Liquid Filling Machine

As a professional manufacturer and supplier in China, Shilong provides advanced liquid filling machine solutions designed for precise, efficient, and hygienic packaging across food, beverage, pharmaceutical, and chemical industries. This liquid filling machine ensures stable performance, accurate dosing, and scalable production for both small and large operations.

Product Types

1. Atmospheric Pressure (Gravity) Liquid Filling Machine

Principle: Fills containers by gravity flow of liquid under atmospheric pressure, controlled by time or fixed volume.

Advantages: Simple structure, low cost, easy to clean, low energy consumption.

Applications: Low-viscosity, non-gaseous and non-easily oxidized liquids such as mineral water, liquor, soy sauce, vinegar and milk.

2. Negative Pressure (Vacuum) Liquid Filling Machine

Principle: Creates vacuum (below atmospheric pressure) in containers first, then fills by pressure difference with consistent liquid level.

Advantages: Stable filling, drip-proof, oxidation-resistant, suitable for narrow-mouth bottles, good accuracy (±0.3%).

Applications: Oral liquids, essential oils, pesticides, red wine, easily oxidized medical liquids and small-dose liquids.

3. Piston (Plunger) Type Liquid Filling Machine

Principle: Driven by servo or air cylinder for piston reciprocation, measures by fixed cavity volume and forces filling.

Advantages: Extremely high accuracy (±0.2%~0.5%), wide viscosity adaptability (1~10000mPa·s), suitable for liquids with fine particles.

Applications: Honey, syrup, sauces, shampoo, laundry detergent, creams, edible oil and viscous medical liquids.

4. Flow Meter Type Liquid Filling Machine

Principle: Real-time flow measurement via electromagnetic, gear or mass flow meters, valve control by PLC, dynamic metering.

Advantages: Wide measuring range, no part replacement for volume adjustment, high speed, easy CIP cleaning.

Applications: Lubricating oil, detergents, beverages, chemical solvents, bottled water and low-viscosity liquids.

5. Weighing Type Liquid Filling Machine

Principle: Real-time net weight measurement by load cells, stops filling when set value is reached.

Advantages: Highest accuracy (±0.1%~0.2%), unaffected by container, viscosity or temperature, ideal for high-value materials.

Applications: Edible oil, lubricating oil, chemical raw materials, medical stock solutions, large barrels and ton barrels.

6. Pressure (Isobaric/Pressurized) Liquid Filling Machine

Principle: Pressurized or isobaric filling in material storage cylinder, suitable for carbonated liquids to retain CO₂.

Advantages: Fast filling, stable carbonation, reduced foaming.

Applications: Beer, soda water, champagne, carbonated beverages and volatile liquids.

Core Technical Parameters

Core Steps for Model Selection

1. Define Material Properties: viscosity, gas/particle content, corrosiveness, hygiene grade (food GMP/pharmaceutical)

2. Confirm Container Specifications: bottle shape, caliber, volume, material (glass/PET/plastic barrels)

3. Balance Accuracy & Speed: weighing/servo piston type for high-value/pharmaceutical liquids; atmospheric pressure/flow meter type for ordinary beverages

4. Consider Budget & Site Space: Semi-automatic 10,000~50,000 RMB; Fully automatic 40,000~200,000 RMB; Complete line 200,000~800,000 RMB

5. Match Supporting Equipment: capping machine, labeling machine, conveyor, sealing machine, CIP cleaning system, explosion-proof/corrosion-proof devices

Product Application

Food & Beverage: mineral water, liquor, red wine, soy sauce, vinegar, edible oil, fruit juice

Daily Chemicals: shampoo, body wash, laundry detergent, hand sanitizer, essence, perfume

Pharmaceutical: oral liquids, injections, syrups, disinfectants, reagents

Chemical Industry: lubricating oil, antifreeze, pesticides, solvents, coatings