Air suction drum wheel capable of regularly and automatically cleaning negative pressure cavity and cleaning system

Abstract

The utility model relates to an air suction drum wheel and a cleaning system of a timed self-cleaning negative pressure cavity, the air suction drum wheel comprises an air suction drum wheel body and a distribution valve disc, the air suction drum wheel body is a cylinder with a cylindrical structure, one end of the air suction drum wheel body is sealed, and a plurality of axial negative pressure cavities with openings are arranged on the side wall of the cylinder. A plurality of air suction holes corresponding to each negative pressure chamber are formed in the outer side surface of the cylinder body; the inner surface, opposite to the barrel, of the distribution valve disc is divided into a negative pressure conveying area, a positive pressure cleaning area and a work pause area in the circumferential direction, and a negative pressure air source hole and a positive pressure air source hole are formed in the distribution valve disc. According to the utility model, the positive pressure is provided for the cavity of the drum wheel in different areas and states, and the air pressure in the cavity is kept, so that various impurities are prevented from being attached to or entering the small air suction holes in the surface of the drum wheel, the probability of blockage of the air suction holes is reduced, the possibility of instability of conveying auxiliary materials or semi-finished products by equipment is reduced, and the working efficiency of equipment operation is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of cigarette production equipment, specifically relating to a suction drum and cleaning system for a timed self-cleaning negative pressure chamber. Background Technology

[0002] In existing cigarette production equipment, in order to maintain the continuous operation and conveying of auxiliary materials, semi-finished products, etc., a large number of rotary drum structures with suction function and circumferential segmentation to achieve different functions are adopted.

[0003] During the gluing and conveying process of box packaging paper in the ZB416 high-speed packaging machine, the third conveying drum has circumferentially distributed suction holes. According to relevant testing requirements, after the box packaging paper is sucked in by the first conveying drum and coated with adhesive by the second conveying drum, the adhesive-coated side faces the cylindrical surface of the third conveying drum and is adsorbed by the negative pressure in the suction holes, completing the conveying process. During conveying, adhesive (fine particles), fiber bundles, dust, etc., are influenced by the suction force within the negative pressure chamber of the third conveying drum and tend to enter the negative pressure chamber through the suction holes. In the current structure, when the box packaging paper is conveyed and in the negative pressure stop section, the aforementioned adhesive particles, fiber bundles, dust, etc., mix together and adhere to the walls of the suction holes, or are directly sucked into the negative pressure chamber. The accumulated impurities gradually clog the suction holes and even the main negative pressure pipeline, affecting subsequent box packaging paper conveying. Utility Model Content

[0004] The purpose of this invention is to provide a timed self-cleaning suction drum and cleaning system for a negative pressure chamber. When the equipment is operating normally, the system automatically cleans the negative pressure chamber of the suction drum in at least two modes using positive pressure, reducing the probability of shutdown caused by impurities clogging the suction holes and negative pressure pipelines of the suction drum during online operation.

[0005] To achieve the above objectives, this application employs the following technical solution:

[0006] A timed self-cleaning negative pressure chamber suction drum includes a suction drum body and a distribution valve disc that cooperates with the suction drum body. The suction drum body is a cylindrical cylinder with one end sealed. Multiple axial negative pressure chambers with openings at the other end face of the cylinder are provided on the side wall of the cylinder. Multiple suction holes are provided on the outer side of the cylinder corresponding to each negative pressure chamber.

[0007] The distribution valve disc is circular in shape, and its inner surface opposite to the cylinder is circumferentially divided into a negative pressure conveying area, a positive pressure cleaning area and a working stop area. The distribution valve disc is provided with a negative pressure air source hole that passes through the distribution valve disc and is connected to the negative pressure conveying area, and a positive pressure air source hole that is connected to the positive pressure cleaning area.

[0008] The negative pressure delivery zone, the positive pressure cleaning zone, and the work stop zone are sequentially connected to the negative pressure chamber.

[0009] Furthermore, the axial centerline of each negative pressure chamber is parallel to the axial centerline of the cylinder.

[0010] Furthermore, the center line connecting the multiple air intake holes that cooperate with each negative pressure chamber is parallel to the axial centerline of the negative pressure chamber.

[0011] Furthermore, both the negative pressure delivery zone and the positive pressure cleaning zone are arc-shaped recesses on the inner surface of the distribution valve disc.

[0012] Furthermore, the arc length of the positive pressure cleaning zone is greater than that of the negative pressure conveying zone.

[0013] A cleaning system includes a suction drum of a timed self-cleaning negative pressure chamber as described above, and further includes a regulating valve, a positive and negative pressure switching valve, and a pilot control valve.

[0014] The compressed air source is connected to the inlet of the regulating valve and the positive pressure inlet of the positive-negative pressure switching valve through pipelines, and the outlet of the regulating valve is connected to the positive pressure air source port through a pipeline.

[0015] The negative pressure air source is connected to the negative pressure inlet of the positive-negative pressure switching valve through a pipeline, and the outlet of the positive-negative pressure switching valve is connected to the negative pressure air source port through a pipeline.

[0016] The pilot control valve is connected to the actuator of the positive and negative pressure switching valve, and the control button is connected to the pilot control valve via a wire.

[0017] The beneficial effects of this utility model are:

[0018] This invention provides positive pressure to the drum chamber in a zoned and state-specific manner to maintain the air pressure inside the chamber. This prevents various impurities from adhering to or entering the suction holes on the drum surface, reducing the probability of suction hole blockage. As a result, it reduces the possibility of unstable conveying of auxiliary materials or semi-finished products by the equipment and improves the working efficiency of the equipment. Attached Figure Description

[0019] Figure 1 This is an exploded view of the suction drum of the timed self-cleaning negative pressure chamber of this utility model.

[0020] Figure 2 This is an exploded view of the suction drum of the timed self-cleaning negative pressure chamber of this utility model from another direction.

[0021] Figure 3 This is a schematic diagram of the cleaning system of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Suction drum body; 2. Distribution valve disc; 3. Positive and negative pressure conversion valve; 4. Pilot control valve; 5. Adjusting valve; 6. Control button; 11. Negative pressure chamber; 12. Suction port; 21. Negative pressure delivery zone; 22. Positive pressure cleaning zone; 23. Negative pressure air source port; 24. Positive pressure air source port. Detailed Implementation

[0024] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of this utility model, and should not be construed as limiting the technical solution of this utility model.

[0025] like Figure 1 and Figure 2 As shown, this application provides a suction drum for a timed self-cleaning negative pressure chamber, including a suction drum body 1 and a distribution valve disc 2 that cooperates with the suction drum body 1. The suction drum body 1 is a cylindrical cylinder with one end sealed. Multiple axial negative pressure chambers 11 with openings on the other end face of the cylinder are provided on the side wall of the cylinder. Multiple suction holes 12 are provided on the outer side of the cylinder corresponding to each negative pressure chamber.

[0026] The basic working principle of the suction drum in this application is the same as that of the currently used suction drums. During operation, the distribution valve disc remains stationary while the suction drum body rotates. Specifically, the structure that maintains a seal between the suction drum body and the distribution valve disc during rotation, as well as the power device that drives the suction drum body to rotate, refer to existing technology. This application uses the ZB416 high-speed packaging machine unit as an example for explanation. Those skilled in the art can refer to the connection, coordination, and transmission of the ZB416 high-speed packaging machine unit. The technical solution of this application only makes partial improvements to the suction drum body and the distribution valve disc. In the prior art, the negative pressure chamber on the side wall of the suction drum body is a single unit, corresponding to multiple rows of suction holes. This technical solution improves the negative pressure chamber by changing it from a single unit into multiple independent negative pressure chambers.

[0027] In this application, the axial centerline of each negative pressure chamber is parallel to the axial centerline of the cylinder. The line connecting the centers of the multiple air intake holes that mate with each negative pressure chamber is also parallel to the axial centerline of that negative pressure chamber.

[0028] In this application, the existing distribution valve disc is improved. The existing distribution valve disc only includes a negative pressure delivery area and a working pause area. After the improvement, the distribution valve disc is circular in shape. Its inner surface opposite to the cylinder is circumferentially divided into a negative pressure delivery area 21, a positive pressure cleaning area 22, and a working pause area. The working pause area is the inner surface of the distribution valve disc other than the negative pressure delivery area and the positive pressure cleaning area. A negative pressure air source hole 23 is provided on the distribution valve disc, which is connected to the negative pressure delivery area and a positive pressure air source hole 24 is connected to the positive pressure cleaning area. The negative pressure delivery area 21, the positive pressure cleaning area 22, and the working pause area are sequentially matched with the negative pressure chamber 11.

[0029] In this application, both the negative pressure conveying zone 21 and the positive pressure cleaning zone 22 are arc-shaped recesses provided on the inner surface of the distribution valve disc, with the arc length of the positive pressure cleaning zone being greater than that of the negative pressure conveying zone. A negative pressure air source is connected to the negative pressure conveying zone to provide suction for conveying the product, and a compressed air source is connected to the positive pressure cleaning zone to provide pressure for cleaning the drum chamber.

[0030] like Figure 3 As shown, this application provides a cleaning system, including a suction drum with a timed self-cleaning negative pressure chamber as described above, and also includes a regulating valve 5, a positive and negative pressure switching valve 3, and a pilot control valve 4.

[0031] The compressed air source is connected to the inlet of the regulating valve and the positive pressure inlet of the positive-negative pressure switching valve through pipelines. The outlet of the regulating valve is connected to the positive pressure air source port through a pipeline. The negative pressure air source is connected to the negative pressure inlet of the positive-negative pressure switching valve through a pipeline. The outlet of the positive-negative pressure switching valve is connected to the negative pressure air source port through a pipeline. The pilot control valve is connected to the actuator of the positive-negative pressure switching valve, and the control button is connected to the pilot control valve through a wire.

[0032] The specific working principle is as follows:

[0033] During operation, as the suction drum body rotates, the negative pressure chamber of the suction drum body sweeps across the negative pressure delivery area, positive pressure cleaning area, and work stop area of ​​the distribution valve disc through the openings corresponding to the distribution valve disc.

[0034] During normal operation, the positive / negative pressure switching valve activates, allowing the negative pressure air source to connect with the negative pressure delivery zone through the valve, pipeline, and negative pressure air source port, providing suction to the negative pressure delivery zone to complete the corresponding work. When control button 6 is pressed, the equipment stops operating. The pilot control valve receives a stop signal, causing the positive / negative pressure switching valve to activate, closing the negative pressure air source passage and connecting the compressed air source. This allows the compressed air source to connect with the negative pressure delivery zone through the pipeline, positive / negative pressure switching valve, and negative pressure air source port, maintaining a certain pressure in the negative pressure chamber corresponding to the negative pressure delivery zone. This prevents external adhesive particles, fiber bundles, dust, etc., from easily entering the negative pressure chamber through the suction port.

[0035] Another compressed air source is connected to the positive pressure clean area through pipelines, regulating valves, and positive pressure air source holes. Regardless of whether the equipment is working or stopped, it is connected to the positive pressure clean area, so that external adhesive particles, fiber bundles, dust, etc. cannot easily enter the negative pressure chamber through the suction hole.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A suction drum wheel for a timed self-cleaning negative pressure chamber, characterized in that, It includes a suction drum body and a distribution valve disc that cooperates with the suction drum body. The suction drum body is a cylindrical structure with one end sealed. Multiple axial negative pressure chambers with openings on the other end face of the cylinder are provided on the side wall of the cylinder. Multiple suction holes are provided on the outer side of the cylinder corresponding to each negative pressure chamber. The distribution valve disc is circular in shape, and its inner surface opposite to the cylinder is circumferentially divided into a negative pressure conveying area, a positive pressure cleaning area and a working stop area. The distribution valve disc is provided with a negative pressure air source hole that passes through the distribution valve disc and is connected to the negative pressure conveying area, and a positive pressure air source hole that is connected to the positive pressure cleaning area. The negative pressure delivery zone, the positive pressure cleaning zone, and the work stop zone are sequentially connected to the negative pressure chamber.

2. The suction drum of the timed self-cleaning negative pressure chamber according to claim 1, characterized in that, The axial centerline of each negative pressure chamber is parallel to the axial centerline of the cylinder.

3. The suction drum of the timed self-cleaning negative pressure chamber according to claim 2, characterized in that, The center line connecting the multiple air intake holes that mate with each negative pressure chamber is parallel to the axial centerline of that negative pressure chamber.

4. The suction drum of the timed self-cleaning negative pressure chamber according to claim 1, characterized in that, Both the negative pressure delivery zone and the positive pressure cleaning zone are arc-shaped recesses on the inner surface of the distribution valve disc.

5. The suction drum of the timed self-cleaning negative pressure chamber according to claim 4, characterized in that, The arc length of the positive pressure cleaning zone is greater than that of the negative pressure conveying zone.

6. A cleaning system, characterized in that, The suction drum of the timed self-cleaning negative pressure chamber, which includes any one of claims 1 to 5, further includes a regulating valve, a positive and negative pressure switching valve, and a pilot control valve. The compressed air source is connected to the inlet of the regulating valve and the positive pressure inlet of the positive-negative pressure switching valve through pipelines, and the outlet of the regulating valve is connected to the positive pressure air source port through a pipeline. The negative pressure air source is connected to the negative pressure inlet of the positive-negative pressure switching valve through a pipeline, and the outlet of the positive-negative pressure switching valve is connected to the negative pressure air source port through a pipeline. The pilot control valve is connected to the actuator of the positive and negative pressure switching valve, and the control button is connected to the pilot control valve via a wire.

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