Improved gear pump

A technology of gear pumps and slave gears, which is applied in the direction of pumps, rotary piston pumps, rotary piston machines, etc., can solve the problems of force and asymmetry that have not been seen in gear pumps, and achieve huge market application potential and symmetrical and uniform wear , the effect of simple structure

Inactive Publication Date: 2013-01-16
张意立
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

my country patent authorization announcement number: CN1059019C swing vane pump; my country patent authorization announcement number: CN100374725C rotary vane pump; The internal gear pump of plastic casing; my country's patent authorization announcement number: CN101120175B and my country's patent authorization announcement number: CN101403382B a kind of gear pump for micro-miniature turbojet engine, etc., all do not see that there is a practical method to solve the stress of the gear pump. Symmetry and face wear clearance control issues

Method used

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Embodiment Construction

[0020] In conjunction with the accompanying drawings and embodiments, the structure and working principle of the present invention are further described in detail:

[0021] An improved gear pump, comprising a drive shaft 11, a right driven shaft 12, a left driven shaft 13, a main gear 21, a right slave gear 22, a left slave gear 23, a front outer end cover 50, a rear outer end cover 70, a middle Cylindrical spring 81, right cylindrical spring 82, left cylindrical spring 83, pump body 90, as an improvement: the central two-section arc 91 on the inner cavity of the pump body 90 is slidingly fitted with the outer circle of the main gear 21; the pump body The right large half arc 92 on the inner cavity of 90 is slidingly matched with the outer circle of the right slave gear 22; the left large half arc 93 on the inner cavity of the pump body 90 is slidingly matched with the outer circle of the left slave gear 23; the main gear The drive shaft 11 at the center of 21 is parallel to t...

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Abstract

The invention relates to an improved gear pump. The improved gear pump comprises a driving shaft, a right driven shaft, a left driven shaft, a master driving gear, a right driven gear, a left driven gear, a front outer end cover, a back outer end cover, a middle cylindrical spring, a right cylindrical spring, a left cylindrical spring and a pump body. The improved gear pump has the following improvements that two sections of arcs in the center of an inner cavity of the pump body are in sliding fit with the excircle of the driving gear; the right major arc in the inner cavity of the pump body is in sliding fit with the excircle of the right driven gear; the left major arc in the inner cavity of the pump body is in sliding fit with the excircle of the left driven gear; the driving shaft in the center of the driving gear is parallel to the right driven shaft in the center of the right driven gear, and the driving shaft in the center of the driving gear is parallel to the left driven shaft in the center of the left driven gear; an inner plane of a back cover of the back outer end cover is hermetically fixed on the back end face of the pump body; an inner plane of a front cover of the front outer end cover is hermetically fixed on the front end face of the pump body; and a horizontal frontal plane of an end face compensation disk keeps close to the driving gear, the right driven gear and the left driven gear at the same time, and the middle cylindrical spring, the right cylindrical spring and the left cylindrical spring are respectively arranged between the back surface of the end face compensation disk and the inner side plane of the front outer end cover.

Description

technical field [0001] The invention belongs to the field of mechanical engineering. The international patent classification is F04D non-variable displacement pump, which relates to an energy-converting rotary positive displacement pump which converts mechanical energy into liquid pressure energy, in particular to an improved gear pump. Background technique [0002] The known gear pumps are all working in pairs. Due to the large pressure difference between the inlet and outlet, it is bound to cause unilateral force on the gear, especially the unilateral force on the driving gear, which directly causes unilateral wear and leakage at the shaft of the driving gear. As a result, the life of the gear pump is short and the pressure rise is limited. Another problem that has been plagued by gear pumps that cannot be effectively solved is that after long-term high-speed operation, the inevitable wear of the end face cannot be effectively compensated. my country patent authorization ...

Claims

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Application Information

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IPC IPC(8): F04C2/18
Inventor 张意立
Owner 张意立
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