Sanitary pump mechanical seal

    Mechanical seal means is by at least a pair of vertical on end surface of the axis of rotation in under the action of the fluid pressure and the compensation mechanism of elastic (or magnetic) and the auxiliary seal with keep sticking with relative sliding and constitute the prevent fluid leakage device. General ordinary mechanical seal using the auxiliary seal is a metal bellows mechanical seal, in light seal, and meet corrugated tube auxiliary seal.

    Mechanical seal is a rotating mechanical seal device, such as like centrifugal pump, centrifuge, reactor, the compressor, these special device, due to the drive shaft through the inside and outside of the equipment, so that the shaft between the equipment exists a circumferential clearance and equipment in the media will by trainee leak out, if the internal pressure is less than the atmospheric pressure, the air will be into the interior of the machine, so it is necessary to have a to prevent leakage of the shaft sealing device. Shaft seal has many kinds, due to mechanical seal with leakage quantity is little, long service life, etc., a bit, so today's mechanical seal is in these devices the main shaft seals.

    Mechanical seal and seal, in the relevant standards of the state is defined as: "by at least a pair of vertical on end surface of the axis of rotation in the role of fluid pressure and compensation mechanism of elastic (or magnetic) and the auxiliary seal with keep sticking with relative sliding and constitute the prevent fluid leakage device."

Sanitary pump mechanical seal installation requirements

    1, should pay attention to avoid the installation deviation caused by installation

    (1), tighten the gland should be in to find the coupling is of bolts should be uniform branch, prevent the gland end deflection, feeler to check each point, the error is not more than 0.05 mm.

    (2), check the gland and the shaft or shaft diameter with the gap (i.e. concentricity), around to evenly, with feeler gauge to check the status of the poor is not greater than 0.01 mm.

    2, the amount of spring compression according to the regulations, there are too large or too small phenomenon does not allow the error of 2 mm. Over the general assembly to increase the end face pressure, to accelerate the end face wear. Too small will cause less than the pressure can not play a role in sealing.

    3, after the installation of the ring, the dynamic pressure to the spring should be able to automatically bounce back.