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How the diaphragm pump regulates flow and diaphragm pump repair

October 12, 2022

Diaphragm pump flow adjustment is based on the rotation adjustment mechanism to adjust the piston stroke to adjust. The principle is: rotation adjustment mechanism handwheel (you can see the position of the dial on the change), through the adjustable shaft and slide shaft axial transformation, the movement through the slide shaft on the chute into the eccentric radial Displacement, through the connecting rod to promote the piston, due to changes in piston stroke, so as to achieve the purpose of flow control.

Diaphragm pump maintenance and other types of pumps are different, the main points are as follows:
1, check the valve should pay attention to aging deformation of the seal ring, the spring is to reduce the seriousness of the spring, the valve port and the valve there is no wear, corrosion and other defects, the valve should be installed with the pump body flange surface level, can not be recessed;
2, the diaphragm replacement, disassembly pump head should be lifted in advance to prevent the fall damage;
3, the adjustment mechanism disassembly to calibrate the length of the stroke position (stroke length of 5mm), remove the scale seat, slide the scale ring into the calibration position, the measured stroke length should be exactly the same scale;
4, when the piston is disassembled, use a special pointed tool to remove the packing ring from its slot, taking care not to damage the ring slot;
5, Worm wheel to be checked, the teeth should be intact, there should be no cracks or broken teeth, the installation to check the engagement conditions.

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