Hydraulic pump, also known as a hydraulic oil pump, is a machine that transports liquid or pressurizes liquid. A pump in a broad sense is a machine that transports fluid or pressurizes it, including some machines that transport gas. The pump transfers the mechanical energy of the prime mover or the energy of other energy sources to the liquid so that the energy of the liquid increases.

Hydraulic pumps are divided into vane pumps, gear pumps, plunger pumps, and screw pumps according to their structure. Vane pumps, gear pumps, and plunger pumps are generally used in the market. The vane pump can be divided into variable vane pump, heat dissipation variable vane pump, variable vane pump with cooling pump, and quantitative vane pump.

The hydraulic oil pump is composed of four parts: the pump body, the rectangular fuel tank, the pressure handle, and the ultra-high pressure steel wire braided hose. The power element of the hydraulic system is to convert the mechanical energy of the prime mover into the pressure energy of the liquid. , which powers the entire hydraulic system. The structural forms of hydraulic pumps generally include gear pumps, vane pumps, and plunger pumps. There are three types of hydraulic oil pump joints: straight-through type, self-sealing type, and quick joint.

The hydraulic oil pump is the power source in the hydraulic system. The hydraulic oil pump we choose should meet the pressure and flow requirements of the hydraulic system, and at the same time fully consider the reliability, life, maintainability, etc., so that the selected hydraulic oil pump can be used in the hydraulic system. medium and long-term operation. There are many types of hydraulic oil pumps and their characteristics are also very different.

The oil pump needs a power source to run. The key part of the fuel injection pump is the plunger. If the common syringe in the hospital is used as an analogy, the movable plug is called the plunger, and the syringe is called the plunger sleeve. Suppose a spring is installed in the syringe against the column. One end of the plunger and the other end of the plunger contacts the camshaft. When the camshaft rotates once, the plunger will move up and down once in the plunger sleeve, which is the basic movement mode of the oil pump plunger.

The plunger and the plunger sleeve are very precise accessories. There is an inclined groove on the plunger body, and a small hole on the plunger sleeve is called the suction port. This suction port is filled with hydraulic oil. When the inclined groove of the plunger faces the suction port, the oil hydraulic pressure enters the plunger sleeve, and the plunger is blocked. When the camshaft reaches a certain height, the inclined groove of the plunger is staggered from the suction port, and the suction port is closed so that the hydraulic oil can neither be sucked in nor pressed out. It will open the one-way valve and swarm out into the working area. Most of it enters the working area, and the rest is drained from the oil return hole, and the oil pressure is adjusted by increasing or decreasing the amount of oil returned.

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