The self-balancing multistage pump produced by our company is equipped with a throttling pressure reducer in the middle position of the spindle, referred to as the throttling shaft sleeve, and has obtained the national utility model patent. Its main role is: it can play the role of throttling pressure reduction, but also can play the role of auxiliary support. The throttle shaft sleeve adopts a special sealing structure, and there are some special lines on the surface. The direction of thread is opposite to the rotation direction of the main shaft, so that the low pressure water becomes high pressure water and prevents the leakage of high pressure water.
The gap between the throttling sleeve and the throttling sleeve is very small, which can play the role of auxiliary support, and the medium plays the role of water cooling and lubrication to avoid the wear between the throttling sleeve and the throttling sleeve. The flexibility of the spindle is reduced and the rigidity is improved, so the self-balancing pump can do longer, the series is higher, and it is more suitable for high head pump. This is one of the core technologies of Zoomlian Pump self-balancing multistage pump, and it is also an important reason why our self-balancing multistage pump can be favored by the market.