UA122288C2 - COUNTERWEIGHT CONCENTRATION SEDIMENT - Google Patents

Abstract

The invention relates to devices for separating mixtures of liquid and solid, and can be used in mining, chemical and other industries. Countercurrent precipitating centrifuge includes a housing mounted in a rotor consisting of three parts, the ends of which are truncated cones, which with their larger bases are in contact with the central part, located inside the rotor coaxially screw, made in the form of a drum, with reinforced turns spiral, in one truncated cone made windows for unloading the solid phase, in the other - holes for draining the liquid phase, according to the invention, the Central part is also a truncated cone, which is larger in contact with the truncated cone, which has holes for draining liquid phase, and the centrifuge is equipped with drain plugs installed at the junction of the Central part and the cut cone, which has holes for draining the liquid phase. In addition, the drain plug is an automatic drain valve. The technical result achieved by using the present invention is to improve the quality of the process by ensuring complete leakage of the liquid phase during draining.

Description

The invention belongs to devices for separating liquid and solid mixtures, and can be used in mining and processing, chemical and other industries.

An analogue of the claimed centrifuge is a countercurrent centrifuge, which includes a body, a rotor consisting of cylindrical and conical parts, with holes for draining fugat and windows for discharging sediment and an auger, placed coaxially with the rotor and made in the form of a drum with turns fixed on it spirals, (patent of Ukraine for utility model Mo 27997, publ. 26.11.2007).

Among the disadvantages of this analogue should be attributed the large energy costs for transporting the solid phase with a screw along the entire length of the cylindrical part of the rotor to its discharge windows.

Also known is the Biomed centrifuge-sedicanterF, which includes a body, a rotor consisting of two conical parts, and an auger placed coaxially with the rotor and made in the form of a drum with spiral turns fixed on it.

In this device, the solid and liquid phases move in the same direction (Internet resource - tai«FpPoimed.sot).

The differences of this analog include the fact that such a centrifuge is direct-flow.

The closest analogue of the claimed centrifuge is a countercurrent centrifuge, which includes a body, a rotor installed in it, which consists of three parts, the outermost of which are truncated cones, and the central part is made in the form of a cylinder, the truncated cones are in contact with the central one with their larger bases part of Inside the rotor, a screw is coaxially located, made in the form of a drum with spiral turns fixed on it. In one truncated cone, windows are made for the discharge of the solid phase, in the other - holes for the removal of the liquid phase. At the same time, the part of the auger placed in the truncated cone with windows for discharging the liquid phase has a step that is successively increased towards the smaller base of the truncated cone. (Russian patent for the invention No. 2649448 "Sedimentary Centrifuge" dated January 17, 2017, published April 3, 2018)

The disadvantages of the closest analogue include the incomplete draining of the liquid phase when the centrifuge is stopped, which worsens the quality of the technological process, especially for the food industry.

The basis of the invention is the technical task of creating such a countercurrent centrifuge

From the sedimentation plant, in which, due to the implementation of a new constructive shape of the rotor, it would be possible to ensure the improvement of the draining of the liquid phase during the stop of the centrifuge and, due to this, to improve the quality of the technological process.

The technical result, which is achieved when using this invention, consists in improving the quality of the technological process.

This technical result is achieved by the fact that the countercurrent sedimentation centrifuge includes a housing, a rotor installed in it, which consists of three parts, the extremes of which are truncated cones, which are in contact with the central part with their larger bases, a coaxial screw is located inside the rotor, made in the form of drum, with spiral turns fixed on it, in one truncated cone there are windows for discharge of the solid phase, in the other - holes for draining the liquid phase, according to the invention, the central part is also a truncated cone, which is in contact with the truncated cone with its larger base, in which holes are made for draining the liquid phase, and the centrifuge is equipped with drain plugs installed at the junction of the central part and the truncated cone, in which holes are made for draining the liquid phase.

In addition, the drain plug is an automatic drain valve.

The comparison analysis with the closest analogue shows that the claimed centrifuge differs in that the central part is also a truncated cone, which with its larger base is in contact with the truncated cone, in which holes are made for the removal of the liquid phase, and the centrifuge is equipped with drain plugs installed at the junction of the central part and the truncated cone, in which holes are made for the removal of the liquid phase.

In addition, the drain plug is an automatic drain valve.

The causal relationship between the set of essential features of a technical solution and the technical result that is achieved is as follows.

In the centrifuge - the closest analogue of this invention, the lowest point of the rotor is connected to the horizontal component of the central part of the rotor, made in the form of a cylinder. This does not facilitate the draining of the liquid when the centrifuge is stopped. In the claimed centrifuge, the central part of the rotor is made in the form of a truncated cone, which contributes to the draining of the liquid phase, therefore, the execution of the central part of the rotor in the form of a truncated cone is an essential feature of the invention.

Equipping the centrifuge with drain plugs also affects the achievement of the technical (516) result.

The essence of a useful model is explained by a drawing showing the general appearance of a centrifuge.

The sedimentation centrifuge contains a housing 1, a rotor 2 installed in it, which consists of three parts. The outermost of them are truncated cones C and 4, which with their larger bases come into contact with the central part 5, which is also made in the form of a truncated cone.

Inside the rotor, a screw b is coaxially located, made in the form of a drum 7 with turns of a spiral 8 fixed on it.

In the truncated cone C, windows are made for unloading the solid phase 9, and in the truncated cone 4, holes are made for the removal of the liquid phase 10.

The centrifuge is equipped with a feed pipe 11 for supplying the suspension to the rotor 2.

The centrifuge is also equipped with drain plugs 12, installed at the junction of the central part 5 with the truncated cone 4 with windows for the removal of the liquid phase.

In a separate case, drain plugs 12 are automatic drain valves.

The centrifuge works as follows.

The suspension to be separated enters the rotor 2 of the centrifuge through the feed pipe 11 and fills the rotor 2.

In rotor 2, under the action of centrifugal forces created by the rotation of the rotor, the suspension is separated into solid and liquid phases. The solid phase is thrown to the walls of the rotor 2.

The turns of the spiral 8 of the auger 6 move the solid phase along the truncated cone From the rotor to the solid phase discharge windows 9.

The liquid phase formed during the separation of the suspension flows in the opposite direction - to the holes for removing the liquid phase 10.

When the centrifuge is stopped, the liquid phase is drained. Due to the design features of the rotor, namely, the execution of the central part of the rotor in the form of a truncated cone, the liquid phase completely flows out of the centrifuge, which contributes to the improvement of the quality of the technological process.

Claims (2)

FORMULA OF THE INVENTION Koo) 1. A countercurrent sedimentation centrifuge containing a housing, a rotor installed in it, which consists of three parts, the outermost of which are truncated cones, which are in contact with the central part with their larger bases, a coaxial screw is located inside the rotor, made in the form of a drum, with fixed on it by turns of a spiral, in one truncated cone there are windows for discharge of the solid phase, in the other - holes for the removal of the liquid phase, which is distinguished by the fact that the central part of the rotor is also a truncated cone, which is in contact with the truncated cone with its larger base, in which has holes for draining the liquid phase, and the centrifuge is equipped with drain plugs installed at the junction of the central part and the truncated cone, which has holes for draining the liquid phase. 2. Centrifuge according to claim 1, which differs in that the drain plug is an automatic drain valve.