The gear pump produced by Saiken Pump is equipped with a differential pressure safety valve as overload protection, and the total return pressure of the safety valve is 1.5 times the rated discharge pressure of the pump. It can also be adjusted according to actual needs within the allowable discharge pressure range. However, this safety valve cannot be used as a pressure reducing valve for a long time, and can be installed on the pipeline when necessary. The following describes the principle of the gear pump:
Gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gear to transport liquid or pressurize it.
The structure of the external gear pump. A pair of meshing gears and pump cylinders separate the suction chamber from the discharge chamber. When the gear rotates, the volume between the teeth where the teeth on the suction cavity side disengage from each other gradually increases, the pressure decreases, and the liquid enters the teeth under the action of the pressure difference. As the gear rotates, the liquid between the teeth is brought to the discharge chamber. At this time, the volume between the teeth of the gear teeth on the discharge cavity side gradually decreases, and the liquid is discharged.
Gear pumps are suitable for transporting lubricating liquids that do not contain solid particles, are non-corrosive, and have a large viscosity range. The flow rate of the pump can reach 300 m3/h, and the pressure can reach 3×107 Pa. It is usually used as a hydraulic pump and conveying various oil products. The gear pump has a simple and compact structure, easy manufacture, convenient maintenance, self-priming capability, but large flow and pressure pulsation and high noise. The gear pump must be equipped with a safety valve to prevent damage to the pump or prime mover due to some reasons, such as blockage of the discharge pipe, which causes the outlet pressure of the pump to exceed the allowable value. Gear oil pump manufacturers and suppliers
