Multi-stage screening device for plastic particles

Abstract

The utility model provides a multi-stage plastic particle screening device, which relates to the technical field of plastic particle screening and comprises a fixing frame and a screening frame, and first mounting blocks are symmetrically and fixedly connected to the outer surfaces of the two sides of the screening frame respectively. According to the plastic particle screening device, when the plastic particle screening device is used, plastic particles to be screened are poured into the limiting frame for preliminary screening, and after the fine plastic particles can be discharged from the fine filter holes, the limiting frame is dragged by the multi-stage electric telescopic rod to move on the surfaces of the filter plates; the plastic particles in the limiting frame can sequentially stay on the surfaces of the second filter plate and the third filter plate to be fully screened, the screened plastic particles are effectively prevented from being mixed, and the problem that in the background technology, when the plastic particles roll on the surface of the slope type multi-stage filter screen, part of the plastic particles do not pass through the corresponding filter screen in time to fall off, and the screening efficiency is improved is solved. Therefore, more fine plastic particles are mixed in large-diameter plastic particles screened by a follow-up coarse-mesh filter screen, and the screening effect is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic particle screening, in particular to a multi-stage screening device for plastic particles. Background Art

[0002] Plastic is a high molecular compound made from monomers through addition or condensation reactions. It is commonly known as resin. It can freely change its composition and shape. It is composed of synthetic resin and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants.

[0003] In the prior art, such as Chinese patent CN220593725U, a vibrating multi-stage screening device for plastic particles is disclosed. The device comprises a box body, a feed port is provided at the top of the box body near the front, and materials are added through the feed port. The first screen plate, the second screen plate, and the third screen plate are driven to vibrate by starting a vibration motor, and the materials are screened in order of increasing size from top to bottom. A connecting cloth is provided to prevent the materials from falling through the gaps between the screen plates. A slider is provided to slide on the inner wall of a rectangular frame and supported by the tension of a spring, so that the elasticity of the spring can increase the vibration amplitude of the screen plate to improve the screening effect.

[0004] In the above patent, the first sieve plate, the second sieve plate and the third sieve plate are driven to vibrate by a vibration motor, and multiple sieve plates form a sloped whole, which screens the material in increasing order from top to bottom, and has a good screening effect. However, when the plastic particles roll on the surface of the sloped multi-stage filter, it is easy for some plastic particles to fail to pass through the corresponding screen in time and fall due to the large feed amount or the fast movement speed of the plastic particles on the screen, which leads to the large diameter plastic particles screened by the subsequent coarse-pore filter being often mixed with more fine plastic particles, affecting the screening effect. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that when plastic particles roll on the surface of a sloped multi-stage filter, some plastic particles fail to pass through the corresponding screen in time and fall due to a large feed amount or too fast movement speed of the plastic particles on the screen, which leads to the large-diameter plastic particles screened by the subsequent coarse-pore filter being often mixed with a large number of fine plastic particles, thereby affecting the screening effect. A multi-stage screening device for plastic particles is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a multi-stage screening device for plastic particles, comprising: a fixed frame and a screening frame, the outer surfaces of both sides of the screening frame are symmetrically fixedly connected with first mounting blocks, and springs are fixedly connected between the bottoms of multiple first mounting blocks and the top of the fixed frame, the rear surface of the screening frame is fixedly connected with a multi-stage electric telescopic rod, the telescopic end of the multi-stage electric telescopic rod is fixedly connected to a limiting assembly; a limiting assembly, the limiting assembly includes a limiting frame, the rear surface of the limiting frame is fixedly connected with a connecting block, and the rear surface of the connecting block is fixedly connected to the telescopic end of the multi-stage electric telescopic rod.

[0007] Preferably, the inner bottom of the screening frame is provided with a first filter plate, a second filter plate and a third filter plate in sequence from front to back, and the outer surface of the limit frame is in contact with the inner surface of the screening frame.

[0008] Preferably, a plurality of fine filter holes are evenly provided on the top of the first filter plate, a plurality of medium filter holes are evenly provided on the top of the second filter plate, and a plurality of coarse filter holes are evenly provided on the top of the third filter plate.

[0009] Preferably, the diameter of the fine filter pores is smaller than that of the medium filter pores, and the diameter of the medium filter pores is smaller than that of the coarse filter pores.

[0010] Preferably, sliders are symmetrically fixedly connected to the outer surfaces of both sides of the limit frame, and sliding grooves are symmetrically opened on both sides of the inner surface of the screening frame, and the sliding grooves are matched with the sliders.

[0011] Preferably, second mounting blocks are fixedly connected to the outer surfaces of both sides of the screening frame, the tops of the two second mounting blocks are fixedly connected to mounting brackets, and the tops of the mounting brackets are fixedly connected to the vibration motor.

[0012] Preferably, a support frame is fixedly connected to the bottom of the fixing frame, and the support frame is connected to the fixing frame.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are:

[0014] 1. In the utility model, when in use, the plastic particles to be screened are poured into the limit frame for preliminary screening, so that the relatively fine plastic particles can be discharged from multiple fine filter holes. The limit frame is dragged by the multi-stage electric telescopic rod to move on the surface of multiple filter plates. The plastic particles in the limit frame will stay on the surface of the second filter plate and the third filter plate in turn for full screening, effectively avoiding the mixing of the screened plastic particles. This solves the problem in the background technology that when plastic particles roll on the sloped multi-stage filter surface, some plastic particles fail to pass through the corresponding screen in time and fall off, which leads to the large-diameter plastic particles screened by the subsequent coarse-pore filter being often mixed with a large number of fine plastic particles, affecting the screening effect.

[0015] 2. In the utility model, when in use, when the limit frame moves in the screening frame, the sliders fixedly connected on both sides will slide along the inner surface of the slide groove, playing a limiting role, preventing the bottom of the limit frame from separating from the surface of multiple filter plates, causing some plastic particles to leak out, and having high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of a multi-stage screening device for plastic particles proposed in the utility model;

[0017] Figure 2 This is a side view of a multi-stage screening device for plastic particles proposed in the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a limiting component of a multi-stage screening device for plastic particles proposed in the utility model;

[0019] Figure 4 The utility model provides a schematic diagram of the screening frame structure of a multi-stage screening device for plastic particles.

[0020] Legend: 1. Fixed frame; 2. Support frame; 3. Screening frame; 4. Limiting assembly; 401. Limiting frame; 402. Slider; 403. Connecting block; 5. First mounting block; 6. Spring; 7. Second mounting block; 8. Mounting frame; 9. Vibrating motor; 10. Multi-stage electric telescopic rod; 11. First filter plate; 12. Second filter plate; 13. Third filter plate; 14. Slide; 15. Fine filter hole; 16. Medium filter hole; 17. Coarse filter hole. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: Figure 1-Figure 4As shown, the utility model provides a multi-stage screening device for plastic particles, comprising: a fixed frame 1 and a screening frame 3, the outer surfaces of both sides of the screening frame 3 are symmetrically fixedly connected with first mounting blocks 5, the bottoms of multiple first mounting blocks 5 are fixedly connected to the top of the fixed frame 1 with springs 6, the rear surface of the screening frame 3 is fixedly connected with a multi-stage electric telescopic rod 10, the telescopic end of the multi-stage electric telescopic rod 10 is fixedly connected to a limiting component 4; the limiting component 4, the limiting component 4 includes a limiting frame 401, the rear surface of the limiting frame 401 is fixedly connected with a connecting block 403, the rear surface of the connecting block 403 is fixedly connected to the telescopic end of the multi-stage electric telescopic rod 10, the screening frame 3 The inner bottom of the filter frame 3 is provided with a first filter plate 11, a second filter plate 12 and a third filter plate 13 in sequence from front to back. The outer surface of the limit frame 401 is fitted with the inner surface of the screening frame 3. A plurality of fine filter holes 15 are evenly provided on the top of the first filter plate 11, a plurality of medium filter holes 16 are evenly provided on the top of the second filter plate 12, and a plurality of coarse filter holes 17 are evenly provided on the top of the third filter plate 13. The diameter of the fine filter holes 15 is smaller than that of the medium filter holes 16, and the diameter of the medium filter holes 16 is smaller than that of the coarse filter holes 17. The outer surfaces of both sides of the screening frame 3 are respectively fixedly connected with second mounting blocks 7, the tops of the two second mounting blocks 7 are fixedly connected with mounting brackets 8, and the top of the mounting bracket 8 is fixedly connected with a vibration motor 9.

[0024] The effect achieved by the entire embodiment 1 is that, when screening plastic particles, the plastic particles to be screened are first poured into the limit frame 401, so that it is limited above the first filter plate 11, and the vibration motor frame 9 is started. When working, the vibration motor 9 will transmit the generated vibration force to the screening frame 3 through the mounting frame 8 and the second mounting block 7 to which it is fixed. Since the screening frame 3 is connected to the fixed frame 1 through the springs 6 connected to the bottom of the first mounting block 5, and the multiple springs 6 are suspended on the top of the fixed frame 1, the screening frame 3 will vibrate synchronously under the action of the vibration motor 9, so that the material in the limit frame 401 will be under the action of vibration, and the smaller plastic particles will be discharged through the fine filter holes 15 opened on the surface of the first filter plate 11. After sufficient screening, the vibration motor 9 is kept vibrating continuously, and the multi-stage electric telescopic rod 10 is started. The telescopic end of the rod is fixedly connected to the connecting block 403, which will drag the bottom of the limit frame 401 to slide on the surface of multiple filter plates, driving the plastic particles in the limit frame 401 to move and stay on the subsequent second filter plate 12 and third filter plate 13 surfaces in turn, so that plastic particles of different sizes in the plastic particles are discharged from multiple medium filter holes 16 and coarse filter holes 17 respectively, playing the role of multi-stage screening, and solving the problem in the background technology that when plastic particles roll on the sloped multi-stage filter surface, some plastic particles fail to pass through the corresponding screen in time and fall, which leads to the large-diameter plastic particles screened by the subsequent coarse-pore filter being often mixed with more fine plastic particles, affecting the screening effect.

[0025] Example 2: Figure 1-Figure 4 As shown, the outer surfaces of both sides of the limit frame 401 are symmetrically fixedly connected with sliders 402, and the inner surface of the screening frame 3 is symmetrically provided with slide grooves 14 on both sides, and the slide grooves 14 are matched with the sliders 402. The bottom of the fixed frame 1 is fixedly connected with the support frame 2, and the support frame 2 is connected to the fixed frame 1.

[0026] The effect achieved by the entire embodiment 2 is that, when in use, when the limit frame 401 moves in the screening frame 3, the sliders 402 fixedly connected on both sides will slide along the inner surface of the slide groove 14, playing a limiting role, preventing the bottom of the limit frame 401 from separating from the surfaces of multiple filter plates, causing some plastic particles to leak out, and having high practicality.

[0027] Working principle: When screening plastic particles, first pour the plastic particles to be screened into the limit frame 401, limit it above the first filter plate 11, start the vibration motor frame 9, and the vibration motor 9 will transmit the generated vibration force to the screening frame 3 through the mounting frame 8 and the second mounting block 7 to which it is fixed when working. Since the screening frame 3 is connected to the fixed frame 1 through multiple springs 6 connected to the bottom of the first mounting block 5, and is suspended on the top of the fixed frame 1 by multiple springs 6, the screening frame 3 will vibrate synchronously under the action of the vibration motor 9, so that the material in the limit frame 401 will be under the action of vibration, and the smaller plastic particles will be discharged through the fine filter holes 15 opened on the surface of the first filter plate 11. After the screening, the vibration motor 9 is kept vibrating continuously, and the multi-stage electric telescopic rod 10 is started. The telescopic end of the rod is fixedly connected to the connecting block 403, which will drag the bottom of the limit frame 401 to slide on the surface of multiple filter plates, driving the plastic particles in the limit frame 401 to move and stay on the subsequent second filter plate 12 and third filter plate 13 surfaces in turn, so that plastic particles of different sizes in the plastic particles are discharged from multiple medium filter holes 16 and coarse filter holes 17 respectively, playing the role of multi-stage screening. When the limit frame 401 moves in the screening frame 3, the sliders 402 fixedly connected on both sides will slide along the inner surface of the slide groove 14, playing the role of limiting, preventing the bottom of the limit frame 401 from separating from the surfaces of multiple filter plates, causing some plastic particles to leak out, and having high practicality.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A multi-stage screening device for plastic particles, characterized in that: include: A fixed frame (1) and a screening frame (3), wherein first mounting blocks (5) are symmetrically fixedly connected to the outer surfaces of both sides of the screening frame (3), a spring (6) is fixedly connected between the bottoms of the plurality of first mounting blocks (5) and the top of the fixed frame (1), a multi-stage electric telescopic rod (10) is fixedly connected to the rear surface of the screening frame (3), and the telescopic end of the multi-stage electric telescopic rod (10) is fixedly connected to a limiting assembly (4); A limiting assembly (4), the limiting assembly (4) comprising a limiting frame (401), a connecting block (403) being fixedly connected to the rear surface of the limiting frame (401), and a connecting block (403) being fixedly connected to the telescopic end of the multi-stage electric telescopic rod (10).

2. The multi-stage screening device for plastic particles according to claim 1, characterized in that: The inner bottom of the screening frame (3) is provided with a first filter plate (11), a second filter plate (12), and a third filter plate (13) in sequence from front to back, and the outer surface of the limiting frame (401) is in contact with the inner surface of the screening frame (3).

3. The multi-stage screening device for plastic particles according to claim 2, characterized in that: The top of the first filter plate (11) is uniformly provided with a plurality of fine filter holes (15), the top of the second filter plate (12) is uniformly provided with a plurality of medium filter holes (16), and the top of the third filter plate (13) is uniformly provided with a plurality of coarse filter holes (17).

4. The multi-stage screening device for plastic particles according to claim 3, characterized in that: The diameter of the fine filter pores (15) is smaller than that of the medium filter pores (16), and the diameter of the medium filter pores (16) is smaller than that of the coarse filter pores (17).

5. The multi-stage screening device for plastic particles according to claim 4, characterized in that: Slide blocks (402) are symmetrically fixedly connected to the outer surfaces of both sides of the limit frame (401), and slide grooves (14) are symmetrically opened on both sides of the inner surface of the screening frame (3), and the slide grooves (14) are matched with the slide blocks (402).

6. The multi-stage screening device for plastic particles according to claim 5, characterized in that: The outer surfaces of both sides of the screening frame (3) are respectively fixedly connected to second mounting blocks (7), the tops of the two second mounting blocks (7) are both fixedly connected to mounting frames (8), and the tops of the mounting frames (8) are fixedly connected to a vibration motor (9).

7. The multi-stage screening device for plastic particles according to claim 6, characterized in that: The bottom of the fixed frame (1) is fixedly connected to a support frame (2), and the support frame (2) is arranged in communication with the fixed frame (1).

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