Blade pump

Abstract

The invention discloses a blade pump comprising a stator, a rotor and blades. The stator has an inner surface of a cylindrical hole, the rotor is a cylinder with a radial slot, the rotor is eccentrically mounted in the cylindrical hole of the stator, the blades freely slide in the radial slot of the rotor, wherein the blade pump comprises a blade shaft, and the blade shaft and the cylindrical hole of the stator are coaxially mounted; the blades are connected to the blade shaft, every blade forms an impeller with fixed external diameter, the impeller is rotatably cooperated with the inner surface of the cylindrical hole of the stator. The blade pump has the advantages of simple structure, convenience in manufacturing, small energy consumption, steady performance and long service life, more important, the blade pump can be applied to the transportation of gas, liquid such as water, and the like.

Description

technical field [0001] The invention relates to a vane pump. Background technique [0002] The vane pump is mainly composed of a rotor, a stator (that is, the pump body), blades and end covers. The stator has an inner surface with a cylindrical hole, and the rotor is a cylinder with radial grooves. The blades are placed in the grooves, and the blades can move freely in the grooves. Sliding, the rotor is mounted eccentrically in the cylindrical bore of the stator. The vane pump in the prior art generally refers to the vane pump, and its vanes are of vane type. When the rotor is driven by the prime mover to rotate, the vanes are tightly pressed in the stator by centrifugal force or spring force or pressure oil from the root of the vane. On the surface, in the first half of the rotation of the rotor, the space surrounded by two adjacent blades gradually increases to form a partial vacuum to suck the liquid, and in the second half of the rotation, the space gradually decreases...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the blades of the vane pump are all sliding vane type, with complex structure and high manufacturing precision. Because the sliding vane type blades are pressed tightly on the inner surface of the stator by centrifugal force or spring force, not only the blades are stuck when they are working possibility, and the tip of the blade is also easy to wear, so the vane pump in the prior art consumes a lot of energy, the performance is unstable, and the service life is short. In addition, more importantly, because the tip of the blade and the stator There is a large friction when the inner surface is pressed tightly, so the vane pump can only be used in lubricated oil medium systems, such as hydraulic systems and lubrication systems of machine tools, hydraulic presses, lifting and transportation machinery, construction machinery and plastic machinery, etc. It cannot be popularized and applied in liquid media such as gas and water

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