet 11, air storage box 12, switch valve 13, extension tube 14, crushing space 15, electromagnetic push-pull assembly 16, push-pull rod 17, shell 18, first sealing plate 19, first air hole 20, air inlet end 21, exhaust end 22, second air hole 23, second sealing plate 24. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Reference Figure 1-2 , a plastic crushing device includes a filter barrel 8, an outer cylinder 1 located outside the filter barrel 8, the filter barrel 8 has filter holes 9 on its periphery and a feed port 3 on its top that can be blocked by a cover 4, the crushing space 15 inside the filter barrel 8 is rotatably installed with a vertically arranged rotating shaft 6, and a crushing blade 7 is installed on the periphery of the rotating shaft 6. The top of the rotating shaft 6 is transmission-connected to a motor 5, and a blanking space 2 with an open bottom is provided between the filter barrel 8 and the outer cylinder 1. The above structure can refer to the literature pointed out in the background technology. When working, the plastic is put into the crushing space 15 through the feed port 3, and the crushing blade 7 on the rotating shaft 6 is driven by the motor 5 to rotate and crush the particles. The particles matching the filter holes 9 enter the blanking space 2, and the bottom of the filter barrel 8 is open. An extension pipe 14 is connected to the open bottom of the filter barrel 8. The end of the extension pipe 14 away from the filter barrel 8 is connected to an air storage component. The air storage component can blow air to the extension pipe 14 in a pulsed manner. The pulsed manner means that an air flow is released to the extension pipe 14 at intervals of time, for example, at intervals of 3-10 seconds.

[0020] During the crushing process, the plastic will settle down in the filter barrel 8 into the extension tube 14. The extension tube 14 of the device is connected to a gas storage component, which releases air flow every few seconds. The impact of the air flow will push the plastic accumulated in the extension tube 14 upward, so that the accumulated plastic is dispersed in the crushing space 15. On the one hand, the utilization rate of the crushing blade 7 at the top of the crushing space 15 is improved, thereby improving the overall efficiency. On the other hand, the impact of the air flow drives the crushed plastic particles to pass through the filter hole 9 faster.

[0021] As an embodiment, the gas storage assembly includes an air storage box 12, a switch valve 13 is installed between the air storage box 12 and the extension tube 14, the air storage box 12 is provided with an air inlet 11 equipped with a one-way valve, and the air inlet 11 is connected to an inflation source 10, for example, the inflation source 10 is a compressor or an air pump.

[0022] First, the passage between the air storage box 12 and the extension tube 14 is closed by the switch valve 13, and then air is continuously supplied to the air storage box 12 through the inflation source to increase the air pressure inside the air storage box 12. After supplying air for a few seconds, the switch valve 13 is opened, and the high-pressure air flow inside the air storage box 12 instantly rushes to the extension tube 14, blowing the plastic in the extension tube 14 toward the filter barrel 8, causing the plastic to be dispersed in the crushing space 15.

[0023] As an embodiment, the switch valve 13 is an electromagnetic valve, which can quickly open and close the passage between the air storage tank 12 and the extension tube 14.

[0024] As an implementation method, refer to Figure 2 The switch valve 13 includes a shell 18, which has an air inlet end 21 connected to the air storage tank 12 on one side and an exhaust end 22 connected to the extension pipe 14 on the other side. A first sealing plate 19 and a second sealing plate 24 are provided in the shell 18. The first sealing plate 19 is tangent to the inner wall of the shell 18 where the air inlet end 21 is provided, and the second sealing plate 24 is sealed and fixed to the inner wall of the shell 18 where the exhaust end 22 is provided. The first sealing plate 19 and the second sealing plate 24 are arranged tangent to each other. The first sealing plate 19 is provided with evenly distributed first air holes 20, and the second sealing plate 24 is provided with evenly distributed second air holes 23. By pushing and pulling the first sealing plate 19, the first air holes 20 and the second air holes 23 can be connected or disconnected, and the first sealing plate 19 is connected to a push-pull power source.

[0025] The first sealing plate is a sliding plate. The first sealing plate 19 has a first air hole 20 corresponding to the second air hole 23. When the first air hole 20 and the second air hole 23 are completely misaligned, the air inlet end 21 and the exhaust end 22 are closed by the first sealing plate 19 and the second sealing plate 24. The first sealing plate 19 is pushed and pulled. When the first air hole 20 and the second air hole 23 are facing each other, the air inlet end 21 is connected to the exhaust end 22 through the first air hole 20 and the second air hole. The multi-porous connection method is adopted, which can achieve the instantaneous release of a large amount of airflow when the first sealing plate 19 has a small stroke.

[0026] The push-pull power source includes an electromagnetic push-pull assembly 16 fixed to the outside of the shell 18. The electromagnetic push-pull assembly can refer to the electromagnetic structure in the electromagnetic switch valve in the relevant technology. This technology is relatively mature and will not be described in detail. The electromagnetic push-pull assembly 16 includes a movable iron core, which is fixed to the first sealing plate 19 through a push-pull rod 17. Generally, when the electromagnet is energized, it can drive the movable iron core to pull the first sealing plate 19. After the power is off, the spring of the electromagnetic push-pull assembly 16 pushes the first sealing plate 19 to move in the opposite direction to close the second air hole 23.

[0027] refer to Figure 1 The extension tube 14 is a U-shaped tube with a large opening at one end and a small opening at the other end. The end with the large opening of the U-shaped tube is connected to the filter barrel 8, and the end with the small opening of the U-shaped tube is connected to the shell 18. The extension tube 14 is set in this way so that when the small end of the extension tube 14 is blown, the airflow can better push the plastic to the crushing space 15 to release it, thereby avoiding the problem of plastic blocking the extension tube 14 when the airflow impacts it.

[0028] As an embodiment, the air storage box 12 has a conical chamber, and the end with a smaller opening of the conical chamber is connected to the air inlet end 21 of the shell 18. The side of the air storage box 12 where air is discharged is a narrow opening, which plays a compression role when releasing the air flow, so that the air flow can be further compressed and released into the extension tube 14, thereby improving the impact effect.

[0029] The above is only a preferred specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any technical solution, conception, and design obtained by equivalent replacement or modification of the technical solution and utility model concept of the present invention by any technical personnel familiar with the technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A plastic crushing device, comprising a filter barrel (8), an outer cylinder (1) located outside the filter barrel (8), the filter barrel (8) having filter holes (9) on its circumference and a feed port (3) on its top that can be blocked by a cover (4), a vertically arranged rotating shaft (6) rotatably installed in the crushing space (15) inside the filter barrel (8), a crushing blade (7) being installed on the circumference of the rotating shaft (6), a motor (5) being connected to the top of the rotating shaft (6), a blanking space (2) with an open bottom is provided between the filter barrel (8) and the outer cylinder (1), characterized in that: The bottom of the filter barrel (8) is open, and an extension pipe (14) is connected and installed at the open bottom of the filter barrel (8), and an air storage component is connected and installed at one end of the extension pipe (14) away from the filter barrel (8), and the air storage component can blow air to the extension pipe (14) in a pulsed manner; The extension tube (14) is a U-shaped tube, one end of the U-shaped tube is widely open and the other end is narrowly open. The end of the U-shaped tube with a large opening is connected to the filter barrel (8), and the end of the U-shaped tube with a narrow opening is connected to the gas storage component.

2. A plastic crushing device according to claim 1, characterized in that: The gas storage assembly comprises an air storage box (12), a switch valve (13) is installed between the air storage box (12) and the extension pipe (14), the air storage box (12) is provided with an air inlet (11) installed with a one-way valve, and the air inlet (11) is connected to an air charging source (10).

3. A plastic crushing device according to claim 2, characterized in that: The switch valve (13) is an electromagnetic valve.

4. A plastic crushing device according to claim 2, characterized in that: The switch valve (13) includes a shell (18), one side of the shell (18) has an air inlet end (21) connected to the air storage box (12), and the other side has an exhaust end (22) connected to the extension pipe (14), a first sealing plate (19) and a second sealing plate (24) are provided in the shell (18), the first sealing plate (19) is tangent to the inner wall of the shell (18) where the air inlet end (21) is set, and the second sealing plate (24) is sealed and fixed to the inner wall of the shell (18) where the exhaust end (22) is set, the first sealing plate (19) and the second sealing plate (24) are tangent to each other, the first sealing plate (19) is provided with evenly distributed first air holes (20), and the second sealing plate (24) is provided with evenly distributed second air holes (23), and the first air holes (20) and the second air holes (23) can be connected or disconnected by pushing and pulling the first sealing plate (19), and the first sealing plate (19) is connected to a push-pull power source.

5. A plastic crushing device according to claim 4, characterized in that: The push-pull power source includes an electromagnetic push-pull assembly (16) fixed to the outside of the housing (18), and the electromagnetic push-pull assembly (16) includes a movable iron core, which is fixed to the first sealing plate (19) through a push-pull rod (17).

6. A plastic crushing device according to any one of claims 4-5, characterized in that: The end of the U-shaped tube with a smaller opening is connected to the shell (18).

7. A plastic crushing device according to claim 6, characterized in that: The air storage box (12) has a conical chamber, and the end of the conical chamber with a smaller opening is communicated with the air inlet end (21) of the housing (18).

8. A plastic crushing device according to any one of claims 2-5 and 7, characterized in that: The inflation source (10) is a compressor or an air pump.

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