JPH06257955A - Cooler of high temperature powdery grain - Google Patents

Abstract

PURPOSE:To facilitate maintenance and inspection of a moving mechanism of a cooler in which hot particles of sinter are cooled by cooling air supplied from downward while they are being moved, by a method wherein a fixed annular air duct is provided to cover a moving annular air duct from upward. CONSTITUTION:In a cooler in which sinter thrown from a supply part into a carrying car 1 which is movable through a guide wheel 5 on a guide rail 6 along a circular moving path is cooled by cooling air while the carrying car 1 is being moved up to a discharge part, a moving annular air duct 21 which is opened in the upper surface along the moving path of the carrying car 1 is provided on a round side wall 3 inside the carrying car 1, and an annular water sealing room 24 which is opened in the upper surface is formed on respective side walls 22 and 23. The annular air duct 21 is connected to openings 14 of a plurality of troughs 7 of the carrying car 1 through a connection duct 26. In order to cover the whole of an upper part of the air duct 21, a fixed annular air duct 31 connected to a cooling air supply duct 51 is arranged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for high-temperature powder particles.

[0002]

2. Description of the Related Art A cooling device for high-temperature powder or granular material, for example, a cooling device for sinter ore, allows cooling air to flow from below to above while moving the sinter ore along a circular path. In this way, the sinter ore is cooled.

Conventionally, as this type of cooling device, there is one disclosed in Japanese Patent Application Laid-Open No. 4-139380. In other words, this cooling device is provided with a carrier that is movable in a circular path (left and right circular side walls connected by connecting beams and the bottom surface between these side walls, and the sintered ore is placed on the upper surface. It is designed to supply cooling air into the ventilation box provided in the trough (which is composed of the trough to be placed), and is circular in order to supply the cooling air to the ventilation box. A fixed side cooling duct is provided along the path, a trough side cooling duct is provided on the carrier side, and the fixed side cooling duct and the trough side cooling duct are sealed by a water seal.

Further, the fixed side cooling duct further comprises:
It was placed on the ground along a guide rail that guides the carrier.

[0005]

However, according to the above structure, since the fixed side cooling duct is provided along the guide rail, the inner peripheral portion of the lower portion of the carrier is almost entirely covered by the fixed side cooling duct. There is a problem that it is difficult to perform maintenance and inspection work on the moving parts of the carrier, that is, the guide wheels, the guide rails, etc.

[0006] Therefore, an object of the present invention is to provide a cooling device for a high temperature powder or granular material which can solve the above problems.

[0007]

In order to solve the above-mentioned problems, a cooling device for high temperature powder particles according to the present invention comprises an inner circular side wall and an outer circular side wall which are concentrically arranged and are connected to each other by a connecting beam. , A plurality of troughs arranged at the bottom between these circular side walls and movable along a circular movement path via guide wheels, and high temperature powder particles placed on these troughs. In a cooling device for high-temperature powder particles that cools a body with cooling air supplied from below the mounting surface, a wind box is formed in each of the troughs, and a movable top surface is opened along the movement path. The side annular air duct is attached to the circular side wall side, and the inner and outer side wall portions of the movable side annular air duct are respectively provided with annular water sealing chambers whose upper surfaces are opened, and the movable side annular air duct is opened from above. A fixed-side annular air duct is provided, and seal plate members hung from both side wall portions of the fixed-side annular air duct are positioned below the water surface in the annular water-sealing chambers on both sides of the movable-side annular air duct. An opening is formed on the outer circular side wall portion so as to correspond to each trough and communicates with each wind box, and the opening and the movable-side annular air duct are communicated with each other through a coupling duct to form a trough. The fixed side annular air duct is provided in the fixed side annular air duct corresponding to the supply and discharge parts of the granular material in the moving path, and a dead plate is provided for blocking the air passage formed therein over a predetermined section. The first seal plate, which narrows the communication gap between the internal air passage and the annular water sealing chamber, is attached to the movable side annular air corresponding to the lower end of each side wall of the stationary side annular air duct. And a second seal plate for performing a labyrinth seal with the first seal plate on the outer side of the lower end portions of both side wall portions of the fixed-side annular air duct. .

[0008]

According to the above construction, the movable side annular air duct is provided away from the side wall portion of the carrier, the opening side of the movable side annular air duct is on the upper side, and the fixed side annular air duct for supplying cooling air is provided. Since the air duct is placed so as to cover the movable side annular air duct from above, the maintenance and inspection of the moving mechanism is extremely easy compared to when the fixed side annular air duct comes to the position corresponding to the moving mechanism of the carrier. Can be done.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1 and FIG. 2, reference numeral 1 denotes a carrier that is movably arranged along a circular movement path A, and transfers sinter ore, which is a high-temperature powder or granular material, from a mining unit (supplying unit) to an mine discharging unit. It is for cooling with the cooling air while moving to the (discharging part).

The carrier 1 is arranged at the inner circular side wall 3 and the outer circular side wall 4 which are connected to each other by a connecting beam 2, and at the bottom between these circular side walls 3 and 4, and through a guide wheel 5. It is composed of a plurality of troughs 7 movably on a guide rail 6 laid in a circular shape.

Next, the cooling device for the sinter ore will be described. That is, each of the troughs 7 has guide wheels 5 on both sides.
And a wind box 12 provided on the upper surface of the trough body 11.
The upper surface of the is a ventilation plate 13 in which a large number of ventilation holes are formed,
Further, an opening 14 is provided on one side surface of the wind box 12, for example, a lower portion of the inner circular side wall 3.

The inner circular side wall 3 of the carrier 1 is shown in FIG.
As shown in FIG. 5, a movable side annular air duct 21 whose upper surface is opened along the movement path is attached, and upper surfaces are opened at inner and outer side wall portions 22 and 23 of the movable side annular air duct 21. Circular water seal room 2
4 are provided respectively, and the movable side annular air duct 2 is also provided.
Each of the side wall portions 22 and 23 of No. 1 has a double wall structure constituted by inner and outer plates 22a, 22b, 23a and 23b, respectively, and a pair of inner and outer plates 22b and 23a form an annular movable member. Side air passage 25
The opening 14 of each trough 7 and the movable side annular air duct 21 are connected via a connecting duct 26.

The movable side annular air duct 21
A fixed side annular air duct 31 is provided which covers the entire upper part of the above and has an annular fixed side air passage 30 communicating with the movable side air passage 25.

The fixed side annular air duct 31 and the movable side annular air duct 21 are sealed by water sealing. That is, the seal plate body 3 is arranged so that the fixed side annular air duct 31 has both side wall portions 32 and 33 inside the annular water sealing chambers 24 on both sides and the lower end thereof is located below the water surface.
4 is provided so as to hang down via a mounting flange 35.

A cover plate 36 for covering the outside of the annular water-sealing chamber 24 is obliquely provided on the outside of the upper portion of each seal plate 34. Further, as described above, the movable side annular air duct 21 and the opening 14 formed in the inner circular side wall 3 corresponding to each trough 7 are communicated with each other through the connecting duct 26. The inside of the wind box 12 of each trough 7 and the air passage 25 formed in the movable side annular air duct 21 are communicated with each other via 26.

By the way, a supply / discharge unit B (see FIG. 2) for supplying and discharging the sintered ore is provided in the middle of the moving path of the carrier 1, and the wind box 12 of the trough 7 is provided between them. It is in communication with the atmosphere.

Therefore, it is considered that the cooling air does not escape in this portion. That is, the lower surface opening width of the fixed side air passage 30 of the fixed side annular air duct 31 is made narrower than the width of the movable side air passage 25 of the movable side annular air duct 21, and both side wall portions of the fixed side annular air duct 31. The lower ends of 32 and 33 are movable side annular air ducts 21.
Each of the annular water-sealing chambers 2 of the movable-side annular air duct 21 are located slightly above the upper end surfaces of both side wall portions 22 and 23 of the
At the upper end portions of the inner and outer plates 22b and 23a forming the respective inner and outer plates 4, the side wall portions 3 of the fixed side annular air duct 31 are formed.
A first seal plate 41 for narrowing the communication part gap a with the second and the third parts as much as possible is provided over almost the entire movement path, and further outside the lower end parts of the both side wall parts 32 and 33 of the fixed side annular air duct 31. Is provided with a second seal plate 42 that projects above the first seal plate 41 and performs a labyrinth seal with the first seal plate 41 over the entire movement path.

Further, in the sinter supply / discharge section B, a dead plate 43 for blocking the fixed side air passage 30 in the fixed side annular air duct 31 is provided.
The dead plates 43 are separated by a predetermined distance from each other, and the front and rear side surface blocking plates 44 block the entire cross section of the fixed-side air passage 30, and the lower surface disposed between the lower ends of the side surface blocking plates 44. It is composed of a blocking plate 45.

A cooling air supply duct 51 is connected to a predetermined portion of the fixed side annular air duct 31,
Further, above the trough 7, a fixed hood 52 for collecting the high temperature air that has been cooled and has a high temperature is provided over the entire movement path.

Next, the cooling action will be described. In the cooling section C of the moving path, the cooling air supply duct 5
1 to fixed side air passage 3 of fixed side annular air duct 31
The cooling air supplied to the inside of the trough 7 enters the wind box 12 in each trough 7 through the connecting duct 26, and the ventilation plate 13
Through the trough 7, the sinter is cooled, and the sinter is discharged from the upper fixed hood 52.

In the supply / discharge section B, the cooling air that has entered the fixed side air passage 30 of the fixed side annular air duct 31 is blocked by the dead plate 43 and does not flow to the trough 7 side. Outflow from the part B to the atmosphere side is prevented.

The fixed side air passage 3 in the cooling section C is also provided.
0 and the annular water sealing chamber 24 side communicating portion gap a is due to the labyrinth effect of the first seal plate 41, the side wall portions 32 and 33 of the fixed side annular air duct 31, and the second seal plate 42. Is effectively suppressed, and the leaked cooling air is reliably prevented from leaking to the outside by water sealing.

In this way, the fixed side annular air duct is
Since the carrier is located above the moving mechanism, maintenance and inspection work of the moving mechanism is facilitated, and an annular water sealing chamber is provided in the movable annular air duct below the stationary annular air duct. Since the movable side annular air duct is supported on the carrier side, even if the carrier side suddenly drops for some reason, for example, the bottom of the ring-shaped water sealing chamber only separates from the seal plate body, and therefore the seal is not a problem. The state can be maintained.

By the way, when an exhaust heat recovery device for cooling the sintered ore and recovering heat from the heated air is connected in the middle of the moving path of the carrier, it is shown in FIG. As described above, the exhaust heat recovery unit D is provided after the supply / discharge unit B. In the exhaust heat recovery unit D, high temperature air returns from the exhaust heat recovery device side into the fixed side annular air duct 31. .

This high temperature air enters the annular water sealing chamber 24,
Inconvenience occurs when the water in it becomes hot and boils. Therefore, in order to prevent this, in the exhaust heat recovery part D, the first seal plate 41 described in the above embodiment is used.
Above the above, that is, another seal plate is provided so as to narrow the communication part gap a with the lower ends of the side wall parts 32 and 33 of the fixed side annular air duct 31. Further, in order to avoid deterioration of the exhaust heat recovery effect due to the mixing of the high temperature air and the normal part cooling air, the dead plate 43 is provided between the exhaust heat recovery part and the normal cooling part.

[0026]

As described above, according to the structure of the present invention, the movable side annular air duct is provided away from the side wall portion of the carrier, and the opening side of the movable side annular air duct is provided on the upper side for cooling. Since the fixed-side annular air duct that supplies air is arranged so as to cover it from above the movable-side annular air duct, when the movable-side annular air duct comes to the position corresponding to the moving mechanism part of the carrier as in the conventional case. In comparison, the maintenance and inspection of the moving mechanism can be performed extremely easily.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts of a cooling device according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of a cooling device in the embodiment.

FIG. 3 is a cutaway sectional view of an essential part of the cooling device in the embodiment.

[Explanation of symbols]

 1 Carrier 2 Connection Beam 3 Inner Circular Side Wall 4 Outer Circular Side Wall 7 Trough 12 Wind Box 14 Opening 21 Movable Side Annular Air Duct 22 Inner Side Side Wall 23 Outer Side Wall 24 Annular Water Seal Chamber 25 Movable Side Air Passage 26 Coupling Duct 30 Fixed side air passage 31 Fixed side annular air duct 32, 33 Side wall 34 Seal plate 41 First seal plate 42 Second seal plate 43 Dead plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takami Nakamoto 5-3-3, Nishikujo 5-chome, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd.

Claims (1)

[Claims] 1. An inner circular side wall and an outer circular side wall arranged concentrically and connected to each other by a connecting beam,
A plurality of troughs arranged at the bottom between the circular side walls and movable along a circular movement path via guide wheels, and high temperature powder particles placed on these troughs. In a cooling device for high-temperature powder granules that is cooled by cooling air supplied from below the mounting surface, a wind box is formed in each of the troughs, and a movable side whose upper surface is opened along the moving path. An annular air duct is attached to the circular side wall side, and an annular water-sealing chamber having an upper surface opened on the inner and outer wall portions of the movable side annular air duct is provided.
A fixed-side annular air duct is provided to cover the opening of the movable-side annular air duct from above. Located below the water surface in the sealed chamber, the inner or outer circular side wall portion is provided with an opening communicating with each wind box corresponding to each trough, and this opening and the movable side annular air duct are formed. The air passages formed inside the fixed side annular air ducts corresponding to the supply and discharge parts of the powder and granules in the trough moving path are cut off over a predetermined section. And a first seal plate for narrowing the clearance between the air passage in the fixed-side annular air duct and the annular water-sealing chamber.
It is provided at the upper end of each side wall of the movable annular air duct corresponding to the lower end of each side wall of the stationary annular air duct, and is provided outside the lower ends of both side walls of the stationary annular air duct.
A cooling device for high-temperature powder particles, comprising a second seal plate for performing a labyrinth seal between the seal plate and the seal plate.