RU2251459C1 - Centrifuge - Google Patents

Abstract

FIELD: equipment for separating liquid non-homogenous systems in centrifugal force field, possibly in mining, chemical, food making, paper and pulp, other industry branches.

SUBSTANCE: centrifuge includes housing having receptacle for liquid and solid phases; apparatus for feeding suspensions, drive unit, shaft and mounted on shaft cone filtering rotor. Inside rotor acceleration-distribution apparatus provided with trap is coaxially mounted. Centrifuge is also includes stabilizing cone embracing said trap and having annular lips on inner surface. Acceleration-distribution apparatus has acceleration cup rigidly secured to cone trap inside it and ring arranged between trap and stabilizing cone.

EFFECT: enhanced quality of ready product.

2 dwg

Description

The invention relates to devices for separating liquid heterogeneous systems in the field of centrifugal forces and can be used in mining, chemical, food, pulp and paper and other industries.

Famous centrifuge dryer FVI-S (Filter pumps for liquids / Centrifuge Dryers, publishing house MGO “Tekhnohim” / ONPO “Plastpolymer”, L .: 1991, p.7), including a housing, a filtering rotor, a circular knife, accelerator device, shaft, drive, solid and liquid phase receivers.

A disadvantage of the known centrifuge is the low quality of the final product and the limited functionality of the unit.

A known centrifuge (RF patent No. 1061844, publ. 1983), adopted as a prototype, comprising a housing, a shaft, a drive, a filtering rotor located inside the rotor is an accelerator-distribution device with a trap of impurities, and solid and liquid phase receivers.

A disadvantage of the known centrifuge is the low quality of the final product, due to the fact that the device for removing impurities is made in the form of a set of rings fixed on the outside by a set of straight rigid metal ribs, which leads to damage to the crystals of the solid phase, for example sugar, and their crushing, when the suspension stream, for example, massecuite, from a feeder with zero peripheral speed collides with ribs having a peripheral speed at a rotor speed of n = 1760 rpm

where D = 0.35 m is the average diameter of the ribs.

The technical result is to eliminate this drawback, namely improving the quality of the final product.

The technical result is achieved in that a centrifuge containing a housing with receivers of liquid and solid phases, a device for supplying suspensions, a drive, a shaft and a conical filtering rotor mounted on it with an accelerator-distributing device with a trap coaxially located inside it, is provided with a trap enclosing stabilizing cone with annular thresholds on its inner surface, and the accelerator-distributing device is equipped with an accelerator bowl rigidly fixed inside the conical ears, and a ring disposed between the trap and the stabilizing cone.

Thanks to such a centrifuge, high quality products are obtained.

The invention is illustrated by drawings, where figure 1 shows a longitudinal section of a centrifuge, and figure 2 is an enlarged scale of the accelerator-distribution device.

The centrifuge contains a housing 1, which is the receiver of the solid phase; liquid phase 2 receiver; device for feeding suspensions 3; shaft 4, a conical filtering rotor 5 mounted on the shaft with an accelerator-distribution device; accelerating bowl 6; a conical trap 7 located outside the bowl with slots 8 and a ring 9, a stabilizing cone 10 with thresholds 11 surrounding the trap. A pipe 12 is placed in the receiver of the liquid phase 2 for its removal.

The centrifuge has a vertical drive not shown in the drawings.

The device operates as follows.

When the shaft (4) and the filter rotor (5) rotate from the drive, the suspension is fed through the device (3) to the accelerator bowl (6), where it smoothly and unstressed accelerates to the angular rotor speed and moves upward through the slots (8) ) of the trap (7) and falls on a stabilizing cone (10), along which it moves downward with an annular layer, the thickness of which slightly increases in the threshold zone (11), the motion stabilizes, which leads to a uniform thickness of the annular layer and, as a result, to its uniform feed to the bottom. Next, the suspension moves along the surface of the filter sieve placed in the rotor (5), under the action of the tangential component of the centrifugal force. In this case, under the action of the normal component of the centrifugal force, the suspension is divided into solid (sediment) and liquid (outflow) phases. The solid phase flies from the upper edge of the filter rotor (5) into the housing (1), and the liquid phase, passing through the filter sieve of the rotor (5), enters the receiver (2) in the form of a rapidly rotating aerosol ring and small droplets that settle on a cylindrical wall and flow down and down the pipe (12) are discharged from the receiver (2). If solid lumps or impurities accidentally get into the rotor, they are trapped by the trap ring (9) (7) and removed manually when the centrifuge stops.

Thus, the proposed centrifuge with such an accelerator-distributing device provides high-quality products.

Claims (1)

A centrifuge comprising a housing with receivers of liquid and solid phases, a device for feeding suspensions, a drive, a shaft and a conical filtering rotor mounted on it with an accelerating-distributing device with a trap placed coaxially inside it, characterized in that the centrifuge is equipped with a stabilizing cone with ring-shaped traps surrounding the trap thresholds on its inner surface, and the accelerator-distribution device is equipped with an accelerator bowl, rigidly fixed inside the conical trap, as well as a ring, located nym between a trap and a stabilizing cone.

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