Plastic particle screening device

Abstract

The utility model belongs to the technical field of screening devices, and particularly relates to a plastic particle screening device which comprises a screening box. The top of the screening box is fixedly connected with a feeding port. A motor is arranged at the bottom of the screening box; the interior of the screening box is rotationally connected with a supporting rod. The output end of the motor is meshed with the end part of the supporting rod through a bevel gear; a plurality of first screens which are arranged in parallel are fixedly connected to the inner side wall of the screening box; according to the step, multiple layers of first screens are arranged, the hole diameters of the middle portions of the first screens are gradually decreased from top to bottom, plastic particles can be screened in a classified mode, through the arrangement that magnetic blocks and magnetic balls attract each other, the plastic particles can be scattered through rotation generated during traction, the plastic particles more evenly fall on the first screens, and the screening efficiency is improved. And meanwhile, when the magnetic balls and the magnetic blocks attract each other, vibration can be generated, meanwhile, the whole screening box is driven to vibrate, plastic particles accumulated on the top of the first screen are vibrated up, and the possibility that the first screen is blocked due to too large particles is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of screening devices, in particular to a plastic particle screening device. Background Art

[0002] ABS plastic particles are an important thermoplastic polymer material, commonly used in the electronics industry, decorative building materials, packaging, home furnishings, mechanical equipment and electronic instrumentation industry production. In the production process, acrylonitrile, butadiene and styrene are first polymerized at a specific temperature and pressure to generate ABS copolymers, and then the ABS copolymers are crushed, granulated and processed to finally obtain ABS plastic particles. There are many ways to screen plastic particles, and the commonly used methods are mechanical screening, airflow screening and hydraulic screening.

[0003] In existing mechanical screening, plastic particles to be screened are usually placed on top of the screen surface. Through the vibration and rotation of the screen surface, the particles are separated according to their size. During long-term use and observation, it is found that when using this screening method, larger plastic particles will clog the filter when being screened, making it impossible for other plastic particles to be screened to pass through the filter, affecting the screening results. At the same time, small particles of dust and other impurities that may be carried when the plastic particles are poured into the device will affect the quality of the plastic particles.

[0004] To this end, the utility model provides a plastic particle screening device. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve at least one problem raised in the background technology, a plastic particle screening device is proposed.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a plastic particle screening device described in the utility model comprises a screening box; a feed port is fixedly connected to the top of the screening box; a motor is arranged at the bottom of the screening box; a support rod is rotatably connected inside the screening box; the output end of the motor is meshed with the end of the support rod through a bevel gear; a plurality of first screens arranged in parallel are fixedly connected to the inner side wall of the screening box; the apertures in the middle of the plurality of first screens decrease from top to bottom; a plurality of magnetic blocks are fixedly connected to the inner wall of the screening box; the magnetic blocks are multiple and evenly distributed above each layer of the first screen; a plurality of strips are fixedly connected to the outer wall of the support rod Connecting rope; a magnetic ball is fixedly connected to the end of each connecting rope; the connecting rope and the magnetic ball are in multiple groups and are arranged corresponding to the magnetic blocks; in this step, the plastic particles can be graded and screened by providing multiple layers of the first screen and the aperture of the middle part decreases from top to bottom. By setting the magnetic block and the magnetic ball to attract each other, the rotation generated during traction can break up the plastic particles, so that the plastic particles fall more evenly on the first screen. At the same time, when the magnetic ball and the magnetic block are adsorbed on each other, vibration will be generated and the screening box will be driven to vibrate as a whole, so that the plastic particles accumulated on the top of the first screen will be shaken up, reducing the possibility of blocking the first screen due to too large particles.

[0007] Preferably, a water storage barrel is fixedly connected to the top of the screening box; a pair of first water pipes are symmetrically provided on the outer wall of the water storage barrel; a plurality of water outlet pipes are connected to the middle part of the first water pipe; the water outlet pipe is connected to the screening box and penetrates into the interior of the screening box; the water outlet pipe is arranged on the top of each layer of the first screen; a water tank is fixedly connected to the bottom of the screening box; a water pump is fixedly connected to a side wall of one side of the water tank; a second water pipe is connected to the top of the water storage barrel; the water outlet end of the water pump is connected to the end of the second water pipe; this step, by providing a water storage barrel, a first water pipe and a water outlet pipe, can play a role in cleaning the plastic particles when the staff pours the plastic particles into the screening box, can clean off small particles of dust and other impurities attached to the plastic particles, improve the accuracy of the screening particles, reduce the situation where impurities may affect the quality of the plastic particles, and at the same time, the second water pipe and the water pump can be provided to pump the water inside the water tank back to the water storage barrel for recycling, thereby reducing the waste of water resources.

[0008] Preferably, a fixing ring is fixedly connected to the outer wall of each water outlet pipe; the fixing ring is arranged inside the screening box; a fixing rod is fixedly connected to the middle part of each fixing ring; the fixing rod passes through the screening box and is fixedly connected to the middle part of the first water conduit; this step, by providing a fixing ring and a fixing rod, can reduce the displacement or instability of the position of the water outlet pipe caused by the continuous vibration inside the screening box after long-term use, can make the position of the water outlet pipe more stable, and extend the service life of the water outlet pipe.

[0009] Preferably, a baffle is rotatably connected to the bottom end of the feed port; a torsion spring is provided between the baffle and the feed port; a pair of limit blocks are fixedly connected to the inner wall of the feed port; the limit block is provided at the top of the opening and closing part of the baffle; the baffle is provided in this step so that the device can only allow entry but not exit, and when plastic particles are poured into the screening box, the situation in which the plastic particles contact the screen and rebound and pop out of the screening box can be reduced. At the same time, the limit block is provided to limit the baffle, and the position of the baffle is controlled to be always at the bottom of the feed port, thereby improving the sealing of the baffle.

[0010] Preferably, a second screen is fixedly connected to the top of the water tank; a plurality of third screens are fixedly connected to the water inlet end of the water pump; the positions of the plurality of third screens are parallel to each other and the internal screen holes thereof are staggered with each other; in this step, by setting the second screen, impurities in the water flow can be filtered once when the water flow cleans the plastic particles and flows into the water tank, so that the water remains in the water tank and the impurities remain on the top of the second screen, and by setting the third screen, the water in the water tank can be further filtered multiple times, thereby further reducing the residual impurities in the water flowing back into the water storage barrel.

[0011] Preferably, an observation window is provided on the outer wall of the screening box; the observation window is made of transparent material; by providing the observation window, when pouring the plastic particles into the screening box, the operation process of the screening box can be more intuitively observed, and when plastic particles block the screen, their position can be manually adjusted, thereby further reducing the possibility of the screen being blocked due to large particles, and further improving the accuracy of screening particles.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The utility model discloses a plastic particle screening device, which is provided with multiple layers of first screens and the aperture of the middle part decreases from top to bottom, so as to grade and screen the plastic particles. The magnetic block and the magnetic ball are arranged to attract each other, so that the rotation generated during traction can break up the plastic particles, so that the plastic particles fall on the first screen more evenly. At the same time, when the magnetic ball and the magnetic block are attracted to each other, vibration will be generated and the screening box will be driven to vibrate as a whole, so as to shake up the plastic particles accumulated on the top of the first screen, thereby reducing the possibility of blocking the first screen due to the large particles.

[0014] 2. The plastic particle screening device described in the utility model is provided with a water storage barrel, a first water pipe and a water outlet pipe, which can clean the plastic particles when the staff pours the plastic particles into the screening box. It can clean the small particles of dust and other impurities attached to the plastic particles, improve the accuracy of the screened particles, and reduce the situation where impurities may affect the quality of the plastic particles. At the same time, the second water pipe and the water pump can be provided to pump the water in the water tank back to the water storage barrel for recycling, thereby reducing the waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a stereogram in the utility model;

[0017] Figure 2 It is a cross-sectional view in the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the magnetic block striking the vibrating screen in the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the cleaning device in the utility model;

[0020] Figure 5 It is a schematic diagram of the matching structure of the water tank and the water pump in the utility model;

[0021] Legend:

[0022] 1. Screening box; 11. Feed inlet; 12. Motor; 13. Support rod; 14. First screen; 15. Magnetic block; 16. Connecting rope; 17. Magnetic ball; 2. Water storage barrel; 21. First water pipe; 22. Water outlet pipe; 23. Water tank; 24. Second water pipe; 25. Water pump; 3. Fixed ring; 31. Fixed rod; 4. Baffle; 41. Limit block; 5. Second screen; 51. Third screen; 6. Observation window. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Specific examples are given below.

[0025] like Figures 1 to 4As shown, a plastic particle screening device described in an embodiment of the utility model comprises a screening box 1; a feed port 11 is fixedly connected to the top of the screening box 1; a motor 12 is arranged at the bottom of the screening box 1; a support rod 13 is rotatably connected inside the screening box 1; the output end of the motor 12 is meshed with the end of the support rod 13 through a bevel gear; a plurality of first screens 14 arranged in parallel are fixedly connected to the inner side wall of the screening box 1; the apertures in the middle of the plurality of first screens 14 decrease from top to bottom; a plurality of magnetic blocks 15 are fixedly connected to the inner wall of the screening box 1; the magnetic blocks 15 are multiple and evenly distributed above each layer of the first screen 14; a plurality of connecting ropes 16 are fixedly connected to the outer wall of the support rod 13; a magnetic ball 17 is fixedly connected to the end of each connecting rope 16; the connecting ropes 16 and the magnetic balls 17 are multiple groups and are arranged corresponding to the magnetic blocks 15; when working, the staff removes the plastic particles from The feed port 11 is poured into the interior of the screening box 1, and the support rod 13 starts to rotate under the drive of the motor 12, and the connecting rope 16 fixed in the middle thereof also rotates accordingly. The magnetic ball 17 connected to the end of the connecting rope 16 is also continuously pulled and attracted to the magnetic block 15 on the inner wall of the screening box 1 under the action of centrifugal force. In this step, the plastic particles can be graded and screened by providing a multi-layer first screen 14 with a middle aperture decreasing from top to bottom. The magnetic block 15 and the magnetic ball 17 are attracted to each other, so that the rotation generated during traction can break up the plastic particles, so that the plastic particles fall on the first screen 14 more evenly. At the same time, when the magnetic ball 17 and the magnetic block 15 are adsorbed on each other, vibration will be generated and the screening box 1 will be driven to vibrate as a whole, so that the plastic particles accumulated on the top of the first screen 14 will be shaken up, reducing the possibility of blocking the first screen 14 due to too large particles.

[0026] Further, such as Figure 1 , Figure 2 and Figure 4As shown, a water storage barrel 2 is fixedly connected to the top of the screening box 1; a pair of first water pipes 21 are symmetrically provided on the outer wall of the water storage barrel 2; a plurality of water outlet pipes 22 are connected to the middle of the first water pipe 21; the water outlet pipe 22 is connected to the screening box 1 and penetrates into the interior of the screening box 1; the water outlet pipe 22 is arranged on the top of each layer of the first screen 14; a water tank 23 is fixedly connected to the bottom of the screening box 1; a water pump 25 is fixedly connected to the side wall of one side of the water tank 23; a second water pipe 24 is connected to the top of the water storage barrel 2; the water outlet end of the water pump 25 is connected to the end of the second water pipe 24; when working, the water storage barrel 2 will supply water to the first water pipe 21, and then spray the water into the interior of the screening box 1 through the water outlet pipe 22. The water will flow downward along the screen and flow into the water tank 23. The water in the water tank 23 will flow back to the water storage barrel 2 through the second water pipe 24 under the pumping of the water pump 25. This step can clean the plastic particles when the staff pours the plastic particles into the screening box 1 by providing the water storage barrel 2, the first water pipe 21 and the water outlet pipe 22. Small particles of dust and other impurities attached to the plastic particles can be cleaned, thereby improving the accuracy of the screened particles and reducing the possibility that impurities may affect the quality of the plastic particles. At the same time, the second water pipe 24 and the water pump 25 can be provided to pump the water in the water tank 23 back to the water storage barrel 2 for recycling, thereby reducing the waste of water resources.

[0027] Further, such as Figure 1 , Figure 2 and Figure 4 As shown, a fixing ring 3 is fixedly connected to the outer wall of each water outlet pipe 22; the fixing ring 3 is arranged inside the screening box 1; a fixing rod 31 is fixedly connected to the middle part of each fixing ring 3; the fixing rod 31 passes through the screening box 1 and is fixedly connected to the middle part of the first water pipe 21; when working, the water outlet pipe 22 sprays water into the screening box 1, the fixing ring 3 is fixedly connected to the middle part of the water outlet pipe 22 and to the fixing rod 31, and the fixing rod 31 is fixedly connected to the first water pipe 21, which can fix the water outlet pipe 22. This step is provided with a fixing ring 3 and a fixing rod 31, which can reduce the displacement or instability of the position of the water outlet pipe 22 caused by the continuous vibration inside the screening box 1 after long-term use, and can make the position of the water outlet pipe 22 more stable, thereby extending the service life of the water outlet pipe 22.

[0028] Further, such as Figure 1 and Figure 3As shown, the bottom end of the feed port 11 is rotatably connected with a baffle 4; a torsion spring is provided between the baffle 4 and the feed port 11; a pair of limit blocks 41 are fixedly connected to the inner wall of the feed port 11; the limit block 41 is arranged at the top of the opening and closing of the baffle 4; during operation, when the plastic particles are poured into the interior of the screening box 1, they must first enter through the feed port 11. A baffle 4 is provided at the bottom of the feed port 11. When the plastic particles pass through the baffle 4, the baffle 4 will be pressed downward. When all the plastic particles pass through the baffle 4, the rebound of the baffle 4 will be blocked by the limit block 41. The baffle 4 is set in this step to play the role of only entering but not exiting the device. When the plastic particles are poured into the interior of the screening box 1, the situation in which the plastic particles bounce out to the outside of the screening box 1 due to the rebound of the plastic particles contacting the screen can be reduced. At the same time, the limit block 41 is set to limit the baffle 4, and the position of the baffle 4 is controlled to be always at the bottom of the feed port 11, thereby improving the sealing performance of the baffle 4.

[0029] Further, such as Figure 5 As shown, the top of the water tank 23 is fixedly connected to a second screen 5; the water inlet end of the water pump 25 is fixedly connected to a plurality of third screens 51; the positions of the plurality of third screens 51 are parallel to each other and the internal screen holes thereof are staggered; when working, the screen hole size of the second screen 5 is denser and smaller than the screen hole size of the first screen 14, and when the water flows into the water tank 23 through the second screen 5, it plays a primary filtering role, and the screen hole size of the third screen 51 is denser and smaller than the screen hole size of the second screen 5, and the third screens 51 are staggered. At the water inlet end of the water pump 25, when the water flows into the water storage barrel 2 through the water pump 25, it plays a filtering role again. In this step, by setting the second screen 5, the impurities in the water flow can be filtered once when the water flow cleans the plastic particles and flows into the water tank 23, so that the water remains in the water tank 23 and the impurities remain on the top of the second screen 5. By setting the third screen 51, the water in the water tank 23 can be further filtered multiple times, further reducing the residual impurities in the water flowing back into the water storage barrel 2.

[0030] Further, such as Figure 1 , Figure 3 and Figure 4 As shown, the outer wall of the screening box 1 is provided with an observation window 6; the observation window 6 is made of transparent material; in this step, by providing the observation window 6, when pouring the plastic particles into the screening box 1, the operation process of the screening box 1 can be more intuitively observed, and when plastic particles block the screen, the position can be manually adjusted, thereby further reducing the possibility of the screen being blocked due to large particles, and further improving the accuracy of screening particles.

[0031] Working principle: the staff pours the plastic particles into the screening box 1 from the feed port 11, and the support rod 13 starts to rotate under the drive of the motor 12, and the connecting rope 16 fixed in the middle also rotates accordingly. The magnetic ball 17 connected to the end of the connecting rope 16 is also constantly pulled and attracted by the magnetic block 15 on the inner wall of the screening box 1 under the action of centrifugal force. The water storage barrel 2 supplies water to the first water pipe 21, and then sprays the water into the screening box 1 through the water outlet pipe 22. The water will flow downward along the screen and flow into the water tank 23. The water in the water tank 23 will flow back to the water storage barrel 2 through the second water pipe 24 under the pumping of the water pump 25. The water outlet pipe 22 sprays water into the screening box 1, and the fixing ring 3 is fixed to the middle of the water outlet pipe 22 and is fixed to the fixing rod 31, and the fixing ring 3 is fixed to the middle of the water outlet pipe 22 and is fixed to the fixing rod 31. The fixed rod 31 is fixedly connected to the first water conduit 21, and can fix the water outlet pipe 22. When the plastic particles are poured into the screening box 1, they must first enter through the feed port 11. A baffle 4 is provided at the bottom of the feed port 11. When the plastic particles pass through the baffle 4, the baffle 4 will be pressed downward. When all the plastic particles pass through the baffle 4, the rebound of the baffle 4 will be blocked by the limit block 41. The mesh size of the second screen 5 is denser and smaller than the mesh size of the first screen 14. When the water flows through the second screen 5 into the water tank 23, it plays a filtering role. The mesh size of the third screen 51 is denser and smaller than the mesh size of the second screen 5, and the third screen 51 is staggered at the water inlet end of the water pump 25. When the water flows through the water pump 25 into the water storage barrel 2, it plays a filtering role again.

[0032] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A plastic particle screening device, comprising a screening box (1); Features: The top of the screening box (1) is fixedly connected with a feed port (11); the bottom of the screening box (1) is provided with a motor (12); the inside of the screening box (1) is rotatably connected with a support rod (13); the output end of the motor (12) is meshed with the end of the support rod (13) through a bevel gear; the inner side wall of the screening box (1) is fixedly connected with a plurality of first screens (14) arranged in parallel; the apertures in the middle of the plurality of first screens (14) decrease from top to bottom; the inner wall of the screening box (1) is fixedly connected with a plurality of magnetic blocks (15); the magnetic blocks (15) are multiple and evenly distributed above each layer of the first screen (14); the outer wall of the support rod (13) is fixedly connected with a plurality of connecting ropes (16); the end of each connecting rope (16) is fixedly connected with a magnetic ball (17); the connecting ropes (16) and the magnetic balls (17) are multiple groups and are arranged corresponding to the magnetic blocks (15).

2. A plastic particle screening device according to claim 1, Features: The top of the screening box (1) is fixedly connected to a water storage barrel (2); a pair of first water pipes (21) are symmetrically provided on the outer wall of the water storage barrel (2); a plurality of water outlet pipes (22) are connected to the middle of the first water pipe (21); the water outlet pipes (22) are connected to the screening box (1) and penetrate into the interior of the screening box (1); the water outlet pipes (22) are arranged on the top of each layer of the first screen (14); the bottom of the screening box (1) is fixedly connected to a water tank (23); a water pump (25) is fixedly connected to a side wall of one side of the water tank (23); the top of the water storage barrel (2) is connected to a second water pipe (24); the water outlet end of the water pump (25) is connected to the end of the second water pipe (24).

3. A plastic particle screening device according to claim 2, Features: A fixing ring (3) is fixedly connected to the outer wall of each water outlet pipe (22); the fixing ring (3) is arranged inside the screening box (1); a fixing rod (31) is fixedly connected to the middle of each fixing ring (3); the fixing rod (31) passes through the screening box (1) and is fixedly connected to the middle of the first water conduit (21).

4. A plastic particle screening device according to claim 3, Features: The bottom end of the feed port (11) is rotatably connected to a baffle (4); a torsion spring is provided between the baffle (4) and the feed port (11); a pair of limit blocks (41) are fixedly connected to the inner wall of the feed port (11); the limit blocks (41) are provided at the top end of the opening and closing portion of the baffle (4).

5. A plastic particle screening device according to claim 4, Features: A second screen (5) is fixedly connected to the top of the water tank (23); a plurality of third screens (51) are fixedly connected to the water inlet end of the water pump (25); the positions of the plurality of third screens (51) are parallel to each other and the screen holes inside the third screens are staggered.

6. A plastic particle screening device according to claim 5, Features: The outer wall of the screening box (1) is provided with an observation window (6); the observation window (6) is made of a transparent material.

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