Involute and straight claw type rotor structure for oilless vacuum pump

Abstract

The present invention belongs to the field of vacuum equipment technology. The claw rotor structure includes mainly a claw rotor pair inside pump body with sealer, cooling circular water channel, drive motor and transmission gears. The present invention features one suspended claw rotor pair, and each of the two claw rotor has single claw arm with one concave claw notch. The claw arm has sides in gear involute contour, top in circular arc and claw groove comprising straight line section and arced section. Each pump has two claw rotors, and the claw structure has raised rigidity, smooth running, less vibration and noise, low fault rate and long service life.

Description

technical field [0001] The invention belongs to the field of vacuum technology equipment, and in particular relates to an involute and linear claw rotor structure which can be used for oil-containing or oil-free vacuum pumps or compressors. Background technique [0002] At present, as an indispensable equipment in vacuum technology equipment - vacuum pump, with the rapid development of science and technology, it is constantly updated, and the structural principle is introduced new. The modern new rotor oil-free vacuum pump has incomparable advantages compared with the traditional vacuum pump. For example, in the national patent 99255371.7 and 01232818.9 and other authorized patents, the designer has clearly recorded the main structure and superior performance of the multi-stage double-claw rotor vacuum pump and the oil-free vacuum pump. There are deficiencies, such as large vibration and noise, high temperature rise, high failure rate, short service life, and complex process...

AI Technical Summary

Problems solved by technology

[0002] At present, as an indispensable equipment in vacuum technology equipment - vacuum pump, with the rapid development of science and technology, it is constantly updated, and the structural principle is introduced new. The modern new rotor oil-free vacuum pump has incomparable advantages compared with the traditional vacuum pump. For example, in the national patent 99255371.7 and 01232818.9 and other authorized patents, the designer has clearly recorded the main structure and superior performance of the multi-stage double-claw rotor vacuum pump and the oil-free vacuum pump. There are deficiencies, such as large vibration and noise, high temperature rise, high failure rate, short service life, and complex processing technology and other technical problems

The reason is mainly from the structure of the claw-type rotor. In order to obtain good airtightness when the claws are cross-engaged, cycloidal claws that are difficult to process are used, which makes the claw arms sharp and thin. The above-mentioned problems will inevitably occur in the pump, and it is difficult to meet the ideal design principle requirements for this kind of claw processing and testing.

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