Overview of the Operating Principle of khp series gear pump product

The total stroke L of the reciprocating motion of the plunger of the khp series gear pump product is constant and is determined by the lift of the CAM. The amount of oil supply for each cycle of the plunger depends on the oil supply stroke, which is not affected by the CAM

The axis control is variable. The start time of fuel supply does not change with the variation of the fuel supply stroke. Rotating the plunger can change the end time of fuel supply, thereby altering the fuel supply weight. The khp series gear pump product works

At this time, under the action of the CAM on the camshaft of the fuel injection pump and the plunger spring, the plunger is forced to move up and down reciprocally, thereby completing the fuel pumping task. The fuel pumping process can be divided into the following two parts

This is a stage. Overview of the Operating Principle of khp series gear pump product

Oil intake process

When the protruding part of the CAM turns over, under the action of the spring force, the plunger moves downward. A vacuum degree is generated in the upper space of the plunger (referred to as the pump oil chamber). When the upper end of the plunger

After opening the oil inlet hole on the plunger sleeve, the diesel oil filled in the oil passage of the upper body of the oil pump enters the oil pump chamber through the oil hole. When the plunger moves to the bottom dead center, the oil inlet is completed

Overview of the Operating principle of the khp series gear pump product in the oil return process

The plunger supplies oil upwards. When it reaches the inclined groove (stop supply side) on the plunger and communicates with the return oil hole on the sleeve, the low-pressure oil circuit in the pump oil chamber connects with the middle hole and the radial direction at the head of the plunger

The holes and chutes communicate, causing a sudden drop in oil pressure. Under the action of the spring force, the oil outlet valve closes rapidly and stops the oil supply. After this, the plunger still needs to move upward when the protruding part of the CAM turns over

Then, under the action of the spring, the plunger moves down again. At this point, the next cycle begins. The khp series gear pump product is introduced based on the principle of a plunger. There are two check valves on one khp series gear pump product.

And in the opposite direction, when the plunger moves in one direction, negative pressure occurs in the cylinder. At this time, a check valve opens and the liquid is drawn into the cylinder. When the plunger moves in the other direction, the liquid

After the body is compressed, another check valve is opened and the liquid sucked into the cylinder is discharged. This working mode forms continuous fuel supply after continuous movement.

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