Types and characteristics of commonly used hydraulic pumps
1, according to whether the flow can be adjusted can be divided into: variable pump and quantitative pump. Output flow can be adjusted according to the needs of the variable pump, flow can not be adjusted as a quantitative pump.
2, according to the commonly used pump structure in the hydraulic system is divided into: gear pump, vane pump and plunger pump 3 kinds.
Gear pump: small volume, simple structure, oil cleanliness requirements are not strict, cheaper price; But pump shaft by unbalanced force, wear serious, leakage.
Vane pump: divided into double-acting vane pump and single-acting vane pump. This pump flow uniformity, smooth operation, low noise, operating pressure and volume efficiency than gear pump high, more complex than gear pump structure.
Hydraulic pump internal structure drawing
Plunger pump: high volume efficiency, small leakage, can work under high pressure, mostly used in high power hydraulic system; But the structure is complex, the material and the processing precision request is high, the price is expensive, the oil cleanliness request is high.
Generally in gear pump and blade pump can not meet the requirements of the plunger pump. There are some other forms of hydraulic pump, such as screw pump, but the application is not as common as the above three.
Features:
Aluminum alloy manufacturing, high strength, corrosion resistance, light weight, suitable for all kinds of environments.
The two-speed characteristic reduces the number of times of pressure, which can be quickly put into the state of load work in the low-pressure chamber and immediately converted to high pressure, thus shortening each operation cycle.
Equipped with pressure control valve, adjustable control and set working pressure.
