What are the advantages of hydraulic gear pumps?

A 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 convey or pressurize the liquid. The two closed spaces are composed of two gears, the pump body and the front and rear covers. When the gears rotate, the volume of the space on the disengagement side of the gear changes from small to large, forming a vacuum, the liquid is sucked in, and the volume of the space on the gear meshing side changes from large. Small, squeeze the liquid into the pipeline. The suction chamber and the discharge chamber are separated by the meshing line of the two gears. The pressure at the outlet of a gear pump depends entirely on the amount of resistance at the pump outlet.

Structural features

• Simple structure and cheap price;

• Low work requirements and wide application;

• The end caps and the interdental grooves of the gears make up several fixed, sealed working chambers, which can only be used as quantitative pumps. The gear adopts the international advanced technology of the 1990s-double arc sine curve tooth arc.

The advantages of hydraulic gear pumps

• The volumetric efficiency of the high-pressure gear pump can reach 95%, which is an energy-saving product (common gear pumps are generally between 50% -80%).

• The rotating parts in the high-pressure gear pump are made of special alloy materials. Generally, the anti-impurity ability is not easy to wear.

• The high-pressure gear pump has a good appearance and is easy to machine. Its appearance is a rectangular five-piece combination.

• The high-pressure gear pump has low noise, and the noise value at the maximum load can reach the standard A of the product (ordinary gear pumps are generally in the standard B and C).

• The high-pressure gear pump can work at constant pressure at low speed (125r / min), and the volumetric efficiency can still reach more than 85%, which is beyond the reach of ordinary precision gear pump.

• The body and cover surface of the high-pressure hydraulic gear pump have no paper gap between the surface and the surface, and the seal is excellent. The end face clearance of the gear is all guaranteed by the size and appearance accuracy of the parts. The pump seal adopts a multi-stage combined sealing system, and the probability of oil leakage at the pump shaft end is very low.

• High-pressure hydraulic gear pump suction head can reach 8m, which belongs to high-suction gear pump. During the type test, the pump can still work normally when the suction port of the pump is -0.085MPa.