SU745542A1 - Separator for polydispersed systems - Google Patents

Description

(54) SEPARATOR FOR SEPARATION OF POLYDISPERS SYSTEMS

I

This invention relates to separators for liquids, such as milk, and can be used in the food, oil refining, chemical and other industries and in agriculture.

A separator for separating polydisperse systems is known, comprising a housing with an electric motor stator housed therein and a drum mounted on a shaft in a bearing support, which is a rotor of an electric motor 1. A needle bearing is placed in the gap between the stator and the rotor.

In such a separator, the needle bearing prevents the drum from striking the stator and reduces the magnetic resistance of the air gap, which leads to an increase in the power factor and the efficiency of the electric motor.

This separator structure has the disadvantage that it is difficult to implement in practice: it has limited mechanical strength, greater rotational speed, and is proportional to the ratio of the diameters of the drum and the needle when

In the absence of a lubricant, the needle bearing is little reliable in operation. . The aim of the invention is to increase the power factor of the motor and increase the reliability of the separator.

To do this, in the proposed separator, the inner surface of the stator or the section of the drum located inside the stator, or both are simultaneously tapered with an increase in the air gap between them from the fulcrum in the axial

10 direction.

FIG. 1 shows the proposed separator in section; in fig. 2 and 3 are embodiments of the proposed separator.

15

The separator includes a housing 1, a stator 2 mounted with a winding 3 and a drum 4 mounted on the shaft 5. The shaft 5 is housed in the throat bearing 6 and the support bearing 7. The inner surface of the stator ((see Fig. 2) or the drum section located inside the stator (see Fig. 1), or both at the same time (see Fig. 3) are made conical with an increase in the air gap between them from

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POINTS bearing support 7 in the axial direction.

CeiiapSfOpdl division polydisperse systems works as follows.

After applying voltage to the winding 3 of the stator 2, the drum 4 begins to rotate. As it approaches the critical speed, the drum 4, together with the shaft 5, begins to oscillate around the vertical axis. The amplitude of the oscillations increases as one approaches the critical speed, and when the critical speed is reached, it becomes maximum. The oscillation amplitude of any point of the drum 4 is proportional to the distance from this point to the support point created by the bearing 7 of the shaft 5.

By making the inner surface of the stator 2 or the portion of the drum 4 located inside the stator 2, or both conical at the same time as the gap between them increases in the axial direction from the fulcrum created by the bearing 7, the gap with the maximum deviation of the drum 4 from the vertical axis provides sufficient to avoid the drum 4 being touched by the stator 2.

In this case, the average air gap value is less than the gap size selected by the maximum amplitude of oscillation of the drum 4 in the case that the surfaces of the stator 2 and the drum 4 are cylindrical. ,, .. ,, „....,.,. I.-. i ,,. .. V.v.-.--.; .-- v.v: ..;: .., -,

The IB KrasnEDyrskbm Polytöniche Sk6m Institute has created and tested high-speed separators based on the industrial models Saturn-2 and COM3-1000. The tests showed the inoperability of the structure in which the gap between the surfaces

745542

the drum and the stator are made smaller than the maximum deflection of the drum from the vertical axis: during the acceleration of the drum “striking the stator and then jamming, the stator winding blows and as a result the engine goes out of order.

When the gap was larger than the drum oscillation amplitude, the prototype worked without breakage for two days (after this period the tests were discontinued).

With the conical shape of the drum surface, the separator also worked, not a failure during two days, at the same time the energy performance significantly improved: the power factor increased by 11%, and the efficiency by 90 / o.

Claims (1)

Invention Formula A separator for separating polydisperse systems, comprising a housing with an electric motor stator placed in it and a drum mounted on a shaft in a bearing bearing, which is an electric motor rotor, characterized in that, in order to increase the power factor of the electric motor and increase the reliability of the separator, the internal stator surface or portion the drum, located inside the stator, or both are simultaneously made conical with an increase in the air gap between them from the point of support, in axial direction and. Sources of information taken into account during the examination 1. USSR Author's Certificate, No. 525475, cl. B 04 B 9/02, 1974 (prototype).