Principle of hydraulic pump of hydraulic pump
There are three kinds of pump structure used in hydraulic system: gear pump, vane pump and plunger pump. Gear pump: small volume, simple structure, low demand for oil and low price; But the pump shaft is unbalanced, the wear is serious, the leak is bigger. Vane pump: it is divided into double acting vane pump and single acting vane pump. The pump flow is uniform, smooth running, low noise, high pressure and volumetric efficiency, more complex than the gear pump, the structure is more complicated than the gear pump. Hydraulic pump internal structure drawing plunger pump: high efficiency, low leakage, high pressure and high power hydraulic system. But the structure is complex, the material and the processing precision is high, the price is expensive, the cleanliness of oil is high. The plunger pump is used only when the gear pump and vane pump are not able to meet the requirements. There are other forms of hydraulic pumps, such as a screw pump, but the application is not as common as these three. It is made of aluminum alloy, high strength, corrosion resistant, light weight and suitable for all kinds of environment. The two-speed feature reduces the number of crackdowns and is rapidly under load in the low pressure chamber, which is immediately converted to high voltage, shortening the working cycle. Equipped with pressure regulating valve, adjustable control and set pressure.
Can be divided into: variable pump and quantity pump. The output flow can be adjusted as needed to be called a variable pump, which is called a quantitative pump.
A hydraulic component that provides a pressurized liquid for hydraulic transmission. It is a type of pump. Its function is to transform the mechanical energy of the engine (such as motor and internal combustion engine) into liquid pressure. The working principle of single plunger pump in the picture. The CAM is spun by an electric motor. When the CAM drive plunger upward movement, the piston and cylinder form sealing volume decreases, and the oil from the seal volume extrusion, the check valve to where they are needed. When the CAM rotates to the down part of the curve, the spring force plunger downward, form a certain vacuum degree, oil tank of oil under the action of atmospheric pressure into the sealing capacity. The convex wheel keeps the plunger up and down, the seal volume decreases and increases periodically, and the pump absorbs oil and oil.
A hydraulic component that provides a pressurized liquid for hydraulic transmission, a type of pump. Its function is to transform the mechanical energy of the engine (such as motor and internal combustion engine) into liquid pressure. Many factors affect the service life of the hydraulic pump, in addition to pump their own design and manufacture factors and some related to the pump use components (such as coupling, filter, etc.) in the process of selection, commissioning operation of operation, etc. Also have relations. The hydraulic pump works by moving the volume of the pump chamber, which compresses the fluid and makes the fluid pressure energy. The necessary condition is that the pump chamber has a seal volume change. Hydraulic pump is the power of the hydraulic system components, which is driven by the engine or motor, suction pressure oil from the hydraulic oil tank, formation pressure oil discharge, a components to the implementation of the components. Hydraulic pump is divided into gear pump, plunger pump, vane pump and screw pump. Common type of hydraulic pump:
