CN217301743U - One-way valve - Google Patents

Abstract

The utility model provides a check valve, include: the valve body is provided with an accommodating cavity, the valve body is provided with a first end and a second end which are oppositely arranged, the first end of the valve body is provided with a circulation port, the second end of the valve body is provided with a valve port, and the circulation port and the valve port are both communicated with the accommodating cavity; the piston is movably arranged in the accommodating cavity and used for plugging or opening the valve port; the guide piece is arranged in the accommodating cavity and provided with a stopping part and a guide part which are integrally formed, the stopping part is positioned on the periphery of the guide part and used for fixing the guide piece in the accommodating cavity, and the guide part can guide the piston; the spring is provided with a first end and a second end which are oppositely arranged, the first end of the spring is abutted with the guide piece, and the second end of the spring is abutted with the piston. By adopting the technical scheme, the problem that the integral assembly difficulty of the one-way valve in the prior art is high is solved.

Description

One-way valve

Technical Field

The utility model relates to a control valve technical field particularly, relates to a check valve.

Background

At present, a check valve comprises a valve body, a containing cavity and a valve port which are communicated with each other are arranged on the valve body, a fixing piece, a guide piece and a piston are arranged in the containing cavity, the piston is used for plugging or opening the valve port, a guide hole is formed in the piston, the fixing piece is fixed in the valve body, the guide piece is fixed on the fixing piece, one end of the guide piece is arranged in the guide hole, and the guide piece is matched with the guide hole to guide the piston. By adopting the structure, the common guide piece is fixed on the fixing piece in riveting or welding modes and the like, so that the position error of the guide piece relative to the fixing piece is large, the coaxiality of the piston and the valve port is poor, and the integral assembly difficulty of the check valve is increased. And after riveting between guide and the mounting, the fracture risk appears easily in the check valve operation in-process.

SUMMERY OF THE UTILITY MODEL

The utility model provides a check valve to solve the great problem of the whole equipment degree of difficulty of the check valve among the prior art.

The utility model provides a check valve, include: the valve comprises a valve body, a valve body and a valve seat, wherein the valve body is provided with a containing cavity, the valve body is provided with a first end and a second end which are oppositely arranged, the first end of the valve body is provided with a circulation port, the second end of the valve body is provided with a valve port, and the circulation port and the valve port are both communicated with the containing cavity; the piston is movably arranged in the accommodating cavity and used for plugging or opening the valve port; the guide piece is arranged in the accommodating cavity and provided with a stopping part and a guiding part which are integrally formed, the stopping part is positioned on the periphery of the guiding part and used for fixing the guide piece in the accommodating cavity, and the guiding part can guide the piston; the spring is provided with a first end and a second end which are oppositely arranged, the first end of the spring is abutted with the guide piece, and the second end of the spring is abutted with the piston.

Further, the guide part includes body and a plurality of direction claw, and the direction claw forms the guide part, and the body is located circulation mouth department, and a plurality of direction claw annular interval set up on the body, and the one end and the body coupling of direction claw, the other end of direction claw extend towards the valve port, and a plurality of direction claws cooperate jointly in order to the piston direction.

Further, the periphery annular interval of body is provided with a plurality of stationary dogs, and the stationary dog forms the backstop portion, and a plurality of stationary dogs extend along the radial direction of body.

Further, be provided with the circulation structure on the guide, the circulation structure communicates with circulation mouth and holding chamber respectively, and the clearance between a plurality of stationary dogs forms the circulation structure.

Furthermore, a plurality of guide claws surround the periphery of the piston, and the shape of the inner side walls of the guide claws is matched with the shape of the outer side walls of the piston.

Furthermore, the piston includes relative first end and the second end that sets up, and the first end of piston is close to the valve port setting, is provided with the guiding hole on the terminal surface of the second end of piston, and the one end of spring is worn to establish in the guiding hole, and the second end of spring and the pore wall looks butt of keeping away from the circulation mouth of guiding hole.

Further, the valve body includes: the valve comprises a valve shell and a valve seat, wherein the valve shell is provided with an accommodating cavity and a valve port, the valve port is positioned at one end of the valve shell, and the other end of the valve shell is provided with an opening which is communicated with the accommodating cavity; the valve cover is arranged at the opening and provided with a circulating port, and the circulating port is arranged on the valve cover.

Further, the guide is fixed between the valve cover and the valve housing.

Further, hold the chamber including first hole section and the second hole section that is connected, first hole section is close to the opening setting of circulating, the diameter of first hole section is greater than the diameter of second hole section, the valve casing forms the step face in first hole section and second hole section intercommunication department, the guide is located first hole section, one side of guide and the step face looks butt of valve casing, the opposite side and the valve looks butt of guide, the valve gap is sealed with the inner wall of first hole section and with valve casing fixed connection.

Furthermore, the valve port is connected with a first connecting pipe, and the circulation port is connected with a second connecting pipe.

Use the technical scheme of the utility model, the piston setting is holding the intracavity, and piston shutoff or open the valve port, and the guide has integrated into one piece's backstop portion and guide part, and the backstop portion of guide fixes the guide and holds the intracavity, and the guide part leads the piston, the first end and the guide looks butt of spring, the second end and the piston looks butt of spring. Adopt above-mentioned technical scheme, the backstop portion and the guide part integrated into one piece setting of guide, backstop portion fixes the guide at holding the intracavity, and the guide part leads the piston, has made things convenient for the installation of guide like this to the assembly of check valve has been made things convenient for. And the position error between the guide part and the valve body can be smaller, so that the guide part can better guide the piston, the structure stability of the guide part of the guide piece relative to the valve body can be better, and the matching precision of the guide part and the piston is improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a check valve provided according to an embodiment of the present invention;

figure 2 illustrates a cross-sectional view of a one-way valve provided in accordance with an embodiment of the present invention;

fig. 3 shows a schematic structural diagram of a guide provided according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a valve body; 11. a first end of the valve body; 111. a flow port; 12. a second end of the valve body; 121. a valve port; 13. an accommodating chamber; 131. a first bore section; 132. a second bore section; 14. a valve housing; 141. an opening; 15. a valve cover; 20. a piston; 21. a first end of the piston; 22. a second end of the piston; 221. a guide hole; 30. a guide member; 31. a stopper portion; 32. a guide portion; 33. a body; 34. a flow-through structure; 40. a spring; 41. a first end of a spring; 42. a second end of the spring; 50. a first connecting pipe; 60. a second connecting pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides a check valve including a valve body 10, a piston 20, a guide 30, and a spring 40. The valve body 10 is provided with a containing cavity 13, the valve body 10 is provided with a first end and a second end which are oppositely arranged, the first end 11 of the valve body is provided with a circulation port 111, the second end 12 of the valve body is provided with a valve port 121, and the circulation port 111 and the valve port 121 are both communicated with the containing cavity 13; a piston 20 is movably arranged in the accommodating cavity 13, and the piston 20 is used for sealing or opening the valve port 121; the guide 30 is arranged in the accommodating cavity 13, the guide 30 is provided with a stopping part 31 and a guide part 32 which are integrally formed, the stopping part 31 is positioned at the periphery of the guide part 32, the stopping part 31 is used for fixing the guide 30 in the accommodating cavity 13, and the guide part 32 can guide the piston 20; the spring 40 has a first end 41 abutting the guide 30 and a second end 42 abutting the piston 20, which are arranged opposite each other. The spring 40 is in a compressed state, so that the spring 40 presses the piston 20 to close the valve port 121; when fluid flows from the valve port 121 into the accommodating chamber 13, the fluid can impact the piston 20, so that the piston 20 opens the valve port 121. The first end 41 of the spring abuts against the guide 30 and the second end 42 of the spring abuts against the piston 20, so that the guide 32 can guide the spring 40, and the spring 40 can well press the piston 20 to close the valve port 121.

Use the technical scheme of the utility model, piston 20 sets up in holding chamber 13, and piston 20 shutoff or open valve port 121, and guide 30 has integrated into one piece's backstop portion 31 and guide part 32, and guide 30's backstop portion 31 fixes guide 30 in holding chamber 13, and guide part 32 leads piston 20, the first end 41 and the guide 30 looks butt of spring, the second end 42 and the piston 20 looks butt of spring. Adopt above-mentioned technical scheme, backstop 31 and the guide part 32 integrated into one piece setting of guide 30, backstop 31 is fixed guide 30 in holding chamber 13, and guide part 32 leads piston 20, has made things convenient for the installation of guide 30 like this to the assembly of check valve has been made things convenient for. The position error between the guide portion 32 and the valve body 10 can be made smaller, and the guide portion 32 can further guide the piston 20 better, so that the structural stability of the guide portion 32 of the guide 30 relative to the valve body 10 can be made better, and the matching accuracy of the guide portion 32 and the piston 20 is improved.

In the present embodiment, the guide member 30 includes a body 33 forming the guide portion 32, the body 33 being located at the communication port 111, and a plurality of guide claws annularly provided at intervals on the body 33, one ends of the guide claws being connected to the body 33, and the other ends of the guide claws extending toward the valve port 121, the plurality of guide claws cooperating together to guide the piston 20. Alternatively, the guide pawl may be slidably coupled to an outer sidewall of the piston 20 and may also be slidably coupled to an interior of the piston 20. The plurality of guide claws cooperate so that the forces between the guide claws and the piston 20 can be better balanced and the piston 20 can be better guided.

Specifically, the outer periphery of the body 33 is provided at annular intervals with a plurality of fixing claws, which form the stopper portions 31, extending in the radial direction of the body 33. Have a guide claw between two adjacent stationary dogs, can make guide claw and stationary dog along annular evenly distributed like this to can make the effort balance between guide claw and the piston 20, can also make the effort balance between stationary dog and the valve body 10, and then can prevent that body 33 from shifting relatively valve body 10, improve the structural stability of guide 30. The fixing claws extend in the radial direction of the body 33, so that the fixing claws can be fixed to the inner wall of the accommodating chamber by welding or the like. The guide 30 may be formed by machining a sheet, specifically, the guide 30 may be formed by cutting a fixing claw and a guide claw inward from an outer peripheral edge of the sheet in a radial direction thereof, bending the guide claw to one side of the sheet, and stamping. The guide member 30 is simple to machine and contributes to cost saving.

Specifically, the guide member 30 is provided with a flow structure 34, the flow structure 34 communicates with the flow port 111 and the accommodating chamber 13, respectively, and the gaps between the plurality of fixing claws form the flow structure 34. The flow-through structure 34 is used to connect the flow-through opening 111 and the receiving chamber 13. The gaps among the plurality of fixed claws form a circulation structure 34, so that the structure is simple, and the processing is convenient. The guide member 30 is integrally designed such that the gap between the guide portion 32 and the inner wall of the check valve accommodating chamber 13 is large, and thus the flow area of the flow structure 34 is large, increasing the flow amount and flow capacity of the check valve.

In the present embodiment, a plurality of guide claws are arranged around the outer periphery of the piston 20, and the shape of the inner side walls of the guide claws is matched with the shape of the outer side walls of the piston 20. The guide claws surround the periphery of the piston 20, so that the piston 20 can be better guided, and chips generated by mutual friction between the guide claws and the piston 20 cannot be gathered inside the piston 20, so that chip accommodating grooves do not need to be machined inside the piston 20, and the machining difficulty and the machining cost of the piston 20 are reduced. The shape of the inner side wall of the guide claw is matched with the shape of the outer side wall of the piston 20, so that the contact area of the guide claw and the piston 20 can be larger, the pressure between the guide claw and the piston 20 can be smaller, the abrasion degree of the piston 20 and the guide piece 30 can be smaller, and the service life of the guide piece 30 and the piston 20 is prolonged. The guide portion 32 is disposed outside the piston 20 and inside the piston 20, so that a step of forming a gas discharge hole in the piston 20 for discharging gas inside the piston 20 can be avoided, thereby saving the manufacturing cost.

Specifically, the piston 20 includes a first end and a second end disposed opposite to each other, the first end 21 of the piston is disposed near the valve port 121, a guide hole 221 is disposed on an end surface of the second end 22 of the piston, one end of the spring 40 is disposed in the guide hole 221, and the second end 42 of the spring abuts against a hole wall of the guide hole 221 away from the communication port 111. The end surface of the second end 22 of the piston is provided with a guide hole 221, and the spring 40 can be guided by the guide hole 221, so that the spring 40 can be prevented from being inclined, and the spring 40 can better drive the piston 20 to block the valve port 121.

Specifically, the valve body 10 includes a valve housing 14 and a valve cover 15. The valve housing 14 has a receiving cavity 13 and a valve port 121, the valve port 121 is located at one end of the valve housing 14, the other end of the valve housing 14 has an opening 141, and the opening 141 is communicated with the receiving cavity 13; the valve cap 15 is provided at the opening 141, the valve cap 15 has a communication port 111, and the valve cap 15 is provided with the communication port 111. The valve housing 14 and the valve cover 15 are fitted so that the piston 20, the guide 30, the spring 40, etc. are fitted into the receiving chamber 13 from the opening 141, facilitating the assembly of the check valve.

Specifically, the guide 30 is fixed between the valve cover 15 and the valve housing 14. With this arrangement, the structural stability of the guide 30 can be improved, and the guide 30 is prevented from being displaced. And the guide member 30 is fixed between the valve cover 15 and the valve housing 14, the guide member 30 is conveniently fixed in the accommodating chamber 13, and the position of the guide member 30 in the accommodating chamber 13 can be quickly positioned.

In this embodiment, the receiving chamber 13 includes a first hole section 131 and a second hole section 132 connected, the first hole section 131 is disposed near the communication port 111, the diameter of the first hole section 131 is larger than that of the second hole section 132, and the valve housing 14 forms a step surface where the first hole section 131 and the second hole section 132 communicate. The guide member 30 is located in the first hole section 131, a step surface on one side of the guide member 30 is abutted, one end of the valve cover 15 is arranged in the first hole section 131 and abutted against the other side of the guide member 30, and the valve cover 15 is sealed with the inner wall of the first hole section 131 and fixedly connected with the valve housing 14. With the above structure, the guide member 30 can be clamped between the valve cover 15 and the valve housing 14, thereby facilitating the positioning of the guide member 30; in addition, the contact area between the valve cover 15 and the inner wall of the first hole section 131 is large, which facilitates the sealing between the valve cover 15 and the first hole section 131. Alternatively, the valve cover 15 and the inner wall of the first hole section 131 may be sealed and fixedly connected by welding, or may be sealed by other sealing materials. Alternatively, the bonnet 15 and the valve body 10 may be fixedly connected by bolts, riveting or welding. In other embodiments, the guide 30 may be disposed between an end surface of the valve cover 15 and an end surface of the valve housing 14, with a sealed and fixed connection between the end surface of the valve cover 15 and the end surface of the valve housing 14.

Specifically, the first connection pipe 50 is connected to the valve port 121, and the second connection pipe 60 is connected to the circulation port 111. The first and second connection pipes 50 and 60 are used to connect with other structures to realize the connection of the check valve with other structures.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A one-way valve, comprising:

a valve body (10), the valve body (10) having a receiving cavity (13), the valve body (10) having a first end and a second end which are oppositely arranged, the first end (11) of the valve body having a communication port (111), the second end (12) of the valve body having a valve port (121), the communication port (111) and the valve port (121) both communicating with the receiving cavity (13);

a piston (20) movably arranged in the accommodating cavity (13), wherein the piston (20) is used for sealing or opening the valve port (121);

a guide member (30) arranged in the accommodating cavity (13), wherein the guide member (30) is provided with a stopping part (31) and a guide part (32) which are integrally formed, the stopping part (31) is positioned at the periphery of the guide part (32), the stopping part (31) is used for fixing the guide member (30) in the accommodating cavity (13), and the guide part (32) can guide the piston (20);

a spring (40), the spring (40) having a first end and a second end disposed opposite each other, the first end (41) of the spring abutting the guide (30) and the second end (42) of the spring abutting the piston (20).

2. The non-return valve according to claim 1, characterized in that the guide member (30) comprises a body (33) and a plurality of guide claws forming the guide portion (32), the body (33) being located at the communication port (111), the plurality of guide claws being arranged on the body (33) at annular intervals, one end of the guide claws being connected to the body (33), the other end of the guide claws extending toward the valve port (121), the plurality of guide claws cooperating together to guide the piston (20).

3. A non-return valve according to claim 2, characterised in that the outer circumference of the body (33) is provided at annular intervals with a plurality of fixing claws, which form the stop (31), extending in the radial direction of the body (33).

4. A non-return valve according to claim 3, characterised in that the guide (30) is provided with a flow-through structure (34), the flow-through structure (34) communicating with the flow-through opening (111) and the receiving chamber (13), respectively, the gaps between the plurality of fixing claws forming the flow-through structure (34).

5. The non-return valve according to claim 2, characterized in that a plurality of guide claws are arranged around the periphery of the piston (20), the shape of the inner side wall of the guide claws matching the shape of the outer side wall of the piston (20).

6. The check valve of claim 1, wherein the piston (20) comprises a first end and a second end which are oppositely arranged, the first end (21) of the piston is arranged close to the valve port (121), a guide hole (221) is arranged on the end surface of the second end (22) of the piston, one end of the spring (40) is arranged in the guide hole (221), and the second end (42) of the spring abuts against the wall of the guide hole (221) which is far away from the flow port (111).

7. The non-return valve according to claim 1, characterized in that the valve body (10) comprises:

a valve housing (14) having the accommodation chamber (13) and the valve port (121), the valve port (121) being located at one end of the valve housing (14), the other end of the valve housing (14) having an opening (141), the opening (141) being in communication with the accommodation chamber (13);

a valve cover (15), the valve cover (15) being disposed at the opening (141), the valve cover (15) having the circulation port (111), the valve cover (15) being provided with the circulation port (111).

8. A one-way valve according to claim 7, wherein the guide (30) is secured between the valve cover (15) and the valve housing (14).

9. The one-way valve according to claim 8, wherein the receiving chamber (13) comprises a first hole section (131) and a second hole section (132) connected, the first hole section (131) is disposed near the communication port (111), the diameter of the first hole section (131) is larger than the diameter of the second hole section (132), the valve housing (14) forms a step surface where the first hole section (131) and the second hole section (132) communicate, the guide (30) is located in the first hole section (131), one side of the guide (30) abuts against the step surface of the valve housing (14), the other side of the guide (30) abuts against the valve cover (15), and the valve cover (15) is sealed with the inner wall of the first hole section (131) and fixedly connected to the valve housing (14).

10. The check valve according to claim 1, wherein a first connection pipe (50) is connected to the valve port (121), and a second connection pipe (60) is connected to the communication port (111).

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