Integrated bidirectional check valve

Abstract

The utility model relates to a kind of integrated bidirectional check valve, including valve body, one-stage valve core is slidably arranged in valve body, two-stage valve core is slidably arranged in one-stage valve core, one-stage elastic element is arranged between valve body and one-stage valve core, two-stage elastic element is arranged between one-stage valve core and two-stage valve core;Valve body middle is equipped with one-stage valve core sliding cavity, one-stage inlet hole is equipped with in one-stage valve core sliding cavity left side wall, one-stage through-hole and two-stage through-hole are equipped with in one-stage valve core sliding cavity right side wall, two-stage through-hole is located in one-stage valve core sliding cavity right side wall middle, one-stage through-hole is located in two-stage through-hole outer periphery;Two-stage inlet hole, two-stage valve core sliding cavity, two-stage outlet hole are sequentially equipped with in one-stage valve core middle, two-stage inlet hole is communicated with one-stage inlet hole.The utility model is simple in structure, and small in occupied space;Satisfy one valve body can control the flow direction of two directions.

Description

Technical Field

[0001] This utility model belongs to the field of one-way valve technology, and relates to an integrated bidirectional one-way valve. Background Technology

[0002] With the widespread adoption of compressors, check valves are widely used to control the unidirectional flow of media. Currently, the working relationship is that the pressure at both ends of the check valve is equal, and the valve core is in a static equilibrium state. Therefore, the check valve is difficult to open. It only opens when the pressure at one end is greater than the pressure at the other end, and the flow direction is from the end with the higher pressure to the end with the lower pressure. Because it operates in one direction, it does not have the function of reverse flow pressure stabilization. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated bidirectional check valve that can solve the above-mentioned problems.

[0004] According to the technical solution provided by this utility model: an integrated bidirectional one-way valve includes a valve body, a primary valve core slidably disposed in the valve body, a secondary valve core slidably disposed in the primary valve core, a primary elastic element disposed between the valve body and the primary valve core, and a secondary elastic element disposed between the primary valve core and the secondary valve core; a primary valve core sliding cavity is disposed in the middle of the valve body, a primary air inlet is disposed on the left side wall of the primary valve core sliding cavity, a primary through hole and a secondary through hole are disposed on the right side wall of the primary valve core sliding cavity, the secondary through hole is located in the middle of the right side wall of the primary valve core sliding cavity, and the primary through hole is located on the outer periphery of the secondary through hole; a secondary air inlet, a secondary valve core sliding cavity, and a secondary air outlet are sequentially disposed in the middle of the primary valve core, the secondary air inlet being connected to the primary air inlet; a first sealing structure is disposed between the left side wall of the primary valve core and the primary air inlet, a first guiding structure is disposed between the left side wall of the primary valve core and the primary valve core sliding cavity, and a second sealing structure is disposed between the secondary air outlet and the secondary valve core.

[0005] As a further improvement of this utility model, the first sealing structure includes a valve body sealing surface and a first-stage valve core sealing surface. The valve body sealing surface is located on the inner wall of the left side wall of the sliding cavity of the first-stage valve core, and the first-stage valve core sealing surface is located on the left end face of the first-stage valve core. The valve body sealing surface and the first-stage valve core sealing surface are in contact with each other in the sealing state.

[0006] As a further improvement of this utility model, the first guide structure includes a secondary through hole, which is a circular hole, and the right side of the primary valve core is a matching cylindrical shape, and the right side of the primary valve core moves along the secondary through hole.

[0007] As a further improvement of this utility model, the first-stage elastic element is sleeved on the outer periphery of the right side of the first-stage valve core, the left side of the first-stage valve core is a convex ring, and the left and right ends of the first-stage elastic element abut against the convex ring on the left side of the first-stage valve core and the right side wall of the sliding cavity of the first-stage valve core, respectively.

[0008] As a further improvement of this utility model, the secondary air outlet is a conical hole and the secondary valve core is spherical; the left and right ends of the secondary elastic element abut against the left side wall of the sliding cavity of the secondary valve core and the secondary valve core, respectively.

[0009] As a further improvement of this utility model, the primary elastic element and the secondary elastic element are springs, and the elastic force value of the primary elastic element is higher than that of the secondary elastic element.

[0010] As a further improvement of this utility model, the left side of the valve body is the first connection port, and the right side of the valve body is the second connection port.

[0011] As a further improvement of this utility model, the first connection port and the second connection port are respectively connected to the air outlet of the compressor and the air inlet of the air tank through a threaded structure. The positive and progressive effects of this utility model are as follows: 1. This utility model has a simple structure and occupies little space; it allows one valve body to control the flow direction in two directions.

[0012] 2. When used in conjunction with a compressor system, this utility model can effectively reduce the energy consumption of the compressor. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0014] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0016] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0017] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.

[0018] like Figure 1 As shown, this utility model is an integrated bidirectional one-way valve, including a valve body 1, a primary valve core 3 slidably disposed in the valve body 1, a secondary valve core 5 slidably disposed in the primary valve core 3, a primary elastic element 2 disposed between the valve body 1 and the primary valve core 3, and a secondary elastic element 4 disposed between the primary valve core 3 and the secondary valve core 5.

[0019] The valve body 1 has a primary valve core sliding cavity 1-1 in the middle. The left side wall of the primary valve core sliding cavity 1-1 has a primary air inlet hole. The right side wall of the primary valve core sliding cavity 1-1 has a primary through hole 1-2 and a secondary through hole 1-3. The secondary through hole 1-3 is located in the middle of the right side wall of the primary valve core sliding cavity 1-1, and the primary through hole 1-2 is located on the outer periphery of the secondary through hole 1-3.

[0020] The primary valve core 3 is provided with a secondary air inlet 3-1, a secondary valve core sliding cavity 3-2, and a secondary air outlet 3-3 in sequence. The secondary air inlet 3-1 is connected to the primary air inlet.

[0021] A first sealing structure is provided between the left side wall of the first-stage valve core 3 and the first-stage air inlet. The first sealing structure includes a valve body sealing surface and a first-stage valve core sealing surface 3-4. The valve body sealing surface is located on the inner wall of the left side wall of the first-stage valve core sliding cavity 1-1, and the first-stage valve core sealing surface 3-4 is located on the left end face of the first-stage valve core 3. The valve body sealing surface and the first-stage valve core sealing surface 3-4 are in contact with each other in the sealed state.

[0022] A first guide structure is provided between the left side wall of the first-stage valve core 3 and the sliding cavity 1-1 of the first-stage valve core. The first guide structure includes a second-stage through hole 1-3, which is a round hole. The right side of the first-stage valve core 3 is a matching cylindrical shape, and the right side of the first-stage valve core 3 moves along the second-stage through hole 1-3.

[0023] The first-stage elastic element 2 is sleeved on the outer right side of the first-stage valve core 3. The left side of the first-stage valve core 3 is a convex ring. The left and right ends of the first-stage elastic element 2 respectively abut against the convex ring on the left side of the first-stage valve core 3 and the right side wall of the sliding cavity 1-1 of the first-stage valve core. The first-stage elastic element 2 pushes the first-stage valve core 3 so that the valve body sealing surface and the first-stage valve core sealing surface 3-4 are tightly sealed.

[0024] The secondary air outlet 3-3 and the secondary valve core 5 form a second sealing structure. The secondary air outlet 3-3 is a conical hole, and the secondary valve core 5 is spherical. The left and right ends of the secondary elastic element 4 abut against the left side wall of the secondary valve core sliding cavity 3-2 and the secondary valve core 5, respectively. The secondary elastic element 4 pushes the secondary valve core 5, making the secondary valve core 5 and the secondary air outlet 3-3 tightly sealed.

[0025] The primary elastic element 2 and the secondary elastic element 4 are springs, with the elastic force of the primary elastic element 2 being higher than that of the secondary elastic element 4.

[0026] The left side of valve body 1 has a first connection port 1-4, and the right side of valve body 1 has a second connection port 1-5. In this embodiment, the first connection port 1-4 and the second connection port 1-5 are respectively connected to the air outlet of the compressor and the air inlet of the air tank through a threaded structure.

[0027] The working process of this utility model is as follows: When the compressor starts, the gas at the compressor outlet pushes the primary valve core 3, overcoming the elastic force of the primary elastic element 2, and moves to the right. The valve body sealing surface and the primary valve core sealing surface 3-4 separate, and the gas passes through the primary valve core sliding chamber 1-1 and is discharged from the primary through hole 1-2 to the air inlet of the gas tank. The secondary valve core 5, under the elastic force of the secondary elastic element 4 and the push of the gas at the compressor outlet, is tightly pressed against the secondary outlet hole 3-3.

[0028] When the compressor outlet pressure drops, the pressure of the first-stage elastic element 2 is greater than the compressor outlet pressure, the first-stage valve core 3 returns to its original position, the set pressure of the second-stage elastic element 4 is less than the pressure inside the gas tank, and pushes the second-stage valve core 5 to move to the left, so that the pressure inside the gas tank is used to compensate for the compressor outlet pressure, thereby reducing the compressor's operating energy consumption.

[0029] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. An integrated bidirectional check valve, comprising a valve body (1), characterized in that, A primary valve core (3) is slidably disposed in the valve body (1), and a secondary valve core (5) is slidably disposed in the primary valve core (3). A primary elastic element (2) is disposed between the valve body (1) and the primary valve core (3), and a secondary elastic element (4) is disposed between the primary valve core (3) and the secondary valve core (5). A primary valve core sliding cavity (1-1) is disposed in the middle of the valve body ((1)). A primary air inlet is disposed on the left side wall of the primary valve core sliding cavity (1-1), and a primary through hole (1-2) and a secondary through hole (1-3) are disposed on the right side wall of the primary valve core sliding cavity (1-1). The secondary through hole (1-3) is located in the primary valve core. In the middle of the right side wall of the sliding cavity (1-1), the primary through hole (1-2) is located on the outer periphery of the secondary through hole (1-3); the primary valve core (3) is provided with a secondary air inlet (3-1), a secondary valve core sliding cavity (3-2), and a secondary air outlet (3-3) in sequence in the middle, and the secondary air inlet (3-1) is connected to the primary air inlet; a first sealing structure is provided between the left side wall of the primary valve core (3) and the primary air inlet, a first guiding structure is provided between the left side wall of the primary valve core (3) and the primary valve core sliding cavity (1-1), and a second sealing structure is provided between the secondary air outlet (3-3) and the secondary valve core (5).

2. The integrated bidirectional check valve as described in claim 1, characterized in that, The first sealing structure includes a valve body sealing surface and a first-stage valve core sealing surface (3-4). The valve body sealing surface is located on the inner wall of the left side of the first-stage valve core sliding cavity (1-1), and the first-stage valve core sealing surface (3-4) is located on the left end face of the first-stage valve core (3). The valve body sealing surface and the first-stage valve core sealing surface (3-4) are in contact with each other in the sealing state.

3. The integrated bidirectional check valve as described in claim 1, characterized in that, The first guide structure includes a secondary through hole (1-3), which is a round hole. The right side of the primary valve core (3) is a matching cylindrical shape, and the right side of the primary valve core (3) moves along the secondary through hole (1-3).

4. The integrated bidirectional check valve as described in claim 1, characterized in that, The first-level elastic element (2) is sleeved on the outer periphery of the right side of the first-level valve core (3). The left side of the first-level valve core (3) is a convex ring. The left and right ends of the first-level elastic element (2) respectively abut against the convex ring on the left side of the first-level valve core (3) and the right side wall of the sliding cavity (1-1) of the first-level valve core.

5. The integrated bidirectional check valve as described in claim 1, characterized in that, The secondary air outlet (3-3) is a conical hole, and the secondary valve core (5) is spherical; the left and right ends of the secondary elastic element (4) abut against the left side wall of the secondary valve core sliding cavity (3-2) and the secondary valve core (5) respectively.

6. The integrated bidirectional check valve as described in claim 1, characterized in that, The primary elastic element (2) and the secondary elastic element (4) are springs, and the elastic force of the primary elastic element (2) is higher than that of the secondary elastic element (4).

7. The integrated bidirectional check valve as described in claim 1, characterized in that, The left side of the valve body ((1)) is the first connection port (1-4), and the right side of the valve body ((1)) is the second connection port (1-5).

8. The integrated bidirectional check valve as described in claim 7, characterized in that, The first connection port (1-4) and the second connection port (1-5) are respectively connected to the air outlet of the compressor and the air inlet of the air tank through a threaded structure.

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