CN206320395U - A kind of tubule road air bleeding valve - Google Patents

Abstract

The utility model discloses a thin pipeline exhaust valve, which comprises a valve body, and the valve body is divided into an upper shell and a lower shell, and is characterized in that the outer thread on the lower part of the upper shell and the inner thread on the upper part of the lower shell Screw connection, the lower part of the lower shell is welded with a valve seat, the top of the side wall of the upper shell is connected with an exhaust pipe, the exhaust pipe extends into the valve body, and the surface of the exhaust pipe mouth extending into the valve body is a beveled surface; There is also a floating block and a sealing sheet inside the valve body. The floating block is provided with a slope corresponding to the above-mentioned oblique cut surface. One end of the sealing sheet is located at the lower end of the exhaust pipe, and the other end is connected to the upper end of the floating block. The floating block drives the sealing sheet to seal the exhaust pipe. Tracheal orifice. Under the premise of ensuring the airtightness of the exhaust valve of the thin pipeline, the utility model can realize automatic and repeated exhaust, avoiding that the floating ball type exhaust valve can not be exhausted in time due to the air support effect of the floating ball blocking the exhaust port. .

Description

A thin pipe exhaust valve

technical field

The utility model relates to an exhaust device, in particular to a thin pipeline exhaust valve.

Background technique

In recent years, water pipeline exhaust has been paid more and more attention by water hammer experts and hydraulic engineers. The gas in the pipeline generally exists in the upper part or raised section of the pipeline in the form of air pockets. There are air bags in the pipeline, which can reduce the water delivery section of the pipeline, reduce the water delivery flow, waste electric energy, or cause water hammer to damage the pipeline. For water transmission and distribution pipes with thinner pipes, float-type exhaust valves are used, but some float-type exhaust valves can exhaust at high speed only when the first section of gas or the first air bag in the pipeline is discharged, but after the first section of gas is discharged After a period of gas, the floating ball moves up to block the exhaust port on the top of the valve body. When the gas comes in again, the floating ball is difficult to open and exhaust due to the action of the air support, so that the exhaust is not timely; The ball method, but the volume and weight of the floating ball will increase, and the volume of the exhaust valve will also increase. In addition to the difficulty in meeting the requirements of the thin pipeline installation, the sealing of the exhaust valve itself is also difficult to be guaranteed. Therefore, This exhaust valve is unreliable.

Contents of the invention

The problem to be solved by the utility model is that the exhaust valve of the ordinary thin pipeline is not exhausted in time, and at the same time, the air tightness is difficult to be guaranteed.

The utility model provides a thin pipeline exhaust valve, which includes a valve body, the valve body is divided into an upper shell and a lower shell, and is characterized in that the outer thread on the lower part of the upper shell and the inner thread screw on the upper part of the lower shell Then, the lower part of the lower shell is welded with a valve seat, and the top of the side wall of the upper shell is connected with an exhaust pipe. There is also a floating block and a sealing sheet inside the body. The floating block is provided with a slope corresponding to the above-mentioned inclined surface. One end of the sealing sheet is located at the lower end of the exhaust pipe, and the other end is connected to the upper end of the floating block. The floating block drives the sealing sheet to seal the exhaust air. Nozzle. After the nozzle is closed, the top of the valve body and the floating block are not completely closed, leaving a gap. When the gas enters the exhaust valve, the water level drops. When the air pressure is too high, due to the air support effect, it is difficult for the floating ball to continue to block the exhaust port as the water level drops. However, the utility model arranges the exhaust pipe on the side wall of the valve body. The gas can reach the top of the shell along the gap between the floating block and the side wall and top of the shell, forming a top-down air pressure, which is the same as the air pressure under the floating block. The face is opened and the gas is released. With the discharge of gas, the water level rises, and the floating block moves up with the water level, thereby driving the sealing surface to seal the exhaust port; in this way, repeated exhaust can be realized.

Since the sealing sheet is repeatedly closed and opened, and in a humid environment, it is so prone to damage for a long time, thereby affecting the sealing performance of the exhaust valve, and the long-term use of the exhaust valve cannot be guaranteed. Furthermore, the utility model also includes a clamping strip inside the housing, which is detachably connected to the side wall of the lower housing, and the upper end of the clamping strip is bent to enclose the lower end of the exhaust pipe to clamp the sealing sheet. In this case, the sealing sheet can be replaced by unscrewing the upper and lower housings and removing the clamping strip, which is convenient and trouble-free, and is also beneficial to the maintenance of the exhaust valve.

Compared with the prior art, the beneficial effect of the utility model is that: on the premise of ensuring the airtightness of the air-tightness of the exhaust valve of the thin pipeline, automatic and repeated exhaust can be realized, which avoids the air-support effect of the float-type exhaust valve. The floating ball blocks the exhaust port and cannot exhaust in time.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Marked in the figure:

10. Upper housing, 11. Lower housing, 20. Exhaust pipe, 21. Valve seat, 30. Floater, 31. Sealing piece, 32. Clip.

detailed description

In order to better understand the utility model, the utility model is further explained below in conjunction with the present embodiment.

The utility model provides a thin pipeline exhaust valve, which includes a valve body, and the valve body is divided into an upper casing 10 and a lower casing 11. Screw connection, the lower part of the lower shell is welded with a valve seat 21, the top of the side wall of the upper shell is connected with an exhaust pipe 20, the exhaust pipe 20 extends into the valve body, and the surface of the exhaust pipe mouth extending into the valve body It is a beveled surface; inside the valve body, there is also a floating block 30 and a sealing piece 31, and the floating block 30 is provided with an inclined surface corresponding to the above-mentioned beveled surface; the inside of the valve body also includes a clip 32, which is detachably connected to the lower shell On the side wall, the upper end of the clip 32 is bent to enclose the lower end of the exhaust pipe to clamp the sealing sheet 31, and the other end is connected to the upper end of the floating block 30, and the floating block floats up to drive the sealing sheet to seal the nozzle of the exhaust pipe. Gaps are left between blocks.

When the gas passes into the shell, the liquid level drops, the float drops with the liquid level, the valve opens, and the gas is discharged from the exhaust pipe; as the gas discharge liquid level rises, the floating ball rises at this time, driving the sealing piece to close the valve Exhaust pipe; this action will repeat as the liquid increases and decreases.

The foregoing embodiments are only preferred embodiments, and are not intended to limit the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. All equivalent changes and modifications made according to the content of the patent scope of the utility model should be regarded as the technical category of the utility model.

Claims (2)

1. A thin pipeline exhaust valve, comprising a valve body, the valve body is divided into an upper casing and a lower casing, and is characterized in that the external thread at the bottom of the upper casing is screwed with the internal thread at the top of the lower casing, The lower part of the lower shell is welded with a valve seat, and the top of the side wall of the upper shell is connected with an exhaust pipe. The exhaust pipe extends into the valve body. There is also a floating block and a sealing sheet. The floating block is provided with a slope corresponding to the above-mentioned inclined section. One end of the sealing sheet is located at the lower end of the exhaust pipe, and the other end is connected to the upper end of the floating block. The floating block drives the sealing sheet to seal the exhaust pipe. mouth. 2. The thin-pipe exhaust valve according to claim 1, characterized in that the inside of the valve body also includes a clip, the clip is detachably connected to the side wall of the lower housing, and the upper end of the clip is bent to surround the lower end of the exhaust pipe Snap the seal.