A highly efficient sealing valve under high pressure environment

Abstract

The present invention discloses a high-efficiency sealing valve under high-pressure environment, which relates to the technical field of sealing valves. The valve comprises a main body, a filter plate is fixed inside the main body, a cleaning assembly driven by a motor is provided on one side of the filter plate, an opening and closing assembly is provided at the bottom of the cleaning assembly, a blocking assembly is provided inside the limit frame, the blocking assembly is rotatably connected to a first blocking plate and a second blocking plate, and a moving assembly is provided on one side of the first blocking plate and the second blocking plate. The present invention drives the connecting shaft to rotate by rotating the second bevel gear, thereby driving the first fixed rod and the second fixed rod to move in the cavity opened on both sides of the connecting frame, thereby driving the rotating shaft and the rotating ring to rotate, so that the first blocking plate and the second blocking plate rotate to block the residual oil sample, thereby achieving the effect of preventing the residual oil sample from slowly seeping out of the nozzle due to the release of system pressure or its own gravity after the valve is closed.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing valves, and in particular to a high-efficiency sealing valve under a high-pressure environment. Background Art

[0002] High-pressure sealing valves are key fluid control equipment used in high-pressure environments. Their core function is to achieve reliable sealing and fluid on-off control under high-pressure working conditions. Taking the petrochemical industry as an example, its working pressure often reaches tens of MPa, and the medium is flammable, explosive, highly corrosive and other characteristics. Ordinary valves are difficult to cope with. High-pressure sealing valves rely on metal hard sealing surfaces and self-tightening sealing structures. While withstanding high pressure, they can effectively prevent medium leakage and ensure production safety. In the high-pressure environment of petrochemicals, sampling valves are key components connecting production processes and quality inspections. Their core role is to achieve accurate sampling of process media under the premise of ensuring safety and stability. By sampling and analyzing the composition, viscosity, impurity content and other indicators of the medium, data support is provided for process parameter adjustment to ensure stable operation of the production process. Regular sampling and retention can be used for quality traceability. If a product is unqualified or a safety accident occurs, the source of the problem can be located through historical sample analysis.

[0003] The filter plates in traditional sealed valves used for sampling in high-pressure environments in petrochemicals are prone to adhere to the filter plate surface to form a "filter cake layer" due to the poor fluidity of high-viscosity media (such as heavy crude oil and polymer melts), which hinders the passage of fluid. Or, when the particle size of solid particles carried in the medium is close to or larger than the pore size of the filter plate, they will be directly intercepted on the filter plate surface or embedded in the pores, forming a physical blockage. The blockage of the filter plate will increase the resistance of the fluid passing through the filter plate, resulting in an increase in the pressure upstream of the sampling valve. In high-pressure systems, this abnormal pressure increase may cause leakage in pipelines or valve seals, or even cause pipeline rupture, resulting in the risk of medium splashing or fire and explosion. In addition, some valves have "dead volume". Areas such as the bottom of the valve cavity and the angle between the valve core and the main body. Due to the special geometric shape of these areas, it is difficult for the oil sample to be completely discharged after sampling and it is easy to be retained in them. When the valve is closed, the residual oil sample will slowly seep out from the nozzle due to the release of system pressure or its own gravity. The media in the petrochemical field, such as crude oil, light hydrocarbons, solvent oil, etc., are mostly flammable and explosive substances. After leakage, they will evaporate rapidly to form a flammable vapor cloud. Once they encounter ignition sources such as static sparks and high-temperature surfaces of equipment, they are very likely to cause flash fire and explosion, posing a huge threat to production safety.

[0004] In response to the above problems, it is urgent to carry out innovative designs based on the original high-efficiency sealing valves under high-pressure environments. Summary of the Invention

[0005] The technical solution of the present invention addresses the technical problem that the existing technical solutions are too simple, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present invention is to provide an efficient sealing valve under high-pressure environment to solve the problem proposed in the above background technology that the filter plate of the traditional petrochemical high-pressure sampling sealing valve is easily formed due to the adhesion of high-viscosity media, or is physically blocked by solid particles such as rust and welding slag, and some valves are easily trapped in the "dead volume" area of ​​the oil sample, and the residual oil sample seeps out from the nozzle after closing.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-efficiency sealing valve under high-pressure environment, comprising a main body, a fixed plate fixed inside the main body, a sealing assembly provided on the top of the fixed plate, a filter plate fixed inside the main body, a cleaning assembly driven by a motor provided on one side of the filter plate, an opening and closing assembly provided on the bottom of the cleaning assembly, a limit frame fixed on the top of the main body, a blocking assembly provided inside the limit frame, the blocking assembly being rotatably connected to a first blocking plate and a second blocking plate, and a moving assembly provided on one side of the first blocking plate and the second blocking plate;

[0007] The sealing assembly includes a knob passing through the main body, the knob is provided with a plugging head through a threaded sleeve, a first spring is provided between the main body and the plugging head, one end of the first spring is fixed to the top of the plugging head, and the other end of the first spring is fixed to the inner wall of the main body.

[0008] Preferably, the cleaning assembly includes a first bevel gear arranged on the top of the main body, a motor is fixed to the top of the first bevel gear, a screw is fixed to the bottom end of the first bevel gear, and the screw passes through the main body, a lifting block is sleeved on the outer wall of the screw, and the lifting block is slidably connected to the filter plate, and two scrapers are slidably connected inside the lifting block.

[0009] Preferably, a second spring is provided inside the lifting block, and both ends of the second spring are fixedly connected to one side of the two scrapers respectively.

[0010] Preferably, the opening and closing assembly includes a first belt sleeved on the outer wall of the screw rod, the inner wall of the other end of the first belt is rotatably connected to a driving rod, and the driving rod passes through the main body, a first opening and closing door and a second opening and closing door are provided on one side of the driving rod, and a cavity is provided inside the main body to cooperate with the first opening and closing door and the second opening and closing door.

[0011] Preferably, a gear is fixed to the bottom end of the driving rod, a first rack is engaged on one side of the gear, and one side of the first rack is fixedly connected to the first opening and closing door, and a second rack is engaged on the other side of the gear, a connecting plate is fixed on one side of the second rack, and one side of the connecting plate is fixedly connected to the second opening and closing door.

[0012] Preferably, the sealing assembly includes a second bevel gear meshing with the first bevel gear, a connecting shaft is fixed to one side of the second bevel gear, a sliding ring is provided on the outer wall of the connecting shaft through a threaded sleeve, a connecting frame is fixed to one side of the sliding ring, a rotating shaft is provided at the central axis of the connecting frame, the rotating shaft is fixedly connected to the first sealing plate, and a first fixing rod is fixed to the bottom end of the rotating plate of the rotating shaft, a rotating ring is provided on the outer wall of the rotating shaft, the rotating ring is fixedly connected to the second sealing plate, and a second fixing rod is fixed to the top of the rotating ring fixing ring.

[0013] Preferably, a limit block is provided on the outer wall of the sliding ring, the limit frame is provided with a cavity for cooperating with the limit block to slide, the connecting frame is provided with a cavity for cooperating with the rotating shaft, and cavities for cooperating with the first fixing rod and the second fixing rod are provided on both sides of the interior of the connecting frame.

[0014] Preferably, the moving component includes two second belts sleeved on the rotating shaft and the outer wall of the rotating ring, the other end of the second belt is rotatably connected to the first bevel gear, one side of the first bevel gear is engaged with the second bevel gear, one end of the second bevel gear is fixed with a threaded rod, the outer wall of the threaded rod is sleeved with a connecting ring, and one side of the connecting ring is fixed with a push plate.

[0015] Preferably, a limit block is provided on the outer wall of the connecting ring, and the first blocking plate and the second blocking plate are both provided with cavities for sliding with the limit block, and the first blocking plate and the second blocking plate are both provided with cavities for placing the first bevel gear and the second bevel gear.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The second bevel gear rotates to drive the connecting shaft to rotate, and the rotation of the connecting shaft drives the sliding ring to move in the limit frame. The movement of the sliding ring drives the connecting frame to slide, and then drives the first fixed rod and the second fixed rod to move in the cavities opened on both sides of the connecting frame, thereby driving the rotating shaft and the rotating ring to rotate, so that the first sealing plate and the second sealing plate rotate to seal the oil sample inside the main body, thereby preventing the residual oil sample from slowly seeping out of the nozzle due to the release of system pressure or its own gravity after the valve is closed.

[0018] 2. The first bevel gear rotates to drive the screw to rotate, and then drives the lifting block to move. Two scrapers are arranged inside the lifting block, so that the scrapers are driven by the lifting block to remove dirt from the filter plate. The two scrapers are connected by a second spring, so that the scrapers adapt to the changes in the circular diameter of the filter plate as the lifting block moves, thereby enhancing the cleaning effect of the scrapers. At the same time, the first bevel gear drives the gear rack mechanism through the belt to synchronously open the first opening and closing door and the second opening and closing door, so that the dirt is automatically dropped and collected, avoiding the risk of blockage and improving the sampling efficiency.

[0019] 3. The rotation of the rotating shaft and the rotating ring respectively drives the first bevel gear to rotate through the second belt, and the rotation of the first bevel gear drives the second bevel gear engaged with it to rotate, and then drives the threaded rod to rotate, so that the connecting ring moves in the first sealing plate and the second sealing plate respectively. At the same time as the first sealing plate and the second sealing plate are closed, the push plate is driven to move synchronously to squeeze the residual oil sample, so that it flows toward the filter plate, eliminating the "dead volume" retained medium in the valve body, realizing the integration of sealing and pushing, and enhancing the overall sealing of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a side sectional view of the three-dimensional structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the sealing assembly of the present invention;

[0023] Figure 4 This is a schematic diagram of the filter plate and lifting block structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the main body and limit frame structure of the present invention;

[0025] Figure 6 This is a structural diagram of the connection between the filter plate and the main body of the present invention;

[0026] Figure 7 This is a schematic expanded view of the plugging assembly structure of the present invention;

[0027] Figure 8 This is a structural diagram of the connection between the second belt and the rotating shaft of the present invention;

[0028] Figure 9 For the present invention Figure 8 A schematic enlarged diagram of the structure at A;

[0029] Figure 10 This is a structural diagram of the connection between the lifting block and the scraper of the present invention;

[0030] Figure 11 This is a structural diagram of the connection between the first opening and closing door and the second opening and closing door of the present invention.

[0031] In the figure: 1, main body; 2, fixing plate; 301, knob; 302, first spring; 303, plug; 4, filter plate; 501, first bevel gear; 502, screw rod; 503, lifting block; 504, second spring; 505, scraper; 6, motor; 701, first belt; 702, driving rod; 703, first opening and closing door; 704, first rack; 705, gear; 706, second rack; 707, connecting plate; 70 8. Second opening and closing door; 801. Second bevel gear; 802. Connecting shaft; 803. Sliding ring; 804. Connecting frame; 805. Rotating shaft; 806. First fixed rod; 807. Rotating ring; 808. Second fixed rod; 9. Limiting frame; 10. First blocking plate; 11. Second blocking plate; 121. Second belt; 122. First bevel gear; 123. Second bevel gear; 124. Threaded rod; 125. Connecting ring; 126. Push plate. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1 to 11 The present invention provides a technical solution: a high-efficiency sealing valve under high-pressure environment, comprising a main body 1, a fixed plate 2 is fixed inside the main body 1, a sealing assembly is provided on the top of the fixed plate 2, a filter plate 4 is fixed inside the main body 1, a cleaning assembly driven by a motor 6 is provided on one side of the filter plate 4, an opening and closing assembly is provided on the bottom of the cleaning assembly, a limit frame 9 is fixed on the top of the main body 1, a blocking assembly is provided inside the limit frame 9, the blocking assembly is rotatably connected to a first blocking plate 10 and a second blocking plate 11, and a moving assembly is provided on one side of the first blocking plate 10 and the second blocking plate 11;

[0034] The sealing assembly includes a knob 301 that passes through the main body 1, and the knob 301 is provided with a plug head 303 through a threaded sleeve. A first spring 302 is provided between the main body 1 and the plug head 303, and one end of the first spring 302 is fixed to the top of the plug head 303, and the other end of the first spring 302 is fixed to the inner wall of the main body 1.

[0035] In the specific implementation, a sealing assembly is provided on the top of the fixed plate 2 fixed inside the main body 1, and the threaded plug 303 is driven up and down by rotating the knob 301. The elastic action of the first spring 302 is used to stabilize the movement of the plug 303 to realize the opening and closing of the infusion port and control the entry and exit of the oil sample. The cleaning assembly on one side of the filter plate 4 in the main body 1 is driven by the motor 6 to remove dirt from the filter plate 4, and the opening and closing assembly at the bottom of the cleaning assembly moves synchronously to deal with the dirt. The sealing assembly in the top limit frame 9 of the main body 1 is driven by the motor 6 to drive the first sealing plate 10 and the second sealing plate 11 to rotate and block the inside of the main body 1. At the same time, the residual oil sample is squeezed and pushed by the moving assembly during sealing to achieve sealing and residual oil sample processing after sampling.

[0036] As a further implementation scheme of the present invention, the cleaning component includes a first bevel gear 501 arranged at the top of the main body 1, a motor 6 is fixed to the top of the first bevel gear 501, a screw rod 502 is fixed to the bottom end of the first bevel gear 501, and the screw rod 502 passes through the main body 1, a lifting block 503 is sleeved on the outer wall of the screw rod 502, and the lifting block 503 is slidably connected to the filter plate 4, and two scrapers 505 are slidably connected inside the lifting block 503.

[0037] In the specific implementation, the motor 6 drives the first bevel gear 501 to rotate, driving the screw rod 502 fixed at the bottom end to rotate synchronously. The screw rod 502 causes the sleeved lifting block 503 to slide up and down along the filter plate 4 through threaded transmission. The two scrapers 505 inside the lifting block 503 move with it, and by sliding against the surface of the filter plate 4, dirt such as filter cake layer, solid particles, etc. attached to the filter plate 4 are removed.

[0038] As a further embodiment of the present invention, a second spring 504 is provided inside the lifting block 503 , and both ends of the second spring 504 are fixedly connected to one side of the two scrapers 505 .

[0039] In a specific implementation, the two ends of the second spring 504 inside the lifting block 503 are fixedly connected to the two scrapers 505 respectively. When the lifting block 503 slides along the filter plate 4, the elastic force of the second spring 504 enables the two scrapers 505 to adapt to the changes in the circular diameter of the filter plate 4, so that they always fit the filter plate 4 for cleaning, thereby enhancing the cleaning effect and adaptability of the filter plate 4.

[0040] As a further implementation scheme of the present invention, the opening and closing assembly includes a first belt 701 sleeved on the outer wall of the screw rod 502, and the inner wall of the other end of the first belt 701 is rotatably connected to a drive rod 702, and the drive rod 702 passes through the main body 1. A first opening and closing door 703 and a second opening and closing door 708 are provided on one side of the drive rod 702, and a cavity is opened inside the main body 1 to cooperate with the first opening and closing door 703 and the second opening and closing door 708.

[0041] In the specific implementation, when the screw rod 502 rotates, the driving rod 702 is driven to rotate synchronously through the first belt 701, and the driving rod 702 drives the first opening and closing door 703 and the second opening and closing door 708 to slide in the cavity inside the main body 1. Through the opening and closing of the first opening and closing door 703 and the second opening and closing door 708, the collection and discharge of dirt after cleaning the filter plate 4 is realized, and the automatic cleaning process of the filter plate 4 is completed in cooperation with the cleaning component.

[0042] As a further implementation scheme of the present invention, a gear 705 is fixed to the bottom end of the driving rod 702, and a first rack 704 is engaged on one side of the gear 705, and one side of the first rack 704 is fixedly connected to the first opening and closing door 703, and a second rack 706 is engaged on the other side of the gear 705, and a connecting plate 707 is fixed on one side of the second rack 706, and one side of the connecting plate 707 is fixedly connected to the second opening and closing door 708.

[0043] In the specific implementation, when the gear 705 at the bottom end of the driving rod 702 rotates with the driving rod 702, the first rack 704 and the second rack 706 on both sides of the meshing move at the same time, the first rack 704 drives the first opening and closing door 703 to move, and the second rack 706 drives the second opening and closing door 708 to move in the opposite direction through the connecting plate 707, so that the first opening and closing door 703 and the second opening and closing door 708 are opened and closed synchronously, thereby controlling the opening and closing of the internal cavity of the main body 1, and completing the discharge or retention of dirt after cleaning the filter plate 4.

[0044] As a further implementation scheme of the present invention, the sealing assembly includes a second bevel gear 801 meshing with the first bevel gear 501, a connecting shaft 802 is fixed on one side of the second bevel gear 801, a sliding ring 803 is provided on the outer wall of the connecting shaft 802 through a threaded sleeve, a connecting frame 804 is fixed on one side of the sliding ring 803, a rotating shaft 805 is provided at the center axis of the connecting frame 804, the rotating shaft 805 is fixedly connected to the first sealing plate 10, and a first fixed rod 806 is fixed to the bottom end of the rotating plate of the rotating shaft 805, a rotating ring 807 is provided on the outer wall of the rotating shaft 805, the rotating ring 807 is fixedly connected to the second sealing plate 11, and a second fixed rod 808 is fixed to the top of the fixed ring of the rotating ring 807.

[0045] In the specific implementation, the motor 6 drives the first bevel gear 501 to rotate, and the second bevel gear 801 meshing with it rotates accordingly, driving the connecting shaft 802 fixed on one side to rotate. The connecting shaft 802 causes the sleeved sliding ring 803 to move axially through threaded transmission, and the sliding ring 803 drives the connecting frame 804 to move synchronously. The first fixed rod 806 fixed by the rotating shaft 805 and the second fixed rod 808 fixed by the rotating ring 807 slide in the cavity opened by the connecting frame 804 as it moves, driving the rotating shaft 805 and the rotating ring 807 at the center axis of the connecting frame 804 to drive the first sealing plate 10 and the second sealing plate 11 to rotate, thereby realizing the blocking of the inside of the main body 1 and ensuring that the first sealing plate 10 and the second sealing plate 11 rotate and close synchronously.

[0046] As a further implementation scheme of the present invention, a limit block is provided on the outer wall of the sliding ring 803, the limit frame 9 is provided with a cavity for cooperating with the limit block to slide, the connecting frame 804 is provided with a cavity for cooperating with the rotating shaft 805, and cavities are provided on both sides of the interior of the connecting frame 804 for cooperating with the first fixed rod 806 and the second fixed rod 808.

[0047] In the specific implementation, the sliding ring 803 slides in the cavity of the limit frame 9 through the outer wall limit block, ensuring its axial linear movement along the connecting shaft 802; the connecting frame 804 slides with the first fixed rod 806 and the second fixed rod 808 through the internal cavities on both sides, converting the linear motion of the sliding ring 803 into the rotational motion of the rotating shaft 805 and the rotating ring 807, thereby driving the first sealing plate 10 and the second sealing plate 11 to rotate synchronously, thereby realizing the sealing action inside the main body 1.

[0048] As a further implementation scheme of the present invention, the moving component includes two second belts 121 sleeved on the outer wall of the rotating shaft 805 and the rotating ring 807, the other end of the second belt 121 is rotatably connected to the first bevel gear 122, one side of the first bevel gear 122 is engaged with the second bevel gear 123, one end of the second bevel gear 123 is fixed with a threaded rod 124, the outer wall of the threaded rod 124 is sleeved with a connecting ring 125, and one side of the connecting ring 125 is fixed with a push plate 126.

[0049] In a specific implementation, when the rotating shaft 805 and the rotating ring 807 rotate, the second belt 121 through the outer wall drives the first bevel gear 122 to rotate, and the first bevel gear 122 engages to drive the second bevel gear 123 and the fixed threaded rod 124 to rotate, so that the connecting ring 125 mounted on the threaded rod 124 moves axially, thereby driving the push plate 126 to move synchronously, thereby squeezing and pushing the residual oil sample in the main body 1, and coordinating with the rotation of the sealing plate to complete the integrated function of sealing and pushing the sample.

[0050] See also Figure 6-Figure 9The rotation of the connecting shaft 802 drives the sliding ring 803 threadedly connected thereto to move, and the sliding ring 803 drives the connecting frame 804 to move, and the cavity opened by the connecting frame 804 drives the rotating shaft 805 and the rotating ring 807 to rotate, so that the first sealing plate 10 and the second sealing plate 11, which are initially perpendicular to the filter plate 4, rotate to a position parallel to the filter plate 4, thereby sealing the liquid inside the main body 1. When the rotating shaft 805 and the rotating ring 807 rotate so that the first sealing plate 10 and the second sealing plate 11 seal the pipeline of the main body 1, the rotating shaft 805 and the rotating ring 807 drive the second belt 121 on the outer wall to seal the pipeline of the main body 1. The first bevel gear 122 rotates, and through the cooperation of the first bevel gear 122, the second bevel gear 123, the threaded rod 124 and the connecting ring 125, the push plate 126 moves in the direction away from the first sealing plate 10 and the second sealing plate 11, that is, moves in the direction of the filter plate 4, giving a thrust to the residual oil sample that still remains in the first sealing plate 10 and the second sealing plate 11 on the side close to the filter plate 4 during the sealing process, so that the oil sample flows toward the position of the filter plate 4 to the cavity opened in the main body 1 after the first opening and closing door 703 and the second opening and closing door 708 are opened, thereby avoiding sealing failure caused by the release of pressure of the residual oil sample inside the main body 1.

[0051] As a further implementation scheme of the present invention, a limit block is provided on the outer wall of the connecting ring 125, and the first sealing plate 10 and the second sealing plate 11 are both provided with a cavity for cooperating with the limit block to slide, and the first sealing plate 10 and the second sealing plate 11 are both provided with a cavity for placing the first bevel gear 122 and the second bevel gear 123.

[0052] In the specific implementation, the connecting ring 125 slides in the cavity of the first sealing plate 10 and the second sealing plate 11 through the outer wall limit block, ensuring its stable axial movement along the threaded rod 124; the internal cavity of the first sealing plate 10 and the second sealing plate 11 provides installation space for the first bevel gear 122 and the second bevel gear 123, so that the transmission assembly can rotate synchronously with the sealing plate. At the same time, the movement accuracy of the connecting ring 125 and the push plate 126 is guaranteed by the limiting structure, so that the push plate 126 can achieve stable squeezing and pushing of the residual oil sample, and cooperate with the sealing action.

[0053] Working Principle: When using this petrochemical sealed sampling valve, the main body 1 is fixedly connected to the petrochemical device via a flange. The knob 301 is manually turned. The knob 301 rotates through the thread on its outer wall, driving the plug 303 upward (the plug 303 penetrates the fixed part inside the main body 1 and slides between the fixed part). The upward movement of the plug 303 opens the infusion port provided on the fixed plate 2. At this time, the oil sample flows from the petrochemical device through the infusion port and out of the nozzle of the main body 1 for sampling.

[0054] When the sampling is completed, the knob 301 is turned, and the knob 301 drives the plugging head 303 to plug the infusion port opened on the fixed plate 2. The oil sample is forcibly cut off through the plugging head 303, and some oil sample will still remain in the main body 1. The motor 6 is started, and the first bevel gear 501 is driven to rotate by the motor 6, and then the second bevel gear 801 engaged with it is driven to rotate. The rotation of the second bevel gear 801 drives the connecting shaft 802 fixedly connected to one side to rotate. The rotation of the connecting shaft 802 drives the sliding ring 803 in the limit frame 9 through the thread opened on its outer wall. The sliding ring 803 moves inside the main body 1, and the movement of the connecting frame 804 drives the first fixed rod 806 and the second fixed rod 808 to move in the cavities opened on both sides of the connecting frame 804. This drives the rotating shaft 805 and the rotating ring 807 to rotate, and further drives the first blocking plate 10 and the second blocking plate 11 to rotate, thereby sealing the residual oil sample in the main body 1. This prevents the residual oil sample from slowly seeping out of the nozzle due to the release of system pressure or its own gravity after the valve is closed, which poses a huge threat to production safety.

[0055] When the rotating shaft 805 and the rotating ring 807 rotate, they respectively drive the first bevel gear 122 to rotate through the second belt 121, and the rotation of the first bevel gear 122 drives the meshed second bevel gear 123 to rotate, thereby driving the threaded rod 124 fixedly connected to one side thereof to rotate. The rotation of the threaded rod 124 causes the connecting ring 125 to move in the first blocking plate 10 and the second blocking plate 11 respectively, thereby driving the push plate 126 fixedly connected to the connecting ring 125 to move, so that the first blocking plate 10 and the second blocking plate 11 are closed and at the same time drive the push plate 126 to squeeze and push the oil sample remaining in the main body 1, so that the oil sample flows to the position of the filter plate 4, realizing the integration of blocking and sample pushing, enhancing the overall sealing of the valve, and avoiding sealing failure caused by the release of residual medium pressure inside the main body 1;

[0056] When the first bevel gear 501 rotates, it drives the screw rod 502 to rotate, and the screw rod 502 rotates to drive the lifting block 503 set on its outer wall to move, and two scrapers 505 are provided inside the lifting block 503, which drive the scrapers 505 to remove dirt on the filter plate 4 through the lifting block 503, and the two scrapers 505 are connected by a second spring 504, so that the scrapers 505 adapt to the change of the diameter of the filter plate 4 as the lifting block 503 moves, and when the first bevel gear 501 rotates, it drives the driving rod 702 to rotate through the first belt 701, and the driving rod 702 rotates to drive the gear 705 at its bottom end The first rack 704 and the second rack 706 on both sides thereof are meshed and rotated, thereby driving the movement of the first rack 704 and the movement of the first opening and closing door 703, and the movement of the second rack 706 drives the second opening and closing door 708 to move through the connecting plate 707, so that the dirt scraped off by the filter plate 4 falls from the cavity opened by the first opening and closing door 703 and the second opening and closing door 708, and the oil sample remaining in the main body 1 also flows into the storage chamber opened at the bottom of the main body 1, and a movable extractable filter is provided in the storage chamber to intercept the dirt, and the filtered oil sample flows into the petrochemical device through the pipeline for recycling.

[0057] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-efficiency sealing valve under high-pressure environment, comprising a main body (1), characterized in that: A fixing plate (2) is fixed inside the main body (1), a sealing component is provided on the top of the fixing plate (2), a filter plate (4) is fixed inside the main body (1), a cleaning component driven by a motor (6) is provided on one side of the filter plate (4), an opening and closing component is provided on the bottom of the cleaning component, a limiting frame (9) is fixed on the top of the main body (1), a blocking component is provided inside the limiting frame (9), the blocking component is rotatably connected to a first blocking plate (10) and a second blocking plate (11), and a moving component is provided on one side of the first blocking plate (10) and the second blocking plate (11); The sealing assembly comprises a knob (301) passing through the main body (1), the knob (301) being provided with a plug (303) through a threaded sleeve, a first spring (302) being provided between the main body (1) and the plug (303), one end of the first spring (302) being fixed to the top end of the plug (303), and the other end of the first spring (302) being fixed to the inner wall of the main body (1); The cleaning assembly comprises a first bevel gear (501) arranged at the top of the main body (1), a motor (6) being fixed to the top of the first bevel gear (501), a screw rod (502) being fixed to the bottom of the first bevel gear (501), and the screw rod (502) passing through the main body (1), a lifting block (503) being sleeved on the outer wall of the screw rod (502), and the lifting block (503) being slidably connected to the filter plate (4), and two scrapers (505) being slidably connected inside the lifting block (503); The blocking assembly comprises a second bevel gear (801) meshing with the first bevel gear (501); a connecting shaft (802) is fixed to one side of the second bevel gear (801); a sliding ring (803) is provided on the outer wall of the connecting shaft (802) through a threaded sleeve; a connecting frame (804) is fixed to one side of the sliding ring (803); a rotating shaft (805) is provided at the central axis of the connecting frame (804); the rotating shaft (805) is fixedly connected to the first blocking plate (10); a first fixing rod (806) is fixed to the bottom end of the rotating plate of the rotating shaft (805); a rotating ring (807) is provided on the outer wall of the rotating shaft (805); the rotating ring (807) is fixedly connected to the second blocking plate (11); and a second fixing rod (808) is fixed to the top end of the fixed ring of the rotating ring (807); The moving assembly comprises two second belts (121) sleeved on the outer wall of the rotating shaft (805) and the rotating ring (807); the other end of the second belt (121) is rotatably connected to a first bevel gear (122); one side of the first bevel gear (122) is meshed with a second bevel gear (123); one end of the second bevel gear (123) is fixed with a threaded rod (124); the outer wall of the threaded rod (124) is sleeved with a connecting ring (125); and one side of the connecting ring (125) is fixed with a push plate (126).

2. The high-efficiency sealing valve under high pressure environment according to claim 1, characterized in that: A second spring (504) is provided inside the lifting block (503), and both ends of the second spring (504) are fixedly connected to one side of the two scrapers (505).

3. The high-efficiency sealing valve under high pressure environment according to claim 2, characterized in that: The opening and closing assembly comprises a first belt (701) sleeved on the outer wall of the screw rod (502); the inner wall of the other end of the first belt (701) is rotatably connected to a driving rod (702), and the driving rod (702) passes through the main body (1); a first opening and closing door (703) and a second opening and closing door (708) are provided on one side of the driving rod (702); and a cavity is provided inside the main body (1) to cooperate with the first opening and closing door (703) and the second opening and closing door (708).

4. The high-efficiency sealing valve under high pressure environment according to claim 3, characterized in that: A gear (705) is fixed to the bottom end of the driving rod (702), one side of the gear (705) is meshed with a first rack (704), one side of the first rack (704) is fixedly connected to the first opening and closing door (703), and the other side of the gear (705) is meshed with a second rack (706), one side of the second rack (706) is fixed with a connecting plate (707), and one side of the connecting plate (707) is fixedly connected to the second opening and closing door (708).

5. The high-efficiency sealing valve under high pressure environment according to claim 1, characterized in that: The outer wall of the sliding ring (803) is provided with a limit block, the limit frame (9) is provided with a cavity for sliding with the limit block, the connecting frame (804) is provided with a cavity for cooperating with the rotating shaft (805), and cavities for cooperating with the first fixing rod (806) and the second fixing rod (808) are provided on both sides of the interior of the connecting frame (804).

6. The high-efficiency sealing valve for high-pressure environments according to claim 1, characterized in that: A limit block is provided on the outer wall of the connecting ring (125); the first blocking plate (10) and the second blocking plate (11) are both provided with cavities for sliding with the limit block; and the first blocking plate (10) and the second blocking plate (11) are both provided with cavities for placing the first bevel gear (122) and the second bevel gear (123).

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