Polyethylene master batch particle screening device

Abstract

The utility model discloses a polyethylene master batch particle screening device, and particularly relates to the technical field of screening, the polyethylene master batch particle screening device comprises a main body frame, a vibration driving mechanism is arranged in the main body frame, the vibration driving mechanism is provided with at least two groups of screening mechanisms which are vertically distributed and mutually cooperated, and meshes of the plurality of groups of screening mechanisms are sequentially reduced from top to bottom; each screening mechanism comprises a screening hopper driven by the vibration driving mechanism and a dredging brush connected with the main body frame, a screening net is fixedly installed in an inner cavity of the screening hopper, bristles of the dredging brush which are coaxial are inserted into meshes of each screening net, the bottom of each bristle is provided with an annular protrusion matched with the meshes of the corresponding screening net, and the screening hopper and the dredging brush are arranged on the main body frame. When the screen is lowered to the lowest position, the upper surface of the annular protrusion is flush with the upper surface of the screen, the screen hopper is provided with a horizontal outlet located above the screen and a vertical outlet located below the screen, and according to the polyethylene master batch particle screening device, impurities generated when polyethylene master batch particles are used are reduced, and it is guaranteed that the performance of plastic products is uniform.

Description

Technical Field

[0001] The utility model belongs to the technical field of screening, and in particular relates to a polyethylene masterbatch particle screening device. Background Art

[0002] Polyethylene masterbatch is a widely used auxiliary material in the plastics processing industry, primarily used to improve the physical and processing properties of plastic products or impart specific functions. Polyethylene masterbatch is typically a concentrated material made from polyethylene (PE) as a carrier resin, with various functional additives or fillers added through a specialized process.

[0003] Polyethylene masterbatch pellets produce varying amounts of debris during production, and may be mixed with dust and other impurities during storage. If used directly in the production of plastic products, this may lead to inconsistent performance of the plastic products. Therefore, a new polyethylene masterbatch particle screening device is needed. Utility Model Content

[0004] In order to solve the above problems, the utility model discloses a polyethylene masterbatch particle screening device.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present utility model is as follows:

[0006] A polyethylene masterbatch particle screening device comprises a main frame, a vibration drive mechanism is installed inside the main frame, the vibration drive mechanism is installed with at least two groups of vertically distributed and mutually coordinated screening mechanisms, the mesh openings of several groups of screening mechanisms decrease in sequence from top to bottom; each group of the screening mechanisms comprises: a screen bucket driven by the vibration drive mechanism, a dredging brush connected to the main frame, a screen is fixedly installed in the inner cavity of the screen bucket, and a coaxial dredging brush bristle is inserted into the mesh openings of each screen, the bottom of each of the bristles is provided with an annular protrusion adapted to the mesh opening of the screen, and the upper surface of the annular protrusion is flush with the upper surface of the screen when the screen drops to the lowest point, and the screen bucket is provided with a horizontal outlet above the screen and a vertical outlet below the screen.

[0007] As a preferred technical solution of the present utility model, the vibration drive mechanism includes: a bidirectional output motor fixedly mounted on the bottom of the main frame, a drive disk fixedly sleeved on both ends of the output shaft of the bidirectional output motor, the eccentric column of each drive disk is rotatably connected to a connecting rod, and each connecting rod is rotatably connected to a lifting rod, and slides are fixedly connected on both sides of the top of the main frame, and each slide is slidably inserted into the vertical lifting rod.

[0008] As an optimal technical solution of the present invention, a connecting seat is extended laterally on both sides of each screen bucket, and the connecting seat is threadedly connected to a mounting bolt that passes through the lifting rod. The lifting rod is provided with a plurality of through holes adapted for the mounting bolts and a plurality of transverse protrusions that support the connecting seat.

[0009] As a preferred technical solution of the present invention, the diameter of the annular protrusion is smaller than the diameter of the adapted screen mesh.

[0010] As a preferred technical solution of the present invention, a feeding hopper is fixedly installed on the top of the main frame, and the flexible bottom outlet of the feeding hopper extends into the opening on the top of the screen bucket that is not covered by the dredging brush.

[0011] As a preferred technical solution of the present invention, a flexible tube is extended downward from the vertical outlet of the screen bucket.

[0012] As a preferred technical solution of the present invention, the mesh openings of the screen decrease in size from top to bottom.

[0013] The beneficial effects of the utility model are:

[0014] 1. An appropriate number of screening mechanisms can be installed on the vibration drive mechanism as needed. If there are two screening mechanisms, polyethylene masterbatch particles with too large and too small particle sizes and impurities and debris can be screened out. If there are more than two screening mechanisms, the screened polyethylene masterbatch particles can be classified according to particle size. Thanks to the flexible setting of multiple screening mechanisms, impurities in polyethylene masterbatch particles are reduced during use, ensuring uniform performance of plastic products.

[0015] 2. During screening, the polyethylene masterbatch particles flow into the driven screen bucket that vibrates up and down. The polyethylene masterbatch particles that can pass through the mesh of the screen with the bristles inserted flow out through the vertical outlet, and the remaining polyethylene masterbatch particles flow out through the horizontal outlet. When the screen drops to the lowest point, the upper surface of the annular protrusion is flush with the upper surface of the screen, which can push the polyethylene masterbatch particles stuck in the mesh of the screen upward, reducing the probability of the polyethylene masterbatch particles getting stuck and blocking the mesh of the screen, and ensuring the continuous screening ability of the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the embodiment of the utility model without the main frame and the charging hopper;

[0018] Figure 3 This is a schematic structural diagram of the screening mechanism according to an embodiment of the present utility model;

[0019] Figure 4This is a cross-sectional view of a screening mechanism according to an embodiment of the present invention;

[0020] Figure 5 For the embodiment of the utility model Figure 4 Enlarged view of point A in the middle.

[0021] List of Figure Symbols:

[0022] 1. Main frame;

[0023] 2. Vibration drive mechanism; 21. Bidirectional output motor; 22. Drive plate; 23. Connecting rod; 24. Lifting rod; 25. Sliding seat;

[0024] 3. Screening mechanism; 31. Screen bucket; 311. Vertical outlet; 312. Horizontal outlet; 32. Screen; 33. Unclogging brush; 331. Bristles; 332. Annular protrusion; 34. Connecting seat; 35. Mounting bolts; 36. Flexible tube;

[0025] 4. Feeding hopper. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0027] See also Figure 1-5 A polyethylene masterbatch particle screening device includes a main frame 1, within which a vibration drive mechanism 2 is installed. The vibration drive mechanism 2 is equipped with at least two sets of vertically distributed and mutually coordinated screening mechanisms 3. If there are two sets of screening mechanisms 3, the top screening mechanism 3 screens out polyethylene masterbatch particles with excessive particle sizes, while the bottom screening mechanism 3 screens out polyethylene masterbatch particles with acceptable particle sizes and those with undersized particle sizes. If there are more than two sets of screening mechanisms 3, the top screening mechanism 3 screens out polyethylene masterbatch particles with excessive particle sizes, while the remaining sets of screening mechanisms 3 screen out high-density polyethylene masterbatch particles with different particle sizes. The polyethylene masterbatch particles screened by the screening mechanisms 3 all flow out from the horizontal outlet 312 of the sieve hopper 31. The bottom outlet of the sieve hopper 31 at the bottom separates dust and debris. The mesh size of the multiple sets of screening mechanisms 3 decreases from top to bottom, specifically, the mesh size of the screen 32 decreases from top to bottom.

[0028] The vibration drive mechanism 2 comprises a bidirectional output motor 21 fixedly mounted at the bottom of the main frame 1. A drive disc 22 is fixedly mounted on each end of the output shaft of the bidirectional output motor 21. The eccentric column of each drive disc 22 is rotatably connected to a connecting rod 23, and each connecting rod 23 is rotatably connected to a lifting rod 24. Sliders 25 are fixedly connected to each side of the top of the main frame 1, and each slide 25 slides into a vertical lifting rod 24. When the bidirectional output motor 21 rotates, the rotating drive discs 22 drive the lifting rods 24 to rise and fall synchronously via the connecting rods 23, thereby driving the sieve buckets 31 to vibrate and screen upward and downward. Connecting seats 34 extend laterally from either side of each sieve bucket 31, and are threadedly connected to mounting bolts 35 that extend through the lifting rods 24. The lifting rods 24 are provided with several through-holes for the mounting bolts 35 and several transverse protrusions that support the connecting seats 34. The appropriate number of sieve buckets 31 can be installed according to actual screening needs.

[0029] Each screening mechanism 3 comprises a sieve hopper 31 driven by a vibrating drive mechanism 2 and a dredging brush 33 connected to the main frame 1. A sieve 32 is fixedly mounted within the sieve hopper 31, and a coaxial bristle 331 of the dredging brush 33 is inserted into each mesh of the sieve 32. The bristles 331 are highly resilient and not easily bent. Each bristle 331 has an annular protrusion 332 at its base that matches the mesh of the sieve 32. The diameter of the annular protrusion 332 is smaller than the diameter of the mesh of the sieve 32. When the sieve 32 reaches its lowest point, the upper surface of the annular protrusion 332 is flush with the upper surface of the sieve 32, thereby ejecting any polyethylene masterbatch particles stuck in the mesh of the sieve 32 upward. The sieve hopper 31 is equipped with a horizontal outlet 312 above the sieve 32 and a vertical outlet 311 below the sieve 32. The inner bottom surface of the horizontal outlet 312 is flush with the top surface of the sieve 32. A flexible tube 36 extends downward from the vertical outlet 311 of the sieve bucket 31. The flexible tube 36 is made of rubber or braided fabric. If a sieve bucket 31 is located below the flexible tube 36, the flexible tube 36 extends into the opening at the top of the sieve bucket 31 not covered by the dredging brush 33, allowing the sieve bucket 31 below to continue screening the polyethylene masterbatch particles.

[0030] A feeding hopper 4 is fixedly mounted on the top of the main frame 1 , and a flexible bottom outlet of the feeding hopper 4 extends into an opening at the top of the screen bucket 31 that is not covered by the dredging brush 33 .

[0031] Working principle:

[0032] During operation, a suitable number of screening mechanisms 3 are installed on the vibration drive mechanism 2 as needed, and then the bidirectional output motor 21 drives the two drive discs 22 to rotate. The two rotating drive discs 22 respectively drive the two lifting rods 24 to synchronously reciprocate and lift through the two connecting rods 23, thereby driving the screen bucket 31 to vibrate and screen up and down. Then, polyethylene masterbatch particles are poured into the feeding hopper 4, and the polyethylene masterbatch particles are screened from top to bottom through several groups of screening mechanisms 3. Since the mesh size of the screen 32 decreases from top to bottom, the diameter of the polyethylene masterbatch particles flowing out from the horizontal outlet 312 from top to bottom decreases, thereby achieving polyethylene masterbatch particle classification;

[0033] During screening, the polyethylene masterbatch particles flow into the driven screen bucket 31 that vibrates up and down, among which the polyethylene masterbatch particles that can pass through the mesh of the screen 32 with the bristles 331 inserted flow out through the vertical outlet 311, and the remaining polyethylene masterbatch particles flow out through the horizontal outlet 312. When the screen 32 drops to the lowest point, the upper surface of the annular protrusion 332 is flush with the upper surface of the screen 32, which is used to push the polyethylene masterbatch particles stuck in the mesh of the screen 32 upward.

[0034] It should be noted that the above content only illustrates the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, they can make several improvements and modifications without departing from the principles of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. A polyethylene masterbatch particle screening device, comprising a main frame (1), characterized in that: A vibration drive mechanism (2) is installed inside the main frame (1), and the vibration drive mechanism (2) is installed with at least two groups of vertically distributed and mutually coordinated screening mechanisms (3), and the meshes of the screening mechanisms (3) of the groups decrease from top to bottom; each group of the screening mechanisms (3) comprises: a screening bucket (31) driven by the vibration drive mechanism (2), and a dredging brush (33) connected to the main frame (1), and a screen (32) is fixedly installed in the inner cavity of the screening bucket (31), and each of the screens ( The meshes of the screen (32) are each inserted with bristles (331) of a coaxial dredging brush (33), and the bottom of each bristle (331) is provided with an annular protrusion (332) adapted to the mesh of the screen (32), and when the screen (32) is lowered to the lowest point, the upper surface of the annular protrusion (332) is flush with the upper surface of the screen (32), and the screen bucket (31) is provided with a horizontal outlet (312) above the screen (32) and a vertical outlet (311) below the screen (32).

2. A polyethylene masterbatch particle screening device according to claim 1, characterized in that: The vibration drive mechanism (2) comprises: a bidirectional output motor (21) fixedly mounted on the bottom of the main frame (1); a drive disk (22) is fixedly sleeved on both ends of the output shaft of the bidirectional output motor (21); the eccentric column of each drive disk (22) is rotatably connected to a connecting rod (23), and each connecting rod (23) is rotatably connected to a lifting rod (24); slides (25) are fixedly connected to both sides of the top of the main frame (1), and each slide (25) is slidably inserted into the vertical lifting rod (24).

3. A polyethylene masterbatch particle screening device according to claim 2, characterized in that: A connecting seat (34) is laterally extended on both sides of each sieve bucket (31), and the connecting seat (34) is threadedly connected to a mounting bolt (35) that passes through the lifting rod (24). The lifting rod (24) is provided with a plurality of through holes adapted to fit the mounting bolts (35) and a plurality of transverse protrusions that support the connecting seat (34).

4. The polyethylene masterbatch particle screening device according to claim 1, characterized in that: The diameter of the annular protrusion (332) is smaller than the mesh diameter of the adapted screen (32).

5. The polyethylene masterbatch particle screening device according to claim 1, characterized in that: A feeding hopper (4) is fixedly mounted on the top of the main frame (1), and a flexible bottom outlet of the feeding hopper (4) extends into an opening at the top of the sieve bucket (31) that is not covered by the dredging brush (33).

6. The polyethylene masterbatch particle screening device according to claim 1, characterized in that: A flexible tube (36) extends downward from the vertical outlet (311) of the screen bucket (31).

7. The polyethylene masterbatch particle screening device according to claim 1, characterized in that: The mesh openings of the screen (32) decrease from top to bottom.

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