One-way valve

Abstract

The utility model relates to a one-way valve, which comprises a valve shell, a valve core, a valve core, a valve core, a valve core and a valve core, and is characterized in that a cavity is formed in the valve shell; the one-way valve is provided with a cavity, the valve element is arranged in the cavity, the valve element is provided with a valve element body and a valve element surrounding the valve element body and extending from the valve element body, and the one-way valve is switched between a closed position and an open position through movement of the valve element relative to the valve element body; the one-way valve has a closed position in which the valve element abuts against an inner wall of the chamber, and an open position in which the valve element at least partially leaves the inner wall of the chamber, and further has a retaining member for retaining the valve element, which retaining member is arranged upstream of the valve element in the direction of fluid flow, the retaining member has a bottom and an annular continuous circumferential wall, which are connected to each other by ribs. Therefore, the one-way valve can operate more stably.

Description

Technical Field

[0001] The utility model generally relates to a one-way valve. Background Art

[0002] One-way valves are widely used in various fluid systems, so that the fluid passing through the one-way valve can only flow in one direction but not in the opposite direction.

[0003] In the prior art, a one-way valve is widely used in, for example, pneumatic brake lines of commercial vehicles to control the one-way flow of air. In the event of air leakage in the air supply line, the air pressure at the rear end of the one-way valve is not affected, thereby maintaining pressure.

[0004] Existing one-way valves generally include a valve seat, a valve core and an elastic element. The one-way valve can switch between a closed position and an open position. When the fluid flows in one direction, the valve core abuts against the valve seat under the action of the fluid and the elastic element, so that the one-way valve is in a closed position to block the flow of the fluid. When the fluid flows in the opposite direction, when the pressure of the fluid on the valve core exceeds a threshold, the pressure overcomes the constraint of the elastic element on the valve core, causing the valve core to leave the valve seat and the one-way valve to be in an open position, so that the fluid can flow through the one-way valve.

[0005] The supporting structure of the valve element of the prior art one-way valve has the problem of insufficient support. When there is no air intake at the input port and the pressure at the output port is too high, the valve may bend and fail. Utility Model Content

[0006] Based on this, the purpose of the utility model is to provide a one-way valve, which can operate more stably than the valves in the prior art.

[0007] Another object of the utility model is to provide a one-way valve, which effectively improves the force of the valve core and prolongs the service life of the one-way valve.

[0008] According to a first aspect of the utility model, a one-way valve is provided, wherein the one-way valve comprises:

[0009] a valve housing having a chamber formed therein; and

[0010] a valve core, the valve core being disposed in the chamber, the valve core having a valve core body and a valve element surrounding the valve core body and extending from the valve core body,

[0011] The one-way valve is switched between a closed position and an open position by movement of the valve element relative to the valve core body, wherein in the closed position, the valve element abuts against the inner wall of the chamber, and in the open position, the valve element at least partially leaves the inner wall of the chamber.

[0012] The non-return valve further comprises a retaining member for retaining the valve element, which is arranged upstream of the valve element in the fluid flow direction, and comprises a bottom and an annular continuous circumferential wall, wherein the bottom and the circumferential wall are connected to each other by ribs.

[0013] According to the utility model, the retaining member has a continuous circumferential wall, and the bottom of the retaining member and the circumferential wall are connected to each other by ribs, so that when there is no air intake at the input port and there is pressure at the output port, the circumferential wall of the retaining member can achieve more sufficient and powerful support for the valve element, so that the valve element will not bend toward the input port. At the same time, the through-flow port is defined by the ribs, so that the flow requirement can be more effectively met.

[0014] According to an advantageous embodiment of the utility model, the valve element is inclined relative to the inner wall of the chamber against the inner wall of the chamber. In addition, advantageously, the valve core is umbrella-shaped. Thus, the valve element can be further reliably prevented from folding when there is no air intake at the input port and pressure at the output port.

[0015] In an embodiment of the non-return valve, the retaining member is bowl-shaped and / or pot-shaped, whereby a more adequate support of the valve element can be achieved.

[0016] In an embodiment of the non-return valve, the ribs are evenly distributed between the bottom and the circumferential wall, thereby enabling even distribution of the through-flow holes in the circumferential direction, thereby regulating even flow through the retaining element.

[0017] In one embodiment of the one-way valve, the one-way valve further comprises a first support member fixed in the chamber, the valve core is fitted to and supported by the first support member, the first support member is fixed in the chamber by a threaded connection, a first shoulder for the first support member is formed on the inner wall of the chamber, and one end of the first support member abuts against the first shoulder. Thus, the first support member can be reliably positioned in the chamber, and the valve core can be reliably positioned.

[0018] In one embodiment of the one-way valve, the one-way valve further comprises a second support member fixed in the chamber, a second shoulder is formed on the inner wall of the chamber, the second support member abuts against the second shoulder with one end of the second support member facing away from the valve core, and the valve core is arranged between the first support member and the second support member, wherein the valve core is fixed to the first support member with one end and fixed to the second support member with the other end. Thus, reliable fixing of the valve core can be achieved.

[0019] In one embodiment of the one-way valve, a through hole is formed in the bottom of the retaining member, and a first protrusion is formed on the side of the first support member facing the valve core, and the first protrusion passes through the through hole, so that the retaining member can be reliably fixed on the first support member in a simple manner.

[0020] In one embodiment of the one-way valve, a through hole is formed in the bottom of the retaining member, and a second protrusion is formed on the side of the second support member facing the valve core, and the second protrusion passes through the through hole, so that the retaining member can be reliably fixed on the second support member in a simple manner.

[0021] In one embodiment of the one-way valve, a rib-shaped protrusion is integrally formed on the inner wall of the through hole, and when the first support member is connected to the retaining member, the protrusion abuts against the first protrusion, and / or a step portion is formed on the first protrusion, and when the first support member is connected to the retaining member, the step portion abuts against the end face of the rib-shaped protrusion facing the first support member. In this way, reliable support of the retaining member on the first support member can be achieved.

[0022] In one embodiment of the one-way valve, a rib-shaped protrusion is integrally formed on the inner wall of the through hole, and the protrusion abuts against the second protrusion, thereby enabling reliable support of the retaining member on the second support member.

[0023] In one embodiment of the one-way valve, the first support member has a first circumferential wall and an annular bottom wall, the first protrusion is arranged at the center of the first circumferential wall and connected to the first circumferential wall and the annular bottom wall through a first spoke portion, and the first spoke portion protrudes from the annular bottom wall on the end surface of the annular bottom wall facing the retaining member. In this way, the first support member can reliably support the retaining member.

[0024] In one embodiment of the one-way valve, the second support member has a second circumferential wall, the second protrusion is arranged at the center of the second circumferential wall and connected to the second circumferential wall through a second spoke portion, and the second spoke portion protrudes from the second circumferential wall on the end surface of the second circumferential wall facing the retaining member. In this way, the second support member can reliably support the retaining member.

[0025] In one embodiment of the one-way valve, at least one limiting groove is formed on the bottom of the retaining member, and when the first support member is connected to the retaining member, the first spoke part is embedded in the limiting groove, thereby enabling the retaining member to be more reliably positioned relative to the first support member.

[0026] In one embodiment of the one-way valve, at least one limiting groove is formed on the bottom of the retaining member, and when the second support member is connected to the retaining member, the second spoke part is embedded in the limiting groove, thereby enabling the retaining member to be more reliably positioned relative to the second support member.

[0027] In one embodiment of the one-way valve, the limiting groove is formed in the following manner: a rib-shaped strip portion is formed in the radial direction on the bottom surface of the retaining member facing the first support member, and a partially disc-shaped protrusion is adjacent to the through hole at the radial inner end of the strip portion, and a limiting groove is defined between the corresponding two protrusions.

[0028] The limiting groove is formed in the following manner: a rib-shaped strip portion is formed in the radial direction on the bottom surface of the retaining component facing the second support member, and a partially disc-shaped protrusion is adjacent to the through hole at the radial inner end of the strip portion, and a limiting groove is defined between the corresponding two protrusions.

[0029] In one embodiment of the one-way valve, a seat protruding from the bottom surface of the retaining member is formed on the radially outer end of the rib-shaped strip portion, and the seat abuts against the first support member when the valve is installed, wherein the seat is configured to extend radially from the radial inner part to the radial outer part of the circumferential wall of the retaining member to bridge the circumferential wall of the retaining member, thereby achieving more effective cooperation between the first support member and the retaining member.

[0030] In one embodiment of the one-way valve, a seat protruding from the bottom surface of the retaining member is formed on the radially outer end of the rib-shaped strip portion, and the seat abuts against the second support member when the valve is installed, wherein the seat is configured to extend radially from the radial inner part to the radial outer part of the circumferential wall of the retaining member to bridge the circumferential wall of the retaining member, thereby achieving more effective cooperation between the second support member and the retaining member.

[0031] In one embodiment of the non-return valve, the retaining member is made of a rigid material and abuts against the back side of the valve element, thereby achieving a more effective support for the valve core.

[0032] In one embodiment of the one-way valve, the valve core is made of an elastomeric material, and / or a first valve core mounting portion configured as a first groove is provided at the end of the valve core opposite to the end provided with the valve element, and a second valve core mounting portion configured as a second groove is provided at the end of the valve core provided with the valve element; when the first support is connected to the retaining member, the first protrusion on the first support can be embedded in the second groove through the through hole of the retaining member, and the second protrusion on the second support can be embedded in the first groove; when the second support is connected to the retaining member, the second protrusion on the second support can be embedded in the second groove through the retaining member, and the first protrusion on the first support can be embedded in the first groove. Based on this, the valve core and the retaining element can be reliably and simply fixed.

[0033] In one embodiment of the one-way valve, the first groove and the second groove have the same shape and radial size, and the first protrusion and the second protrusion have the same shape and radial size, so that the flow direction to be restricted can be selected according to actual application conditions.

[0034] In one embodiment of the one-way valve, a first support member and a second support member divide the chamber into a first chamber, a second chamber and a third chamber, a first connecting portion is formed in the first support member, the first connecting portion is configured to allow the first chamber to be fluidically connected to the second chamber, and a second connecting portion is formed in the second support member, the second connecting portion is configured to allow the second chamber to be fluidically connected to the third chamber.

[0035] In one embodiment of the one-way valve, the first communication portion is configured to gradually widen toward the valve core, and / or the second communication portion is in the form of a through hole, so that the fluid flow rate can be increased or decreased as needed.

[0036] In one embodiment of the one-way valve, the second communication portion is in the form of a through hole.

[0037] In one embodiment of the one-way valve, the valve housing includes a first part and a second part, the diameter of the first part is larger than the diameter of the second part, an annular groove is provided in the end face of the first part facing the second part, a seal is embedded in the annular groove, and / or a thread is provided on the outer periphery of the second part.

[0038] According to an advantageous embodiment of the present invention, the retaining member is integrally formed, and / or the first support member is integrally formed, and / or the second support member is integrally formed, thereby achieving a more compact structure of the one-way valve that is more advantageous in manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] After reading the following detailed description in conjunction with the accompanying drawings, multiple aspects of the present invention will be better understood. In the accompanying drawings:

[0040] Figure 1 is a cross-sectional view of a one-way valve according to an embodiment of the utility model;

[0041] Figure 2 is based on Figure 1 A cross-sectional view of a valve core and a retaining member of a one-way valve of an embodiment of the present invention;

[0042] Figure 3 is a cross-sectional view of a one-way valve according to another embodiment of the utility model;

[0043] Figure 4 is based on Figure 3 A cross-sectional view of a valve core and a retaining member of a one-way valve of an embodiment of the present invention;

[0044] Figure 5 is a top perspective view of a retaining member of a one-way valve according to the utility model;

[0045] Figure 6 is a perspective view of a retaining member of a one-way valve according to the utility model as viewed from the bottom;

[0046] Figure 7 is a perspective view of the first support member according to the utility model on the side facing the valve core;

[0047] Figure 8 is a perspective view of the second support member according to the utility model on the side facing the valve core;

[0048] as well as Fig. 9 It is a perspective detail view of the retaining member according to the utility model in the installed state. DETAILED DESCRIPTION

[0049] The present invention will be described below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, it should be understood that the present invention can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the present invention more complete and fully explain the scope of protection of the present invention to those skilled in the art. It should also be understood that the embodiments of the present invention can be combined in various ways to provide more additional embodiments.

[0050] It should be understood that the same reference numerals represent the same elements throughout the drawings. In the drawings, the dimensions of certain features may be distorted for clarity.

[0051] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present invention. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of simplicity and / or clarity, well-known functions or structures may not be described in detail.

[0052] The singular forms "a", "said" and "the" used in the specification include plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items.

[0053] In the specification, spatial relational terms such as "upper", "lower", "left", "right", "front", "back", "higher", "lower", etc. may describe the relationship of one feature to another feature in the drawings. It should be understood that the spatial relational terms include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, when the device in the drawings is turned over, features previously described as being "below" other features may now be described as being "above" the other features. The device may also be oriented in other ways (rotated 90 degrees or in other orientations), and the relative spatial relationships will be interpreted accordingly.

[0054] The one-way valve 1 according to the present invention will be described in detail below with reference to the accompanying drawings. The one-way valve 1 is used in a fluid circuit or system to restrict the fluid passing through the one-way valve to flow in only one direction and prevent the fluid from flowing in the opposite direction.

[0055] like Figure 1 and Figure 3 As shown, a one-way valve 1 according to an embodiment of the present invention comprises a valve housing 200 and a valve core 300 . The valve housing is made of metal, for example, and the valve core 300 is disposed in the valve housing 200 .

[0056] The valve housing 200 is formed with a first port 211 and a second port 212, and a through chamber 210 is formed between the first port 211 and the second port 212. A fluid may flow in from the first port 211, flow through the chamber 210, and then flow out from the second port 212, or a fluid may flow in from the second port 212, flow through the chamber 210, and then flow out from the first port 211. In the illustrated embodiment, the first port 211 and the second port 212 are respectively disposed at both ends of the valve housing 200. It will be appreciated by those skilled in the art that the first port 211 and the second port 212 may be disposed at any appropriate position of the valve housing 200, for example, the first port 211 may be disposed on the side wall of the valve housing 200.

[0057] The valve core 300 is disposed in the chamber 210 to limit the flow direction of the fluid in the chamber 210 , for example, only allowing the fluid to flow from the first port 211 to the second port 212 or only allowing the fluid to flow from the second port 212 to the first port 211 , while the flow in the opposite direction is restricted.

[0058] In the illustrated embodiment, in order to facilitate the installation of the one-way valve 1 in the fluid system, the valve housing 200 of the one-way valve 1 is divided into two parts, a first part 221 and a second part 222. As shown in the figure, the outer diameter of the second part 222 is smaller than the outer diameter of the first part 221, and a thread is formed on the outer periphery of the second part 222, so that the one-way valve 1 can be installed in the fluid system through the thread on the second part 222. The first port 211 is provided on the first part 221, and the second port 212 is provided on the second part 222. Here, the free end of the first part 221 is defined as the upper end, and the free end of the second part 222 is defined as the lower end. The direction in which the fluid flows from the upper end to the lower end is defined as the A direction, and the direction in which the fluid flows from the lower end to the upper end is defined as the B direction.

[0059] When the one-way valve 1 is installed in a fluid system, in order to prevent leakage of the fluid in the fluid system, a sealing member 230 may be provided. An annular groove is provided in the end surface of the first part 221 facing the second part 222. The sealing member 230 may be embedded in the annular groove. The sealing member may be in the form of a sealing ring or any other suitable form. In one embodiment, when the outer diameter of the second part 222 is smaller than the outer diameter of the first part 221, a shoulder may be formed in the transition portion from the first part 221 to the second part 222, and an annular groove for accommodating the sealing member 230 may be formed on the shoulder, such as Figure 1 shown.

[0060] The following will be combined with reference Figure 1 and Figure 3 The valve core 300 and its related structure are described in more detail. The valve core 300 includes a valve core body 310 and a valve element 330 formed in one piece with the valve core body. The valve element 330 generally surrounds the valve core body 310 in a flange-like manner and extends outward from the valve core body 310.

[0061] In the illustrated embodiment, the valve core body 310 can be substantially cylindrical in shape and define a longitudinal direction, and the valve core body 310 includes a first end 311 and a second end 312 opposite to each other along the longitudinal direction. The valve core body 310 and the valve element 330 are made of a deformable material, such as rubber. It will be appreciated by those skilled in the art that the valve core body 310 can have any other suitable shape, such as a cuboid or other regular or irregular shapes.

[0062] The valve element 330 can extend from any suitable position of the valve core body 310. In one embodiment, the valve element 330 can extend outward from one end of the valve core body 310. For example, Figures 1 to 4 As shown, the valve element 330 can extend outward from the first end 311 of the valve core body, so that the valve core 300 is formed into an umbrella-like or mushroom-like shape. The valve element 330 can be elastically deformed relative to the valve core body 310. For example, under the action of a force (for example, when subjected to the impact of the fluid flowing through the one-way valve 1), the end of the valve element 330 away from the valve core body 310 can move toward the valve core body 310 through elastic deformation.

[0063] The valve element 330 may be made of an elastic material that can be elastically deformed under the action of force, so that the valve element can move relative to the valve core body 310 through the elastic deformation of the elastic material, thereby also enabling the valve element 330 to move relative to the valve core body 310.

[0064] The valve core 300 is installed in the chamber 210 of the valve housing 200. When installed in place, the valve element 330 of the valve core 300 abuts against the inner wall of the chamber 210. According to an embodiment of the utility model, the valve element 330 abuts against the inner wall of the chamber 210 at an angle (preferably a non-vertical angle) relative to the inner wall of the chamber 210.

[0065] According to the one-way valve 1 of the present invention, the one-way valve 1 defines an upward direction and a downward direction according to the fluid flow direction allowed by the one-way valve 1, that is, the fluid flow direction allowed by the one-way valve 1 is the upward direction. Figure 1 As shown by arrow B in FIG. The fluid flow direction can also be restricted to the downward direction, such as Figure 3 As shown by arrow A in FIG.

[0066] like Figure 1 As shown, the valve core 300 is installed in the chamber 210 of the valve housing 200, and the valve element 330 is inclined against the inner wall of the chamber 210. Specifically, the valve element 330 extends outward around the valve core body 310 and toward the upward direction B, that is, the valve element 330 extends outward obliquely along the direction away from the valve core body 310 and along the upward direction B, so that the valve element 330 extends obliquely or at an angle relative to the inner wall of the chamber 210, and when it finally abuts against the inner wall of the chamber 210, it abuts against the inner wall of the chamber 210 obliquely.

[0067] In the illustrated embodiment, when the valve element 330 includes a base 331 and an extension portion 332, the base 331 surrounds the valve core body 310, and the extension portion 332 extends outward from the base 331 and toward the upward direction B, that is, the extension portion 332 extends obliquely outward in a direction away from the base 331 and the valve core body 310 and simultaneously in the upward direction B, so that the extension portion 332 extends obliquely or at an angle relative to the inner wall of the chamber 210, and when it finally abuts against the inner wall of the chamber 210, it abuts against the inner wall of the chamber 210 obliquely.

[0068] Under normal conditions, for example, when no fluid flows through the one-way valve 1, the valve element 330 is elastically acted upon so that it is inclined against the inner wall of the chamber 210, and the inner wall generates a reaction force on the valve element 330, thereby biasing the valve element 330 toward a closed position (i.e., a position where the valve element 330 is against the inner wall of the chamber 210 to prevent the fluid from flowing through the chamber 210).

[0069] Figure 1 An embodiment of the utility model is used, wherein, when the fluid flows in the chamber 210 along the upward direction B, when the impact force of the fluid on the valve element 330 exceeds the opening threshold, the valve element 330 overcomes the elastic effect and moves or deforms relative to the valve core body 310 and the inner wall of the valve housing, for example, moves or deforms toward the valve core body 310 to at least partially leave the inner wall of the chamber 210. In this way, the fluid can flow through the gap between the valve element 330 and the inner wall of the chamber 210, thereby allowing the fluid to flow through the chamber 210 along the upward direction B and finally flow through the one-way valve 1.

[0070] exist Figure 3 , another embodiment of the utility model is shown, in which the fluid flows in the chamber 210 along the downward direction A. At this time, the inner wall of the chamber 210 prevents the valve element 330 from moving or deforming toward the upward direction B, so that the fluid cannot pass through the chamber 210, that is, the fluid cannot flow through the one-way valve 1 along the upward direction B.

[0071] Thus, the one-way valve 1 according to the utility model can be switched between a closed position and an open position during operation. In the closed position, the valve element 330 is inclined relative to the inner wall of the chamber 210 against the inner wall of the chamber 210 to prevent the fluid from flowing through the chamber 210, and in the open position, the valve element 330 at least partially leaves the inner wall of the chamber 210 to obtain a passage for the fluid to flow through the chamber 210.

[0072] exist Figure 1 In the illustrated embodiment, the valve core 300 may further include a retaining member 350, such as Figure 2 and Figure 4When the fluid flows in the downward direction A in the chamber 210, the inner wall of the chamber 210 prevents the valve element 330 from moving or deforming in the downward direction A. However, in the case where the impact of the fluid on the valve element 330 is too large, there is a certain possibility that the valve element 330 overcomes the blocking effect of the inner wall of the chamber 210 and moves or deforms in the downward direction A. Therefore, a retaining member 350 may be provided to inhibit the valve element 330 from moving or deforming in the downward direction A.

[0073] like Figure 1 As shown, the retaining member 350 can be arranged on the back side of the valve element 330 facing the lower end of the valve housing. In this way, when the fluid flows in the downward direction A in the chamber 210, if the valve element 330 is to move or deform in the downward direction A, it is necessary not only to overcome the blocking effect of the inner wall of the chamber 210 but also to overcome the resistance of the retaining member 350, thereby further ensuring that the valve element 330 will not move or deform in the downward direction A.

[0074] The retaining member 350 may be made of a rigid material, such as a metal material, a hard plastic, or any other suitable material.

[0075] like Figure 5 As shown, the retaining member 350 includes a bottom 351 configured as a disc and a continuous circumferential wall 352 surrounding the bottom, and the bottom and the circumferential wall are connected to each other by a plurality of ribs 353. The bottom 351, the ribs 353 and the circumferential wall 352 can be connected to each other by, for example, integral molding. A through hole 354 is configured on the bottom 351, and a protrusion 355 is molded on the inner wall of the through hole 354, the protrusion extending from one end of the through hole 354 to the other end of the through hole, and the protrusion is configured as a rib.

[0076] like Figure 1 As shown, the upward direction B is the direction from the second port 212 to the first port 211, and the downward direction A is the direction from the first port 211 to the second port 212. Figure 1 In the illustrated embodiment, the fluid is allowed to flow from the second port 212 to the first port 211, while the fluid is prevented from flowing from the first port 211 to the second port 212. However, the one-way valve 1 according to the present invention can very conveniently change the direction in which the fluid is allowed to flow. Figure 1 In the embodiment of the present invention, the valve core 300 is installed so that its valve element 330 extends outwardly in an upward direction B relative to the central axis of the valve housing.

[0077] When necessary, the valve core 300 can be installed upside down, that is, the valve element 330 is installed in the opposite direction to change the fluid flow direction. When the valve core 330 is installed upside down, the fluid is allowed to flow from the first port 211 to the second port 212, while the fluid is prevented from flowing from the second port 212 to the first port 211. Figure 3 Another embodiment of the one-way valve according to the present utility model is shown, wherein the installation direction of the valve core 300 is the same as that of the one-way valve 300. Figure 1 The illustrated embodiment, in contrast, allows fluid to flow from the first port 211 to the second port 212, but not from the second port 212 to the first port 211. Figure 1 and Figure 3 It can be clearly seen from the comparison that changing the direction in which the fluid is allowed to flow only requires changing the installation direction of the valve core 300 and the retaining member, and the remaining components do not need to be modified.

[0078] exist Figure 1 and Figure 3 In the illustrated embodiment, the manner in which the valve core 300 is installed in the chamber 210 is shown.

[0079] As shown in the figure, the one-way valve 1 according to the present invention may include a first support member 400 made of plastic and fixedly installed in the chamber 210 , and the valve core 300 is connected to the first support member 400 , thereby the valve core 300 can be installed in the chamber 210 .

[0080] In the illustrated embodiment, the first support member 400 is shown to be fixed in the chamber 210 by threaded connection, however, those skilled in the art will appreciate that any other suitable manner may be used to fix the first support member 400 in the chamber 210. In addition, in order to facilitate fixing the first support member 400 in the chamber 210, a first shoulder 261 may be formed on the inner wall of the chamber 210, and when the first support member 400 is fixed in the chamber 210, the first support member 400 may abut against the first shoulder 261.

[0081] A first support member mounting portion 410 is provided on the first support member 400 to facilitate connection with the valve core 300. A first valve core mounting portion 314 may be provided on the valve core 300 accordingly, and the first valve core mounting portion 314 may be provided on the valve core body 310, for example, at the first end 311 of the valve core body 310. By mounting the first valve core mounting portion 314 to the first support member mounting portion 410, the valve core 300 may be mounted on the first support member 400.

[0082] The valve core 300 may also be provided with a second valve core mounting portion 315, which may be provided on the valve core body 310, for example, at the second end 312 of the valve core body 310. The valve core 300 may be mounted on the second support member 500 by mounting the second valve core mounting portion 315 on the second support member mounting portion 510.

[0083] In fact, two mounting parts may be provided at both ends of the valve core 300, namely, the first valve core mounting part 314 and the second valve core mounting part 315, both of which may be mounted to the first support member mounting part 410 or the second support member mounting part. When the first valve core mounting part 314 is mounted to the first support member mounting part 410, for example Figure 1-2 In the case shown, the one-way valve 1 is configured to allow the fluid to flow from the second port 212 to the first port 211, while preventing the fluid from flowing from the first port 211 to the second port 212. When the second valve core mounting portion 315 is mounted to the first support member mounting portion 410, for example Figure 3-4 In the illustrated case, the one-way valve 1 is configured to allow fluid to flow from the first port 211 to the first port 212, and prevent fluid from flowing from the second port 212 to the first port 211. At this time, the change in the direction of fluid flow can be achieved by simply selecting a different mounting portion.

[0084] For ease of installation, the first valve core mounting portion 314 and the second valve core mounting portion 315 may have the same structure, for example, the same shape and radial size, so as to be easily coupled to the same first support member mounting portion 410 .

[0085] In order to form a fluid passage in the chamber 210, a first connecting portion 420 may be formed on the first support member 400, and the first connecting portion 420 is configured to allow the fluid to flow through the first support member 400. In one embodiment, the first connecting portion 420 may be in the form of a through hole, for example, a plurality of regularly or irregularly arranged through holes may be provided on the first support member 400. Further, the first connecting portion 420 may be designed to have a flow restriction structure, which is configured to control the flow of the fluid flowing through the first support member 400. For example, the flow of the fluid is controlled by limiting the number, arrangement, structure and size of the through holes. Or the flow restriction structure may be an additional structure other than the through hole, for example, the fluid may flow out of the through hole after flowing through the flow restriction structure. The first connecting portion may be configured to gradually widen toward the valve core.

[0086] Further, as shown in the figure, the one-way valve 1 according to the utility model may also include a second support member 500, which is fixedly installed in the chamber 210, and the first support member 400 and the second support member 500 divide the chamber 210 into a first chamber 251, a second chamber 252 and a third chamber 253. In one embodiment, the valve core 300 may be installed in the second chamber 252 between the first support member 400 and the second support member 500.

[0087] In order to facilitate fixing the second support member 500 in the chamber 210 , a second shoulder 262 may be formed on the inner wall of the chamber 210 . When the second support member 500 is fixed in the chamber 210 , the second support member 500 may abut against the second shoulder 262 .

[0088] A second support member mounting portion 510 is provided on the second support member 500 to facilitate connection and mounting with the valve core 300. The first valve core mounting portion 314 can be mounted to the second support member mounting portion 510, and the second valve core mounting portion 315 can also be mounted to the second support member mounting portion 510, thereby mounting the valve core 300 to the second support member 500.

[0089] It can be seen that the two mounting parts at both ends of the valve core 300, namely the first valve core mounting part 314 and the second valve core mounting part 315, can be mounted to the second support member mounting part 510. At this time, combined with the above description of the first support member 400, the valve core 300 can be mounted to the first support member 400 and the second support member 500 through the corresponding cooperation between the first valve core mounting part 314 and the second valve core mounting part 315 and the first support member mounting part 410 and the second support member mounting part 510.

[0090] exist Figure 1-2 In the illustrated embodiment, the first valve core mounting portion 314 is mounted to the first support member mounting portion 410, and the second valve core mounting portion 315 is mounted to the second support member mounting portion 510. At this time, the one-way valve 1 is configured to allow fluid to flow from the second port 212 to the first port 211, while preventing fluid from flowing from the first port 211 to the second port 212. Figure 3-4 In the illustrated embodiment, the second valve core mounting portion 315 is mounted to the first support member mounting portion 410, and the first valve core mounting portion 314 is mounted to the second support member mounting portion 510, and the one-way valve 1 is configured to allow fluid to flow from the first port 211 to the second port 212, while preventing fluid from flowing from the second port 212 to the first port 211. It can be seen that the change in the direction of fluid flow can be achieved by simply selecting different mounting portions.

[0091] For ease of installation, similar to the first valve core mounting portion 314 and the second valve core mounting portion 315, the first support member mounting portion 410 and the second support member mounting portion 510 may have the same structure, such as the same shape and size, so as to be easily connected to the same valve core mounting portion.

[0092] In order to form a fluid passage in the chamber 210, a second connecting portion 520 may be formed on the second support member 500, and the second connecting portion 520 is configured to allow the fluid to flow through the second support member 500. In one embodiment, the second connecting portion 520 may be in the form of a through hole, for example, a plurality of regularly or irregularly arranged through holes may be provided on the second support member 500. Further, the second connecting portion 520 may be designed to have a flow restriction structure, and the flow restriction structure is configured to control the flow of the fluid flowing through the second support member 500. For example, the flow of the fluid is controlled by limiting the number, arrangement, structure and size of the through holes. Or the flow restriction structure may be an additional structure other than the through hole, for example, the fluid may flow out of the through hole after flowing through the flow restriction structure.

[0093] As shown in the figure, the first support member mounting portion 410 and the second support member mounting portion 510 are shown in the form of a protrusion, and the first valve core mounting portion 314 and the second valve core mounting portion 315 are shown in the form of a groove, however, those skilled in the art will appreciate that any other suitable matching forms are feasible. For example, the first support member mounting portion 410 and the second support member mounting portion 510 can be in the form of a groove, and the first valve core mounting portion 314 and the second valve core mounting portion 315 can be in the form of a protrusion accordingly. In addition to the protrusion and the groove, bolts, screws, snap fits or any other suitable means known in the art may also be used.

[0094] In order to realize the installation of the retaining member 350 in the valve housing 200, Figure 1 In the illustrated embodiment, a second protrusion as a second support member mounting portion 510 is formed on the second support member 500, and the second protrusion passes through the through hole 354 in the retaining member 350. A rib-shaped protrusion 355 is integrally formed on the inner wall of the through hole 354, and the protrusion abuts against the second protrusion.

[0095] like Figure 6 and Figure 8 As shown, the second support member 500 has a second circumferential wall 361, the second protrusion is arranged at the center of the second circumferential wall 361 and is connected to the second circumferential wall 361 through a second spoke portion 362, and the second spoke portion 362 protrudes from the second circumferential wall 361 on the end surface of the second circumferential wall facing the retaining member 350. Figure 8 Three second spoke portions 362 are shown.

[0096] like Figure 6 As shown, at least one limiting groove 360 ​​is formed on the bottom of the holding member 350. The limiting groove 360 ​​is formed in the following manner: a rib-shaped strip portion 356 is formed in the radial direction from the circumference of the through hole 354 on the bottom surface of the holding member 350 facing the second support member 500, and a partially disc-shaped protrusion 357 is formed adjacent to the through hole 354 at the radial inner end of the strip portion, and a limiting groove is defined between the two protrusions. The second spoke portion 362 of the second support member is respectively embedded in the limiting groove 360. A support 358 protruding from the bottom surface is formed on the radial outer end of the rib-shaped strip portion 356, and the support 358 abuts against the second support member 500 in the installed state, wherein the support 358 is configured to extend radially from the radial inner side of the circumferential wall of the holding member 350 to the radial outer side to bridge the circumferential wall of the holding member 350.

[0097] Figure 3 In the illustrated embodiment, a first protrusion serving as a first support member mounting portion 410 is formed on the first support member 400, and the first protrusion passes through a through hole 354 in the retaining member 350. A rib-shaped protrusion 355 is integrally formed on the inner wall of the through hole 354, and the protrusion abuts against the first protrusion. Figure 7 The first support member 400 shown has a first circumferential wall 401 and an annular bottom wall 403, a first protrusion 410 is arranged at the center of the circumferential wall 401 and connected to the first circumferential wall 401 through a first spoke portion 402, and the first spoke portion 402 protrudes from the annular bottom wall 403 on the end surface of the annular bottom wall facing the retaining member 350. The first spoke portions are respectively embedded in the limiting grooves 360. In addition, at least one first connecting portion 420 configured as a through hole is defined by the annular bottom wall and the first spoke portion, and the first connecting portion expands conically toward the retaining member 350. The limiting groove 360 ​​is formed in the following manner: a rib-shaped strip portion 356 is formed in the radial direction from the circumference of the through hole 354 on the bottom surface of the retaining member 350 facing the first support member 400, and a partially disc-shaped protrusion 357 is adjacent to the through hole 354 at the radial inner end of the strip portion, and a limiting groove is defined between the two protrusions. A support 358 protruding from the bottom surface is molded on the radially outer end of the rib-shaped strip portion 356, and the support 358 abuts against the first support member 400 in the installed state, wherein the support 358 is configured to extend radially from the radial inner side of the circumferential wall of the retaining member 350 to the radial outer side to bridge the circumferential wall of the retaining member 350.

[0098] Although exemplary embodiments of the present invention have been described, it should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, all changes and modifications are included in the scope of protection of the present invention as defined by the claims. The present invention is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. A one-way valve, characterized in that: The one-way valve comprises: a valve housing having a chamber formed therein; and a valve core, the valve core being disposed in the chamber, the valve core having a valve core body and a valve element surrounding the valve core body and extending from the valve core body, The one-way valve is switched between a closed position and an open position by movement of the valve element relative to the valve core body, wherein in the closed position, the valve element abuts against the inner wall of the chamber, and in the open position, the valve element at least partially leaves the inner wall of the chamber. The non-return valve further comprises a retaining member for retaining the valve element, which is arranged upstream of the valve element in the fluid flow direction, and comprises a bottom and an annular continuous circumferential wall, wherein the bottom and the circumferential wall are connected to each other by ribs.

2. The one-way valve according to claim 1, characterized in that: The valve element abuts against the inner wall of the chamber at an inclination relative to the inner wall of the chamber.

3. The one-way valve according to claim 1, characterized in that: The retaining member is bowl-shaped and / or pot-shaped.

4. The one-way valve according to claim 1, characterized in that: The ribs are evenly distributed between the bottom and the circumferential wall.

5. The one-way valve according to claim 1, characterized in that: The one-way valve also includes a first support member fixed in the chamber, the valve core is fitted to and supported by the first support member, the first support member is fixed in the chamber by a threaded connection, and a first shoulder for the first support member is formed on the inner wall of the chamber, and one end of the first support member rests on the first shoulder.

6. The one-way valve according to claim 5, characterized in that: The one-way valve also includes a second support member fixed in the chamber, a second shoulder is formed on the inner wall of the chamber, the second support member abuts against the second shoulder with one end facing away from the valve core, and the valve core is arranged between the first support member and the second support member, wherein the valve core is fixed to the first support member with one end and fixed to the second support member with the other end.

7. The one-way valve according to claim 6, characterized in that: A through hole is formed in the bottom of the retaining member, and a first protrusion is formed on a side of the first support piece facing the valve core, the first protrusion passing through the through hole.

8. The one-way valve according to claim 6, characterized in that: A through hole is formed in the bottom of the retaining member, and a second protrusion is formed on a side of the second support piece facing the valve core, the second protrusion passing through the through hole.

9. The one-way valve according to claim 7, characterized in that: A rib-shaped protrusion is integrally formed on the inner wall of the through hole, and when the first support member is connected to the retaining component, the protrusion abuts against the first protrusion, and / or a step portion is formed on the first protrusion, and when the first support member is connected to the retaining component, the step portion abuts against the end face of the rib-shaped protrusion facing the first support member.

10. The one-way valve according to claim 8, characterized in that: A rib-shaped protrusion is integrally formed on the inner wall of the through hole, and the protrusion abuts against the second protruding portion.

11. The one-way valve according to claim 7, characterized in that: The first support member has a first circumferential wall and an annular bottom wall, the first protrusion is arranged at the center of the first circumferential wall and is connected to the first circumferential wall and the annular bottom wall through a first spoke portion, and the first spoke portion protrudes from the annular bottom wall on the end surface of the annular bottom wall facing the retaining member.

12. The one-way valve according to claim 8, characterized in that: The second support member has a second circumferential wall, the second protrusion is arranged at the center of the second circumferential wall and is connected to the second circumferential wall via a second spoke portion that protrudes from the second circumferential wall on the end surface of the second circumferential wall facing the retaining member.

13. The one-way valve according to claim 11, characterized in that: At least one limiting groove is formed on the bottom of the retaining component. When the first support member is connected to the retaining component, the first spoke portion is embedded in the limiting groove.

14. The one-way valve according to claim 12, characterized in that: At least one limiting groove is formed on the bottom of the retaining component. When the second support member is connected to the retaining component, the second spoke portion is embedded in the limiting groove.

15. The one-way valve according to claim 13, characterized in that: The limiting groove is formed in the following manner: a rib-shaped strip portion is formed in the radial direction on the bottom surface of the retaining component facing the first support member, and a partially disc-shaped protrusion is adjacent to the through hole at the radial inner end of the strip portion, and a limiting groove is defined between the corresponding two protrusions.

16. The one-way valve according to claim 14, characterized in that: The limiting groove is formed in the following manner: a rib-shaped strip portion is formed in the radial direction on the bottom surface of the retaining component facing the second support member, and a partially disc-shaped protrusion is adjacent to the through hole at the radial inner end of the strip portion, and a limiting groove is defined between the corresponding two protrusions.

17. The one-way valve according to claim 15, characterized in that: A seat is formed on the radially outer end of the rib-shaped strip portion and protrudes from the bottom surface of the retaining member, and the seat abuts against the first support member when the valve is installed, wherein the seat is configured to extend radially from the radial inner part to the radial outer part of the circumferential wall of the retaining member and bridge the circumferential wall of the retaining member.

18. The one-way valve according to claim 16, characterized in that: A seat is formed on the radially outer end of the rib-shaped strip portion and protrudes from the bottom surface of the retaining member, and the seat abuts against the second support member when the valve is installed, wherein the seat is configured to extend radially from the radial inner part to the radial outer part of the circumferential wall of the retaining member and bridge the circumferential wall of the retaining member.

19. The one-way valve according to claim 1, characterized in that: The retaining component is made of a rigid material and bears against the rear side of the valve element.

20. The one-way valve according to claim 6, characterized in that The valve core is made of an elastomeric material, and / or a first valve core mounting portion configured as a first groove is provided at the end of the valve core opposite to the end provided with the valve element, and a second valve core mounting portion configured as a second groove is provided at the end of the valve core provided with the valve element; when the first support member is connected to the retaining component, the first protrusion on the first support member can pass through the through hole of the retaining component and be embedded in the second groove, and the second protrusion on the second support member can be embedded in the first groove; when the second support member is connected to the retaining component, the second protrusion on the second support member can pass through the retaining component and be embedded in the second groove, and the first protrusion on the first support member can be embedded in the first groove.

21. The one-way valve according to claim 20, characterized in that The first groove and the second groove have the same shape and radial size, and the first protrusion and the second protrusion have the same shape and radial size.

22. The one-way valve according to claim 6, characterized in that: The first support member and the second support member divide the chamber into a first chamber, a second chamber and a third chamber, a first connecting portion is formed in the first support member, the first connecting portion is configured to connect the first chamber with the second chamber fluid, and a second connecting portion is formed in the second support member, the second connecting portion is configured to connect the second chamber with the third chamber fluid.

23. The one-way valve according to claim 22, characterized in that The first communication portion is configured to gradually widen toward the valve core, and / or the second communication portion is in the form of a through hole.

24. The one-way valve according to claim 1, characterized in that The valve housing comprises a first part and a second part, wherein the diameter of the first part is larger than that of the second part, an annular groove is provided in the end surface of the first part facing the second part, a seal is engaged in the annular groove, and / or a thread is provided on the outer circumference of the second part.

25. The one-way valve according to claim 6, characterized in that The retaining member is integrally formed, and / or the first supporting member is integrally formed, and / or the second supporting member is integrally formed.

26. The one-way valve according to claim 1, characterized in that The valve core is umbrella-shaped.

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