The hydraulic pump is the power component of the hydraulic system. It is driven by an engine or an electric motor and sucks oil from the hydraulic oil tank to form the pressure oil to discharge and send it to the fulfillment component. Hydraulic pumps are divided into gear pumps, plunger pumps, vane pumps and screw pumps according to their structure.
The most common classification of hydraulic pumps:
1. According to whether the flow can be adjusted, it can be divided into: variable pump and fixed pump.
The output flow can be adjusted approximately according to the need to be called a variable pump, and the flow cannot be adjusted is called a quantitative pump.
2. According to the commonly used pump structure in hydraulic system, it is divided into three types: gear pump, vane pump and plunger pump.
Gear pumps: small in size, more general in structure, less demanding for oil cleanliness, and cheaper prices; but the pump shaft is subject to uneven forces, severe wear, and greater leakage.
Vane pump: Divided into double-effect vane pump and single-effect vane pump. This kind of pump has symmetrical flow, stable work, low noise, higher working pressure and volume power than gear pumps, and its structure is out of adjustment.
Plunger pump: high volume power, low leakage, can work under high pressure, mostly used in high-power hydraulic systems; but the structure is out of adjustment, the material and processing accuracy needs to be high, the price is expensive, and the cleanliness of the oil needs to be high.
Features:
The hydraulic pump is generally made of aluminum alloy, with high strength, falling resistance, light weight, and working under various conditions.
The two-speed feature screens the number of bounces, and the low-pressure chamber is quickly placed in a painful state of load, and immediately converted to high-pressure, shortening each working cycle.
Equipped with a pressure regulating valve, which can adjust the control and set the working pressure.