Lead to water ring vacuum pump mechanical seal leakage of the three reasons -

water ring vacuum pump with fixed blade of eccentric rotor, water ( Liquid) Be left to the walls of the stator where water ( Liquid) Formation and stator concentric rings of liquid liquid ring and the rotor blade together to form the rotation of the variable displacement variable volume pump.

1. Water ring vacuum pump mechanical seal assembly improper

change when the power the confidential letter, found the power ring sealing o-ring installed in the process of removal is not correct. O ring ring seat should have been installed in the activities of the seal groove. But, remove the inspection found that the o-ring is not installed, but is installed on the spring piece is not correct, cause the spring deformation, completely unable to have the effect of the axial static seal, lead to leakage.

2, water ring pump seal cooling water pressure machine

mechanical seal ring and static ring sealing surface of the binding force of the ring on the spring clamp. When the cooling water pressure is too high, the water pressure will effect on the static ring and ring. Due to the static ring is fixed, the pressure will push ring and with static compression spring on the ring in the opposite direction, so as to weaken or offset static binding force on the surface of the ring and ring, lead to leak sealing surface. After repair, cooling water was injected to the power end sealing machine leakage test. The inlet valve open less than two-thirds, sealing machine in good condition without any leakage. When the water valve to open more than two-thirds, machine seal leakage. Preliminary judgment is due to the cause of the water pressure is too large. Proposed motors can be started after the maintenance and use, to further track and find out the real reason for leakage.

3, water ring vacuum pump of dynamic and static ring sealing surface rupture

this is several times before the main reason for the replacement water pump seal leakage. Power side and the power and mechanical seal assembly on the same shaft, impeller installed in the middle of the shaft, the shaft is supported by bearings and fixed on both ends. When change the power end alone or when the power end of mechanical seal, you must first remove the corresponding end bearing ( Bearing) , and then you can remove the old mechanical seal and install the new mechanical seal. At this time, due to the gravity of the shaft and impeller, lose bearing support at one end of the impeller and shaft will inevitably collapse down, axis inclination will be to have no bearing on. Due to not remove the static ring bolted on the pump cover, ring fixed on the shaft with the axis of rotation, in addition, due to the static ring gap between inner ring and the shaft is very small, when important officials fell to tilt, cause:

A and static ring and ring without disassembly the relative displacement in the static ring and ring sealing surface illegal extrusion, cause fracture;

b。 Shaft without disassembly side pressure directly on the static ring's inner circle, lead to the static ring sealing surface rupture or fracture.