A fully smooth asymmetric double-jaw rotor

Abstract

The invention discloses a completely smooth asymmetrical double-claw rotor; the forming line of the left-claw rotor (101) includes: 4 cycloid equidistant curves, 8 circular arcs, 2 line segments, and 2 ellipse segments arc; the composition line of the right-claw rotor (102) includes: equidistant curves of 4 sections of cycloids, 8 sections of circular arcs, envelopes of 2 sections of lines, and envelopes of 2 sections of elliptical arcs; (101) and the right claw rotor (102) are all smooth, and both are center-symmetrical about their center of rotation; in their synchronous counter-rotating double-rotation motion, the two claw rotors can achieve completely correct meshing, Improve the engagement sealing and suction capacity of the claw rotor, reduce the stress concentration, force deformation and relative clearance volume of the claw rotor, and improve the working efficiency and performance of the claw fluid machinery and the use of the claw rotor life.

Description

technical field [0001] The invention relates to a fully smooth asymmetric double-claw rotor, which is used in a claw-type fluid machine, and is especially suitable for occasions with large suction volume, high rotor speed and high sealing requirements. Background technique [0002] Claw-type fluid machinery is a new type of dry-type fluid machinery widely used in production, which can be used as vacuum pumps, compressors and expanders. The key to its design is the profile design of the claw-type rotor; the claw-type rotor consists of a pair of capable The rotor is composed of a conjugate meshing, and the synchronous anisotropic double-rotation motion of the rotor is realized through the synchronous gear, so that the volume of the working chamber changes periodically, and the process of gas inhalation, compression and discharge is completed. [0003] The shape of the claw rotor and the meshing characteristics of its profile directly determine the working performance of the cl...

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Problems solved by technology

[0005] In order to solve the shortcomings of the claw rotor meshing process, the meshing of the point and the line is easy to produce large leakage, and the mechanical properties of the sharp point are poor, in order to obtain a fully smooth claw rotor, and to enrich the profile types of the claw rotor , the present invention adopts the ellipse arc and the envelope of the ellipse arc as the profile line of the claw rotor, and proposes a fully smooth asymmetric double claw rotor and a construction method; for the left claw rotor (101), adopt 1 section of arc at the top of the claw, adopting 1 section of cycloid equidistant curve at the back of the claw, which improves the meshing and sealing performance of the claw rotor; adopts 1 section of elliptical arc, which improves the stability and stability of the claw rotor during movement. The suction capacity, internal volume ratio and volume utilization rate of fluid machinery; for the right claw rotor (102), one section of claw tip arc is used at the third claw tip, and one segment of claw tip arc is used at the fourth claw tip, which improves the The meshing and sealing of the rotor reduces the wear of the rotor; the claw rotor realizes the smooth connection of the rotor profile, eliminates the point-to-line meshing between the claw rotor and the pump chamber, and can effectively reduce the sharp point. The stress concentration, stress deformation and wear leakage improve the mechanical properties and meshing sealing of the claw rotor, making the claw rotor suitable for higher speed, higher pressure and higher temperature applications, improving the rotor It is of great significance for enriching the types of claw rotor profiles and promoting the development of claw vacuum pumps, claw compressors and claw expanders

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