JPS6236841Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a thermal spray repair device for a converter that sprays a repair material such as refractory powder together with flame toward the inner wall surface of the converter.

Generally, in this type of equipment, a burner for powder spraying is provided at the tip of a pipe-shaped lance, and repair work is carried out by inserting the burner horizontally into an overturned converter. However, even though the device is large, the working space in front of the furnace is sometimes small, resulting in the following problems. That is, when driving the lance, the lance hits an obstacle such as a side wall, or the lance is restricted to a narrow space, resulting in a problem that the spraying range is only partially possible.

The present invention provides a deck for a thermal spraying device above the foundation, a deck for a converter above the deck, a support device for supporting the converter with its opening facing downward on the deck for the converter, A thermal spraying device that enters the converter and sprays the inner surface of the converter is supported by a thermal spraying device deck, and a device for moving the thermal spraying device horizontally and a device for moving it vertically are provided,
The present invention is characterized in that the base is provided with a pit into which the thermal spraying device enters when the thermal spraying device is lowered.

Next, embodiments will be described with reference to the drawings.

In the drawing, which is a schematic vertical cross-sectional view, two decks 1 and 2, upper and lower, are provided above the floor (not shown) of a workshop. The upper deck 1 has an opening 4 into which the converter 3 enters, and the converter 3 is supported by a support device 5 on the deck 1 in an upside down position with the converter opening 6 facing down.

The lower deck 2 also has an opening 7.
A pair of rails 9 are provided on the upper surface of the deck 2 near the. A truck 10 is movably mounted on the rail 9, and a lid 12 is horizontally supported on the truck 10 via a vertical position adjustment mechanism 11.
A bearing 13 is provided at the center of the truck 10, and a pipe-shaped lance 15 is vertically supported by the bearing 13 so as to be rotatable and movable up and down. The lance 15 passes through the hole in the lid 12 and connects to the converter 3.
The repair material powder is sprayed from the burner 16 at the upper end toward the inner wall surface of the converter 3. Although not shown, passages are provided inside the lance 15 for supplying powder, propane gas, oxygen, etc. to the burner 16, and these passages are connected via a rotary joint 17 provided at the lower end of the lance 15. It is connected to an external powder supply hose and gas supply hose (both not shown).

The lower end of the lance 15 is connected to a lance rotation motor 19 via a chain or the like. Rotating joint 17
One end of a chain 20 is connected to the side of the body. The other end of the chain 20 is the bracket 2.
1 or a frame, and the intermediate portion is hooked onto a roller 22 from above at the highest position. The roller 22 is a vertical hydraulic cylinder 23
It is provided at the upper end of the piston rod 24. Piston 23 is fixed to bracket 21. Bracket 21 is provided in case 25. The case 25 includes a cylinder 23, a rotary joint 17, and a motor 19.
A roller 26 at the upper end is movably guided by the lower surface of the deck 2, and is adapted to travel together with the truck 10.

The converter repair work is performed by spraying repair material powder from the burner 16 onto the inner wall surface of the converter 3. In that case, by rotating the lance 15 with the motor 19, the direction of the burner 16 is changed,
A sprayed layer can be formed all around the inner wall surface of the converter. Furthermore, by expanding and contracting the rod 24 of the cylinder 23, the lance 15 can be raised and lowered via the chain 20, and a sprayed layer can be formed over the entire height of the converter 3.

Furthermore, by providing a pit 27 in the foundation below the deck 2 into which the lance 15 enters when descending, the lance 15 can be moved up and down and the case 25 can be moved freely and without any hindrance.

As explained above, according to the present invention, the entire inner wall surface of the converter can be easily repaired as a repair work without hitting obstacles such as side walls.
Moreover, this pit construction can be installed more easily and inexpensively than removing and expanding the side walls.

[Brief explanation of the drawing]

The drawing is a schematic vertical cross-sectional view of an embodiment of the present invention. 1, 2...Deck, 3...Converter, 5...Converter support device, 6...Opening, 15...Lance (thermal spraying device), 27...Pit.

Claims (1)

[Scope of utility model registration request] A deck for thermal spray equipment is provided above the foundation, a deck for a converter is provided above the deck, a support device is provided on the deck for the converter to support the converter with its opening facing downward, and A thermal spraying device that enters the converter and sprays the inside surface of the converter is supported by a thermal spraying device deck, and a device for moving the thermal spraying device horizontally and a device for moving it vertically are installed. A thermal spraying repair device for a converter lining, characterized by having a pit into which the thermal spraying device enters when descending.