1、 Comparison between mechanical seal and stuffing box seal

One The seal is reliable and will not leak or leak very little over a long period of use. Clean, no dead corners, can prevent bacterial contamination.

II Long service life, the mechanical seal with the correct selection of friction load ratio can be used for 2-5 years, and the longest service life can be up to 9 years.

III The maintenance cycle is long, and under normal working conditions, no maintenance is required.

4 The shaft or sleeve is not subject to wear.

Five Friction power consumption is low, generally about 10-50% of that of the packing box seal

VI Mechanical seals do not have as strict requirements for the accuracy and smoothness of the shaft as packing boxes, and are insensitive to the vibration of the rotating shaft and the deviation of the shaft from the housing hole. They are less sensitive to the vibration of the shaft.

7 Widely applicable, it can be used for sealing low temperature, high temperature, high vacuum, high pressure, various speeds, as well as corrosive, abrasive, flammable, explosive, and toxic media.

The working principle of mechanical seal: Mechanical seal, also known as end face seal, is a dynamic seal used for rotating shafts. Mechanical seals have reliable performance, low leakage, long service life, and low power consumption. It does not require frequent maintenance and can adapt to production process automation, high temperature, low temperature, high pressure, vacuum, high speed, and various highly corrosive media. Sealing requirements for harsh working conditions such as solid particle media. Mechanical seal is a shaft sealing device that relies on one or several pairs of end faces that are perpendicular to the shaft and undergo relative lubrication to maintain contact and assist in sealing under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism. The requirements for mechanical seals in gear oil pumps, and the comparison between mechanical seals and soft packing seals are as follows:

advantage:

1) Reliable sealing, stable sealing state during long-term operation, minimal leakage, with a leakage rate of about 1% of soft packing sealing:

2) Long service life, generally up to 1-2 years or longer in oil and water media. Working in chemical media for more than six months:

3) The friction power consumption is small, and its friction power is only 10%~50% of that of soft packing sealing

4) The shaft or sleeve is basically not worn:

5) The maintenance cycle is long. After the end face is worn, it can be automatically compensated and generally does not require frequent maintenance:

6) Good seismic resistance, insensitive to the vibration of the rotating shaft and the deflection of the shaft to the sealing chamber:

7) Widely applicable, mechanical seals can be used for sealing high temperature, low temperature, high pressure, vacuum, different rotation frequencies, as well as various corrosive media and abrasive media.