Screening assembly for PVC particle production

Abstract

The utility model discloses a screening assembly for PVC (polyvinyl chloride) particle production, which belongs to the technical field of PVC particle production equipment, and comprises a centrifugal tank, a built-in cavity arranged in the centrifugal tank, a centrifugal pot rotationally arranged in the built-in cavity, and a driving part for driving the centrifugal pot to rotate at a high speed, the material distributing rings are fixed on the vertical cambered surface in the centrifugal pot; and a material gathering area is defined between every two adjacent material distributing rings. According to the utility model, the PVC particles with different sizes can fall into material gathering areas with different heights by utilizing different centrifugal forces applied to the PVC particles with different sizes under the condition of the same linear speed; and then the PVC particles are produced through a material shoveling hopper, corresponding to the material gathering area, on the material shoveling base and conveyed into a specified containing piece outside the centrifugal pot through negative pressure suction force, multiple sets of PVC particles of different sizes can be screened out at a time, and the overall PVC particle screening efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC particle production equipment, in particular to a screening component for PVC particle production. Background Art

[0002] PVC, or polyvinyl chloride, is one of the most mass-produced synthetic polymer plastics and is widely used. To facilitate subsequent reprocessing and molding, PVC is typically processed into granules, serving as a base resin for melt mixing with other materials to create plastics with varying properties for use in various applications or work environments. Since the size of PVC granules varies significantly after molding, they must be separated by size through screening. Existing PVC granule screening assemblies struggle to accurately separate PVC granules into multiple groups based on size at once.

[0003] Existing patent application number: 202221101428.1 discloses a screening device for PVC cable granule production. This device uses the left and right reciprocating swinging motion of the screening plate to make the PVC granules slide on top of it, improving the PVC granule screening efficiency and effectively reducing the probability of PVC granules clogging the sieve holes on the screening plate. In the above-mentioned prior art, when screening PVC granules, this device can only coarsely filter the PVC granules into two groups of different sizes, and the above-mentioned technical problems still exist. Utility Model Content

[0004] The purpose of the utility model is to provide a screening component for PVC particle production to solve the problem in the above background technology that it is difficult to finely screen PVC particles into multiple groups according to size at one time.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a screening assembly for PVC particle production, comprising a centrifugal tank and a built-in cavity provided in the centrifugal tank, and the screening assembly for PVC particle production further comprises:

[0007] The centrifugal pot arranged in the built-in cavity is rotated.

[0008] A driving member is used to drive the centrifugal pot to rotate at high speed.

[0009] The dividing rings are fixed on the vertical arc surface in the centrifugal pot, and two adjacent dividing rings form a gathering area. When the PVC particles are pushed by the centrifugal force, PVC particles of different sizes slide down into the gathering areas at different positions under the push of the centrifugal force.

[0010] A hollow column is fixedly inserted into the centrifugal pot.

[0011] A plurality of straight-through pipes are fixedly plugged into the hollow column.

[0012] A shoveling seat is slidably sleeved on the outside of the straight-through pipe.

[0013] A connecting block is fixed on the shoveling seat.

[0014] A telescopic cylinder is provided between the connecting block and the hollow column, and is used for driving the shoveling seat to approach or move away from the material gathering area.

[0015] A plurality of shoveling buckets are arranged on the shoveling seat, and two ends of the shoveling buckets correspond to the material gathering area and the straight-through pipe respectively.

[0016] Furthermore, the screening assembly for PVC particle production also includes:

[0017] A suction pipe is provided between one end of the straight-through pipe and the interior of the hollow column, and is used for transporting the PVC particles to the outside of the centrifugal tank.

[0018] Furthermore, the screening assembly for PVC particle production also includes:

[0019] A top sealing cover is detachably arranged on the top of the centrifugal tank, one end of the suction pipe passes through a through hole arranged on the top sealing cover, and one end of the suction pipe is connected to a vacuum suction pump.

[0020] Furthermore, the screening assembly for PVC particle production also includes:

[0021] A fixing belt is fixed on the hollow column.

[0022] A feed pipe is fixedly inserted into the top cover, and one end of the feed pipe is fixedly sleeved in the fixing belt.

[0023] Furthermore, the screening assembly for PVC particle production also includes:

[0024] A material limiting ring is fixed in the centrifugal pot, and the material limiting ring is located between the top of the shoveling seat and the top sealing cover.

[0025] Furthermore, the shovel hopper is distributed along the radial direction of the centrifugal pot, the bottom end of the hollow column passes through the bottom of the centrifugal pot, and the bottom end of the hollow column is fixed in the built-in cavity.

[0026] Furthermore, the screening assembly for PVC particle production also includes:

[0027] A limiting guide ring is fixed to the outside of the centrifugal pot, and the limiting guide ring is connected to a limiting ring groove provided on the inner wall of the built-in cavity.

[0028] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0029] 1. The utility model drives the centrifugal pot to rotate at a certain angular velocity through a driving member, and cooperates with the use of dividing rings of different widths arranged on the vertical arc surface thereof. It can take advantage of the fact that PVC particles of different sizes will be subjected to different centrifugal forces under the same linear velocity condition, so that the PVC particles close to the inner wall of the centrifugal pot can be separated from small to large in the vertical direction from bottom to top by the dividing ring. Then, the telescopic cylinder is controlled to drive the shoveling seat and several shoveling hoppers on the shoveling seat to approach the inner wall of the centrifugal pot in the radial direction, and shovel the PVC particles in different aggregation areas according to classification and transport them out through vacuum suction. It can realize the one-time screening of multiple groups of PVC particles of different sizes, greatly improving the overall efficiency of PVC particle screening.

[0030] 2. The utility model uses centrifugal force to push PVC particles of different sizes up along the vertical arc surface in the centrifugal pot, and pushes PVC particles of different sizes into the gathering areas at different heights in the centrifugal pot, so as to group them in sequence according to size, improve the accuracy of screening grade, and compared with traditional screen screening, centrifugal screening will not have the problem of clogging and material jamming, further improving the screening efficiency of PVC particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a main sectional view of the utility model;

[0032] Figure 2 It is a partial left view of the hollow column in the utility model;

[0033] Figure 3 It is a top view of the present utility model.

[0034] In the figure: 1. Centrifugal tank; 2. Internal cavity; 3. Centrifugal pot; 4. Driving part; 5. Hollow column; 6. Straight pipe; 7. Suction pipe; 8. Shovel seat; 9. Shovel hopper; 10. Distribution ring; 11. Aggregation area; 12. Top cover; 13. Feed pipe; 14. Fixing belt; 15. Limiting ring groove; 16. Limiting guide ring; 17. Telescopic cylinder; 18. Connecting block; 19. Limiting ring. DETAILED DESCRIPTION

[0035] In order to enable people skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the present application will be clearly and completely described below in conjunction with the drawings in the embodiment of the present application.

[0036] like Figures 1 to 3 As shown, a screening assembly for PVC particle production includes a centrifugal tank 1 and a built-in cavity 2 provided in the centrifugal tank 1. The screening assembly for PVC particle production also includes:

[0037] The centrifugal pot 3 disposed in the built-in cavity 2 is rotated.

[0038] A driving member 4 is used to drive the centrifugal pot 3 to rotate at high speed. The driving member 4 includes a gear ring fixedly mounted on the outside of the centrifugal pot 3. A driving motor is fixedly mounted on the outside of the centrifugal pot 1. A spur gear is fixedly mounted on the output end of the driving motor. The tooth surface of the spur gear meshes with the tooth surface of the gear ring, so that the driving motor drives the centrifugal pot 3 to rotate at high speed.

[0039] The dividing rings 10 are fixed on the vertical arc surface in the centrifugal pot 3, and the adjacent dividing rings 10 form a gathering area 11. When the PVC particles are pushed by the centrifugal force, PVC particles of different sizes slide down into the gathering areas 11 at different positions under the push of the centrifugal force.

[0040] The hollow column 5 is fixedly inserted into the centrifugal pot 3 .

[0041] A plurality of straight-through pipes 6 are fixedly inserted into the hollow column 5 .

[0042] A shoveling seat 8 is slidably sleeved on the outside of the straight pipe 6.

[0043] The connecting block 18 is fixed on the shoveling seat 8.

[0044] The telescopic cylinder 17 is provided between the connecting block 18 and the hollow column 5 , and is used to drive the shoveling seat 8 to move closer to or away from the material gathering area 11 .

[0045] A plurality of shoveling buckets 9 are provided on the shoveling seat 8 , and two ends of the shoveling buckets 9 correspond to the material gathering area 11 and the straight pipe 6 respectively.

[0046] The centrifugal pot 3 is driven to rotate at a certain angular velocity by the driving member 4, and the use of the dividing rings 10 of different widths provided on the vertical arc surface thereof can be used. It can be used that PVC particles of different sizes are subjected to different centrifugal forces under the same linear velocity conditions, so that the PVC particles close to the inner wall of the centrifugal pot 3 can be separated by the dividing ring 10 from small to large in the vertical direction from bottom to top, and then the shoveling seat 8 and the several shoveling buckets 9 on the shoveling seat 8 are driven to approach the inner wall of the centrifugal pot 3 along the radial direction of the centrifugal pot 3 by controlling the telescopic cylinder 17, and the PVC particles in different aggregation areas 11 are classified and shoveled off and the produced PVC particles are transported out by vacuum suction, so that multiple groups of PVC particles of different sizes can be screened out at one time, greatly improving the overall efficiency of PVC particle screening.

[0047] In this embodiment, the screening assembly for PVC particle production further includes:

[0048] A suction pipe 7 is provided between one end of the straight pipe 6 and the interior of the hollow column 5 , and is used to transport the PVC particles to the outside of the centrifuge tank 1 .

[0049] Screening components for PVC granule production also include:

[0050] A top cover 12 is detachably provided on the top of the centrifuge tank 1, one end of the suction pipe 7 passes through a through hole provided on the top cover 12, and one end of the suction pipe 7 is connected to a vacuum suction pump, and the end of the suction pipe 7 is connected to a material holding piece so as to separately hold multiple groups of PVC particles screened out.

[0051] The vacuum pump and the suction pipe 7 can be used in conjunction to form a negative pressure suction force inside the shovel hopper 9, so that after the shovel hopper 9 scoops up the PVC particles in the gathering area 11, they are immediately sucked away by the negative pressure suction force and transported to the designated location, thereby improving the material collection efficiency.

[0052] In this embodiment, the screening assembly for PVC particle production further includes:

[0053] A fixing belt 14 fixed to the hollow column 5 .

[0054] A feed pipe 13 is fixedly inserted into the top cover 12, and one end of the feed pipe 13 is fixedly sleeved in the fixing belt 14, so as to achieve the effect of fixing the end of the feed pipe 13, avoid shaking of the end of the feed pipe 13 and affect the screening of PVC particles, and improve the stability of the PVC particle screening operation.

[0055] In this embodiment, the screening assembly for PVC particle production further includes:

[0056] The limiting ring 19 is fixed in the centrifugal pot 3 and is located between the top of the shoveling seat 8 and the top cover 12. The limiting ring 19 can effectively prevent the PVC particles from exceeding a certain height during the screening process, thereby preventing the PVC particles from leaking.

[0057] In this embodiment, the shovel hopper 9 is distributed along the radial direction of the centrifugal pot 3, the bottom end of the hollow column 5 passes through the bottom of the centrifugal pot 3, and the bottom end of the hollow column 5 is fixed in the built-in cavity 2. The centrifugal pot 3 and the hollow column 5 are coaxial. When the centrifugal pot 3 rotates, the centrifugal pot 3 rotates at a high speed relative to the hollow column 5, so that the shovel hopper 9 can scoop up the PVC particles attached to the vertical arc surface in the centrifugal pot 3 and transport them to the material holding member.

[0058] In this embodiment, the screening assembly for PVC particle production further includes:

[0059] The limiting guide ring 16 fixed to the outside of the centrifugal pot 3 and the limiting ring groove 15 provided on the inner wall of the built-in cavity 2 have a limiting effect on the limiting guide ring 16 by the limiting ring groove 15, thereby limiting the centrifugal pot 3 in the centrifugal tank 1, thereby preventing the centrifugal pot 3 from being axially displaced when rotating at high speed, thereby causing damage to parts or affecting the screening effect.

[0060] Working principle: By starting the conveying equipment and the feed pipe, the unscreened PVC particles are transported to the centrifugal pot 3, and the driving part 4 is started to drive the centrifugal pot 3 to rotate at a certain angular velocity and high speed, so that the PVC particles of different sizes in the centrifugal pot 3 are pushed by the centrifugal force of different sizes, so that the PVC particles of different sizes move up to different heights along the vertical arc surface in the centrifugal pot 3, so that the PVC particles of different sizes are distributed in different aggregation areas 11 from small to large along the vertical direction from bottom to top, so that the PVC particles can be screened into multiple groups of different sizes at one time, thereby improving the screening accuracy and efficiency. , and at regular intervals, start the telescopic cylinder 17 and the vacuum suction pump to drive the connecting block 18, the shoveling seat 8 and the shoveling hopper 9 to synchronously approach the inner wall of the centrifugal pot 3 until one side of the shoveling hopper 9 contacts the inner wall of the centrifugal pot 3, and make each shoveling hopper 9 correspond to each gathering area 11, so as to scoop up the PVC particles in each gathering area 11, and under the suction action of the vacuum suction pump, the PVC particles in each shoveling hopper 9 are transported to different material holding parts through the straight pipe 6 of the shoveling seat 8 and the suction pipe 7. By reciprocating the telescopic cylinder 17 and the vacuum suction pump, the PVC particles can be collected cyclically.

[0061] The above description is merely a preferred embodiment of the present invention. Any portion not described in the present invention may be implemented by adopting or drawing upon existing technologies. Of course, the above description is not intended to limit the present invention, nor is the present invention limited to the above examples. Any changes, modifications, additions, or substitutions made by those skilled in the art within the spirit and scope of the present invention shall also fall within the scope of protection of the present invention.

Claims

1. A screening assembly for PVC particle production, comprising a centrifugal tank (1) and a built-in cavity (2) provided in the centrifugal tank (1), characterized in that: The PVC particle production screening assembly also includes: Rotating a centrifugal pot (3) disposed in the built-in cavity (2); A driving member (4) for driving the centrifugal pot (3) to rotate at high speed; A material distribution ring (10) is fixed on the vertical arc surface in the centrifugal pot (3), and two adjacent material distribution rings (10) enclose a material gathering area (11). When the PVC particles are pushed by the centrifugal force, the PVC particles of different sizes slide down into the material gathering areas (11) at different positions under the push of the centrifugal force; A hollow column (5) fixedly inserted into the centrifugal pot (3); A plurality of straight-through pipes (6) fixedly plugged into the hollow column (5); a shoveling seat (8) slidably sleeved on the outside of the straight pipe (6); A connecting block (18) fixed on the shoveling seat (8); a telescopic cylinder (17) provided between the connecting block (18) and the hollow column (5), the telescopic cylinder (17) being used to drive the shoveling seat (8) to move closer to or away from the material gathering area (11); A plurality of shoveling buckets (9) are provided on the shoveling seat (8), and two ends of the shoveling buckets (9) correspond to the material gathering area (11) and the straight pipe (6) respectively.

2. The screening assembly for PVC particle production according to claim 1, characterized in that: The PVC particle production screening assembly also includes: A suction pipe (7) is provided between one end of the straight pipe (6) and the interior of the hollow column (5), and the suction pipe (7) is used to transport the PVC particles to the outside of the centrifugal tank (1).

3. The screening assembly for PVC particle production according to claim 2, characterized in that: The PVC particle production screening assembly also includes: A top cover (12) is detachably provided on the top of the centrifuge tank (1), one end of the suction pipe (7) passes through a through hole provided on the top cover (12), and one end of the suction pipe (7) is connected to a vacuum suction pump.

4. The screening assembly for PVC particle production according to claim 3, characterized in that: The PVC particle production screening assembly also includes: a fixing belt (14) fixed to the hollow column (5); A feed pipe (13) is fixedly inserted into the top cover (12), and one end of the feed pipe (13) is fixedly sleeved in the fixing belt (14).

5. The screening assembly for PVC particle production according to claim 4, characterized in that: The PVC particle production screening assembly also includes: A material limiting ring (19) is fixed in the centrifugal pot (3), and the material limiting ring (19) is located between the top of the shoveling seat (8) and the top cover (12).

6. The screening assembly for PVC particle production according to claim 5, characterized in that: The shovel hopper (9) is distributed along the radial direction of the centrifugal pot (3), the bottom end of the hollow column (5) passes through the bottom of the centrifugal pot (3), and the bottom end of the hollow column (5) is fixed in the built-in cavity (2).

7. The screening assembly for PVC particle production according to claim 6, characterized in that: The PVC particle production screening assembly also includes: A limiting guide ring (16) is fixed to the outside of the centrifugal pot (3), and the limiting guide ring (16) is connected to a limiting ring groove (15) provided on the inner wall of the built-in cavity (2).

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