SU962731A1 - Apparatus for spraying concrete - Google Patents

Description

The invention relates to coke production, in particular to ancillary equipment used for hot repair of coke oven masonry and can be used in other industries to repair masonry of heating furnaces, wells, etc. thermal units. Due to the warm and mechanical impact, the refractory masonry of coke ovens and other heat units is destroyed over time. In particular, coke ovens form vertical requirements on the head verticals over the entire height of the chamber, destruction of the head bricks in the form of rocks and cracks, furnace wear. the formation of sinks on the walls of chambers in the zones of maximum temperatures. Most often there are sinks on the walls of the masonry on the coke side of the furnaces. The area of shells reaches 2.5 m and a depth of up to 7 mm. The destruction of the coke oven masonry leads to the premature decommissioning of furnaces, reduced battery performance, and increased material and labor costs for the repair and restoration of furnaces. To maintain the coking chambers in working condition and prevent premature release from coke plants, they are repaired by lubrication and gunning. It is known to apply gunning mass to the damaged area with a layer of 3 mm at a time, after which time is given for hardening and the cycles of applying subsequent layers are repeated at certain intervals until the shell is completely filled with the gunning mass. The shotcrete of the shell lasts up to 2-3 hours, depending on its size.

q location. This work is done under the conditions of high temperature, gas and dust, with increased danger.

From the practice of coke-chemical plants, it is known to use various tools and simple tools for gunning coke oven walls: gun gun, which is applied gun gun mass through a special spray nozzle; a paddle to smooth down and remove excess layering of the sprayed mass; a gunning device to which air is connected from an air duct located along the serving platform.

In order to protect workers from exposure to high temperatures, a sheet metal screen is used, covering the chamber to the lower frame hooks or cloth suits and face protectors.

When repairing masonry, the gunning mass is supplied to the working tool (gunning gun) through flexible hoses from cement gun, gunning apparatus or through pipes from a fixed installation .1 j.

However, in all cases during gunning, the worker holds the gunning gun in his hands and directs his nozzle to the gunned section of the masonry, located directly at the open coke oven. This work is not only difficult, but also dangerous.

The closest in technical essence to the present invention is a device for the gunning of chambers of coke ovens, containing an electric carriage moving along the front of the coke ovens. The gun is mounted on the gun, and pneumatic lift. The lift rod is provided with a cross member with brackets, on which a gunning gun is mounted during gunning.

Gun shotgun can be lifted, for example, along a vertical crack in the coke oven masonry, with a foot pressing the air lift pedal. The lift rod with the gun is lowered under its own weight when the L 2J is removed from the foot pedal.

A significant drawback of the design lies in the fact that the worker repairing the masonry must keep the gunning gun with his hands all the time and carry out all manipulations with it using the transverse traverse.

pneumatic lift, as an intermediate support. This device facilitates, but does not eliminate, manual labor during hot repair of the coke oven masonry.

The purpose of the invention is to improve working conditions, increase productivity and quality of shotcrete. The goal is achieved by

0 that the device for gunning the walls of the coke oven chambers, containing a carriage and a bar with a working tool, is equipped with a carriage mounted for reciprocating and turning and rotating in a vertical plane, and a copier, and the working tool is made in the form of pipes with nozzles and ironers, at the same time the bar and the copier are fixed on the trolley,

0 and the bar is fixed pivotally.

In addition, it is advisable to perform tillers spring-loaded and mounted on the statag on the side of each shotcrete wall using

S lever-hinge chetyrehpvennikov, equipped with a spring-loaded thrust that interacts with the rod and cam.

FIG. 1 shows the device, a general view; in fig. 2 - the same, the type of co0 xy not fig. 3 is a section AA in FIG. 2; in fig. - section. B-B in FIG. 2

The device for gunning includes a driving carriage 1, on which a metal structure 2 is fastened, which serves to install and fasten

all device nodes. Moving the trolley along the service platform along the furnace front is driven by the movement 3 mounted on the trolley 1. In the metalwork 2 guides, a carriage 5 is installed to mount the boom 6 on it, drive the boom 7 and drive8 to raise and lower the boom. The carriage 5 is a welded structure with four rollers 9 moving in guides by means of rack gear consisting of sprockets 10 placed on the shaft 11 of the carriage 5 and the rails 12,

Claims (2)

 fixed on the metalwork 2. The rod 6 with the gun-type head 13 is installed by means of the hinge 1 on the shaft 11 of the movable carriage 5 and is connected to a lifting-lowering drive 5 of the SRI of the rod 8 for mounting the gun-head of the rod in height. Two tubes 15s are installed in the boom 6 and end with the nozzles 16 through which the gunning mass is fed from the gunning apparatus 17 located on the trolley 1. On the gunning head 13, flies 19 are mounted on the gunning head 14 to smooth down the gunning mass and removal of sprays and stains. Lever-hinge chetyrehtzchenk 18 is equipped with a lever-hinge mechanism, including a spring-loaded th 20 and pivotally for the double-arm lever 21 attached to the rod, interacting with the cam 22. fixed on the drive tempered 1. The movement p-drive provides for the installation of the shotrolled golorka and its reciprocating movement along the shotcrete surface. A device for gunning st of coke oven chambers works as follows. In order to carry out the work on the shotcrete, after issuing the coke oven ipora, the device is mounted with the help of a drive 3 on the open furnace so that the rod 6 enters the furnace. Then, the driven neither 7 rod 6 is introduced into the furnace at this depth. At the same time, the two shoulders. The lever 21 runs over the copier 22 and a protrusion in the middle part interacts with the spring-loaded four-arm 18, which pushes the trowel 19 and the bar freely into the furnace chamber. Upon further movement of the rod 6, the two shoulders lever 21 comes off the copier and the trowel is divorced, resting against the walls of the furnace chamber being processed. After the boom is installed at a certain depth, the drive 8 is lifted for lowering and with the aid of a screw-screw gear a gun-gun 13 of the rod 6 is set to its initial position in the shell area to be gunned. The shot gun 13 is fed through pipes 15 torr ret-mass from the gun G /, set to 1, and the movement of the rod 7 is set to reciprocate with a stroke corresponding to the size of the shell. When the rod 6 of the shotcrete / mass is moved through the nozzles 16, it is applied to the sink, while the gunning area 19 is smoothed down. The number of layers applied by the sprayed mass depends on the depth of the shell. Installing two nozzles 16 on both sides of the boom, allows you to gun the right or left side of the chamber wall. The gunning and movement process is controlled from a special device site. The use of the device for gunning in production will eliminate heavy manual labor in high temperatures, gas and dust. Claim 1. Device for gunning coke oven chamber walls, containing a carriage and a bar with a working tool, characterized in that, in order to improve working conditions, increase productivity and gunning quality, it is equipped with a carriage installed with the possibility of reciprocating motion and turning in the vertical plane, and with a copier, and the working tool is made in the form of pipes with nozzles and smoothing irons, while the bar and copier are mounted on the trolley, and the bar is fixed pivotally. 2. The device according to any one of claims, 1, and 2 tons, and that the floaters are made spring-loaded and mounted on the rod on the side of each shotcrete wall with the help of lever-hinge four-rods. 3. The device according to p. 1 and 2, that is, with the fact that the lever-hinged four-element is equipped with an interaction with a rod and a copier with a spring-loaded thrust. Sources of inoculation (; law taken into account in the examination of 1.I.Lgalov, KI, et al. Repair of masonry and coke-oven reinforcement equipment. M., Metallurgi, 1966, pp. 82-96. 2. USSR author's certificate number 33526k, cl. C 10 V 33/1, 1968 (prototype). 6-6