A plastic particle screening device

Abstract

The utility model provides a kind of plastic particle screening device, it is related to screening device technical field, the utility model includes rack, the top of rack is provided with several spring seat, the bottom of machine body is connected with rack by spring seat, the top of machine body is provided with buffer device, the buffer device includes two slot rods and a sliding plate, the inner wall sliding connection of sliding plate has telescopic plate, the top of sliding plate two sides is respectively fixedly connected with L-shaped block, the top of telescopic plate is fixedly connected with round bar, the outer surface one side of slot rod is provided with support rod, utility model is by setting buffer device, by installing telescopic plate that can be telescopic in the top of machine body, by control servo motor drives eccentric shaft rod rotation and pulls sliding plate to and fro movement, when sliding plate is close to servo motor, telescopic plate extends and moves the part plastic particle on net frame to the direction of servo motor, improve the screening time of plastic particle on net frame, to improve the screening effect of screening device.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, and in particular to a plastic particle screening device. Background Technology

[0002] Plastic granule screening equipment is used to classify and remove impurities from plastic granules to ensure that the plastic granules have uniform particle size and purity that meets production requirements. A linear vibrating screen is a device that uses the excitation force generated by a vibrating motor to make the material jump forward on the screen mesh, thereby achieving material screening.

[0003] When using a screening device, the plastic granules to be screened are placed on the top screen of a linear vibrating screen. The screen is vibrated by a vibrating motor, causing the plastic granules to move on the outer surface of the screen. During the screening process, the plastic granules may move too fast on the screen, and some granules may not pass through the screen completely and enter the next screen, resulting in incomplete screening of the plastic granules. Utility Model Content

[0004] The purpose of this invention is to solve the problem that during the screening process, plastic particles may not completely pass through the screen and enter the next screen layer due to the excessive speed of movement on the screen, resulting in incomplete screening of plastic particles. Therefore, this invention proposes a plastic particle screening device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a plastic granule screening device, comprising a frame, a plurality of spring seats at the top of the frame, the bottom of the machine body being connected to the frame via the spring seats, a plurality of mesh frames installed inside the machine body, a screen being provided on the outer surface of the mesh frames, two vibrating motors being provided at the bottom of the machine body, a plurality of discharge troughs being provided at one end of the machine body, the discharge troughs having different orientations away from the end of the machine body, and a buffer device being provided at the top of the machine body to buffer the plastic granules moving on the screen on the surface of the mesh frames.

[0006] The effect achieved by the above components is as follows: When using the vibrating screen, the plastic granules to be screened are poured into the uppermost screen frame inside the machine body. The two vibrating motors at the bottom of the machine body drive the machine body to vibrate, causing the plastic granules to move on the outer surface of the screen frame towards the discharge chute. Particles smaller than the filter screen holes on the outer surface of the screen frame will enter the outer surface of the next screen frame, and finally reach the bottom of the inner wall of the machine body. With the vibration of the machine body, the screened plastic granules will enter the three discharge chute and be output in different directions.

[0007] Preferably, the buffer device includes two grooved rods and a sliding plate. The bottom ends of the two grooved rods are fixedly connected to the top sides of the machine body, respectively. The two ends of the sliding plate slide on the inner walls of the two grooved rods, respectively. A telescopic plate is slidably connected to the inner wall of the sliding plate. L-shaped blocks are fixedly connected to the top sides of the sliding plate, respectively. A round rod is fixedly connected to the top of the telescopic plate. One end of the round rod slides on the inner wall of the L-shaped block. A first spring is provided at the top of the telescopic plate. The upper and lower ends of the first spring are fixedly connected to one side of the L-shaped block and the top of the telescopic plate, respectively. A conical block is fixedly connected to the top of the round rod. A support rod is provided on one side of the outer surface of the grooved rod. A ball block is fixedly connected to one side of the top of the support rod. A servo motor is provided on one side of the top of the machine body. An eccentric shaft is installed at the output end of the servo motor through a coupling. A connecting rod is rotatably connected to the end of the eccentric shaft away from the servo motor. The connecting rod is rotatably connected to the top of the sliding plate at the end away from the eccentric shaft.

[0008] The effect achieved by the above components is as follows: By setting up a sliding plate, when using the screening device, after the plastic granules are added to the outer surface of the uppermost mesh frame, the servo motor can be activated. The servo motor drives the eccentric shaft to rotate following the output end of the servo motor. When the eccentric shaft rotates in the direction of the servo motor, one end of it will rotate at one end of the connecting rod, driving the connecting rod to pull the sliding plate in the direction of the servo motor. At the same time, the connecting rod will rotate at the top of the sliding plate, and the two ends of the sliding plate will slide on the inner walls of the two grooved rods. When the conical block at the top of the round rod enters one side of the ball block, it will be blocked by the ball block and push the conical block and the round rod to extend the plate. As the slide plate slides downwards along the inner wall of the slide plate and stretches the first spring, the telescopic plate descends. When the eccentric shaft moves away from the servo motor, the connecting rod pushes the slide plate back to its original direction. After the cone block moves away from the ball block, the stretched first spring returns to its original state, pulling the telescopic plate upwards and into the slide plate. This allows the servo motor to control the slide plate to move back and forth above the mesh frame while driving the eccentric shaft to rotate. When the slide plate approaches the servo motor, the telescopic plate extends, pushing some of the plastic particles on the mesh frame towards the servo motor, thus increasing the screening time of the plastic particles on the mesh frame.

[0009] Preferably, the top of the conical block is provided with an arc-shaped groove, and the inner walls of the arc-shaped groove are arc-shaped on both sides.

[0010] The effect achieved by the above components is that when the cone block comes into contact with the ball block, the ball block will enter the arc-shaped groove at the top of the cone block, making the cone block more stable when it moves at the bottom of the ball block.

[0011] Preferably, a screw is rotatably connected to one end of the inner wall of the groove rod, the outer surface of the screw is threadedly connected to the bottom end of the inner wall of the support rod, and the bottom end of the support rod slides on the inner wall of the groove rod.

[0012] The effect achieved by the above components is as follows: rotating the screw can control the bottom end of the support rod to slide on the inner wall of the groove rod, controlling the movement position of the support rod, and facilitating the adjustment of the distance between the conical block and the ball block to control the lifting height of the telescopic plate.

[0013] Preferably, the inner diameter of the first spring is larger than the diameter of the round rod, and the first spring is sleeved on the outside of the round rod.

[0014] The effect achieved by the above components is that when the first spring is stretched, it will move on the outside of the round rod. The round rod can stabilize the internal shape of the first spring and prevent the first spring from deflecting, which would cause uneven force on the left and right ends of the telescopic plate and affect normal use.

[0015] Preferably, the bottom end of the conical block is fixedly connected to an inclined rod, and the end of the inclined rod away from the conical block is fixedly connected to one side of the round rod.

[0016] The effect achieved by the above components is that by setting diagonal braces, the connection between the conical block and the round rod can be reinforced and supported, thereby improving the stability of the connection structure between the conical block and the round rod.

[0017] Preferably, a support ring is fixedly connected to one side of the top of the machine body, and the bottom end of the connecting rod near the eccentric shaft slides on the top of the support ring.

[0018] The effect achieved by the above components is as follows: when the servo motor drives the eccentric shaft and connecting rod to rotate, the bottom end of the connecting rod near the eccentric shaft will slide at the top of the support ring. The support ring can support the bottom end of the connecting rod, increasing the stability of the connecting rod when it swings.

[0019] Preferably, an auxiliary rod is fixedly connected to the bottom end of the telescopic plate, and the bottom edge of the auxiliary rod is arc-shaped.

[0020] The effect achieved by the above components is that, by setting the auxiliary rod, when the telescopic plate moves downward to fit with the screen on the outer surface of the mesh frame, the edges are less likely to be squeezed and deformed, so that the plastic particles adhere to the bottom of the telescopic plate.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] In this invention, a buffer device is set up, and a telescopic plate is installed at the top of the machine body. By controlling the servo motor to drive the eccentric shaft to rotate and pull the slide back and forth, when the slide approaches the servo motor, the telescopic plate extends and pushes some of the plastic particles on the screen frame towards the servo motor, thereby increasing the screening time of the plastic particles on the screen frame and thus improving the screening effect of the screening device. Attached Figure Description

[0023] Figure 1This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the body of this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the screen part of this utility model;

[0026] Figure 4 This utility model Figure 3 A magnified three-dimensional structural diagram of point A;

[0027] Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the sliding plate part of this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the support rod of this utility model.

[0029] Legend: 1. Machine body; 2. Buffer device; 21. Servo motor; 22. Eccentric shaft; 23. Groove rod; 24. Slide plate; 25. Telescopic plate; 26. Round rod; 27. First spring; 28. L-shaped block; 29. ​​Conical block; 210. Connecting rod; 211. Support rod; 212. Ball block; 213. Arc groove; 214. Screw; 215. Diagonal rod; 216. Support ring; 217. Auxiliary rod; 3. Frame; 4. Spring seat; 5. Mesh frame; 6. Discharge chute; 7. Vibration motor. Detailed Implementation

[0030] Example 1, such as Figure 1-3 As shown, a plastic granule screening device includes a frame 3, with several spring seats 4 at the top of the frame 3. The bottom of the machine body 1 is connected to the frame 3 via the spring seats 4. Several mesh frames 5 are installed inside the machine body 1, and screens are provided on the outer surface of the mesh frames 5. Two vibrating motors 7 are installed at the bottom of the machine body 1. Several discharge troughs 6 are provided at one end of the machine body 1, with different orientations at the end away from the machine body 1. The top of the machine body 1 is equipped with a device that can slow down the movement of plastic granules on the screens on the surface of the mesh frames 5. The buffer device 2 is used when the vibrating screen is used. The plastic granules to be screened are poured into the screen frame 5 located at the top of the machine body 1. The two vibrating motors 7 at the bottom of the machine body 1 drive the machine body 1 to vibrate, so that the plastic granules move from the outer surface of the screen frame 5 towards the discharge chute 6. The granules smaller than the filter screen holes on the outer surface of the screen frame 5 will enter the outer surface of the next screen frame 5, and finally reach the bottom of the inner wall of the machine body 1. With the vibration of the machine body 1, the screened plastic granules will enter the three discharge chute 6 respectively and be output in different directions.

[0031] Reference Figure 1-5As shown in this embodiment: the buffer device 2 includes two grooved rods 23 and a sliding plate 24. The bottom ends of the two grooved rods 23 are fixedly connected to the top sides of the body 1, respectively. The two ends of the sliding plate 24 slide on the inner walls of the two grooved rods 23, respectively. A telescopic plate 25 is slidably connected to the inner wall of the sliding plate 24. L-shaped blocks 28 are fixedly connected to the top sides of the sliding plate 24, respectively. A round rod 26 is fixedly connected to the top of the telescopic plate 25. One end of the round rod 26 slides on the inner wall of the L-shaped block 28. A first spring 27 is provided at the top of the telescopic plate 25. The upper and lower ends of the first spring 27 are fixedly connected to one side of the L-shaped block 28 and the top of the telescopic plate 25, respectively. A conical block 29 is fixedly connected to the top of the round rod 26, and the... A support rod 211 is provided on one side of the outer surface of the groove rod 23. A ball block 212 is fixedly connected to one end of the support rod 211. A servo motor 21 is provided on one end of the machine body 1. An eccentric shaft 22 is installed at the output end of the servo motor 21 via a coupling. A connecting rod 210 is rotatably connected to the end of the eccentric shaft 22 away from the servo motor 21. The end of the connecting rod 210 away from the eccentric shaft 22 is rotatably connected to the top of the slide plate 24. By setting the slide plate 24, when using the screening device, after the plastic particles are added to the outer surface of the uppermost mesh frame 5, the servo motor 21 can be operated. The servo motor 21 drives the eccentric shaft 22 to rotate in the direction of the servo motor 21's output end. One end of the connecting rod 210 rotates at one end, causing the connecting rod 210 to pull the slide plate 24 towards the servo motor 21. At the same time, the connecting rod 210 rotates at the top of the slide plate 24. The two ends of the slide plate 24 slide on the inner walls of the two groove rods 23. When the conical block 29 at the top of the round rod 26 enters one side of the ball block 212, it is blocked by the ball block 212 and pushes the conical block 29 and the round rod 26 to make the telescopic plate 25 slide downward on the inner wall of the slide plate 24 and stretch the first spring 27, causing the telescopic plate 25 to descend. When the eccentric shaft 22 moves away from the servo motor 21, the connecting rod 210 will push the slide plate 24 to move in the original direction. After the conical block 29 moves away from the ball block 212, the stretched first spring 27 returns to its original state and pulls the telescopic plate 25 upward. The slide plate 24 is inserted into the servo motor 21, which drives the eccentric shaft to rotate, controlling the slide plate 24 to move back and forth above the screen frame 5. When the slide plate 24 approaches the servo motor 21, the telescopic plate 25 extends, pushing some of the plastic particles on the screen frame 5 towards the servo motor 21, thus increasing the screening time of the plastic particles on the screen frame 5. By setting a buffer device 2 and installing a telescopic plate 25 at the top of the machine body 1, the servo motor 21 drives the eccentric shaft 22 to rotate, pulling the slide plate 24 back and forth. When the slide plate 24 approaches the servo motor 21, the telescopic plate 25 extends, pushing some of the plastic particles on the screen frame 5 towards the servo motor 21, thus increasing the screening time of the plastic particles on the screen frame 5.This improves the screening effect of the screening device.

[0032] Reference Figure 2-6 As shown in this embodiment: the top of the conical block 29 is provided with an arc-shaped groove 213. The inner walls of the arc-shaped groove 213 are arc-shaped on both sides. When the conical block 29 contacts the ball block 212, the ball block 212 will enter the arc-shaped groove 213 at the top of the conical block 29, making the conical block 29 more stable when it moves at the bottom of the ball block 212. One end of the inner wall of the groove rod 23 is rotatably connected to a screw 214. The outer surface of the screw 214 is threaded to the bottom of the inner wall of the support rod 211. The bottom end of the support rod 211 slides on the inner wall of the groove rod 23. Rotating the screw 214 can control the bottom end of the support rod 211 to slide on the inner wall of the groove rod 23, controlling the movement position of the support rod 211, which is convenient for adjusting the distance between the conical block 29 and the ball block 212 to control the lifting height of the telescopic plate 25.

[0033] Reference Figure 2-6 As shown in this embodiment: the inner diameter of the first spring 27 is larger than the diameter of the round rod 26. The first spring 27 is sleeved on the outside of the round rod 26. When the first spring 27 is stretched, it will move on the outside of the round rod 26. The round rod 26 can stabilize the internal shape of the first spring 27, preventing the first spring 27 from deflecting and causing uneven force on the left and right ends of the telescopic plate 25, which would affect normal use. The bottom end of the conical block 29 is fixedly connected to a diagonal rod 215. The end of the diagonal rod 215 away from the conical block 29 is fixedly connected to one side of the round rod 26. By setting the diagonal rod 215, the connection between the conical block 29 and the round rod 26 can be reinforced and supported, improving the stability of the connection structure between the conical block 29 and the round rod 26.

[0034] Reference Figure 2-6 As shown in this embodiment: a support ring 216 is fixedly connected to one side of the top of the machine body 1. The bottom end of the connecting rod 210 near the eccentric shaft 22 slides on the top of the support ring 216. When the servo motor 21 drives the eccentric shaft 22 and the connecting rod 210 to rotate, the bottom end of the connecting rod 210 near the eccentric shaft 22 will slide on the top of the support ring 216. The support ring 216 can support the bottom end of the connecting rod 210, increasing the stability of the connecting rod 210 when swinging. An auxiliary rod 217 is fixedly connected to the bottom end of the telescopic plate 25. The bottom edge of the auxiliary rod 217 is arc-shaped. By setting the auxiliary rod 217, when the telescopic plate 25 moves downward to fit with the screen on the outer surface of the mesh frame 5, the edge is less likely to squeeze and deform the plastic particles, causing the plastic particles to adhere to the bottom end of the telescopic plate 25.

[0035] Working principle: When using the vibrating screen, the plastic granules to be screened are poured into the screen frame 5 located at the top of the machine body 1. The two vibrating motors 7 at the bottom of the machine body 1 drive the machine body 1 to vibrate, causing the plastic granules to move on the outer surface of the screen frame 5 towards the discharge chute 6. The servo motor 21 is activated, which drives the eccentric shaft 22 to rotate following the output end of the servo motor 21. When the eccentric shaft 22 rotates in the direction of the servo motor 21, one end of it will rotate at one end of the connecting rod 210, which will drive the connecting rod 210 to pull the slide plate 24 in the direction of the servo motor 21. At the same time, the connecting rod 210 will rotate at the top of the slide plate 24. The two ends of the slide plate 24 will slide on the inner wall of the two groove rods 23. When the conical block 29 at the top of the round rod 26 enters one side of the ball block 212, it will be blocked by the ball block 212 and push the conical block 29 and the round rod 26, causing the telescopic plate 25 to slide downward on the inner wall of the slide plate 24 and stretch the first spring 2. 7. When the telescopic plate 25 is lowered and the eccentric shaft 22 moves away from the servo motor 21, the connecting rod 210 will push the slide plate 24 to move in the original direction. The first spring 27, which was stretched after the cone block 29 moved away from the ball block 212, will return to its original state and pull the telescopic plate 25 upward into the slide plate 24. This allows the servo motor 21 to drive the eccentric shaft to rotate, controlling the slide plate 24 to move back and forth above the screen frame 5. When the slide plate 24 is close to the servo motor 21, the telescopic plate 25 extends. The telescopic plate 25 pushes some of the plastic particles on the screen frame 5 towards the servo motor 21, increasing the screening time of the plastic particles on the screen frame 5. Particles smaller than the filter screen holes on the outer surface of the screen frame 5 will enter the outer surface of the next screen frame 5, and finally reach the bottom of the inner wall of the machine body 1. With the vibration of the machine body 1, the screened plastic particles will enter the three discharge troughs 6 and be output in different directions.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A plastic granule screening device, comprising a frame (3), characterized in that: The top of the frame (3) is provided with several spring seats (4), and the bottom of the machine body (1) is connected to the frame (3) through the spring seats (4). Several mesh frames (5) are installed inside the machine body (1), and a screen is provided on the outer surface of the mesh frame (5). Two vibrating motors (7) are provided at the bottom of the machine body (1). Several discharge troughs (6) are provided at one end of the machine body (1). The discharge troughs (6) are oriented differently at the end away from the machine body (1). A buffer device (2) is provided at the top of the machine body (1) to buffer the plastic particles moving on the screen on the surface of the mesh frame (5).

2. The plastic granule screening device according to claim 1, characterized in that: The buffer device (2) includes two grooved rods (23) and a sliding plate (24). The bottom ends of the two grooved rods (23) are fixedly connected to the top sides of the body (1). The two ends of the sliding plate (24) slide on the inner walls of the two grooved rods (23). A telescopic plate (25) is slidably connected to the inner wall of the sliding plate (24). L-shaped blocks (28) are fixedly connected to the top sides of the sliding plate (24). A round rod (26) is fixedly connected to the top of the telescopic plate (25). One end of the round rod (26) slides on the inner wall of the L-shaped block (28). A first spring (27) is provided at the top of the telescopic plate (25). The upper and lower ends of the first spring (27) are respectively connected to the inner wall of the body (1). One side of the L-shaped block (28) is fixedly connected to the top of the telescopic plate (25). The top of the round rod (26) is fixedly connected to the conical block (29). A support rod (211) is provided on one side of the outer surface of the grooved rod (23). A ball block (212) is fixedly connected to one side of the top of the support rod (211). A servo motor (21) is provided on one side of the top of the body (1). An eccentric shaft (22) is installed at the output end of the servo motor (21) through a coupling. A connecting rod (210) is rotatably connected to the end of the eccentric shaft (22) away from the servo motor (21). The end of the connecting rod (210) away from the eccentric shaft (22) is rotatably connected to the top of the slide plate (24).

3. The plastic granule screening device according to claim 2, characterized in that: The top of the conical block (29) is provided with an arc-shaped groove (213), and the inner walls of the arc-shaped groove (213) are arc-shaped on both sides.

4. The plastic granule screening device according to claim 2, characterized in that: One end of the inner wall of the groove rod (23) is rotatably connected to a screw rod (214). The outer surface of the screw rod (214) is threadedly connected to the bottom end of the inner wall of the support rod (211). The bottom end of the support rod (211) slides on the inner wall of the groove rod (23).

5. A plastic granule screening device according to claim 2, characterized in that: The inner diameter of the first spring (27) is larger than the diameter of the round rod (26), and the first spring (27) is sleeved on the outside of the round rod (26).

6. A plastic granule screening device according to claim 2, characterized in that: The bottom end of the conical block (29) is fixedly connected to a diagonal rod (215), and the end of the diagonal rod (215) away from the conical block (29) is fixedly connected to one side of the round rod (26).

7. A plastic granule screening device according to claim 2, characterized in that: A support ring (216) is fixedly connected to one side of the top of the body (1), and the connecting rod (210) slides on the top of the support ring (216) near the bottom of the eccentric shaft (22).

8. A plastic granule screening device according to claim 2, characterized in that: An auxiliary rod (217) is fixedly connected to the bottom end of the telescopic plate (25), and the bottom edge of the auxiliary rod (217) is arc-shaped.

Images