Classification of the composition and benefits of mechanical seals Mechanical seals

Classification and benefits of mechanical seals








Composition and classification of mechanical seal Mechanical seal components and benefits

The pump mechanical seal is a device composed of at least one pair of end faces perpendicular to the axis of rotation, under the influence of fluid pressure and the elasticity (or magnetic force) of the compensating mechanism, which together help seal, keep the seal closed and relatively slide. Prevent fluid leakage from each other.

Composition of pump mechanical seal

(1) Main components, including moving ring and static ring;

(2) Auxiliary seal, mainly refers to the seal ring;

(3) Elastic compensation mechanism, mainly including spring and push ring;

(4) Transmission parts, skip seats and keys or various screws.


Classification of mechanical seals for pumps

According to whether the spring element is rotating or stationary, it can be divided into two types: rotating type and static type; according to the direction of leakage of the sealing medium, it can be divided into two types: internal flow type and external flow type; according to the unloading situation caused by the medium on the end surface, it can be divided into two types: There are two types: balanced type and unbalanced type; according to the position of the static ring, it can be divided into internal type and external type; according to the temperature in the sealing cavity, it can be divided into four types: high temperature seal, medium temperature seal, normal temperature seal and low temperature seal; According to the pressure in the sealing chamber, it can be divided into mechanical seals for pressure pumps, mechanical seals for high-pressure pumps, mechanical seals for medium-pressure pumps and mechanical seals for low-pressure pumps; according to the number of springs, they can be divided into single spring type and multi-spring type. ;According to the non-contact pump mechanical seal structure, it can be divided into hydrostatic pressure type, hydrodynamic pressure type and dry gas seal type; according to the division of elastic elements, it can be divided into spring compression type and bellows type.