SU1746137A1 - Gate device - Google Patents

Abstract

Use: for supplying hot gases (H). SUMMARY OF THE INVENTION During the supply, the gate (Ø) is lowered down and is in a zone isolated from the effects of hot G. If it is necessary to stop the supply of hot gases, Ø Ш is moved upwards by the drive 8 by cooling rollers 6 and 10 when the cable 7 is tensioned. Air is supplied to the pipe 11 to cool the sliding device. Reliability is enhanced by improved gas tightness and by extending out from bottom to top. The gas tightness is increased by the screen on the back side of the Sh. The blocks 3 fixed on the hollow tubes of the frame 1 with a gap make it possible to blow air through the gaps, i.e. create an air curtain to meet hot G. 4 ill.

Description

The invention relates primarily to furnaces and can be used in the coal, metallurgical, chemical, mining and other industries using furnaces.

E is known to be an eduction cooled gate including a gate body, air supply pipes and a fan. One end of the air vent is rigidly fixed to the top of the air intake manifold. The air exhaust pipes are installed coaxially in the air supply pipes, and the discharge fans are mounted in the manifold sockets. The damper is cooled by the air blown by the fans into the distribution manifold.

One of the main disadvantages of this gate is that when opening the sberber rises up and its lower part is washed by hot gases, and through

The upper slot for moving the gate enters gases from the furnace into the working room in the service area of the furnace. In addition, the gate does not provide for the exhaust of air from the gate outside its service area.

The closest in technical essence to the present invention is a gate for chimneys with high-temperature gases, which consists of refractory elements connected one with metal connections, which are made in the form of metal pipes, open at the top and serving to pass air or water through them in order to cool the gate. To move, threaded rods are attached to the gate with which the gate is raised up.

The well-known gate has inherent flaws in the gates, which, when opened, rise up In the closed and open

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The position of the lower part of the gate is constantly located in the heat-affected zone of gases, since their temperature is highest at the top, which leads to deformation, burning, melting of the refractory material, i.e. to reduce the service life of the gate and gas prososam. In addition, this gate does not have sufficient gas density in the areas adjacent the refractory elements. The aim of the invention is to increase reliability and durability in operation.

In a gate device containing a gate comprising a tubular frame with refractory ceramic blocks mounted on its vertical hollow tubes and connected by mechanical transmission to the traction body, the gate is further provided with a rectangular duct attached to the tube frame from below and a screen fixed along one of the walls of the duct and placed parallel to the plane of the tubular frame, the ceramic blocks are installed relative to each other with gaps, and the mechanical transmission is made in the form of oic wall duct rollers and covering their tether.

The use of a slide device assembled from refractory ceramic blocks connected to a metal screen and cooled by air increases the heat resistance of the gate, eliminates gas permeability and, therefore, overheating, i.e. its durability increases. In addition, the sliding device allows, when the dryer stops by its extension from the bottom, to stop access of hot gases and radiant heat from the furnace, which increases the safety of the operation of the drying unit.

Fig, 1 shows a sliding device, general view; figure 2 - section aa in figure 1 in fig.Z - section bb in figure 1; figure 4 is a section bb In figure 1,

The gateway device includes a gate containing a tubular frame 1, on vertical hollow pipes 2 of which refractory ceramic blocks 3 are fixed, installed one relative to the other with gaps. A rectangular duct 4 is attached to the tubular body 1 from below, and a screen 5 is fixed on one of the walls of the duct 4 placed parallel to the plane of the tubular frame connected by a mechanical gear made of rollers 6 and the cable 7 surrounding them and drive 8. The gate is moved in the guides 9 with the rollers 10, and the cooling air is supplied through the nozzle 11.

Shibernoe device works as follows.

During the supply of hot gases, the gate is lowered down and is in a zone isolated from the effects of hot gases. If necessary, stop the flow of hot water.

gas gate is pushed up by the actuator 8

using rollers 6 and 10 under tension

cable 7. Air is supplied to the 1V socket

for cooling the sliding device.

The use of the device compared to

known allows to increase reliability due to improved gas density and increase durability due to the extension of the gate from the bottom up.

Gas tightness of the sliding device

is provided by a screen on the back of the gate, and the refractory ceramic blocks protect against radiant heat overheating from the refractory masonry of the firebox walls. The refractories attached to the hollow tubes of the framework with a gap make it possible to blow air, i.e. create an air curtain to meet hot gases. The slide valve is cooled by air supplied to

the lower hollow part of the gate on the pipe. The movement of air through the gaps between the screen, the refractory blocks and the air outlet through the gaps in the direction of the furnace create a cooling curtain and protects

screen and frame overheating,

In the slide device, the heat-resistant design of the drive is not required, since the rollers and the traction body are outside the rinsing zone with hot gases.

Claims (1)

Invention Formula A gate device containing a gate including a tubular frame with refractory ceramic blocks fixed on its vertical hollow tubes and connected with a mechanical transmission with a traction body, characterized in that, in order to increase reliability and durability in operation, the gate is further provided with a rectangular duct, attached to the tubular frame from below, and a screen fixed along one of the walls of the duct and placed parallel to the plane of the tubular skeleton, the ceramic blocks are mounted each other the other with gaps, and the mechanical transmission is made in the form of rollers fixed on the side wall of the box and the cable covering them. figure 1 A a Fig2 J / 1) ,, 1 J / 1- -J / U-J / 1 A L A A / h №.4 Editor I. Shulla Tehred M. Morgenthal Order 2383 Circulation: Subscription VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, 4/5 Raushsk nab. Production and Publishing Combine Patent, Uzhgorod, Gagarin st., 101 .l .... l. about TffjiAfl -J / 1 h Proofreader M.Keretsman