Claw pump rotor and claw pump

Abstract

The invention discloses claw type pump rotors and a claw type pump. A rotor profile is composed of a epicycloid section A1A2, a tooth top arc section A2A3, a polynomial curve section A3A4, a middle transition circular arc section A4A5, a conjugate curve section A5A6 of a polynomial curve and a tooth root arc section A6A1 which are successively connected at the head and the tail; the polynomial curve section A3A4 is tangent to the tooth top arc segment A2A3; and the profiles of the two rotors are the same, and the two rotors can mesh with each other during rotation. According to the claw type pump rotors and a claw type pump, the design parameter space of the rotor profile is increased, so that the volume efficiency, the energy saving performance and the stress performance of the optimizedclaw pump are improved. Compared with other conventional pump type, the claw type pump rotors and the claw type pump has the advantages of less wearing parts, compact structure, high pumping rate, nosurge and low vibration noise.

Description

technical field [0001] The invention belongs to the field of mechanical design, and in particular relates to a claw pump rotor and a claw pump. Background technique [0002] The claw pump is a positive displacement rotary pump, which is mostly used to obtain a dry, low-pollution high-vacuum environment and compress clean gas, and has a wide range of applications in modern industry. It has inherited many advantages of rotary machinery, such as long life, reliable operation, small vibration, low noise, stable operation, no surge phenomenon, etc. At the same time, it has the characteristics of no wearing parts such as air valve, forced suction and exhaust, and simple processing. , becoming the preferred pump type for small and medium dry pumps. The core components of the claw pump are two rotors. The selection of the rotor profile determines the structure of the rotor, thus affecting the overall operating performance of the pump. The optimal design of the rotor is also a key ...

AI Technical Summary

Problems solved by technology

However, the variable space for the shape parameters of the current claw pump profile is insufficient, resulting in a single profile shape that can be found by optimization, resulting in the fact that the claw pump using this profile can no longer adapt to the current changing applications and Changeable application performance requirements, and increasing the variable space of shape parameters, can also effectively improve the performance of the optimized claw pump

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