Shuttle valve

Abstract

The utility model belongs to the technical field of valves, and discloses a shuttle valve which comprises a valve element, a valve sleeve and a valve seat, the valve element is contained in the valve sleeve, the valve sleeve is provided with a first connecting part, and an annular press-in groove is formed in the peripheral wall of the first connecting part; the valve seat is provided with a second connecting part, and a mounting hole for accommodating the first connecting part is formed in the second connecting part; in the state that the valve sleeve and the valve seat are assembled, the peripheral wall of the first connecting part is attached to the inner wall of the mounting hole, part of the second connecting part is clamped into the press-in groove, and part of the peripheral wall of the second connecting part is attached to part of the inner wall of the press-in groove. Compared with the scheme that the valve seat and the valve sleeve are connected through threads, the first connecting part is pressed into the mounting hole of the second connecting part, and the second connecting part is partially clamped into the press-in groove, so that the connecting strength between the valve sleeve and the valve seat can be improved, the sealing performance of the connecting part between the valve sleeve and the valve seat can be improved, and the liquid leakage risk is reduced.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a shuttle valve. Background Art

[0002] The shuttle valve is a straight-stroke valve with a valve body and an actuator combined into one. Its advantages are small size and easy installation. In addition, the special internal piston structure makes the medium pressure have almost no more resistance interference on the piston, thus achieving fast switching.

[0003] In the related art, a shuttle valve generally includes a valve seat and a valve sleeve, wherein the outer contour of the valve seat has an external thread, and the valve seat has a threaded hole section threadedly connected to the external thread to achieve a detachable fixed connection between the valve seat and the valve sleeve by means of threads.

[0004] However, threaded connections have the following disadvantages: 1) Threaded connections are prone to loosening under external forces, resulting in insufficient connection strength between the valve seat and the valve sleeve; 2) The sealing performance of the threaded connection cannot well meet the sealing requirements of the connection between the valve seat and the valve sleeve, and there is a risk of leakage.

[0005] This section provides background information related to the present application which is not necessarily prior art. Utility Model Content

[0006] The present application aims to solve or at least alleviate part or all of the above problems. To this end, the present application aims to provide a shuttle valve having a high connection strength between the valve seat and the valve sleeve, good sealing performance, and low leakage risk.

[0007] In order to achieve the above objectives, this application adopts the following technical solutions:

[0008] The present application provides a shuttle valve, comprising:

[0009] The valve sleeve has a first connecting portion, wherein an outer peripheral wall of the first connecting portion is provided with an annular press-in groove;

[0010] The valve seat has a second connecting portion, wherein the second connecting portion has a mounting hole for accommodating the first connecting portion, and the second connecting portion is bent and deformed toward the mounting hole during the assembly of the valve seat and the valve sleeve and is inserted into the press-in groove;

[0011] When the valve sleeve and the valve seat are assembled, the outer peripheral wall of the first connecting part fits against the inner wall of the mounting hole, part of the second connecting part is inserted into the press-in groove, and part of the outer peripheral wall of the second connecting part fits against part of the inner wall of the press-in groove.

[0012] As an optional solution for the shuttle valve, the press-in groove has a first side wall, a bottom wall and a second side wall connected in sequence, and the angles between the first side wall and the second side wall and the axis of the first connecting portion are all less than 90°.

[0013] As an optional solution of the shuttle valve, the angle between the first side wall and the axis of the first connecting portion is smaller than the angle between the second side wall and the axis of the first connecting portion.

[0014] As an optional solution of the shuttle valve, the first side wall and the bottom wall have an arc transition; and / or

[0015] There is an arc transition between the second side wall and the bottom wall.

[0016] As an optional solution for the shuttle valve, the mounting hole has a limiting step surface, and when the valve sleeve and the valve seat are assembled, the end surface of the first connecting portion fits into the limiting step surface.

[0017] As an optional solution for the shuttle valve, when the valve sleeve and the valve seat are not fully assembled, the inner wall of the mounting hole has a ring-shaped groove, and the minimum distance between the groove and the limiting step surface is not less than the minimum distance between the first side wall and the end face of the first connecting portion.

[0018] As an optional solution of the shuttle valve, the groove has a first groove wall and a second groove wall connected to the first groove wall at an obtuse angle.

[0019] As an optional solution for the shuttle valve, when the valve sleeve and the valve seat are not fully assembled, the outer peripheral wall of the second connecting part adjacent to its end has a guide surface arranged in a ring shape, and the angle between the guide surface and the center line of the mounting hole is not greater than the angle between the second side wall and the axis of the first connecting part.

[0020] As an optional solution for the shuttle valve, when the valve sleeve and the valve seat are not fully assembled, the inner wall of the mounting hole has a ring-shaped inclined surface at a position adjacent to the end of the second connecting portion, and the inclined surface is set at an acute angle to the guide surface.

[0021] As an optional solution of the shuttle valve, the valve sleeve is a steel valve sleeve; the valve seat is a steel valve seat.

[0022] The beneficial effects of this application are:

[0023] The shuttle valve provided in the present application includes a valve core, a valve sleeve, and a valve seat. The valve core is accommodated in the valve sleeve. The valve sleeve has a first connection portion, and the outer peripheral wall of the first connection portion is provided with a press-in groove arranged in an annular shape. The valve seat has a second connection portion, and the second connection portion has a mounting hole for accommodating the first connection portion. When the valve sleeve and the valve seat are assembled, the outer peripheral wall of the first connection portion fits with the inner wall of the mounting hole, and a portion of the second connection portion is inserted into the press-in groove, and a portion of the outer peripheral wall of the second connection portion fits with a portion of the inner wall of the press-in groove. Compared with the solution in which the valve seat and the valve sleeve are connected by threads, by pressing the first connection portion into the mounting hole of the second connection portion and inserting a portion of the second connection portion into the press-in groove, not only can the connection strength between the valve sleeve and the valve seat be improved, but also the sealing of the connection between the two can be improved, thereby reducing the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present application and these drawings without any creative work.

[0025] Figure 1 A schematic diagram of an exploded view of the shuttle valve provided in an embodiment of the present application in an unassembled state is shown.

[0026] Figure 2 A cross-sectional schematic diagram of a shuttle valve provided in an embodiment of the present application during assembly and before assembly is completed is shown.

[0027] Figure 3 A cross-sectional schematic diagram of the shuttle valve provided in an embodiment of the present application after completion of assembly is shown.

[0028] Figure 4 Shown Figure 2 Enlarged view of point A in the middle.

[0029] Reference numerals:

[0030] 1. Valve sleeve; 11. First connecting portion; 110. Press-in groove; 1101. First side wall; 1102. Bottom wall; 1103. Second side wall;

[0031] 2. Valve seat; 21. Second connecting portion; 210. Mounting hole; 211. Position-limiting step surface; 212. Groove; 2121. First groove wall; 2122. Second groove wall; 213. Guide surface; 214. Inclined surface; 3. Valve core. DETAILED DESCRIPTION

[0032] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the foregoing drawings.

[0033] In this application, the terms "comprises," "includes," "has," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0034] In this application, the term "and / or" describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this application generally indicates that the related objects are in an "and / or" relationship.

[0035] In this application, the terms "connect," "combine," "couple," and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without an intermediary, and an indirect connection refers to two parts or components being connected to at least one intermediary, with the two parts or components being connected via the intermediary. Furthermore, "connect" and "couple" are not limited to physical or mechanical connections or couplings and may include electrical connections or couplings.

[0036] In this application, it will be understood by those skilled in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. associated with a specific value. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0037] In this application, it will be understood by those skilled in the art that the function performed by an assembly can be performed by one assembly, multiple assemblies, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one assembly, or a combination of multiple parts.

[0038] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to the other element "upper" or "lower", but also be indirectly connected to the other element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, below can include directly below, lower left, lower right, lower front and lower back, etc.

[0039] Figure 1 A schematic diagram of an exploded view of the shuttle valve provided in an embodiment of the present application in an unassembled state is shown. Figure 2 A cross-sectional schematic diagram of a shuttle valve provided in an embodiment of the present application during assembly and before assembly is completed is shown. Figure 3 FIG1 shows a cross-sectional view of the shuttle valve provided in the embodiment of the present application after assembly. Figures 1 to 3 As shown, the shuttle valve comprises a valve core 3, a valve sleeve 1, and a valve seat 2. The valve core 3 is housed within the valve sleeve 1. The valve sleeve 1 has a first connecting portion 11, the outer peripheral wall of which is defined by an annular press-fit groove 110. The valve seat 2 has a second connecting portion 21, which has a mounting hole 210 therein for receiving the first connecting portion 11. When the valve sleeve 1 and valve seat 2 are assembled, the outer peripheral wall of the first connecting portion 11 abuts against the inner wall of the mounting hole 210, and a portion of the second connecting portion 21 is engaged with the press-fit groove 110. Furthermore, a portion of the outer peripheral wall of the second connecting portion 21 abuts against a portion of the inner wall of the press-fit groove 110. Compared to a threaded connection between the valve seat 2 and the valve sleeve 1, by pressing the first connecting portion 11 into the mounting hole 210 of the second connecting portion 21 and engaging a portion of the second connecting portion 21 with the press-fit groove 110, not only the connection strength between the valve sleeve 1 and the valve seat 2 is enhanced, but also the sealing performance of the connection between the two is improved, reducing the risk of leakage.

[0040] In this embodiment, the valve sleeve 1 is a steel valve sleeve, and the valve seat 2 is a steel valve seat. Furthermore, the valve sleeve 1 and the valve seat 2 can be formed by machining.

[0041] During the assembly process of the valve seat 2 and the valve sleeve 1, the valve seat 2 is assembled onto the valve seat 2 using a press. Specifically, the valve sleeve 1 is clamped by the press's fixture, and the mounting hole 210 of the valve seat 2 is fitted over the first connecting portion 11 of the valve sleeve 1. The press then applies pressure to the valve seat 2, causing it to move toward the position of the valve sleeve 1. During this process, the second connecting portion 21 bends and deforms toward the mounting hole 210 and snaps into the press-fit groove 110, thereby strengthening the connection between the valve seat 2 and the valve sleeve 1. Furthermore, the partial deformation of the second connecting portion 21, snapping into the press-fit groove 110, improves the seal between the second connecting portion 21 and the first connecting portion 11, reducing the risk of leakage.

[0042] Figure 4 Shown Figure 2 The enlarged view of point A in the middle. Figure 4 Combine Figures 2 to 3 As shown, the press-fit groove 110 comprises a first side wall 1101, a bottom wall 1102, and a second side wall 1103, which are sequentially connected. The angles between the first and second side walls 1101, 1103, and the axis of the first connecting portion 11 are all less than 90°. This arrangement supports and guides the deformation of the second connecting portion 21 of the valve seat 2 under stress through the inclination angles of the first and second side walls 1101, 1103, ensuring that the second connecting portion 21 can be smoothly inserted into the press-fit groove 110 after being deformed under stress.

[0043] In one embodiment, the angle between the first side wall 1101 and the axis of the first connecting portion 11 is smaller than the angle between the second side wall 1103 and the axis of the first connecting portion 11. For example, the angle between the first side wall 1101 and the axis of the first connecting portion 11 can be 45°, while the angle between the second side wall 1103 and the axis of the first connecting portion 11 can be 81°. Of course, in other embodiments, the designer can design the inclination angles of the first side wall 1101 and the second side wall 1103 according to specific needs, and this is not limited here.

[0044] In order to reduce the friction of the inner wall of the press-fit groove 110 on the deformed curved portion of the second connecting portion 21 , a circular arc transition is formed between the first side wall 1101 and the bottom wall 1102 ; and a circular arc transition is formed between the second side wall 1103 and the bottom wall 1102 .

[0045] In this embodiment, the mounting hole 210 has a limiting step surface 211. When the valve sleeve 1 and the valve seat 2 are assembled, the end surface of the first connecting portion 11 abuts against the limiting step surface 211. This arrangement not only limits the assembly of the valve sleeve 1 and the valve seat 2 through the abutment between the end surface of the first connecting portion 11 and the limiting step surface 211, but also improves the sealing between the connection between the two and reduces the risk of leakage through the close abutment between the limiting step surface 211 and the end surface of the first connecting portion 11.

[0046] When the valve sleeve 1 and valve seat 2 are not fully assembled, the inner wall of the mounting hole 210 has an annular groove 212. The minimum distance between the groove 212 and the limiting step surface 211 is no less than the minimum distance between the first side wall 1101 and the end face of the first connecting portion 11. The provision of the groove 212 reduces the stress on the second connecting portion 21 during deformation, facilitating deformation of the second connecting portion 21 under external force and its insertion into the press-fit groove 110.

[0047] It can be understood that the groove 212 is used to reduce the deformation stress of the second connecting part 21. The setting position of the groove 212 should take into account the distance between the end of the second connecting part 21 and the limiting step surface 211, and the distance between the press-in groove 110 on the first connecting part 11 and the end face of the first connecting part 11, so as to ensure that the second connecting part 21 can bend and deform at the groove 212 under the action of external force, and prevent the second connecting part 21 from cracking or breaking due to excessive bending stress.

[0048] In this embodiment, the groove 212 includes a first groove wall 2121 and a second groove wall 2122 connected at an obtuse angle to the first groove wall 2121. For example, the angle between the first groove wall 2121 and the second groove wall 2122 is any angle between 145° and 160°, such as 150°, and examples thereof are not further described herein.

[0049] When the valve sleeve 1 and valve seat 2 are not fully assembled, the outer peripheral wall of the second connecting portion 21 adjacent to its end has an annular guide surface 213. The angle between the guide surface 213 and the centerline of the mounting hole 210 is no greater than the angle between the second side wall 1103 and the axis of the first connecting portion 11. During the downward movement of the valve seat 2, the second side wall 1103 guides the end of the second connecting portion 21, causing it to deform toward the mounting hole 210. Furthermore, the guide surface 213 cooperates with the second side wall 1103 to ensure that the end of the second connecting portion 21 bends and deforms more smoothly toward the mounting hole 210, thereby reducing friction between the end of the second connecting portion 21 and the second side wall 1103.

[0050] Furthermore, when the valve sleeve 1 and valve seat 2 are not fully assembled, the inner wall of the mounting hole 210 has an annular inclined surface 214 adjacent to the end of the second connecting portion 21. The inclined surface 214 forms an acute angle with the guide surface 213. This arrangement prevents the end of the second connecting portion 21 from scraping against the wall of the press-fit groove 110 during deformation, thereby reducing the deformation resistance of the second connecting portion 21 and ensuring that the second connecting portion 21 can be smoothly inserted into the press-fit groove 110.

[0051] The above shows and describes the basic principles, main features and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the scope of protection of this application.

Claims

1. A shuttle valve, characterized in that: include: A valve sleeve (1) has a first connecting portion (11), wherein an outer peripheral wall of the first connecting portion (11) is provided with an annular press-in groove (110); A valve seat (2) having a second connecting portion (21), wherein the second connecting portion (21) has a mounting hole (210) for accommodating the first connecting portion (11), and wherein the second connecting portion (21) is bent and deformed in the direction of the mounting hole (210) and is inserted into the press-fit groove (110) during the assembly process of the valve seat (2) and the valve sleeve (1); When the valve sleeve (1) and the valve seat (2) are assembled, the outer peripheral wall of the first connecting portion (11) fits against the inner wall of the mounting hole (210), a portion of the second connecting portion (21) is inserted into the press-in groove (110), and a portion of the outer peripheral wall of the second connecting portion (21) fits against a portion of the inner wall of the press-in groove (110).

2. The shuttle valve according to claim 1, characterized in that The press-in groove (110) comprises a first side wall (1101), a bottom wall (1102) and a second side wall (1103) connected in sequence, and the angles between the first side wall (1101) and the second side wall (1103) and the axis of the first connecting portion (11) are all less than 90°.

3. The shuttle valve according to claim 2, characterized in that The angle between the first side wall (1101) and the axis of the first connecting portion (11) is smaller than the angle between the second side wall (1103) and the axis of the first connecting portion (11).

4. The shuttle valve according to claim 3, characterized in that A circular arc transition is formed between the first side wall (1101) and the bottom wall (1102); and / or There is an arc transition between the second side wall (1103) and the bottom wall (1102).

5. The shuttle valve according to claim 2, characterized in that The mounting hole (210) has a limiting step surface (211), and when the valve sleeve (1) and the valve seat (2) are assembled, the end surface of the first connecting portion (11) fits against the limiting step surface (211).

6. The shuttle valve according to claim 5, characterized in that When the valve sleeve (1) and the valve seat (2) are not fully assembled, the inner wall of the mounting hole (210) has a groove (212) arranged in an annular shape, and the minimum distance between the groove (212) and the limiting step surface (211) is not less than the minimum distance between the first side wall (1101) and the end face of the first connecting portion (11).

7. The shuttle valve according to claim 6, characterized in that The groove (212) has a first groove wall (2121) and a second groove wall (2122) connected to the first groove wall (2121) at an obtuse angle.

8. The shuttle valve according to claim 2, characterized in that When the valve sleeve (1) and the valve seat (2) are not fully assembled, the outer peripheral wall of the second connecting portion (21) adjacent to its end has a guide surface (213) arranged in an annular shape, and the angle between the guide surface (213) and the center line of the mounting hole (210) is not greater than the angle between the second side wall (1103) and the axis of the first connecting portion (11).

9. The shuttle valve according to claim 8, characterized in that When the valve sleeve (1) and the valve seat (2) are not completely assembled, the inner wall of the mounting hole (210) has a ring-shaped inclined surface (214) at a position adjacent to the end of the second connecting portion (21), and the inclined surface (214) is arranged at an acute angle to the guide surface (213).

10. The shuttle valve according to any one of claims 1 to 9, characterized in that: The valve sleeve (1) is a steel valve sleeve; the valve seat (2) is a steel valve seat.

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