CN204387419U - Large air displacement outlet valve - Google Patents

Abstract

The utility model discloses a large-displacement exhaust valve, which comprises a valve body, a valve cover on which an exhaust pipe is arranged, and an upper buoy and a lower buoy arranged inside the valve body so as to float up and down. A guiding mechanism is provided between the side walls of the buoy and the lower buoy and the inner wall of the valve body. The upper buoy and the lower buoy are connected by matching T-shaped grooves and T-shaped blocks. The depth of the T-shaped grooves is greater than that of the The height of the T-block. The utility model adopts the design of linked double buoys and the design of light upper buoys. When exhausting, the two buoys are located at the bottom, which can ensure a large amount of exhaust gas. When the liquid enters the valve body, only the lower buoys When in contact with the liquid, the whole body rises slowly while maintaining exhaust. When the liquid level continues to rise to the upper buoy, because the upper buoy is lighter, it can float quickly and use the height difference between the T-shaped groove and the T-shaped block to achieve detachment The lower buoy is sealed.

Description

Large displacement exhaust valve

technical field

The utility model relates to the technical field of automatic exhaust valves, in particular to an exhaust valve with a large displacement.

Background technique

The principle adopted by the exhaust valve is that when there is gas overflowing in the system, the gas will climb up along the pipeline and finally gather at the highest point of the system, and the exhaust valve is generally installed at the highest point of the system. The valve cavity of the gas valve is gathered on the upper part of the exhaust valve. As the gas in the valve increases, the pressure rises. When the gas pressure is greater than the system pressure, the gas will cause the water level in the cavity to drop, and the buoy will drop with the water level to open the exhaust port; After the gas is exhausted, the water level rises, and the buoy rises accordingly, closing the exhaust port. In the same way, when negative pressure is generated in the system, the water level in the valve chamber drops, and the exhaust port opens. Since the external atmospheric pressure is higher than the system pressure at this time, the atmosphere will enter the system through the exhaust port to prevent the harm of negative pressure.

The existing exhaust valve has the following problems: when the air pressure is too high, air blocking occurs; if the floating weight is increased, a high water pressure is required to achieve water sealing, and liquid leakage is likely to occur.

Utility model content

The purpose of the utility model is to provide a large displacement exhaust valve aiming at the technical defects existing in the prior art.

The technical scheme adopted for realizing the purpose of this utility model is:

A large displacement exhaust valve, comprising a valve body, a valve cover on which an exhaust pipe is arranged, and an upper buoy and a lower buoy that can float up and down inside the valve body, the upper buoy and the lower buoy A guide mechanism is provided between the side wall and the inner wall of the valve body. The upper buoy and the lower buoy are connected through a matching T-shaped slot and a T-shaped block. The depth of the T-shaped slot is greater than that of the T-shaped block. high.

The bottom of the exhaust pipe is provided with a mouth protruding from the valve cap, and the upper surface of the upper buoy is provided with a sealing gasket corresponding to the mouth.

The T-shaped block is integrally arranged at the center of the upper surface of the lower buoy, and the T-shaped slot is integrally arranged at the lower surface of the upper buoy.

The T-shaped slot is integrally arranged at the center of the upper surface of the lower buoy, and the T-shaped block is integrally arranged at the lower surface of the upper buoy.

The guide mechanism is a guide groove guide block mechanism arranged between the side walls of the upper buoy and the outer buoy and the inner wall of the valve.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model adopts the design of linked double buoys and the design of light upper buoys. When exhausting, the two buoys are located at the bottom, which can ensure a large amount of exhaust gas. When the liquid enters the valve body, only the lower buoys When in contact with the liquid, the whole body rises slowly while maintaining exhaust. When the liquid level continues to rise to the upper buoy, because the upper buoy is lighter, it can float quickly and use the height difference between the T-shaped groove and the T-shaped block to achieve detachment The lower buoy is sealed.

Description of drawings

FIG. 1 is a schematic structural view of a large displacement exhaust valve of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Fig. 1, the large displacement exhaust valve of the present invention includes a valve body 1, a valve cover 2 on which an exhaust pipe 3 is arranged, a valve cap 4 arranged on the upper end of the exhaust pipe, and a ground that can float up and down. The upper buoy 5 and the lower buoy 6 are arranged inside the valve body. A guide mechanism is provided between the side wall of the upper buoy and the lower buoy and the inner wall of the valve, such as a guide groove guide block mechanism. The upper buoy and the lower buoy pass through Cooperating T-shaped slot 7 and T-shaped block 8 connect described T-shaped slot 7 and T-shaped block 8 and arrange along the center line or central axis respectively, and the depth of described T-shaped slot is greater than that of described T-shaped block high. Wherein, the bottom of the exhaust pipe is provided with a mouth protruding from the valve cap, and the upper surface of the upper buoy is provided with a sealing gasket 9 corresponding to the mouth, and the upper buoy and the valve cover are used to keep a distance. The sealing design can effectively ensure the airtightness and improve the stability.

The utility model adopts the design of linked double buoys and the design of light upper buoys. When exhausting, the two buoys are located at the bottom, which can ensure a large amount of exhaust gas. When the liquid enters the valve body, only the lower buoys When in contact with the liquid, the whole body rises slowly while maintaining exhaust. When the liquid level continues to rise to the upper buoy, because the upper buoy is lighter, it can float quickly and use the height difference between the T-shaped groove and the T-shaped block to achieve detachment The lower buoy is sealed.

Specifically, the T-shaped block is integrally arranged at the center of the upper surface of the lower buoy, the T-shaped groove is integrally arranged at the lower surface of the upper buoy, or the T-shaped groove is integrally arranged at the center of the upper surface of the lower buoy, The T-block is integrally arranged on the lower surface of the upper buoy. The cooperation between the T-shaped groove and the block is convenient for processing. While the two are linked together, a certain amount of activity is used to effectively balance the demand between the exhaust volume and the sealing water pressure. The exhaust volume is large, There is no air blocking phenomenon, which improves the low pressure air seal and reduces the low water pressure seal value.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these Improvement and retouching should also be regarded as the protection scope of the present utility model.

Claims (5)

1. A large displacement exhaust valve is characterized in that it comprises a valve body, a valve cover on which an exhaust pipe is arranged, and an upper buoy and a lower buoy that can float up and down inside the valve body. A guiding mechanism is provided between the side walls of the upper buoy and the lower buoy and the inner wall of the valve body. The upper buoy and the lower buoy are connected by matching T-shaped grooves and T-shaped blocks. The depth of the T-shaped grooves is greater than the The height of the T-block described above. 2. The large displacement exhaust valve according to claim 1, characterized in that, the bottom of the exhaust pipe is provided with a mouth protruding from the valve cap, and the upper surface of the upper buoy is provided with a The gasket corresponding to the mouth described above. 3. The large displacement exhaust valve according to claim 1, wherein the T-shaped block is integrally arranged at the center of the upper surface of the lower buoy, and the T-shaped groove is integrally arranged at the lower surface of the upper buoy . 4. The large displacement exhaust valve according to claim 1, wherein the T-shaped groove is integrally arranged at the center of the upper surface of the lower buoy, and the T-shaped block is integrally arranged at the lower surface of the upper buoy . 5. The exhaust valve with large displacement according to claim 1, characterized in that, the guide mechanism is a guide groove guide block mechanism arranged between the side walls of the upper buoy and the outer buoy and the inner wall of the valve.