The AB-type chemical-specific rotary joint is a core fluid transmission component custom-engineered to meet the unique operating conditions of the chemical industry. Designed to accommodate the transfer of various corrosive and specialized chemical media, it is subject to strict operational protocols during both daily use and periods of prolonged inactivity. Drawing upon years of experience in customization and after-sales service, Changsheng Rotary Joints has compiled the following key considerations to assist users in extending product service life, preventing operational failures, and ensuring the stability and safety of chemical production lines.
First and foremost, particular attention must be paid to protective measures during periods of prolonged shutdown. If the associated production machinery is to remain idle for an extended period, it is imperative to implement proper internal protection for the rotary joint. Residual chemical media and ambient moisture can easily lead to internal scaling and corrosion within the AB-type rotary joint. Once internal components become corroded or fouled, restarting the equipment carries a high probability of malfunctions-such as a seized shaft or leakage at the sealing interface. At best, this disrupts normal equipment operation; at worst, it damages the sealing assemblies and internal bearings, thereby increasing maintenance costs. It is therefore strongly recommended that internal cleaning and anti-rust treatments be performed prior to any prolonged shutdown.
Secondly, proper daily maintenance is essential for models equipped with lubrication mechanisms. For rotary joints featuring this configuration, it is mandatory to adhere to established protocols regarding the periodic and quantitative application of lubricant. Continuous lubrication ensures the reliable operation of the internal bearings, preventing issues such as accelerated friction, abnormal noises, or operational stuttering caused by oil depletion and dryness. This constitutes a fundamental maintenance step for ensuring the long-term stability and reliability of the rotary joint-a requirement that must not be overlooked.
Finally, operational protocols for applications involving compressible media constitute a critical area of focus for the AB-type chemical-specific rotary joint. When operating in environments involving air or other compressible media, it is essential to maintain a minute clearance between the rotating and non-rotating sealing rings. Typically, this clearance is controlled within a range of 0.03–0.06 mm (approximately 0.001–0.002 inches); for certain high-precision applications, this tolerance may be reduced to just a few microns.
Maintaining this precise clearance is of paramount importance, as it serves a dual purpose: preventing mechanical wear and damage caused by "dry running" (contact without lubrication) while simultaneously effectively minimizing the rate of media leakage-thereby balancing both operational safety and sealing integrity.
Furthermore, it is essential to clearly recognize the distinct characteristics of the working media involved. Conventional compressible media-such as air-inherently lack the necessary lubricating properties to be compatible with mechanical face seals. Even if certain compressible media (such as aerosol solutions) possess slight lubricity, the actual operational protocols remain fundamentally indistinguishable from those for dry air or other non-lubricating compressible media. Consequently, it remains imperative to strictly adhere to gap control requirements and refrain from arbitrarily adjusting the sealing gap, in order to prevent product damage. Changsheng Rotary Joints offers customized Type AB rotary joints tailored to specific chemical media and operational parameters, thereby ensuring a precise fit with actual application requirements.