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Brief introduction and classification of hydraulic pump and hydraulic components

Update:10-02-2020
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A brief introduction of hydraulic pump It is a kind of […]

A brief introduction of hydraulic pump
It is a kind of hydraulic component that supplies pressurized liquid for hydraulic transmission and a kind of pump. Its effect is to convert the machine energy of power machine (such as electric motor and internal combustion engine) into the pressure energy of liquid. The output flow can be adjusted if necessary, which is called variable pump. If the flow of wiggs accessories cannot be adjusted, it is called quantitative pump. There are three kinds of pumps commonly used in hydraulic system: gear pump, vane pump and plunger pump.
① Gear pump: small volume, simple planning, lax demand for oil cleanliness, more self-control value; however, the pump shaft is seriously worn due to unbalanced force, with large leakage.
② Vane pump: divided into double effect vane pump and single effect vane pump. This kind of pump has uniform flow, stable operation, low noise, higher working pressure and volume than gear pump, and larger planning than gear pump.
③ Plunger pump: with high volume and small leakage, it can work under high pressure, mostly used in high-power hydraulic system; sao'danfoss accessories but with large planning, high demand for data and processing accuracy, high value, high demand for oil cleanliness. The same usually in gear pump and vane pump can not meet the needs of the plunger pump. There are some other ways of hydraulic pump, such as screw pump, but the application is not as common as the above three.

II. Classification of hydraulic pumps
According to whether the flow can be regulated, it can be divided into variable pump and quantitative pump. Output flow can be necessary to regulate the certificate called variable pump, flow can not be regulated called quantitative pump. According to the commonly used pump specifications in hydraulic system, it can be divided into gear pump, vane pump and plunger pump. Gear pump: small volume, simple planning, lax demand for oil cleanliness, more self-control value; however, the pump shaft is seriously worn due to unbalanced force, with large leakage. Vane pump: divided into double effect vane pump and single effect vane pump. This kind of pump has uniform flow, stable operation, low noise, higher operating pressure and volume than gear pump, and larger planning than gear pump. Plunger pump: it has high volume, small leakage, can work under high pressure, and is mostly used in high-power hydraulic system; however, it has large planning, high demand for Parker accessories data and processing accuracy, high value, and high demand for oil cleanliness. The same usually in gear pump and vane pump can not meet the needs of the plunger pump. There are some other ways of hydraulic pump, such as screw pump, but the application is not as common as the above three.

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