VDA stop valve

Abstract

The utility model relates to the field of flow guide control, in particular to a VDA stop valve which comprises a first pipe fitting, a second pipe fitting and a connecting assembly, the connecting assembly is arranged on the first pipe fitting and used for connecting the first pipe fitting and the second pipe fitting, an ejection structure is arranged in the second pipe fitting, a stop assembly is arranged in the first pipe fitting, and the ejection structure is connected with the stop assembly. The cut-off assembly comprises a piston and an elastic part, the elastic part is arranged at one end of the piston, a guide limiting structure used for limiting displacement of the cut-off assembly is arranged in the first pipe fitting and the connecting assembly, the end, sleeved with the elastic part, of the piston penetrates through the guide limiting structure, and the other end of the piston is in sealed connection with the connecting assembly through the guide limiting structure. The stop valve and the pipeline connector (such as a VDA connector) are integrated to form a modular assembly, installation and maintenance are convenient, installation and maintenance cost is reduced, and economic benefits are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flow control, in particular to a VDA stop valve. BACKGROUND

[0002] The working principle of the stop valve is to realize the stop or regulation of fluid by the contact of the valve disc (or valve disc) and the valve seat. When the valve disc is closely attached to the valve seat, the fluid is completely cut off; when the valve disc is away from the valve seat, the fluid can pass freely.

[0003] In the pipeline flow control, the stop valve is a commonly used key component, mainly used for regulating or cutting off fluid flow. However, the existing stop valve usually needs to be installed independently, occupies a large space, and the installation process is complicated, which increases the system complexity. SUMMARY

[0004] In view of this, the utility model relates to a VDA stop valve, which aims to solve the above technical problems.

[0005] The utility model relates to a VDA stop valve, which comprises a first pipe fitting, a second pipe fitting and a connecting assembly, the connecting assembly is arranged on the first pipe fitting, and the connecting assembly is used for connecting the first pipe fitting and the second pipe fitting, a top opening structure is arranged in the second pipe fitting, a stop assembly is arranged in the first pipe fitting, the stop assembly comprises a piston and an elastic piece, the elastic piece is arranged at one end of the piston, a guide limiting structure for limiting the displacement of the stop assembly is arranged in the first pipe fitting and the connecting assembly, one end of the piston, which is sleeved with the elastic piece, penetrates the guide limiting structure, and the other end of the piston is sealingly connected with the connecting assembly through the guide limiting structure.

[0006] In some embodiments of the present application, the guide limiting structure comprises a limiting seat arranged in the first pipe fitting and a limiting portion arranged on the piston and abutting against the first through hole of the connecting assembly.

[0007] In some embodiments of the present application, one end of the piston, which is provided with the elastic piece, is telescopically arranged in the sliding sleeve of the limiting seat, and the other end of the piston penetrates the first through hole.

[0008] In some embodiments of the present application, the guide limiting structure comprises a sliding groove and a sliding rib, and any one of the sliding groove and the sliding rib is arranged on the inner wall of the connecting assembly, and the remaining one is arranged on the piston.

[0009] In some embodiments of the present application, one end of the piston, which penetrates the first through hole, is provided with a sealing portion, and the sealing portion forms a seal with the hole wall of the first through hole.

[0010] In some embodiments of the present application, the sealing portion is provided with a first groove, and a sealing element is arranged in the first groove.

[0011] In some embodiments of the present application, the limiting portion has a diameter greater than that of the first through hole, and the limiting portion is provided with a second groove, one end of the elastic element abutting against the second groove, and the other end abutting against the limiting seat.

[0012] In some embodiments of the present application, the limiting seat is provided with at least one second through hole for conducting the inner cavities of the first pipe element and the connecting assembly.

[0013] In some embodiments of the present application, the top opening structure comprises a top block arranged in the second pipe element.

[0014] In some embodiments of the present application, the top opening structure comprises at least one third through hole for conducting the inner cavities of the connecting assembly and the second pipe element.

[0015] Compared with the prior art, the utility model has the advantages that the utility model discloses a guiding and limiting structure and a cutoff assembly, the cutoff control of the inner cavity of the first pipe element is realized through the cooperation of the cutoff assembly and the guiding and limiting structure, the cutoff assembly controls the formation of the seal in the first pipe element when the first pipe element and the second pipe element are not connected, the top opening structure of the second pipe element drives the direct assembly to move under the limitation of the guiding and limiting structure when the first pipe element and the second pipe element are connected, the conduction of the first pipe element and the second pipe element is realized, the simultaneous control of the pipe element connection and the fluid cutoff is realized, the quick connection and disassembly of the pipe element are facilitated, the maintenance cost caused by the inaccuracy of fluid control during the connection and disassembly of the pipe element is avoided, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the present application. Moreover, the same reference numerals are used throughout the same figures. In the drawings:

[0017] Figure 1 An explosion structure schematic view of a VDA cutoff valve provided by an embodiment of the utility model;

[0018] Figure 2 A three-dimensional structure schematic view of a second pipe element provided by an embodiment of the utility model;

[0019] Figure 3 The side view of the second pipe fitting provided by the embodiment of the utility model;

[0020] Figure 4 The three-dimensional structure schematic view of the connecting assembly provided by the embodiment of the utility model;

[0021] Figure 5 The side view of the connecting assembly provided by the embodiment of the utility model;

[0022] Figure 6 The three-dimensional structure schematic view of the first pipe fitting and the cutoff assembly provided by the embodiment of the utility model;

[0023] Figure 7 The three-dimensional structure schematic view of the piston provided by the embodiment of the utility model;

[0024] Figure 8 The three-dimensional structure schematic view of the limiting seat provided by the embodiment of the utility model;

[0025] Figure 9 The three-dimensional structure schematic view of the cutoff assembly and the limiting seat provided by the embodiment of the utility model.

[0026] In the drawing: 1, first pipe fitting; 2, second pipe fitting; 21, top block; 211, third recess; 22, third through hole; 3, connecting assembly; 31, first through hole; 4, cutoff assembly; 41, piston; 411, sealing part; 413, sealing element; 414, second recess; 42, elastic element; 51, limiting seat; 511, second through hole; 52, limiting part; 53, sliding sleeve; 54, sliding groove; 55, sliding rib. DETAILED DESCRIPTION

[0027] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and embodiments. The following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0028] In the description of the present application, it is understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Combination Figures 1-9 As shown, this embodiment provides a VDA shut-off valve, including a first pipe fitting 1, a second pipe fitting 2, and a connecting assembly 3. The connecting assembly 3 is disposed on the first pipe fitting 1 and is used to connect the first pipe fitting 1 and the second pipe fitting 2. The second pipe fitting 2 is provided with a top-opening structure. The first pipe fitting 1 is provided with a shut-off assembly 4. The shut-off assembly 4 includes a piston 41 and a spring member 42. The spring member 42 is disposed at one end of the piston 41. The first pipe fitting 1 and the connecting assembly 3 are provided with a guide limiting structure for limiting the displacement of the shut-off assembly 4. One end of the piston 41, on which the spring member 42 is sleeved, passes through the guide limiting structure. The other end of the piston 41 is sealed to the connecting assembly 3 through the guide limiting structure.

[0032] Specifically, in this embodiment, after the cut-off component 4 is assembled with the guide limiting structure, a seal is formed between the connecting component 3 and the first pipe 1. When the second pipe 2 is assembled with the connecting component 3, the opening structure drives the cut-off component 4 to move along the guide limiting structure, so that the first pipe 1 and the second pipe 2 are connected.

[0033] It can be understood that the adapter assembly 3 is arranged on the first pipe 1 in advance in the embodiment, the adapter assembly 3 and the inner cavity of the first pipe 1 are communicated, when the first pipe 1 and the second pipe 2 are assembled, the first pipe 1 and the second pipe 2 are connected through the adapter assembly 3. The adapter assembly 3 and the first pipe 1 are provided with a stop assembly 4, the stop assembly 4 includes a spring 42 and a piston 41, the spring 42 is arranged at one end of the piston 41, one end of the piston 41 provided with the spring 42 is arranged on a guide limiting structure, the other end of the piston 41 is sealingly connected with the adapter assembly 3 through the guide limiting structure, and then the sealing of the inner cavities of the first pipe 1 and the adapter assembly 3 is realized. After the second pipe 2 and the first pipe 1 are assembled through the adapter assembly 3, the top opening structure on the second pipe 2 drives the end of the piston 41 sealingly connected with the adapter assembly 3 to move along the guide limiting structure, so that the piston 41 and the adapter assembly 3 are no longer sealingly connected, and then the inner cavities of the first pipe 1 and the second pipe 2 are communicated.

[0034] In a specific embodiment of the present application, the guide limiting structure includes a limiting seat 51 arranged in the first pipe 1 and a limiting portion 52 arranged on the piston 41 and abutting against the first through hole 31 of the adapter assembly 3.

[0035] It can be understood that the limiting seat 51 and the limiting portion 52 are respectively connected with the two ends of the piston 41 in the embodiment, so as to limit the movement stroke of the piston 41.

[0036] In a specific embodiment of the present application, one end of the piston 41 provided with the spring 42 is arranged in the sliding sleeve 53 of the limiting seat 51 in an extendable manner, and the other end of the piston 41 passes through the first through hole 31.

[0037] It can be understood that the limiting seat 51 in the embodiment is provided with a sliding sleeve 53, one end of the piston 41 provided with the elastic element 42 is telescopically arranged in the sliding sleeve 53, the sliding sleeve 53 limits the movement direction of the piston 41, and deviation of the piston 41 in the movement process is avoided. At the same time, since the one end of the piston 41 provided with the elastic element 42 is in the sliding sleeve 53, at this time, one end of the elastic element 42 is arranged on the piston 41, and the other end is abutted on the elastic seat. When the one end of the piston 41 provided with the elastic element 42 is telescopically moved in the sliding sleeve 53, the elastic element 42 is forced to be compressed and reset. When the second pipe 2 is assembled with the first pipe 1 through the connecting assembly 3, the top opening structure of the second pipe 2 is in contact with the end of the piston 41 passing through the first through hole 31 and being sealed, and drives the piston 41 to move along the guide limiting structure, the one end of the piston 41 provided with the elastic element 42 is elongated after passing through the sliding sleeve 53, at this time, the elastic element 42 is compressed. When the second pipe 2 and the first pipe 1 are disconnected, the compression force of the elastic element 42 disappears and returns to the original state, and then drives the piston 41 to pass through the first through hole 31 and be sealed again. That is, the automatic cutoff in the first pipe 1 is realized by cooperation of the cutoff assembly 4 and the guide limiting structure in the embodiment.

[0038] In a specific embodiment of the present application, the guide limiting structure includes a sliding groove 54 and a sliding rib 55, and any one of the sliding groove 54 and the sliding rib 55 is arranged on the inner wall of the connecting assembly 3, and the remaining one is arranged on the piston 41.

[0039] Specifically, in the embodiment, the sliding groove 54 and the sliding rib 55 are correspondingly arranged on the inner wall of the connecting assembly 3 and the piston 41, and the movement direction of the piston 41 is further guided, the accurate displacement of the piston 41 in the axial direction of the first pipe 1 is ensured, the cutoff effect is ensured, and the risk of leakage caused by position deviation is avoided.

[0040] In a specific embodiment of the present application, the end of the piston 41 passing through the first through hole 31 is provided with a sealing part 411, and the sealing part 411 forms a seal with the hole wall of the first through hole 31.

[0041] Specifically, in the embodiment, the sealing part 411 seals the piston 41 and the first through hole 31, and the sealing of the inner cavity of the connecting assembly 3 and the first pipe 1 is realized.

[0042] In a specific embodiment of the present application, a first recess is arranged on the sealing part 411, and a sealing element 413 is arranged in the first recess.

[0043] Specifically, in the embodiment, the sealing part 411 is provided with the first recess, and the sealing element 413 is arranged in the first recess, the sealing effect of the piston 41 and the hole wall of the first through hole 31 is improved, and leakage is avoided.

[0044] In an embodiment of the present application, the limiting portion 52 has a diameter greater than that of the first through hole 31, and the limiting portion 52 is provided with a second groove 414, one end of the elastic member 42 abutting against the second groove 414, and the other end abutting against the limiting seat 51.

[0045] Specifically, the elastic member 42 in the embodiment is preferably a spring, one end of the spring being sleeved on the end of the piston 41 penetrating through the sliding sleeve 53, and the other end abutting against the limiting seat 51, so that when the piston 41 is extended or retracted in the sliding sleeve 53, the spring is forced to perform a compression and recovery movement, thereby realizing automatic cutoff operation in the first pipe 1.

[0046] Specifically, since the spring is sleeved on the end of the piston 41 penetrating through the sliding sleeve 53, the limiting portion 52 of the piston 41 is provided with the second groove 414, i.e., one end of the spring abutting against the second groove 414, and the other end abutting against the limiting seat 51, thereby avoiding the spring from being twisted when performing the compression and recovery movement, affecting the axial movement of the piston 41, and further ensuring quick and accurate cutoff in the first pipe 1.

[0047] In an embodiment of the present application, the limiting seat 51 is provided with at least one second through hole 511 for conducting the inner cavities of the first pipe 1 and the connecting assembly 3.

[0048] Specifically, in the embodiment, sealing is realized by the piston 41 and the first through hole 31 of the connecting assembly 3, and the connecting assembly 3 and the first pipe 1 are conducted through the second through hole 511 of the limiting seat 51, thereby ensuring the overall sealing cutoff of the connecting assembly 3 and the first pipe 1.

[0049] In an embodiment of the present application, the top opening structure includes a top block 21 arranged in the second pipe 2.

[0050] Specifically, the top opening structure in the embodiment can also be a top rod, and any structure capable of realizing the top opening function can be arranged, which is not limited in the embodiment.

[0051] Specifically, the top block 21 in the embodiment can be provided with a third groove 211 for accommodating one end of the piston 41 penetrating through the first through hole 31, thereby ensuring the accurate butt joint position of the top opening structure and the piston 41.

[0052] In an embodiment of the present application, the top opening structure includes at least one third through hole 22 for conducting the inner cavities of the connecting assembly 3 and the second pipe 2.

[0053] Specifically, the top opening structure in the embodiment is provided with at least one third through hole 22, so that when the top opening structure is assembled with the cutoff assembly 4, the second pipe 2 can be conducted with the first pipe 1.

[0054] Those skilled in the art can understand that the above are only preferred embodiments of the present application, and are not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, and for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features therein can be replaced equivalently. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A VDA shut-off valve, comprising a first fitting (1), a second fitting (2), and a connecting assembly (3), wherein the connecting assembly (3) is disposed on the first fitting (1) and is used to connect the first fitting (1) and the second fitting (2), wherein the second fitting (2) is provided with a top-opening structure, and the first fitting (1) is provided with a shut-off assembly (4), characterized in that, The cutoff assembly (4) comprises a piston (41) and an elastic member (42), the elastic member (42) is arranged at one end of the piston (41), the first pipe (1) and the connecting assembly (3) are provided with a guide limiting structure for limiting displacement of the cutoff assembly (4), one end of the piston (41) provided with the elastic member (42) is arranged on the guide limiting structure, the other end of the piston (41) is sealingly connected with the connecting assembly (3) through the guide limiting structure.

2. A VDA stop valve according to claim 1, characterized in that The guide limiting structure comprises a limiting seat (51) arranged in the first pipe (1) and a limiting portion (52) arranged on the piston (41) and abutting against the first through hole (31) of the connecting assembly (3).

3. A VDA stop valve according to claim 2, wherein The piston (41) is arranged in the sliding sleeve (53) of the limiting seat (51) in an extendable manner, and the other end of the piston (41) passes through the first through hole (31).

4. A VDA stop valve according to claim 1, wherein The guide limiting structure comprises a sliding groove (54) and a sliding rib (55), either of the sliding groove (54) and the sliding rib (55) is arranged on the inner wall of the connecting assembly (3), and the other is arranged on the piston (41).

5. A VDA stop valve according to claim 2, wherein The piston (41) is provided with a sealing portion (411) at one end passing through the first through hole (31), and the sealing portion (411) forms a seal with the hole wall of the first through hole (31).

6. A VDA stop valve according to claim 5, wherein The sealing portion (411) is provided with a first groove, and the first groove is provided with a sealing member (413).

7. A VDA stop valve according to claim 2, wherein The diameter of the limiting portion (52) is greater than the diameter of the first through hole (31), and the limiting portion (52) is provided with a second groove (414), one end of the elastic member (42) abuts against the second groove (414), and the other end abuts against the limiting seat (51).

8. A VDA stop valve according to claim 2, wherein The limiting seat (51) is provided with at least one second through hole (511), and the second through hole (511) is used for guiding the inner cavities of the first pipe (1) and the connecting assembly (3).

9. A VDA stop valve according to claim 1, wherein The top opening structure comprises a top block (21) arranged in the second pipe (2).

10. A VDA stop valve according to claim 1, characterized in that The top opening structure comprises at least one third through hole (22), and the third through hole (22) is used for guiding the inner cavities of the connecting assembly (3) and the second pipe (2). The top opening structure comprises at least one third through hole (22), and the third through hole (22) is used for guiding the inner cavities of the connecting assembly (3) and the second pipe (2).

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