What Factors Affect the Function of the Vacuum Pump?

The factors affecting the function of the vacuum pump are mainly the effects of condensate, steam, environment, and the layout of the pump body. The Liquid Ring Vacuum Pump Manufacturer will introduce you in detail below.

1, the impact of condensate

Condensate plays a decisive role in multi-stage vacuum pumps. Condensate can sufficiently condense steam. The partial pressure of water vapor in the vacuum pump discharge pressure must be higher than its corresponding full vapor pressure, so the temperature of the condensate must be lower The full temperature under this pressure can ensure the normal operation of the pump body.

2.The effect of steam

Our commonly used vacuum pump is a steam evacuation vacuum pump, which uses over-saturated water vapor as the working medium. The condition of the steam has a decisive influence on the function of the pump. Wet steam not only affects the function of the pump, but also corrodes the steam nozzle. Adding the steam consumption of the pump makes the operation of the pump unstable.

3. Environmental impact

The environmental impact mainly refers to the pollution of the system by the pumped gas. During the processing of molten steel, the molten steel will emit a lot of gas, and at the same time, some small particles such as fine oxide scale will be sucked into the vacuum pump. Adhesion to the pump body reduces the conductance of the suction line, prolongs the suction time, and reduces the suction function of the pump. Regarding the single-stage vacuum pump, the simple wear part is the steam nozzle. After the nozzle is worn, it will not only affect the function of the pump, but also increase the operating cost of the system.

4.Why does the 2BE vacuum pump have a bad seal?

The normal 2BE Liquid Ring Vacuum Pump has a sealed part. If the seal is not good, it indicates that there is a failure. There are generally three reasons for its formation. Next, we will introduce it in detail:

Liquid Ring Vacuum Pump

(1) Excessive pressure of machine cooling water

The sealing force of the dynamic and static ring sealing surface of the machine seal is applied by the spring on the moving ring. When the cooling water pressure is too large, the water pressure will act on the static and dynamic rings. Because the static ring is fixed, the water pressure will push the dynamic ring and compress the spring in the opposite direction of the static ring, thereby weakening or canceling the dynamic and static ring surfaces. The sealing force will cause the sealing surface to leak. After the maintenance is completed, the power end machine seal is leaked with cooling water. The water inlet valve is opened below 2/3, and the machine seal is intact. When the water valve is opened more than 2/3, the machine seal leaks. The preliminary judgment is caused by the excessive water pressure. It is recommended to start the motor after repairing and use it to further track and find out the real cause of the leakage.

(2) The sealing surface of the dynamic and static ring is broken

This is the main reason for the leakage of the previous 2BE vacuum pump seal replacement. The power end and non-power end machine seals are assembled on the same shaft. The impeller is installed in the middle of the shaft. Bearings on both ends of the shaft are fixed by bearings. When the power end or non-power end machine seal is replaced separately, the bearing (bearing seat) at the corresponding end must be dismantled before removing the old machine seal and installing the new machine seal. At this time, due to the gravity of the shaft and the impeller, the bearing support at one end is lost. The impeller and shaft must fall down, and the shaft tilts towards the bearingless end. Because the static ring at one end is not fixed on the pump end cover with bolts, the dynamic ring is fixed on the shaft and rotates with the shaft. In addition, because the clearance between the inner ring of the static ring and the shaft is very small, when the shaft collapses When tilted, it causes:

A. The relative displacement of the dynamic and static ring at one end is not disassembled, so that the sealing surfaces of the dynamic and static ring are pressed against each other illegally, causing fragmentation.

B. The shaft is directly pressed on the inner ring of the static ring at the unremoved end, which causes the sealing surface of the static ring to break or break.

The above are the factors that influence the function of the vacuum pump introduced by Pressure Regulating Valve Supplier.