Quick exhaust valve

Abstract

The utility model discloses a quick exhaust valve which comprises a valve seat, and one side of the valve seat is communicated with a first connecting part. The other side of the valve seat is connected and communicated with a second connecting part; a valve clack is further arranged in the valve seat, communication of the first connecting part and the second connecting part is achieved through upward movement of the valve clack, and media are prevented from flowing out through the valve seat. Through downward movement of the valve clack, communication between the first connecting part and the second connecting part is blocked, and a medium in the second connecting part is guided to be discharged outwards from the valve seat. In conclusion, when the equipment is mounted on a gas circuit pipeline, the up-down movement of the valve clack is utilized to ensure that a gas source is smoothly output to a pneumatic component, and meanwhile, waste gas of the pneumatic component can be conveniently discharged outwards from the valve seat. On the basis, the device has the advantages of being small in size, convenient to use and install and worthy of application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic equipment spare parts, and specifically relates to a quick exhaust valve. Background Art

[0002] The quick exhaust valve is an important component in pneumatic control, a one-way direction control component. At present, the quick exhaust valves on the market have problems such as complex structure, high failure rate, and short service life. For example, in the prior art with the publication number CN106015638A, an air inlet and outlet are arranged on the valve body, and a valve rod is arranged inside the valve body. The valve rod moves between the air inlet and outlet to realize the switching of the air path; however, the matching accuracy between the valve rod and the valve body is required to be relatively high, and once the sealing ring is damaged or the valve rod is worn, it is extremely easy to cause difficulties in the smooth progress of the air path switching. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a quick exhaust valve to solve the problems put forward in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a quick exhaust valve, including a valve seat, one side of the valve seat is connected and communicated with a first connecting part provided, and the other side of the valve seat is connected and communicated with a second connecting part provided; a valve flap is further arranged inside the valve seat, and the first connecting part and the second connecting part are communicated by the upward movement of the valve flap, and the medium is prevented from flowing out of the valve seat; by the downward movement of the valve flap, the communication between the first connecting part and the second connecting part is blocked, and the medium in the second connecting part is guided to be discharged out of the valve seat.

[0005] As a preferred technical solution of the utility model: an installation seat is further arranged inside the valve seat, and the valve flap moves inside the installation seat.

[0006] As a preferred technical solution of the utility model: a limiting part is further arranged outside the valve seat, and is connected with the valve seat through the limiting part to limit the upward movement distance of the valve flap.

[0007] As a preferred technical solution of the utility model: a silencing piece is further arranged inside the limiting part, and is connected with the limiting part through a gasket arranged to fix the silencing piece inside the limiting part.

[0008] As a preferred technical solution of the utility model: one ends of the first connecting part and the second connecting part far away from the valve seat are connected with a connecting part provided.

[0009] As a preferred technical solution of the utility model: the connecting part is successively provided with a compression cap, a fastening sleeve, a snap ring, a sealing ring and a washer from outside to inside.

[0010] With the above technical solution, the beneficial effects of the present utility model are as follows: When the device is installed on the gas pipeline, by the up and down movement of the valve flap, while ensuring the smooth output of the gas source to the pneumatic components, it is also convenient for the waste gas of the pneumatic components to be discharged outward from the valve seat. In particular, by using the valve flap to move following the gas source to realize the switching of the gas path, firstly, mechanical wear can be reduced; secondly, the processing accuracy can be lowered; thirdly, in addition to the advantages of small volume, convenient use and installation, the service life of the device can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0012] Figure 2 is an exploded schematic diagram of the main structure of the present utility model;

[0013] Figure 3 is a cross-sectional schematic diagram of the main structure of the present utility model.

[0014] In the figure: 1, valve seat; 2, limiting member; 3, gasket; 4, silencing piece; 5, valve flap; 6, mounting seat; 7, connecting member; 8, washer; 9, sealing ring; 10, snap ring; 11, fastening sleeve; 12, compression cap; 13, first connecting portion; 14, second connecting portion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model. In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "upper surface", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model.

[0016] Please refer to Figures 1-3, an embodiment provided by the present utility model: a quick exhaust valve, including a valve seat 1, one side of the valve seat 1 is connected and communicated with a first connection part 13 provided, and the other side of the valve seat 1 is connected and communicated with a second connection part 14 provided; a valve flap 5 is further provided inside the valve seat 1, and the first connection part 13 and the second connection part 14 are communicated by the upward movement of the valve flap 5, and the medium is prevented from flowing out of the valve seat 1; by the downward movement of the valve flap 5, the communication between the first connection part 13 and the second connection part 14 is blocked, and the medium in the second connection part 14 is guided to be discharged out of the valve seat 1.

[0017] When the device is installed on the air pipeline, by using the up and down movement of the valve flap 5, while ensuring the smooth output of the air source to the pneumatic components, it is also convenient for the exhaust gas of the pneumatic components to be discharged out of the valve seat 1. In particular, by using the movement of the valve flap 5 following the air source to realize the switching of the air path, firstly, mechanical wear can be reduced; secondly, the processing accuracy can be reduced; thirdly, in addition to the advantages of small volume, convenient use and installation, the service life of the device can be extended.

[0018] Furthermore, since an installation seat 6 is also provided inside the valve seat 1, and the valve flap 5 moves inside the installation seat 6, therefore, by using the installation seat 6 to accommodate and guide the valve flap 5 to move inside it, the valve flap 5 can be guided to move in a specific direction.

[0019] Even further, since a limiting member 2 is provided outside the valve seat 1, and the limiting member 2 is connected to the valve seat 1 to limit the upward movement distance of the valve flap 5; thus enabling the valve flap 5 to complete the switching of the air path reliably and stably, and reducing the problem of incomplete air path switching caused by excessive movement of the valve flap 5 during the switching process.

[0020] Among them, the material of the valve flap 5 is preferably rubber, and the cross-section of the valve flap 5 can be set in a "V" shape. Thus, when the air source inside the first connection part 13 enters, it can cause the valve flap 5 to move upward, and during the upward movement, the contact surface between the upper end surface of the valve flap 5 and the limiting member 2 is larger, reducing the leakage of the air source. On the contrary, when the air source inside the second connection part 14 flows back, the contact area between the upper end surface of the valve flap 5 and the air source is large, so it can ensure the smooth downward movement of the valve flap 5 while reliably preventing the air flow from flowing to the first connection part 13.

[0021] In addition, since a silencing piece 4 is provided inside the limiting member 2, and the silencing piece 4 is connected to the limiting member 2 through a gasket 3 provided to fix the silencing piece 4 inside the limiting member 2, therefore, the silencing piece 4 is used to reduce the noise generated during exhaust and prevent external foreign objects from entering and polluting the exhaust valve.

[0022] Based on the above solution, one end of the first connecting portion 13 and the second connecting portion 14 away from the valve seat 1 is connected to a provided connecting member 7, so that it can be connected to a trachea through the connecting member 7, and thus it is convenient to install the device on the gas path.

[0023] Specifically, since the connecting member 7 is successively provided with a compression nut 12, a fastening sleeve 11, a circlip 10, a sealing ring 9 and a washer 8 from outside to inside, the trachea can be smoothly inserted into or pulled out from the connecting member 7. Based on this, the convenience of installing the device can be further improved.

[0024] The intake working principle of the device is as follows: When compressed air enters from port P, the valve flap 5 is pushed by the air flow through hole R, so that the valve flap 5 blocks the S hole of the limiting member 2, and the air flow flows through hole Q to components such as the cylinder.

[0025] The intake working principle of the device is as follows: When the air flow inside the cylinder needs to be discharged outward, the supply of air at port P stops, and the air flow inside the cylinder flows out through hole Q, pushing the valve flap 5, causing the valve flap 5 to be pressed tightly inside the mounting seat 6 to block the mounting seat 6; at this time, the air flow is discharged from the S hole of the limiting member 2.

[0026] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions and variations of these embodiments still fall within the protection scope of the present invention.

Claims

1. A quick exhaust valve, characterized in that: It comprises a valve seat (1), one side of the valve seat (1) being connected and communicated with a first connecting portion (13), and the other side of the valve seat (1) being connected and communicated with a second connecting portion (14); A valve flap (5) is also provided inside the valve seat (1), and the valve flap (5) moves upward to achieve communication between the first connection portion (13) and the second connection portion (14), and prevents the medium from flowing out through the valve seat (1); The valve flap (5) moves downward to block the communication between the first connection part (13) and the second connection part (14), and guides the medium in the second connection part (14) to be discharged outward from the valve seat (1).

2. A quick exhaust valve according to claim 1, characterized in that: A mounting seat (6) is also provided inside the valve seat (1), and the valve flap (5) moves inside the mounting seat (6).

3. A quick exhaust valve according to claim 2, characterized in that: A limiting member (2) is also provided on the outside of the valve seat (1) and is connected to the valve seat (1) via the limiting member (2) so as to limit the distance for the valve flap (5) to move upward.

4. A quick exhaust valve according to claim 3, characterized in that: A sound-absorbing sheet (4) is also provided inside the limiting member (2) and is connected to the limiting member (2) via a gasket (3) so as to fix the sound-absorbing sheet (4) inside the limiting member (2).

5. A quick exhaust valve according to any one of claims 1 to 4, characterized in that: One end of the first connecting portion (13) and the second connecting portion (14) away from the valve seat (1) is connected to a connecting piece (7).

6. A quick exhaust valve according to claim 5, characterized in that: The connecting piece (7) is provided with a pressing cap (12), a fastening sleeve (11), a retaining ring (10), a sealing ring (9) and a gasket (8) in sequence from the outside to the inside.

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