This pump element is the part for used for the electric lubrication grease pump of DDRB-N, ZB series, to absorb the grease or oil and pressurized it into grease tubes.
Working Principle Of Multi-Point DDRB Pump ZB Pump Element
When the driving wheel pulls the working piston 1 to the left limit position, the grease/oil inlet port is opened and the lubricant is sucked into the cavity of the piston sleeve 2, at the same time, the control piston 3 is moved to the left by the action of the spring to the limit position. When the piston 1 moves to the right, the control piston 3 is moved to the right side.
When the grease/oil chamber in the control piston connects to the annular groove at the right end of the piston sleeve, the grease is pressed out and open the check valve 4 which is discharged from the oil outlet. As the eccentric shaft is constantly rotating, the grease lubricant and then continue in turn and out from the outlet port.
1. Element Piston ; 2. Pump Element Housing ; 3. Working Element Piston ; 4. Connector With Check Valve
Grease or Oil Volume Adjustment By Injector:
Loosen and take out the screw cap, to adjust the flow adjusting bolt with screwdriver to adjust the amount of extension to achieve the amount of grease. If the adjustment blot turns clockwise, the amount of grease/oil is reducing, if counter-clockwise rotation will increase the volume. The screw cap should be covered after the adjustment finished.