Which is durable, screw pump or impeller pump?
The pressure of the screw pump is gradually increased from the pressure in the suction chamber to the pressure of the discharge cavity through the sealing cavity at all levels. The pressure build-up is slow. Besides the advantages of low pulsation, the sound pressure level is very low, and it has the advantage of ensuring the conveying medium intact and not fast aging. In theory, the screw pump is pulsating because each rotation angle discharges the same volume of flow. In fact, there are still some pulsation due to the machining error and the gap, and the working length is not the integral multiple of the seal cavity. But the pulsation of its discharge pressure is much smaller than other types of pumps. The vibration of the whole device is caused by the pressure pulsation, and it is a very important reason for the increase of noise. Therefore, the important characteristic of small pressure pulsation, which makes it superior to many types of pumps, is preferred in hydraulic systems.Screw pump because there is no valve, pulse and other small reasons, the hydraulic loss is small, so it is usually combined with mechanical friction loss, not separately calculated.
For conveying the medium that may endanger the ecological environment, the pump can use magnetic force to drive the sealing structure of the magnetic pump, improve the reliability of the unit, and expand the scope of use.
Screw pumps are more durable.The general characteristics of screw pump screw pump has the characteristics of stable transmission medium of screw pump, the characteristics of discharge medium low turbulence, screw pump has the characteristics of pressure pulsation, weak screw pump has the characteristics of small mechanical vibration, screw pump has the characteristics of low noise, screw pump has the characteristics of self absorption properties, the characteristics of screw pump with suction performance, screw pump has the characteristics of high speed working ability, screw pump has the characteristics of the viscosity of the medium is not sensitive, screw pump has the characteristics of simple and compact structure, screw pump has the characteristics of small dimensions, the screw pump has the characteristics of lightweight, screw pump has the characteristics of high efficiency screw pump, screw pump has the characteristics of reliable work, has the characteristics of long service life and convenient operation and maintenance etc.. Therefore, the use of screw pumps is very extensive, comprehensive selection of various types of screw pumps, only from the transmission medium, its transmission capacity of various media than all other pumps conveying capacity. For the same type of single screw pump, their characteristics and application range are different.
