JPS6342316Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a pallet in a sintering machine or a firing machine for sintering or burning powder such as iron ore or coal ash.

Conventional configuration and its problems Figure 1 shows the general configuration of a sintering machine (firing machine).
The sintering machine connects a large number of pallets 1 in an endless manner and rotates them by an appropriate driving means, and feeds the empty pallets 1 from the ore feeding section 2 at the starting end of the sintering path A (upper horizontal movement path). After the ore is supplied, it is ignited in an ignition furnace 5 and sequentially sintered. The sintered ore subjected to the sintering process is discharged from an ore discharge section 4 formed at the end of the sintering path A, and is crushed by a crusher 5 to a predetermined particle size. On the other hand, a large number of wind boxes 6 are provided below the sintering path A over substantially the entire length, and are configured to suck exhaust gas during sintering and discharge it from a suction pipe 7 through a gas main duct 8. Seal devices 9 for preventing outside air from leaking into the wind box 6 are provided outside the wind box 6 at both ends of the ore supply section 2 side and the ore discharge section 4 side.

FIG. 2 is an enlarged view of this sealing device 9. Although the sealing device 9 in the figure shows the one on the ore discharge section 4 side, the one on the ore supply section 2 side is also symmetrical and has the same configuration. In the figure, 10 is the main pallet beam, and 11 is the main pallet beam 1.
Great bar spanning between 0 and 12
is the ore placed on Great Bar 11.
The sealing device 9 is configured to press a dead plate 14 supported by a quadruple link mechanism 13 against the lower surfaces of two or more main pallet beams 10 by biasing a weight 15, and presses one end of the dead plate 14 and the upper end of the wind box 6. An airtight flexible body 16 is provided between them to prevent outside air from leaking into the window box 6. Documents related to the sealing device 9 include Japanese Patent Publication No. 52-36725, Japanese Utility Model Publication No. 51-41843, Japanese Utility Model Publication No. 52-24569, and Japanese Utility Model Publication No. 58-51192.
There are publications etc.

However, even with the provision of such a sealing device 9, leakage of outside air could not be sufficiently prevented. That is, although the contact between the lower surface of the pallet main beam 10 and the upper surface of the dead plate 14 prevents outside air from leaking from this portion, there have been cases where it has not been possible to prevent outside air from leaking due to the structure of the pallet 1 itself.

That is, as shown in FIG. 3 as an enlarged view of part A in FIG.
The insulation pieces 17 are each constructed with short lengths as shown in FIGS. 4 and 5 to allow for thermal expansion even when the great bar 11 is at an abnormally high temperature. , a gap 18 is placed between each. This gap 18 was set to several tens of mm over the entire width of the pallet 1 when it was cold, and this gap 18 allowed outside air 19 to leak.

Purpose of the invention The object of the present invention is to provide a pallet for a sintering machine/firing machine that eliminates the above-mentioned conventional drawbacks.

Structure of the invention In order to achieve the above object, the pallet in the sintering machine/firing machine of the present invention has two insulating pieces at both ends of each insulation piece provided at the top of the main beam of the pallet. A stepped part having a vertical surface for contact is provided, and each insulation piece is arranged on the upper part of the main beam of the pallet with the vertical surfaces for contact of the stepped part in contact with each other. This makes it possible to reduce air leakage drawn into the window box.

Embodiment and Operation An embodiment of the present invention will be described below based on the drawings. It should be noted that components having the same configuration as those described in the conventional example are given the same numerals and the description thereof will be omitted.

In Figures 6 and 7, 20 is an insulation piece, each with vertical surfaces 2 for contact at both ends.
1 is provided on the upper part of the pallet main beam 10, with the contacting vertical surfaces 21 of the stepped portions being in contact with each other. In this case, as is clear from the figure, a gap 18 is provided between the stepped portions to allow thermal expansion.

By providing the stepped portions at both ends of the insulation piece 20 in this way, the insulation piece 20 and the insulation piece 20
Even if there is a gap 18 between them to allow thermal expansion, air leakage can be reduced by the contact of the contacting vertical surfaces 21 with each other. Furthermore, thermal expansion between the insulation pieces 20 is absorbed by the gaps 18.

Effects of the Invention As described above, according to the present invention, it is possible to reduce the leakage air drawn into the window box.

[Brief explanation of the drawing]

Fig. 1 to Fig. 5 show a conventional example, Fig. 1 is an overall side view of the sintering machine, Fig. 2 is an enlarged side view of the sealing device, Fig. 3 is an enlarged view of the part A in Fig. 2, Fig. 4 is a partially cutaway plan view of the pallet, Fig. 5 a is a longitudinal sectional front view of the insulation piece, Fig. 5 b is a bottom view of the same, Fig. 5 c is an enlarged sectional view taken along line A-A of a; Figure 6,
FIG. 7 shows an embodiment of the present invention, FIG. 6 is a partially cutaway plan view of the pallet, and FIG. 7 is an enlarged view of the main part. 1...Pallet, 10...Pallet main beam, 1
7, 20...Insulation piece, 21...
...vertical surface for contact.

Claims (1)

[Scope of utility model registration request] In the pallet of the sintering machine/firing machine, a stepped part having a vertical surface for contact is provided at both ends of each insulation piece provided at the top of the main beam of the pallet, and the vertical surfaces for contact of the stepped part are connected to each other. 1. A pallet for a sintering/firing machine, characterized in that each insulation piece is disposed above the main beam of the pallet in a contacting state.