Hydraulic pump parts

Hydraulic pumps are usually composed of the following types of parts, Let's get to know hydraulic pump parts together.

First, Power Input parts
  1. Coupling: used to connect the drive shaft and the pump transmission shaft, the common ones are rigid coupling and elastic coupling, which requires the two-axis coaxiality error to be within a certain range. 
  2. Drive shaft: transmit power from the power source to the internal parts of the pump, which is the key channel for power input, and needs to have sufficient strength and wear resistance. 

Second, pump body parts
  1. Shell: As the shell of the hydraulic pump, it plays the role of supporting and protecting the internal parts, and is also the holding cavity of the oil, usually made of cast iron, aluminum alloy and other materials. 
  2. End cover: installed at both ends of the shell, used to close the pump chamber, fix the internal parts, prevent oil leakage, and the accuracy of the shell is high. 

Third, moving parts
  1. Gear: The core moving part of the gear pump is composed of a pair of gears that mesh with each other, and the oil is suction and discharged through the rotation of the gear.

2. Blades: In the vane pump, the blades are installed in the rotor groove, and when the rotor rotates, the blades stretch out or retract under the action of centrifugal force and oil pressure to realize the transportation of oil. 
  3. Plunger: the key component of the plunger pump, the plunger moves reciprocating in the cylinder body, and absorbs and discharges oil through the change of the sealing volume between the plunger and the cylinder body. 

Fourth, Sealing parts
  1. Sealing ring: used to prevent oil leakage, the common ones are O-rings, Y-rings, V-rings, etc., which are installed on the various joint surfaces and shaft holes of the pump body to ensure the tightness of the hydraulic system. 
  2. Oil seal: It is mainly used for sealing the pump shaft to prevent oil from leaking from the pump shaft to the outside, and can also prevent external impurities from entering the pump and prolong the service life of the pump. 

Fifth, Control parts
  1. Pressure regulating valve: the working pressure can be adjusted to control and set, so that the pressure output of the hydraulic pump can meet the working requirements of the system. 2. Flow control valve: used to adjust the output flow of the hydraulic pump to meet the demand of the system for flow under different working conditions, which is divided into various forms such as manual adjustment and automatic adjustment.
  In addition to the above main parts, the hydraulic pump has some other parts, such as:
  1. Cylinder block: In some hydraulic pumps, the cylinder block is a very important part, which accommodates the plunger or piston, so that they can do reciprocating motion in it.
  2. Eccentric wheel: In some piston pumps, the eccentric wheel can be used to change the trajectory of the plunger, so that the plunger can better complete the action of oil suction and drainage.
  3. Plunger: The plunger is the "key man" in the plunger pump, which does reciprocating motion in the cylinder body and realizes oil absorption and oil discharge by changing the volume of the pump chamber.
  4. Spring: Spring can play a lot of roles in hydraulic pumps, such as it can be used to reset the plunger, maintain the tightness of the sealing device, etc.

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