A fully smooth straight claw rotor

Abstract

The invention discloses a full-smooth straight claw type rotor. The full-smooth straight claw type rotor is composed of 11 curves including six circular arcs, equidistant curves of three cycloid curves, one line and an envelope curve of one line; from beginning of the pitch circle, the pitch circle circular arc GH, the envelope curve HI of the line, the third claw tip circular arc IJ, the equidistant curve JK of one cycloid curve, the claw bottom circular arc KA, the equidistant curve AB of another cycloid curve, the first claw tip circular arc BC, the claw top circular arc CD, the second claw tip circular arc DE, the equidistant curve EF of another cycloid curve and the line FG are sequentially connected in the anticlockwise direction; the adjacent curves are all in smooth connection, non-smooth tip points do not exist, two engaged claw type rotors are completely same, in the work process, complete correct engaging and smooth connection of lines of the claw type rotor can be achieved, the problem that claw back segment curves do not participate in engaging completely is solved, and work efficiency and work performance of claw type fluid machines are improved.

Description

technical field [0001] The invention relates to a fully smooth straight claw rotor. Background technique [0002] Claw fluid machinery is a new type of dry fluid machinery widely used in production. The key to its design is the profile design of the claw rotor; the claw rotor consists of a pair of rotors with the same shape and capable of conjugate meshing. The synchronous and opposite double-rotation motion of the rotor is realized through the synchronous gear, so that the volume of the working chamber changes periodically, and the suction, compression and discharge of the gas are completed. [0003] The meshing characteristics of the claw rotor profile directly determine the working performance of the claw rotor. The existing straight claw rotor profile includes: 3 arcs, 2 cycloids, 1 line, and the envelope of 1 line. Chinese patent (patent number: ZL201510400518.9) proposes a straight-claw rotor, which consists of 5 circular arcs, 2 equidistant curves of cycloids, 1 line...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention proposes a fully smooth straight claw rotor and its construction method. A section of arc IJ is used at the tip of the claw to smoothly connect the envelope HI of the line segment and the equidistant curve JK of the cycloid. A cycloidal equidistant curve EF is adopted at the back of the claw, which is smoothly connected with the second claw tip arc DE and line segment FG, realizing the fully smooth connection of the claw rotor and eliminating sharp points and irregularities in the existing claw rotor. The defect of smooth connection solves the problem of incomplete meshing of the line segments at the back of the claw; the claw rotor profile can not only realize the smooth connection of all profiles, but also effectively avoid stress concentration, force deformation and wear leakage, improving the The force characteristics and meshing sealing of the claw rotor make the rotor profile suitable for higher speed, higher pressure and higher temperature applications, which improves the performance and service life of the rotor; for the abundant claw rotor type It is of great significance to promote the development of claw vacuum pump, claw compressor and claw expander

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