In mechanical seals, what is a cartridge seal?

In mechanical seals, what is a cartridge seal?

Mechanical seals, also known as face seals, are mainly used to seal the rotating shafts of pumps, compressors, hydraulic transmissions and other Grundfos mechanical seals and similar equipment. The mechanical seal is a sealing device composed of a plane friction pair composed of one or several pairs of moving rings and static rings. Classification of mechanical seals: According to the rotation or static of the spring element, it can be divided into: rotary internal internal flow unbalanced single-face seal, referred to as rotary type; static external internal flow balanced single-face seal, referred to as imported mechanical seal static type. Mechanical-related information The seal relies on a pair or several pairs of end faces that are perpendicular to the shaft of the cartridge mechanical seal for relative sliding to keep fit under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, and cooperate with auxiliary seals to prevent leakage. Shaft seal device. It consists of static ring (static ring) 1, rotating ring (moving ring) 2, elastic element 3, spring seat 4, set screw 5, rotating ring auxiliary sealing ring 6 and stationary ring auxiliary sealing ring 8 and other components. 7 is secured to the gland 9 to prevent the stationary ring from rotating. There are four possible ways of fluid leakage in the mechanical seal, as shown in Figure 1, A and D.