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The Agitator Seal Has Good Abrasion Resistance
Jul 28, 2017

The basic components of the agitator seal function as follows:

(1) End-face friction pair (dynamic, static ring) to maintain a tight fit to form a sealing surface to prevent media leakage. The requirements of dynamic and static ring have good wear resistance, Agitator Seals dynamic ring can be axial movement, automatic compensation seal surface wear, make it and static ring good fitting, static ring has floating, play a buffering role.

(2) Elastic elements (Spring, corrugated plate, serpentine sleeve and so on, the main compensation, preload and buffering effect, but also to the sealing end of the reasonable pressure factor. It is required to maintain the elasticity to overcome the friction of the auxiliary seals and the transmission parts, Agitator Seals and to activate the ring compensation. Material requirements Corrosion resistance 0

(3) Auxiliary seals (0-ring, V-ring, wedge-shaped ring and other special-shaped sealing ring) mainly play the role of static and dynamic ring sealing, but also play a role of floating and buffering. Agitator Seals 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 floating property. The auxiliary sealing element of the movable ring ensures the seal between the movable ring and the shaft or the sleeve. The material requires that the heat-resisting and cold resistance be close to the

(4) Transmission parts (transmission pin, transmission ring, driving seat, Agitator Seals transmission sleeve, transmission key, drive or tooth embedded connector), its role is to transfer the shaft torque to the dynamic ring. The material requires corrosion resistance and abrasion resistance.

(5) Fastening parts (tightening screws, spring seat, gland, assembly sleeve, sleeve) play a static, dynamic ring positioning, tightening role. The correct position is required to ensure that the seal surface of the friction pair is in the correct location and the spring pressure is kept well. At the same time, Agitator Seals disassembly is convenient, easy to position, can be reused. With auxiliary seals should pay attention to the installation of the sealing ring chamfer and the amount of pressure, special attention to the dynamic ring seals and bushings, Agitator Seals the requirements of corrosion resistance and wear, when necessary, the use of hard face complex layer.

The possible leakage pathways for agitator seals are mainly three:

(1) The seal surface of the end friction pair leaks A, this is the main sealing surface, determines the agitator seals the friction and the seal performance

The key is also to determine the working life of the agitator seal. Therefore, the requirements of the contact end surface is very high, the roughness requirements close to the mirror, the flatness must be up to 0. o009mm. For different media, it is necessary to use suitable friction pair material combination, Agitator Seals pay attention to abrasion resistance, corrosion resistance, select the appropriate geometrical parameters (load coefficient, width-diameter ratio, etc.) and performance parameters (specific pressure, spring, pressure ratio, etc.).

(2) Leakage of the static ring seal of the static ring and the gland and the dynamic ring seal of the moving ring and the shaft (sleeve) leakage D, is the auxiliary sealing surface, determines the sealing of the agitator seal and the key to the floating of the dynamic ring, Agitator Seals especially the sealing surface of the movable ring and the axle (sleeve), first should prevent the rust scale or the chemical reaction material accumulation causes the dynamic ring "to hold" (does not play).

(3) Static seal of C and sleeve and shaft of gland and sealed enclosure E, both of these are static seals, which can be selected according to the sealing medium. In addition, if the dynamic ring adopts mosaic structure, it may also leak in the Mosaic interface, it must pay attention to the coordination of the area.