WO2009151131A1

WO2009151131A1 - Air supply device and high‑temperature particulate cooling facility equipped with same air supply device

Info

Publication number: WO2009151131A1
Application number: PCT/JP2009/060816
Authority: WO
Inventors: 西本勝; 関口毅; 伊津野修; 永菅稔彦
Original assignee: スチールプランテック株式会社
Priority date: 2008-06-09
Filing date: 2009-06-09
Publication date: 2009-12-17
Also published as: JP5319964B2; EP2295910A1; TW201009276A; EP2295910A4; JP2009293890A; US20110168352A1; RU2454621C1; BRPI0915016B1; TWI390170B; CN102057241A; CN102057241B; KR101222612B1; KR20110004479A; EP2295910B1; BRPI0915016A2

Abstract

Disclosed are an air supply device and a high‑temperature particulate cooling facility equipped with the air supply device that are used to cool a high‑temperature particulate such as sintered ore, pellets or high‑temperature clinker and that have superior usage efficiency and good maintainability. The upper parts of water seal chamber upper spaces (24i), (24i) on the movable air passage (25) side and the upper part of the movable air passage (25) are connected, and the ring‑shaped air passage (25) is continuous in the circumferential direction. In addition, an air damper (81) is provided in the linking air duct (26) thereof, and the air damper (81) is closed in an ore supply/discharge section (B) and open in a cooling section (C).

Description

Description Air supply device and high-temperature granular material cooling equipment provided with the air supply device TECHNICAL FIELD

The present invention includes an air supply device that supplies air to a carrier that travels along a carriage path, and the air supply device, and includes high-temperature sintered ore and pellet ore (pelle zed). ore), etc., is related to a cooling system tor hot grain / lump material. Background technology.

One of the high-temperature granular material cooling facilities is a sintered ore cooling facility. This sinter cooling equipment cools from the lower side to the upper side of the carrier while the sintered ore, which is a high-temperature granular material, is placed on the carrier and moved along a generally circular movement path. It is configured to cool the sintered ore by flowing the working air (see, for example, Patent Documents 1 to 3).

This sinter cooling equipment has a carriage (carriage) in which multiple troughs (pan carriages) for placing sinter are connected between the inner and outer side walls along a circular path. It is arranged freely. There is a cool-air box at the bottom of the trough, where cooling air is supplied. Each trough wind box has a stationary circular duct via a connecting duct, and a movable circular duct is a water sealing device for this fixed annular air duct. The cooling air supply device is further provided via a connecting air duct to be supplied with cooling air.

This water sealing device has an inner peripheral annular water sealing chamber and an outer peripheral annular water sealing chamber formed in the movable annular air duct, and the stationary annular air duct includes these inner annular water sealing chamber and outer peripheral annular water sealing. It is comprised with the water seal seal board which a lower end part immerses in indoor seal water.

Hereinafter, an example of the above-described sintered ore cooling facility will be described in detail with reference to FIGS. 9 to 15. In FIG. 10, the carrier 1 is disposed so as to be movable along a circular movement path A (carriage path A) shown in FIG. 9. The carrier 1 cools the sintered ore with cooling air while moving the sintered ore from the supply section 8 through the cooling section C to the discharge section 9. Na In the following, the feed and discharge zones (or atmospheric pressure) B (feed & discharge zones B, or atmospheric) zone B). Incidentally, as shown in FIG. 15, there is a case where a waste heat recovery zone D is provided in a part of the cooling zone C (cooling zone C).

As shown in FIG. 10, the transport body 1 is composed of a plurality of troughs 7, an inner circular side wall 3, and an outer circular side wall 4. The plurality of troughs 7 are movably disposed on a pair of left and right guide rails 6 a laid along the movement path A via guide wheels 5 a and are connected to each other. The inner circular side wall 3 (outer circular side wall 3) and the outer side circular side wall 4 (outer circular side wall 4) are connected to each other by the connecting beam 2 (connec on beam) and arranged on the trough 7, and are connected to the side rail 6b. It has a side wheel 5b to be guided. The troughs 7 are connected to the circular side walls 3 and 4 at the front portions so as to be tiltable downward around the horizontal axis. In the ore excavation section 9, as shown in Fig. 11, the guide rail 6a is displaced downward with respect to the horizontal direction, so that the trough 7 is inclined downward via the guide wheels 5a, and the mounted firing It is possible to discharge the ore downward.

Each of the troughs 7 is composed of a trough body 11 having guide wheels 5a on both sides of the front and an air box 12 provided at the bottom of the trough body 11 as shown in FIG. It has been. Further, a ventilation plate 13 having a large number of ventilation holes formed on the upper surface of the wind box 12 is disposed. Further, the wind box 12 is provided with an opening 14 at the lower part of the inner circular side wall 3, for example. As shown in FIGS. 12 and 13, a movable-side annular air data 2 1 whose upper surface is opened along the circular movement path A shown in FIG. Is provided. The wind box 12 of the trough 7 and the movable-side annular air duct 21 are communicated with each other via a connecting air duct 26 connected to the opening 14. And this movable side annular air duct 21 has an inner side wall portion 2 2 and an outer side wall portion 2 3 having a double wall structure by inner plates 2 2 a and 2 3 a and outer plates 2 2 b and 2 3 b. As a result, the inner annular water sealed chamber 24 a and the outer annular water sealed chamber 24 b are opened. Further, an annular movable side air passage 25 is formed between the inner side wall portion 22 and the outer side wall portion 23 of the movable side annular air duct 21.

And while covering the whole upper part of this movable-side annular air duct 21, the movable-side air A fixed-side annular air duct 31 that forms an annular fixed-side air passage 37 that communicates with the passage 25 is provided. The fixed-side annular air duct 3 1 is formed in a U-shaped cross section with the bottom surface opened by the top plate portion 40 and the side wall portions 3 2 and 3 3, and the top plate portion 40 0 of the cooling portion. A plurality of intermediate air ducts 3 8 are connected to the arc-shaped air headers 39 shown in FIGS. 9 and 10, and cooling air is supplied to the fixed air passage 37. In addition, intermediate air duct 3 8 is not connected to supply / exhaust section B (supply section 8 and exhaust section 9). The fixed-side annular air duct 31 and the movable-side annular air duct 21 are connected via a water seal device 28 as shown in FIG. 12 and FIG. The water sealing device 28 includes the inner circumferential water sealing chamber 24 a and the outer circumferential water sealing chamber 24 b, and the side wall portions 3 2 and 3 3 of the fixed annular air duct 31 and the mounting flange 3. 5 through the water seal chambers 2 4 a, 2 4 ^ circular water seal chambers 2 4 a, 2 4 b) It consists of a and 3 4 b. Cover plates 3 6 a and 3 6 b are projected from the upper outer sides of the water seal plates 3 4 a and 3 4 b so as to cover the outer sides of the annular water seal chambers 2 4 a and 24 b. ing. In FIGS. 12 and 13, reference numeral 24 i denotes the upper space of the water seal chamber on the movable air passage 25 side. In addition, a dead plate 4 2 is attached to the fixed-side annular air duct 3 1 via the expansion joint 4 1 except for the intermediate air duct 3 8, while the inner plate 2 2 a and the outer plate 2 3 Labyrinth seal plates 4 3 a and 4 3 b whose upper end is close to the dead plate 42 are attached to the upper end of a to provide a lapin seal. In addition, on the upper part of the movement path A, inner and outer fixed side plates 5 1 a and 5 1 b arranged on the upper end of the inner and outer circular side walls 2 3 and 2 4 via a sealing device, and inner and outer fixed side plates 5 1 a , 5 1 b is arranged with a fixed hood 51 composed of a fixed top plate 5 1 c connecting the upper ends. An exhaust duct 52 is connected to a predetermined position of the fixed hood 51. Further, as shown in FIG. 14, a partition plate 47 is provided in the movable air passage 25 of the movable annular air duct 21 for each connected air duct 26 (each trough 7). The upper end of this partition plate 47 (partition plate) is provided with a labyrinth seal 43c adjacent to the dead plate 42. As a result, the movable side air passage 25 is partitioned in the circumferential direction (rotation direction) for each section where the connecting air duct 26 is present. Incidentally, the water sealing device 28 is not provided with the partition plate as described above.

As described above, as shown in FIG. 15, the exhaust heat recovery unit D is provided in a part of the cooling unit C. In some cases. In this exhaust heat recovery section D, after the sintered ore is cooled and heat is recovered from the high temperature air, the air is again supplied as cooling air to the annular air duct 31. . Patent Document 1 Japanese Unexamined Patent Publication No. Hei 4 1 1 3 9 3 80

Patent Document 2 Japanese Patent Laid-Open No. 6-25 7 9 5 5

Patent Document 3 Japanese Unexamined Patent Publication No. 2000-3 1 048 9 Disclosure of Invention

Problems to be solved by the invention

The sinter cooling equipment constructed as described above has the following problems. In the supply and discharge section B, the pressure in the movable air passage 25 and the wind box 12 is atmospheric pressure. On the other hand, the pressure of the movable air passage 25 in the cooling section C is 300 to 500 mm A q (hereinafter referred to as “cooling differential pressure”), and because of the structure, the water seal chamber upper space 24 i is also dead dead 42 and rapid. This pressure is maintained by the rinse seal plates 43a, 43b and 43c. However, the dead plate 42 has a length of 1 Om or more, and it is difficult in terms of manufacturing technology to completely seal such a length. Further, coupled with a deterioration phenomenon due to long-term use, a gap is formed between the labyrinth seal plates 43a, 43, 43c and the dead plate 42, and the cooling air in the water sealed chamber spaces 24i, 24i leaks. This reduces the cooling efficiency.

Furthermore, an amount of air corresponding to the amount of air leaked from the supply / exhaust section B flows from the movable side air passage 25 into the water sealed chamber upper spaces 24 i and 24 i in the cooling section C, and the air that flows in The cooling differential pressure causes a strong air flow in the direction of the supply and discharge section B in the water seal chamber upper spaces 24i and 24i. As a result, in the annular water sealed chambers 24a and 24b of the supply / exhaust ore section B, the sealing water undulates, and the air leaks from the labyrinth seal section to the movable air passage 25 side. Along with the sealing water in the sealed chambers 24 a and 24 b, the water splashes into the movable air passage 25. The seal water scattered and accumulated in the movable air passage 25 further scatters in the trough 7 and adheres to the wall surface of the supply / exhaust section B or the trough 7. If the sintered ore dust adheres to and solidifies on the water droplets that have adhered to it, it becomes a wet dust and troubles such as the trough 7 corroding or clogging. Occur and interfere with normal operation. In addition, the sealing performance is deteriorated by the waving and scattering of the sealing water, and the cooling efficiency is lowered.

In order to deal with the above problem, the partition plate 4 7 upper end labyrinth seal plate 4 3 a, 4 3 b, 4 3 c is adjusted in all sections to adjust the level of the upper end of the dead plate 4 2. It is necessary to manage so that the gap is almost eliminated. However, a large number of labyrinth seal plates installed in the long movable ring-shaped air duct 2 1 4 3 a, 4 3 b, 4

It is difficult to manage 3c. Due to the operation of the equipment and changes over time, this gap will further widen and the sealing performance will deteriorate, but adjustments cannot be made while the equipment is in operation.

In Patent Document 3, in order to prevent troubles caused by splashing of seal water, as shown in Fig. 16, water seal chamber upper space 2 4 i, 2

It has been proposed that 4i be supplemented with compressed air (auxiliary air). In other words, the inlet side branch duct (capturing air supply means) 61a is connected to the intermediate air duct 38 at the outlet end of the cooling section C, and the tip of the inlet side branch duct 61a is discharged. Middle air duct at the inlet end of cooling section C, connected to the top plate section 40 of the annular air duct 3 1

3 8 outlet branch duct (auxiliary air supply means) 6 1 b is connected and branched, and the outlet side branch duct 6 1 b has the tip end of the feed section 8 outlet side annular air duct 3 1 Top plate

4 Connected to 0. The auxiliary air supplied from these branch ducts 6 la and 6 lb passes through the both sides of the dead plate 4 2 from the space between the expansion joints 4 1 arranged at intervals, and the upper space in the inner water seal chamber 2 4 i and 2 4 i are supplied. As a result, the auxiliary space replenished from the branch ducts 6 1 a and 6 1 b causes the water seal chamber upper space 2 4 i,

With 2 4 i, the velocity of the air flowing to the supply / exhaust ore section B side can be greatly reduced, and the scattering of the seal water can be prevented.

However, in the method proposed in Patent Document 3, if the amount of air leakage increases, a large amount of auxiliary air flows for back pressure. As a result, the air leakage of cooling air increases, and the balance collapses, causing problems due to the air leakage. Occurs.

The present invention has been made in view of the above circumstances, and is used when cooling a high-temperature granular material such as a sintered ore pellet ore. It is an object of the present invention to provide an air supply device with good maintenance and a high-temperature granular material cooling facility equipped with this air supply device. Means for solving the problem

In order to achieve the above object, the present invention provides the following air supply device and high-temperature granular material cooling facility.

[1]. A plurality of transport bodies that are movably arranged along a circular moving bottleneck, and a movable side that is arranged along the movement path and is connected to each of the transport bodies via a connecting air duct. An annular air duct; and a fixed-side annular duct that is disposed along the moving path and is movably fitted to the movable-side annular air duct via a water sealing device,

The movable side annular air duct and the stationary side annular air duct form an annular air passage,

The water sealing device is composed of an annular water sealing chamber arranged along a movement path and a water sealing seal plate whose lower end is submerged in the sealing water in the annular water sealing chamber,

In the air supply device, an atmospheric pressure unit that stops leakage of air in the transport body is provided at a predetermined position in the movement path.

The upper space of the annular water seal chamber on the annular air passage side communicates with the annular air passage on the movable annular air duct side,

An air supply device characterized in that the annular air passage on the movable annular air duct side communicates in the circumferential direction and includes a connection air duct closing mechanism that closes the connection air duct at the atmospheric pressure portion. .

[2]. In order to allow the annular air passage of the movable annular air duct 卜 to communicate in the circumferential direction, there is no partition plate that divides the movable air passage of the movable annular air duct in the circumferential direction. The air supply device according to [1].

[3]. In order to communicate the annular air passage of the movable annular air duct in the circumferential direction, a notch is provided in the partition plate that divides the annular air passage of the movable annular air duct in the circumferential direction. The air supply device according to [1], characterized in that

[4] The connection air duct closing mechanism is configured such that an air damper is provided in the connection air duct, the air damper is closed at the atmospheric pressure portion, and the air damper is opened at other than the atmospheric pressure portion. The air supply device according to any one of [1] to [3], wherein

[5] The connecting air duct closing mechanism includes a connecting air duct closing plate attached to the stationary-side annular air duct of the atmospheric pressure portion, and the connecting air duct closing plate provides a connecting air. The air supply device according to any one of [1] to [3], wherein an inlet of the adduct is closed.

[6]. A foreign matter intrusion prevention plate for preventing foreign matter from entering the annular water sealed chamber from the annular air passage is provided at an upper portion on the annular air passage side.

[1] The air supply device according to any one of [5].

[7]. The air supply device according to any one of [1] to [6], wherein foreign matter collecting means for collecting foreign matter in the annular water sealed chamber is provided.

[8]. The air supply device according to any one of [1] to [7] is provided, and the high-temperature granular material is cooled using air supplied from the air supply device to the carrier. High temperature granular material cooling equipment.

[9]. The transport body includes a circular side wall disposed on the inner side and a plurality of troughs on which high-temperature powder particles are mounted at the bottom of the circular side wall,

The air supplied to the carrier is cooling air for cooling the high-temperature powder and particles mounted on the trough. [8]

[10] Features a side rail and side wheels that guide and support the movement of the transport body from the side, and the side wheels can be adjusted in position even while the transport body is moving. [8] or [9] The high-temperature granular material cooling equipment described in [9]. The invention's effect

According to the present invention, it is possible to provide an air supply device having excellent use efficiency and good maintainability, and a high-temperature granular material cooling facility including the air supply device. Brief Description of Drawings

FIG. 1 is an enlarged view of a main part in Embodiment 1 of the present invention.

FIG. 2 is an enlarged view of a main part in Embodiment 1 of the present invention.

FIG. 3 is an enlarged view of a main part in Embodiment 1 of the present invention.

FIG. 4 is an essential part enlarged view of Embodiment 1 of the present invention.

FIG. 5 is an enlarged view of a main part in Embodiment 2 of the present invention.

FIG. 6 is an enlarged view of a main part in the second embodiment of the present invention.

FIG. 7 is an enlarged view of a main part in the third embodiment of the present invention. FIG. 8 is an enlarged view of a main part in the third embodiment of the present invention.

Fig. 9 is an overall plan view of an example of a conventional sinter cooling facility.

FIG. 10 is a cross-sectional view of an essential part of a conventional example of a sinter cooling facility.

Fig. 11 is a front view of a conventional example of a sinter cooling facility.

Fig. 12 is an illustration of a conventional sinter cooling facility.

Fig. 13 is an illustration of a conventional sinter cooling facility.

Fig. 14 is an illustration of a conventional sinter cooling facility.

Fig. 15 is an overall plan view of another conventional sinter cooling facility.

FIG. 16 is an explanatory diagram of a conventional sinter cooling facility (Patent Document 3).

Explanation of symbols

A movement route, B supply / exhaust section, C. cooling section, D exhaust heat recovery section

1 Conveyor, 2 Connecting beam, 3 Inside circular side wall

4 outer circular side wall, 5 a guide wheel, .5 b side wheel

6a Guide Lenore, 6b Side Lenore, 7 Trough

8 Mining department, 9 Excavation department, 1 1 Trough body

1 2 Wind box, 1 3 Ventilation plate, 1 4 Opening

2 1 Moveable annular air duct,

2 2 Inside side wall,

2 2 a Inner side wall inner plate, 2 2 b Inner side wall outer plate 2 3 Outer side wall,

2 3 a Outer side wall inner plate I ^ 1, 2 3 b Outer side wall outer plate

24 a Inner ring water seal chamber, 24 b Outer ring water seal chamber, 24 i Water seal chamber upper space

2 5 Possible »Side air passage, 2 6 Connected air duct, 2 8 Water seal device

3 1 Fixed annular air duct, 3 2, 3 3 Side wall

34 a, 34 b Water seal plate, 3 5 Mounting flange

3 6 a, 3 6 b Force par plate, 3 7 Fixed air passage

3 8 Intermediate air duct, 3 9 Arc air header

4 0 Top plate, 4 1 Expansion joint, 4 2 Dead plate

4 3 a, 4 3 b 4 3 c Labyrinth seal plate

4 7 Partition plate (conventional), 4 7 a Partition plate (present invention), a, 6 1 b Branch duct

Air damper, 8 5 Anti-foreign material intrusion prevention plate, 9 1 Ded blur a P and dead brate height indicator, 9 2 b Lock nut 卜 c Seal mechanism

a Seal ring, 9 3 b Gland seal

a Mouth and seal ring level meter, 9 4 b Mouth nut ナ c JE panel, 9 4 d Seal mechanism

BEST MODE FOR CARRYING OUT THE INVENTION

The embodiment of the present invention will be described below by taking as an example a cooling facility for sintered ore which is a high-temperature granular material. In the present specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

Embodiment 1

The basic configuration of the sintered ore cooling facility in Embodiment 1 is the same as that shown in FIGS. 9 to 11 described above.

The sinter cooling facility of Embodiment 1 has a carrier 1 that is arranged in a movement along a circular movement path A shown in FIG. The sintered ore is placed on the carrier 1 and cooled by cooling air while moving from the supply section 8 to the discharge section 9 through the cooling section C.

The carrier 1 includes a plurality of troughs 7, an inner circular side wall 3, and an outer circular side wall 4 as shown in FIG. The plurality of troughs 7 are movably disposed on a pair of left and right guide rails 6 a laid along a movement path A via guide wheels 5 a and connected to each other. The inner circular side wall 3 and the outer circular side wall 4 are connected to each other by a connecting beam 2 and have side wheels 5 b arranged on a trough 7 and guided to a side nore 6 b. Each trough 7 is connected to the circular side walls 3 and 4 at the front part so as to be tiltable downward around the horizontal axis.

In the ore excavation section 9, the guide rail 6a is displaced downward, so that the trough 7 is inclined downward via the guide wheel 5a, and the mounted ore can be discharged downward. As shown in FIG. 12, each trough 7 includes a trough body 1 1 having guide wheels 5 a on both sides of the front part, and an air box 1 2 (cool-air) provided at the bottom of the trough body 1 1. box 12). The wind box 1 2 has a ventilation plate 1 3 (louver-board 13) on its upper surface. Further, the wind box 12 is provided with an opening 14 (opening 14) at the lower portion of the inner circular side wall 3, for example, and the inner circular side wall 3 is movable with the upper surface opened along the movement path A. A side annular air duct 21 is provided, and an air box 12 of the trough 7 and a movable side annular duct 21 are connected to each other via a connection air duct 26 connected to the opening 14. The movable side annular air duct 21 has an inner side wall portion 2 2 and an outer side wall portion 2 3 which are double-walled by the side plates 2 2 a and 2 3 a and the outer plates 2 2 b and 2 3. An inner circumferential water sealing chamber 2 4 a and an outer circumferential annular water sealing chamber 2 4 b which are formed in the structure and whose upper surface is opened are formed. Also inside the movable annular air duct 2 1 An annular movable air passage 25 is formed between the side wall 2 2 and the outer side wall 2 3. The fixed-side annular air duct 31 covers the entire upper part of the movable-side annular air duct 21, and forms an annular fixed-side air passage 37 that communicates with the movable-side air passage 25. This fixed annular air duct 31 is formed in a U-shaped cross section with the top plate portion 40 and the side wall portions 3 2 and 3 3 and the bottom surface opened. A plurality of intermediate air ducts 38 are connected from the arc-shaped air header 39 to the top plate part 40 of the cooling unit C, and the cooling air is supplied to the fixed side air passage 37. Note that the intermediate air dart 3 8 is not connected to the supply and discharge section B (the supply section 8 and the discharge section 9).

The fixed-side annular air duct 3 1 and the movable-side annular air duct 2 1 are connected via a water seal device 28 as shown in FIGS. 12 and 13. The water sealing device 28 includes a circumferential flange water sealing chamber 24a, an outer peripheral water sealing chamber 24b, and side wall portions 3 2 and 3 3 of the fixed annular air duct 31 and mounting flanges 3 5 2 4 a, 2 4 b (circular water seal chambers 2 4 a, 2 4 b, water seal plates 3 4 a 3 6 a, 3 6 b, 3 6 a, 3 6 b are connected to the outside of the upper part of each water seal plate 3 4 a, 3 4 b. It is a force par plate that is provided so as to cover.

In addition, on the upper part of the movement path A, inner and outer fixed side plates 5 1 a and 5 1 b arranged on the upper end of the inner and outer circular side walls 2 3 and 2 4 via a sealing device, and inner and outer fixed side plates 5 1 a , 5 1 b A fixed hood 51 consisting of a fixed top plate 51 c connecting the upper ends is arranged, and an exhaust duct 52 is connected to a predetermined position of the fixed hood 51.

In this embodiment, as shown in FIG. 15, an exhaust heat recovery unit D is provided in a part of the cooling unit C. In the exhaust heat recovery unit D, the sintered ore is cooled to a high temperature. After recovering heat from the air, the air is sent again to the fixed annular air duct 31.

In addition, the first embodiment has the following configuration.

(A) As shown in FIGS. 1 and 2, which are cross-sectional views of the main part in Embodiment 1 of the present invention, conventionally, the water-seal chamber upper space 2 4 i and 2 4 i on the movable air passage 25 side The labyrinth seal (dead plate 42 and labyrinth seal plates 4 3 a, 4 3 b) provided between the movable air passages 25 is eliminated, and the water-tight chamber on the movable air passage 25 side The upper space 2 4 i, the upper part of 2 4 i and the upper part of the movable air passage 25 are communicated so that air can flow. ing.

(B) As shown in FIG. 3, the partition plate 47 and the lapirin seal plate 4 3 c, which were conventionally provided in the movable side air passage 25, are eliminated, and the movable side air passage 25 is in the circumferential direction. It is supposed to communicate with.

(C) Air damper 8 1 is installed in each connected air duct 26.

As shown in Fig. 1, the air damper 8 1 is closed in the supply / exhaust section B and closes the connecting air duct 26 to prevent the cooling air from flowing out, and in the cooling section C As shown in Fig. 2, the connection air duct 26 is opened in the open state so that the cooling air is supplied to the wind box 12. The air damper 81 is opened and closed automatically by mechanical or electrical control. Incidentally, the air damper 8 1 uses a butterfly type air damper here, but is not limited thereto, and other types of air dampers such as a swing type air damper can be used.

With the above configuration, the movable side air passage 25 and the water seal chamber upper space 2 4 i, 2 4 i form a completely communicating annular air duct without a partition in the circumferential direction, and the air Since the air leak in the supply / exhaust section B is accurately suppressed by the action of the damper 8 1, the pressure difference between the supply / exhaust section B and the cooling section C is eliminated, and the supply from the cooling section C in the operating side air passage 25 The flow of air toward the ore removal part B is lost.

In addition, the movable side air passage 25 and the water seal chamber upper space 24 i, 24 i become a completely communicating annular air duct without a partition in the circumferential direction, and the movable side air passage 25 and the water seal chamber upper space 2 The pressures of 4 i and 2 4 i are also the same on the circumference.

Further, since there is no pressure difference in the circumferential direction in the movable air passage 25 and the water seal chamber upper space 24i, 24i, the movable air passage 25 and the water seal chamber upper space 24i, 2 4 No circumferential air flow is generated in i. As a result, no air flows from the water sealed chamber upper spaces 2 4 i, 2 4 i to the movable air passage 25 in the supply / exhaust part B.

As a result, it is possible to prevent troubles such as corrosion of the trough 7 due to splashing of sealing water from the annular water sealing chambers 2 4 a and 2 4 b and a decrease in cooling efficiency. In addition, the air damper 8 1 provided on the connected air duct 26 is maintained and managed compared to the conventional labyrinth seals (dead blade 42 and labyrinth seal plates 4 3 a, 4 3 b and 4 3 c). Is easy and maintainability is good. Also, because of the conventional dead plate 4 2 The intermediate air duct 3 8 can be installed on the inlet side and the outlet side of the exhaust heat recovery section D on the supply / exhaust section B where the intermediate air duct 3 8 could not be installed. Can be improved.

In the exhaust heat recovery section D, after the sinter is cooled and heat is recovered from the heated air, the air is sent again as cooling air. In many cases, foreign matter such as sintered ore dust is mixed inside. If such foreign substances enter the annular water sealing chambers 24 a and 24 b and accumulate, the water sealing performance deteriorates due to damage to the water sealing plates 34 a and 34 b. Therefore, as shown in Fig. 4, the foreign matter mixed in the cooling air is formed between the upper ends of the inner plates 2 2 a, 2 3 a of the annular water sealed chambers 2 4 a, 2 4 b and the mounting flange 3 5. Foreign matter intrusion prevention plate for preventing intrusion into the annular water sealed chambers 2 4 a and 2 4 b through the upper spaces 24 4 i and 24 i

(Baffle plate) 8 5 is preferably provided in the upper part of the upper space 2 4 i, 2 4 i of the water seal chamber. Of course, in addition to the heat recovery part D, if foreign matter is mixed in the supplied cooling air, the foreign matter intrusion prevention plate 85 may be provided in the same manner.

In addition, when foreign matter such as dust enters and accumulates in the annular water sealed chambers 2 4 a and 2 4 b, a suction device for sucking and collecting the foreign matters from the annular water sealed chambers 2 4 a and 2 4 b (Not shown) is preferably provided. The suction device should be installed in the supply / exhaust section B with sufficient space.

In addition, if the positional relationship between the side rail 6 b provided to support and support the traveling of the trough 7 from the side and the side wheel 5 b is not appropriate, the traveling of the trough 7 deviates from the circular shape and travels unevenly. As a result, the movable annular air duct 21 connected to the trough 7 via the connecting air duct 26 also rotates in a polarized manner. As a result, the annular water seal chambers 2 4 a and 2 4 b provided on the movable annular air duct 21 and the water seal plate 3 4 a provided on the fixed annular air duct 3 1 side. , 3 4 b, a large deviation occurs in the relative relationship, and the water sealing performance is reduced. In order to prevent this, it is necessary to adjust the gap between the side rail 6b and side wheel 5b, which causes uneven running. Since it can only be adjusted at the time, it cannot be adjusted during operation while checking the rotation state, making accurate adjustment difficult.

Therefore, here, the side wheel 5 b is configured to be adjustable with a screw jack. As a result, the position of the side wheel 5b can be adjusted even during operation. The rotation of 2 4 a and 2 4 b can maintain a high degree of roundness, and deterioration of the water sealing performance is prevented. Embodiment 2.

Embodiment 2 has basically the same configuration as that of Embodiment 1 described above, but in Embodiment 1, the movable side air passage 25 is communicated in the circumferential direction, and conventionally, the movable side air passage 25 In contrast to the fact that the partition plate provided at the top is eliminated, in Embodiment 2, a part of the conventional partition plate 47 is cut away, and the movable air passage 25 is communicated in the circumferential direction. The function of guiding the cooling air remains.

That is, in the second embodiment, as shown in FIGS. 5 and 6 which are cross-sectional views of the main part in the present embodiment, a partition plate 4 7 a in which an upper portion of a conventional partition plate 47 is cut is installed, The movable air passage 25 is communicated in the circumferential direction.

5 and 6, the upper part of the conventional partition plate 47 is cut out, but a cutout hole may be provided in a part of the conventional partition plate 47. Embodiment 3

Embodiment 3 basically has the same configuration as that of Embodiment 1 described above. However, in Embodiment 1, the connection air duct 2 6 is used as a means for closing the connection air duct 26 in the supply and discharge section B. In the third embodiment, a connecting air duct closing plate is attached to the fixed annular air duct 3 1 in the supply / exhaust section B, and the connecting air duct closing plate is used. As a result, the inlet of the connecting air duct 26 is closed.

That is, in this third embodiment, as shown in FIG. 7 and FIG. 8, which are cross-sectional views of the main part in the present embodiment, in the supply / exhaust portion B, the top plate portion 40 of the fixed-side annular air duct 31 is opened. Attach the connecting air duct closing plate (dead plate) 9 1 to the lower end of the mouth and dead plate height indicator 9 2 a fixed with the nuts 9 2 b, and connect the connecting air duct with the dead plate 9 1. The entrance of G 26 is closed. In order to enhance the effect of preventing air leakage when the dead air plate 9 1 closes the inlet of the connected air duct 26, the inlet of the connected air duct 26 is connected to the connected air duct 26 and the plate nut 9 4 b and the dish. Attached to the upper end of 9 4 a The seal ring 9 3 a and the ground seal 9 3 b are sealed.

Note that 9 2 c in FIG. 7 is a sealing mechanism between the rod 9 2 a and the top plate portion 40, and 9 4 d in FIG. 7 is between the rod 9 3 a and the connecting air duct 2 6. This is a sealing mechanism. By the way, the height position of the dead plate 9 1 can be adjusted to an appropriate position by the rod 9 2 a and the lock nut 9 2 b, and the height position of the seal ring 9 3 a is the rod 9 4 It can be adjusted to an appropriate position by using a and kut nuts 9 4 b. Furthermore, as shown in Fig. 8, an inlet guide roll 95 is provided at the tip of the entrance side of the dead braid 91 to the supply / exhaust section B, and this moves the connected air duct 26. Along with this, the dead plate 91 can smoothly close the inlet of the connecting air duct 26.

As a result, also in the third embodiment, the movable air chamber 25 has the same effect as that of the first embodiment by forming a completely communicating annular air duct having no partition plate.

In the first to third embodiments described above, the exhaust heat recovery unit D is provided, but it goes without saying that the present invention can also be applied to the case where the exhaust heat recovery unit D is not provided.

Further, in Embodiments 1 to 3 described above, the fixed-side annular air duct 31 covers the movable-side annular air duct 21 from above, but the present invention is movable as disclosed in Patent Document 1. The present invention can be applied even when the side annular air duct 21 covers the fixed side annular air duct 31 from above. .

Further, in Embodiments 1 to 3, which do not have a sealing function by the labyrinth seal portion, water sealing performance is achieved by adopting a bracket structure in which the position of the side wheel 5b can be adjusted with a screw jack. Preventing the decline is very effective. A bracket structure in which the position of the side wheel 5b can be adjusted is a sinter cooling facility equipped with a permanent sealing mechanism other than the first to third embodiments (for example, Patent Documents 1 to 3). It can be applied to.

The cooling facility for sintered ore has been described here as an example, but the present invention can also be applied to other high-temperature granular material cooling facilities such as pellets and high-temperature clinker. The preferred embodiment of the present invention has been described above with reference to the accompanying drawings, but the present invention is not limited to such an example. It is obvious for a person skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims, and of course, the technical scope of the present invention is also possible. Shall be included.

Claims

The scope of the claims

1. a plurality of transport bodies arranged so as to be movable along a circular movement path, and a movable-side annular air duct arranged along the movement path and connected to each of the transport bodies via a connecting air duct And a fixed-side annular air duct that is disposed along the movement path and is movably fitted to the movable-side annular air duct via a water seal device,

The movable annular air duct and the stationary annular air duct form an annular air passage,

The water sealing device is composed of an annular water sealing chamber disposed along a moving path and a water sealing seal plate whose lower end is submerged in the sealing water in the annular water sealing chamber.

2. In order to allow the annular air passage of the movable annular air duct to communicate in the circumferential direction, a partition plate that divides the movable air passage of the movable annular air duct in the circumferential direction is not provided. The air supply device according to claim 1.

3. In order to allow the annular air passage of the movable annular air duct to communicate in the circumferential direction, the partition plate that divides the annular air passage of the movable annular air duct in the circumferential direction is provided with a notch. The air supply device according to claim 1.

4. The connecting air duct closing mechanism is configured such that an air damper is provided in the connecting air duct, the air damper is closed at the atmospheric pressure portion, and the air damper is opened at other than the atmospheric pressure portion. The air supply device according to any one of claims 1 to 3, wherein the air supply device is provided.

5. The connection air duct closing mechanism is configured such that a connection air duct closing plate is attached to the stationary-side annular air duct of the atmospheric pressure portion, and the inlet of the connection air duct is closed by the connection air duct closing plate. The air supply device according to any one of claims 1 to 3, wherein the air supply device is configured as described above.

6. A foreign matter intrusion prevention plate for preventing foreign matter from entering the annular water seal chamber from the annular air passage is provided at an upper portion on the annular air passage side. The air supply device according to any one of the above.

7. The air supply device according to any one of claims 1 to 6, further comprising a foreign matter collecting means for collecting foreign matter in the annular water sealed chamber.

8. The high-temperature powder comprising the air supply device according to any one of claims 1 to 7, wherein the high-temperature powder is cooled using air supplied from the air supply device to the carrier. Cooling equipment.

9. The transport body is composed of circular side walls disposed inside and outside, and a plurality of troughs on which high-temperature powder particles are mounted at the bottom of these circular side walls,

9. The high-temperature granular material cooling equipment according to claim 8, wherein the air supplied to the carrier is a cooling air for cooling the high-temperature granular material mounted on the trough.

1 0. It has side rails and side wheels that guide and support the movement of the transport body from the side, and the side wheels have a structure that can be adjusted even while the transport body is moving. The high-temperature granular material cooling equipment according to claim 8 or 9.