Natural gas exploitation waste gas treatment device

Abstract

The application relates to the technical field of natural gas exploitation waste gas treatment, and particularly discloses a natural gas exploitation waste gas treatment device, which comprises a filter piece, the filter piece comprises a hole plate one provided with a plurality of through holes one and a hole plate two provided with a plurality of through holes two, and the overlapping parts of the through holes one and the through holes two are formed with filter holes; the hole opening mechanism comprises a pushing piece and a knocking piece; the pushing piece comprises a rotating rod one, a shielding cover, a moving part, a pushing part one and a pushing part two; the shielding cover is installed in the filter mechanism and used for shielding the filter piece to be hole opened; the moving part is elastically connected with the shielding cover; clockwise rotation of the rotating rod one can drive the pushing part two to push the shielding cover to rotate; counterclockwise rotation of the rotating rod one can drive the pushing part two to push the moving part to move, so that the pushing part one pushes the hole plate two to move upwards and increase the filter holes; and the knocking piece can generate vibration; the natural gas exploitation waste gas treatment device can increase the filter holes and hole open the blocked filter holes in the form of vibration.

Description

Technical Field

[0001] This invention relates to the field of natural gas extraction waste gas treatment technology, and specifically to a natural gas extraction waste gas treatment device. Background Technology

[0002] Natural gas extraction is a crucial process for obtaining clean energy. It typically involves drilling thousands of meters underground, penetrating rock strata, and locating gas-rich reservoirs. During extraction, advanced technologies and equipment are used to extract natural gas from the ground. This natural gas undergoes purification to remove impurities and harmful components, becoming a high-quality energy source. Natural gas extraction generates waste gas. This waste gas is first treated by a vertical desander to remove sand particles, then by a high-pressure gas-liquid separator to separate the liquid. Subsequently, it is cooled by a pre-cooling heat exchanger and then enters a supersonic cyclone separator for deep dehydration and hydrocarbon removal. Finally, the temperature is regulated by a heat exchanger, and after reaching the required standards, it is measured by a high-grade valve-type orifice plate flow meter and tested by a water dew point detector.

[0003] Chinese patent document CN210829219U discloses a skid-mounted wellhead fracturing venting and recovery system, including a choke manifold. The inlet of the choke manifold is connected to the test production natural gas wellhead, and the outlet is connected to a desanding device. The desanding device is connected to a high-pressure separation device via a heating and depressurization device. The high-pressure separation device is provided with a high-pressure gas outlet and a first drain outlet. The high-pressure gas outlet is connected to an external network pipe via a gas transmission pipeline, and the first drain outlet is connected to a medium-pressure separation device. The medium-pressure separation device is provided with a waste gas outlet and a second drain outlet. The waste gas outlet is connected to a venting pipeline, and the second drain outlet is connected to a waste liquid pipeline.

[0004] During operation, sand-laden natural gas from the test wellhead enters the throttling manifold. After throttling, the sand-laden natural gas enters the desanding device, where sand particles are separated from the natural gas. The desanded natural gas then enters the heating and depressurization device, which heats and depressurizes the high-pressure natural gas into low-pressure natural gas. The depressurized natural gas then enters the high-pressure separation device, which performs gas-liquid separation. The separated natural gas is metered by a gas meter and then directly fed into the external transmission pipeline. The separated liquid enters the medium-pressure separation device, where gas-liquid separation is performed again. The separated liquid is metered by a liquid flow meter and then directly enters the liquid storage device for centralized processing. A small amount of separated natural gas is fed into the combustion pool for centralized combustion.

[0005] However, the above-mentioned patent documents still have the following shortcomings: In the process of using a desander to treat waste gas to remove sand particles, in order to improve the sand removal effect, a screen filter is often installed inside the desander. The waste gas generated during natural gas extraction enters the screen filter after being desandered by cyclone. Under the push of the airflow, the sand particles are easily compacted and clog the filter holes, resulting in a decrease in the efficiency of the screen filter, which in turn affects the normal operation of the screen filter. Summary of the Invention

[0006] This invention provides a natural gas extraction waste gas treatment device, which aims to solve the problem in related technologies that sand particles easily accumulate tightly and clog filter holes under the impetus of airflow, resulting in a decrease in the efficiency of the screen filter and thus affecting the normal operation of the screen filter.

[0007] The natural gas extraction waste gas treatment device of the present invention includes a sand removal mechanism, a filtration mechanism, and a perforation dredging mechanism. The filtration mechanism includes multiple filter elements, each including a perforated plate with multiple through holes and a perforated plate with multiple through holes. The perforated plate is mounted on the filtration mechanism, and the perforated plate is elastically connected to the filtration mechanism. The overlapping portion of the through holes forms filter holes. The perforation dredging mechanism includes a pushing member and a striking member. The pushing member includes a rotating rod, a shield, a moving part, a pushing part 1, and a pushing part 2. The rotating rod 1 is rotatably connected to the sand removal mechanism. The shield is mounted inside the filtration mechanism to shield the filter element to be dredged. The moving part is elastically connected to the shield. The pushing part 1 is connected to the moving part, and the pushing part 2 is connected to the rotating rod 1. Rotating the rotating rod 1 clockwise can drive the pushing part 2 to push the shield to rotate. Rotating the rotating rod 1 counterclockwise can drive the pushing part 2 to push the moving part to move, so that the pushing part 1 pushes the perforated plate 2 upward and enlarges the filter holes. The striking member is connected inside the shield and can generate vibration.

[0008] Beneficial effects: When treating exhaust gas, the exhaust gas first enters the sand removal mechanism for sand removal, then passes through multiple filter elements for further filtration, and is then transported to the next treatment equipment for the next step of processing. When unclogging the filter holes on the filter element, the rotating rod rotates clockwise to drive the pushing part two to push the shield to rotate, so that the shield covers the filter element to be unclogged. At this time, the exhaust gas no longer passes through the filter element. Then, the rotating rod rotates counterclockwise to drive the pushing part two to move the moving part, so that the pushing part one pushes the perforated plate two upward and enlarges the filter holes. Then, the striking part generates vibration and transmits the vibration to the filter element to be unclogged, thereby causing the sand particles blocking the filter holes to fall off, avoiding a decrease in the efficiency of the filtration mechanism and avoiding affecting the normal operation of the filtration mechanism.

[0009] Preferably, the filtration mechanism further includes a mounting frame and a base plate. The mounting frame is connected inside the sand removal mechanism and has multiple mounting ports. Multiple filter elements are respectively connected to the multiple mounting ports. The base plate is connected to the bottom of the mounting frame and is used to support the multiple filter elements.

[0010] Its effect is that the installation of the filter elements is facilitated by the mounting bracket and base plate.

[0011] Preferably, the filter element further includes an elastic structure. The first perforated plate is inserted into the mounting port on the mounting frame, and the bottom of the first perforated plate is inserted into the bottom plate. The second perforated plate is slidably connected to the mounting port on the mounting frame. The elastic structure is installed on the top of the second perforated plate, and the top of the elastic structure abuts against the inner top wall of the mounting port. The elastic structure is in a compressed state.

[0012] Its effect is that the elastic structure in a compressed state can squeeze the second perforated plate, thereby enhancing the stability of the filter element during use.

[0013] Preferably, the pushing component further includes a guide rail, an elastic part, a fixed part, and a lifting part. The guide rail is connected inside the shield, the moving part is limited and slidably connected inside the guide rail, the elastic part is connected between the moving part and the guide rail, the fixed part is connected to the moving part, the pushing part is connected to the fixed part, and multiple lifting parts are provided. The multiple lifting parts are respectively connected to the perforated plates on multiple filter elements, and the lifting part is provided with an inclined surface.

[0014] Its effect is that the guide rail can guide the movement of the moving part, the elastic part can drive the moving part to reset, and when the moving part moves toward the filter element to be dredged, it drives the fixed part and the pushing part to move, so that the pushing part presses the inclined surface of the lifting part, thereby causing the lifting part to drive the perforated plate to move upward.

[0015] Preferably, the striking component includes a second rotating rod, a third pushing part, a connecting arm, a striking part, a second elastic part, and a vertical rod. The second rotating rod is rotatably connected to the sand removal mechanism and passes through the first rotating rod. The third pushing part is connected to the bottom end of the second rotating rod. The connecting arm is connected to the fixed part. The striking part is inserted into the connecting arm. The second elastic part is connected between the striking part and the connecting arm. The vertical rod is connected to the striking part.

[0016] Its effect is that when the fixed part moves, it can drive the connecting arm, the striking part, the second elastic part and the upright to move, so that the upright is located within the rotation trajectory of the third pusher. At this time, the second rotating rod drives the third pusher to rotate, and the third pusher can push the upright, so that the upright drives the striking part to move away from the fixed part and compresses the second elastic part. After the third pusher separates from the upright, the second elastic part drives the striking part and the upright to reset, so that the striking part strikes the fixed part and generates vibration.

[0017] Preferably, the pore-removing mechanism further includes a driving component, which includes a driving source and two gears. The driving source is connected to the sand removal mechanism, and the two gears are respectively connected to the output end of the rotating rod and the driving source. The two gears are meshed together.

[0018] Its effect is that starting the drive source drives two gears to mesh and transmit power, which can provide power for the clockwise or counterclockwise rotation of the rotating rod.

[0019] Preferably, it also includes a second driving component, which includes a second driving source and two second gears. The second driving source is connected to the sand removal mechanism, and the two second gears are respectively connected to the second rotating rod and the output end of the second driving source, and the two second gears are meshed together.

[0020] Its effect is that starting the second drive source drives the two gears to mesh and transmit power, which can provide power for the rotation of the second rotating rod.

[0021] Preferably, a shielding pad is connected to the fixing part.

[0022] Its effect is that the moving fixed part drives the pushing part to push the lifting part upward, so that after the perforated plate 2 moves upward, the shielding pad can contact the inner side of the perforated plate 2. The shielding pad blocks the filter holes from the inside of the filter element, so as to prevent the sand particles in the filter holes from entering the filter mechanism through the filter holes when the filter holes are ventilated, thereby preventing the sand particles from entering the next treatment equipment with the exhaust gas.

[0023] Preferably, the pore-forming mechanism further includes a positioning component, which includes a fixing ring, a positioning part, and an elastic part. The fixing ring is connected to the base plate, and the inner side of the fixing ring is provided with multiple positioning slots, which are respectively provided with multiple filter elements. The positioning part is inserted into the shield, and the elastic part is connected between the positioning part and the shield. The positioning part can be inserted into the positioning slot, and the positioning part is provided with a slope.

[0024] Its effect is that when the second pushing part rotates clockwise and pushes the cover, the second inclined surface of the positioning part is squeezed and can move in the direction of extending into the cover, so that the positioning part is disengaged from the positioning socket, so that the cover can rotate clockwise. When the second pushing part rotates counterclockwise and pushes the moving part, the positioning part can position and block the cover under the action of the positioning part, preventing the cover from rotating counterclockwise.

[0025] Preferably, the elastic structure is a telescopic rod with a built-in spring, and the telescopic end of the telescopic rod faces upward. The bottom end of the telescopic rod is threadedly connected to the top of the second orifice plate, and the telescopic end of the telescopic rod contacts the inner top wall of the mounting port.

[0026] The beneficial effects of this invention are:

[0027] 1. When clearing the filter holes on the filter element, start the drive unit to drive the rotating rod to rotate clockwise, and the rotating rod to drive the pusher to rotate the shield, so that the shield covers the filter element to be cleared. At this time, the exhaust gas no longer passes through the filter element to avoid the exhaust gas continuously exerting force on the sand particles blocking the filter holes, so as to facilitate the subsequent clearing of the filter holes. Then, start the drive unit to drive the rotating rod to rotate counterclockwise, and the rotating rod to drive the pusher to move the moving part, so that the pusher pushes the perforated plate to move upward and enlarge the filter holes. Then, the striking part generates vibration and transmits the vibration to the filter element to be cleared, so that the sand particles blocking the filter holes fall off, avoiding the decrease in the efficiency of the filtration mechanism and avoiding affecting the normal operation of the filtration mechanism.

[0028] 2. The filter holes are sealed from the inside of the filter element by a shielding pad to prevent sand particles inside the filter holes from entering the filtration mechanism when the filter holes are opened, thereby preventing the sand particles from entering the next treatment equipment with the exhaust gas. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present invention.

[0031] Figure 3 This is a front view schematic diagram of the filtration mechanism of the present invention.

[0032] Figure 4 This is a three-dimensional structural diagram of the filtration mechanism of the present invention.

[0033] Figure 5 This is a front view cross-sectional structural diagram of the filtration mechanism of the present invention.

[0034] Figure 6 This is a schematic diagram of the front cross-sectional structure of the porous mechanism of the present invention.

[0035] Figure 7 This is a top view cross-sectional structural diagram of the filtration mechanism and the perforated mechanism of the present invention.

[0036] Figure 8 This is a front view cross-sectional structural diagram of the filtration mechanism and the porous mechanism of the present invention.

[0037] Figure 9 This is a top view cross-sectional structural diagram of the perforated mechanism of the present invention.

[0038] Figure label:

[0039] 1. Sand removal mechanism; 11. Sand removal cylinder; 12. Air inlet pipe; 13. Sand outlet; 14. Baffle plate; 15. Vertical pipe; 16. Air outlet pipe; 17. Top cover; 2. Filtration mechanism; 21. Mounting frame; 22. Base plate; 23. Filter element; 231. Perforated plate one; 232. Perforated plate two; 233. Elastic structure; 3. Perforation mechanism; 31. Pushing component; 311. Rotating rod one; 312. Shielding cover; 313. Guide rail; 314. Moving part; 315. Elastic part one; 316. Fixing part; 317. Pushing component Part 1; 318. Lifting part; 319. Pushing part 2; 32. Striking component; 321. Rotating rod 2; 322. Pushing part 3; 323. Connecting arm; 324. Striking part; 325. Elastic part 2; 326. Upright pole; 33. Driving component 1; 331. Driving source 1; 332. Gear 1; 34. Driving component 2; 341. Driving source 2; 342. Gear 2; 35. Covering pad; 36. Positioning component; 361. Fixing ring; 362. Positioning socket; 363. Positioning part; 364. Elastic part 3. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] like Figures 1 to 9 As shown, the natural gas extraction waste gas treatment device of the present invention includes a sand removal mechanism 1, a filtration mechanism 2, and a perforation removal mechanism 3. The sand removal mechanism 1 is used to remove sand from the waste gas. The filtration mechanism 2 is connected inside the sand removal mechanism 1. The waste gas after sand removal passes through the filtration mechanism 2. The filtration mechanism 2 can filter the treated waste gas again to enhance the sand removal effect. The perforation removal mechanism 3 is connected inside the filtration mechanism 2. The perforation removal mechanism 3 can clear the filter holes on the filtration mechanism 2 that are blocked by sand particles, so as to avoid the decrease in the efficiency of the filtration mechanism 2 and avoid affecting the normal operation of the filtration mechanism 2.

[0042] During the desanding operation of the exhaust gas, the exhaust gas enters the desanding mechanism 1 at a certain speed along the tangential direction, forming a high-speed rotating vortex. The centrifugal force generated by the rotation causes the sand particles in the exhaust gas to move towards the inner wall of the desanding mechanism 1, while the less dense gas gathers towards the center, forming an inner and outer layered "gas-solid ring". The sand particles close to the inner wall of the desanding mechanism 1 slide down along the inner wall of the desanding mechanism 1 under the combined action of gravity and centrifugal force, and are eventually discharged outward. The exhaust gas in the center flows upward and passes through the filtration mechanism 2, which filters the sand particles in the exhaust gas again. During this process, the perforation unclogging mechanism 3 is activated, and the operating perforation unclogging mechanism 3 unclogs the filter holes on the filtration mechanism 2 that are blocked by sand particles.

[0043] like Figures 1 to 3As shown, the sand removal mechanism 1 includes a sand removal cylinder 11, an air inlet pipe 12, a baffle plate 14, a vertical pipe 15, an air outlet pipe 16, and a top cover 17. The air inlet pipe 12 is connected to the outside of the sand removal cylinder 11. A sand discharge port 13 is provided at the bottom of the sand removal cylinder 11. Exhaust gas can enter the sand removal cylinder 11 at a certain speed along the tangential direction through the air inlet pipe 12, forming a high-speed rotating vortex. The centrifugal force generated by the rotation causes the sand particles in the exhaust gas to move towards the inner wall of the sand removal cylinder 11, while the less dense gas gathers towards the center, forming a layered "gas-solid ring". The sand particles near the inner wall of the sand removal cylinder 11 are affected by the combined forces of gravity and centrifugal force. Under the action of the filter, the gas slides down the inner wall of the sand removal cylinder 11 and is finally discharged outward through the sand discharge port 13. The waste gas in the center flows upward. The baffle 14 is connected to the upper inner side of the sand removal cylinder 11. The vertical pipe 15 is connected to the baffle 14. The air outlet pipe 16 is connected to the upper outer side of the sand removal cylinder 11. The baffle 14 is located between the air outlet pipe 16 and the air inlet pipe 12. The top cover 17 is connected to the top of the sand removal cylinder 11. The filter mechanism 2 is connected to the bottom of the vertical pipe 15. After the upward-flowing waste gas passes through the filter mechanism 2, it is transported by the vertical pipe 15 to the top of the baffle 14 and then by the air outlet pipe 16 to the next treatment device.

[0044] After passing through the inlet pipe 12, the exhaust gas enters the sand removal cylinder 11 at a certain speed along the tangential direction, forming a high-speed rotating vortex. The centrifugal force generated by the rotation causes the sand particles in the exhaust gas to move towards the inner wall of the sand removal cylinder 11, while the less dense gas gathers towards the center, forming an inner and outer layered "gas-solid ring". The sand particles close to the inner wall of the sand removal cylinder 11 slide down along the inner wall of the sand removal cylinder 11 under the combined action of gravity and centrifugal force, and are finally discharged outward through the sand discharge port 13. The exhaust gas in the center flows upward and passes through the filter mechanism 2. After the exhaust gas is filtered again by the filter mechanism 2, it enters the upper part of the baffle 14 through the vertical pipe 15 and is transported to the next treatment equipment through the outlet pipe 16.

[0045] like Figures 2 to 5 As shown, the filtration mechanism 2 includes a mounting frame 21, a base plate 22, and multiple filter elements 23. The mounting frame 21 is connected to the bottom end of the vertical pipe 15. Multiple mounting ports are provided on the outside of the mounting frame 21, and the multiple filter elements 23 are installed in the multiple mounting ports respectively. The base plate 22 is connected to the bottom of the mounting frame 21 and is used to support the multiple filter elements 23. The exhaust gas can be filtered again through the multiple filter elements 23.

[0046] Continue to refer to Figures 2 to 5As shown, the filter element 23 includes a perforated plate 231, a perforated plate 232, and an elastic structure 233. The perforated plate 231 is inserted into the mounting port, and the bottom of the perforated plate 231 is inserted into the top of the base plate 22. The perforated plate 232 is slidably connected to the mounting port. The elastic structure 233 is installed on the top of the perforated plate 232, and the top of the elastic structure 233 abuts against the inner top wall of the mounting port. The elastic structure 233 is in a compressed state. The perforated plate 231 is provided with multiple through holes 1, and the perforated plate 232 is provided with multiple through holes 2. The multiple through holes 1 and multiple through holes 2 are staggered so that the overlapping part of the through holes 1 and through holes 2 forms filter holes, and the formed filter holes filter the exhaust gas again. The elastic structure 233 is a telescopic rod with a built-in spring, and the telescopic end of the telescopic rod faces upward. The bottom end of the telescopic rod is threadedly connected to the top of the perforated plate 232, and the telescopic end of the telescopic rod contacts the inner top wall of the mounting port.

[0047] like Figures 1 to 9 As shown, the perforation mechanism 3 includes a pusher 31, a striking member 32, a first drive member 33, a second drive member 34, a shielding pad 35, and a positioning member 36. The pusher 31 is installed inside the filter mechanism 2. The pusher 31 can push the perforated plate 232 upward, increasing the overlap between the first and second through holes, thereby increasing the formed filter holes to facilitate the perforation operation. The striking member 32 is connected to the pusher 31. The striking member 32 can strike the pusher 31 and generate vibration. At the same time, the pusher 31 transmits the vibration to the filter element 23 to be perforated, thereby perforating the filter holes on the filter element 23. The first drive member 33 is connected to the top of the top cover 17. The first drive member 33 can drive the pusher 31 to rotate, thereby moving the position of the pusher 31 to facilitate the perforation operation of multiple filter elements 23 in sequence. The first drive member 33 can also drive the pusher 31 to run, and the pusher 31 drives the perforated plate 232 upward. 232 moves upward, thereby increasing the size of the formed filter holes. The second driving member 34 is connected to the top of the top cover 17. The second driving member 34 can drive the striking member 32 to run, so that the striking member 32 strikes the pushing member 31 and generates vibration. The shielding pad 35 is connected to the pushing member 31. After the pushing member 31 drives the second perforated plate 232 to move upward, it can drive the shielding pad 35 to fit against the inner side of the second perforated plate 232, thereby forming a shield for the filter holes. This prevents the sand particles that are blocked in the filter holes after the filter element 23 is vibrated from entering the inner side of the filter mechanism 2, and thus prevents the sand particles that fall out of the filter holes from entering the next treatment equipment with the exhaust gas. The positioning member 36 is connected to the pushing member 31 and the bottom plate 22. The positioning member 36 can position the pushing member 31 to prevent the pushing member 31 from rotating and misaligning the filter element 23 to be vented when the first driving member 33 drives the pushing member 31 to run, thus ensuring the smooth operation of the pushing member 31.

[0048] Continue to refer to Figures 1 to 9As shown, the pushing component 31 includes a rotating rod 311, a shield 312, a guide rail 313, a moving part 314, an elastic part 315, a fixed part 316, a pushing part 317, a lifting part 318, and a pushing part 319. The rotating rod 311 is rotatably connected to the top cover 17, and the bottom end of the rotating rod 311 extends into the inside of the filter mechanism 2. The shield 312 is rotatably connected to the base plate 22. The shield 312 can shield the filter element 23 with pores to be opened, so that the exhaust gas no longer passes through the filter element 23. The bottom end of the rotating rod 311 extends into the shield 312, and the guide rail 313 connects to... On the inner top wall of the shield 312, the moving part 314 is slidably connected to the guide rail 313. The elastic part 315 is connected between the guide rail 313 and the moving part 314. The elastic part 315 is a compression spring used to drive the moving part 314 to reset. The fixed part 316 is connected to the moving part 314. The pushing part 317 is connected to the fixed part 316. Multiple lifting parts 318 are provided. The multiple lifting parts 318 are respectively connected to the perforated plate 232 in the multiple filter elements 23. The lifting part 318 is provided with an inclined surface. The pushing part 319 is connected to the bottom end of the rotating rod 311.

[0049] When the rotating rod 311 rotates clockwise, the pushing part 319 pushes the shield 312, thereby driving the shield 312 to rotate. This allows the pushing part 31 to block multiple filter elements 23 in sequence. When the rotating rod 311 rotates counterclockwise, the positioning part 36 positions the shield 312, preventing it from rotating counterclockwise. At this time, the pushing part 319 connected to the bottom of the rotating rod 311 pushes the moving part 314, so that the moving part 314, guided by the guide rail 313, moves towards the filter element 23 to be pore-reduced. The moving part 314 moves in the direction of compression and compresses the elastic part 315. At the same time, when the moving part 314 moves, it can drive the fixed part 316 and the pushing part 317 to move. The pushing part 317 pushes the lifting part 318 on the corresponding perforated plate 232 so that the pushing part 317 contacts the inclined surface of the lifting part 318 and pushes the lifting part 318 to move upward. The lifting part 318 drives the perforated plate 232 to move upward. When the perforated plate 232 moves upward, it compresses the elastic structure 233, thereby increasing the overlapping part of the through hole 1 and through hole 2, and thus increasing the formed filter hole.

[0050] Continue to refer to Figures 1 to 9As shown, the striking component 32 includes a second rotating rod 321, a third pushing part 322, a connecting arm 323, a striking part 324, a second elastic part 325, and a vertical rod 326. The first rotating rod 311 is hollow. The second rotating rod 321 is rotatably connected to the top cover 17. The bottom end of the second rotating rod 321 passes through the first rotating rod 311 and extends into the shield 312. The third pushing part 322 is connected to the bottom end of the second rotating rod 321. The connecting arm 323 is connected to the fixing part 316. The striking part 324 is inserted into the connecting arm 323 and contacts the fixed part 316. The elastic part 325 is a tension spring and is connected between the striking part 324 and the connecting arm 323. The upright 326 is connected to the striking part 324. Before the moving part 314 is pushed by the pushing part 319, the elastic part 315 is in a state of no force. At this time, the upright 326 is not located on the movement track of the pushing part 322. Within the track, when the moving part 314 is pushed by the second pushing part 319 to move towards the filter element 23 to be pored, the moving part 314 can drive the fixed part 316 to move the connecting arm 323, the striking part 324, the second elastic part 325 and the upright 326, so that the upright 326 moves into the moving track of the third pushing part 322. At this time, when the second rotating rod 321 drives the third pushing part 322 to rotate, the third pushing part 322 can push the upright 326 to move, so that the upright 326 drives the striking part 324 to move away from the fixed part 316 and stretches the second elastic part 325. After the third pushing part 322 separates from the upright 326, the second elastic part 325 drives the striking part 324 and the upright 326 to reset, so that the striking part 324 squeezes the fixed part 316 and generates vibration, thereby vibrating and pore-reducing the filter element 23 to be pore-reduced.

[0051] Continue to refer to Figures 1 to 9 As shown, the drive unit 33 includes a drive source 331 and two gears 332. The drive source 331 is connected to the top of the top cover 17. The drive source 331 is a motor with the output end facing upward. The two gears 332 are respectively connected to the rotating rod 311 and the output end of the drive source 331, and the two gears 332 are meshed. Starting the drive source 331 can drive the two gears 332 to mesh and transmit power, thereby driving the rotating rod 311 to rotate clockwise or counterclockwise.

[0052] Continue to refer to Figures 1 to 9 As shown, the second driving component 34 includes a second driving source 341 and two gears 342. The second driving source 341 is connected to the top of the top cover 17. The second driving source 341 is a motor with its output end facing upward. The two gears 342 are respectively connected to the output end of the second rotating rod 321 and the second driving source 341, and the two gears 342 are meshed. Starting the second driving source 341 can drive the two gears 342 to mesh and transmit power, thereby driving the second rotating rod 321 to rotate.

[0053] Continue to refer to Figures 1 to 9 As shown, the shielding pad 35 is connected to the side of the fixing part 316 near the filter element 23. When the fixing part 316 moves toward the corresponding filter element 23, the pushing part 317 pushes the corresponding lifting part 318, and the lifting part 318 drives the perforated plate 232 to move upward. Then, the shielding pad 35 can contact the inner side of the perforated plate 232, thereby shielding the filter holes formed by the perforated plate 232 and the perforated plate 231, preventing sand particles from passing through the filter holes and entering the next treatment device with the exhaust gas.

[0054] Continue to refer to Figures 1 to 9 As shown, the positioning component 36 includes a fixing ring 361, a positioning part 363, and an elastic part 364. The fixing ring 361 is connected to the top of the base plate 22. Multiple positioning slots 362 are provided on the inner side of the fixing ring 361, each corresponding to a multiple filter element 23. The positioning part 363 is inserted into the shielding cover 312. The elastic part 364 is a compression spring, connected between the positioning part 363 and the shielding cover 312. The positioning part 363 can be inserted into the positioning slot 362, thereby providing support for the shielding element. The cover 312 is positioned, and the positioning part 363 is provided with a second inclined surface. When the second pushing part 319 rotates clockwise and pushes the cover 312, the second inclined surface of the positioning part 363 is squeezed and can move in the direction of extending into the cover 312, so that the positioning part 363 disengages from the positioning socket 362, so that the cover 312 can rotate clockwise. When the second pushing part 319 rotates counterclockwise and pushes the moving part 314, the positioning part 363 can position and block the cover 312, preventing the cover 312 from rotating counterclockwise.

[0055] Working principle:

[0056] After passing through the inlet pipe 12, the exhaust gas enters the sand removal cylinder 11 at a certain speed along the tangential direction, forming a high-speed rotating vortex. The centrifugal force generated by the rotation causes the sand particles in the exhaust gas to move towards the inner wall of the sand removal cylinder 11, while the less dense gas gathers towards the center, forming an inner and outer layered "gas-solid ring". The sand particles close to the inner wall of the sand removal cylinder 11 slide down along the inner wall of the sand removal cylinder 11 under the combined action of gravity and centrifugal force, and are finally discharged outward through the sand discharge port 13. The exhaust gas in the center flows upward and flows through multiple filter elements 23 on the filter mechanism 2. After being filtered again by the filter holes on the multiple filter elements 23, the exhaust gas enters the upper part of the partition plate 14 through the vertical pipe 15 and is transported to the next treatment equipment through the exhaust pipe 16.

[0057] The drive source 331 is activated to drive the two gears 332 to mesh and drive, thereby driving the rotating rod 311 to rotate clockwise. When the rotating rod 311 rotates clockwise, it pushes the shield 312 through the push part 319, thereby driving the shield 312 to rotate clockwise until the shield 312 covers the filter element 23 to be poreped, so that the exhaust gas no longer passes through the filter element 23. At the same time, the positioning part 36 positions the shield 312.

[0058] The drive source 331 is activated, driving the two gears 332 to mesh and transmit power, thereby driving the rotating rod 311 to rotate counterclockwise. When the rotating rod 311 rotates counterclockwise, it blocks the shield 312 through the positioning member 36. The rotating rod 311 drives the pushing part 319 to rotate counterclockwise and pushes the moving part 314, so that the moving part 314 moves towards the filter element 23 to be de-pored under the guidance of the guide rail 313, and compresses the elastic part 315. At the same time, the moving part 314... When 14 moves, it can drive the fixed part 316 and the first push part 317 to move, and the first push part 317 pushes the lifting part 318 on the corresponding perforated plate 232 so that the first push part 317 contacts the inclined surface of the lifting part 318 and pushes the lifting part 318 to move upward. The lifting part 318 drives the second perforated plate 232 to move upward. When the second perforated plate 232 moves upward, it compresses the elastic structure 233, thereby increasing the overlapping part of the first through hole and the second through hole, and thus increasing the formed filter hole.

[0059] When the fixing part 316 moves toward the corresponding filter element 23, the pushing part 317 pushes the corresponding lifting part 318, and the lifting part 318 drives the perforated plate 232 to move upward, the shielding pad 35 contacts the inner side of the perforated plate 232, thereby shielding the filter holes formed by the perforated plate 232 and the perforated plate 231.

[0060] When the fixed part 316 moves, it drives the connecting arm 323, the striking part 324, the elastic part 325 and the upright 326 to move, so that the upright 326 moves into the movement trajectory of the pushing part 322.

[0061] The second drive source 341 drives the two gears 342 to mesh and drive the rotating rod 321 to rotate. When the rotating rod 321 rotates, the third pusher 322 rotates. The third pusher 322 can push the upright rod 326 to move, so that the upright rod 326 drives the striking part 324 to move away from the fixed part 316 and stretches the second elastic part 325. After the third pusher 322 separates from the upright rod 326, the second elastic part 325 drives the striking part 324 and the upright rod 326 to reset, so that the striking part 324 squeezes the fixed part 316 and generates vibration, thereby vibrating and opening the pores of the filter element 23 to be opened, so that the sand particles blocking the filter pores fall into the shield 312 for collection.

[0062] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A natural gas extraction waste gas treatment device, comprising a sand removal mechanism, characterized in that, It also includes a filtration mechanism and a perforation mechanism. The filtration mechanism includes multiple filter elements, including a perforated plate with multiple through holes and a perforated plate with multiple through holes. The perforated plate is mounted on the filtration mechanism, and the perforated plate is elastically connected to the filtration mechanism. The overlapping part of the through holes forms filter holes. The perforation mechanism includes a pushing component and a striking component. The pushing component includes a rotating rod, a shield, a moving part, a pushing part 1, and a pushing part 2. The rotating rod is rotatably connected to the sand removal mechanism. The shield is installed inside the filtration mechanism to shield the filter element to be perforated. The moving part is elastically connected to the shield. The pushing part 1 is connected to the moving part, and the pushing part 2 is connected to the rotating rod. Rotating the rotating rod 1 clockwise can drive the pushing part 2 to push the shield to rotate. Rotating the rotating rod 1 counterclockwise can drive the pushing part 2 to push the moving part to move, so that the pushing part 1 pushes the perforated plate 2 upward and enlarges the filter holes. The striking component is connected inside the shield and can generate vibration. The pusher also includes a guide rail, an elastic part 1, a fixed part, and a lifting part. The guide rail is connected inside the shield, the moving part is limited and slidably connected inside the guide rail, the elastic part 1 is connected between the moving part and the guide rail, the fixed part is connected to the moving part, and a shielding pad is connected to the fixed part; the pusher 1 is connected to the fixed part, and multiple lifting parts are provided. The multiple lifting parts are respectively connected to the perforated plate 2 on multiple filter elements, and the lifting part is provided with an inclined surface 1. The striking component includes a second rotating rod, a third pushing part, a connecting arm, a striking part, a second elastic part, and a vertical rod. The second rotating rod is rotatably connected to the sand removal mechanism and passes through the first rotating rod. The third pushing part is connected to the bottom end of the second rotating rod. The connecting arm is connected to the fixed part. The striking part is inserted into the connecting arm. The second elastic part is connected between the striking part and the connecting arm. The vertical rod is connected to the striking part. The pore-reducing mechanism also includes a positioning component, which includes a fixing ring, a positioning part, and an elastic part. The fixing ring is connected to the base plate, and multiple positioning ports are provided on the inner side of the fixing ring. The multiple positioning ports are respectively set to correspond to multiple filter elements. The positioning part is inserted into the shielding cover. The elastic part is connected between the positioning part and the shielding cover. The positioning part can be inserted into the positioning port. The positioning part is provided with a slope.

2. The natural gas extraction waste gas treatment device according to claim 1, characterized in that, The filtration mechanism also includes a mounting frame and a base plate. The mounting frame is connected inside the sand removal mechanism and has multiple mounting ports. Multiple filter elements are connected to the multiple mounting ports respectively. The base plate is connected to the bottom of the mounting frame and is used to support the multiple filter elements.

3. The natural gas extraction waste gas treatment device according to claim 2, characterized in that, The filter element also includes an elastic structure. One perforated plate is inserted into the mounting port on the mounting frame, and the bottom of the one perforated plate is inserted into the bottom plate. The other perforated plate is slidably connected to the mounting port on the mounting frame. The elastic structure is installed on the top of the other perforated plate, and the top of the elastic structure abuts against the inner top wall of the mounting port. The elastic structure is in a compressed state.

4. The natural gas extraction waste gas treatment device according to claim 1, characterized in that, The pore-removing mechanism also includes a drive component, which includes a drive source and two gears. The drive source is connected to the sand removal mechanism, and the two gears are respectively connected to the output end of the rotating rod and the drive source. The two gears are meshed together.

5. The natural gas extraction waste gas treatment device according to claim 1, characterized in that, It also includes a second drive component, which includes a second drive source and two gears. The second drive source is connected to the sand removal mechanism, and the two gears are respectively connected to the second rotating rod and the output end of the second drive source. The two gears are meshed together.

6. The natural gas extraction waste gas treatment device according to claim 3, characterized in that, The elastic structure is a telescopic rod with a built-in spring, with the telescopic end of the telescopic rod facing upwards. The bottom end of the telescopic rod is threaded to the top of the second orifice plate, and the telescopic end of the telescopic rod contacts the inner top wall of the mounting port.

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