Atmospheric particulate filtering device

Abstract

The invention relates to the technical field of atmospheric pollution control, and provides an atmospheric particulate filtering device which comprises a lifting unit located in an upper cavity. The scraping pieces are connected to the lower portion of the lifting unit and can move up and down in the anode pipelines under driving of the lifting unit, the scraping pieces correspond to the anode pipelines one to one, and the outer peripheral walls of the scraping pieces are in sliding fit with the inner peripheral walls of the anode pipelines so as to scrape away attachments on the inner peripheral walls of the anode pipelines. According to the technical scheme, the cleaning process is upgraded from pure liquid scouring to'pressure driving type mechanical scraping and directional liquid flow assistance ', especially for substances such as acid condensate crystals and high-viscosity pollutants which are difficult to treat through traditional spraying, the interface bonding force is directly destroyed through physical contact, and the cleaning efficiency is remarkably improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of air pollution control, and more specifically, to an air particulate filtering device. Background Art

[0002] With the continuous increase of pollution sources such as industrial flue gas and vehicle exhaust, the treatment of air particulate matter (PM2.5, PM10, etc.) has become an important topic in global environmental protection. Wet electrostatic precipitation technology has been widely used in the end-of-pipe flue gas purification of industries such as thermal power, steel, and chemical industries due to its advantages of high-efficiency dust removal, removal of aerosols and heavy metals. This technology charges particulate matter by constructing a high-voltage electrostatic field inside the dust removal device, then uses the water mist generated by the spraying system to capture the charged particles, and finally collects pollutants through the dust collecting plate and completes gas-liquid separation. The cleaning systems of existing wet electrostatic precipitation devices generally adopt a top spraying structure, which sprays cleaning liquid downward through several spray heads arranged at the top of the air duct, and relies on the action of gravity to wash the dust collecting plate and the inner wall of the air duct. However, this cleaning method has significant defects: the spraying liquid shows a vertical downward trend under the influence of gravity, and can only effectively wash the top and central areas of the air duct, with insufficient washing force on the attached pollutants on the side walls and the bottom (especially in the low-flow-rate area of the air flow), which is likely to form a liquid accumulation blind area at the bottom of the air duct, resulting in long-term attachment and concentration crystallization of particulate matter, acidic condensate and viscous impurities, forming a hard scale layer that is difficult to remove. Such problems will not only lead to a decrease in dust removal efficiency over the operation time, but also increase the operation resistance of the equipment, cause corrosion of the dust collecting plate and even safety hazards such as electric field short circuit. Although some existing technologies attempt to improve the cleaning effect by increasing the number of spray heads or increasing the water pressure, the problem of cleaning blind areas on the side walls and the bottom has not been fundamentally solved from the flow field structure and cleaning path, and it is still difficult to break the adhesion between pollutants and the pipe wall for high-humidity and high-viscosity pollutants, often requiring manual intervention during shutdown, resulting in an increase in maintenance costs. Summary of the Invention

[0003] To overcome the above defects, embodiments of the present invention provide an air particulate filtering device, which solves the technical problem that in the prior art, the inner wall of the air duct is only cleaned by the top spraying system during the cleaning process of the wet electrostatic precipitation device, resulting in poor cleaning effect.

[0004] According to one aspect, at least one embodiment of the present invention provides an air particulate filtering device, including: A frame, the frame having an upper chamber and a lower chamber; the upper chamber and the lower chamber are communicated through a plurality of anode pipes, and a cathode wire is penetrated through the anode pipes, and both ends of the cathode wire are respectively fixed to the inner walls of the upper chamber and the lower chamber; A lifting unit, the lifting unit being located in the upper chamber; A scraper is connected to the bottom of the lifting unit and can move up and down in the anode pipe under the drive of the lifting unit. There are several scrapers, and they are arranged in a one-to-one correspondence with the anode pipes. The outer wall of the scraper is slidably matched with the inner wall of the anode pipe to scrape off attachments on the inner wall of the anode pipe.

[0005] For example, in an atmospheric particulate matter filtering device provided by at least one embodiment of the present invention, the lifting unit includes: A lifting plate is vertically slidably disposed in the upper chamber, the lifting plate being capable of moving downward and fitting into contact with the upper end of the anode pipe; a plurality of water injection ports are provided on the lifting plate, the plurality of water injection ports corresponding to the plurality of anode pipes being disposed one-to-one, the water injection ports being connected to an external high-pressure cleaning liquid source via a hose, and a driving member for driving the lifting plate to move upward and downward on the frame; a winch, the winch being disposed in the upper chamber and having a rope connected to the scraper; The scraping member can enter the anode pipe under the downward movement of the lifting plate, and can continue to move downward under the pressure of the high-pressure cleaning liquid entering the water injection port to scrape off attachments on the inner wall of the anode pipe; After the scraping member finishes scraping the anode pipe, the hoist can reel in the rope to drive the scraping member to move upward and away from the anode pipe.

[0006] For example, in an atmospheric particulate matter filtering device provided in at least one embodiment of the present invention, a liquid distribution cavity connected to the water inlet is opened in the lifting plate, and a plurality of liquid distribution holes are penetrated through the bottom wall of the liquid distribution cavity, and the plurality of liquid distribution holes are distributed along the circumference of the scraper.

[0007] For example, in an atmospheric particulate matter filtering device provided by at least one embodiment of the present invention, the scraper is provided with a through spray hole, which is used for allowing the cleaning liquid to pass from top to bottom and spray onto the inner wall of the anode pipe.

[0008] For example, in an atmospheric particulate matter filtering device provided by at least one embodiment of the present invention, the scraper has an inner cavity connected to the middle portion of the liquid spray hole, the liquid spray hole includes a water inlet section located above the inner cavity and a water outlet section located below the inner cavity, the upper opening of the water outlet section is arranged to pass through the peripheral wall of the inner cavity, a baffle that can be lifted and lowered is slidably connected to the inner cavity, and the outer peripheral wall of the baffle is slidably matched with the inner peripheral wall of the inner cavity and is sealed; An elastic member is provided between the baffle and the bottom wall of the inner cavity, and the elastic member is used to elastically push the baffle upward; when the pressure of the cleaning liquid above the baffle is greater than the elastic pushing force of the elastic member, the baffle can move downward to below the upper opening of the water outlet section, so that the water outlet section is communicated with the inner cavity.

[0009] For example, in an atmospheric particulate filtering device provided by at least one embodiment of the present invention, a rotating ring is rotatably connected to the bottom of the scraping member, and a plurality of fan blades are provided on the outer peripheral wall of the rotating ring; the fan blades can drive the rotating ring to rotate under the impact of the cleaning liquid ejected from the liquid spraying holes, so as to disperse the cleaning liquid to the inner wall of the anode pipe by means of the fan blades.

[0010] For example, in an atmospheric particulate filtering device provided by at least one embodiment of the present invention, an included angle is formed between the water outlet direction of the liquid spraying hole and the rotation axis of the rotating ring, so that the cleaning liquid ejected from the liquid spraying hole can impact the fan blades.

[0011] For example, in an atmospheric particulate filtering device provided by at least one embodiment of the present invention, a positioning protrusion is provided at the bottom of the lifting plate, and a positioning groove is provided at the top of the scraping member. After the scraping member is reset by the winding of the winch, the positioning protrusion can be engaged with the positioning groove.

[0012] For example, in an atmospheric particulate filtering device provided by at least one embodiment of the present invention, the water inlet section forms the positioning groove, the positioning protrusion is a hollow structure and is in vertical correspondence and communication with the liquid distribution hole, and the positioning protrusion and the positioning groove are communicated with each other, so that the cleaning liquid enters the inner cavity from the liquid distribution cavity.

[0013] For example, in an atmospheric particulate filtering device provided by at least one embodiment of the present invention, a plurality of sealing ring grooves are provided at the bottom of the lifting plate, and a sealing convex ring is provided at the upper port of the anode pipe. After the lifting plate approaches and seals the upper port of the anode pipe, the sealing convex ring is engaged with the sealing ring grooves to form a seal.

[0014] The beneficial effects of the embodiments of the present invention are as follows: In the present invention, the cleaning process is upgraded from simple liquid flushing to "pressure-driven mechanical scraping + directional liquid flow assistance". Especially for substances such as acidic condensate crystallization and highly viscous pollutants that are difficult to handle by traditional spraying, the interfacial bonding force is directly destroyed through physical contact, significantly improving the cleaning efficiency. At the same time, the modular lifting unit design can independently control the cleaning rhythm of each anode pipe, adapt to the differentiated maintenance requirements under different working conditions, reduce the overall equipment downtime frequency and manual intervention cost, and break through the existing technical bottlenecks from two aspects of flow field structure optimization and cleaning path innovation. Brief Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some exemplary embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on the content of the exemplary embodiments of the present invention and these drawings.

[0016] Figure 1 It is a schematic structural diagram of an air particulate filter device in an embodiment of the present invention; Figure 2 For Figure 1 it is a schematic internal sectional structure diagram of an air particulate filter device in the embodiment of Figure 3 For Figure 2 it is an enlarged view at A in Figure 4 For Figure 1 it is a schematic structural diagram of a scraping member in the embodiment of Figure 5 For Figure 1 it is a schematic first sectional structure diagram of a scraping member in the embodiment of Figure 6 For Figure 1 it is a schematic second sectional structure diagram of a scraping member in the embodiment of

[0017] In the figure: 1. Frame, 11. Upper chamber, 12. Lower chamber, 2. Anode pipe, 3. Cathode wire, 4. Lifting plate, 5. Scraping member, 41. Water injection port, 6. Winch, 42. Liquid distribution chamber, 43. Liquid distribution holes, 51. Liquid spraying holes, 52. Inner cavity, 7. Baffle, 8. Elastic member, 9. Rotating ring, 91. Fan blades, 44. Positioning protrusions, 53. Positioning grooves, 45. Sealing ring grooves, 21. Sealing convex rings. Detailed implementation manners The following will further elaborate on the present invention in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention.

[0018] To make the drawings concise, only the parts related to the disclosure are schematically shown in each drawing, and they do not represent the actual structure of the product. Additionally, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is labeled. In this document, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".

[0019] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "join" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0021] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0022] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0023] As Figures 1 to 3 shown, it shows an atmospheric particulate filtering device in an embodiment of the present invention. In this embodiment, the cleaning of the inner wall of the anode pipe 2 is achieved by the lifting plate 4 arranged to be lifted in the frame 1 and the scraping member 5 located below the lifting plate 4.

[0024] The frame 1 is a vertical hollow frame structure, divided by two horizontally arranged upper and lower partitions into an upper chamber 11, a lower chamber 12, and an installation chamber for the anode pipe 2. The partitions are evenly spaced with several through-holes. The anode pipe 2 is vertically fixed in the installation holes, its upper end communicating with the upper chamber 11 and its lower end communicating with the lower chamber 12. The cathode wire 3 extends along the central axis of the anode pipe 2, its upper end secured to the top inner wall of the upper chamber 11 via insulating supports (insulator strings) and its lower end secured to the bottom inner wall of the lower chamber 12 via insulating bases, forming a high-voltage electrostatic field. The lifting unit comprises guide rails vertically arranged on either side of the upper chamber 11, a lifting plate 4 that slides with the guide rails, and a drive mechanism that drives the lifting plate 4. The drive mechanism can be driven by a pneumatic cylinder (or a screw-nut assembly). Cylinders located at the four corners of the lifting plate extend and retract to drive the lifting plate 4 up and down along the guide rails. The scraper 5 is a cylindrical disc component, and its number corresponds one-to-one with the anode pipe 2. Its top is connected to the bottom surface of the lifting plate 4 through a clamping mechanism, and the outer peripheral wall forms a sliding fit with the inner peripheral wall of the anode pipe 2. The cross-sectional profile adapts to the shape of the inner wall of the pipe (for example, a circular pipe corresponds to a cylindrical scraper 5, and a rectangular pipe corresponds to a rectangular scraper 5).

[0025] As the lifting plate 4 descends, the scraper 5 enters the inlet of the anode pipe 2. The lifting plate 4 is provided with water inlets 41, the same number as the anode pipes 2. Each inlet 41 is connected to an external source of high-pressure cleaning fluid via a hose. A hoist 6 is fixed to the top of the upper chamber 11. A steel wire rope passes through a pre-set hole in the lifting plate 4 and connects to the top of the scraper 5. The wire rope is retracted and released by the drum of the hoist 6. The working process is as follows: during the cleaning operation, the driving mechanism controls the lifting plate 4 to move downward, and the scraper 5 is synchronously lowered with the lifting plate 4 to the upper end of the anode pipe 2. At this time, the water inlet 41 is connected to the inlet of the anode pipe 2; high-pressure cleaning liquid is injected into the water inlet 41 through the hose, and the liquid pressure pushes the scraper 5 to move downward along the inner wall of the anode pipe 2. The scraping part of the outer wall (such as the annular protrusion or spiral edge) contacts the pipe wall and removes the attachments through mechanical friction; when the scraper 5 reaches the bottom of the pipe, the winch 6 starts to reel in the wire rope, causing the liquid to flow back while overcoming the friction to lift the scraper 5 up and reset it, and the lifting plate 4 is synchronously brought back to its initial position by the driving mechanism.

[0026] Through the combination of mechanical scraping and hydraulic drive, a three-dimensional cleaning mechanism is constructed. The chamber separation of the frame 1 and the layout of the anode pipe 2 continue the classic electric field structure of wet electrostatic precipitation. The fixing method of the cathode wire 3 ensures the stability of the high-voltage electric field, and the newly added lifting unit and scraping member 5 break through the limitation of gravity dependence of traditional top spraying. The sliding fit between the outer peripheral wall of the scraping member 5 and the inner wall of the pipe can specifically remove stubborn attachments on the side wall and the low-speed area at the bottom, solving the problems of single liquid flushing path and insufficient adhesion breaking in the prior art. The driving mechanism of the lifting plate 4 adopts a mature transmission method, ensuring the movement accuracy and load capacity. The connection design of the water injection port 41 and the hose not only meets the high-pressure sealing requirements but also allows the lifting plate 4 to move freely.

[0027] The reset structure of the winch 6 and the steel wire rope complements the pressure drive. After the cleaning liquid pressure pushes the scraping member 5 downward to complete the cleaning, it ensures reliable recovery through mechanical winding, avoiding jamming caused by liquid backflow or resistance. The setting of the positioning structure aligns the scraping member 5 with the anode pipe 2 coaxially, ensuring the stability of the sliding process and reducing eccentric wear. This solution upgrades the cleaning process from simple liquid flushing to "pressure-driven mechanical scraping + directional liquid flow assistance". Especially for substances such as acidic condensate crystals and highly viscous pollutants that are difficult to handle by traditional spraying, it directly destroys the interfacial bonding force through physical contact, significantly improving the cleaning efficiency. At the same time, the modular lifting unit design can independently control the cleaning rhythm of each anode pipe 2, adapt to the differentiated maintenance needs under different working conditions, reduce the shutdown frequency of the overall equipment and the manual intervention cost, and break through the bottleneck of the prior art from two aspects of optimizing the flow field structure and innovating the cleaning path.

[0028] As Figures 2 to 3 shown, the lifting plate 4 is a hollow plate-shaped member, with an annular liquid distribution cavity 42 formed inside. The liquid distribution cavity 42 is communicated with the water injection port 41, and the upper end of the water injection port 41 is connected to an external high-pressure cleaning liquid source through a hose. The bottom wall of the liquid distribution cavity 42 is evenly distributed with a number of liquid distribution holes 43 along the circumferential direction with the central axis of the scraping member 5 as the center of the circle. The scraping member 5 is a columnar body with a hollow inside, and it is provided with liquid spraying holes 51 that penetrate through the upper and lower ends. The upper end inlet of the liquid spraying holes 51 is communicated with the lower end of the liquid distribution holes 43 of the lifting plate 4, and the lower end outlet of the liquid spraying holes 51 is located at the bottom end face of the scraping member 5.

[0029] When the lifting plate 4 moves downward to align with the upper end of the anode pipe 2, high-pressure cleaning liquid enters the water inlet 41 through the hose, first forming an annular pressure chamber within the liquid distribution chamber 42. It is then sprayed through the circumferentially distributed liquid distribution holes 43 into the gap between the scraper 5 and the inner wall of the anode pipe 2, forming a liquid flow layer along the circumference of the pipe inner wall. Simultaneously, some cleaning liquid is ejected from the spray holes 51 from top to bottom, forming an axial flushing flow. As the scraper 5 moves downward under the pressure of the liquid, the liquid flow ejected from the spray holes 51 flushes the inner wall of the lower half of the pipe, synergizing with the mechanical scraping action of the outer circumferential wall of the scraper 5 to achieve three-dimensional cleaning of the inner wall of the anode pipe 2. The circumferential layout of the liquid distribution holes 43 ensures that the cleaning liquid pressure evenly covers the top surface of the scraper 5. The spray from the spray holes 51, combined with the scraping action of the scraper 5 itself, can enhance the cleaning effect on the inner wall of the anode pipe 2, compensating for the shortcomings of traditional top spraying in cleaning the side walls and low-speed areas.

[0030] The composite liquid distribution structure of the liquid distribution chamber 42 and the liquid spray holes 51 creates a three-dimensional cleaning flow field that combines circumferential coverage with axial flushing. The interconnected design of the liquid distribution chamber 42 and the water inlet 41 allows the high-pressure cleaning liquid to undergo circumferential diversion before entering the anode pipe 2. The circumferential distribution of the liquid distribution holes 43 along the scraper 5 ensures that the cleaning liquid pressure evenly covers the top surface of the scraper 5. The through-hole structure of the liquid spray holes 51 ensures that the cleaning liquid can reach the bottom of the pipe directly, and in conjunction with the downward movement of the scraper 5, it forms a dual cleaning path of "circumferential spray + axial scraping."

[0031] The circumferential layout of the liquid distribution holes 43 ensures that the pressure of the cleaning liquid evenly covers the top surface of the scraper 5, so that the scraper 5 remains stable during the descent process and avoids deviation due to uneven force, thereby ensuring effective contact between the scraper 5 and the inner wall of the anode pipe 2 and improving the scraping effect. The spray from the liquid spray hole 51 combined with the scraping of the scraper 5 itself can enhance the cleaning effect of the inner wall of the anode pipe 2, making up for the insufficient cleaning of the side walls and low-speed areas by traditional top spraying. The liquid flow sprayed from the liquid spray hole 51 flushes the inner wall of the lower half of the pipe, and forms a synergistic effect with the mechanical scraping action of the outer peripheral wall of the scraper 5 to achieve three-dimensional cleaning of the inner wall of the anode pipe 2 and effectively remove pollutants attached to the inner wall of the pipe.

[0032] Through the composite liquid distribution structure of the liquid distribution cavity 42 and the liquid spray hole 51, a three-dimensional cleaning flow field combining circumferential coverage and axial flushing is realized, thereby improving the cleaning efficiency and effect, solving the cleaning blind spot problem existing in the traditional top spray cleaning method, and providing a strong guarantee for the efficient operation of the atmospheric particulate matter filtering device.

[0033] like Figures 4 to 6As shown in the figure, an axially extending inner cavity 52 is provided inside the scraping member 5. The inner cavity 52 is located in the middle region of the liquid spraying hole 51, dividing the liquid spraying hole 51 into upper and lower sections: the upper section is the water inlet section, which is communicated with the liquid distribution hole 43 of the lifting plate 4; the lower section is the water outlet section, which is inclined, and its opening faces the inner wall of the anode pipe 2. The peripheral wall of the inner cavity 52 is provided with a horizontally penetrating water outlet section interface, so that the upper opening of the water outlet section is communicated with the inner cavity 52. The baffle 7 is a disc-shaped member, and its outer peripheral wall is slidably and sealingly fitted with the inner wall of the inner cavity 52 and can move along the axis direction of the inner cavity 52. The elastic member 8 is a compression spring, which is arranged between the baffle 7 and the bottom wall of the inner cavity 52. In the initial state, it pushes the baffle 7 upward to cover the water outlet section interface and block the communication between the inner cavity 52 and the water outlet section.

[0034] The bottom of the scraping member 5 is rotatably connected to the rotating ring 9 through a bearing. A plurality of fan blades 91 are evenly distributed along the circumference on the outer peripheral wall of the rotating ring 9. The plane where the fan blades 91 are located is inclined with respect to the axis of the rotating ring 9. The outlet direction of the water outlet section of the liquid spraying hole 51 forms the same inclined angle with the axis of the rotating ring 9 to ensure that the cleaning liquid jet ejected can impact the oncoming surface of the fan blades 91.

[0035] The working process is as follows: When the high-pressure cleaning liquid enters above the inner cavity 52 from the water inlet section, the liquid pressure acts on the upper surface of the baffle 7. When the pressure exceeds the initial pushing force of the elastic member 8, the baffle 7 compresses the spring and moves downward until the water outlet section interface is completely exposed. The cleaning liquid enters the water outlet section through the inner cavity 52 and is ejected at high speed. The ejected liquid flow can not only wash the bottom of the anode pipe 2 along the direction, but also impact the fan blades 91 at an inclined angle, and use the fluid impact force to drive the rotating ring 9 to rotate around the axis of the scraping member 5. The rotational movement of the rotating ring 9 causes the fan blades 91 to scatter the cleaning liquid circumferentially, forming a uniform liquid film covering the entire circumference of the pipe inner wall. At the same time, the stirring action of the fan blades 91 enhances the shear force of the liquid flow on the attachments on the pipe wall. When the pressure of the cleaning liquid decreases, the elastic member 8 pushes the baffle 7 to reset, blocking the water outlet section interface, stopping the liquid spraying and preventing the liquid from flowing back.

[0036] Through the pressure-driven liquid spraying control and the hydraulic self-driven rotation structure, a dynamically adjustable three-dimensional cleaning system is constructed. The cooperation between the inner cavity 52 and the baffle 7 forms an automatically opened and closed liquid control valve, which only opens the liquid spraying under the action of high-pressure cleaning liquid, avoiding liquid leakage in the low-pressure state and ensuring that the cleaning energy is concentrated in the effective operation stage. The setting of the elastic member 8 enables the liquid spraying threshold to be adjusted through the spring stiffness to adapt to the cleaning requirements of different viscosity pollutants.

[0037] The design of the rotating ring 9 and the fan blades 91 converts the kinetic energy of the cleaning liquid into circumferential rotational power without the need for an additional driving device. The inclination angle of the sprayed liquid flow is used to generate a tangential component, so that the fan blades 91 drive the rotating ring 9 to rotate at a uniform speed, thereby achieving a morphological transformation of the cleaning liquid from axial injection to circumferential diffusion. This design breaks through the limitations of the traditional vertical drop of the spray liquid, allowing the liquid flow to evenly cover the side walls of the pipe, especially forming a continuous flushing of attachments in the low-speed area of the air flow. The angle between the water outlet direction of the spray hole 51 and the axis of rotation optimizes the liquid flow impact efficiency, ensuring that the rotating ring 9 obtains a stable rotation speed under the rated pressure, thereby forming a spirally flowing cleaning liquid film, extending the contact time between the liquid flow and the pipe wall, and enhancing the infiltration and stripping effect on sticky impurities.

[0038] The synergistic effects of this solution are reflected in: a pressure-controlled valve ensures synchronization of liquid spray timing with the cleaning stroke, preventing ineffective spraying; hydraulically driven rotation achieves 360° coverage of the cleaning range; and the tilted spray angle balances axial flushing and circumferential dispersion. This structure is particularly suitable for acidic condensate scale layers and highly viscous contaminants in high-humidity conditions. Through the combined mechanism of "pressure-triggered liquid spraying-mechanical rotational dispersion-liquid shear stripping," it effectively breaks the adhesion of contaminants to the pipe wall, solving the problems of blind spots in sidewall cleaning and uneven liquid flow distribution in existing technologies. It improves cleaning efficiency while reducing water pressure requirements and the frequency of equipment downtime and maintenance.

[0039] like Figures 2 to 6 As shown, the bottom of the lifting plate 4 is equipped with multiple cylindrical positioning protrusions 44, corresponding to each scraper 5. These protrusions form a hollow channel structure, the upper ends of which communicate vertically with the liquid distribution holes 43 of the liquid distribution chamber 42. The top of the scraper 5 is provided with a positioning groove 53, formed by the expansion of the water inlet section of the liquid spray hole 51. The inner wall of the positioning groove 53 slides with the outer wall of the positioning protrusion 44. When the winch 6 reels in the rope to move the scraper 5 upward and back to its original position, the positioning protrusion 44 inserts into the positioning groove 53, and the mating surfaces of the two form a circumferential limit structure.

[0040] The bottom surface of the lifting plate 4 is provided with a sealing ring groove 45 corresponding one-to-one with the anode pipe 2. The cross-section of the sealing ring groove 45 is trapezoidal or rectangular, and the groove depth and width are designed according to the sealing requirements. A sealing convex ring 21 is provided on the outer periphery of the upper port of the anode pipe 2 to adapt to the sealing ring groove 45. The height of the convex ring matches the depth of the ring groove, and the outer contour forms an interference fit with the inner contour of the ring groove. When the lifting plate 4 is moved down to a position close to the upper port of the anode pipe 2 by the driving member, the sealing convex ring 21 is embedded in the sealing ring groove 45. The mating surfaces of the two form a mechanical seal structure, preventing the cleaning liquid from leaking through the gap between the upper port and the lifting plate 4.

[0041] The working process is as follows: Before the cleaning operation, the scraping part 5 is lifted to the initial position by the hoist 6, and the positioning protrusion 44 is clamped with the positioning groove 53 to ensure that the axis of the scraping part 5 is coaxial with the axis of the anode pipe 2. When the lifting plate 4 moves downward, the scraping part 5 gradually enters the anode pipe 2. Then, the sealing convex ring 21 contacts the edge of the sealing ring groove 45. As it moves downward in place, the sealing convex ring 21 is completely embedded in the sealing ring groove 45 to form a circumferential seal. After the high-pressure cleaning liquid enters the liquid distribution cavity 42 from the water injection port 41, it flows into the inner cavity 52 of the scraping part 5 through the hollow channel of the positioning protrusion 44, driving the scraping part 5 to move downward in the anode pipe 2. When the pressure of the external cleaning liquid is continuously increased, the pressure of the cleaning liquid can push the baffle 7 to slide downward in the inner cavity 52 and spray out through the liquid spraying holes 51 to realize the rotation of the fan blades, so as to perform the combined cleaning of spraying and scraping on the anode pipe 2. After the cleaning is completed, the hoist 6 winds up the rope. During the upward movement of the scraping part 5, the positioning protrusion 44 and the positioning groove 53 remain in cooperation until the lifting plate 4 is reset and the sealing convex ring 21 disengages from the sealing ring groove 45, completing one cleaning cycle.

[0042] Through the positioning clamping and sealing cooperation structure, a dual guarantee system for accurate alignment and liquid path sealing is constructed. The coaxial design of the positioning protrusion 44 and the positioning groove 53 ensures that the scraping part 5 accurately aligns with the inlet of the anode pipe 2 when reset, avoiding scraping failure or damage to the inner wall of the pipe caused by deviation. At the same time, the hollow channel structure realizes the leak-free transmission of the cleaning liquid from the lifting plate 4 to the scraping part 5, ensuring the coherence of the liquid spraying system. The clamping cooperation between the sealing ring groove 45 and the sealing convex ring 21, aiming at the leakage problem of the traditional top spraying structure, restricts the high-pressure cleaning liquid in the anode pipe 2 through mechanical sealing, avoiding the corrosion of other components of the equipment by the overflow of the cleaning liquid. At the same time, it ensures that the liquid flow pressure fully acts on the driving of the scraping part 5 and the flushing of the pipe, improving the utilization rate of cleaning energy.

[0043] The synergy of this solution is reflected in that the positioning structure provides an installation reference for the sealing structure to ensure the accurate alignment of the sealing convex ring 21 and the sealing ring groove 45; the sealing structure creates a high-pressure environment for the positioning cooperation to prevent liquid leakage from affecting the positioning stability. This design especially solves the problem of insufficient side wall cleaning force caused by poor sealing of the spraying system in the prior art. By rigid positioning, the shaking of the scraping part 5 is avoided, and by liquid path sealing, the directional flow of the cleaning liquid is guaranteed, so that the high-pressure liquid flow can fully act on the flushing and scraping process of the inner wall of the anode pipe 2. For the problem of acidic condensate adhesion under high humidity conditions, the sealing structure effectively prevents the leakage of corrosive liquid and protects the electrical components inside the frame 1; the positioning structure ensures that the scraping part 5 runs along the same trajectory each time it is cleaned, avoiding the scale residue caused by repeated positioning errors, improving the reliability of equipment operation and the consistency of cleaning effect from both mechanical cooperation and fluid control aspects, and reducing the need for manual calibration and maintenance costs.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An atmospheric particulate filtration device, characterized in that, include: A frame (1), the frame (1) having an upper chamber (11) and a lower chamber (12); the upper chamber (11) and the lower chamber (12) are connected via a plurality of anode pipes (2), a cathode wire (3) is provided through the anode pipes (2), and two ends of the cathode wire (3) are respectively fixed to the inner walls of the upper chamber (11) and the lower chamber (12); A lifting unit, the lifting unit being located in the upper chamber (11); A scraping member (5) is connected to the bottom of the lifting unit and can move up and down in the anode pipe (2) under the drive of the lifting unit. The scraping members (5) are provided in a plurality of numbers and are arranged in a one-to-one correspondence with the anode pipes (2). The outer peripheral wall of the scraping member (5) is slidably matched with the inner peripheral wall of the anode pipe (2) to scrape off attachments on the inner peripheral wall of the anode pipe (2).

2. An air particulate filtration device according to claim 1, wherein, The lifting unit comprises: A lifting plate (4), the lifting plate (4) is vertically slidably arranged in the upper chamber (11), the lifting plate (4) can move downward and fit into the upper end of the anode pipe (2); the lifting plate (4) is provided with a plurality of water injection ports (41), the plurality of water injection ports (41) are arranged in a one-to-one correspondence with the plurality of anode pipes (2), the water injection ports (41) are connected to an external high-pressure cleaning liquid source through a hose, and the frame (1) is provided with a driving member for driving the lifting plate (4) to move upward and downward; a hoist (6), the hoist (6) being arranged in the upper chamber (11), the hoist (6) having a rope connected to the scraper (5); The scraping member (5) can enter the anode pipe (2) under the downward movement of the lifting plate (4), and can continue to move downward under the pressure of the high-pressure cleaning liquid entering the water injection port (41) to scrape off attachments on the inner peripheral wall of the anode pipe (2); When the scraping member (5) finishes scraping the anode pipe (2), the hoist (6) can reel in the rope to drive the scraping member (5) to move upward and detach from the anode pipe (2).

3. The air particulate matter filtering device according to claim 2, characterized in that, A liquid distribution cavity (42) communicating with the water injection port (41) is provided in the lifting plate (4), and a plurality of liquid distribution holes (43) are provided through the bottom wall of the liquid distribution cavity (42), and the plurality of liquid distribution holes (43) are distributed along the circumference of the scraping member (5).

4. An atmospheric particulate filtering device according to claim 3, characterized in that, The scraping member (5) is provided with a through-spray hole (51), and the spray hole (51) is used for allowing the cleaning liquid to pass from top to bottom and spray onto the inner wall of the anode pipe (2).

5. An atmospheric particulate filtration device according to claim 4, characterized in that, The scraper (5) has an inner cavity (52) connected to the middle of the liquid spray hole (51), the liquid spray hole (51) includes a water inlet section located above the inner cavity (52) and a water outlet section located below the inner cavity (52), the upper opening of the water outlet section is arranged to pass through the peripheral wall of the inner cavity (52), and a baffle (7) capable of lifting and lowering is slidably connected in the inner cavity (52), and the outer peripheral wall of the baffle (7) is slidably matched with the inner peripheral wall of the inner cavity (52) and is sealed. An elastic member (8) is provided between the baffle (7) and the bottom wall of the inner cavity (52), and the elastic member (8) is used to elastically push the baffle (7) upward; when the pressure of the cleaning liquid above the baffle (7) is greater than the elastic pushing force of the elastic member (8), the baffle (7) can move downward to below the upper opening of the water outlet section, so that the water outlet section is communicated with the inner cavity (52).

6. An atmospheric particulate filtering device according to claim 4, characterized in that, A rotating ring (9) is rotatably connected to the bottom of the scraping member (5), and a plurality of fan blades (91) are provided on the outer peripheral wall of the rotating ring (9); the fan blades (91) can drive the rotating ring (9) to rotate under the impact of the cleaning liquid sprayed from the liquid spraying holes (51), so as to disperse the cleaning liquid to the inner wall of the anode pipe (2) by means of the fan blades (91).

7. An atmospheric particulate matter filtering device according to claim 6, characterized in that, There is an included angle between the water outlet direction of the liquid spraying holes (51) and the rotation axis of the rotating ring (9), so that the cleaning liquid sprayed from the liquid spraying holes (51) can impact the fan blades (91).

8. An atmospheric particulate filtration device according to claim 5, characterized in that, A positioning protrusion (44) is provided at the bottom of the lifting plate (4), and a positioning groove (53) is provided at the top of the scraping member (5). After the scraping member (5) is driven by the winch (6) to reset, the positioning protrusion (44) can be engaged with the positioning groove (53).

9. The air particulate filtering device according to claim 8, characterized in that, The water inlet section forms the positioning groove (53), the positioning protrusion (44) is a hollow structure and is vertically corresponding and communicated with the liquid distribution holes (43), and the positioning protrusion (44) and the positioning groove (53) are communicated with each other, so that the cleaning liquid enters the inner cavity (52) from the liquid distribution cavity (42).

10. An atmospheric particulate filtration device according to claim 2, characterized in that, A plurality of sealing ring grooves (45) are provided at the bottom of the lifting plate (4), and a sealing convex ring (21) is provided at the upper port of the anode pipe (2). After the lifting plate (4) approaches and seals the upper port of the anode pipe (2), the sealing convex ring (21) is engaged with the sealing ring grooves (45) to form a seal.

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