How to choose the screw vacuum pump? - - - - - -

screw vacuum pump by its ability to work with the independent variable transport, naturally aspirated, reversal, can transport the liquid containing solid particles and other characteristics, in sewage treatment station, the common used in the transport of water, wet mud and coagulant liquid level. Screw pump selection should follow the economic development, effective and standard by the spectrum. If owe to consider design scheme selection model, after will give the application of inconvenience, management methods and maintenance, so choose a must according to the specific manufacturing, effective of screw pump can not only ensure production running smoothly, and can reduce maintenance costs.

a, the speed of the screw vacuum pump selection

the total capacity of the screw vacuum water pump speed linearly related, the relativity of screw pump in low speed, high speed of the screw pump can improve the total flow and pump head, but the output power expanded significantly, high speed to speed up the friction coefficient between the motor rotor and stator, can make the screw pump too early is invalid, and the high speed of the screw pump motor rotor length is very short, easily damaged, thus reducing the use of screw pump.

according to slow down or speed tissue to reduce speed, make its speed at three hundred revolutions per minute (the category of the following is more effective compared with speed of screw pump, the life can give rise to several times.

2, the quality of the screw vacuum pump

now sell in the market for the type of screw vacuum pump is more, relatively speaking, the import of screw pump design effective, exquisite material, but the price is higher, the service project level not in time, spare parts cost is high, the order time is long, will be harm to manufacture all the normal operation. Chinese manufacturing most of the counterfeit imports, product quality is uneven, when choosing China manufacturing goods, in the case of considering its cost-effective, choose low rotation speed, long lead, transmission quantity of material quality, rating of long life.

3, ensure debris into the pump housing

wet mud into the solid impurities will be vulcanized rubber material of screw pump stator leads to destruction, thus ensuring clutter is not into the inner cavity of the pump is very important, many sewage treatment plants in front of the pump adapted the crusher, and some installation, equipment or filter, blocking debris into the screw pump, in view of the land should immediately take for lead to jam.

4, prevent the blanking

screw vacuum pump must not be allowed to run in the case of blanking, once created, the export of screw pump working pressure vulcanized rubber stator because of the dry friction, the moment caused by high temperature and burning, therefore, the crusher is in good condition, sandy unobstructed is one of the essential condition of screw pump all normal operation, as a result, some of the screw pump and pump body taking material shutdown equipment installation, when produce blanking, because of the characteristics of the screw pump its role has a naturally aspirated, cavity body will cause the vacuum pump, vacuum pump equipment can make the screw pump stop running.

5, maintain stable export pressure

screw vacuum pump is a kind of rotary pump capacity, blocked in the export side, working pressure will gradually rise, that is beyond working pressure value of the book. At this time significantly enhance motor load. The transmission system of mechanical equipment related components of the load will be more than an estimate by the designer, serious damage of motor, transmission system has broken parts. Screw pump in order to prevent the shenzhen destruction, typically in screw pump speed regulating valve, by-pass valve is installed at the exit is used to smooth export work pressure, maintain all the normal operation of pump.