Plastic color master batch particle screening device

Abstract

The utility model discloses a plastic color masterbatch particle screening device, which relates to the field of screening equipment and comprises an inner cylinder, a middle cylinder and an outer cylinder which are sequentially and coaxially sleeved, the inner cylinder, the middle cylinder and the outer cylinder can be driven by driving equipment to rotate synchronously, an inner material channel is arranged in the inner cylinder, a middle material channel is arranged between the inner cylinder and the middle cylinder, and an outer material channel is arranged between the middle cylinder and the outer cylinder. An inner material channel, a middle material channel and an outer material channel are formed among the inner barrel, the middle barrel and the outer barrel, an inner spiral plate, a middle spiral plate and an outer spiral plate are arranged in the inner material channel, the middle material channel and the outer material channel respectively, a coarse screen is arranged on the surface of the inner barrel, and a fine screen is arranged on the surface of the middle barrel. Continuous screening of the color master batches is achieved, and continuous production and processing can be conveniently carried out through extrusion and granulation procedures matched with the color master batches.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment, and in particular to a screening device for plastic masterbatch particles. Background Technology

[0002] Color masterbatch is widely used as a dyeing agent for polymer materials. Color masterbatch is produced by extruding with a screw extruder and then granulating to form a granular form. The uniformity of the particles is an important indicator of the quality of color masterbatch. To ensure that the color masterbatch has a uniform particle size, it needs to be screened to obtain particles with uniform size.

[0003] Currently, the screening of color masterbatch is generally completed by independent vibrating screens, air screens, and other equipment. This requires feeding the color masterbatch into the screening equipment in batches, which is not convenient for continuous screening in conjunction with extruders and granulation processes. Utility Model Content

[0004] The purpose of this invention is to provide a plastic masterbatch granule screening device to solve the problem that existing masterbatch screening equipment screens masterbatch in batch processing, which is not convenient for continuous screening in conjunction with extruders and granulation processes.

[0005] To address the problems existing in the prior art, the technical solution of this utility model is as follows:

[0006] A plastic masterbatch granule screening device includes an inner cylinder, a middle cylinder, and an outer cylinder coaxially arranged in sequence. The inner cylinder, middle cylinder, and outer cylinder can be driven to rotate synchronously by a driving device. The interior of the inner cylinder is an inner material channel, the space between the inner cylinder and the middle cylinder is a middle material channel, and the space between the middle cylinder and the outer cylinder is an outer material channel. An inner spiral plate, a middle spiral plate, and an outer spiral plate are respectively arranged in the inner material channel, the middle material channel, and the outer material channel. The surface of the inner cylinder is a coarse screen, and the surface of the middle cylinder is a fine screen.

[0007] Preferably, the rotation direction of the middle spiral plate is opposite to that of the outer spiral plate and the inner spiral plate.

[0008] Preferably, the ports of the inner material channel all protrude beyond the ports of the outer material channel and the middle material channel.

[0009] Preferably, the inlet port of the inner material channel has a narrowing plate.

[0010] Preferably, the pitch of the inner spiral plate, the middle spiral plate, and the outer spiral plate increases sequentially.

[0011] Preferably, the driving device includes a motor and a bracket, the outer cylinder is rotatably supported by the bracket, the surface of the outer cylinder has a toothed ring, and the output shaft of the motor is connected to the toothed ring through gear meshing.

[0012] Preferably, the output shaft of the motor is equipped with a speed reducer.

[0013] Compared with related technologies, this utility model has the following beneficial effects:

[0014] This invention uses the inner, middle, and outer material channels formed between the inner, middle, and outer cylinders to screen the masterbatch, and uses the inner, middle, and outer spiral plates to conduct the masterbatch, thus achieving continuous screening of the masterbatch. This allows for continuous production and processing using the matching extrusion and granulation processes. Attached Figure Description

[0015] Figure 1 This is one of the overall structural schematic diagrams of this utility model.

[0016] Figure 2 This is the second schematic diagram of the overall structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of this utility model.

[0018] Reference numerals: 1. Outer cylinder; 11. Outer spiral plate; 12. Narrowing plate; 2. Middle cylinder; 21. Middle spiral plate; 3. Inner cylinder; 31. Inner spiral plate; 4. Motor; 41. Gear ring; 5. Support; 6. Outer material channel; 7. Middle material channel; 8. Inner material channel. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1-3 As shown, the plastic masterbatch granule screening device includes an inner cylinder 3, a middle cylinder 2, and an outer cylinder 1 made of stainless steel. The surface of the inner cylinder 3 is a coarse screen, and the surface of the middle cylinder 2 is a fine screen. The middle cylinder 2 is fitted outside the inner cylinder 3, and the outer cylinder 1 is fitted outside the middle cylinder 2, so that the inner cylinder 3, the middle cylinder 2, and the outer cylinder 1 are coaxially distributed. Inside the inner cylinder 3 is an inner material channel 8, between the inner cylinder 3 and the middle cylinder 2 is a middle material channel 7, and between the middle cylinder 2 and the outer cylinder 1 is an outer material channel 6. An inner spiral plate 31, a middle spiral plate 21, and an outer spiral plate 11 are respectively installed in the inner material channel 8, the middle material channel 7, and the outer material channel 6. The inner cylinder 3, the middle cylinder 2, and the outer cylinder 1 are fixedly connected by the inner spiral plate 31, the middle spiral plate 21, and the outer spiral plate 11 to form a stable integrated structure.

[0021] The drive device includes a motor 4 and a bracket 5. The outer cylinder 1 is rotatably supported by the bracket 5. A gear ring 41 is fixedly installed on the surface of the outer cylinder 1. The output shaft of the motor 4 is connected to the gear ring 41 through gear meshing.

[0022] The equipment is placed at the rear end of the granulation process. The granulated masterbatch continuously enters the inner material channel 8 from the left end of the inner cylinder 3. The left end of the inner cylinder 3 has a constriction plate 12 to prevent the masterbatch from spilling out. The motor 4 is turned on to drive the outer cylinder 1, middle cylinder 2 and inner cylinder 3 to rotate synchronously. The masterbatch is carried in the inner material channel 8 by the push of the inner spiral plate 31. The coarse screen of the inner cylinder 3 separates the large-sized material into the inner material channel 8, while the small-sized material enters the middle material channel 7. The spiral push of the middle spiral plate 21 causes the small-sized material to be carried along the middle material channel 7 and then separated by the fine screen. The broken material enters the outer material channel 6 and is discharged from the outer material channel 6 by the outer spiral plate 11. The inner spiral plate 31 discharges the large-sized material from the inner material channel 8, while the middle material channel 7 discharges masterbatch with qualified and uniform size.

[0023] The rotation direction of the middle spiral plate 21 is opposite to that of the outer spiral plate 11 and the inner spiral plate 31, and the port of the inner material channel 8 protrudes from the port of the outer material channel 6 and the middle material channel 7, so that the discharge direction of the middle material channel 7 is opposite to that of the discharge direction of the outer material channel 6 and the inner material channel 8, which facilitates the separate collection of color masterbatch with qualified size and color masterbatch with unqualified size.

[0024] The pitch of the inner spiral plate 31, the middle spiral plate 21, and the outer spiral plate 11 increases sequentially. The masterbatch first enters the inner material channel 8, and then enters the middle material channel 7 and the outer material channel 6 after screening. Therefore, the amount of masterbatch in the inner material channel 8, the middle material channel 7, and the outer material channel 6 decreases sequentially. The small pitch of the inner spiral plate 31 can reduce the speed of pushing the masterbatch, which facilitates the full screening of the masterbatch. As the amount of masterbatch in the middle material channel 7 and the outer material channel 6 gradually decreases, the pitch of the middle spiral plate 21 and the outer spiral plate 11 increases sequentially, thereby improving the discharge efficiency.

[0025] A speed reducer is installed on the output shaft of motor 4 to reduce the speed of motor 4, so that the inner cylinder 3, middle cylinder 2 and outer cylinder 1 maintain a stable speed.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic masterbatch granule screening device, comprising an inner cylinder (3), a middle cylinder (2), and an outer cylinder (1) coaxially arranged in sequence, wherein the inner cylinder (3), the middle cylinder (2), and the outer cylinder (1) can be driven to rotate synchronously by a driving device, characterized in that, The inner cylinder (3) has an inner material channel (8) inside, the middle material channel (7) is between the inner cylinder (3) and the middle cylinder (2), and the outer material channel (6) is between the middle cylinder (2) and the outer cylinder (1). The inner material channel (8), the middle material channel (7), and the outer material channel (6) are respectively provided with an inner spiral plate (31), a middle spiral plate (21), and an outer spiral plate (11). The surface of the inner cylinder (3) is a coarse screen, and the surface of the middle cylinder (2) is a fine screen.

2. The plastic masterbatch granule screening device according to claim 1, characterized in that, The direction of rotation of the middle spiral plate (21) is opposite to that of the outer spiral plate (11) and the inner spiral plate (31).

3. The plastic masterbatch granule screening device according to claim 2, characterized in that, The ports of the inner material channel (8) all protrude from the ports of the outer material channel (6) and the middle material channel (7).

4. The plastic masterbatch granule screening device according to claim 1, characterized in that, The material inlet of the inner material channel (8) has a narrowing plate (12).

5. The plastic masterbatch granule screening device according to claim 1, characterized in that, The pitch of the inner spiral plate (31), the middle spiral plate (21), and the outer spiral plate (11) increases sequentially.

6. The plastic masterbatch granule screening device according to claim 1, characterized in that, The driving device includes a motor (4) and a bracket (5). The outer cylinder (1) is rotatably supported by the bracket (5). The surface of the outer cylinder (1) has a toothed ring (41). The output shaft of the motor (4) is connected to the toothed ring (41) through gear meshing.

7. The plastic masterbatch granule screening device according to claim 6, characterized in that, The output shaft of the motor (4) is equipped with a speed reducer.

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