Mould temperature machine, pump, temperature control equipment, matched pump
The action of a rotating impeller on a liquid, in which the fluid is directed by the impulse to transmit kinetic energy to complete the delivery of the liquid.
The impeller is a disc of equal thickness, with many radial leaflets on both sides of its outer edge. An annular flow passage with a uniform section is arranged on the pump casing corresponding to the blade,
All the passages are divided into two sides by a tongue, which is connected with the suction and discharge line of the pump. Centrifugal force occurs when the liquid in the pump reverses with the impeller,
Push out into the annular flow passage in the pump casing, and be forced to flow back under the restriction of the shape of the runner, and then enter the other way from the root of the blade. Thus,
The trajectory of the liquid between the blade and the annular runner is a traveling spiral for the stopping pump shell; for the rolling impeller, it is a retreating spiral.
Vortex pumps are named for the vortex motion of liquids. The liquid can enter energy between the leaves repeatedly until it is eventually discharged from the outlet. The operation of a whirlpool pump is somewhat like a multistage centrifugal pump,
But the vortex pumps do not have energy conversion devices like centrifugal pumps, volute or guide vanes. The vortex pump mainly passes the energy to the liquid through the method of repeatedly doing work, so it can produce higher pressure.
In the energy transfer process, because the liquid has impact, energy loss is large, the pump power is low, usually 20 ~ 50%. The whirlpool pump is only suitable for requesting small flow (1~40 M / 3 / h),
High lift (up to 250 meters) occasions, such as fire pumps, aircraft gasoline pumps, small boilers, feed pumps, etc.. Vortex pumps deliver highly volatile and gas rich liquids, but are not used to deliver viscosity greater than 7 PA ·
A thicker liquid of 2 seconds and an unclean liquid rich in solid particles. Vortex pump features small flow, high lift, self-priming function, can be used to transport less than 5 degrees E viscosity of solid particles and similar to water.
Such as gasoline, kerosene, alcohol, etc., can be used as a small steam boiler water, chemical, pharmaceutical, building water supply and so on. The flow passing parts, as well as stainless steel, can be used to transport acid and caustic corrosive liquids