One-way valve

Abstract

The utility model discloses a one-way valve, which comprises a valve seat, a valve core, a valve core and a valve core, the sealing structure is convexly arranged on the inner wall of the valve seat; the valve plate comprises a plurality of first circular arcs which are concentric; the second circular arcs protrude out of the first circular arcs respectively, the first circular arcs are arranged between every two adjacent second circular arcs in the circumferential direction, and the number of the second circular arcs is equal to that of the first circular arcs and is an odd number; when the one-way valve is in a positive pressure state, the valve plate does not make contact with the sealing structure, and the vent holes communicate with the outside. And when the one-way valve is in a negative pressure state, the valve plate is in contact with the sealing structure and covers the plurality of vent holes. The valve plate not only can meet the gas flowing requirement of the one-way valve in a positive pressure state, but also can meet the sealing requirement of the one-way valve in a negative pressure state, meanwhile, the production cost is effectively reduced, and the economical efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of one-way valves, and in particular to a one-way valve. Background Technology

[0002] Existing check valves typically use valve discs composed of two parts: a plastic component and a rubber component. The plastic component includes a guide structure and a disc, with the disc supporting the rubber component. The guide structure is adapted to the guide hole of the check valve, guiding the valve disc during its movement and ensuring accurate descent.

[0003] When the check valve is under positive pressure, the valve plate will be suspended due to the force exerted by the external airflow, so that the multiple vents of the check valve can be connected to the external airflow.

[0004] When the check valve is under negative pressure, the guide structure of the plastic part will fall into the guide hole of the check valve under the attraction of the negative pressure. At the same time, the rubber part will come into contact with the sealing structure of the check valve and cover the multiple vent holes of the check valve, thereby preventing the reverse flow of air and ensuring that the check valve achieves a good sealing effect under negative pressure.

[0005] However, because this valve plate requires both plastic and rubber components, these two different materials must be manufactured as a single unit. This process involves multiple steps; for example, at the junction of the plastic and rubber components, bonding or injection molding processes are needed to ensure the connection strength and sealing performance. These complex processes lead to extended production cycles and increased consumption of human and material resources, resulting in higher production costs and lower economic efficiency for existing valve plates. Utility Model Content

[0006] The purpose of this invention is to solve the technical problems of high production cost and poor economic efficiency of traditional valve plates. This invention provides a one-way valve in which the valve plate can not only meet the gas flow requirements of the one-way valve under positive pressure, but also meet the sealing requirements of the one-way valve under negative pressure, while effectively reducing production costs and improving economic efficiency.

[0007] To solve the above-mentioned technical problems, an embodiment of this utility model discloses a one-way valve, the one-way valve comprising:

[0008] Valve seat, the valve seat comprising:

[0009] Multiple vents are provided, and the multiple vents are spaced apart circumferentially.

[0010] A sealing structure, wherein the sealing structure protrudes from the inner wall of the valve seat;

[0011] Valve plate, the valve plate comprising:

[0012] Multiple first arcs, wherein the multiple first arcs are concentric;

[0013] A plurality of second arcs protrude beyond the plurality of first arcs. Along the circumferential direction, a first arc is positioned between two adjacent second arcs. The number of the plurality of second arcs is equal to the number of the plurality of first arcs and is an odd number.

[0014] When the one-way valve is under positive pressure, the valve plate is not in contact with the sealing structure, and the plurality of vent holes are connected to the outside.

[0015] When the one-way valve is under negative pressure, the valve plate contacts the sealing structure and covers the plurality of vent holes.

[0016] Using the above technical solution, when the check valve is under positive pressure, the valve plate will gradually rise under the force of the external airflow, and then disengage from the sealing structure of the check valve, presenting a suspended state, so as to realize the connection between multiple vent holes and the external airflow, thereby ensuring that the airflow can flow smoothly in the check valve in the positive direction, meeting the corresponding work process and system requirements.

[0017] When the check valve switches from a positive pressure state to a negative pressure state, the valve plate changes from a suspended state to contact with the sealing structure. By setting multiple first arcs and multiple second arcs, even in the extreme case where two of the second arcs of the valve plate contact the inner wall of the check valve during the descent of the valve plate, the valve plate can still cover multiple vent holes, thereby preventing airflow and ensuring that the check valve achieves a good sealing effect under negative pressure.

[0018] Unlike traditional valve plates, the valve plate in this technical solution does not require plastic parts as components, thus eliminating the need for the previous manufacturing process of integrating plastic and rubber parts. This reduction in manufacturing processes significantly shortens the production cycle, making the production process simpler and more efficient, enabling the valve plate to be manufactured in a shorter time. Furthermore, the consumption of human and material resources is also correspondingly reduced.

[0019] In summary, the valve plate in this technical solution can not only meet the gas flow requirements of the check valve under positive pressure, but also meet the sealing requirements of the check valve under negative pressure, while effectively reducing production costs and improving economic efficiency.

[0020] According to another specific embodiment of the present invention, the valve seat includes a circular base, the circular base having a plurality of vent holes spaced apart along the circumference, and the difference between the radius of each first arc and the radius of the circular base is in the range of 0.9mm to 1.1mm.

[0021] Using the above technical solution, when the one-way valve switches from a positive pressure state to a negative pressure state, the valve plate will change from a suspended state to contact with the sealing structure. During the descent of the valve plate, due to the combined influence of various factors, such as unstable airflow, uneven weight distribution of the valve plate itself, and minor disturbances in the surrounding environment, the valve plate cannot be absolutely guaranteed to fall into the valve seat in the most ideal state. Here, the most ideal state means that the center of the circular base coincides with the center of the first arc.

[0022] In reality, a rather extreme situation exists in actual operation. When the valve disc descends, the two second arcs of the valve disc will contact the inner wall of the check valve. To address this extreme situation and ensure a good sealing effect of the valve disc under all possible conditions, the difference between the radius of the first arc and the radius of the circular base is set to be between 0.9mm and 1.1mm. When the difference between the radius of the first arc and the radius of the circular base is greater than or equal to 0.9mm, even in the aforementioned extreme case, the valve disc can still contact the sealing structure and cover the multiple vent holes of the check valve, thereby ensuring a good sealing effect of the check valve under negative pressure.

[0023] From the perspective of saving materials, while meeting the sealing performance requirements, minimizing the difference in radius between the first arc and the circular base can effectively reduce the amount of raw materials used. Therefore, the difference in radius between the first arc and the circular base is set to be less than or equal to 1.1 mm.

[0024] In summary, this technical solution sets the difference between the radius of each first arc and the radius of the circular base to a range of 0.9mm to 1.1mm, which ensures the sealing performance of the valve plate while reducing the amount of raw materials used.

[0025] According to another specific embodiment of the present invention, along the radial direction, the distance from the first tangent point of the first arc to the corresponding second tangent point of the second arc is the first distance, the valve seat is circular, and the difference between the inner diameter of the valve seat and the first distance is in the range of 0.7mm to 1.1mm.

[0026] Using the above technical solution, when the check valve switches from a positive pressure state to a negative pressure state, the valve plate gradually descends from a suspended state until it contacts the sealing structure. During the descent of the valve plate, if the difference between the inner diameter of the valve seat and the first distance is less than 0.7 mm, the valve plate may interfere with the inner wall of the check valve. This interference will hinder the normal approach of the valve plate to the sealing structure, preventing the valve plate from contacting the sealing structure according to the predetermined trajectory. Consequently, the valve plate cannot effectively cover the multiple vent holes, failing to build a reliable sealing barrier, ultimately resulting in the inability to prevent the reverse flow of air, thus losing the sealing effect. If the difference between the inner diameter of the valve seat and the first distance is greater than 1.1 mm, the valve plate may not be able to completely cover the vent holes when it contacts the sealing structure, leading to sealing failure.

[0027] Therefore, this technical solution sets the difference between the inner diameter of the valve seat and the first distance to be in the range of 0.7mm to 1.1mm. During the descent of the valve plate, the valve plate will not interfere with the inner wall of the one-way valve. When the valve plate contacts the sealing structure, it completely covers the vent hole, ensuring a good sealing effect.

[0028] According to another specific embodiment of the present invention, a plurality of second tangent points form a first circle, the diameter of the first circle being 18.5mm to 22.3mm.

[0029] Using the above technical solution, when the one-way valve switches from a positive pressure state to a negative pressure state, the valve plate gradually descends from a suspended state until it contacts the sealing structure. During the descent of the valve plate, due to various factors such as turbulent airflow fluctuations, uneven shape and weight distribution of the valve plate itself, and minor tolerances in the internal structure of the one-way valve, there is a certain risk that the valve plate may fall into the vent hole. Once the valve plate falls into the vent hole, it will directly cause the one-way valve to malfunction and fail to achieve normal one-way airflow control. Therefore, this technical solution sets the diameter of the first circle to be greater than or equal to 18.5mm to ensure that the valve plate will not accidentally fall into the vent hole during the descent, thus ensuring the safety and stability of the valve plate's descent path.

[0030] However, it's important to note that a larger diameter for the first circle is not always better. If the diameter of the first circle exceeds 22.3mm, the valve disc may interfere with the inner wall of the check valve during its descent. This interference hinders the valve disc's normal approach to the sealing structure, preventing it from making contact with the sealing structure along the intended trajectory. Consequently, the valve disc cannot effectively cover the multiple vent holes, failing to build a reliable sealing barrier, ultimately resulting in the inability to prevent reverse airflow and loss of sealing effect.

[0031] Therefore, this technical solution sets the diameter of the first circle to 18.5mm to 22.3mm, which can ensure that the valve plate will not accidentally fall into the vent hole during the descent process, thus ensuring the safety and stability of the valve plate's descent path. It can also ensure that the valve plate will not interfere with the inner wall of the one-way valve during the descent process, so that the valve plate can make contact with the sealing structure according to the predetermined trajectory.

[0032] According to another specific embodiment of this utility model, the valve plate is made of an elastic element.

[0033] Using the above technical solution, when the check valve is under negative pressure, the external pressure is lower than the internal pressure, creating a suction force on the valve plate. Under this suction, the valve plate, being an elastic element, undergoes slight deformation, allowing for a tighter and more secure contact between the valve plate and the sealing structure. Through this close fit, the sealing interface between the valve plate and the sealing structure is optimized to minimize gaps and voids, effectively preventing reverse airflow and ultimately achieving an excellent sealing effect.

[0034] According to another specific embodiment of this utility model, the elastic element is a rubber element.

[0035] According to another specific embodiment of the present invention, the circular base includes a plurality of radially extending rib structures, which are spaced apart along the circumferential direction to form the plurality of ventilation holes.

[0036] According to another specific embodiment of the present invention, the number of the first arc is three, and the number of the second arc is three.

[0037] According to another specific embodiment of this utility model, the number of vent holes is three.

[0038] According to another specific embodiment of the present invention, the valve seat includes a guide hole, and the valve plate does not include a guide structure adapted to the guide hole.

[0039] Traditional valve discs require a guide structure to engage with guide holes as they descend into the valve seat to ensure accurate descent. Using the aforementioned technical solution, the valve disc in this solution avoids interference with the inner wall of the check valve during descent, preventing it from failing to contact the sealing structure or cover the vent holes, and also avoids becoming trapped in the vent holes, thus preventing check valve malfunction. Therefore, the valve disc in this solution, without a guide structure, accurately covers multiple vent holes and contacts the sealing structure. This eliminates the need for a guide structure during valve disc manufacturing, significantly shortening the production cycle and making the production process simpler and more efficient, allowing for valve disc production in a shorter time. Furthermore, it reduces the consumption of human and material resources. Attached Figure Description

[0040] Figure 1 A perspective view of a one-way valve according to an embodiment of the present invention is shown.

[0041] Figure 2 A cross-sectional view of a one-way valve according to an embodiment of the present invention is shown.

[0042] Figure 3 A schematic diagram of the valve plate according to an embodiment of the present invention is shown.

[0043] Explanation of reference numerals in the attached figures

[0044] One-way valve 100;

[0045] Valve seat 10;

[0046] Vent 11;

[0047] Sealing structure 12;

[0048] Circular base 13; Rib structure 131;

[0049] Guide hole 14;

[0050] Valve plate 20;

[0051] First arc 21; First tangent point 211;

[0052] Second arc 22; Second tangent point 221;

[0053] First circle 23. Detailed Implementation

[0054] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0055] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0056] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not 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 the utility model.

[0057] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0058] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0059] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0060] refer to Figures 1 to 3 This application provides a one-way valve 100, which includes a valve seat 10 and a valve plate 20. The valve seat 10 includes three vent holes 11 and a sealing structure 12. The three vent holes 11 are fan-shaped and are spaced apart along the circumferential direction R. The sealing structure 12 is circular and protrudes from the inner wall of the valve seat 10.

[0061] The valve plate 20 includes three first arcs 21 and three second arcs 22, with the three first arcs 21 having the same center. The three second arcs 22 protrude from the three first arcs 21 respectively. Along the circumferential direction R, a first arc 21 is provided between two adjacent second arcs 22. The number of second arcs 22 is equal to the number of first arcs 21 and is odd.

[0062] When the one-way valve 100 is under positive pressure, the valve plate 20 is not in contact with the sealing structure 12, and the three vent holes 11 are connected to the outside.

[0063] When the one-way valve 100 is under negative pressure, the valve plate 20 contacts the sealing structure 12 and covers the three vent holes 11.

[0064] Using the above technical solution, when the one-way valve 100 is in a positive pressure state, the valve plate 20 will gradually rise under the force of the external airflow, and then disengage from the sealing structure 12 of the one-way valve 100, presenting a suspended state, so as to realize the airflow of the three vents 11 to the outside, thereby ensuring that the airflow can flow smoothly in the one-way valve 100 in the positive direction, and meeting the corresponding work process and system requirements.

[0065] When the one-way valve 100 switches from a positive pressure state to a negative pressure state, the valve plate 20 changes from a suspended state to contact with the sealing structure 12. By setting three first arcs 21 and three second arcs 22, even in the extreme case where two of the second arcs 22 of the valve plate 20 contact the inner wall of the one-way valve 100 during the descent of the valve plate 20, the valve plate 20 can still cover the three vent holes 11, thereby preventing the flow of air and ensuring that the one-way valve 100 achieves a good sealing effect under negative pressure.

[0066] Unlike traditional valve plates, the valve plate 20 in this technical solution does not require plastic parts as components, thus eliminating the need for the previous manufacturing process of integrating plastic and rubber parts. This reduction in manufacturing processes significantly shortens the production cycle, making the production process simpler and more efficient, enabling the valve plate 20 to be manufactured in a shorter time. Furthermore, the consumption of human and material resources is also correspondingly reduced.

[0067] In summary, the valve plate 20 in this technical solution can not only meet the gas flow requirements of the one-way valve 100 under positive pressure, but also meet the sealing requirements of the one-way valve 100 under negative pressure, while effectively reducing production costs and improving economic efficiency.

[0068] It should be noted that the number of vent holes 11 is not specifically limited in this embodiment. For example, in other possible implementations, the number of vent holes 11 may be two, four, five, etc. Similarly, the number of first arcs 21 is not specifically limited in this embodiment. For example, in other possible implementations, the number of first arcs 21 may be five, seven, etc. Likewise, the number of second arcs 22 is not specifically limited in this embodiment. For example, in other possible implementations, the number of second arcs 22 may be five, seven, etc.

[0069] It should be noted that the shape of the vent 11 is not specifically limited in this embodiment. For example, in other possible implementations, the shape of the vent 11 can be circular, rectangular, elliptical, polygonal, etc. Similarly, the shape of the sealing structure 12 is not specifically limited in this embodiment. For example, in other possible implementations, the shape of the sealing structure 12 can be rectangular, elliptical, polygonal, etc.

[0070] In some possible implementations, refer to Figures 1 to 3 The valve seat 10 includes a circular base 13, which has three vent holes 11 spaced apart along the circumferential direction R. The difference between the radius R1 of each first arc 21 and the radius R2 of the circular base 13 is in the range of 0.9 mm to 1.1 mm.

[0071] Using the above technical solution, when the one-way valve 100 switches from a positive pressure state to a negative pressure state, the valve plate 20 will change from a suspended state to contact with the sealing structure 12. During the descent of the valve plate 20, due to the combined influence of various factors, such as unstable airflow, uneven weight distribution of the valve plate 20 itself, and minor disturbances in the surrounding environment, the valve plate 20 cannot be absolutely guaranteed to fall into the valve seat 10 in the most ideal state. Here, the most ideal state means that the center of the circular base coincides with the center of the first circular arc 21.

[0072] In fact, a rather extreme situation exists in actual working conditions. When the valve plate 20 descends, the two second arcs 22 of the valve plate 20 will contact the inner wall of the one-way valve 100. To cope with this extreme situation and ensure that the valve plate 20 can achieve a good sealing effect under all possible conditions, the difference between the radius R1 of the first arc 21 and the radius R2 of the circular base 13 is set to be between 0.9mm and 1.1mm. When the difference between the radius R1 of the first arc 21 and the radius R2 of the circular base 13 is greater than or equal to 0.9mm, even under the above extreme situation, the valve plate 20 can still contact the sealing structure 12 and cover the three vent holes 11 of the one-way valve 100, thereby ensuring a good sealing effect of the one-way valve 100 under negative pressure environment.

[0073] From the perspective of saving materials, while meeting the sealing performance, minimizing the difference between the radius R1 of the first arc 21 and the radius R2 of the circular base 13 can effectively reduce the amount of raw materials used. Therefore, the difference between the radius R1 of the first arc 21 and the radius R2 of the circular base 13 is set to be less than or equal to 1.1 mm.

[0074] In summary, this technical solution sets the difference between the radius R1 of each first arc 21 and the radius R2 of the circular base 13 to be within the range of 0.9mm to 1.1mm, which ensures the sealing performance of the valve plate 20 while reducing the amount of raw materials used.

[0075] It should be noted that the present application does not impose specific limitations on the difference between the radius R1 of each first arc 21 and the radius R2 of the circular base 13. For example, in other possible implementations, the difference between the radius R1 of each first arc 21 and the radius R2 of the circular base 13 can be 0.9mm, 0.96mm, 1.03mm, 1.1mm, etc.

[0076] In some possible implementations, refer to Figures 1 to 3 Along the radial direction, the distance from the first tangent point 211 of the first arc 21 to the corresponding second tangent point 221 of the second arc 22 is the first distance L1. The valve seat 10 is circular, and the difference between the inner diameter D1 of the valve seat 10 and the first distance L1 is in the range of 0.7mm to 1.1mm.

[0077] Using the above technical solution, when the one-way valve 100 switches from a positive pressure state to a negative pressure state, the valve plate 20 will gradually descend from a suspended state until it contacts the sealing structure 12. During the descent of the valve plate 20, if the difference between the inner diameter D1 of the valve seat 10 and the first distance L1 is less than 0.7 mm, the valve plate 20 may interfere with the inner wall of the one-way valve 100. This interference will hinder the normal approach of the valve plate 20 to the sealing structure 12, preventing the valve plate 20 from contacting the sealing structure 12 according to the predetermined trajectory. Consequently, the valve plate 20 cannot effectively cover the three vent holes 11, failing to build a reliable sealing barrier, ultimately resulting in the inability to prevent the reverse flow of air, thus losing the sealing effect. If the difference between the inner diameter D1 of the valve seat 10 and the first distance L1 is greater than 1.1 mm, then when the valve plate 20 contacts the sealing structure 12, it may not be able to completely cover the vent holes 11, leading to sealing failure.

[0078] Therefore, in this technical solution, the difference between the inner diameter D1 of the valve seat 10 and the first distance L1 is set to be 0.7mm to 1.1mm. During the descent of the valve plate 20, the valve plate 20 will not interfere with the inner wall of the one-way valve 100. When the valve plate 20 contacts the sealing structure 12, it completely covers the vent hole 11, ensuring a good sealing effect.

[0079] It should be noted that the present application does not impose specific limitations on the value of the difference between the inner diameter D1 of the valve seat 10 and the first distance L1. For example, in other possible implementations, the value of the difference between the inner diameter D1 of the valve seat 10 and the first distance L1 can be 0.7mm, 0.86mm, 0.97mm, 1.1mm, etc.

[0080] In some possible implementations, refer to Figures 1 to 3 The three second tangent points 221 form the first circle 23, and the diameter D2 of the first circle 23 is 18.5mm to 22.3mm.

[0081] Using the above technical solution, when the one-way valve 100 switches from a positive pressure state to a negative pressure state, the valve plate 20 will gradually descend from a suspended state until it contacts the sealing structure 12. During the descent of the valve plate 20, due to various factors such as turbulent airflow fluctuations, uneven shape and weight distribution of the valve plate 20 itself, and minor tolerances in the internal structure of the one-way valve 100, there is a certain risk that the valve plate 20 may fall into the vent hole 11. Once the valve plate 20 falls into the vent hole 11, it will directly cause the one-way valve 100 to malfunction and fail to achieve normal one-way airflow control. Therefore, this technical solution sets the diameter D2 of the first circle 23 to be greater than or equal to 18.5 mm to ensure that the valve plate 20 will not accidentally fall into the vent hole 11 during the descent, thus ensuring the safety and stability of the descent path of the valve plate 20.

[0082] However, it's important to note that a larger diameter D2 of the first circle 23 is not necessarily better. If the diameter D2 of the first circle 23 is greater than 22.3 mm, the valve plate 20 may interfere with the inner wall of the one-way valve 100 during its descent. This interference will hinder the valve plate 20 from properly approaching the sealing structure 12, preventing it from making contact with the sealing structure 12 along the intended trajectory. Consequently, the valve plate 20 will not be able to effectively cover the multiple vent holes 11, failing to build a reliable sealing barrier, ultimately resulting in the inability to prevent the reverse flow of air and thus losing its sealing effect.

[0083] Therefore, the diameter D2 of the first circle 23 in this technical solution is set to be 18.5mm to 22.3mm. This ensures that the valve plate 20 will not accidentally fall into the vent hole 11 during the descent process, thus guaranteeing the safety and stability of the descent path of the valve plate 20. It also ensures that the valve plate 20 will not interfere with the inner wall of the one-way valve 100 during the descent process, so that the valve plate 20 can make contact with the sealing structure 12 according to the predetermined trajectory.

[0084] It should be noted that the embodiment of this application does not impose specific limitations on the value of the diameter D2 of the first circle 23. For example, in other possible implementations, the value of the diameter D2 of the first circle 23 can be 18.5mm, 19.7mm, 21.4mm, 22.3mm, etc.

[0085] In some possible implementations, the valve plate 20 is made of an elastic element.

[0086] Using the above technical solution, when the one-way valve 100 is in a negative pressure state, the external pressure is lower than the internal pressure, which generates a suction force on the valve plate 20. Under the suction force, the valve plate 20, being an elastic element, can undergo slight deformation, allowing the valve plate 20 to form a tighter and more secure contact with the sealing structure 12. Through this tight fit, the sealing interface between the valve plate 20 and the sealing structure 12 is optimized to eliminate gaps and voids to the greatest extent possible, thereby effectively preventing the reverse flow of air and ultimately achieving an excellent sealing effect.

[0087] In some possible implementations, the elastic element is a rubber element.

[0088] In some possible implementations, refer to Figures 1 to 3 The circular base 13 includes three radially extending rib structures 131, which are spaced apart in the circumferential direction R to form three vent holes 11.

[0089] It should be noted that the number of rib structures 131 is not specifically limited in this embodiment. For example, in other possible implementations, the number of rib structures 131 may be two, four, five, etc.

[0090] In some possible implementations, refer to Figures 1 to 3 The valve seat 10 includes a guide hole 14, and the valve plate 20 does not include a guide structure adapted to the guide hole 14.

[0091] Traditional valve discs require a guide structure to engage with the guide hole 14 of the valve seat 10 when descending into the valve seat 10 to ensure accurate descent. Using the above-mentioned technical solution, combined with the foregoing, the valve disc 20 in this solution will not interfere with the inner wall of the one-way valve 100 during descent, thus preventing it from contacting the sealing structure 12 and covering the vent hole 11, nor will it become trapped in the vent hole 11, causing the one-way valve 100 to malfunction. Therefore, the valve disc 20 in this solution, without a guide structure, can accurately cover the three vent holes 11 and contact the sealing structure 12. The step of manufacturing the guide structure is also eliminated during the production of the valve disc 20. This reduction in manufacturing processes significantly shortens the production cycle, making the production process simpler and more efficient, allowing the valve disc 20 to be manufactured in a shorter time. Furthermore, the consumption of human and material resources is also reduced accordingly.

[0092] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A one-way valve, characterized in that, The one-way valve includes: Valve seat, the valve seat comprising: Multiple vents are provided, and the multiple vents are spaced apart circumferentially. A sealing structure, wherein the sealing structure protrudes from the inner wall of the valve seat; Valve plate, the valve plate comprising: Multiple first arcs, wherein the multiple first arcs are concentric; A plurality of second arcs protrude beyond the plurality of first arcs. Along the circumferential direction, a first arc is positioned between two adjacent second arcs. The number of the plurality of second arcs is equal to the number of the plurality of first arcs and is an odd number. When the one-way valve is under positive pressure, the valve plate is not in contact with the sealing structure, and the plurality of vent holes are connected to the outside. When the one-way valve is under negative pressure, the valve plate contacts the sealing structure and covers the plurality of vent holes.

2. The one-way valve as described in claim 1, characterized in that, The valve seat includes a circular base with a plurality of vent holes spaced apart along the circumference, wherein the difference between the radius of each first arc and the radius of the circular base is in the range of 0.9 mm to 1.1 mm.

3. The one-way valve as described in claim 1, characterized in that, Along the radial direction, the distance from the first tangent point of the first arc to the corresponding second tangent point of the second arc is the first distance. The valve seat is circular, and the difference between the inner diameter of the valve seat and the first distance is in the range of 0.7mm to 1.1mm.

4. The one-way valve as described in claim 3, characterized in that, Multiple second tangent points form a first circle, the diameter of which is 18.5 mm to 22.3 mm.

5. The one-way valve as described in claim 1, characterized in that, The valve plate is made of an elastic material.

6. The one-way valve as described in claim 5, characterized in that, The elastic element is a rubber element.

7. The one-way valve as described in claim 2, characterized in that, The circular base includes a plurality of radially extending rib structures, which are spaced apart circumferentially to form the plurality of ventilation holes.

8. The one-way valve as described in claim 1, characterized in that, The number of the first arc is three, and the number of the second arc is three.

9. The one-way valve as described in claim 1, characterized in that, The number of vents is three.

10. The one-way valve as claimed in claim 1, characterized in that, The valve seat includes a guide hole, and the valve plate does not include a guide structure adapted to the guide hole.

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