A plastic particle screening device

Abstract

The application relates to the technical field of plastic particle screening, in particular to a plastic particle screening device, which is characterized in that a bearing frame is arranged on the inner wall of a rack to bear a screen body, a guide strip on the inner wall of the rack is in sliding cooperation with a guide groove of the bearing frame, a positioning column of the bearing frame is in plug-in cooperation with a positioning hole of the screen body, the screen body is detachably connected, different aperture specifications of the screen body can be quickly replaced to meet more plastic particle screening requirements, a vibration motor is arranged at the bottom of the screen body and fixedly connected with the rack, the flowability of the plastic particles on the feeding channel, the discharging channel and the screen body is enhanced through high-frequency vibration, a rubber sleeve seals and fills the gaps between the screen body, the replacement door and the inner wall of the rack, the probability of the plastic particles escaping from the gaps is reduced, the rack and the rack are connected through springs, vibration impact caused by the vibration motor is effectively absorbed, and the service life of the device is prolonged.

Description

Technical Field

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

[0002] In the plastic granule manufacturing process, the raw material is extruded through a high-temperature extrusion device to form a continuous strip, which is then cooled and shaped. The cooled strip is then conveyed to a pelletizing device for cutting under the combined action of a transmission plate and a pressure roller. Although most granules can be cut to standard size through precise cutting, a small number of granules with abnormal size will still be produced due to factors such as fluctuations in cutting accuracy. These granules may be too small or too large, ultimately resulting in differences in the particle size of the finished granules.

[0003] In related technologies, traditional plastic granule screening devices typically employ a multi-layered screen body with fixed apertures. The screen body is connected to the device by bolts, and the screen body is driven to vibrate by a vibration motor. By utilizing the synergistic effect of the granule gravity and the screen body vibration, granules of different sizes can be separated.

[0004] However, this method has the following drawbacks: due to the processing requirements of plastic granules, it may be necessary to screen plastic shells of different sizes. The aperture of traditional screen bodies is usually relatively fixed, which may not meet the processing requirements. Utility Model Content

[0005] In order to meet the screening needs of more plastic granules, this application provides a plastic granule screening device.

[0006] The plastic granule screening device provided in this application adopts the following technical solution: A plastic granule screening device includes a frame, a feeding assembly, several screen bodies, and a vibrating motor. The feeding assembly is fixedly connected to the frame and includes a feeding channel and a discharging channel. The edges of the several screen bodies are slidably disposed along the length of the inner wall of the frame and connect with the feeding channel and the discharging channel. The screen bodies are detachably connected. The vibrating motor is fixedly connected to the frame and located at the bottom of the screen bodies.

[0007] By adopting the above technical solution, the traditional screen body has a fixed aperture and is fixedly connected to the frame, making it difficult to adapt to the screening needs of plastic granules of different sizes. In this solution, the edge of the screen body slides along the inner wall of the frame, and the screen body is detachably connected, which facilitates the quick replacement of screen bodies with different aperture specifications to meet the screening needs of more plastic granules. At the same time, the vibration motor is located at the bottom of the screen body and fixed to the frame. The high-frequency vibration enhances the flow of plastic granules in the feed channel, discharge channel and screen body, reducing the risk of blockage.

[0008] Preferably, it also includes several supporting components, each supporting component including a support frame, with guide strips arranged horizontally on the inner wall of the frame, the guide strips being fixedly connected to the inner wall of the frame, and guide grooves opened on the side wall of the support frame, the guide strips sliding relative to the guide grooves, and the screen body being supported on the support frame.

[0009] By adopting the above technical solution, the sliding cooperation between the guide groove of the support frame and the guide groove of the side wall of the frame enables the support frame to move flexibly in the horizontal direction. The screen body is supported on the support frame, and the operator can move the screen body to the outside of the frame more conveniently, increasing the operating space and facilitating the quick disassembly and replacement of the screen body in the future.

[0010] Preferably, the side wall of the support frame is provided with a first limiting block, and the inner wall of the frame is provided with a second limiting block. When the support frame slides a certain distance to the outside of the frame, the first limiting block and the second limiting block abut against each other.

[0011] By adopting the above technical solution, when the support frame slides to the preset position, the first limiting block and the second limiting block abut against each other and form a physical block, limiting the further movement range of the support frame. This effectively solves the problem of excessive displacement of the support frame due to external force or vibration during the sliding process, thereby reducing the occurrence of the support frame's guide groove detaching from the guide block.

[0012] Preferably, the supporting component further includes a positioning post arranged in a vertical direction, the positioning post being fixed perpendicularly to the supporting frame, and a positioning hole being provided on the edge where the screen body connects to the supporting frame, the positioning post being inserted into the positioning hole.

[0013] By adopting the above technical solution, positioning columns that are vertically fixed to the support frame are set and inserted into the positioning holes on the edge of the screen body to limit the screen body. Through physical interference, the lateral or longitudinal displacement of the screen body during vibration is reduced, and the screen body is accurately positioned on the support frame. The insertion and connection simplifies the disassembly and assembly process of the screen body and reduces the use of complicated tools.

[0014] Preferably, two guide bars are provided, and the two guide bars are respectively located on the inner wall of the frame near the feeding channel and the discharge channel. Two guide grooves are also provided, and the guide grooves are located on the side walls of the support frame. The two guide bars and the guide grooves slide in cooperation.

[0015] By adopting the above technical solution, two guide strips and two guide grooves of the support frame are fixedly installed on the inner wall of the frame and slide together, and the support frame supports the screen body, thereby improving the stability of the screen body's movement.

[0016] Preferably, the side wall of the frame is provided with a replacement port, the position of which corresponds to the position of the screen body, and the outer wall of the frame is provided with a screen replacement door, which is used to cover the replacement port.

[0017] By adopting the above technical solution, the operator can open the screen replacement door and pull the screen body out of the frame through the support component for replacement. Closing the screen replacement door limits the screen body and reduces the occurrence of the screen body sliding out of the frame.

[0018] Preferably, a rubber sleeve is fixedly provided on the edge of the support frame. The width of the rubber sleeve is greater than the width of the edge of the support frame. The rubber sleeve extends upward along the edge of the support frame for a certain distance. One side wall of the extended portion of the rubber sleeve abuts against the edge of the screen body, and the other side wall of the rubber sleeve abuts against the side wall of the screen replacement door and the inner wall of the frame.

[0019] By adopting the above technical solution, the thickness of the rubber sleeve is greater than the tiny gap between the screen body, the screen replacement door, and the inner wall of the frame. The rubber sleeve undergoes elastic deformation to compress and fit the screen replacement door and the inner wall of the frame, filling the tiny gap between the screen body, the screen replacement door, and the inner wall of the frame. This effectively reduces the amount of plastic particles falling from the gaps under vibration or gravity. The rubber material has resilience, so even with frequent opening and closing of the screen replacement door or vibration during equipment operation, the rubber sleeve can maintain its sealing performance through adaptive elastic deformation.

[0020] Preferably, the device further includes a support frame, on which the frame is supported, and a plurality of springs are provided between the support frame and the frame, with the two ends of the springs abutting against the support frame and the frame respectively.

[0021] By adopting the above technical solution, the spring absorbs the dynamic impact force generated during the operation of the frame through elastic deformation, dispersing the transmission of mechanical vibration to the support frame and the ground, thereby reducing the noise of the plastic granule screening device and the fatigue damage of the components caused by vibration. At the same time, the buffering effect of the spring maintains the floating balance of the frame in the vertical direction, ensuring the stability of the plastic granule screening device during screening. In addition, the spring reduces the direct contact wear between the support frame and the frame, extending the service life of the plastic granule screening device.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting a detachable screen body that slides along the inner wall of the frame, it is easy to quickly replace screen bodies with different aperture specifications to meet more processing needs. The vibration motor is located at the bottom of the screen body and fixed to the frame. The high-frequency vibration enhances the flow of plastic granules in the feed channel, discharge channel and screen body, reducing the risk of blockage. 2. Through the sliding cooperation between the guide groove of the support frame and the guide strip of the frame, the screen body can move flexibly in the horizontal direction on the inner wall of the frame. The screen body is supported on the support frame, and the operator can move the screen body to the outside of the frame, which increases the operating space and facilitates the quick disassembly and replacement of the screen body. 3. By setting positioning posts on the support frame and engaging with positioning holes on the edge of the screen body, the screen body is limited. Through physical interference, the lateral or longitudinal displacement of the screen body during vibration is reduced, thus achieving precise positioning of the screen body on the support frame. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0024] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0025] Figure 3 This is a schematic diagram of the structure where the screen replacement door opens.

[0026] Figure 4 Figure 3 Enlarged diagram of part B.

[0027] Figure 5 Figure 3 An enlarged schematic diagram of section C.

[0028] Figure 6 This is a structural diagram of the supporting components, the screen body, and the rubber pad.

[0029] Figure 7 yes Figure 6 An enlarged schematic diagram of part D in the middle.

[0030] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Second connecting block; 12. Guide bar; 13. Replacement port; 14. Second limiting block; 2. Feeding assembly; 21. Feeding channel; 22. Discharge channel; 3. Support frame; 31. First connecting block; 4. Spring; 5. Vibration motor; 6. Screen body; 61. Insertion block; 611. Positioning hole; 7. Bearing assembly; 71. Bearing frame; 711. Guide groove; 712. First limiting block; 72. Positioning post; 8. Screen replacement door; 9. Rubber sleeve. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0032] This application discloses a plastic granule screening device. (Refer to...) Figure 1 A plastic granule screening device includes a frame 1, a support frame 3, a vibration motor 5, and a feeding assembly 2. Specifically, the feeding assembly 2 includes a feeding channel 21 and a discharging channel 22, which are fixedly connected to the frame 1. The vibration motor 5 is fixedly connected to the frame 1 and located at the bottom of the frame 1. The frame 1 is supported on the support frame 3.

[0033] Reference Figure 3 Correspondingly, the plastic granule screening device also includes several screen bodies 6, which are arranged inside the frame 1. The edges of the screen bodies 6 slide along the length of the inner wall of the frame 1 and are connected to the feed channel 21 and the discharge channel 22. The screen bodies 6 are detachably connected. The vibration motor 5 is fixedly connected to the frame 1 and located at the bottom of the screen body 6.

[0034] This demonstrates that the traditional screen body 6 has a fixed aperture and is fixedly connected to the frame 1, making it difficult to adapt to the screening needs of plastic granules of different sizes. In this solution, the edge of the screen body 6 slides along the inner wall of the frame 1, and the screen body 6 is detachable, making it easy to quickly replace screen bodies 6 with different aperture specifications to meet more processing needs. At the same time, the vibration motor 5 is located at the bottom of the screen body 6 and fixed to the frame 1. Through high-frequency vibration, it enhances the flow of plastic granules in the feed channel 21, the discharge channel 22, and the screen body 6, reducing the risk of blockage.

[0035] Reference Figure 2 Furthermore, the support frame 3 is a regular rectangular frame structure. A spring 4 is provided between the frame 1 and the support frame 3. In this embodiment, four springs 4 are provided. A first connecting block 31 is provided at the four corners of the upper surface of the support frame 3, and a second connecting block 11 is provided at the four corners of the lower surface of the frame 1. The lower end of the spring 4 is sleeved on the first connecting block 31, and the upper end of the spring 4 is sleeved on the second connecting block 11. The side wall of the spring 4 abuts against the outer wall of the first connecting block 31 and the second connecting block 11.

[0036] This demonstrates that the vibrating motor 5 enhances the flowability of plastic granules in the feed channel 21, discharge channel 22, and screen body 6 through high-frequency vibration, reducing the risk of blockage. When the vibrating motor 5 is running, the spring 4 absorbs the dynamic impact force generated by the vibrating motor 5 through elastic deformation, dispersing the transmission of mechanical vibration to the support frame 3 and the ground, thereby reducing the noise of the plastic granule screening device and the fatigue damage of components caused by vibration. At the same time, the buffering effect of the spring 4 maintains the floating balance of the frame 1 in the vertical direction, ensuring the stability of the plastic granule screening device during screening. In addition, the spring 4 reduces the direct contact wear between the support frame 3 and the frame 1, extending the service life of the plastic granule screening device.

[0037] Correspondingly, the plastic granule screening device also includes a support component 7. The screen body 6 is set inside the frame 1 through the support component 7. In this embodiment, there are three screen bodies 6 arranged vertically, and the aperture of the screen body 6 decreases from top to bottom.

[0038] Furthermore, the support component 7 is also provided in three sets. The support component 7 includes a support frame 71, on which the screen body 6 is supported. Specifically, the support frame 71 is a frame structure, that is, the upper and lower surfaces of the support frame 71 are open, and the size of the opening area is larger than the area of ​​the mesh layout of the screen body 6, so that when the screen body 6 is supported on the support frame 71, the plastic particles can pass smoothly through the mesh on the screen body 6 through the support frame 71.

[0039] Reference Figure 4 Furthermore, guide grooves 711 are provided on the side walls of both sides of the support frame 71, and guide strips 12 are fixed on the inner walls of both sides of the frame 1 near the feed channel 21 and the discharge channel 22. The external shape of the guide strips 12 matches the internal shape of the guide grooves 711, and the guide strips 12 are slidably disposed in the guide grooves 711 in the horizontal direction.

[0040] This demonstrates that the sliding engagement between the guide groove 711 of the support frame 71 and the guide strip 12 on the side wall of the frame 1 enables the support frame 71 to move flexibly in the horizontal direction. Since the screen body 6 is supported on the support frame 71, the operator can move the screen body 6 outside the frame 1, increasing the operating space and facilitating the subsequent quick disassembly and replacement of the screen body 6. Furthermore, the sliding engagement between the two guide strips 12 fixed to the inner wall of the frame 1 and the two guide grooves 711 of the support frame 71, along with the support frame 71 supporting the screen body 6, enhances the stability of the screen body 6's movement. Reference Figure 5Furthermore, the supporting component 7 also includes positioning posts 72. In this embodiment, four positioning posts 72 are provided. The positioning posts 72 are vertically fixed to the upper surface of the supporting frame 71 in the vertical direction. Insertion blocks 61 are fixed to the edges of the four corners of the screen body 6. Positioning holes 611 are opened on the insertion blocks 61. The positioning holes 611 penetrate the upper and lower surfaces of the insertion blocks 61. After the positioning holes 611 are inserted and engaged with the positioning posts 72, the upper surface of the positioning posts 72 is parallel to the upper surface of the insertion blocks 61. The two sides of the screen body 6 away from the feed channel 21 and the discharge channel 22 are flush with the edge of the supporting frame 71.

[0041] This demonstrates that by setting a positioning post 72 that is vertically fixed to the support frame 71 and engaging with the positioning hole 611 on the edge of the screen body 6, the screen body 6 is limited. Through physical interference, the lateral or longitudinal displacement of the screen body 6 during vibration is reduced, and the screen body 6 is accurately positioned on the support frame 71. The engagement simplifies the disassembly and assembly process of the screen body 6 and reduces the use of complex tools.

[0042] On the other hand, the side wall of the frame 1 is provided with a replacement port 13. The screen body 6 is slidably engaged with the guide block through the support frame 71. The screen body 6 can be replaced by sliding through the replacement port 13 to the outside of the frame 1. The outer wall of the frame 1 is provided with a screen replacement door 8, which is used to cover the replacement port 13. The rotation shaft of the screen replacement door 8 is located on the upper edge. The upper edge of the screen replacement door 8 is hinged to the upper edge of the replacement port 13. After the screen body 6 is replaced, it is pushed into the frame 1 and the screen replacement door 8 is closed to limit the screen body 6, reducing the occurrence of the screen body 6 sliding to the outside of the frame 1.

[0043] Reference Figure 6 and Figure 7 In addition, a first limiting block 712 is vertically fixed on the upper surface of the support frame 71 away from the replacement port 13, and a second limiting block 14 is provided on the inner wall of the frame 1 near the replacement port 13. The first limiting block 712 and the second limiting block 14 are parallel to each other. After the support frame 71 slides a certain distance towards the replacement port 13, the first limiting block 712 and the second limiting block 14 abut against each other, thereby forming a physical block between the first limiting block 712 and the second limiting block 14, limiting the further movement range of the support frame 71. This effectively solves the problem of excessive displacement of the support frame 71 due to external force or vibration during the sliding process, thereby reducing the occurrence of the guide groove 711 of the support frame 71 detaching from the guide block.

[0044] On the other hand, rubber sleeves 9 are fixedly provided on the edges of the support frame 71 near the replacement port 13 and away from the replacement port 13. The width of the rubber sleeve 9 is greater than the width of the edge of the support frame 71, so that the rubber sleeve 9 extends upward along the edge of the support frame 71 for a certain distance. When the screen body 6 is connected to the support frame 71, the extended part of the rubber sleeve 9 can cover the edge of the screen body 6. One side wall of the extended part of the rubber sleeve 9 abuts against the edge side wall of the screen body 6. The thickness of the rubber sleeve 9 is greater than the small gap between the screen body 6, the screen replacement door 8, and the inner wall of the frame 1. The side wall of the rubber sleeve 9 abuts against the side wall of the screen replacement door 8 and the inner wall of the frame 1.

[0045] This explains that because the thickness of the rubber sleeve 9 is greater than the tiny gap between the screen body 6, the screen replacement door 8, and the inner wall of the frame 1, when the screen replacement door 8 is closed, the rubber sleeve 9 undergoes elastic deformation to compress and adhere to the screen replacement door 8 and the inner wall of the frame 1, filling the tiny gap between the screen body 6, the screen replacement door 8, and the inner wall of the frame 1. This effectively reduces the leakage of plastic particles from the gaps under vibration or gravity. The rubber material has resilience, so even with frequent opening and closing of the screen replacement door 8 or vibration during equipment operation, the rubber sleeve 9 can maintain its sealing performance through adaptive elastic deformation.

[0046] The implementation principle of a plastic granule screening device according to an embodiment of this application is as follows: A plastic granule screening device includes a frame, a support frame, a vibrating motor, and a feeding assembly. Specifically, the feeding assembly includes an infeed channel and an outlet channel, which are fixedly connected to the frame. The vibrating motor is fixedly connected to the frame and located at the bottom of the frame, and the frame is supported on the support frame.

[0047] Correspondingly, the plastic granule screening device also includes several screen bodies and a support assembly. The screen bodies are set inside the frame via the support assembly, which includes a support frame and positioning posts. The support frame has guide grooves on both sides, and guide strips are provided on the inner wall of the frame. The support frame of the support assembly slides and engages with the guide strips on the inner wall of the frame through the guide grooves on both sides, enabling the support frame to slide horizontally along the side wall of the frame. At the same time, the positioning posts are vertically fixed to the upper surface of the support frame. The screen edge is provided with positioning holes. The screen body is precisely positioned by inserting the positioning posts into the positioning holes, reducing displacement during vibration. The insertion and engagement simplifies the disassembly and assembly process of the screen body and reduces the use of complex tools. Since the support frame slides horizontally along the side wall of the frame, the screen body can also slide horizontally along the side wall of the frame. The operator can slide the screen body and the support assembly together to the outside through the replacement port on the side wall of the frame, realizing the quick replacement of screens with different aperture specifications to meet the screening needs of different plastic granules.

[0048] The vibratory motor is fixedly connected to the frame and located at the bottom of the frame. It enhances the flowability of plastic granules in the feed channel, discharge channel and screen through high-frequency vibration, reducing the risk of blockage. At the same time, the frame is connected to the support frame through springs. The springs absorb the dynamic impact force generated by the vibratory motor through elastic deformation, reducing noise and component fatigue damage, maintaining the vertical floating balance of the frame and extending the service life of the equipment.

[0049] The side wall of the frame is equipped with a replacement port. The screen body is slidably engaged with the support frame and guide block, allowing it to slide out of the frame through the replacement port for replacement. The outer wall of the frame is equipped with a screen replacement door to cover the replacement port. The rotation shaft of the screen replacement door is located on its upper edge, and the upper edge of the door is hinged to the upper edge of the replacement port. After replacement, the screen body is pushed into the frame, and the screen replacement door is closed to limit its movement, reducing the possibility of the screen body sliding out of the frame. The rubber sleeve covers the edge of the support frame and abuts against the side wall of the screen. The thickness of the rubber sleeve is greater than the tiny gap between the screen body, the screen replacement door, and the inner wall of the frame. The rubber sleeve undergoes elastic deformation and compresses to fit the screen replacement door and the inner wall of the frame, filling the tiny gap between the screen body, the screen replacement door, and the inner wall of the frame, effectively reducing the amount of plastic granules falling down from the gaps under vibration or gravity.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A plastic granule screening device, comprising a frame (1), characterized in that, It also includes a feeding assembly (2), several screen bodies (6) and a vibration motor (5). The feeding assembly (2) is fixedly connected to the frame (1). The feeding assembly (2) includes a feeding channel (21) and a discharging channel (22). The edges of several screen bodies (6) are slidably arranged along the length of the inner wall of the frame (1) and connected to the feeding channel (21) and the discharging channel (22). The screen bodies (6) are detachably connected. The vibration motor (5) is fixedly connected to the frame (1) and located at the bottom of the screen bodies (6).

2. The plastic granule screening device according to claim 1, characterized in that, It also includes several supporting components (7), each supporting component (7) including a supporting frame (71), a guide strip (12) is provided on the inner wall of the frame (1) in the horizontal direction, the guide strip (12) is fixedly connected to the inner wall of the frame (1), a guide groove (711) is provided on the side wall of the supporting frame (71), the guide strip (12) slides relative to the guide groove (711), and the screen body (6) is supported on the supporting frame (71).

3. The plastic granule screening device according to claim 2, characterized in that, The side wall of the support frame (71) is provided with a first limiting block (712), and the inner wall of the frame (1) is provided with a second limiting block (14). When the support frame (71) slides a certain distance to the outside of the frame (1), the first limiting block (712) and the second limiting block (14) abut against each other.

4. The plastic granule screening device according to claim 2, characterized in that, The supporting component (7) further includes a positioning post (72) arranged in a vertical direction. The positioning post (72) is vertically fixed to the supporting frame (71). The edge of the screen body (6) connected to the supporting frame (71) is provided with a positioning hole (611). The positioning post (72) is inserted into the positioning hole (611).

5. A plastic granule screening device according to claim 2, characterized in that, Two guide bars (12) are provided, and the two guide bars (12) are respectively located on the inner wall of the frame (1) near the feed channel (21) and the discharge channel (22). Two guide grooves (711) are also provided, and the guide grooves (711) are located on the side walls of the support frame (71). The two guide bars (12) and the guide grooves (711) slide together.

6. A plastic granule screening device according to claim 2, characterized in that, The side wall of the frame (1) is provided with a replacement port (13), the position of the replacement port (13) corresponds to the position of the screen body (6), and the outer wall of the frame (1) is provided with a screen replacement door (8), which is used to cover the replacement port (13).

7. A plastic granule screening device according to claim 6, characterized in that, A rubber sleeve (9) is fixedly provided on the edge of the support frame (71). The width of the rubber sleeve (9) is greater than the width of the edge of the support frame (71). The rubber sleeve (9) extends upward along the edge of the support frame (71) for a certain distance. One side wall of the extended portion of the rubber sleeve (9) abuts against the edge of the screen body (6), and the other side wall of the rubber sleeve (9) abuts against the side wall of the screen replacement door (8) and the inner wall of the frame (1).

8. The plastic granule screening device according to claim 1, characterized in that, It also includes a support frame (3), on which the frame (1) is supported. Several springs (4) are provided between the support frame (3) and the frame (1), and the two ends of the springs (4) abut against the support frame (3) and the frame (1) respectively.

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