What is a Hydraulic Pump?

What is a Hydraulic Pump?

Let’s start by briefly describing what a hydraulic pump is. A hydraulic pump is the name given to a circuit element that converts mechanical energy into hydraulic energy. It is an equipment that absorbs the fluid from the tank and then presses it into the system, according to the principle of increasing and/or decreasing volume with the rotational movement it receives from the electric motor or internal combustion engine. When we talk about a hydraulic pump, most of us think of it as applying pressure. It is a general belief that it works with the pressure it receives and that its working principle operates in line with this pressure. Hydraulic pumps do not create pressure. Pressure is created by the resistance to the flow of the fluid. In summary, pumps do not create pressure; There is a pressure that depends on the resistance.

Hydraulic pumps are the power source for many dynamic machines. Pumps are equipment that can transmit large amounts of oil from hydraulic cylinders or hydraulic motors. In this way, the pump converts the mechanical energy of the drive into hydrostatic energy. Hydraulic machines equipped with pumps can be used to perform different tasks such as lifting, lowering, opening, closing or turning components. Different types of hydraulic pumps are used in hydraulic circuits according to the application conditions and the needs of the designed system. Before moving on to the types of hydraulic pumps, let’s talk about how the hydraulic pump works.

Hydraulic pump working principle

Hydraulic pumps work on the displacement principle. It has two main functions. First, it creates a suction. The hydraulic pump creates a vacuum effect on the hydraulic oil in the oil plug with the pressure difference it creates, and with this effect, the hydraulic oil sucked from the tank is squeezed between the parts in the pump. Thus, a pressure increase is achieved. Hydraulic pump manufacturers, hydraulic pump; produces depending on different functional and hydraulic system requirements, such as working medium, required pressure range, drive type and so on. There is a wide variety of design principles and configurations behind hydraulic pumps. Each pump may not meet all needs, for which there are 3 different pump types; gear pumps, vane pumps, piston pumps. Now let’s take a closer look at the types of hydraulic pumps.