JPS5818640Y2 - Air seal device on the supply and discharge side of sintering equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air seal device on the supply and discharge side of a combustion facility.

As shown in FIG. 1, in the sintering equipment, a large number of pallets 1 connected in an endless manner are moved along their rotation path, and bedding ore is supplied from the bedding hopper 2 during the outward movement. The raw ore is supplied from the raw ore hopper 3, the level of the raw ore is made uniform by the leveling device 4, the raw ore is ignited by the ignition device 5, and sintered in this order. It is discharged from the terminal end toward a cooler (not shown).

A wind box group 6 is provided below the ignition and sintering zone during the outgoing passage, so that ventilation is carried out in the raw ore layer within the pallet 1 during ignition and sintering.

Therefore, the ore feeding side end 6 of this wind box group 6
An air seal device is provided at each of the ends A and the ore discharge side end 6B.

A conventional air seal device of this type is shown in FIGS. 2 and 3.

That is, 7 is a pallet main beam, which supports the pallet bottom plate and is provided in plurality at required intervals in the direction of movement thereof.

8 is a wind box, which is provided below the movement path d of the pallet main beam 7.

9 is a seal plate (dead plate), which is always urged upward by a link mechanism 10 and a counterweight 11 suspended from this link mechanism 10, and which is connected to one end of the seal plate and the wind box end 8A. Asbestos 12 is interposed between them.

In such an air seal device, the upper surface 9A of the seal plate 9 is always in contact with the lower surface 7A of the plurality of main pallet beams 7, and the space between the seal plate 9 and the wind box end 8A is closed with asbestos 12. , ventilation is on the ore discharge side 1
3. Also, it can prevent blowing out to the side of the pallet movement path d.

However, in such a conventional device, since the lower surface 7A of the main pallet beam and the upper surface 9A of the seal plate are in vertical contact with each other in a metal-touch state, ore may get caught between the two, and the seal plate 9 and the pallet main beam 7 may There is a drawback that the sealing function is lost due to damage (scratches) or wear.

In addition, it is necessary to divide the seal plate 9 in its width direction to prevent wind waves from flowing through the gap caused by the deflection of the pallet main beam 7, and furthermore, the asbestos 12 is prevented from being damaged due to vibration of the seal plate 9. There were also disadvantages such as frequent occurrences.

Although the air seal device on the ore discharge side 13 has been described in FIGS. 2 and 3, the same problem also exists in the air seal device on the ore feed side.

The present invention has been devised in view of the above, and examples thereof will be described below with reference to FIGS. 4 and 5.

15 is a pallet main beam, and a plurality of pallet main beams are provided at a required pitch for each pallet 16 connected in an endless manner.

Bed ore, raw ore, etc. are loaded onto the plurality of pallet main beams 15 via screen members (not shown).

17 is a wind box;
is provided as a single layer below the ignition zone and the sinter zone (see FIG. 1).

Reference numeral 18 designates an integral cover, and this integral cover 18 is disposed so as to cover the lower part of the pallet main beam moving path from the upper open edge of the wind box 17 at the end of the ore discharge side. A space 19 communicating with the inside is formed.

In the illustrated example, chute portions 18A are formed at equal pitches at four locations on the bottom of the integral cover 18, and these chute portions 18
Ore that has fallen from the pallet 16 through A is taken out of the machine as needed.

18B is a blind lid of each chute portion 18A.

20 is a horizontal axis, which represents the wind box 17 in the cover unit 18 and the chute portion 18A adjacent thereto.
and between the respective chute portions 18A so as to penetrate through the cover unit 18 or the space 19.

In this state, the installation pitch of the horizontal shafts 20 is equal to the installation pitch of the pallet main beams 15.

A pipe 21 is externally fitted and fixed concentrically inside the space 19 on each horizontal shaft 20, and a seal plate 22 is attached to the top end of these pipes 21.
, an asbestos material 23 is provided between the bottom end and the cover integral bottom surface 18a below the bottom end.

The pipe 21 and the asbestos material 23 are provided over the entire width of the space 19, and together constitute a closing member 24 that closes the space between the lower end of the seal plate 22 and the integral bottom surface 18a of the cover.

When the seal plate 22 is in its upright state, it has a height such that its tip protrudes into the inside of the pallet main beam movement path, and is configured such that the front side in the pallet main beam movement direction is taller. be done.

On the other hand, a lever 25 extending rearward in the moving direction of the pallet main beam is fixed to the horizontal shaft 20 outside the cover unit 18, and a weight 26 is suspended from the tip of the lever 25.

The weight 26 is an example of a biasing device, and may be replaced by a spring or the like.

Therefore, the seal plate 22 is urged to rotate rearward in the moving direction of the pallet main beam 15 via the lever 25, the horizontal shaft 20, and the pipe 21 by the action of the weight 26.

Reference numeral 27 denotes a stopper provided on the cover unit 18, which prevents the seal plate 22 from being reversed by engaging with the lever 25.

Note that this stopper 27 is provided as necessary, and is not necessarily required, for example, when the seal plate 22 is provided at the same pitch as the pallet main beam 15 as in the illustrated example.

According to the above, due to the movement of the pallet main beam 15, the flat end front surface 15A of the pallet main beam 15 or the corner portion 1 of the seal plate 22 protruding into the pallet main beam movement path
5B are in contact with each other, and in this state, the seal plate 22 is in contact with the weight 26.
Because the seal plate 22 is pushed back against the urging by
gradually shifts to a state of overturning.

When the pallet main beam 15 further moves, the pallet main beam 1
5 gets over the tip of the seal plate 22.

At this time, a seal plate 22 is attached to the bottom surface 15C of the pallet main beam 15.
The tips of the two are in contact.

After the pallet main beam 15 passes over the seal plate 22, the seal plate 22 is rotated toward the upright side by the biasing force of the weight 26, and comes into contact with the flat end front surface 15A of the following pallet main beam 15 or its corner portion 15B.

The same operation is repeated thereafter.

In this embodiment, the seal plates 22 are provided in an open manner, and are configured so that the height increases in the direction of movement of the pallet main beam 15, so that at least two
Since the seal plates 22 close the space between the pallet main beam 15 and the pipe 21, a reliable sealing effect is achieved.

As is clear from the above explanation, according to the present invention, the seal plate contacts the front surface of the lower end of the pallet main beam, so even if the pallet main beam bends, there is no gap between the pallet main beam and the seal plate, and there is no gap between the two. There is also no risk of ore getting caught in the metal.

Therefore, the sealing effect is reliably exhibited.

Furthermore, damage caused by wear and scratches on the seal plate or main beam of the pallet is significantly reduced compared to conventional systems.

Further, since the parallelism between the lower end surface of the pallet main beam and the seal plate does not pose as much of a problem as in the prior art, adjustment is easy.

In the above-mentioned embodiment, only the ore discharge side air seal device was explained, but the same applies to the ore supply side air seal device.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of the sintering equipment, Figs. 2 and 3 show conventional equipment, Fig. 2 is a longitudinal sectional front view, and Fig. 3 is the X of Fig. 2.
4 and 5 show an embodiment of the present invention, FIG. 4 is a longitudinal sectional side view, and FIG. 5 is a Y--Y sectional view of FIG. 4. 15...Pallet main beam, 16...Pallet, 17...Wind box, 18...
...Hippo together, 19...Space, 20...
...Horizontal axis, 21...Pipe, 22...
Seal plate, 23... Asbestos material, 24...
...Closing member, 25...Lever, 26...
... Weight, 27 ... Stopper.

Claims (1)

[Scope of utility model registration request] A cover unit provided below the pallet main beam movement path at the end of the wind box on the ore supply side or the ore discharge side; and a cover unit disposed within the space between the cover unit and the pallet main beam movement path and the pallet main beam movement path. a plurality of seal plates that can be raised and lowered around a horizontal axis in a direction perpendicular to the pallet, an urging tool that urges the seal plates to rotate rearward in the moving direction of the pallet main beam, and a cover integrated with the lower end of the seal plates. and a closing member that closes the space between the seal plates and the bottom surface, and the plurality of seal plates are arranged at intervals in the moving direction of the pallet main beam, and each seal plate has a tip end inside the pallet main beam movement path when the seal plate is in an upright state. An air seal device on the supply and discharge side of combustion equipment, characterized in that it is configured to protrude.