SU755828A1 - Gas-air valve for coke ovens - Google Patents

Description

The invention relates to the coking industry, in particular to the heating system of coke ovens.

A reversing valve is known, having two valve brackets mounted on the rods, flexible rods for their alternate raising and lowering, associated with a disk or rocker arm that is rotatably fixed on a horizontal shaft and connected to a driving fish wheel, which in turn is connected with kantovochny mechanism [1 ^.

Closest to the invention to the technical essence and the achieved result is an air-gas 15 valve for coke ovens, comprising a housing connected to the generator and equipped with nozzles for supplying air and discharging the combustion products, the cover for overlapping is indicated-. 20 nozzles, a shaft with a drive and cams mounted on the shaft [2].

A disadvantage of the known constructions is the unreliability in operation due to the violation of the valve sealing, which occurs as a result of the destruction of the rod seals moving reciprocating in the flue gas medium at high temperatures.

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as well as the destruction of seals in masonry.

The aim of the invention is to improve reliability.

This goal is achieved by the fact that the gas-air valve for coke ovens, comprising a housing connected to the regenerator and equipped with a nozzle for supplying air and removing combustion products, covers for overlapping said nozzles, a driven shaft and cams mounted on the shaft, is provided with an additional shaft fortified in the case, the cover of the nozzle for removal of combustion products is fixed on the specified shaft, the shafts interact with each other by means of the toothed sectors fixed on them and the covers are hinged on the levers, Mounts on shafts.

In addition, the shaft drive is hinged to the housing.

FIG. 1 shows a valve, a general view; in fig. 2 - section A — A in FIG. one; in fig. 3 is a view along arrow B in FIG. >: in FIG. 4 — section B — B in FIG. 2; cha figs. 5 - section G - G in FIG. 2

The valve includes a housing 1, inside of which there is a cover 2 for

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the overlap of the pipe 3, the outlet of the products of combustion, pivotally fixed on the lever 4.

On frame 1, a frame 5 with regulating sheets 6 is installed. A cover 7 adjoins to frame 5 to overlap an air supply nozzle 8 pivotally connected to the lever 9. The lever 4 is rigidly fixed to the drive shaft 10 located inside the housing 1 in the supports 11. The lever 9 through the cam 12 is connected to the drive shaft 13 installed in the supports 14. At the ends of the shafts 1.0 and 13 are placed the gear sectors 15 and 16, and the sector 15 is connected to the shaft 13 by means of the cam 17.

The second end of the drive shaft 13 is rigidly connected to the lever 18, which, in turn, is pivotally connected to the hydraulic cylinder 19, which is mounted with the possibility of swinging on the support 20 mounted on the valve body 1.

In the pipe 3 has a regulating valve 21. The valve body 1 is connected to the regenerator of the coke oven by means of a transition pipe 22.

In the initial position, the cover 7 of the nozzle 8 is adjacent to the frame 5, and the cover 2 is in its extreme upper position, opening the opening of the nozzle

3. When the hydraulic cylinder 19 is turned on (the hydraulic cylinder is turned on to carry out tilting in the desired mode), the lever 18 rotates the shaft 13. The shaft 13 rotates together with a rigidly fixed cam 17, into the groove 23 of which the protrusion 24 of the gear sector 15 freely rotating on the shaft 13 is inserted. turning the cam 17, the protrusion 24 of the sector 15 is able to turn, and due to the interaction with the toothed sector 16 rigidly mounted on the shaft 10, the latter, turning, · allows the lever 4 and the cover 2 to lower. Due to the groove 23 of the cam 17 wider protrusion 24 sector 15, the shaft 13 has the ability to rotate freely, although the cover 2 is already closed.

At this point, the protrusion 25 of the cam 12, rigidly seated on the shaft 13, by selecting a gap in the groove 26 of the hub of the lever 4, turns the latter and opens

cover 7 of the nozzle 8. At the same time, the grooves in the cams are dimensioned so that the cover 2 of the nozzle 3 is lifted to remove combustion products after the nozzle 8 is completely closed for supplying air with the cover 7.

By. after a certain time, according to the technological mode, the hydraulic cylinder 19 is turned on and the operation of the levers and the cover is carried out in the reverse order.

The regulation of the air supply to the regenerator of the coke oven is carried out by a set of sheets 6, and the regulation of the flow area of the nozzle for removal of combustion gases 3 into the coke oven burs is made by the damper 21.

The use of the reversing valve of the proposed design increases the reliability of the design, its durability, and also facilitates the control of the valve, simplifies its maintenance and prevents gas evolution.

Claims (2)

Claim 1. Gas-air valve for coke ovens, comprising a housing connected to a regenerator and equipped with nozzles for supplying air and discharging combustion products, covers for shutting off said nozzles, shaft with the drive and the cams mounted on the shaft, characterized in that, in order to increase reliability, it is equipped with an additional shaft fixed in the housing, the cover of the branch pipe for removal of combustion products is fixed on the specified shaft, the shafts interact with each other by means of gear sectors fixed on them and the covers are hinged on the levers fixed on the shafts. ’ 2. Air vent valve in π. 1, characterized in that the shaft drive is hingedly mounted on the housing.