Rotary joints are known by many other names, e.g., rotary couplings, rotary unions, or swivel joints.
These mechanical devices allow smooth transfer of fluids and signals between stationary and rotating parts.
The role of Rotary Joints is of connectors because they bridge the gap between two components having different motion characteristics.
Rotary joints are used in various applications. Some examples are automotive, manufacturing, aerospace, and marine industries.
Working mechanism of rotary joints
Rotary Unions are carefully designed and engineered so that you get reliable performance and efficient operation while carrying out rotational movement.
The two main components are inner rotating element and outer stationary element.
The inner element rotates along with the rotating part. The outer element remains fixed in place, and it connects to the stationary piping or conduit.
These two elements are sealed together with the help of packing or seals. Thus, there are no leaks, and integrity of the fluid or electrical transfer are maintained.
Factors that can influence the design of rotary joints
Two important crucial considerations in determining the appropriate materials and sealing mechanisms or rotary joints are pressure and temperature requirements.
Also, you need to consider the type of media being transferred, whether it is a liquid, gas, or electrical signal.
Then you should consider aspects like speed of rotation. Size, and torque.
Different types of rotary joints are there, each tailored to particular applications and media.
For example, Hydraulic rotary joints are designed for the transfer of hydraulic fluids.
Similarly, pneumatic rotary joints allow the flow of compressed air or gases.
Water rotary joints and steam rotary joints are capable of managing the transfer of high-temperature fluids.
Electrical rotary joints or slip rings an transmit electrical power or signals across rotating interfaces.
Working Mechanisms of Rotary Joints
- Fluid Transfer Mechanisms: It is designed to ensure a seamless flow of gases and liquids between two components, one rotating and one stationary. The applications are coolant system, automotive transmission, print industry, and so on.
- Electrical Signal Transfer Mechanisms: It is designed to transmit electrical signals or power. This involves rotational movement and at the same time maintaining uninterrupted connectivity. Some typical applications are video surveillance systems or radar systems used in military radar systems and the defense industry. Not only that, but these rotary joints are also used in Broadcast Equipment, such as rotating antennas and cameras.
In short, rotary joints are versatile and useful equipment that is useful in wide range of industrial applications.
Also read : How to Select the Right Rotary Joints for Air Applications?