A pneumatic butterfly valve is composed of a butterfly valve and a pneumatic actuator. The pneumatic butterfly valve uses a circular disc that rotates with the valve to achieve the opening and closing performance. Pneumatic valves that supply operating operations are primarily used as shut-off valves. Conditioning or conditioning with a segmented valve. At present, butterfly valves are large in size and low in pressure. The use of medium-diameter pipes is increasing.
Pneumatic butterfly valve device debugging method and precautions:
First close the valve with external force. That is, rotate the valve shaft clockwise until the valve plate is in sealing contact with the valve seat. Also, keep the cylinder closed (i.e. the small groove on the cylinder shaft is perpendicular to the cylinder block; if the valve is rolled clockwise to close the valve) and attach the cylinder to the valve (parallel to the installation) or, make sure the screw holes are aligned (perpendicular to the valve body) . There is not much error. In case of misalignment, rotate the cylinder slightly before tightening the screws.
When debugging a pneumatic butterfly valve, first check whether the valve accessories, solenoid valve, muffler, etc. are installed. If it is not complete, do not debug. Guaranteed to be free of debris. The device is installed on the valve plate in the valve body before the operation, and the solenoid valve manual button is manually operated during the first test run (when the solenoid valve coil is closed during manual operation, the manual operation is useful. In the case of electronic control, the operation and manual setting are set to 0, the electric Control operation is useful, 0 position is closed valve, 1 position is the open valve, that is, the valve is open when power is on. When power is off, the valve is closed, when power is off, the valve is open, you can rotate it 180 degrees to install the solenoid valve coil) and view The operating status of the valve.
During the debugging operation, it was found that the valve was very slow at the initial position of opening, but moved quickly afterward. In this case, the valve is closed too tightly. What needs to be reduced is the cylinder stroke (replacement of the stroke adjustment screws at both ends of the cylinder must be adjusted inward at the same time. When adjusting, you need to move the valve to the open position, close the air source, and then adjust it. The adjustment valve is convenient to open and close, and can No air leaks.
The muffler is an adjustable muffler, which can adjust the opening/closing speed of the valve. The muffler should be adjusted to a suitable opening and closing speed of the valve. If the adjustment is too small, the valve may not work.
