Filter for natural gas

Abstract

The invention relates to the technical field of natural gas filtration, in particular to a natural gas filter which comprises a mounting plate and a filter bin, a spiral guide plate is arranged in the filter bin, a collecting cavity is formed in the position, under the spiral guide plate, in the filter bin, and a filter plate is arranged in the filter bin. A filtering unit for intercepting the spiral guide plate and the collecting cavity is arranged in the filtering bin and is used for guiding the natural gas to form a rotating flow field through the spiral guide plate when the natural gas flows through the filtering bin, and when the filter for the natural gas is used, a multi-stage and active separation mechanism and an integrated safety maintenance function are designed to be introduced; the filtering problem of complex multi-phase impurities in bottled natural gas is solved, the core is that a traditional passive interception thought is abandoned, firstly, a natural gas flow field is forced to rotate through a built-in spiral flow guide structure, and efficient and active separation of liquid heavy hydrocarbon and water mist is achieved through centrifugal force.

Description

Technical Field

[0001] This invention relates to the field of natural gas filtration technology, specifically to a natural gas filter. Background Technology

[0002] Natural gas, as a highly efficient and clean fossil energy source, primarily functions to convert chemical energy into heat and kinetic energy through combustion, providing essential cooking, heating, hot water supply, and power for residential life, commercial activities, and industrial production. However, throughout the entire industrial chain of natural gas extraction, processing, transportation, storage, and distribution, various impurities are inevitably introduced: rock fragments, silt, and formation water accompanying extraction; hydrogen sulfide, heavy hydrocarbons, and water vapor not completely removed during processing; and metal oxides (such as rust), welding slag, and sealing material debris generated by corrosion during long-distance pipeline transportation. The presence of these impurities poses multiple serious hazards to the natural gas system, disrupting the stability of natural gas components, leading to decreased combustion efficiency, unstable flames, increased harmful emissions, and ultimately causing significant safety hazards such as equipment failure, energy waste, leaks, and deflagration. Therefore, to ensure the safe, stable, efficient, and long-term operation of the natural gas supply system, natural gas must be purified. This necessitates the use of natural gas filtration devices—devices that systematically remove impurities from natural gas through mechanisms such as physical interception, inertial separation, and adsorption-agglomeration.

[0003] Unlike piped natural gas, which mainly faces the problem of solid particles detaching from the inner wall of the pipeline, bottled natural gas contains incompletely removed C5+ heavy hydrocarbon components. Furthermore, it is more prone to water contamination during storage and transportation, leading to corrosion of the cylinder's inner wall. This results in internal impurities characterized by a core of liquid heavy hydrocarbons and free water, mixed with solid particles such as rust. These impurities are highly adhesive, easily condense and accumulate, are multiphase mixed, and are corrosive. However, existing natural gas filtration devices largely follow the design principles for piped natural gas (primarily composed of solid particles). They typically use simple wire mesh or filter paper, which can only intercept some solid particles, lacking an efficient and active liquid-phase separation mechanism. This allows liquid heavy hydrocarbons and water mist to either directly penetrate the filter material and contaminate downstream equipment, or remain inside the filter element and combine with solid impurities to form a difficult-to-remove sludge, rapidly clogging the flow channel. Simultaneously, the impurity accumulation process is invisible, making cleaning and maintenance difficult, and users cannot perform preventative maintenance before malfunctions occur. Therefore, we propose a natural gas filter. Summary of the Invention

[0004] One of the technical problems this application aims to solve is that existing natural gas filtration devices mostly follow the design concept for pipeline natural gas (mainly composed of solid particles). They typically use simple wire mesh or filter paper, which can only intercept some solid particles, but lack an efficient and active liquid phase separation mechanism. This results in liquid heavy hydrocarbons and water mist either directly penetrating the filter material and contaminating downstream equipment, or remaining inside the filter element and combining with solid impurities to form a difficult-to-remove paste-like sludge, which quickly blocks the flow channel. At the same time, the impurity accumulation process of the device is invisible and difficult to clean and maintain, making it impossible for users to perform preventive maintenance before a failure occurs.

[0005] To address the aforementioned technical problems, this application provides a natural gas filter, including an mounting plate and a filter chamber. A spiral guide plate is disposed within the filter chamber, and a collection chamber is located directly below the spiral guide plate. A filter plate is disposed within the filter chamber, and a filtration unit is disposed within the filter chamber to intercept impurities from the spiral guide plate and the collection chamber. When natural gas flows through, the spiral guide plate first guides the natural gas to form a rotating flow field, using centrifugal force to throw liquid impurities into the collection chamber. Then, the natural gas, after preliminary gas-liquid separation, passes through the filter plate to intercept any remaining solid impurities. A cleaning unit is disposed within the filter chamber to clean and discharge the impurities separated from the filter plate and the collection chamber.

[0006] In some embodiments, the filtration unit includes a mounting member disposed on a mounting plate, which fixes the mounting plate and the filter chamber to the gas cylinder. The filter chamber is provided with a separator for separating impurities in the natural gas, and a collecting member is provided in the filter chamber for collecting the separated impurities.

[0007] In some embodiments, the mounting component includes a cover plate disposed on a mounting plate. The cover plate is annular and has a plurality of rubber strips disposed circumferentially. The cover plate is provided with fastening bolts, which are threadedly connected to the cover plate. A rubber gasket is provided at the end of the fastening bolt that contacts the gas cylinder.

[0008] In some embodiments, the separating component includes a gas guide hose mounted on a mounting plate, with its two ends connected to a gas cylinder and a filter chamber, respectively. A mounting shaft is provided on the top surface of the collecting chamber, and the mounting shaft is connected to a spiral guide plate. A sliding rod is slidably mounted inside the mounting shaft, with one end of the sliding rod penetrating the collecting chamber and extending into it. A float is provided at the end of the sliding rod located inside the collecting chamber. A buffer groove is provided inside the mounting shaft, with a limiting plate at one end of the sliding rod located within the buffer groove. A push spring is sleeved on the other end of the sliding rod located within the buffer groove. A conical plug is provided at the end of the sliding rod away from the float. A filter tube is provided at the top of the filter chamber, with a limiting ring inside the filter tube that cooperates with the conical plug. A deflection shaft is rotatably mounted on the filter tube, connected to a filter plate, with one end of the deflection shaft passing through the filter tube. A rubber ring is provided along the edge of the filter plate.

[0009] In some embodiments, the collecting component includes a spiral guide groove formed on the inner wall of the filter chamber, a conical guide plate is provided on the top surface of the collecting chamber, an annular collecting groove is provided on the collecting chamber, and a plurality of collecting holes are formed in the collecting groove.

[0010] In some embodiments, the cleaning unit includes a flipping component disposed on the filter tube, which controls the filter plate to flip during cleaning. A backflushing component is disposed on the filter chamber, which pneumatically backflushes and cleans the filter plate. A discharge component is disposed in the collection chamber, which discharges the collected impurities.

[0011] In some embodiments, the flipping component includes a flipping screw rotatably mounted on the filter chamber, a movable rod slidably connected to the outer wall of the filter tube on the flipping screw, the movable rod being threadedly connected to the flipping screw, a movable rack on the movable rod, a flipping gear meshing with the movable rack on the deflection shaft, a power shaft rotatably mounted on the filter chamber, and a belt drive mechanism on the power shaft and the flipping screw.

[0012] In some embodiments, the backflush component includes a rotating shaft rotatably mounted on a filter tube, one end of which passes through the filter tube. A sealing plate is provided at one end of the rotating shaft inside the filter tube, and a rotating gear is provided at the end of the rotating shaft away from the sealing plate. A backflush rack meshing with the rotating gear is provided on the moving rod. A pneumatic chamber is provided at the top of the filter chamber. A piston plate is slidably mounted inside the pneumatic chamber. A traction rod is provided on the piston plate. One end of the traction rod passes through the pneumatic chamber and is slidably connected to the pneumatic chamber. A pressure spring is sleeved on one end of the traction rod inside the pneumatic chamber. A locking groove is provided on the traction rod. A recovery chamber is provided on the filter chamber. A locking block that cooperates with the locking groove is provided in the recovery chamber. A locking spring is provided in the recovery chamber. One end of the locking spring is connected to the locking block. A traction rope is provided on the locking block. A winding reel is provided on the power shaft, and one end of the traction rope is connected to the winding reel.

[0013] In some embodiments, the discharge component includes a conical guide plate II disposed at the bottom of the collection chamber, a discharge shaft rotatably disposed within the collection chamber, a scraper disposed on the discharge shaft that fits against the guide plate II, a linkage chamber disposed at the bottom of the collection chamber and the filter chamber, a linkage shaft rotatably disposed within the linkage chamber and connected to the discharge shaft, a discharge pipe disposed on the filter chamber, a torsion shaft rotatably disposed within the discharge pipe, the torsion shaft being connected to a power shaft, both ends of the torsion shaft penetrating the discharge pipe, a hemispherical blocking block disposed at a section of the torsion shaft located within the discharge pipe, linkage gears disposed on both the linkage shaft and the torsion shaft, a linkage toothed belt sleeved on the linkage gears, a protective cover disposed at the top of the filter chamber, one end of the power shaft and the traction rod penetrating the protective cover, a positioning block slidably disposed at the end of the power shaft located outside the protective cover, a positioning rod disposed on the positioning block, and two positioning grooves cooperating with the positioning rods being provided on the protective cover.

[0014] In some embodiments, the collection chamber is made of a transparent material, and an observation window is provided on the filter chamber at the location of the collection chamber.

[0015] This invention has at least the following beneficial effects:

[0016] The design solves the problem of filtering complex multiphase impurities in bottled natural gas by introducing a multi-stage, active separation mechanism and integrated safety maintenance functions. Its core lies in abandoning the traditional passive interception approach. First, a built-in spiral flow guide structure forces the natural gas flow field to rotate, using centrifugal force to achieve efficient and active separation of liquid heavy hydrocarbons and water mist, guiding them to a dedicated collection chamber. This fundamentally prevents liquid impurities from penetrating or combining with solid impurities to form clogging sludge. Building on this, subsequent filter plates specifically intercept residual solid particles after centrifugal separation, achieving sequential separation and fractionation of gas, liquid, and solid impurities. The process significantly improves filtration efficiency and dirt-holding capacity. Simultaneously, the design integrates a mechanical liquid level response mechanism based on the linkage of a float and a conical plug. This mechanism can automatically execute early warning flow restriction or safety shut-off based on changes in the liquid level within the collection chamber. It is coupled with a comprehensive cleaning unit that includes filter plate flipping, pneumatic backflushing, and scraper cleaning. This effectively removes and conveniently discharges highly adhesive sludge and deposited solids, completely changing the situation where impurities accumulate unseen and maintenance is difficult in traditional devices. It achieves a closed-loop process from efficient separation, visible status, safety protection to convenient maintenance, significantly improving the safety and reliability of bottled natural gas use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the mounting component structure of the present invention; Figure 3 This is a schematic diagram of the filter chamber structure of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure of the middle filter compartment; Figure 5 This is a schematic diagram of the separator structure of the present invention; Figure 6 This is a schematic diagram of the structure of the collecting component of the present invention; Figure 7 This is a schematic diagram of the discharge pipe structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram of area A in the middle; Figure 9 This is a schematic diagram of the structure of the flipping component and the recoil component of the present invention; Figure 10 For the present invention Figure 9 Explosion structure diagram; Figure 11 This is a schematic diagram of the pneumatic chamber structure of the present invention; Figure 12 For the present invention Figure 11 Enlarged structural diagram of area B in the middle; Figure 13This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0018] In the diagram: 1. Mounting plate; 2. Filter chamber; 3. Spiral guide plate; 4. Collection chamber; 5. Filter plate; 6. Filter unit; 7. Mounting component; 71. Cover plate; 72. Rubber strip; 73. Fastening bolt; 74. Rubber gasket; 8. Separating component; 81. Air guide hose; 82. Mounting shaft; 83. Sliding rod; 84. Float; 85. Buffer groove; 86. Push spring; 87. Conical plug; 88. Limiting ring; 89. Filter tube; 810. Deflection shaft; 811. Rubber ring; 812. Limiting plate; 9. Collection component; 91. Spiral guide groove; 92. Conical guide plate one; 93. Annular collection groove; 94. Collection hole; 10. Cleaning unit; 11. Tilting component; 111. Tilting screw; 112. Moving rod; 113. Moving rack; 114. Tilting gear; 115. Power shaft; 16. Belt drive mechanism; 12. Recoil component; 121. Sealing plate; 122. Rotating shaft; 123. Rotating gear; 124. Recoil rack; 125. Pneumatic chamber; 126. Piston plate; 127. Traction rod; 128. Pressure spring; 129. Locking groove; 1210. Recovery chamber; 1211. Locking block; 1212. Locking spring; 1213. Traction rope; 1214. Winding cable 13. Wheel; 131. Discharge component; 132. Second guide vane; 133. Discharge shaft; 134. Scraper; 135. Linkage chamber; 136. Linkage shaft; 137. Discharge pipe; 138. Torsion shaft; 139. Blocking block; 1310. Linkage gear; 1311. Linkage belt; 1312. Positioning block; 1313. Positioning groove; 1314. Positioning rod; 1315. Protective cover; 14. Observation window. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1-12This invention provides a technical solution: a natural gas filter, comprising an mounting plate 1 and a filter chamber 2. A spiral guide plate 3 is disposed within the filter chamber 2, and a collection chamber 4 is disposed directly below the spiral guide plate 3 within the filter chamber 2. A filter plate 5 is disposed within the filter chamber 2, and a filter unit 6 is disposed within the filter chamber 2 to intercept impurities from the spiral guide plate 3 and the collection chamber 4. When natural gas flows through, the spiral guide plate 3 guides the natural gas to form a rotating flow field, using centrifugal force to throw liquid impurities into the collection chamber 4. Then, the natural gas, after preliminary gas-liquid separation, passes through the filter plate 5 to intercept residual solid impurities. A cleaning unit 10 is disposed within the filter chamber 2 to clean and discharge the impurities separated from the filter plate 5 and the collection chamber 4.

[0021] The filter unit 6 includes a mounting component 7 mounted on the mounting plate 1, which fixes the mounting plate 1 and the filter chamber 2 to the gas cylinder. The filter chamber 2 is provided with a separator 8, which separates impurities in the natural gas. The filter chamber 2 is also provided with a collector 9, which collects the separated impurities.

[0022] Mounting component 7 includes a cover plate 71 mounted on mounting plate 1. The cover plate 71 is annular and has a plurality of rubber strips 72 arranged circumferentially. A fastening bolt 73 is provided on the cover plate 71 and is threadedly connected to the cover plate 71. A rubber gasket 74 is provided at the end of the fastening bolt 73 that contacts the gas cylinder.

[0023] The separator 8 includes a gas guide hose 81 mounted on the mounting plate 1, with both ends of the gas guide hose 81 connected to a gas cylinder and a filter chamber 2, respectively. A mounting shaft 82 is mounted on the top surface of the collection chamber 4, and the mounting shaft 82 is connected to a spiral guide plate 3. A sliding rod 83 is slidably mounted inside the mounting shaft 82, with one end of the sliding rod 83 penetrating the collection chamber 4 and extending into it. A float 84 is mounted at one end of the sliding rod 83 within the collection chamber 4. A buffer groove 85 is formed inside the mounting shaft 82, and the sliding rod 83 is located within the buffer groove 85. A limiting plate 812 is provided in one section. A push spring 86 is sleeved on one section of the sliding rod 83 located in the buffer groove 85. A conical plug 87 is provided at the end of the sliding rod 83 away from the float 84. A filter tube 89 is provided at the top of the filter chamber 2. A limiting ring 88 that cooperates with the conical plug 87 is provided in the filter tube 89. A deflection shaft 810 is rotatably provided on the filter tube 89. The deflection shaft 810 is connected to the filter plate 5. One end of the deflection shaft 810 passes through the filter tube 89. A rubber ring 811 is provided on the edge of the filter plate 5.

[0024] The collecting component 9 includes a spiral guide groove 91 formed on the inner wall of the filter chamber 2, a conical guide plate 92 provided on the top surface of the collecting chamber 4, an annular collecting groove 93 provided on the collecting chamber 4, and a plurality of collecting holes 94 formed in the collecting groove.

[0025] In use, first connect the gas delivery hose 81 to the gas outlet of the gas cylinder. The gas delivery hose 81 is equipped with a valve to control the flow of natural gas. Then, turn on the gas cylinder valve. After that, put the mounting plate 1 and the cover plate 71 on the top of the gas cylinder. The rubber strip 72 set in the inner circumference of the cover plate 71 can keep the mounting plate 1 stable. Then, turn the fastening bolt 73 to squeeze the top of the gas cylinder, thereby completing the quick installation and fixation of the mounting plate 1 and the filter chamber 2.

[0026] After completion, open the valve on the gas delivery hose 81. The natural gas in the gas cylinder enters the filter chamber 2 through the gas delivery hose 81. After the natural gas enters the filter chamber 2 tangentially through the gas inlet, it is guided by the fixed spiral guide plate 3, changing from a straight flow to a stable high-speed spiral rotational flow along the chamber wall. During this process, the natural gas forms a strong rotating vortex. The liquid impurities it carries are subjected to a strong centrifugal force due to their density being much greater than that of the gas. They are continuously thrown against the inner wall of the filter chamber 2 and accumulate on the wall surface. Finally, they flow down the wall surface to the bottom collection tank and then fall into the collection chamber 4 through the collection hole 94 on the collection tank. As more and more waste liquid is collected in the collection chamber 4, the float 84 rises under the action of buoyancy and pushes the sliding rod 83 and the conical plug 87 located on the sliding rod 83 to rise. When the liquid in the collection chamber 4 reaches the maximum liquid level, the conical plug 87 rises to the highest point and cooperates with the limiting ring 88, so that the natural gas stops flowing.

[0027] The fastening mechanism with flexible rubber strips 72 and rubber gaskets 74 enables quick and stable connection with gas cylinders of different specifications, ensuring the overall stability of the system. The core filtration and separation process abandons the traditional passive interception mode, using spiral guide plates 3 to force natural gas to generate high-speed swirling flow. Centrifugal force is used to efficiently and actively separate liquid phase impurities, mainly liquid heavy hydrocarbons and water, and guides them through the optimized spiral guide grooves 91 and collection groove structure, effectively preventing secondary entrainment of droplets and adhesion and accumulation inside the filter media, thus avoiding the formation of sludge blockage at the source. The integrated float ball 84-cone plug 87 mechanical linkage safety mechanism can directly respond to changes in the liquid level in the collection chamber 4. When impurities accumulate excessively or when there is a momentary overflow of liquid medium, it automatically cuts off the gas path, providing intrinsic safety protection without external power. The overall design integrates efficient centrifugal separation, orderly collection, and automatic safety response, significantly improving the overall reliability, safety protection level, and ability to handle complex multiphase impurities of the filter. At the same time, its structural design also facilitates daily observation and centralized maintenance.

[0028] The cleaning unit 10 includes a flipping component 11 disposed on the filter tube 89, which controls the filter plate 5 to flip during cleaning. The filter chamber 2 is provided with a backflushing component 12, which pneumatically backflushes and cleans the filter plate 5. The collection chamber 4 is provided with a discharge component 13, which discharges the collected impurities.

[0029] The flipping component 11 includes a flipping screw 111 rotatably mounted on the filter chamber 2. The flipping screw 111 is provided with a movable rod 112 that is slidably connected to the outer wall of the filter tube 89. The movable rod 112 is threadedly connected to the flipping screw 111. The movable rod 112 is provided with a movable rack 113. The deflection shaft 810 is provided with a flipping gear 114 that meshes with the movable rack 113. The filter chamber 2 is rotatably mounted with a power shaft 115. The power shaft 115 and the flipping screw 111 are provided with a belt drive mechanism 116.

[0030] The backflush component 12 includes a rotating shaft 122 rotatably mounted on the filter tube 89. One end of the rotating shaft 122 passes through the filter tube 89. A sealing plate 121 is provided at one end of the rotating shaft 122 inside the filter tube 89. A rotating gear 123 is provided at the end of the rotating shaft 122 away from the sealing plate 121. A backflush rack 124 that meshes with the rotating gear 123 is provided on the moving rod 112. A pneumatic chamber 125 is provided at the top of the filter chamber 2. A piston plate 126 is slidably mounted inside the pneumatic chamber 125. A traction rod 127 is provided on the piston plate 126. One end of the traction rod 127 passes through the pneumatic chamber 125 and engages with the pneumatic chamber. A sliding connection is made in section 125. A pressure spring 128 is sleeved on one end of the traction rod 127 inside the pneumatic chamber 125. A locking groove 129 is provided on the traction rod 127. A recovery chamber 1210 is provided on the filter chamber 2. A locking block 1211 that cooperates with the locking groove 129 is provided in the recovery chamber 1210. A locking spring 1212 is provided in the recovery chamber 1210. One end of the locking spring 1212 is connected to the locking block 1211. A traction rope 1213 is provided on the locking block 1211. A winding wheel 1214 is provided on the power shaft 115. One end of the traction rope 1213 is connected to the winding wheel 1214.

[0031] The discharge component 13 includes a conical guide plate 131 disposed at the bottom of the collection chamber 4. A discharge shaft 132 is rotatably disposed within the collection chamber 4. A scraper 133, which is in contact with the guide plate 131, is disposed on the discharge shaft 132. A linkage chamber 134 is disposed at the bottom of the collection chamber 4 and the filter chamber 2. A linkage shaft 135, connected to the discharge shaft 132, is rotatably disposed within the linkage chamber 134. A discharge pipe 136 is disposed on the filter chamber 2. A torsion shaft 137 is rotatably disposed within the discharge pipe 136. The torsion shaft 137 is connected to a power shaft 115. Both ends of the torsion shaft 137 pass through the discharge pipe 136. A hemispherical blocking block 138 is provided in a section inside the discharge pipe 136. A connecting gear 139 is provided on both the connecting shaft 135 and the torsion shaft 137. A connecting toothed belt 1310 is sleeved on the connecting gear 139. A protective cover 1314 is provided at the top of the filter chamber 2. One end of the power shaft 115 and the traction rod 127 passes through the protective cover 1314. A positioning block 1311 is slidably provided at the end of the power shaft 115 outside the protective cover 1314. A positioning rod 1313 is provided on the positioning block 1311. Two positioning grooves 1312 are provided on the protective cover 1314 to cooperate with the positioning rod 1313.

[0032] When it is necessary to discharge the waste liquid in the collection chamber 4, firstly, pull the positioning block 1311 to disengage the positioning rod 1313 from the positioning groove 1312. Then, rotate the positioning block 1311 ninety degrees and insert it into another positioning groove 1312. The design of the two positioning grooves 1312 allows the rotation angle to be stably maintained at ninety degrees. While the positioning block 1311 rotates, it drives the power shaft 115 to rotate synchronously. When the power shaft 115 rotates, it drives the torsion shaft 137 to rotate, thereby pushing the sealing block 138 to release the blockage of the discharge pipe 136, so that the waste liquid in the collection chamber 4 can be discharged from the discharge pipe 136. When the torsion shaft 137 rotates, it drives the connecting shaft 135 to rotate through the connecting gear 139 and the connecting belt 1310. The rotation of the connecting shaft 135 drives the discharge shaft 132 to rotate. The rotation of the discharge shaft 132 drives the scraper 133 to rotate. The rotation of the scraper 133 cleans the waste liquid deposited on the guide plate.

[0033] While the power shaft 115 rotates, it drives the flipping screw 111 to rotate synchronously through the belt drive mechanism 116. The rotation of the flipping screw 111 causes the moving rod 112 to move. When the moving rod 112 moves, it drives the moving rack 113 to move, thereby pushing the flipping gear 114 meshing with it to rotate. The rotation of the flipping gear 114 causes the deflection shaft 810 and the filter plate 5 to rotate 180 degrees. At the same time, the design of the rubber ring 811 can ensure the fit between the filter plate 5 and the inner wall of the filter tube 89 after rotation.

[0034] As the moving rod 112 moves, it drives the recoil rack 124 mounted on it to rise synchronously, which in turn drives the rotating gear 123 meshing with the recoil rack 124 to rotate synchronously. The rotation of the rotating gear 123 drives the rotating shaft 122 to rotate synchronously. The rotation of the rotating shaft 122 drives the sealing plate 121 to deflect by ninety degrees, so that the filter tube 89 is in a sealed state.

[0035] As the power shaft 115 rotates, it drives the winding wheel 1214 to rotate, thereby winding the traction rope 1213. When the traction rope 1213 is wound, it drives the locking block 1211 connected to it to overcome the elastic force of the locking spring 1212 and retract, causing the locking block 1211 to disengage from the locking groove on the traction rod 127. After the locking block 1211 disengages from the locking groove, the piston plate 126 loses its limit and moves under the push of the pressure spring 128, sending the gas in the pneumatic chamber 125 into the filter tube 89 through the pipe, making the air pressure in the filter tube 89 higher, thereby cleaning the filter plate 5 through the backflow airflow and accelerating the discharge of waste liquid.

[0036] A mechanical linkage system precisely coordinated and driven by a single power shaft 115 brings significant benefits to the natural gas filtration process. Its core lies in fundamentally optimizing the maintenance operations of the filtration system, integrating multiple key maintenance actions such as venting, mechanical cleaning, and filter plate 5 cleaning into a coherent and orderly automated process, greatly improving the thoroughness of maintenance and ease of operation. Specifically, after initiating the venting procedure, the system synchronously drives the scraper 133 to rotate to remove stubborn deposits adhering to the inner wall of the collection chamber 4, while simultaneously linking the flipping mechanism to rotate the filter plate 5 180 degrees, and in conjunction with the sealing plate... The filter chamber is sealed to create a tight seal for subsequent high-pressure pneumatic backflushing. Finally, the directional airflow released from the pressure effectively strips away solid impurities embedded on and deep within the surface of filter plate 5, allowing them to be completely discharged along with the waste liquid. This design not only significantly enhances the ability to clean viscous and easily caking mixed impurities and effectively restores the filtration flux and separation performance of filter plate 5, but also ensures the safety and reliability of the operation process itself through rigorous mechanical sequence control. As a result, the effective working cycle of the filter is extended overall, the frequency and difficulty of maintenance are reduced, and the long-term stable and efficient operation of the natural gas supply system is guaranteed.

[0037] Example 2: Please refer to Figure 13This invention provides a technical solution: the collection chamber 4 is made of transparent material, and an observation window 14 is provided on the filter chamber 2 at the position of the collection chamber 4. The design of the observation window 14 realizes intuitive, lasting and protected visual monitoring of the state inside the collection chamber 4. By using transparent material to make the body of the collection chamber 4, it is ensured that the user can directly observe the type, amount and state of the impurities accumulated inside; and the additional dedicated observation window 14 at the corresponding position on the outer shell of the filter chamber 2 plays a dual role of focusing the view, enhancing the prompt, and protecting the transparent chamber. This not only helps the user to clearly judge when cleaning or maintenance is needed, but also enables timely intervention to avoid blockage or performance degradation.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A filter for natural gas, comprising a mounting plate (1) and a filter chamber (2), characterized in that: The filter chamber (2) is provided with a spiral guide plate (3), and a collection chamber (4) is provided directly below the spiral guide plate (3) in the filter chamber (2). The filter chamber (2) is provided with a filter plate (5), and a filter unit (6) is provided in the filter chamber (2) to intercept the spiral guide plate (3) and the collection chamber (4). When natural gas flows through, the spiral guide plate (3) first guides the natural gas to form a rotating flow field, and centrifugal force is used to throw the liquid impurities in it to the collection chamber (4). Then, the natural gas that has undergone preliminary gas-liquid separation passes through the filter plate (5) to intercept the solid impurities remaining therein. The filter chamber (2) is provided with a cleaning unit (10) to clean and discharge the impurities separated from the filter plate (5) and the collection chamber (4).

2. The natural gas filter according to claim 1, characterized in that: The filter unit (6) includes a mounting component (7) installed on the mounting plate (1), which fixes the mounting plate (1) and the filter chamber (2) to the gas cylinder. The filter chamber (2) is provided with a separator (8) which separates impurities in the natural gas. The filter chamber (2) is provided with a collector (9) which collects the separated impurities.

3. The filter for natural gas according to claim 2, characterized in that: The mounting component (7) includes a cover plate (71) disposed on the mounting plate (1). The cover plate (71) is annular and has a plurality of rubber strips (72) disposed circumferentially on the cover plate (71). A fastening bolt (73) is disposed on the cover plate (71). The fastening bolt (73) is threadedly connected to the cover plate (71). A rubber gasket (74) is disposed at the end of the fastening bolt (73) that contacts the gas cylinder.

4. The natural gas filter according to claim 3, characterized in that: The separator (8) includes a gas guide hose (81) mounted on the mounting plate (1). The two ends of the gas guide hose (81) are connected to the gas cylinder and the filter chamber (2) respectively. The top surface of the collection chamber (4) is provided with a mounting shaft (82). The mounting shaft (82) is connected to the spiral guide plate (3). A sliding rod (83) is slidably arranged inside the mounting shaft (82). One end of the sliding rod (83) passes through the collection chamber (4) and extends into the collection chamber (4). A float (84) is provided at one end of the sliding rod (83) inside the collection chamber (4). A buffer groove (85) is opened inside the mounting shaft (82). The sliding rod (83) is located in the buffer groove (85). A limiting plate (812) is provided in one section of the filter chamber (2). A push spring (86) is sleeved in one section of the sliding rod (83) located in the buffer groove (85). A conical plug (87) is provided at the end of the sliding rod (83) away from the float (84). A filter tube (89) is provided at the top of the filter chamber (2). A limiting ring (88) is provided in the filter tube (89) to cooperate with the conical plug (87). A deflection shaft (810) is rotatably provided on the filter tube (89). The deflection shaft (810) is connected to the filter plate (5). One end of the deflection shaft (810) passes through the filter tube (89). A rubber ring (811) is provided on the edge of the filter plate (5).

5. The natural gas filter according to claim 4, characterized in that: The collecting component (9) includes a spiral guide groove (91) opened on the inner wall of the filter chamber (2), a conical guide plate (92) is provided on the top surface of the collecting chamber (4), an annular collecting groove (93) is provided on the collecting chamber (4), and multiple collecting holes (94) are opened in the collecting groove.

6. The filter for natural gas according to claim 5, characterized in that: The cleaning unit (10) includes a flipping component (11) installed on the filter tube (89). The flipping component (11) controls the filter plate (5) to flip during cleaning. The filter chamber (2) is provided with a backflushing component (12). The backflushing component (12) is used to pneumatically backflush and clean the filter plate (5). The collection chamber (4) is provided with a discharge component (13). The discharge component (13) is used to discharge the collected impurities.

7. The natural gas filter according to claim 6, characterized in that: The flipping component (11) includes a flipping screw (111) rotatably mounted on the filter chamber (2), a movable rod (112) slidably connected to the outer wall of the filter tube (89) on the flipping screw (111), the movable rod (112) being threadedly connected to the flipping screw (111), a movable rack (113) on the movable rod (112), a flipping gear (114) meshing with the movable rack (113) on the deflection shaft (810), a power shaft (115) rotatably mounted on the filter chamber (2), and a belt drive mechanism (116) on the power shaft (115) and the flipping screw (111).

8. The filter for natural gas according to claim 7, characterized in that: The recoil component (12) includes a rotating shaft (122) rotatably mounted on the filter tube (89). One end of the rotating shaft (122) passes through the filter tube (89). A sealing plate (121) is provided at one end of the rotating shaft (122) inside the filter tube (89). A rotating gear (123) is provided at the end of the rotating shaft (122) away from the sealing plate (121). A recoil rack (124) meshing with the rotating gear (123) is provided on the moving rod (112). A pneumatic chamber (125) is provided at the top of the filter chamber (2). A piston plate (126) is slidably mounted inside the pneumatic chamber (125). A traction rod (127) is provided on the piston plate (126). One end of the traction rod (127) passes through the pneumatic chamber (125) and interacts with the air... The pneumatic chamber (125) is slidably connected. A pressure spring (128) is sleeved on one end of the traction rod (127) inside the pneumatic chamber (125). A locking groove (129) is opened on the traction rod (127). A recycling chamber (1210) is provided on the filter chamber (2). A locking block (1211) that cooperates with the locking groove (129) is provided in the recycling chamber (1210). A locking spring (1212) is provided in the recycling chamber (1210). One end of the locking spring (1212) is connected to the locking block (1211). A traction rope (1213) is provided on the locking block (1211). A winding wheel (1214) is provided on the power shaft (115). One end of the traction rope (1213) is connected to the winding wheel (1214).

9. The filter for natural gas according to claim 8, characterized in that: The discharge component (13) includes a conical guide plate (131) disposed at the bottom of the collection chamber (4), a discharge shaft (132) rotatably disposed inside the collection chamber (4), a scraper (133) fitted to the guide plate (133) disposed on the discharge shaft (132), a linkage chamber (134) disposed at the bottom of the collection chamber (4) and the filter chamber (2), a linkage shaft (135) rotatably disposed inside the linkage chamber (134) and connected to the discharge shaft (132), a discharge pipe (136) disposed on the filter chamber (2), a torsion shaft (137) rotatably disposed inside the discharge pipe (136), the torsion shaft (137) being connected to the power shaft (115), and both ends of the torsion shaft (137) penetrating the discharge pipe (136). 37) A hemispherical sealing block (138) is provided in a section inside the discharge pipe (136). A connecting gear (139) is provided on both the connecting shaft (135) and the torsion shaft (137). A connecting toothed belt (1310) is sleeved on the connecting gear (139). A protective cover (1314) is provided at the top of the filter chamber (2). One end of the power shaft (115) and the traction rod (127) passes through the protective cover (1314). A positioning block (1311) is slidably provided at the end of the power shaft (115) outside the protective cover (1314). A positioning rod (1313) is provided on the positioning block (1311). Two positioning grooves (1312) are opened on the protective cover (1314) to cooperate with the positioning rod (1313).

10. The filter for natural gas according to claim 9, characterized in that: The collection chamber (4) is made of transparent material, and the filter chamber (2) is provided with an observation window (14) located at the position of the collection chamber (4).

Images