SU885274A1 - Charging device of blast furnace - Google Patents

Description

(5) DOWNLOAD LOADING DEVICE

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The invention relates to ferrous metal me-1, tallurgy, and more specifically to equipment for loading charge materials into blast furnaces.

A known blast furnace charging device containing a receiving funnel, an intermediate tank connected to it, rotating inside by means of a drive and a funnel suspended from a vertical rod and a distribution chute with an adjustable tilt angle 1}.

However, the transportation of charge materials from the receiving hopper to the distribution chute and loading them into the furnace is performed from above by gravity, which requires a large height of the loading devices. The distribution chute, its movement drives are installed in the upper part of the dome of the furnace, through which the charge materials are also loaded. This leads to the fact that during the repair or dismantling of the rotating funnel

or chutes need to disconnect the bridges, which complicates the repair process. In addition, during emergency repairs, when replacing a switchgear, blast furnace gas emissions occur, which creates hazardous working conditions.

 The closest to the proposed technical essence is the boot device of a blast furnace,

10 installed on its dome and a device containing a bunker-gateway for receiving charge materials, a horizontal chamber that communicates the bunker lock with the working space of the furnace and

15 is a feeder for loading the furnace with the possibility of moving along its axis and with the possibility of angular movement in a horizontal plane, a receiving funnel located below the load end of the feeder and a positive chute made with the possibility of temporary and tilting angle by means of drives 2j. A disadvantage of this device is the high cost of its repair and low durability. The purpose of the invention is to improve the maintainability as well as improve the service conditions of the device. This goal is achieved by the fact that a loading device containing a bunker gateway, a horizontal chamber with a gate connecting the bunker lock with the working space of the furnace, a feeder for loading the furnace, a receiving funnel located below the discharge end of the feeder and a distribution chute with rotation and change drives angle of inclination, provided with an intermediate chamber installed on the furnace dome with a gas sealing valve placed under the dome, and the chamber volume ensures that the receiving funnel and the groove accommodate it ennymi.na bar. The drawing schematically shows a device for charging a blast furnace. The device consists of a receiving bunker 1 with a gas sealing valve 2, an accumulative bunker 3 with a charge gate and a gas sealing valve 5. The bunker 3 communicates with a horizontal chamber 6, named after the exit to the dome part of the furnace. At least 6 a charge feeder (e.g. a scraper conveyor) is installed with the possibility of moving in a horizontal direction. Chamber 6 has a gate 8 with which it can be separated from the working space of the furnace, as well as a cover 9 for installing or removing the feeder 7. For distributing the charge material across the furnace, there is a receiving funnel 10 with a distribution chute 11 ,. suspended in the dome of the furnace on a hollow vertical rod 12, through which traction 13 passes to change the angle of the slope of the grooves 11 by means of drive I. The possibility of rotation of the switchgear is provided by the drive 15. To ensure safe working conditions and increase the serviceability of the device on the support collar 16 is installed intermediate 17 with the possibility of cutting it off from the working space of the furnace by means of a valve 18 (the actuator displacing and locking the valve is not shown) Part 4 cover 19 At the point of entry into the intermediate chamber 17 of the vertical rod 12, a gland seal 20 is installed. For mounting and dismounting the distribution device, there is a bracket 2. The device works as follows: The charge material is conveyed to the receiving hopper 1 by a conveyor. The charge lock and valve 5 are closed. The material accumulates in the storage bin 3. After filling the hopper 3, the valve 5 is opened, then the charge valve h and the material is fed to the feeder tape 7. The feeder 7 material is fed a hopper 10, a rotary motion kotdroy obospechivaets actuator 15 through a vertical post 12. Then, the material from the hopper 10 enters into the distribution trough 11 and therefrom is dropped into the furnace. The change in the angle of inclination of the groove is carried out by means of a drive 13 connected to it by a drive k, When the switchgear device fails, the operation on. its disassembly and replacement is carried out as follows. The lifting hopper 10 with the groove 11 is removed from the furnace and into the intermediate chamber 17, which is cut off from the working space of the furnace by the valve 18. After that, the lid 20 is removed and the distributor is removed from the intermediate chamber and replaced with a new one. Installation operations are performed in reverse order. Due to the presence of a separate path for the supply of charge materials and the installed installation of a switchgear, more favorable conditions for servicing and repairing the loading equipment have been created. There was an opportunity to reduce the height of top stock superstructures and auxiliary equipment. Installing a rotating charge distributor allows you to more evenly distribute the material over the cross-section of the furnace top. The presence of an intermediate chamber on the furnace dome allows for faster dismantling and installation of parts of the switchgear to improve working conditions. Claims of a blast furnace loading device mounted on a dome, containing a bunker-gateway for receiving charge materials, a horizontal chamber with a gate, communicating-a bunker-gateway to the furnace working space, a feeder for loading furnace, a receiving funnel located below the discharge end of the feeder and distribution A chute with rotational drives and a change in the angle of inclination is characterized by the fact that, in order to increase the ability of the repair facility, the device is equipped with an intermediate chamber with gas heaters installed on the dome of the furnace A relative valve located inside the dome, the volume of the chamber providing for the receiving funnel and the chute suspended in it along the rod. Sources of information taken into consideration in the examination of t, USSR Copyright Certificate If 427097, cl. C 21 V 6/20, 1975. 2, German Application (f 2657211, cl. C 21 V 7/18, 1979.

Claims (1)

Claim A blast furnace loading device mounted on a dome containing a bunker-gateway for receiving charge materials, a horizontal chamber with a gate communicating with the bunker-gateway the working space of the furnace, a feeder for loading the furnace, a receiving funnel located below the discharge end of the feeder and a distribution chute with drives for rotation and change, the angle of inclination, characterized in that, in order to increase repair 885274 “capabilities, the device is equipped with an intermediate chamber installed on the furnace dome * with a gas sealing valve located inside the dome, and the chamber volume provides for the separation of the receiving funnel and trough suspended in it by the rod.