What are the reasons for a gear pump failing to build up pressure?

1 Answers
AuroraMarie
07/29/25 9:56pm
Gear pump failing to build up pressure is due to: 1. The oil temperature is too low, reducing the viscosity of the oil: Under normal temperature, the oil is in a solid-liquid state. Once the temperature drops, the oil tends to solidify; 2. The oil level is too low; 3. The suction pipe is blocked: The smoothness of the suction pipe is a prerequisite to ensure that the metering diaphragm can suck in the oil. If the suction pipe is blocked by foreign objects, the oil pump cannot pump out oil. 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 gears to transport liquid or pressurize it. The volume of the space on the disengaged side increases from small to large, creating a vacuum to suck in the liquid. The volume of the space on the meshing side of the gears decreases from large to small, squeezing the liquid into the pipeline.
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