Quick exhaust valve is suitable for pipelines where the industrial medium is water. It is used as a device to quickly remove gas in the pipeline to improve the efficiency of water transportation equipment. It is an essential equipment for pipelines and protects them from deformation and rupture. The valve is a barrel-shaped valve body, which mainly contains a stainless steel float ball and a plug. Installed at the outlet of the pump or in the water supply and distribution pipeline, it is used to remove a large amount of accumulated air in the pipeline to improve the efficiency of water pipes and water pumps. Once negative pressure occurs in the pipe, this valve can quickly suck in air to preserve it. The line is damaged due to negative pressure.
How the quick exhaust valve works
The rapid exhaust valve uses the buoyancy characteristic principle of water on the stainless steel float. When the water level in the exhaust valve rises, while exhausting, the float is affected by the buoyancy of the water. , automatically float until it contacts the sealing surface of the exhaust port. When the pressure reaches a certain level, the ball will automatically close. When the water level in the valve decreases, the ball will fall with the water level. At this time, a large amount of air will be injected into the pipe through the exhaust port. , after being installed on the pipe, it uses the inertia of water on the float to automatically open/close the exhaust port.
When the pipeline is running, the float stops at the bottom of the ball bowl and exhausts a large amount of air. When the air in the pipe is exhausted, water rushes into the valve, passes through the ball bowl and then reacts with the float. , causing the float ball to float closed. During normal operation of the pipeline, if a small amount of gas is concentrated in the valve to a considerable extent, the water level in the valve will drop, the float ball will drop accordingly, and the gas will be discharged from the small hole. If the water pump stops, negative pressure will be generated at any time, the float will drop at any time, and a large amount of air will be sucked to ensure the safety of the pipeline.
In the exhaust state, the float pulls down one end of the lever due to gravity. At this time, the lever is in an inclined state, and a gap appears in the contact part between the lever and the exhaust hole, and the air It is discharged from the exhaust hole through this gap. As the air is discharged, the water level rises. The buoy floats upward under the buoyancy of the water. The sealing end face on the lever gradually presses against the exhaust hole until the entire exhaust hole is completely blocked. Live, the exhaust valve is completely closed at this time.
Quick exhaust valve It has three valve ports, which are represented by the letters P, A, and T respectively. P is connected to the air source, A is connected to the actuator, and T is connected to the atmosphere. When there is compressed air input to P, push the valve core to move to the right, and P and A are connected to supply air to the actuator;when P does not have compressed air input, the gas in the actuator passes through A to move the valve core to the left, blocking P and A. A channel, open the A and T channels at the same time, and the gas will be discharged quickly through T. Quick exhaust valve is included in Kuaiyou Automation Selection. The rapid exhaust valve is often installed between the reversing valve and the cylinder, so that the exhaust gas from the cylinder can be quickly discharged without passing through the reversing valve. This speeds up the reciprocating motion of the cylinder and shortens the working cycle.
Application scope of quick exhaust valve
Quick exhaust valve
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