JPH072895U - Water-cooled class deck in sintering machine - Google Patents

Abstract

(57) [Summary] [Purpose] Improve the durability and repair / replacement time of the crush deck for supplying the primary crusher with the sinter from the slag discharge section of the sinter machine. [Structure] A plurality of water cooling jackets 14-1 to 14-14, in which the interior of the crash deck main body 14 is divided into a plurality of boxes, and the boxes are communicated by communication pipes 17-1 to 17-7 arranged on the deck slope side. Consists of -6. The respective water cooling jackets are continuously connected by connecting pipes 18-1 to 18-5, and the cooling water supplied under a predetermined pressure is supplied to the water cooling jackets from the bottom to the top to be discharged. The cooling water flowing through the water cooling jackets causes the deck body, the scraper liner 15 and the cap liner 1
6 has a structure in which it is cooled at the same time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to an improvement of the crash deck for supplying the primary ore crusher with the sinter ore falling from the pallet in the ore discharge part of the continuous sintering machine for continuously sintering iron ore and the like. is there.

[0002]

[Prior art]

 Conventionally, as this type of class deck, for example, the class deck described in Japanese Utility Model Publication No. 52-45614 is known. This crush deck is a movable type with a crush deck mounted on the trolley to facilitate repair and replacement work, and its structure is as shown in Fig. 4 between the sintering machine 1 and the primary crusher 2. A crush truck 4 is installed on a trolley 3 installed so that it can travel in a direction perpendicular to the direction of transfer of sinter, and can be carried out of the machine at any time by an appropriate drive device. The crash deck 4 has a scraper liner 5 on the top, and a cap liner 6 is attached to the slope. The scrap ore A that falls due to the tilting of the sintering machine pallet at the mine ore is a scraper liner. 5 and slides down the slope of the deck and is supplied to the primary crusher 2.

Since the above-mentioned crash deck is movable, it can be easily carried out of the machine at any time for repair or replacement work, and is extremely advantageous in reducing maintenance costs. There is.

[0004]

[Problems to be solved by the device]

 However, all the conventional ones, including the above-mentioned movable class decks, do not take measures to protect the class decks used under high temperature conditions from heat, so that the wear of the sintered ore due to the heat, Problems such as thermal fatigue occur. In addition, it is necessary to lower the temperature during repair and replacement work, but rapid cooling may damage the deck body, scraper liner, cap liner, etc., so it is necessary to gradually lower the temperature, and it takes a long time to cool it. There is a problem of cost.

The present invention has been made in order to solve such a conventional problem, and provides a water-cooled class deck capable of protecting the class deck from heat and reducing the time required for repair and replacement work. It is what

[0006]

[Means for Solving the Problems]

 According to this invention, in a crash deck having a scraper liner on the top and a cap liner on the slope, the crash deck body is composed of a plurality of water-cooled jackets and is especially affected by the heat of the sinter. The structure is such that the slope of the deck, which becomes hot at high temperature, is positively cooled, and at the same time, the scraper liner and cap liner are cooled. The water cooling jackets are divided into boxes and are connected to each other by communication pipes that are piped on the slope side of the deck.In addition, multiple water cooling jackets are installed side by side. Cooling water introduced from one end of the deck body flows from each bottom of the water cooling jacket in order from the bottom to the top, and is discharged from the other end of the deck body. And characterized in that without a circulating structure, further the bottom of Sukure Paraina and cap liners and it is characterized in that a member of high thermal conductivity.

[0007]

[Action]

 The cooling water to be supplied to the main body of the crash deck is supplied by applying a predetermined water pressure with a water supply pump or the like because the water inside each water cooling jacket flows from the bottom to the top. The cooling water supplied under a certain water pressure flows upward through the communication pipes that are piped on the slope side of the deck while filling the boxes of each water cooling jacket in order from the bottom, and then pipes from the top box. It is introduced into the lowermost box of the adjacent water cooling jacket, fills each box in order from the bottom, and flows upward. The cooling water flowing through each water cooling jacket in this way is discharged from the uppermost box of the water cooling jacket on the side opposite to the cooling water inlet side, is again introduced into the crash deck body via the water supply pump, etc., and is recycled. It

In this invention, the cooling water is applied with a predetermined pressure so that the inside of each water cooling jacket flows from the bottom to the top, and the communication pipes that connect the boxes of each water cooling jacket are connected to the deck slope. By arranging it on the side, the deck slope side, which is affected by the heat of the sinter and becomes high in temperature, is cooled more strongly than the main body, and wear of the scraper liner and cap liner is reduced. Moreover, for example, copper is suitable as the member having a high thermal conductivity provided below the scraper liner and the cap liner. This high thermal conductivity member cools the scraper liner and cap liner more effectively.

The structure of the water cooling jacket that constitutes the main body of the crash deck is not particularly limited, and is configured in consideration of strength etc. so that the portion directly affected by the heat of the sinter can be effectively water cooled. do it. The size of the water cooling jacket or the volume of the box filled with cooling water may be determined in consideration of economic efficiency and cooling effect.

Since the scraper liner attached to the top of the crash deck body and the cap liner attached to the slope of the deck are cooled by the water cooling jacket, wear and thermal fatigue due to contact of red-hot sinter ore Is reduced and cracking is prevented. In addition, the entire crash deck body is always cooled by cooling water, which not only reduces thermal fatigue due to sinter, but also significantly reduces the time required to lower the heat during deck repair and replacement. it can.

[0011]

【Example】

 FIG. 1 is a vertical sectional side view showing an example of a crash deck according to the present invention, FIG. 2 is a rear view of the same deck, and FIG. 3 shows an example in which a high thermal conductivity member is provided below a scraper liner and a cap liner. In the vertical side view of the crash deck, 14 is a crash deck main body, 15 is a scraper liner, 16 is a cap liner, 17-1 to 17-7 are communication pipes, 18-1 to 18-5 are water cooling jacket connection pipes, 19- Reference numeral 1 is a cooling water supply pipe, 19-2 is a cooling water discharge pipe, and 20 is a water supply pump.

The crash deck main body 14 has a plurality of (six in this case) whose front side, which is the falling slope of the sinter, is formed on a staircase and whose inside is partitioned into a plurality of boxes a to h from the bottom. The water cooling jackets 14-1 to 14-6 are arranged side by side and integrated, and a scraper liner 15 is attached to the uppermost stage and a plurality of cap liners 16 are attached to the slopes. The boxes a to h of each water cooling jacket are connected by communication pipes 17-1 to 17-7 arranged on the deck slope side, and the box h at the top and the box a at the bottom of each water cooling jacket are respectively connected to the back of the deck. The connection pipes 18-1 to 18-5 are connected to each other. The length of the communication pipe 17-1 is increased in order to strongly cool the deck slope side.

That is, in the crash deck main body 14, the cooling water supplied from the cooling water supply pipe 19-1 to one water cooling jacket 14-1 is connected to each water cooling jacket 14-1 to 14-6. 18-5 are sequentially supplied, and the other water cooling jacket 14-6 discharges the water through the cooling water discharge pipe 19-2 and circulates through the water supply pump 20.

In the class deck having the above structure, the cooling water is first supplied to the water cooling jacket 14-1 through the cooling water supply pipe 19-1 after a predetermined pressure is applied by the water supply pump 20. The cooling water supplied to the lowermost box a of the water cooling jacket 14-1 is filled in the box a and introduced into the adjacent box b 1 via the communication pipe 17-1. In this case, since the communication pipe 17-1 is made long, the cooling water discharged from the communication pipe strongly hits the front part and the ceiling part of the box b, and the part is strongly cooled. After that, the cooling water is supplied from the box b to the communication pipe 17-2 to the box c to the communication pipe 17 to the box d to the communication pipe 17 to the box e to the communication pipe 17 to the box f to the communication pipe 17 to the box g to the communication pipe. It flows in the order of 17-7 and reaches the uppermost box h. At that time, since all the communication pipes 17-1 to 17-7 for communicating between the boxes are provided on the deck slope side, the deck slope side is strongly cooled by the cooling water discharged from each communication pipe, and the scraper liner. 15 and cap liner 16 are effectively cooled.

The cooling water in the uppermost box h of the water cooling jacket 14-1 is introduced into the lowermost box a of the adjacent water cooling jacket 14-2 through the connecting pipe 18-1, and flows in the same manner as above. It is then cooled and introduced into the next water cooling jacket 14-3 via the connecting pipe 18-2. After that, the water flows through the water cooling jackets in the same order, is discharged from the cooling water discharge pipe 19-2, and is circulated in the crash deck body through the water supply pump 20.

Since the crash deck body is cooled by passing cooling water through the crash deck body to fill each jacket in this way, sinter ore falling from the palletizer sinter machine pallet will not be discharged. The effect of the heat of the sintered ore when the scraper liner 15 slides down the slope of the deck and is supplied to the primary crusher is greatly reduced, and at the same time, the cooling discharged from the communication pipe arranged on the slope side of the deck. Since the deck slope side is strongly cooled by water, the scraper liner 15 and the cap liner 16 that come into contact with the sinter are prevented from being worn or broken. In addition, the backside of the deck body near the sinter machine and the bottom of the deck body near the primary crusher are also cooled by cooling water, so thermal fatigue due to the high temperature atmosphere is reduced.

Further, as shown in FIG. 3, the scraper liner 15 is attached via the base plate 15-1 made of a material having a good thermal conductivity, and the cap liner 16 is also made of a pipe made of a material having a good thermal conductivity. When attached via the body 16-1, the scraper liner 15 and the cap liner 16 are cooled more effectively.

Although the example in which the crash deck main body is entirely cooled has been shown here, the entire cooling system can be used even if only the deck top and slopes that are most affected by the heat of the sinter are cooled. It is possible to obtain the same effect as.

[0019]

[Effects of the Invention] As described above, according to this invention, the crash deck is composed of a plurality of water cooling jackets, and the deck slope side, which is greatly affected by the heat of the sinter, is strongly cooled. As a result of the protection of the scraper liner and cap liner from the heat of the sinter, not only the thermal fatigue of the deck body is significantly reduced, but also the wear of the scraper liner and the cap liner that come into contact with the sinter in the hot state The amount is greatly reduced and the durability is improved. By the way, the result of applying it to the actual equipment on a trial basis showed that the life of the scraper liner and cap liner was extended to about one month, which was about 6 months, which was about twice as long. Was confirmed.

In addition, when repairing or replacing a crash deck, it took a long time to cool the deck in the past, but in this invention, since the deck body has a water cooling structure, the cooling time is significantly increased. This has the effect of shortening and simplifying and speeding up the repair and replacement of the crash deck.

Therefore, according to the present invention, the repair cost can be reduced due to the effect of improving the durability of the crash deck main body, the scraper liner, and the cap liner, and the repair and replacement work of the crash deck can be easily performed. The speeding up has a great effect on improving the operating rates of the sintering machine and the primary crusher.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an example of the overall structure of a crash deck according to the present invention.

FIG. 2 is a rear view of the same deck.

FIG. 3 is a vertical cross-sectional side view of a crash deck showing an example in which a member having a high thermal conductivity is provided below a scraper liner and a cap liner.

FIG. 4 is a vertical cross-sectional side view showing an example of a conventional class deck.

[Explanation of symbols]

 1 Sintering machine 2 Primary crusher 14 Crash deck body 14-1 to 14-6 Water cooling jacket 15 Scraper liner 16 Cap liner 17-1 to 17-7 Communication pipe 18-1 to 18-5 Water cooling jacket connection pipe 19-1 Cooling Water supply pipe 19-2 Cooling water discharge pipe 20 Water supply pump

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Koji Iijima, 3rd light, Oshima, Kashima-machi, Kashima-gun, Ibaraki Prefecture Sumitomo Metal Industries, Ltd. Kashima Steel Works (72) Kazuo Sunouchi, 3rd light, Oshima, Kashima-machi, Kashima-gun, Ibaraki Prefecture Sumitomo Metal Industries, Ltd. Kashima Steel Works

Claims (2)

[Scope of utility model registration request] 1. A crush deck comprising a scraper liner on the top of the sinter machine and a scraper liner on the top and a cap liner on the slope, and the inside of the crush deck is partitioned into a plurality of boxes. The box is constructed by arranging multiple water-cooling jackets in parallel with each other by connecting pipes connected to the deck slope side, and each water-cooling jacket is continuously connected by pipes and introduced from one end of the deck body. A water-cooled class deck in a sintering machine, characterized in that the cooling water sequentially flows through each water-cooling jacket from the lower side to the upper side, is discharged from the other end of the deck body, and is circulated. 2. The water-cooled class deck in a sintering machine according to claim 1, wherein a member having a high thermal conductivity is provided below the scraper liner and the cap liner.