Hydraulic pump parts

There are many parts of hydraulic pumps, and here are some of the main ones:

 First, Power Input Components

 1. Drive shaft: connect the prime mover (such as motor and engine) with the hydraulic pump, and transmit the mechanical energy of the prime mover to the hydraulic pump to make the components in the pump run.
 2. Coupling: It is used to connect the drive shaft and the output shaft of the prime mover, which plays the role of transmitting torque, compensating the relative displacement of the two shafts and buffering and damping.

 Second, the structural parts of the hydraulic pump body

 1. Pump casing: It is the shell of the hydraulic pump, which is mainly used to accommodate and protect various internal parts, and at the same time guide the flow direction of the liquid.
 2. Cylinder block: It is a key component of hydraulic pumps such as plunger pumps, with multiple plunger holes inside, in which the plunger reciprocates and moves to achieve the functions of oil suction and oil discharge.

 Third, moving parts

 1. Plunger: cooperate with the cylinder block, do reciprocating motion in the cylinder body, and realize oil absorption and oil pressure through the change of volume between the plunger and the cylinder bore.
 2. Rotor: It is more common in vane pumps and gear pumps, and the rotor is equipped with blades or gears to promote the flow of liquid by rotation.
 3. Blades: installed in the rotor groove of the vane pump, with the rotation of the rotor, the blades expand and contract in the rotor groove under the action of centrifugal force and hydraulic pressure, and form a variable volume with the inner surface of the stator to achieve the functions of oil absorption and oil discharge.

 Fourth, Sealing parts

 1. Sealing ring: used to prevent hydraulic oil leakage in the pump, the common ones are O-ring, Y-ring, V-ring, etc., which are installed in the piston, plunger, pump shaft and other parts of the cylinder or pump shell.
 2. Gasket: Usually made of rubber, asbestos or metal and other materials, it is used to seal the joint surface of the pump casing, the connection between the end cover and the pump body, etc., to prevent oil leakage and external impurities from entering.

 Fifth, Control parts

 1. Safety valve: When the pressure in the hydraulic system exceeds the set value, the safety valve is opened to return the excess oil to the oil tank to protect the components in the hydraulic system from the damage of excessive pressure.
 2. Flow control valve: used to adjust the flow output of the hydraulic pump to meet the speed requirements of different working parts.

 Sixth, Accessories

 1. Oil filter: installed at the suction port or return port of the hydraulic pump, which is used to filter impurities, particles and pollutants in the hydraulic oil, ensure the cleanliness of the hydraulic oil, and prevent impurities from entering the pump to cause wear or blockage.
 2. Cooler: In some high-power hydraulic systems, the hydraulic pump will generate a lot of heat when working, and the cooler is used to reduce the temperature of the hydraulic oil to ensure the normal working temperature range of the hydraulic system.

Hydraulic pump parts list

Hydraulic pump parts catalog