Hydraulic oil pump is the power source in the hydraulic system, we choose the hydraulic oil pump to meet the pressure and flow needs of the hydraulic system, but also fully consider the reliability, life, maintainability, etc., so that the selected hydraulic oil pump can run in the hydraulic system for a long time. There are many types of hydraulic oil pumps and their characteristics are also very different. Hydraulic pump includes vane pump, gear pump, plunger pump and screw pump, in the market generally used are vane pump, gear pump and plunger pump. The vane pump can be divided into variable vane pump, variable heat dissipation variable vane pump, variable vane pump with cooling pump and quantitative vane pump. Hydraulic oil pump is composed of pump body, rectangular oil tank, pressure, ultra-high pressure steel wire braided hose four parts, the power components of the hydraulic system, its role is to convert the mechanical energy of the prime mover into the pressure energy of the liquid, refers to the hydraulic system in the oil pump, it provides power to the entire hydraulic system. The structure of hydraulic pump generally has gear pump, vane pump and plunger pump. Hydraulic oil pump joint has straight through type, self-sealing type, quick joint three types.

Hydraulic oil pump is the power source in the hydraulic system, we choose the hydraulic oil pump to meet the pressure and flow needs of the hydraulic system, but also fully consider the reliability, life, maintainability, etc., so that the selected hydraulic oil pump can run in the hydraulic system for a long time. There are many types of hydraulic oil pumps and their characteristics are also very different. Hydraulic oil pump features: 1, hydraulic oil pump body small weight, easy to use, high working pressure. 2, single-stage pumping station: simple structure, can obtain greater working pressure. 3, two-stage pumping station: low pressure, high and low pressure pump oil supply at the same time, can obtain a larger output flow; At high pressure, the low pressure pump automatically returns the oil without load through the unloading relief valve. Reduce power consumption. 4, pressure holding function: in the case of no leakage in the external oil circuit, stop the pump and maintain pressure for 5 minutes, and the rated pressure drop does not exceed 5Mpa. Classification of hydraulic pump: According to the pump structure commonly used in the hydraulic system is divided into: gear pump, vane pump and plunger pump 3 kinds.