HGP-3A-F25R series HYDROMAX oil gear pump

HGP-3A Gear Pump function well under high temperature with Viton’s seal. It can also run under high pressure with the oil less bearing design.

Model Definition

Specification

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What is the gear pump working principle

 

Gear pump: by two gears meshing together and constitute the pump known as gear pump. It is dependent on the gear tooth meshing space volume change to transport liquid, it belongs to rotary pump, can also be considered to belong to the volume pump. Gear pump type more. According to the meshing mode can be divided into external meshing gear pump and internal meshing gear pump; Gear teeth can be divided into gear pump, oblique gear pump and herringbone gear pump.

 

Gear pump working principle and structure

 

External gear pump is one of the most widely used gear pump, the general gear pump usually refers to the external gear pump. Its structure is mainly composed of driving gear, driven gear, pump body, pump cover and safety valve. Pump body, pump cover and gear constitute a sealed space is the gear pump studio. The shafts of the two gears are mounted in the bearing holes of the two pump covers respectively. The driving gear shaft extends out of the pump body and rotates with the motor. The external gear pump is simple in structure, light in weight, low in cost, reliable in operation and wide in application.

 

When the gear pump works, the driving wheel rotates with the motor and drives the driven wheel to rotate with it. When the meshing teeth on one side of the suction chamber are gradually separated, the volume of the suction chamber increases and the pressure decreases, and then the liquid in the suction tube is sucked into the pump. The suction liquid is divided into two ways and is pushed by the gear in the alveolar to the discharge chamber. After the liquid enters the discharge chamber, as the teeth of the two gears are constantly engaged, the liquid is squeezed from the discharge chamber into the discharge tube. With the driving and driven gears turning continuously, the pump can continuously draw in and out liquids.

 

The pump body is equipped with a safety valve. When the discharge pressure exceeds the specified pressure, the liquid can be automatically pushed open to make the high-pressure liquid return to the suction pipe.

 

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Gear pump purchase need to pay attention to what? ZF hydraulic remind you:

 

1 if the bulk purchase of gear pump, must choose the regular gear pump manufacturers! (for example: ZF hydraulic)

 

2 to buy gear pump must sign a formal contract with the manufacturers!

 

3. Before purchasing gear pump in large quantities, be sure to let the manufacturer make prenatal sample confirmation!

 

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Gear pump gear and ordinary transmission gear is the same

 

Gear pump gear needs to occlusal clearance smooth and small, and to withstand pressure, wear resistance and high temperature, their materials are not the same, oil pump gear generally with 20CrMnMo, and transmission gear materials are not so many requirements. The machining precision between the two is not the same, gear pump gear requirements to achieve more than 7G accuracy, and the general as long as 10G or so can be.