One-way valve
By using a valve plate made of flexible material to seal the inlet channel through face-to-face contact with the sealing part, the problems of poor sealing effect and high production cost in the prior art are solved, and the one-way valve achieves efficient sealing and simplifies production.
Patent Information
- Application Number
- CN202423134142.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-18
AI Technical Summary
The valve core of existing one-way valves is prone to deformation when the rubber and plastic skeleton are combined, resulting in poor sealing performance, high production costs, and slow response speed.
The valve plate, made of flexible material, seals the inlet channel through surface-to-surface contact with the sealing part, eliminating the need for a plastic skeleton. The sealing effect is enhanced by inner and outer ring protrusions, and the valve plate deforms to fit the sealing surface under fluid pressure.
It improves the sealing effect of the check valve, simplifies the production process, reduces costs, and enhances the reliability of unidirectional fluid flow.
Smart Images
Figure CN223677090U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to one -way valve technical field especially is related to a one -way valve with movable valve piece. BACKGROUND
[0002] One-way valves can be used to direct the flow of fluids such as liquids or gases in one direction while preventing the flow of fluids in the opposite direction. Therefore, one-way valves are widely used in various fields, for example, in the oil-gas separation system of a vehicle.
[0003] The valve core of the prior art one-way valve usually uses a structure of a plastic skeleton wrapped with rubber, wherein the rubber extrudes the sealing surface of the valve body to achieve sealing of the through hole connecting the inlet channel and the outlet channel, and a line contact is formed between the rubber and the valve body. However, in the known scheme, the deformation of the plastic skeleton is caused when the rubber is injection molded into the plastic skeleton by a mold, which affects the sealing effect; the cost of secondary injection molding of the two materials is high, and the production process is complex; and the weight of the valve body made thereby is also relatively large, which has a high requirement for the minimum one-way sealing pressure and a slow reaction speed. SUMMARY
[0004] The utility model aims at solving at least one of the above problems and / or other problems in the prior art.
[0005] To this end, the utility model provides a one-way valve, which comprises a valve body, a valve cover and a valve piece. The valve body is formed with an inlet channel and comprises a closed portion closing the inlet channel downstream of the inlet channel; the valve cover is formed with an outlet channel, and the valve cover is connected to the valve body and cooperates with the valve body to form a valve cavity between the outlet channel and the closed portion; the valve piece is arranged in the valve cavity and is arranged to be movable between a first position contacting the closed portion and a second position away from the closed portion; wherein the closed portion has a closed surface facing the valve piece, the closed surface is provided with a through hole communicating the inlet channel and the valve cavity, and the closed surface and the valve piece are configured such that the valve piece can be attached to the closed surface and close the through hole in the first position.
[0006] According to an embodiment of the utility model, the closed portion is annular and comprises an inner ring end portion and an outer ring end portion surrounding the closed surface, and a plurality of through holes are distributed at equal intervals between the inner ring end portion and the outer ring end portion.
[0007] According to an embodiment of the utility model, the outer ring end portion is protruded towards the valve cavity, the valve piece has an annular form with an outer diameter greater than or equal to the diameter of the outer ring end portion, and the valve piece is made of a flexible material so as to be able to abut against the closed surface by deformation in the first position.
[0008] According to an embodiment of the present application, the inner ring end portion is protruded towards the valve cavity, the valve disc has an inner diameter smaller than or equal to the diameter of the inner ring end portion, and is configured to abut against the closed surface between the inner ring end portion and the outer ring end portion in the first position by deforming.
[0009] According to an embodiment of the present application, a pin portion extending towards the valve cavity is arranged at the center of the closed portion, and a pin hole cooperating with the pin portion is arranged at the center of the valve disc, so that the valve disc can move along the pin portion between the first position and the second position.
[0010] According to an embodiment of the present application, the valve cover comprises a plurality of flow guiding portions arranged at the upstream of the outlet passage and equidistantly arranged in a ring shape, the flow guiding portions define a cavity for receiving the pin portion, and flow-through holes connecting the valve cavity and the outlet passage are formed between the flow guiding portions.
[0011] According to an embodiment of the present application, the cover portion of the valve cover is provided with a valve cover outer ring portion and a valve cover inner ring portion at the periphery and spaced apart from each other and respectively extending away from the outlet passage, so that a groove for cooperating with the outer peripheral end portion of the valve body is formed between the valve cover outer ring portion and the valve cover inner ring portion.
[0012] According to an embodiment of the present application, the valve disc is made of rubber material.
[0013] The present application simplifies the structure of the one-way valve, cancels the plastic framework, and changes the cooperation mode between the valve disc and the closed portion of the inlet passage in the valve body, so that the inlet passage is reversely blocked by the valve disc and the closed portion in a face-to-face contact mode, thereby improving the sealing effect.
[0014] In particular, the inner ring end portion and / or the outer ring end portion surrounding the closed surface of the closed portion can be respectively configured as an inner ring protrusion and / or an outer ring protrusion protruding relative to the closed surface, and the valve disc can be a flexible ring-shaped disc which can be deformed to fit the closed surface under the pressure of the reverse fluid flow to prevent the reverse flow of fluid (i.e. from the outlet passage to the inlet passage), while the inner ring protrusion and / or the outer ring protrusion can advantageously prevent the fluid from passing through the closed surface from the side (i.e. from the side or peripheral surface of the valve disc), thereby optimizing the sealing effect and improving the reliability of the one-way flow of fluid in the valve. BRIEF DESCRIPTION OF DRAWINGS
[0015] The features and advantages of the present application will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings provided only by way of illustration, and thus, are not to be considered limiting of the present application, in which:
[0016] Figure 1 a perspective view of a one-way valve according to an embodiment of the present application is shown;
[0017] Figure 2 a perspective view of a one-way valve according to an embodiment of the present application is shown; Figure 1 an exploded view of the one-way valve shown;
[0018] Figure 3 a perspective view of a one-way valve according to an embodiment of the present application is shown; Figure 1 a perspective view of a bonnet of the one-way valve shown;
[0019] Figure 4 a perspective view of a one-way valve according to an embodiment of the present application is shown; Figure 1 a left view of the one-way valve shown;
[0020] Figure 5 a perspective view of a one-way valve according to an embodiment of the present application is shown; Figure 4 a sectional view along line A-A of the one-way valve shown, and the valve disc is in a first position, i.e. in a state of contacting and completely adhering to a closing surface of the closing part; and
[0021] Figure 6 a perspective view of a one-way valve according to an embodiment of the present application is shown; Figure 4 a sectional view along line A-A of the one-way valve shown, and the valve disc is in a second position, i.e. in a state of being away from the closing surface of the closing part.
[0022] BRIEF DESCRIPTION OF DRAWINGS
[0023] 1. valve body; 11, inlet passage; 12, closing part; 121, through hole; 122, closing surface; 123, inner ring end; 124, outer ring end; 13, outer peripheral end; 14, pin part; 2, bonnet; 21, outlet passage; 22, bonnet part; 23, flow guiding part; 24, flow passage; 25, bonnet outer ring part; 26, bonnet inner ring part; 27, groove; 3, valve cavity; 4, valve disc; 41, pin hole. DETAILED DESCRIPTION
[0024] Embodiments of the present application will be described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without some or all of these specific details. In other instances, well known process steps have not been described in detail in order not to unnecessarily obscure the present application. In addition, it is to be understood that the present application is not limited in its application to the particular embodiments described below. To the contrary, the present application is capable of practicing with various combinations of the aspects and features described below, whether they are considered to be different embodiments or not. Therefore, the following aspects, features, embodiments and advantages are merely illustrative and are not to be considered limiting in any way.
[0025] In the following, terms such as "first", "second" and the like are used to describe elements of the present application, and these terms are only used to distinguish one element from another, rather than to limit the nature, order or number of these elements. The terms "comprise" and "have" are used to mean an open-ended inclusion, and refer to the presence of additional elements / components in addition to the listed elements / components.
[0026] Figure 1 and Figure 2 A one-way valve according to an embodiment of the present application is shown. As shown in Figure 1 and Figure 2 , the one-way valve according to this embodiment can include a valve body 1, a valve cover 2, a valve cavity 3 formed by the valve body 1 and the valve cover 2 together, and a valve disc 4 movably arranged in the valve cavity 3.
[0027] Figures 4-6 The internal structure of the one-way valve according to this embodiment is shown. In this embodiment, the valve body 1 can include a valve body main part formed with an inlet passage 11, a closing part 12 arranged in the valve body main part and located at the downstream end of the inlet passage 11, and an outer peripheral end part 13 extending from the outer periphery of the closing part 12 to the side away from the inlet passage 11. The upstream and downstream herein are defined with respect to the flow direction of the fluid when the one-way valve is in the conducting state, for example, in the conducting state of the one-way valve shown in Figure 6 , the fluid flows from right to left in the one-way valve, and thus the right side of the valve body 1 can be defined as the upstream of the inlet passage 11, and the left side of the valve body 1 can be defined as the downstream of the inlet passage 11.
[0028] Especially referring to Figure 2 and Figures 5-6 , the closing part 12 is located inside the circumference of the outer peripheral end part 13, and has a closing surface 122 and a through hole 121 penetrating the closing surface 122. The through hole 121 is arranged within the area range of the closing surface 122, and communicates with the inlet passage 11. Optionally, the closing part 12 can be substantially annular and can include an inner ring end part 123 and an outer ring end part 124 around the inner periphery and the outer periphery of the closing surface 122 (see Figures 5-6 ). The number of through holes 121 can be multiple, for example, six as shown in Figure 2 , and can be equally spaced along the circumference of the closing part 12, so as to facilitate the more balanced impact force of the fluid on the closing part 12.
[0029] Figure 3 Especially the structure of the valve cover 2 according to the present embodiment is shown. In combination with Figure 3 , Figure 5 and Figure 6The valve cover 2 may include a pipe-shaped outlet channel 21, a cover portion 22 connected upstream of the outlet channel 21, and an outer ring portion 25 and an inner ring portion 26 disposed around the periphery of the cover portion 22. The cover portion 22 expands radially outward from the axial end of the outlet channel 21 in an approximately trumpet-shaped manner, thereby defining the valve cavity 3 together with the outer peripheral end portion 13 of the valve body 1 in the assembled state, and gradually changing the flow direction and flow area of the fluid entering the outlet channel 21 through the valve cavity 3. The outer ring portion 25 and the inner ring portion 26 extend relative to the cover portion 22 and in a direction away from the outlet channel 21. They may be concentric and have different diameters, thereby forming a groove 27 between them. The outer peripheral end portion 13 of the valve body 1 may be engaged into the groove 27 to fit together and, for example, to attach the valve cover 2 to the valve body 1 by adhesive. Thus, the valve cavity 3 forms a transition space or connection space between the outlet channel 21 and the inlet channel 11. The closed surface 122 of the valve body 1 faces the valve cavity 3, and the valve cavity 3 and the inlet channel 11 are connected via the through hole 121.
[0030] Advantageously, a pin 14 is formed at the center of the closure portion 12 of the valve body 1, that is, radially inward at the inner end 124 of the inner ring. The pin 14 may be in the form of a column and extend toward the valve cavity 3. The valve plate 4 may be fitted onto the pin 14 so that it can move within the valve cavity 3, guided by the pin 14, between a first position abutting or fitting against the closure portion 12 and a second position away from the closure portion 12.
[0031] Advantageously, a plurality of flow guides 23 are provided at equal intervals along the circumferential direction on the cover portion 22 of the valve cover 2 and at the upstream end of the outlet channel 21. These flow guides 23 extend toward the valve cavity 3, thereby guiding the fluid flowing from the valve cavity 3 to the outlet channel 21. Preferably, each flow guide 23 is generally hook-shaped, i.e., as shown in the image. Figure 3 , 5 As shown in Figure 6, the device has a first section extending axially along the outlet channel 21 and a second section extending radially along the outlet channel 21. A cavity for receiving the pin 14 is defined at the center of the second section of the plurality of guide sections 23, and one end of the pin 14 facing away from the closure portion 12 can be inserted into and held within this cavity. A flow passage 24 is formed between each pair of adjacent guide sections 23, connecting the valve chamber 3 and the outlet channel 21, allowing fluid in the valve chamber 3 to enter the outlet channel 21 via the flow passage 24.
[0032] The valve disc 4 can have a form that matches the closing portion 12 of the valve body 1, and especially its closing surface 122. Specifically, the valve disc 4 can be circular or annular and constructed as a flat, sheet-like piece. The valve disc 4 may have a central pin hole 41 for a pin 14 to pass through, thereby allowing the valve disc 4 to slide on the pin 14, as... Figure 5 and Figure 6shown. Figure 5 In the case where the fluid flows from left to right in the outlet channel 21, the valve piece 4 can be pushed to the first position in contact with the closing portion 12, thereby closing the through hole 121 and causing the one-way valve to close, so as to avoid the fluid from flowing back into the inlet channel 11. Figure 6 In the case where the fluid flows from right to left in the inlet channel 11, the valve piece 4 can be pushed away from the closing portion 12, thereby causing the through hole 121 to be exposed and the inlet channel 11, the valve cavity 3 and the outlet channel 21 to be in communication.
[0033] In the above embodiment, the valve piece 4 can be made of a flexible material, such as rubber or silicone, and has a relatively thin thickness so as to be able to deform to a certain extent under the impact of the fluid. Preferably, the outer diameter of the valve piece 4 is greater than or equal to the outer diameter of the closing surface 122 and less than or equal to the inner diameter of the outer peripheral end portion 13. Thus, when deformed under the impact of the fluid, the valve piece 4 can be partially or completely fitted to the closing surface 122, thereby closing the through hole 121 and preventing the fluid from flowing from the outlet channel 21 to the inlet channel 11 (i.e. preventing reverse flow); or the valve piece 4 can be away from the closing surface 122 and bent against the flow guide portion 23 at the periphery, thereby releasing the through hole 121 and forming a flow passage between the outer peripheral end portions 13, so as to allow the fluid to flow from the inlet channel 11 to the outlet channel 21 (i.e. allowing forward flow).
[0034] Optionally, the closing surface 122 can be a circular arc surface gradually concave from the outer ring end portion 124 to the inner ring end portion 123, so that the valve piece 4 can be completely fitted thereto after deformation. Of course, the closing surface 122 can also be a flat surface. At this time, the valve piece 4 can be a flat plate made of a rigid material or a flexible material, and can have a shape matching, especially identical to, the closing surface 122.
[0035] Preferably, the inner ring end portion 123 and the outer ring end portion 124 around the closing surface 122 can be respectively convex towards the valve cavity 3 relative to the closing surface 122, and the flexible valve piece 4 can be fitted to the closing surface 122 between the convex inner ring end portion 123 and the outer ring end portion 124 by deforming under the pressure of the reverse fluid, thereby closing the through hole 121, while the convex inner and outer ring end portions 123, 124 can prevent the edges of the valve piece 4 and the closing surface 122 from forming a gap allowing the fluid to flow, thereby better ensuring the sealing between the valve piece 4 and the closing surface 122 that are fitted to each other. In this case, the valve piece 4 is especially annular, and has an outer diameter greater than or equal to the diameter of the outer ring end portion 124 and an inner diameter less than or equal to the diameter of the inner ring end portion 124.
[0036] In the one-way valve, the valve piece 4 and the closed part 12 are attached in a face-to-face contact form, the sealing effect of the through hole 121 in the closed part 12 aiming at connecting the inlet channel 11 and the outlet channel 21 is improved, and the one-way flow of the valve is ensured. Moreover, compared with the valve core formed by the secondary injection molding of rubber on the plastic framework in the prior art, the one-way valve of the utility model is made of the flexible rubber sheet to make the valve piece 4, the deformation of the plastic framework caused by the secondary injection molding is avoided, the structure and the production process of the valve are simplified, and the production cost is reduced.
[0037] Various modifications and changes can be made to the embodiments disclosed herein without departing from the scope or spirit of the present disclosure. Other embodiments of the present disclosure will be apparent to those of ordinary skill in the art from the disclosure and description of the present disclosure. The present disclosure and its disclosed examples are to be considered as illustrative only, the true scope of the present disclosure being indicated by the appended claims and their equivalents.
Claims
1. A one-way valve characterized by, The one-way valve comprises: a valve body (1) formed with an inlet channel (11) and comprising a closing portion (12) closing the inlet channel (11) downstream of the inlet channel (11); a valve cover (2) formed with an outlet channel (21), the valve cover (2) being connected to the valve body (1) and enclosing the valve body (1) to form a valve cavity (3) between the outlet channel (21) and the closing portion (12); and a valve disc (4) arranged in the valve cavity (3) and arranged to be movable between a first position in contact with the closing portion (12) and a second position away from the closing portion (12); wherein the closing portion (12) has a closing surface (122) facing the valve disc (4), the closing surface (122) being provided with a through hole (121) communicating the inlet channel (11) and the valve cavity (3), and the closing surface (122) and the valve disc (4) are configured such that the valve disc (4) can fit the closing surface (122) and close the through hole (121) in the first position.
2. The one-way valve of claim 1, wherein The closing portion (12) is annular and comprises an inner annular end (123) surrounding the closing surface (122) and an outer annular end (124), a plurality of through holes (121) being distributed equidistantly between the inner annular end (123) and the outer annular end (124).
3. The one-way valve of claim 2, wherein, The outer annular end (124) is convex towards the valve cavity (3), the valve disc (4) has an annular form with an outer diameter greater than or equal to the diameter of the outer annular end (124), and the valve disc (4) is made of a flexible material so as to be able to deform against the closing surface (122) in the first position.
4. The one-way valve of claim 3, wherein The inner annular end (123) is convex towards the valve cavity (3), the valve disc (4) has an inner diameter less than or equal to the diameter of the inner annular end (123), and is configured to be able to deform against the closing surface (122) between the inner annular end (123) and the outer annular end (124) in the first position.
5. The one-way valve according to any one of claims 1 to 4, characterized in that A pin portion (14) extending towards the valve cavity (3) is provided in the center of the closing portion (12), and a pin hole (41) cooperating with the pin portion (14) is provided in the center of the valve disc (4) to enable the valve disc (4) to move along the pin portion (14) between the first position and the second position.
6. The one-way valve of claim 5, wherein, The valve cover (2) comprises a plurality of flow guide portions (23) arranged upstream of the outlet channel (21) and equidistantly annularly arranged, the flow guide portions (23) defining cavities for receiving the pin portion (14), and flow-through holes (24) communicating the valve cavity (3) and the outlet channel (21) being formed between the flow guide portions (23).
7. The one-way valve according to any one of claims 1 to 4, characterized in that The cover body part (22) of the valve cover (2) is provided with a valve cover outer ring part (25) and a valve cover inner ring part (26) at the periphery, which are spaced apart from each other and respectively extend away from the outlet passage (21), whereby a groove (27) for cooperating with the outer peripheral end part (13) of the valve body (1) is formed between the valve cover outer ring part (25) and the valve cover inner ring part (26).
8. The one-way valve according to any one of claims 1 to 4, characterized in that The valve piece (4) is made of rubber material.