Introduction And Working Principle of KOMATSU Electric Lubrication Pump

Introduction 

KOMATSU electric lubricant pump consists of pump body, vertical chassis, power forced lubrication type bearing sleeve shaft, electric lubricating oil pump safety valve and backflow type rubber oil seal and other components.

Function

KOMATSU electric lubricant pump conveying medium temperature is 30°C- 120°C, viscosity not more than 50mm2/S without solid particles impurities of mechanical oil, turbine oil and other media with similar lubricating properties. The electric lubricating oil pump is mainly used for transporting lubricating oil in the lubrication system of various mechanical equipment and is suitable for transporting lubricating oil with viscosity below 10.E (75 C.S.t) and temperature below 300°C.

Structure

KOMATSU electric lubricant pump mainly consists of pump body, gears, shaft, bearings, front and back cover, sealing parts, couplings and other components. There are two forms of shaft end seal: gland packings and mechanical seal.

The Working Principle

1. Engaged gears in the pump body rotation, gear teeth constantly into and out with the mesh. In the suction chamber, the gear teeth gradually withdraw from the state of engagement, so that the volume of the suction chamber gradually increases, the pressure decreases, the liquid enters the suction chamber under the action of the liquid surface pressure, with the gear teeth into the discharge chamber. In the discharge chamber, the gear teeth gradually enter the engagement state, the gear teeth are gradually occupied by a gear teeth, the volume of the discharge chamber decreases, the discharge chamber liquid pressure rises, so the liquid from the pump outlet is discharged out of the pump, gear side rotation, the above process continues, forming a continuous oil delivery process.

   
   

2. The gear-down motor is fixed to the flange connection of the pump unit and drives the sliding fork for linear reciprocating motion by driving the eccentric shaft, and drives the spiral oil pressure plate and scraper plate to rotate clockwise, and the softened grease is evenly pressed around the suction port of the pump unit by stirring. There are two sets of pistons in the body, each set of pistons consists of working pistons and control pistons, when the working piston in one set of pistons completes the oil absorption process, the working piston in the other set of pistons presses the grease towards the oil outlet. When the fork moves to the left, the upper group of pistons finishes sucking oil and the lower group of pistons finishes pressing oil, starting a new working cycle. At this time the lower group piston moves to the left, the piston reaches the limit position under the action of the spring force to close the outlet, and the piston continues to move to the left, then the vacuum between the pistons, the vacuum increases with the left movement of the piston, the sliding fork movement to the limit position piston open suction port, grease from the suction port inhalation, such as spring force is not enough, did not push the piston to the limit position, then the pushrod will be forced in the sliding fork pushes the piston to the limit position. At the same time, the upper group of pistons move to the left, the pistons first close the suction port, the grease is sucked in the pistons to move to the left when the pistons open the oil outlet, the pistons and push rod movement will stop, the pistons continue to move to the left, the grease from the outlet, the pistons contact fork has also moved to the limit position to complete half of the cycle, so the cycle, two groups of pistons alternately will The lubricating grease is pressed out from the outlet and filtered through the filter on the connection flange of the pump unit and then supplied to the system.