Pressure air intake and exhaust volume amplifying structure of exhaust valve

Abstract

The invention discloses a pressure air intake and exhaust volume amplifying structure of an exhaust valve. The pressure air intake and exhaust volume amplifying structure comprise a valve shaft and a valve body, wherein the top of the valve body is provided with an opening, a guide seat is arranged above the valve body, the opening part at the top of the valve body is provided with a self sealing structure, a diaphragm structure is fixedly arranged in the valve body, the head end of the valve shaft is glidingly connected with the guide seat, in addition, the self sealing structure and the diaphragm structure are coaxially and fixedly arranged on the valve shaft, a pressure balance cavity is formed between the diaphragm structure and the lower part of the valve body, a pressure cavity is formed between the diaphragm structure and the upper part of the valve body, a large air intake and exhaust opening of the exhaust valve is arranged in the pressure cavity, a small air intake and exhaust opening and pressure release micropores are arranged in the pressure balance cavity, the cross section area of the small air intake and exhaust opening of the exhaust valve is greater than the cross section area of the pressure release micropores, and the acting area of the diaphragm structure is greater than the sealing area of the self sealing structure. The pressure air intake and exhaust volume amplifying structure has the advantages that through pressure difference conversion, the effective amplification of the air intake and exhaust volume is realized, the guide deviation and the scale formation jam are avoided, the pressure conversion reliability is extremely high, the manufacturability is good, the size of the exhaust valve can be effectively reduced, and the production cost is reduced.

Description

technical field [0001] The invention relates to pipeline supporting equipment, in particular to an exhaust valve with a pressure-intake and exhaust-volume amplifying structure. Background technique [0002] The exhaust valve is used in independent heating systems, central heating systems, heating boilers and other pipeline exhaust. When the gas enters the inner chamber of the exhaust valve and gathers on the upper part of the exhaust valve, as the gas in the valve increases, the pressure rises. When the gas When the pressure is greater than the system pressure, the gas will cause the water level in the cavity to drop, and the exhaust port of the exhaust valve will open; after the gas is exhausted, the water level will rise, and the exhaust port will close; similarly, when negative pressure is generated in the system, the inner chamber of the exhaust valve will The water level drops and the exhaust port opens. Since the external atmospheric pressure is greater than the system...

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Problems solved by technology

[0003] At present, due to design limitations of exhaust valves and micro-exhaust valves, the size of the exhaust port is small, and there are often difficulties in pressing in and exhausting, and the intake and exhaust volume is small; the intake and exhaust capacity of the exhaust valve is affected by the pipeline pressure. Defects such as large volume of exhaust valve

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