JPS6231839Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a repair device used for repairing melt flow ports of various furnace bodies.

[Conventional technology]

Conventionally, as one form of such repair equipment,
As described in Publication No. 52-27901, a perforated formwork is attached to the outer surface of the pouring pipe for pouring refractories, and the refractory is poured through the holes of the perforated formwork to repair the flow opening. There are things that can be attached to the wall.

[Problem that the invention attempts to solve]

However, in the above repair equipment, the perforated formwork is simply attached to the outer circumferential surface of the spout pipe, so when taking out the spout pipe from the flow port after construction, it may be difficult to remove the pipe if the viscosity of the refractory is high. The perforated formwork also moved with the pouring pipe, making it difficult to pull out the pouring pipe, and peeling occurred on the repaired wall surface of the tap hole, weakening the adhesive strength.

An object of the present invention is to provide a repair device that can solve the above problems.

[Means for solving problems]

In order to solve the above-mentioned problems, the furnace body molten material distribution port repair device of the present invention includes a pouring pipe that can freely go in and out of the furnace body's molten material distribution port, and a pipe support that supports the pouring pipe so that it can move forward and backward. a mechanism, a perforated formwork mounted on the peripheral surface of the pouring pipe, and a perforated formwork that presses an end surface of the perforated formwork against an opening wall of a melt flow port attached to the pipe support mechanism. A pressing device is provided.

〔Example〕

Hereinafter, means for solving the above problems will be specifically explained based on the embodiments shown in the accompanying drawings.

In FIG. 1, 1 is a converter, and 2 is a tapping port of the converter 1.

The repair device 3 according to the present invention is arranged in front of the tap hole 2.

1 and 2, numerals 4 to 15 constitute the repair device 3, numeral 4 denotes a pouring pipe that can move forward and backward and rotate freely within the tap hole 2, and numeral 5 denotes a pouring pipe 4.
A pouring nozzle formed at the tip of the pouring pipe 4, 6 a perforated form made of cylindrical punching metal etc. attached to the outer peripheral surface of the pouring pipe 4, 7 a movable cart equipped with the pouring pipe 4 and attached equipment, 8 are the wheels of the mobile trolley 7,
9 is a gear for rotating the spouting pipe 4; 10 is a hydraulic motor that drives the rotating gear 9; 11 is a hydraulic cylinder that moves a piston inserted into the spouting pipe 4 forward and backward to pour out the refractory material; 12; is the above-mentioned component 4~
A support frame 11 is integrally supported, 13 is an I-beam installed in a factory building, etc., and 14 is an elevating chain block that supports the support frame 12 by a chain 15 so as to be movable up and down.

In the present invention, in substantially the above configuration, when removing the pouring pipe 4 from the tapping port 2 after construction,
The present invention is characterized by a device that can reliably hold the perforated formwork 6 within the tap hole 2.

That is, in FIG. 2, 20 is a connection surface of the tap hole 2, 21 is a holding plate attached to the front surface of the support frame 12 of the repair device 3 via a buffer spring 23 and a connecting rod 24, The same holding plate 21
can press the flange 6a provided at the front of the perforated formwork 6, which is flush with the connecting surface 20, with its front surface.

Also, to explain the other components in the above embodiment, in FIGS. 2 and 3,
Reference numerals 30 to 34 indicate a configuration for connecting the support frame to the front surface of the tap hole, 30 indicates three connecting rods attached to the front surface of the support frame, and 31 indicates the connection rods 30 provided in the axial direction on the outer periphery of the tip. 32 is a centering guide tube, 33 is a centering guide tube mounting plate, and 34 is a fitting groove.

In addition, in Figures 1, 2, and 4, 4
0 to 46 relate to mechanisms for moving the connecting rod 30 forward and backward and rotating it, and 40 relates to the mechanism for moving the connecting rod 30 forward and backward and rotating it.
41 is a ring body which is rotated by a key together with the three connecting rods 30, 42 is an arm protruding from the ring body 41, and 43 and 44 are mutually rotating between the three ring bodies 41. 45 is an intermediate connection rotation arm of the links 43 and 44, and 46 is a link for rotating the intermediate connection rotation arm 43 to rotate the ring body 41 and the connection rod 30 via the links 43 and 44. The rotating hydraulic cylinder 47 is a stopper attached to the connecting rod 30.

To explain the repair work of the tap hole 2 using the repair device having the above configuration, first, after shaping the tap hole 2, the pouring pipe 4 equipped with the perforated formwork 6 is inserted into the tap hole 2. While retreating and rotating the pouring pipe 4, pour the refractory A onto the inner wall surface of the tap hole 2 through the pouring nozzle 5 and the through hole of the perforated formwork 6.
Make it adhere. The work is completed by completely removing the pouring pipe 4 from the tapping port 2.

In the above work, in the present invention, the perforated formwork 6 is firmly attached to the connecting surface of the tap hole 2 by the holding plate 21.
Since the pressure is 0, the perforated formwork 6 can be set reliably and the perforated formwork 6 can be prevented from detaching from the tapping port 2 as the pouring pipe 4 retreats. This can be prevented, the refractory can be poured out smoothly, and the tap hole 2 can be formed with an accurate shape using the pouring pipe 4.

[Effect of idea]

As described above, with the present invention, the perforated formwork can be set reliably, and the perforated formwork can be held in the tap hole even if the pouring pipe retreats, so the accurate shape can be achieved. The tap hole can be repaired.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the repair device according to the present invention, FIG. 2 is an explanatory diagram showing the main parts of the same embodiment, and FIG. 3 is an explanatory diagram showing the state in which the perforated formwork is installed.
FIG. 4 is an explanatory diagram showing a mechanical part that allows the connecting rod to freely rotate. In the figure, 1... Converter, 2... Steel tapping port, 3... Repair device, 4... Pour pipe, 5... Pour nozzle, 6
...Perforated formwork, 7...Moving trolley, 8...Wheels, 9
... Rotating gear, 10 ... Hydraulic motor, 11 ... Hydraulic cylinder, 12 ... Support machine frame, 13 ... I beam, 14 ... Lifting chain block, 15 ... Chain, 20 ... Connection surface, 21 ...Press plate, 22
... Support machine frame, 23 ... Buffer spring, 24
...Connection rod, 30...Connection rod, 31...Protrusion, 32...Centering guide tube, 33...Centering guide tube mounting plate, 34...Fitting groove, 40...Hydraulic cylinder for advancing and retracting, 41... ... Ring body, 42 ... Arm, 4
3, 44...Link, 45...Intermediate connection rotating arm, 46...Rotation hydraulic cylinder, 47...Stopper.

Claims (1)

[Scope of utility model registration request] A pouring pipe that can freely move in and out of the melt distribution port of the furnace body, a pipe support mechanism that supports the pouring pipe so that it can move forward and backward, a perforated form installed on the circumferential surface of the pouring pipe, and the pipe. A repair device for a furnace melt flow port, comprising a perforated form pressing device that presses an end face of the perforated form against an opening wall of the melt flow port attached to a support mechanism.