JPS6243273Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a smoke collection hood with good smoke collection efficiency for collecting smoke generated during tapping of hot water from an electric furnace.

Generally, hot water is discharged from an electric furnace as shown in FIG. 1, an example of which is shown in FIG. That is, the electric furnace 1 is tilted and hot water is transferred to the ladle 2 located below the electric furnace, and the smoke generated at this time is collected by the smoke collection hood 4. The ladle is placed on the trolley 3,
The smoke collection hood also has wheels, allowing it to be moved back and forth. At the beginning of tapping, the outflow angle of the hot water is close to horizontal, and the taper opening 1'
Since the height difference between the ladle and the ladle is large, the horizontal distance between the electric furnace and the ladle (and smoke collection hood) is large, as shown in Figure 1, but as the hot water progresses, the electric furnace is tilted more and more as shown in Figure 2. At the same time, move the ladle and smoke collection hood close to the electric furnace. In order to approach the electric furnace, the central front part of the smoke collection hood is largely cut out, as shown in the plan view in FIG. Therefore, from the early to middle stages of tapping, a considerable proportion of smoke dust escapes from the notch, as shown by the arrow in Figure 1.

This idea was created in view of the above, and is the first time for a hot spring to be opened.
The gist of the hood, which can efficiently collect smoke even in the medium term, is that the ladle is placed in the pit for the hot water receiving ladle, and when hot water is tapped from the tilting electric furnace, it rides on the rails laid on both sides of the pit. This is a box-type smoke collection hood with an open bottom surface for collecting smoke by covering the space above the ladle and tap water gutter, spanning the pit and ladle, and a main duct is provided at the rear end of the main hood 4. , and cut out part of the center of the front and top surfaces,
A space is provided for the entry of the tap water gutter, and the upper part of the notch space can be covered as necessary.
A movable auxiliary hood with wheels that is overhanging and has a U-shaped cross section facing downward in the front-rear direction is provided at the center of the upper surface of the main hood, and an auxiliary duct that partially overlaps and communicates with the rear part of the movable auxiliary hood is provided. established,
This is a hot water outlet smoke collection hood for an electric furnace, characterized in that the auxiliary duct is communicated with the main duct.

Next, the present invention will be explained based on the drawings of an example of implementation. FIG. 4 is a plan view of one embodiment of the present invention, FIG. 5 is a side sectional view taken along the line AA in FIG. 4, and FIG. 6 is a front view. In the figure, 4 is the main hood whose front upper edge has been cut off as shown. Reference numeral 5 denotes a main duct provided behind the main hood, which is separated from the hood by a partition plate 6, and sucks smoke and dust through two openings 6' provided in the partition plate 6. The main hood and main duct have two H
It is supported in a gate shape by steel molds 7 and columns 8, and the entire structure is movable by wheels 9. An auxiliary duct 10 is attached on top of the main hood, and an auxiliary hood 11 is further placed. The auxiliary hood overlaps the auxiliary duct but does not come into contact with the auxiliary duct, and is equipped with wheels so that it can move forward and backward. Forward and backward movement, a motor may be mounted on the back and the wheels may be driven by a chain or belt, or a motor-driven winch and wire may be used.
The auxiliary hood is above the cutout part of the main hood.
Set its width, length, and wheel position so that it covers most of the notch and can overhang.

The present invention is constructed as described above, so that the auxiliary hood is fully advanced during the initial stage of tapping, and then gradually retracted as it approaches the electric furnace. We were able to collect smoke efficiently throughout the entire period, greatly contributing to improving the working environment.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the early stage of electric furnace tapping, Fig. 2 is an explanatory diagram of the final stage, Fig. 3 is a plan view of Fig. 2, Fig. 4 is a plan view of the smoke collection hood of the present invention, and Fig. 5 The figure is a side sectional view taken along the line A-A in FIG. 4, and FIG. 6 is a front view. 4: Main hood, 5: Main duct, 10: Auxiliary duct, 11: Auxiliary hood.

Claims (1)

[Scope of utility model registration request] When pouring hot water from a tilting electric furnace into a ladle placed in a pit for receiving ladle, step on the rails laid on both sides of the pit, straddle the pit and ladle, and place the hot water above the ladle and tap gutter. This is a box-type smoke collection hood with an open bottom to cover a space and collect smoke.A main duct is provided at the rear end of the main hood 4, and a part of the center of the front and top surfaces is cut out to form a hot water tap. In addition, in order to cover the upper part of the notch space as necessary, a U-shaped wheel with a cross section facing downward in the front and back direction is provided at the center of the upper surface of the main hood by overhanging it so that the upper part of the notch space can be covered as necessary. A hot water outlet smoke collection hood for an electric furnace, characterized in that a movable auxiliary hood is provided, an auxiliary duct is provided that partially overlaps and communicates with the rear part of the movable auxiliary hood, and the auxiliary duct is communicated with a main duct.