RU1822416C - Device for displacing construction members in dusty environment - Google Patents

Abstract

Use: in blast furnace loading equipment. SUMMARY OF THE INVENTION: the device comprises a drive rod located between the drive assembly and the top protective armor, which is connected by a hinge and rod to a packing follower rigidly connected to a bellows filled with mulite-siliceous wool and in contact with a plate-like valve located movably relative to the drive rod. 2 ill.

Description

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The invention relates to blast furnace charging equipment. A device is known for moving structural elements in a dusty environment, for example, for moving protective adjustable elements of a blast furnace, comprising a drive rod located between the drive assembly enclosed in the casing and the protective armor of the top, a plate-like shutter located movably relative to the drive rod. To increase the reliability of the device, the side surfaces of the shutter near the through hole are tapered. The flap of a rectangular Lorma with two long sides of the rectangle fitted to a groove delighted by two fixed plates.

The disadvantages of this solution include:

1) the need for a tight fit of the outer surfaces of the valve to the inner surfaces of the plates,

2) due to the abrasive wear of the shutter or plates, dust can penetrate into the cavity formed by the plates, dust can accumulate there and then jam the shutter,

as well as dust penetration between the opening of the shutter and the boom.

In prior art solutions, they play the role of protective enclosures that are stationary or slightly movable relative to the seal or hole. This prevents them from being used to move structural members with a large angle of rotation.

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It should also be noted that in well-known bellows, the grommets are usually rigidly attached to the body and, if the bellows can still have a small angle of rotation, then the gimbal is stationary.

An object of the invention is to provide a more reliable device for moving structural members in a dusty environment. This goal is achieved in order to increase the reliability of operation, they are equipped with a grunts box with stuffing box packing and a bellows filled with siliceous wool, in contact with a plastic damper, the bellows and the packing box are rigidly interconnected, and the latter is pivotally connected to the protective armor of the head.

The known seals perform the functions of an mechanical seal only, and this one functions as a mechanical seal with respect to the sealing surface, at the same time has freedom of movement with respect to this surface without loss of tightness i.e. This seal is endowed with an additional function of a movable seal and a compensator, which meets the criterion of significant differences.

Figure 1 shows a device for moving structural members of movable plates in a dusty environment, general view; 2 is a view A of FIG. 1.

The device consists of a plate 1, a shutter 2, d / tang 3. The plate 1 is attached to the casing of the blast furnace 11, to which a guide is fastened with bolts 10. The damper 7. is made integral with the compensator 5 filled with mulite-siliceous wool 6. The second end of the compensator 5 is rigidly connected to the soil box 7 and the seal 8.

In order to keep the compensator from stretching during the reverse stroke of the rod 3, the packing follower is pivotally connected (for example with the aid of t 9) to the protective armor of the top.

The rod 3 by the roller 15 is pivotally connected to the plate 12, freely suspended on the casing of the blast furnace. The entire sealing assembly is enclosed in a casing 13. The device operates as follows: the rod 3 from the electromechanical drive with a system of levers (not shown) performs

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translational motion and deflects plate 12 to the desired angle. The articulation prevents jamming of the rod in the plate.

Since the translational movement of the rod 3 is carried out through a system of levers (cranks), the rod oscillates (deviates) by an angle that depends on the length of the lever (crank). To obtain a sufficiently large stroke, the crank length and deflection angle can be significant. It is known that compensators have limited rotation angles, therefore, rigid fastening of the compensator to the casing of the blast furnace will lead to breakage, gas breakthrough and stop. To avoid this, one end of the compensator is movable together with the rod 3 along the sealing hole in the plate 1. This is achieved by the movable shutter 2.

In this device, there is no need to tightly fit the shutter to two plates, it is preloaded by a compensator, and it is not possible to jam the shutter due to dust accumulation in the cavity between the plates.

In the event of a blow-out between the openings in the shutter and the boom, the penetration of dust into the cavity of the casing prevents the cavity of the compensator, which is filled with mulite-siliceous cotton wool and the packing in the ground box assembly.

Claims (1)

The claims A device for moving structural elements in a dusty environment, primarily for moving protective adjustable elements of a blast furnace, comprising a drive rod located between the drive assembly enclosed in the casing and the protective armor of the top, a plastic shutter located movably relative to the drive rod, characterized in that that, in order to increase reliability in operation, it is equipped with a packing follower with stuffing box packing and bellows filled with mulite-siliceous wool in contact with a plate-like damper, wherein the bellows and the packing follower are rigidly interconnected, and the latter is pivotally connected to the protective armor of the top.