A PVC plastic particle impurity screening device

Abstract

The utility model discloses the technical field of PVC plastics discloses a PVC plastic particle impurity screening device, including screening box, the top fixedly connected with feed channel of screening box, the top fixedly connected with feed hopper of feed channel, the inner wall of feed channel is provided with screening mechanism. The utility model discloses through setting up sieve plate and elastic plate, material is through feed hopper and is fed, falls on sieve plate when, gravitational potential energy extrudes spring, then the spring of compression rebounds and throws material, and the fine dust in material is raised together, then the dust that fan diffuses in feed channel is inhaled dust catcher through dust suction pipeline, through setting up scraper and electrode block, and power supply supplies power to electrode block through intercommunication line, then when material is below electrified conveyer belt, PVC particle does not have change because its relatively lower electric conductivity, and metal particle or other plastics is attracted because its higher electric conductivity, and is adsorbed on the surface of electrified conveyer belt.

Description

Technical Field

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

[0002] With the continuous advancement of modern industrialization, PVC plastic has become an important raw material for plastic products due to its excellent physical properties and wide range of applications. PVC plastic granules are widely used in many industries such as construction, electronics, automobiles, and packaging. However, during the production process, PVC granules are often mixed with different kinds of impurities, such as metal particles, foreign objects, and impurity plastics. These impurities not only affect the quality of the product, but may also have a negative impact on subsequent processing technology.

[0003] Existing methods for screening PVC granules typically rely on mechanical screens and vibrating screens. Vibrating motors or airflow cause the granules to move along the screen, preventing larger granules from passing through the screen openings while smaller granules are screened out. However, this method suffers from problems such as low screening accuracy and poor removal of fine dust. Furthermore, when the size of the impurities is similar to that of the PVC granules, the screen cannot effectively separate them. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a PVC plastic particle impurity screening device.

[0005] This utility model is achieved by the following technical solution: a PVC plastic particle impurity screening device, including a screening box, a feeding channel fixedly connected to the top of the screening box, a feeding hopper fixedly connected to the top of the feeding channel, a screening mechanism provided on the inner wall of the feeding channel, a conveying mechanism provided on the inner wall of the screening box, and a cleaning hopper fixedly connected to the surface of the screening box.

[0006] The screening mechanism includes a dust collection pipe, a dust collection box fixedly connected to the bottom of the dust collection pipe, a filter plate fixedly connected to the inner wall of the dust collection box, a fan fixedly connected to the surface of the dust collection box near the filter plate, a screen plate fixedly connected to the end of the dust collection pipe away from the dust collection box, a spring plate rotatably connected to the inner wall of the feeding channel, a spring fixedly connected to the bottom of the spring plate, a first mounting block fixedly connected to the surface of the screening box, a first motor fixedly connected to the surface of the first mounting block, an insulated drive roller fixedly connected to the output end of the first motor, an insulated driven roller rotatably connected to the inner wall of the screening box, an electrically powered conveyor belt drivingly connected to the surface of the insulated drive roller, a scraper fixedly connected to the inner wall of the screening box, an electrode block fixedly connected to the inner wall of the screening box, a connecting line fixedly connected to the inner wall of the screening box, and a power source fixedly connected to the end of the connecting line away from the screening box.

[0007] As a further improvement to the above solution, the surface of the dust suction pipe is fixedly connected to the inner wall of the feeding channel, and the surface of the dust collection box is fixedly connected to the surface of the screening box.

[0008] As a further improvement to the above solution, several spring plates and screen plates are provided, arranged vertically opposite each other on the inner wall of the feeding channel.

[0009] Through the above technical solution, by setting up a screen plate and a spring plate, the material is fed through the feed hopper. When it falls onto the screen plate, the gravitational potential energy compresses the spring, and then the compressed spring rebounds, throwing the material up. The fine dust in the material is also raised. Then, the fan sucks the dust in the feed channel into the dust collection box through the dust suction pipe. At the same time, the filter plate intercepts the dust, ensuring that the fan is not affected. The screen plate ensures that material particles are not sucked into the dust suction pipe during dust suction, ensuring the reliability of the device.

[0010] As a further improvement to the above scheme, the bottom of the scraper is slidably connected to the surface of the energized conveyor belt, the inner wall of the energized conveyor belt is drively connected to the surface of the insulated driven roller, and the connecting line is connected to the electrode block.

[0011] Through the above technical solution, by setting up scrapers and electrode blocks, the power supply is provided to the electrode blocks through the connecting lines. When the material passes under the electrified conveyor belt, PVC particles will not change due to their relatively low electrical conductivity, while metal particles or other plastics will be attracted and adsorbed on the surface of the electrified conveyor belt due to their high electrical conductivity. At the same time, the first motor drives the insulated active roller to rotate, which in turn drives the electrified conveyor belt to rotate. Then, the scraper scrapes the impurities attached to the surface of the electrified conveyor belt onto the cleaning hopper and removes them from the device, ensuring the cleaning effect of the device.

[0012] As a further improvement to the above solution, the material conveying mechanism includes a second mounting block, a second motor is fixedly connected to the surface of the second mounting block, an active roller is fixedly connected to the output end of the second motor, a driven roller is connected to the inner wall of the screening box to drive the inner wall to rotate, a conveyor belt is connected to the surface of the active roller, and a spreading rake is fixedly connected to the inner wall of the screening box.

[0013] As a further improvement to the above solution, the surface of the second mounting block is fixedly connected to the surface of the screening box, and the surface of the driven roller is drivenly connected to the inner wall of the conveyor belt.

[0014] As a further improvement to the above scheme, the number of spreading rakes is set to several, and they are arranged alternately on the inner wall of the screening box.

[0015] The above technical solution involves setting up spreading rakes. When the dust-removed material passes through the spreading rakes, the spreading rakes, which are arranged in a staggered pattern, spread the material evenly on the conveyor belt, ensuring the effect of subsequent impurity removal and improving the practicality of the device.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention employs a screening mechanism, specifically a sieve plate and a spring plate. Material is fed through a hopper and falls onto the sieve plate. Gravity compresses the spring, causing it to rebound and throw the material up, along with fine dust particles. A fan then draws the dust from the feed channel into a dust collection box via a suction pipe. Simultaneously, a filter plate intercepts the dust, ensuring the fan remains unaffected. The sieve plate prevents material particles from being drawn into the suction pipe during dust collection, guaranteeing the device's reliability. A scraper and electrode blocks are also included, with power supplied to the electrode blocks via a connecting line. As the material passes under the electrified conveyor belt, PVC particles, due to their relatively low conductivity, remain unchanged, while metal particles or other plastics, due to their higher conductivity, are attracted and adhere to the surface of the electrified conveyor belt. Simultaneously, a first motor drives an insulated drive roller, which in turn rotates the electrified conveyor belt. The scraper then scrapes the impurities adhering to the conveyor belt surface onto a cleaning hopper for removal from the device, ensuring effective cleaning.

[0018] This utility model incorporates a material conveying mechanism, specifically a spreading rake. When the dust-removed material passes through the spreading rake, the rake, which is arranged in a staggered pattern, spreads the material evenly on the conveyor belt, ensuring the effectiveness of subsequent impurity removal and improving the practicality of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a side view of the structure of this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the present invention.

[0022] Figure 4 This is a schematic cross-sectional view of the present invention.

[0023] Figure 5 This utility model Figure 4 Schematic diagram of the structure at point A in the middle.

[0024] Explanation of key symbols:

[0025] 1. Screening box; 2. Feeding channel; 3. Feeding hopper; 4. Screening mechanism; 401. Dust collection pipe; 402. Dust collection box; 403. Filter plate; 404. Fan; 405. Screen plate; 406. Spring plate; 407. Spring; 408. First mounting block; 409. First motor; 410. Insulated drive roller; 411. Insulated driven roller; 412. Powered conveyor belt; 413. Scraper; 414. Electrode block; 415. Connecting line; 416. Power supply; 5. Conveying mechanism; 501. Second mounting block; 502. Second motor; 503. Drive roller; 504. Driven roller; 505. Conveyor belt; 506. Spreading rake; 6. Cleaning hopper. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] Example:

[0028] Please combine Figure 1-5 The PVC plastic particle impurity screening device of this embodiment includes a screening box 1, a feeding channel 2 fixedly connected to the top of the screening box 1, a feeding hopper 3 fixedly connected to the top of the feeding channel 2, a screening mechanism 4 provided on the inner wall of the feeding channel 2, a conveying mechanism 5 provided on the inner wall of the screening box 1, and a cleaning hopper 6 fixedly connected to the surface of the screening box 1.

[0029] The screening mechanism 4 includes a dust collection pipe 401, a dust collection box 402 fixedly connected to the bottom of the dust collection pipe 401, a filter plate 403 fixedly connected to the inner wall of the dust collection box 402, a fan 404 fixedly connected to the surface of the dust collection box 402 near the filter plate 403, a screen plate 405 fixedly connected to the end of the dust collection pipe 401 away from the dust collection box 402, a spring plate 406 rotatably connected to the inner wall of the feed channel 2, a spring 407 fixedly connected to the bottom of the spring plate 406, and a first mounting block 408 fixedly connected to the surface of the screening box 1. A first motor 409 is fixedly connected to the surface of the mounting block 408. An insulated drive roller 410 is fixedly connected to the output end of the first motor 409. An insulated driven roller 411 is rotatably connected to the inner wall of the screening box 1. An electrically powered conveyor belt 412 is drivenly connected to the surface of the insulated drive roller 410. A scraper 413 is fixedly connected to the inner wall of the screening box 1. An electrode block 414 is fixedly connected to the inner wall of the screening box 1. A connecting line 415 is fixedly connected to the inner wall of the screening box 1. A power supply 416 is fixedly connected to the end of the connecting line 415 away from the screening box 1.

[0030] The surface of the dust collection pipe 401 is fixedly connected to the inner wall of the feeding channel 2, and the surface of the dust collection box 402 is fixedly connected to the surface of the screening box 1.

[0031] Several spring plates 406 and screen plates 405 are provided, arranged vertically opposite each other on the inner wall of the feeding channel 2. When the material is fed through the feeding hopper 3 and falls onto the screen plate 405, the gravitational potential energy compresses the spring, and then the compressed spring rebounds and throws the material up. Fine dust in the material is also raised. Then the fan 404 sucks the dust in the feeding channel 2 into the dust collection box 402 through the dust suction pipe 401. At the same time, the filter plate 403 intercepts the dust to ensure that the fan 404 is not affected. The screen plate 405 ensures that material particles are not sucked into the dust suction pipe 401 during dust suction.

[0032] The bottom of the scraper 413 is slidably connected to the surface of the electrified conveyor belt 412. The inner wall of the electrified conveyor belt 412 is drivenly connected to the surface of the insulated driven roller 411. The connecting line 415 is connected to the electrode block 414. The power supply 416 supplies power to the electrode block 414 through the connecting line 415. When the material passes under the electrified conveyor belt 412, the PVC particles will not change due to their relatively low electrical conductivity, while the metal particles or other plastics will be attracted and adsorbed on the surface of the electrified conveyor belt 412 due to their high electrical conductivity. At the same time, the first motor 409 drives the insulated drive roller 410 to rotate, which in turn drives the electrified conveyor belt 412 to rotate. Then the scraper 413 scrapes the impurities attached to the surface of the electrified conveyor belt 412 onto the cleaning hopper 6 for cleaning.

[0033] The material conveying mechanism 5 includes a second mounting block 501, a second motor 502 is fixedly connected to the surface of the second mounting block 501, an active roller 503 is fixedly connected to the output end of the second motor 502, a driven roller 504 is connected to the inner wall of the screening box 1 to drive the inner wall to rotate, a conveyor belt 505 is connected to the surface of the active roller 503, and a spreading rake 506 is fixedly connected to the inner wall of the screening box 1.

[0034] The surface of the second mounting block 501 is fixedly connected to the surface of the screening box 1, and the surface of the driven roller 504 is drivenly connected to the inner wall of the conveyor belt 505.

[0035] There are several spreading rakes 506, which are staggered on the inner wall of the screening box 1. When the dust-removed material passes through the spreading rakes 506, the staggered spreading rakes 506 spread the material, ensuring that the material is evenly distributed on the conveyor belt 505, thus ensuring the effect of subsequent impurity removal.

[0036] The implementation principle of the PVC plastic particle impurity screening device in this application embodiment is as follows: During use, material is fed through the feed hopper 3. When it falls onto the screen plate 405, the gravitational potential energy compresses the spring, and the compressed spring rebounds, throwing the material up. Fine dust in the material is also thrown up. Then, the fan 404 sucks the dust diffused in the feed channel 2 into the dust collection box 402 through the dust suction pipe 401. At the same time, the filter plate 403 intercepts the dust, ensuring that the fan 404 is not affected. The screen plate 405 ensures that material particles are not sucked into the dust suction pipe 401 during dust suction. Then, when the dust-removed material passes through the spreading rake 506, the spreading rake 506 is arranged alternately on the left and right. The material is spread out to ensure it is evenly distributed on the conveyor belt 505, which ensures the effect of subsequent impurity removal. Then, the power supply 416 supplies power to the electrode block 414 through the connecting line 415. When the material passes under the electrified conveyor belt 412, the PVC particles will not change due to their relatively low electrical conductivity, while the metal particles or other plastics will be attracted and adsorbed on the surface of the electrified conveyor belt 412 due to their high electrical conductivity. At the same time, the first motor 409 drives the insulated drive roller 410 to rotate, which in turn drives the electrified conveyor belt 412 to rotate. Then, the scraper 413 scrapes the impurities attached to the surface of the electrified conveyor belt 412 onto the cleaning hopper 6 for removal.

[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A PVC plastic particle impurity screening device, characterized in that, Includes a screening box (1), the top of the screening box (1) is fixedly connected to a feeding channel (2), the top of the feeding channel (2) is fixedly connected to a feeding hopper (3), the inner wall of the feeding channel (2) is provided with a screening mechanism (4), the inner wall of the screening box (1) is provided with a conveying mechanism (5), and the surface of the screening box (1) is fixedly connected to a cleaning hopper (6); The screening mechanism (4) includes a dust suction pipe (401), a dust collection box (402) fixedly connected to the bottom of the dust suction pipe (401), a filter plate (403) fixedly connected to the inner wall of the dust collection box (402), a fan (404) fixedly connected to the surface of the dust collection box (402) near the filter plate (403), a screen plate (405) fixedly connected to the end of the dust suction pipe (401) away from the dust collection box (402), a spring plate (406) rotatably connected to the inner wall of the feeding channel (2), a spring (407) fixedly connected to the bottom of the spring plate (406), and a first mounting block (408) fixedly connected to the surface of the screening box (1). A first motor (409) is fixedly connected to the surface of the first mounting block (408). An insulated active roller (410) is fixedly connected to the output end of the first motor (409). An insulated driven roller (411) is rotatably connected to the inner wall of the screening box (1). An electrically powered conveyor belt (412) is drivenly connected to the surface of the insulated active roller (410). A scraper (413) is fixedly connected to the inner wall of the screening box (1). An electrode block (414) is fixedly connected to the inner wall of the screening box (1). A connecting line (415) is fixedly connected to the inner wall of the screening box (1). A power supply (416) is fixedly connected to the end of the connecting line (415) away from the screening box (1).

2. The PVC plastic particle impurity screening device as described in claim 1, characterized in that: The surface of the dust collection pipe (401) is fixedly connected to the inner wall of the feeding channel (2), and the surface of the dust collection box (402) is fixedly connected to the surface of the screening box (1).

3. The PVC plastic particle impurity screening device as described in claim 1, characterized in that: Several spring plates (406) and sieve plates (405) are provided, arranged vertically opposite each other on the inner wall of the feed channel (2).

4. The PVC plastic particle impurity screening device as described in claim 1, characterized in that: The bottom of the scraper (413) is slidably connected to the surface of the energized conveyor belt (412), the inner wall of the energized conveyor belt (412) is drively connected to the surface of the insulated driven roller (411), and the connecting line (415) is connected to the electrode block (414).

5. The PVC plastic particle impurity screening device as described in claim 1, characterized in that: The material conveying mechanism (5) includes a second mounting block (501), a second motor (502) is fixedly connected to the surface of the second mounting block (501), an active roller (503) is fixedly connected to the output end of the second motor (502), a driven roller (504) is connected to the inner wall of the screening box (1) to rotate, a conveyor belt (505) is connected to the surface of the active roller (503) to drive the transmission, and a spreading rake (506) is fixedly connected to the inner wall of the screening box (1).

6. The PVC plastic particle impurity screening device as described in claim 5, characterized in that: The surface of the second mounting block (501) is fixedly connected to the surface of the screening box (1), and the surface of the driven roller (504) is drivenly connected to the inner wall of the conveyor belt (505).

7. The PVC plastic particle impurity screening device as described in claim 5, characterized in that: The number of spreading rakes (506) is set in several, and they are arranged alternately on the inner wall of the screening box (1).

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