A gear pump capable of realizing high and low pressure separation and confluence
A split-flow and gear pump technology, applied in pumps, pump control, rotary piston/swing piston pump combinations, etc., can solve the problems of high production cost, difficult production, complex structure, etc., and achieve manufacturing cost reduction, The effect of simple processing and manufacturing and high control precision
Active Publication Date: 2017-03-01
HEBEI RUIZHI CHENCHENG HYDRAULIC MACHINERY TECH CO LTD
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Problems solved by technology
[0002] Ordinary duplex pumps must have at least three oil ports. When working at high pressure, since the automatic unloading of the large pump at low pressure between the two gear pumps must be achieved by adding a travel switch and an electromagnetic reversing valve, the overall control components are relatively small. Many, the pipelines and lines are more complex and require electrical control to realize, the structure is complex, it is not easy to produce, and the production cost is high
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[0014] The invention relates to a gear pump capable of realizing high-pressure and low-pressure separation and confluence, including a first pump body 1 and a second pump body 2 coaxially arranged, and a confluence pump body 19 is passed between the first pump body 1 and the second pump body 2 For connection, an oil inlet 3 and an oil outlet 4 are provided on the confluence pump body 19, and the first pump body 1 and the second pump body 2 are provided with oil inlet passages communicating with the oil inlet 3 and the oil outlet 4 respectively 5 and the oil outlet channel 6, the inner wall of the oil outlet 4 is provided with an oil control channel 7, the oil outlet channel 6 is provided with a check valve 8 near the second pump body 2 on the side of the oil outlet 4, and the oil inlet channel 5 is on the second pump body 2 An adjustment channel 9 is provided between the inner end of the pump body 2 and the inner end of the oil outlet channel 6 for communication, and the lower ...
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The invention relates to a gear pump capable of achieving high-pressure flow and low-pressure flow convergence and distribution. The gear pump capable of achieving high-pressure flow and low-pressure flow convergence and distribution comprises a first pump body and a second pump body, wherein the first pump body and the second pump body are connected through a convergence pump body. An oil inlet and an oil outlet are formed in the convergence pump body. An oil inlet channel and an oil outlet channel are formed in the first pump body and the second pump body. An oil control channel is formed in the inner wall of the oil outlet and is communicated with a regulation channel. A one-way valve is arranged at the position, close to the second pump body, of the oil outlet of the oil outlet channel. The regulation channel is arranged between the oil inlet channel and the oil outlet channel, a regulation device is arranged in the regulation channel, and the regulation device regulates the oil inlet channel and the oil outlet channel to be communicated or blocked in the second pump body. When pressure in the oil control channel is low, a hydraulic control valve in the second pump body cannot be pushed open by a control piston in the regulation channel; when pressure in the oil control channel rises, the hydraulic control valve in the second pump body is pushed open by the control piston, so that the unloading process is completed; unloading pressure is obtained by adjusting a pressure adjustment spring; the structure is simple, production is easy, and cost is low.
Description
technical field [0001] The invention belongs to the technical field of gear pumps, and relates to a gear pump capable of realizing separation and flow of high and low pressures. Background technique [0002] Ordinary duplex pumps must have at least three oil ports. When working at high pressure, since the automatic unloading of the large pump at low pressure between the two gear pumps must be achieved by adding a travel switch and an electromagnetic reversing valve, the overall control components are relatively small. Many, the pipelines and lines are more complicated and require electrical control to realize, the structure is complicated, it is not easy to produce, and the production cost is high. Contents of the invention [0003] In order to overcome the defects of the prior art, the present invention designs a novel gear pump with simple structure, reasonable design, easy production, low production cost and the ability to realize high and low pressure separation and co...
Claims
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IPC IPC(8): F04C11/00F04C14/02
Inventor 王松李硕起高庚华陈立峰李永强史少杰
Owner HEBEI RUIZHI CHENCHENG HYDRAULIC MACHINERY TECH CO LTD