Emptying valve capable of changing gas flow direction

Abstract

The invention discloses an emptying valve capable of changing the gas flow direction. The emptying valve comprises a valve body, wherein an air inlet is formed in one end of the valve body, an installation opening is formed in the other end of the valve body, and an air outlet is formed in the outer wall of the valve body; the inner wall of the valve body at the air inlet is welded with one end ofan air inlet pipe; an end cover is installed on the installation opening, an elastic element is sleeved with the inner wall of the installation opening, and the bottom of the closed end of the elastic element is pressed at the other end of the air inlet pipe; one end of the air inlet pipe is sleeved with the outer wall of the valve body at the air inlet, and the other end of the air inlet pipe issleeved with one side of the end cover; a normally closed solenoid valve is installed on the air inlet pipe, an exhaust pipe is sleeved with the other side of the end cover, and a normally open solenoid valve is installed on the exhaust pipe; and an air outlet pipe is fixedly installed at the air outlet. When a machine stops, the elastic element is under normal pressure, the elastic element is jacked up after high pressure gas enters the air inlet pipe, and the high pressure gas is discharged from the air outlet pipe; when the machine runs, the intensity of pressure inside the air inlet pipeis equal to the intensity of pressure of an inner cavity of the elastic element, the elastic element is pressed on the air inlet pipe, the air inlet pipe is separated from the air outlet, and the highpressure gas operates normally.

Description

technical field [0001] The invention relates to the technical field of venting valves, in particular to a venting valve that can change the flow direction of gas. Background technique [0002] The vent valve can discharge the pressurized gas through it when it is not working or in an emergency to avoid other accidents. The existing vent valve adjusts the pressure of the pipeline through the pressure of the spring, and the elastic force of the spring is fixed. This kind of vent valve can only be used in the case of high pressure, which is relatively simple, so that the gas under pressure cannot be completely discharged under the non-working state of the machine, and the spring must be installed with the air inlet of the gas. Concentric, it must be installed by an experienced master. When there are bumps during normal transportation, the eccentricity of the spring will occur. It needs to be disassembled and assembled again on site. For this reason, we propose a method that can...

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