Combined automatic exhaust valve for water supply pipeline

Abstract

The invention discloses a combined automatic exhaust valve for a water supply pipeline. The combined automatic exhaust valve comprises a high-speed exhaust valve and a micro exhaust valve, and is characterized in that gas exchange is carried out between the high-speed exhaust valve and the micro exhaust valve, the upper and lower ends of the high-speed exhaust valve are respectively provided with an exhaust hole, and sealed float balls are arranged in the center of the exhaust holes; the upper end of the high-speed exhaust valve is fixed with an upper cover through a bolt, the upper right end of the high-speed exhaust valve is fixed with the micro exhaust valve, and a water hammer decompression valve connector is formed at a place close to the upper part of the lower right end of the high-speed exhaust valve. By adopting a transformation streamlined design, the combined automatic exhaust valve provided by the invention is smooth to exhaust, the exhaust flow resistance can be greatly reduced, and the noise pollution can be effectively reduced by ad, opting a curved silencing design; furthermore, the combined automatic exhaust valve is good in leakproofness and high in exhaust efficiency, and is unlikely to wear, the working efficiency can be effectively improved, and the production cost can be reduced.

Description

technical field [0001] The invention relates to a valve, in particular to a combined automatic exhaust valve for a water supply pipeline. Background technique [0002] At present, in order to ensure that the gas can be automatically discharged at high speed when the water supply pipeline is flushed, the gas precipitated in the water flow can be discharged in time during the normal water supply process, thereby reducing the flow resistance and avoiding the phenomenon of pipe bursting; when the pipeline has negative pressure, it can automatically High-speed air intake prevents the occurrence of water hammer and ensures the normal operation of the pipeline; single-hole exhaust valves and micro-exhaust valves are mostly used as pipeline exhaust valves. The disadvantages are: 1. The high-speed exhaust volume is small and cannot Discharge the gas in the pipeline in time, so that the pressure of the water supply source increases and the water flow rate slows down; 2. The ai...

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Problems solved by technology

[0002] At present, in order to ensure that the gas can be automatically discharged at high speed when the water supply pipeline is flushed, the gas precipitated in the water flow can be discharged in time during the normal water supply process, thereby reducing the flow resistance and avoiding the phenomenon of pipe bursting; when the pipeline has negative pressure, it can automatically High-speed air intake prevents the occurrence of water hammer and ensures the normal operation of the pipeline; single-hole exhaust valves and micro-exhaust valves are mostly used as pipeline exhaust valves. The disadvantages are: 1. The high-speed exhaust volume is small and cannot Discharge the gas in the pipeline in time, so that the pressure of the water supply source increases and the water flow rate slows down; 2. The air valve closing pressure is small, and it is easy to cause the valve sealing phenomenon and lose the high-speed exhaust function when the air is exhausted at a high speed; 3. The water closing valve pressure 4. The sealing pairs of large and small exhaust ports are easy to change, which is easy to cause water leakage; 5. When water hammer occurs in the pipeline, the exhaust valve has no pressure relief protection, and the sealing parts are easily damaged, causing the exhaust The valve is damaged, which makes the pipeline unable to run; 6. The noise generated during high-speed exhaust is large, resulting in noise pollution; 7. The coating layer and water-immersed parts are easy to cause secondary pollution to water

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