A gate valve for fracturing manifold with the effect of preventing impurity accumulation

Abstract

The present invention relates to the technical field of fracturing manifolds, and discloses a gate valve for a fracturing manifold with an anti-impurity accumulation effect, comprising a valve body and a gate body, wherein the top and bottom of the valve body are respectively detachably mounted with an upper valve seat and a lower valve seat by screws, wherein the interior of the valve body is provided with a connected fluid channel and a middle inner cavity, wherein the fluid channel can be connected with the inner channel opened in the gate body, and both sides of the inner wall of the middle inner cavity are fixedly connected with positioning guide rails that match the positioning guide grooves opened on both sides of the gate body. The present invention realizes multiple processing operations of preliminary cleaning of the sealing chamber and the gate body with a cleaning agent, secondary cleaning with clean water, and dewatering with compressed air through a multi-stage processing component, thereby making the cleaning more thorough, and release angles are provided at the edges of both ends of the inner channel of the gate body to effectively intercept particulate impurities and prevent them from entering the sealing contact area.

Description

Technical Field

[0001] The present invention relates to the technical field of fracturing manifolds, in particular to a gate valve for a fracturing manifold with the effect of preventing impurities from silting up. Background Art

[0002] In the field of oil and gas extraction, fracturing operations are an important measure to increase production. As a key component in fracturing operations, the fracturing manifold connects the fracturing equipment with the wellbore and transports high-pressure, high-sand fracturing fluid. The gate valve is the control element in the fracturing manifold, and its performance directly affects the safety and efficiency of the fracturing operation.

[0003] The existing gate valves for fracturing manifolds still have the following problems in actual use:

[0004] 1. After long-term use, impurities accumulate between the gate and the valve seat, and the impurities between the two are easily squeezed into the contact surface, which will cause the wear of the gate and valve seat sealing surface to increase. As the number of uses increases, the sealing performance gradually decreases, leakage occurs, and affects normal use;

[0005] 2. Although there are some improvement measures for gate valve anti-siltation, most of them are not effective. Some improvement plans simply add flushing devices, but the flushing effect is limited and cannot completely remove the accumulated impurities. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the present invention provides a gate valve for a fracturing manifold with an anti-impurity accumulation effect, which is mainly used to solve the problem that impurities accumulate between the gate plate and the valve seat after long-term use, and the impurities accumulated between the two are easily squeezed into the contact surface, which will cause aggravated wear of the sealing surface of the gate plate and the valve seat. As the number of uses increases, the sealing performance gradually decreases, and leakage occurs, affecting normal use. Although there are some improvement measures for the prevention of gate valve accumulation, most of them are not effective. Some improvement schemes simply add a flushing device, but the flushing effect is limited and the accumulated impurities cannot be completely removed.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A gate valve for a fracturing manifold with an anti-impurity accumulation effect comprises a valve body and a gate body, wherein the top and bottom of the valve body are respectively detachably mounted with an upper valve seat and a lower valve seat by screws, a connected fluid channel and a middle inner cavity are provided inside the valve body, the fluid channel can be connected with the inner channel provided in the gate body, both sides of the inner wall of the middle inner cavity are fixedly connected with positioning guide rails which match the positioning guide grooves provided on both sides of the gate body, an outer cavity is provided on one end of the upper valve seat and the lower valve seat close to the valve body, a sealed chamber is formed between the outer cavity and the middle inner cavity, an embedded sealing groove is provided on both sides of the gate body, and the bottom of the embedded sealing groove is opened. A sewage drain groove is provided, and release angles with a multi-level slope structure are provided at the edges of both ends of the inner channel. A sealing sleeve is provided in the fluid channel for sealing in contact with both sides of the gate body, and an opening and closing component for pulling the gate body to move is provided between the upper valve seat and the lower valve seat. A dredging component for cleaning the gate body is provided inside the valve body, and a multi-level processing component for performing multiple cleanings on the gate body is provided on the outside of the valve body. The multi-level processing component is connected to the dredging component through a diversion channel opened inside the valve body. The inner wall of the bottom of the outer cavity of the lower valve seat bulges upward to form a boss, and a sewage drain channel connected to the lowest point of the outer cavity is provided on one side of the lower valve seat.

[0009] As a further solution of the present invention, the opening and closing assembly includes a threaded barrel fixedly connected to the top of the upper valve seat, a threaded rod is connected to the inner thread of the threaded barrel, the top and bottom of the gate body are respectively provided with an upper pull rod and a lower pull rod passing through the upper valve seat and the lower valve seat, the top of the upper pull rod is rotatably connected to the bottom end of the threaded rod, and the connection positions of the upper pull rod, the lower pull rod and the upper valve seat and the lower valve seat are all provided with dynamic seals, and the top of the threaded rod is fixedly connected to a turntable that drives the threaded rod to rotate around its axis.

[0010] As a further solution of the present invention, the dredging assembly includes an upper fixing frame fixedly connected to the inner walls on both sides of the valve body near the top position, the end of the upper fixing frame is fixedly connected to the upper nozzle, the tail end of the upper nozzle is connected to the upper connecting pipe, one end of the upper connecting pipe is connected to the diversion channel through the upper connecting head, and the inner walls on both sides of the valve body near the bottom position are provided with side embedded grooves, the side embedded grooves are penetrated by an external connecting rod, and the circumferential outer side of the external connecting rod is fixedly connected to a limiting ring that cooperates with the side embedded groove, and a limiting seat for blocking the position of the limiting ring is fixedly connected in the side embedded groove, and a return spring is provided between the limit seat and the limit ring, a rotating ring is provided between the limit ring and the return spring, and a sealing The second dynamic seal of the seal, one end of the outer connecting rod is provided with a pin barrel, the pin barrel is inserted with a shaft rod, the outer side of the shaft rod is provided with a plurality of key strips that cooperate with the pin barrel, one end of the shaft rod is fixedly connected to the inner wall of the pin barrel with a compression spring, the other end of the shaft rod is fixedly connected to two scraper arms, the end of the scraper arm is fixedly connected to a scraper that can contact the release angle, the scraper is a profile structure of the release angle, the end of the outer connecting rod is fixedly connected to two oppositely distributed support arms, the end of the support arm is fixedly connected to a lower nozzle, the tail ends of the two lower nozzles are connected with a lower connecting pipe, the end of the lower connecting pipe is connected to the diversion channel through a lower connecting head, and both sides of the valve body are provided with a double-acting drive component that drives the outer connecting rod to complete the dual action of lateral movement and rotation.

[0011] As a further solution of the present invention, the multi-stage treatment component includes a diverter cover fixedly connected to the outside of the valve body, a flow regulating disk is rotatably connected in the diverter cover, a confluence cavity is formed between the stepped surface of the flow regulating disk and the diverter cover, a guide groove connected to the confluence cavity is provided at the bottom of the diverter cover, a side connector connected to the diverter channel is fixedly connected in the guide groove, and a cleaning agent connection valve head for preliminary cleaning of the sealed chamber and the gate body, a clean water connection valve head for secondary cleaning, and an air connection valve for dewatering are plugged and fixed on one side of the diverter cover. Connecting valve head, one side of the flow regulating disk is provided with a through hole which can be connected with the cleaning agent connecting valve head, the clean water connecting valve head and the gas connecting valve head, the outer side of the diverter cover is fixedly connected with a double-axis synchronous motor, one end of the output shaft of the double-axis synchronous motor passes through the diverter cover and is fixed to the flow regulating disk, the other end of the output shaft of the double-axis synchronous motor is fixedly connected with a code disk, the outer side of the diverter cover is fixedly connected with a side bracket, one side of the side bracket is fixedly connected with a light detector which matches the code disk, and a dust cover is provided on one side of the diverter cover.

[0012] As a further solution of the present invention, the double-acting drive assembly is a rocker arm fixedly connected to the end of the outer connecting rod passing through the valve body.

[0013] As a further solution of the present invention, the double-acting drive assembly includes a mounting slide fixedly connected to the outside of the valve body, a rack being slidably connected to one side of the mounting slide, the outer connecting rod passing through the end of the valve body is fixedly connected to a driving gear disk that meshes with the rack, the width of the driving gear disk is much larger than the width of the rack, and a limiting disk is fixedly connected to the outer side of the circumference of the outer connecting rod, and a plurality of equally distributed mounting grooves are provided on one side of the limiting disk, and a ball is rotatably connected in the mounting groove, and a limiting mechanism for positioning the position of the driving gear disk is provided on the outer side of the valve body, and a driving mechanism for driving the rack to move back and forth along the mounting slide is provided on the outer side of the valve body.

[0014] As a further solution of the present invention, the driving mechanism includes a reciprocating screw rod rotatably connected to the inside of the mounting slide through a bearing, a slider fixedly connected to one side of the rack and cooperating with a bidirectional spiral groove opened on the outside of the reciprocating screw rod, and a driving motor is provided on the outside of the valve body for driving the reciprocating screw rod to rotate in the opposite direction along the axis.

[0015] As a further solution of the present invention, the driving mechanism includes a reciprocating pull frame fixedly connected between the ends of the two racks, and a gap is left between the reciprocating pull frame and the valve body.

[0016] As a further solution of the present invention, the limiting mechanism includes a rotating shaft rotatably connected to the outside of the valve body, an eccentric wheel is fixedly connected to one side of the rotating shaft, a lower snap-on socket which is shaped like a limiting disk is provided at the bottom of the eccentric wheel, and a pressing disk is fixedly connected to one side of the driving gear disk.

[0017] As a further solution of the present invention, the limiting mechanism includes an upper mounting frame fixedly connected to the top of the rack, a trapezoidal groove is opened on one side of the upper mounting frame, a sliding bar is inserted into the outer side of the valve body, and the end of the sliding bar is provided with a trapezoidal force-bearing end matching the trapezoidal groove, and the bottom of the sliding bar is fixedly connected to a block seat for limiting the limit plate.

[0018] Compared with the prior art, the present invention provides a gate valve for a fracturing manifold that has the effect of preventing impurity accumulation, and has the following beneficial effects:

[0019] 1. The present invention uses a multi-stage treatment component and a silt removal component to effectively clean the embedded sealing grooves on both sides of the gate body that are moved to the upper side.

[0020] 2. The present invention provides release angles at both end edges of the inner channel of the gate body. The release angles are multi-level slope structures. The first level is a diversion slope with an angle of 15°, which is used to guide the fluid to carry impurities. The second level is a gentle slope with an angle of 10°, which is used to form an impurity buffer area. An annular microgroove is provided between the diversion slope and the gentle slope to intercept particulate impurities and prevent them from entering the sealing contact area.

[0021] 3. The present invention opens the inner channel at the lower part of the gate body, which facilitates the effective cleaning and treatment of the trapped particulate impurities through the dredging component and the multi-stage treatment component.

[0022] 4. The present invention performs emptying by opening the sewage discharge channel, and due to the action of the boss at the bottom of the outer cavity of the lower valve seat, the impurities and fluid in the outer cavity are completely discharged.

[0023] 5. The present invention realizes controllable rotation angle of the flow regulating disk by using the code disk and the light detector in combination.

[0024] 6. The present invention uses a multi-stage treatment component to achieve multiple treatment operations of preliminary cleaning of the sealed chamber and the gate body with a cleaning agent, secondary cleaning with clean water, and dehydration treatment with compressed air, so that the cleaning is more thorough.

[0025] 7. The present invention completes the position limitation of the external connecting rod by using the rotating shaft, eccentric wheel and limiting plate in coordination, thereby facilitating the staff to simultaneously rotate the external connecting rods on both sides of the gate valve in both directions by means of the reciprocating pull frame.

[0026] 8. The present invention uses the trapezoidal notch and the trapezoidal force-bearing end in combination, eliminating the need to manually press the limit plate to limit the position, while also enabling the outer connecting rod to move inward. During this process, the outer connecting rod can still rotate forward and backward, making operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the front three-dimensional structure of a gate valve for a fracturing manifold with an anti-impurity accumulation effect proposed by the present invention;

[0028] Figure 2 This is a schematic diagram of the rear three-dimensional structure of a gate valve for a fracturing manifold with an anti-impurity accumulation effect proposed by the present invention;

[0029] Figure 3 This is a schematic diagram of a gate valve for a fracturing manifold with an anti-impurity accumulation effect proposed by the present invention, with the gate body in an open state;

[0030] Figure 4 This is a schematic diagram of the gate body of a gate valve for a fracturing manifold with an anti-impurity accumulation effect proposed by the present invention in a closed state;

[0031] Figure 5 The present invention proposes a gate valve for fracturing manifold with the effect of preventing impurities from silting up. Figure 4 A schematic diagram of the enlarged structure of part A;

[0032] Figure 6 This is a schematic diagram of the gate body structure of a gate valve for a fracturing manifold with an anti-impurity accumulation effect proposed by the present invention;

[0033] Figure 7 This is a schematic structural diagram of a desilting component of a gate valve for a fracturing manifold with an anti-impurity accumulation effect proposed by the present invention;

[0034] Figure 8 The present invention proposes a gate valve for fracturing manifold with the effect of preventing impurities from silting up. Figure 7 A schematic diagram of a partial cross-sectional structure;

[0035] Figure 9 This is a schematic diagram of the cross-sectional structure of a gate valve for a fracturing manifold with an anti-impurity accumulation effect proposed by the present invention;

[0036] Figure 10 This is a schematic diagram of the internal structure of a multi-stage processing component of a gate valve for a fracturing manifold with an anti-impurity accumulation effect proposed by the present invention;

[0037] Figure 11 This is a schematic diagram of the structure of a multi-stage processing component of a gate valve for a fracturing manifold with an anti-impurity accumulation effect proposed by the present invention;

[0038] Figure 12 This is a schematic diagram of the structure of a double-acting drive assembly of a gate valve for a fracturing manifold with an anti-impurity accumulation effect proposed by the present invention;

[0039] Figure 13 This is a schematic diagram of the reciprocating pull frame structure of a gate valve for a fracturing manifold with an anti-impurity accumulation effect proposed by the present invention;

[0040] Figure 14 This is a schematic diagram of the upper mounting frame structure of a gate valve for a fracturing manifold with an anti-impurity accumulation effect proposed by the present invention;

[0041] Figure 15 The present invention proposes a gate valve for fracturing manifold with the effect of preventing impurities from silting up. Figure 14 Schematic diagram of the local enlarged structure.

[0042] Figure: 1, valve body; 2, threaded barrel; 3, threaded rod; 4, multi-stage treatment assembly; 5, gate body; 6, desilting assembly; 7, lower tie rod; 8, dynamic seal 1; 9, sealing sleeve; 10, upper tie rod; 11, positioning guide rail; 12, middle inner cavity; 13, double-acting drive assembly; 14, fluid channel;

[0043] 101. Upper valve seat; 102. Lower valve seat; 103. Boss; 104. Drain channel; 105. External cavity;

[0044] 401, diverter cover; 402, dust cover; 403, diverter channel; 404, dual-axle synchronous motor; 405, flow regulating plate; 406, flow guide groove; 407, confluence chamber; 408, through hole; 409, cleaning agent connection valve head; 410, clean water connection valve head; 411, gas connection valve head; 412, encoder; 413, light detector; 414, side bracket; 415, side connector;

[0045] 501, embedded sealing groove; 502, release angle; 503, drainage chute; 504, inner channel; 505, positioning guide groove;

[0046] 601, upper fixing frame; 602, upper connecting head; 603, upper nozzle; 604, upper connecting pipe; 605, outer connecting rod; 606, limit seat; 607, lower connecting pipe; 608, lower nozzle; 609, lower connecting head; 610, shaft; 611, scraper; 612, scraper arm; 613, return spring; 614, limit ring; 615, rotating ring; 616, compression spring; 617, pin barrel; 618, key bar; 619, dynamic seal 2; 620, side embedded groove;

[0047] 1301. Rocker arm; 1302. Driving gear plate; 1303. Rack; 1304. Slider; 1305. Mounting slide; 1306. Driving motor; 1307. Reciprocating screw; 1308. Limiting plate; 1309. Mounting slot; 1310. Ball bearing; 1311. Lower snap fit; 1312. Eccentric wheel; 1313. Rotating shaft; 1314. Reciprocating pull frame; 1315. Upper mounting frame; 1316. Trapezoidal notch; 1317. Trapezoidal force-bearing end; 1318. Block seat; 1319. Slider; 1320. Pressing plate. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0050] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0051] Reference Figures 1-10, a fracturing manifold gate valve with an anti-impurity accumulation effect, includes a valve body 1 and a gate body 5, the top and bottom of the valve body 1 are respectively detachably mounted with an upper valve seat 101 and a lower valve seat 102 by screws, a fluid channel 14 and a middle inner cavity 12 are provided in the interior of the valve body 1, the fluid channel 14 can be connected to the inner channel 504 provided in the gate body 5, and the inner walls on both sides of the middle inner cavity 12 are fixed with positioning guide rails 11 that match the positioning guide grooves 505 provided on both sides of the gate body 5 by bolts, an outer cavity 105 is provided on one end of the upper valve seat 101 and the lower valve seat 102 close to the valve body 1, a sealed chamber is formed between the outer cavity 105 and the middle inner cavity 12, and an embedded sealing groove 501 is provided on both sides of the gate body 5, and the bottom of the embedded sealing groove 501 is opened. A drain groove 503 is provided, which is convenient for guiding the flow in the embedded sealing groove 501. Release angles 502 are provided at the edges of both ends of the inner channel 504. A sealing sleeve 9 is provided in the fluid channel 14 to seal with both sides of the gate body 5. An opening and closing component for pulling the gate body 5 to move is provided between the upper valve seat 101 and the lower valve seat 102. The opening and closing component includes a threaded cylinder 2 welded to the top of the upper valve seat 101. The threaded cylinder 2 is internally threaded with a threaded rod 3. The top and bottom of the gate body 5 are respectively provided with an upper pull rod 10 and a lower pull rod 7 that pass through the upper valve seat 101 and the lower valve seat 102. The top of the upper pull rod 10 is rotatably connected to the bottom end of the threaded rod 3. The connection positions of the upper pull rod 10, the lower pull rod 7 and the upper valve seat 101 and the lower valve seat 102 are provided with Dynamic seal 8, the top end of the threaded rod 3 is fixed by bolts with a turntable that drives the threaded rod 3 to rotate around its axis. By rotating the turntable, the turntable drives the threaded rod 3 to rotate. At this time, the threaded rod 3 moves vertically along the threaded cylinder 2. At this time, the threaded rod 3 pulls the gate body 5 through the upper pull rod 10 to seal or unblock. The interior of the valve body 1 is provided with a dredging component 6 for cleaning the gate body 5, and the outside of the valve body 1 is provided with a multi-stage processing component 4 for performing multiple cleanings on the gate body 5. The multi-stage processing component 4 is connected to the dredging component 6 through the diversion channel 403 opened inside the valve body 1. The inner wall of the bottom of the outer cavity 105 of the lower valve seat 102 protrudes upward and forms a boss 103. One side of the lower valve seat 102 is provided with a channel connected to the lowest point of the outer cavity 105 The sewage channel 104 is sealed by screws during the use of the gate valve. When the gate valve seals the fluid channel 14 through the gate body 5, impurities accumulate on the side of the embedded sealing groove 501. When the gate body 5 is pulled up by the opening and closing component, it will briefly intersect with the inner channel 504. The accumulated impurities are driven by the fluid and gathered into the outer cavity 105 of the lower valve seat 102. At this time, the sewage channel 104 can be opened for emptying. Due to the action of the boss 103 at the bottom of the outer cavity 105 of the lower valve seat 102, the impurities and fluid in the outer cavity 105 are completely discharged. At this time, the embedded sealing grooves 501 on both sides of the upper gate body 5 can be effectively cleaned by the multi-stage processing component 4 and the silt cleaning component 6.When the sealing sleeve 9 switches from the state of being sealed in contact with the embedded sealing groove 501 opened with the gate body 5 to the state of being connected with the inner channel 504, or when the state of being connected with the inner channel 504 switches to the state of being sealed in contact with the embedded sealing groove 501 opened with the gate body 5, the impurities accumulated between the two are easily squeezed into the space between the sealing sleeve 9 and the embedded sealing groove 501, which not only affects the sealing effect of the gate body 5, but also easily causes irreversible loss of the contact surface between the gate body 5 and the sealing sleeve 9. Therefore, release angles 502 are provided at the edges of both ends of the inner channel 504 of the gate body 5. The release angles 502 It has a multi-level slope structure. The first level is a diversion slope with a 15° angle, used to guide the fluid carrying impurities. The second level is a gentle slope with a 10° angle, used to form an impurity buffer area. Annular microgrooves are set between the diversion slope and the gentle slope to intercept particulate impurities and prevent them from entering the sealing contact area. When the gate body 5 blocks the fluid channel 14, the inner channel 504 and the release angle 502 are exposed. Therefore, the silt removal component 6 and the multi-stage treatment component 4 effectively clean the trapped particulate impurities, and the treated sewage is discharged through the sewage channel 104.

[0052] The dredging assembly 6 in the present invention includes an upper fixing frame 601 fixed on the inner walls on both sides of the valve body 1 near the top position by bolts, and the end of the upper fixing frame 601 is fixed with an upper nozzle 603 by bolts, and the tail end of the upper nozzle 603 is connected with an upper connecting pipe 604, and one end of the upper connecting pipe 604 is connected with the diversion channel 403 through an upper connector 602. Side embedded grooves 620 are provided on the inner walls on both sides of the valve body 1 near the bottom position, and an external connecting rod 605 passes through the side embedded groove 620. A limiting ring 614 that cooperates with the side embedded groove 620 is fixed to the outer side of the circumference of the external connecting rod 605 by bolts, and a limiting seat 606 that blocks the position of the limiting ring 614 is fixed by bolts in the side embedded groove 620, and there is a limit between the limit seat 606 and the limiting ring 614. A return spring 613 is provided, a rotating ring 615 is provided between the limiting ring 614 and the return spring 613, a dynamic seal 619 for sealing is provided between the limiting seat 606 and the outer connecting rod 605, a pin barrel 617 is provided at one end of the outer connecting rod 605, a shaft rod 610 is inserted into the pin barrel 617, a plurality of key strips 618 that cooperate with the pin barrel 617 are provided on the outside of the shaft rod 610, one end of the shaft rod 610 and the inner wall of the pin barrel 617 are fixed with a compression spring 616 by bolts, and the other end of the shaft rod 610 is fixed with two scraper arms 612 by bolts, and the end of the scraper arm 612 is fixed with a scraper 611 that can contact the release angle 502 by bolts, and the scraper 611 is a contoured structure of the release angle 502, and the end of the outer connecting rod 605 is welded with an opposing Two arms are distributed, and the ends of the arms are fixed with lower nozzles 608 by bolts. The tail ends of the two lower nozzles 608 are connected with a lower connecting pipe 607. The end of the lower connecting pipe 607 is connected to the diversion channel 403 through the lower connector 609. Both sides of the valve body 1 are provided with a double-acting drive component 13 that drives the external connecting rod 605 to complete the dual action of lateral movement and rotation. The double-acting drive component 13 is a rocker arm 1301 fixed to the external connecting rod 605 through the end of the valve body 1 by bolts. When cleaning the embedded sealing groove 501 of the gate body 5, the upper nozzle 603 and the lower nozzle 608 are connected through the multi-stage processing component 4 to perform triple cleaning operations of spraying liquid, spraying water and spraying air, and the release angle 502 opened in the inner channel 504 of the gate body 5 is cleaned. When the rocker arm 1301 is in the open position, the staff needs to manually press the two rocker arms 1301. The rocker arm 1301 is subjected to force so that the outer connecting rod 605 drives the scraper arm 612 to move inward until the scraper 611 set at the end of the scraper arm 612 contacts the release angle 502. At this time, under the action of the compression spring 616, the scraper 611 is in elastic contact with the release angle 502, effectively protecting the scraper 611. Then the rocker arm 1301 is swung left and right. At this time, the outer connecting rod 605 drives the two scraper arms 612 and the scraper 611 to rotate back and forth through the key bar 618. That is, when the swing amplitude of the rocker arm 1301 exceeds 180 degrees, the two scrapers 611 can completely clean the release angle 502. At the same time, the lower nozzle 608 sprays liquid, water and air on the release angle 502 in turn.This helps to improve the cleanliness of the release corner 502.

[0053] In the present invention, the multi-stage treatment component 4 includes a diverter cover 401 fixed to the outside of the valve body 1 by bolts, and a flow regulating disk 405 is rotatably connected in the diverter cover 401, and a confluence cavity 407 is formed between the stepped surface of the flow regulating disk 405 and the diverter cover 401. A guide groove 406 communicating with the confluence cavity 407 is provided at the bottom of the diverter cover 401, and a side connector 415 connected to the diverter channel 403 is fixed in the guide groove 406 by bolts. A cleaning agent connection valve head 409 for preliminary cleaning of the sealed chamber and the gate body 5, a clean water connection valve head 410 for secondary cleaning, and a gas connection valve head 411 for dewatering are plugged and fixed on one side of the diverter cover 401. A valve head 409 that can be connected to the cleaning agent, a clean water connection valve head 410 for secondary cleaning, and a gas connection valve head 411 for dewatering are provided on one side of the flow regulating disk 405. The through hole 408 is connected to the head 410 and the gas connection valve head 411, and the outer side of the diverter cover 401 is fixed with a double-axis synchronous motor 404 by bolts. One end of the output shaft of the double-axis synchronous motor 404 passes through the diverter cover 401 and is fixed to the flow regulating disk 405, and the other end of the output shaft of the double-axis synchronous motor 404 is fixed with a code disk 412 by bolts. The outer side of the diverter cover 401 is fixed with a side bracket 414 by bolts, and one side of the side bracket 414 is fixed with a light detector 413 that matches the code disk 412 by bolts. A dust cover 402 is provided on one side of the diverter cover 401, the cleaning agent connection valve head 409, the clean water connection valve head 410 and the gas connection valve head 411 are connected to the external cleaning agent pipeline, the clean water pipeline and the gas pipeline respectively, and the double-axis The synchronous motor 404 rotates to drive the flow regulating disc 405 and the code disc 412 to rotate synchronously. At this time, the code disc 412 and the light detector 413 are used in conjunction with each other to realize the controllable rotation angle of the flow regulating disc 405. Therefore, when in use, the counterclockwise rotation of the double-axis synchronous motor 404 drives the flow regulating disc 405 to rotate counterclockwise. When the through hole 408 of the flow regulating disc 405 is connected with the cleaning agent connecting valve head 409, the cleaning agent in the external cleaning agent pipeline flows into the confluence cavity 407 through the through hole 408, and enters the diversion channel 403 in the valve body 1 from the guide groove 406 and the side connector 415, and then enters the upper nozzle 603 through the upper connector 602, the upper connecting pipe 604 and the lower connector 609, the lower connecting pipe 607 respectively. and the lower nozzle 608 and sprayed out. At this time, the double-axis synchronous motor 404 stops for 5s and then continues to rotate counterclockwise until the through hole 408 of the flow regulating disk 405 is connected with the clean water connecting valve head 410, and the clean water enters the upper nozzle 603 and the lower nozzle 608 from the above-mentioned flow channel and sprays out, and the clean water cleaning operation is performed. At this time, the double-axis synchronous motor 404 stops for 15s and then continues to rotate counterclockwise until the through hole 408 of the flow regulating disk 405 is connected with the air connecting valve head 411, and the compressed air enters the upper nozzle 603 and the lower nozzle 608 from the above-mentioned flow channel and sprays out, and the air water stain removal operation is performed. At this time, the double-axis synchronous motor 404 stops for 30s and then continues to rotate counterclockwise until it is reset, and a cleaning operation is completed.

[0054] The present invention is divided into the following steps when used:

[0055] S1: Figure 3 Taking the position state of the gate body 5 as an example, first, by rotating the turntable, the turntable drives the threaded rod 3 to rotate. At this time, the threaded rod 3 moves vertically downward along the threaded cylinder 2. At this time, the threaded rod 3 pulls the gate body 5 through the upper pull rod 10 to complete the blocking action;

[0056] S2: Then the cleaning agent connecting valve head 409, the clean water connecting valve head 410 and the gas connecting valve head 411 are connected to the external cleaning agent pipeline, the clean water pipeline and the gas pipeline respectively, and the double-axis synchronous motor 404 rotates to drive the flow regulating disk 405 and the code disk 412 to rotate synchronously. At this time, the code disk 412 and the light detector 413 are used in conjunction to realize the controllable rotation angle of the flow regulating disk 405. Therefore, when in use, the double-axis synchronous motor 404 rotates counterclockwise to drive the flow regulating disk 405 to rotate synchronously. The disc 405 rotates counterclockwise. When the through hole 408 of the flow regulating disc 405 is connected to the cleaning agent connecting valve head 409, the cleaning agent in the external cleaning agent pipeline flows into the confluence chamber 407 through the through hole 408, and enters the diversion channel 403 in the valve body 1 through the guide groove 406 and the side connector 415. Then, the cleaning agent passes through the upper connector 602, the upper connecting pipe 604, the lower connector 609, and the lower connecting pipe 607, respectively, and enters the upper nozzle 603 and the lower nozzle 608 to be sprayed out.

[0057] S3: At the same time, the staff manually presses the two rocker arms 1301. The rocker arms 1301 are subjected to force, causing the external connecting rod 605 to drive the scraper arm 612 to move inward until the scraper 611 provided at the end of the scraper arm 612 contacts the release angle 502. At this time, under the action of the compression spring 616, the scraper 611 and the release angle 502 are in elastic contact, effectively protecting the scraper 611. The rocker arm 1301 is then swung left and right. At this time, the external connecting rod 605 drives the two scraper arms 612 and the scraper 611 to rotate back and forth through the key bar 618. That is, when the swing amplitude of the rocker arm 1301 exceeds 180°, the two scrapers 611 can completely clean the release angle 502.

[0058] S4: At this time, the double-axis synchronous motor 404 stops for 5s and then continues to rotate counterclockwise until the through hole 408 of the flow regulating disk 405 is connected with the clean water connecting valve head 410, and the clean water enters the upper nozzle 603 and the lower nozzle 608 from the above-mentioned flow channel and is sprayed out to perform the clean water cleaning operation. At this time, the double-axis synchronous motor 404 stops for 15s and then continues to rotate counterclockwise until the through hole 408 of the flow regulating disk 405 is connected with the air connecting valve head 411, and the compressed air enters the upper nozzle 603 and the lower nozzle 608 from the above-mentioned flow channel and is sprayed out to perform the air dewatering operation. During the air dewatering operation, the scraper 611 no longer scrapes the release angle 502. At this time, the double-axis synchronous motor 404 stops for 30s and then continues to rotate counterclockwise until it resets. At this point, a cleaning operation is completed, and the sewage and compressed air are discharged through the sewage discharge channel 104;

[0059] S5: When the gate valve is opened, the turntable rotates in the opposite direction, which drives the threaded rod 3 to rotate in the opposite direction. At this time, the threaded rod 3 moves vertically upward along the threaded barrel 2. At this time, the threaded rod 3 pulls the gate body 5 through the upper pull rod 10 to complete the docking action between the inner channel 504 and the fluid channel 14;

[0060] S6: During the process of pulling the gate body 5 upward, the fluid channel 14 will briefly intersect with the inner channel 504. Impurities accumulated on the side of the embedded sealing groove 501 will be carried by the fluid and gathered into the outer cavity 105 of the lower valve seat 102. At this time, the sewage channel 104 can be opened for emptying. Due to the action of the boss 103 at the bottom of the outer cavity 105 of the lower valve seat 102, the impurities and fluid in the outer cavity 105 are completely discharged.

[0061] S7: Then just repeat the operation of S4, and use the upper nozzle 603 to perform multi-stage cleaning treatment on the embedded sealing grooves 501 on both sides of the gate body 5. In this way, not only impurities are removed, but also the service life of the gate valve is effectively improved. Example 1

[0062] Since the staff needs to manually press the outer connecting rod 605 and then swing the outer connecting rod 605 through the rocker arm 1301, the operation time is long and the labor intensity is high. In order to solve the above problem, first, the slide 1305 is fixed on the outside of the valve body 1 by bolts. One side of the slide 1305 is slidably connected to the rack 1303. The end of the outer connecting rod 605 passes through the valve body 1 and is fixed by bolts with a driving gear disc 1302 that meshes with the rack 1303. The driving gear disc 130 The width of the outer connecting rod 605 is much larger than the width of the rack 1303. A limit plate 1308 is fixed to the outer circumference of the outer connecting rod 605 by bolts. Then, a reciprocating pull frame 1314 is fixed between the ends of the two racks 1303 by bolts, and a gap is left between the reciprocating pull frame 1314 and the valve body 1. The outer side of the valve body 1 is rotatably connected to a rotating shaft 1313. An eccentric wheel 1312 is fixed to one side of the rotating shaft 1313 by bolts. The bottom of the eccentric wheel 1312 is provided with a limit plate 1308 imitating the valve body 1. The lower bayonet 1311 is opened in the shape of a cam, and a pressing plate 1320 is fixed to one side of the driving gear plate 1302 by bolts. Therefore, the rotating shaft 1313 can be rotated to make the rotating shaft 1313 drive the eccentric wheel 1312 to turn upward 180 degrees, and then the pressing plate 1320 can be pressed by hand to make the pressing plate 1320 driven by force to drive the outer connecting rod 605 to move inward and move the limit plate 1308 to the specified position. At this time, the rotating shaft 1313 is rotated in the opposite direction to reset, so that the eccentric wheel 1 312 limits the limit plate 1308 through the opened lower bayonet 1311. At this time, since the width of the driving gear plate 1302 is much larger than the width of the rack 1303, the driving gear plate 1302 is always engaged with the rack 1303. Then, by pulling and pressing the reciprocating pull frame 1314, the two racks 1303 are driven to slide along the mounting slide 1305 at the same time. The rack 1303 swings left and right, causing the driving gear plate 1302 to drive the external connecting rod 605 to rotate forward and reverse, which is more convenient.

[0063] Since the limit plate 1308 has a certain friction with the lower snap-on socket 1311 when rotating, a plurality of equally spaced mounting grooves 1309 are provided on one side of the limit plate 1308, and a ball bearing 1310 is rotatably connected in the mounting groove 1309. At this time, the ball bearing 1310 contacts the lower snap-on socket 1311, thereby effectively reducing the friction between the limit plate 1308 and the lower snap-on socket 1311 when rotating, making it easier to pull and press.

[0064] And electric operation can be used to replace manual operation of staff. The specific method is as follows:

[0065] First, the reciprocating screw 1307 is installed inside the installation slide 1305 through a bearing, and a slider 1304 is fixed to one side of the rack 1303 by bolts, which cooperates with the bidirectional spiral groove opened on the outside of the reciprocating screw 1307. A driving motor 1306 is provided on the outside of the valve body 1 to drive the reciprocating screw 1307 to rotate in the opposite direction along the axis. Therefore, by starting the driving motor 1306, the driving motor 1306 can rotate to drive the reciprocating screw 1307 to rotate. At this time, the slider 1304 drives the rack 1303 to move back and forth along the bidirectional spiral groove opened on the outside of the reciprocating screw 1307, thereby realizing the operation of driving the toothed disc 1302 to drive the external connecting rod 605 to rotate forward and reverse. Example 2

[0066] During use, the staff needs to manually press the pressing plate 1320 and complete the limiting operation of the limiting plate 1308 through cooperation with the eccentric wheel 1312. After cleaning is completed, the limiting state of the limiting plate 1308 needs to be touched again, which is a cumbersome process.

[0067] Therefore, the pressing plate 1320, the lower snap-on socket 1311, the eccentric wheel 1312 and the rotating shaft 1313 are removed, and then the upper mounting frame 1315 is fixed to the top of the rack 1303 by bolts. A trapezoidal groove 1316 is provided on one side of the upper mounting frame 1315, and a sliding bar 1319 is inserted into the outer side of the valve body 1. The end of the sliding bar 1319 is provided with a trapezoidal force-bearing end 1317 that cooperates with the trapezoidal groove 1316. The bottom of the sliding bar 1319 is fixed with a block seat 1318 for limiting the limit plate 1308 by bolts.

[0068] At this time, since the trapezoidal slot 1316 and the trapezoidal force-bearing end 1317 are in contact through the inclined surface, when the rack 1303 moves back and forth, the trapezoidal slot 1316 squeezes the trapezoidal force-bearing end 1317 through the inclined surface and applies a force to move outward. At this time, the trapezoidal force-bearing end 1317 drives the slide 1319 to move to the right until the trapezoidal force-bearing end 1317 is out of contact with the trapezoidal slot 1316. At this time, the slide 1319 moves to the right and drives the limit plate 1308 to move to the right through the block seat 1318. At this time, there is no need to manually press the limit plate 1308 to limit it, and the action of the external connecting rod 605 moving inward is also realized. In this process, the forward and reverse rotation operation of the external connecting rod 605 is still completed, and the operation is more convenient.

[0069] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A gate valve for a fracturing manifold with an anti-impurity accumulation effect, comprising a valve body (1) and a gate body (5), wherein the top and bottom of the valve body (1) are detachably mounted with an upper valve seat (101) and a lower valve seat (102) by screws, respectively, and characterized in that: The valve body (1) is provided with a fluid channel (14) and a middle inner cavity (12) that are connected to each other. The fluid channel (14) can be connected to the inner channel (504) provided in the gate body (5). The inner walls on both sides of the middle inner cavity (12) are fixedly connected with positioning guide rails (11) that match the positioning guide grooves (505) provided on both sides of the gate body (5). The upper valve seat (101) and the lower valve seat (102) are provided with outer cavities (105) at one end close to the valve body (1). A sealed chamber is formed between the outer cavity (105) and the middle inner cavity (12). Both sides of the gate body (5) are provided with embedded sealing grooves (501). A sewage drain groove (503) is provided at the bottom of the embedded sealing groove (501). The edges of both ends of the inner channel (504) are provided with a multi-level slope structure. Release angle (502), a sealing sleeve (9) is provided in the fluid channel (14) for contact sealing with both sides of the gate body (5), an opening and closing component for pulling the gate body (5) to move is provided between the upper valve seat (101) and the lower valve seat (102), a dredging component (6) for cleaning the gate body (5) is provided inside the valve body (1), a multi-stage processing component (4) for performing multiple cleanings on the gate body (5) is provided on the outside of the valve body (1), the multi-stage processing component (4) is connected to the dredging component (6) through a diversion channel (403) opened inside the valve body (1), the bottom inner wall of the outer cavity (105) of the lower valve seat (102) protrudes upward and forms a boss (103), and a sewage discharge channel (104) is opened on one side of the lower valve seat (102) and is connected to the lowest point of the outer cavity (105); The desilting assembly (6) comprises an upper fixing frame (601) fixedly connected to the inner walls on both sides of the valve body (1) near the top position, an upper nozzle (603) is fixedly connected to the end of the upper fixing frame (601), the tail end of the upper nozzle (603) is connected to an upper connecting pipe (604), one end of the upper connecting pipe (604) is connected to the diversion channel (403) through an upper connector (602), and side embedded grooves (620) are formed on the inner walls on both sides of the valve body (1) near the bottom position, and an external connecting rod (605) is passed through the side embedded groove (620). ), a limiting ring (614) that cooperates with the side embedded groove (620) is fixedly connected to the outer circumference of the outer connecting rod (605), a limiting seat (606) that blocks the position of the limiting ring (614) is fixedly connected to the side embedded groove (620), and a return spring (613) is provided between the limiting seat (606) and the limiting ring (614), a rotating ring (615) is provided between the limiting ring (614) and the return spring (613), and a dynamic seal (2) for sealing is provided between the limiting seat (606) and the outer connecting rod (605) 619), one end of the outer connecting rod (605) is provided with a pin barrel (617), a shaft rod (610) is inserted into the pin barrel (617), the outer side of the shaft rod (610) is provided with a plurality of key strips (618) that match the pin barrel (617), one end of the shaft rod (610) is fixedly connected to the inner wall of the pin barrel (617) with a compression spring (616), the other end of the shaft rod (610) is fixedly connected to two scraping arms (612), the ends of the scraping arms (612) are fixedly connected to scrapers (611) that can contact the release angle (502) ), the scraper (611) is a profiling structure of the release angle (502), the end of the external connecting rod (605) is fixedly connected to two opposing arms, the end of the arm is fixedly connected to a lower nozzle (608), the tail ends of the two lower nozzles (608) are connected by a lower connecting pipe (607), the end of the lower connecting pipe (607) is connected to the diversion channel (403) through a lower connector (609), and both sides of the valve body (1) are provided with a double-acting drive component (13) that drives the external connecting rod (605) to complete the dual action of lateral movement and rotation.

2. A gate valve for a fracturing manifold with an anti-impurity accumulation effect according to claim 1, characterized in that: The opening and closing assembly includes a threaded barrel (2) fixedly connected to the top of the upper valve seat (101), the threaded barrel (2) is internally threaded with a threaded rod (3), the top and bottom of the gate body (5) are respectively provided with an upper pull rod (10) and a lower pull rod (7) passing through the upper valve seat (101) and the lower valve seat (102), the top of the upper pull rod (10) is rotatably connected to the bottom end of the threaded rod (3), the connection positions of the upper pull rod (10), the lower pull rod (7) and the upper valve seat (101) and the lower valve seat (102) are all provided with a dynamic seal (8), and the top of the threaded rod (3) is fixedly connected to a turntable that drives the threaded rod (3) to rotate around its axis.

3. The gate valve for fracturing manifold with the effect of preventing impurities from accumulating according to claim 2, characterized in that: The multi-stage treatment component (4) includes a diverter cover (401) fixedly connected to the outside of the valve body (1), a flow regulating disk (405) is rotatably connected in the diverter cover (401), a confluence cavity (407) is formed between the stepped surface of the flow regulating disk (405) and the diverter cover (401), a guide groove (406) communicating with the confluence cavity (407) is provided at the bottom of the diverter cover (401), a side connector (415) connected to the diverter channel (403) is fixedly connected in the guide groove (406), a cleaning agent connection valve head (409) for preliminary cleaning of the sealed chamber and the gate body (5), a clean water connection valve head (410) for secondary cleaning, and a gas connection valve head (411) for dewatering are plugged and fixed on one side of the diverter cover (401), the flow regulating disk A through hole (408) is provided on one side of (405) and is connected to a cleaning agent connection valve head (409), a clean water connection valve head (410) and a gas connection valve head (411). A double-axis synchronous motor (404) is fixedly connected to the outside of the diverter cover (401). One end of the output shaft of the double-axis synchronous motor (404) passes through the diverter cover (401) and is fixed to the flow regulating disk (405). The other end of the output shaft of the double-axis synchronous motor (404) is fixedly connected to a code disk (412). A side bracket (414) is fixedly connected to the outside of the diverter cover (401). A light detector (413) that matches the code disk (412) is fixedly connected to one side of the side bracket (414). A dust cover (402) is provided on one side of the diverter cover (401).

4. A gate valve for a fracturing manifold with an anti-impurity accumulation effect according to claim 3, characterized in that: The double-acting drive assembly (13) is a rocker arm (1301) fixedly connected to the end of the outer connecting rod (605) passing through the valve body (1).

5. The gate valve for fracturing manifold with the effect of preventing impurities from accumulating according to claim 4, characterized in that: The double-acting drive assembly (13) includes a mounting slide (1305) fixedly connected to the outside of the valve body (1), a rack (1303) being slidably connected to one side of the mounting slide (1305), an outer connecting rod (605) passing through the end of the valve body (1) being fixedly connected to a driving toothed disc (1302) meshing with the rack (1303), the width of the driving toothed disc (1302) being much greater than the width of the rack (1303), and the outer connecting rod (605) ) is fixedly connected to the outer side of the circumference of the valve body (1), and a plurality of equally spaced mounting grooves (1309) are provided on one side of the limiting disk (1308). Balls (1310) are rotatably connected in the mounting grooves (1309). A limiting mechanism for positioning the position of the driving gear disc (1302) is provided on the outer side of the valve body (1), and a driving mechanism for driving the rack (1303) to move back and forth along the mounting slide (1305) is provided on the outer side of the valve body (1).

6. The gate valve for fracturing manifold with the effect of preventing impurities from accumulating according to claim 5, characterized in that: The driving mechanism includes a reciprocating screw (1307) rotatably connected to the interior of the mounting slide (1305) via a bearing, a slider (1304) fixedly connected to one side of the rack (1303) and cooperating with a bidirectional spiral groove provided on the outside of the reciprocating screw (1307), and a driving motor (1306) is provided on the outside of the valve body (1) for driving the reciprocating screw (1307) to rotate in the opposite direction along the axis.

7. A gate valve for a fracturing manifold with an anti-impurity accumulation effect according to claim 6, characterized in that: The driving mechanism comprises a reciprocating pull frame (1314) fixedly connected between the ends of the two racks (1303), with a gap being provided between the reciprocating pull frame (1314) and the valve body (1).

8. The gate valve for a fracturing manifold with an anti-impurity accumulation effect according to claim 7, characterized in that: The limiting mechanism comprises a rotating shaft (1313) rotatably connected to the outside of the valve body (1); an eccentric wheel (1312) is fixedly connected to one side of the rotating shaft (1313); a lower snap-on opening (1311) shaped like a limiting disc (1308) is provided at the bottom of the eccentric wheel (1312); and a pressing disc (1320) is fixedly connected to one side of the driving gear disc (1302).

9. The gate valve for a fracturing manifold with an anti-impurity accumulation effect according to claim 8, characterized in that: The limiting mechanism includes an upper mounting frame (1315) fixedly connected to the top of the rack (1303), a trapezoidal notch (1316) is provided on one side of the upper mounting frame (1315), a sliding bar (1319) is inserted into the outer side of the valve body (1), and a trapezoidal force-bearing end (1317) is provided at the end of the sliding bar (1319) to match the trapezoidal notch (1316), and a stopper (1318) is fixedly connected to the bottom of the sliding bar (1319) to limit the limiting plate (1308).

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