JPH0633357Y2 - Hot crushing device for deposits on furnace wall - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a hot crushing device for furnace wall deposits adhered to the surface of a high temperature furnace wall refractory.

[Conventional technology]

When part of the high temperature furnace wall refractory is disassembled, or when deposits on the surface of the furnace wall refractory are removed to expose a healthy part of the refractory and spray repair is performed, i) crushing with a firearm ii) Explosion by explosives iii) Peeling and melting of deposits on the furnace wall utilizing changes in temperature and atmosphere due to changes in the operating method of the furnace. Iv) Crushing with a lifting device.

FIG. 5 is an explanatory view of an example of crushing with the firearm of i) above.
A bullet (28) fired from a firearm (29) through an opening (18) provided in the upper part of the furnace causes a deposit (1) on the surface of the furnace wall refractory (15).
It is shown that 6) is crushed and removed.

FIG. 6 is an explanatory diagram of an example of blasting by explosive of ii) above,
(A) In the figure, the situation in which the explosive charge (21) is loaded into the explosive charge hole (20) that penetrates the furnace shell (19) and furnace wall refractory (15) from the outside of the furnace and reaches the deposit (16) is shown. In addition, Fig. (B) shows the situation in which the deposit (16) on the surface of the furnace wall refractory (15) has been removed by the explosion of the explosive (21).

Further, FIG. 7 is an explanatory view of an example of crushing by the chipping device of the above iv). In FIG. 7 (a), the striking rod (24) of the striking device (23) attached to the work carriage (22) is located on the furnace side. Inserted through the opening (18) provided in the section, and the deposit (16) on the surface of the furnace wall refractory (15) is crushed and removed by the vibration impact of the impact rod (24) in the direction indicated by the arrow a. The situation is shown. The striking rod (24) is configured to be movable up and down as shown by an arrow b by a hydraulic mechanism or the like, and has a tip end only for hanging (25).
Is attached. (B) In the figure, the striking device (23) is attached to the rotatably provided strut (26), and the striking rod (24) is inserted through the opening (18) provided in the upper part of the furnace. Shows that the deposit (16) is removed by. The mounting portion (27) of the striking device (23) to the column (26) is movable up and down, and the striking rod (24) is movable in the direction of arrow b as in the case of FIG. ing.

[Problems to be solved by the device]

However, the above-mentioned conventional means for removing the deposits on the surface of the refractory wall of the furnace wall has the following problems. That is, in the case of crushing with a firearm of i), it is necessary to use a special device called a firearm, it is difficult to accurately remove deposits, and it is also necessary to take safety measures against severely scattered fragments. In the case of ii) explosive blasting, a high degree of expertise is required, and as in the case of i), it is difficult to accurately remove a certain range of deposits.
Safety measures for scattered materials are also necessary. The removal of iii) utilizing changes in temperature and atmosphere due to changes in the operating method of the furnace has a limited application range and its effect is insufficient. Also i
In the case of crushing with a chipping device in v), above i) to iii)
Although it is advantageous in that it is possible to crush any part accurately compared to the above, all the devices used are large-scale, and are special devices in consideration of heat resistance and versatility, resulting in high cost.

An object of the present invention is to solve the above problems and to provide a device for crushing and removing high temperature furnace wall deposits in that state, that is, while hot.

[Means for Solving the Problems]

As a result of various studies to solve the above problems, the present inventors have
It was confirmed that the deposit on the furnace wall could be removed hot by using a simple chipping device consisting of a crushing part and a supporting part.
That is, the present invention has metal fittings for suspending suspending materials such as wires and chains, and can be expanded and contracted by appropriately changing the number of a plurality of hollow cylindrical supporting rods, and its internal space can be compressed air or compressed nitrogen. And a support part that became a passage of
The present invention relates to a hot crushing device for a deposit on a furnace wall, which is installed at the tip of the supporting portion and is driven by compressed air or compressed nitrogen supplied through the passage.

[Action]

Since the supporting part of the hot crushing device of the present invention having the above-mentioned structure is expandable, its length can be arbitrarily set according to the size and shape of the furnace in which the deposits to be removed are present. . Further, the tip of the crushing portion can be brought into contact with the intended place by suspending it with a wire or the like and pulling it further from the side to adjust it if necessary. In addition, since the internal space of the support portion of the device serves as a passage for compressed air or compressed nitrogen,
By sending compressed air or compressed nitrogen through the passage, mechanical strength does not decrease even in a high temperature atmosphere, and the crushing portion can be supported.

Since general-purpose chipping equipment can be attached to the crushing section, no special equipment is required. Since the power source for driving the crushing section is compressed air or compressed nitrogen supplied through the support section, it is also possible to cool the crushing section by exhausting it. A heat insulating cover is usually attached to the crushing section to prevent the chipping equipment and the like from directly receiving radiant heat.

〔Example〕

 Hereinafter, description will be made based on examples.

FIG. 1 is an explanatory view showing the constitution of an example of a hot crushing apparatus for the furnace wall deposits of the present invention. In the figure, (31), (32), (3
3) and (34) are hollow-cylindrical supporting rods that constitute the supporting portion (1), each rod has connecting flanges (4) at both ends, and is also used for suspending suspension materials such as wires and chains. Suspended metal fittings (5) are attached. The support rods (31), (3
2), (33) and (34) are not limited to the hollow cylindrical shape described above as long as they have a shape having a passage for the cooling medium. Further, (2) is a crusher, which holds the crusher (6) and the crusher (6) and attaches the crusher to the tip of the support (1), and the crusher attachment (7). It comprises a heat insulating cover (8) attached to the tool (7), and the support part (1) and the crushing part (2) constitute the hot crushing device of the present invention.

FIG. 2 is an explanatory view showing an example of the structure of the supporting portion, and
Corresponding to the supporting portion (1) in the figure, (a) is a sectional view, (b), (c) and (d) are corresponding to A, B and C of (a) respectively. It is a perspective view of the part to do. In the figure (a), the four supporting rods (31), (32), (33), (34) constituting the supporting portion are shown in (b), (c) and (d), respectively. Thus, the connection flanges (4) are provided at both ends, and the connection flanges (4) are used for connection. The supporting rods (31) and (34) are of the same shape and have a port for supplying or discharging compressed air or the like at one end, and this port is used as a discharge port (9 ),
When used in the C section, it serves as the supply port (10). Further, the supporting rods (32) and (33) have the same shape, and the length of the supporting portion can be arbitrarily set by connecting a large number of rods having this shape. In addition, each rod (31), (32), (33),
Both (34) have a suspending metal (5) for suspending the wire.

FIG. 3 is an explanatory view showing an example of the structure of the crushing section, (a) is a sectional view of the whole crushing section, (b) is a perspective view of the crusher attachment,
(C) The figure is a perspective view of the heat insulating cover. In the figure (a), the crusher fitting (7) is attached to the supporting rod (31) which constitutes the supporting portion, and the crusher (6) and (c) are shown in the fitting (7). The heat shield cover (8) is attached. Crusher fittings (7)
As shown in (b), the support rods (3
Holes (11) and (12) for inserting the discharge port (9) of 1) are provided, and the example shown in (a) is a case where the hole (11) is used to attach to the support part. . Holes (12) as needed, as described below
May be used. (A) In the figure, the connecting pipe (13) connecting the discharge port (9) of the supporting rod (31) and the crusher (6) has a crusher (6) using the compressed air passing through the passage as a power source. It is a pipe for introducing into the crusher, and the crusher (6) is cooled by its exhaust, and is discharged from the hole (12) of the fixture (7) as shown by the arrow.

The power source is not limited to the compressed air described above, but compressed nitrogen may be used. If the temperature inside the furnace is relatively low, an electric crusher should be used, and electricity should be supplied by a conductor inserted in the passage. Is also possible.

As the crusher (6), it is possible to use a general-purpose device such as a chipping device that utilizes the force of vibration or impact and a disassembly tool that utilizes rotation.

FIG. 4 is an explanatory view showing an example of crushing the material adhered to the furnace wall by the hot crushing device of the present invention, and FIG. 4 (a) shows the crusher shown in FIG. When it is attached to the side surface of the fixture (7), (b) is the case where it is attached to the upper surface. (A) In the figure, insert the crushing device adjusted to an appropriate length into the furnace from the side opening of the furnace wall, and hang it with the hanging wire (14) through the hanging metal fitting (5) to crush the machine ( The tip of 6) is brought into contact with the deposit (16) on the surface of the furnace wall refractory (15). Then, compressed air, which is a cooling medium and a power source of the crusher (6), is fed from a gas feed pipe (17) attached to a supply port (Fig. 2 (10)) at the tip of the supporting portion, The kimono (16) is crushed and removed. In the figure (b), the crusher equipped with the suspension wire (14) is inserted into the furnace through the upper opening of the furnace wall, and the suspension wire (14) is drawn from the side opening of the furnace wall to pull the crusher. Adjust the tip of (6) so that it contacts the deposit (16), and crush the deposit (16) by sending compressed air through the gas passage pipe (17) as in the case shown in (a). ,Remove.

When the crushing device of the present invention was used for hot removal of the deposits on the furnace wall of the blast furnace, a safer and better removal effect was obtained compared to the removal using conventional explosives. The applicable range is not limited to the blast furnace, and can be used in a wide variety of furnaces such as a converter, a torpedo car, and the like.

[Effect of device]

As described above, the apparatus for hot crushing the deposits on the furnace wall of the present invention has an extremely simple structure including the supporting portion that can expand and contract according to the shape of the furnace and the crushing portion attached to the supporting portion. Therefore, the cost is lower than that of the conventional crushing device, and the safety is higher than the means for crushing and removing the deposits on the furnace wall by a firearm or blast, and the practical value is extremely large.

[Brief description of drawings]

1 to 3 are explanatory views showing the constitution of an example of the device of the present invention, FIG. 1 is an overall constitution diagram, FIG. 2 is a constitution diagram of a supporting portion,
FIG. 3 is a block diagram of the crushing section, FIG. 4 is an explanatory view showing an example of crushing of the deposit on the furnace wall by the device of the present invention, and FIGS. 5 to 7 are crushing of the deposit on the furnace wall by the conventional device. FIG. 5 shows the case of using a firearm, FIG. 6 shows the case of using gunpowder, and FIG. 7 shows the case of using a lifting device. 1 ... Supporting part, 2 ... Crushing part 31,32, 33, 34 ... Supporting rod, 4 ... Connection flange, 5 ... Suspension metal fitting 6 ... Crusher, 7 ... Crusher attachment 8 ... … Heat-proof cover, 9 …… Discharge port 10 …… Supply port, 11,12 …… Hole 13 …… Connection pipe, 14 …… Suspended wire 15 …… Firewall refractory, 16 …… Adhered matter 17 …… Gas transfer Pipe, 18 …… Opening 19 …… Furnace shell, 20 …… Explosive filling port 21 …… Explosive, 22 …… Work trolley 23 …… Impact device, 24 …… Impact rod 25 …… only, 26 …… Support 27 …… Mounting part, 28 …… Bullet 29 …… Firearm

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Miaki Hiromi 1850 Minato, Wakayama City, Wakayama Sumitomo Metal Industries, Ltd. Wakayama Works (56) References JP59-64707 (JP, A) 62-88298 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A suspending member hanging metal fitting, which can be expanded and contracted by appropriately changing the number of a plurality of hollow cylindrical supporting rods, and whose internal space serves as a passage for compressed air or compressed nitrogen. Installed on the support part, and the tip of the support part,
A hot crushing device for a furnace wall deposit, comprising a crushing unit driven by compressed air or compressed nitrogen supplied through the passage.