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The Agitator Seal Increases Turbulence
May 15, 2017

Mixer seal type ① propeller-type stirrer from 2 to 3 propeller propeller blades, working speed is higher, the outer edge of the blade peripheral speed is generally 5 ~ 15m / s. The agitator sealed propeller stirrer mainly produces axial flow, Agitator Seals resulting in a large amount of circulation, suitable for mixing low viscosity (<2Pa · s) liquid, emulsion and solid particles less than 10% of the suspension. The shaft of the stirrer can also be inserted horizontally or obliquely into the tank. At this time, the circulating circuit of the liquid flow is asymmetrical, which can increase turbulence and prevent the liquid level from sagging.

In addition, the peripheral speed of the outer edge of the blade is generally 5 ~ 15m / s. The rotation speed of the blade is usually 5 ~ 15m / s. The propeller-type agitator is mainly used for agitating low viscosity (<2Pa · s) liquid, the emulsion and solid particles are lower than the 10% of the suspension. The shaft of the stirrer can also be inserted horizontally or obliquely into the tank. At this time, the circulating circuit of the liquid flow is asymmetrical, which can increase turbulence and prevent the liquid level from sagging.

There are two types of agitators for the desulfurization tower of the power plant. There are two types of installation in the Agitator Seals form of a stirrer and a side-mounted stirrer. The top-mounted stirrer is installed on the top of the tank for stirring the limestone solution, Solution, etc., to prevent precipitation. The stirrer is used in the wet desulfurization tower, which is used to stir the slurry in the absorption tower to prevent the precipitation, so that limestone and other desulfurization additives for mixing and transportation, while promoting the uniform oxidation of air, is conducive to the slurry The reaction is carried out.

The stirrer is sealed by the mixing of the liquid in the shearing tank. The stirrer seal is subjected to axial and radial forces, and the two forces are constantly changing due to the gradual addition of the liquid. For the vertical shaft design and bearing selection, from the original design to the top of the fixed, the lower end of the swimming design, the upper bearing selection of two angular contact ball bearings back to back installation, because the angular contact ball bearings can withstand axial force , And can withstand the radial force, and the ball bearing to adapt to the high-speed, back to back when the bearing contact angle along the rotation axis of the direction of diffusion, can increase its radial and axial support angle rigidity, resistance to deformation of the largest; Inner and outer ring separable cylindrical roller bearings, mainly to bear radial force. The stress generated by the heat generation deformation during operation.

The agitator seal is a rotary oil seal device. Such as centrifugal pumps, centrifuges, reactors and compressors. As the drive Agitator Seals shaft penetrates inside and outside the equipment, there is a circumferential gap between the shaft and the device, and the media in the equipment leaks out through the gap. If the pressure in the equipment is below atmospheric pressure, the air leaks into the equipment, so there must be a To prevent leakage of the shaft seal device. Many types of shaft seals, because the mixer seal with less leakage and long life, etc., so the world today, the mixer is the main seal in these devices seal the way. The agitator seal, also called the end seal, is defined in the relevant national standard: "By at least one pair of faces perpendicular to the axis of rotation, the action of the fluid pressure and the resilient (or magnetic) of the compensating mechanism and the auxiliary seal And a device that prevents the fluid from leaking.

Seal is divided into: packing seal, stirrer seal, enamel seal