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Eccentric cover for cycloidal inner/outer rotor pump

A technology of eccentric sleeve and rotor pump, which is applied in the field of eccentric sleeve, can solve problems such as volumetric efficiency, and achieve the effects of reducing friction, improving working effect, and improving sealing strength

Inactive Publication Date: 2008-06-25
邵建勋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005]The present invention solves the problem of volumetric efficiency

Method used

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  • Eccentric cover for cycloidal inner/outer rotor pump
  • Eccentric cover for cycloidal inner/outer rotor pump
  • Eccentric cover for cycloidal inner/outer rotor pump

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Embodiment Construction

[0024] The technical solutions of the present invention will be further specifically described below through specific embodiments and in conjunction with the accompanying drawings.

[0025] figure 1 The middle and inner rotors 1 and the outer rotors 2 are meshed on the medium tank 3, so that a load medium with positive and negative pressure differences is generated in the pump chamber 6, because the unloading tank 4 on the original pump body has been improved and replaced by the sealing ring 5 , so the load medium passes through figure 2 The small through hole 11 on the middle eccentric sleeve 7 flows into the unloading pit 10, and the small through hole 11 for load penetration is concentric with the eccentric hole 9, because the center of the eccentric hole 9 is where the inner rotor 1 and the outer rotor 2 mesh In the working position, the positive and negative pressure difference is concentrated, and the need for unloading is large. image 3 The spring steel sheet 12 in ...

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Abstract

The invention discloses an eccentric sleeve of a cycloidal inner-outer rotor pump, which is mainly provided with a non-axial expansion clearance between an the eccentric sleeve and a chamber of the pump, the eccentric sleeve is provided with a retaining nest, an unloading steel pit, a through hole for penetrating loading, a spring steel sheet with a pointed nose is placed in the unloading steel pit, and the spring steel sheet is arranged between the eccentric sleeve and an end closure of a shell of the pump, so the eccentric sleeve has elastic effect to a higher pair contacts between an internal rotor and an external rotor, thereby the invention not only automatically compensates the axial clearance between the internal rotor and the external rotor, but also reduces friction, improves the volumetric efficiency of the pump, prolongs the service life of the pump, stabilizes the operating pressure of the pump, and suppresses axially running noise when the pump operating; the invention guarantees that the pump has the capability of excellent operation for positive and negative rotation, maintains the capability of unloading and increases the function of sealing.

Description

technical field [0001] The invention relates to an eccentric sleeve in a pump body of a gear pump, in particular to an eccentric sleeve of a cycloid inner and outer rotor pump. Background technique [0002] At present, the commonly used eccentric sleeves of the cycloid inner and outer rotor pumps are mainly used to weaken the high-frequency shaking generated when the inner and outer rotors mesh. [0003] Someone has done research and applied for a patent in order to improve, and the patent publication number is: CN2034205, and the name is called: a kind of reversible cycloid type oil pump. The technology adopted in this patent is: two small tongues are arranged on the top of the eccentric sleeve, and the two small tongues are on the same straight line, and can rotate through 180° along the axis as the steering is different. Since the inner rotor is a fixed-axis rotor, the outer rotor meshing with the inner rotor is an eccentric rotor with a shifted shaft. When the eccentric...

Claims

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Application Information

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IPC IPC(8): F04C2/10F04C15/00
Inventor 毛善武邵建勋章继伟陈冬生郑明邵兴
Owner 邵建勋
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