A filtration device for curing oven exhaust treatment and methods of use thereof

Abstract

The application discloses a kind of filtering devices for curing furnace exhaust treatment and its use method, belong to rock wool production manufacturing technical field, including device shell, shell one end is equipped with air inlet, the other end is equipped with gas outlet, two filter channels are equipped in the shell between air inlet and gas outlet, the one end of two filter channels is equipped with first road plate, first road plate is connected with first rotary drive mechanism and rotates under its driving, for switching the opening and closing state of two filter channel entrances;The one end of two filter channels is equipped with second road plate near gas outlet, second road plate is connected with second rotary drive mechanism and rotates under its driving, for switching the opening and closing state of two filter channel outlets.Filter channel is equipped with filter support inside, and a plurality of filter core structures can be detachably installed on filter support.The application can avoid fiber adhesion to block equipment, ensure that waste gas can be separated while being repaired and cleaned, and meet the continuous and stable operation of rock wool production line.

Description

Technical Field

[0001] This invention relates to the field of rock wool production and manufacturing technology, specifically to a filtration device for treating exhaust gas from a curing furnace and its usage method. Background Technology

[0002] During rock wool production, the exhaust gas emitted from the curing furnace contains a large amount of volatile organic compounds, such as formaldehyde, phenol, and other aldehydes, as well as a certain amount of rock wool fibers. To meet environmental emission requirements, it must be incinerated at high temperatures before being released. To improve thermal efficiency, the exhaust gas is typically preheated by a heat exchanger before entering the incinerator. However, the rock wool fibers in the exhaust gas tend to deposit as they flow through the heat exchanger pipes and inside the incinerator. Over long-term operation, this significantly reduces the heat transfer efficiency of the heat exchanger and affects the uniform distribution of airflow and combustion within the incinerator, even causing localized blockages. Furthermore, the high-speed flow of rock wool fibers can cause erosion and wear on the inner walls of pipes and equipment, shortening their lifespan. Therefore, effective separation of the rock wool fibers before the exhaust gas enters the heat exchanger and incinerator is crucial.

[0003] Existing separation equipment mainly includes cyclone separators and bag filters. Neither is suitable for treating the exhaust gas from curing furnaces containing rock wool fibers. Cyclone separators rely on centrifugal force to separate particulate matter, but they have low efficiency in capturing fine rock wool fibers (e.g., <5μm). Furthermore, the presence of uncured resin and high humidity in the exhaust gas can easily lead to fiber adhesion and equipment blockage, requiring frequent cleaning and affecting continuous operation. Although bag filters have high filtration efficiency, their filter bags are also prone to blockage and are difficult to clean under high temperature (150–250℃) and conditions containing adhesive components, shortening their service life and requiring periodic shutdowns for replacement. This cannot meet the requirements for continuous and stable operation of rock wool production lines. In addition, the high-temperature resistant filter bags for bag filters have high procurement and maintenance costs, further increasing the operating costs. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a filtration device and its usage method for treating curing oven exhaust gas. It effectively separates curing oven exhaust gas containing rock wool fibers, preventing fiber adhesion and clogging of the equipment. It ensures that exhaust gas separation can be performed while maintenance and cleaning are carried out, thus meeting the requirements for continuous and stable operation of the rock wool production line.

[0005] The technical solution of the present invention is as follows: In a first aspect of the invention, a filtration device for treating exhaust gas from a curing oven is provided, comprising a housing, an air inlet at one end of the housing, an air outlet at the other end of the housing, two filtration channels within the housing between the air inlet and the air outlet, a first switching plate at the end of each filtration channel near the air inlet, the first switching plate being connected to a first rotary drive mechanism, the first switching plate rotating under the drive of the first rotary drive mechanism to switch the open / closed state of the inlet of the two filtration channels; a second switching plate at the end of each filtration channel near the air outlet, the second switching plate being connected to a second rotary drive mechanism, the second switching plate rotating under the drive of the second rotary drive mechanism to switch the open / closed state of the outlet of the two filtration channels; and a filter support is provided inside each filtration channel, on which a plurality of filter element structures are detachably mounted. In some embodiments of the present invention, the device housing is configured as a rectangular structure, the air inlet is located at one side ridge of the device housing, the air outlet is symmetrically located at the other side ridge of the device housing opposite to the air inlet, the axes of the air inlet and the air outlet coincide, and the filter channels are symmetrically located at the other two side ridges of the device housing with the axes of the air inlet and the air outlet as the center line of symmetry. In some embodiments of the present invention, the inlet ends of the two filter channels are arranged at a 90-degree angle, the angle facing the air inlet, and a first rotary drive mechanism is provided at the angle; the outlet ends of the two filter channels are arranged at a 90-degree angle, the angle facing the air outlet, and a second rotary drive mechanism is provided at the angle. In some embodiments of the present invention, an air inlet pressure gauge is provided at the air inlet, and an air outlet pressure gauge is provided at the air outlet. In some embodiments of the present invention, the filter bracket has a plurality of cavity structures inside, and a support slide is provided in the plurality of cavity structures. A filter element structure is slidably arranged on the support slide. The filter element structure includes a filter element frame. The filter element frame is configured as a triangular prism structure. The triangular prism structure is vertically arranged on the side facing the air inlet. Filter screens are provided on the two sides of the triangular prism structure near the air outlet. In some embodiments of the present invention, the top of the device housing is provided with a hoisting structure, the filter element frame is provided with a lifting ring structure, and the filter element frame is provided with a push-pull plate at one end outside the device housing, the push-pull plate having the same cross-sectional area as the cavity structure. In some embodiments of the present invention, a filter chamber door is provided on the side of the device housing corresponding to the filter bracket, and a connecting bracket is provided between the outside of the filter chamber door and the device housing. One end of the connecting bracket is hinged to the device housing, and the other end of the connecting bracket is hinged to the filter chamber door. In some embodiments of the present invention, a control system is also included, which is used to control the simultaneous operation and stopping of the first rotary drive mechanism and the second rotary drive mechanism. In some embodiments of the present invention, both the first rotary drive mechanism and the second rotary drive mechanism are configured as pneumatic rotary mechanisms, and the control system is configured as an air circuit control system. Both the first rotary drive mechanism and the second rotary drive mechanism are connected to the air circuit control system, and the air circuit control system is used to control the first rotary drive mechanism and the second rotary drive mechanism to run and stop simultaneously. In a second aspect of the invention, a method of using a filtration device for treating exhaust gas from a curing oven is provided, comprising: Open the filter chamber door, and use the hoisting structure on the outside of the device housing to cooperate with the lifting rings on the filter element frame to install several filter element structures into the cavity structure on the filter bracket; Connect the assembled device to external equipment, allowing air to enter through the inlet and exit through the outlet; By controlling the first rotary drive mechanism and the second rotary drive mechanism to operate simultaneously, the switching plate is driven to close the inlet and outlet of one of the filter channels, allowing the target gas to be introduced. When the pressure difference between the inlet pressure gauge and the outlet pressure gauge is greater than the set value, the first rotary drive mechanism and the second rotary drive mechanism are controlled to operate simultaneously, driving the switching plate to close the inlet and outlet of the filter channel that is being filtered, and open the inlet and outlet of the other filter channel for filtration. By using the lifting structure on the outside of the device housing and the lifting rings on the filter element frame, several filter elements used for filtration can be pulled out from the cavity structure on the filter bracket for cleaning, and then reinstalled into the cavity structure for filtration. Repeat the above steps to complete the exhaust gas filtration operation.

[0006] One or more technical solutions of the present invention have the following beneficial effects: This invention provides a filtration device and its usage method for treating exhaust gas from a curing oven. By adopting a dual-filtration channel structure and using switching plates at both ends of the air inlet and outlet, the channel switching is controlled by a first rotary drive mechanism and a second rotary drive mechanism. When the resistance of one filtration channel increases due to fiber accumulation, it can quickly switch to another channel to continue working, achieving continuous operation without stopping the machine. This effectively overcomes the shortcomings of traditional cyclone separators and bag filters that require shutdown for cleaning.

[0007] The filter channel features a slidable and detachable triangular prism filter element structure, which increases the filtration area and improves the ability to capture fine fibers. At the same time, the inclined filter surface of the filter element structure reduces the air impact area, thereby reducing the size of the filtration holes for exhaust gas and achieving more efficient fiber separation. The lifting structure at the top of the device, together with the lifting rings and push-pull plates on the filter element frame, makes it easier to remove and clean the filter element, significantly reducing maintenance difficulty and time costs. Attached Figure Description

[0008] Figure 1 This is an internal structural diagram of a filtration device for treating exhaust gas from a curing oven, provided in Embodiment 1 of the present invention. Figure 2 This is a top view of a filtration device for treating exhaust gas from a curing oven, provided in Embodiment 1 of the present invention. Figure 3 This is a partially enlarged schematic diagram of the filter element structure provided in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the filter element structure provided in Embodiment 1 of the present invention; Figure 5 This is a front view of a filtration device for treating exhaust gas from a curing oven, provided in Embodiment 1 of the present invention.

[0009] In the diagram: 1. Device housing; 2. Filter bracket; 3. Filter element structure; 301. Filter element frame; 302. Filter screen mounting frame; 303. Lifting ring structure; 304. Push-pull plate; 4. First diversion plate; 5. Second diversion plate; 6. First rotary drive mechanism; 7. Second rotary drive mechanism; 8. Inlet pressure gauge; 9. Outlet pressure gauge; 10. Inlet; 11. Outlet; 12. Lifting structure; 13. Filter chamber door; 14. Connecting bracket; 15. Support slide. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Example 1 In a typical embodiment of the present invention, a filtration device for treating exhaust gas from a curing oven is provided, comprising a device housing 1, an air inlet 10 at one end of the device housing 1, and an air outlet 11 at the other end of the device housing 1. Two filtration channels are provided within the device housing 1 between the air inlet 10 and the air outlet 11. A first switching plate 4 is provided at one end of each filtration channel near the air inlet 10. The first switching plate 4 is connected to a first rotary drive mechanism 6 and rotates under the drive of the first rotary drive mechanism 6 to switch the opening and closing states of the inlets of the two filtration channels. A second switching plate 5 is provided at one end of each filtration channel near the air outlet 11 and is connected to a second rotary drive mechanism 7. The second switching plate 5 rotates under the drive of the second rotary drive mechanism 7 to switch the opening and closing states of the outlets of the two filtration channels. A filter support 2 is provided inside the filtration channel, and several filter element structures 3 are detachably mounted on the filter support 2. By setting up two filtration channels, and configuring a first switching plate 4 and a second switching plate 5 at the inlet and outlet of each filtration channel respectively, and controlling the rotation of the switching plates by a rotary drive mechanism, the inlet and outlet states of the two filtration channels can be switched. This design allows the device to operate one filtration channel while the other is in standby or maintenance mode, thus achieving continuous filtration. When the filter element structure 3 of one filtration channel becomes clogged due to fiber accumulation, the other channel can be quickly activated by switching the switching plate, avoiding production line downtime. At the same time, the detachable filter element structure 3 on the filter support 2 makes filter element replacement and cleaning more convenient, improving the maintenance efficiency and operational flexibility of the device, and effectively solving the problem of frequent shutdowns for cleaning due to clogging in traditional separation equipment.

[0012] In this embodiment, the device housing 1 is configured as a rectangular structure. The air inlet 10 is located at one side rib of the device housing 1, and the air outlet 11 is symmetrically located at the other side rib of the device housing 1 opposite to the air inlet 10. The axes of the air inlet 10 and the air outlet 11 are coincident. The filter channels are symmetrically located at the other two side ribs of the device housing 1 with the axes of the air inlet 10 and the air outlet 11 as the center line of symmetry.

[0013] The device housing 1 is designed as a rectangular structure, with the air inlet 10 and outlet 11 symmetrically positioned at the side ribs at both ends of the housing, their axes coinciding. Filter channels are symmetrically arranged at the other two side ribs of the housing with this axis as their center of symmetry. This symmetrical layout optimizes the airflow distribution within the device, reduces gas flow resistance and energy loss, and improves filtration efficiency. The coincidence of the air inlet 10 and outlet 11's axes ensures smoother gas entry and exit, avoiding turbulence or increased pressure drop caused by sudden changes in airflow direction, further enhancing the device's stability and filtration performance.

[0014] In this embodiment, the inlet ends of the two filter channels are set at a 90-degree angle, with the angle facing the air inlet 10, and a first rotary drive mechanism 6 is provided at the angle. The outlet ends of the two filter channels are set at a 90-degree angle, with the angle facing the air outlet 11, and a second rotary drive mechanism 7 is provided at the angle. The inlet ends of the two filter channels are set at a specific angle, with the angle facing the air inlet 10, and the outlet ends are also set at a specific angle, facing the air outlet 11. The rotary drive mechanism is located at the angle. This angled design allows the switching plate to switch the opening and closing states of the channels more accurately and efficiently when rotating, reducing airflow interference and leakage risks during the switching process. The layout with the angles facing the air inlet 10 and the air outlet 11 ensures a natural transition in gas flow when entering and leaving the filter channels, reducing local resistance, improving overall airflow uniformity, thereby extending the service life of the filter element structure 3 and maintaining a stable filtration effect.

[0015] In this embodiment, an air inlet pressure gauge 8 is provided at the air inlet 10, and an air outlet pressure gauge 9 is provided at the air outlet 11. An inlet pressure gauge 8 and an outlet pressure gauge 9 are installed at the inlet 10 and outlet 11, respectively, to monitor the gas pressure at the inlet and outlet of the device in real time. By comparing the difference between the inlet and outlet pressures, the degree of clogging of the filter element structure 3 can be accurately determined. When the pressure difference exceeds a set value, it indicates that the filter element needs cleaning or replacement, at which point the control system can be triggered to switch channels. This pressure monitoring mechanism realizes real-time feedback and automatic control of the filtration status, ensuring that the device always operates under optimal conditions and avoiding efficiency reduction or equipment damage caused by excessive filter element clogging.

[0016] In this embodiment, the filter support 2 has several cavity structures inside, and a support slide 15 is provided in the cavity structures. A filter element structure 3 is slidably provided on the support slide 15. The filter element structure 3 includes a filter element frame 301. The filter element frame 301 is configured as a triangular prism structure. The triangular prism structure is vertically arranged on the side facing the air inlet 10. Filter screens are provided on the two sides of the triangular prism structure near the air outlet 11. The filter support 2 has multiple cavity structures inside, each cavity containing a support slide 15. The filter element structure 3 is slidably installed on the support slide 15. This sliding installation method makes the installation and removal of the filter element simpler, allowing maintenance to be completed without complicated tools. Two sides of the filter element frame 301 have filter screen mounting frames 302, on which the filter screen can be detachably installed.

[0017] In addition, such as Figure 4As shown, the filter element structure 3 adopts a triangular prism filter element frame 301. When the frame is installed, one side of its triangular prism structure faces the air inlet 10 vertically, while the two sides near the air outlet 11 are equipped with filter screens, forming a V-shaped capture structure with the opening facing the air inlet 10. The filter screen is made of steel wire mesh.

[0018] The gas in the airflow is obstructed by the inclined wire mesh, creating a significant airflow bypass effect. The gas then continues its journey, avoiding the wire mesh. Meanwhile, various impurities in the airflow, such as rock wool fibers, due to their inherent mass, cannot avoid the wire mesh in time and instead collide with it, causing the rock wool fibers to separate from the exhaust gas. Simultaneously, volatile components in the gas condense during the gas transport process and pipeline pressure fluctuations, reforming into small, sticky droplets. These droplets also cannot avoid the wire mesh in time, acting as a binder to adhere the rock wool fibers to the wire mesh. This adhered rock wool fiber then creates a new airflow bypass effect on the subsequent curing furnace exhaust gas, causing the fibers to grow longer and larger, quickly covering the entire gap in the wire mesh and forming a fine filter. This fine filter, with its small pores, can directly filter subsequent rock wool fibers, further separating them from the curing furnace exhaust gas.

[0019] Meanwhile, after a period of use, excessive impurities on the filter screen reduce the filtration effect. With the auxiliary disassembly and assembly structure set in this embodiment, the filter element structure 3 on one side can be quickly and conveniently disassembled and assembled manually, and the filter element structure 3 on the other side can be used for filtration, achieving quick replacement without stopping the machine.

[0020] This design, compared to traditional vertically arranged filters, significantly increases the effective filter area by placing filters on two inclined sides. Furthermore, since the filter surface is not perpendicular to the airflow but at a certain angle, the gas can pass through more smoothly in a direction close to perpendicular to the filter, reducing the actual resistance to gas passage and thus increasing gas permeability. This creates a unique filtration mechanism for the inclined filter surface. During the filtration process, the incompletely cured resin and other viscous components contained in the exhaust gas promote the adhesion and capture of fibers on the filter surface to a certain extent, thereby improving the capture efficiency of rock wool fibers, especially fine fibers.

[0021] By reducing the impact area of ​​the filter screen, fiber particles are more easily intercepted and captured by the inclined filter surface due to inertia, while the airflow can pass through smoothly. This not only efficiently captures fibers, but also greatly alleviates the clogging problem caused by the rapid and dense accumulation of fibers. This feature effectively extends the interval between cleaning sessions and reduces the frequency of maintenance.

[0022] In addition, the vertical arrangement of the filter element frame 301 ensures that the gas is more evenly distributed when flowing through the filter screen, further avoiding premature clogging in local areas, comprehensively extending the service life of the filter element structure 3, and ensuring the continuity and stability of the device operation.

[0023] In this embodiment, the top of the device housing 1 is provided with a hoisting structure 12, the filter element frame 301 is provided with a hoisting ring structure 303, and the filter element frame 301 is provided with a push-pull plate 304 at one end outside the device housing 1. The push-pull plate 304 has the same cross-sectional area as the cavity structure. A lifting structure 12 is installed on the top of the device housing 1, and a lifting ring structure 303 is configured on the filter element frame 301. Simultaneously, a push-pull plate 304 is provided at the external end of the filter element frame 301, with the push-pull plate 304 having the same cross-sectional area as the cavity structure. The cooperation between the lifting structure 12 and the lifting ring allows the installation and removal of the filter element to be completed with the assistance of lifting equipment, greatly reducing the difficulty and labor intensity of manual operation. The design of the push-pull plate 304 facilitates direct pushing and pulling of the filter element structure 3 by operators, enabling quick removal and installation, further shortening maintenance time and improving the availability and production efficiency of the device.

[0024] In this embodiment, a filter chamber door 13 is provided on the side of the device housing 1 corresponding to the filter bracket 2. A connecting bracket 14 is provided between the outside of the filter chamber door 13 and the device housing 1. One end of the connecting bracket 14 is hinged to the device housing 1, and the other end of the connecting bracket 14 is hinged to the filter chamber door 13. A filter chamber door 13 is provided on the side of the device housing 1 corresponding to the filter bracket 2. The filter chamber door 13 is hinged to the device housing 1 via a connecting bracket 14. One end of the connecting bracket 14 is hinged to the housing, and the other end is hinged to the filter chamber door 13, allowing the filter chamber door 13 to be opened and closed flexibly. This design provides a convenient passage for the maintenance and cleaning of the filter element structure 3, allowing operators to replace or clean the filter element without disassembling the entire device. The hinged structure ensures the stability and sealing of the door, effectively preventing gas leakage when closed and ensuring the safe operation of the device.

[0025] In this embodiment, a control system is also included, which is used to control the first rotary drive mechanism 6 and the second rotary drive mechanism 7 to run and stop simultaneously. The control system automates the switching of the switching plates, ensuring the synchronous opening and closing of the inlet and outlet of the two filter channels, thus avoiding airflow short-circuiting or pressure fluctuations caused by asynchronous switching. This automated control reduces manual intervention, improves the accuracy and reliability of operation, and enables the device to automatically adjust its operating status according to actual working conditions, further ensuring the continuity and stability of the filtration process.

[0026] In this embodiment, both the first rotary drive mechanism 6 and the second rotary drive mechanism 7 are configured as pneumatic rotary mechanisms, and the control system is configured as an air circuit control system. Both the first rotary drive mechanism 6 and the second rotary drive mechanism 7 are connected to the air circuit control system, which is used to control the first rotary drive mechanism 6 and the second rotary drive mechanism 7 to run and stop simultaneously. The first rotary drive mechanism 6 and the second rotary drive mechanism 7 are configured as pneumatic rotary mechanisms, and the control system is configured as a pneumatic circuit control system. The two are connected and controlled by the pneumatic circuit control system to operate and stop simultaneously. The pneumatic drive method is suitable for use in high-temperature and high-humidity exhaust gas environments, and has the advantages of explosion-proof, corrosion-resistant, and fast response. The pneumatic circuit control system has a simple structure and is easy to maintain. It can reliably achieve synchronous switching of the switching plates, ensuring long-term stable operation of the device under harsh conditions and reducing the risk of electrical failures and maintenance costs.

[0027] In a second aspect of the invention, a method of using a filtration device for treating exhaust gas from a curing oven is provided, comprising: Open the filter chamber door 13, and use the hoisting structure 12 outside the device housing 1 to cooperate with the lifting ring on the filter element frame 301 to install several filter element structures 3 into the cavity structure on the filter bracket 2 respectively; Connect the assembled device to external equipment, with air intake through inlet 10 and air outlet 11. By controlling the first rotary drive mechanism 6 and the second rotary drive mechanism 7 to operate simultaneously, the switching plate is driven to close the inlet and outlet of one of the filter channels, allowing the target gas to be introduced. When the pressure difference between the inlet pressure gauge 8 and the outlet pressure gauge 9 is greater than the set value, the first rotary drive mechanism 6 and the second rotary drive mechanism 7 are controlled to operate simultaneously, driving the switching plate to close the inlet and outlet of the filter channel that is being filtered, and open the inlet and outlet of the other filter channel for filtration. By cooperating with the lifting ring on the filter frame 301 through the lifting structure 12 outside the device housing 1, several filter structures 3 used for filtration are respectively pulled out from the cavity structure on the filter bracket 2 for cleaning, and then installed back into the cavity structure for filtration. Repeat the above steps to complete the exhaust gas filtration operation.

[0028] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A filtration device for treating exhaust gas from a curing oven, characterized in that, The device includes a housing, with an air inlet at one end and an air outlet at the other end. Two filter channels are located within the housing between the air inlet and outlet. A first switching plate is located at the end of each filter channel near the air inlet, connected to a first rotary drive mechanism. The first switching plate rotates under the drive of the first rotary drive mechanism to switch the open / closed state of the two filter channel inlets. A second switching plate is located at the end of each filter channel near the air outlet, connected to a second rotary drive mechanism. The second switching plate rotates under the drive of the second rotary drive mechanism to switch the open / closed state of the two filter channel outlets. A filter support is located inside each filter channel, and several filter element structures are detachably mounted on the filter support. The device housing is configured as a rectangular structure. The air inlet is located at one side rib of the device housing. The air outlet is symmetrically located at the other side rib of the device housing opposite to the air inlet. The axes of the air inlet and the air outlet coincide. The filter channels are symmetrically located at the other two side ribs of the device housing with the axes of the air inlet and the air outlet as the center line of symmetry. The filter support has several cavity structures inside, and a support slide is provided in the cavity structures. A filter element structure is slidably mounted on the support slide. The filter element structure includes a filter element frame. The filter element frame is configured as a triangular prism structure. The triangular prism structure is vertically arranged on the side facing the air inlet. Filter screens are provided on the two sides of the triangular prism structure near the air outlet. The top of the device housing is provided with a hoisting structure, the filter element frame is provided with a hoisting ring structure, and the filter element frame is provided with a push-pull plate at one end outside the device housing. The push-pull plate has the same cross-sectional area as the cavity structure. It also includes a control system for controlling the simultaneous operation and stop of the first rotary drive mechanism and the second rotary drive mechanism; Both the first rotary drive mechanism and the second rotary drive mechanism are configured as pneumatic rotary mechanisms, and the control system is configured as an air circuit control system. Both the first rotary drive mechanism and the second rotary drive mechanism are connected to the air circuit control system, which is used to control the first rotary drive mechanism and the second rotary drive mechanism to run and stop simultaneously.

2. The filtration device for treating exhaust gas from a curing oven as described in claim 1, characterized in that, The inlet ends of the two filter channels are set at a first angle of 90 degrees, with the first angle facing the air inlet. A first rotary drive mechanism is provided at the first angle. The outlet ends of the two filter channels are set at a second angle of 90 degrees, with the second angle facing the air outlet. A second rotary drive mechanism is provided at the second angle.

3. The filtration device for treating exhaust gas from a curing oven as described in claim 2, characterized in that, An intake pressure gauge is provided at the air inlet, and an outlet pressure gauge is provided at the air outlet.

4. The filtration device for treating exhaust gas from a curing oven as described in claim 3, characterized in that, The device housing has a filter chamber door on the side corresponding to the filter bracket. A connecting bracket is provided between the outside of the filter chamber door and the device housing. One end of the connecting bracket is hinged to the device housing, and the other end of the connecting bracket is hinged to the filter chamber door.

5. The method of using the filtration device for treating exhaust gas from a curing oven as described in claim 4, characterized in that, include: Open the filter chamber door, and use the hoisting structure on the outside of the device housing and the hoisting ring structure on the filter element frame to install several filter element structures into the cavity structure on the filter bracket. Connect the assembled device to external equipment, allowing air to enter through the inlet and exit through the outlet; By controlling the first rotary drive mechanism and the second rotary drive mechanism to operate simultaneously, the switching plate is driven to close the inlet and outlet of one of the filter channels, allowing the target gas to be introduced. When the pressure difference between the inlet pressure gauge and the outlet pressure gauge is greater than the set value, the first rotary drive mechanism and the second rotary drive mechanism are controlled to operate simultaneously, driving the switching plate to close the inlet and outlet of the filter channel that is being filtered, while opening the inlet and outlet of the other filter channel for filtration. By cooperating with the lifting structure on the outside of the device housing and the lifting ring structure on the filter element frame, several filter elements used for filtration can be pulled out from the cavity structure on the filter bracket for cleaning, and then reinstalled into the cavity structure for filtration. Repeat the above steps to complete the exhaust gas filtration operation.

Images