Highly effective inner mesh gear pump or motor

A technology of internal gear pump and internal gear, applied in pump, rotary piston pump, rotary or oscillating piston engine, etc., can solve problems such as difficult axial leakage

Inactive Publication Date: 2008-05-28
王晓忻
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0010] The technical problem to be solved by the present invention is to overcome the defect that the fixed flexible side plate in the internal meshing gear pump or motor is difficult to control the axial leakage by its own deformation, and to provide a high-efficiency pump that can effectively control the tooth side clearance, small internal leakage, and high volumetric efficiency. Internal gear pump or motor

Method used

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  • Highly effective inner mesh gear pump or motor
  • Highly effective inner mesh gear pump or motor
  • Highly effective inner mesh gear pump or motor

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Embodiment Construction

[0023] The present invention will now be described in further detail in conjunction with the accompanying drawings and embodiments.

[0024] Please refer to FIG. 2 , a structural sectional view of the present invention, which shows that the high-efficiency internal gear pump includes a housing 1 , an internal gear pair 2 , a pressure compensation side plate 3 , a front cover 4 and a shaft 5 . The internal meshing gear pair 2 and the pressure compensating side plate 3 located on the side of the internal meshing gear pair 2 are jointly accommodated in the inner hole of the housing 1 and both pass through the shaft 5. The pressure compensating side plate 3 is The internal meshing gear pair 2 and the housing 1 can move freely along the axial direction of the shaft 5; The compensation side plate 3 is sealed in the inner cavity of the housing 1 formed by the inner hole, and the front cover 4 has an oil inlet hole 6 communicating with the low-pressure volume chamber 24 (see FIG. 3 ) ...

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Abstract

The invention discloses a high efficiency intermeshing gear pump or motor, comprising an intermeshing gear pair which is constituted by an inner geared ring and a rotor, a pressure compensating lateral plate on the lateral side of the intermeshing gear pair, and a casing, wherein the intermeshing gear pair and the pressure compensating lateral plate are commonly arranged in the casing, the pressure compensating lateral plate can freely move along axial direction between the intermeshing gear pair and the casing. The invention adopts the pressure compensating lateral plate which can freely move along axial direction, which can effectively control the evenness of the running clearance between the intermeshing gear pair and the pressure compensating lateral plate to reach a perfect size, thereby balancing sealing force, reducing sealing stress of the sealing face between the pressure compensating lateral plate and the intermeshing gear pair, avoiding occlusal damage on part of the sealing face, and effectively controlling the inner leakage of the intermeshing gear pair along the radial and axial directions. The invention has the advantages of small inner leakage, and high capacity efficiency, which can be extensively applied in various hydraulic systems with low oildraulic viscosity and high working pressure.

Description

Technical field: [0001] The invention relates to a rotary liquid variable displacement machine, in particular to a high-efficiency internal meshing gear pump or motor for a hydraulic transmission system. Background technique: [0002] In the hydraulic transmission system, the energy transmitted by the system is proportional to the product of flow and pressure, and the force transmitted is proportional to the product of working area and pressure. Therefore, if the pressure increases, corresponding to the same transmitted energy and force, the flow And the working area can be reduced. Therefore, for a hydraulic transmission system that requires a highly compact structure and extremely reduced weight, the advantages of high working pressure are obvious: small flow means that the size of the pump and oil tank and the diameter of the pipeline can be reduced, and the small working area means The volume of oil cylinder and oil motor can be reduced. In the past 30 years, the worki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C2/10F03C2/00
Inventor 王晓忻
Owner 王晓忻
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