SU419044A3 - - Google Patents

Description

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The invention relates to the field of black metal, in particular, to devices for rearranging the system of protective plates for blast furnaces of blast furnaces or shaft furnaces.

A device is known for rearranging the blast furnace top plate protection system, consisting of separate segments installed in the ceramics position and arranged in two rows with mutual overlap on the side edges and connected to the actuator actuator operating through the control unit. In this case, the segments are rearranged either individually or all together.

The disadvantage of such a device is the impossibility of permuting segments made with a constant radius in a wide range.

In order to control the distribution of the charge over the cross section of the furnace, the drives of the outer and inner rows of segments in the proposed device are connected to different control circuits with control units interconnected via a time relay. In addition, for the simultaneous rearrangement of all segments of the outer row with a time delay relative to the segments of the inner row

Each second row of connectors is connected to one or several non-installation drives via the corresponding rings.

FIG. 1 shows the described device; in fig. 2 is a section along A-A in FIG. one; in fig. 3 — version; in fig. 4 is a circuit for switching on a permutation mechanism.

Movable protective plates are installed in the upper part of the blast furnace. Here

the direction of movement of materials coming from the funnel 1 of the inlet apparatus changes with the lower cone 2 lowered. Depending on the radius and inclination of the protective plates in the blast furnace, a certain

profile zasypn. The shield system consists of an inner and outer row of impact resistant segments 3 that overlap at their side edges. Segments 3 are made with a constant radius, which

At some average, the nanoden segment corresponds to the radius of the furnace. Segments 3 of the outer and inner rows are hung in the upper part of the peps casing 4 on the rods 5 of the tandem type and on the side facing

the wall 6 is provided with holders 7. The holders 7 are connected by the hooks 8, which are hinged with the external end with the arm 9 of the cranked lever; With the other arm 10 of this lever is connected a piston rod And a hydraulic cylinder 12, I have, its unore on the outer wall of the furnace. Cylinder 12 is actuated via control unit 13. Through system "rod 11 - levers 9-10 - rod 5, rearrangement of segments 3 is made and, due to their free rim suspension - change of inclination and distance from the middle of the furnace. The control units 13 of the hydraulic cylinders 12 of the inner segments 3 are electrically connected with a certain time delay relative to the control units 13 of the outer segments 3. A variant of this inclusion is illustrated in FIG. 4. The hydraulic cylinders 12 (of which only three are shown for the sake of clarity) are connected in parallel and in this case are connected to an adjusting circuit 14 containing a hydraulic drive. The device works in the following way. When the block 13 receives a control pulse, the working fluid is supplied to the hydraulic cylinders 12 through the pump 15, as a result of which the rods 11 and thus the segments 3 are moved. The control units 13 of the inner and outer rows of segments 3 are connected to each other via a time relay 16. Thanks the time delay of the relay when moving inwards first loads the hydraulic cylinders 12 of the inner row of segments, and then, after some initial stroke, the cylinders 12 of the outer row of segments 3 are loaded. pressure valves. In order to prevent the segments of the inner row from being thawed into the right (dashed) position, cylinders 12 are loaded from the control panel through the blocks 13. As a result, the segments 3 are transferred to the predetermined position. Segments 3 of the outer row receiving the time lag are moved to segments of the inner row. Thus, segments 3 come as close as possible and thus the danger of jamming of protective materials or materials is eliminated. Another possibility of joint rearrangement of segments of one or another row is that the rings 17 on the brackets 18 fixed on the outside of the furnace are rotated from one or several hydraulic actuators 19 connected to the external wall of the furnace (not shown in the drawings). To each ring 17, through mechanism 20, all ti gi 8 of the corresponding row of segments are attached. When the rings 17 are rotated, the segments 3 of the inner row simultaneously move with a time delay relative to the segments of the outer row. Due to the design of the device, it is possible to relocate the sewn plngs by a large amount without difficulty, with the slope of the segments being 45 ° or more. The subject of the invention 1. A device for not restoring the system of protective stoves of the furnace throat, containing segments installed in an erect position in two rows with the overlapping of their side edges and connected by means of a permutation actuator connected to a control unit characterized by that, in order to regulate the distribution of the charge over the cross section of the furnace, the drives of the outer and inner rows of segments are connected to independent control units interconnected via a time relay. 2. The device according to claim 1, from L-45 is also so that, in order to simultaneously swap all segments of the outer row with a time delay relative to the segments of the inner row, the inner and outer row of the segments are connected to one or more drives through the corresponding rings.

FIG. 2

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