Simple installation, different lamps can be equipped, and the number of lamps can be increased or decreased freely. When there is no limit to the number of lamps installed on the track, it can theoretically not exceed the wattage of the transformer power supply. Magnetic Track Light,Magnetic Spotlight,Magnetic Light,Magnetic Down Light JINGYING , https://www.jingyinglight.com
Rotor pump mechanical seal replacement
For rotor pumps, the most critical consumable is the mechanical seal, which typically lasts between 7000 to 8000 hours under normal continuous operation. However, in less-than-ideal operating conditions or environments, the lifespan of the mechanical seal can be significantly shortened. Therefore, it's essential to learn and apply proper and correct methods for replacing the mechanical seal to extend the life of the rotor as much as possible. When replacing the mechanical seal, always disconnect the power supply of the pump to prevent accidental start-up, which could cause injury.
The process begins by removing the rotor chamber cover. Start by loosening and removing each nut securing the cover. Once removed, use a copper rod or wooden block between the two rotors to protect them while you loosen the rotor retaining nuts with a wrench. Note: The direction to loosen the fixing nut should match the rotation direction of the shaft—meaning the nut should be turned in the same direction as the shaft rotates. Then, carefully pull out the two rotors by hand. If they don’t come out easily, proceed to the next step.
In cases where the rotors are stuck, remove the fixing nuts inside the rotor chamber and gently tap the back of the chamber with a copper rod until the rotor chamber becomes loose enough to be removed manually. If the rotor wasn’t removed in the previous step, it will come out along with the chamber. At this point, you may notice adjustment shims on the transmission shoulders. Be sure to record their positions and quantities so that they can be reinstalled correctly during reassembly.
Next, replace the static and dynamic rings if necessary. For the static ring installation, align the intact static ring with the three pins on the rotor chamber and push it into place by hand, ensuring that the O-rings on the static ring also fit into the mounting holes evenly. For the dynamic ring, push it onto the drive shaft until the bottom of the ring touches the shoulder. Align the two screws on the dynamic ring with the corresponding plane on the shaft, then gently screw them in until the screw heads make contact with the shaft surface. Loosen one or two threads to allow the dynamic ring to rotate approximately 5 degrees on the shaft—never more than that. Apply a small amount of grease or paint to the screw holes to prevent them from loosening during operation.
Carefully place the rotor chamber with the installed static ring onto the drive shaft. Insert the two conical pins on the rotor housing into the corresponding holes in the gearbox. Use iron rods to guide the rotor chamber nuts into position and hammer the locating pins into place. Finally, secure the rotor chamber with the fixing nut, ensuring it’s aligned with its original factory position. Reinstall the original adjustment shims on the drive shaft exactly as they were before.
Insert the rotor into the chamber, using a copper rod or wooden block between the two rotors to protect them. Tighten the rotor fixing nut securely. Note: Before leaving the factory, the rotor, rotor fixing nut, and drive shaft are usually numbered. During assembly, ensure that matching parts are used together and check their numbers after the step is completed. Also, determine the tightening direction of the fixing nut based on the shaft rotation direction—this should be opposite to the direction of rotation.
Once everything is in place, couple the rotor pump and rotate it manually around the marked axis to check for any rubbing between the rotors and the chamber walls. Ensure the gaps between the rotors and the chamber are consistent. Use a straightedge to measure the gap at different points on the outer surface of the rotor chamber. These gaps should be uniform, with no signs of friction.
Reattach the rotor chamber cover, making sure the top surface of the cover is flush with the rotor chamber. Tighten all cover nuts securely. Reinstall the coupling housing, turn on the power, and start the pump. Ensure the system is fully primed with liquid and check the mechanical seal for leaks. If there is no leakage, the replacement has been successful, and the pump is ready for operation.