A purification device for a steel box girder spraying workshop

Abstract

This invention discloses a purification device for a steel box girder spraying workshop, relating to the field of waste gas purification devices. It includes a spray tower body, on which a waste gas inlet pipe, a circulating pump, and multiple observation windows are installed. An exhaust pipe for venting is installed on the top side of the spray tower body. It should be noted that, in this embodiment, the waste gas is buffered by an inlet hood, and the waste gas is discharged through multiple outlet pipes, allowing for thorough spraying and reaction with water. An outlet hood delivers the waste gas to a rotating filter cylinder, and a drive motor is activated to rotate the rotating filter cylinder. This rotation allows the filter cylinder to react with the waste gas, ensuring uniform contact and thorough reaction between the waste gas and the packing material, while also fully utilizing the packing material. Furthermore, a filter plate filters the extracted wastewater, and a cleaning brush cleans the filter plate to ensure its filtration effect, thereby ensuring the circulating pump can pump water smoothly.

Description

Technical Field

[0001] This invention relates to the field of waste gas purification equipment, and in particular to a purification equipment for a steel box girder spraying workshop. Background Technology

[0002] Steel box girders, also known as steel plate box girders, are a common structural form for long-span bridges, generally used in bridges with large spans. They are called steel box girders because their shape resembles a box. In long-span cable-stayed bridges, the main span of the steel box girder can reach hundreds or even thousands of meters. They are typically manufactured and installed in several segments, with a wide and flat cross-section and a height-to-width ratio of approximately 1:10. Steel box girders are generally constructed by welding together a top plate, bottom plate, web, transverse diaphragms, longitudinal diaphragms, and stiffeners. The top plate is an orthotropic bridge deck composed of a cover plate and longitudinal stiffeners.

[0003] During the production of steel box girders, due to the requirements of the operating environment, the steel box girders need to be coated with paint after processing to ensure rust prevention. During coating, the steel box girders are transported to the coating workshop and coated using a coating robot. During the coating process, the exhaust gas is recovered through a spray tower to prevent environmental pollution from the paint fumes. The spray tower recovers the exhaust gas by reacting particles with water and by reacting other chemical substances in the exhaust gas through multiple layers of packing material, thereby recovering harmful substances. However, during the use of the spray tower, the packing layer is fixed inside, and water is stored at the bottom of the tower. Water is pumped out and sprayed through nozzles to coat the exhaust gas. Because the exhaust gas has an impact force when entering the spray tower, it moves rapidly, often preventing the water from fully washing away the particles. It should be further explained that the exhaust gas rises unevenly, which means that when the packing layer reacts with the exhaust gas, the packing material cannot react evenly in different parts. At the same time, the reaction between the top and bottom of the packing layer and the exhaust gas is also uneven. This means that the packing layer cannot be fully utilized, and the exhaust gas is not adequately treated. As a result, the exhaust gas still contains a large amount of harmful substances after it is discharged, which will cause environmental pollution over a long period of time. Summary of the Invention

[0004] The purpose of this invention is to provide a purification device for a steel box girder spraying workshop to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A purification device for a steel box girder spraying workshop includes a spray tower body, on which an exhaust gas input pipe, a circulation pump and multiple observation windows are installed. An exhaust pipe for exhausting gas is installed on the top side of the spray tower body. Multiple water pipes are connected to the circulation pump, and multiple spray heads are installed on each water pipe. It also includes multiple rolling filter devices, all of which are installed inside the spray tower body. The rolling filter devices rotate to react and filter the exhaust gas. Each rolling filter device includes a rolling filter cylinder, which is hollow and filled with packing material. A drive shaft is installed inside the rolling filter cylinder, and a drive motor is installed at the end of the drive shaft. The drive motor is installed on one side of the spray tower body. Sealing seats are installed on both sides of the rolling filter cylinder to seal the rolling filter cylinder. It also includes an airflow dispersion device, which is drivenly connected to the rolling filter device. The exhaust gas input pipe is connected to the airflow dispersion device, and the airflow dispersion device is used to disperse the exhaust gas input through the exhaust gas input pipe. The airflow dispersion device includes a mounting plate, which is installed inside the spray tower body. A rotating plate is rotatably installed inside the mounting plate. Multiple air outlet cylinders are installed equidistantly in a ring on the rotating plate. Multiple spray heads are located in the multiple air outlet cylinders. An air inlet hood is installed at the end of the exhaust gas input pipe. An installation base is installed on the bottom side of the air inlet hood. A rotating shaft is rotatably installed on the installation base. Multiple impact blades are installed equidistantly in a ring on the rotating shaft. The rotating shaft is installed on the rotating plate. It also includes an active cleaning device, which is connected to the airflow dispersion device and is used to unclog the circulating pump. The active cleaning device includes a filter box, which is installed on one side of the spray tower and connected to the circulating pump. A filter plate is installed inside the filter box, and a cleaning brush is slidably installed on one side of the filter box. The cleaning brush moves up and down to clean the filter plate.

[0006] Furthermore, in a preferred embodiment of the present invention, the rolling filter device further includes an air supply hood, which is movably installed between the two sealing seats. Below the air supply hood is an air collection hood installed inside the spray tower body, and a transfer air pipe connects the air supply hood and the air collection hood. Each of the two sealing seats has a sliding groove on one side that is close to each other, and a sliding block is installed on both sides of the air supply hood. The two sliding blocks are slidably installed in the two sliding grooves respectively.

[0007] Furthermore, in a preferred embodiment of the present invention, a rotating hole is provided on the air supply hood, and a drive column is rotatably installed in the rotating hole, and the drive column is rotatably installed on the spray tower body; Both the drive column and the drive shaft are fitted with pulleys, and belts are fitted onto the two pulleys.

[0008] Furthermore, in a preferred embodiment of the present invention, a driving extrusion groove is provided annularly inclined on the outer surface of the driving column, and an arc-shaped extrusion block is installed on the inner wall of the rotating hole. The arc-shaped extrusion block extends into the driving extrusion groove, and the driving column rotates to extrude the arc-shaped extrusion block through the driving extrusion groove, thereby causing the air supply hood to move laterally.

[0009] Furthermore, in a preferred embodiment of the present invention, the airflow dispersion device further includes a central rotating ring, which is connected to the water pipe, and the plurality of spray heads are all mounted on the central rotating ring; The water pipe delivers spray water to multiple spray heads via the central rotating ring.

[0010] Furthermore, in a preferred embodiment of the present invention, the bottom side of the rotating ring is open, and a mounting ring is rotatably mounted on the bottom side of the rotating ring, and a plurality of spray heads are mounted on the mounting ring; The inner walls on both sides of the rotating ring are provided with annular grooves, and the mounting ring is rotatably installed in the two annular grooves.

[0011] Furthermore, in a preferred embodiment of the present invention, a drive frame is installed on a plurality of the spray heads, and the drive frame is mounted on the rotating plate; A rotating groove is provided on the inner wall of the mounting plate, and a rotating ring is installed on the outer side of the rotating plate. The rotating ring is rotatably installed in the rotating groove.

[0012] Furthermore, in a preferred embodiment of the present invention, the active cleaning device further includes a support frame, which is rotatably mounted on the filter box; A support shaft is rotatably mounted on the support frame, and a smooth groove is provided on the cleaning brush. One end of the support shaft extends into the smooth groove.

[0013] Furthermore, in a preferred embodiment of the present invention, a support shaft is installed on the support frame, and an installation groove is provided on the filter box, wherein the support shaft is rotatably installed in the installation groove; A torsion spring is sleeved on the support shaft. One end of the torsion spring is installed on the inner wall of the mounting groove, and the other end of the torsion spring is installed on the support shaft.

[0014] Furthermore, in a preferred embodiment of the present invention, two limiting grooves are provided on one side of the filter box, and the two limiting grooves are respectively located on both sides of the filter plate; Two limiting sliders are installed on one side of the cleaning brush, and the two limiting sliders are slidably installed in the two limiting grooves respectively.

[0015] The beneficial effects of the purification device for a steel box girder spraying workshop proposed in this invention are: In this invention, by setting up a rolling filter device, the packing material is evenly filled into the rolling filter cylinder. At the same time, the drive motor is started, which drives the drive shaft to rotate, thereby driving the rolling filter cylinder to rotate. The rolling filter cylinder reacts with the exhaust gas through rotation, which can make the exhaust gas and the packing material come into uniform contact and react fully. At the same time, the packing material on the rolling filter cylinder can be fully utilized.

[0016] Furthermore, in this invention, by setting up an airflow dispersion device, when the exhaust gas is transported to the intake hood through the exhaust gas inlet pipe, the intake hood can effectively reduce the impact force of the exhaust gas. The exhaust gas impacts multiple impact blades, driving the rotating shaft to rotate. The rotating shaft rotates the rotating plate, which in turn drives multiple exhaust cylinders to rotate. This allows the exhaust gas to drift evenly towards the packing layer. At the same time, multiple spray heads rotate synchronously and spray the exhaust gas in the multiple exhaust cylinders, allowing the exhaust gas to be fully washed and reacted by water. This ensures that the exhaust gas is thoroughly washed by water, while avoiding the problem that the packing cannot fully react with the exhaust gas due to excessive impact force.

[0017] Furthermore, in this invention, by setting up an active cleaning device, the extracted wastewater is filtered using the filter plate inside the filter box, and the filter plate is cleaned by a cleaning brush to ensure the filtration effect of the filter plate. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a purification device for a steel box girder spraying workshop provided in an embodiment of the present invention; Figure 2 This is a side view of a purification device for a steel box girder spraying workshop, provided in an embodiment of the present invention. Figure 3 This is a partial cross-sectional structural schematic diagram of a purification device for a steel box girder spraying workshop provided in an embodiment of the present invention; Figure 4 A schematic diagram of the connection between the rolling filter cylinder and the gas collection hood in a purification device for a steel box girder spraying workshop, provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the connection between the air supply hood and drive column of a purification device for a steel box girder spraying workshop, as provided in an embodiment of the present invention. Figure 6 This is a partial cross-sectional structural diagram showing the connection between the air supply hood and drive column of a purification device for a steel box girder spraying workshop, as provided in an embodiment of the present invention. Figure 7 This is a schematic diagram illustrating the connection between the spray tower and the rolling filter cylinder, etc., of a purification device for a steel box girder painting workshop, as provided in an embodiment of the present invention. Figure 8 This is a schematic diagram of the connection between the water pipe and the intermediate rotating ring of a purification device in a steel box girder spraying workshop, as provided in an embodiment of the present invention. Figure 9 This is a schematic diagram illustrating the connection between the mounting plate and the air intake hood of a purification device for a steel box girder spraying workshop, as provided in an embodiment of the present invention. Figure 10 This is a partial structural diagram illustrating the connection between the exhaust gas inlet pipe and the air inlet hood of a purification device for a steel box girder spraying workshop, as provided in an embodiment of the present invention. Figure 11 This is a cross-sectional structural diagram illustrating the connection between the mounting plate and the rotating plate of a purification device for a steel box girder spraying workshop, as provided in an embodiment of the present invention. Figure 12 A purification device for a steel box girder spraying workshop is provided as an embodiment of the present invention. Figure 11 A schematic diagram of the structure of part A; Figure 13 This is a schematic diagram illustrating the connection between the filter box and the support frame, etc., of a purification device for a steel box girder spraying workshop, as provided in an embodiment of the present invention. Figure 14 This is a partial cross-sectional view of the connection between the filter box and the support frame of a purification device for a steel box girder spraying workshop, as provided in an embodiment of the present invention.

[0019] In the diagram: 1-Spray tower body; 2-Exhaust gas inlet pipe; 3-Circulating pump; 4-Water pipe; 5-Spray head; 6-Rolling filter device; 601-Rolling filter cylinder; 602-Sealing seat; 603-Drive motor; 604-Drive shaft; 605-Air supply hood; 606-Air collection hood; 607-Transfer air pipe; 608-Rotating hole; 609-Drive column; 610-Pulley; 611-Belt; 612-Sliding groove; 613-Sliding block; 614-Drive extrusion groove; 615-Arc-shaped extrusion block; 7-Airflow dispersion device; 701-Mounting plate; 702-Rotating plate; 703-Air outlet 704-Rotating groove; 705-Rotating ring; 706-Air inlet hood; 707-Mounting base; 708-Rotating shaft; 709-Impact blade; 710-Intermediate rotating ring; 711-Drive frame; 712-Annular groove; 713-Mounting ring; 8-Active cleaning device; 801-Filter box; 802-Filter plate; 803-Cleaning brush; 804-Restricting slide groove; 805-Restricting slider; 806-Spreading frame; 807-Spreading shaft; 808-Smoothing groove; 809-Supporting shaft; 810-Mounting groove; 811-Torsion spring; 812-Push frame; 9-Air outlet pipe; 10-Observation window. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] Furthermore, in the description of this invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "perpendicular" do not imply that components must be absolutely vertical, but rather that they can be slightly tilted. For example, "vertical" simply means that its direction is more vertical relative to "horizontal," not that the structure must be completely vertical, but can be slightly tilted.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Please refer to the attached instruction manual. Figure 1-14 The present invention provides a purification device for a steel box girder spraying workshop, which includes a spray tower body 1, an exhaust gas input pipe 2, a circulation pump 3 and multiple observation windows 10 installed on the spray tower body 1, an exhaust pipe 9 for exhausting air installed on the top side of the spray tower body 1, and multiple water pipes 4 connected to the circulation pump 3, with multiple spray heads 5 installed on each water pipe 4. It also includes multiple rolling filter devices 6, all of which are installed inside the spray tower body 1. The rolling filter devices 6 rotate to react and filter the exhaust gas. The rolling filter device 6 includes a rolling filter cylinder 601, which is hollow and filled with packing material. A drive shaft 604 is installed inside the rolling filter cylinder 601, and a drive motor 603 is installed at the end of the drive shaft 604. The drive motor 603 is installed on one side of the spray tower body 1. Sealing seats 602 are installed on both sides of the rolling filter cylinder 601 to seal the rolling filter cylinder 601. It should be noted that, in this embodiment of the invention, by setting the rolling filter device 6, the packing material is evenly filled into the rolling filter cylinder 601. At the same time, the drive motor 603 is started, so that the drive motor 603 drives the drive shaft 604 to rotate, which in turn drives the rolling filter cylinder 601 to rotate. This allows the rolling filter cylinder 601 to react with the exhaust gas through rotation, which can make the exhaust gas come into uniform contact with the packing material and react fully. At the same time, it can make full use of the packing material on the rolling filter cylinder 601.

[0027] Furthermore, the purification device for a steel box girder spraying workshop provided in this embodiment of the invention also includes an airflow dispersion device 7, which is connected to a rolling filter device 6. The exhaust gas input pipe 2 is connected to the airflow dispersion device 7, and the airflow dispersion device 7 is used to disperse the exhaust gas input into the exhaust gas input pipe 2. Specifically, the airflow dispersion device 7 includes a mounting plate 701, which is installed inside the spray tower body 1. A rotating plate 702 is rotatably installed inside the mounting plate 701. Multiple air outlets 703 are equidistantly installed on the rotating plate 702. Multiple spray heads 5 are located in the multiple air outlets 703 respectively. An air inlet hood 706 is installed at the end of the exhaust gas input pipe 2. An installation base 707 is installed on the bottom side of the air inlet hood 706. A rotating shaft 708 is rotatably installed on the installation base 707. Multiple impact blades 709 are equidistantly installed on the rotating shaft 708. The rotating shaft 708 is installed on the rotating plate 702. Furthermore, in this embodiment of the invention, an active cleaning device 8 is also included. The active cleaning device 8 is connected to the airflow dispersion device 7 and is used to unclog the circulating pump 3. Specifically, the active cleaning device 8 includes a filter box 801, which is installed on one side of the spray tower body 1 and connected to the circulating pump 3. A filter plate 802 is installed inside the filter box 801, and a cleaning brush 803 is slidably installed on one side of the filter box 801. The cleaning brush 803 moves up and down to clean the filter plate 802. It should be noted that, through the setting of the airflow dispersion device 7, when the exhaust gas is transported to the intake hood 706 through the exhaust gas inlet pipe 2, the intake hood 706 can effectively reduce the impact force of the exhaust gas. The exhaust gas impacts multiple impact blades 709, driving the rotating shaft 708 to rotate. The rotation of the rotating shaft 708 drives the rotating plate 702 to rotate, causing the rotating plate 702 to drive multiple exhaust cylinders 703 to rotate. This allows the exhaust gas to drift evenly to the packing layer. At the same time, multiple spray heads 5 rotate synchronously and spray the exhaust gas in the multiple exhaust cylinders 703, allowing the exhaust gas to be fully washed and reacted by the water. This ensures that the exhaust gas is fully washed by the water, while avoiding the problem that the packing cannot fully react with the exhaust gas due to excessive impact force. In addition, through the setting of the active cleaning device 8, the filter plate 802 in the filter box 801 is used to filter the extracted wastewater. At the same time, the cleaning brush 803 cleans the filter plate 802, ensuring the filtration effect of the filter plate 802.

[0028] Please refer to the instruction manual attached. Figure 3-7 Furthermore, the purification device for a steel box girder spraying workshop provided in this embodiment of the invention includes a rolling filter device 6 that further comprises an air supply hood 605. The air supply hood 605 is movably installed between two sealing seats 602. Below the air supply hood 605 is a gas collecting hood 606 installed inside the spray tower body 1. A transfer air pipe 607 connects the air supply hood 605 and the gas collecting hood 606. Each of the two sealing seats 602 has a sliding groove 612 on one side close to each other. Sliding blocks 613 are installed on both sides of the air supply hood 605, and the two sliding blocks 613 are slidably installed in the two sliding grooves 612 respectively. It should be noted that in this embodiment of the invention, when the air supply hood 605 moves, it slides horizontally in the two sliding grooves 612 via the two sliding blocks 613, thereby realizing the horizontal movement of the air supply hood 605. At the same time, the gas collecting hood 606 collects the gas sprayed from multiple air outlets 703 and transports it to the air supply hood 605 through the transfer air pipe 607.

[0029] More specifically, in this embodiment of the invention, the air supply hood 605 has a rotating hole 608, and a drive column 609 is rotatably installed in the rotating hole 608. The drive column 609 is rotatably installed on the spray tower body 1. In addition, pulleys 610 are sleeved on both the drive column 609 and the drive shaft 604, and belts 611 are sleeved on the two pulleys 610. It should be noted that, in this embodiment of the invention, when the drive motor 603 drives the drive shaft 604 to rotate, the drive shaft 604 drives the belt 611 to rotate through one pulley 610, and the belt 611 drives the drive column 609 to rotate through the other pulley 610, thereby causing the drive column 609 to rotate in the rotating hole 608, so that the drive column 609 drives the air supply hood 605 to move.

[0030] Please continue to refer to the instruction manual appendix. Figure 3-7 More specifically, in this embodiment of the invention, a driving extrusion groove 614 is annularly inclinedly formed on the outer surface of the driving column 609, and an arc-shaped extrusion block 615 is installed on the inner wall of the rotating hole 608. The arc-shaped extrusion block 615 extends into the driving extrusion groove 614. The driving column 609 rotates and extrudes the arc-shaped extrusion block 615 through the driving extrusion groove 614, causing the air delivery hood 605 to move laterally. It should be noted that in this embodiment of the invention, when the driving column 609 rotates, it extrudes the arc-shaped extrusion block 615 through the driving extrusion groove 614. The movement of the arc-shaped extrusion block 615 drives the air delivery hood 605. Since the driving extrusion groove 614 is annularly inclinedly formed on the outer surface of the driving column 609, the air delivery hood 605 reciprocates once when the driving column 609 rotates one revolution, thereby uniformly delivering the exhaust gas to the surface of the rolling filter cylinder 601, so that the exhaust gas can fully react with the packing material in the rolling filter cylinder 601.

[0031] Further, please refer to the appendix to the instruction manual. Figure 8-12 This invention provides a purification device for a steel box girder spraying workshop. The airflow dispersion device 7 further includes a central rotating ring 710, which is connected to a water pipe 4. Multiple spray heads 5 are installed on the central rotating ring 710. The water pipe 4 delivers spray water to the multiple spray heads 5 through the central rotating ring 710. It should be noted that, in this embodiment of the invention, the water pumped by the circulating pump 3 enters the central rotating ring 710 through the water pipe 4, and then enters the multiple spray heads 5 through the central rotating ring 710, achieving the purpose of uniform spraying from the multiple spray heads 5.

[0032] More specifically, in this embodiment of the invention, the bottom side of the rotating ring 710 is open, and a mounting ring 713 is rotatably mounted on the bottom side of the rotating ring 710, with multiple spray heads 5 mounted on the mounting ring 713. Additionally, annular grooves 712 are formed on the inner walls of both sides of the rotating ring 710, and the mounting ring 713 is rotatably mounted within the two annular grooves 712. It should be noted that in this embodiment of the invention, when the multiple spray heads 5 rotate, the synchronous rotation of the spray heads 5 is achieved by the mounting ring 713 rotating within the two annular grooves 712.

[0033] Please continue to refer to the instruction manual appendix. Figure 8-12 More specifically, in this embodiment of the invention, a drive frame 711 is mounted on multiple spray heads 5, and the drive frame 711 is mounted on a rotating plate 702; a rotating groove 704 is formed on the inner wall of the mounting plate 701, and a rotating ring 705 is mounted on the outer side of the rotating plate 702, and the rotating ring 705 is rotatably mounted in the rotating groove 704. It should be noted that, in this embodiment of the invention, the rotating plate 702 rotates in the rotating groove 704 via the rotating ring 705, and at the same time, when the rotating plate 702 rotates, it drives the multiple spray heads 5 to rotate via the drive frame 711.

[0034] Further, please refer to the appendix to the instruction manual. Figure 3 , Figure 9 and Figure 13-14 This invention provides a purification device for a steel box girder spraying workshop. The active cleaning device 8 further includes a support frame 806, which is rotatably mounted on a filter box 801. A support shaft 807 is rotatably mounted on the support frame 806. A smooth groove 808 is formed on the cleaning brush 803, and one end of the support shaft 807 extends into the smooth groove 808. It should be noted that, in this embodiment of the invention, when the push frame 812 pushes the support frame 806 to rotate, the support frame 806 drives the cleaning brush 803 to move upward via the support shaft 807. Simultaneously, the support shaft 807 slides within the smooth groove 808, and the cleaning brush 803 moves to clean the filter plate 802, ensuring the filter plate 802 remains unobstructed.

[0035] More specifically, in this embodiment of the invention, a support shaft 809 is mounted on the support frame 806, and an installation groove 810 is provided on the filter box 801. The support shaft 809 is rotatably mounted in the installation groove 810. A torsion spring 811 is sleeved on the support shaft 809. One end of the torsion spring 811 is mounted on the inner wall of the installation groove 810, and the other end of the torsion spring 811 is mounted on the support shaft 809. It should be noted that in this embodiment of the invention, when the push frame 812 pushes the support frame 806 to rotate, the support frame 806 rotates through the support shaft 809. The support shaft 809 rotates within the installation groove 810, causing the torsion spring 811 to be subjected to force. When the push frame 812 disengages from the support frame 806, the rebound force of the torsion spring 811 causes the support shaft 809 to reset, thereby causing the support shaft 809 to drive the support frame 806 to reset. This allows the support frame 806 to drive the cleaning brush 803 to move up and down through the support shaft 807.

[0036] Please continue to refer to the instruction manual appendix. Figure 3 , Figure 9 and Figure 13-14 More specifically, in this embodiment of the invention, two limiting grooves 804 are provided on one side of the filter box 801, and the two limiting grooves 804 are respectively located on both sides of the filter plate 802. In addition, two limiting sliders 805 are installed on one side of the cleaning brush 803, and the two limiting sliders 805 are slidably installed in the two limiting grooves 804 respectively. It should be noted that, in this embodiment of the invention, when the cleaning brush 803 moves, it slides vertically within the two limiting grooves 804 by the sliding of the two limiting sliders 805.

[0037] In summary, the working principle of the purification device for a steel box girder spraying workshop provided in this embodiment of the invention is as follows: When the exhaust gas is transported from the exhaust gas inlet pipe 2 to the intake hood 706, the intake hood 706 can effectively reduce the impact force of the exhaust gas. At the same time, the exhaust gas impacts multiple impact blades 709, driving the rotating shaft 708 to rotate. The rotation of the rotating shaft 708 drives the rotating plate 702 to rotate, which in turn drives multiple exhaust cylinders 703 to rotate. This allows the exhaust gas to drift evenly to the packing layer. Meanwhile, when the rotating plate 702 rotates, it drives multiple spray heads 5 to rotate through the drive frame 711, spraying the exhaust gas in the multiple exhaust cylinders 703. This allows the exhaust gas to be fully washed and reacted by the water, thus ensuring that the exhaust gas is fully washed by the water. This also avoids the problem that the packing cannot fully react with the exhaust gas due to excessive impact force. Furthermore, the drive motor 603 is activated, causing the drive shaft 604 to rotate, which in turn drives the rolling filter cylinder 601 to rotate. This rotation allows the rolling filter cylinder 601 to react with the exhaust gas, ensuring uniform contact and thorough reaction between the exhaust gas and the packing material, while also maximizing the utilization of the packing material. Additionally, as the drive motor 603 drives the drive shaft 604, the drive shaft 604 drives a belt 611 via a pulley 610. The belt 611, in turn, drives a drive column 609 via another pulley 610, causing the drive column 609 to rotate within the rotating hole 608. During rotation, the drive column 609 drives the extrusion groove 6... 14. The arc-shaped extrusion block 615 moves, and the movement of the arc-shaped extrusion block 615 drives the air supply hood 605. Since the driving extrusion groove 614 is opened in annular inclination on the outer surface of the driving column 609, the air supply hood 605 moves back and forth once when the driving column 609 rotates one revolution. Therefore, when the air supply hood 605 moves, it slides horizontally in the two sliding grooves 612 through two sliding blocks 613, realizing the horizontal movement of the air supply hood 605. At the same time, the gas collection hood 606 collects the gas sprayed from multiple gas outlets 703 and transports it to the air supply hood 605 through the transfer gas pipe 607, thereby evenly transporting the exhaust gas to the surface of the rolling filter cylinder 601, so that the exhaust gas can fully react with the packing material in the rolling filter cylinder 601. Furthermore, when the pusher 812 pushes the expansion frame 806 to rotate, the expansion frame 806 drives the cleaning brush 803 to move upward through the expansion shaft 807. At the same time, the expansion shaft 807 slides in the smooth groove 808, and the cleaning brush 803 moves to clean the filter plate 802. The expansion frame 806 rotates through the support shaft 809, which rotates in the mounting groove 810 and drives the torsion spring 811 to be stressed. Therefore, when the pusher 812 disengages from the expansion frame 806, the rebound force of the torsion spring 811 drives the support shaft 809 to reset, thereby causing the support shaft 809 to drive the expansion frame 806 to reset. This allows the expansion frame 806 to drive the cleaning brush 803 to move up and down through the expansion shaft 807, ensuring the smooth flow of the filter plate 802.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A purification device for a steel box girder spraying workshop, characterized in that, It includes a spray tower body, on which an exhaust gas inlet pipe, a circulation pump and multiple observation windows are installed. An exhaust pipe for exhausting gas is installed on the top side of the spray tower body. Multiple water pipes are connected to the circulation pump, and multiple spray heads are installed on each water pipe. The system also includes multiple rolling filter devices, all installed inside the spray tower. These rolling filter devices rotate to react and filter the exhaust gas. Each rolling filter device includes a hollow rolling filter cylinder filled with packing material. A drive shaft is installed inside the rolling filter cylinder, and a drive motor is installed at the end of the drive shaft. The drive motor is mounted on one side of the spray tower. Sealing seats are installed on both sides of the rolling filter cylinder to seal it. The rolling filter also includes an air supply hood, movably installed between two of the sealing seats. Below the air supply hood is a gas collection hood installed inside the spray tower. A transfer air pipe connects the air supply hood and the gas collection hood. The gas collection hood collects the gas ejected from the multiple outlet cylinders and transports it to the air supply hood through the transfer air pipe. The system also includes an airflow dispersion device, to which the exhaust gas inlet pipe is connected. The airflow dispersion device disperses the exhaust gas input through the exhaust gas inlet pipe. The airflow dispersion device includes a mounting plate installed inside the spray tower. A rotating plate is rotatably mounted inside the mounting plate. Multiple air outlet cylinders are equidistantly mounted on the rotating plate in a ring. Multiple spray heads are located within the multiple air outlet cylinders. An air inlet hood is installed at the end of the exhaust gas inlet pipe. A mounting base is installed on the bottom side of the air inlet hood. A rotating shaft is rotatably mounted on the mounting base. Multiple impact blades are equidistantly mounted on the rotating shaft in a ring. The rotating shaft is mounted on the rotating plate. The airflow dispersion device also includes a central rotating ring connected to the water pipe. Multiple spray heads are mounted on the central rotating ring. The water pipe delivers spray water to the multiple spray heads through the central rotating ring. It also includes an active cleaning device for unblocking the circulating pump; the active cleaning device includes a filter box, which is installed on one side of the spray tower and connected to the circulating pump. A filter plate is installed inside the filter box, and a cleaning brush is slidably installed on one side of the filter box. The cleaning brush moves up and down to clean the filter plate.

2. The purification device for a steel box girder spraying workshop according to claim 1, characterized in that, Each of the two sealing seats has a sliding groove on one side that is close to each other, and a sliding block is installed on both sides of the air supply hood. The two sliding blocks are slidably installed in the two sliding grooves respectively.

3. The purification device for a steel box girder spraying workshop according to claim 2, characterized in that, The air supply hood has a rotating hole, and a drive column is rotatably installed in the rotating hole. The drive column is rotatably installed on the spray tower body. Both the drive column and the drive shaft are fitted with pulleys, and belts are fitted onto the two pulleys.

4. The purification device for a steel box girder spraying workshop according to claim 3, characterized in that, The outer surface of the drive column is provided with a drive extrusion groove on an annular angle. An arc-shaped extrusion block is installed on the inner wall of the rotating hole. The arc-shaped extrusion block extends into the drive extrusion groove. The drive column rotates and extrudes the arc-shaped extrusion block through the drive extrusion groove, causing the air supply hood to move laterally.

5. A purification device for a steel box girder spraying workshop according to claim 1, characterized in that, The bottom side of the rotating ring is open, and a mounting ring is rotatably mounted on the bottom side of the rotating ring. Multiple spray heads are mounted on the mounting ring. The inner walls on both sides of the rotating ring are provided with annular grooves, and the mounting ring is rotatably installed in the two annular grooves.

6. A purification device for a steel box girder spraying workshop according to claim 5, characterized in that, A drive frame is mounted on each of the spray heads, and the drive frame is mounted on the rotating plate; A rotating groove is provided on the inner wall of the mounting plate, and a rotating ring is installed on the outer side of the rotating plate. The rotating ring is rotatably installed in the rotating groove.

7. A purification device for a steel box girder spraying workshop according to claim 1, characterized in that, The active cleaning device also includes a support frame, which is rotatably mounted on the filter box; A support shaft is rotatably mounted on the support frame, and a smooth groove is provided on the cleaning brush. One end of the support shaft extends into the smooth groove.

8. A purification device for a steel box girder spraying workshop according to claim 7, characterized in that, A support shaft is installed on the support frame, and an installation groove is provided on the filter box, in which the support shaft is rotatably installed. A torsion spring is sleeved on the support shaft. One end of the torsion spring is installed on the inner wall of the mounting groove, and the other end of the torsion spring is installed on the support shaft.

9. A purification device for a steel box girder spraying workshop according to claim 8, characterized in that, Two limiting grooves are provided on one side of the filter box, and the two limiting grooves are respectively located on both sides of the filter plate; Two limiting sliders are installed on one side of the cleaning brush, and the two limiting sliders are slidably installed in the two limiting grooves respectively.

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