Rotary joints, also called rotary unions, is a rotary sealing device that connects rotating equipment to fixed pipes for the transfer of steam, water, thermal oil, coolant, hydraulic oil, air and other media. Rotary joints can be designed with multiple passes and can handle multiple media types simultaneously. In these cases, a soft seal such as an O-ring is used to prevent fluids from "passing" to another passage. Soft seal multi-pass rotary heads are used in a variety of industries and applications, including oil and gas, food and beverage, aerospace, robotics, and medical devices. In some applications, the rotary joint is equipped with slip rings to transmit hydraulic power as well as electrical signals.
Conventional rotary joints use a spring-loaded mechanical seal to prevent the liquid or gaseous medium from dispersing into the atmosphere. Spring pressure is used to create the tightness in low pressure or vacuum applications. In a typical rotary joint, the carbon is spring-pressed into a seal, silicon carbide, or hard metals. In this way, a basic mechanical seal structure is created and a dynamic seal is achieved.
Balanced mechanical seal structure is generally used in rotary heads. Balanced mechanical seal technology relies on optimizing the spring pressure to create a positive pressure inside the rotary head. The working pressure of the fluid, if any, has little effect on the spring pressure. Balanced mechanical seals are typically flat-faced and the swivel heads are supported by ball bearings.
Basically, a rotary joint is only as good as the mechanical seal inside. Lower quality mechanical seals naturally wear out faster, resulting in increased maintenance, downtime and repair costs. When a seal fails, fluid escapes and the efficiency of the heating or cooling process drops. With the increase in maintenance and repair times, the downtime of the machines increases. Considering all these, the actual replacement cost of the mechanical seal or rotary joint constitutes only a small part of the total cost of a malfunction.
"DEMİRKOL SIZDIRMAZLIK ELEMANLARI" is the choice of Turkey's leading machinery manufacturers. Products manufactured using high quality materials ensure a stable and reliable operation. Rotary joints are mostly available for repair/revision, and you can send any brand of rotary head to repair with the assurance of Demirkol Sizdirmazlik Elemanlari.
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