Screening device for engineering plastics

Abstract

The utility model relates to an engineering plastic screening device, in particular to the technical field of engineering plastic production equipment. The screening device comprises a screening box, a base, a screening channel, a magnetic separation mechanism, a vibration motor and a collecting box, large-particle impurities of engineering plastics are screened out through a primary screening plate, ferromagnetic impurities are screened out through the magnetic separation mechanism after primary screening, and finally the engineering plastics enter the screening channel to achieve multi-stage screening. In the multi-stage screening process, light impurities in the engineering plastics can be correspondingly discharged from a first impurity discharging opening and a second impurity discharging opening through a first fan and a second fan respectively, and the light impurities are removed; according to the engineering plastic screening device, multiple types of impurities in engineering plastic can be fully screened out, screening can be carried out according to different sizes of engineering plastic particles, and the production requirements of the engineering plastic can be fully met.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering plastic production equipment, in particular to a screening device for engineering plastics. Background Art

[0002] With the development of the plastics industry, engineering plastics have found widespread application in the automotive, electronics, and aviation sectors due to their excellent mechanical properties, heat resistance, and chemical resistance. However, during the production process, engineering plastics are often contaminated with various impurities (such as lightweight and ferromagnetic impurities). If these impurities are not removed, they may affect the quality and performance of plastic products, especially in high-precision or demanding applications.

[0003] Nowadays, the removal of impurities in engineering plastics is mainly done through screening devices. The existing screening devices cannot fully screen out multiple types of impurities in engineering plastics and cannot screen engineering plastics according to different particle sizes, which cannot meet production needs. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] The utility model provides a screening device for engineering plastics, which overcomes the shortcomings of existing screening devices that cannot fully screen out multiple types of impurities in engineering plastics and cannot screen engineering plastics according to different particle sizes, thus failing to meet production requirements.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a screening device for engineering plastics, including a screening box, a base, a screening channel, a magnetic separation mechanism, a vibration motor, and a collection box. The base is provided at the bottom of the screening box, and a zigzag screening channel is provided in the screening box. The upper end of the screening channel is an entrance and is connected with the top of the screening box, and the lower end of the screening channel is an outlet and is connected with the accommodating portion. The screening channel is composed of a first partition, a second partition, a third partition and a third screen plate arranged in sequence from top to bottom. The first partition and the third partition are arranged on one side inner wall of the screening box, and the second partition and the third screen plate are located on the other side inner wall of the screening box. The second partition is a horizontal V-shape and is connected from top to bottom by the head and tail of the first screen plate and the first material guide plate respectively. The third partition is a horizontal V-shape and is respectively connected by the head and tail of the second screen plate and the second guide plate from top to bottom. A second impurity discharge port is provided on the outer wall of one side of the screening box, and a first impurity discharge port and a first discharge port are provided on the outer wall of the other side of the screening box from top to bottom. The first guide plate is inclined toward the first discharge port. A first fan is also installed at a position where the first partition and the first impurity discharge port are parallel to each other. A second fan is also installed at a position where the first guide plate and the second impurity discharge port are parallel to each other. The third screen plate is inclined toward the outlet, the vibration motor is installed in the base, a second discharge port is provided below the third screen plate, a third discharge port is provided below the second screen plate, the second guide plate is inclined toward the third discharge port, and the upper end of the inlet is connected to the magnetic separation mechanism.

[0008] Preferably, the base is divided into a receiving portion in the middle and a first slot and a second slot respectively located on both sides of the receiving portion by two partitions, and the vibration motor is installed in the receiving portion.

[0009] Preferably, the first sieve plate is inclined toward the upper end of the second sieve plate, and the second sieve plate is inclined toward the upper end of the third sieve plate.

[0010] Preferably, a collection box is provided in the accommodating portion directly below the outlet, a first drawer is provided in the first slot, and a second drawer is provided in the second slot.

[0011] Preferably, the mesh sizes of the first sieve plate, the second sieve plate and the third sieve plate are arranged in increasing order.

[0012] Preferably, the second discharge port is provided at the bottom of the screening box and is communicated with the first slot, and the third discharge port is provided at the bottom of the screening box and is communicated with the second slot.

[0013] Preferably, the magnetic separation mechanism includes a shell, a feed chute, a magnetic shaft, a roller, a first discharge port, a second discharge port, and a drive motor. The feed chute is provided at the upper end of the shell, and the roller is rotatably installed between the inner walls on both sides of the shell. The roller is driven by the drive motor. The magnetic shaft is located in the roller and is coaxially arranged with the roller. Both ends of the magnetic shaft are rotatably connected to both ends of the roller. One end of the magnetic shaft extends out of the roller and the shell and is connected to the shell. The outer periphery of the magnetic shaft is divided into a magnetic area and a non-magnetic area in half. The magnetic area is provided with a permanent magnet. A first discharge port is provided below the magnetic area, and a second discharge port is provided below the non-magnetic area. The lower end of the first discharge port is connected to the upper end of the inlet.

[0014] Preferably, a third impurity row port is provided on one side of the feed chute, a primary screening plate inclined toward the third impurity row port is provided in the feed chute, and guide plates extending to the surface of the drum are respectively provided at the bottom of both ends of the primary screening plate.

[0015] (3) Beneficial effects

[0016] The utility model provides a screening device for engineering plastics, which overcomes the shortcomings of existing screening devices that cannot fully screen out multiple types of impurities in engineering plastics and cannot screen engineering plastics according to different particle sizes, thus failing to meet production needs. Compared with the existing technology, the utility model has the following beneficial effects:

[0017] 1. The engineering plastics are first screened out of large particles through the primary screening plate. After the primary screening, the ferromagnetic impurities are screened out through the magnetic separation mechanism. Finally, the particles enter the screening channel for multi-stage screening. During the multi-stage screening process, the light impurities in the engineering plastics can be discharged from the first and second impurity discharge ports respectively through the first and second fans, thereby removing the light impurities. This can not only fully screen out multiple types of impurities in the engineering plastics, but also screen the engineering plastics according to the different particle sizes, which can fully meet the production needs of engineering plastics.

[0018] 2. By coordinating the vibration of the vibration motor during the screening process, sufficient and efficient screening of engineering plastics can be achieved.

[0019] 3. The first sieve plate is tilted toward the upper end of the second sieve plate, and the second sieve plate is tilted toward the upper end of the third sieve plate. This arrangement can fully screen out impurities in engineering plastics. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Figure 2 It is a bottom view of the magnetic separation mechanism of the present utility model.

[0022] Figure 3 It is a front view of the screening box of the present invention.

[0023] The figures are marked as follows: 1-screening box, 2-base, 21-accommodation portion, 22-first slot, 23-second slot, 24-first drawer, 25-second drawer, 3-screening channel, 31-entrance, 32-exit, 33-first partition, 34-second partition, 341-first screen plate, 342-first guide plate, 35-third partition, 351-second screen plate, 352-second guide plate, 36-third screen plate, 4-first discharge Outlet, 5-second discharge outlet, 6-third discharge outlet, 7-magnetic separation mechanism, 71-shell, 72-feed chute, 721-primary screening plate, 722-third impurity discharge outlet, 723-guide plate, 73-magnetic shaft, 74-drum, 75-first discharge outlet, 76-second discharge outlet, 77-drive motor, 8-vibration motor, 9-first fan, 10-first impurity discharge outlet, 11-second fan, 12-second impurity discharge outlet, 13-collection box. DETAILED DESCRIPTION

[0024] The present invention will be further described with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 3As shown, the screening device of engineering plastics described in the present invention includes a screening box 1, a base 2, a screening channel 3, a magnetic separation mechanism 7, a vibration motor 8, and a collecting box 13. The bottom of the screening box 1 is provided with the base 2, and the screening channel 3 is provided with a "Z"-shaped screening channel 3. The upper end of the screening channel 3 is an inlet 31 and is connected with the top of the screening box 1, and the lower end of the screening channel 3 is an outlet 32 ​​and is connected with the accommodating portion 21. The screening channel 3 is composed of a first partition 33, a second partition 34, a third partition 35 and a third sieve plate 36 arranged in sequence from top to bottom. The first partition 33 and the third partition 35 are arranged on the inner wall of one side of the screening box 1, and the second partition 34 and the third sieve plate 36 are located on the inner wall of the other side of the screening box 1. The second partition 34 is a horizontal V-shape and is connected from top to bottom by the head and tail of the first sieve plate 341 and the first guide plate 342. The three partitions 35 are horizontally V-shaped and are connected from top to bottom by the second sieve plate 351 and the second guide plate 352. A second impurity discharge port 12 is provided on the outer wall of one side of the screening box 1, and a first impurity discharge port 10 and a first discharge port 4 are provided on the outer wall of the other side of the screening box 1 from top to bottom. The first guide plate 342 is inclined toward the first discharge port 4. A first fan 9 is also installed at a position where the first partition 33 and the first impurity discharge port 10 are parallel to each other. A second fan 11 is also installed at a position where the first guide plate 342 and the second impurity discharge port 12 are parallel to each other. The third sieve plate 36 is inclined toward the outlet 32. The vibration motor 8 is installed in the base 2. A second discharge port 5 is provided below the third sieve plate 36. A third discharge port 6 is provided below the second sieve plate 351. The second guide plate 352 is inclined toward the third discharge port 6. The upper end of the inlet 31 is connected to the magnetic separation mechanism 7.

[0026] The base 2 is divided into a central accommodating portion 21 and a first slot 22 and a second slot 23 corresponding to both sides of the accommodating portion 21 by two partitions. The vibration motor 8 is installed in the accommodating portion 21. During the screening process, the vibration of the vibration motor 8 can be coordinated to achieve sufficient and efficient screening of engineering plastics.

[0027] The first sieve plate 341 is tilted toward the upper end of the second sieve plate 351 , and the second sieve plate 351 is tilted toward the upper end of the third sieve plate 36 . This arrangement can fully screen out impurities in engineering plastics.

[0028] A collection box 13 is provided in the accommodating portion 21 directly below the outlet 32 ​​, a first drawer 24 is provided in the first slot 22 , and a second drawer 25 is provided in the second slot 23 .

[0029] The mesh sizes of the first sieve plate 341 , the second sieve plate 351 and the third sieve plate 36 are set to increase in sequence.

[0030] The second discharge port 5 is provided at the bottom of the screening box 1 and communicates with the first slot 22 , and the third discharge port 6 is provided at the bottom of the screening box 1 and communicates with the second slot 23 .

[0031] The magnetic separation mechanism 7 includes a shell 71, a feed chute 72, a magnetic shaft 73, a roller 74, a first discharge port 75, a second discharge port 76, and a drive motor 77. The feed chute 72 is provided at the upper end of the shell 71, and the roller 74 is rotatably installed between the inner walls of the shell 71. The roller 74 is driven by the drive motor 77. The magnetic shaft 73 is located in the roller 74 and is coaxially arranged with the roller 74. The two ends of the magnetic shaft 73 are rotatably connected to the two ends of the roller 74. One end of the magnetic shaft 73 extends out of the roller 74 and the shell 71 and is connected to the shell 71. The outer periphery of the magnetic shaft 73 is divided into a magnetic area and a non-magnetic area in half. The magnetic area is provided with a permanent magnet. A first discharge port 75 is provided below the magnetic area, and a second discharge port 76 is provided below the non-magnetic area. The lower end of the first discharge port 75 is connected to the upper end of the inlet 31.

[0032] A third impurity discharge port 722 is provided on one side of the feed chute 72 , and a primary screening plate 721 inclined toward the third impurity discharge port 722 is provided in the feed chute 72 . Guide plates 723 extending to the surface of the drum 74 are provided at the bottom of both ends of the primary screening plate 721 .

[0033] In actual work, the engineering plastics to be screened are poured into the feed chute 72 and fall into the primary screening plate 721 to filter out large particles of impurities, and the filtered large particles of impurities are discharged from the first impurity discharge port 722. The engineering plastics that have passed the primary screening fall onto the roller 74 along the guide plate 723, and the drive motor 77 is started to drive the roller 74 to rotate. Since the magnetic shaft 73 is fixed, when the roller 74 rotates and enters the magnetic area of ​​the magnetic separation shaft 73, ferromagnetic impurities are adsorbed on the roller 74, and the engineering plastics fall and are discharged from the first discharge port 75 into the screening channel 3 in the screening box 1 for the next step of screening. When the roller 74 continues to rotate and enters the non-magnetic area of ​​the magnetic separation shaft 73, the ferromagnetic impurities are discharged from the second discharge port 76 under the action of gravity, completing the removal of ferromagnetic impurities.

[0034] The engineering plastics fall into the screening channel 3 to achieve multi-stage screening. The engineering plastics smaller than the mesh of the first sieve plate 341 pass through the first sieve plate 341 and are discharged from the first discharge port 4 under the action of the first guide plate 342. The engineering plastics larger than the mesh of the first sieve plate 341 fall along the first sieve plate 341 onto the second sieve plate 351 to achieve secondary screening. The engineering plastics smaller than the mesh of the second sieve plate 351 pass through the second sieve plate 351 and enter the second drawer 25 under the action of the second guide plate 352 to achieve collection. The engineering plastics larger than the mesh of the second sieve plate 351 fall along the second sieve plate 351 onto the third sieve plate 36 to achieve tertiary screening. The engineering plastics larger than the mesh of the third sieve plate 36 fall along the third sieve plate 36 into the collection box 13 to achieve collection. The engineering plastics smaller than the mesh of the third sieve plate 36 pass through the third sieve plate 36 into the first drawer 24 to achieve collection. In this way, the different sizes of engineering plastic particles can be effectively screened. During the screening process, the first fan 9 and the second fan 11 can be turned on to discharge light impurities in the engineering plastic from the first impurity discharge port 10 and the second impurity discharge port 12 respectively, thereby removing the light impurities.

[0035] The contents not described in detail in this specification belong to the prior art known to professionals in this field.

[0036] The above-described embodiments merely represent preferred embodiments of the present invention, and their descriptions are relatively specific and detailed. However, the present invention is not limited to these embodiments. It should be noted that any improvements made without departing from the spirit of the present invention are within the scope of protection of the present invention. Therefore, the scope of protection of this utility model patent shall be based on the appended claims.

Claims

1. A screening device for engineering plastics, characterized in that: The invention comprises a screening box (1), a base (2), a screening channel (3), a magnetic separation mechanism (7), a vibration motor (8), and a collecting box (13). The base (2) is provided at the bottom of the screening box (1). The screening channel (3) is provided in a zigzag shape. The upper end of the screening channel (3) is an inlet (31) and is connected to the top of the screening box (1). The lower end of the screening channel (3) is an outlet (32) and is connected to the accommodating portion (21). The screening channel (3) is provided through a first The screen box (1) is composed of a partition (33), a second partition (34), a third partition (35) and a third screen plate (36). The first partition (33) and the third partition (35) are arranged on the inner wall of one side of the screen box (1). The second partition (34) and the third screen plate (36) are located on the inner wall of the other side of the screen box (1). The second partition (34) is a horizontal V-shaped and is connected from top to bottom by the head and tail of the first screen plate (341) and the first guide plate (342). The third partition (35) is a horizontal V-shaped The screening box (1) is V-shaped and is formed by connecting the head and tail of the second sieve plate (351) and the second guide plate (352) from top to bottom. A second impurity discharge port (12) is provided on the outer wall of one side of the screening box (1). A first impurity discharge port (10) and a first discharge port (4) are provided on the outer wall of the other side of the screening box (1) from top to bottom. The first guide plate (342) is inclined toward the first discharge port (4). A first fan (9) is also installed at a position where the first partition plate (33) and the first impurity discharge port (10) are parallel to each other. The first guide plate (342) is inclined toward the first discharge port (4). A second fan (11) is also installed at a position parallel to the plate (342) and the second impurity discharge port (12); the third sieve plate (36) is inclined toward the outlet (32); the vibration motor (8) is installed in the base (2); a second discharge port (5) is provided below the third sieve plate (36); a third discharge port (6) is provided below the second sieve plate (351); the second guide plate (352) is inclined toward the third discharge port (6); and the upper end of the inlet (31) is connected to the magnetic separation mechanism (7).

2. The screening device for engineering plastics according to claim 1, characterized in that: The base (2) is divided into a central accommodating portion (21) and a first slot (22) and a second slot (23) located on both sides of the accommodating portion (21) by two partitions, and the vibration motor (8) is installed in the accommodating portion (21).

3. The screening device for engineering plastics according to claim 1, characterized in that: The first sieve plate (341) is inclined toward the upper end of the second sieve plate (351), and the second sieve plate (351) is inclined toward the upper end of the third sieve plate (36).

4. The screening device for engineering plastics according to claim 2, characterized in that: A collection box (13) is provided in the accommodating portion (21) directly below the outlet (32), a first drawer (24) is provided in the first slot (22), and a second drawer (25) is provided in the second slot (23).

5. The screening device for engineering plastics according to claim 1, characterized in that: The mesh sizes of the first sieve plate (341), the second sieve plate (351) and the third sieve plate (36) are arranged in increasing order.

6. The screening device for engineering plastics according to claim 2, characterized in that: The second discharge port (5) is provided at the bottom of the screening box (1) and is in communication with the first slot (22); the third discharge port (6) is provided at the bottom of the screening box (1) and is in communication with the second slot (23).

7. The screening device for engineering plastics according to claim 1, characterized in that: The magnetic separation mechanism (7) comprises a shell (71), a feed chute (72), a magnetic shaft (73), a roller (74), a first discharge port (75), a second discharge port (76), and a drive motor (77). The feed chute (72) is provided at the upper end of the shell (71). The roller (74) is rotatably mounted between the inner walls of both sides of the shell (71). The roller (74) is driven by the drive motor (77). The magnetic shaft (73) is located in the roller (74) and is synchronous with the roller (74). The shaft is provided, the two ends of the magnetic shaft (73) are rotatably connected to the two ends of the roller (74), one end of the magnetic shaft (73) extends out of the roller (74) and the shell (71) and is connected to the shell (71), the outer periphery of the magnetic shaft (73) is divided into a magnetic area and a non-magnetic area in half, the magnetic area is provided with a permanent magnet, a first discharge port (75) is provided below the magnetic area, and a second discharge port (76) is provided below the non-magnetic area, and the lower end of the first discharge port (75) is connected to the upper end of the inlet (31).

8. The screening device for engineering plastics according to claim 7, characterized in that: A third impurity discharge port (722) is provided on one side of the feed chute (72), a primary screening plate (721) inclined toward the third impurity discharge port (722) is provided in the feed chute (72), and guide plates (723) extending to the surface of the roller (74) are provided at the bottoms of both ends of the primary screening plate (721).

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