A plastic bag recycling device

Abstract

The present invention belongs to the technical field of plastic bag recycling, and specifically relates to a plastic bag recycling device, which includes a machine body and a first cutting mechanism and a separation mechanism installed in the machine body. It further includes: a second conical plate rotatably installed on the machine body, and the second conical plate is installed above the first conical plate; a plurality of partitions annularly arranged on the second conical plate, and adjacent two partitions form a channel; an air inlet pipe rotatably installed on the second conical plate, and the air inlet pipe is fixedly connected to the machine body; a plurality of first air outlet holes opened on the lower surface of the second conical plate, and the first air outlet holes are communicated with the air inlet pipe; by setting the second conical plate, by blowing air into the air inlet pipe, the gas flows out from the first air outlet holes and diffuses downward in an umbrella shape. For some plastic bags wrapped with paper products, etc., the air flow can give it a downward pressure to increase the probability that the first cutter assembly cuts the plastic bags wrapping these garbage.

Description

Technical Field

[0001] The present invention belongs to the field of plastic bag recycling, and specifically relates to a plastic bag recycling device. Background Art

[0002] Currently, a lot of the garbage thrown into trash cans is wrapped in plastic bags. Due to the problem of difficult degradation of plastic bags, when dealing with the plastic bags of the screened wrapped garbage, it is necessary to use a plastic bag recycling device to first break the plastic bags so that the garbage flows out of the plastic bags, and then recycle and reuse the plastic bags to achieve the purpose of turning waste into treasure and reducing environmental pollution.

[0003] A patent application with the publication number CN114505980B discloses a plastic bag cleaning and recycling robot and a plastic bag separation method, including an outer cover, a transmission shaft installed on the outer cover; a centrifugal separation mechanism installed on the transmission shaft; a first bag-breaking mechanism and a second bag-breaking mechanism installed on the centrifugal separation mechanism; a material distribution hopper installed on the transmission shaft; the plastic bags are broken by the first bag-breaking mechanism and the second bag-breaking mechanism, and the plastic bags and garbage are separated by the centrifugal separation mechanism.

[0004] In the above solution, the plastic bag wrapped with garbage is put into the center of the first bag-breaking mechanism. There are spikes on the first bag-breaking mechanism. By rotating the first bag-breaking mechanism, the plastic bag wrapped with garbage rotates synchronously. Under the action of centrifugal force, the plastic bag wrapped with garbage moves towards the edge of the first bag-breaking mechanism. During the movement, the plastic bag wrapped with garbage contacts the spikes, realizing the bag-breaking action. However, for some plastic bags wrapped with paper products such as paper towels inside, the overall quality of the paper products and the plastic bags is relatively light, and the plastic bags are prone to fluttering, so they cannot contact the spikes well, and there is a possibility that the spikes cannot break the plastic bags.

[0005] Therefore, the present invention provides a plastic bag recycling device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A plastic bag recycling device according to the present invention includes a machine body and a first cutting mechanism and a separation mechanism installed in the machine body. The first cutting mechanism includes a first conical plate and a number of first cutter assemblies for cutting open plastic bags. The first cutter assemblies are annularly and arrayedly distributed on the first conical plate. The separation mechanism is used to separate plastic bags and the garbage inside the plastic bags. It further includes: a second conical plate rotatably installed on the machine body, and the second conical plate is installed above the first conical plate; a number of partitions annularly and arrayedly installed on the second conical plate, the partitions are fixedly connected to the first conical plate, and adjacent two partitions form a passage. A number of first cutter assemblies are evenly distributed on a number of the passages. The partitions are arranged parallel to the first cutter assemblies and are located on one side of the first cutter assemblies; an air inlet pipe rotatably installed on the second conical plate, and the air inlet pipe is fixedly connected to the machine body; a number of first air outlet holes opened on the lower surface of the second conical plate, the first air outlet holes are communicated with the air inlet pipe, the first air outlet holes are inclined, and the gas diffuses downward in an umbrella shape after coming out of the first air outlet holes.

[0008] Preferably, the first cutting mechanism further includes a number of installation grooves opened on the first conical plate. The first cutter assembly includes a round rod installed in the installation groove. A number of cutting knives are fixedly installed on the round rod, and the round rod is rotatably installed on the first conical plate.

[0009] Preferably, it further includes a second cutting mechanism installed in the machine body. The second cutting mechanism includes: an inverted conical plate fixedly installed in the machine body, the inverted conical plate is located below the first conical plate, and the diameter of the inverted conical plate is larger than the diameter of the first conical plate; a number of second cutter assemblies installed on the inverted conical plate, and the structure of the second cutter assembly is the same as the structure of the first cutter assembly; a material discharge port opened in the center of the inverted conical plate.

[0010] Preferably, the separation mechanism includes: a main shaft rotatably installed in the machine body, a spiral blade is arranged on the main shaft, and the rotating main shaft is used to stir the plastic bags and garbage coming out of the material discharge port; a material discharge pipe fixedly installed at the lower end of the machine body; an adsorption structure installed at the upper end of the material discharge pipe and below the inverted conical plate.

[0011] Preferably, the upper end of the main shaft is higher than the material discharge port of the inverted conical plate. A connecting plate is fixedly installed above the inverted conical plate, and a circle of annular blades is arranged on the lower surface of the connecting plate.

[0012] Preferably, the adsorption structure includes a plurality of long plates provided with adsorption holes. The plurality of long plates form a closed polygonal column, with the spiral blade located at the center of the polygonal column. A recovery space is formed between the outer periphery of the polygonal column and the inner wall of the machine body. The long plates are rotatably connected to the inverted conical plate and the feeding pipe.

[0013] Preferably, the separation mechanism further includes: an annular plate rotatably mounted on the machine body, with a first air suction hole formed on the upper surface of the annular plate. The annular plate is located outside and below the adsorption structure; an air outlet pipe rotatably mounted on the annular plate, communicating with the first air suction hole of the annular plate and fixedly connected to the machine body; two inclined plates fixedly mounted on the machine body, placed one above the other. The machine body is provided with a discharge port on the horizontal plane corresponding to the two inclined plates; a shutter slidably mounted on the machine body, located above the higher one of the two inclined plates; a connecting plate slidably mounted on the annular plate, located between the inclined plate and the annular plate.

[0014] Preferably, a plurality of vibrators are fixedly installed inside the annular plate.

[0015] Preferably, the separation mechanism further includes a second air outlet hole formed on the upper surface of the connecting plate.

[0016] Preferably, the first conical plate adopts a hollow structure, the main shaft adopts a hollow structure, and a plurality of connecting pipes are fixedly installed on the main shaft. The main shaft is communicated with the first conical plate through the connecting pipes.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. For the plastic bag recycling equipment of the present invention, by setting the second conical plate, blowing air into the air inlet pipe, the gas flows out from the first air outlet hole and diffuses downward in an umbrella shape. For plastic bags wrapped with paper products and the like, the air flow can give them a downward pressure to increase the probability of the first cutter assembly cutting the plastic bags wrapping these wastes. At the same time, the air flow diffuses outward, which can push the waste and plastic bags to move and reduce the probability of blockage in the channel. By setting a partition parallel to the first cutter assembly, it is ensured that the plastic bags can contact and generate relative sliding with the first cutter assembly during the movement in the channel. The separation mechanism can recycle the plastic bags, improving the recovery rate of plastic bags by the equipment.

[0019] 2. For a plastic bag recycling device according to the present invention, after the cutting knife cuts the plastic bag, there is a situation where the plastic bag is slightly damaged and adheres to the cutting surface of the cutting knife. After long-term work accumulation, a large amount of plastic bag fragments adhere to the cutting surface of the cutting knife, affecting the cutting ability of the cutting knife on the plastic bag. By setting a rotating round rod and arranging multiple groups of cutting knives on the round rod, after a large amount of plastic bag fragments adhere to the cutting knives, the round rod is controlled to rotate, the used cutting knives rotate into the installation groove, and the unused cutting knives are transferred above the installation groove to cut the plastic bag, reducing the number of times of stopping the machine to process the cutting knives, which is convenient to use. The first conical plate is of a hollow structure, and through the suction force, the cutting knives rotating into the first conical plate and the plastic fragments adhering thereto can be separated, further reducing the frequency of cleaning the cutting knives.

[0020] 3. For a plastic bag recycling device according to the present invention, currently, the method of hooking the plastic bag with a claw and rotating the claw and the plastic bag to throw out the garbage has the possibility that the plastic bag is torn and thrown out together with the garbage. Through the first crushing mechanism and the second crushing mechanism, the plastic bag is cut open so that the garbage in the plastic bag flows out. For the plastic bags and garbage that are scattered and in free fall, the plastic bags and garbage are separated by adsorption, and the separation effect is better. In cooperation with the rotating annular plate and the connecting plate, the paper products and plastic bags adsorbed together can be separated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 is a perspective view of Embodiment 1 of the present invention;

[0023] Figure 2 is a schematic diagram of the internal structure of the machine body of the present invention;

[0024] Figure 3 is a schematic diagram of the structures of the first conical plate and the second conical plate of the present invention;

[0025] Figure 4 is a schematic diagram of the structure of the inverted conical plate of the present invention;

[0026] Figure 5 is a schematic diagram of the structure of the main shaft of the present invention;

[0027] Figure 6 is a cross-sectional view of the annular plate and the connecting plate of the present invention;

[0028] Figure 7 is a schematic diagram of the mechanism of the first cutter assembly of the present invention;

[0029] In the figure: 1, body; 2, first cutting mechanism; 21, first conical plate; 22, first cutter assembly; 221, round rod; 222, cutting knife; 23, installation groove; 3, separation mechanism; 31, main shaft; 32, blanking pipe; 33, adsorption structure; 331, long plate; 332, adsorption hole; 34, annular plate; 35, air outlet pipe; 36, inclined plate; 37, discharge port; 38, shielding plate; 39, connecting plate; 4, second conical plate; 5, partition plate; 6, channel; 7, intake pipe; 8, first air outlet hole; 9, second cutting mechanism; 91, inverted conical plate; 92, second cutter assembly; 93, blanking opening; 10, connecting plate; 11, annular blade; 12, recovery space; 13, vibrator; 14, second air outlet hole; 15, connecting pipe. Specific embodiments

[0030] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0031] Example 1: As Figures 1 - 7 shown, a plastic bag recycling device according to an embodiment of the present invention includes a body 1 and a first cutting mechanism 2 and a separation mechanism 3 installed in the body 1. The first cutting mechanism 2 includes a first conical plate 21 and a plurality of first cutter assemblies 22 for cutting plastic bags. The first cutter assemblies 22 are annularly and arrayedly distributed on the first conical plate 21. The separation mechanism 3 is used to separate plastic bags and the garbage in the plastic bags, and further includes: a second conical plate 4 rotatably installed on the body 1, and the second conical plate 4 is installed above the first conical plate 21; a plurality of partition plates 5 annularly and arrayedly installed on the second conical plate 4, and the partition plates 5 are fixedly connected to the first conical plate 21. Adjacent two partition plates 5 form a channel 6, and a plurality of first cutter assemblies 22 are evenly distributed on a plurality of the channels 6. The partition plates 5 are arranged parallel to the first cutter assemblies 22 and are located on one side of the first cutter assemblies 22; an intake pipe 7 rotatably installed on the second conical plate 4, and the intake pipe 7 is fixedly connected to the body 1; a plurality of first air outlet holes 8 opened on the lower surface of the second conical plate 4, the first air outlet holes 8 are communicated with the intake pipe 7, and the first air outlet holes 8 are inclined. After the gas exits from the first air outlet holes 8, it diffuses downward in a umbrellalike shape.

[0032] Specifically, in the existing device, the plastic bag containing garbage is put into the center of the bag-breaking mechanism. There are spikes on the bag-breaking mechanism. By rotating the bag-breaking mechanism, the garbage wrapped in the plastic bag is driven to rotate synchronously. Under the action of centrifugal force, the garbage wrapped in the plastic bag moves towards the edge of the bag-breaking mechanism. During the movement, the garbage wrapped in the plastic bag comes into contact with the spikes, realizing the bag-breaking action. However, for some plastic bags containing paper products such as tissues, the overall quality of the paper products and the plastic bag is relatively light, and the plastic bag is prone to fluttering, so it cannot come into good contact with the spikes, and there is a possibility that the spikes cannot break the plastic bag; a feeding port is opened on the second conical plate 4. Before work, air is introduced into the air inlet pipe 7. During work, the second conical plate 4 is controlled to rotate counterclockwise (viewed from top to bottom). The second conical plate 4 drives the first conical plate 21 to rotate synchronously through the partition plate 5. The garbage is put in from the feeding port of the second conical plate 4, and the plastic bag containing the garbage falls onto the first conical plate 21. The plastic bag containing the garbage randomly enters one of the channels 6. Since the first conical plate 21 rotates, the centrifugal force generated can drive the plastic bag containing the garbage to move towards the edge of the first conical plate 21. At the same time, the partition plate 5 pushes the plastic bag containing the garbage to rotate synchronously. Therefore, the plastic bag containing the garbage slides along the side wall of the partition plate 5 towards the edge of the first conical plate 21. Since a first cutting knife assembly 22 parallel to the partition plate 5 is arranged in the channel 6, the plastic bag can be cut, so that the garbage in the plastic bag flows out. Subsequently, the plastic bag and the garbage fall together on the outer periphery of the first conical plate 21 and pass through the separation mechanism 3. The separation mechanism 3 separates the plastic bag and the garbage. The garbage is discharged from the machine body 1, and the plastic bag remains in the machine body 1 for recycling; by setting the second conical plate 4 and blowing air into the air inlet pipe 7, the gas flows out from the first air outlet hole 8 and diffuses downward in an umbrella shape. For some plastic bags containing paper products, the air flow can give it a downward pressure to increase the probability of the first cutting knife assembly 22 cutting the plastic bag containing these garbage. At the same time, the air flow diffuses outward, which can push the movement of the garbage and the plastic bag and reduce the probability of its blockage in the channel 6. By setting the partition plate 5 parallel to the first cutting knife assembly 22, it is ensured that the plastic bag can come into contact with the first cutting knife assembly 22 and generate relative sliding during the movement in the channel 6. The separation mechanism 3 can recycle the plastic bag, improving the recovery rate of the plastic bag by the equipment.

[0033] As Figure 4 and Figure 7 shown, the first cutting mechanism 2 further includes a plurality of installation grooves 23 opened on the first conical plate 21. The first cutting knife assembly 22 includes a round rod 221 installed in the installation groove 23. A plurality of cutting knives 222 are fixedly installed on the round rod 221. The round rod 221 is rotatably installed on the first conical plate 21.

[0034] Specifically, after the cutting knife 222 cuts the plastic bag, there is a situation where the plastic bag is slightly damaged and adheres to the cutting surface of the cutting knife 222. After a long period of work accumulation, a large number of plastic bag fragments adhere to the cutting surface of the cutting knife 222, affecting the cutting ability of the cutting knife 222 for plastic bags. It is necessary to stop the machine to process the cutting knife 222. Multiple groups of cutting knives 222 are arranged on the round rod 221. During operation, only one cutting knife 222 is outside the installation groove 23, that is, this cutting knife 222 can contact the plastic bag. After a large number of plastic bag fragments adhere to this cutting knife 222, control the round rod 221 to rotate, so that the used cutting knife 222 rotates into the installation groove 23, and the unused cutting knife 222 is transferred above the installation groove 23 to cut the plastic bag, reducing the number of times of stopping the machine to process the cutting knife 222, which is convenient to use.

[0035] As Figure 3 and Figure 4 As shown in the figure, it further includes a second cutting mechanism 9 installed in the machine body 1. The second cutting mechanism 9 includes: an inverted cone plate 91 fixedly installed in the machine body 1. The inverted cone plate 91 is located below the first conical plate 21, and the diameter of the inverted cone plate 91 is larger than the diameter of the first conical plate 21; several second cutting knife assemblies 92 installed on the inverted cone plate 91. The structure of the second cutting knife assembly 92 is the same as the structure of the first cutting knife assembly 22; a material discharge port 93 opened in the center of the inverted cone plate 91.

[0036] Specifically, the plastic bag and the garbage fall from the outer periphery of the first conical plate 21 onto the inverted cone plate 91 and slide down under the action of gravity. During the sliding process, they can contact the second cutting knife assembly 92. The second cutting knife assembly 92 can cut the plastic bag that has not been cut open. After sliding down, the garbage and the plastic bag pass through the material discharge port 93, and the garbage and the plastic bag passing through the material discharge port 93 are separated by the separation mechanism 3. By setting the second cutting mechanism 9, the plastic bag that has not been cut open can be cut to improve the cutting probability of the plastic bag.

[0037] As Figure 5 and Figure 6 As shown in the figure, the separation mechanism 3 includes: a main shaft 31 rotatably installed in the machine body 1. A spiral blade is arranged on the main shaft 31. The rotating main shaft 31 is used to stir the plastic bag and the garbage coming out of the material discharge port 93; a material discharge pipe 32 fixedly installed at the lower end of the machine body 1; an adsorption structure 33 installed at the upper end of the material discharge pipe 32 and below the inverted cone plate 91.

[0038] Specifically, during operation, the main shaft 31 is controlled to rotate. The plastic bags and garbage falling from the blanking port 93 are scattered by the spiral blades on the main shaft 31, causing the garbage and plastic bags to spread out in all directions. The plastic bags are adsorbed by the adsorption structure 33, while the garbage falls onto the blanking pipe 32 under the action of gravity and is discharged from the machine body 1 through the blanking pipe 32.

[0039] As shown in the figure, the upper end of the main shaft 31 is higher than the blanking port 93 of the inverted cone plate 91. A connecting plate 3910 is fixedly installed above the inverted cone plate 91, and a circular blade 11 is arranged on the lower surface of the connecting plate 3910.

[0040] Specifically, the spiral blade of the main shaft 31 at the blanking port 93 is in contact with the blanking port 93 and can transport plastic bags and garbage downward. After the garbage and plastic bags are transported to below the blanking port 93, the outside of the garbage and plastic bags is not blocked. Therefore, under the action of the centrifugal force of rotation, the garbage and plastic bags can spread outwards. By arranging the circular blade 11 below the connecting plate 3910, for some plastic bags that wrap the garbage and are not cut, their volume is relatively large and they can be stuck between the circular blade 11 and the inverted cone plate 91. Since the connecting plate 3910 and the circular blade 11 rotate with the main shaft 31, the rotating circular blade 11 can cut the plastic bags that wrap the garbage, further increasing the probability of cutting the plastic bags.

[0041] As Figures 3 - 5 shown, the adsorption structure 33 includes a number of long plates 331. Adsorption holes 332 are arranged on the long plates 331. The number of long plates 331 form a closed polygonal column. The spiral blade is located in the center of the polygonal column, and a recovery space 12 is formed between the periphery of the polygonal column and the inner wall of the machine body 1. The long plates 331 are rotatably connected to the inverted cone plate 91 and the blanking pipe 32.

[0042] Specifically, a suction pump can be arranged outside the machine body 1. During operation, the long plates 331 are connected to the suction pump. After the suction pump is started, a suction force can be generated at the adsorption holes 332. After the plastic bags and garbage pass through the blanking port 93, the long plates 331 adsorb the plastic bags through the suction force at the adsorption holes 332. The garbage falls onto the blanking pipe 32 under the action of gravity and is discharged from the machine body 1 through the blanking pipe 32. After a large number of plastic bags are adsorbed on the long plates 331, the long plates 331 are controlled to rotate so that the side with the adsorption holes 332 and the plastic bags faces the recovery space 12. Then, the suction pump is controlled to stop working so that there is no suction force at the adsorption holes 332. The plastic bags fall into the recovery space 12 under the action of gravity. Then, the long plates 331 are controlled to rotate back, and so on, continuously separating and recycling the garbage and plastic bags.

[0043] As Figure 1 、 Figure 3 andFigure 6 As shown, the separation mechanism 3 further includes: an annular plate 34 rotatably mounted on the body 1, the upper surface of the annular plate 34 is provided with a first suction hole, and the annular plate 34 is located outside and below the adsorption structure 33; an air outlet pipe 35 rotatably mounted on the annular plate 34, the air outlet pipe 35 is communicated with the first suction hole of the annular plate 34, and the air outlet pipe 35 is fixedly connected to the body 1; two inclined plates 36 fixedly mounted on the body 1, the two inclined plates 36 are placed one above the other, and the body 1 is provided with a discharge port 37 on the horizontal plane corresponding to the two inclined plates 36; a shielding plate 38 slidably mounted on the body 1, and the shielding plate 38 is located above the higher one of the two inclined plates 36; a connecting plate 39 slidably mounted on the annular plate 34, and the connecting plate 39 is located between the inclined plate 36 and the annular plate 34.

[0044] Specifically, since there is a situation where paper products are wrapped in plastic bags, not only plastic bags but also paper products will be adsorbed on the long plate 331. Under the action of gravity, the shielding plate 38 can block the space between the body 1 and the upper inclined plate 36. After the connecting plate 39 moves upward, it can push the shielding plate 38 to move synchronously, so that the space between the inclined plate 36 and the body 1 is communicated with the recycling space 12. In the initial state, the connecting plate 39 and the lower inclined plate 36 are on the same horizontal plane. Before work, connect the air outlet pipe 35 to another suction pump. After the suction holes 332 on the long plate 331 turn to the recycling space 12, control the suction pump to start, so that a suction force is generated at the first suction hole, control the suction pump connected to the long plate 331 to stop working, and at the same time control the annular plate 34 to rotate, so that the garbage on the long plate 331 evenly falls on the annular plate 34 and is sucked by the first suction holes on the annular plate 34. Subsequently, control the annular plate 34 to rotate rapidly. Since the size of the plastic bag is larger than that of the used paper products, after the plastic bag falls on the annular plate 34, more first suction holes adsorb the plastic bag, so the plastic bag is adsorbed more firmly by the annular plate 34. The centrifugal force generated by the high-speed rotation of the annular plate 34 throws the adsorbed paper products on it onto the connecting plate 39. Since the connecting plate 39 is driven by the annular plate 34 to rotate, the paper products are thrown from the connecting plate 39 onto the lower inclined plate 36 and discharged through the inclined plate 36 from the discharge port 37. After the paper products are separated, control the connecting plate 39 to move upward until it is on the same horizontal plane as the upper connecting plate 39. Subsequently, control the suction pump connected to the air outlet pipe 35 to stop working, so that the plastic bag moves onto the connecting plate 39 under the action of centrifugal force and slides from the connecting plate 39 onto the upper inclined plate 36, and then is discharged from the discharge port 37 on one side of the inclined plate 36.

[0045] As Figure 6 shown, a plurality of vibrators 13 are fixedly installed inside the annular plate 34.

[0046] Specifically, after the plastic bags and paper products fall from the long board 331 onto the annular plate 34, the vibrator 13 is controlled to start, vibrating the upper surface of the annular plate 34 to further evenly distribute the plastic bags and paper products on the surface of the annular plate 34, and at the same time, the plastic bags can also be unfolded.

[0047] As Figure 4 and Figure 6 shown, the separation mechanism 3 further includes a second air outlet hole 14 opened on the upper surface of the receiving plate 39.

[0048] Specifically, a first cutting mechanism 2 and a second cutting mechanism 9 are arranged in the machine body 1. Therefore, during the process of cutting the plastic bags, it is possible that the plastic bags are divided into small pieces. For some plastic bags with smaller sizes, they will move together with the paper products. By providing the second air outlet hole 14 on the receiving plate 39 and blowing air into the receiving plate 39, the gas blows upward from the second air outlet hole 14. Since plastic bags of the same size are lighter than the paper products, the gas blown out by the second air outlet hole 14 can blow the small-sized plastic bags to float in the recycling space 12, and the paper products will fall on the receiving plate 39 and move from the receiving plate 39 to the inclined plate 36, so as to separate the small-sized plastic bags from the paper products and make the recovery rate of the device higher.

[0049] As Figure 4 and Figure 6 shown, the first conical plate 21 adopts a hollow structure, the main shaft 31 adopts a hollow structure, and a plurality of connecting pipes 15 are fixedly installed on the main shaft 31. The main shaft 31 is communicated with the first conical plate 21 through the connecting pipes 15.

[0050] Specifically, before working, the main shaft 31 is connected to an air extraction device, and the air extraction device sucks the main shaft 31. Through the connection of the connecting pipes 15, a suction force is generated inside the first conical plate 21. When the used cutting knife 222 is transferred into the inside of the first conical plate 21, the cutting knife 222 and the plastic fragments adhering to it can be separated by the suction force, so as to extend the service time of the first cutting knife assembly 22.

[0051] Working principle: Before working, air is introduced into the intake pipe 7. When working, the second conical plate 4 is controlled to rotate counterclockwise (viewed from top to bottom). The second conical plate 4 drives the first conical plate 21 to rotate synchronously through the partition plate 5. Garbage is put in from the feeding port of the second conical plate 4, and the plastic bag wrapping the garbage drops onto the first conical plate 21. The plastic bag wrapping the garbage randomly enters a channel 6. Due to the rotation of the first conical plate 21, the centrifugal force generated can drive the plastic bag wrapping the garbage to move towards the edge of the first conical plate 21. While moving, the partition plate 5 pushes the plastic bag wrapping the garbage to rotate synchronously. Therefore, the plastic bag wrapping the garbage slides along the side wall of the partition plate 5 towards the edge of the first conical plate 21. Since a first cutter assembly 22 parallel to the partition plate 5 is arranged in the channel 6, the plastic bag can be cut, so that the garbage in the plastic bag flows out. Subsequently, the plastic bag and the garbage together fall outside the first conical plate 21 onto the inverted conical plate 91 and slide down under the action of gravity. During the sliding process, they can contact the second cutter assembly 92, and the second cutter assembly 92 can cut the plastic bag that has not been cut. After sliding down, the garbage and the plastic bag move to the discharge opening 93. Since the spiral blade of the main shaft 31 at the discharge opening 93 fits with the discharge opening 93, the plastic bag and the garbage can be transported downward. After the garbage and the plastic bag are transported below the discharge opening 93, the outside of the garbage and the plastic bag is not blocked. Therefore, under the action of the rotational centrifugal force, the garbage and the plastic bag can spread outwards. When working, the long plate 331 is connected to the suction pump. After the suction pump is started, a suction force can be generated at the suction holes 332. After the plastic bag and the garbage pass through the discharge opening 93, the long plate 331 adsorbs the plastic bag through the suction force at the suction holes 332, and the garbage drops onto the discharge pipe 32 under the action of gravity and is discharged from the machine body 1 through the discharge pipe 32. After a large number of plastic bags are adsorbed on the long plate 331, the long plate 331 is controlled to rotate so that the side with the suction holes 332 and the plastic bag faces the recycling space 12. Subsequently, the suction pump is controlled to stop working so that there is no suction force at the suction holes 332. The plastic bag drops into the recycling space 12 under the action of gravity. Subsequently, the long plate 331 is controlled to rotate back, and this cycle is repeated to continuously separate and recycle the garbage and the plastic bag.

[0052] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A plastic bag recycling device, comprising a machine body (1), a first cutting mechanism (2) and a separation mechanism (3) installed in the machine body (1). The first cutting mechanism (2) includes a first conical plate (21) and a plurality of first cutting tool assemblies (22) for cutting plastic bags. The first cutting tool assemblies (22) are annularly and arrayedly distributed on the first conical plate (21). The separation mechanism (3) is used to separate plastic bags from the garbage in the plastic bags, and is characterized in that, It further includes: A second conical plate (4) rotatably mounted on the body (1), and the second conical plate (4) is mounted above the first conical plate (21); A plurality of partitions (5) annularly arrayed and mounted on the second conical plate (4), the partitions (5) are fixedly connected to the first conical plate (21), and adjacent two partitions (5) form a channel (6). A plurality of first cutting blade assemblies (22) are evenly distributed on a plurality of the channels (6). The partitions (5) are arranged parallel to the first cutting blade assemblies (22) and are located on one side of the first cutting blade assemblies (22); An air inlet pipe (7) rotatably mounted on the second conical plate (4), and the air inlet pipe (7) is fixedly connected to the body (1); A plurality of first air outlet holes (8) opened on the lower surface of the second conical plate (4), the first air outlet holes (8) are communicated with the air inlet pipe (7), the first air outlet holes (8) are inclined, and the gas diffuses downward in an umbrella shape after exiting from the first air outlet holes (8); It further includes a second cutting mechanism (9) installed in the body (1), and the second cutting mechanism (9) includes: An inverted conical plate (91) fixedly installed in the body (1), the inverted conical plate (91) is located below the first conical plate (21), and the diameter of the inverted conical plate (91) is larger than the diameter of the first conical plate (21); A plurality of second cutting blade assemblies (92) installed on the inverted conical plate (91), and the structure of the second cutting blade assemblies (92) is the same as the structure of the first cutting blade assemblies (22); A material discharge port (93) opened in the center of the inverted conical plate (91); The separation mechanism (3) includes: A main shaft (31) rotatably mounted in the body (1), a spiral blade is provided on the main shaft (31), and the rotating main shaft (31) is used for stirring the plastic bags and garbage coming out of the material discharge port (93); A material discharge pipe (32) fixedly installed at the lower end of the body (1); An adsorption structure (33) installed at the upper end of the material discharge pipe (32) and below the inverted conical plate (91); The adsorption structure (33) includes a plurality of long plates (331), adsorption holes (332) are provided on the long plates (331), and a plurality of the long plates (331) form a closed polygonal columnar body. The spiral blade is located in the center of the polygonal columnar body, and a recovery space (12) is formed between the periphery of the polygonal columnar body and the inner wall of the body (1). The long plates (331) are rotatably connected to the inverted conical plate (91) and the material discharge pipe (32); The separation mechanism (3) further includes: An annular plate (34) rotatably mounted on the body (1), a first air suction hole is opened on the upper surface of the annular plate (34), and the annular plate (34) is located outside and below the adsorption structure (33); An air outlet pipe (35) rotatably mounted on the annular plate (34), the air outlet pipe (35) is communicated with the first air suction hole of the annular plate (34), and the air outlet pipe (35) is fixedly connected to the body (1); Two inclined plates (36) fixedly mounted on the body (1), the two inclined plates (36) are placed one above the other, and the body (1) is provided with a discharge port (37) on the horizontal plane corresponding to the two inclined plates (36); A shutter (38) slidably mounted on the body (1), the shutter (38) is located above the higher-positioned inclined plate (36); A connecting plate (39) slidably mounted on the annular plate (34), the connecting plate (39) is located between the inclined plate (36) and the annular plate (34).

2. The plastic bag recycling device according to claim 1, characterized in that: The first cutting mechanism (2) further includes a plurality of mounting grooves (23) opened on the first conical plate (21), the first cutter assembly (22) includes a round rod (221) mounted on the mounting groove (23), a plurality of cutting knives (222) are fixedly mounted on the round rod (221), and the round rod (221) is rotatably mounted on the first conical plate (21).

3. The plastic bag recycling device according to claim 2, wherein: The upper end of the main shaft (31) is higher than the material discharge port (93) of the inverted conical plate (91), a connecting plate (10) is fixedly mounted above the inverted conical plate (91), and a ring of annular blades (11) is provided on the lower surface of the connecting plate (10).

4. The plastic bag recycling device according to claim 3, characterized in that: A plurality of vibrators (13) are fixedly mounted inside the annular plate (34).

5. A plastic bag recycling device according to claim 4, characterized in that: The separation mechanism (3) further includes a second air outlet hole (14) opened on the upper surface of the connecting plate (39).

6. The plastic bag recycling device according to claim 5, wherein: The first conical plate (21) adopts a hollow structure, the main shaft (31) adopts a hollow structure, a plurality of connecting pipes (15) are fixedly mounted on the main shaft (31), and the main shaft (31) is communicated with the first conical plate (21) through the connecting pipes (15).

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