Anti-drip filling nozzle with suction-back mechanism
Submerged filling; suction-back at the end of filling eliminates dripping and stringing, keeping the bottle mouth and conveyor surface clean
This is a semi-automatic liquid filling machine that utilises constant-pressure feeding via a sealed pressure hopper combined with precise metering by a magnetically driven pump. The entire machine features a vertical structure made of 304 stainless steel, with a fully enclosed flow path design throughout. The equipment establishes a stable positive-pressure feeding environment via the top-mounted sealed pressure hopper, completely resolving the common issues of feeding fluctuations and air entrapment associated with standard self-priming magnetic drive pumps; Paired with a shaft-seal-free magnetic drive pump, it achieves zero-leakage transfer and precise metering, whilst the PLC touchscreen control system enables digital parameter adjustment.
Product Detail
Equipment Overview：
The fully automatic pneumatic piston filling machine is a linear automatic volumetric filling system. The entire machine features a 316 stainless steel frame and comprises a storage hopper, a pneumatic piston metering cylinder, a conveyor line, pneumatic actuators and a PLC touchscreen control system. The machine utilises a pneumatic cylinder to drive the piston, thereby achieving volumetric, metered filling. Powered primarily by pneumatic systems, it is suitable for the personal care, food, cosmetics and pharmaceutical industries. It can fill low- to medium-viscosity materials such as aqueous solutions, lotions, creams and sauces, and is well-suited to continuous production on medium-capacity production lines, offering excellent value for money.
Working Principle:
1. Material storage and feeding: The material is stored in the top conical hopper and flows into the piston metering cylinder by gravity; a feed pump may also be fitted to supplement the feed, ensuring a continuous supply.
2. Pneumatic Suction: Compressed air drives the cylinder to retract, pulling the piston backwards and creating a vacuum inside the metering cylinder, which draws the material from the hopper into the metering cylinder; the cylinder stroke determines the volume per fill, and adjusting the stroke allows the fill volume to be altered.
3. Bottle Conveyance and Positioning: Empty bottles are conveyed by the production line belt. Once the photoelectric sensor detects that a bottle is in position, the bottle-stopping cylinder activates, holding the bottle in place directly beneath the filling nozzle.
4. Material Pressurisation and Filling: The filling nozzle descends into the bottle to prevent foaming; the cylinder moves forwards, pushing the piston to force the material from the metering cylinder into the bottle; the system supports two-stage exhaust speed control (fast and slow) to achieve dual-speed filling.
5. Cyclical Operation: Once filling is complete, the filling nozzle rises and the bottle-holding mechanism releases the bottle, allowing the finished bottle to move away whilst the next bottle enters the filling station, repeating the cycle; the system features a ‘no bottle, no filling’ logic, ensuring that no product is dispensed when the station is empty.
Features：
1. Pneumatic cylinder-piston volumetric metering
The system utilises a pneumatic cylinder to drive a piston for volumetric metering, ensuring stable filling output unaffected by slight fluctuations in hopper level or material viscosity; the filling volume can be quickly adjusted by altering the cylinder stroke.
2. Pneumatic-driven filling with reliable operation
The core actuators are cylinder-driven, resulting in a low failure rate and simple maintenance.
3. Fully automatic continuous production line
Integrated with a conveyor line, photoelectric detection and bottle positioning mechanisms, bottles are automatically conveyed and positioned; the system can be integrated with capping and labelling equipment to form a complete production line.
4. Touchscreen PLC control system
The touchscreen allows users to set filling speed and delay times, and store multiple production recipes; parameters can be directly recalled when switching products.
5. Wide range of compatible materials
Capable of handling aqueous solutions, serums, lotions, creams, gels and sauces, covering everything from low-viscosity liquids to high-viscosity pastes.
6. Anti-foaming and Anti-drip Design
The filling nozzle can be submerged into the bottle for filling; dual-speed filling is available. A suction-back function is activated at the end of filling to prevent dripping and stringing, thereby avoiding contamination of the bottle and conveyor belt.
7. Sanitary-Grade Removable Flow Path
Product-contact components are made of 304/316L stainless steel. The piston cylinder, hopper and piping can all be quickly disassembled and cleaned, meeting hygiene requirements for personal care and food products.
8. Flexible Bottle Adaptability
The width of the conveyor guardrails is adjustable to accommodate glass and plastic bottles of various diameters; adjustable levelling feet at the base facilitate levelling of the equipment.
9. Safety Logic
No-bottle-no-filling and emergency stop protection eliminate waste caused by empty spraying.
High-quality cylinders deliver powerful, stable, and long-lasting pneumatic output. Precision-ground cylinder barrels effectively reduce wear on piston seals, ensuring filling accuracy.
Item | Technical Parameter |
Voltage | 220V/50-6HZ |
Power | 1KW |
Material of the fuselage | SUS304/316L |
Hopper capacity | 30L |
Production capacity | 5-50 Bottle/Min |
Applicable bottle types | Plastic glass bottles are available in various sizes and heights |
Bottle mouth diameter | 10-100MM |
Height of the bottle | 50-350MM |
Equipment weight | 200KG |
Air pressure | 0.6-0.8MPa |
Machine Size | 2000*850*1650MM |
Scope of application | 5-60,25-250,50-500,100-1000,200-2500,500-5000ml(Customizable） |
Filling nozzles | 1（Customizable） |
Filling accuracy | ±1% |
Applicable | Liquid - Paste |
Pre-sales
Technical Advice
You can by telephone, SMS message or e-mail at any time to get in touch with us, tell your needs, and put forward your questions, we will be dedicated service with a satisfactory answer.
Pre-sales Service
According to your specific needs and the actual situation of the plant, we have the equipment for your design, can be described as "tailor-made".
Field Trips
Whether you visit, or inspection, we sincerely welcome your arrival, from the office building to the production plant, we have accompanied by hand, patiently introduced and explained to you. Here, you can see the entire equipment production process, experience the operation of equipment.
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Jenny Promixer
David King
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