(1) end friction sub (dynamic, static ring) to maintain a close fit to form the sealing surface to prevent media leakage. Requires moving and static ring has good wear resistance, moving ring can move axially, automatically compensate the seal surface wear, so that it fits well with the static ring, static ring has floating, buffer role.
(2) elastic element (spring, corrugated plate, serpentine sleeve, etc.) mainly plays the role of compensation, preload and buffering, but also to produce a reasonable ratio of pressure on the sealing end face factors. It is required to always maintain the elasticity to overcome the friction of the auxiliary seal and transmission parts, and to start the ring compensation role.
(3) auxiliary seal (0-shaped ring, V-shaped ring, wedge-shaped ring and other shaped seal ring) mainly plays a static ring and dynamic ring sealing role, but also play the role of floatability and buffer. The auxiliary sealing element of the static ring is required to ensure the sealing between the static ring and the gland, so that the static ring has a certain floatability; the auxiliary sealing element of the dynamic ring ensures the sealing between the dynamic ring and the shaft or sleeve. The material requires heat and cold resistance aspects close to the medium.
(4) transmission parts (transmission pin, transmission ring, transmission seat, transmission sleeve, transmission keys, transmission lugs or tooth-embedded couplings), whose role is to transfer the torque of the shaft to the moving ring. Material requirements for corrosion and wear resistance.
(5) fastening parts (set screws, spring seat, gland, assembly sleeve, sleeve) plays a static, dynamic ring positioning, fastening role. Requires correct positioning to ensure that the frictional sealing surface in the correct position, and to maintain a good fit of the spring than the pressure; at the same time requires easy disassembly and installation, easy to position, can be used repeatedly. With the auxiliary seal should pay attention to the installation of the seal ring chamfer and pressure spring amount, pay special attention to the dynamic ring seal with the sleeve, requiring corrosion and wear resistance, if necessary, the use of hard surface compound.
Post time: Jul-11-2023
