A double external thread spoke spring gear pump

Abstract

The invention discloses a double external thread spoke spring gear pump, wherein a right inlet pipeline and a left inlet pipeline are converged into an oil inlet total pipe with inlet pipe external threads, the right outlet pipeline and a second oil outlet pipeline are converged into an oil outlet total pipe with an outlet pipe external threads, two sections of arcs of a body center of a pump body inner cavity are matched with an outer circle of a main gear in a sliding mode, a body right big semicircle of the pump body inner cavity is matched with a right driven gear outer circle in a sliding mode, a body left big semicircle of the pump body inner cavity is matched with a left driven gear outer circle in a sliding mode, a drive shaft arranged on the center of the main gear is parallel to a right driven shaft arranged on the center of a right driven gear, the drive shaft arranged on the center of the main gear is parallel to a left driven shaft arranged on the center of the left driven gear, a rear cover inner plane of a rear outer end cover is closed and fixed on the rear end surface of a pump body, a front cover inner plane of a front outer end cover is closed and fixed on the front end surface of the pump body, the main gear, the right driven gear and the left driven gear are pasted on the front plane of an end surface compensating disc at the same time, and a middle strip spring, a right strip spring and a left strip spring are respectively arranged between the back surface of the end surface compensating disc and the inner plane of the front outer end cover.

Description

technical field [0001] The invention belongs to the field of mechanical engineering, and the international patent classification is F04D non-variable pump, which relates to an energy-converting rotary volumetric pump which converts mechanical energy into liquid pressure energy, in particular to a double external thread spoke spring 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 authoriz...

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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

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