JPS6033810A - Cooling device for slab - Google Patents

Abstract

PURPOSE:To obtain a device capable of cooling always a slab in the highest efficiency without regard for its width dimension and simplifying its piping by providing spraying nozzles to plural cooling pipes arranged parallelly to the moving direction of slab and located above the moving path of slab and making the mutual distances of nozzles in the width direction of slab and the heights of them steplessly variable. CONSTITUTION:A vertically moving frame 4 is supported by four jacks 3 on the upper surface of a frame 2 located above the moving path of a slab 1 which moves in the A direction, and is moved vertically by rotating normally or reversely a handle 24 or a motor 7. Feeding screws 5, 6 having each horizontal axial line perpendicular to the direction A are supported on the frame 4 and are rotated in the mutually reverse directions by the motor 7. In this way, cooling pipes 13, 14 directed to the direction A and supported by supporting members 11A and 12B, 11B and 12A which are screwedly engaged with left and right handed screwed parts 5A, 6A, 5B, 6B are brought close to or away from each other. Cooling water is sent from a main pipe 25 to pipes 13, 14 through a cooling water pipe 15 directed to the direction A and fixed to the frme 4 located above the central parts of the screws 5, 6 and a freely rotatable and reverse L-shaped pipe. Thus, the heights and mutual distances of spraying nozzles 16-18 attached to pipes 13-15 in the ratio of three to one can be steplessly changed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling device for slabs that cools slabs produced by continuous casting by spraying cooling water.

The slab cooling device in conventional continuous casting equipment is
As shown in the schematic front view in the figure, one header pipe a whose axis is perpendicular to the direction of movement of the slab 1 is provided above the slab movement path.

A spray nozzle b is installed in each of a plurality of branch pipes a' provided at predetermined intervals in the axial direction of the header pipe a. The structure was such that each pipe was connected to a separate cooling water pipe d.

However, in conventional devices with such a structure.

It requires a large number of nozzles and automatic valves, the piping system is complicated, there are many maintenance problems, and it is not possible to change the cooling width steplessly according to the slab width, resulting in poor cooling efficiency. It was problematic and uneconomical.

This invention provides a cooling device for slabs that eliminates all of the above-mentioned problems.

A plurality of cooling water pipes are arranged above the moving path of the slab in parallel with the direction of movement of the slab, a plurality of spray nozzles are attached downward to each of the cooling water pipes, and mutual intervals between the cooling water pipes are arranged. It is equipped with a stepless interval adjustment mechanism for adjusting the sump and a stepless height adjustment mechanism for the sump for adjusting the height of the cooling water pipe from the slab. The present invention is characterized in that the spray area is made variable by changing the arrangement interval of the cooling water pipes in the width direction of the slab and the height from the slab.

Next, the apparatus of the present invention will be explained with reference to the drawings.

FIG. 2 shows a perspective view of an embodiment of the device of the present invention, and FIG. 3 shows an operational diagram.

As shown in Figure 2, the slab l moving in the direction of the arrow
On the top frame 2 provided on both sides, there are 4
An elevating frame 4 is supported by two jacks 3 so as to be movable up and down.

The elevating frame 4 rotatably supports two feed screws 5.6 whose axial directions are horizontal directions perpendicular to the moving direction A of the slab 1.

The feed screws 5 and 6 are rotated in opposite directions by the drive of the motor 7 via an intermediate shaft 10 connected to an output shaft 8A of a reducer connected to the motor 7 by a universal joint 9.

The feed screw 5.6 has right-handed threaded portions 5A, 6A and left-handed threaded portions 5B, 6B, respectively, and has a right-handed threaded portion 5A and a left-handed threaded portion 6B-, which face each other, and a left-handed threaded portion 5B and a right-handed threaded portion 6A. To,
Nut-shaped support members 11A and 12B and IIB and 12A are screwed together, respectively. - The support members 11A and 12B and IIB and 12A support the cooling water pipes 13 and 14, which are arranged parallel to the moving direction of the slab 1, respectively.

On the other hand, a fixed cooling water pipe 15 parallel to the cooling water pipes 13 and 14 is fixed on the lifting frame 4 above the center portion in the length direction of the feed screws 5 and 6.

In cooling water pipes 13, 14 and fixed cooling water pipes 15.

Three spray nozzles 16, 17° 18 are mounted downward in a staggered arrangement in the tube axis direction, respectively.

The jacks 3 each include a worm gear 22 and a rack 23, and the worm gear 22 is connected to another output shaft 8B of the reducer 8.
A rank 23 is attached to a series of shafts 21 connected to an output shaft 2OA of a clutch 20 connected via a connecting shaft 19 and a worm gear 22, and a rank 23 is connected to the elevating frame 4. 24, when clutch 2o is turned off.

This handle is used to manually rotate the output 1FI 1120A and drive the elevating frame 4.

The water supply system to the cooling water pipes 13 and 14 and the fixed cooling water pipe 15 is a rotatable reverse type water pipe 26 that connects the water supply main pipe 25 to the fixed cooling water pipe 15 and is attached to the fixed cooling water pipe 15 side. The rotatable inverted water pipe 27 attached to the cooling water pipe 13 side is connected with the rotary joint, while the rotatable inverted water pipe 29 attached to the fixed cooling water pipe 15 side is connected to the cooling water pipe 14 side. The cooling water from the main water supply pipe 25 is transferred to each spray nozzle 16. l'i', lsK
It is a structure that supplies

As mentioned above, the device of this invention has cooling water pipes 13 and 14.
．． 15, and a stepless height adjustment mechanism for adjusting the height of the cooling water pipes 13, 14, and 15 from the slab l. When the motor 7 is rotated forward or reverse, the feed screw 5,
6 rotates forward or reverse, supporting members 11A and 12B
The cooling water pipe 13 supported by the support member 11B, 1
The cooling water pipes 14 supported by 2A move away from each other or toward each other.

At this time, if clutch 2o is turned on.

At the same time, the shaft system 21 rotates forward or reverse, and the worm gear 22
rotates forward or reverse and passes through the rack 23.

The lifting frame 4 is raised or lowered, and the cooling water pipe 13.
14. Spray nozzles 16,1 provided in each of 15
7. The height of the slab I8 can be adjusted steplessly.

Furthermore, when the clutch 20 is turned off, torque transmission from the motor 7 to the shaft system 21 is cut off.

Therefore, by operating the handle 24, the height of the elevating frame 4 can be finely adjusted by manually rotating the worm gear 22 in the forward or reverse direction.

In this way, the cooling water pipe 1 is adjusted to correspond to the width of the slab 1.
By adjusting the positions of 3 and 14 and further adjusting the height of the lifting frame 4, the most efficient cooling of the slab 1 can be achieved.

In other words, as shown in the explanatory diagram in FIG. , and the elevating frame 4 is placed in the lowest position and the spray nozzles 16, 17° 18 are placed in the lowest position closest to the slab 1. Water is poured into the slab l without wasting it.

If the slab width is the maximum width m3, put the cooling water pipes 13 and 14 in the positions ■ and ■, respectively, and at the same time turn the spray nozzle 1
There are 18 groups of spray nozzles (three in this example), with the highest height position being 6, 17, and 18.

4 rows of staggered arrangement) in the center of slab 1.

Cooling water is also poured into the right-hand side of the diagram by the 16 group of spray nozzles, and further into the colored soil and the left-hand side by the 17 group of spray nozzles.

If the slab width is the intermediate width m2, the cooling water pipe 13°14
Place them in the ■ and ■ positions, respectively, and at the same time spray
6, 17, and 18 are placed at an intermediate height, and in this case as well, the 18 group of spray nozzles is used to spray the central part of the slab l, the 16 group of spray nozzles is used to spray the material on the right side of the diagram, and the 17 group of spray nozzles is used to spray the material on the right side of the diagram. Pour cooling water into the left side of the diagram.

As is clear from the above description, the device of the present invention uses a group of spray nozzles attached to each of the fixed central cooling water pipe and the adjustable cooling water pipes on the left and right sides, so that it can always be used regardless of the slab width. It provides excellent cooling efficiency, simple piping, and extremely easy operation and maintenance.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a conventional device, FIG. 2 is a partially omitted perspective view of an embodiment of the device of the present invention, and FIG. 3 is an explanatory diagram of the operation of the device of the present invention. In the drawing. l... Slab 2... Top frame 3... Jacket 4... Lifting frame 5.6... Feed screw 5A, 6
A... Right-hand threaded part 5B, 6B... Left-hand threaded part 7... Motor 1.1A, l], B, 12A, 12B... Support member work 3, 1.4... Cooling water pipe 15... Fixed cooling water pipes 16, 17, 18...Spray nozzle 22...Worm gear 23...Rank 24/Handle 25...Water main applicant Nippon Koukan Co., Ltd. Applicant Fukuyama Kyodo Kiko Co., Ltd. Kimo Oshiiri Left side ki Cji h2. i)

Claims (1)

[Scope of Claims] A plurality of cooling water pipes arranged above the moving path of the slab in parallel with the moving direction of the slab, a plurality of spray nozzles attached downward to each of the cooling water pipes, and the cooling A stepless interval adjustment mechanism for adjusting the mutual spacing of the water pipes, and a stepless height adjustment mechanism for adjusting the height of the cooling water pipe from the slab, and Spray area of cooling water according to the cooling water pipe. A slab cooling device characterized in that the cooling device is variable by changing the arrangement interval in the width direction of the slab and the height from the slab.