Wellhead gate valve capable of being quickly closed

Abstract

The invention discloses a wellhead gate valve capable of being rapidly closed, and relates to the technical field of pipeline gate valves, the bottom of a valve closing component is rotatably connected with the top of a main body shell, the wellhead gate valve comprises a connecting plate, the bottom of the connecting plate is fixedly connected with the top of the main body shell, and the middle of an inner cavity of the connecting plate is in threaded connection with a threaded rod; the valve closing component is arranged, a threaded rod rotates and moves downwards in an inner cavity of the main body shell through the stretching effect of a connecting spring and sliding of a limiting block in a limiting groove at the same time, a connecting plate is in threaded connection with a threaded groove in the upper portion of the threaded rod during rotation through inertia, the position of the threaded rod is limited, and the valve closing effect is improved. And the threaded rod is fixed by rotating the threaded rod, and meanwhile, the valve plate slides in the inner cavity of the fixing block, so that crude oil in the main body shell is separated by the valve, and the closing work of the valve is completed.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline gate valves, and in particular to a wellhead gate valve capable of rapidly closing the valve. Background Art

[0002] Wellhead equipment and Christmas trees are important equipment for oil and gas production. They are composed of casing head, tubing head and Christmas (gas) tree. They are used to connect casing string and tubing string, seal the annular space between casing layers and tubing, and control the pressure of production wellhead and adjust the flow of oil wellhead. They can also be used for special operations such as acid fracturing, water injection and testing. They can meet different working conditions, have reliable sealing and safe operation. The function of controlling and adjusting the flow of oil well and wellhead pressure needs to rely on valves, among which gate valves play a more critical role and are the valves with the largest usage in oil fields.

[0003] When closing the gate valve, the existing device usually drives the gate valve to close the valve by rotating the threaded rod, but the speed of the threaded rod driving the gate valve is slow, so a lot of time is wasted when closing the valve. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention solves the technical problems by adopting the following technical solutions: a wellhead gate valve capable of rapid valve closing according to the present invention comprises a main body shell; The cam is connected to the top of the main body shell, and the bottom of the cam is connected to the top of the main body shell, and the cam is connected to the bottom of the main body shell. A limiting groove is provided on the outer surface of the rod; when the valve needs to be closed, the threaded rod is rotated to make the threaded rod rotate in the inner cavity of the connecting plate, so that the threaded groove below the threaded rod is separated from the inner wall of the connecting plate, and the limitation of the threaded rod and the connecting plate is released. At the same time, through the stretching effect of the connecting spring, when the threaded groove below the threaded rod is separated from the connecting plate, it can be quickly moved downward in the inner cavity of the main shell through the reset stretching of the connecting spring, and at the same time, the limiting block slides in the limiting groove, so that the threaded rod rotates and moves downward in the inner cavity of the main shell. Through inertia, the connecting plate is threadedly connected with the threaded groove above the threaded rod during rotation, so that the position of the threaded rod is limited, and then the threaded rod is fixed by rotating the threaded rod, and at the same time, the valve plate slides in the inner cavity of the fixing block, so that the valve separates the crude oil in the main shell, thereby completing the valve closing work.

[0005] A connecting component, the connecting component is used to guide the valve closing component, and the outer surface of the connecting component is fixedly connected to the inner wall of the main body shell; A filter component, the filter component is used to filter the crude oil entering the inner cavity of the main body shell, and the outer surface of the filter component is fixedly connected to the inner wall of the main body shell; Preferably, the connecting component includes a fixed block, the outer surface of the fixed block is fixedly connected to the inner wall of the main shell, the top of the fixed block is symmetrically provided with a cleaning mechanism, and the top of the fixed block is fixedly connected to the bottom of the cleaning mechanism; when the main shell is opened, the valve plate is driven to move upward by the threaded rod, so that the cleaning mechanism on the top of the fixed block can clean the crude oil remaining on the valve plate.

[0006] Preferably, the cleaning mechanism includes a cleaning block, the bottom of the cleaning block is fixedly connected to the top of the fixed block, the bottom of the cleaning block is fixedly connected to the top of the fixed block, the outer surface of the cleaning block is symmetrically provided with arc rods, the end of the arc rod away from the cleaning block is slidably connected to the inner wall of the sliding groove through a socket, the end of the arc rod close to the cleaning block is rotatably connected to the outer surface of the cleaning block through a socket, the inner wall of the cleaning block is rotatably connected to a rotating block through the socket, the outer surface of the rotating block is symmetrically provided with sliding grooves, the top of the cleaning block is fixedly connected with a scraper, the end of the scraper away from the cleaning block is in contact with the valve plate, and the outer surface of the cleaning block is fixedly connected with a collecting Bin, the number of the collecting bins is four, and the inner wall of the collecting bin is fixedly connected with a sponge block; when the valve plate is driven to move upward by the threaded rod, the scraper contacts the valve plate, so that when the valve plate moves upward, the valve plate contacts and squeezes the scraper, driving the cleaning block to deflect, and at the same time, the arc rod slides in the sliding groove to limit the position of the cleaning block, so that the scraper can clean and scratch the surface of the valve plate to scrape off the crude oil remaining on the valve plate, and the scraped liquid crude oil flows along the side of the cleaning block close to the collecting bin, thereby entering the inner cavity of the collecting bin, and by arranging the sponge block in the inner cavity of the collecting bin, the crude oil can be adsorbed and collected.

[0007] Preferably, the filtering component includes a filter plate, the outer surface of which is fixedly connected to the inner wall of the main body shell, the outer surface of which is fixedly connected to a filter spring, and the outer surface of the filter spring is fixedly connected to a moving mechanism at one end away from the filter plate; and then connected to the main body shell through a shell oil pipe, the crude oil enters the inner cavity of the main body shell after being filtered by the filter plate, and the moving mechanism is moved in the inner cavity of the main body shell by the impact force generated by the continuous flow of crude oil. When gravel mixed in the crude oil blocks the filter plate when passing through the filter plate, when the mesh holes of the filter plate are mostly blocked, the impact of the crude oil on the moving mechanism is less than the reset tensile force of the filter spring, so that the filter spring drives the moving mechanism to move toward the filter plate.

[0008] Preferably, the moving mechanism includes a movable telescopic rod, an end of the telescopic rod close to the filter plate is fixedly connected to the outer surface of the filter plate, the outer surface of the telescopic rod is evenly provided with bent rods, an end of the bent rod close to the telescopic rod is fixedly connected to the outer surface of the telescopic rod, and an end of the outer surface of the bent rod away from the telescopic rod is fixedly connected to an anti-blocking component; when the impact of crude oil on the moving mechanism is less than the reset tensile force of the filter spring, the filter spring drives the bent rod to move through the telescopic rod, so that the bent rod drives the anti-blocking component to clear the blocked mesh.

[0009] Preferably, the anti-blocking assembly includes a pin, one end of the pin close to the curved rod is fixedly connected to the outer surface of the curved rod, the outer surface of the pin is sleeved with an arc shell, the outer surface of the arc shell is evenly provided with notches, the outer surface of the arc shell is fixedly connected with an arc plate, the outer surface of the pin is sleeved with an anti-blocking spring, one end of the anti-blocking spring close to the arc shell is fixedly connected to the inner wall of the arc shell, the end of the anti-blocking spring away from the arc shell is fixedly connected to the outer surface of the movable plate, the outer surface of the pin is slidably connected to the movable plate, the inner wall of the movable plate is slidably connected to the outer surface of the pin, and the outer surface of the movable plate is evenly provided with knocking blocks, the number of the knocking blocks is four, and the four knocking blocks are evenly arranged with the pin as the center, and the end of the knocking block close to the movable plate is fixedly connected to the outer surface of the movable plate; when the bent rod is reset and moved, the pin and the filter are The stones that clog the mesh of the mesh plate are offset, so that when the bent rod drives the ejector pin to continue to reset and move, the ejector pin ejects the stones stuck in the mesh of the filter plate. At the same time, when the ejector pin continues to move, the arc plate can clean and scratch the inner wall of the mesh of the filter plate, thereby scraping off the impurities adhered to the inner wall of the mesh of the filter plate. After the mesh is unblocked, the crude oil at the mesh flows through the notch, thereby avoiding interference with the normal passage of crude oil when the mesh of the filter plate is cleared. When the moving plate is impacted by the crude oil, it moves on the outer surface of the ejector pin. After closing the valve, when the impact force of the crude oil disappears, the moving plate drives the knocking block to reset and move through the stretching and reset effect of the anti-blocking spring, so that the knocking block knocks against the inner wall of the arc shell, and the impurities remaining in the arc plate when it rubs against the inner wall of the mesh are shaken off through the force generated when the knocking block collides with the arc block.

[0010] The beneficial effects of the present invention are as follows: 1. The present invention provides a valve closing component, and the threaded groove below the threaded rod is separated from the inner wall of the connecting plate, thereby releasing the limitation on the threaded rod and the connecting plate. Through the stretching action of the connecting spring, the threaded rod can be quickly moved downward in the inner cavity of the main shell through the reset stretching of the connecting spring, and at the same time, the limit block slides in the limit groove, so that the threaded rod rotates and moves downward in the inner cavity of the main shell. Through inertia, the connecting plate is threadedly connected with the threaded groove above the threaded rod during rotation, so that the position of the threaded rod is limited, and then the threaded rod is fixed by rotating the threaded rod, and at the same time, the valve plate slides in the inner cavity of the fixing block, so that the valve separates the crude oil in the main shell, thereby quickly completing the valve closing work.

[0011] 2. The present invention provides a cleaning mechanism. When the scraper valve plate moves upward, the valve plate contacts and squeezes the scraper plate, driving the cleaning block to deflect. At the same time, the arc rod slides in the sliding groove, thereby limiting the position of the cleaning block, so that the scraper plate can clean and scrape the surface of the valve plate to scrape off the crude oil remaining on the valve plate. The scraped liquid crude oil flows along the side of the cleaning block close to the collecting bin, and then enters the inner cavity of the collecting bin. By providing a sponge block in the inner cavity of the collecting bin, the crude oil can be adsorbed and collected, thereby preventing the crude oil in the collecting bin from spilling when the cleaning mechanism moves.

[0012] 3. The present invention provides an anti-blocking component. When the bending rod is reset, the ejector pin is against the stones that block the mesh of the filter plate. As a result, when the bending rod drives the ejector pin to continue to reset, the ejector pin ejects the stones stuck in the mesh of the filter plate. At the same time, when the ejector pin continues to move, the arc plate can clean and scratch the inner wall of the mesh of the filter plate, thereby scraping off impurities adhered to the inner wall of the mesh of the filter plate.

[0013] 4. The present invention provides notches and knocking blocks. When cleaning clogged mesh holes, the crude oil at the mesh holes flows through the notches, thereby avoiding interference with the normal passage of crude oil when the filter plate mesh holes are cleared. When the movable plate is impacted by the crude oil, it moves on the outer surface of the ejector pin. After closing the valve, when the impact force of the crude oil disappears, the movable plate drives the knocking block to reset and move through the stretching and resetting action of the anti-blocking spring, thereby causing the knocking block to knock against the inner wall of the arc shell. The force generated when the knocking block collides with the arc block shakes off the impurities remaining in the arc plate when it rubs against the inner wall of the mesh hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the valve closing component of the present invention; Figure 4 is a cross-sectional view of a valve closing component of the present invention; Figure 5 It is a structural schematic diagram of the cleaning mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the filter component of the present invention; Figure 7 It is a structural schematic diagram of the mobile mechanism of the present invention; Figure 8 The present invention Figure 7 The structural diagram at A in the middle; In the figure: 1. main body shell; 2. valve closing component; 21. connecting plate; 22. threaded rod; 23. connecting spring; 24. valve plate; 25. arc block; 26. limit block; 27. limit groove; 3. connecting component; 31. fixed block; 32. cleaning mechanism; 321. cleaning block; 322. arc rod; 323. rotating block; 324. sliding groove; 325. scraper; 326. collecting bin; 327. sponge block; 4. filtering component; 41. filter plate; 42. filtering spring; 43. moving mechanism; 431. telescopic rod; 432. bending rod; 433. anti-blocking component; 4331. ejector pin; 4332. arc shell; 4333. notch; 4334. arc plate; 4335. anti-blocking spring; 4336. moving plate; 4337. knocking block. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0016] Example 1, using Figure 1-Figure 4 A wellhead gate valve capable of rapid valve closing according to an embodiment of the present invention is described as follows.

[0017] like Figure 1-Figure 4 The invention discloses a wellhead gate valve capable of rapidly closing the valve, comprising: Main body shell 1; It also includes a valve closing component 2, which is used to close the valve of the main housing 1. The bottom of the valve closing component 2 is rotatably connected to the top of the main housing 1, including a connecting plate 21, the bottom of the connecting plate 21 is fixedly connected to the top of the main housing 1, and the middle part of the inner cavity of the connecting plate 21 is threadedly connected with a threaded rod 22, and the outer surface of the threaded rod 22 is sleeved with a connecting spring 23, and one end of the connecting spring 23 close to the arc block 25 is fixedly connected to the bottom of the arc block 25, and the connecting spring 23 is away from the arc block 2 The end of the connecting plate 21 is fixedly connected to the top of the valve plate 24, the bottom of the threaded rod 22 is fixedly connected to the valve plate 24, the outer surface of the valve plate 24 is slidably connected to the inner wall of the fixed block 31, the bottom of the connecting plate 21 is fixedly connected to the arc block 25, the inner wall of the arc block 25 is symmetrically provided with a limit block 26, the end of the limit block 26 away from the arc block 25 is slidably connected to the inner wall of the limit groove 27, the end of the limit block 26 close to the threaded rod 22 is fixedly connected to the outer surface of the threaded rod 22, and the outer surface of the threaded rod 22 is provided with a The limiting groove 27 is provided; when the valve needs to be closed, the threaded rod 22 is rotated so that the threaded rod 22 rotates in the inner cavity of the connecting plate 21, so that the threaded groove below the threaded rod 22 is separated from the inner wall of the connecting plate 21, and the limit of the threaded rod 22 and the connecting plate 21 is released. At the same time, through the stretching effect of the connecting spring 23, when the threaded groove below the threaded rod 22 is separated from the connecting plate 21, it can be quickly moved downward in the inner cavity of the main shell 1 through the reset stretching of the connecting spring 23, and at the same time, the limiting block 26 slides in the limiting groove 27, so that the threaded rod 22 rotates and moves downward in the inner cavity of the main shell 1. Through inertia, the connecting plate 21 is threadedly connected with the threaded groove above the threaded rod 22 during rotation, so that the position of the threaded rod 22 is limited, and then the threaded rod 22 is fixed by rotating it, and at the same time, the valve plate 24 slides in the inner cavity of the fixing block 31, so that the valve separates the crude oil in the main shell 1, thereby completing the valve closing work.

[0018] A connecting component 3, which is used to guide the valve closing component 2, and the outer surface of the connecting component 3 is fixedly connected to the inner wall of the main housing 1; A filter component 4, the filter component 4 is used to filter the crude oil entering the inner cavity of the main housing 1, and the outer surface of the filter component 4 is fixedly connected to the inner wall of the main housing 1; When the main casing 1 needs to be closed, the valve closing component 2 is rotated to release the limit fixation between the valve closing component 2 and the main casing 1, and then the valve closing component 2 is moved in the inner cavity of the connecting component 3, and then the valve closing component 2 is rotated again to limit the valve closing component 2 and the main casing, thereby closing the valve of the main casing 1. During operation, when crude oil passes through the inner cavity of the main casing 1 through the external oil pipe, impurities in the crude oil can be filtered when the crude oil passes through the filtering component 4, so as to prevent gravel in the crude oil from wearing the inner wall of the main casing 1.

[0019] Embodiment 2, use Figure 1-Figure 5 A wellhead gate valve capable of rapid valve closing according to an embodiment of the present invention is described as follows.

[0020] like Figure 1-Figure 5 The invention shows a wellhead gate valve capable of rapid valve closing. On the basis of the first embodiment, the connecting component 3 comprises a fixing block 31, the outer surface of the fixing block 31 is fixedly connected to the inner wall of the main housing 1, the top of the fixing block 31 is symmetrically provided with a cleaning mechanism 32, and the top of the fixing block 31 is fixedly connected to the bottom of the cleaning mechanism 32; when the main housing 1 is opened, the valve plate 24 is driven to move upward by the threaded rod 22, so that the cleaning mechanism on the top of the fixing block 31 can clean the crude oil remaining on the valve plate 24; The cleaning mechanism 32 includes a cleaning block 321, the bottom of the cleaning block 321 is fixedly connected to the top of the fixed block 31, the bottom of the cleaning block 321 is fixedly connected to the top of the fixed block 31, the outer surface of the cleaning block 321 is symmetrically provided with arc rods 322, the end of the arc rod 322 away from the cleaning block 321 is slidably connected to the inner wall of the sliding groove 324 through a socket, the end of the arc rod 322 close to the cleaning block 321 is rotatably connected to the outer surface of the cleaning block 321 through a socket, the inner wall of the cleaning block 321 is rotatably connected with a rotating block 323 through the socket, the outer surface of the rotating block 323 is symmetrically provided with sliding grooves 324, the top of the cleaning block 321 is fixedly connected with a scraper 325, the end of the scraper 325 away from the cleaning block contacts the valve plate 24, the outer surface of the cleaning block 321 is fixedly connected with a collecting bin 326, and the collecting bin 3 There are four valves 26, and a sponge block 327 is fixedly connected to the inner wall of the collecting bin 326; when the valve plate 24 is driven to move upward by the threaded rod 22, the scraper 325 contacts the valve plate 24, so that when the valve plate 24 moves upward, the valve plate 24 contacts and squeezes the scraper 325, driving the cleaning block 321 to deflect, and at the same time, the arc rod 322 slides in the sliding groove 324, thereby limiting the position of the cleaning block 321, so that the scraper 325 can clean and scrape the surface of the valve plate 24, thereby scraping off the crude oil remaining on the valve plate 24, and the scraped liquid crude oil flows along the side of the cleaning block 321 close to the collecting bin 326, thereby entering the inner cavity of the collecting bin 326, and by arranging the sponge block 327 in the inner cavity of the collecting bin 326, the crude oil can be adsorbed and collected.

[0021] Example 3, using Figure 1-Figure 8 A wellhead gate valve capable of rapid valve closing according to an embodiment of the present invention is described as follows.

[0022] like Figure 1-Figure 8The invention shows a wellhead gate valve capable of rapid valve closing. On the basis of the first embodiment, the filter component 4 comprises a filter plate 41, the outer surface of the filter plate 41 is fixedly connected to the inner wall of the main body shell 1, the outer surface of the filter plate 41 is fixedly connected to a filter spring 42, and the outer surface of the filter spring 42 is fixedly connected to a moving mechanism 43 at one end away from the filter plate 41; the filter plate 41 is connected to the main body shell 1 through the shell oil pipe, and the crude oil enters the inner cavity of the main body shell 1 after being filtered by the filter plate 41. At the same time, the moving mechanism 43 is moved in the inner cavity of the main body shell 1 by the impact force generated by the continuous flow of crude oil. When the crushed stones mixed in the crude oil pass through the filter plate 41, the filter plate 41 is blocked, and when the mesh holes of the filter plate 41 are blocked more, the impact of the crude oil on the moving mechanism 43 is less than the reset tensile force of the filter spring 42, so that the filter spring 42 drives the moving mechanism 43 to move toward the filter plate 41.

[0023] The moving mechanism 43 includes a moving telescopic rod 431, one end of the telescopic rod 431 close to the filter plate 41 is fixedly connected to the outer surface of the filter plate 41, and the outer surface of the telescopic rod 431 is evenly provided with bent rods 432, one end of the bent rod 432 close to the telescopic rod 431 is fixedly connected to the outer surface of the telescopic rod 431, and the end of the outer surface of the bent rod 432 away from the telescopic rod 431 is fixedly connected to an anti-blocking component 433; when the impact of crude oil on the moving mechanism 43 is less than the reset tensile force of the filter spring 42, the filter spring 42 drives the bent rod 432 to move through the telescopic rod 431, so that the bent rod 432 drives the anti-blocking component 433 to clear the blocked mesh.

[0024] The anti-blocking assembly 433 includes an ejector pin 4331, one end of the ejector pin 4331 close to the curved rod 432 is fixedly connected to the outer surface of the curved rod 432, the outer surface of the ejector pin 4331 is sleeved with an arc shell 4332, the outer surface of the arc shell 4332 is evenly provided with notches 4333, the outer surface of the arc shell 4332 is fixedly connected with an arc plate 4334, the outer surface of the ejector pin 4331 is sleeved with an anti-blocking spring 4335, one end of the anti-blocking spring 4335 close to the arc shell 4332 is fixedly connected to the inner wall of the arc shell 4332, and the anti-blocking spring 4335 is away from the arc shell. One end of the arc shell 4332 is fixedly connected to the outer surface of the movable plate 4336, the outer surface of the ejector pin 4331 is slidably connected to the movable plate 4336, the inner wall of the movable plate 4336 is slidably connected to the outer surface of the ejector pin 4331, and the outer surface of the movable plate 4336 is evenly provided with knocking blocks 4337, the number of the knocking blocks 4337 is four, and the four knocking blocks 4337 are evenly arranged with the ejector pin 4331 as the center, and the end of the knocking block 4337 close to the movable plate 4336 is fixedly connected to the outer surface of the movable plate 4336; the reset movement is performed by the bending rod 432 When the ejector pin 4331 is moved, the ejector pin 4331 is pressed against the stone that is blocking the mesh of the filter plate 41, so that when the bent rod 432 drives the ejector pin 4331 to continue to reset, the ejector pin 4331 ejects the stone stuck in the mesh of the filter plate 41. At the same time, when the ejector pin 4331 continues to move, the arc plate 4334 can clean and scrape the inner wall of the mesh of the filter plate 41, so as to scrape off the impurities adhered to the inner wall of the mesh of the filter plate 41. After the mesh is unblocked, the crude oil at the mesh flows through the notch 4333, so as to avoid the mesh of the filter plate 41 being damaged. When the clearing work is carried out, the normal passage of crude oil is disturbed. When the movable plate 4336 is impacted by the crude oil, it moves on the outer surface of the ejector pin 4331. After the valve is closed, when the impact force of the crude oil disappears, the movable plate 4336 is stretched and reset by the anti-blocking spring 4335, thereby driving the knocking block 4337 to reset and move, so that the knocking block 4337 knocks against the inner wall of the arc shell 4332. The force generated when the knocking block 4337 collides with the arc block 25 shakes off the impurities remaining in the arc plate 4334 when it rubs against the inner wall of the mesh.

[0025] The specific workflow is as follows: During operation, when the main housing 1 needs to be closed, the valve closing component 2 is rotated to release the limit fixation between the valve closing component 2 and the main housing 1, and then the valve closing component 2 is moved in the inner cavity of the connecting component 3, and then the valve closing component 2 is rotated again to limit the valve closing component 2 and the main housing, thereby closing the valve of the main housing 1. During operation, when crude oil passes through the inner cavity of the main housing 1 through the external oil pipe, impurities in the crude oil can be filtered when the crude oil passes through the filtering component 4, so as to prevent the gravel in the crude oil from wearing the inner wall of the main housing 1; When the valve needs to be closed, the threaded rod 22 is rotated so that the threaded rod 22 rotates in the inner cavity of the connecting plate 21, so that the threaded groove below the threaded rod 22 is separated from the inner wall of the connecting plate 21, and the limit of the threaded rod 22 and the connecting plate 21 is released. At the same time, through the stretching effect of the connecting spring 23, when the threaded groove below the threaded rod 22 is separated from the connecting plate 21, it can be quickly moved downward in the inner cavity of the main shell 1 through the reset stretching of the connecting spring 23, and at the same time, the limit block 26 slides in the limit groove 27, so that the threaded rod 22 rotates and moves downward in the inner cavity of the main shell 1. Through inertia, the connecting plate 21 is threadedly connected with the threaded groove above the threaded rod 22 during rotation, so that the position of the threaded rod 22 is limited, and then the threaded rod 22 is fixed by rotating it, and at the same time, the valve plate 24 slides in the inner cavity of the fixing block 31, so that the valve separates the crude oil in the main shell 1, thereby completing the valve closing work; When the main housing 1 is opened, the valve plate 24 is driven upward by the threaded rod 22, so that the cleaning mechanism on the top of the fixed block 31 can clean the crude oil remaining on the valve plate 24; When the valve plate 24 is driven to move upward by the threaded rod 22, the scraper 325 contacts the valve plate 24, so that when the valve plate 24 moves upward, the valve plate 24 contacts and squeezes the scraper 325, driving the cleaning block 321 to deflect, and at the same time, the arc rod 322 slides in the sliding groove 324, thereby limiting the position of the cleaning block 321, so that the scraper 325 can clean and scrape the surface of the valve plate 24, thereby scraping off the crude oil remaining on the valve plate 24, and the scraped liquid crude oil flows along the side of the cleaning block 321 close to the collection bin 326, and enters the inner cavity of the collection bin 326, and the sponge block 327 is arranged in the inner cavity of the collection bin 326, so that the crude oil can be adsorbed and collected; Then, the outer shell oil pipe is connected to the main shell 1, and the crude oil enters the inner cavity of the main shell 1 after being filtered by the filter plate 41. At the same time, the impact force generated by the continuous flow of crude oil causes the moving mechanism 43 to move in the inner cavity of the main shell 1. When the crushed stones mixed in the crude oil pass through the filter plate 41, the filter plate 41 is blocked. When the mesh holes of the filter plate 41 are blocked, the impact of the crude oil on the moving mechanism 43 is less than the reset tensile force of the filter spring 42, so that the filter spring 42 drives the moving mechanism 43 to move toward the filter plate 41. When the impact of crude oil on the moving mechanism 43 is smaller than the restoring tensile force of the filter spring 42, the filter spring 42 drives the bending rod 432 to move through the telescopic rod 431, so that the bending rod 432 drives the anti-blocking component 433 to clear the blocked mesh. When the bent rod 432 is reset, the ejector pin 4331 is pressed against the stone that is blocking the mesh of the filter plate 41, so that when the bent rod 432 drives the ejector pin 4331 to continue to reset, the ejector pin 4331 ejects the stone stuck in the mesh of the filter plate 41. At the same time, when the ejector pin 4331 continues to move, the arc plate 4334 can clean and scrape the inner wall of the mesh of the filter plate 41, so as to scrape off the impurities adhered to the inner wall of the mesh of the filter plate 41. After the mesh is unblocked, the crude oil at the mesh flows through the notch 4333, thereby avoiding the filter. When the mesh of the mesh plate 41 is being cleared, it interferes with the normal passage of crude oil. When the movable plate 4336 is impacted by the crude oil, it moves on the outer surface of the ejector pin 4331. After the valve is closed, when the impact force of the crude oil disappears, the movable plate 4336 is stretched and reset by the anti-blocking spring 4335, thereby driving the knocking block 4337 to reset and move, so that the knocking block 4337 knocks against the inner wall of the arc shell 4332. The force generated when the knocking block 4337 collides with the arc block 25 shakes off the impurities remaining in the arc plate 4334 when it rubs against the inner wall of the mesh.

[0026] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A wellhead gate valve capable of rapid valve closing, comprising a main body housing (1), characterized in that: It also includes a valve closing component (2), which is used to close the valve of the main housing (1), the bottom of the valve closing component (2) is rotatably connected to the top of the main housing (1), and includes a connecting plate (21), the bottom of the connecting plate (21) is fixedly connected to the top of the main housing (1), a threaded rod (22) is threadedly connected to the middle of the inner cavity of the connecting plate (21), the outer surface of the threaded rod (22) is sleeved with a connecting spring (23), the bottom of the threaded rod (22) is fixedly connected to a valve plate (24), the bottom of the connecting plate (21) is fixedly connected to a circular arc block (25), the inner wall of the circular arc block (25) is symmetrically provided with a limit block (26), the limit block (26) is fixedly connected to the outer surface of the threaded rod (22) at one end close to the threaded rod (22), and the outer surface of the threaded rod (22) is provided with a limit groove (27); A connecting component (3), the connecting component (3) being used to guide the closing valve component (2), the outer surface of the connecting component (3) being fixedly connected to the inner wall of the main body shell (1); A filter component (4) is used to filter crude oil that enters the inner cavity of the main body shell (1); the outer surface of the filter component (4) is fixedly connected to the inner wall of the main body shell (1).

2. A wellhead gate valve capable of rapid valve closing according to claim 1, characterized in that: The connecting component (3) comprises a fixing block (31), the outer surface of the fixing block (31) being fixedly connected to the inner wall of the main housing (1), a cleaning mechanism (32) being symmetrically arranged on the top of the fixing block (31), and the top of the fixing block (31) being fixedly connected to the bottom of the cleaning mechanism (32).

3. A wellhead gate valve capable of rapid valve closing according to claim 2, characterized in that: One end of the connecting spring (23) close to the arc block (25) is fixedly connected to the bottom of the arc block (25), one end of the connecting spring (23) away from the arc block (25) is fixedly connected to the top of the valve plate (24), one end of the limiting block (26) away from the arc block (25) is slidably connected to the inner wall of the limiting groove (27), and the outer surface of the valve plate (24) is slidably connected to the inner wall of the fixing block (31).

4. A wellhead gate valve capable of rapid valve closing according to claim 2, characterized in that: The cleaning mechanism (32) comprises a cleaning block (321), the bottom of the cleaning block (321) being fixedly connected to the top of the fixed block (31), the outer surface of the cleaning block (321) being symmetrically provided with arc rods (322), one end of the arc rods (322) close to the cleaning block (321) being rotatably connected to the outer surface of the cleaning block (321) via a socket, the inner wall of the cleaning block (321) being rotatably connected to a rotating block (323) via a socket, the outer surface of the rotating block (323) being symmetrically provided with sliding grooves (324), the top of the cleaning block (321) being fixedly connected to a scraper (325), the outer surface of the cleaning block (321) being fixedly connected to a collecting bin (326), and the inner wall of the collecting bin (326) being fixedly connected to a sponge block (327).

5. A wellhead gate valve capable of rapid valve closing according to claim 4, characterized in that: The bottom of the cleaning block (321) is fixedly connected to the top of the fixed block (31); one end of the arc rod (322) away from the cleaning block (321) is slidably connected to the inner wall of the sliding groove (324) via a socket; the number of the collecting bins (326) is four; and one end of the scraper (325) away from the cleaning block is in contact with the valve plate (24).

6. A wellhead gate valve capable of rapid valve closing according to claim 1, characterized in that: The filter component (4) comprises a filter plate (41), the outer surface of the filter plate (41) being fixedly connected to the inner wall of the main body shell (1), the outer surface of the filter plate (41) being fixedly connected to a filter spring (42), and the outer surface of the filter spring (42) being fixedly connected to a moving mechanism (43) at one end thereof away from the filter plate (41).

7. A wellhead gate valve capable of rapid valve closing according to claim 6, characterized in that: The moving mechanism (43) comprises a movable telescopic rod (431); one end of the telescopic rod (431) close to the filter plate (41) is fixedly connected to the outer surface of the filter plate (41); the outer surface of the telescopic rod (431) is evenly provided with bent rods (432); one end of the bent rod (432) close to the telescopic rod (431) is fixedly connected to the outer surface of the telescopic rod (431); and one end of the outer surface of the bent rod (432) away from the telescopic rod (431) is fixedly connected to an anti-blocking component (433).

8. A wellhead gate valve capable of rapid valve closing according to claim 7, characterized in that: The anti-blocking component (433) comprises a pin (4331), one end of the pin (4331) close to the bent rod (432) is fixedly connected to the outer surface of the bent rod (432), the outer surface of the pin (4331) is sleeved with a circular arc shell (4332), the outer surface of the circular arc shell (4332) is evenly provided with notches (4333), the outer surface of the circular arc shell (4332) is fixedly connected with an arc plate (4334), the outer surface of the pin (4331) is sleeved with an anti-blocking spring (4335), the outer surface of the pin (4331) is slidably connected with a moving plate (4336), the outer surface of the moving plate (4336) is evenly provided with knocking blocks (4337), and one end of the knocking blocks (4337) close to the moving plate (4336) is fixedly connected to the outer surface of the moving plate (4336).

9. A wellhead gate valve capable of rapid valve closing according to claim 8, characterized in that: The number of the knocking blocks (4337) is four, and the four knocking blocks (4337) are evenly arranged with the ejector pin (4331) as the center; one end of the anti-blocking spring (4335) close to the arc shell (4332) is fixedly connected to the inner wall of the arc shell (4332); one end of the anti-blocking spring (4335) away from the arc shell (4332) is fixedly connected to the outer surface of the movable plate (4336); and the inner wall of the movable plate (4336) is slidably connected to the outer surface of the ejector pin (4331).

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