Air intake and drainage valve and air storage cylinder

Abstract

The present invention relates to an air intake and drainage valve and an air storage cylinder. The air intake and drainage valve includes a valve body and a valve stem arranged in the valve body cavity, and also includes a shell arranged on the outside of the valve body; the air storage cylinder includes a body, and the air intake and drainage valve is arranged on the side of the body. The present invention integrates the drainage valve and the pipeline air intake valve into one to form an air intake and drainage valve, which can not only reduce the number of openings in the air storage cylinder body and the number of installed valve bodies, but also reduce weight, which is beneficial to the lightweighting of the air storage cylinder process parts and reduces production costs. In addition, the air intake and drainage valve of the present invention is installed on the side of the end of the air storage cylinder body, and will not cause wear with the ground, thereby causing the problem of air leakage in the brake system; in addition, the drainage and air intake operations are very convenient. In summary, the present invention can solve the technical problems that the drain valve is easy to wear, causing air leakage in the brake system, the drainage operation is inconvenient, the cost is high, and it is not conducive to lightweighting.

Description

Technical Field

[0001] The present invention relates to the technical field of commercial vehicle air cylinders, and in particular to an air intake and drainage valve and an air cylinder. Background Art

[0002] An air reservoir is a gas storage device in a vehicle's braking system. It can be used to store compressed gas from an air compressor or air pump for use in the vehicle's braking, horn, and other systems. Air reservoirs are essential components for commercial vehicles, providing air for braking and other purposes. They must ensure safe use of the gas. The structure of a commercial vehicle air reservoir generally includes the reservoir body, a reservoir connector, a reservoir drain port, a drain valve, and a pipeline air intake valve. The drain valve and pipeline air intake valve each utilize two separate valve bodies. The drain valve is installed at the bottom of the reservoir to drain any accumulated water. Because the air is compressed by the air compressor, filtered and dried before entering the air reservoir, the compressed air will release excess water when it cools down. After a long period of operation, an oil-water mixture will accumulate at the bottom of the air reservoir. In addition, the air pump also inputs water vapor from the air into the air reservoir during the process of compressing the air into the air reservoir. The accumulated water vapor will liquefy into liquid water after cooling. Therefore, the operator needs to regularly drain and inspect the air reservoir through the drain valve to ensure the reliable operation of the air brake system. The pipeline air intake valve is installed on the side of the end of the air reservoir and is used to take air from the external pipeline.

[0003] Due to the limited space available for commercial vehicles, existing air reservoirs are typically located in the middle of the chassis frame, and the drain valve is typically installed at the bottom of the reservoir, resulting in a low mounting position. Conventional drain valves cannot fully prevent the valve from rubbing against ground obstacles while the vehicle is in motion. This drawback can lead to air leaks in the air brake system, insufficient braking force, and increased vehicle energy consumption, impacting power performance. Furthermore, because commercial vehicle air reservoirs often contain a large amount of condensate and impurities, the reservoirs must be frequently drained. To drain, the driver must crawl under the vehicle and manually pull the drain ring on the drain valve to remove the water from the reservoir, a labor-intensive and time-consuming operation. Furthermore, this arrangement requires four air reservoirs per commercial vehicle, each requiring at least eight holes and eight valve bodies, hindering production costs and achieving lightweight design. Consequently, the prior art suffers from the drawbacks of drain valves that easily wear, leading to air leaks in the brake system, inconvenient drainage, high costs, and a disadvantageous effect on lightweight design. Summary of the Invention

[0004] The purpose of the present invention is to provide an air intake and drainage valve and an air storage cylinder, which integrates the drainage valve and the pipeline air intake valve into one, and is installed on the side of the end of the air storage cylinder. It can solve the technical problems that the drainage valve is easy to wear and cause air leakage in the brake system, the drainage operation is inconvenient, the cost is high, and it is not conducive to lightweight.

[0005] To achieve the above-mentioned purpose, the present invention provides an air intake and drainage valve, comprising a valve body and a valve stem disposed in a cavity of the valve body, and also comprising a housing disposed outside the valve body;

[0006] The valve body includes an air inlet portion, a limiting portion, and a connecting portion. The valve body cavity includes an air inlet cavity and a sealing cavity. The valve body cavity within the air inlet portion is the air inlet cavity, and the valve body cavity within the limiting portion and the connecting portion is the sealing cavity. A water outlet hole is provided on the side wall of the valve body. One end of the water outlet hole is connected to the air inlet cavity, and the other end of the water outlet hole passes through the side wall of the valve body and is connected to the outside of the valve body.

[0007] The valve stem includes a pushing portion and an air intake portion, wherein the pushing portion is arranged in the air inlet cavity, the air intake portion is arranged in the sealing cavity, and a pipeline air intake hole and a connecting through hole are arranged in the air intake portion and intersected with each other. The pipeline air intake hole is arranged along the length direction of the valve body cavity, and the middle part of the connecting through hole is connected to the pipeline air intake hole;

[0008] The side wall of the shell is provided with a drainage hole, and the aperture of the drainage hole matches the aperture of the water outlet hole.

[0009] As a preferred solution, the water outlet hole includes a first water outlet hole, a connecting hole, and a second water outlet hole. The first water outlet hole is opened on the inner wall of the air inlet part, and the first water outlet hole is connected to the air inlet cavity. The second water outlet hole is opened on the outer wall of the connecting part. The connecting hole is opened in the middle of the side wall of the valve body. The connecting hole crosses the air inlet part, the limiting part, and the connecting part in sequence, and the two ends of the connecting hole are respectively connected to the first water outlet hole and the second water outlet hole.

[0010] As a preferred solution, the connecting hole is arranged along the length direction of the valve body cavity, and the center lines of the first water outlet hole and the second water outlet hole are both arranged perpendicular to the length direction of the valve body cavity.

[0011] As a preferred solution, two drainage holes are symmetrically provided on the side wall of the shell, and two water outlet holes are symmetrically provided on the side wall of the valve body.

[0012] As a preferred solution, the width of the pushing portion is greater than the diameter of the sealing cavity opening.

[0013] As a preferred solution, a return spring is provided in the air inlet cavity, one end of the return spring is connected to the inner side wall of the air inlet portion, and the other end of the return spring is connected to the pushing portion.

[0014] The present invention also provides an air storage cylinder, comprising a main body, wherein the air intake and drainage valve is provided on the side of the main body.

[0015] Beneficial effects of the present invention:

[0016] The present invention integrates the drain valve and the pipeline air intake valve into one to form an air intake and drain valve, which can not only reduce the number of openings in the air storage cylinder body and the number of installed valve bodies, but also reduce weight, which is beneficial to the lightweighting of the air storage cylinder process and reduces production costs.

[0017] In addition, the air intake and drainage valve of the present invention is installed on the side of the end of the air cylinder body, and will not cause wear and tear with the ground, thereby causing the problem of air leakage in the brake system; in addition, the drainage and air intake operations are very convenient.

[0018] In summary, the present invention can solve the technical problems that the drain valve is easy to wear and lead to leakage of the brake system, the drainage operation is inconvenient, the cost is high, and it is not conducive to lightweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional schematic diagram of the drainage state of the present invention.

[0020] Figure 2 It is a cross-sectional schematic diagram of the gas extraction state of the present invention.

[0021] Figure 3 It is a cross-sectional schematic diagram of the valve body and valve stem of the present invention.

[0022] Figure 4 It is a three-dimensional schematic diagram of the housing of the present invention.

[0023] Description of reference numerals:

[0024] Valve body 1, valve stem 2, housing 3, return spring 4;

[0025] Valve body 1: air inlet portion 11, limiting portion 12, connecting portion 13, air inlet cavity 14, sealing cavity 15, water outlet hole 16, first water outlet hole 17, connecting hole 18, second water outlet hole 19;

[0026] Valve stem 2: pushing portion 21, air intake portion 22, pipeline air intake hole 23, connecting through hole 24;

[0027] Housing 3: Drain hole 31. DETAILED DESCRIPTION

[0028] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the drawings only show portions relevant to the present invention, not all of them.

[0029] In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed or detachable connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention.

[0031] The present invention relates to an air intake and drainage valve and air reservoir. The valve integrates a drainage valve and a pipeline air intake valve to form an air intake and drainage valve, which is mounted on the side of the end of the air reservoir body. This valve can solve the technical problems of easy wear of the drainage valve, which can lead to leakage in the brake system, inconvenient drainage operation, high cost, and disadvantages in lightweight design. This valve body structure can realize the auxiliary pipeline air intake function of commercial vehicles. The supporting pipeline air intake pipeline can be used to inflate tires and provide air source power for body modification mechanisms.

[0032] like Figures 1 to 3 As shown, the present invention relates to an air intake and drainage valve, comprising a valve body 1 , a valve stem 2 arranged in a cavity of the valve body 1 , and a shell 3 arranged outside the valve body 1 .

[0033] The valve body 1 includes an air inlet part 11, a limiting part 12, and a connecting part 13. The outer side of the air inlet part 11 is provided with a thread and is connected to the air cylinder body through a thread; the outer side of the connecting part 13 is provided with a thread and is connected to the shell 3 through a thread; the cavity of the valve body 1 includes an air inlet cavity 14 and a sealing cavity 15. The cavity of the valve body 1 in the air inlet part 11 is the air inlet cavity 14, and the side of the air inlet cavity 14 is the air inlet. The cavity of the valve body 1 in the limiting part 12 and the connecting part 13 is the sealing cavity 15; the side wall of the valve body 1 is provided with a water outlet hole 16, one end of the water outlet hole 16 is connected to the air inlet cavity 14, and the other end of the water outlet hole 16 passes through the side wall of the valve body 1 and is connected to the outside of the valve body 1.

[0034] A return spring 4 is disposed in the air inlet cavity 14 . One end of the return spring 4 is connected to the inner wall of the air inlet portion 11 , and the other end of the return spring 4 is connected to the pushing portion 21 .

[0035] The water outlet hole 16 is a curved hole, including a first water outlet hole 17, a connecting hole 18, and a second water outlet hole 19. The first water outlet hole 17 is provided on the inner side wall of the air inlet portion 11 and is connected to the air inlet cavity 14. The second water outlet hole 19 is provided on the outer side wall of the connecting portion 13. The connecting hole 18 is provided in the middle of the side wall of the valve body 1. The connecting hole 18 sequentially crosses the air inlet portion 11, the limiting portion 12, and the connecting portion 13. The two ends of the connecting hole 18 are respectively connected to the first water outlet hole 17 and the second water outlet hole 19. The connecting hole 18 is arranged along the length direction of the valve body 1 cavity to facilitate processing. The center lines of the first water outlet hole 17 and the second water outlet hole 19 are both arranged perpendicular to the length direction of the valve body 1 cavity.

[0036] The valve stem 2 includes a push portion 21 and an air intake portion 22. The push portion 21 is cross-shaped and is disposed in the air inlet cavity 14 and connected to the return spring 4. The air intake portion 22 is disposed in the sealed cavity 15. A pipeline air intake hole 23 and a connecting through hole 24 are intersectingly provided in the air intake portion 22. In this embodiment, the axes of the air intake hole 23 and the connecting through hole 24 are perpendicular to each other. The pipeline air intake hole 23 is disposed along the length of the cavity of the valve body 1, and the middle portion of the connecting through hole 24 is connected to the pipeline air intake hole 23. The width of the push portion 21 is greater than the diameter of the opening of the sealed cavity 15.

[0037] like Figure 4 As shown, the housing 3 has a sidewall with a drain hole 31 whose diameter matches that of the water outlet hole 16. The housing 3 is externally threaded for threaded connection to an external air intake line. Alternatively, the housing 3 may be unthreaded and directly connected to the air intake line. In this embodiment, two drain holes 31 are symmetrically defined in the sidewall of the housing 3, and two water outlet holes 16 are symmetrically defined in the sidewall of the valve body 1.

[0038] The present invention also relates to an air reservoir, comprising a main body, with the aforementioned air intake and drainage valve disposed on a side of the main body. Mounting the air intake and drainage valve on the side of the end of the air reservoir body prevents abrasion with the ground, which could lead to air leakage in the brake system; furthermore, it facilitates drainage and air intake operations. Alternatively, the air intake and drainage valve can be mounted on the bottom of the air reservoir body. In this way, even if a small amount of water accumulates at the bottom, it can be automatically drained by gravity.

[0039] When draining, if Figure 1 As shown, the air inlet portion 11 of the valve body 1 is connected to the air cylinder, and the shell 3 is rotated. In this embodiment, the shell 3 is rotated 90° so that the drain hole 31 is aligned with the second water outlet hole 19 in the water outlet hole 16, and the accumulated water in the air cylinder body is drained to the outside of the air cylinder.

[0040] When taking air, Figure 2As shown, the shell 3 is rotated so that the drain hole 31 is misaligned with the second water outlet hole 19 in the water outlet hole 16. In this embodiment, the shell 3 is rotated just 90 degrees to close the drainage function of the air intake and drainage valve. Because the compressed air is inevitably discharged from the drain hole 31 to the outside of the air storage cylinder during the drainage process, in order to avoid continued leakage during the air intake process, the drain hole 31 must be closed so that the compressed air only enters the air intake pipeline from the pipeline air intake hole 23. The shell 3 is connected to the air intake pipeline, and the pipeline air intake hole 23 of the valve stem 2 is connected to the air intake pipeline. The valve stem 2 is pressed, the return spring 4 is compressed, and the high-pressure gas inside the air storage cylinder body enters the air intake pipeline from the pipeline air intake hole 23 for use. The air intake direction is shown by the arrow in the figure.

[0041] In order to prevent the shell 3 from rotating again during the air extraction process and causing the drainage hole 31 to open, a limit device can be set on the valve body or the air cylinder body. This limit device can refer to the design of a faucet to prevent further leakage during the air extraction process, thereby affecting the leakage problem of the brake system.

[0042] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An air intake and drainage valve, comprising a valve body (1) and a valve stem (2) disposed in a cavity of the valve body (1), characterized in that: It also includes a housing (3) arranged outside the valve body (1); The valve body (1) includes an air inlet portion (11), a position limiting portion (12), and a connecting portion (13); the cavity of the valve body (1) includes an air inlet cavity (14) and a sealing cavity (15); the cavity of the valve body (1) within the air inlet portion (11) is the air inlet cavity (14); the cavity of the valve body (1) within the position limiting portion (12) and the connecting portion (13) is the sealing cavity (15); a water outlet hole (16) is provided on the side wall of the valve body (1); one end of the water outlet hole (16) is communicated with the air inlet cavity (14), and the other end of the water outlet hole (16) passes through the side wall of the valve body (1) and is communicated with the outside of the valve body (1); The valve stem (2) comprises a pushing portion (21) and an air intake portion (22), wherein the pushing portion (21) is arranged in the air inlet cavity (14), and the air intake portion (22) is arranged in the sealing cavity (15). The air intake portion (22) is provided with a pipeline air intake hole (23) and a connecting through hole (24) which are arranged to intersect with each other. The pipeline air intake hole (23) is arranged along the length direction of the cavity of the valve body (1), and the middle part of the connecting through hole (24) is connected to the pipeline air intake hole (23); A drainage hole (31) is provided on the side wall of the shell (3), and the diameter of the drainage hole (31) matches the diameter of the water outlet hole (16); The water outlet hole (16) includes a first water outlet hole (17), a connecting hole (18), and a second water outlet hole (19). The first water outlet hole (17) is provided on the inner side wall of the air inlet portion (11), and the first water outlet hole (17) is communicated with the air inlet cavity (14). The second water outlet hole (19) is provided on the outer side wall of the connecting portion (13). The connecting hole (18) is provided in the middle of the side wall of the valve body (1). The connecting hole (18) sequentially crosses the air inlet portion (11), the limiting portion (12), and the connecting portion (13). The two ends of the connecting hole (18) are respectively communicated with the first water outlet hole (17) and the second water outlet hole (19). A return spring (4) is provided in the air intake cavity (14), one end of the return spring (4) is connected to the inner side wall of the air intake portion (11), and the other end of the return spring (4) is connected to the pushing portion (21).

2. The air intake and drainage valve according to claim 1, characterized in that: The connecting hole (18) is arranged along the length direction of the cavity of the valve body (1), and the center lines of the first water outlet hole (17) and the second water outlet hole (19) are both arranged perpendicular to the length direction of the cavity of the valve body (1).

3. The air intake and drainage valve according to claim 2, characterized in that: Two drainage holes (31) are symmetrically formed on the side wall of the shell (3), and two water outlet holes (16) are symmetrically formed on the side wall of the valve body (1).

4. The air intake and drainage valve according to claim 3, characterized in that: The width of the pushing portion (21) is greater than the diameter of the opening of the sealing cavity (15).

5. A gas storage cylinder, comprising a body, characterized in that: The side surface of the main body is provided with an air intake and drainage valve as described in any one of claims 1 to 4.

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