What is the working principle of the centrifugal pump mechanical seal

Mechanical seal is a kind of shaft sealing device with liquid optional mechanical seal. It has two sealing end faces that move relative to the shaft perpendicular to the shaft, so it is also called end face seal, which is defined in the national standards for mechanical seals: A device that prevents liquid leakage by keeping at least a pair of end faces perpendicular to the axis of rotation under the cooperation of the liquid pressure and the elastic force (or magnetic force) of the compensation mechanism and the auxiliary seal to prevent liquid leakage.

The mechanical seal of centrifugal pump is mainly composed of four parts:

1. The first part is the sealing end face composed of a moving ring and a static ring, sometimes called a friction pair.

2. The second part is composed of elastic elements as buffer compensation as long as the parts are composed, and its function is to make the sealing end face tightly fit

3. The third part is a copy of the sealing ring, which has a moving ring and a static ring.

4. The fourth part is the transmission mechanism that makes the moving ring rotate with the shaft.

How does the mechanical seal achieve sealing?

The shaft drives the moving ring to rotate through the transmission seat and the push ring. The static ring cannot be fixed. The sealing end face between the moving and static rings is tightly fitted by the pressure of the medium and the spring force to prevent the leakage of the medium. After the friction pair surface is worn, the Compensation is achieved under the push of the spring,

In order to prevent the leakage of the medium through the moving ring and the shaft, a moving ring sealing ring is installed, and the static ring sealing ring prevents the leakage of the medium along the static ring and the gland.

Xi'an HL can supply oilfield centrifugal pump, such as Mission centrifugal pump, XBSY centrifugal pump and all the parts, such as impeller, pump case, shaft, etc., welcome to send inquiry to us: sales@hlsolidscontrol.com if you have purchase request of it.