In the industrial field, “rotary pumps” provide power for countless devices, driving everything from hemodialysis to 10,000-ton tankers. In fact, the gear pump is one of the most classic and widely used members of the rotary pump category!This article focuses on gear pumps to learn about this master of fluid control deep in industrial equipment.
1. Rotary pump: Fluid control expert in dynamic transmission
(1) What is a rotary pump?
A rotary pump is a type of pump that generates kinetic energy through the continuous rotation of internal mechanical parts to achieve liquid delivery or pressurization. Unlike reciprocating pumps such as piston pumps, its core advantage lies in non-intermittent, low-pulsation fluid transmission.
(2) Working principle: Rotation is power
When the rotor (such as gears, screws, etc.) in the pump rotates at high speed, a closed “liquid chamber” is formed in the pump cavity. As the rotor moves, these chambers move continuously from the suction port to the discharge port, squeezing the liquid through volume changes to achieve stable delivery.
(3) Four core features of rotary pumps
① High efficiency and energy saving:
Continuous rotation structure reduces energy loss
② Low pulse:
Smooth liquid flow and protect downstream equipment
③ Strong medium adaptability:
Can deliver high-viscosity and particle-containing liquids
④ Compact and durable:
Simple structure and low maintenance cost
(4) Different types of rotary pumps
① Gear pump
② Vane pump
③ Cam pump
④ Screw pump
2. Gear pump: Master of fluid control with precise meshing
① Liquid suction stage:
When the gears disengage, the volume increases to form a vacuum, and the liquid is sucked in
② Liquid transfer stage:
The gears seal the liquid in the closed space formed by the tooth grooves and the pump body
③ Liquid discharge stage:
When the gears mesh again, the space is squeezed and the liquid is forcefully discharged
3. Six performance advantages of gear pumps
① Extremely compact structure
② High-pressure output expert
③ Excellent self-priming performance
④ Strong media compatibility
⑤ Accurate flow control
⑥ Simple and economical maintenance
4. Golden application scenarios of gear pumps
① General industry: inkjet printers, textile machines, etc.
② Food industry: coffee equipment, soft ice cream equipment, etc.
③ Medical industry: dialysis equipment, IVD, etc.
④ Water quality testing: sewage treatment, fluid transportation of online monitoring systems, laboratory analysis equipment, etc.
⑤ Liquid cooling technology: super charging piles, data centers, new energy battery cooling, etc.
⑥ Engineering machinery: the power core of the hydraulic system
⑦ Automobile manufacturing: automatic transmission oil pressure control
⑧ Energy field: heavy oil transportation, lubricating oil pressurization
⑨ Aerospace: liquid fuel transmission, etc.
