JPH068991Y2 - Cooling device for blast furnace raw material charging device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a cooling device for a raw material charging device used in a bellless blast furnace.

[Conventional technology]

In a raw material charging device of a bellless type blast furnace, a cooling device applied to a charging device is, for example, Japanese Patent Laid-Open No. 59-116305.
There is a technique disclosed in Japanese Patent Laid-Open No. 59-116306.

[Problems to be solved by the device]

By the way, all of the cooling devices disclosed in the above publications use the gravity of a fluid to cool by a natural flow, and therefore, the range in which cooling is possible is limited, so that the necessary parts of the charging device are sufficiently cooled. Since it is not a structure that can be used, and the water receiving of the fluid and the gutter of the drainage are forced to have an open structure, there is a problem that dust in the furnace is accumulated in the pipe.

The present invention has been made in view of the above problems, and provides a cooling device having an improved cooling efficiency as a closed pipe structure.

[Means for Solving the Problems]

According to the present invention, a vertical chute for charging raw materials provided in the core part of a bellless blast furnace is vertically provided with a water supply / drainage pipe, a rotary joint connected to an external pipe is provided on the top of the water supply / drainage pipe, and a lower end is charged. A cooling device for a blast furnace raw material charging device, characterized in that it is connected to a cooling load of the device.

[Action]

The present invention is a device applied to a raw material charging device in which the chute is a side feed, in which the water supply / drainage pipe is vertically passed through the vertical chute of the core part that is the swivel axis, and the rotary joint installed on the top is outside the reactor. It is joined via the above to guide cooling water into the furnace to forcibly cool the charging device. Since this cooling system has a closed pipe structure, it is not limited to the head difference of the cooling load and the water supply pressure can be appropriately selected, so that the cooling efficiency is improved.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side sectional view showing the structure of a cooling device attached to a raw material charging device of a bellless blast furnace. The raw material charging device is provided with a vertical chute 1 provided so as to be rotatable in the core part, and a charging chute 2 protruding from the lower end part thereof in the radial direction is attached. Further, a lower chute 3 is attached to the tip portion thereof, and the lower chute 3 is tiltable in the radial direction of the furnace. Thus, in combination with the turning of the vertical chute 1, the lower chute 3 is charged with the raw material at an arbitrary position in the furnace. Reference numeral 4 denotes a swivel disc, which swivels together with the chute structure.

The cooling device is provided with a water supply / drainage pipe 5 which extends vertically through the vertical chute 1, and a rotary joy 6 is attached to the top thereof to connect with a pipe outside the furnace. The inside of the furnace at the lower end is, for example, the swirl disk 4
It is connected to the cooling pipe 7 arranged on the back surface of the above to cool it.

FIG. 2 is a drawing showing an example of a cross section of the water supply / drainage pipe 5,
This constitutes a multiple pipe, and the drain pipe 10a, the water supply pipe 10b, the N ₂ gas supply pipe 10c, and the power cable pipe 10 are externally provided.
d, the communication cable tube 10e may be formed.

Although the present embodiment has been described with respect to the structure for supporting the rotating disk, the present invention can be applied to a device such as a rotating drive mechanism using a rotating donkey.

[Effect of device]

As described above, according to the cooling device of the present invention, since the water supply / drainage pipe is vertically passed through the vertical chute of the core part and is connected to the inside of the reactor through the rotary joint to form the cooling system as a closed pipe structure, the cooling load It is not limited to the form or head difference, and the water supply pressure can be appropriately selected, so that even the details of the cooled object can be forcibly cooled, the cooling effect is improved, and the sealed structure prevents dust and the like. Accumulation can be prevented, and labor for facility maintenance can be saved.

[Brief description of drawings]

FIG. 1 is a side sectional view showing the structure of a cooling device attached to a raw material charging device, and FIG. 2 is a drawing showing an example of a cross section of a water supply / drainage pipe. DESCRIPTION OF SYMBOLS 1 ... Vertical chute, 2 ... Charging chute, 3 ... Lower chute, 4 ... Swivel disk, 5 ... Water supply / drainage pipe, 6 ... Rotary joint, 7 ... Cooling pipe.

Claims (1)

[Scope of utility model registration request] 1. A water supply / drainage pipe is provided vertically through a vertical chute for charging raw materials provided in the core of a bellless blast furnace, and a rotary joint for connecting to an external pipe is provided at the top of the water supply / drainage pipe, and the lower end is A cooling device for a blast furnace raw material charging device, which is connected to a cooling load of the charging device.