Impurity removal device for plastic particles

Abstract

The utility model relates to the technical field of plastic particle impurity removal, in particular to a plastic particle impurity removal device which comprises an impurity removal box, a feeding hopper is arranged on one side of the top of the impurity removal box, and long grooves are formed in the upper portion of the side, close to the feeding hopper, of the impurity removal box and the lower portion of the other side of the impurity removal box. A cover plate is arranged on the outer side of the long groove, located on one side of the feeding hopper, of the impurity removal box, a labor-saving opening and closing assembly is arranged on the cover plate, and a limiting assembly for reducing abrasion between the sieve plate and the cover plate is arranged on the sieve plate. Through the arrangement of the opening and closing assembly, when the sieve plate needs to be cleaned, the bolt is screwed out, the limiting of the cover plate is cancelled, the arc-shaped rod is retracted into the arc-shaped barrel through the restoring force of the compression spring between the arc-shaped barrel and the arc-shaped rod, the cover plate can be automatically rotated upwards through the long shaft and the connecting block, and the cover plate does not need to be lifted by one hand of a worker all the time; and a worker can pull out the sieve plate for cleaning only by one hand, so that the operation is more convenient and labor-saving.

Description

Technical Field

[0001] This utility model relates to the field of plastic particle impurity removal technology, specifically a plastic particle impurity removal device. Background Technology

[0002] Plastic granules refer to granular plastics, generally classified into over 200 types, with further subdivisions reaching thousands. Common plastic granules include general-purpose plastics, engineering plastics, and specialty plastics. General-purpose plastics include polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyester, and polyurethane. Engineering plastics include nylon, polytetrafluoroethylene, polyoxymethylene, and polycarbonate. Before use, plastic granules need to be cleaned and screened to remove fine impurities to improve their quality.

[0003] Chinese Utility Model Announcement No. CN220373679U includes a housing. A feed pipe communicating with the interior of the housing is fixedly inserted into the upper end of the housing. An inclined shelf is provided inside the housing. A first opening and a second opening are respectively provided inside the housing. The upwardly inclined end of the shelf extends into the first opening, and the downwardly inclined end passes through the second opening. Elastic support mechanisms are provided in both the first and second openings. Two symmetrically arranged vibrating motors are fixedly connected to the lower end of the shelf. A groove is provided at the upper end of the shelf, and a sieve plate is slidably inserted into the groove. Two symmetrically arranged openings are provided at the bottom of the groove. This utility model, through the arrangement of vibrating motors and a sieve plate, achieves the removal of impurities from plastic particles while allowing the sieve plate to be quickly removed for cleaning, thereby reducing the time required for disassembling and assembling the sieve plate and improving work efficiency.

[0004] The applicant discovered some shortcomings in the use of the patent:

[0005] 1. When opening the cover, the operator needs to pull out the screen plate with one hand while keeping the cover plate up with the other hand. Otherwise, the cover plate will automatically rotate downwards and come into contact with the screen plate when it is pulled out, which will cause wear. It requires two hands to operate, which is not convenient or labor-saving.

[0006] 2. The rubber block and the first pull ring abut against each other to limit the screen plate. However, during the up-and-down vibration of the screen plate, the first pull ring moves up and down, causing friction between it and the rubber block. This makes the rubber block wear very easily, and once worn, it can no longer limit the movement. Therefore, it needs to be replaced frequently, which is not only troublesome but also increases costs.

[0007] Therefore, this utility model designs a plastic particle impurity removal device to solve the problems existing in the prior art. Utility Model Content

[0008] The purpose of this invention is to provide a plastic particle impurity removal device to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a plastic granule impurity removal device, comprising: an impurity removal box, a feeding hopper on one side of the top of the impurity removal box, long grooves on the upper part of the side of the impurity removal box near the feeding hopper and on the lower part of the other side of the impurity removal box, a U-shaped plate between the two long grooves, a sieve plate slidably installed inside the U-shaped plate, vibrators at both ends of the bottom middle of the U-shaped plate, and limiting springs connecting the four bottom corners of the U-shaped plate to the impurity removal box, the four limiting springs being located at the two ends of the two long grooves respectively, a cover plate on the outside of the long groove on the side of the feeding hopper of the impurity removal box, a labor-saving opening and closing component on the cover plate, and a limiting component on the sieve plate to reduce wear between the sieve plate and the cover plate.

[0010] Preferably, the inner walls at both ends of the U-shaped plate are provided with sliding grooves, and both ends of the sieve plate are equipped with sliding strips that are slidably connected to the sliding grooves. The sliding strips are slidably installed in the sliding grooves and can limit the upper and lower positions of the sieve plate.

[0011] Preferably, the opening and closing assembly includes a long shaft rotatably mounted on the outer wall of the impurity removal box. A connecting block is installed in the middle of the outer wall of the long shaft. The bottom of the connecting block is fixedly installed to the top of the cover plate. An arc-shaped cylinder is embedded in the outer wall of the impurity removal box. An arc-shaped rod is slidably installed inside the arc-shaped cylinder. The bottom of the arc-shaped rod is fixedly installed to one side of the cover plate. The top of the arc-shaped rod is connected to the top inner wall of the arc-shaped cylinder by a compression spring. The bottom of the cover plate is installed to the impurity removal box by bolts. When the screen plate needs to be cleaned, the bolts are unscrewed to release the limit on the cover plate. The restoring force of the compression spring between the arc-shaped cylinder and the arc-shaped rod causes the arc-shaped rod to retract into the arc-shaped cylinder. Through the long shaft and the connecting block, the cover plate can be automatically rotated upwards. The operator does not need to keep one hand lifting the cover plate. The operator only needs one hand to operate and pull out the screen plate for cleaning, which is more convenient and labor-saving.

[0012] Preferably, the limiting component includes a U-shaped frame, which is installed on one side of the screen plate. A rotating shaft is rotatably installed between the two ends of the U-shaped frame. A limiting roller is installed in the middle of the outer side wall of the rotating shaft. The limiting roller is rolledly connected to one side of the cover plate. The limiting roller contacts one side of the cover plate, which can limit the screen plate to the left and right. The screen plate vibrates up and down, causing the limiting roller to roll back and forth on one side of the cover plate. The rolling reduces friction and wear.

[0013] Preferably, the bottom inner wall of the impurity removal box is provided with an impurity collection box, which collects the fine impurities that are screened out, making it convenient to handle the impurities uniformly.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, through the setting of the opening and closing component, allows the cover plate to be automatically rotated upwards by unscrewing the bolts when the screen plate needs to be cleaned. The restoring force of the compression spring between the arc-shaped cylinder and the arc-shaped rod causes the arc-shaped rod to retract into the arc-shaped cylinder. Through the long shaft and connecting block, the cover plate can be automatically rotated upwards. The operator does not need to keep one hand lifting the cover plate. The operator only needs one hand to operate and pull out the screen plate for cleaning, which is more convenient and labor-saving.

[0016] 2. By setting up a limiting component, the screen plate vibrates up and down, causing the limiting roller to roll back and forth on one side of the cover plate. The screen plate contacts the limiting roller, which limits the screen plate. At the same time, because it is a rolling connection, the friction is smaller, reducing the wear between the limiting roller and the cover plate, and eliminating the need for frequent replacement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the left sectional view of the present invention;

[0018] Figure 2 This is a right-side sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the U-shaped plate structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the opening and closing component structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the limiting component structure of this utility model.

[0022] In the diagram: 1. Impurity removal box; 2. Feed hopper; 3. Long trough; 4. U-shaped plate; 5. Slide chute; 6. Screen plate; 7. Sliding bar; 8. Vibrator; 9. Limiting spring; 10. Cover plate; 11. Opening and closing assembly; 12. Limiting assembly; 111. Long shaft; 112. Connecting block; 113. Arc cylinder; 114. Arc rod; 115. Bolt; 121. U-shaped frame; 122. Rotating shaft; 123. Limiting roller. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5This utility model provides an embodiment of a plastic particle impurity removal device, comprising: a removal box 1, a feeding hopper 2 on one side of the top of the removal box 1, long grooves 3 on the upper side of the removal box 1 near the feeding hopper 2 and on the lower side of the other side of the removal box 1, a U-shaped plate 4 between the two long grooves 3, a sieve plate 6 slidably installed inside the U-shaped plate 4, vibrators 8 at both ends of the bottom middle of the U-shaped plate 4, and limiting springs 9 connecting the four bottom corners of the U-shaped plate 4 to the removal box 1, the four limiting springs 9 being located at the two ends of the two long grooves 3 respectively, a cover plate 10 on the outside of the long groove 3 on the side of the removal box 1 near the feeding hopper 2, a labor-saving opening and closing component 11 on the cover plate 10, a limiting component 12 on the sieve plate 6 to reduce wear between it and the cover plate 10, and a plastic particle collection box that can be placed below one side of the U-shaped plate to collect plastic particles.

[0025] Please see Figure 3 In this embodiment: the inner walls of both ends of the U-shaped plate 4 are provided with grooves 5, and both ends of the sieve plate 6 are equipped with sliding strips 7 that are slidably connected to the grooves 5.

[0026] Please see Figure 4 In this embodiment: the opening and closing assembly 11 includes a long shaft 111, which is rotatably mounted on the outer wall of the impurity removal box 1. A connecting block 112 is installed in the middle of the outer wall of the long shaft 111. The bottom of the connecting block 112 is fixedly mounted to the top of the cover plate 10. An arc-shaped cylinder 113 is embedded in the outer wall of the impurity removal box 1. An arc-shaped rod 114 is slidably mounted inside the arc-shaped cylinder 113. The bottom of the arc-shaped rod 114 is fixedly mounted to one side of the cover plate 10. The top of the arc-shaped rod 114 is connected to the top inner wall of the arc-shaped cylinder 113 by a compression spring. The bottom of the cover plate 10 is mounted to the impurity removal box 1 by bolts 115. Two brackets are installed on one side of the impurity removal box. The long shaft is rotatably mounted between the two brackets. A fixing block is installed in the middle of the bottom of the cover plate. The bolts and the fixing block are rotatably mounted by threads. A threaded hole is opened on the outer wall of the impurity removal box for rotatable mounting with the bolts.

[0027] Please see Figure 5 In this embodiment: the limiting component 12 includes a U-shaped frame 121, which is installed on one side of the screen plate 6. A rotating shaft 122 is rotatably installed between the two ends of the U-shaped frame 121. A limiting roller 123 is installed in the middle of the outer side wall of the rotating shaft 122. The limiting roller 123 is rolledly connected to one side of the cover plate 10.

[0028] Please see Figure 1 In this embodiment: the bottom inner wall of the impurity removal box 1 is provided with an impurity collection box.

[0029] Working principle: The vibrator 8, when activated, causes the screen plate 6 to vibrate up and down via the limit spring 9. Plastic granules are then poured into the impurity removal box 1 through the feed hopper 2. The granules fall onto the upper side of the screen plate 6 and, through vibration, roll downwards, exiting the impurity removal box 1 through the long groove 3 on one side. As the plastic granules roll down the screen plate 6, fine impurities pass through and separate from the granules, completing the impurity removal process. The limit roller 123 contacts the cover plate 10, and during the up-and-down vibration of the screen plate 6, it acts as a limit, causing the limit roller 123 to roll back and forth on the cover plate 10. The rolling motion reduces friction and wear. When cleaning the screen plate 6 is required, the bolt 115 is unscrewed. The restoring force of the compression spring between the arc rod 114 and the arc cylinder 113 causes the arc rod 114 to retract into the arc cylinder 113. The cover plate 10 automatically rotates upward through the long shaft 111 and the connecting block 112. Moreover, it eliminates the need for the operator to lift the cover plate 10 with one hand, making it more labor-saving. The operator can pull the screen plate 6 out of the U-shaped plate 4 for cleaning by holding the limiting roller 123. The contents not described in detail in this description are existing technologies known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plastic granule impurity removal device, comprising: The impurity removal box (1) is characterized in that: a feed hopper (2) is provided on one side of the top of the impurity removal box (1), and long grooves (3) are provided on the upper side of the side of the impurity removal box (1) near the feed hopper (2) and the lower side of the other side of the impurity removal box (1). A U-shaped plate (4) is provided between the two long grooves (3), and a screen plate (6) is slidably installed in the U-shaped plate (4). Vibrators (8) are provided at both ends of the bottom middle of the U-shaped plate (4). The four bottom corners of the U-shaped plate (4) and the impurity removal box (1) are connected by limiting springs (9). The four limiting springs (9) are respectively located at both ends of the two long grooves (3). A cover plate (10) is provided on the outside of the long groove (3) on the side of the feed hopper (2) of the impurity removal box (1). A labor-saving opening and closing component (11) is provided on the cover plate (10), and a limiting component (12) is provided on the screen plate (6) to reduce wear between it and the cover plate (10).

2. The plastic granule impurity removal device according to claim 1, characterized in that: The inner walls of both ends of the U-shaped plate (4) are provided with sliding grooves (5), and both ends of the sieve plate (6) are equipped with sliding strips (7) that are slidably connected to the sliding grooves (5).

3. The plastic granule impurity removal device according to claim 1, characterized in that: The opening and closing assembly (11) includes a long shaft (111) which is rotatably mounted on the outer side wall of the impurity removal box (1). A connecting block (112) is installed in the middle of the outer side wall of the long shaft (111). The bottom of the connecting block (112) is fixedly installed on the top of the cover plate (10). An arc-shaped cylinder (113) is embedded in the outer side wall of the impurity removal box (1). An arc-shaped rod (114) is slidably installed inside the arc-shaped cylinder (113). The bottom of the arc-shaped rod (114) is fixedly installed on one side of the cover plate (10). The top of the arc-shaped rod (114) is connected to the top inner wall of the arc-shaped cylinder (113) by a compression spring. The bottom of the cover plate (10) is installed on the impurity removal box (1) by bolts (115).

4. The plastic granule impurity removal device according to claim 1, characterized in that: The limiting component (12) includes a U-shaped frame (121), which is installed on one side of the sieve plate (6). A rotating shaft (122) is rotatably installed between the two ends of the U-shaped frame (121). A limiting roller (123) is installed in the middle of the outer side wall of the rotating shaft (122). The limiting roller (123) is tumbledly connected to one side of the cover plate (10).

5. The plastic granule impurity removal device according to claim 1, characterized in that: The bottom inner wall of the impurity removal box (1) is provided with an impurity collection box.

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