Gravity Liquid Filling Machine
Industrial Inline Gravity Liquid Filling Machine
An inline gravity liquid filling machine controls dispense volume through precise timed liquid release or fixed-head pressure, relying strictly on gravity feed. Designed exclusively for free-flowing, low-viscosity liquids (< 100 cPs), this system eliminates complex pump mechanisms, reducing shear stress and foaming during the fill cycle.
Timed-gravity flow or float-valve regulated constant level.
4 to 12 synchronized pneumatic filling nozzles.
Water-like to light oils (1 - 100 cPs).
PET bottles, HDPE jugs, glass containers (neck diameter 10 mm - 80 mm).
Technical Specifications & Configuration Matrix
|
Specification Item |
Standard Parameters |
Engineering Notes / Options |
|
Nozzle Count |
6 / 8 / 10 / 12 Spouts |
Custom spacing adjustable via lead screw |
|
Contact Parts Material |
AISI 316L Stainless Steel |
AISI 304 frame construction |
|
Filling Accuracy |
+/- 0.5% to +/- 1% (dependent on product uniformity) |
Timed PLC control via micro-second solenoid valves |
|
Sealing Materials |
PTFE / Viton (FKM) |
EPDM or NBR available for specific chemical compatibility |
|
Control System |
PLC + 7-inch HMI Touch Screen |
Multi-recipe storage, manual/auto shift |
|
Pneumatic Supply |
0.6 - 0.8 MPa, clean dry air |
Air consumption: 120 L/min |
|
Power Requirements |
AC 220V/380V, 50/60Hz, 3-phase |
Explosion-proof motors optional (ATEX/Classified Zone) |
Application Suitability & Limitations
Ideal Applications
Beverages & Edible Oils: Drinking water, juice, wine, olive oil, sunflower oil.
Chemical & Household: Dish soap, window cleaner, thin fertilizers, windscreen washer fluid.
Personal Care: Liquid hand wash, low-viscosity lotions, alcohol-based sanitizers.
Operating Limitations
High Viscosity: Fluids exceeding 100 cPs (e.g., thick honey, hair gels, heavy creams) restrict gravity flow rates; choose a Piston Filling Machine or Peristaltic Pump Filler instead.
Heavy Foaming Liquids: Uncontrolled foaming agents require bottom-up diving nozzles with variable-speed ramp profiles.
Engineering Differentiation & Material Integrity
Anti-Drip Nozzle Assembly: Equipped with internal spring-loaded check valves and vacuum-suckback clearance channels. This prevents post-fill droplet formation, protecting container exteriors and conveyor tracks from chemical pooling.
Constant-Level Buffer Tank: An integrated top-mounted float valve or overflow return loop stabilizes head pressure, ensuring consistent flow rates across every fill cycle regardless of supply barrel fluctuation.
Tool-Free Quick Changeover: Nozzle blocks utilize sanitary tri-clamp connections. Adjusting rail guides and container indexing stoppers requires zero hand tools, reducing product-to-product changeover downtime to under 15 minutes.
Surface Finish: Product contact surfaces undergo mechanical polishing followed by passivation, achieving a roughness average (Ra) of <= 0.4 um to prevent bacterial accumulation and chemical residue retention.
Quality Control & Compliance Standards
Hydrostatic Pressure Testing: Fluid manifolds undergo a 1.5x operating pressure test for 30 minutes prior to assembly release.
Electrical Safety: Control panels are wired to NFPA 79 or IEC 60204-1 standards using terminal-numbered, wire-ducted industrial harnesses.
Certificates Supplied: Material Test Reports (EN 10204 3.1 for SS316L contact parts), CE Declaration of Conformity, and PLC source code backup documentation.
Frequently Asked Questions
Q: How does the machine handle foaming liquids like light detergents?
A: Gravity filling causes mild agitation. For standard foaming liquids, we integrate adjustable pneumatic shut-off needles and programmable slow-start pre-dosing to minimize turbulence. For severe foaming formulations, a bottom-up diving nozzle module must be specified.
Q: What is the typical lead time for standard versus customized units?
A: Standard 8-nozzle units in stock configurations require 3 to 4 weeks. Fully custom nozzle spacing, specialized seal elastomers, or integration into existing conveyor lines require 6 to 8 weeks following drawing sign-off.
Q: What utilities must be prepared on-site prior to installation?
A: You will need a stable compressed air supply (0.6 MPa, oil-water separated), a dedicated AC power drop matching your facility voltage, and a gravity feed line or diaphragm pump system to maintain the buffer tank supply.
Q: How do we verify filling accuracy during Factory Acceptance Testing (FAT)?
A: We perform a standardized 30-container gravimetric test using your actual liquid sample or a simulated test fluid of identical viscosity. Results are recorded across three sample intervals and compiled into the final FAT report.
Request a Technical Proposal
To evaluate your line integration requirements, please provide the following details in your inquiry:
- Liquid type, exact viscosity (cPs), and specific gravity.
- Container dimensions (drawing or CAD file preferred) and neck inner diameter.
- Target line speed (containers per minute).
[Request Engineering Quotation]
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