Dust removal device of printing machine

Abstract

The utility model provides a printing machine dust removal device which comprises a dust removal device body and a negative pressure fan, an air inlet of the negative pressure fan is communicated with negative pressure dust removal units on a printing machine through a first three-way valve, and an air outlet of the negative pressure fan is communicated with the dust removal device body through a second three-way valve. A hinged upper cover is arranged on a box body in the dust removal device, a filter cartridge is fixedly arranged in the box body, a sliding dust removal pipe is arranged on the upper cover, a spray head is arranged at the end of the dust removal pipe and moves in the filter cartridge, and a second three-way valve is communicated with the dust removal pipe through a hose and used for blowing air to remove dust on the filter cartridge. According to the novel printing machine dust removal device, through the functions of automatic dust removal, continuous operation capacity, efficient dust treatment and the like, the problems existing in a traditional dust removal device are effectively solved, and the production efficiency and maintenance convenience are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of dust removal, in particular to a dust removal device for a printing press. Background Art

[0002] The dust removal devices used in traditional printing presses have the following problems: Existing dust removal devices need to be cleaned and maintained regularly to maintain their normal working efficiency. Cleaning and maintenance usually require shutdown operations, which increases the time of production downtime and affects the overall production efficiency. The filter elements in the dust removal device need to be cleaned or replaced manually. Manual cleaning is not only time-consuming and labor-intensive, but also prone to operating errors, which shortens the service life of the equipment. Frequent maintenance and replacement of filter elements will increase additional costs. These costs include labor costs, material costs, and the cost of repairing equipment damage that may be caused by improper maintenance. The need to shut down for maintenance regularly limits the continuous operation time of the printing press and reduces production efficiency. Over time, the clogging of the filter elements will lead to increased airflow resistance, which in turn reduces the dust removal effect. Utility Model Content

[0003] The main purpose of the utility model is to provide a dust removal device for a printing press to solve the problems in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: comprising a dust removal device and a negative pressure fan, the air inlet of the negative pressure fan is connected to each negative pressure dust removal unit on the printing press through a first three-way valve, and the air outlet is connected to the dust removal device through a second three-way valve;

[0005] A hinged upper cover is provided on the box body in the dust removal device, a filter cartridge is fixedly arranged in the box body, a sliding cleaning pipe is provided on the upper cover, a nozzle is provided at the end of the cleaning pipe, the nozzle is located in the filter cartridge and moves, and the second three-way valve is connected to the cleaning pipe through a hose for blowing air to remove dust on the filter cartridge.

[0006] Preferably, one end of the upper cover is hinged to the box body through a pin, and the other end is fixedly connected to the box body through a locking device.

[0007] Preferably, an adjustment seat is fixed on the top of the upper cover, and the cleaning pipe slides against the adjustment seat. A rack is fixed on one side of the cleaning pipe, and a gear meshing with the rack is provided on one side of the rack. Both ends of the gear can rotate against the adjustment seat through bearings. A motor is fixed on one side of the adjustment seat, and the motor output shaft is connected to the gear.

[0008] Preferably, an exhaust port is provided on one side of the upper cover, an ash inlet is provided on one side of the box body, the filter cartridge is arranged between the ash inlet and the exhaust port, and the second three-way valve is connected to the ash inlet through a pipeline.

[0009] Preferably, an ash discharge port is provided at the end of the cone bucket at the bottom of the box body, a screw conveyor is provided at the ash discharge port, and a hinged flap valve is provided at the end outlet of the screw conveyor.

[0010] The utility model provides a dust removal device for a printing press, which has the following beneficial effects:

[0011] 1. Automatic dust cleaning of the filter cartridge is realized without manual intervention, saving time and labor. The motor drives the gear and rack to automatically move the dust cleaning pipe up and down to ensure that the dust on the surface of the filter cartridge is evenly removed.

[0012] 2. The design allows the dust removal device to operate continuously for a long time without frequent shutdowns for maintenance. The automated dust removal process reduces the maintenance frequency and improves the overall operating efficiency of the equipment. The dust can be compressed by the screw conveyor, which reduces the volume of the dust and facilitates storage and transportation. The flap valve design can easily remove the compressed dust while preventing dust backflow.

[0013] 3. By switching between the first three-way valve and the second three-way valve, the airflow direction can be flexibly controlled to ensure the stable operation of the system. This design helps to quickly switch between different working modes and improves the adaptability and flexibility of the system.

[0014] 4. Reduced need for manual intervention, reduced possibility of operating errors, and help extend the service life of the equipment. More efficient dust handling also helps reduce equipment wear and extend the replacement cycle of major components. By reducing maintenance time and improving equipment stability, production efficiency is significantly improved. Automated dust cleaning and efficient dust handling ensure that the equipment is always in optimal working condition, thereby improving overall production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a front cross-sectional view of the dust removal device of the utility model;

[0018] In the figure: negative pressure dust removal unit 1; first three-way valve 2; hose 3; negative pressure fan 4; second three-way valve 5; dust removal device 6; box body 601; upper cover 602; ash inlet 603; ash outlet 604; screw conveyor 605; adjustment seat 606; gear 607; ash cleaning pipe 608; rack 609; exhaust port 610; filter cartridge 611; flap valve 612. DETAILED DESCRIPTION

[0019] like Figure 1~2As shown, a dust removal device for a printing press comprises a dust removal device 6 and a negative pressure fan 4, wherein the air inlet of the negative pressure fan 4 is connected to each negative pressure dust removal unit 1 on the printing press through a first three-way valve 2, and the air outlet is connected to the dust removal device 6 through a second three-way valve 5;

[0020] The box body 601 in the dust removal device 6 is provided with a hinged upper cover 602, a filter cartridge 611 is fixedly provided in the box body 601, a sliding dust cleaning pipe 608 is provided on the upper cover 602, a nozzle is provided at the end of the dust cleaning pipe 608, the nozzle is located in the filter cartridge 611 and moves, and the second three-way valve 5 is connected to the dust cleaning pipe 608 through the hose 3, which is used to blow air to remove dust on the filter cartridge 611. The other port of the first three-way valve 2 is connected to the atmosphere. When it is necessary to remove dust on the filter cartridge 611, the first three-way valve 2 is switched to be connected to the atmosphere, and the second three-way valve 5 is switched to be connected to the dust cleaning pipe 608, and clean air is introduced into the dust cleaning pipe 608 through the negative pressure fan 4. The sliding dust cleaning pipe 608 drives the nozzle located in the filter cartridge 611 to move up and down, so that the dust attached to the outer surface of the filter cartridge 611 can be blown off and the filter cartridge 611 can be restored to use.

[0021] The negative pressure fan 4 is used to create a negative pressure environment to suck dust into the dust removal system. The first three-way valve 2 connects the air inlet of the negative pressure fan with multiple negative pressure dust removal units 1 on the printing press. The other port is connected to the atmosphere and is used to switch the direction of the airflow. The second three-way valve 5 connects the air outlet of the negative pressure fan with the dust removal device 6. It is used to switch the airflow direction to the dust removal device or the cleaning pipe 608. The dust removal device 6 includes a box body 601 with a hinged upper cover 602. A filter cartridge 611 is installed in the box body to capture dust. The cleaning pipe 608 is installed on the upper cover 602 and can slide. A nozzle is installed at the end of the cleaning pipe, and the nozzle can move inside the filter cartridge. The nozzle can discharge air in a circular shape to clean the filter cartridge. The second three-way valve 5 is connected to the cleaning pipe 608 through a hose 3.

[0022] Normal working state: the negative pressure fan 4 is running, and each negative pressure dust removal unit 1 is connected through the first three-way valve 2. The dust is absorbed into the filter cartridge 611 in the dust removal device 6.

[0023] Dust removal process: When the filter cartridge 611 needs to be cleaned, the first three-way valve 2 is switched to connect it to the atmosphere. At the same time, the second three-way valve 5 is switched to connect to the dust removal pipe 608. The airflow generated by the negative pressure fan 4 enters the dust removal pipe 608 through the hose 3. The dust removal pipe 608 slides, driving the nozzle to move inside the filter cartridge 611 to blow off the dust.

[0024] Preferably, one end of the upper cover 602 is hinged to the box body 601 through a pin, and the other end is fixedly connected to the box body 601 through a locking device. The upper cover 602 can be hingedly opened by unlocking the locking device, which is convenient for maintenance, inspection and replacement of the filter cartridge 611.

[0025] Preferably, an adjustment seat 606 is fixedly provided on the top of the upper cover 602, and a cleaning pipe 608 slides against the adjustment seat 606. A rack 609 is fixedly provided on one side of the cleaning pipe 608, and a gear 607 meshing with the rack 609 is provided on one side. Both ends of the gear 607 can rotate against the adjustment seat 606 through bearings. A motor is fixedly provided on one side of the adjustment seat 606, and the output shaft of the motor is connected to the gear 607.

[0026] The motor drives the gear 607 to rotate, thereby driving the rack 609 and the cleaning pipe 608 to move up and down, so that the nozzle at the end of the cleaning pipe 608 moves up and down in the filter cartridge 611. The nozzle can discharge air in a circular shape, and the up and down movement can cover the entire filter cartridge 611.

[0027] The adjustment seat 606 is fixed on the top of the upper cover 602. It is used to support the cleaning pipe 608 and other related parts. The cleaning pipe 608 is against the adjustment seat 606 and can slide in the vertical direction. A nozzle is installed at the end to blow clean air into the filter cartridge 611. The rack 609 is fixed on one side of the cleaning pipe 608. The rack is engaged with the gear 607, and when the gear rotates, the rack moves with it. The gear 607 is installed in the adjustment seat 606 through a bearing, can rotate freely, and is engaged with the rack 609, and the rack 609 is driven to move up and down by its rotation. The motor is fixed on one side of the adjustment seat 606. The output shaft is connected to the gear 607, and the gear 607 is driven to rotate by the forward and reverse rotation of the motor.

[0028] Cleaning process: When the filter cartridge 611 needs to be cleaned, the first three-way valve 2 is switched to connect it to the atmosphere, and the second three-way valve 5 is switched to connect to the cleaning pipe 608. The airflow generated by the negative pressure fan 4 enters the cleaning pipe 608 through the hose 3. The motor is started to drive the gear 607 to rotate. When the gear 607 rotates, it meshes with the rack 609, driving the cleaning pipe 608 to move up and down. The nozzle at the end of the cleaning pipe 608 moves up and down inside the filter cartridge 611 to blow off the dust. The nozzle can discharge air in a circular shape to ensure that the entire inner surface of the filter cartridge 611 is covered.

[0029] Preferably, an exhaust port 610 is provided on one side of the upper cover 602, an ash inlet 603 is provided on one side of the box body 601, a filter cartridge 611 is provided between the ash inlet 603 and the exhaust port 610, and the second three-way valve 5 is connected to the ash inlet 603 through a pipeline. The negative pressure fan 4 absorbs dust and enters from the ash inlet 603, and the dust is filtered by the filter cartridge 611 and falls on the bottom of the box body 601, and the gas is discharged from the exhaust port 610.

[0030] Preferably, an ash discharge port 604 is provided at the end of the cone bucket at the bottom of the box 601, and a screw conveyor 605 is provided at the ash discharge port 604. A hinged flap valve 612 is provided at the end outlet of the screw conveyor 605. The filtered dust enters the screw conveyor 605 from the ash discharge port 604, and the dust can be compressed by the screw conveyor 605. The compressed dust can be removed by opening the flap valve 612. During the dust cleaning process, the dust on the filter cartridge 611 is blown off to the bottom of the box 601. Due to the conical design of the bottom of the box 601, the dust will naturally slide along the conical surface to the ash discharge port 604.

[0031] The screw conveyor 605 below the dust discharge port 604 starts to operate, sucking in and compressing the dust. The compressed dust reaches the end of the screw conveyor 605. The flap valve 612 is opened, and the compressed dust is removed from the system.

[0032] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A dust removal device for a printing press, characterized in that: It comprises a dust removal device (6) and a negative pressure fan (4), wherein the air inlet of the negative pressure fan (4) is connected to each negative pressure dust removal unit (1) on the printing press through a first three-way valve (2), and the air outlet is connected to the dust removal device (6) through a second three-way valve (5); A hinged upper cover (602) is provided on the box body (601) in the dust removal device (6), a filter cartridge (611) is fixedly provided in the box body (601), a sliding dust cleaning pipe (608) is provided on the upper cover (602), a nozzle is provided at the end of the dust cleaning pipe (608), the nozzle is located in the filter cartridge (611) and moves, and the second three-way valve (5) is connected to the dust cleaning pipe (608) through a hose (3) for blowing away dust on the filter cartridge (611).

2. A dust removal device for a printing press according to claim 1, characterized in that: One end of the upper cover (602) is hinged to the box body (601) via a pin, and the other end is fixedly connected to the box body (601) via a locking device.

3. A dust removal device for a printing press according to claim 1, characterized in that: An adjustment seat (606) is fixedly provided on the top of the upper cover (602), and a cleaning pipe (608) slides against the adjustment seat (606). A rack (609) is fixedly provided on one side of the cleaning pipe (608), and a gear (607) meshing with the rack (609) is provided on one side of the rack (609). Both ends of the gear (607) can rotate against the adjustment seat (606) through bearings. A motor is fixedly provided on one side of the adjustment seat (606), and the output shaft of the motor is connected to the gear (607).

4. A dust removal device for a printing press according to claim 1, characterized in that: An exhaust port (610) is provided on one side of the upper cover (602), an ash inlet (603) is provided on one side of the box body (601), a filter cartridge (611) is provided between the ash inlet (603) and the exhaust port (610), and a second three-way valve (5) is connected to the ash inlet (603) via a pipeline.

5. The dust removal device for a printing press according to claim 1, characterized in that: An ash discharge port (604) is provided at the end of the cone bucket at the bottom of the box body (601), a screw conveyor (605) is provided at the ash discharge port (604), and a hinged flap valve (612) is provided at the end outlet of the screw conveyor (605).

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