The working principle of gear pumps (volumetric suction and discharge, quantitative high pressure, adaptability to high viscosity, strong self-priming ability) determines that they can adapt to the needs of "stable fluid transportation, especially in viscous/high-pressure scenarios" in daily life - from cars for daily travel, to industrial production, food processing, and even outdoor work tools, the practical application of their principles can be seen. The following are common scenarios that combine principles, clearly reflecting the core logic of "vacuum suction, extrusion discharge, and quantitative conveying":

1、 Daily travel: the "core power/lubrication guarantee" of automobiles/construction machinery

This is the most practical application of gear pumps in daily life, directly related to the normal operation of vehicles. The core utilizes the principle of "high-pressure delivery and quantitative lubrication":

1. Fuel supply and lubrication system of automobiles

Fuel pump (some models): Diesel engines (such as trucks, diesel sedans) or some older gasoline vehicles may use gear type fuel pumps. Principle application: The motor drives the gear to rotate, and the oil suction port sucks in fuel from the fuel tank through vacuum negative pressure. The oil discharge port is pressurized through gear meshing (pressure reaches 0.3~0.8MPa), and the fuel is stably delivered to the fuel injector to meet the combustion needs of the engine.

Oil pump: The core component of all automotive engines, which must use a gear pump (or rotary pump, with the same principle). Principle application: The gear rotates to suck oil from the oil pan, which is then compressed and pressurized before being quantitatively delivered to the clearances of moving parts such as the engine crankshaft, camshaft, and piston, forming an oil film lubrication (reducing wear) while taking away heat - "quantitative" ensures that each component receives sufficient oil, and "high-pressure" ensures that the oil can reach the deep parts of the engine.

2. Hydraulic systems for construction machinery (excavators, loaders, forklifts)

Scenario: The bucket extension and retraction of excavators, the lifting of loaders, and the lifting of forklifts all rely on hydraulic oil to provide power.

Principle application: The gear pump serves as the "power source" of the hydraulic system. The motor/engine drives the gears to rotate, and low-pressure hydraulic oil is sucked in from the hydraulic oil tank. Through meshing and squeezing, the high-pressure hydraulic oil is pressurized (with a pressure of up to 10-30 MPa) and delivered to the hydraulic cylinder/hydraulic motor, converting fluid pressure energy into mechanical force to drive mechanical action. The core here utilizes the principles of "high-pressure transmission" and "flow stability" (ensuring smooth and uninterrupted operation).

2、 Life services: daily equipment related to "fluid transportation"

This type of scenario directly serves daily life, utilizing the principles of "self-priming ability, quantitative delivery, and adaptation to medium viscosity":

1. Small oil transportation equipment at gas stations/oil depots

Scenario: Oil tanker unloading, gas station refilling oil storage tanks, household/agricultural machinery refueling (small mobile fuel pump).

Principle application: Small gear pumps do not require pump filling (strong self-priming ability). After starting, the gears rotate to suck in gasoline/diesel, and the oil is transported to the target container through extrusion and discharge. The flow rate is stable (can roughly measure the amount of fuel added), avoiding leakage or splashing - perfectly adapting to the needs of "long-distance suction and stable transportation".

2. Small household/industrial lubrication tools (butter gun, electric grease pump)

Scenario: Apply lubricating grease (butter, high viscosity fluid) to bicycle chains, door locks, agricultural machinery bearings, and motor shafts.

Principle application: Manually/electrically driven gears rotate, the oil suction port sucks in viscous lubricating grease through vacuum negative pressure, and the oil discharge port pushes out the grease body under high pressure through gear compression (pressure can reach tens of MPa), injecting it into narrow component gaps - the core uses the principles of "adapting to high viscosity" and "high-pressure compression" to solve the problem of difficult transportation of viscous fluids.

3. Food processing: transportation of sauces/dairy products (sanitary gear pump)

Scenario: Tomato sauce and salad dressing filling in supermarkets, milk/yogurt production line conveying, cream/chocolate sauce conveying in cake shops.

Principle application: Sanitary grade gear pump (made of 316L stainless steel material, with no dead corners structure) sucks in viscous food raw materials through gear rotation, and delivers them quantitatively to filling equipment or production lines - "quantitative" ensures consistent capacity of each bottle of sauce, "sealed delivery" avoids pollution, and "suitable for high viscosity" just to deal with difficult to flow fluids such as sauce and cream.

3、 Industrial production: the 'behind the scenes application' of indirect service to life

Although these scenarios do not involve direct contact, the product ultimately serves daily life, utilizing the principle of "corrosion resistance, high pressure, and adaptability to special fluids" as its core:

1. Production and spraying of coatings/inks

Scenario: Furniture factories spray paint on panels, printing factories print ink on paper sheets, and high-pressure airless spraying machines during decoration.

Principle application: Gear pump (solvent resistant material) sucks in viscous paint/ink, and through compression and pressurization (pressure 5-20MPa), stably delivers the fluid to the spray gun - "stable flow" ensures uniform spraying without spots, "suitable for high viscosity" to deal with the viscosity characteristics of paint and ink, "corrosion-resistant" to avoid solvent corrosion.

2. Construction industry: Asphalt/waterproof coating transportation

Scene: Asphalt paving during road paving, and waterproof coating application during house waterproofing.

Principle application: High temperature gear pump (resistant to temperatures above 200 ℃) sucks in molten asphalt (high viscosity, high temperature) and transports it to paving or spraying equipment through rotation. "Adapting to high temperature and high viscosity" is the core, and the gear pump can stably suction and discharge at high temperatures to avoid asphalt clumping and blockage, while "high-pressure transportation" ensures the continuity of paving/painting.

3. Pharmaceutical/daily chemical: transportation and filling of medicinal liquids, toothpaste, and shampoo

Scenario: Drug dispensing and transportation in pharmaceutical factories, toothpaste filling in toothpaste factories, and raw material transportation in shampoo production lines.

Principle application: Sanitary/corrosion-resistant gear pump, capable of inhaling medicinal liquids, toothpaste paste (high viscosity), shampoo (medium viscosity), and quantitatively delivering them to filling bottles - "precise quantification" ensures consistent product capacity, "sealed without residue" avoids contamination of pharmaceutical/daily chemical products, and "adaptable viscosity range" can accommodate raw materials in different states.

4、 Special scenario: practical applications for outdoor/emergency situations

1. Fuel/lubrication transportation for ships/agricultural machinery

Scenario: Fuel supply (diesel, heavy oil) for fishing boats and cargo ships, oil lubrication and fuel delivery for agricultural machinery (tractors, harvesters).

Principle application: The "strong self-priming ability" of the gear pump is suitable for long-distance suction of ships/agricultural machinery (with a long distance between the fuel tank and the pump body), the "simple structure and vibration resistance" can adapt to harsh working conditions such as sea and field turbulence, and the "high-pressure delivery" meets the fuel injection requirements of the engine.

2. Emergency pumping/oil pouring tool (manual gear pump)

Scenario: Pouring oil into the car fuel tank, outdoor emergency pumping of river water (small amount), and refilling the oil tank of agricultural machinery.

Principle application: The manual gear pump drives the gears to rotate by hand, uses the vacuum suction principle to suck in oil/water, and then discharges the liquid through squeezing - no power supply required, strong self-priming ability, simple operation, suitable for outdoor emergency scenarios without electricity.

Core Logic Summary

All applications are closely related to the working principle of gear pumps:

High viscosity fluids (lubricating grease, asphalt, sauce) are required to solve the problem of difficult flow of viscous fluids by using "inter tooth groove sealing carrying+extrusion conveying";

High pressure conveying (hydraulic system, spraying) is required → using the "gear meshing extrusion volume" to increase the fluid pressure to the working pressure;

Accurate quantification (filling, lubrication) is required → using "fixed displacement per revolution" to ensure stable flow;

Self suction/no filling pump is required (emergency pumping, long-distance oil suction) → Use the "suction stage vacuum negative pressure" to start without filling the fluid in advance.

Simply put, as long as stable, quantitative, and high-pressure transportation of viscous/special fluids is needed in daily life, the working principle of gear pumps is likely to be used behind it.