DK28 diesel engine accessories introduces the structure principle of exhaust valve

When the water in the valve begins to fill the pipe, the plug head stays in the open position and carries out a large amount of exhaust. When the air is discharged, the water in the valve and the float ball are floated, and the plug head is driven to the closed position to stop a large amount of exhaust. When the water in the pipe is normally transported, if a small amount of air gathers in the valve to a certain extent, the water level in the valve drops, the float ball drops accordingly, and the air is discharged by the small hole. When the pump stops, the water flow in the pipe is empty or the negative pressure is generated in the pipe, the plug head is quickly opened and the air is inhaled to ensure that the pipeline is complete.

1. The exhaust valve is mainly composed of the valve body, filter screen, float ball and sealing ring.

2, the float of the exhaust valve uses low-density PPR and composite materials, which will not be deformed even if it is soaked in high temperature water for a long time. It will not cause difficulties in moving the buoy.

3, the float lever is made of hard plastic, and the connection between the lever and the float and the support is made of active connection, so it will not rust during long-term operation, causing the system to fail to work and water leakage.

4, the seal end part of the lever is supported by a spring, which can be telescoped with the movement of the lever to ensure the sealing without exhaust.

5, Marine diesel engine accessories exhaust valve should have a large exhaust volume, when the pipe empty pipe filled with water can achieve rapid exhaust recovery to normal water supply capacity in a very short time.

6. When the exhaust valve has negative pressure in the pipe, the piston should be able to open quickly and inhale a large amount of external air quickly to ensure that the pipeline will not be damaged by negative pressure. And under the working pressure, the trace air gathered in the pipeline can be discharged.

7, the exhaust valve should have a relatively high air closing pressure, and in a short time before the piston is closed, there should be enough capacity to discharge the air in the pipeline to improve the efficiency of water transmission.