A plastic particle screening device for plastic runway

Abstract

The invention discloses a plastic particle screening device for a plastic runway, which belongs to the field of plastic particle screening. The plastic particle screening device for a plastic runway comprises supporting legs, a lower bin, a centrifugal screening mechanism and a linkage discharging component. The invention uses a circular screen plate as a plastic particle screening component. Through the cooperation of vibration and centrifugation, the plastic particles can be evenly diffused to the surrounding area when being screened on the screen plate. The plastic particles after centrifugal diffusion can be evenly dispersed on the screen plate, so that congestion is not easy to occur between the plastic particles. Combined with vibration, the screening efficiency of the plastic particles can be greatly improved. The screening device is in a barrel column shape as a whole, which occupies a small area when used, and can automatically classify and discharge the screened plastic particles. It can also automatically and continuously put in a small amount of plastic particles multiple times during screening, which greatly reduces the workload of personnel and improves the screening efficiency and screening effect of plastic particles.

Description

Technical Field

[0001] The present invention relates to the field of plastic particle screening, and more specifically, to a plastic particle screening device for a plastic runway. Background Art

[0002] The plastic track is also called the track and field sports track. It is composed of polyurethane prepolymer, mixed polyether, waste tire rubber, EPDM rubber particles or PU particles, pigments, additives, and fillers. The plastic track has the characteristics of good flatness, high compressive strength, appropriate hardness and elasticity, and stable physical properties. It is conducive to the athletes' speed and technology, effectively improving sports performance and reducing the rate of falls. The plastic track is composed of polyurethane rubber and other materials. It has certain elasticity and color, certain UV resistance and aging resistance, and is internationally recognized as the best all-weather outdoor sports field floor material. Before laying the plastic track, the plastic particles need to be screened to ensure that the plastic particles can meet the laying standards.

[0003] The traditional screening method first pours the plastic particles onto the sieve plate, which is inclined. The plastic particles will automatically slide down on the inclined sieve plate to achieve screening. Some sieve plates are slightly inclined, but the vibrators they are equipped with can allow the plastic particles to stay on the sieve plate longer, thereby improving the screening effect. However, both screening methods undoubtedly require longer sieve plates to achieve good screening effects. Therefore, the screening device occupies a large area when used. If a small-volume horizontal vibrating sieve plate is used, after one screening is completed, the unscreened plastic particles on the sieve plate need to be cleaned, which will greatly affect the work efficiency. Therefore, the present invention provides a plastic particle screening device for a plastic runway. Summary of the invention

[0004] Technical issues to be solved:

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a plastic particle screening device for a plastic runway. The present invention uses a circular screen plate as a plastic particle screening component. Through the combination of vibration and centrifugation, the plastic particles can be evenly diffused to the surrounding area when being screened on the screen plate. The plastic particles after centrifugal diffusion can be evenly dispersed on the screen plate, so that congestion is not easy to occur between the plastic particles. Combined with vibration, the screening efficiency of the plastic particles can be greatly improved. The screening device is generally in the shape of a barrel column, which occupies a small area when used, and can automatically classify and discharge the screened plastic particles. It can also automatically and continuously put in small amounts of plastic particles multiple times during screening, which greatly reduces the workload of personnel and improves the screening efficiency and screening effect of plastic particles.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A plastic particle screening device for a plastic runway comprises support legs, a lower material bin, a centrifugal screening mechanism and a linkage discharging assembly, wherein the outer circumferential surface of the centrifugal screening mechanism is provided with four support legs, and the four support legs are fixedly connected to a mounting seat on one side close to the centrifugal screening mechanism, one side of the mounting seat is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to the outer circumferential surface of the centrifugal screening mechanism, and one side of the mounting seat is also fixedly connected to a strong spring, and the strong spring is sleeved on the outer circumferential surface of the connecting rod and fixed to the outer circumferential surface of the centrifugal screening mechanism. The upper surface is fixedly connected with a linkage discharging assembly, the upper end of the supporting leg is fixedly connected with a lower material bin, the lower end of the lower material bin is provided with a lower material port, the upper end of the linkage discharging assembly extends into the lower material port, the centrifugal screening mechanism comprises a bucket-shaped shell, a screen plate, a bearing, a fixing rod, a bidirectional motor, a pinion, an eccentric wheel, a large gear ring and a connecting bucket, a screen plate is provided in the bucket-shaped shell, the outer circumferential surface of the screen plate is fixedly connected with a bearing, the outer circumferential surface of the bearing is fixedly connected with a fixing rod, one end of the fixing rod is fixed to the inner wall of the bucket-shaped shell, and the outer circumferential surface of the bucket-shaped shell is fixedly connected with A bidirectional motor, a pinion is fixedly connected to the output shaft at one end of the bidirectional motor, an eccentric wheel is fixedly connected to the output shaft at the other end of the bidirectional motor, a large gear ring is fixedly connected to the lower surface of the screen plate, the large gear ring is meshed with the pinion, a connecting bucket is fixedly connected to the outer ring of the bearing, a second screening port is arranged at the lower end of the connecting bucket, a chamber is formed between the connecting bucket and the bucket-shaped shell, a first screening port is arranged at the lower end of the bucket-shaped shell, the first screening port is communicated with the chamber, the linkage discharging assembly includes a linkage rod and a sealing plate, the linkage rod is fixedly connected to the centrifugal screening On the upper surface of the mechanism, the outer circumferential surface of the linkage rod is fixedly connected with a sealing plate, the linkage rod extends into the discharge port, and the sealing plate matches the discharge port. After the bidirectional motor is started, it cooperates with the eccentric wheel to drive the entire centrifugal screening mechanism to vibrate in the horizontal direction. During the vibration process of the centrifugal screening mechanism, it will drive the linkage rod and the sealing plate to vibrate horizontally. During the horizontal vibration process, the sealing plate will continuously stagger and match with the discharge port. When the sealing plate is staggered with the discharge port, the plastic particles can be automatically discharged from the discharge port. When the sealing plate matches with the discharge port, the sealing plate will block the discharge port.

[0008] Furthermore, a stopper is fixedly connected between the outer ring of the bearing and the bucket-shaped housing, and the stopper is located directly above the pinion gear;

[0009] Furthermore, the upper surface of the stopper is inclined on both sides;

[0010] Furthermore, the upper surface of the sieve plate is fixedly connected with uniformly distributed guide baffles, and the guide baffles are in an arc shape;

[0011] Furthermore, the first screening port and the second screening port are both inclined, and the outlet direction of the first screening port is opposite to the outlet direction of the second screening port;

[0012] Furthermore, the outer circumferential surface of the bucket-shaped shell is provided with a notch 1, the outer circumferential surface of the connecting bucket is provided with a notch 2, and the small gear sequentially passes through the notch 1 and the notch 2 and meshes with the large gear ring;

[0013] Furthermore, the lower end of the lower silo is in an inverted cone shape.

[0014] Beneficial Effects Compared with the prior art, the present invention has the following advantages:

[0015] 1. In this scheme, after the plastic particles in the lower silo fall on the surface of the screen plate, one end of the bidirectional motor cooperates with the eccentric wheel to drive the screen plate to vibrate, and the screen plate can vibrate and screen the plastic particles. At the same time, the other end of the bidirectional motor cooperates with the pinion to drive the large gear ring to rotate slowly, and the slowly rotating large gear ring will drive the screen plate to rotate slowly synchronously. The screen plate will generate a certain centrifugal force during the slow rotation process. The centrifugal force combined with the vibration will allow the plastic particles on the screen plate to slowly diffuse to the periphery. The slow diffusion to the periphery allows the plastic particles to stay on the screen plate for a long enough time for vibration screening, and on the other hand, it makes it difficult for the plastic particles to be congested on the screen plate, thereby greatly improving the screening efficiency and screening effect of the plastic particles. Subsequently, the plastic particles that pass through the screen plate will enter the connecting bucket and finally be discharged from the second screening port. The plastic particles that have not passed through the screen plate will enter the chamber after further centrifugal diffusion, and finally be discharged from the first screening port. The screened plastic particles can be automatically classified and discharged, thereby reducing the labor burden of personnel;

[0016] 2. The entire centrifugal screening mechanism of this scheme is connected to the supporting legs through a connecting rod and a strong spring. After the bidirectional motor is started, it cooperates with the eccentric wheel to drive the entire centrifugal screening mechanism to vibrate in the horizontal direction. During the vibration process, the centrifugal screening mechanism will drive the linkage rod and the sealing plate to vibrate horizontally. During the horizontal vibration process, the sealing plate will continuously stagger and match with the discharge port. When the sealing plate is staggered with the discharge port, the plastic particles can be automatically discharged from the discharge port. When the sealing plate matches with the discharge port, the sealing plate will block the discharge port, which can prevent the plastic particles from being discharged continuously from the discharge port, but discharge in an intermittent and continuous manner. Moreover, the staggered and matched discharging method in this vibration form can prevent the plastic particles from being discharged too much at one time, so as to prevent the discharged plastic particles from being unable to be screened in time, causing congestion of plastic particles and affecting the screening efficiency. Moreover, the vibrating linkage rod can prevent the plastic particles from being blocked at the discharge port when discharging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the lower bin in the split state of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the centrifugal screening mechanism of the present invention;

[0020] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0021] Figure 5 It is a schematic cross-sectional structure diagram of the centrifugal screening mechanism of the present invention;

[0022] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0023] Figure 7 It is a schematic diagram of the structure of the linkage discharging assembly and the discharge port of the present invention.

[0024] Description of the numbers in the figure:

[0025] 1. Support leg; 101. Mounting seat; 102. Connecting rod; 103. Strong spring; 2. Discharge bin; 201. Discharge port; 2. Centrifugal screening mechanism; 301. Bucket-shaped shell; 3011. Chamber; 3012. First screening port; 3013. Notch one; 302. Screen plate; 3021. Guide partition; 303. Bearing; 3031. Stopper; 304. Fixed rod; 305. Bidirectional motor; 306. Pinion; 307. Eccentric wheel; 308. Large gear ring; 309. Connecting bucket; 3091. Second screening port; 3092. Notch two; 4. Linkage discharging assembly; 401. Linkage rod; 402. Sealing plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0029] See also Figure 1-7 A plastic particle screening device for a plastic runway comprises a supporting leg 1, a lower bin 2, a centrifugal screening mechanism 3 and a linkage discharging assembly 4. The outer circumferential surface of the centrifugal screening mechanism 3 is provided with four supporting legs 1. The four supporting legs 1 are fixedly connected with a mounting seat 101 on one side close to the centrifugal screening mechanism 3. A connecting rod 102 is rotatably connected to one side of the mounting seat 101. The other end of the connecting rod 102 is rotatably connected to the outer circumferential surface of the centrifugal screening mechanism 3. A strong spring 103 is also fixedly connected to one side of the mounting seat 101. The strong spring 103 is sleeved on the outer circumferential surface of the connecting rod 102 and fixed to the outer circumferential surface of the centrifugal screening mechanism 3. The upper surface of the centrifugal screening mechanism 3 is fixedly connected with the linkage discharging assembly 4.

[0030] The upper end of the support leg 1 is fixedly connected to a material discharge bin 2, and a material discharge port 201 is provided at the lower end of the material discharge bin 2. The upper end of the linkage discharge assembly 4 extends into the material discharge port 201.

[0031] The centrifugal screening mechanism 3 includes a bucket-shaped housing 301, a sieve plate 302, a bearing 303, a fixing rod 304, a bidirectional motor 305, a pinion 306, an eccentric wheel 307, a large gear ring 308 and a connecting bucket 309. The sieve plate 302 is arranged in the bucket-shaped housing 301, the outer circumferential surface of the sieve plate 302 is fixedly connected to the bearing 303, the outer circumferential surface of the bearing 303 is fixedly connected to the fixing rod 304, one end of the fixing rod 304 is fixed to the inner wall of the bucket-shaped housing 301, the outer circumferential surface of the bucket-shaped housing 301 is fixedly connected to the bidirectional motor 305, one end of the bidirectional motor 305 is output A pinion 306 is fixedly connected to the output shaft, an eccentric wheel 307 is fixedly connected to the output shaft at the other end of the bidirectional motor 305, a large gear ring 308 is fixedly connected to the lower surface of the screen plate 302, the large gear ring 308 is meshed with the pinion 306, a connecting bucket 309 is fixedly connected to the outer ring of the bearing 303, a second screening opening 3091 is arranged at the lower end of the connecting bucket 309, a chamber 3011 is formed between the connecting bucket 309 and the bucket-shaped housing 301, a first screening opening 3012 is arranged at the lower end of the bucket-shaped housing 301, and the first screening opening 3012 is communicated with the chamber 3011;

[0032] The outer circumference of the bucket-shaped housing 301 is provided with a notch 1 3013, and the outer circumference of the connecting bucket 309 is provided with a notch 2 3092. The small gear 306 passes through the notch 1 3013 and the notch 2 3092 in sequence and meshes with the large gear ring 308.

[0033] During the use of this solution, after the plastic particles in the lower silo 2 fall onto the surface of the sieve plate 302, one end of the bidirectional motor 305 cooperates with the eccentric wheel 307 to drive the sieve plate 302 to vibrate, and the sieve plate 302 can vibrate and screen the plastic particles. At the same time, the other end of the bidirectional motor 305 cooperates with the small gear 306 to drive the large gear ring 308 to rotate slowly. The slowly rotating large gear ring 308 will drive the sieve plate 302 to rotate slowly synchronously. The sieve plate 302 will generate a certain centrifugal force during the slow rotation process. The centrifugal force combined with the vibration will enable the plastic particles on the sieve plate 302 to slowly move to the surrounding Diffusion, its slow diffusion to the surrounding, on the one hand, allows the plastic particles to stay on the screen plate 302 for a long enough time for vibration screening, and on the other hand, it makes it difficult for the plastic particles to be blocked on the screen plate 302, thereby greatly improving the screening efficiency and screening effect of the plastic particles. Subsequently, the plastic particles passing through the screen plate 302 will enter the connecting bucket 309, and finally be discharged from the second screening port 3091. The plastic particles that have not passed through the screen plate 302 will enter the chamber 3011 after further centrifugal diffusion, and finally be discharged from the first screening port 3012. The screened plastic particles can be automatically classified and discharged, thereby reducing the labor burden of personnel.

[0034] See also Figure 3A stopper 3031 is fixedly connected between the outer ring of the bearing 303 and the bucket-shaped housing 301, and the stopper 3031 is located just above the pinion 306;

[0035] During use of the present solution, the stopper 3031 is located just above the pinion 306 , so that the plastic particles will not fall onto the pinion 306 when they fall, thereby avoiding affecting the transmission of the pinion 306 .

[0036] See also Figure 3 , the upper surface of the stopper 3031 is inclined on both sides;

[0037] During use of this solution, when plastic particles fall onto the upper surface of the stopper 3031 , since the upper surface of the stopper 3031 is inclined, the plastic particles will not accumulate on the stopper 3031 , thereby ensuring that the plastic particles can be discharged normally.

[0038] See also Figure 3 The upper surface of the sieve plate 302 is fixedly connected with uniformly distributed guide baffles 3021, and the guide baffles 3021 are in an arc shape;

[0039] During use of this solution, during the centrifugal diffusion of plastic particles, the guide baffle 3021 can guide the plastic particles, thereby increasing the path of the plastic particles on the sieve plate 302 and further improving the screening effect.

[0040] See also Figure 5 , the first sieve opening 3012 and the second sieve opening 3091 are both inclined, and the outlet direction of the first sieve opening 3012 is opposite to the outlet direction of the second sieve opening 3091;

[0041] During use of this solution, the outlets in opposite directions facilitate personnel to collect the screened plastic particles.

[0042] See also Figure 1-3 7, the linkage discharge assembly 4 includes a linkage rod 401 and a sealing plate 402, the linkage rod 401 is fixedly connected to the upper surface of the centrifugal screening mechanism 3, the outer circumferential surface of the linkage rod 401 is fixedly connected with the sealing plate 402, the linkage rod 401 extends into the discharge port 201, and the sealing plate 402 is consistent with the discharge port 201;

[0043] During use of the present solution, the entire centrifugal screening mechanism 3 is connected to the supporting leg 1 through the connecting rod 102 and the strong spring 103. After starting, the bidirectional motor 305 cooperates with the eccentric wheel 307 to drive the entire centrifugal screening mechanism 3 to vibrate in the horizontal direction. During the vibration process, the centrifugal screening mechanism 3 will drive the linkage rod 401 and the sealing plate 402 to vibrate horizontally. During the horizontal vibration process, the sealing plate 402 will continuously stagger and coincide with the discharge port 201. When the sealing plate 402 is staggered with the discharge port 201, the plastic particles can automatically be discharged from the discharge port. 201, when the sealing plate 402 is matched with the discharge port 201, the sealing plate 402 will block the discharge port 201, which can prevent the plastic particles from being discharged from the discharge port 201 continuously, but discharge them in an intermittent and continuous manner. Moreover, the staggered and matched discharge method in the form of vibration can prevent the one-time discharge amount of plastic particles from being too much, so as to prevent the discharged plastic particles from being unable to be screened in time, causing congestion of plastic particles and affecting the screening efficiency. Moreover, the vibrating linkage rod 401 can prevent the plastic particles from being blocked at the discharge port 201 when discharging.

[0044] See also Figure 1-2 , the lower end of the lower bin 2 is in an inverted cone shape;

[0045] During use, this solution ensures that the plastic particles can be discharged completely, so as to avoid the phenomenon that the plastic particles remain at the bottom end of the lower bin 2 after the discharge is completed.

[0046] In the present invention, when the plastic particles in the lower silo 2 fall onto the surface of the sieve plate 302, one end of the bidirectional motor 305 cooperates with the eccentric wheel 307 to drive the sieve plate 302 to vibrate, and the sieve plate 302 can vibrate and screen the plastic particles. At the same time, the other end of the bidirectional motor 305 cooperates with the small gear 306 to drive the large gear ring 308 to rotate slowly. The slowly rotating large gear ring 308 will drive the sieve plate 302 to rotate slowly synchronously. The sieve plate 302 will generate a certain centrifugal force during the slow rotation process. The centrifugal force combined with the vibration will allow the plastic particles on the sieve plate 302 to slowly diffuse to the surrounding area. On the one hand, it slowly diffuses to the surrounding area, which allows the plastic particles to stay on the screen plate 302 for a long enough time for vibration screening, and on the other hand, it makes it difficult for the plastic particles to be blocked on the screen plate 302, thereby greatly improving the screening efficiency and screening effect of the plastic particles. Subsequently, the plastic particles passing through the screen plate 302 will enter the connecting bucket 309 and finally be discharged from the second screening port 3091. The plastic particles that have not passed through the screen plate 302 will enter the chamber 3011 after further centrifugal diffusion, and finally be discharged from the first screening port 3012. The screened plastic particles can be automatically classified and discharged, thereby reducing the labor burden of personnel.

[0047] Among them, the entire centrifugal screening mechanism 3 of this scheme is connected to the support leg 1 through the connecting rod 102 and the strong spring 103. After the bidirectional motor 305 is started, it cooperates with the eccentric wheel 307 to drive the entire centrifugal screening mechanism 3 to vibrate in the horizontal direction. During the vibration process, the centrifugal screening mechanism 3 will drive the linkage rod 401 and the sealing plate 402 to vibrate horizontally. During the horizontal vibration process, the sealing plate 402 will continuously stagger and coincide with the discharge port 201. When the sealing plate 402 is staggered with the discharge port 201, the plastic particles can automatically flow out from the discharge port 201. 1. When the sealing plate 402 is matched with the discharge port 201, the sealing plate 402 will block the discharge port 201, which can prevent the plastic particles from being discharged continuously from the discharge port 201, but discharge them in an intermittent and continuous manner. Moreover, the staggered and matched discharge method in the form of vibration can prevent the plastic particles from being discharged too much at one time, so as to prevent the discharged plastic particles from being unable to be screened in time, causing congestion of plastic particles and affecting the screening efficiency. Moreover, the vibrating linkage rod 401 can prevent the plastic particles from being blocked at the discharge port 201 when discharging.

[0048] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plastic particle screening device for a plastic runway, comprising a support leg (1), a lower material bin (2), a centrifugal screening mechanism (3) and a linkage discharging assembly (4), characterized in that: The outer circumferential surface of the centrifugal screening mechanism (3) is provided with four supporting legs (1); one side of the four supporting legs (1) close to the centrifugal screening mechanism (3) is fixedly connected to a mounting seat (101); one side of the mounting seat (101) is rotatably connected to a connecting rod (102); the other end of the connecting rod (102) is rotatably connected to the outer circumferential surface of the centrifugal screening mechanism (3); one side of the mounting seat (101) is also fixedly connected to a strong spring (103); the strong spring (103) is sleeved on the outer circumferential surface of the connecting rod (102) and fixed to the outer circumferential surface of the centrifugal screening mechanism (3); the upper surface of the centrifugal screening mechanism (3) is fixedly connected to a linkage discharging assembly (4); the upper ends of the supporting legs (1) are fixedly connected to the outer circumferential surface of the connecting rod (102). The centrifugal screening mechanism (3) comprises a bucket-shaped housing (301), a screen plate (302), a bearing (303), a fixing rod (304), a bidirectional motor (305), a pinion (306), an eccentric wheel (307), a large gear ring (308) and a connecting bucket (309). The screen plate (302) is provided in the bucket-shaped housing (301). The outer circumferential surface of the screen plate (302) is fixedly connected to the bearing (303). The outer circumferential surface of the bearing (303) is fixedly connected to the fixing rod (304). One end of the fixing rod (304) is connected to the connecting bucket (309). The inner wall of the bucket-shaped outer shell (301) is fixed, a bidirectional motor (305) is fixedly connected to the outer circumferential surface of the bucket-shaped outer shell (301), a pinion (306) is fixedly connected to one end of the output shaft of the bidirectional motor (305), an eccentric wheel (307) is fixedly connected to the other end of the output shaft of the bidirectional motor (305), a large toothed ring (308) is fixedly connected to the lower surface of the sieve plate (302), the large toothed ring (308) and the pinion (306) are meshed, a connecting bucket (309) is fixedly connected to the outer ring of the bearing (303), a second screening port (3091) is provided at the lower end of the connecting bucket (309), and a chamber (309) is formed between the connecting bucket (309) and the bucket-shaped outer shell (301). 3011), a first screening opening (3012) is provided at the lower end of the bucket-shaped housing (301), the first screening opening (3012) is communicated with the chamber (3011), the linkage discharge assembly (4) comprises a linkage rod (401) and a sealing plate (402), the linkage rod (401) is fixedly connected to the upper surface of the centrifugal screening mechanism (3), the outer circumferential surface of the linkage rod (401) is fixedly connected to the sealing plate (402), the linkage rod (401) extends into the discharge opening (201), the sealing plate (402) is matched with the discharge opening (201), after the bidirectional motor is started, it cooperates with the eccentric wheel to drive the entire centrifugal screening mechanism to vibrate in the horizontal direction, and during the vibration of the centrifugal screening mechanism,It will drive the linkage rod and the sealing plate to vibrate horizontally. During the horizontal vibration, the sealing plate will constantly stagger and match with the feeding port. When the sealing plate and the feeding port are staggered, the plastic particles can be automatically discharged from the feeding port. When the sealing plate and the feeding port match, the sealing plate will block the feeding port.

2. The plastic particle screening device for a plastic runway according to claim 1, characterized in that: A stopper (3031) is also fixedly connected between the outer ring of the bearing (303) and the bucket-shaped housing (301), and the stopper (3031) is located directly above the pinion (306).

3. The plastic particle screening device for a plastic runway according to claim 2, characterized in that: The upper surface of the stopper (3031) is inclined on both sides.

4. The plastic particle screening device for a plastic track according to claim 1, characterized in that: The upper surface of the sieve plate (302) is fixedly connected with evenly distributed guide baffles (3021), and the guide baffles (3021) are in the shape of an arc.

5. The plastic particle screening device for a plastic track according to claim 1, characterized in that: The first sieve opening (3012) and the second sieve opening (3091) are both inclined, and the outlet direction of the first sieve opening (3012) is opposite to the outlet direction of the second sieve opening (3091).

6. The plastic particle screening device for a plastic track according to claim 1, characterized in that: The outer circumferential surface of the bucket-shaped housing (301) is provided with a first notch (3013), the outer circumferential surface of the connecting bucket (309) is provided with a second notch (3092), and the small gear (306) passes through the first notch (3013) and the second notch (3092) in sequence and meshes with the large gear ring (308).

7. The plastic particle screening device for a plastic track according to claim 1, characterized in that: The lower end of the lower material bin (2) is in an inverted cone shape.

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