A gas pipeline module filter backwash cleaning device

Abstract

The present invention discloses a gas pipeline module filter backflushing cleaning device, which relates to the field of separation filtration technology, including a filter cartridge, a filter element is installed inside the filter cartridge, a baffle is installed on the side wall of the filter element, an input pipe and an output pipe are symmetrically connected on both sides of the filter cartridge, a guide component is provided at a position inside the filter cartridge corresponding to the output end of the input pipe, and filtered liquid is injected into the bottom of the filter cartridge; the filter device in the present invention improves the reuse rate of the filter element through the backflushing impurity removal design, reduces the risk of equipment shutdown due to failure of the filter element, and can effectively intercept and filter particulate impurities and foreign matter in the airflow to avoid re-attachment to the filter element during the purge process, thereby ensuring the cleaning effect of the reverse purge. At the same time, the upper design of the filter element makes it very convenient for the device 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 in particular to a gas pipeline module filtering and backwashing cleaning device. Background Art

[0002] The fuel module filter is a key device for purifying fuel gas. Its core function is to remove solid particles, liquid droplets, and other impurities contained in the fuel, ensuring the safe and stable operation of downstream equipment. This device typically incorporates a filter element, such as a non-metallic coalescing filter element or a wire mesh. The former traps tiny particles through coalescence, while the latter relies on mesh to intercept impurities.

[0003] However, the existing technology still has the following defects when used in practice: 1. Compared with the existing fuel module filter device, in terms of structural design, in order to ensure efficient filtration and system sealing, the filter is usually installed compactly inside the closed cavity, which makes it difficult for external high-pressure air to directly act on the filter, and the purging and cleaning operation must be based on disassembling the device and removing the filter. From the perspective of filter element characteristics, non-metallic condensing filter elements cannot achieve performance recovery through physical purging after impurities are trapped due to the material microstructure and adsorption mechanism. Although the metal filter is reusable, it is limited by the device structure and relies on manual disassembly and maintenance. In addition, in view of the dangerous properties of flammable and explosive gas, after the device is turned on, in order to eliminate the risk of explosive mixed gas formed by residual gas, the replacement process must be strictly implemented, which further increases the complexity of the operation.

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

[0005] 2. Compared with the existing filtering device, the internal air flow channel structure is fixed, and the internal space cannot be adjusted according to the direction of the air flow, resulting in a large air flow resistance when the air flow is continuously transported and filtered, which is prone to pressure loss and affects the fuel delivery efficiency. At the same time, when larger and heavier solid particles in the air flow directly impact the baffle at the input pipe position, it will increase its load and blockage risk, and thus cannot ensure a smooth flow path for the air flow, making it easy for the transported air flow to form turbulence inside. The large air flow resistance and lack of pre-separation function not only reduce the fuel delivery efficiency, but also accelerate the blockage of the filter element, shorten its service life, increase the replacement frequency and maintenance cost, and at the same time, turbulence 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 gas pipeline module filter backwash cleaning device to remedy and improve the shortcomings of the prior art. Summary of the Invention

[0007] In order to solve the above technical problems, the present invention provides a gas pipeline module filter backwash cleaning device to solve the technical problems raised in the above background technology.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is: a gas pipeline module filter backwash cleaning device, including a filter cartridge, a filter element is installed inside the filter cartridge, and the two sides of the filter cartridge are symmetrically connected with an input pipe and an output pipe.

[0009] The side wall of the filter element is provided with a baffle which divides the inner cavity of the filter cartridge into an n-shaped air passage. The left and right input pipes and output pipes correspond to the lower two sides of the n-shaped passage inside the filter cartridge.

[0010] The bottom of the filter cartridge is injected with filtered liquid. A guide component for guiding the input airflow to the filtered liquid is provided at a position inside the filter cartridge corresponding to the output end of the input pipe. The filter element is assembled on the upper part of the filtered liquid.

[0011] The device has a working state and a backflushing state. In the working state, air is taken in from the input pipe, and the airflow is blown onto the filtered liquid through the guide component, so that impurities in the gas enter the filtered liquid. The gas passes through the filter element from bottom to top in the left air path channel, and then turns to be output from the output pipe through the left air path channel; in the backflushing state, the airflow passes through the filter element in the reverse direction from top to bottom, and the impurities in the filter element are blown back into the filtered liquid at the bottom.

[0012] Furthermore, the upper part of the filter cartridge is sealed and assembled with a removable cover plate; the filter element includes a horizontal upper assembly plate, in which more than two mounting holes are processed, and an independent and removable cylindrical filter unit is assembled in the mounting hole. The air intake from the input pipe enters the inner layer of the filter unit through the outer layer of the filter unit, and then blows out the filter element upward along the channel in the center of the filter unit. The filter unit can be pulled out from the upper part of the assembly plate.

[0013] Furthermore, a horizontal lower plate is assembled at the lower part of the upper assembly plate, the filter unit is assembled between the upper assembly plate and the lower plate, and a ventilation channel is left between the lower plate and the inner wall of the filter cartridge or the side wall of the baffle.

[0014] Furthermore, the filter element is composed of a plurality of electrostatic plates. When the airflow flows from bottom to top through the filter element, the electrostatic plates of the filter element are energized to adsorb and filter impurities in the airflow. A filter assembly is provided inside the input pipe. The input pipe cooperates with the filter assembly to change the flow direction of the airflow, and after primary filtration of the airflow, the airflow is made to flow from top to bottom inside the filter element, thereby automatically cleaning the filter element without disassembly. A pulse assembly is provided at the end position of the filter assembly. The filter assembly cooperates with the pulse assembly to provide a pulse-like impact force for the airflow flowing from top to bottom, thereby improving the efficiency of automatic cleaning of the airflow.

[0015] Furthermore, the guide assembly includes a swinging plate installed inside the filter cartridge, the upper end of the swinging plate is rotatably connected to a connecting shaft, and the two ends of the connecting shaft are symmetrically sleeved with coil springs. The swinging plate is rotatably connected to the filter cartridge through the connecting shaft, and the swinging plate can be flipped along the connecting shaft according to the flow direction of the airflow, so that the swinging plate changes synchronously with the change of the flow direction of the airflow to increase the space for airflow flow.

[0016] Furthermore, the two oblique sides of the swing plate form an acute angle, and the two ends of the coil spring are fixedly connected to the swing plate and the connecting shaft respectively.

[0017] Furthermore, a floating assembly is provided on the outside of the filter element, and the floating assembly includes a connecting frame that is sleeved on the outside of the filter element. The filter element and the filter cylinder are slidingly connected through the connecting frame. The two sides of the connecting frame are symmetrically slidably connected with limiting cylinders, and the limiting cylinders are fixedly connected to the filter cylinder and the baffle respectively. A rigid spring is installed inside the limiting cylinder, and the two ends of the rigid spring are fixedly connected to the connecting frame and the limiting cylinder respectively.

[0018] Furthermore, a flat plate is installed above the filter element, the flat plate is slidably connected to the filter cartridge, a flexible spring is symmetrically fixedly connected to the lower surface of the flat plate, and one end of the flexible spring away from the flat plate is fixedly connected to the inner wall of the filter cartridge.

[0019] Furthermore, a through groove is formed on the surface of the plane plate at a position corresponding to the filter element, and a plurality of cylindrical balls are evenly and fixedly connected to the lower surface of the plane plate at a position corresponding to the filter element.

[0020] Furthermore, the filter assembly includes a steering pipe connected to the inside of the input pipe, and control valves are installed inside the input pipe and the output pipe. The steering pipe is located in front 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] Furthermore, the interior of the steering pipe is movably connected to an assembling cylinder, and the interior of the assembling cylinder is movably connected to a filter buckle, and the filter buckle as a whole includes a funnel filter shell in the lower half and a circular filter plate in the upper half.

[0022] Furthermore, the pulse assembly includes a stepper motor installed above the filter cartridge, the outer wall of the stepper motor output shaft is fixedly connected to a threaded shaft, the outer wall of the threaded shaft is threadedly connected to a threaded sleeve, a connecting pipe is installed on the outside of the threaded sleeve, and a one-way valve is installed inside the connecting pipe.

[0023] Furthermore, a ball screw structure is formed between the threaded shaft and the threaded sleeve, and the threaded sleeve is slidingly connected to the connecting pipe. In the initial state, the threaded sleeve is located at the top inside the connecting pipe, and the one-way valve is in a closed state, and the connecting pipe remains connected to the steering pipe.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) Compared with the prior art, when cleaning impurities from the filter cartridge, it is necessary to open the filter cartridge body, remove the multiple filter screens inside, and blow them one by one. This method is not only complicated and time-consuming to operate, but also prone to seal failure, component wear, and even safety hazards due to frequent disassembly. The present device introduces a steering pipe, which can achieve reverse blowing without disassembling the filter cartridge body, greatly simplifying the maintenance process, reducing the difficulty and time cost of manual operation, and the reverse blowing can effectively remove impurities adsorbed by the filter element and reduce filter element clogging. It not only extends the service life of the filter screen, but also increases the reuse rate of the filter element and reduces the risk of equipment downtime due to filter element failure. The filtrate design at the bottom of the filter cartridge allows the bottom of the filter cartridge to form a closed structure. When the filtrate is discharged after cleaning, the air flow channel at the top of the filtrate is kept sealed, so that there is no need for downtime operation, which improves the utilization rate of the equipment and reduces the cost of equipment use.

[0025] Furthermore, the N-shaped air path design allows the air path to rotate at the upper part, which can reduce the flow rate of the air flow and make it easier for dust to be filtered in the filter element. At the same time, the filter element is set in the upper position, so that the filter element can be more conveniently close to the cover plate, which is convenient for subsequent disassembly and replacement, and also more convenient for adding a backflushing auxiliary structure.

[0026] (2) A combination of a funnel filter housing and an annular filter plate is introduced inside the steering duct, forming a primary filtration barrier for the reverse flow cleaning airflow. It can effectively intercept and filter particulate impurities and foreign matter in the airflow, preventing these impurities from adhering to the filter element again during the purge process, thereby ensuring the cleaning effect of the reverse purge. At the same time, the filter buckle is installed in the steering duct through an assembly tube. This detachable design makes the cleaning and replacement of the filter buckle very convenient.

[0027] (3) What is particularly important is that this device introduces a pulse component at a position above the steering duct near the filter cartridge, and drives the threaded sleeve plate to produce regular reciprocating linear motion through a stepper motor. Combined with the opening and closing control of the one-way valve, the airflow forms a pulse impact. This pulse energy can effectively break through the adhesion 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 it easier for impurities to fall off, significantly improving the cleaning efficiency of the reverse purge.

[0028] The pulsed airflow creates periodic pressure fluctuations inside the filter element, causing the airflow to penetrate all areas of the filter element more evenly. This dynamic pressure change can avoid the airflow short-circuiting phenomenon that may occur during continuous purge, ensuring that every part of the filter element can be fully cleaned. This is especially effective for large filter elements or filter media with complex structures.

[0029] (4) The filter element is still guaranteed to be an independent unit, but it is connected to the inside of the filter cylinder in an integral and movable manner. When the airflow flows from bottom to top, the limiting cylinder ensures that the filter element remains in a fixed position, stably completing the gas filtration work and ensuring the stability and continuity of the filtration process. When the airflow flows in the opposite direction from top to bottom, the filter element can slide downward under the push of the airflow. At the same time, the rigid spring connecting the frame and the limiting cylinder, combined with the periodic impact of the pulsed airflow, causes the filter element to vibrate continuously. This vibration can effectively destroy the adhesion between impurities and the filter element, especially for those stubborn impurities that have been hardened on the surface and pores of the filter element due to long-term accumulation. The vibration can loosen them and discharge them with the airflow.

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

[0031] This device incorporates a flat plate above the filter element, further enhancing the cleaning effect and structural synergy. Slots in the plate ensure smooth airflow, while cylindrical balls on its lower surface, impacted by pulsed airflow and buffered by flexible springs, cause the plate to continuously oscillate downward, vibrating in direct contact with the filter element. This contact vibration transfers the energy of the pulsed airflow to the filter element surface, generating localized high-frequency vibrations. Furthermore, the contact vibration between the plate and the filter element helps disperse the impact of the pulsed airflow, preventing damage to the filter element from strong impacts in a single direction.

[0032] (5) In the forward airflow filtration stage, the swing plate effectively separates the larger and heavier solid particles in the airflow by virtue of inertia, causing them to fall into the filtrate below, completing the initial filtration in advance. At the same time, the swing plate is pushed by the airflow to flip in the direction away from the input pipe, thereby expanding the area with the input pipe output, effectively reducing the resistance when the airflow enters, and avoiding pressure loss and energy consumption caused by airflow congestion.

[0033] During the reverse airflow cleaning stage, the swing plate can respond flexibly and flip towards the direction close to the input pipe under the impact of the airflow from top to bottom. It not only provides a more spacious and smooth flow space for the reverse airflow, accelerating the cleaning efficiency, but also fits tightly to the pipe mouth, accurately constrains the airflow direction, and prevents gas turbulence.

[0034] Among them, the two oblique sides of the swing plate are designed to be acute-angled. During forward filtration, the acute-angled edges can more effectively guide the airflow dispersion, allowing solid particles to more easily change their motion trajectory after impact and fall into the filtrate, thereby improving the success rate of impurity separation; during reverse cleaning, the acute-angled 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 mouth, the acute-angled edge can better fit the pipe mouth contour, forming a tight sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0036] Figure 2 This is a schematic diagram of the structure of the filter element assembled in the filter cartridge in a top view according to Example 1 of the present invention.

[0037] Figure 3This is a schematic diagram of the three-dimensional structure of the internal components of the filter cartridge of Example 2 of the present invention.

[0038] Figure 4 This is a schematic diagram of the three-dimensional structure of the guide assembly of Example 2 of the present invention.

[0039] Figure 5 This is a schematic diagram of the positional relationship between the flat plate and the filter element in Example 2 of the present invention.

[0040] Figure 6 This is a schematic diagram of the three-dimensional structure of the filter component and the pulse component in Example 2 of the present invention.

[0041] Figure 7 For the present invention Figure 6 A schematic diagram of the partially enlarged three-dimensional structure at point A in the middle.

[0042] Figure 8 This is a schematic diagram of the internal three-dimensional structure of the assembly cylinder according to Example 2 of the present invention.

[0043] Figure 9 This is a schematic diagram of the air flow direction of the filtration in Example 2 of the present invention.

[0044] Figure 10 This is a schematic diagram of the status of various components during airflow filtration processing in Example 2 of the present invention.

[0045] Figure 11 This is a flow direction diagram of the airflow cleaning process of the filter element according to embodiment 2 of the present invention.

[0046] Figure 12 This is a schematic diagram of the status of various components when cleaning the filter element in Example 2 of the present invention.

[0047] The numbers 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. Guide assembly; 211. Swing plate; 212. Connecting shaft; 213. Coil spring.

[0050] 31. Floating assembly; 311. Connecting frame; 312. Limiting cylinder; 313. Rigid spring; 314. Flat plate; 315. Flexible spring.

[0051] 41. Filter assembly; 411. Steering pipe; 412. Steering valve; 413. Assembly cylinder; 414. Filter buckle.

[0052] 51. Pulse assembly; 511. Stepper motor; 512. Threaded shaft; 513. Threaded sleeve; 514. Connecting pipe; 515. One-way valve. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0054] It should be noted that the structure and working principle of the filter cartridge 1, filter element 11, baffle 12, input pipe 13 and output pipe 14 are related to the prior art and will not be described in detail here. Figure 1 and Figure 9 A description of the location.

[0055] Example 1: Figure 1 and Figure 2 As shown, a gas pipeline module filter backwash cleaning device includes a filter cartridge 1, wherein a filter element 11 is installed inside the filter cartridge 1. An input pipe 13 and an output pipe 14 are symmetrically connected on both sides of the filter cartridge 1. In this embodiment, a vertical baffle 12 is installed on the sidewall of the filter element 11. The baffle 12 divides the internal cavity of the filter cartridge 1 into an n-shaped gas path. In other words, two vertical channels are formed inside the baffle 12 of the filter cartridge 1, and the channels are connected at the top. The left and right input pipes 13 and output pipes 14 correspond to the lower sides of the n-shaped channel inside the filter cartridge 1.

[0056] The bottom of the filter cartridge 1 is filled with filtered liquid, which can be water for lower costs. An outlet pipe for the filtered wastewater can be designed at the bottom of the filter cartridge 1. A guide assembly 21 is provided inside the filter cartridge 1 at a location corresponding to the output end of the input pipe 13. This guide assembly 21 guides the input airflow toward the filtered liquid. When the airflow containing impurities passes through the filtered liquid, the solid impurities are ejected into the filtered liquid, completing the initial filtration. The filter element 11 is assembled above the filtered 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 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 the impurities in the gas enter the filtered liquid, completing the preliminary impurity removal. Then 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 backwash state, the air flow passes through the filter element 11 in the reverse direction from top to bottom. Since the filter element 11 is assembled on the upper part of the filtered liquid, the backwash air flow can blow the impurities in the filter element 11 back into the filtered liquid at the lower part. The realization of the backwash air flow can directly connect the output pipe 14 to the air flow, and open the input pipe 13, so that a gas flow is formed in the filter cartridge 1. Figure 1 The reverse airflow in the filter element 11 is blown into the filtered liquid at the bottom.

[0058] In the specific design, such as Figure 1 As shown, the upper portion of the filter cartridge 1 in this embodiment is sealed with a removable cover. The filter element 11 comprises a horizontal upper mounting plate 01 with two or more mounting holes machined therein. These mounting holes house independently removable cylindrical filter units 02. These filter units 02 typically utilize a multi-layer mesh structure, with the mesh size gradually decreasing from the outer layer to the inner layer. The upper portion of each filter unit 02 is designed with interconnected air outlets. During filtration, similar to the principles of a cylindrical filter, air flows through the cylindrical outer wall of the filter unit 02 into the vertical hole in the center of the unit, where it is then blown upward through the vertical hole, completing a secondary filtration process for dust in the airflow. The airflow is finally discharged through the right-hand output duct 14. This design ensures that the filtering surface of the filter element 11 corresponds to the annular wall of each filter unit 02, resulting in a significantly larger filtration area than conventional multi-layer filter structures, resulting in higher filtration efficiency. This backflushing design also extends the service life of the filter units 02 without requiring disassembly for cleaning. However, each time the filter unit 02 is backflushed, some impurities will remain. As a result, the filtration efficiency of the filter unit 02 is greatly reduced after multiple backflushings, and the filter unit 02 still needs to be replaced. In this case, the independently detachable cylindrical filter unit 02 corresponds to the cover plate on the top of the filter cartridge 1. By opening the cover plate, the filter unit 02 can be easily replaced.

[0059] In the specific design, such as Figure 1 and Figure 2As shown, the air entering from the input pipe 13 passes through the outer layer of the filter unit 02 and enters the inner layer of the filter unit. It is then blown upward along the channel in the center of the filter unit 02 and out of the filter element 11. The filter unit 02 can be withdrawn from the upper portion of the assembly plate 01. The lower portion of the upper assembly plate 01 is assembled with a horizontal lower plate 03. The filter unit 02 is assembled between the upper assembly plate 01 and the lower plate 03. 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.

[0060] Example 2: Please refer to Figure 3-Figure 12 The device, shown in Figure 1, is a gas pipeline module filter backwash cleaning device. Its main structure and operating principle are the same as those of the device in Example 1. It also includes a filter cartridge 1, with a filter element 11 installed inside. Baffles 12 are installed on the sidewalls of the filter element 11. An input pipe 13 and an output pipe 14 are symmetrically connected on both sides of the filter cartridge 1. A guide assembly 21 is provided inside the filter cartridge 1 at a position corresponding to the output end of the input pipe 13. Filtered liquid is injected into the bottom of the filter cartridge 1. When airflow enters the filter cartridge 1 through the input pipe 13, it first strikes the guide assembly 21, causing heavy and large solid particles in the airflow to fall into the filtered liquid at the bottom of the filter cartridge 1. In this embodiment, the filter element 11 is composed of a plurality of electrostatic plates. When the electrostatic plates are performing filtering work, voltage is carried on them, so that when the airflow flows from bottom to top through the filter element 11, the electrostatic plates of the filter element 11 can adsorb impurities in the airflow, thereby achieving filtration. When a backflushing operation is performed, 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 be easily separated from the electrostatic plates. At this time, the airflow is backflushed to blow the dust away from the filter element 11.

[0061] In the specific design, 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 airflow. After primary filtration of the airflow, the airflow is made 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 position of the filter assembly 41. The filter assembly 41 cooperates with the pulse assembly 51 to provide a pulse-like impact force for the airflow flowing from top to bottom, thereby improving the efficiency of automatic cleaning of the airflow.

[0062] Please refer to Figure 3-Figure 12As shown, it should be noted that the guide assembly 21 includes a swinging plate 211 installed inside the filter cartridge 1, and the upper end of the swinging plate 211 is rotatably connected to the connecting shaft 212, and the two ends of the connecting shaft 212 are symmetrically sleeved with coil springs 213. The swinging plate 211 is rotatably connected to the filter cartridge 1 through the connecting shaft 212. The swinging plate 211 can be flipped along the connecting shaft 212 according to the flow direction of the airflow, so that the swinging plate 211 changes synchronously with the change of the flow direction of the airflow to increase the space for airflow flow. The two oblique sides of the swinging plate 211 form an acute angle, and the two ends of the coil spring 213 are fixedly connected to the swinging plate 211 and the connecting shaft 212 respectively.

[0063] Specifically, such as Figure 9 As shown in the figure, the arrow mark position is the flow path when the air flow is flowing forward for filtering treatment. Figure 10 As shown, this figure specifically shows the position status of each component in the floating assembly 31 during the forward flow of the airflow. The specific process is as follows: When the airflow enters the interior of the filter cartridge 1 from the input pipe 13, it first contacts the swing plate 211 in the guide assembly 21. The swing plate 211 responds quickly to the impact of the airflow due to its unique acute-angle bevel design and rotating connection structure. Specifically, under the impact of the airflow, the swing plate 211 overcomes the initial pre-tightening force of the coil spring 213 and flips in the direction away from the input pipe 13 with the connecting shaft 212 as the axis, thereby expanding the corresponding area with the output of the input pipe 13 and effectively reducing the resistance of the airflow when entering. At the same time, by utilizing the principle of inertia, the larger and heavier solid particles in the airflow change their motion trajectory after hitting the swing plate 211 and fall into the filtrate at the bottom of the filter cartridge 1, completing the initial impurity separation.

[0064] The airflow that has undergone preliminary filtration continues to flow upward, and at this time the floating assembly 31 begins to function. The filter element 11 forms a sliding connection with the filter cartridge 1 through the external connecting frame 311, and maintains a fixed position under the constraint of the limiting cylinder 312, providing a stable support force for the filter element 11, ensuring that it will not be displaced during the forward airflow filtration process, so that the airflow can stably pass through the filter element 11 for deep filtration. When the airflow passes through the filter element 11, impurities are intercepted and adsorbed, and the cleaned airflow 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.

[0065] 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 airflow. The through grooves on its surface ensure that the airflow can pass smoothly.

[0066] Please refer to Figure 3-Figure 12As shown, it should be noted that a floating assembly 31 is provided on the outside of the filter element 11. The floating assembly 31 includes a connecting frame 311 that is sleeved on the outside of the filter element 11. The filter element 11 and the filter cartridge 1 are slidably connected through the connecting frame 311. The two sides of the connecting frame 311 are symmetrically slidably connected to the limiting cylinder 312. The limiting cylinder 312 is fixedly connected to the filter cartridge 1 and the baffle 12 respectively. Rigid springs 313 are installed inside the limiting cylinder 312. The two ends of the rigid spring 313 are respectively connected to the connecting frame 311 and the limiting cylinder 312 are fixedly connected, a flat plate 314 is installed above the filter element 11, the flat plate 314 is slidably connected to the filter cartridge 1, and a flexible spring 315 is symmetrically 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 cartridge 1. A through groove is provided on the surface of the flat plate 314 at the position corresponding to the filter element 11, and a number of cylindrical balls are evenly fixedly connected to the lower surface of the flat plate 314 at the position corresponding to the filter element 11.

[0067] It should be noted that the filter assembly 41 includes a steering pipe 411 connected to the inside of the input pipe 13, and control valves are installed inside the input pipe 13 and the output pipe 14. The steering pipe 411 is located in front 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. The steering pipe 411 is movably connected to the assembly cylinder 413, and the assembly cylinder 413 is movably connected to the filter buckle 414. The filter buckle 414 as a whole includes a funnel filter shell in the lower half and a ring filter plate in the upper half. The pulse assembly 51 includes a filter shell installed on the filter cartridge. 1, a stepper motor 511 is mounted above the stepper motor 511. A threaded shaft 512 is fixedly connected to the outer wall of the output shaft of the stepper motor 511. A threaded sleeve 513 is threadedly connected to the outer wall of the threaded shaft 512. A connecting pipe 514 is installed on the outside of the threaded sleeve 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 513. The threaded sleeve 513 and the connecting pipe 514 are in sliding connection. In the initial state, the threaded sleeve 513 is located at the top of the connecting pipe 514, and the one-way valve 515 is in a closed state. The connecting pipe 514 maintains communication with the steering pipe 411.

[0068] Specifically, such as Figure 11 As shown in the figure, the arrow mark position is the flow path when the airflow flows in the reverse direction to clean the filter element 11. Figure 12As shown, this figure specifically shows the position status of each component in the floating assembly 31 during the reverse flow of the airflow. The specific process is as follows: When the filter element 11 needs to be cleaned, the staff closes the control valves in the input pipe 13 and the output pipe 14, and opens the steering valve 412 in the steering pipe 411. The airflow path of the entire device is changed, and the reverse cleaning process is officially started. At this time, the airflow through the input pipe 13 will flow into the steering pipe 411. In the steering pipe 411, the funnel filter housing of the lower half of the filter buckle 414 takes the lead in playing a role, and its inclined inner wall surface can effectively guide large particles in the airflow. The impurities move toward the pipe wall, and the inertia principle is used to make these impurities collide with the inner wall of the filter housing and then slide down. The annular filter plate in the upper part further intercepts the fine particles remaining in the airflow with its fine filter mesh structure. The two cooperate to complete the initial purification of the airflow entering the steering pipe 411, preventing 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 pipe 411 through the assembly tube 413. This detachable design is not only convenient for quick replacement of the filter buckle 414 after it is blocked, but also can replace the filter buckle 414 with different filtration precision according to different impurity characteristics, thereby improving the adaptability of the device.

[0069] When the airflow hits the filter element 11, the pulse assembly 51 starts synchronously and plays a key role. The stepper motor 511 starts to operate according to the preset program, and its output shaft drives the threaded shaft 512 to rotate at a uniform speed. The ball screw structure formed between the threaded shaft 512 and the threaded sleeve 513, when the threaded shaft 512 rotates, the threaded sleeve 513 is driven by the ball to make regular reciprocating linear movements in the connecting pipe 514. In the initial state, the threaded sleeve 513 is located at the top of the connecting pipe 514. At this time, the one-way valve 515 is in a closed state. When the threaded sleeve 513 moves downward, the connecting pipe 51 is gradually compressed. 4, as the gas pressure continues to rise, 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 released instantly, forming a strong pulsed airflow impact; and when the threaded sleeve 513 moves upward, the pressure in the connecting pipe 514 decreases, and the one-way valve 515 closes quickly to prevent gas backflow, ensuring the independence and stability of each pulse. By adjusting the speed and rotation angle of the stepping motor 511, the reciprocating frequency and stroke of the threaded sleeve 513 can be accurately controlled, and then the intensity and frequency of the pulsed airflow can be adjusted to meet the cleaning needs of the filter element 11 with different blockage degrees.

[0070] Under the dual effects of reverse airflow and pulse impact, the coordinated movement between the various components of the floating assembly 31 further enhances the cleaning effect. Specifically, under the push of the airflow from top to bottom, the external connecting frame 311 of the filter element 11 slides downward along the limiting cylinder 312. The limiting cylinder 312 provides a precise sliding guide for the connecting frame 311 to ensure that the filter element 11 will not deviate or shake during the movement. During the 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 It can store a large amount of elastic potential energy when stretched. When the pulse airflow hits 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, so that the filter element 11 can rebound quickly after the airflow impact force disappears. The interaction between this impact force and the spring elastic force causes the filter element 11 to generate high-frequency vibration, which can effectively destroy the adhesion between impurities and the filter element 11, especially for those stubborn impurities that have accumulated for a long time and hardened on the surface and pores of the filter element 11. The high-frequency vibration causes them to loosen and detach from the filter element 11.

[0071] At the same time, the flat plate 314 is linked to the filter element 11 under the action of the flexible spring 315. The flat plate 314 ensures that the airflow can pass smoothly through the grooves opened on the surface to avoid obstruction to the flow of airflow. When the pulse airflow hits the flat plate 314, the flat plate 314 overcomes the elastic force of the flexible spring 315 under the action of the airflow pressure and swings downward. Compared with the rigid spring 313, the flexible spring 315 has a lower elastic coefficient and a larger deformation capacity, and can produce obvious displacement under the action of a smaller external force. The cylindrical balls evenly fixed on the lower surface of the flat plate 314 are in contact with the surface of the filter element 11 during the downward swinging process. Contact, the energy of the pulse airflow is directly transferred to the surface of the filter element 11, forming local high-frequency vibration. This contact vibration can not only further enhance the vibration effect of the filter element 11, but also help disperse the impact force of the pulse airflow, and avoid the filter element 11 from being damaged by strong impact in a single direction. After the impact force of the pulse airflow is weakened, the elastic potential energy of the flexible spring 315 is released, so that the flat plate 314 is quickly reset to prepare for the next pulse impact. During the entire reverse cleaning process, the various 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 pulse airflow.

[0072] Secondly, the airflow passing through the filter element 11 continues to flow downward and impacts the swing plate 211 from top to bottom. Under the impact force of the reverse airflow, the swing plate 211 overcomes the initial preload of the coil spring 213 and its own rotational friction. The coil spring 213 is in a certain compressed curled state in the initial state of the swing plate 211, providing it with elastic potential energy for restoration. When the impact force of the airflow is greater than the resistance of the coil spring 213, the swing plate 211 quickly flips in the direction close to the input pipe 13 with the connecting shaft 212 as the axis. During the flipping process, the airflow can change direction more smoothly after contacting the plate surface to avoid turbulence. As the swing plate 211 gradually fits the pipe mouth, it not only expands the space for the airflow to flow downward, but also accurately constrains the airflow direction through the tightly fitting edge, preventing the gas from diffusing around in the pipe to form turbulence, thereby ensuring that the airflow can be concentrated and efficiently impact the filter element 11 below.

[0073] Finally, when the backwash airflow from top to bottom flows to the bottom of the filter cartridge 1, Figure 11 As shown, the air flow is discharged outward from the exhaust pipe position below the input pipe 13.

[0074] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A gas pipeline module filter backwash cleaning device, comprising a filter cartridge (1), a filter element (11) installed inside the filter cartridge (1), an input pipe (13) and an output pipe (14) symmetrically connected on both sides of the filter cartridge (1), characterized in that: A baffle (12) is installed on the side wall of the filter element (11), and the baffle (12) divides the internal cavity of the filter cartridge (1) into an n-shaped air passage, and the left and right input pipes (13) and output pipes (14) correspond to the lower two sides of the n-shaped passage inside the filter cartridge (1); The bottom of the filter cartridge (1) is injected with filtered liquid, 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), and 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 assembly (21), so that impurities in the gas enter the filtered liquid. The gas passes through the filter element (11) from bottom to top in the left gas path, and then turns to be output from the output pipe (14) through the left gas 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. A floating assembly (31) is provided on the outside of the filter element (11), and the floating assembly (31) includes a connecting frame (311) sleeved on the outside of the filter element (11). The filter element (11) and the filter cartridge (1) are slidably connected via the connecting frame (311). The two sides of the connecting frame (311) are symmetrically slidably connected to limit cylinders (312). The limit cylinders (312) are fixedly connected to the filter cartridge (1) and the baffle (12), respectively. Rigid springs (313) are installed inside the limit cylinders (312), and the two ends of the rigid springs (313) are fixedly connected to the connecting frame (311) and the limit cylinder (312), respectively. A flat plate (314) is installed above the filter element (11), the flat plate (314) being slidably connected to the filter cartridge (1), a flexible spring (315) being symmetrically fixedly connected to the lower surface of the flat plate (314), and one end of the flexible spring (315) away from the flat plate (314) being fixedly connected to the inner wall of the filter cartridge (1).

2. A gas pipeline module filter backwash cleaning device 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. A gas pipeline module filter backwash cleaning device 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 gas pipeline module filter backwash cleaning device 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 absorb 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 airflow, and after primary filtration of the airflow, the airflow is made 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 airflow flowing from top to bottom.

5. The gas pipeline module filter backwash cleaning device according to claim 1, characterized in that: The guide assembly (21) comprises a swing plate (211) mounted 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) via the connecting shaft (212); the swing plate (211) can be flipped along the connecting shaft (212) according to the flow direction of the airflow, so that the swing plate (211) changes synchronously with the change in the flow direction of the airflow, thereby increasing the space for the airflow to flow.

6. A gas pipeline module filter backwash cleaning device according to claim 4, characterized in that: The filter assembly (41) includes a steering pipe (411) connected to the interior of the input pipe (13), and control valves are installed inside the input pipe (13) and the output pipe (14). The steering pipe (411) is located in front 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).

7. A gas pipeline module filter backwash cleaning device according to claim 6, characterized in that: The interior of the steering pipe (411) is movably connected to an assembling cylinder (413), and the interior of the assembling cylinder (413) is movably connected to a filter buckle (414). The filter buckle (414) as a whole comprises a funnel filter shell in the lower half and a circular filter plate in the upper half.

8. The gas pipeline module filter backwash cleaning device according to claim 4, characterized in that: The pulse assembly (51) comprises a stepper motor (511) mounted above the filter cartridge (1); a threaded shaft (512) is fixedly connected to the outer wall of the output shaft of the stepper motor (511); a threaded sleeve (513) is threadedly connected to the outer wall of the threaded shaft (512); a connecting pipe (514) is mounted on the outside of the threaded sleeve (513); and a one-way valve (515) is mounted on the inside of the connecting pipe (514); a ball screw structure is formed between the threaded shaft (512) and the threaded sleeve (513); the threaded sleeve (513) and the connecting pipe (514) are in sliding connection; in an initial state, the threaded sleeve (513) is located at the top inside the connecting pipe (514), the one-way valve (515) is in a closed state, and the connecting pipe (514) remains in communication with the steering pipe (411).

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