Rotary jet pumps
Performance capabilities：
● Flow range：0.5～60 m³/h
● Lift range：20～1000 m
● Speed range：1500～5000 r/min
● Medium temperature：≤200℃
Structures:
As shown. Rotary jet pump is made up of Case (Bearing Housing),Drive shaft,Impeller,Rotor Cavity, Pick-up Tube,Manifold and antifriction bearing. The mechanical seal is installed in the inlet of Impeller.
Principles:
As shown. Drive shaft drives the Rotor Cavity and Impeller rotating, and the Pick-up Tube is inactive. On the top of Pick-up Tube, there is an opening along the tangent direction, that is the inlet of Pick-up Tube. The arrow indicates the motion direction of fluid in pump. Fluid inflow into Impeller (which rotates with Rotor Cavity) through the Manifold, then enter Rotor Cavity, finally go into Pick-up Tube through its entrance, Pick-up Tube collects high kinetic energy fluid in Rotor Cavity and converts more fluid kinetic energy into pressure energy, and then output fluid.
Feature: Rotary Jet Pump is a kind of high pressure pump, which can adjust the flow rate, work on the whole range of the lift curve, and with stable performance.
Sructure:
√ With simple structure, the assembly , disassembly and maintenance is very convenient; The quick-wearing parts of the whole unit is Mechanical Seal only ,so maintenance cost is low
√ The Mechanical Seal is installed at the inlet of the pump, as its pressure is low, therefore it is easy to realize the sealing (Especially compared with ordinary high-pressure pump), the assembly and disassembly are very convenient and Mechanical Seal has a long working life
√ There is no contact between the Drive shaft and the medium, no need to consider its corrosion resistance. And bearing service life is long
√ Almost no axial force, fundamentally overcomes the problem of large axial force and hard control for force direction, which is common for multistage pump and high speed pump
Performance:
√ The medium from Impeller has a stable process in the Rotor Cavity, and the flow-head curve is still stable when the flow rate is very small(0～3m³/h)， with no hump； It can operate stably at any point in the range from zero flow to design flow
√ No disc friction loss , with high efficiency
Application characteristic (Rotary Jet Pump can be applied to the following special conditions):
√ Medium containing certain particles; ultra-small flow parameters
√ The large gap in working conditions between normal flow and the rated flow.