A spray painting exhaust gas filtration device

Abstract

This utility model provides a spray exhaust gas filtration device, including a filter housing. An air inlet pipe is fixedly connected to one side of the filter housing. An electromagnetic valve is installed on the air inlet pipe. An air inlet secondary pipe, which communicates with the air inlet pipe, is installed at the lower end of the electromagnetic valve. A mounting shell is fixedly connected to the air inlet secondary pipe. A rotating shaft is rotatably fitted on the inner wall of the mounting shell. A centrifugal fan blade, which mates with the mounting shell, is fixedly connected to the upper end of the rotating shaft. By setting up an air inlet secondary pipe, centrifugal fan blade, rotating shaft, and a cleaning mechanism including sprockets, chains, gears, external gear rings, U-shaped frames, and cleaning brushes, when the filter cartridge surface needs cleaning, the exhaust gas can be redirected to drive the centrifugal fan blade to rotate, which in turn drives the cleaning brush to clean the filter cartridge through a series of transmission structures. This design eliminates the need for manual disassembly and cleaning of the filter cartridge, and the device can be operated continuously and stably without interruption during the cleaning process, effectively ensuring the continuous and stable operation of the device.

Description

Technical Field

[0001] This utility model relates to the field of spray painting exhaust gas treatment technology, specifically a spray painting exhaust gas filtration device. Background Technology

[0002] Industrial spraying operations generate waste gas containing a large amount of pollutants such as paint mist particles and volatile organic compounds. If this waste gas is directly emitted, it will not only cause serious environmental pollution, but also harm human health. Therefore, it is necessary to purify the spraying waste gas through a special filtration device to meet environmental emission requirements.

[0003] However, in the use of existing filtration devices, the paint mist particles are highly viscous and easily adhere to the surface of the filter cartridge, causing blockage. Cleaning requires manual disassembly of parts, which is cumbersome and laborious. In addition, the operation of the device must be stopped during the cleaning process, which forces the spraying operation to be interrupted and affects production efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a spray exhaust gas filtration device to solve the problems mentioned in the background. This utility model has a novel structure. By setting up an air inlet secondary pipe, centrifugal fan blades, a rotating shaft, and a cleaning mechanism including sprockets, chains, gears, an external gear ring, a U-shaped frame, and cleaning brushes, when the filter cartridge surface needs cleaning, the exhaust gas can be diverted to drive the centrifugal fan blades to rotate, and then drive the cleaning brushes to clean the filter cartridge through a series of transmission structures. This design eliminates the need for manual disassembly and cleaning of the filter cartridge, and the device can be operated continuously and stably without interruption during the cleaning process, effectively ensuring the continuous and stable operation of the device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a spraying exhaust gas filtration device, comprising a filter housing, an air inlet pipe fixedly connected to one side of the filter housing, an electromagnetic valve mounted on the air inlet pipe, an air inlet secondary pipe connected to the air inlet pipe at the lower end of the electromagnetic valve, an mounting shell fixedly connected to the air inlet secondary pipe, a rotating shaft rotatably fitted to the inner wall of the mounting shell, a centrifugal fan blade fitted to the upper end of the rotating shaft, a cleaning mechanism provided on the lower side of the inner wall of the filter housing, an L-shaped sealing plate fixedly connected to the inner wall of the filter housing, a filter cylinder provided on the upper side of the L-shaped sealing plate, an exhaust pipe fixedly connected to the other side of the filter housing, an activated carbon filter plate inserted into the upper side of the filter housing, and a snap-fit ​​mechanism provided on the upper side of the filter housing.

[0006] Furthermore, the lower end of the filter cartridge extends to the lower side of the L-shaped sealing plate, and the filter cartridge is fixedly connected to the upper side of the inner wall of the filter shell.

[0007] Furthermore, the cleaning mechanism includes an installation groove formed on the lower side of the inner wall of the filter housing, a transmission rod rotatably fitted on the upper side of the L-shaped sealing plate, a drive sprocket fixedly connected to the lower end of the rotating shaft extending into the interior of the installation groove, a driven sprocket fixedly connected to the lower end of the transmission rod extending into the interior of the installation groove, a chain provided between the drive sprocket and the driven sprocket, a gear fixedly connected to the upper end of the transmission rod, an external gear ring rotatably fitted on the upper side of the L-shaped sealing plate, a U-shaped frame fixedly connected to the lower side of the external gear ring, and a cleaning brush installed on the side of the U-shaped frame near the filter cartridge.

[0008] Furthermore, the driving sprocket and the driven sprocket are engaged by a chain, and the tension of the chain is adjustable. The gear engages with the external gear ring, and the cleaning brush contacts the outer side of the filter cartridge.

[0009] Furthermore, the snap-fit ​​mechanism includes a placement groove formed on the upper side of the filter shell, a telescopic rod is installed on one side of the inner wall of the placement groove, a spring is sleeved on the outer side of the telescopic rod, and a snap-fit ​​slider is fixedly connected to one end of the telescopic rod.

[0010] Furthermore, the two ends of the spring abut against one side of the locking slider and one side of the inner wall of the placement groove, respectively. The locking slider is slidably fitted on the inner wall of the placement groove, and one side of the locking slider is engaged with the groove on one side of the activated carbon filter plate.

[0011] Furthermore, a cleaning door is installed on one side of the filter housing.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model, by setting up an intake manifold, centrifugal fan blades, a rotating shaft, and a cleaning mechanism including sprockets, chains, gears, an external gear ring, a U-shaped frame, and cleaning brushes, allows the exhaust gas to be diverted to drive the centrifugal fan blades to rotate when the filter cartridge surface needs cleaning. This, in turn, drives the cleaning brushes to clean the filter cartridge through a series of transmission structures. This design eliminates the need for manual disassembly of the filter cartridge and does not require pausing the device during the cleaning process, effectively ensuring the continuous and stable operation of the device.

[0014] 2. This utility model, by setting a snap-fit ​​mechanism including a telescopic rod, a spring and a snap-fit ​​slider, allows the activated carbon filter plate to be installed or removed simply by pushing the snap-fit ​​slider when replacing the activated carbon filter plate. This eliminates the need to disassemble multiple parts, making the operation convenient and labor-saving, and improving maintenance efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a spraying exhaust gas filtration device according to the present invention;

[0016] Figure 2This is a schematic diagram of the cross-sectional structure of the filter shell of a spraying exhaust gas filtration device according to the present invention;

[0017] Figure 3 This is a schematic diagram of the cleaning mechanism of a spray exhaust gas filtration device according to the present invention;

[0018] Figure 4 This is a schematic diagram of the external gear ring connection structure of a spray exhaust gas filtration device according to the present invention;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the filter shell of a spraying exhaust gas filtration device according to the present invention.

[0020] In the diagram: 1. Filter housing; 2. Inlet pipe; 3. Solenoid valve; 4. Secondary inlet pipe; 5. Mounting shell; 6. Shaft; 7. Centrifugal fan blade; 8. Cleaning mechanism; 81. Transmission rod; 82. Drive sprocket; 83. Driven sprocket; 84. Chain; 85. Gear; 86. External gear ring; 87. U-shaped frame; 88. Cleaning brush; 89. Mounting slot; 9. L-shaped sealing plate; 10. Filter cartridge; 11. Exhaust pipe; 12. Activated carbon filter plate; 13. Snap-fit ​​mechanism; 131. Placement slot; 132. Telescopic rod; 133. Spring; 134. Snap-fit ​​slider; 14. Cleaning door. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please refer to Figures 1 to 5This utility model provides a technical solution: a spray exhaust gas filtration device, including a filter shell 1, an air inlet pipe 2 fixedly connected to one side of the filter shell 1, an electromagnetic valve 3 installed on the air inlet pipe 2, an air inlet secondary pipe 4 connected to the air inlet pipe 2 at the lower end of the electromagnetic valve 3, an mounting shell 5 fixedly connected to the air inlet secondary pipe 4, a rotating shaft 6 rotatably fitted to the inner wall of the mounting shell 5, a centrifugal fan blade 7 fixedly connected to the upper end of the rotating shaft 6 and cooperating with the mounting shell 5, a cleaning mechanism 8 provided on the lower side of the inner wall of the filter shell 1, an L-shaped sealing plate 9 fixedly connected to the inner wall of the filter shell 1, a filter cartridge 10 provided on the upper side of the L-shaped sealing plate 9, an exhaust pipe 11 fixedly connected to the other side of the filter shell 1, an activated carbon filter plate 12 inserted into the upper side of the filter shell 1, and a snap-fit ​​mechanism 13 provided on the upper side of the filter shell 1. The lower end of the filter cartridge 10 extends to the lower side of the L-shaped sealing plate 9, and the filter cartridge 10 is fixedly connected to the upper side of the inner wall of the filter shell 1. A cleaning door 14 is installed on one side of the filter housing 1. When the device is in use, the spraying exhaust gas enters through the air inlet pipe 2. The solenoid valve 3 controls the opening and closing of the air inlet pipe 2. When the cleaning mechanism 8 needs to be activated, the solenoid valve 3 closes the air inlet pipe 2, and the exhaust gas is diverted to enter through the secondary air inlet pipe 4. When it flows through the mounting shell 5, it drives the centrifugal fan blade 7 to rotate, which in turn drives the rotating shaft 6 to rotate. This structure uses the exhaust gas's own power to drive the subsequent cleaning action, without the need for an additional power source, thus saving energy.

[0023] In this embodiment, the cleaning mechanism 8 includes a mounting groove 89 formed on the lower side of the inner wall of the filter housing 1. A transmission rod 81 is rotatably fitted on the upper side of the L-shaped sealing plate 9. The lower end of the rotating shaft 6 extends into the mounting groove 89 and is fixedly connected to a drive sprocket 82. The lower end of the transmission rod 81 extends into the mounting groove 89 and is fixedly connected to a driven sprocket 83. A chain 84 is provided between the drive sprocket 82 and the driven sprocket 83. A gear 85 is fixedly connected to the upper end of the transmission rod 81. An external gear ring 86 is rotatably fitted on the upper side of the L-shaped sealing plate 9. A U-shaped frame 87 is fixedly connected to the lower side of the external gear ring 86. A cleaning brush 88 is installed on the side of the U-shaped frame 87 near the filter cartridge 10. The drive sprocket 82 and the driven sprocket 83 are meshed through the chain 84, and the tension of the chain 84 is adjustable. The gear 85 meshes with the external gear ring 86, and the cleaning brush 88 contacts the outer side of the filter cartridge 10. The rotation of the shaft 6 drives the drive sprocket 82 in the mounting groove 89 to rotate, which in turn drives the driven sprocket 83 to rotate via the chain 84, thereby driving the transmission rod 81 to rotate. The gear 85 at the upper end of the transmission rod 81 meshes with the external gear ring 86, driving the external gear ring 86 to rotate, causing the U-shaped frame 87 to rotate accordingly. The cleaning brush 88 on the U-shaped frame 87 cleans the outside of the filter cartridge 10. The tension of the chain 84 is adjustable to ensure stable transmission. The cleaning brush 88 contacts the filter cartridge 10 to ensure cleaning effect, effectively removing paint mist particles adhering to the surface of the filter cartridge 10, preventing clogging, eliminating the need for manual disassembly and cleaning, and ensuring uninterrupted operation of the device. When the exhaust gas passes through the filter cartridge 10, the filter cartridge 10 filters and intercepts paint mist particles and other particles in the exhaust gas. The L-shaped sealing plate 9 acts as a seal to prevent unfiltered exhaust gas from flowing directly around the filter cartridge 10, ensuring that all exhaust gas passes through the filter cartridge 10 and improving filtration efficiency.

[0024] In this embodiment, the snap-fit ​​mechanism 13 includes a placement groove 131 formed on the upper side of the filter housing 1. A telescopic rod 132 is installed on one side of the inner wall of the placement groove 131, and a spring 133 is sleeved on the outer side of the telescopic rod 132. One end of the telescopic rod 132 is fixedly connected to a snap-fit ​​slider 134. The two ends of the spring 133 abut against one side of the snap-fit ​​slider 134 and one side of the inner wall of the placement groove 131, respectively. The snap-fit ​​slider 134 slides against the inner wall of the placement groove 131, and one side of the snap-fit ​​slider 134 snaps into a groove on one side of the activated carbon filter plate 12. The waste gas filtered by the filter cartridge 10 flows to the activated carbon filter plate 12. The activated carbon filter plate 12 adsorbs and purifies the volatile organic compounds in the waste gas. When the activated carbon filter plate 12 needs to be replaced, push the locking slider 134, the telescopic rod 132 retracts, the spring 133 is compressed, the locking slider 134 disengages from the groove of the activated carbon filter plate 12, and the activated carbon filter plate 12 can be pulled out. During installation, insert the new activated carbon filter plate 12, the spring 133 returns to its original position and pushes the locking slider 134 into the groove to fix it. This structure makes it easy to replace the activated carbon filter plate 12 without disassembling multiple parts, saving time and effort, and ensuring the sealing after installation. The purified waste gas is discharged through the exhaust pipe 11. The cleaning door 14 on one side of the filter shell 1 can be opened to facilitate cleaning and maintenance of the inside of the filter shell 1.

[0025] When using the device, the spraying exhaust gas first enters the filter housing 1 through the inlet pipe 2. The solenoid valve 3 is initially open, and the exhaust gas flows directly to the filter cartridge 10. The filter cartridge 10 filters and intercepts the paint mist particles in the exhaust gas. The L-shaped sealing plate 9 ensures that all the exhaust gas passes through the filter cartridge 10. The filtered exhaust gas then flows to the activated carbon filter plate 12, where it adsorbs and removes harmful substances. The purified exhaust gas is discharged from the exhaust pipe 11. When it is necessary to clean the filter cartridge 10, the solenoid valve 3 closes the inlet pipe 2, and the exhaust gas is diverted to enter through the secondary inlet pipe 4, which drives the centrifugal fan blade 7 inside the circular housing 5 to rotate, thereby driving the rotating shaft 6. The rotation causes the drive sprocket 82 to rotate, which in turn drives the driven sprocket 83 and the transmission rod 81 to rotate via the chain 84. The gear 85 on the transmission rod 81 drives the outer gear ring 86 to rotate, causing the cleaning brush 88 on the U-shaped frame 87 to clean the outside of the filter cartridge 10. The cleaned impurities can be removed by opening the cleaning door 14. When the activated carbon filter plate 12 needs to be replaced, push the locking slider 134 to disengage it from the groove, pull out the old activated carbon filter plate 12, insert the new one, and the locking slider 134 will lock into the groove under the action of the spring 133 to complete the fixation. The whole process does not require frequent disassembly of parts, which can reduce the downtime of the device and improve the working efficiency.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A spray exhaust filtering device comprising a filtering casing (1), characterized in that: An air inlet pipe (2) is fixedly connected to one side of the filter shell (1). An electromagnetic valve (3) is installed on the air inlet pipe (2). An air inlet sub-pipe (4) connected to the air inlet pipe (2) is installed at the lower end of the electromagnetic valve (3). An installation round shell (5) is fixedly connected to the air inlet sub-pipe (4). A rotating shaft (6) is rotatably fitted on the inner wall of the installation round shell (5). A centrifugal fan blade (7) that cooperates with the installation round shell (5) is fixedly connected to the upper end of the rotating shaft (6). A cleaning mechanism (8) is provided on the lower side of the inner wall of the filter shell (1). An L-shaped sealing plate (9) is fixedly connected to the inner wall of the filter shell (1). A filter cylinder (10) is provided on the upper side of the L-shaped sealing plate (9). An exhaust pipe (11) is fixedly connected to the other side of the filter shell (1). An activated carbon filter plate (12) is inserted into the upper side of the filter shell (1). A snap-fit ​​mechanism (13) is provided on the upper side of the filter shell (1).

2. A spray exhaust filter apparatus according to claim 1, wherein: The lower end of the filter cartridge (10) extends to the lower side of the L-shaped sealing plate (9), and the filter cartridge (10) is fixedly connected to the upper side of the inner wall of the filter shell (1).

3. A spray exhaust filter apparatus according to claim 1, wherein: The cleaning mechanism (8) includes an installation groove (89) on the lower side of the inner wall of the filter housing (1), a transmission rod (81) is rotatably fitted on the upper side of the L-shaped sealing plate (9), a drive sprocket (82) is fixedly connected to the lower end of the rotating shaft (6) extending into the interior of the installation groove (89), a driven sprocket (83) is fixedly connected to the lower end of the transmission rod (81) extending into the interior of the installation groove (89), a chain (84) is provided between the drive sprocket (82) and the driven sprocket (83), a gear (85) is fixedly connected to the upper end of the transmission rod (81), an external gear ring (86) is rotatably fitted on the upper side of the L-shaped sealing plate (9), a U-shaped frame (87) is fixedly connected to the lower side of the external gear ring (86), and a cleaning brush (88) is installed on the side of the U-shaped frame (87) near the filter cartridge (10).

4. A spray exhaust filter apparatus according to claim 3, wherein: The driving sprocket (82) and the driven sprocket (83) are engaged by a chain (84), and the tension of the chain (84) is adjustable. The gear (85) is engaged with the external gear ring (86), and the cleaning brush (88) is in contact with the outer side of the filter cartridge (10).

5. A spray exhaust filter apparatus as defined in claim 1, wherein: The snap-fit ​​mechanism (13) includes a placement groove (131) opened on the upper side of the filter shell (1), a telescopic rod (132) is installed on one side of the inner wall of the placement groove (131), a spring (133) is sleeved on the outer side of the telescopic rod (132), and a snap-fit ​​slider (134) is fixedly connected to one end of the telescopic rod (132).

6. A spray exhaust filter apparatus according to claim 5, wherein: The two ends of the spring (133) abut against one side of the locking slider (134) and one side of the inner wall of the placement groove (131), respectively. The locking slider (134) slides on the inner wall of the placement groove (131), and one side of the locking slider (134) is locked against the groove on one side of the activated carbon filter plate (12).

7. A spray exhaust filter apparatus as defined in claim 1, wherein: A cleaning door (14) is installed on one side of the filter housing (1).

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