Flow-constant cam pump rotor profile and generation method thereof

A rotor profile and constant flow technology, applied in the direction of pumps, rotary piston pumps, rotary piston machines, etc., can solve problems such as noise, pulsation at joints, and inability to ensure stable and constant delivery of media, so as to reduce wear and prolong Service life, noise reduction effect

Active Publication Date: 2013-07-10
青岛罗德通用机械设备有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

Since the curve is not a whole, a large "pulsation" phenomenon will occur during the transportation of the medium, especially at the juncti

Method used

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  • Flow-constant cam pump rotor profile and generation method thereof
  • Flow-constant cam pump rotor profile and generation method thereof

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Embodiment Construction

[0010] The present invention is a constant flow cam pump rotor profile and its generation method, such as figure 1 As shown, the rotor profile of the cam pump is completely symmetrical about the axis of symmetry, the main profile of the rotor adopts the involute CD, the dedendum and the top part are composed of the first arc segment AB and the second arc segment EF, and the transition curve is The first high-order curve BC and the second high-order curve DE that carry on the involute and circular arc, the five sections of curves are connected end to end to form 1 / 4 of the rotor profile, and the profile line of the entire cam pump rotor is obtained according to the principle of symmetry.

[0011] like figure 1 As shown, the cam pump rotor adopts a two-dimensional tooth shape model, and the entire rotor profile adopts a completely symmetrical design. Smooth transition.

[0012] (1) The profile line of the cam pump rotor is a dedendum arc from the first point (A) to the secon...

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Abstract

The invention relates to a flow-constant cam pump rotor profile and a generation method thereof. A main profile of a rotor adopts an involute (CD), a tooth root part and a tooth crest part are formed by arc sections (AB and EF), transition curves are high stage curves (BC and DE) connecting the involute and the arc sections, five sections of curves are connected end to end to form one fourth of the rotor profile, and the entire cam pump rotor profile can be obtained according to a symmetry principle. The generation method of the cam pump rotor profile comprises the steps of: (1) determining a base radius, applying a geometric formula of a figure to elicit the arc radiuses of the high stage curves (BC and DE) of the tooth root and the tooth crest according to the rotor meshing principle, and thereby obtaining the main involute (CD) under the condition of the given pressure angle; and (2) applying the high stage curves (BC and DE) in the joint parts of the arc curves and the involute from the optimized aspect, so as to connect the curves end to end.

Description

technical field [0001] The invention relates to a non-contact cam pump rotor, in particular to a profile line of a cam pump rotor satisfying constant flow. Background technique [0002] At present, the lobe pump is widely used in the processing of food and medicine, and can transport medium with a certain viscosity (or granular). It has the advantages of simple structure, small shear force on the product and stable transportation. At present, the rotor profile is involute, cycloid, etc., and the top or root of the tooth is generally a circular arc. Because the curve is not a whole, a large "pulsation" phenomenon will occur during the transportation of the medium, especially at the junction of the two curves, which not only generates noise but also cannot guarantee the smooth and constant delivery of the medium. Contents of the invention [0003] The object of the present invention is to provide a constant-flow cam pump rotor profile and its generating method. [0004] T...

Claims

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Application Information

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IPC IPC(8): F04C2/18
Inventor 黎义斌贾琨桑小虎黄华
Owner 青岛罗德通用机械设备有限公司
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