QZJ type spherical rotary joint

In modern industrial production, heating furnaces, as important thermal equipment, are widely used in many fields such as chemical engineering, metallurgy, and building materials. The stability and efficiency of its operation are directly related to the production efficiency and product quality of the enterprise. The QZJ spherical rotary joint, as a key component in the heating furnace system, is playing an indispensable role.
Innovative Design and Working Principles
The design of QZJ spherical rotary joint is unique and ingenious. Its core component is a high-precision sphere, whose surface has undergone special processing to possess excellent wear resistance and corrosion resistance. The working principle of this rotary joint is based on the flexible rotation of the sphere, achieving seamless transmission of the medium between the stationary pipeline and the rotating heating furnace components. When the rotating components of the heating furnace start working, the QZJ spherical rotary joint can accurately follow its rotation, ensuring that the heating medium, such as high-temperature steam, heat transfer oil, etc., can enter the heating furnace stably and efficiently, providing continuous heat support for the process inside the furnace.

QZJ ball rotary joint is a universal compensation sealing component specially designed for high temperature and high pressure working conditions. The core adopts a spherical ball universal structure, which can synchronously achieve 360 ° unrestricted rotation+± 30 ° bidirectional large-scale swing dual displacement compensation. It is resistant to high temperature and high pressure, and perfectly solves the problems of sealing wear, joint locking, and medium leakage caused by equipment installation inconsistency, large running runout, roller body deviation, etc. The core supporting components of the product include the vaporization cooling manifold and water-cooled rollers for steel plant heating furnaces, and are widely used in the primary and secondary air supply rotary air heater systems of thermal power plant boilers; It can also be matched with various high-temperature and high-pressure fluid conveying equipment with poor coaxiality and large vibration, which can replace ordinary rigid rotary joints. The core advantage of the core spherical universal structure is the integrated spherical friction pair with ± 30 ° large angle spherical swing and 360 ° free rotation. The rotation and swing actions do not interfere with each other, and the dual compensation is effective at the same time. It can fully offset the mechanical stress caused by equipment thermal deformation, installation deviation, operating vibration, and radial deflection, and avoid unilateral force jamming, rapid sealing damage, water leakage, and air leakage of rigid joints from the root. The whole machine is designed to withstand high temperatures and high pressures. The shell is made of high temperature cast steel/304 stainless steel forging, and is equipped with a high temperature hard silicon carbide sealing pair and a high temperature resistant metal/fluororubber composite seal. It can withstand high temperature water vapor and hot air media for a long time, and is sealed in a high temperature environment without softening, deformation, or leakage. Adaptive compensation, suitable for harsh working conditions with large vibrations and different concentricity, automatically corrects the vibration of heating furnace rollers, power plant air heaters, pipeline thermal expansion and contraction displacement, and foundation settlement offset scenarios without the need for complex pipeline compensation structures, significantly reducing pipeline support loads. Modular sealing assembly, easy to maintain. The sealing components are designed with independent modularity, and in case of wear and leakage, the sealing kit can be replaced separately without the need for overall disassembly of the equipment, shortening the maintenance downtime of steel mills and power plants. The protective structure of the heavy-duty and high-temperature resistant bearing is equipped with a high-temperature resistant heavy-duty bearing and a heat-insulating and dust-proof retaining ring, which isolates high-temperature radiation, water vapor, and dust erosion. It runs smoothly and smoothly during long-term reciprocating rotation and swinging without any jamming or abnormal noise

Significant performance advantages
Super strong sealing performance, preventing medium leakage
For heating furnaces, medium leakage not only causes energy waste but may also pose safety hazards. The QZJ spherical rotary joint adopts advanced sealing technology, and the multi-layer sealing structure cooperates with each other to form a strong sealing defense line. Even in high temperature, high pressure, and complex working conditions, it can effectively prevent medium leakage, ensure the safe and stable operation of the heating furnace, and improve energy utilization efficiency.
High wear resistance and extended service life
During the operation of the heating furnace, there will be continuous friction between the rotating parts and the rotating joints. The QZJ type rotary joint, with its wear-resistant spherical material and optimized structural design, can withstand huge frictional and impact forces, greatly extending its service life. This not only reduces the frequency of equipment replacement and lowers maintenance costs, but also avoids production interruptions caused by equipment failures, providing strong support for the continuous production of enterprises.
Good adaptability to meet diverse needs
Different heating furnaces have differences in operating parameters and process requirements, and the QZJ spherical rotary joint exhibits excellent adaptability. It can work stably and reliably under extreme conditions of high temperature and high pressure, as well as different types of heating media. This broad adaptability enables it to perform at its best in various heating furnace systems, meeting the diverse production needs of enterprises.

PRODCUT FEATUREA
*The unique combination structure of multi spring seal and ball seal ensures more reliable sealing performance. *The highest temperature resistance of imported German seals is 400 ℃. *Optional Japanese imported 631 and 750 high-temperature stainless steel springs. *Spherical sealing ring support, with good anti vibration, heat-resistant and impact performance. *It can rotate 360 ° along the axis. *The maximum bending angle is 30 °± 1 (swing angle ± 15 °). *It has self-lubricating properties and is free of lubricating grease for life. *The substrate and shaft can be made of materials such as carbon steel, SUS304, SUS316L stainless steel, etc. *The application of corrosion-resistant acid and alkali resistant sealing components can extend their service life. *JB/T 82-2015, GB/T9119-2000, JIS Japanese standard, American standard ASTM, German standard DIN and other flange standards are optional. *Non standard products can be designed and produced with non-standard rotary joints based on the technical parameters and working environment provided by customers.