Q:Advantages and disadvantages of centrifugal pumps?

Centrifugal pump; advantages and disadvantages:(1) advantages:The structure of the pump is simple and compact, and the centrifugal pump has small area, light weight, little material consumption and high cost for the foundation. Therefore, the cost of manufacturing and installation is less.For high speed operation, the 2 pole or 4 pole motor can be directly connected. The drive structure is simple and easy to install.

Q:Significance of water pump model ISO50-160

A pump is a machine that transports liquids or pumps liquids. It will be the prime mover of the mechanical energy or other external energy transfer to the liquid, the liquid energy increase, mainly used to transport liquids including water, oil, alkali liquid, emulsion, suspension emulsion and liquid metal, but also transport liquid, gas mixtures and liquids containing suspended solids. Pump performance parameters include flow, suction, lift, shaft power, water power, efficiency and so on;

Q:Why does the centrifugal pump close the pressure to start?

The flow is zero (i.e. off dead) minimum, the highest lift power; with the outlet valve opening increases, flow increases, the lift, power and efficiency are increased, the maximum value (usually in the vicinity of the highest rated flow point)

Q:I live on the 8 floor. Often there is no water. Life is very inconvenient. What kind of pump do I have to install? What should I pay attention to when I buy it? What's the pump for that brand? Should it be installed in that position?

(8) check the suitability of the foundation and whether the size of the foundation corresponds to the size of the pump.(9) find the position of positive pump and motor, pump set and anchor bolt and the inlet and outlet flanges, to ensure that the flange torque of the pump conforms to the standard. Check the inlet and outlet piping before alignment. Make sure the weight of the inlet and outlet pipe does not exert force or torque on the pump. When looking for, should also pay attention to eliminate the pump rotor movement, so as to avoid the end gap error. If checked after the pump is working, it should be carried out under cold condition. It is important to draw attention to the fact that the pump set of the complete set of factory is only rough looking (checked with a ruler) when it is shipped. It may cause displacement when it is transported.

Q:Why does the centrifugal pump start and close first when the outlet valve is closed?

The contact is burned out, the bond and so on the accident, therefore closes the outlet valve, starts the electric machinery, at this time the electric machinery belongs to the no-load current movement, greatly reduces the big current impact

Q:What is the difference between centrifugal pump and rotary vane pump? What are the distinctive characteristics or principles of rotary and centrifugal? O (a _ U) O thank you!

Directly said vane pump on the line, generally do not say rotary vane pump.The centrifugal pump is divided according to the direction of the liquid flow in the impeller

Q:Hydraulic pump displacement refers to the pump shaft what?

Just as you carry a spoon to the water. How much water can you pump at once (every turn)? That's the displacement.

Q:Why can't the inlet of centrifugal pump be negative pressure?

The entrance can be a negative pressure. You can often see someone pumping water from the pool. How can you pump water if it is not negative pressure?

Q:Does vacuum pump oil belong to dangerous goods?

Is the grease inside? How could it be dangerous goods? Absolutely not!

Q:The suction pump has a nominal suction range of 30 metersHow deep can a well be sucked?Well, sixteen meters,

A standard atmospheric pressure can be 10.33 meters to 30 meters of water, suction is atmospheric pressure there are three standard atmospheric pressure so high? This is impossible in general, remove the vaporization removed 0.5 meters critical yo,