Structural features of circular arc gear pump:
The
circular gear pump adopts the most advanced one-point continuous contact gear, that is, double circular arc and sinusoidal curve, which can completely eliminate the involute gear pump. The circular arc gear is in continuous contact between the two meshing tooth profiles, which will not produce oil trapping phenomenon, which completely solves the phenomenon of vibration, noise and bearing load increase of involute gear pump due to oil trapping phenomenon. Therefore, the arc gear pump has the advantages of low efficiency, low noise and good energy saving effect.
This series of gear pump is mainly composed of gear, shaft, pump body, pump cover, bearing sleeve, shaft end seal and so on. The gear is made of double circular arc sinusoidal tooth profile. Compared with the involute gear, its most outstanding advantage is that the tooth profile has no relative sliding in the process of gear meshing, so the tooth surface has no wear, stable operation, no liquid phenomenon, low noise, long life and high efficiency. The pump gets rid of the shackles of traditional design, which makes the gear pump enter a new field in design, production and use.
The pump is equipped with a safety valve as overload protection, and the total reflux pressure of the safety valve is 1.5 times of the pump discharge pressure. It can also be adjusted separately according to the actual needs within the range of allowable discharge pressure. However, it should be noted that this safety valve can not be used as a pressure relief valve for a long time, and can be installed on the pipeline if necessary.
Pump shaft end seal is designed in two forms, one is mechanical seal, the other is packing seal, which can be determined according to specific use and user requirements. From the extended end of the spindle to the pump, it rotates clockwise.
The method of operation and maintenance of circular gear pump:
1) check the tightness of all pipeline flanges and joints before starting.
2) disk coupling, no friction and collision sound.
3) liquid should be injected into the pump when starting for the first time.
4) the valves in the suction and discharge lines should be fully opened before start-up, and the start-up of closed valves is strictly prohibited.
5) after verifying the rotation direction of the motor, start the motor. The arc gear pump should be repaired and maintained regularly after it has been used for a period of time to ensure the better operation of the arc gear pump.
The valve in the suction and discharge pipeline should be fully opened before starting the circular gear pump, and the start of the closed valve is strictly prohibited. Check the tightness of all pipeline flanges and joints. The liquid should be injected into the pump for the first time. Disc coupling, no friction and collision sound. After verifying the rotation direction of the motor, start the motor.
