Involute line screw tooth shape of large flow double screw pump

A twin-screw pump, involute technology, used in pumps, rotary piston pumps, rotary piston machines, etc., can solve the problems of small specific flow and large volume, achieve high pressure, large oil storage space, shorten the screw effect of length
CN100460681CInactive Publication Date: 2009-02-11浙江中合建投控股有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
浙江中合建投控股有限公司
Publication Date
2009-02-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses a kind of screw involute profile for large flow double screw pump. The screw profile includes addendum circle connected via prolonged cycloid to one end of the dedendum circle, pitch circle with one end connected via prolonged cycloid and involute to the other end of the dedendum circle, and the other end of the pitch circle connected via involute to the other end of the addendum circle. The screw pump with the screws has less leakage, high output pressure, smooth running, great specific flow rate and easy manufacture.
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Description

technical field

[0001] The invention relates to the technical field of design and processing of mechanical parts, in particular to a screw tooth profile of a high-flow twin-screw pump. Background technique

[0002] The tooth shape of twin-screw pump screw has cycloid tooth shape (patent number: 99201251.1), Archimedes helix screw tooth shape (patent number: 96236524.6) and involute tooth shape. Although these tooth shapes can maintain full sealing, so the pressure is relatively high, but the main disadvantage is that the specific flow rate is relatively small, and the volume is too large for applications with large flow rates. Compared with the above-mentioned various tooth shapes, the tooth shape of the present invention obviously increases the specific flow rate and reduces the volume on the basis of maintaining the original pressure, but the processing is still more convenient. Contents of the invention

[0003] The object of the present invention is to provide an invo...

Claims

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