Electric Drink Dispenser - Easy Setup

Update Section 
02/12 - I've added the dual stand print profile and I'm currently working on a A1 mini version of the dispenser :)

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This modular beverage dispenser is a functional and playful DIY drink vending machine, designed for use with standard beverage bottles and simple electronic components.

The system uses a small air pump to generate pressure inside the bottle, allowing beverages to be dispensed cleanly and in a controlled way by pressing a button. The pump or the 3D printed parts itself does not come into direct contact with the beverage. The beverage flows only through the food-safe silicone tube.

Bottle Compatibility
The dispenser provides space for a bottle with an approximate diameter of 8 cm and a height of around 30 cm.
Both slim 1.25-liter bottles and standard 1-liter soda bottles (e.g. typical cola bottles) fit into the dispenser.

🔧 Required Components

Electronic Parts

• 1× DC air pump motor, 6 V (65 × 27 mm) (Amazon Link) - Keep in mind to get a pre wired version to avoid soldering :)
• 1× 9 V battery
• 1× Waterproof push button (Amazon Link)
• 1× 9 V battery clip (I-type) (Amazon Link)

Tubing

• 1× Food-safe silicone tube 2 × 4 mm (air)
• 1× Food-safe silicone tube 6 × 8 mm (beverage)

Optional

• Small rubber band for motor vibration damping
• 3× 2-way connection terminals (if soldering is not desired)

✅ The entire setup can be assembled without soldering.

⚡ Power Supply Information

The air pump motor is rated for 6 V DC, but is operated using a 9 V battery.

The higher voltage provides additional power, allowing the beverage to be dispensed within a reasonable time.
This minor overvoltage has proven reliable in practice and does not damage the motor during intermittent use.

Key Features

• Simple electronics – no soldering required
• Button-controlled beverage dispensing
• Uses food-safe silicone tubing
• Powered by a 9V battery
• Modular and expandable design
• Optional dual stand for two dispensers

Assembly Notes

• The model consists of multiple modular parts and is easy to assemble.
• At the current stage, two holes must be drilled manually into the bottle screw cap to route the silicone tubes.
• After inserting the tubes, the holes should be sealed with hot glue to ensure an airtight connection.
• This manual step is intentional to prevent the beverage from coming into contact with any 3D printed parts.

Planned Improvements:

• Integrated screw cap with defined tube guides
• Improved sealing and tube fixation
• Optimized user experience during assembly

Before implementing such a component, further evaluation of food-safe materials, print settings, and post-processing methods will be required to ensure safe use in contact with beverages.

Modular Expansion

The dispenser system is designed to grow.
An optional dual stand allows two beverage dispensers to be placed side by side, and the concept can be expanded further in future updates.

Intended Use

This model is intended as a DIY maker project for hobbyists, events, or creative setups. It is not a certified food or electrical appliance.
 

If you would like to support me once, you are welcome to buy me a coffee ❤️:
https://buymeacoffee.com/3d2k
 

⛔️ The sale of physical prints is only permitted with a commercial license.