A valve and seal apparatus

Abstract

The utility model relates to valve technical field, especially valve and sealing equipment. The utility model provides valve, diaphragm and support portion are connected through the elastic connecting portion rotation, and are provided with the holding portion on the connecting portion, diaphragm rotates to the side of holding portion one side, diaphragm and holding portion abut, hinder diaphragm and rotate to the side of holding portion one side, and do not hinder diaphragm and rotate to the side of opposite direction of holding portion, make diaphragm and rotate to the side of holding portion one side required first opening pressure greater than diaphragm and rotate to the side of opposite direction of holding portion required second opening pressure. The design simple structure, through the holding intensity of holding portion and diaphragm is changed, and different first opening pressure can be realized, and the performance is reliable, can greatly simplify the overall structure of valve, and the installation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve and sealing device. Background Technology

[0002] In the automotive and electronic equipment industries, many parts and products have stringent requirements for both sealing and ventilation of vents, necessitating a difference in opening pressure between the inside and outside of the vent. For example, in automotive headlight condensation controllers, the external opening pressure of the vent must be greater than the internal opening pressure. When positive pressure arises inside the headlight due to temperature changes, the lower internal opening pressure allows the vent to open smoothly, promptly expelling moisture and preventing condensation. Conversely, when there is high pressure or impact from the external environment, the higher external opening pressure ensures a tight seal of the vent, preventing the intrusion of external moisture, dust, and other impurities, thus ensuring the normal operation of the headlight's internal components.

[0003] However, existing valves generally suffer from drawbacks such as complex design, numerous parts, and high assembly precision requirements in order to achieve bidirectional pressure differential control. This leads to increased manufacturing costs, cumbersome assembly processes, and reliability issues that are easily affected by complex structures. As a result, they are not well adapted to applications such as automotive lights, which have high requirements for structural compactness, cost, and reliability. Utility Model Content

[0004] To solve at least one of the above-mentioned technical problems, this utility model provides a valve and a sealing device.

[0005] The present invention provides a valve that solves the technical problem by including a support portion on the outer ring and a diaphragm in the middle. The support portion and the diaphragm are rotatably connected by an elastic connecting portion. A valve flow channel is formed in the middle of the support portion, and the valve flow channel is opened and closed by the rotation of the diaphragm. A supporting portion is provided on one side of the connecting portion, and when the diaphragm rotates toward the side with the supporting portion, the diaphragm abuts against the supporting portion.

[0006] Preferably, the abutting portion is one or more grooves formed on the connecting portion, and when the diaphragm rotates toward one side of the groove, the opposite side walls of the groove abut against each other.

[0007] Preferably, the cross-section of the groove is one of a rectangle, a triangle, or a trapezoid.

[0008] Preferably, the two opposite sidewalls of the groove are inclined inward toward the opening of the groove, and the included angle formed by the two sidewalls is in the range of 0° to 60°.

[0009] Preferably, the ratio of the depth of the groove to the thickness of the support portion is in the range of 30% to 50%.

[0010] Preferably, the spacing between the groove openings is greater than 0 and less than or equal to the spacing at the bottom of the groove; the ratio of the spacing at the bottom of the groove to the thickness of the support portion is in the range of 10% to 30%.

[0011] Preferably, each of the diaphragms is the same size, and each of the grooves is the same size.

[0012] Preferably, the support, the connecting part, and the diaphragm are integrally formed elastic monolithic structures.

[0013] Preferably, the valve has one of the following: a cross-shaped cut, a Y-shaped cut, an X-shaped cut, or a star-shaped cut, and the diaphragm is formed in the middle area enclosed by the connecting part and the cut.

[0014] To solve the above-mentioned technical problems, this utility model provides another technical solution as follows: a sealing device, including a device body and the valve mentioned above, wherein the device body has an internal cavity, and the side wall of the device body has an opening that connects the cavity to the outside, and the valve is located at the opening and closes the opening.

[0015] Compared with the prior art, the valve and sealing device provided by this utility model have the following beneficial effects:

[0016] 1. In the valve provided in this embodiment, the support and diaphragm are rotatably connected by a connecting part. Therefore, when there is a pressure difference between the media on both sides of the valve, the medium on the side with higher pressure will exert a force on the diaphragm, driving the diaphragm to rotate around the connecting part, thereby opening the valve flow channel and achieving pressure balance on both sides. The connecting part is elastic. When the pressure on both sides of the valve is balanced, the connecting part can drive the diaphragm to automatically reset and close the valve flow channel. A supporting part is provided on the connecting part. When the diaphragm rotates towards the supporting part, the diaphragm abuts against the supporting part, preventing the diaphragm from rotating towards the supporting part, but not preventing the diaphragm from rotating towards the opposite side of the supporting part. This makes the first opening pressure required when the diaphragm rotates towards the supporting part greater than the second opening pressure required when the diaphragm rotates towards the opposite side of the supporting part. This design has a simple structure. Different first opening pressures can be achieved by changing the abutment strength between the supporting part and the diaphragm. It has reliable performance, greatly simplifies the overall structure of the valve, and is easy to install.

[0017] 2. In the valve provided in this embodiment of the present invention, the supporting part is one or more grooves formed on the connecting part. When the diaphragm rotates towards the groove, the diaphragm rotates to a certain angle, causing the two opposite sidewalls of the groove to abut against each other, increasing the resistance to diaphragm rotation and thus increasing the first opening pressure for opening the valve flow channel. When the diaphragm rotates towards the opposite side of the groove, the groove and the diaphragm are subjected to pressure together, and the groove preferentially deforms or rotates. This reduces the resistance of the diaphragm folding and rotating around the connecting part, thereby reducing the second opening pressure for opening the valve flow channel, allowing the valve flow channel to be opened easily. Using grooves as the supporting part can further increase the difference in opening pressure on both sides of the valve, and the structure is simple and easy to process.

[0018] 3. In the valve provided in this embodiment of the utility model, the cross-section of the groove is one of a rectangle, a triangle, or a trapezoid. Different groove shapes have different structural rigidities, resulting in different forces required for the sidewalls to abut or deform and open. Therefore, a suitable cross-sectional shape can be selected according to different opening pressure requirements.

[0019] 4. In the valve provided in this embodiment of the utility model, the two opposite sidewalls of the groove are inclined inwards towards the opening direction of the groove. This allows the two sidewalls of the groove to abut earlier when the diaphragm rotates towards one side of the groove under force. That is, when the diaphragm rotates at a small angle, the two opposite sidewalls of the groove abut and generate resistance, ensuring that the valve flow channel will not be opened accidentally and guaranteeing the reliability of the valve seal. The included angle formed by the two sidewalls ranges from 0° to 60°. This angle design can support most pressure opening requirements and structurally avoids stress concentration, preventing cracking at the junction of the sidewalls and the bottom of the groove during long-term repeated use, and also facilitates processing.

[0020] 5. In the valve provided in this embodiment of the present invention, the ratio of the groove depth to the support thickness ranges from 30% to 50%. If the groove is too shallow, the effective height of the groove relative to the two side walls will be insufficient. When the diaphragm rotates, the two side walls will be difficult to form a preset abutment fit, and insufficient deformation space will be provided to achieve smooth opening, thereby losing the ability to regulate the bidirectional opening pressure of the valve. If the depth is too deep, the thickness of the connecting part will be too thin, resulting in a significant decrease in the connection strength between the diaphragm and the support. During long-term operation of the valve, the connection is prone to fatigue damage due to repeated stress, eventually leading to sealing failure. Designing the groove depth to be 30% to 50% of the support thickness ensures that the two side walls have sufficient height to achieve precise abutment or opening action, and also ensures that the diaphragm and the support have reliable connection strength.

[0021] 6. In the valve provided in this embodiment of the utility model, the spacing between the groove openings is greater than 0 and less than or equal to the spacing at the bottom of the groove. This can minimize the risk of the valve flow channel opening in reverse and increase the valve's application scenarios. The ratio of the spacing at the bottom of the groove to the thickness of the support portion is in the range of 10% to 30%. This width range ensures that the groove can achieve precise abutment and opening actions, avoids jamming when the diaphragm rotates, and also prevents stress concentration and breakage.

[0022] 7. In the valves provided in this embodiment, each diaphragm has the same size, and each groove has the same size. This ensures that the pressure in the valve flow channel remains consistent when each diaphragm opens and closes, allowing each diaphragm to open and close synchronously. It also simplifies processing and reduces production difficulty.

[0023] 8. The valve provided in this embodiment of the present invention has a support, connecting part, and diaphragm that are integrally formed into a single elastic piece. The valve is formed into a single piece structure by processing a single, complete elastic material, without forming splicing seams or assembly interfaces. Its overall structure is simple, highly reliable, easy to process, convenient to assemble, and occupies little space.

[0024] 9. The valve provided in this embodiment of the present invention has one of the following cuts: a cross-shaped cut, a Y-shaped cut, an X-shaped cut, or a star-shaped cut. A diaphragm is formed in the middle area enclosed by the connecting part and the cut. The cut can close naturally to seal the valve flow channel. According to specific needs, a suitable cut pattern can be adopted to obtain a corresponding number of diaphragms, achieving a balance between sealing performance, opening pressure, and durability.

[0025] 10. This utility model embodiment also provides a sealing device, which has the same beneficial effects as the valve described above, and will not be described in detail here. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional schematic diagram of the valve flow channel of the valve provided in the first embodiment of this utility model when it is not open.

[0028] Figure 2 This is a cross-sectional schematic diagram of the valve flow channel of the valve provided in the first embodiment of this utility model when it is not open.

[0029] Figure 3This is a three-dimensional schematic diagram of the valve flow channel of the valve provided in the first embodiment of this utility model opening in reverse.

[0030] Figure 4 This is a three-dimensional schematic diagram of the valve flow channel of the valve provided in the first embodiment of this utility model, showing its forward opening. Figure 1 .

[0031] Figure 5 This is a three-dimensional schematic diagram of the valve flow channel of the valve provided in the first embodiment of this utility model, showing its forward opening. Figure 2 .

[0032] Figure 6 This is a three-dimensional schematic diagram of the valve with a star-shaped cut provided in the first embodiment of this utility model.

[0033] Figure 7 yes Figure 2 Magnification of C Figure 1 .

[0034] Figure 8 This is a schematic diagram of the reverse opening process of the valve flow channel of the valve provided in the first embodiment of this utility model.

[0035] Figure 9 This is a schematic diagram of the forward opening process of the valve flow channel of the valve provided in the first embodiment of this utility model.

[0036] Figure 10 yes Figure 2 Magnification of C Figure 2 .

[0037] Figure 11 This is a schematic diagram of the frame of the sealing device provided in the second embodiment of this utility model.

[0038] Explanation of reference numerals in the attached diagram:

[0039] 1. Valves; 2. Sealing equipment;

[0040] 10. Support part; 11. Diaphragm; 12. Valve flow channel; 13. Supporting part; 14. Groove; 15. Connecting part;

[0041] 141. First sidewall; 142. Second sidewall. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0043] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0044] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0045] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0046] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0047] Please see Figures 1 to 5 The first embodiment of this utility model provides a valve 1, including an outer ring support portion 10 and a diaphragm 11 in the middle. The diaphragm 11 and the support portion 10 are rotatably connected by an elastic connecting portion 15. A valve flow channel 12 is formed in the middle of the support portion 10, and the valve flow channel 12 is opened and closed by the rotation of the diaphragm 11. A supporting portion 13 is provided on one side of the connecting portion 15. When the diaphragm 11 rotates toward the supporting portion 13, the diaphragm 11 abuts against the supporting portion 13.

[0048] Understandably, the diaphragm 11 and the support 10 are rotatably connected via an elastic connecting part 15. Therefore, when there is a pressure difference between the media on both sides of the valve 1, the medium on the side with higher pressure will exert a force on the diaphragm 11, driving the diaphragm 11 to rotate around the connecting part 15, thereby opening the valve flow passage 12 and achieving pressure balance on both sides of the valve 1. The connecting part 15 is elastic, so when the pressure on both sides of the valve 1 is balanced, the restoring force of the connecting part 15 drives the diaphragm 11 to automatically reset and close the valve flow passage 12.

[0049] Understandably, in this embodiment, the abutment portion 13 is only provided on one side of the connecting portion 15. For ease of explanation, the side of the valve 1 where the abutment portion 13 is provided is defined as side A (e.g., side A). Figure 3 and Figure 4 (As shown in the diagram, side A) The side opposite to side A, where the supporting part 13 is not provided, is side B (e.g., side A). Figure 5 (See surface B in the diagram). When the diaphragm 11 rotates towards surface A, the valve flow channel 12 opens in the reverse direction; when the diaphragm 11 rotates towards surface B, the valve flow channel 12 opens in the forward direction. The reverse opening pressure of the valve flow channel 12 is the first opening pressure. (like Figure 3 shown The positive opening pressure of valve flow channel 12 is the second opening pressure. (like Figure 4 and Figure 5 shown ).

[0050] Understandably, the supporting portion 13 is disposed on the connecting portion 15, preventing the diaphragm 11 from rotating toward the supporting portion 13, but not preventing the diaphragm 11 from rotating toward the opposite side of the supporting portion 13, so that the valve flow channel 12 opens in reverse due to the first opening pressure. The second opening pressure is greater than the positive opening pressure of valve flow channel 12. The first opening pressure can be changed by altering the bonding strength between the supporting portion 13 and the diaphragm 11. The size of the valve changes the pressure difference between the two opening positions of valve 1.

[0051] Understandably, due to the working principle of the supporting part 13, the supporting part 13 can be implemented with a simple structure without adding other parts, which can greatly simplify the overall structure of the valve 1. This makes the overall structure of the valve 1 simple, with significant advantages such as high reliability, easy processing, convenient assembly, and small space occupation.

[0052] Optionally, the valve 1 may have a diaphragm 11 and a connecting part 15 made of an elastic material, such as nitrile rubber, fluororubber, EPDM rubber, silicone rubber, etc.; while the outer ring support part 10 may be made of other materials with higher hardness, such as polypropylene, polyvinyl chloride, polyvinylidene fluoride, polyethylene, ABS plastic, polybutene, etc. In this case, the diaphragm 11 and the connecting part 15 may be made by a secondary injection molding process.

[0053] Preferably, the support 10, the connecting part 15 and the diaphragm 11 are made of a single, complete elastic material, such as silicone, which does not form splicing seams or assembly interfaces, simplifies the overall structure, further improves the overall reliability of the valve 1, and facilitates assembly.

[0054] Furthermore, a cross-shaped, Y-shaped, X-shaped, or star-shaped cut is made in the middle of valve 1, and a diaphragm 11 is formed in the middle area enclosed by the connecting part 15 and the cut. As some specific examples, Figure 1 The middle one is a valve 1 with a cross-cut design. Figure 6 The middle one is a valve 1 with a star-shaped cut.

[0055] Understandably, the diaphragm 11 is formed by cutting with slits. These slits can close naturally to seal the valve passage 12, ensuring the reliability of the valve 1's seal. Optionally, when using different types of slits, the slits can be evenly or unevenly distributed, meaning that the dimensions of each diaphragm 11 can be the same or different; the dimensions of each supporting part 13 can also be the same or different. This makes the opening method of the valve passage 12 more flexible.

[0056] In this embodiment, the number of diaphragms 11 is not limited. Depending on the specific needs, a suitable cutting pattern can be adopted to obtain the corresponding number of diaphragms 11, thereby achieving a balance between sealing performance, opening pressure, and durability.

[0057] Preferably, each diaphragm 11 is the same size, and each supporting part 13 is also the same size. That is, each diaphragm 11 has the same size, shape, thickness, etc., and the supporting part 13 has the same structure, shape, size, etc. This ensures that the pressure in the valve flow channel 12 remains consistent when each diaphragm 11 is opening and closing, and each diaphragm 11 can open and close synchronously, enhancing the stability of the valve 1, while also simplifying processing and reducing production difficulty.

[0058] Furthermore, please combine Figure 2 and Figure 7 The supporting part 13 is a groove 14 formed on the connecting part 15.

[0059] Please combine further Figure 8When the diaphragm 11 rotates toward surface A, when the diaphragm 11 rotates to a certain angle, the upper edges of the opposite first sidewall 141 and second sidewall 142 of the groove 14 will abut against each other, increasing the resistance to the rotation of the diaphragm 11 and thus increasing the first opening pressure for the valve flow channel 12 to open in the reverse direction. .

[0060] Please combine further Figure 9 When the diaphragm 11 rotates towards the opposite side of the groove 14, the groove 14 and the diaphragm 11 are both affected by pressure. The groove 14 deforms or rotates preferentially, causing the first sidewall 141 and the second sidewall 142 of the groove 14 to move away from each other. The groove 14 is in an open state, which reduces the resistance to the folding and rotation of the diaphragm 11, thereby reducing the second opening pressure for the valve flow channel 12 to open in the forward direction. .

[0061] Understandably, using the groove 14 as the supporting part 13 can not only increase the first opening pressure. It can also reduce the pressure of the second opening. This further increases the pressure difference between the two sides of valve 1, making it difficult for valve flow channel 12 to open in the reverse direction, but easy to open in the forward direction. In addition, the groove 14 has a simple structure and is easy to process.

[0062] Optionally, the groove 14 at the connection between each diaphragm 11 and the support 10 can be one or more.

[0063] Understandably, the structural stiffness of grooves 14 with different shapes varies, resulting in different forces required for the sidewalls to abut or deform and open. Therefore, a suitable cross-sectional shape can be selected according to different opening pressure requirements. In this embodiment, the specific shape of the groove 14 is not limited, as long as the groove 14 can be subjected to pressure to achieve abutment or opening of its relative sidewalls to assist or restrict the rotation of the diaphragm 11.

[0064] As specific examples, the cross-section of the groove 14 is one of a rectangle, a triangle, or a trapezoid, and the cross-section of the groove 14 can also be irregular. Preferably, the cross-section of the groove 14 is an isosceles triangle or an isosceles trapezoid, making its structure more stable and its reliability higher.

[0065] Preferably, the two opposite sides of the groove 14 are inclined inward toward the opening of the groove 14.

[0066] Understandably, this design allows the two sidewalls of the groove 14 to abut earlier when the diaphragm 11 is rotated toward the groove 14 under force. That is, when the diaphragm 11 rotates at a small angle, the two opposite sidewalls of the groove 14 abut and generate resistance, ensuring that the valve flow channel 12 will not be opened by mistake and guaranteeing the reliability of the valve 1 seal.

[0067] Please continue reading. Figure 10 In this embodiment, the angle α at which the two opposite sides of the groove 14 are inclined inward toward the opening direction of the groove 14 is (e.g., Figure 10 The value of α shown is not limited and can be determined based on the first opening pressure required for the valve flow channel 12 to open in reverse. Adjustments are typically made, generally with the first opening pressure. The greater the demand, the smaller the tilt angle α; the first opening pressure The smaller the demand, the larger the tilt angle α.

[0068] Preferably, the inward inclination angle α of the two opposite sides of the groove 14 ranges from 0° to 60°. When the angle α approaches 0°, the two opposite sides of the groove 14 are nearly parallel. This range of angle design can support the reverse opening pressure requirements of most valve flow channels 12, and structurally avoids stress concentration, preventing cracking at the junction of the sidewall and bottom of the groove 14 during long-term repeated use, and is also easy to process.

[0069] More preferably, the angle α at which the two opposite sides of the groove 14 are inclined inward ranges from 30° to 60°.

[0070] Understandably, in this embodiment, the depth, width, and other dimensions of the groove 14 are not specifically limited, and can be determined according to the first opening pressure required to open the valve flow channel 12. Second opening pressure Adjustments were made.

[0071] Generally, the depth and width of the groove 14 are inversely proportional to the pressure required to open the valve passage 12. That is, the deeper the groove 14, the lower the pressure required to open the valve passage 12; the wider the groove 14, the lower the pressure required to open the valve passage 12.

[0072] Understandably, in this embodiment, factors such as the overall hardness and thickness of valve 1 and the size of diaphragm 11 should also be considered to select the depth and width of the groove 14. If a fixed valve 1 opening pressure is required, the higher the hardness of valve 1, the greater the depth and width of the groove 14; the greater the thickness of valve 1, the greater the depth and width of the groove 14; and the larger the size of diaphragm 11, the smaller the depth and width of the groove 14.

[0073] Furthermore, it should be understood that if the groove 14 is too shallow, the effective height of the groove 14 relative to the two side walls will be insufficient. When the diaphragm 11 rotates, the two side walls will be unable to form a pre-set abutment fit, and insufficient deformation space will be provided to achieve smooth opening, thus losing the ability to regulate the bidirectional opening pressure of the valve 1. If the groove 14 is too deep, the connection between the diaphragm 11 and the support 10 will be too thin, resulting in a significant decrease in the connection strength. During long-term operation of the valve 1, the connection is prone to fatigue damage due to repeated stress, eventually leading to sealing failure. Therefore, in this embodiment, the depth of the groove 14 should achieve a balance between the functional realization and structural strength of the groove 14.

[0074] Preferably, please continue reading. Figure 10 The depth h of groove 14 (e.g.) Figure 10 The thickness d of the support portion 10 (as shown in the figure) is equal to the thickness h of the support portion 10. Figure 10 The ratio of d) shown is in the range of 30% to 50%. This depth range ensures that the opposite side walls of the groove 14 have sufficient height to achieve precise abutment or opening action, and also ensures that the diaphragm 11 and the support 10 have reliable connection strength.

[0075] Furthermore, the width of the groove 14 can be divided into the spacing of the openings of the groove 14. (like Figure 10 As shown The distance between the bottom of groove 14 and the bottom of groove 14 (like Figure 10 As shown The spacing of the openings in groove 14. The valve can be opened in reverse according to the first opening pressure required for the valve flow channel 12 to open. Adjustments were made.

[0076] Optionally, the spacing of the openings in the groove 14 The spacing less than or equal to the bottom of groove 14 This design allows the diaphragm 11 to rotate slightly towards the groove 14 under pressure, causing the upper edges of the opposite side walls of the groove 14 to abut and generate resistance, thus ensuring the reliability of the valve 1's seal and increasing the application scenarios of the valve 1.

[0077] Preferably, the spacing of the openings of the groove 14 Approaching 0, this minimizes the risk of valve flow channel 12 opening in reverse.

[0078] Optionally, in this embodiment, the thickness of the support portion 10 and the diaphragm 11 are the same, and the spacing at the bottom of the groove 14 is... The ratio of the thickness d of the support portion 10 to the thickness d of the support portion 10 ranges from 10% to 30%. The spacing at the bottom of the groove 14... If the groove is set too narrow, it will cause stress concentration. When the groove 14 abuts against or opens relative to its side walls, the connection between its side walls and the bottom surface is repeatedly stressed, making it prone to breakage. When the valve flow channel 12 opens in the forward direction, that is, when the diaphragm 11 rotates towards the opposite side of the groove 14, if the spacing at the bottom of the groove 14... If the groove 14 is set too narrow, the effect of reducing the resistance of the diaphragm 11 folding and rotating will be insignificant. However, if the spacing at the bottom of the groove 14 is too narrow... If the spacing is too wide, it will weaken the connection between the diaphragm 11 and the support 10, affecting the sealing performance of the valve 1 passage. The spacing at the bottom of the groove 14... The thickness of the support portion 10 is set to 10% to 30%, which ensures that the groove 14 can achieve precise contact and opening action, avoids jamming when the diaphragm 11 rotates, and also prevents stress concentration and avoids breakage.

[0079] Preferably, when the supporting part 13 is configured as a groove 14, the dimensions of each diaphragm 11 are the same, and the dimensions of each groove 14 are the same. That is, the number, size, shape, and depth of the grooves 14 are all the same, which facilitates processing and production, and ensures that the pressure of each diaphragm 11 when opening and closing the valve flow channel 12 remains consistent.

[0080] Please see Figure 11 The second embodiment of this utility model provides a sealing device 2, including a device body and the valve 1 mentioned above. The device body has an internal cavity, and the side wall of the device body has an opening that connects the cavity to the outside. The valve 1 is located at the opening and closes the opening.

[0081] Understandably, in this embodiment, the main body of the device can be any device that requires bidirectional different opening pressures, such as a condensation controller, an explosion-proof valve, a vent valve, etc.

[0082] Understandably, the sealing device 2 in this embodiment also has all the beneficial effects of the valve 1 described above, which will not be repeated here.

[0083] Compared with the prior art, the valve and sealing device provided by this utility model have the following beneficial effects:

[0084] 1. In the valve provided in this embodiment, the support and diaphragm are rotatably connected by a connecting part. Therefore, when there is a pressure difference between the media on both sides of the valve, the medium on the side with higher pressure will exert a force on the diaphragm, driving the diaphragm to rotate around the connecting part, thereby opening the valve flow channel and achieving pressure balance on both sides. The connecting part is elastic. When the pressure on both sides of the valve is balanced, the connecting part can drive the diaphragm to automatically reset and close the valve flow channel. A supporting part is provided on the connecting part. When the diaphragm rotates towards the supporting part, the diaphragm abuts against the supporting part, preventing the diaphragm from rotating towards the supporting part, but not preventing the diaphragm from rotating towards the opposite side of the supporting part. This makes the first opening pressure required when the diaphragm rotates towards the supporting part greater than the second opening pressure required when the diaphragm rotates towards the opposite side of the supporting part. This design has a simple structure. Different first opening pressures can be achieved by changing the abutment strength between the supporting part and the diaphragm. It has reliable performance, greatly simplifies the overall structure of the valve, and is easy to install.

[0085] 2. In the valve provided in this embodiment of the present invention, the supporting part is one or more grooves formed on the connecting part. When the diaphragm rotates towards the groove, the diaphragm rotates to a certain angle, causing the two opposite sidewalls of the groove to abut against each other, increasing the resistance to diaphragm rotation and thus increasing the first opening pressure for opening the valve flow channel. When the diaphragm rotates towards the opposite side of the groove, the groove and the diaphragm are subjected to pressure together, and the groove preferentially deforms or rotates. This reduces the resistance of the diaphragm folding and rotating around the connecting part, thereby reducing the second opening pressure for opening the valve flow channel, allowing the valve flow channel to be opened easily. Using grooves as the supporting part can further increase the difference in opening pressure on both sides of the valve, and the structure is simple and easy to process.

[0086] 3. In the valve provided in this embodiment of the utility model, the cross-section of the groove is one of a rectangle, a triangle, or a trapezoid. Different groove shapes have different structural rigidities, resulting in different forces required for the sidewalls to abut or deform and open. Therefore, a suitable cross-sectional shape can be selected according to different opening pressure requirements.

[0087] 4. In the valve provided in this embodiment of the utility model, the two opposite sidewalls of the groove are inclined inwards towards the opening direction of the groove. This allows the two sidewalls of the groove to abut earlier when the diaphragm rotates towards one side of the groove under force. That is, when the diaphragm rotates at a small angle, the two opposite sidewalls of the groove abut and generate resistance, ensuring that the valve flow channel will not be opened accidentally and guaranteeing the reliability of the valve seal. The included angle formed by the two sidewalls ranges from 0° to 60°. This angle design can support most pressure opening requirements and structurally avoids stress concentration, preventing cracking at the junction of the sidewalls and the bottom of the groove during long-term repeated use, and also facilitates processing.

[0088] 5. In the valve provided in this embodiment of the present invention, the ratio of the groove depth to the support thickness ranges from 30% to 50%. If the groove is too shallow, the effective height of the groove relative to the two side walls will be insufficient. When the diaphragm rotates, the two side walls will be difficult to form a preset abutment fit, and insufficient deformation space will be provided to achieve smooth opening, thereby losing the ability to regulate the bidirectional opening pressure of the valve. If the depth is too deep, the thickness of the connecting part will be too thin, resulting in a significant decrease in the connection strength between the diaphragm and the support. During long-term operation of the valve, the connection is prone to fatigue damage due to repeated stress, eventually leading to sealing failure. Designing the groove depth to be 30% to 50% of the support thickness ensures that the two side walls have sufficient height to achieve precise abutment or opening action, and also ensures that the diaphragm and the support have reliable connection strength.

[0089] 6. In the valve provided in this embodiment of the utility model, the spacing between the groove openings is greater than 0 and less than or equal to the spacing at the bottom of the groove. This can minimize the risk of the valve flow channel opening in reverse and increase the valve's application scenarios. The ratio of the spacing at the bottom of the groove to the thickness of the support portion is in the range of 10% to 30%. This width range ensures that the groove can achieve precise abutment and opening actions, avoids jamming when the diaphragm rotates, and also prevents stress concentration and breakage.

[0090] 7. In the valves provided in this embodiment, each diaphragm has the same size, and each groove has the same size. This ensures that the pressure in the valve flow channel remains consistent when each diaphragm opens and closes, allowing each diaphragm to open and close synchronously. It also simplifies processing and reduces production difficulty.

[0091] 8. The valve provided in this embodiment of the present invention has a support, connecting part, and diaphragm that are integrally formed into a single elastic piece. The valve is formed into a single piece structure by processing a single, complete elastic material, without forming splicing seams or assembly interfaces. Its overall structure is simple, highly reliable, easy to process, convenient to assemble, and occupies little space.

[0092] 9. The valve provided in this embodiment of the present invention has one of the following cuts: a cross-shaped cut, a Y-shaped cut, an X-shaped cut, or a star-shaped cut. A diaphragm is formed in the middle area enclosed by the connecting part and the cut. The cut can close naturally to seal the valve flow channel. According to specific needs, a suitable cut pattern can be adopted to obtain a corresponding number of diaphragms, achieving a balance between sealing performance, opening pressure, and durability.

[0093] 10. This utility model embodiment also provides a sealing device, which has the same beneficial effects as the valve described above, and will not be described in detail here.

[0094] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve, characterized in that: It includes a support portion located on the outer ring and a diaphragm located in the middle. The support portion and the diaphragm are rotatably connected by an elastic connecting portion. A valve flow channel is formed in the middle of the support portion, and the valve flow channel is opened and closed by the rotation of the diaphragm. A supporting portion is provided on one side of the connecting portion. When the diaphragm rotates toward the side with the supporting portion, the diaphragm abuts against the supporting portion.

2. The valve as described in claim 1, characterized in that: The abutting portion is one or more grooves formed on the connecting portion. When the diaphragm rotates toward one side of the groove, the opposite side walls of the groove abut against each other.

3. The valve as described in claim 2, characterized in that: The cross-section of the groove is one of rectangle, triangle, or trapezoid.

4. The valve as described in claim 2, characterized in that: The two opposite sidewalls of the groove are inclined inward toward the opening of the groove, and the included angle formed by the two sidewalls is in the range of 0° to 60°.

5. The valve as described in claim 2, characterized in that: The ratio of the depth of the groove to the thickness of the support portion is in the range of 30% to 50%.

6. The valve as described in claim 2, characterized in that: The spacing between the openings of the groove is greater than 0 and less than or equal to the spacing at the bottom of the groove; the ratio of the spacing at the bottom of the groove to the thickness of the support portion is in the range of 10% to 30%.

7. The valve as described in claim 2, characterized in that: Each of the diaphragms is the same size, and each of the grooves is the same size.

8. The valve as described in claim 1, characterized in that: The support, the connecting part, and the diaphragm are integrally formed elastic monolithic structures.

9. The valve as claimed in claim 1, characterized in that: The valve has one of the following cuts: a cross-shaped cut, a Y-shaped cut, an X-shaped cut, or a star-shaped cut. The diaphragm is formed in the middle area enclosed by the connecting part and the cut.

10. A sealing device, characterized in that: The device includes a main body and a valve as described in any one of claims 1-9. The main body has an internal cavity, and the side wall of the main body has an opening that connects the cavity to the outside. The valve is located at the opening and closes the opening.

Images