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Screw profile for high flow high-pressure dual-screw pump

A twin-screw pump, high-flow technology, applied to the components, pumps, pump components, etc. of the pumping device for elastic fluid, can solve the problems of low output pressure, can not be completely sealed, small specific flow, etc., to achieve the output pressure The effect of increasing, good sealing performance and low processing cost

Inactive Publication Date: 2006-03-08
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A small number of twin-screw pump screws also have double-ended teeth, but both screws are double-ended, with the same number of teeth and the same cross-sectional shape, and they cannot be completely sealed.
Whether it is a single-headed or a double-headed screw, their common disadvantages are: 1. Small specific flow rate; 2. Low output pressure

Method used

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  • Screw profile for high flow high-pressure dual-screw pump
  • Screw profile for high flow high-pressure dual-screw pump
  • Screw profile for high flow high-pressure dual-screw pump

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing, the present invention is described in detail.

[0018] The screw pump of the present invention includes two screw rods, one screw rod is a single-start screw rod, and the other screw rod is a double-start screw rod.

[0019] figure 1 Shows the shape of the radial cross-section of the double-ended screw of the present invention, the tooth profile of the two-ended screw of the double-ended screw is the same, and is distributed symmetrically along the circumference, and the arcs aj and fg of the tooth tops are represented by o 1 The arc with the center of the circle, the root arc line cd and hi are o 1 is the arc of the center of the circle, the point a at one end of the addendum arc line aj and the point c at the end of the dedendum arc line cd are composed of a radial straight line segment ab and a generalized cycloid bc, and the point f at the end of the addendum arc line fg and the tooth The point d between the other en...

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Abstract

This invention discloses screw tooth shape for high flow high pressure triangle screw pump, which contains single-thread screw and double-thread screw. Said invention has shorter seal line, fine seal property, multiple increased output flow and pressure.

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 high-pressure 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. However, all the above-mentioned tooth shapes are single-headed, and the cross-sections of the two screws are the same. A small number of twin-screw pump screws also have double-ended tooth profiles, but both screws are double-ended, with the same number of teeth and the same cross-sectional shape, and they cannot be completely sealed. Whether it is a single-headed or double-headed screw, their common disadvantages are: 1. Small specific flow rate, 2. Low output pressure. [0003] Compared with the various tooth shapes mentioned above, the tooth shape of the present in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C29/00F04C2/16F04C18/16
Inventor 陈行
Owner ZHEJIANG UNIV
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