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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>The demand for mechanical seals of gear oil pumps Gear oil pump requirements for mechanical seals
Mechanical seals, also known as mechanical seals, are dynamic seals for rotating shafts. The mechanical seal function is reliable, the leakage is small, the service life is long, and the power consumption is low. It does not need to be repaired frequently, and can be adapted to the production process automation and high temperature, low temperature, high pressure, vacuum, high speed and various corrosive media. Hungry sealing requirements for severe conditions such as solid particulate media. The mechanical seal is a leak-proof shaft seal device that is reached by a pair of pairs or pairs of straight end faces that are relatively straight to the shaft under the effect of fluid pressure and the elastic force* (or magnetic force) of the compensated tissue. Gear oil pump requirements for mechanical seals, mechanical seals and soft packing seals are as follows: /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Strengths:
(1) The seal is firm, the sealing condition is very stable during long-term operation, and the leakage is small, and the leakage is about 1% of the soft packing seal:
(2) Long service life, usually up to 1~2 years or longer in oil and water media. It usually works for more than half a year in chemical media:
(3) The power consumption of the wiper is small, and the conflict power is only 10%~50% of the soft filler seal.
(4) The shaft or bushing is basically not worn:
(5) The repair cycle is long. The end face can be actively compensated after wear, and usually does not require frequent repairs:
(6) Good shock resistance, insensitive to the oscillation of the rotating shaft and the deflection of the shaft to the sealed cavity:
(7) Wide range of applications, mechanical seals can be used for high temperature, low temperature, high pressure, vacuum, different rotation frequency, and various corrosive media and seals containing abrasive media.
Disadvantages:
(1) More messy, high demand for processing (2) Device and replacement are more troublesome, workers need to have a certain skill level (3) When accidental incidents occur, disposal is difficult. High-priced preparation before sealing:
(1) View the type of mechanical seal. Whether the standard can meet the needs of drawing drawings, so the parts (especially the sealing surface, the auxiliary sealing ring) are damaged. Deformation. If there are defects, such as cracks, it is necessary to replace or correct (2) to see the cooperation standard of the mechanical seal parts, roughness, parallelism can match the depiction requirements (3) when using small spring mechanical seal, you should check the small stretch Whether the length and rigidity of the spring can be the same (4) Check the amount of turbulence of the main unit. Whether the swing amount and the winding degree can meet the skill requirements, whether the sealed cavity can meet the standard of the device, whether the sealed end cap and the shaft can be straight, usually the demand: the shaft 窜 momentum is not more than ± 0. 5mm: the shaft swing amount (the rotary ring seal ring) ) Not more than 0. 06mm: The maximum winding of the shaft is not more than 0. 05mm: The sealing end cover and the gasket touch the flat line facing the straightness of the straight line. The difference is 0. 03~0. 05mm
(5) Adhesion should be adhered to, especially the rotating ring and the stop ring sealing surface and the auxiliary sealing ring should have no impurities. dust. Do not answer the unsanitary application of the seal surface.
(6) Do not answer the application to tap the sealing element. To avoid damage to the seal
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Source: China Bearing Network Time: 2013-11-26