The principle of a small concrete pump is very simple; it utilizes the principle of a hydraulic system.Concrete delivery pumpInside, there is a hydraulic system that is used to pump our concrete out. The hydraulic pump is a very important part of the fine stone concrete pump. Depending on the Origin, there are domestic hydraulic pumps and imported hydraulic pumps; based on the structure of the hydraulic pump, there are gear pumps, vane pumps, and plunger pumps. Hydraulic pumps of the same type are suitable for different pressure levels. Gear pumps are widely used in early fine stone concrete pumps due to their low cost and strong adaptability, but because they have a small pressure capacity and high pulse resistance, they are usually configured in low-pressure pumps or only used in the auxiliary oil circuit system of medium and high-pressure pumps; plunger pumps are divided into disc type and inclined shaft type, and due to their large pressure range, they are currently widely used.