Schematic diagram of various parameters of mechanical seal-

Schematic diagram of various parameters of mechanical seal

　2017-07-11　　

Schematic diagram of various parameters of mechanical seal:

For different types of seals, the balance diameter is different. For push ring seals, the value is the shoulder diameter of the shaft or sleeve;

Figure 1-4 Schematic diagram of each parameter,

For bellows seals, the value can be approximately the effective diameter De. The effective diameter of the bellows seal decreases with the increase of the pressure of the sealing system. Therefore, the approximate effective diameter of the bellows when not under pressure is usually given as

For rectangular waves (such as car-made PTFE plastic bellows), the effective diameter of the bellows is

For sawtooth waves (such as arc welded metal bellows), the diameter of the bellows is

For U-shaped waves (such as arc welded metal bellows), the diameter of the bellows is

The internal flow bellows mechanical seal and the effective diameter of the bellows when subjected to external pressure are shown in Figure 1-5

Figure 1-5 Internal flow bellows mechanical seal and the effective diameter of the bellows under external pressure

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