Magnetic brake assembly should meet the following requirements
1. Magnetic particle brake installation precautions
a. Be very careful to avoid the installation deviation caused by the installation (1) The tight gland should be performed after the coupling is aligned. The bolt should be evenly supported to prevent the end face of the gland from being deflected. Check the points with a feeler gauge. The error is not more than 0.05 mm.(2) Check the clearance (ie concentricity) between the gland and the outside diameter of the shaft or bushing. The circumference should be uniform. Check the tolerance of each point with the feeler gauge is not more than 0.01 mm.
b. The compression of the magnetic powder brake spring must be carried out according to regulations. No excessive or small phenomenon is allowed. The required error is 2.00 mm. Over the General Assembly to increase the end face pressure, the other speed end wear. Too small will cause insufficient specific pressure and can not play a sealing role.
c. After the ring is installed, it can be moved flexibly on the shaft. After the ring is pressed against the spring, it should spring back automatically.
Magnetic brake demolition should meet the following requirements
2. Precautions when removing
a. The magnetic brake should be careful when disassembling the mechanical seal. It is forbidden to use the hand hammer and flat spade to avoid damaging the sealing element. A pair of wire hooks can be made, and the seal device can be pulled out by extending into the gap of the transmission seat in the direction of self-financing. If scaling does not remove, clean it and remove it.
b. If mechanical seals are used at both ends of the pump, take care of each other in the assembly and disassembly process to prevent misconduct.c. For mechanical seals that have been operated, where the glands loosen and the seals move, the moving and stationary ring parts must be replaced and should not be used again. Because after this kind of turbulence, the original running track of the friction pair will change, and the sealing of the contact surface will be easily damaged.
Mechanical seal normal operation and maintenance issues
1. Preparation and precautions before starting the magnetic clutch
a, a comprehensive inspection of the mechanical seal, and the installation of ancillary devices and pipelines are complete, whether it meets the technical requirements.b. Before the start of the mechanical seal, conduct a static pressure test to check whether the mechanical seal leaks. If there are more leaks, you should find out the reasons and try to eliminate them. If it is still invalid, it should be dismantled and reinstalled. General static pressure test pressure with 2 ~ 3 kg / square centimeter.
c. Press the pump to rotate the disc and check if it is light and even. If the bicycle is difficult or not moving, you should check whether the assembly size is wrong and whether the installation is reasonable.
a. Before the magnetic clutch starts, keep the sealed chamber full of liquid. For conveying a solidified medium, steam is applied to heat the sealed chamber to melt the medium. The magnetic brake must be started before the start of the magnetic brake to prevent sudden cracking of the soft ring.
b. For the mechanical seal using the pump outer seal system, start the seal system first. Stop the oil seal system after parking.
c. After the thermal oil pump is stopped, the sealing water of the sealing cavity and the end face cannot be stopped immediately. It is necessary to stop the cooling water until the oil temperature drops below 80 degrees at the face seal to avoid damaging the sealing parts.
About magnetic powder brake assembly, please follow the above steps to assemble
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