JPH037376Y2 - - Google Patents

Description

[Detailed description of the invention] "Field of industrial application" This invention relates to a furnace bottom cleaner for a coke oven.

``Prior art'' When coke is pushed out by an extruder in a coke oven, coke remains or carbon adheres to the bottom of the furnace opening on the extrusion side and coke guide side, causing problems in attaching the furnace lid. .

Conventionally, the scraper for removing this has a constant width, so the corners of the bottom of the kiln mouth cannot be sufficiently treated. That is, at the furnace mouth, the furnace wall is tapered and the furnace width is widened. In some cases, a special scraper is installed separately to cope with this expansion of furnace width (Japanese Patent Application Laid-open No. 56-90886), but the structure is complicated, making maintenance difficult, not allowing stable cleaning over a long period of time, and increasing costs. It was hot. Therefore, when the scraper is brought into contact with the hearth bottom and the scraper is pulled toward the furnace mouth, the springs are extended due to frictional resistance with the hearth bottom, opening the scraper in the left and right directions and bringing the tip of the scraper into contact with the furnace wall. A device was devised (Japanese Patent Application Laid-Open No. 50-22804). However, the frictional resistance between the lower edge of the scraper and the furnace bottom fluctuates, and the degree of opening of the scraper in the left-right direction changes accordingly, resulting in the problem that reliable contact with the furnace wall cannot be obtained. Ta.

``Problem to be solved by the invention'' The present invention is to press two extremely simple rectangular scrapers at once against the bottom of the hearth, as well as the lower part of the furnace wall connected to both the left and right sides of the hearth. The purpose is to simultaneously and reliably clean the furnace walls at the corners where the width increases toward the kiln mouth on both sides.

"Means for Solving the Problems" In order to achieve the above object, the present invention includes a coke oven 1 having one downward pressing device 4 which can be raised and lowered at the front end of the elevator frame 3 of the sheet cleaner 2. Left and right opening/closing arms 5, 5 are pivotally supported at the lower ends of the arms 5, 5 by front-back common pins 13, and metal fittings 15, 15 are suspended from the lower ends of the arms 5, 5 by front-back pins 14, 14, respectively. A kiln mouth hearth bottom cleaner is provided with scrapers 6, 6 that can be expanded and contracted in the left and right directions, and the bottom edges of the scrapers 6, 6 are pressed against the furnace bottom, and both left and right edges are pressed against the furnace wall. Ru.

``Function'' Therefore, the furnace lid is removed by the furnace lid removal machine and the furnace opening 1' is removed.
When the seat cleaner 2 opens, the seat cleaner 2 moves forward to the position shown by the imaginary line in FIG. 3, and the elevator frame 3 moves up and down to clean the seat surface 9. After cleaning is completed, when the elevator frame 3 is lowered slightly, the downward pressing device 4 is lowered from the level position shown in FIG. 1 to the position shown in FIG. 4. As a result of this descent, the bottom edges of the scrapers 6, 6 come into contact with the bottom surface of the kiln mouth 1', and at the same time, the lower ends of the opening/closing arms 5, 5 open, so the scrapers 6, 6 slide and expand in the left-right direction. Its side edges are in contact with the furnace wall 7 of the kiln mouth 1', and this state is maintained by the force of the springs 10. In this state, when the sheet cleaner 2 moves to the right in FIG.
The remaining coke and adhering carbon are scraped off. At the enlarged portions (corner portions) of the furnace walls 7, 7, the opening/closing arms 5, 5 are opened and closed by the downward pressing force of the spring 10.
is about to open, and both edges of the scrapers 6, 6 expand along the taper of the furnace walls 7, 7 due to the force of the spring 10 and come into close contact with the enlarged furnace walls 7, 7.

Embodiment As shown in FIG. 2, the oven mouth 1' of the coke oven 1 is tapered to the oven walls 7, 7, and expands outward. When the scraper 8 of the sheet cleaner 2 comes into contact with the sheet surface 9, the tip of the elevator frame 3 of the cleaner 2 enters the furnace and moves up and down with the elevator frame 3, as shown in FIGS. 2 and 3. It is. As shown in FIG. 4, the downward pressing device 4 includes a cylinder 11 supported downward by the force of the spring 10 and a downward arm 12 provided thereon, and can be raised and lowered by the force of the spring 10 or against the force thereof. is maintained. At the lower end of this downward arm 12 are left and right opening/closing arms 5, 5.
A rectangular hearth bottom and furnace wall scraper 6 are provided on metal fittings 15, 15, which are pivoted in the middle by a common pin 13 in the front and back directions, and are suspended from the lower ends of both arms 5, 5 by a pin 14 in the front and back direction. scraper 6,6
is held so as to be expandable and contractable in the lateral direction by inserting pins 17, 17 into longitudinal holes 16 bored in one or both of them. For the downward pressing force in the downward pressing device 4, compressed air or other heat-resistant pressing means may be used instead of the spring 10. In the figure, reference numeral 18 indicates an upper end fixing pin of the cylinder 11, reference numeral 19 indicates a stopper for the opening/closing arms 5, and reference numeral 20 indicates an elevation guide spindle.

"Effect of the invention" Since the present invention has the above-mentioned structure, it is possible to lower the scrapers 6 and 6 and press them on both sides with a single spring 10, and the bottom and corners of the furnace wall can be reliably scraped. Moreover, it can accommodate the taper of the furnace wall 7. Also, the position where the scrapers 6, 6 do not touch the furnace bottom (positions other than the lower limit when the sheet cleaner is installed or during sheet cleaning, the first
In Figure 1, the scrapers 6 and 6 are contracted in the horizontal direction in Figure 1, so they do not come into contact with the furnace wall when entering the furnace or during cleaning, so there is no risk of damaging the furnace wall. 6 is 1
On the other hand, since only one spring 10 is required, the structure is extremely simple and concise, which is advantageous for maintenance, and has the practical benefit of being lightweight and inexpensive.

[Brief explanation of drawings]

FIG. 1 is a front view showing the furnace bottom cleaner of the present invention, FIG. 2 is a plan view of the cleaner, FIG. 3 is a side view of the cleaner, and FIG. 4 is a front view of the cleaner in operation. 1...Coke oven, 2...Sheet cleaner,
3... Elevator frame, 4... Downward pressing device, 5... Opening/closing arm, 6... Furnace bottom and furnace wall scraper.

Claims (1)

[Scope of utility model registration request] In the coke oven 1, a single downward pressing device 4 is provided at the front end of the elevator frame 3 of the sheet cleaner 2, which can be raised and lowered. . A kiln mouth hearth bottom cleaner formed so that the bottom edge of No. 6 is pressed against the furnace bottom, and both left and right edges are pressed against the furnace wall.