A strong sealing biocontainment valve

Abstract

The present application relates to the field of valve, provide a kind of strong sealing biological sealing valve, valve ring, and the blade matched with valve ring and the driving source of driving blade rotation, also include: rotating shaft, one end is connected with blade, and the axis of rotating shaft and the axis of driving source coincide;Hollow sealing portion, is installed on valve ring, and rotating shaft extends to the inside of sealing portion through valve ring;Rotating disc, is connected with rotating shaft, is located in sealing portion, and two arc grooves are opened in the side wall of rotating disc away from rotating shaft, and the bottom wall of arc groove is steep slope shape;Sealing plate, is located in sealing portion, with sealing portion movable seal.This application can automatically adjust the air pressure in annular air bag in use, increase pressure when closing blade, improve sealing performance, and also can gradually adjust pressure, thereby reduce the friction suffered by annular air bag, prolong its service life.

Description

Technical Field

[0001] This invention relates to the field of valves, and more specifically to a strong-sealing biological shut-off valve. Background Technology

[0002] Sealing valves are mainly used in the supply and exhaust systems of biosafety facilities such as high-level biosafety laboratories and biopharmaceutical production workshops. They can effectively solve the problems of isolation and sealing of pipelines and equipment, as well as isolation between protective facilities and the external environment.

[0003] However, in the existing technology, the repeated opening and closing of the closed valve causes repeated friction at the connection between the blade and the inner wall of the valve ring, resulting in damage to the edge of the blade. This leads to insufficient tightness in the connection between the blade and the inner wall of the valve ring, resulting in poor sealing.

[0004] Therefore, we propose a highly sealing biological shut-off valve. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a highly sealing biological valve that solves the technical problem of insufficient tightness in the connection between the blade and the inner wall of the valve ring after repeated friction.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A highly sealed biological shut-off valve includes a valve ring, blades mated to the valve ring, and a drive source for rotating the blades, and further includes:

[0010] The shaft is connected to the blade at one end, and the axis of the shaft coincides with the axis of the drive source.

[0011] A hollow sealing part is installed on the valve ring, and the rotating shaft extends through the valve ring into the sealing part;

[0012] The turntable, connected to the rotating shaft, is located inside the sealing part, and two arc-shaped grooves are opened on the side wall of the turntable away from the rotating shaft, with the bottom wall of the arc-shaped grooves being steeply sloped.

[0013] The sealing plate is located in the sealing part and is movable and seals with the sealing part.

[0014] A guide rod is mounted on the sealing plate, with one end of the guide rod extending into the arc-shaped groove and contacting the bottom wall of the arc-shaped groove;

[0015] An elastic element is disposed between the sealing plate and the sealing part, and the elastic element deforms when the sealing plate moves;

[0016] The conduit passes through the sealing plate, the turntable, and the rotating shaft, and is movably sealed with the sealing plate, and rotates and seals with the turntable and the rotating shaft;

[0017] The air guide hole is located on the blade, and the guide tube passes through the air guide hole and rotates to seal it.

[0018] The flow divider hole is connected to the air guide hole;

[0019] An annular airbag is wrapped around the annular sidewall of the blade and communicates with the diversion hole.

[0020] In a further embodiment, the annular airbag includes two through holes, which are not connected to the interior of the annular airbag. One through hole is used to pass through a rotating shaft and is rotated and sealed with the rotating shaft. The rotating shaft is integrally formed with the blade. The other through hole is used to pass through the drive shaft of the drive source and is rotated and sealed with the drive shaft.

[0021] In a further embodiment, the blade includes an annular base and two protrusions, the two protrusions being located on the parallel two sides of the annular base respectively, and the annular airbag being fixedly connected to the annular base, with the annular airbag located between the two protrusions.

[0022] The protrusion includes a bottom surface, a plane surface, and two arc surfaces. The bottom surface is in contact with the annular base, and the two sides of the bottom surface are connected to an arc surface respectively. A plane surface connects the two arc surfaces.

[0023] In a further embodiment, the flow divider includes a flow divider, a flow guide, and a branch flow.

[0024] The flow divider is located inside the blade and is connected to the guide tube. A flow divider surface is provided on the flow divider.

[0025] The flow guide is located inside the flow divider and at the air outlet of the duct, and the flow guide is provided with a first step, a second step and a third step.

[0026] One end of the branch orifice is connected to the diversion section, and the other end is evenly distributed in the inner ring of the annular airbag. The branch orifice includes a first branch orifice, a second branch orifice, and a third branch orifice.

[0027] Wherein, the first step is configured such that part of the airflow blown out of the duct flows into the first branch hole after passing through the first step, the second step is configured such that part of the airflow blown out of the duct flows into the second branch hole after passing through the second step and the splitting surface, and the prime third step is configured such that part of the airflow blown out of the duct flows into the third branch hole after passing through the third step and the splitting surface.

[0028] In a further embodiment, the sealing part is provided with a guide post, which penetrates the sealing plate and is movably sealed at the connection with the sealing plate.

[0029] In a further embodiment, the sealing part is further provided with a pressure regulating component, the pressure regulating component is connected to a vent pipe, and the vent pipe is in communication with the sealing part.

[0030] In a further embodiment, the pressure regulating assembly includes a pressure regulating box, a piston is disposed inside the pressure regulating box, a screw is rotatably connected to the upper side of the piston, a nut is disposed on the pressure regulating box, the screw passes through the side wall of the pressure regulating box and is threadedly connected to the nut, a column is fixedly connected to the piston, and a through hole is opened on the pressure regulating box, with the column fitting against the inner wall of the through hole.

[0031] In a further embodiment, a slider is connected to the side wall of the guide rod, and a sliding groove is provided on the inner wall of the arc-shaped groove. The slider is slidably connected along the sliding groove, and the trajectory of the sliding groove is the same as the trajectory of the bottom wall of the arc-shaped groove.

[0032] (III) Beneficial Effects

[0033] This invention provides a highly airtight biological sealing valve. Compared with the prior art, it has the following advantages:

[0034] 1. When the blades rotate, the gas between the sealing part and the annular air bag can flow between them through the cooperation of the guide rod and the turntable. When the valve is closed, the gas in the sealing part is squeezed into the annular air bag, increasing the tightness of the connection between the annular air bag, the blades and the valve ring, thereby improving the sealing effect. When the valve is opened, the gas in the annular air bag will return to the sealing part, thereby reducing the pressure between the annular air bag and the inner wall of the valve ring, reducing the friction on the annular air bag and the inner wall of the valve ring, thus protecting the service life of the valve ring and the annular air bag, and ensuring that it still has a good sealing effect after long-term use. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0037] Figure 2 This is a schematic diagram of the structure of the blades of the present invention when fully opened.

[0038] Figure 3 This is a schematic diagram of the fully closed blade structure of the present invention.

[0039] Figure 4This is a schematic diagram of the connection structure between the sealing part and the pressure regulating component.

[0040] Figure 5 This is a schematic diagram showing the flow direction of the airflow from the duct as it passes through the guide section and flows into the branch orifice.

[0041] Figure 6 This is a schematic diagram of the flow guide section.

[0042] Figure 7 This is a schematic diagram of the side structure of the base and the protrusion.

[0043] Figure 8 This is a schematic diagram of the three-dimensional structure of the base and the protrusion.

[0044] Figure 9 This is a schematic diagram of the connection structure between the turntable and the sealing plate.

[0045] Figure 10 This is a schematic diagram of the turntable.

[0046] Figure 11 This is a three-dimensional structural diagram showing the connection between the shaft, turntable, and conduit.

[0047] Figure 12 This is a schematic diagram of the internal structure connecting the shaft, turntable, and conduit.

[0048] The attached figures are labeled as follows:

[0049] 10 Valve ring, 11 Blade, 111 Base, 112 Protrusion, 1121 Bottom surface, 1122 Plane, 1123 Arc surface;

[0050] 12 driving sources;

[0051] 20. Rotary shaft, 21. Sealing part, 22. Turntable, 23. Arc groove, 24. Sealing plate, 25. Guide rod, 26. Elastic element, 27. Conduit, 28. Annular airbag;

[0052] 30. Flow splitting orifice, 31. Flow splitting section, 311. Flow splitting surface, 32. Flow guiding section, 321. First step, 322. Second step, 323. Third step, 33. Branch orifice, 331. First branch orifice, 332. Second branch orifice, 333. Third branch orifice;

[0053] 40 Through-hole section, 41 Guide post, 42 Vent pipe;

[0054] 50. Voltage regulating assembly; 51. Voltage regulating box; 52. Piston; 53. Screw; 54. Nut; 55. Column;

[0055] 60 slider, 61 groove. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. 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 those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] This application provides a strong-sealing biological sealing valve, which solves the problem that the blade 11 is easily damaged by repeated opening and closing. In use, it increases the sealing performance of the connection between the valve ring 10 and the blade 11.

[0058] The technical solution in this application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0059] When the valve is closed, the gas in the sealing part 21 is forced into the annular air bag 28, increasing the tightness of the connection between the annular air bag 28, the fan blade, and the valve ring 10, thereby improving the sealing effect. When the valve is opened, the gas in the annular air bag 28 returns to the sealing part 21, thereby reducing the pressure between the annular air bag 28 and the inner wall of the valve ring 10, reducing the friction on the annular air bag 28 and the inner wall of the valve ring 10, thus protecting the service life of the valve ring 10 and the annular air bag 28, and ensuring that it still has a good sealing effect after long-term use.

[0060] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0061] A highly sealed biological valve includes a valve ring 10, blades 11 that match the valve ring 10, and a drive source 12 for rotating the blades 11. It also includes: a rotating shaft 20, one end of which is connected to the blades 11, and the axis of the rotating shaft 20 coincides with the axis of the drive source 12; a hollow sealing part 21, mounted on the valve ring 10, with the rotating shaft 20 extending through the valve ring 10 into the sealing part 21; a rotating disk 22, connected to the rotating shaft 20 and located within the sealing part 21, with two arc-shaped grooves 23 formed on the side wall of the rotating disk 22 away from the rotating shaft 20, the bottom wall of the arc-shaped grooves 23 being steeply sloped; a sealing plate 24, located within the sealing part 21, and movably sealing with the sealing part 21; and a guide rod. 25, installed on the sealing plate 24, with one end of the guide rod 25 extending into the arc groove 23 and contacting the bottom wall of the arc groove 23; elastic element 26, disposed between the sealing plate 24 and the sealing part 21, and deformed when the sealing plate 24 moves; conduit 27, passing through the sealing plate 24, the turntable 22 and the rotating shaft 20, and movably sealed with the sealing plate 24, and rotatably sealed with the turntable 22 and the rotating shaft 20; air guide hole, opened on the blade 11, the conduit 27 passing through the air guide hole and rotatably sealed; diversion hole 30, communicating with the air guide hole; annular airbag 28, wrapped around the annular sidewall of the blade 11 and communicating with the diversion hole 30.

[0062] The elastic element 26 can be a spring, a sheet, or the like. The conduit 27 can be a metal conduit or a rubber tube as needed. The metal tube has low friction, ensuring stability when the sealing plate 24 moves, while the rubber tube has good sealing performance, preventing gas from entering the other side of the sealing plate 24 and the sealing part 21.

[0063] In a further embodiment, the annular airbag 28 includes two through holes 40, and the through holes 40 are not connected to the interior of the annular airbag 28. One through hole 40 is used to pass through the rotating shaft 20 and rotate to seal with the rotating shaft 20. The rotating shaft 20 is integrally formed with the blade 11. The other through hole is used to pass through the drive shaft of the drive source 12 and rotate to seal with the drive shaft.

[0064] The through-hole 40 ensures stable rotation of the shaft 20 and the drive shaft of the drive source 12, while preventing gas leakage in the annular airbag 28. Furthermore, the integrated design ensures a sufficiently tight and stable connection between the shaft 20 and the blade 11, preventing any leakage issues.

[0065] In a further embodiment, the blade 11 includes an annular base 111 and two protrusions 112, the two protrusions 112 being located on the parallel two-sided edges of the annular base 111 respectively, and the annular airbag 28 being fixedly connected to the annular base 111, and the annular airbag 28 being located between the two protrusions 112.

[0066] The protrusion 112 includes a bottom surface 1121, a plane 1122 and two arc surfaces 1123. The bottom surface 1121 is in contact with the annular base 111, and the two sides of the edge of the bottom surface 1121 are respectively connected to an arc surface 1123. The plane 1122 connects the two arc surfaces 1123.

[0067] In this way, the protrusion 112 can cooperate with the annular airbag 28 to form multiple sealing parts 21, thereby improving the sealing effect.

[0068] The protrusion 112 reduces the friction force on the blade 11 when it contacts the valve ring 10, thus protecting the safety of the valve ring 10 and the blade 11.

[0069] By setting the plane 1122, the blade 11 can have a larger contact area when it contacts the inner wall of the valve ring 10, resulting in a better sealing effect.

[0070] In a further embodiment, the diversion orifice 30 includes a diversion section 31, a guide section 32, and a branch orifice 33;

[0071] The flow divider 31 is formed inside the blade 11, the flow divider 31 is connected to the guide tube 27, and the flow divider 31 is provided with a flow divider surface 311;

[0072] The flow guide 32 is located inside the flow divider 31 and at the air outlet of the duct 27, and the flow guide 32 is provided with a first step 321, a second step 322 and a third step 323.

[0073] One end of the branch hole 33 is connected to the diversion section 31, and the other end is evenly distributed in the inner ring of the annular airbag 28. The branch hole 33 includes a first branch hole 331, a second branch hole 332 and a third branch hole 333.

[0074] Specifically, the first step 321 is configured such that a portion of the airflow blown out from the conduit 27 flows into the first branch hole 331 after passing through the first step 321; the second step 322 is configured such that a portion of the airflow blown out from the conduit 27 flows into the second branch hole 332 after passing through the second step 322 and the splitting surface 311; and the prime number third step 323 is configured such that a portion of the airflow blown out from the conduit 27 flows into the third branch hole 333 after passing through the third step 323 and the splitting surface 311.

[0075] By setting the flow guide 32, the airflow can be uniformly and quickly introduced into multiple branch holes 33, so that the airflow enters the annular airbag 28 evenly. This setting makes the annular airbag 28 expand evenly when it expands, thereby avoiding a part of the annular airbag 28 from expanding too fast and thus generating greater friction with the inner wall of the valve ring 10, protecting the safety of the valve ring 10 and the annular airbag 28.

[0076] In a further embodiment, a guide post 41 is provided in the sealing part 21. The guide post 41 penetrates the sealing plate 24 and is movably sealed at the connection with the sealing plate 24.

[0077] By setting the guide post 41, it can be ensured that the sealing plate 24 moves along the trajectory of the guide post 41 when it moves. The guide post 41 is set parallel to the inner wall of the sealing part 21.

[0078] In a further embodiment, a pressure regulating component 50 is also provided on the sealing part 21, and the pressure regulating component 50 is connected to a vent pipe 42, which is in communication with the sealing part 21.

[0079] The pressure regulating component 50 allows for manual adjustment of the airflow into the annular airbag 28, thereby changing the degree of expansion of the annular airbag 28 and the friction between the inner wall of the valve ring 10 and the annular airbag 28. This setup allows for adjustment of the sealing degree between the valve ring 10 and the annular airbag 28 without opening the valve, making it convenient to use.

[0080] In use, the pressure regulating component 50 can be set to manual or automatic mode, and the piston 52 can also be moved by hydraulic rods, electric rods, etc.

[0081] In a further embodiment, the pressure regulating assembly 50 includes a pressure regulating box 51, a piston 52 is disposed inside the pressure regulating box 51, a screw 53 is rotatably connected to the upper side of the piston 52, a nut 54 is disposed on the pressure regulating box 51, the screw 53 passes through the side wall of the pressure regulating box 51 and is threadedly connected to the nut 54, a column 55 is fixedly connected to the piston 52, and a through hole is opened on the pressure regulating box 51, with the column 55 fitting against the inner wall of the through hole.

[0082] During manual adjustment, by rotating the screw 53, and with the cooperation of the nut 54, the screw 53 and the piston 52 are moved, changing the space between the piston 52 and the bottom wall of the pressure regulating box 51. In this way, the gas in the sealing part 21 and the airbag can enter the pressure regulating box 51, thereby realizing the adjustment of the change in air pressure in the annular airbag 28.

[0083] In a further embodiment, a slider 60 is connected to the side wall of the guide rod 25, and a groove 61 is provided on the inner wall of the arc groove 23. The slider 60 is slidably connected along the groove 61, and the trajectory of the groove 61 is the same as the trajectory of the bottom wall of the arc groove 23.

[0084] By utilizing the slider 60 and the groove 61, it is ensured that when the turntable 22 rotates, it can drive the slider 60 to slide along the inner wall of the groove 61, thereby enabling the slider 60 to push the guide rod 25 to move, which in turn enables the guide rod 25 to drive the sealing plate 24 to move. This arrangement can stably drive the sealing plate 24 to move back and forth during both forward and reverse rotation, increasing the speed of the sealing plate 24's movement. Furthermore, it can stably cooperate with the elastic element 26, so that the elastic element 26 is subjected to less pressure, thereby extending the service life of the elastic element 26.

[0085] When the valve is closed, the drive source 12 drives the vane 11 to rotate, the vane 11 drives the shaft 20 to rotate, and the shaft 20 drives the turntable 22 to rotate. The bottom wall of the arc groove 23 in the turntable 22 abuts against the guide rod 25, causing the guide rod 25 to push the sealing plate 24 to move. The sealing plate 24 compresses the elastic element 26, and the gas between the sealing plate 24 and the sealing part 21 is compressed. The gas passes through the conduit 27, enters the diversion hole 30, and enters the annular airbag 28 along the diversion hole 30, thereby increasing the gas in the annular airbag 28 and increasing the pressure. In this way, the annular airbag 28 can... A better sealing connection is formed between the valve ring 10 and the inner wall of the valve ring 10. Moreover, during the rotation of the blade 11, the air pressure in the annular airbag 28 gradually increases. Therefore, during the closing process of the blade 11, the friction between the annular airbag 28 and the inner wall of the valve ring 10 does not increase at the beginning, but only when the annular airbag 28 is about to close with the valve ring 10. As a result, the friction between the valve ring 10 and the blade 11 is greatly reduced, thereby protecting the safety of the valve ring 10 and the blade 11 during use and ensuring that no significant wear will occur after long-term use.

[0086] When the sealing plate 24 moves, it can compress the gas into the conduit 27 and enter the diversion hole 30 along the conduit 27. The airflow from the conduit 27 first passes through the guide section 32 and is affected by the guide section 32, the first step 321, the second step 322 and the third step 323. The airflow can flow to the first branch hole 331 and the guide surface respectively. The gas flowing to the guide surface will change its flow direction under the action of the guide surface, so the airflow will enter the second branch hole 332 and the third branch hole 333. In this way, the airflow from the conduit 27 will pass through the guide section 32 and enter the first branch hole 331, the second branch hole 332 and the third branch hole 333 respectively, so that it can evenly enter all parts of the annular airbag 28, so that the annular airbag 28 can expand evenly and quickly, thereby avoiding rapid expansion in one place. In this way, the friction between the annular airbag 28 and the inner wall of the valve ring 10 will also be more evenly distributed, protecting the annular airbag 28 for safe use.

[0087] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0088] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A highly sealing biological shut-off valve, characterized in that, Includes valve ring (10) and blade (11) that matches valve ring (10). The drive source (12) that drives the blade (11) to rotate also includes: A rotating shaft (20) is connected at one end to a blade (11), and the axis of the rotating shaft (20) coincides with the axis of the drive source (12); A hollow sealing part (21) is installed on the valve ring (10), and the rotating shaft (20) extends through the valve ring (10) into the sealing part (21); The turntable (22) is connected to the rotating shaft (20) and is located inside the sealing part (21). Two arc-shaped grooves (23) are opened on the side wall of the turntable (22) away from the rotating shaft (20). The bottom wall of the arc-shaped grooves (23) is steeply sloped. The sealing plate (24) is located in the sealing part (21) and is movable and sealed with the sealing part (21); A guide rod (25) is installed on the sealing plate (24), and one end of the guide rod (25) extends into the arc groove (23) and contacts the bottom wall of the arc groove (23); An elastic element (26) is disposed between the sealing plate (24) and the sealing part (21), and the elastic element (26) deforms when the sealing plate (24) moves; The conduit (27) passes through the sealing plate (24), the turntable (22) and the rotating shaft (20), and is movably sealed with the sealing plate (24), and rotates and seals with the turntable (22) and the rotating shaft (20); An air guide hole is provided on the blade (11), and a guide tube (27) passes through the air guide hole and rotates to seal it; The flow divider hole (30) is connected to the air guide hole; An annular airbag (28) is wrapped around the annular sidewall of the blade (11) and communicates with the diversion hole (30); The diversion orifice (30) includes a diversion section (31), a guide section (32), and a branch orifice (33). The flow divider (31) is located inside the blade (11), and the flow divider (31) is connected to the guide tube (27). The flow divider (31) is provided with a flow divider surface (311). The guide section (32) is located inside the diversion section (31) and at the air outlet of the duct (27), and the guide section (32) is provided with a first step (321), a second step (322) and a third step (323). One end of the branch hole (33) is connected to the diversion section (31), and the other end is evenly distributed in the inner ring of the annular airbag (28). The branch hole (33) includes a first branch hole (331), a second branch hole (332) and a third branch hole (333). Wherein, the first step (321) is configured to allow part of the airflow blown out from the conduit (27) to flow into the first branch hole (331) after passing through the first step (321), the second step (322) is configured to allow part of the airflow blown out from the conduit (27) to flow into the second branch hole (332) after passing through the second step (322) and the splitting surface (311), and the third step (323) is configured to allow part of the airflow blown out from the conduit (27) to flow into the third branch hole (333) after passing through the third step (323) and the splitting surface (311).

2. The sealing valve as described in claim 1, characterized in that, The annular airbag (28) includes two through holes (40), and the through holes (40) are not connected to the interior of the annular airbag (28). One through hole (40) is used to pass through the rotating shaft (20) and rotates and seals with the rotating shaft (20). The rotating shaft (20) is integrally formed with the blade (11). The other through hole is used to pass through the drive shaft of the drive source (12) and rotates and seals with the drive shaft.

3. The sealing valve as described in claim 1, characterized in that, The blade (11) includes an annular base (111) and two protrusions (112). The two protrusions (112) are located on the parallel two sides of the annular base (111). The annular airbag (28) is fixedly connected to the annular base (111) and is located between the two protrusions (112). The protrusion (112) includes a bottom surface (1121), a plane (1122) and two arc surfaces (1123). The bottom surface (1121) is in contact with the annular base (111), and the two sides of the edge of the bottom surface (1121) are respectively connected to an arc surface (1123). The plane (1122) is connected between the two arc surfaces (1123).

4. The sealing valve as described in claim 1, characterized in that, The sealing part (21) is provided with a guide post (41), which penetrates the sealing plate (24) and is movably sealed at the connection with the sealing plate (24).

5. The sealing valve as described in claim 1, characterized in that, The sealing part (21) is also provided with a pressure regulating component (50), which is connected to a vent pipe (42) and the vent pipe (42) is connected to the sealing part (21).

6. The sealing valve as described in claim 5, characterized in that, The pressure regulating assembly (50) includes a pressure regulating box (51), a piston (52) is provided inside the pressure regulating box (51), a screw (53) is rotatably connected to the upper side of the piston (52), a nut (54) is provided on the pressure regulating box (51), the screw (53) passes through the side wall of the pressure regulating box (51) and is threadedly connected to the nut (54), a column (55) is fixedly connected to the piston (52), a through hole is provided on the pressure regulating box (51), and the column (55) fits against the inner wall of the through hole.

7. The sealing valve as described in claim 1, characterized in that, The guide rod (25) has a slider (60) connected to its side wall. The inner wall of the arc groove (23) has a sliding groove (61). The slider (60) slides along the sliding groove (61). The trajectory of the sliding groove (61) is the same as the trajectory of the bottom wall of the arc groove (23).

Images