Q:Centrifugal pumps for normal operation, is it reasonable to install valves on their inlet lines? Why?

Reasonable, no valve, how to debug, overhaulGenerally installed on imports of valves of relatively large Cv value

Q:What's the submersible pump?What is a submersible pump, and what about it?

Submersible pump is a pump directly on the water inside the pump, eliminating the water inlet pipe, eliminating the trouble of ordinary water, is very convenient, just a pool, pool, bucket, water tank water level is shallow to be able to work, meet your requirements of pumping drainage

Q:The distance from the pump button to the ground

Yellow warning pop-up, indicating that the fire control room has issued alarm information, fire alarm controller (commonly known as the alarm host)

Q:Harm of air pump and pump

Centrifugal pump situationEmpty pump is divided into two kinds, if there is no liquid, then it will cause the mechanical seal of the pump to overheat, wear and even die

Q:What are the meanings of the vacuum pump, the front pump and the main pump?

The main pump and the front pump with the general vacuum unitThe front pump can be understood as a mechanical pump. It can be used by itself, but the pumping rate or the vacuum can not meet the requirements. In this case, we add a booster pump

Q:What are the characteristics of a vertical multistage centrifugal pump?

A liquid that is primarily diluted, clean, non corrosive, explosive, or similar to water but contains no solid particles or fibers. Because of its high flow and large lift, it is widely used in fire fighting, water supply and air conditioning unit cooling water transportation in high-rise buildings.

Q:Common failure treatment of piston pump

x09x09 (3) no connecting key on pump shaft or motor shaft1) break2) missing x091) replace key2) patch keyx09x09 (4) pump internal slide vice stuck1) the clearance is too small2) parts accuracy is poor, assembly quality is poor, gear and shaft coaxial deviation is too large; plunger head clamping; blade perpendicularity difference; rotor pendulum difference is too big, rotor slot has wound or blade has scar, force after fracture and stuck

Q:What are the conditions required for hydraulic pumps to complete oil absorption and compression?

2, the change of working volume is periodic, and in each cycle, the oil absorption process is changed from small to big, and the process of oil pressure is changed from large to small;3, suction oil cavity must be separated from each other without interference.

Q:What is a positive displacement pump? He Weizheng displacement?

The principle and structure of displacement pumps are similar to those of hydraulic motors. Positive displacement is the pump outward to provide flow and pressure, that is, conventional pumps. A negative displacement pump is a hydraulic motor that rotates by external pressure and flow

Q:How about the depreciation of vacuum pumps?

(a) housing and buildings for 20 years;(two) aircraft, trains, ships, machinery, machinery and other production equipment for 10 years;