JPH0236871B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a support device for attaching and detaching a blowing pipe for repairing a metallurgical furnace. More specifically, the present invention relates to a support device for a spray pipe for repairing a refractory lining material of a metallurgical furnace such as a converter or an electric furnace, which is compact as a whole and has a detachable structure.

Prior Art The spraying repair of monolithic refractories for steelmaking converters, electric furnaces, etc. has been carried out in the following manner.

(1) A manual spraying method in which the spraying worker inserts the spray pipe into the furnace.

(2) An automatic spraying method in which spraying is performed remotely using an automatic spraying device equipped with a spray pipe with water cooling and an expandable mechanism.

However, the manual repair work in (1) requires heavy labor in a high-temperature environment where the worker inserts a long, heavy spray pipe into a high-temperature furnace and sprays.

In method (2), the device is mainly attached to a self-propelled trolley, and the spray pipe is water-cooled and equipped with a telescoping mechanism, allowing spraying to be performed by remote control. However, the device is large, has a complicated mechanism, and is expensive.

Problems to be Solved by the Invention The above-mentioned conventional automatic spraying device has a complicated mechanism and its manufacturing cost is high.

In particular, even though the spray pipe is equipped with a telescoping mechanism,
Even in its retracted state, the overall length is still long, and handling, driving, and operation, especially in confined spaces, are complex and require skill. Furthermore, a large area is required to store the device while it is on standby.

Furthermore, since the spray pipe is built into the water-cooled pipe, it often requires replacement, which is a lengthy process, due to wear and bending due to heat, and its maintenance and maintenance are also difficult.

Therefore, it is an object of the present invention to solve the above-mentioned problems of the prior art, and more specifically to use a blowing pipe with a simple structure, such as a blowing pipe commonly used in manual spray repair. An object of the present invention is to provide a supporting device for a blowing pipe for repairing a metallurgical furnace, which is easy to use and has a simple structure.

A further object of the present invention is that the spray pipe is removable from the device, so that the spray pipe can be attached to the device at the start of spraying work, the spraying work can be performed remotely, and the used spray pipe can be removed from the device when the spraying work is finished. It is an object of the present invention to provide a compact supporting device for a blowing pipe for repairing a metallurgical furnace, which is constructed as follows.

Means for Solving the Problems In order to achieve the above-mentioned object of the present invention, the present inventor has completed the present invention as a result of various studies.

The support device for a blowing pipe for repairing a metallurgical furnace provided by the present invention includes a boom stand, a support column rotatably supported on the boom stand, and a support column rotatably supported at the upper end of the support column via a pin. a retractable cylinder having one end connected to the support stand at a position different from the pin and the other end connected to the lower part of the support column, and a telescopic cylinder supported by the support stand via an arm. A pair of receiving rollers, a motor fixed to the support base, a shaft rotation drive roller rotationally driven by the motor, and a shaft rotation drive roller rotatably supported on the shaft rotation drive roller and at both axial ends. It consists of a rotating drum with an open side, a pair of pinch rollers supported by the rotating drum on the opposite side of the receiving roller via a support plate, and a motor that rotationally drives one of the pinch rollers. , the other of the pinch rollers and one of the receiving rollers are of a flip-up type, and a part of the circumferential direction of the rotating drum can be opened, and the one of the receiving rollers and the other pinch roller are With a portion of the rotating drum open, the metallurgical furnace repair spray pipe used for manual spray repair is placed in a relative position so that it can be placed on one of the pinch rollers and the other receiving roller. It is characterized by being familiar.

According to a preferred embodiment of the present invention, the drive roller for shaft rotation is constituted by a roller disposed in close contact with the rotating drum so as to have an axis parallel to the axis of the spray pipe.

The spray pipe used in the repair spray pipe support device of the present invention may be one that is normally used in manual repair spraying work.

Further, the support device for a repair spray pipe of the present invention may be moved by a forklift or mounted on a moving pallet, or may be of a self-propelled type or a type suspended by a crane or the like.

Function In the support device for a blowpipe for metallurgical furnace repair of the present invention, the blowpipe is detachable from the main body of the device, and after installation, the blowpipe can be moved forward and backward in the axial direction of the blowpipe.
Automatically controls forward and reverse rotation around the spray pipe axis, as well as tilting the spray pipe. In this way, the position of the nozzle at the tip of the spray pipe can be automatically changed, and the spray direction can also be automatically changed.

Further, the driving pinch roller that moves the spray pipe in the axial direction is configured such that one side is removable and is, for example, a flip-up type pinch roller. Therefore, the entire device has a simple structure and is miniaturized.

The invention will now be explained in more detail by the description of embodiments with reference to the accompanying drawings.

Embodiment FIGS. 1 and 2 are a side view and a partially sectional rear view, respectively, of an embodiment of a support device for a blowpipe for repairing a metallurgical furnace according to the present invention.

This spray device is shown with a spray pipe 1 installed. As shown, the blow pipe 1 is connected to a mixer 5 via a swivel joint 3. A material supply hose 7 and a water supply hose 9 are connected to the mixer 5, and water and a refractory material for repair are mixed within the mixer 5. The amount of water supplied into the mixer 5 is regulated by a valve 11.

The spraying device has a support base 21 having a pair of pinch rollers 13, 15 and receiving rollers 17, 19. Among these rollers, the upper pinch roller 13 and the receiving roller 17 are of a flip-up type, and have a structure in which they are flipped up when the spray pipe 1 is attached or removed.

The lower, ie, fixed side pinch roller 15 is driven by a motor and mounted on the support plate 23.
On the other hand, the support plate 23 is fixed to the rotating drum 25 and is configured to rotate together with the rotating drum 25.

A top open type cover 27 is attached to the support base 21, and a rotating drum 25 is housed inside. As shown in FIG.
It is supported by drive rollers 29 for shaft rotation, and is rotationally driven while being pressed by a presser roller 31 that cooperates with the rollers 29. The rotation drive roller 29 is rotationally driven by a motor (not shown) via a gear 33.

Furthermore, a circumferential portion 25 of the rotating drum 25
When a is flipped up, that part is opened and the blowing pipe 1 is housed in the rotating drum 25, and when it is closed, a cylindrical drum with a smooth outer surface is formed.

As shown in FIG.
extends forward, and the distal end, that is, the fixed side receiving roller 19 is supported by this arm 37 . A flip-up type receiving roller 17 is arranged above the fixed side receiving roller 19, and cooperates with the receiving roller 19 to sandwich the spray pipe 1.

The support stand 21 is pivotally supported by a support column 41 via a pin 39. Further, the support stand 21 is supported by the other end of an electric cylinder 43 whose one end is connected to the support column 41. Therefore, as the electric cylinder 43 expands and contracts, the support base 21 tilts about the pin 39.

The support column 41 is vertically and rotatably supported on a boom base 45 and is provided with a worm wheel 47 . The worm wheel 47 is configured to mesh with a worm 49 that is rotationally driven, and when the worm 49 is rotationally driven, the support column 41 pivots.

The operation of the supporting device for a blowing pipe for repairing a metallurgical furnace according to the present invention described above will be explained.

To install the spray pipe, first flip up the upper pinch roller 13, the flip-up plate 25a of the rotating drum, and the receiving roller 17. In this state, the spray pipe 1 is inserted into the open rotating drum 25 of the open-top cover and set on the pinch roller 15 and the receiving roller 19. Next, lower the upper pinch roller 13 and receiving roller 17,
The spray pipe 1 is held between the lower pinch roller 15 and the receiving roller 19, respectively, and the rotating drum flip-up plate 25a is closed.

To remove the spray pipe, flip up the rotating drum flip-up plate 25a, then flip up the upper pinch roller 13 and the receiving roller 17 to open the entire upper part of the spray pipe, and take it out from the open part of the drum.

The axial movement of the spray pipe 1 is carried out by the pinch roller 1.
This is done by rotationally driving 5. That is, the pinch roller 15 is the upper pinch roller 13
Pinch roller 1 works together to pinch the spray pipe.
5 is rotated, the blowing pipe 1 moves forward or backward in the direction of rotation.

The rotation of the spray pipe 1 about its axis can be performed by driving a drive roller 29 for rotating the axis. That is, when the shaft rotation drive roller 29 is rotationally driven, the rotating drum 25 is rotated. Support plate 23 that supports pinch rollers 13 and 15
Since it is fixed to the rotating drum 25, it rotates together with the rotating drum 25. Therefore, the spray pipe 1 held between the pinch rollers 13 and 15 rotates. In this way, the spray nozzle 51 provided at the tip of the spray pipe 1 rotates.

Furthermore, the spray pipe 1 is tiltable about the pin 39. This can be realized by tilting the support base 21 by driving the electric cylinder 43 to extend and contract.

Furthermore, the spray pipe 1 can be rotated around the support column 41 by means of the worm gear mechanisms 47 and 49. That is, when the worm 49 is rotationally driven,
The support column 41 to which the worm wheel 47 that meshes with the worm 49 is attached rotates, thereby causing the spray pipe 1 to rotate.

In addition, the fixed side pinch roller 15 and the drive roller 2
9. Of course, the electric cylinder 43 and the worm 49 can be controlled remotely.

Effects of the Invention As explained above, the support device for a spray pipe for repairing a metallurgical furnace of the present invention removably attaches a spray pipe for spraying refractory material, and allows the spray pipe to move in the axial direction, rotate about the axis, and It is also possible to tilt and swivel with a simple structure. In particular, the blow pipe may be a blow pipe commonly used in conventional manual repair work, has a simple structure, and does not require extra equipment costs.

The support device for a blowout pipe for metallurgical furnace repair of the present invention has a compact structure and can be moved by a forklift, or may be self-propelled by attaching wheels to the support base, or can be suspended by an overhead crane. You may move it.

Further, the support device for a blowing pipe for repairing metallurgical furnaces according to the present invention can be used for repairing refining furnaces such as converters and electric furnaces, and can also be used for repairing refractory linings of various steel receiving and refining pots.

[Brief explanation of drawings]

FIG. 1 is a view showing one embodiment of the support device for a blowing pipe for repairing metallurgical furnaces of the present invention, the left half of which shows a side view, and the right half of which shows a partially sectional rear view. . (Main reference number), 1...Blowout pipe, 3...
Swivel joint, 5...Mixer, 13,
15... Pinch roller for forward and backward movement, 17, 19...
... Reception roller, 21 ... Support stand, 23 ... Support plate, 25 ... Rotating drum, 29 ... Shaft rotation drive roller, 31 ... Press roller, 39 ... Pivot pin, 41 ... Support column, 43...Electric cylinder, 4
5...Boom stand, 47...Worm wheel, 4
9... Worm, 51... Spray nozzle.

Claims (1)

[Claims] 1. A boom base 45, a support column 41 rotatably supported on the boom base, a support base 21 tiltably supported on the upper end of the support column 41 via a pin 39, and one end of which is supported by the pin 39. a retractable cylinder 43 connected to the support stand 21 at a position different from that of the cylinder 39 and whose other end is connected to the lower part of the support column;
, a pair of receiving rollers 17 and 19 supported by the support stand 21 via the arm 37, and the support stand 21.
a motor fixed to the motor; a shaft-rotating drive roller 29 rotationally driven by the motor; and a rotating drum 25 rotatably supported on the shaft-rotating drive roller and having both axial ends open. Support plate 2
A pair of pinch rollers 1 supported by a rotating drum on the opposite side of the receiving rollers 17 and 19 via 3.
3, 15, and a motor that rotationally drives one of the pinch rollers 15, and the other pinch roller 13 and one of the receiving rollers 1.
7 is of a flip-up type, and a circumferential portion 25a of the rotating drum can be opened.
One of the receiving rollers 17 and the other pinch roller 13 are arranged so that when a part of the rotating drum 25a is open, the spray pipe 1 for metallurgical furnace repair used in manual spray repair is attached to the one pinch roller. 15 and the other receiving roller 19.