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Three-blade elliptic arc type cam rotor

A cam rotor and elliptical arc technology, which is applied in the direction of rotary piston pumps, rotary piston machines, machines/engines, etc., can solve the problems of low area utilization, small range, and limited use range of rotors, etc.

Inactive Publication Date: 2016-12-07
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the commonly used three-lobed cam rotor profile is arc-shaped rotor profile; the arc-shaped rotor profile is composed of 3 segments of arc and 3 segments of arc conjugate envelope, which has the advantages of simple design and processing and good sealing performance , but in arc-shaped rotors, the rotor outer circle radius R 1 and pitch circle radius R 2 The range of the ratio is small, and the area utilization rate is not high, thus limiting the scope of use of the rotor

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  • Three-blade elliptic arc type cam rotor
  • Three-blade elliptic arc type cam rotor
  • Three-blade elliptic arc type cam rotor

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Embodiment Construction

[0053] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0054] like figure 1 As shown, it is a proposed three-lobed elliptical arc cam rotor. The profile line of the left cam rotor (1) is composed of six curves connected smoothly from the beginning to the end, which are as follows: the first elliptical arc segment A 1 B 1 C 1 , the first ellipse arc conjugate envelope C 1 D. 1 E. 1 , the second ellipse arc segment E 1 f 1 G 1 , the second ellipse arc conjugate envelope G 1 h 1 I 1 , the third ellipse arc segment I 1 J 1 K 1 , the third ellipse arc conjugate envelope K 1 L 1 A 1 , which is characterized by: connection point A 1 、C 1 ,E 1 , G 1 , I 1 、K 1 are located on the pitch circle, and ∠A 1 o 1 B 1 =∠C 1 o 1 B 1 =30°, ∠E 1 o 1 B 1 =∠K 1 o 1 B 1 =90°, ∠G 1 o 1 B 1 =∠I 1 o 1 B 1 =150°; the first ellipse arc segment A 1 B 1 C 1 Symmetric about the x-axis, the conju...

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Abstract

The invention discloses a three-blade elliptic arc type cam rotor, and belongs to the technical field of cam rotor pumps. The profile of a left side cam rotor body (1) of the three-blade elliptic arc type cam rotor is formed by smoothly connecting six sections of curves end to end, wherein the curves sequentially include a first elliptic arc section A1B1C1, a first elliptic arc conjugation envelope line C1D1E1, a second elliptic arc section E1F1G1, a second elliptic arc conjugation envelope line G1H1I1, a third elliptic arc section I1J1K1 and a third elliptic arc conjugation envelope line K1L1A1. The two same cam rotor bodies can be correctly engaged in the synchronous different-direction double-rotation movement process. The three-blade elliptic arc type cam rotor which is put forward has the beneficial effects of being good in sealing performance, high in area utilization rate, large in range of the ratio of the rotor outer circle radius R1 to the pitch radius R2 and convenient to machine.

Description

technical field [0001] The invention relates to a cam rotor pump, in particular to a three-lobe elliptical arc cam rotor suitable for the cam rotor pump. Background technique [0002] The rotary lobe pump is a rotary fluid machine, which is widely used in the petroleum, chemical and food industries. The rotary lobe pump uses two cam rotors that can mesh with each other to perform synchronous and opposite double-rotation movements to form a pressure difference, thereby realizing medium The suction, transportation and discharge of the cam rotor; the composition line of the cam rotor and its conjugate meshing characteristics have a great influence on the area utilization of the cam rotor and the sealing performance and operating efficiency of the cam rotor pump. Now the two-blade cam rotor pump is widely used Compared with the three-lobe lobe rotor pump, the three-lobe lobe rotor pump has the advantages of low noise, smooth operation and stable performance, so the reasonable de...

Claims

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Application Information

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IPC IPC(8): F04C2/12F04C18/12F04C25/02
CPCF04C2/126F04C18/126F04C25/02
Inventor 王君刘瑞青张凌宏刘强魏蜀红杨舒然
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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