Cylindrical spring compensation internal/external gear pump
A technology of spring compensation and internal and external gears, which is applied to pumps, rotary piston pumps, rotary piston machines, etc., can solve problems such as no effective compensation methods and measures, and end face wear that cannot be effectively compensated.
Inactive Publication Date: 2012-04-18
HUNAN BALING FURNACE ENERGY CONSERVATION
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Problems solved by technology
The problem that has not been 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 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 the method and the measure that have practical and effective compensation, solve Gap Control Problems of End Surface Wear of Rotary Positive Displacement Pumps
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[0020] The structure and working principle of the present invention will be further described in detail with reference to the drawings and embodiments.
[0021] A cylindrical spring-compensated internal and external gear pump, comprising a driving shaft 10, an external gear 20, a cylindrical spring 30, an end surface compensation disc 40, an internal gear 50, a front end outer cover 60, end cover screws 70, a pump body 80, and a rear outer The cover 90 and the crescent-shaped spacer 25, the two ends of the pump body 80 are perpendicular to the hole 85 in the pump body, and the two ends are respectively covered with a front end outer cover 60 and a rear end outer cover 90, which are respectively fastened with end cover screws 70 The band seal groove front cover hole 61 of the front end outer cover 60 and the band seal groove rear cover hole 91 of the rear end outer cover 90 are on the same axis, and the band seal groove front cover hole 61 has an eccentric distance from the pump...
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The invention discloses a cylindrical spring compensation internal / external gear pump, which comprises a drive shaft, an external gear, a cylindrical spring, an end face compensation disk, an internal gear, a front outer cover, an end cover bolt, a pump body, a rear outer cover and a crescent isolation block, wherein the end face compensation disk is arranged between a rotation drum and the front outer cover; a crescent groove is formed on a positive plane of the compensation disk; an eccentric distance T is formed between the excircle of the compensation disk and an eccentric hole of the compensation disk; the excircle of the compensation disk is matched with an inner hole of the pump body in a sliding manner; an end surface of the cylindrical spring is fixedly arranged at a boss on the back side of the compensation disk; and the other end face of the cylindrical spring props against an inner lateral surface of the front outer cover. A concave cambered surface and a convex cambered surface of the crescent isolation block are matched with the crescent groove in a sliding manner, and axial counter resistance is produced by arranging one end surface of the cylindrical spring fixed at the boss on the back side of the compensation disk and propping the other end of the cylindrical spring against the inner lateral surface of the front outer cover, so that the volume space among teeth is effectively controlled in a radial gap, and an end face abrasion compensation gap control technology is provided.
Description
technical field [0001] The invention belongs to the field of mechanical engineering, and the international patent classification is F04D non-variable displacement pump, which relates to an energy-converting rotary displacement pump that converts mechanical energy into liquid pressure energy, in particular to a cylindrical spring-compensated internal and external gear pump. Background technique [0002] Rotary positive displacement pumps have the advantage of high efficiency, but their efficiency is significantly reduced after long-term wear and tear. The main reason for the above defects is that the end face movable isolation between the high-pressure chamber and the low-pressure chamber cannot effectively seal. If the tolerance size of the end face is too small, it is easy to be stuck due to thermal expansion. If the tolerance size of the end face is too large, it will not be effective in sealing, and the sealing effect will be worse after long-term operation and wear. The p...
Claims
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IPC IPC(8): F04C2/10
Inventor 张意立
Owner HUNAN BALING FURNACE ENERGY CONSERVATION