Iris valve with high sealing performance

Abstract

The utility model relates to the technical field of iris valves, and discloses a high-sealing iris valve which comprises a mounting seat, a supporting plate is fixedly mounted on the side face of the mounting seat, and a valve body is fixedly mounted at the end of the supporting plate. Due to the design of the valve plates, the main sealing strip, the secondary sealing strip, the main sealing groove and the secondary sealing groove, opening and closing operation is achieved through mutual matched rotation of the six valve plates, and meanwhile the main sealing strip and the secondary sealing strip between every two adjacent valve plates are in an embedded state with the main sealing groove and the secondary sealing groove all the time. The main sealing strip and the secondary sealing strip are matched with the main sealing groove and the secondary sealing groove, the main sealing strip and the secondary sealing strip move along with the valve plates in the moving process and are embedded along with the valve plates in the closing process, and therefore two layers of crossed areas are formed between the contact faces of every two adjacent valve plates, and poor sealing performance caused by excessive abrasion of the smooth faces is prevented. According to the technical scheme, the sealing performance of the contact faces between the valve plates is improved, and the technical problem that the sealing performance is poor is solved.

Description

Technical Field

[0001] This utility model relates to the field of iris valve technology, and more specifically, to an iris valve with high sealing performance. Background Technology

[0002] As a valve device with significant application value in the field of industrial fluid control, the iris valve has a relatively intricate and crucial structure, mainly composed of the valve body, valve disc (often figuratively referred to as the iris in the industry), actuation device, and sealing components. Among these components, the valve disc is undoubtedly the core component of the iris valve. Its unique shape design resembles the colorful iris of the human eye, which has the function of adjusting light. The valve disc has flexible and diverse movement modes, capable of both rotational movement around a central axis and translational movement. These two movement modes are used to open or close the valve, thereby precisely controlling the flow of fluid.

[0003] In current technological applications, the internal control on / off structure of existing iris valves mainly relies on valve discs. Specifically, this valve disc structure is composed of multiple independent valve discs. When the valve closes to block fluid flow, these multiple valve discs move closer to each other along a specific trajectory and eventually merge into a tight whole, thereby achieving the purpose of blocking fluid flow. In the initial stage when the valve is first put into use and the contact surfaces between the valve discs are smooth and flat, this structural design does exhibit good sealing performance, effectively preventing fluid leakage and ensuring the reliability of the valve's seal when closed.

[0004] However, with the long-term operation of iris valves in industrial production, problems have gradually emerged. Because the valves need to be frequently opened and closed during operation, the valve discs constantly rub against each other, while also enduring continuous scouring and abrasion from the fluid. Under these harsh working conditions, after a period of use, the originally smooth and flat valve disc contact surfaces inevitably suffer severe wear. The worn contact surfaces become uneven, and when the valve discs, which were originally tightly fitted, are closed, gaps appear because the contact surfaces are no longer flat. These gaps create channels for fluid leakage, directly leading to a significant decrease in the valve's sealing performance, failing to meet the stringent sealing requirements of industrial production. Therefore, to ensure that iris valves can stably and effectively seal in practical applications over the long term, it is urgent to deeply improve and optimize the existing valve disc structure to fundamentally improve its sealing performance and meet the ever-evolving needs of industrial production. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides an iris valve with high sealing performance, which solves the technical problem of poor sealing performance in existing technologies.

[0006] According to one aspect, at least one embodiment of the present invention provides an iris valve with high sealing performance, including a mounting base, a support plate fixedly mounted on the side of the mounting base, a valve body fixedly mounted on the end of the support plate, an inner plate fixedly mounted inside the valve body, a valve plate movably mounted on the front of the inner plate, a limiting groove being formed on the front of the inner plate, a limiting block being fixedly mounted on one side of the back of the valve plate and sliding inside the limiting groove, a front panel being rotatably mounted on the front of the valve body, a limiting groove being formed on the surface of the front panel, a limiting block being fixedly mounted on the front of the valve plate and inside the limiting groove, a main sealing groove and a secondary sealing groove being formed on one side of the valve plate, two secondary sealing grooves being symmetrically distributed on both sides of the main sealing groove; a main sealing strip and a secondary sealing strip being fixedly mounted on the other side of the valve plate, two secondary sealing strips being symmetrically distributed on both sides of the main sealing strip; and a driving mechanism being fixedly mounted on the side of the mounting base near the front panel.

[0007] According to another aspect, at least one embodiment of the present invention also provides an iris valve with high sealing performance, including a rear housing rotatably mounted on the back of the valve body, an inner plate two fixedly mounted on the back of the inner plate one, a movable block slidably mounted on the back of the inner plate two, a back panel fixedly mounted on the back of the rear housing, a limit groove three formed on the surface of the back panel, a limit block three located inside the limit groove three fixedly mounted on the back of the movable block, a limit mechanism provided in the inner plate two, and a drive mechanism two fixedly mounted on the side of the mounting base near the back panel.

[0008] According to another aspect, at least one embodiment of the present invention also provides an iris valve with high sealing performance, including a drive mechanism including a first cylinder hinged to one side of the mounting base, a first connecting member fixedly mounted on the telescopic end of the first cylinder, a fixing plate hinged to the first connecting member, and an end of the fixing plate fixedly connected to the front panel.

[0009] According to another aspect, at least one embodiment of the present invention also provides an iris valve with high sealing performance, including a limiting mechanism comprising a limiting groove four opened on the back of the inner plate two, wherein a limiting block four fixedly connected to the movable block is slidably installed inside the limiting groove four.

[0010] According to another aspect, at least one embodiment of the present invention also provides an iris valve with high sealing performance, including the second drive mechanism including a second cylinder hinged to one side of the mounting base, the telescopic end of the second cylinder being fixedly mounted with a second connecting member, the second connecting member being hinged to a second fixing plate, and the end of the second fixing plate being fixedly connected to the rear housing.

[0011] According to another aspect, at least one embodiment of the present invention also provides an iris valve with high sealing performance, including three movable blocks, the three movable blocks being slidable relative to the inner plate.

[0012] According to another aspect, at least one embodiment of the present invention also provides an iris valve with high sealing performance, comprising a secondary sealing strip and a main sealing strip combined together to form a three-layer sealing layer, wherein the secondary sealing strip forms the first and third layers, and the main sealing strip forms the second layer.

[0013] According to another aspect, at least one embodiment of the present invention also provides an iris valve with high sealing performance, including a main sealing strip and a secondary sealing strip with different widths, wherein the width of the secondary sealing strip is greater than the width of the main sealing strip, forming two intersecting areas.

[0014] According to another aspect, at least one embodiment of the present invention also provides an iris valve with high sealing performance, including a total of six valve plates, which together form a whole, and the valve body can be opened and closed through the cooperation between the six valve plates.

[0015] The beneficial effects of the embodiments of this utility model are as follows:

[0016] 1. This utility model, through the design of valve plates, main sealing strips, secondary sealing strips, main sealing grooves, and secondary sealing grooves, achieves opening and closing operations through the mutual cooperation and rotation of six valve plates. At the same time, the main sealing strips and secondary sealing strips between adjacent valve plates are always in an embedded state with the main sealing grooves and secondary sealing grooves, moving together with the valve plates during operation and engaging with them during closing. This forms two intersecting areas between the contact surfaces of adjacent valve plates, preventing poor sealing due to excessive wear of smooth surfaces. The cooperation between the main sealing strips and secondary sealing strips and the main sealing grooves and secondary sealing grooves improves the sealing performance of the contact surfaces between the valve plates.

[0017] 2. This utility model, through the coordinated action of the movable block, limiting groove three, limiting block three, limiting groove four, and limiting block four, enables the back panel to rotate during operation. When limiting block three moves from one end of limiting groove three to the other end, the movable block will move up and down under the combined limiting action of limiting groove three and limiting groove four. When the three movable blocks are close to each other, the material flow rate is reduced; when the three movable blocks are far apart, the material flow rate is increased. Thus, by controlling the rotation angle of the rear shell, the movement position of the movable block is controlled, thereby controlling the amount of material flow. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0019] Figure 1 This is a front view of one embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the rear structure in another embodiment of the present invention;

[0021] Figure 3 This is a side-section view of another embodiment of the present invention;

[0022] Figure 4 for Figure 3 A partially enlarged structural diagram at point A in the embodiment;

[0023] Figure 5 This is a schematic diagram of the overall exploded structure in another embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the valve plate in another embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the main sealing groove in another embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the main sealing strip in another embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the limiting groove in another embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the secondary sealing strip in another embodiment of the present invention.

[0029] In the diagram: 1. Mounting base; 2. Support plate; 3. Valve body; 4. Inner plate 1; 5. Valve plate; 6. Limiting groove 1; 7. Limiting block 1; 8. Front panel; 9. Limiting groove 2; 10. Limiting block 2; 11. Main sealing groove; 12. Secondary sealing groove; 13. Main sealing strip; 14. Secondary sealing strip; 15. First cylinder; 16. First connecting piece; 17. Fixing plate 1; 18. Rear housing; 19. Movable block; 20. Back panel; 21. Limiting groove 3; 22. Limiting block 3; 23. Limiting groove 4; 24. Limiting block 4; 25. Second cylinder; 26. Second connecting piece; 27. Fixing plate 2; 28. Inner plate 2. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0031] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0032] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] like Figures 1-10 As shown, this invention illustrates a highly sealing iris valve according to one embodiment, comprising a mounting base 1, a support plate 2 fixedly mounted on the side of the mounting base 1, a valve body 3 fixedly mounted on the end of the support plate 2, an inner plate 4 fixedly mounted inside the valve body 3, a valve plate 5 movably mounted on the front of the inner plate 4, a limit groove 6 formed on the front of the inner plate 4, a limit block 7 fixedly mounted on one side of the back of the valve plate 5, which slides inside the limit groove 6, and a front panel 8 rotatably mounted on the front of the valve body 3. A limiting groove 9 is provided on the front of the valve plate 5. A limiting block 10 located inside the limiting groove 9 is fixedly installed on the front of the valve plate 5. A main sealing groove 11 and a secondary sealing groove 12 are provided on one side of the valve plate 5. There are two secondary sealing grooves 12, which are symmetrically distributed on both sides of the main sealing groove 11. A main sealing strip 13 and a secondary sealing strip 14 are fixedly installed on the other side of the valve plate 5. There are two secondary sealing strips 14, which are symmetrically distributed on both sides of the main sealing strip 13. A drive mechanism is fixedly installed on the side of the mounting base 1 near the front panel 8.

[0037] When using the device, the operator installs the mounting base 1 in the desired position and then starts the first cylinder 15. The operation of the first cylinder 15 pushes the first connecting piece 16 forward, thereby causing the fixing plate 17 to rotate around the center of the front panel 8. At this time, due to the cooperation between the limiting groove 16, the limiting block 17, the limiting groove 29, and the limiting block 20, the limiting block 20 moves relative to the inside of the limiting groove 29, moving from one end of the limiting groove 29 to the other end. This movement, through the limiting block 20, drives the device to rotate. The valve plates 5 move together, and under the limiting action of the limiting groove 6, the six valve plates 5 eventually move in the same direction, causing the middle of the valve body 3 to open, thus achieving the valve opening effect. Then the first cylinder 15 runs, causing the six valve plates 5 to rotate in opposite directions. During the rotation, the secondary sealing strip 14 always slides inside the secondary sealing groove 12, and the main sealing strip 13 always slides inside the main sealing groove 11. Thus, after the complete closure operation is achieved, the main sealing strip 13 and the secondary sealing strip 14 are perfectly fitted with the main sealing groove 11 and the secondary sealing groove 12, resulting in higher sealing performance.

[0038] Due to the design of the valve plate 5, main sealing strip 13, secondary sealing strip 14, main sealing groove 11, and secondary sealing groove 12, the opening and closing operation is achieved through the mutual cooperation and rotation of the six valve plates 5. At the same time, the main sealing strip 13 and secondary sealing strip 14 between two adjacent valve plates 5 are always in an engaged state with the main sealing groove 11 and secondary sealing groove 12. They move together with the valve plates 5 during the movement and engage with them when closing, thus forming two layers of cross areas between the contact surfaces of two adjacent valve plates 5. This prevents poor sealing due to excessive wear of the smooth surface. The cooperation between the main sealing strip 13 and secondary sealing strip 14 and the main sealing groove 11 and secondary sealing groove 12 improves the sealing performance of the contact surfaces between the valve plates 5.

[0039] In some examples, a rear housing 18 is rotatably mounted on the back of the valve body 3, an inner plate 28 is fixedly mounted on the back of the inner plate 1 4, a movable block 19 is slidably mounted on the back of the inner plate 28, a back panel 20 is fixedly mounted on the back of the rear housing 18, a limit groove 3 21 is formed on the surface of the back panel 20, a limit block 3 22 located inside the limit groove 3 21 is fixedly mounted on the back of the movable block 19, a limit mechanism is provided in the inner plate 28, and a drive mechanism 2 is fixedly mounted on the side of the mounting base 1 near the back panel 20.

[0040] When the staff wants to adjust the discharge flow rate, they start the second cylinder 25. The operation of the second cylinder 25 will drive the second connecting piece 26 to move, which in turn drives the fixed plate 27 to rotate the rear housing 18 with the center of the housing 18 as the rotation point. Then, due to the cooperation between the limiting groove 3 21 and the limiting block 3 22, and the joint operation of the limiting groove 4 23 and the limiting block 4 24, the movable block 19 moves synchronously with the rotation of the back panel 20. When the three movable blocks 19 are close to each other, the material flow rate is reduced; when the three movable blocks 19 are far apart, the material flow rate is increased.

[0041] Through the coordinated action of movable block 19, limiting groove 21, limiting block 22, limiting groove 23, and limiting block 24, when the back panel 20 rotates, when limiting block 22 moves from one end of limiting groove 21 to the other, movable block 19 will move up and down under the combined limiting action of limiting groove 21 and limiting groove 23. When the three movable blocks 19 are close to each other, the material flow rate is reduced; when the three movable blocks 19 are far apart, the material flow rate is increased. Thus, by controlling the rotation angle of the rear shell 18, the movement position of movable block 19 is controlled, thereby controlling the amount of material flow.

[0042] In some examples, the drive mechanism includes a first cylinder 15 hinged to one side of the mounting base 1, a first connector 16 fixedly mounted at the telescopic end of the first cylinder 15, a fixing plate 17 hinged to the first connector 16, and the end of the fixing plate 17 fixedly connected to the front panel 8.

[0043] When the first cylinder 15 is started, the operation of the first cylinder 15 will push the first connecting piece 16 forward, thereby causing the fixed plate 17 to rotate around the center of the front panel 8.

[0044] In some examples, the limiting mechanism includes a limiting groove 23 on the back of the inner plate 28, and a limiting block 24 fixedly connected to the movable block 19 is slidably installed inside the limiting groove 23.

[0045] Due to the design of the limiting groove 4 23 and the limiting block 4 24, the movable block 19 can be limited, so that the movable block 19 can only move along the direction of the limiting groove 4 23, thereby achieving the effect of controlling the material flow and ensuring the movement stability of the movable block 19.

[0046] In some examples, the second drive mechanism includes a second cylinder 25 hinged to one side of the mounting base 1. The telescopic end of the second cylinder 25 is fixedly mounted with a second connector 26. The second connector 26 is hinged to a second fixing plate 27. The end of the second fixing plate 27 is fixedly connected to the rear housing 18.

[0047] When the second cylinder 25 is started, the operation of the second cylinder 25 will drive the second connecting piece 26 to move, which in turn will drive the fixed plate 27 to rotate with the center of the rear housing 18 as the rotation point.

[0048] In some examples, there are three movable blocks 19, which can slide relative to the inner plate 28.

[0049] By designing three active blocks 19, the material flow rate is reduced when the three active blocks 19 are close to each other, and the material flow rate is increased when the three active blocks 19 are far apart, thereby achieving the effect of controlling the material flow rate.

[0050] In some examples, the secondary sealing strip 14 and the main sealing strip 13 are combined to form a three-layer sealing layer, with the secondary sealing strip 14 forming the first and third layers, and the main sealing strip 13 forming the second layer. This three-layer sealing design results in better sealing performance for the iris valve.

[0051] In some examples, the main sealing strip 13 and the secondary sealing strip 14 have different widths, with the secondary sealing strip 14 being wider than the main sealing strip 13, forming two intersecting areas. This design difference in width between the main sealing strip 13 and the secondary sealing strip 14 creates two intersecting areas, which cut off any existing gaps, thereby improving the sealing performance of the iris valve.

[0052] In some examples, there are a total of six valve plates 5. The six valve plates 5 together form a whole, and the valve body 3 is opened and closed by the cooperation between the six valve plates 5.

[0053] In some examples, the included angle between the six valve plates 5 is sixty degrees, and the six valve plates 5 together form a complete unit.

[0054] Working principle and usage process of this utility model:

[0055] When operating the equipment, the operator first installs the mounting base 1 in the required position, and then starts the first cylinder 15. After the first cylinder 15 starts, it pushes the first connecting piece 16 forward, which in turn drives the fixing plate 17 to rotate around the center of the front panel 8. During this process, the limiting groove 1 6 and the limiting block 1 7, and the limiting groove 2 9 and the limiting block 2 10 cooperate with each other. The limiting block 2 10 moves relative to the limiting groove 2 9, sliding from one end to the other, thereby driving the valve plate 5 to move together. At the same time, under the limiting action of the limiting groove 1 6, the six valve plates 5 will move in the same direction, causing the middle of the valve body 3 to open, thus achieving the valve opening effect.

[0056] When the valve needs to be closed, the first cylinder 15 operates again, driving the six valve plates 5 to rotate in the opposite direction. During rotation, the secondary sealing strip 14 always slides within the secondary sealing groove 12, and the main sealing strip 13 always slides within the main sealing groove 11. After the valve is fully closed, the main sealing strip 13 and the secondary sealing strip 14 perfectly fit with the main sealing groove 11 and the secondary sealing groove 12, ensuring a higher level of sealing.

[0057] If the operator needs to adjust the discharge flow rate, the second cylinder 25 can be activated. After the second cylinder 25 is activated, it will drive the second connecting piece 26 to move, which in turn drives the fixed plate 27 to rotate around the center of the rear housing 18. With the cooperation of the limiting groove 3 21 and the limiting block 3 22, and the limiting groove 4 23 and the limiting block 4 24, the movable block 19 will move synchronously with the rotation of the back panel 20. When the three movable blocks 19 are close to each other, the material flow rate will decrease; when the three movable blocks 19 are far apart, the material flow rate will increase.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-sealing iris valve, comprising a mounting base (1), characterized in that: A support plate (2) is fixedly installed on the side of the mounting base (1), and a valve body (3) is fixedly installed at the end of the support plate (2). An inner plate (4) is fixedly installed inside the valve body (3). A valve plate (5) is movably installed on the front of the inner plate (4). A limit groove (6) is opened on the front of the inner plate (4). A limit block (7) that slides inside the limit groove (6) is fixedly installed on one side of the back of the valve plate (5). A front panel (8) is rotatably installed on the front of the valve body (3). A limit groove (9) is opened on the surface of the front panel (8). The valve plate (5) 5) A limiting block 2 (10) is fixedly installed on the front side of the limiting groove 2 (9). A main sealing groove (11) and a secondary sealing groove (12) are opened on one side of the valve plate (5). There are two secondary sealing grooves (12), which are symmetrically distributed on both sides of the main sealing groove (11). A main sealing strip (13) and a secondary sealing strip (14) are fixedly installed on the other side of the valve plate (5). There are two secondary sealing strips (14), which are symmetrically distributed on both sides of the main sealing strip (13). A drive mechanism 1 is fixedly installed on the side of the mounting base (1) near the front panel (8).

2. The iris valve with high sealing performance according to claim 1, characterized in that: The valve body (3) is rotatably mounted with a rear housing (18), the inner plate (4) is fixedly mounted with an inner plate (28), the inner plate (28) is slidably mounted with a movable block (19) on the back of the inner plate (28), the rear housing (18) is fixedly mounted with a back panel (20), the surface of the back panel (20) is provided with a limiting groove (21), the back of the movable block (19) is fixedly mounted with a limiting block (22) located inside the limiting groove (21), the inner plate (28) is provided with a limiting mechanism, and the mounting base (1) is fixedly mounted with a driving mechanism (2) on the side near the back panel (20).

3. The iris valve with high sealing performance according to claim 1, characterized in that: The drive mechanism includes a first cylinder (15) hinged to one side of the mounting base (1), a first connector (16) is fixedly installed at the telescopic end of the first cylinder (15), a fixing plate (17) is hinged to the first connector (16), and the end of the fixing plate (17) is fixedly connected to the front panel (8).

4. The iris valve with high sealing performance according to claim 2, characterized in that: The limiting mechanism includes a limiting groove four (23) opened on the back of the inner plate two (28), and a limiting block four (24) fixedly connected to the movable block (19) is slidably installed inside the limiting groove four (23).

5. The iris valve with high sealing performance according to claim 2, characterized in that: The second drive mechanism includes a second cylinder (25) hinged to one side of the mounting base (1). The telescopic end of the second cylinder (25) is fixedly mounted with a second connector (26). The second connector (26) is hinged to a second fixing plate (27). The end of the second fixing plate (27) is fixedly connected to the rear housing (18).

6. The iris valve with high sealing performance according to claim 2, characterized in that: The number of the three movable blocks (19) is three, and the three movable blocks (19) can slide relative to the inner plate two (28).

7. The iris valve with high sealing performance according to claim 1, characterized in that: The secondary sealing strip (14) and the main sealing strip (13) are combined to form a three-layer sealing layer. The secondary sealing strip (14) forms the first and third layers, and the main sealing strip (13) forms the second layer.

8. The iris valve with high sealing performance according to claim 1, characterized in that: The main sealing strip (13) and the secondary sealing strip (14) have different widths, with the secondary sealing strip (14) being wider than the main sealing strip (13), forming two intersecting areas.

9. An iris valve with high sealing performance according to claim 1, characterized in that: There are six valve plates (5) in total. The six valve plates (5) together form a whole. Through the cooperation between the six valve plates (5), the valve body (3) can be switched on and off.

10. An iris valve with high sealing performance according to claim 1, characterized in that: The included angle between the six valve plates (5) is sixty degrees, and the six valve plates (5) together form a complete whole.

Images