JPS5943430B2 - Baked ingot cooling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a baked ingot cooling device, and more particularly to a baked ingot cooling device having a grate that significantly extends the life of the grate plate used in the device.

BACKGROUND ART There is a clinker cooling device that uses air to cool a high-temperature clinker fired in a cement manufacturing process to a predetermined temperature while transporting the clinker a certain distance.

FIG. 1 shows this ingot cooling device.

In the figure, high-temperature clinker burned by a burner 2 falls from a rotary kiln 1 into a cooling device main body 3.

Inside the device main body 3, there are multiple great plates (hereinafter simply "
It is called a plate.

(approximately 300 beads in width and approximately 450 mm in length) are arranged in multiple stages in parallel in a direction perpendicular to the clinker transport direction.

Stages of movable grate plates (movable plates) 5a and stages of fixed grate plates (fixed plates) 5b are arranged alternately, and the clinker is gradually moved to the discharge end by the operation of the movable plates 5a operated by the drive device 6. During this time, the clinker is cooled to a predetermined temperature by cooling air supplied from the air chamber 7 below the grate.

In the above apparatus, the rotary kiln 1 itself has a classifying effect on the high-temperature clinker discharged from the rotary kiln 1 at a temperature of about 1400 to 1500°C, so the baked ingots that fall onto the grate are classified and exhibit uneven particle size distribution. , small-diameter clinkers will be concentrated on both sides of the sintered ingot transfer direction on the grate, that is, on the side walls.

For this reason, large-diameter particles form a thick mountain-shaped layer in the center of the grate, and small-diameter particles are concentrated on both sides.The layer formed by these small-diameter particles has a large ventilation resistance, so the baked ingot is cooled. If the water is insufficient, it will move rapidly and be discharged.

For these reasons, it is necessary to take special measures on the side of the cooling device where small diameter particles are concentrated.
In the figure, plates located on both sides of the grate with respect to the clinker movement direction X (indicated by diagonal lines W in the figure).

) is a blind plate with no ventilation holes, and an air-impermeable plate 5c is positioned to bridge between the fixed plates.

Clinker is deposited on these plates (hatched area W) to prevent burnout and wear of the plates due to movement of the high temperature small diameter particle layer.

3 and 4 show the structure of the plate group in the portion indicated by the symbol W. FIG.

Reference numerals 5b' and 5f in the figure are fixed plates, and the clinker mounting surfaces of these fixed plates 5b' and 5t are blind plates with no air passage holes formed therein.

Normally, in a grate section with ventilation holes, a movable plate is placed between the fixed plates 5b' and 5b'', but in this case, an impermeable plate without ventilation holes is placed between the fixed plates 5b' and 5f. ) 5c is fixed to form a deposit of small diameter particles.

(Fixed plates 5b' and 5b'' with plate 5c as a blind plate)
In order to distinguish it from the above, it is hereinafter referred to as an impermeable plate.

A movable plate 5a is disposed on the side of the non-ventilated plate 5c, but small-diameter particles tend to collect and flow in the opposing portion between the non-porous plate 5c and the movable plate 5a. In order to prevent small-diameter particles from falling, an eaves S is formed on the impermeable plate 5c to cover a part of the movable plate 5a.

By forming the eaves part S in this way, the falling of small diameter particles can be greatly reduced, but on the other hand, the small diameter particles 10 enter the gap 8 formed between the eaves part S and the movable plate 5a (the fourth (see figure).

For this reason, the eave portion S is constantly rubbed violently by the small-diameter clinker particles at high temperature, and is worn out and burnt out in a short period of time.

Figures 5 and 6 show conventional air-impermeable plates.

As shown in the diagram, in the conventional type, the eave part S and the plate body are integrally molded, so even if only the eave part S wears out, the entire non-ventilation plate, which is integrated with the eave part S, has to be replaced. .

Since the plate is originally made of an expensive heat-resistant metal such as 25Cr12Ni, it is very uneconomical to replace the plate itself even if a part of the plate is damaged in a short period of time.

In addition, the eaves S requires not only heat resistance but also strong abrasion resistance, so the metals that can be used are further limited. It will make things worse.

The purpose of the present invention is to eliminate the above-mentioned problems, eliminate the uneconomical need to replace the entire plate even if it is partially damaged, and provide a baked ingot having a plate that is inexpensive and does not require replacement of the entire non-ventilated plate for a long period of time. The purpose is to provide a cooling device.

In short, this invention involves removably attaching members having eaves to the main body of the non-ventilated plate, which is arranged dotted on the grate of the equipment or provided on both sides in the direction of clinker flow, by means of bolts, etc., and replacing only the eaves, which are subject to severe wear and tear. If necessary, the eaves portion and the non-ventilated plate body are made of different materials, and the plate body is made of a lower grade material than the eaves portion, thereby reducing the price of the grate as a whole.

Embodiments of the present invention will be described below with reference to the drawings.

A first embodiment of the present invention is shown in FIGS. 7 and 8.

In the figure, reference numeral 15 indicates a plate main body of the non-air-permeable plate, and 20 is a partition wall arranged parallel to the clinker flow direction It serves not only to protect against burnout but also to reinforce the plate body 15.

Reference numeral 21 denotes a side wall similarly formed on the side of the plate body 15.

Reference numeral 22 denotes a removable part having an eaves part S, and this removable part 2
2, as shown in FIG. 9, a canopy part S is formed extending from the wall part 23.

The wall portion 23 of this attachment/detachment portion 22 and the side wall 21 of the grate body 15
The attachment/detachment portion 22 is removably attached to the plate body 15 by a bolt 16 and a nut 17.

Reference numeral 25 in FIG. 9 is a bolt insertion hole.

Reference numeral 18 denotes a weir plate portion in the form of a cutout, which is formed at the end of the attachment/detachment portion on the downstream side with respect to the clinker flow direction X, and extends so as to be perpendicular to the clinker flow direction.

This weir plate portion 18 prevents the flow (high-speed movement) of the high-temperature small-diameter clinker to some extent, thereby preventing wear on the bolts 16 and also preventing wear on the upper surface of the eaves portion S.

FIG. 10 is a perspective view showing the above-mentioned fire grate arranged in the baked ingot cooling device.

In the above configuration, if the eaves part S becomes worn out, the bolts 16 and nuts 17 can be removed and the attachment/detachment part 22 replaced.

In this case, as is clear from FIG. 10, the removable part 23 can be inserted between the impermeable plate main body 15 and the movable plate 5a from the upper surface side of the grate, making the replacement work easier.

FIG. 11 shows a second embodiment.

In this embodiment, the attachment/detachment part 22 shown in the previous embodiment is
In addition, a removable part 21' having a shank part S' is also provided on opposite sides of the plate body 15.

21' is a side wall provided on the plate body 15, and 23' is a wall of the attachment/detachment portion 22'.

In this embodiment, plates can be used not only on the sides of the cooler, but also in the center of the grate, thereby making it possible to regulate the clinker flow over the entire grate.

In addition, by removing one of the two detachable parts, it can be used freely for the right side or left side of the grate arrangement.
The shape of the plate body can also be unified to one type, increasing the productivity of the grate.

By implementing this invention, it is possible to replace only the eaves portion that is severely worn and burnt out, so maintenance and operation costs for the baked ingot cooling device can be kept low compared to the case where the entire non-ventilated plate is replaced. .

In addition, the constituent materials of the plate body and the eaves are different,
By using a low-grade material for the main body side, there is no need to use expensive materials even in unnecessary parts, and the unit production cost of the plate can be reduced.

Furthermore, since the eaves can be attached and detached entirely from the top surface of the grate, various effects are achieved, such as greatly improving work efficiency.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the baked ingot cooling device, Fig. 2 is a schematic plan view of the grate showing the arrangement of the plates of the grate, Fig. 3 is a perspective view showing the arrangement of the plates of the grate, and Fig. 4 is the grate plate arrangement. A in figure 3
- A sectional view, Figure 5 is a plan view of a conventional non-ventilated plate,
Fig. 6 is a B-B parent diagram of Fig. 5, Fig. 7 is a plan view of the impermeable plate according to the present invention, Fig. 8 is the CC homeland of Fig. 7, and Fig. 9 is a perspective view of the detachable part. 10 is a perspective view showing the arrangement of the air-impermeable plate shown in FIG. 8, and FIG. 11 is a plan view of the air-impermeable plate showing another embodiment. 3... Baked ingot cooling device main body, 5a... Movable plate, 5b... Fixed plate, 15...
...Nuts, 16...Bolts, 17...Nuts, 21.21'...
・Side wall, 22, 22'...Removable part, 23, 2
3'...Wall part, S, S'...Eave part.

Claims (1)

[Scope of Claims] 1. In a device in which baked ingots discharged from a kiln or the like are cooled on a grate while being transferred, an air-impermeable plate that prevents the transfer flow of the baked ingots is provided by a plate body having a side wall, and this side wall. What is claimed is: 1. A baked ingot cooling device comprising a removable part with an eaves part that is removably connected to the sintered ingot, and a plurality of the non-ventilated plates are disposed on a grate. 2. The baked ingot cooling device according to claim 1, wherein the side wall of the plate body is provided only on one side to form an air-impermeable plate. 3. The baked ingot cooling device according to claim 1, wherein side walls of the plate main body are provided on both sides to form an air-impermeable plate. 4. Claim 1, characterized in that an attachment/detachment part provided with a weir plate part on the downstream side of the baked ingot transfer direction and orthogonal to the transfer direction is connected to the plate main body to form an air-impermeable plate. The baked ingot cooling device according to any one of items 1 to 3. 5. The baked ingot cooling device according to any one of claims 1 to 4, characterized in that the plate body is made of a material with lower heat and wear resistance than the material of the detachable part.