RU171457U1 - DEVICE FOR PUNCHING ELECTROLYTE Crust - Google Patents

Abstract

The device is intended for punching the electrolyte crust in an electrolytic cell for aluminum production. The device includes a telescopic boom retractable section associated with the extension hydraulic cylinder and located in the housing, a working body equipped with a working tool and a tilting hydraulic cylinder. An inclined section is fixed on the sliding section on the axis of the hinged support of the sliding section with the possibility of rotation in a vertical plane relative to the longitudinal axis of the sliding section. The working body is made in the form of a hydraulic hammer and is rigidly fixed to the inclined section. The tilt cylinder is mounted on the hinge supports of the drawer section, and the tilt cylinder rod is mounted on the hinge support of the drawer section. The tests of the device confirmed the operability and reliability of the design. 4 s.p. f-ly, 3 ill.

Description

The utility model relates to the field of non-ferrous metallurgy, in particular, to equipment used for technological maintenance of electrolyzers for aluminum production. The device is intended for punching the electrolyte crust in an electrolytic cell for aluminum production.

When aluminum is produced by electrolysis from molten cryolite containing dissolved aluminum oxide, an electrolyte crust forms on the surface of the melt in the board-anode space, which must be periodically destroyed (punched) in accordance with the requirements of the technology.

A device is known for destroying the crust of an electrolyte in electrolysis cells for producing aluminum, comprising a self-propelled carriage with a vertical frame and an arrow mounted on it, made with the possibility of its raising and lowering, and a jacking device. The frame is mounted on the side of the trolley, the boom is mounted on the frame and is made to extend forward by means of rotary rods. The centers of rotation of the rods in the upper part are offset relative to each other vertically. The fender device, made in the form of a transmission spring vibratory hammer, is installed on the free end of the boom. The vibratory hammer consists of a vibration exciter mounted on the free end of a spring-loaded swing beam, a hydraulic motor and peaks. According to a variant of the device, the vibratory hammer consists of a double-shaft exciter, on which the unbalances are asymmetrically located, and connection nodes consisting of guide rods, springs, bushings and a locking device (RF patent No. 2128248, C25C 3/14, 1997). Significant overall dimensions of the installation impede its operation in the cramped conditions of the electrolysis cell. In addition, the treatment of the crust is difficult, and in some places impossible, when automatic alumina feeding systems are installed on the electrolyzer.

The closest in technical essence to the claimed device is a removable working equipment, including a lifting cylinder, a telescopic system containing an outer section, the trunnion of which and the lifting cylinder are connected to the node for their rotation in a horizontal plane, and a retractable section with a working body. The axle axis is located in the horizontal plane of symmetry of the outer section. In this case, the axis is equipped with a lever with an additional trunnion located with the possibility of alternating connection with the rotary assembly and the hydraulic cylinder for lifting the telescopic system. The retractable section is mounted rotatably in the outer section through 180 ° along the longitudinal axis (USSR author's certificate No. 1155677, metro class E02F 3/28, publ. 05.15.1985).

The disadvantage of this device is that it cannot be used when working in confined spaces. The bulkiness of the working body of this device and the complex connection of structural elements impede the introduction of the device in aluminum plants.

The objective of this technical solution is to create a reliable and high-performance device for punching the crust of the electrolyte on electrolyzers to produce aluminum, increasing the service life of the working body, while simplifying its design.

The technical result is to simplify the design, by reducing parts during assembly of the device, and increasing the reliability of the working body, by reducing the risks of failure of the articulated joints.

The technical essence of the proposed solution is as follows

In the device for punching the crust of the electrolyte, including a telescopic boom extendable section connected to the extension hydraulic cylinder and located in the housing, configured to be fixed on the base machine, a working body equipped with a working tool and a tilt hydraulic cylinder, according to the claimed solution, the device further comprises an inclined section, fixed on a sliding section with the possibility of rotation in a vertical plane relative to the longitudinal axis of the sliding section, and the working body is rigidly fixed on an inclined section.

The device clarify additional features.

The working body is made in the form of a hydraulic hammer and is mounted on an inclined section with bolts.

The inclined section is fixed to the axis of the articulated support of the extendable section.

The tilt cylinder is mounted on the hinge supports of the drawer section, and the tilt cylinder rod is mounted on the hinge support of the drawer section.

The body of the telescopic boom is rigidly fixed to the bracket for mounting on the base machine.

The utility model, its features, details and advantages can be understood from the description given with reference to the accompanying drawings, illustrating an example implementation of the utility model, where the figures show: in FIG. 1 - device for punching the crust of the electrolyte; in FIG. 2 - device for punching the crust of the electrolyte, front view; in FIG. 3 - a device for punching the crust of an electrolyte mounted on a base machine — view from the right.

The list of structural elements: retractable section 1 telescopic boom; Pavilion 2; sliding guides 3; bracket 4; axis 5; articulated support 6 of the sliding section 1; inclined section 7; bracket 8; hydraulic hammer 9; bolts 10; peak 11; extension hydraulic cylinder 12; axis 13; pivot bearing 14; axis 15; pivot bearing 16; curved bracket 17; tilt cylinder 18; pins 19; pivot bearings 20; axis 21; pivot bearing 22.

The device for punching the crust of the electrolyte contains a retractable section 1 of a telescopic boom fixed in the housing 2 with the possibility of telescoping along the sliding guides 3. The housing 2 is rigidly mounted on the bracket 4, made with the possibility of fixing on the base machine. An inclined section 7 is mounted on the axis 5 of the hinged support 6, mounted on a telescopic boom extension 1, with the possibility of rotation in a vertical plane relative to the longitudinal axis of the telescopic section 1. On the bracket 8 of the inclined section 7, a working body is rigidly fixed, in the form of a hydraulic hammer 9. The hydraulic hammer 9 is mounted on the bracket 8 using, for example, installation bolts 10. The working tool of the hydraulic hammer 9 is made in the form of a peak 11. The extension of section 1 of the telescopic boom is carried out by a hydraulic extension cylinder 12. The hydraulic cylinder movement 12 is mounted on an axis 13 located in the hinge support 14, mounted on the housing 2. The stem of the extension cylinder 12 is mounted on an axis 15 installed in the hinge support 16, located in the upper part of the curved bracket 17. The inclined section 7 is rotated by the tilt cylinder 18. The tilt cylinder 18 is mounted using pins 19 on two hinge supports 20, mounted in the upper part of the bent bracket 17. The rod of the tilt cylinder 18 is mounted on an axis 21 located in the hinge support 22 mounted on an inclined Section 7.

A device for punching the crust of an electrolyte works as follows.

The base machine on which the device is installed is placed parallel to the longitudinal side of the processed electrolyzer. The housing 2, containing a telescopic section 1, is rigidly fixed to the bracket 4, by means of the hydraulic cylinders of the self-propelled machine is installed in a horizontal position. The telescopic section 1, with the inclined section 7 pivotally mounted on it, containing the bracket 8, with the hydraulic hammer 9 rigidly fixed in it and equipped with a spike 11, is pulled out by means of the hydraulic cylinder 12 in the direction perpendicular to the base machine toward the electrolyzer. The extension of the telescopic section 1 is carried out to a position at which the peak 11 of the hydraulic hammer 9 is above the crust of the electrolyte. The inclined section 7, by means of the hydraulic cylinder 18, is lowered until the peaks 11 are in contact with the electrolyte crust. By turning on the hydraulic hammer 9 and pressing the peaks 11 on the crust of the electrolyte by lowering the inclined section 7 by the hydraulic cylinder 18, the crust of the electrolyte is destroyed.

The device can be used as an attachment mounted on a commercially available diesel loader.

Using the device, the following operations are performed:

destruction of the electrolyte crust along the longitudinal side of the electrolyser in the zone "gas collection bell-airborne cell lining of the cell", including in the region of the corner sections of the gas collection bell;

destruction of the crust of the electrolyte in the region of the mouthpiece and punch APG (elimination of "moles");

punching tap holes for pouring metal;

destruction of cakes;

trickling down;

destruction of the crust of the electrolyte in the sections of the gas collection bell through the hatch.

The device provides year-round, continuous, round-the-clock operation in the conditions of aluminum electrolysis, at ambient temperature from minus 40 ° С to plus 70 ° С, in conditions of constant magnetic field and dustiness of air.

The tests of the device confirmed the operability and reliability of the design. The technical solution is industrially applicable, since it is manufactured, tested, and is supposed to be used at RUSAL plants for punching the electrolyte crust during the technological processing of electrolyzers to produce aluminum.

Claims (5)

1. A device for punching the crust of an electrolyte containing a retractable section of a telescopic boom associated with a hydraulic extension cylinder and located in a housing configured to be mounted on a base machine, and a working body with a working tool and a tilt hydraulic cylinder, characterized in that it contains an inclined section, fixed on the sliding section with the possibility of rotation in a vertical plane relative to the longitudinal axis of the sliding section, and the working body is rigidly fixed on the inclined section. 2. The device according to p. 1, characterized in that the working body is made in the form of a hydraulic hammer and is mounted on an inclined section with bolts. 3. The device according to claim 1, characterized in that the inclined section is fixed on the axis of the hinged support of the retractable section. 4. The device according to p. 1, characterized in that the tilt cylinder is mounted on the hinge supports of the drawer section, and its rod is mounted on the hinge support of the tilt section. 5. The device according to p. 1, characterized in that the body of the telescopic boom is made with the possibility of fixing on the base machine through the bracket.

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