Plastic particle airflow separation device and separation method
By designing the particle positioning mechanism and spray hopper of the plastic particle airflow separation device, automatic separation of particles with low density and high density is achieved, solving the problem of insufficient separation in the existing technology and improving separation efficiency and equipment adaptability.
Patent Information
- Application Number
- CN202511264446.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-05
- Publication Date
- 2025-12-05
AI Technical Summary
In existing airflow separation technologies, low-density plastic particles are easily mixed with high-density particles, resulting in incomplete separation.
The plastic granule airflow separation device uses a granule positioning mechanism to guide the granules into a row and uses high-pressure airflow to impart kinetic energy, so that the granules receive kinetic energy differences on the same starting line. The automatic separation of granules is achieved by using the tilt angle of the spray hopper and the linear distribution of the collection box.
It improves the separation efficiency and recycling rate of plastic granules, reduces the need for manual adjustments, and increases production efficiency and equipment adaptability.
Smart Images
Figure CN121062067A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of separation devices, in particular to a plastic particle air flow separation device and a separation method. BACKGROUND
[0002] With the continuous growth of the global economy, the plastic industry, as an important part of modern industry, has developed rapidly. Plastic products are widely used in various fields, from daily necessities to high-end industrial products, and are ubiquitous. However, the large-scale use of plastic products has also brought serious environmental problems, and the disposal of waste plastics has become a difficult problem to be solved. Among the many plastic particle separation technologies, air flow separation technology is attracting attention due to its unique advantages. This technology uses the force of air flow to separate particles according to their physical properties (such as particle size, density, etc.). Compared with other separation methods, air flow separation technology has the characteristics of simple operation, high separation efficiency, and little environmental pollution, and has broad application prospects in the field of plastic particle treatment.
[0003] In the prior art, plastic particles of multiple materials and similar sizes are mixed with high-pressure air flow. After the particles are given kinetic energy by the air flow, they fall to different points due to their different initial kinetic energies and different weights, thereby achieving separation of the plastic particles. However, when a large number of chaotic particles are mixed with high-pressure air flow and thrown far away, some particles with small density are still mixed with particles with large density when collecting the particles. SUMMARY
[0004] The present application is based on multiple practical researches and finds that when particles of multiple materials are mixed with air flow, they do not start from the same line. Even particles with the same weight, when a large number of particles are mixed with air flow, particles close to the air supply device (air port) have more kinetic energy than particles farther away. Therefore, when some particles with small density are far away from the air port, they do not have enough kinetic energy to fall to the designated location, and thus are mixed with particles with large density. In order to solve the shortcomings of the prior art, a plastic particle air flow separation device and a separation method are proposed.
[0005] In order to achieve the above purpose, the present application adopts the following technical solutions: The plastic particle air flow separation device comprises a device box body, a feed hopper fixedly installed on the top of the device box body, and a blower inside the device box body. A particle positioning mechanism for restraining plastic particles to form a row and simultaneously withstand air force is arranged below the feed hopper. The particle positioning mechanism comprises: A fourth plate body is arranged below the feed hopper in an L-shaped structure, the top of the fourth plate body abuts against one side edge of the bottom of the feed hopper, and the fourth plate body is fixedly installed on the inner wall of the device box body. The first plate body is coupled with the fourth plate body and is arranged obliquely on one side of the fourth plate body to guide the plastic particles to gather; The second plate body and the third plate body are arranged vertically and form a material falling channel therebetween, the first plate body is coupled with the third plate body, the third plate body is slidingly mounted on the surface of the fourth plate body, the distance between the material falling channel can be set according to the volume of the plastic particles, the top of the second plate body abuts against the other side edge of the bottom of the feeding funnel to further guide the plastic particles into the material falling channel and linearly distribute in the direction perpendicular to the wind direction.
[0006] Preferably, the second plate body is provided with a second notch at the bottom, the second notch and the fourth plate body form a discharging port, the discharging port is provided with a material spraying hopper in a funnel structure, the material spraying hopper is inclined at a set angle between the discharging end and the wind direction, and the third plate body is provided with a plurality of air blowing holes close to the bottom surface.
[0007] Preferably, the fourth plate body is provided with a plurality of second through holes on the surface, the air blower is fixedly mounted on one side in the equipment box, the air outlet end of the air blower is fixedly mounted with an air pipe, the air pipe is provided with an air inlet and a plurality of air outlets, the air inlet is connected with the air blower, and the plurality of air outlets are connected with the plurality of second through holes.
[0008] Preferably, one side of the equipment box is in an open structure, a plurality of collecting boxes are slidingly mounted in the equipment box, the top of each of the collecting boxes is in an open structure, and the plurality of collecting boxes are linearly distributed in the direction of the wind direction.
[0009] Preferably, the fourth plate body is provided with a lug at the top, the lug is provided with an inclined surface and a second groove, the first plate body comprises a shaft body and a material guide plate, the shaft body is drivingly rotatably mounted in the second groove, the material guide plate is fixedly connected with the shaft body, the surface of the material guide plate is provided with a baffle, and the bottom end of the baffle is provided with a protruding shaft on the outer surface of each of the two opposite sides.
[0010] Preferably, the top of the third plate body is provided with a first notch, the first notch is provided with a first groove on each of the two opposite sides, the first plate body is coupled in the first groove through the protruding shaft, and a telescopic sealing curtain is connected between the bottom end of the first plate body and the third plate body.
[0011] Preferably, a telescopic sealing curtain is also connected between the third plate body and the fourth plate body.
[0012] Preferably, the material spraying hopper comprises a top plate, two side plates and a bottom plate, the top plate and the bottom plate are fixedly connected through the two side plates and surround a funnel structure, the bottom plate is in an arc structure, the top plate is rotatably mounted in the second notch, the surface of the fourth plate body is provided with a third groove consistent with the arc of the bottom plate, and the bottom plate always abuts against the third groove.
[0013] Preferably, a plurality of elastic members are connected between the top plate and the second plate body, at least one first through hole is formed on the surface of the second plate body, at least one roller is rotatably installed on the surface of the second plate body, at least one rope is fixedly installed on the top of the material spraying hopper, the other end of the rope is fixedly connected with the third plate body through the roller and the first through hole, and a servo motor is fixedly installed on the outside of the equipment box, and the output end of the servo motor is fixedly connected with the rotating center of the shaft body through the equipment box.
[0014] The separation method of the plastic particle airflow separation device comprises the following steps: Step one: pre-adjust the plastic particle airflow separation device, drive the shaft body of the first plate body to rotate through the servo motor according to the volume of the plastic particles to be separated (a plurality of plastic particles of different materials in the same screening grade are mixed), then drive the third plate body to slide on the surface of the fourth plate body, adjust the distance between the third plate body and the second plate body (the width of the material falling channel), and simultaneously adjust the inclination angle of the bottom plate of the material spraying hopper through the rope; Step two: start the air blower, and the airflow passes through the air pipe, the second through hole and the air blowing hole to vertically pass through the material falling channel to form a vertical air curtain; Step three: add the mixed plastic particles of different materials from the feeding funnel into the equipment box, guide the particles to enter the material falling channel in a row through the top inclined surface of the fourth plate body, the first plate body and the second plate body, then apply a driving force to the row of plastic particles through the vertical air curtain to obtain kinetic energy; Step four: under the condition that the air force is consistent, the particles in the same row are automatically separated after entering the material spraying hopper, and fall into the corresponding collection box according to their respective mass differences (the light particles are blown to the far side of the material spraying hopper, and the heavy particles are blown to the near side of the material spraying hopper).
[0015] By arranging the particle positioning mechanism, the plastic particles entering the equipment can be guided and constrained to form a row before being contacted with the high-pressure airflow, so that all the particles receive kinetic energy in the same starting line, thereby avoiding that the light particles cannot fly to the predetermined position due to insufficient kinetic energy at a position far from the air port, and mixing with the heavy particles, and improving the completeness of the plastic particle separation of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 The structure diagram of the plastic particle airflow separation device is provided for the present application; Figure 2 The equipment box cross-sectional structure diagram of the plastic particle airflow separation device is provided for the present application; Figure 3 The cross-sectional structure diagram of the plastic particle airflow separation device is provided for the present application; Figure 4 The cross-sectional structure diagram of the plastic particle airflow separation device is provided for the present application; Figure 3 The enlarged structure diagram of the middle A part is provided for the present application; Figure 5 The first plate body and the third plate body structure schematic diagram of the plastic particle air flow separation device proposed in the present application; Figure 6 The fourth plate body structure schematic diagram of the plastic particle air flow separation device proposed in the present application; Figure 7 The second plate body structure schematic diagram of the plastic particle air flow separation device proposed in the present application; Figure 8 The material spraying hopper structure schematic diagram of the plastic particle air flow separation device proposed in the present application; Figure 9 The material falling channel adjustment schematic diagram of the plastic particle air flow separation device proposed in the present application; Figure 10 The Figure 9 The enlarged structure schematic diagram of the middle B part.
[0017] In the figure: 100, the equipment box; 110, the feeding funnel; 120, the convex strip; 200, the air blower; 300, the collection box; 400, the particle positioning mechanism; 410, the first plate body; 411, the shaft body; 412, the material guide plate; 413, the baffle; 414, the convex shaft; 420, the second plate body; 421, the second gap; 422, the first through hole; 430, the third plate body; 431, the first gap; 432, the first groove; 433, the air blowing hole; 440, the fourth plate body; 441, the second through hole; 442, the convex block; 4421, the inclined surface; 4422, the second groove; 443, the third groove; 450, the telescopic sealing curtain; 460, the material spraying hopper; 461, the top plate; 462, the side plate; 463, the bottom plate; 470, the rope; 480, the elastic member; 490, the roller; 500, the air pipe; 600, the servo motor. DETAILED DESCRIPTION
[0018] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the present application will be further described below with reference to the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0019] With reference to Figure 2 , the separation method of the plastic particle air flow separation device, the following steps are adopted: Firstly, the plastic particle airflow separation device is pre-adjusted. According to the volume of the plastic particles to be separated (a mixture of plastic particles of multiple materials under the same screening grade), the shaft body 411 of the first plate body 410 is driven to rotate by the servo motor 600, thereby driving the third plate body 430 to slide on the surface of the fourth plate body 440, adjusting the distance between the third plate body 430 and the second plate body 420 (the width of the material falling channel), and simultaneously adjusting the inclination angle of the bottom plate 463 of the material blowing hopper 460 through the rope 470. Next, start the air blower 200, and the airflow vertically passes through the material falling channel through the air pipe 500→the second through hole 441→the air blowing hole 433, forming a vertical air curtain. Then, the mixed plastic particles of multiple materials are added from the feeding hopper 110 into the equipment box 100, the particles are guided to be evenly arranged in a row into the material falling channel through the top inclined surface 4421 of the fourth plate body 440, the first plate body 410 and the second plate body 420, and then the vertical air curtain applies a driving force to the row of plastic particles to obtain kinetic energy. Finally, under the condition of consistent wind force, the particles in the same row are automatically separated after entering the material blowing hopper 460, and fall into the corresponding collection box 300 according to their respective mass differences (light particles are blown to the far side of the material blowing hopper, and heavy particles are blown to the near side of the material blowing hopper).
[0020] As shown in Figure 1 , the plastic particle airflow separation device comprises an equipment box 100, a feeding hopper 110 fixedly installed on the top of the equipment box 100, and an air blower 200 in the equipment box 100. A particle positioning mechanism 400 for restraining plastic particles to be in a row and subjected to wind force is arranged below the feeding hopper 110. By arranging the particle positioning mechanism 400, the plastic particles entering the equipment can be guided and restrained to be in a row and then contacted with high-pressure airflow, so that all particles will receive kinetic energy in the same starting line, avoiding that light particles cannot fly to the predetermined position due to insufficient kinetic energy far from the air port, and then mixed with heavier particles, thereby improving the completeness of the equipment in separating plastic particles. In a specific embodiment, as shown in Figure 3 and Figure 4 , the particle positioning mechanism 400 comprises a first plate body 410, a second plate body 420, a third plate body 430 and a fourth plate body 440. The fourth plate body 440 is arranged below the feeding hopper 110 in an L-shaped structure, the top of the fourth plate body 440 is in abutment with one side edge of the bottom of the feeding hopper 110, and is fixedly installed with the inner wall of the equipment box 100. The third plate body 430 is installed on the surface of the fourth plate body 440 (see Figure 4 ). The top of the second plate body 420 is in abutment with the other side edge of the bottom of the feeding hopper 110. The second plate body 420 and the third plate body 430 are vertically arranged and form a material falling channel therebetween. The distance between the material falling channel can be set according to the volume of the plastic particles.
[0021] In order to enable the particles to enter the material falling channel accurately and orderly, the first plate body 410 is coupled to the third plate body 430 and the fourth plate body 440, and is arranged obliquely between the fourth plate body 440 and the second plate body 420, and the bottom of the first plate body 410 is connected to the third plate body 430. The particles entering the device can be guided and collected through the first plate body 410, the second plate body 420 and the third plate body 430, and are linearly distributed in the material falling channel perpendicular to the wind direction, so as to facilitate full contact with the high-pressure airflow, and then simultaneously act on the particles to make them fly together with the airflow to a far place. Figure 3 Figure 4 In order to enable the particles to enter the material falling channel accurately and orderly, the first plate body 410 is coupled to the third plate body 430 and the fourth plate body 440, and is arranged obliquely between the fourth plate body 440 and the second plate body 420, and the bottom of the first plate body 410 is connected to the third plate body 430. The particles entering the device can be guided and collected through the first plate body 410, the second plate body 420 and the third plate body 430, and are linearly distributed in the material falling channel perpendicular to the wind direction, so as to facilitate full contact with the high-pressure airflow, and then simultaneously act on the particles to make them fly together with the airflow to a far place.
[0022] In order to enable the particles to enter the material falling channel accurately and orderly, the first plate body 410 is coupled to the third plate body 430 and the fourth plate body 440, and is arranged obliquely between the fourth plate body 440 and the second plate body 420, and the bottom of the first plate body 410 is connected to the third plate body 430. The particles entering the device can be guided and collected through the first plate body 410, the second plate body 420 and the third plate body 430, and are linearly distributed in the material falling channel perpendicular to the wind direction, so as to facilitate full contact with the high-pressure airflow, and then simultaneously act on the particles to make them fly together with the airflow to a far place.
[0022] Figure 7 In order to enable the particles to enter the material falling channel accurately and orderly, the first plate body 410 is coupled to the third plate body 430 and the fourth plate body 440, and is arranged obliquely between the fourth plate body 440 and the second plate body 420, and the bottom of the first plate body 410 is connected to the third plate body 430. The particles entering the device can be guided and collected through the first plate body 410, the second plate body 420 and the third plate body 430, and are linearly distributed in the material falling channel perpendicular to the wind direction, so as to facilitate full contact with the high-pressure airflow, and then simultaneously act on the particles to make them fly together with the airflow to a far place. Figure 7 Figure 4 In order to enable the particles to enter the material falling channel accurately and orderly, the first plate body 410 is coupled to the third plate body 430 and the fourth plate body 440, and is arranged obliquely between the fourth plate body 440 and the second plate body 420, and the bottom of the first plate body 410 is connected to the third plate body 430. The particles entering the device can be guided and collected through the first plate body 410, the second plate body 420 and the third plate body 430, and are linearly distributed in the material falling channel perpendicular to the wind direction, so as to facilitate full contact with the high-pressure airflow, and then simultaneously act on the particles to make them fly together with the airflow to a far place. Figure 4
[0023] In order to enable the particles to enter the material falling channel accurately and orderly, the first plate body 410 is coupled to the third plate body 430 and the fourth plate body 440, and is arranged obliquely between the fourth plate body 440 and the second plate body 420, and the bottom of the first plate body 410 is connected to the third plate body 430. The particles entering the device can be guided and collected through the first plate body 410, the second plate body 420 and the third plate body 430, and are linearly distributed in the material falling channel perpendicular to the wind direction, so as to facilitate full contact with the high-pressure airflow, and then simultaneously act on the particles to make them fly together with the airflow to a far place.
[0023] Figure 4
[0024] In order to enable the particles to enter the material falling channel accurately and orderly, the first plate body 410 is coupled to the third plate body 430 and the fourth plate body 440, and is arranged obliquely between the fourth plate body 440 and the second plate body 420, and the bottom of the first plate body 410 is connected to the third plate body 430. The particles entering the device can be guided and collected through the first plate body 410, the second plate body 420 and the third plate body 430, and are linearly distributed in the material falling channel perpendicular to the wind direction, so as to facilitate full contact with the high-pressure airflow, and then simultaneously act on the particles to make them fly together with the airflow to a far place. Figure 2 Figure 3As shown, one side of the equipment housing 100 has an open structure, and multiple collection boxes 300 are slidably installed inside it. The tops of the multiple collection boxes 300 are all open structures, and the multiple collection boxes 300 are linearly distributed in the wind direction, so that the particles automatically separate after entering the spray hopper 460 and fall into the corresponding collection box 300 according to their respective mass differences (light particles are blown to the far side of the spray hopper 460, and heavy particles are blown to the near side of the spray hopper 460).
[0025] Among them, such as Figure 2 As shown, a sloping ridge 120 can be provided between every two collection boxes 300 and between the collection box 300 and the inner wall of the equipment housing 100 to ensure that particles do not accumulate outside the collection box 300, thereby improving the particle recovery rate of the equipment.
[0026] In actual production, it is often necessary to separate mixed particles of different screening grades, so the material feeding channel needs to be adjustable accordingly.
[0027] In a specific plan, such as Figure 6 As shown, the top of the fourth plate 440 is provided with a protrusion 442, and the protrusion 442 has a bevel 4421 and a second groove 4422, as shown. Figure 5 As shown, the first plate 410 includes a shaft 411 and a guide plate 412. The shaft 411 can be driven to rotate and is installed in the second groove 4422. The guide plate 412 is fixedly connected to the shaft 411. The surface of the guide plate 412 is provided with a baffle 413, and the two opposite outer surfaces at its bottom end are provided with a convex shaft 414.
[0028] Continue as Figure 5 As shown, the top of the third plate 430 has a first notch 431, and the two opposite sides of the first notch 431 have a first groove 432. The first plate 410 is coupled to the first groove 432 through a convex shaft 414. When the first plate 410 rotates, it can drive the third plate 430 to slide on the surface of the fourth plate 440, thereby adjusting the distance between the third plate 430 and the second plate 420 (the material discharge channel meets the requirements for particle falling) and improving the applicability of the equipment.
[0029] One thing to note is that, Figure 4As shown, the first plate body 410 bottom end and the third plate body 430 between the connection has a telescopic sealing curtain 450, the third plate body 430 and the fourth plate body 440 between the connection also has a telescopic sealing curtain 450, when the blanking channel with the particles to be separated to adjust, the telescopic sealing curtain 450 between the first plate body 410 and the third plate body 430 can ensure that the particles will not from the first gap 431 out of the blanking channel, the telescopic sealing curtain 450 between the third plate body 430 and the fourth plate body 440 can ensure that the high pressure airflow into the blanking channel, will not from the fourth plate body 440 and the third plate body 430 between the vortex, reduce the loss of high pressure airflow, improve the energy conversion utilization rate of the equipment.
[0030] After the application can meet all the particles fly out of the high pressure gas spray hopper 460, if the separated particle volume changes, the landing point of various particles will change, for example, the particle volume increases, its mass increases, its inertia after flying out of the spray hopper 460 also increases, if the collection box 300 position is unchanged, the heavy particles will be mixed into the light particles, resulting in incomplete separation of particles, if the collection box 300 is moved every time the separated particles are replaced, it is very inconvenient.
[0031] In order to ensure that the particle volume changes and the collection box 300 does not move, the particles can still be separated, in a specific scheme, by changing the angle of the spray hopper 460 discharge end, the landing point of various particles can be changed, so that the landing point of various particles still maintains obvious difference and falls into the corresponding collection box 300, improving the self-adaptive ability of the equipment, avoiding manual adjustment of the collection box 300, and thus improving the production efficiency.
[0032] In order to make the discharge angle of the spray hopper 460 change synchronously with the volume change (increase or decrease) of the particles to be separated, and reduce the workload of the operator, in a specific embodiment, as shown in Figure 9 As shown, the top plate 461 and the second plate body 420 are connected with a plurality of elastic members 480, the elastic member 480 adopts an arc spring, the two ends of the arc spring are fixedly connected with the top plate 461 and the second plate body 420 respectively, and are in a compressed state, so as to have a thrust force for reducing the angle of the spray hopper 460, in order to keep the angle of the spray hopper 460 stable, at least one first through hole 422 (see Figure 7 ) is formed on the surface of the second plate body 420, at least one roller 490 (see Figure 10 ) is rotatably installed on the surface of the second plate body 420, at least one rope 470 is fixedly installed on the top of the spray hopper 460, the other end of the rope 470 passes through the roller 490, passes through the first through hole 422 and is fixedly connected with the third plate body 430, the rope 470 is always in a taut state under the elastic force of the arc spring, so as to keep the angle of the spray hopper 460 stable.
[0033] The third plate body 430 and the spray hopper 460 are connected by the rope 470, and the elastic member 480 releases elastic force. When the position of the third plate body 430 changes, the inclination angle of the spray hopper 460 also changes and then remains stable.
[0034] In order to enable the spray hopper 460 to smoothly enter the particles after the particles pass through the discharge port (below the second gap 421) during the change of the elevation angle, and not to be hindered due to the change of the angle of the spray hopper 460, in a specific embodiment, as shown in Figure 8 The spray hopper 460 includes a top plate 461, two side plates 462, and a bottom plate 463. The top plate 461 and the bottom plate 463 are fixedly connected through the two side plates 462 and surround a funnel-shaped structure. The bottom plate 463 is in an arc-shaped structure. The top plate 461 is rotatably installed in the second gap 421 (see Figure 4 ), and the fourth plate body 440 is provided with a third groove 443 (see Figure 6 ) with the same curvature as the bottom plate 463. The bottom plate 463 is always in abutment with the third groove 443 (see Figure 4 ). Thus, when the spray hopper 460 rotates by a certain angle, the particles fly out from the discharge port, pass through the third groove 443, and then enter the spray hopper 460.
[0035] It should be noted that, as shown in Figure 4 , Figure 6 and Figure 8 , the angle adjustment of the spray hopper 460 has two limit positions. One is the limit of the decrease of the elevation angle. At this time, the left end of the bottom plate 463 does not exceed the left side edge of the third groove 443, so as to avoid the bottom plate 463 from being blocked by a part of the discharge port due to the decrease of the elevation angle of the spray hopper 460. The other is the limit of the increase of the elevation angle. At this time, in order to prevent the spray hopper 460 from being separated from the discharge port, the left end of the bottom plate 463 is located at the right side edge of the third groove 443 and cannot be separated from it, as shown in Figure 1 The servo motor 600 is fixedly installed outside the equipment box 100. The output end of the servo motor 600 penetrates through the equipment box 100 and is fixedly connected with the rotation center of the shaft body 411.
[0036] The servo motor 600 drives the first plate body 410 to rotate on the surface of the fourth plate body 440, and then drives the third plate body 430 to slide on the surface of the fourth plate body 440, so as to adjust the width of the material falling channel, and then to satisfy the uniform arrangement of the separated mixed particles at the position through which the high-pressure airflow passes. At the same time, under the pulling force of the third plate body 430 and the resetting force of the elastic member 480, the spray hopper 460 changes the elevation angle of the spray, realizes the full separation of various particles and the accurate falling of the particles into the corresponding collection box 300, and improves the separation effect of the equipment on the mixed plastic particles of various materials.
[0037] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.
Claims
1. A plastic particle air flow separation device, comprising a device box (100) and a feed hopper (110) fixedly installed on the top thereof and a blower (200) inside thereof, characterized in that, The feeding hopper (110) is provided below with a particle positioning mechanism (400) for restraining the plastic particles to form a row and simultaneously bearing the wind force, the particle positioning mechanism (400) comprises: A fourth plate body (440) is provided below the feeding hopper (110) in an L-shaped structure, the top of the fourth plate body (440) is in abutment with one side edge of the bottom of the feeding hopper (110), and the fourth plate body (440) is fixedly installed on the inner wall of the equipment box (100); A first plate body (410) is coupled with the fourth plate body and is provided on one side of the fourth plate body (440) in an inclined manner, for guiding the plastic particles to converge; A second plate body (420) and a third plate body (430) are provided in a vertical manner, and a material falling channel is formed between the second plate body (420) and the third plate body (430), the first plate body (410) is coupled with the third plate body (430), the third plate body (430) is slidingly installed on the surface of the fourth plate body (440), the distance between the material falling channel can be set according to the volume of the plastic particles, the top of the second plate body (420) is in abutment with the other side edge of the bottom of the feeding hopper (110), further guiding the plastic particles into the material falling channel, and the plastic particles are distributed in a linear manner perpendicular to the wind direction.
2. The plastic particle air flow separation device of claim 1, wherein, A second notch (421) is formed on the bottom of the second plate body (420), a material outlet is formed between the second notch (421) and the fourth plate body (440), a material spraying hopper (460) in a funnel-shaped structure is arranged in the material outlet, the material outlet end of the material spraying hopper (460) is inclined at a set angle with respect to the wind direction, and a plurality of air blowing holes (433) are formed on the surface close to the bottom of the third plate body (430).
3. The plastic particle air flow separation device of claim 2, wherein, A plurality of second through holes (441) are formed on the surface of the fourth plate body (440), a blower (200) is fixedly installed on one side in the equipment box (100), an air pipe (500) is fixedly installed on the air outlet end of the blower (200), the air pipe (500) is provided with one air inlet and a plurality of air outlets, the air inlet is connected with the blower (200), and the plurality of air outlets are connected with the plurality of second through holes (441).
4. The plastic particle air flow separation device of claim 3, wherein, One side of the equipment box (100) is in an open structure, a plurality of collection boxes (300) are slidingly installed in the equipment box (100), the top of each of the plurality of collection boxes (300) is in an open structure, and the plurality of collection boxes (300) are distributed in a linear manner in the direction of the wind direction.
5. The plastic particle air flow separation device of claim 4, wherein, A protrusion (442) is arranged on the top of the fourth plate body (440), the protrusion (442) is provided with an inclined surface (4421) and a second groove (4422), the first plate body (410) comprises a shaft body (411) and a material guide plate (412), the shaft body (411) is rotatably installed in the second groove (4422), the material guide plate (412) is fixedly connected with the shaft body (411), the surface of the material guide plate (412) is provided with a baffle (413), and the bottom end of the baffle (413) is provided with protruding shafts (414) on the outer surfaces of two opposite sides.
6. The plastic particle air flow separation device of claim 5, wherein, The third plate body (430) is provided with a first notch (431) at the top, and a first groove (432) is formed at two opposite sides in the first notch (431), the first plate body (410) is coupled and connected in the first groove (432) through a convex shaft (414), and a telescopic sealing curtain (450) is connected between the bottom end of the first plate body (410) and the third plate body (430).
7. The plastic particle air flow separation device of claim 6, wherein, The telescopic sealing curtain (450) is also connected between the third plate body (430) and the fourth plate body (440).
8. The plastic particle air flow separation device of claim 2, wherein, The spraying hopper (460) comprises a top plate (461), two side plates (462) and a bottom plate (463), the top plate (461) and the bottom plate (463) are fixedly connected through the two side plates (462) and form a funnel-shaped structure, the bottom plate (463) is in an arc structure, the top plate (461) is rotatably installed in the second notch (421), the fourth plate body (440) is provided with a third groove (443) with the same curvature as the bottom plate (463) on the surface, and the bottom plate (463) is always in abutment with the third groove (443).
9. The plastic particle air flow separation device of claim 8, wherein, A plurality of elastic members (480) are connected between the top plate (461) and the second plate body (420), at least one first through hole (422) is formed on the surface of the second plate body (420), at least one roller (490) is rotatably installed on the surface of the second plate body (420), at least one rope (470) is fixedly installed at the top of the spraying hopper (460), the other end of the rope (470) is wound around the roller (490), passes through the first through hole (422) and is fixedly connected with the third plate body (430), a servo motor (600) is fixedly installed on the outside of the equipment box (100), and the output end of the servo motor (600) is fixedly connected with the rotation center of the shaft body (411) through the equipment box (100).
10. A separation method of a plastic particle air flow separation device, which adopts the plastic particle air flow separation device of claim 1.