A double-headed claw pump rotor and its profile

A rotor profile and claw pump technology, which is applied to rotary piston pumps, rotary piston/oscillating piston pump components, pumps, etc., can solve the problem of inability to eliminate the closed volume of suction and exhaust, large wear, and profile design Insufficient parameter space and other problems

Active Publication Date: 2020-06-19
宝风压缩机科技(浙江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing double-tooth asymmetric claw pump profiles on the market have shortcomings such as insufficient space for profile design parameters, inability to eliminate the closed volume of suction and exhaust, and the presence of sharp points that cause greater wear and tear.

Method used

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  • A double-headed claw pump rotor and its profile
  • A double-headed claw pump rotor and its profile
  • A double-headed claw pump rotor and its profile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0088] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0089] see figure 1 , in the original rotor profile design, the left rotor consists of cycloid segment t 1 t 2 , arc segment t 2 t 3 , straight line segment t 3 t 4 , special curve t 4 t 1 ’, and with the curve t 1 t 2 t 3 t 4 t 1 'centrosymmetric curve t 1 't 2 't 3 't 4 't1 composition. The right rotor is defined by the cycloid segment j 1 j 2 , special curve t 4 t 1 'Conjugate meshing curve j 2 j 3 , straight line segment t 3 t 4 The conjugate meshing curve j of 3 j 4 , arc segment t 2 t 3 The conjugate meshing curve j of 4 j 1 ’ and with curve j 1 j 2 j 3 j 4 j 1 'centrosymmetric curve j 1 'j 2 'j 3 'j 4 'j 1 composition. Among them, the special curve t 4 t 1 The selection of ′ is different, as long as the curve is continuous and the first-order smoothness is satisfied. The type line is defined by the parameter ...

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Abstract

The invention relates to a double-head claw pump rotor and its molded line. The molded line comprises an equidistance curve of a point meshing epicycloid, a modified arc segment, a tooth top arc segment, an intermediate connecting arc segment, an arc conjugate curve segment, and a tooth root arc segment. Two rotors adopt a central symmetrical structure. By setting the modified arc segment, the sharp points are eliminated, and severe wearing phenomenon of the rotors during operation can be avoided. The equidistance curve of the point meshing epicycloid and the modified arc segment are always spaced apart to avoid the formation of suction and exhaust closed volume, and a design parameter space of the rotor molded line is increased, the power consumption is reduced, and the pump efficiency isimproved. The molded line is designed in the double-head claw pump, compared with the other conventional pumps, the pump in the invention has the advantages of less wearing parts, compact structure,high pumping rate, no surge, and low vibration noise.

Description

technical field [0001] The invention belongs to the field of mechanical engineering design, and in particular relates to a double-head claw pump rotor and its profile. Background technique [0002] The claw pump is a positive displacement rotary pump, which is mostly used to obtain a dry, low-pollution high-vacuum environment or to compress clean gas, and has a wide range of applications in modern industry. It inherits many advantages such as long service life, reliable operation, low vibration, low noise, stable operation and no surge phenomenon of rotary machinery. At the same time, it has the characteristics of no wearing parts such as air valves, forced suction and exhaust, and simple processing. Therefore, In recent years, it has become the preferred pump type for small and medium dry pumps. The core components of the claw pump are two rotors. The selection of the rotor profile determines the structure of the rotor, thus affecting the overall operating performance of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/12F04C29/00
CPCF04C18/126F04C29/00
Inventor 李丹童何志龙邢子文邓壮
Owner 宝风压缩机科技(浙江)有限公司
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