Hydraulic pump is a commonly used hydraulic transmission component, and its working principle mainly relies on the flow of liquid under pressure to generate power. Hydraulic pumps are commonly used in industries, agriculture, ships, aviation, and other fields, and are widely used in the transmission control of various machinery and equipment. This article will introduce the working principle and main components of hydraulic pumps.The working principle of a hydraulic pump can be simply summarized as“ Inhale liquid, compress liquid, and output liquid;. Hydraulic pumps are usually composed of a drive shaft, pump body, inlet and outlet valves, etc. When the hydraulic pump is started, the drive shaft will rotate the pump body, and the pressure area inside the pump body will suck the liquid into the pump body, then compress the liquid and output it to the outlet valve.The main components of a hydraulic pump include the pump body, impeller, inlet and outlet valves, seals, etc. The pump body is the main component of a hydraulic pump, and its shape and size directly affect the performance of the pump. The impeller is a key component inside the pump body, and its rotation can generate pressure and flow. Import and export valves control the entry and exit of liquids, which can be manually or automatically controlled. The seal plays a role in sealing the pump body to ensure that the liquid inside the pump body does not leak out.The working principle and performance of hydraulic pumps are closely related to the type of pump. Common hydraulic pumps include gear pumps, plunger pumps, and vane pumps. Among them, gear pump is one of the most commonly used hydraulic pumps, with a simple structure, low price, but low flow rate and pressure; Piston pumps have higher pressure and flow rates, making them suitable for applications that require high power output; Blade pump is a high-efficiency and high-precision hydraulic pump suitable for high-speed and high-pressure working conditions.In short, hydraulic pump is an important hydraulic transmission component, and its working principle and performance directly affect the operational efficiency and safety of mechanical equipment. Understanding the working principle and main components of hydraulic pumps can better apply them and improve the performance and efficiency of mechanical equipment.