RU162285U1 - MACHINE FOR DOWNLOADING ANODE MASS - Google Patents

Abstract

1. Machine for loading the anode mass on the surface of the anode of the electrolytic cell for aluminum production, comprising a self-propelled chassis with a cab, a hopper transporting a horizontal auger, a vertical auger with the possibility of tilting and a centrifugal disc thrower, characterized in that the horizontal auger has a front support resting on the frame machines, and the vertical auger is installed at the end of the horizontal auger in front of the front support. 2. The machine according to claim 1, characterized in that the vertical auger is paired with a horizontal auger by extending the body of the horizontal auger with one side resting on the horizontal auger body and the other on the horizontal auger shaft. 3. The machine according to claim 1, characterized in that the horizontal auger is made with a gradual increase in the step to the discharge zone into the vertical auger. 4. The machine according to claim 1, characterized in that the centrifugal disc thrower on the plane of the blades, the inverse of the working plane, has reinforcing elements in the form of scarves.

Description

The machine belongs to the field of non-ferrous metallurgy and is intended for transporting briquettes of the anode mass to the electrolysis bodies, and for uniform loading of briquettes of mass onto the surface of the anodes of electrolytic cells for aluminum production.

A known machine for loading the anode mass into the anode of an aluminum electrolyzer (RF patent N2169214, class C25C 3/12, 2001), containing a self-propelled chassis, a hopper transporting horizontal and inclined screws and a working body. The machine is equipped with a screw batcher for feeding the anode mass from the hopper mounted on the shaft of the horizontal screw. The working body is made in the form of a centrifugal thrower with the ability to control the width of the grip and the range of distribution of the anode mass on the surface of the anode.

A disadvantage of the known technical solution is the low reliability of the machine due to the cantilever installation of the vertical screw on the horizontal and poor visibility from the workplace when loading the anode mass into the cell due to the location of the cabin on the opposite side of the machine from the thrower.

The closest in technical essence to the claimed solution is a machine for loading the anode paste (RF patent N2255145, class C25C 3/10, 2005). A hopper and transporting horizontal and inclined screws are placed on a self-propelled chassis. A screw feeder is installed on the horizontal auger shaft for feeding the anode mass from the hopper. The supply of the anode mass to the surface of the anode is carried out by the working body. To improve the technical and economic indicators of electrolysis and increase the reliability and productivity of the machine, it is equipped with a rotor made in the output part of the horizontal screw shaft for feeding the anode mass from the horizontal screw to the inclined one, and the working body is made in the form of a discus thrower placed in the casing. The casing is equipped with a guide tube and is mounted with the possibility of tilt and rotation relative to the inclined screw. The discus thrower is provided with stiffeners for feeding material into the guide tube, the height of the inner part of the stiffeners being greater than the height of their outer part. The tangent blades are fixed on the rotor hub.

A disadvantage of the known technical solution adopted for the prototype is the not sufficiently reliable design of the machine, the details of which are overloaded through a horizontal auger, and as a result are faster destroyed. Disadvantage: also the low reliability of the machine due to the cantilever installation of the vertical screw on the horizontal and poor visibility from the workplace when loading the anode mass into the cell due to the location of the cab on the opposite side of the machine from the thrower. In addition, the working elements (blades) of the thrower have insufficient strength, especially in the zone of the highest loads, since at the edges they have a minimum height, and therefore a smaller cross section.

The objective of this proposal is to increase the reliability of the design of the machine, increase the overhaul period of the machine while maintaining uniform distribution of the anode mass over the surface of the anode and improve visibility, which is achieved by maximizing the cabin to the thrower.

The technical result consists in developing the design of the machine, in which the support of the horizontal screw on the frame removes the consolidated loads on the parts through the screw.

The claimed technical result is achieved by the fact that in the design of the machine for loading the anode mass containing a self-propelled chassis, a hopper transporting a horizontal auger, a vertical auger with the possibility of tilting and a centrifugal disc thrower, in accordance with the claimed solution, the horizontal auger has a front support resting on the frame machines, and the vertical auger is installed at the end of the horizontal auger, in front of the front support.

The solution is complemented by private distinguishing features that enhance the technical result.

The interface unit of the vertical auger with the horizontal is a continuation of the horizontal auger body, has support on the one hand on the horizontal auger body, and on the other hand, on the horizontal auger shaft.

The horizontal auger is made with a gradual increase in the pitch to the discharge zone in the vertical auger, which prevents congestion when feeding the anode mass.

On the plane of the blades of the reverse thrower blades, reinforcing elements are installed in the form of scarves, which prevent the blades from being bent, thereby increasing reliability and eliminating the accumulation of the anode mass between the body and the thrower.

To control the supply of the anode mass, at least one gate is provided.

To improve visibility, the cabin is offset to the starboard side and mounted above the horizontal auger.

For access to the hopper, a ladder is installed, installed above the railing of the fence at the access platform to the cabin.

The essence of the utility model is illustrated by drawings, where:

in FIG. 1 is a left side view of an anode paste loading machine;

in FIG. 2 is a perspective view of FIG. 1, with a cut along the horizontal screw;

in FIG. 3 shows a general front view of the machine;

in FIG. 4 shows a general view of the right of the machine;

in FIG. 5 shows a general view of the discus thrower;

in FIG. 6 shows the site and the ladder of access to the bunker.

Feature List

Self-propelled wheel chassis 1,

operator's cab 2,

hopper 3,

horizontal auger 4,

vertical screw 5,

centrifugal disc thrower 6,

supports 7 of the hopper 3,

access ladder 8 to hopper 3,

railings of the fence 9,

access platform 10 to the cabin,

frame 11 cars

front gate 12,

rear gate 13,

the housing 14 of the horizontal screw 4,

front support 15 of the horizontal screw 4,

special blades 16,

spiral 17 horizontal screw 4,

the housing 18 of the vertical screw 5,

pairing 19 of the vertical screw 5 with the horizontal screw 4,

the shaft 20 of the horizontal screw 4,

thrower housing 21 6,

discharge funnel 22,

blades 23 thrower 6,

gain element 24.

The machine consists of a self-propelled wheeled chassis 1, on which technological equipment and an operator's cab are installed 2. Technological equipment consists of a hopper 3, a horizontal screw 4, a vertical screw 5 and a thrower 6 for loading the anode mass. The hopper 3 is mounted on four supports 7. For access to the hopper and inspection of the hopper, a ladder 8 is provided, located above the railing of the fence 9 on the access platform 10 to the cabin. The ladder is fixed on the front wall of the hopper. A motor unit (not shown) is installed on the left under the hopper 3 on the frame 11 of the machine.

The hopper 3 of the machine is welded, for example, from sheet metal, stiffeners are provided in the design.

To regulate the supply of the anode mass from the hopper 3 to the horizontal screw 4, the front 12 and rear 13 gates are provided in the lower part of the hopper. The opening-closing drive of the gates 12 and 13 is made from hydraulic cylinders (not shown). By adjusting the magnitude of the opening of the gates, the incoming anode mass is dosed into the horizontal screw, and, therefore, the performance of the machine is regulated.

The supply of the anode mass from the hopper 3 is carried out by a system of screws consisting of horizontal 4 and vertical 5 screws. The rotation drive of the vertical 5 and horizontal 4 screws is made by separate hydraulic motors.

The horizontal screw 4, under the hopper 3, is placed in the housing 14, made in the form of a pipe having a through groove on top, with which it adjoins the lower part of the hopper. In front of the hopper, the pipe is completely solid, has no longitudinal groove. The horizontal screw 4 is made of variable pitch, with the spiral pitch increasing to the overload zone in the vertical screw 5 and mounted on two bearing bearings in the housing 14. Using the front bearing 15, the horizontal screw 4 is supported on the machine frame 11. At the end of the spiral turns of the horizontal screw 4 there are special blades 16, which are used for overloading the anode mass into the vertical screw 5.

Vertical auger 5 is installed in front of the cab 2 on the right side of the machine. Vertical screw 5 is located between the front support 15 and the cab 2 with the possibility of swing. The rotation of the vertical screw 5 is due to two bearing bearings (not shown). The swing drive of the vertical screw 5 is carried out by a hydraulic cylinder. The coupling 19 of the vertical screw 5 is a continuation of the casing 14 of the horizontal screw 4, has support on the one hand on the casing 14 of the horizontal screw 4, and on the other, on the shaft 20 of the horizontal screw 4. Such a two-bearing design of fastening the vertical screw reduces the load on the horizontal screw, increases the reliability of the connection.

Unloading the anode mass from the vertical screw 5 is carried out in the thrower 6.

The thrower 6 consists of a housing 21 with an unloading funnel 22. Inside the housing 21, the blades 23 rotate on bearings, which, due to centrifugal forces, scatter an anode mass through the unloading funnel 22. The blades 23 are made in the form of plates, on the plane of the blades 23 of the thrower 6 of the reverse working, reinforcing elements are installed in the form of scarves 24. The rotation of the thrower 6 is driven by a hydraulic motor. The thrower 6 has the ability to bend with the discharge funnel 22 up and down and rotate left and right. Tilt drive and thrower rotation drive from hydraulic cylinders.

To improve visibility from the workplace, the cab is shifted to the starboard side of the machine, is as close as possible to the thrower and is mounted above the horizontal auger, while providing good visibility when loading the anode mass into the electrolyzer, safe, convenient operator access to the cab is ensured due to the area between the cab and the gauge cars and convenient access to the operator from the platform for inspection of the inside of the hopper.

Machine for loading the anode paste works as follows.

After loading the anode mass into the hopper 3, the machine delivers it to the electrolyzer on its own. When loading the hopper 3 and when moving the machine, the front gate 12 and the rear gate 13 are in the closed position, covering the horizontal auger 4, and the vertical auger 5 - in the transport position.

When distributing the anode mass into the anode of the electrolyzer, the vertical screw 5 is set to its working position by means of a hydraulic cylinder. The centrifugal discus thrower 6, the vertical screw 5 and the horizontal screw 4 are sequentially rotated. After opening the rear gate 13 with the hydraulic cylinder, the anode mass is fed from the hopper 3 onto the spirals of the horizontal screw 4 and then through special blades 16 to the vertical screw 5, where it rises to the level of the anode and the centrifugal disc thrower 6 is distributed over the surface of the anode. Through the discharge funnel 22, the direction of movement of the anode mass is set, by moving the housing 21 of the thrower 6 due to the hydraulic cylinder up-down and left-right and the distribution of the anode mass along the length of the anode is provided, including the supply of mass to the places behind the pins.

The inventive machine has a reliable design and can increase the overhaul period during operation while maintaining uninterrupted supply, eliminating accumulations of the anode mass between the body and the thrower, and evenly distributing the anode mass over the surface of the anode. The machine differs from the known lower values of consolidated loads on the parts through the horizontal auger and in general - higher reliability and efficiency.

The presented positive results were confirmed by production tests carried out in the electrolysis enclosures of the OK RUSAL plant according to the formula of the anode paste loading machine.

Claims (4)

1. Machine for loading the anode mass on the surface of the anode of the electrolytic cell for aluminum production, containing a self-propelled chassis with a cab, a hopper transporting a horizontal auger, a vertical auger with the possibility of tilting and a centrifugal disc thrower, characterized in that the horizontal auger has a front support resting on the frame machines, and the vertical auger is installed at the end of the horizontal auger in front of the front support. 2. The machine according to claim 1, characterized in that the vertical auger is paired with a horizontal auger by extending the body of the horizontal auger with one side resting on the body of the horizontal auger, and the other on the shaft of the horizontal auger. 3. The machine according to claim 1, characterized in that the horizontal auger is made with a gradual increase in the pitch to the discharge zone into the vertical auger. 4. The machine according to p. 1, characterized in that the centrifugal disc thrower on the plane of the blades, the inverse of the working plane, has reinforcing elements in the form of scarves.

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