Filtering and backflushing cleaning device for fuel gas pipeline module

Abstract

The invention discloses a fuel gas pipeline module filtering and backflushing cleaning device, and relates to the technical field of separation and filtration, the fuel gas pipeline module filtering and backflushing cleaning device comprises a filter cartridge, a filter part is mounted in the filter cartridge, a baffle is mounted on the side wall of the filter part, and the two sides of the filter cartridge symmetrically communicate with an input pipeline and an output pipeline; a guide assembly is arranged at the position, corresponding to the output end of the input pipeline, in the filter cartridge, and filtrate is injected into the bottom of the filter cartridge; according to the filtering device, through the back-blowing impurity removal design, the reuse rate of the filtering element is increased, the equipment shutdown risk caused by failure of the filtering element is reduced, particle impurities and foreign matter in airflow can be effectively intercepted and filtered, the particle impurities and the foreign matter are prevented from being attached to the filtering element again in the blowing process, the cleaning effect of back-blowing is ensured, and meanwhile, the service life of the filtering device is prolonged. Due to the design that the filter element is close to the upper part, the device is very convenient to clean and replace the internal filter element.

Description

Technical Field

[0001] The present invention relates to the technical field of separation and filtration, and particularly to a filtering and backwashing cleaning device for a gas pipeline module. Background Art

[0002] The fuel module filtering device is a key equipment for purifying fuel gas. Its core function is to remove solid particles, droplets and other impurities contained in the fuel to ensure the safe and stable operation of downstream equipment. This device usually has a built-in filtering element, such as a coalescing filtering element made of non-metallic material or a metal wire mesh. The former intercepts tiny particles through the coalescing principle, and the latter relies on the mesh holes to intercept impurities.

[0003] However, the following defects still exist in the specific use of the existing technology: 1. Compared with the existing fuel module filtering device, in terms of structural design, to ensure efficient filtration and system tightness, the filter screen is usually installed in a compact manner inside a closed cavity, making it difficult for external high-pressure air to directly act on the filter screen. As a result, the purging and cleaning operation must be preceded by disassembling the device and removing the filter screen. From the perspective of the characteristics of the filtering element, due to the microscopic structure and adsorption mechanism of the non-metallic coalescing filtering element, its performance cannot be restored through physical purging after intercepting impurities. Although the metal filter screen can be reused, it is limited by the device structure and relies on manual disassembly and maintenance. In addition, considering the dangerous property of gas being flammable and explosive, after the device is started, to eliminate the risk of explosive mixture formed by residual gas, a strict replacement process needs to be carried out, further exacerbating the operational complexity.

[0004] These defects bring multi-dimensional negative effects to the fuel filtration system. In terms of operation and maintenance efficiency, the complex disassembly-purging-installation process significantly prolongs the equipment downtime, resulting in a long maintenance cycle and high frequency, seriously affecting the continuity and stability of the fuel supply system; in terms of economic cost, the disposable use or removal and cleaning of the filtering element will cause high costs; in the field of safety management, there is a risk of gas leakage during the device disassembly process, and a large amount of inert gas is also consumed in the replacement link. Not only is the operation cumbersome, but it is also difficult to completely avoid safety hazards such as explosion and fire, posing a potential threat to personnel safety and production operation.

[0005] 2. Compared with the existing filtration device, the internal air flow channel structure is fixed and cannot adjust the internal space according to the air flow direction. When the air flow is continuously transported and filtered, the air flow resistance is large, which easily causes pressure loss and affects the fuel transportation efficiency. At the same time, when the larger and heavier solid particles in the air flow directly impact the baffle at the input pipeline position, it will increase its load and the risk of blockage. Furthermore, it is impossible to ensure a smooth flow path for the air flow, making the transported air flow prone to form a turbulent flow inside. The large air flow resistance and the lack of pre-separation function not only reduce the fuel transportation efficiency, but also accelerate the blockage of the filter element, shorten its service life, increase the replacement frequency and maintenance cost. At the same time, the turbulent flow may also cause equipment vibration and noise, posing potential safety hazards and threatening the normal operation of the equipment and the safety of operators.

[0006] In view of this, the present invention proposes a filtering and backwashing cleaning device for a gas pipeline module to make up for and improve the deficiencies of the existing technology. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides a filtering and backwashing cleaning device for a gas pipeline module to solve the technical problems raised in the above background technology.

[0008] To achieve the above object, the technical solution adopted by the present invention is: a filtering and backwashing cleaning device for a gas pipeline module, including a filter cylinder, a filter element is installed inside the filter cylinder, and an input pipeline and an output pipeline are symmetrically communicated on both sides of the filter cylinder.

[0009] A baffle is installed on the side wall of the filter element, and the baffle divides the internal cavity of the filter cylinder into an n-shaped gas path channel. The input pipelines and output pipelines at the left and right positions respectively correspond to the lower sides of the two sides of the n-shaped channel inside the filter cylinder.

[0010] Filter liquid is injected at the bottom of the filter cylinder, and a guiding component for guiding the input air flow to the filter liquid is arranged at the position corresponding to the output end of the input pipeline inside the filter cylinder. The filter element is assembled above the filter liquid.

[0011] This device has a working state and a backwashing state. In the working state, air enters from the input pipeline, and the air flow is blown onto the filter liquid through the guiding component, so that the impurities in the gas enter the filter liquid. The gas passes through the filter element from bottom to top in the left gas path channel, and then turns and is output from the output pipeline through the left gas path channel; in the backwashing state, the air flow passes through the filter element from top to bottom in the reverse direction, and the impurities in the filter element are blown into the lower filter liquid in the reverse direction.

[0012] Further, a detachable cover plate is hermetically assembled on the upper part of the filter cartridge; the filter element includes a horizontal upper mounting plate, in which more than two mounting holes are machined, and independent detachable cylindrical filter units are assembled in the mounting holes. The air inlet from the input pipeline enters the inner layer of the filter unit through the outer layer of the filter unit, and then blows out of the filter element upward along the channel in the center of the filter unit. The filter unit can be drawn out from the upper part of the mounting plate.

[0013] Further, a horizontal lower plate is assembled on the lower part of the upper mounting plate, the filter unit is assembled between the upper mounting plate and the lower plate, and an air vent passage is left between the lower plate and the inner wall of the filter cartridge or the side wall of the baffle.

[0014] Further, the filter element is composed of a plurality of electrostatic plates combined. When the air flow passes through the filter element from bottom to top, the electrostatic plates of the filter element are electrified to adsorb and filter the impurities in the air flow; a filter assembly is arranged inside the input pipeline, and the input pipeline cooperates with the filter assembly to change the flow direction of the air flow. After primary filtering of the air flow, the air flow flows inside the filter element from top to bottom, so as to automatically clean the filter element without disassembly. A pulse assembly is arranged at the end position of the filter assembly. The filter assembly cooperates with the pulse assembly to provide a pulsed impact force for the air flow flowing from top to bottom, thereby improving the efficiency of automatic cleaning of the air flow.

[0015] Further, the guiding assembly includes a swing plate installed inside the filter cartridge. The upper end of the swing plate is rotatably connected to a connecting shaft. Coil springs are symmetrically sleeved at both ends of the connecting shaft. The swing plate is rotatably connected to the filter cartridge through the connecting shaft. The swing plate can be flipped along the connecting shaft according to the flow direction of the air flow, so that the swing plate changes synchronously with the change of the air flow direction to increase the space for air flow.

[0016] Further, an acute angle is formed between the two hypotenuses of the swing plate, and both ends of the coil spring are fixedly connected to the swing plate and the connecting shaft respectively.

[0017] Further, a floating assembly is arranged outside the filter element. The floating assembly includes a connecting frame sleeved outside the filter element. The filter element is slidably connected to the filter cartridge through the connecting frame. The two sides of the connecting frame are symmetrically and slidably connected with limit cylinders, and the limit cylinders are respectively fixedly connected to the filter cartridge and the baffle. Rigid springs are installed inside the limit cylinders, and both ends of the rigid springs are fixedly connected to the connecting frame and the limit cylinders respectively.

[0018] Further, a flat plate is installed above the filter element. The flat plate is slidably connected to the filter cylinder. Symmetrically fixed to the lower surface of the flat plate are flexible springs, and the ends of the flexible springs away from the flat plate are fixedly connected to the inner wall of the filter cylinder.

[0019] Further, through grooves are formed through the surface of the flat plate at positions corresponding to the filter element, and a number of cylindrical balls are evenly and fixedly connected to the lower surface of the flat plate at positions corresponding to the filter element.

[0020] Further, the filtering assembly includes a steering pipe communicating with the inside of the input pipe. Control valves are installed inside both the input pipe and the output pipe. The steering pipe is located at the front side part of the valve inside the input pipe, and a steering valve is installed inside the steering pipe near one end of the input pipe.

[0021] Further, a splicing cylinder is movably connected inside the steering pipe, and a filtering buckle is movably connected inside the splicing cylinder. The filtering buckle as a whole includes a funnel filter shell in the lower half and a circular filter plate in the upper half.

[0022] Further, the pulse assembly includes a stepping motor installed above the filter cylinder. A threaded shaft is fixedly connected to the outer wall of the output shaft of the stepping motor. A threaded sleeve plate is threadedly connected to the outer wall of the threaded shaft. A communicating pipe is installed outside the threaded sleeve plate, and a one-way valve is installed inside the communicating pipe.

[0023] Further, a ball screw structure is formed between the threaded shaft and the threaded sleeve plate. The threaded sleeve plate is slidably connected to the communicating pipe. In the initial state, the threaded sleeve plate is located at the uppermost part inside the communicating pipe, and the one-way valve is in a closed state. The communicating pipe is kept in communication with the steering pipe.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) When cleaning impurities from the filter cylinder in the prior art, it is necessary to open the filter cylinder body, remove the multiple filter meshes inside, and blow them one by one. This method is not only complex and time-consuming in operation, but also easily leads to seal failure, component wear, and even safety hazards due to frequent disassembly. However, in this device, a steering pipe is introduced, and reverse blowing can be achieved without disassembling the filter cylinder body, greatly simplifying the maintenance process, reducing the manual operation difficulty and time cost. The reverse blowing operation can effectively remove the impurities adsorbed by the filtering element, reduce the blockage of the filtering element, not only extend the service life of the filter mesh, but also improve the reuse rate of the filtering element, and reduce the risk of equipment shutdown caused by the failure of the filtering element. The design of the filtered liquid at the lower part of the filter cylinder enables the lower part of the filter cylinder to form a closed structure. When discharging the filtered liquid after cleaning, the seal of the air flow channel above the filtered liquid is maintained, so that it is not necessary to perform a shutdown operation, improving the utilization rate of the equipment and reducing the use cost of the equipment.

[0025] Furthermore, the N-shaped air passage design enables the air passage to turn in the upper part, which can reduce the flow velocity of the air flow, making it easier for dust to be filtered in the filter element. At the same time, the filter element is set at a higher position, making it more convenient for the filter element to approach the cover plate, facilitating subsequent disassembly and replacement, and also making it more convenient to add an auxiliary structure for backwashing.

[0026] (2) Inside the turning pipe, the combination of a funnel filter housing and a circular filter plate is introduced, forming a primary filtration barrier for the reverse-flow cleaning air flow, which can effectively intercept and filter particulate impurities and foreign objects in the air flow, preventing these impurities from adhering to the filter element again during the purging process, ensuring the cleaning effect of reverse purging. At the same time, the filter buckle is installed in the turning pipe through an assembly cylinder, and this detachable design makes the cleaning and replacement of the filter buckle very convenient.

[0027] (3) Particularly importantly, a pulse assembly is introduced at the position of the turning pipe near the upper part of the filter cylinder. The threaded sleeve plate is driven by a stepper motor to generate a regular reciprocating linear motion. Combined with the opening and closing control of the one-way valve, the air flow forms a pulsed impact. This pulsed energy can effectively break through the adhesion force of impurities on the surface of the filter element. Especially for stubborn particles deeply embedded in the pores of the filter element, the instantaneous high pressure of the pulse can produce a "vibration effect", making the impurities easier to fall off, significantly improving the cleaning efficiency of reverse purging.

[0028] The pulsed air flow forms a periodic pressure fluctuation inside the filter element, prompting the air flow to penetrate each area of the filter element more evenly. This dynamic pressure change can avoid the air flow short-circuit phenomenon that may occur during continuous purging, ensuring that every part of the filter element can be fully cleaned, especially having a significant effect on large filter elements or filter media with complex structures.

[0029] (4) For the filter element, it is still ensured to be an independent unit, but it is integrally movably connected to the inside of the filter cylinder. When the air flow flows from bottom to top, the limiting cylinder ensures that the filter element maintains a fixed position and stably completes the gas filtration work, ensuring the stability and continuity of the filtration process. When the air flow reversely flows from top to bottom, the filter element can slide downward under the push of the air flow. At the same time, the rigid spring between the connecting frame and the limiting cylinder, combined with the periodic impact of the pulsed air flow, makes the filter element generate continuous vibration. This vibration can effectively break the adhesion force between the impurities and the filter element. Especially for those stubborn impurities that are caked on the surface and pores of the filter element due to long-term accumulation, the vibration can loosen them and discharge them with the air flow.

[0030] Compared with the filter element of the traditional fixed structure, this design significantly improves the cleaning efficiency of reverse purging, greatly reduces the frequency of manual cleaning, lowers the maintenance cost, and during the vibration process, the filter element continuously self-cleans, effectively extending its service life and ensuring the long-term efficient operation of the filtration system.

[0031] Among them, a flat plate is introduced above the filter element of this device to further strengthen the coordination between the cleaning effect and the structure. The through slots opened on the flat plate ensure the smooth passage of air flow. Under the impact of pulsed air flow, the cylindrical balls on its lower surface, in cooperation with the buffering and rebound of the flexible springs, cause the flat plate to continuously shake downward and directly contact and vibrate with the filter element. This contact vibration can transmit the energy of the pulsed air flow to the surface of the filter element, forming local high-frequency vibration. At the same time, the contact vibration between the flat plate and the filter element can assist in dispersing the impact force of the pulsed air flow and prevent the filter element from being damaged due to the strong impact in a single direction.

[0032] (5) During the forward air flow filtration stage, relying on inertia, the swing plate effectively separates the larger and heavier solid particles in the air flow, causing them to fall into the filter liquid below, completing the preliminary filtration in advance. At the same time, under the push of the air flow, the swing plate flips in the direction away from the input pipeline, thereby expanding the area with the output of the input pipeline, effectively reducing the resistance when the air flow enters, and avoiding pressure loss and energy consumption caused by air flow congestion.

[0033] And during the reverse air flow cleaning stage, the swing plate can respond flexibly. Under the impact of the air flow from top to bottom, it flips in the direction close to the input pipeline. It not only provides a more spacious and smooth flow space for the reverse air flow, accelerating the cleaning efficiency, but also can closely fit the pipe orifice, precisely restricting the air flow direction and preventing air turbulence.

[0034] Among them, the two hypotenuses of the swing plate are designed to be acute angles. During forward filtration, the acute-angle edges can more effectively guide the dispersion of the air flow, making it easier for solid particles to change their movement trajectories after impact and fall into the filter liquid, improving the success rate of impurity separation; during reverse cleaning, the acute-angle design helps the swing plate to flip more quickly and smoothly, reducing the air resistance during the flipping process; when the swing plate fits the pipe orifice, the acute-angle edges can better fit the orifice contour of the pipe, forming a tight sealing effect. Description of the Drawings

[0035] Figure 1 It is a schematic cross-sectional structure diagram of Embodiment 1 of the present invention.

[0036] Figure 2 It is a schematic top-view structure diagram of the filter element of Embodiment 1 of the present invention assembled in the filter cylinder.

[0037] Figure 3Schematic diagram of the three-dimensional structure of each component inside the filter cartridge in Embodiment 2 of the present invention.

[0038] Figure 4 Schematic diagram of the three-dimensional structure of the guiding component in Embodiment 2 of the present invention.

[0039] Figure 5 Schematic diagram corresponding to the positional relationship between the flat plate and the filter element in Embodiment 2 of the present invention.

[0040] Figure 6 Schematic diagram of the three-dimensional structure of the filter component and the pulse component in Embodiment 2 of the present invention.

[0041] Figure 7 For the present invention Figure 6 Partial enlarged three-dimensional structure schematic diagram at position A in the present invention.

[0042] Figure 8 Schematic diagram of the three-dimensional structure inside the assembly cylinder in Embodiment 2 of the present invention.

[0043] Figure 9 Schematic diagram of the air flow filtering and flowing direction in Embodiment 2 of the present invention.

[0044] Figure 10 Schematic diagram of the states of each component during air flow filtering and processing in Embodiment 2 of the present invention.

[0045] Figure 11 Schematic diagram of the air flow direction for cleaning the filter element in Embodiment 2 of the present invention.

[0046] Figure 12 Schematic diagram of the states of each component during cleaning of the filter element in Embodiment 2 of the present invention.

[0047] The reference numerals in the figure are: 01, upper assembly plate; 02, filter unit; 03, lower plate.

[0048] 1, filter cartridge; 11, filter element; 12, baffle; 13, input pipe; 14, output pipe.

[0049] 21, guiding component; 211, swing plate; 212, connecting shaft; 213, torsion spring.

[0050] 31, floating component; 311, connecting frame; 312, limiting cylinder; 313, rigid spring; 314, flat plate; 315, flexible spring.

[0051] 41, filter component; 411, steering pipe; 412, steering valve; 413, assembly cylinder; 414, filter buckle.

[0052] 51, pulse component; 511, stepper motor; 512, threaded shaft; 513, threaded sleeve plate; 514, communicating pipe; 515, check valve. Detailed implementation manners

[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0054] It should be noted that the structures and working principles of the above-mentioned components such as the filter cartridge 1, the filter element 11, the baffle 12, the input pipeline 13, and the output pipeline 14 belong to the prior art and will not be elaborated here. In addition, the following orientation descriptions (left, right, up, down, etc.) are all based on Figure 1 and Figure 9 the position description.

[0055] Embodiment 1: As shown in Figure 1 and Figure 2 , a filter backwashing and cleaning device for a gas pipeline module includes a filter cartridge 1. A filter element 11 is installed inside the filter cartridge 1. Input pipelines 13 and output pipelines 14 are symmetrically communicated on both sides of the filter cartridge 1. In this embodiment, a vertical baffle 12 is installed on the side wall of the filter element 11. The baffle 12 divides the inner cavity of the filter cartridge 1 into an n-shaped gas path channel, that is, two vertical channels are formed inside the baffle 12 of the filter cartridge 1 and are communicated at the upper part. The input pipelines 13 and output pipelines 14 at the left and right positions respectively correspond to the lower sides of both sides of the n-shaped channel inside the filter cartridge 1.

[0056] Filter liquid is injected at the bottom of the filter cartridge 1. The filter liquid can be water, which has a lower cost. A water outlet pipeline for discharging the filtered waste water can be designed at the bottom of the filter cartridge 1. A guiding component 21 is arranged at the position corresponding to the output end of the input pipeline 13 inside the filter cartridge 1. The guiding component 21 can guide the input air flow to the filter liquid. In this way, when the air flow containing impurities passes through the filter liquid, the solid impurities will be thrown into the filter liquid, thereby completing the preliminary filtration. The filter element 11 is assembled above the filter liquid.

[0057] This device is mainly used to filter and remove impurities in the air flow. In this embodiment, it is mainly used to remove impurities in combustible gas. The device has a working state and a backwash state. In the working state, air enters through the input pipe 13, and the air flow blows onto the filtering liquid through the guiding component 21, causing the impurities in the gas to enter the filtering liquid to complete preliminary impurity removal. Then the gas passes through the filtering element 11 from bottom to top in the left air passage, and then turns and is output from the output pipe 14 through the left air passage; in the backwash state, the air flow passes through the filtering element 11 reversely from top to bottom. Since the filtering element 11 is assembled above the filtering liquid, the backwash air flow can blow the impurities in the filtering element 11 reversely into the lower filtering liquid. The realization of the backwash air flow can directly connect the air flow to the output pipe 14 and open the input pipe 13, so as to form a reverse air flow in the filter cartridge 1, Figure 1 so as to blow the dust of the filtering element 11 into the lower filtering liquid.

[0058] In the specific design, as Figure 1 shown, a detachable cover plate is hermetically assembled on the upper part of the filter cartridge 1 of this embodiment; the filtering element 11 includes a horizontal upper assembly plate 01, two or more mounting holes are machined in the upper assembly plate, and independent detachable cylindrical filtering units 02 are assembled in the mounting holes. The filtering unit 02 generally adopts a multi-layer mesh structure, and the filter mesh holes gradually decrease from the outer layer to the inner layer. A communicating air outlet is designed on the upper part of the filtering unit 02; when filtering, it is similar to the principle of a cylindrical filter. The air flow enters the vertical hole in the middle of the filtering unit 02 through the outer cylindrical wall of the filtering unit 02, and then blows out upward from the vertical hole in the middle, so as to complete the second filtering process of the dust in the air flow. Finally, the air flow is blown out through the output pipe 14 on the right side. This design makes the filtering surface of the filtering element 11 the annular wall surface of each filtering unit 02, and its filtering area is much larger than that of the traditional multi-layer filtering structure, and its filtering efficiency is higher. Although this backwash design makes the filtering unit 02 not need to be disassembled and cleaned and has a higher service life. However, when the filtering unit 02 is backwashed each time, some impurities will remain. In this way, after multiple backwashes, the filtering efficiency of the filtering unit 02 is greatly reduced, and at this time, the filtering unit 02 still needs to be replaced. At this time, the independent detachable cylindrical filtering unit 02 corresponds to the cover plate on the upper part of the filter cartridge 1. By lifting the cover plate, the filtering unit 02 can be conveniently replaced.

[0059] In the specific design, as Figure 1 and Figure 2As shown, the intake air from the input pipeline 13 enters the inner layer of the filter unit 02 through the outer layer of the filter unit 02, and then blows out the filter element 11 upward along the channel at the center of the filter unit 02. The filter unit 02 can be drawn out from the upper part of the assembly plate 01. A horizontal lower plate 03 is assembled at the lower part of the upper assembly plate 01. The filter unit 02 is assembled between the upper assembly plate 01 and the lower plate 03. An air vent passage is left between the lower plate 03 and the inner wall of the filter cylinder 1 or the side wall of the baffle 12.

[0060] Embodiment 2: Please refer to Figures 3 - 12 As shown, a filtering and backwashing cleaning device for a gas pipeline module has the same main structure and working principle as the device in Embodiment 1. It also includes a filter cylinder 1. A filter element 11 is installed inside the filter cylinder 1. A baffle 12 is installed on the side wall of the filter element 11. Input pipelines 13 and output pipelines 14 are symmetrically connected to both sides of the filter cylinder 1. A guiding component 21 is arranged at the position corresponding to the output end of the input pipeline 13 inside the filter cylinder 1. Filter liquid is injected at the bottom of the filter cylinder 1. When the air flow enters the inside of the filter cylinder 1 through the input pipeline 13, it will first impact the guiding component 21, so that the heavy and large solid particles in the air flow fall into the filter liquid at the bottom of the filter cylinder 1. In this embodiment, the filter element 11 is composed of a plurality of electrostatic plates combined. When the electrostatic plates are performing the filtering work, they are charged with voltage, so that when the air flow flows upward through the filter element 11 from bottom to top, the electrostatic plates of the filter element 11 can adsorb the impurities in the air flow, thereby realizing filtration. When performing the backwashing operation, a reverse voltage is connected to the electrostatic plates, so that the adsorbed dust has the same voltage as the electrostatic plates. After mutual repulsion, the dust can easily break away from the electrostatic plates. At this time, when the air flow is blown back, the dust can be blown off from the filter element 11.

[0061] In the specific design, a filtering component 41 is arranged inside the input pipeline 13. The input pipeline 13 cooperates with the filtering component 41 to change the flow direction of the air flow and perform primary filtration on the air flow, so that the air flow flows inside the filter element 11 from top to bottom, and then the filter element 11 is automatically cleaned in a non-detachable manner. A pulse component 51 is arranged at the end position of the filtering component 41. The filtering component 41 cooperates with the pulse component 51 to provide a pulsed impact force for the air flow flowing from top to bottom, thereby improving the efficiency of the automatic cleaning of the air flow.

[0062] Please refer to Figures 3 - 12As shown in the figure, it should be noted that the guiding component 21 includes a swing plate 211 installed inside the filter cartridge 1. The upper end of the swing plate 211 is rotatably connected to a connecting shaft 212. Coil springs 213 are symmetrically sleeved at both ends of the connecting shaft 212. The swing plate 211 is rotatably connected to the filter cartridge 1 through the connecting shaft 212. The swing plate 211 can be flipped along the connecting shaft 212 according to the flow direction of the air flow, so that the swing plate 211 changes synchronously with the change of the air flow direction to increase the space for the air flow to flow. The two hypotenuses of the swing plate 211 form an acute angle. Both ends of the coil spring 213 are fixedly connected to the swing plate 211 and the connecting shaft 212 respectively.

[0063] Specifically, as Figure 9 shown, the position marked by the arrow in the figure is the flow path when the air flow is flowing forward for filtration treatment. On this basis, refer to Figure 10 shown. This figure specifically shows the position states of the components in the floating component 31 during the forward flow of the air flow. The specific process is as follows: When the air flow enters the inside of the filter cartridge 1 from the input pipe 13, it first contacts the swing plate 211 in the guiding component 21. With its unique acute-angled hypotenuse design and rotational connection structure, the swing plate 211 quickly responds under the impact of the air flow. Specifically, under the impact force of the air flow, the swing plate 211 overcomes the initial pre-tightening force of the coil spring 213 and flips away from the input pipe 13 with the connecting shaft 212 as the axis, expanding the corresponding area output by the input pipe 13, effectively reducing the resistance when the air flow enters. At the same time, using the principle of inertia, the larger and heavier solid particles in the air flow change their movement trajectories after hitting the swing plate 211 and fall into the filtering liquid at the bottom of the filter cartridge 1 to complete the preliminary impurity separation.

[0064] The preliminarily filtered air flow continues to flow upward. At this time, the floating component 31 starts to play a role. The filter element 11 is slidably connected to the filter cartridge 1 through an external connecting frame 311 and remains in a fixed position under the restraint of the limiting cylinder 312, providing a stable supporting force for the filter element 11 to ensure that it does not displace during the forward air flow filtration process, so that the air flow can stably pass through the filter element 11 for deep filtration. When the air flow passes through the filter element 11, impurities are intercepted and adsorbed, and the cleaned air flow continues to rise, passes through the channel formed by the baffle 12 and the inner wall of the filter cartridge 1, and finally flows into the output pipe 14 and out of the device. During the entire forward filtration process, the flat plate 314 also plays an auxiliary role. The flat plate 314 is connected to the inner wall of the filter cartridge 1 through a flexible spring 315 and maintains a relatively stable position under the action of the air flow. The through grooves opened on its surface ensure that the air flow can pass smoothly.

[0065] Please refer to Figures 3 - 12As shown in the figure, it should be noted that a floating component 31 is provided outside the filter element 11. The floating component 31 includes a connecting frame 311 sleeved outside the filter element 11. The filter element 11 and the filter cylinder 1 are slidably connected through the connecting frame 311. Limiting cylinders 312 are symmetrically and slidably connected to both sides of the connecting frame 311. The limiting cylinders 312 are fixedly connected to the filter cylinder 1 and the baffle 12 respectively. Rigid springs 313 are installed inside the limiting cylinders 312. Both ends of the rigid springs 313 are fixedly connected to the connecting frame 311 and the limiting cylinders 312 respectively. A flat plate 314 is installed above the filter element 11. The flat plate 314 is slidably connected to the filter cylinder 1. Flexible springs 315 are symmetrically and fixedly connected to the lower surface of the flat plate 314. One end of the flexible spring 315 away from the flat plate 314 is fixedly connected to the inner wall of the filter cylinder 1. Through grooves are formed through the surface of the flat plate 314 corresponding to the position of the filter element 11, and a number of cylindrical balls are evenly and fixedly connected to the lower surface of the flat plate 314 corresponding to the position of the filter element 11.

[0066] It should be noted that the filter assembly 41 includes a steering pipe 411 communicated with the inside of the input pipe 13. Control valves are installed inside both the input pipe 13 and the output pipe 14. The steering pipe 411 is located at the front side of the valve inside the input pipe 13, and a steering valve 412 is installed inside the steering pipe 411 near one end of the input pipe 13. An assembling cylinder 413 is movably connected inside the steering pipe 411. A filter buckle 414 is movably connected inside the assembling cylinder 413. The filter buckle 414 as a whole includes a funnel filter shell in the lower half and a circular filter plate in the upper half. The pulse assembly 51 includes a stepping motor 511 installed above the filter cylinder 1. A threaded shaft 512 is fixedly connected to the outer wall of the output shaft of the stepping motor 511. A threaded sleeve plate 513 is threadedly connected to the outer wall of the threaded shaft 512. A communicating pipe 514 is installed outside the threaded sleeve plate 513. A one-way valve 515 is installed inside the communicating pipe 514. A ball screw structure is formed between the threaded shaft 512 and the threaded sleeve plate 513. The threaded sleeve plate 513 is slidably connected to the communicating pipe 514. In the initial state, the threaded sleeve plate 513 is located at the uppermost position inside the communicating pipe 514, and the one-way valve 515 is in a closed state. The communicating pipe 514 is kept in communication with the steering pipe 411.

[0067] Specifically, as Figure 11 shown, the positions marked by the arrow in the figure are the flow paths when the air flow reversely flows to clean the filter element 11. On this basis, refer to Figure 12As shown, this figure specifically shows the position states of the components in the floating component 31 during the reverse flow of the air current. The specific process is as follows: When it is necessary to clean the filter element 11, the staff closes the control valves in the input pipeline 13 and the output pipeline 14, and opens the steering valve 412 in the steering pipeline 411. Then, the air current path of the entire device changes, and the reverse cleaning process is officially started. At this time, the air current passing through the input pipeline 13 will flow into the steering pipeline 411. In the steering pipeline 411, the lower half funnel filter shell of the filter buckle 414 takes the lead in playing a role. Its inclined inner wall surface can effectively guide the large particle impurities in the air current to move towards the pipeline wall surface, and using the inertia principle, these impurities will slide off after colliding with the inner wall of the filter shell. The upper half ring filter plate, relying on its fine filter mesh structure, further intercepts the fine particles remaining in the air current. The two cooperate to complete the preliminary purification of the air current entering the steering pipeline 411, preventing the impurities from causing secondary pollution to the filter element 11 during the reverse cleaning process. Among them, the filter buckle 414 is installed in the steering pipeline 411 through the assembly cylinder 413. This detachable design not only facilitates the quick replacement when the filter buckle 414 is blocked, but also can replace the filter buckle 414 with different filtration precisions according to different impurity characteristics, improving the adaptability of the device.

[0068] While the air current impacts the filter element 11, the pulse component 51 starts synchronously and plays a key role. The stepping motor 511 starts to operate according to the preset program, and its output shaft drives the threaded shaft 512 to rotate at a constant speed. The ball screw structure formed between the threaded shaft 512 and the threaded sleeve plate 513. When the threaded shaft 512 rotates, the threaded sleeve plate 513 makes regular reciprocating linear movements in the connecting pipe 514 driven by the balls. In the initial state, the threaded sleeve plate 513 is located at the uppermost part inside the connecting pipe 514, and at this time, the one-way valve 515 is in the closed state. When the threaded sleeve plate 513 moves downward, the gas in the connecting pipe 514 is gradually compressed. As the gas pressure continuously increases, when the pressure exceeds the opening threshold of the one-way valve 515, the one-way valve 515 is pushed open, and the high-pressure gas is instantaneously released, forming a strong pulsed air current impact; when the threaded sleeve plate 513 moves upward, the pressure in the connecting pipe 514 decreases, and the one-way valve 515 quickly closes to prevent gas from flowing back, ensuring the independence and stability of each pulse. By adjusting the rotation speed and rotation angle of the stepping motor 511, the reciprocating motion frequency and stroke of the threaded sleeve plate 513 can be accurately controlled, and then the intensity and frequency of the pulsed air current can be adjusted to meet the cleaning requirements of the filter element 11 with different degrees of blockage.

[0069] Under the dual action of the reverse air flow and the pulsed impact, the coordinated movement among the components of the floating assembly 31 further enhances the cleaning effect. Specifically, under the downward air flow drive, the external connection frame 311 of the filter element 11 slides downward along the limiting cylinder 312. The limiting cylinder 312 provides accurate sliding guidance for the connection frame 311, ensuring that the filter element 11 does not shift or shake during the movement. During the downward sliding of the filter element 11, the rigid spring 313 inside the limiting cylinder 312 is gradually stretched. The rigid spring 313 has a high elastic coefficient and can store a large amount of elastic potential energy when stretched. When the pulsed air flow impacts the filter element 11, the elastic potential energy stored in the rigid spring 313 will be released at this time, generating a reverse pulling force on the filter element 11, enabling the filter element 11 to quickly rebound after the air flow impact force disappears. The interaction between this impact force and the spring elastic force causes the filter element 11 to generate high-frequency vibrations, which can effectively break the adhesion between the impurities and the filter element 11. Especially for those stubborn impurities that have accumulated for a long time and are caked on the surface and pores of the filter element 11, the high-frequency vibrations loosen them and make them break away from the filter element 11.

[0070] Meanwhile, under the action of the flexible spring 315, the flat plate 314 forms a linkage with the filter element 11. The flat plate 314 ensures the smooth passage of the air flow through the through slots opened on its surface, avoiding hindering the flow of the air flow. When the pulsed air flow impacts the flat plate 314, the flat plate 314 sways downward under the action of the air flow pressure, overcoming the elastic force of the flexible spring 315. Compared with the rigid spring 313, the flexible spring 315 has a lower elastic coefficient and a larger deformation ability, and can generate obvious displacement under a smaller external force. The cylindrical balls uniformly fixed on the lower surface of the flat plate 314 contact the surface of the filter element 11 during the downward swaying process, directly transmitting the energy of the pulsed air flow to the surface of the filter element 11, forming local high-frequency vibrations. This contact vibration can not only further enhance the vibration effect of the filter element 11 but also assist in dispersing the impact force of the pulsed air flow, avoiding structural damage to the filter element 11 due to a strong impact in a single direction. After the impact force of the pulsed air flow weakens, the elastic potential energy of the flexible spring 315 is released, causing the flat plate 314 to quickly reset, preparing for the next pulsed impact. During the entire reverse cleaning process, the components of the floating assembly 31 ensure that the filter element 11 can quickly restore its filtering performance and extend its service life through dynamic interaction with the pulsed air flow.

[0071] Secondly, the air flow passing through the filter element 11 continues to flow downward and forms a top-down impact on the swing plate 211. Under the impact force of the reverse air flow, the swing plate 211 overcomes the initial pre-tightening force of the coil spring 213 and its own rotational friction force. The coil spring 213 is in a certain compressed and curled state when the swing plate 211 is in its initial state, providing elastic potential energy for its reset. When the air flow impact force is greater than the resistance of the coil spring 213, the swing plate 211 rotates quickly towards the direction close to the input pipe 13 with the connecting shaft 212 as the axis. During the rotation process, the air flow can change direction more smoothly after contacting the plate surface, avoiding the formation of turbulence. As the swing plate 211 gradually fits the pipe orifice, not only does it expand the space for the air flow to flow downward, but also through the tightly fitting edge, it accurately restricts the air flow direction, preventing the gas from diffusing everywhere in the pipe to form a turbulent flow, thereby ensuring that the air flow can concentrate and efficiently impact the filter element 11 below.

[0072] Finally, when the top-down recoil air flow flows to the bottom of the filter cylinder 1, as Figure 11 shown, the air flow will be discharged outward from the exhaust pipe position below the input pipe 13.

[0073] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filtering and backwashing cleaning device for a gas pipeline module, comprising a filtering cylinder (1), wherein a filtering element (11) is installed inside the filtering cylinder (1), and an input pipeline (13) and an output pipeline (14) are symmetrically communicated with both sides of the filtering cylinder (1), and the features are as follows: The side wall of the filter element (11) is provided with a baffle (12), and the baffle (12) divides the internal cavity of the filter cartridge (1) into an n-shaped air passage. The input pipe (13) and the output pipe (14) at the left and right positions correspond to the lower two sides of the n-shaped passage inside the filter cartridge (1). Filtered liquid is injected into the bottom of the filter cartridge (1), and a guide component (21) for guiding the input airflow to the filtered liquid is provided at a position inside the filter cartridge (1) corresponding to the output end of the input pipe (13). The filter element (11) ) is assembled on the upper part of the filtered liquid; the device has a working state and a backflushing state. In the working state, air is taken in from the input pipe (13), and the air flow is blown onto the filtered liquid through the guide component (21), so that impurities in the gas enter the filtered liquid, and the gas passes through the filter element (11) from bottom to top in the left air path, and then turns to be output from the output pipe (14) through the left air path; in the backflushing state, the air flow passes through the filter element (11) in the reverse direction from top to bottom, and the impurities in the filter element (11) are blown back into the filtered liquid at the bottom.

2. The filtering and backwashing cleaning device for a gas pipeline module according to claim 1, characterized in that: The upper portion of the filter cartridge (1) is sealed and equipped with a detachable cover plate; the filter element (11) includes a horizontal upper assembly plate (01), wherein two or more mounting holes are machined in the upper assembly plate, wherein an independent detachable cylindrical filter unit (02) is assembled in the mounting hole, and the air intake from the input pipe (13) enters the inner layer of the filter unit through the outer layer of the filter unit (02), and then blows out the filter element (11) upward along the channel in the center of the filter unit (02), and the filter unit (02) can be pulled out from the upper portion of the assembly plate (01).

3. The filtering and backwashing cleaning device for a gas pipeline module according to claim 2, characterized in that: A horizontal lower plate (03) is mounted at the lower portion of the upper assembly plate (01), the filter unit (02) is mounted between the upper assembly plate (01) and the lower plate (03), and a ventilation channel is left between the lower plate (03) and the inner wall of the filter cartridge (1) or the side wall of the baffle (12).

4. A filtering and backwashing cleaning device for a gas pipeline module according to claim 1, characterized in that: The filter element (11) is composed of a plurality of electrostatic plates. When the air flows from bottom to top through the filter element (11), the electrostatic plates of the filter element (11) are energized to adsorb and filter impurities in the air flow. A filter assembly (41) is provided inside the input pipe (13). The input pipe (13) cooperates with the filter assembly (41) to change the flow direction of the air flow and, after primary filtration of the air flow, allows the air flow to flow from top to bottom inside the filter element (11), thereby automatically cleaning the filter element (11) without disassembly. A pulse assembly (51) is provided at the end of the filter assembly (41). The filter assembly (41) cooperates with the pulse assembly (51) to provide a pulse-like impact force for the air flow flowing from top to bottom.

5. The filtering and backwashing cleaning device for a gas pipeline module according to claim 1, characterized in that: The guiding component (21) includes a swing plate (211) installed inside the filter cartridge (1). The upper end of the swing plate (211) is rotatably connected to a connecting shaft (212). Coil springs (213) are symmetrically sleeved at both ends of the connecting shaft (212). The swing plate (211) is rotatably connected to the filter cartridge (1) through the connecting shaft (212). The swing plate (211) can be flipped along the connecting shaft (212) according to the flow direction of the air flow, so that the swing plate (211) changes synchronously with the change of the air flow direction to increase the space for the air flow to flow.

6. A filtering and backwashing cleaning device for a gas pipeline module according to claim 1, characterized in that: A floating component (31) is arranged outside the filter element (11). The floating component (31) includes a connecting frame (311) sleeved outside the filter element (11). The filter element (11) is slidably connected to the filter cartridge (1) through the connecting frame (311). Limiting cylinders (312) are symmetrically and slidably connected to both sides of the connecting frame (311). The limiting cylinders (312) are fixedly connected to the filter cartridge (1) and the baffle (12) respectively. Rigid springs (313) are installed inside the limiting cylinders (312). Both ends of the rigid springs (313) are fixedly connected to the connecting frame (311) and the limiting cylinders (312) respectively.

7. A filtering and backwashing cleaning device for a gas pipeline module according to claim 1, characterized in that: A flat plate (314) is installed above the filter element (11). The flat plate (314) is slidably connected to the filter cartridge (1). Flexible springs (315) are symmetrically and fixedly connected to the lower surface of the flat plate (314). The ends of the flexible springs (315) far from the flat plate (314) are fixedly connected to the inner wall of the filter cartridge (1).

8. A filtering and backwashing cleaning device for a gas pipeline module according to claim 1, characterized in that: The filtering component (41) includes a steering pipe (411) communicated with the inside of the input pipe (13). Control valves are installed inside both the input pipe (13) and the output pipe (14). The steering pipe (411) is located at the front side of the valve inside the input pipe (13), and a steering valve (412) is installed inside the steering pipe (411) near one end of the input pipe (13).

9. The filtering and backwashing cleaning device for a gas pipeline module according to claim 8, wherein: An assembling cylinder (413) is movably connected inside the steering pipe (411). A filtering buckle (414) is movably connected inside the assembling cylinder (413). The filtering buckle (414) as a whole includes a funnel-shaped filter shell in the lower half and a circular filter plate in the upper half.

10. The filtering and backwashing cleaning device for a gas pipeline module according to claim 1, characterized in that: The pulse component (51) includes a stepping motor (511) installed above the filter cartridge (1). The outer wall of the output shaft of the stepping motor (511) is fixedly connected with a threaded shaft (512). The outer wall of the threaded shaft (512) is threadedly connected with a threaded sleeve plate (513). A connecting pipe (514) is installed outside the threaded sleeve plate (513). A one-way valve (515) is installed inside the connecting pipe (514). A ball screw structure is formed between the threaded shaft (512) and the threaded sleeve plate (513). The threaded sleeve plate (513) is slidably connected with the connecting pipe (514). In the initial state, the threaded sleeve plate (513) is located at the uppermost part inside the connecting pipe (514), and the one-way valve (515) is in a closed state. The connecting pipe (514) is kept in communication with the steering pipe (411).

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