Mechanical Seals On A Little Knowledge

Multi-and single-spring mechanical seals spring What's the difference

?

According to the number of spring compensation mechanism can be divided into multiple springs and single-spring mechanical seal. Multiple spring compensation mechanism is called multi-spring mechanical seals seal; compensation agencies, only a spring known as the single spring mechanical seal. Multi-spring machine

mechanical seals, also known as a small spring, small axial size of this structure, the method can be used to change the spring to change the number of elastic force, axial force is uniform, for high-speed mechanical seals, should not be used in corrosive media. Single spring mechanical seals it

Said the big spring mechanical seals, sealing structure is relatively simple. Some also use the spring type seal transfer torque. Big spring seal application made more, but not for high-speed.

What are the characteristics double seal?

According to the number and arrangement of seal faces can be divided into single-end, double end and multi-Mechanical Seal. Two seal faces "back to back" or "face to face" arrangement of the seal is called double mechanical seal. For the working media of toxic, explosive, easy to command

Fat, easy crystallization, high temperature, low temperature and working medium is a gas, or for high-vacuum sealing, can be double seal. Under normal circumstances sealing liquid using clean and good lubrication medium.

The circumstances under which use of tandem mechanical seals?

More than two groups and two groups with the layout of the composition of a single mechanical seals series. This seal means to progressively reduce the pressure of the sealed chamber, the medium is not to leak. Tandem seal generally rarely used, only used in very high pressure.

Bellows type mechanical seals What are the characteristics?

Compensation mechanism for the corrugated tube, seal ring (ring or the stationary ring) and the ripple control as a whole, the middle ring without assistance, thereby reducing a leak; while reducing friction compensation mechanism, improving the follow nature; for Welding gold

Bellows seal is not secondary seal temperature limits; for PTFE bellows seal can be used in corrosive media. The drawback is that some smaller elastic bellows, just add auxiliary spring.

by: lucy00123

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