Radiant barrier
Technical field
The utility model relates to a kind of annealing furnace supplementary unit, especially a kind of radiant barrier of furnace bottom roll of cold rolled sheet vertical continuous annealing furnace.
Background technology
At present, produce distortion, coating shedding because of the radiant heat of raying pipe, between the every root bottom part furnace bottom roll top in the stove, top furnace bottom roll below, top two furnace bottom rolls radiant barrier is installed all in order to prevent the furnace bottom roll in the annealing furnace stove.The radiant barrier that uses is made up of channel-section steel, steel plate, lagging material at present.
Existing dividing plate is a rectangle frame posture member, two elongated slot steel tank mouths outwards constitute two long limits of dividing plate, two short channel-section steel notches are inwardly as two minor faces, it is middle that other has the middle rib channel-section steel of two weak points to be arranged on, form framework, short channel-section steel, middle rib channel-section steel are connected by the web of overlapping welding with the elongated slot steel, and lagging material such as refractory ceramic fibre blanket etc. is arranged on the hollow part of framework, all are welded with steel plate on the upper and lower flange plate of channel-section steel and are used to cover also fixing lagging material blanket of described hollow part.Because the each several part of member only relies on welding fixing, when the thermal radiation distortion is big, channel-section steel, steel plate sealing-off, may drop to immediately between furnace bottom roll and the band steel, lagging material also falls down thereupon coming off, the channel-section steel that falls down, steel plate, lagging material just will be stuck in and scratch the band steel between band steel and the furnace bottom roll, influence the roll surface of strip surface quality and furnace bottom roll.
The utility model content
In order to overcome the deficiency that promptly easily drops after the existing radiant barrier sealing-off, technical problem to be solved in the utility model provides and also is difficult for the radiant barrier that drops after a kind of sealing-off.
The technical scheme that its technical problem that solves the utility model adopts is: radiant barrier, comprise by two elongated slot steel as long limit, two frameworks that short channel-section steel is formed as minor face, lagging material is arranged on the hollow part of framework, framework is provided with upper strata steel plate and the lower floor's steel plate that covers described hollow part, article two, the notch of lacking channel-section steel is inside, the notch of elongated slot steel is also inside, and lower floor's steel plate embeds in the notch of two elongated slot steel.
The beneficial effects of the utility model are: lower floor's steel plate is embedded in the notch of the channel-section steel that constitutes framework, weld between steel plate and the framework, even the sealing-off of being heated, steel plate and lagging material also are difficult for falling down; In addition, at the notch suitable otch of the end of short channel-section steel and middle rib channel-section steel setting with the elongated slot steel, short channel-section steel and middle rib channel-section steel also are connected between the notch of elongated slot steel, avoid sealing-off to drop, and two elongated slot steel are fixed in the stove by open holes, it is more firm that thereby the whole anti-width of cloth is penetrated dividing plate, though the channel-section steel on the dividing plate, steel plate temperature distortion also not can and lagging material fall down together and be stuck in and scratch band steel and roll surface between band steel and the furnace bottom roll.
Description of drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the C-C sectional view of Fig. 1.
Fig. 4 is the front view that is provided with the middle rib channel-section steel of otch.
Be labeled as among the figure, elongated slot steel 1a, elongated slot steel 1b, short channel-section steel 2a, short channel-section steel 2b, middle rib channel-section steel 2c, middle rib channel-section steel 2d, lower floor's steel plate 3, lagging material 4, framework 10, hollow part 11, open holes 12, otch 21, upper strata steel plate 30, the B kerf width, the L-incision length.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, radiant barrier of the present utility model, comprise by two elongated slot steel 1a, 1b as long limit, two frameworks 10 that short channel- section steel 2a, 2b form as minor face, lagging material 4 is arranged on the hollow part 11 of framework, framework 10 is provided with upper strata steel plate 30 and the lower floor's steel plate 3 that covers described hollow part 11, article two, the notch of lacking channel- section steel 2a, 2b is inside, and the notch of elongated slot steel 1a, 1b is inside, and lower floor's steel plate 3 embeds in the notch of two elongated slot steel 1a, 1b.Lower floor's steel plate 3 and lagging material 4 just are difficult for dropping between furnace bottom roll, can not cause the scuffing of band steel or the damage of roll surface.
When the length of radiant barrier is longer, generally the middle rib channel-section steels can be set in the middle of framework 10.As depicted in figs. 1 and 2, be provided with two middle rib channel- section steel 2c and 2d, the notch of middle rib channel-section steel 2c towards with the notch of short channel-section steel 2b towards identical, the notch of middle rib channel-section steel 2c towards with the notch of short channel-section steel 2a towards identical.Like this, lower floor's steel plate 3 can also embed in the notch of a certain at least short channel-section steel 2a/2b or middle rib channel-section steel 2c/2d, more is difficult for dropping.
As shown in Figure 3 and Figure 4, the end of middle rib channel-section steel 2c is provided with otch 21, described otch 21 is suitable with the notch of elongated slot steel 1a, 1b, and the width that the length L of otch 21 equals elongated slot steel 1a deducts the web thickness of elongated slot steel 1a, and the width B of otch 21 equals the web thickness of elongated slot steel 1a.Like this, the end of middle rib channel-section steel 2c just can be connected in the notch of elongated slot steel 1a, 1b, prevents to drop because of sealing-off.
In like manner, the end of short channel- section steel 2a, 2b is provided with otch 21, and described otch 21 is suitable with the notch of elongated slot steel 1a, 1b.Like this, the end of short channel- section steel 2a, 2b also can be connected in the notch of elongated slot steel 1a, 1b, prevents because of sealing-off drops, and short like this channel-section steel also can exchange with the middle rib channel-section steel, convenient processing.Certainly, also can be the adaptive otch of notch that is provided with in the end of elongated slot steel 1a, 1b with short channel-section steel, the end of elongated slot steel 1a, 1b is snapped in the notch of short channel- section steel 2a, 2b, lagging material 4 is limited in the framework 10.
Two ends at elongated slot steel 1a, 1b are provided with open holes 12, and radiant barrier just can be fixed on the mount pad that is arranged on the stove wall by each open holes 12 easily.