An Internal Gear Pump With Adjustable Volumetric Efficiency
An internal gear pump, volumetric efficiency technology, used in pumps, pump control, rotary piston pumps, etc., can solve the problem of slow wear of volumetric efficiency parts, failure of internal gear pumps, and inability to adjust volumetric efficiency of internal gear pumps, etc. question
Active Publication Date: 2019-04-05
海特克动力股份有限公司
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Problems solved by technology
[0002] After the assembly test of each component in the existing internal meshing gear pump, the clearance between each friction pair and each part has been completely determined, so the volumetric efficiency of each internal meshing gear pump that passes the test is determined. The value cannot be changed, and its volumetric efficiency only slowly decreases with the wear of the friction pair parts caused by the increase of working time. Excessive wear will eventually cause the failure of the internal gear pump
In some special internal gear pump application systems, when multiple internal gear pumps work in parallel and need to output the same flow rate, because the volumetric efficiency of each internal gear pump is different, and the existing internal gear pump The volumetric efficiency cannot be adjusted, so it is difficult to meet the requirements of this application
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[0015] like figure 1 As shown, an internal meshing gear pump with adjustable volumetric efficiency provided by the present invention includes a pump body 1, a gear shaft 2, an inner ring gear 3, and a crescent plate 4, and the crescent plate 4 includes a crescent main plate 5 and a crescent sub-plate 6. There are two leaf springs 7 and two sealing rods 8 between the bonding surfaces of the crescent main board 5 and the crescent sub-plate 6, and the two leaf springs 7 are matched with the two sealing rods 8, and the crescent The bonding surface of the main board 5 and the crescent sub-board 6 is divided into three sections. The pump body 1 is provided with an oil suction chamber T and an oil pressure chamber P. The side wall of the pressure oil chamber P is provided with a high-pressure oil passage 1-2. The side wall of the oil suction chamber T is provided with an oil drain channel 1-1, and the pump body 1 is also provided with a valve sleeve 12, a locking screw 13 and a valve...
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The invention provides an internal gear pump with adjustable volume efficiency. The internal gear pump comprises a pump body, a gear shaft, an inner gear ring and crescent-shaped levers, wherein the crescent-shaped levers include a crescent-shaped main lever and a crescent-shaped secondary lever, two leaf springs and two sealing rods are arranged between the abutted surfaces of the crescent-shapedmain lever and the crescent-shaped secondary lever, the two leaf springs and the two sealing rods are correspondingly matched, the abutted surfaces of the crescent-shaped main lever and the crescent-shaped secondary lever are divided into three sections, an oil suction chamber and an oil pressing chamber are formed in the pump body, a high-pressure oil passage is formed in the side wall of the oil pressing chamber, an oil leakage passage is formed in the side wall of the oil suction chamber, a valve sleeve, a locking screw and a valve element are arranged on the pump body, or a valve sleeve,a throttling orifice plate and an adjusting knob are arranged on the pump body. Partial pressure and flow of the high-pressure oil passage flow to the oil leakage passage of the oil suction chamber through throttling, so that the effect of adjusting the volume efficiency through throttling is achieved.
Description
technical field [0001] The invention relates to an internal meshing gear pump with adjustable volumetric efficiency. Background technique [0002] After the assembly test of each component in the existing internal meshing gear pump, the clearance between each friction pair and each part has been completely determined, so the volumetric efficiency of each internal meshing gear pump that passes the test is determined. The value cannot be changed, and its volumetric efficiency only slowly decreases with the wear of the friction pair parts caused by the increase of working time. Excessive wear will eventually cause the internal gear pump to fail. In some special internal gear pump application systems, when multiple internal gear pumps work in parallel and need to output the same flow rate, because the volumetric efficiency of each internal gear pump is different, and the existing internal gear pump The volumetric efficiency cannot be adjusted, so it is difficult to meet the req...
Claims
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IPC IPC(8): F04C2/10F04C14/24
CPCF04C2/101F04C14/24
Inventor 杨小理郑洪泉郭晓海杜国领
Owner 海特克动力股份有限公司