Structure for controlling one-way flow of air in air supply unit

Abstract

The utility model relates to the technical field of one-way air valves, in particular to a structure for controlling one-way flow of air of an air supply unit, which comprises a bottom valve body, a round valve cavity is arranged inside the bottom valve body, an exhaust round hole is arranged on the bottom valve body, and a sealing flange is arranged at the edge of the upper end of the bottom valve body. A sealing flange is arranged on the bottom valve body, a blocking valve plate is detachably installed on the inner side of the sealing flange, a movable elastic piece is arranged on the blocking valve plate, an exhaust ring groove is formed in the blocking valve plate, and a top valve body is fixedly installed on the bottom valve body. The bottom valve body, the plugging valve plate and the top valve body are arranged, the bottom valve body serves as a main body structure, other components are all installed based on the bottom valve body, the structure is compact and exquisite, the use performance can be met, meanwhile, the manufacturing cost is controlled to be the lowest, and the service life is prolonged. The gas one-way flow cut-off structure and the pressing part of the air supply unit are combined together, so that the assembly space is saved, and the difficulty of the assembly process can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of one-way valves, in particular to a structure for controlling the one-way flow of gas in an air supply unit. Background Technique

[0002] With the use of pneumatic products, the use of one-way cut-off structures in gas circuits has gradually increased. In a closed air supply unit, in order to enable the gas to flow unidirectionally during the pressure boosting process of a plunger pump structure and at the same time present the simplest assembly with the pressure boosting cylinder barrel, a gas one-way cut-off mechanism is usually used.

[0003] In the prior art, traditional gas one-way cut-off structures often serve as intermediate conversion elements, added in the gas circuit or connected separately to the gas pipe, and cannot be used in the pressure boosting structure of a closed air supply unit. Not only is the matching compliance poor, but also the assembly process is complex and the cost is high. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a structure for controlling the one-way flow of gas in an air supply unit, solving the technical problems that the one-way cut-off structure in the prior art cannot meet the spatial layout of the air supply unit, has poor matching compliance, and high assembly cost. It has the advantages of being able to combine the gas one-way flow cut-off structure with the pressure boosting part of the air supply unit, saving assembly space, and effectively reducing the difficulty of the assembly process.

[0005] To solve the above technical problems, the utility model provides the following technical solution: A structure for controlling the one-way flow of gas in an air supply unit, including a bottom valve body. A circular valve cavity is opened inside the bottom valve body. An exhaust round hole is opened on the bottom valve body. A sealing flange is provided at the edge of the upper end of the bottom valve body. A plugging valve piece is detachably installed inside the sealing flange. A movable elastic piece is provided on the plugging valve piece. An exhaust ring groove is opened on the plugging valve piece. A top valve body is fixedly installed on the bottom valve body. The inner side of the top valve body matches the sealing flange. Initially, the movable elastic piece is in contact with the bottom valve body, and at this time the exhaust round hole is in a plugged state. When the air pressure inside the circular valve cavity increases, the movable elastic piece will release the plugging effect on the exhaust round hole under the action of the air pressure.

[0006] Preferably, a riveting round hole is opened on the top valve body. The bottom of the top valve body is in contact with the bottom valve body and is riveted together by a rivet.

[0007] Preferably, the contact surface between the bottom valve body and the plugging valve piece is flat and smooth, so as to ensure the airtightness of reverse cut-off and avoid air leakage.

[0008] Preferably, the edge of the plugging valve piece is located between the bottom valve body and the top valve body, and the bottom valve body and the top valve body are riveted together, which can press the edge of the plugging valve piece to ensure the fixed position of the plugging valve piece.

[0009] Preferably, a plurality of hollow air grooves are formed through the surface of the top valve body, which can not only increase the outflow of air flow, but also increase the area of gas reverse sealing.

[0010] Preferably, a plurality of groups of riveting round holes are equidistantly arranged along the circumferential direction of the top valve body, which can effectively ensure the installation strength of the top valve body and prevent the top valve body from being ejected by the air flow.

[0011] By means of the above technical solutions, the present utility model provides a structure for controlling the unidirectional flow of gas in an air supply unit, which at least has the following beneficial effects:

[0012] 1. By setting the bottom valve body, the plugging valve piece and the top valve body, the bottom valve body is used as the main structure, and the other components are all installed based on the bottom valve body. The structure is compact and delicate, which can control the manufacturing cost to the lowest while meeting the use performance. Moreover, the gas unidirectional flow cut-off structure is combined with the pressurizing part of the air supply unit, saving the assembly space and effectively reducing the difficulty of the assembly process.

[0013] 2. By setting the movable elastic piece and the top valve body, the size of the opening pressure is limitedly controlled by the movable elastic piece. Moreover, during the deformation process of the movable elastic piece, the top valve body presses and limits the plugging valve piece, so as to ensure that the plugging valve piece will not have large deformation, and can effectively ensure the fatigue durability of the plugging valve piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0015] Figure 1 is a cross-sectional view of the overall structure of the present utility model;

[0016] Figure 2 is an exploded view of the overall structure of the present utility model;

[0017] Figure 3 is a structural diagram of the bottom valve body in the present utility model;

[0018] Figure 4 is a schematic diagram of the valve piece structure in the present utility model;

[0019] Figure 5 is a structural diagram of the top valve body in the present utility model.

[0020] In the figure: 1. Bottom valve body; 2. Circular valve cavity; 3. Exhaust round hole; 4. Sealing flange; 5. Plugging valve disc; 6. Movable spring piece; 7. Exhaust ring groove; 8. Top valve body; 9. Riveting round hole; 10. Hollow air groove. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1

[0023] According to Figures 1-5 As shown, a structure for controlling the unidirectional flow of gas in an air supply unit includes a bottom valve body 1. A circular valve cavity 2 is opened inside the bottom valve body 1. An exhaust round hole 3 is opened on the bottom valve body 1. A sealing flange 4 is provided at the edge of the upper end of the bottom valve body 1. A plugging valve disc 5 is detachably installed inside the sealing flange 4. The contact surface between the bottom valve body 1 and the plugging valve disc 5 is flat and smooth, so as to ensure the airtightness of reverse cutoff and avoid air leakage. A movable spring piece 6 is provided on the plugging valve disc 5. An exhaust ring groove 7 is opened on the plugging valve disc 5. A top valve body 8 is fixedly installed on the bottom valve body 1. The edge of the plugging valve disc 5 is located between the bottom valve body 1 and the top valve body 8. The bottom valve body 1 and the top valve body 8 are riveted together, which can press the edge of the plugging valve disc 5, so as to ensure the fixed position of the plugging valve disc 5. A riveting round hole 9 is opened on the top valve body 8. The bottom of the top valve body 8 is in contact with the bottom valve body 1 and is riveted together by a rivet. The inner side of the top valve body 8 matches the sealing flange 4. Initially, the movable spring piece 6 is in contact with the bottom valve body 1, and at this time the exhaust round hole 3 is in a plugged state. When the air pressure inside the circular valve cavity 2 increases, the movable spring piece 6 will release the plugging effect on the exhaust round hole 3 under the action of the air pressure. A plurality of groups of riveting round holes 9 are equidistantly arranged along the circumferential direction of the top valve body 8, which can effectively ensure the installation strength of the top valve body 8 and avoid the top valve body 8 being pushed out by the air flow.

[0024] Specifically, a plurality of hollow air grooves 10 penetrate through the surface of the top valve body 8, which can not only increase the outflow of the air flow, but also increase the area of gas reverse sealing.

[0025] In this embodiment, the bottom valve body 1 serves as the main support structure, and the remaining parts are all carried by the bottom valve body 1. The plugging valve disc 5 serves as the sealing structure and is in close contact with the bottom valve body 1 without being stressed. At this time, the exhaust round hole 3 is in a plugged state.

[0026] When the air supply unit starts to move, the air pressure intensity inside the circular valve cavity 2 gradually increases and acts on the movable elastic piece 6 through the exhaust round holes 3. Next, the movable elastic piece 6 deforms and releases the blockage of the exhaust round holes 3. Subsequently, the gas enters the other side of the blocking valve piece 5 through the exhaust annular groove 7.

[0027] When the air supply unit stops moving, the pressed gas acts on the blocking valve piece 5 in the reverse direction, causing the movable elastic piece 6 to quickly fit tightly with the bottom valve body 1 again to form a sealing effect.

[0028] Moreover, the top valve body 8 plays a role in limiting and fixing, and is riveted to the bottom valve body 1 by rivets, which can press and limit the edge of the blocking valve piece 5, ensuring that the blocking valve piece 5 will not be greatly deformed, thereby extending the service life of the blocking valve piece 5.

[0029] In this embodiment, by setting the bottom valve body 1, the blocking valve piece 5 and the top valve body 8, the bottom valve body 1 is used as the main structure, and the rest of the components are installed based on the bottom valve body 1. The structure is compact and delicate, which can control the manufacturing cost to the lowest while meeting the use performance. Moreover, by combining the gas one-way flow cut-off structure with the pressurizing part of the air supply unit, the assembly space is saved, and the difficulty of the assembly process can be effectively reduced; in addition, in this embodiment, by setting the movable elastic piece 6 and the top valve body 8, the size of the opening pressure is limitedly controlled by the movable elastic piece 6. Moreover, during the deformation process of the movable elastic piece 6, the top valve body 8 presses and limits the blocking valve piece 5, ensuring that the blocking valve piece 5 will not be greatly deformed, and effectively ensuring the fatigue durability performance of the blocking valve piece 5.

[0030] The control mode of the present utility model is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common knowledge in the art. And the present utility model is mainly used to protect mechanical devices, so the control mode and circuit connection of the present utility model will not be further explained in detail.

[0031] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A structure for controlling the unidirectional flow of gas in an air supply unit, comprising a bottom valve body (1), a circular valve cavity (2) being provided inside the bottom valve body (1), characterized in that: The bottom valve body (1) is provided with an exhaust circular hole (3), the edge of the upper end of the bottom valve body (1) is provided with a sealing flange (4), the inner side of the sealing flange (4) is detachably provided with a blocking valve plate (5), the blocking valve plate (5) is provided with a movable spring plate (6), the blocking valve plate (5) is provided with an exhaust ring groove (7), the bottom valve body (1) is fixedly provided with a top valve body (8), the inner side of the top valve body (8) matches the sealing flange (4).

2. A structure for controlling the one-way flow of gas in an air supply unit according to claim 1, characterized in that: The top valve body (8) is provided with a riveted circular hole (9).

3. The structure for controlling the one-way flow of gas in an air supply unit according to claim 1, characterized in that: The contact surface between the bottom valve body (1) and the blocking valve plate (5) is flat and smooth.

4. The structure for controlling the one-way flow of gas in an air supply unit according to claim 1, characterized in that: The edge of the blocking valve plate (5) is located between the bottom valve body (1) and the top valve body (8).

5. The structure for controlling the one-way flow of gas in an air supply unit according to claim 1, characterized in that: A plurality of hollow air grooves (10) are formed through the surface of the top valve body (8).

6. The structure for controlling the one-way flow of gas in an air supply unit according to claim 2, characterized in that: The riveted circular holes (9) are arranged in a plurality of groups at equal intervals along the circumferential direction of the top valve body (8).

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