The Key Application of Rotary Joints in Industrial Equipment

Rotary joints (also known as swivel joints, rotary connectors, or rotary couplings) have wide applications in many industries, and their main function is to allow the transfer of fluids (such as liquids, gases, or vapors) between two relatively rotating components.  The following are detailed explanations of several main application areas of rotary joints:

1. Plastic processing and rubber industry

· Injection molding machine: a hydraulic system used for injection molding machines, allowing hydraulic oil to be transferred between the rotating injection mold and the fixed parts.

· Extruder: In plastic and rubber extruders, a rotary joint connects the heating system and rotating components such as screws to transfer heat transfer oil or cooling water.

· Rolling machine: used for lubrication and cooling in the rubber rolling process to ensure continuous production.

2. Food processing and packaging

· Filling equipment: In filling and packaging machines, rotary joints allow for the transfer of cleaning agents and fluids between the filling head and the conveying system.

· Mixing equipment: such as food mixers, emulsifiers, etc., rotary joints are used to input ingredients and liquids such as water into the mixing tank and exchange fluids during the mixing process.

· High temperature cooking and cooling system: In cooking pots and cooling equipment, rotary joints help switch between heating and cooling media.

3. Textile and Printing and Dyeing

· Dyeing vat: In textile printing and dyeing equipment, a rotary joint allows dyeing agents or detergents to flow between the rotating dyeing vat and a fixed supply source.

· Water jet loom: Connect the water jet pipe and spraying device of the loom to ensure the continuity of spraying.

4. Paper making and printing

· Paper machine: In a paper machine, rotary joints connect pressure rollers, scrapers, and other rotating components that require cooling or lubrication.

· Printing machine: used for conveying ink and cooling water, maintaining printing quality and improving equipment lifespan.

5. Steel and Metallurgy

· Rolling mill: In rolling mills and non-ferrous metal rolling mills, rotating joints transmit coolant to reduce equipment wear and improve rolling quality.

· Continuous casting machine: used for lubrication and cooling during continuous casting process to ensure the stability of continuous production.

6. Petrochemical industry

· Mixing and stirring equipment: In large storage tanks and reactors, rotary joints transport the mixture and cooling water to maintain uniform temperature during the reaction process.

· Pump and compressor: used for connecting the rotating components of a pump with a static fluid transfer system.

7. Solar and wind power

· Solar collector: In solar energy systems, rotary joints are used to track the cooling system and pipeline connections in the device.

· Wind turbine: Used for hydraulic systems, cooling systems, or other fluid transmission needs between wind towers and generators.

8. Pharmaceutical and Biotechnology

· Mixed fermentation tank: In pharmaceutical and biotechnology processes, rotary joints ensure continuous transmission of media in a sterile environment.

· Extraction and purification equipment: used for mixing and extracting various solutions in pharmaceutical processes.

In general, rotary joints play a crucial role in various equipment and systems that require rotating transmission of fluids, and their reliability and durability directly affect the production efficiency and product quality of the equipment.