The characteristics of the cartridge mechanical seal introduce the mechanical seal

Introduction to the characteristics of the cartridge mechanical seal

2021-08-31 09:58

The first is to use the transport“container”concept, resulting in a cartridge seal. The torsion and static parts of this kind of mechanical seal are pre-assembled into a whole before installation. After passing the inspection and pressure test, they are set on the inner shaft of the shaft seal box, fixed on the shaft with set screws, tightened the gland bolts, and removed. When the positioning piece is assembled, the mechanical seal is in the working state of the parallel plane and put into operation. This is not only easy to assemble but also ensures the quality of assembly. Welded metal bellows mechanical seals are all made of cartridge seals, which have the above advantages. The cartridge seal is also a cartridge mechanical seal. The static ring, moving ring, shaft sleeve, gland and auxiliary seal of this seal are all assembled together with a shaft sleeve before installation, which is convenient for checking the assembly quality. After passing the inspection, just tighten the sealing cover and tighten the screws. Such pre-assembled, inspected and tested sealing components can easily ensure the quality of installation and assembly. This cartridge seal has the following features:

(1) There is no need to measure the working length of the seal during installation;

(2) The axis can be adjusted at any time;

(3) There will be no leakage problems at start-up, because the seals have been pre-tested;

(4) During installation, it is only necessary to set and tighten the sealing cover bolts, and the assembly quality is easy to guarantee;

(5) To protect the sealing surface from contamination by sundries or damage due to mishandling during installation or start-up;

(6) Machine equipment can be readjusted after thermal stretching;

(7) The center can be determined by using coordination;

(8) It is easy to take out the seal for cleaning and inspection without disassembling the pump equipment. The API682 standard recommends that all mechanical seals use cartridge mechanical seals.