Natural Tinnitus Relief Simple mechanical seals an

application of simple mechanical seals:
Medium is no corrosion and no corrosion or weak granular media.
Temperature within 15 to 80 degrees Celsius; pressure should be less than O.5MPa; speed should be less than 3000 rpm per minute; shaft within the 30 to 60 mm.
The sealing to control the main parameters of load factor, bellows compression and the ratio of pressure. Load factor K is too large or too small are negative. Bellows elastic compression ratio determines the size of pressure. Elastic and rubber bellows temperature and time of the initial compression elastic large, 4 to 6 hours after the tension stabilized. Rubber bellows compression in 2 to 3 mm, taking the total contacting pressure 0.2MPa, the smallest not less than 0.05MPa. Simple mechanical seals are combination of scientists successfully developed China's national conditions, over the years concentrated (or diluted) ammonia, 20 to 30% ammonium bicarbonate, water and sewage, salt water and various oils and other media are widely used service life 4 to 6 months. In the energy-saving, energy saving, saving all kinds of materials made significant economic benefits.

Seals, the average speed over 30 mm per second, referred to as high-speed mechanical seals. Currently, high-speed centrifugal pump and compressor seals shall be guilty of high-speed mechanical seals. Some high-speed pumps are vertical, and the growth rate achieved by high-speed gear transmission, generally 1 to 20 000 r, / min, some more than aTr / min Natural Tinnitus Relief, shaft is not large, the 40mm or so, the sealing surface wire-speed 30 ~ 50m / s. Figure 101 is a high-speed pumps with mechanical seals Cure Chronic Tinnitus, it is a multi-spring, flow, balance type static seal. Static ring stone ink manufacturing of tungsten carbide ring. Rotary pump body with liquid separator, separating the liquid to wash and clean sealing liquid containing impurities back to the entrance of the pump, washed with plate control capacity, according to the nature of media and pressure, also can use double or tandem mechanical seals. Many types of centrifugal compressor shaft seal, mechanical seals can be used at low pressure. Centrifugal compressor speed 8000 ~ 14000r/min, larger shaft diameter, generally 100mm above the wire-speed Friction much larger than the high-speed pumps, in the 50 ~ 90m/80 Therefore, its more prominent features of high speed. Figure 102 is the first design and manufacture of high-speed centrifugal gas compressor mechanical seals. The structure of multi-spring, stationary, internal flow, balanced double mechanical seals, the two groups share a static ring ring. Sleeve diameter lomm, speed 8500r/min, Seals speed 55.2m / s, load factor for the o. '729, Spring pressure is o. 29MPa, the sealing surface width 3mm less. Ring material for high-speed steel (w18Cr4V), hardness of HRc after quenching is greater than equal to 60, static ring material is graphite (grade M106H), the leakage rate for the 150 ~ 250ml / h, the general life of a production cycle (10 months ,) up to two life-cycle life.
High-speed mechanical seals trait?
High-speed mechanical seal has the following features. Multi-spring seal structure, static, balanced seal; greater power consumption, mixing power is greater than the friction power seal faces to reduce power consumption, smaller width of the sealing surface (~ 3ram), and to minimize the diameter of rotating parts ; static ring components follow the Bad, the leakage rate is higher, shall be taken to improve the follow of the quality of the small ring and large static spring pressure; installation technical requirements, especially for the ring face and the degree of control of the vertical axis In the 5 "m less. Besides technical requirements for the installation of the machine itself is also higher. If the amount is not greater than the string axis 0.30mm, better rotor balance, running, little vibration, seal boxes and seal between the machine to be reliable.

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