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Star-shaped hydraulic pump

A technology of hydraulic pump and pump body, applied in the field of hydraulic system, can solve the problems of low volume efficiency of gear pump, low working pressure, large flow pulsation, etc., and achieve the effect of improving heat dissipation effect, balanced force and stable total pressure

Inactive Publication Date: 2015-08-19
王硕 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some existing hydraulic pumps, such as gear pumps and vane pumps, have some shortcomings and deficiencies. Gear pumps have disadvantages such as low volumetric efficiency, low working pressure, large impact, large flow pulsation, and short life, which prevent them from being widely used.

Method used

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Embodiment Construction

[0024] Such as Figure 1 to Figure 4As shown, it is a star hydraulic pump of the present invention, the hydraulic pump includes a pump body 29 and at least six cylinders 1, the cylinders 1 are evenly distributed around the pump body 29, and the top surface of the pump body 29 is provided with end Cover 7, the end cover 7 is provided with a limit chuck 8, the limit chuck 8 and the end cover 7 are all provided with fixing holes 9, and the screws pass through the fixing holes 9 to realize the limit chuck 8 and the end cover 7, end The fixed connection between the cover 7 and the pump body 29, the interior of the pump body 29 is provided with an inner cavity 14, and the inner cavity 14 is provided with an eccentric wheel 13, so that when the hydraulic pump is working, the six cylinders 1 can ensure the total flow Stable, and make the plunger 20 avoid oil pressure shock when changing from oil suction to oil discharge state. The eccentric wheel 13 is provided with a fan-shaped groov...

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Abstract

The invention discloses a star-shaped hydraulic pump. The star-shaped hydraulic pump comprises a pump body and at least six cylinder bodies. The cylinder bodies are evenly distributed around the pump body. An end cover is arranged on the top face of the pump body. A limit chuck is arranged on the end cover. An inner cavity is arranged in the pump body. An eccentric wheel is arranged on the inner cavity and fixedly connected to a power shaft. The side face of the pump body is provided with an oil outlet and an oil inlet. An overflow valve is arranged between the oil outlet and the oil inlet. A combination one-way valve is arranged on each cylinder body. An oil inlet pipe, an oil outlet pipe and a cavity wall fixing frame are arranged in each cylinder body, wherein a piston cavity, a plunger and a boosting spring are arranged in the cavity wall fixing frame, the piston cavity is communicated with the oil inlet pipe and the oil outlet pipe, and the plunger is connected into the piston cavity through the boosting spring. The star-shaped hydraulic pump is simple in structure and high in practicability; the hydraulic pump can suck oil more sufficiently, the fluctuation of oil pressure is greatly reduced, the oil pressure is maintained within a high pressure range, the impact on pipeline equipment is lowered, and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of hydraulic systems, in particular to a star hydraulic pump. Background technique [0002] The hydraulic pump is the power component of the hydraulic system. Its function is to convert the mechanical energy of the prime mover into the pressure energy of the liquid and provide power to the entire hydraulic system. Nowadays, with the rapid development of industry, the role of hydraulic pumps is becoming more and more important. They are widely used in various machinery such as ships, aviation, mining, metallurgy, die-casting, forging, and machine tools. They are the "heart" of modern industry. Some existing hydraulic pumps, such as gear pumps and vane pumps, have some shortcomings and deficiencies. Gear pumps have disadvantages such as low volumetric efficiency, low working pressure, large impact, large flow pulsation, and short life, which prevent them from being widely used. Contents of the invention [0003] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B1/04F04B53/00F04B53/10
Inventor 王林建
Owner 王硕
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