JPS6138394B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for cooling and transferring baked ingots or heating for transferring pellets, etc., and more particularly to a heat exchange transfer apparatus for powder and granular materials suitable for cooling lime ingots for paper making.

As shown in FIG. 1, in a conventional powder heat exchange transfer device, particularly a baked ingot cooling device, the powder and granule fired in a baked ingot manufacturing equipment such as a rotary kiln 1 are transferred to a powder inlet 2 of the heat exchange transfer device. The powder is supplied onto a grate formed by a fixed ventilation plate 3 having a large number of ventilation holes and a movable grate 3', and a layer is formed from the powder inlet 2 to the outlet 4 by the reciprocating movement of the movable grate 3'. transported. During this time, the powder and granules on the fixed ventilation plate 3 and the movable grate 3' are cooled by the air blown into the cooling air chamber 5, while the air preheated by cooling is collected into the rotary kiln 1 etc. to save fuel. Useful for. The cooled powder and granules are sent to outlet 6.
At the same time as it is discharged from and sent to the next process,
The fine particles that have fallen into the cooling air chamber 5 during cooling are discharged from the powder discharge port 12 by the conveyor 7. In order to transport the powder and granular material in a layered manner, both the fixed ventilation plate 3 and the movable grate 3' have a cross-sectional shape that has a steep slope with respect to the transport direction of the powder and granular material, and The slope is curved into a gentle mountain shape. As a result, the drive device 10,
When the movable grate 3' driven by the connecting rod 9 moves in the direction of conveying the powder, the steeply inclined surface of the movable grate 3' pushes the powder from right to left in Fig. 1, and the powder is pushed forward. It is made to climb over the gently sloped surface of the fixed ventilation plate 3 located there. On the contrary, movable grate 3'
When the powder moves backward from left to right in FIG. 1 in the opposite direction to the transport direction, the steeply inclined surface of the fixed ventilation plate 3 located at the rear prevents the powder from flowing backward. In other words, in addition to the above-mentioned cooling device for powder and granular materials, the heat exchange device for powder and granular materials includes a movable grate 3' and a fixed ventilation plate 3, as shown in Fig. 1, in order to efficiently transfer the powder and granular material. It is necessary to curve it into a mountain shape.

However, in small processes such as compact heat exchange transfer equipment such as lime kilns, there are various restrictions on equipment size, transportation capacity, layout, etc., and it is difficult to satisfy the requirements that should be met in equipment design. It was very difficult to arrange the movable grate 3' and the fixed ventilation plate 3 in such a way that the movable grate 3' and the fixed ventilation plate 3 could be arranged. Furthermore, in order to curve the shape of the fixed ventilation plate 3 into the above-mentioned mountain shape,
The production cost of the fixed ventilation plate 3 is high, which is a big economic disadvantage, especially in small-sized devices.

The purpose of the present invention is to eliminate the drawbacks of the prior art described above, to be able to transfer powder and granules well without reducing the cooling effect of powder and granules, to be able to implement the powder and granules sufficiently in small-sized equipment, and to produce inexpensive powder. An object of the present invention is to provide a granular heat exchange transfer device.

In order to achieve the above-mentioned object, the present invention comprises a fixed ventilation plate including a flat plate part and a resistor having a substantially perpendicular surface on the powder transport side of the flat plate part.

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

The conventional fixed ventilation plate was a fixed ventilation plate 3 bent into a mountain shape as shown in FIG. 1, but the fixed ventilation plate 3 of the present invention has a flat plate portion 3a as shown in FIG.
The resistor 11 has a substantially vertical surface 11a on the powder transfer side of the flat plate portion 3a.

The resistor 11 shown in FIG. 2 has a right-angled triangular cross-sectional shape, and has a vertical surface 11a that is perpendicular to or nearly perpendicular to the direction in which the granular material is transported.

In the fixed ventilation plate 13 having the above horizontal portion 3a and the resistor 11, when the movable grate 3' is moving forward in the direction of transporting the powder or granular material, the movable grate 3' is pushed by the steep slope of the movable grate 3'. The powder and granules located on the flat plate portion 3a of the fixed ventilation plate 13 move forward, and the resistor 11
move forward over the gently sloped surface 11b. On the other hand, when the movable grate 3' moves back, the resistor 1
Due to the resistance of the vertical surface 11a of 1, there is almost no reversal. By constructing the fixed ventilation plate 13 of the present invention by the flat plate portion 3a and the resistor 11 in this manner, the powder and granular material can be transported in almost one direction, thereby increasing the transporting capacity.

Further, the thickness of the powder layer on the flat plate portion 3a and the movable grate 3' is made uniform because the fixed ventilation plate 13 has a substantially planar shape, and the heat exchange rate can be increased. The powder and granules inputted from the powder and granule inlet 2 are stirred by forming a constant layer thickness on the grate floor surface in the powder and granule chamber 8 by a reciprocating movable grate 3'. It is transferred toward the discharge port 4 while being
At this time, the movable grate 3' is moved by the variable speed drive device 1.
0 is connected by a connecting rod 9 to provide reciprocating motion. During this time, air or gas is introduced from the cooling air chamber 5 through the movable grate 3' and the ventilation holes in the flat plate portion 3a of the fixed ventilation plate 13, thereby cooling or heating the powder and granules for heat exchange. During this heat exchange, the ventilation hole or flat plate part 3a and the movable grate 3'
The fine powder particles leaking from the gap are discharged from the powder discharge port 12 by a discharge device such as a conveyor 7.

FIG. 3 shows a second embodiment of the invention;
This is a modification of the shape of the resistor 11 whose cross-sectional shape is a right triangle shown in the embodiment. The fixed ventilation plate 23 in this embodiment is formed by a flat plate portion 3a and a resistor 111.
The top of the head is shaped into a semicircle to make it easier for the powder to cross over.

FIG. 4 shows a third embodiment, in which a fixed ventilation plate 33 is formed by a flat plate portion 3a and a resistor 112, and is perpendicular to the powder transfer side of the resistor 112, as in the second embodiment. A surface 112a is formed to prevent the powder from flowing backward.

In FIG. 5, a fixed ventilation plate 43 is formed by a flat plate portion 3a and a resistor 113, and a vertical surface 113a is formed on the powder transfer side of the resistor 113.

According to this invention, by constructing the fixed ventilation plate by the flat plate portion and the resistor, it is possible to transfer and heat exchange the powder and granular material favorably.

In addition, since the fixed ventilation plate is made of a flat plate part and a resistor, manufacturing costs can be kept low, and it can be implemented even for small equipment, which was economically disadvantageous, and maintenance of the equipment can be reduced. , inspection becomes easier.

Furthermore, the layer height of the powder and granules can be made uniform, and the heat exchange ability can be exhibited even better.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a conventional powder heat exchange transfer device, FIG. 2 is a side sectional view of a powder heat exchange transfer device according to the present invention, and FIG. 3 is a resistor showing a second embodiment. Partial side cross-sectional view of the fixed ventilation plate centered on 4th
The figure is a partial side sectional view of a fixed ventilation plate showing a third embodiment, and FIG. 5 is a partial side sectional view of a fixed ventilation plate showing a fourth embodiment. 3, 23, 33, 43...Fixed ventilation plate, 3...
Movable grate, 3a... flat plate part, 9... connecting rod,
10... Drive device, 11, 111, 112, 11
3...Resistor, 11a, 111a, 112a, 1
13a... Vertical surface.

Claims (1)

[Claims] 1. In a device having a large number of ventilation holes, in which a fixed ventilation plate and a movable grate form a transfer device, and heat exchange is performed while transferring powder and granular material by reciprocating motion of the movable grate, the fixed ventilation plate is replaced with a flat plate. What is claimed is: 1. A heat exchange and transfer device for powder and granular material, comprising a resistor having a substantially perpendicular surface on the powder and granule transfer side of the flat plate section.