CN217463356U

CN217463356U - Bidirectional balance valve

Info

Publication number: CN217463356U
Application number: CN202220482115.9U
Authority: CN
Inventors: 刘飞; 王海瑞
Original assignee: Xinxiang Pingyuan Aeronautical Apparatus Co ltd
Current assignee: Xinxiang Pingyuan Aeronautical Apparatus Co ltd
Priority date: 2021-12-03
Filing date: 2022-03-08
Publication date: 2022-09-20
Anticipated expiration: 2032-03-08

Abstract

The utility model belongs to the technical field of balance valves, in particular to a two-way balance valve, which comprises a hollow valve body, a first valve core component and a second valve core component, wherein the first valve core component comprises a first valve core, a first supporting seat with a first air vent and a first elastic piece; the first valve core is sleeved in the valve body; the first supporting seat is detachably connected to the open end of the valve body; the first elastic piece is arranged between the first supporting seat and the first valve core; the second valve core assembly comprises a second valve core, a second supporting seat with a second air vent and a second elastic piece; the second valve core is sleeved in the first valve core; the second support seat is detachably connected to the open end of the first valve core; the second elastic piece is arranged between the second supporting seat and the second valve core. The utility model is used for it is great to solve present balanced valve overall dimension and weight, is not convenient for be suitable for the technical problem in the field of aerospace.

Description

Bidirectional balance valve

Technical Field

The utility model belongs to the technical field of the balanced valve, concretely relates to two-way balanced valve.

Background

The main function of the balancing valve is to maintain a balance of pressures within the fixed volume system. When the pressure of the fixed volume system is increased, the pressure can be released through the balance valve, and when the pressure of the fixed volume system is reduced, air can be supplemented into the fixed volume system through the balance valve, so that the pressure in the fixed volume system is kept constant.

The prior art discloses a patent application with the name of a balance valve, the number of an authorization notice is CN 208565121U, and the date of the authorization notice is 2019.03.01, the patent application comprises a valve body, pressure regulating devices are arranged at two end parts of the valve body, each pressure regulating device comprises a valve sleeve, a pressure regulating screw/bolt and a second elastic part, the valve sleeve is connected with the valve body, the pressure regulating screw/bolt is in threaded connection with the valve sleeve, the second elastic part is arranged in an inner cavity of the valve sleeve, the second elastic part is supported between the pressure regulating screw/bolt and a first end of a main valve core, and the main valve core is in sealing contact with the valve sleeve through a first sealing ring sleeved at the first end so as to isolate an inner cavity of the valve sleeve from a first area of the first valve cavity; and a vent hole for communicating the inner cavity of the valve sleeve with the outside air is arranged on the valve sleeve or the pressure regulating screw/bolt of the pressure regulating device.

Although the prior art realizes bidirectional pressure regulation and balance, the balance valve with the structure has the advantages of larger overall dimension, heavier weight and higher manufacturing cost, and is limited to be used in some aerospace fields with higher overall dimension and weight requirements.

SUMMERY OF THE UTILITY MODEL

To the not enough of existence among the prior art, the utility model aims to provide a two-way balance valve for it is great to solve present balance valve overall dimension and weight, is not convenient for be suitable for the technical problem in aerospace field.

In order to achieve the above purpose, the technical scheme of the utility model is that: a bidirectional balance valve comprises a hollow valve body, a first valve core assembly and a second valve core assembly, wherein the first valve core assembly comprises a first valve core, a first supporting seat with a first air hole and a first elastic piece; one end of the valve body is open, the other end of the valve body is provided with a first vent hole, the first valve core is sleeved in the valve body, and a ventilation gap is formed between the side wall of the valve body and the side wall of the first valve core; the first supporting seat is detachably connected to the open end of the valve body; the first elastic piece is arranged between the first supporting seat and the first valve core, and elastically supports the first valve core to tightly abut against the end part, close to the first vent hole, in the valve body so as to seal the first vent hole;

the second valve core assembly comprises a second valve core, a second supporting seat with a second air hole and a second elastic piece; the first valve core is hollow, the end part close to the first vent hole is open, and the other end of the first valve core is provided with a second vent hole; the second valve core is sleeved in the first valve core, and a ventilation gap is formed between the side wall of the second valve core and the side wall of the first valve core; the second support seat is detachably connected to the open end of the first valve core; the second elastic piece is arranged between the second supporting seat and the second valve core, and elastically supports the second valve core to abut against the end part, close to the second vent hole, in the first valve core, so that the second vent hole is sealed.

Preferably, an annular first sealing protrusion is arranged on an end face, close to the first vent hole, of the first valve core, and the first sealing protrusion abuts against an end portion, close to the first vent hole, in the valve body, so that the first vent hole is sealed.

Preferably, the first valve core assembly further comprises a first sealing gasket disposed between the first sealing protrusion and the valve body.

Preferably, the first supporting seat is in threaded connection with the valve body.

Preferably, the first elastic element is a first compression spring, the first compression spring is sleeved outside the first valve core, and the end part of the first compression spring abuts against the first support seat.

Preferably, an annular second sealing protrusion is arranged on an end face, close to the second vent hole, of the second valve core, and the second sealing protrusion abuts against an end portion, close to the second vent hole, in the first valve core, so that the first vent hole is sealed.

Preferably, the second spool assembly further includes a second sealing gasket disposed between the second sealing protrusion and the first spool.

Preferably, the second support seat is in threaded connection with the first valve core.

Preferably, the second elastic element is a second compression spring supported between the second support seat and the second valve spool.

Preferably, the valve body is close to the end connection of first air vent has dustproof cap, dustproof cap with be provided with the filter screen between the valve body.

Adopt the utility model discloses technical scheme's beneficial effect does:

the utility model discloses the second valve core subassembly is installed at the inside check valve that forms of first case subassembly, and first case subassembly is installed and is formed another reverse check valve in the valve body to constitute the balanced valve that can two way control, and two sets of case subassembly covers overlap together, save space, reduce volume and weight, be convenient for use in the aviation field that requires height to volume and weight.

Drawings

Fig. 1 is a general schematic diagram of an embodiment of a bidirectional balanced valve.

In the figure 1, 1-a valve body, 11-a first vent hole, 2-a first valve core assembly, 21-a first sealing gasket, 22-a first valve core, 221-a second vent hole, 23-a first elastic part, 24-a first supporting seat, 241-a first vent hole, 3-a filter screen, 4-a dustproof cap, 5-a second valve core assembly, 51-a second supporting seat, 511-a second vent hole, 52-a second elastic part, 53-a second valve core and 54-a second sealing gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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, and do not limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The specific embodiment is as follows:

embodiment 1, as shown in fig. 1, a two-way balance valve includes a valve body 1, a first spool assembly 2, and a second spool assembly 5. The valve body 1 is in a hollow cylinder shape; the right end of the valve body 1 is in an open state, a first vent hole 11 is formed in the position, located at the center, of the left end face, and the aperture of the first vent hole 11 is smaller than the radius of the hollow cavity of the valve body 1.

In this embodiment, the right-hand member lateral surface of valve body 1 is provided with the external screw thread for connect the device that needs the pressure regulating, and be provided with the sealing washer in the left side of external screw thread next-door neighbour, guarantee the tightness of being connected between valve body and the device that needs the pressure regulating.

The second valve core assembly 5 is arranged inside the first valve core assembly 2, and the two valve core assemblies form a one-way valve. The second valve core assembly 5 is communicated with the first valve core assembly 2 and is arranged in the valve body 1, and the first valve core assembly 2 is matched with the valve body 1 to form another one-way valve, so that the valve body 1, the first valve core assembly 2 and the second valve core assembly 5 form a balance valve, and bidirectional pressure regulation control is realized; the valve body 1, the first valve core assembly 2 and the second valve core assembly 5 are sequentially sleeved and overlapped, and the whole size and weight are reduced.

The first spool assembly 2 includes a first spool 22, a first support seat 24, and a first resilient member 23. Specifically, the first valve core 22 is sleeved in the valve body 1 from the open end of the valve body 1, the first valve core 22 can slide left and right in the valve body 1, and an air-permeable gap for air to pass through is arranged between the first valve core 22 and the side wall of the valve body 1; the first supporting seat 24 is detachably connected to the open end of the valve body 1, and the first supporting seat 24 blocks the first valve core 22. The first elastic element 23 is arranged between the first support seat 24 and the first valve core 22, and the first elastic element 23 has a leftward elastic support force for the first valve core 22, and supports the left end of the first valve core 22 to abut against the end surface, close to the first vent hole 11, in the valve body 1, so as to seal the first vent hole 11. The first support seat 24 is provided with a first air hole 241 penetrating left and right, and when the check valve formed by the first valve core assembly 2 and the valve body is opened, air passes through the air gap between the first valve core 22 and the side wall of the valve body 1 and the first air hole 241 from right to left, so that one-way ventilation is realized.

In this embodiment, the inside of the first valve core 22 is hollow, the left end of the first valve core 22 is open, the right end of the first valve core 22 is provided with a second vent hole 221, and the aperture of the second vent hole 221 is smaller than the radius of the cavity in the first valve core 22.

The second spool assembly 5 includes a second spool 53, a second support seat 51, and a second elastic member 52. Specifically, the second spool 53 is sleeved in the first spool 22 from the open end of the left end of the first spool 22, the second spool 53 can slide left and right relative to the first spool 22, and an air permeable gap for air to pass through is arranged between the second spool 53 and the side wall of the first spool 22; the second support seat 51 is detachably connected to the open end of the left end of the first valve core 22, so as to stop the second valve core 53. The second elastic element 52 is disposed between the second valve core 53 and the second support seat 51, and has a rightward elastic support force for the second valve core 53, and the right end surface of the second valve core 53 is elastically supported against the right end surface in the first valve core 22, so as to seal the second vent hole 221. The second support seat 51 is provided with a second air vent 511 penetrating left and right, a check valve is formed between the second spool assembly 5 and the first spool 22, and when the check valve is opened, air passes through an air vent gap between the second spool 53 and the side wall of the first spool 22 from right to left and the second air vent 511.

When the two-way balance valve is used, the balance valve is connected to a device needing pressure regulation through the external threads on the valve body 1, when the internal pressure of the device needing pressure regulation is too large, the pressure passes through the first air vent 241 and the second air vent 221 and pushes the second valve core 53, the second valve core 53 slides leftwards to extrude the second elastic part 52, the right end face of the second valve core 53 is separated from the first valve core 22, so that the air vent gap between the second valve core 53 and the side wall of the first valve core 22 and the second air vent 511 are opened, the internal pressure of the device needing pressure regulation is discharged leftwards, and the internal pressure is regulated. When the external pressure of the device needing pressure regulation is larger than the internal pressure, the gas pressure is propped and connected with the first valve core 22 of the second valve core assembly 5 from the left to the right, the first valve core 22 slides to the right and extrudes the first elastic piece 23, and the left end face of the first valve core 22 is separated from the valve body 1, so that the first vent hole 11 is opened, and the internal pressure and the external pressure tend to be balanced. The second valve core assembly 5 of the balance valve is installed and contained in the first valve core 22, the first valve core assembly 2 and the second valve core assembly 5 are installed and contained in the valve body 1, and the components are overlapped, so that the overall size and weight of the balance valve are reduced, and the balance valve is convenient to apply in the aviation field.

Further, an annular first sealing protrusion (not shown in the figure) is arranged on the left end face of the first valve core 22, and when the first valve core 22 seals the first vent hole 11, the annular first sealing protrusion abuts against the valve body 1, so that the sealing performance is ensured.

Further, the first valve core assembly 2 further comprises a first sealing gasket 21. Specifically, the first sealing gasket 21 is placed at the left end in the valve body 1, which enables the annular first sealing protrusion to abut against the first sealing gasket 21 and press and deform the first sealing gasket 21 when the first valve core 22 seals the first vent hole 11, thereby further improving the sealing performance.

Further, a threaded connection is adopted between the first support seat 24 and the valve body 1. The threaded connection is a detachable fixed connection and has the advantages of simple structure, reliable connection, convenient assembly and disassembly and the like.

Further, the first elastic member 23 is a compression spring, and can store energy after being compressed, and can repeatedly realize compression energy storage and recovery of deformation to release deformation energy. In the present embodiment, the compression spring is a cylindrical coil spring. Specifically, a stopping edge is arranged on the outer side of the first valve core 22, the cylindrical coil spring is sleeved on the first valve core 22, and the other end of the cylindrical coil spring abuts against the first support seat 24.

Further, an annular second seal projection is provided on the right end surface of the second spool 53. When the second valve core seals the second vent hole 221, the annular second sealing bulge abuts against the first valve core 22 to realize sealing, and the sealing performance is ensured.

Further, the second spool assembly 5 further comprises a second sealing gasket 54. Specifically, the second sealing gasket 54 is disposed on the right end surface inside the first valve core 22, and when the second valve core 53 seals the second vent hole 221, the annular second sealing protrusion presses and deforms the second sealing gasket 54, thereby further ensuring the sealing performance.

Further, the second support seat 51 and the first valve core 22 are connected by screw threads. The threaded connection is a detachable fixed connection and has the advantages of simple structure, reliable connection, convenient assembly and disassembly and the like.

Further, the second elastic member 52 is a compression spring, and may be a cylindrical or pagoda-shaped coil spring. In the present embodiment, the compression spring is a cylindrical coil spring.

In the present embodiment, the second spool 53 is provided with an opening having an open left end and a closed right end in the circumferential direction. The right end of the cylindrical coil spring extends into the opening of the second valve spool 53, the left end of the cylindrical coil spring abuts against the second supporting seat 51, and the opening ensures the supporting stability of the second elastic element 52.

Further, in order to avoid impurities in the air from entering the device needing pressure regulation, a filter screen 3 is arranged at the left end of the valve body 1. Specifically, there is dustproof cap 4 at the left end of valve body 1 through interior external screw thread connection, fills up the filter screen between dustproof cap and the valve body 1, realizes the filtration to impurity.

The present invention is described above with reference to the accompanying drawings, it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements made by the technical solution of the present invention or the present invention is directly applied to other occasions without improvement, all within the protection scope of the present invention.

Claims

1. A bidirectional balance valve comprises a hollow valve body, a first valve core assembly and a second valve core assembly, and is characterized in that the first valve core assembly comprises a first valve core, a first support seat with a first vent hole and a first elastic piece; one end of the valve body is open, the other end of the valve body is provided with a first vent hole, the first valve core is sleeved in the valve body, and a ventilation gap is formed between the side wall of the valve body and the side wall of the first valve core; the first supporting seat is detachably connected to the open end of the valve body; the first elastic piece is arranged between the first supporting seat and the first valve core, and elastically supports the first valve core to tightly abut against the end part, close to the first vent hole, in the valve body so as to seal the first vent hole;

the second valve core assembly comprises a second valve core, a second supporting seat with a second air hole and a second elastic piece; the first valve core is hollow, the end part close to the first vent hole is open, and the other end of the first valve core is provided with a second vent hole; the second valve core is sleeved in the first valve core, and a ventilation gap is formed between the side wall of the second valve core and the side wall of the first valve core; the second support seat is detachably connected to the open end of the first valve core; the second elastic piece is arranged between the second supporting seat and the second valve core, and elastically supports the second valve core to abut against the end part, close to the second vent hole, in the first valve core so as to seal the second vent hole.

2. The bidirectional balanced valve of claim 1, wherein an annular first sealing protrusion is disposed on an end surface of the first valve core close to the first vent hole, and the first sealing protrusion abuts against an end portion of the valve body close to the first vent hole to seal the first vent hole.

3. The bidirectional balanced valve of claim 2, wherein the first spool assembly further includes a first sealing gasket disposed between the first sealing protrusion and the valve body.

4. A bi-directional balance valve according to claim 3 wherein the first support seat is threadably engaged with the valve body.

5. The bidirectional balanced valve of claim 4, wherein the first elastic member is a first compression spring, and the first compression spring is sleeved outside the first valve core and has an end portion abutting against the first support seat.

6. The bidirectional balanced valve of claim 1, wherein an annular second sealing protrusion is disposed on an end surface of the second valve spool close to the second vent hole, and the second sealing protrusion abuts against an end portion of the first valve spool close to the second vent hole to seal the first vent hole.

7. The bidirectional balanced valve of claim 6, wherein the second spool assembly further includes a second sealing gasket disposed between the second sealing protrusion and the first spool.

8. The two-way balance valve of claim 7, wherein the second support seat is threadably engaged with the first valve spool.

9. The bi-directional balance valve of claim 8 wherein said second resilient member is a second compression spring supported between said second support seat and said second spool.

10. The bidirectional balanced valve of any one of claims 1 to 9, wherein a dust cap is connected to an end of the valve body adjacent to the first vent hole, and a filter screen is disposed between the dust cap and the valve body.