Dust removal device for polyester film production

Abstract

The utility model discloses a dust removal device for polyester film production, which comprises a dust removal box body, and the left side and the right side of the dust removal box body are respectively provided with a through hole for a polyester film to transversely penetrate through; two dust collection rubber rollers which are arranged up and down are mounted in the dust removal box body, the two dust collection rubber rollers are distributed on the two sides of the polyester film, the roller surfaces of the dust collection rubber rollers are in contact with the polyester film, and a plurality of electrostatic emission rods which are distributed circumferentially are arranged in the dust collection rubber rollers; roller brushes, dust collection hoppers and dust collection pipes are sequentially arranged on the opposite outer sides of the two dust collection rubber rollers; the roller brush is located in a V-shaped cavity of the dust hopper, and a gap is formed between the dust hopper and the dust collecting pipe. According to the dust removal device for polyester film production, synchronous dust removal treatment on the front face and the back face of a polyester film can be achieved, and thorough dust removal is guaranteed.

Description

Technical Field

[0001] This utility model relates to a dust removal device for polyester film production, belonging to the field of polyester film production technology. Background Technology

[0002] Polyester film (PET) is a film material made from polyethylene terephthalate (PET) through extrusion to form thick sheets, which are then stretched. Because some dust inevitably accumulates on the surface of polyester film during production due to electrostatic adsorption, natural shedding, and slitting residue, specialized dust removal equipment is required to maintain its surface cleanliness.

[0003] Patent No. CN201721246173.7 discloses a thin-film electrostatic dust removal device, including an electrostatic dust-collecting roller, a dust collection box, and an electrostatic generator installed on the thin-film conveying path of the equipment frame. The electrostatic dust-collecting roller is rotatably fitted on the equipment frame and driven to rotate by a motor. The top side of the roller surface of the electrostatic dust-collecting roller contacts the thin film. Several electrostatic emission rods are distributed axially inside the electrostatic dust-collecting roller. The several electrostatic emission rods are evenly distributed on the same circumference of the cross-section of the electrostatic dust-collecting roller. The electrodes on both sides of each electrostatic emission rod are exposed on both sides of the electrostatic dust-collecting roller. The electrostatic generator uses its contact frame to make two electrode contacts elastically contact the electrodes of the electrostatic emission rods located at the upper position on both sides of the electrostatic dust-collecting roller. The dust collection box is located below the electrostatic dust-collecting roller.

[0004] Based on practical experience, the following technical problems still exist regarding the technical solutions disclosed in the aforementioned patent documents:

[0005] The electrostatic dust removal device disclosed in the aforementioned patent documents can only remove dust from one side of the film. Since both sides of the polyester film are dusty during the production process, the aforementioned electrostatic dust removal device has the problem of incomplete dust removal and low practicality.

[0006] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0007] This invention addresses the shortcomings of the prior art by providing a dust removal device for polyester film production, which can simultaneously remove dust from both sides of the polyester film, ensuring thorough dust removal.

[0008] To solve the above technical problems, the present invention adopts the following technical solution:

[0009] A dust removal device for polyester film production includes a dust removal box with through holes on both the left and right sides for transverse passage of the polyester film. Inside the dust removal box are two suction rollers arranged vertically, positioned on either side of the polyester film. The roller surfaces of the suction rollers contact the polyester film, and multiple electrostatic emission rods are arranged circumferentially inside each suction roller. Roller brushes, dust collection hoppers, and dust collection pipes are sequentially arranged on opposite outer sides of the two suction rollers. The roller brushes are located within the V-shaped cavity of the dust collection hopper, and a gap is provided between the dust collection hopper and the dust collection pipe.

[0010] Furthermore, input rollers and output rollers are rotatably mounted on the outer walls of the left and right sides of the dust collector, and the input rollers and output rollers are located outside the through holes.

[0011] Furthermore, the center line of the electrostatic emitter is set parallel to the center line of the suction roller, and the electrostatic emitter rotates synchronously with the suction roller.

[0012] Furthermore, the electrostatic emitter on the side of the suction roller closer to the polyester film is energized, while the electrostatic emitter on the side of the suction roller farther from the polyester film is de-energized.

[0013] Furthermore, the two suction rollers are synchronously driven by stepper motors, and the two suction rollers rotate in the same direction.

[0014] Furthermore, the roller brushes are in contact with the roller surface of the dust-collecting rubber roller, and the two roller brushes are synchronously driven by a drive motor, with the two roller brushes rotating in the same direction.

[0015] Furthermore, the dust collection hopper above the polyester film has an inverted V-shaped structure, with the bottom end of the inverted V-shaped structure fixed to the inner wall of the dust collection box.

[0016] Furthermore, the dust collection hopper below the polyester film has a V-shaped structure, with the top of the V-shaped structure fixed to the inner wall of the dust collection box.

[0017] Furthermore, the end of the dust collection pipe is connected to a negative pressure suction device, which sucks the dust out of the dust collection box.

[0018] Furthermore, the gap connects the dust collection hopper to the inner cavity of the dust collection pipe.

[0019] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0020] When performing dust removal, the stepper motor drives two suction rollers to rotate simultaneously. The electrostatic emitter, which is energized, attracts dust from the polyester film to the roller surface of the suction rollers. The drive motor drives two roller brushes to rotate simultaneously, sweeping off the dust that is de-energized from the roller surface of the suction rollers. The swept-off dust is collected in the dust collection hopper and sucked into the dust collection pipe through the gap, and finally sucked out of the dust removal box.

[0021] This invention enables simultaneous dust removal on both sides of a polyester film to ensure thorough dust removal and improve dust removal efficiency.

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the drive mechanism for the dust collection roller;

[0025] Figure 3 This is a schematic diagram of the roller brush drive.

[0026] In the figure, 1-dust collector box, 2-polyester film, 3-input roller, 4-output roller, 5-through hole, 6-dust suction roller, 7-electrostatic emitter, 8-stepper motor, 9-roller brush, 10-drive motor, 11-dust hopper, 12-dust collection pipe, 13-gap. Detailed Implementation

[0027] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0028] like Figures 1-3 As shown in the figure, this utility model provides a dust removal device for polyester film production, including a dust removal box 1. The left and right sides of the dust removal box 1 are respectively provided with through holes 5 for the transverse passage of polyester film 2. An input roller 3 and an output roller 4 are rotatably installed on the outer walls of the left and right sides of the dust removal box 1, and the input roller 3 and the output roller 4 are located outside the through holes 5.

[0029] The input roller 3 introduces the polyester film 2 into the dust collector 1 through the through hole 5, and the output roller 4 leads the polyester film 2 out of the dust collector 1 through the through hole 5. The front and back sides of the polyester film 2 are dusted inside the dust collector 1.

[0030] The dust collection box 1 is equipped with two suction rollers 6 arranged vertically. The two suction rollers 6 are distributed on both sides of the polyester film 2, and the roller surface of the suction rollers 6 contacts the polyester film 2.

[0031] The dust-collecting roller 6 has multiple electrostatic emission rods 7 arranged in a circular pattern inside. The center line of the electrostatic emission rods 7 is parallel to the center line of the dust-collecting roller 6, and the electrostatic emission rods 7 rotate synchronously with the dust-collecting roller 6.

[0032] The electrostatic emitter 7 inside the suction roller 6, on the side closest to the polyester film 2, is in an energized state. This energized emitter 7 attracts dust from the polyester film 2 onto the roller surface of the suction roller 6. The electrostatic emitter 7 on the side of the suction roller 6 furthest from the polyester film 2 is in a de-energized state.

[0033] The two suction rollers 6 are driven synchronously by the stepper motor 8, and the two suction rollers 6 rotate in the same direction.

[0034] Two dust-collecting rollers 6 are each provided with a roller brush 9, a dust collection hopper 11, and a dust collection pipe 12 on their opposite outer sides.

[0035] The roller brush 9 contacts the roller surface of the suction roller 6. The two roller brushes 9 are synchronously driven by a drive motor 10, and the two roller brushes 9 rotate in the same direction. The drive motor 10 drives the roller brushes 9 to rotate at high speed, sweeping away the dust that is in a de-energized state from the roller surface of the suction roller 6.

[0036] The dust collection hopper 11 above the polyester film 2 has an inverted V-shaped structure, and the bottom end of the inverted V-shaped structure is fixed to the inner wall of the dust collection box 1; the dust collection hopper 11 below the polyester film 2 has a V-shaped structure, and the top end of the V-shaped structure is fixed to the inner wall of the dust collection box 1.

[0037] The roller brush 9 is located inside the V-shaped cavity of the dust collection hopper 11.

[0038] A gap 13 is provided between the dust collection hopper 11 and the dust collection pipe 12, which connects the inner cavities of the dust collection hopper 11 and the dust collection pipe 12. The dust collected by the dust collection hopper 11 can be sucked into the dust collection pipe 12 through the gap 13. The end of the dust collection pipe 12 is connected to a negative pressure suction device, which sucks the dust out of the dust collection box 1.

[0039] The specific working principle of this utility model is as follows:

[0040] The input roller 3 introduces the polyester film 2 into the dust collector 1 through the through hole 5, and then leads it out of the dust collector 1 through the output roller 4. The front and back sides of the polyester film 2 are dusted inside the dust collector 1.

[0041] During dust removal, the stepper motor 8 drives the two suction rollers 6 to rotate simultaneously. The electrostatic emission rod 7, which is energized, attracts the dust on the polyester film 2 to the roller surface of the suction roller 6. The drive motor 10 drives the two roller brushes 9 to rotate simultaneously, sweeping off the dust that is de-energized on the roller surface of the suction roller 6. The swept-off dust is collected by the dust collection hopper 11 and sucked into the dust collection pipe 12 through the gap 13, and finally sucked out of the dust removal box 1.

[0042] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A dust removal device for polyester film production, characterized in that: The dust collector includes a dust collection box (1), with through holes (5) on the left and right sides for the polyester film (2) to pass through laterally. Inside the dust collection box (1), two suction rollers (6) are installed vertically. The two suction rollers (6) are distributed on both sides of the polyester film (2), and the roller surface of the suction rollers (6) contacts the polyester film (2). Inside the suction rollers (6), there are multiple electrostatic emission rods (7) arranged in a circular pattern. On the opposite outer sides of the two suction rollers (6), there are roller brushes (9), dust collection hoppers (11), and dust collection pipes (12) arranged in sequence. The roller brushes (9) are located in the V-shaped cavity of the dust collection hoppers (11), and there is a gap (13) between the dust collection hoppers (11) and the dust collection pipes (12).

2. The dust removal device for polyester film production as described in claim 1, characterized in that: An input roller (3) and an output roller (4) are rotatably installed on the outer walls of the left and right sides of the dust collector (1). The input roller (3) and the output roller (4) are located outside the through hole (5).

3. The dust removal device for polyester film production as described in claim 1, characterized in that: The center line of the electrostatic emitter (7) is set parallel to the center line of the dust-collecting roller (6), and the electrostatic emitter (7) rotates synchronously with the dust-collecting roller (6).

4. The dust removal device for polyester film production as described in claim 3, characterized in that: The electrostatic emission rod (7) inside the dust-collecting roller (6) on the side closer to the polyester film (2) is in an energized state, while the electrostatic emission rod (7) inside the dust-collecting roller (6) on the side farther away from the polyester film (2) is in a de-energized state.

5. The dust removal device for polyester film production as described in claim 1, characterized in that: The two suction rollers (6) are driven synchronously by a stepper motor (8), and the two suction rollers (6) rotate in the same direction.

6. The dust removal device for polyester film production as described in claim 1, characterized in that: The roller brush (9) is in contact with the roller surface of the dust suction roller (6). The two roller brushes (9) are driven synchronously by a drive motor (10), and the two roller brushes (9) have the same rotation direction.

7. The dust removal device for polyester film production as described in claim 1, characterized in that: The dust collection hopper (11) above the polyester film (2) has an inverted V-shaped structure, and the bottom end of the inverted V-shaped structure is fixed to the inner wall of the dust collection box (1).

8. The dust removal device for polyester film production as described in claim 1, characterized in that: The dust collection hopper (11) below the polyester film (2) has a V-shaped structure, and the top of the V-shaped structure is fixed to the inner wall of the dust collection box (1).

9. The dust removal device for polyester film production as described in claim 1, characterized in that: The end of the dust collection pipe (12) is connected to the negative pressure suction device, which sucks the dust out of the dust collection box (1).

10. The dust removal device for polyester film production as described in claim 1, characterized in that: The gap (13) connects the dust collection hopper (11) to the inner cavity of the dust collection pipe (12).

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