What factors should be taken into account in the hydraulic seal ring.

The hydraulic seal ring of the oil pump is also continuously improved.General mechanical seal is suitable for pressure <1.5Mpa, temperature in -20 degrees to 200 degrees C, end line speed <20M/sec of sewage, oil and general corrosive medium.Hydraulic sealing ring with a package of fluorine, fluorine rubber.The user can according to the use of the medium of the pump using different friction to adapt to the O ring.If the medium corrosive strong, can be changed to F4V type ring.In the installation of V type, in order to make a close fit, should be about 90 degrees Celsius in hot water soak for a few minutes.While warm, the group with a finger pressing, and immediately loaded into a predetermined position to compress the oil pump seal to pay attention to the following points:

1.The general mechanical seal is suitable for cleaning, without suspended particles in the medium.Therefore, the newly installed pipeline system and a liquid storage tank should be carefully rinsed to prevent solid impurities into the mechanical sealing surface and seal failure.

2.In the easy crystallization of the media, the use of mechanical seals, should pay attention to the regular washing.Before starting to restart the machine, the mechanical seal on the crystal should be cleaned.

3.Remove the mechanical seal should be carefully, do not use the iron hammer, and other percussion, so as not to damage the static ring sealing surface.

4.If there is dirt do not come down, and not remove the strong, instead should try to remove dirt, wash clean, then remove, so as not to damage the sealing element.

5.Before the mechanical seal is installed, all the sealing elements shall be checked for failure and damage if any new element is to be repaired or replaced.

6.The seal face of the moving ring and the static ring should be strictly checked.

7.In the assembly must pay attention to the elimination of deviation, fastening screws, to be uniform, to avoid deflection, so that the seal failure.

8.adjusting the compression quantity of spring to make it not too tight or too loose. If it is too tight, the surface of seal won’t work because of wear and the consumption rate is big; If it is too loose, it cannot seal, it will have excessive leakage. So, pump installed, you should feel that the seal spring has a certain amount of compression and you can also turn it easily and nimbly when pull the rotors by hand. If you have any difficulty to turn it, please adjust.

9.To seal the machine with washing outside, you should open flushing fluid to make seal tank be full of sealing fluid before you turn it on. When you stop your car, turn off the pump first, than turn off the sealing fluid.

Think about the compatibility of working medium as choosing materials of hydraulic o ring seal. Must consider the pressure, temperature, continuous working time, operation period and so on.If used in the rotating occasion, it is required to consider the temperature rise due to the friction heat. Different seal material, its physical properties and chemical properties are not the same, see the "rubber seal material characteristics table".

?

According to the load type can be divided into static sealing and dynamic sealing; according to the sealing use can be divided into the hole with sealing, shaft sealing and rotating shaft seal; according to the installation of the form can be divided into radial installation and axial installation. For shaft seal, the deviation between the inner diameter of the hydraulic seal and the sealing diameter D2 should be as small as possible as radial installation .For hole sealing, the inner diameter of the hole should be equal to or slightly less than the diameter of the groove d1.  To consider the direction of pressure as axial installation. If there is pressure inside, The outer diameter of the hydraulic sealing ring should be larger than that of the groove outside diameter D3 2% ~ 1; If there is pressure outside, you should let the inner of hydraulic seal smaller than groove diameter 1~3%.