Dual Flow Rotary Joints

As the key equipment to realize the continuous and leak-free transmission of media between fixed and rotating parts in hydraulic system, the correct use and maintenance of the two-flow rotary joint is very important to ensure the system performance and prolong the service life. The following is the use of double-flow rotary joint precautions:

1. Preparation before installation

1. Check and accept

When receiving the double-flow rotary joint, you should carefully check whether the packaging is intact, whether the appearance of the product is damaged, and whether the accessories are complete. Check whether the model and specifications are consistent with the purchase list, and confirm whether they meet the technical requirements of the application conditions.

2. Clean and dispose

Before installation, be sure to remove foreign bodies in the rotary joint and its supporting pipes to prevent impurities from entering the hydraulic system and causing blockage or damage to seals. At the same time, ensure that the installation surface is clean and free of oil to ensure the sealing effect.

Second, standard installation

1. Adjust the alignment

During installation, ensure that the rotating joint is coaxial with the equipment spindle or pipeline to avoid vibration, wear and leakage caused by eccentricity. Professional tools can be used for measurement and adjustment to ensure that the error is within the allowable range.

2. Moderate tightening strength

The connection bolt should be evenly tightened to the specified torque, neither too loose resulting in seal failure, nor too tight resulting in shell deformation or excessive compression of the seal ring and accelerated wear. Follow the tightening torque instructions provided by the manufacturer.

3. Operation monitoring and maintenance

1. Initial run-in

When the newly installed or replaced double-flow rotary joint is running for the first time, the working pressure and speed should be gradually increased, and the running status should be observed to ensure that there is no abnormal noise, vibration or leakage. Perform proper run-in maintenance if necessary.

2. Get regular checkups

Regularly check the sealing condition of the rotary joint, bearing wear, whether the shell is cracked or deformed, and whether the connection part is loose. When anomalies are found, the machine should be shut down for maintenance in time to prevent small problems from evolving into major failures.

3. Lubrication management

Lubricate the bearing parts of the rotary joint according to the cycle and method recommended by the manufacturer to ensure good operation and reduce friction and heat generation. Choose the right grease and avoid mixing different brands or types of lubricants.

4. Media management

Maintain the cleanliness of the hydraulic medium, replace the filter element regularly, monitor the viscosity, moisture, pollution and other indicators of the medium, and prevent the internal wear or seal failure of the rotary joint caused by the decline in the quality of the medium.

5. Stop protection

When the equipment is shut down for a long time, the hydraulic medium inside the rotary joint should be emptied to avoid corrosion or accumulation of sediment caused by long-term media standing. Before starting again, it is necessary to re-clean and fill with qualified hydraulic media.

In short, following the above precautions can not only ensure the safe and efficient operation of the double-flow rotary joint in the hydraulic system, but also effectively extend its service life, reduce maintenance costs, and provide a strong guarantee for the stable operation of the entire hydraulic system.

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