Cupola and repair process thereof

Abstract

The invention relates to the field of iron casting, in particular to a cupola and a repair process thereof. The cupola comprises a back furnace; the back furnace comprises a waist furnace and a charging port; the waist furnace is provided with a hot air pipe and a repair mechanism; the repair mechanism comprises a repair block and multiple auxiliary pushing units; a charging channel communicatingwith the charging port is formed in the side wall of the back furnace; a hot air channel is formed in the side wall of the upper end of the waist furnace; each auxiliary pushing unit comprises a ballscrew pair, an auxiliary pushing pipe and a blockage module; the blockage module can intermittently block the charging channel and the hot air channel; the ball screw pair comprises a screw rod and anut base; and the nut base is connected with the repair block through the auxiliary pushing pipe. The repair process of the cupola comprises the following steps: (1) the hot air channel is blocked; and the nut base moves down; (2) iron shots on refractory bricks are removed; and meanwhile, the inner side walls of the refractory bricks are repaired; and (3) the repair block is used for repair and mud injection. The cupola can automatically remove the iron shots, and meanwhile, can repair the refractory bricks.

Description

technical field

[0001] The invention relates to the field of cast iron, in particular to a cupola and a repair process thereof. Background technique

[0002] The cupola is an important equipment for melting cast iron in foundry production. The cast iron block is melted into molten iron and poured into the sand mold to be cooled and then opened to obtain castings.

[0003] The cupola is a vertical cylindrical melting furnace, which is divided into a front furnace and a rear furnace. The forehearth includes taphole, slag outlet, front hearth and bridge; the back furnace includes back hearth, waist furnace, charging port and top furnace.

[0004] In the process of melting cast iron, part of the limestone, metal charge and layer coke are melted in the rear hearth, and the other part of the limestone, metal charge and layer coke are preheated in the waist furnace. After the raw materials in the rear hearth are melted, the waist furnace The raw materials at the first position fa...

Examples

Embodiment Construction

[0027] The following is further described in detail through specific implementation methods:

[0028] The reference signs in the accompanying drawings of the description include: front furnace 1, rear furnace 2, taphole 3, slag outlet 4, front hearth 5, bridge bridge 6, rear hearth 7, waist furnace 8, feeding port 9, Spark cover 10, support block 11, hot air pipe 12, repair block 13, annular cavity 14, hole 15, feeding channel 16, hot air channel 17, booster tube 18, pressing plate 19, spring 20, sliding rod 21, plugging Plate 22, screw rod 23, nut seat 24, first booster fan 25, second booster fan 26, first cavity 27, second cavity 28, strip hole 29, channel 30, feeding hole 31.

[0029] The embodiment is basically as attached Figure 1-5 Shown: as figure 1 The shown cupola includes a forehearth 1 and a rear furnace 2, the forehearth 1 includes a taphole 3, a slag outlet 4, a front hearth 5 and a bridge 6, and the rear furnace 2 sequentially includes a rear furnace from bott...

technical field

[0001] The invention relates to the field of cast iron, in particular to a cupola and a repair process thereof. Background technique

[0002] The cupola is an important equipment for melting cast iron in foundry production. The cast iron block is melted into molten iron and poured into the sand mold to be cooled and then opened to obtain castings.

[0003] The cupola is a vertical cylindrical melting furnace, which is divided into a front furnace and a rear furnace. The forehearth includes taphole, slag outlet, front hearth and bridge; the back furnace includes back hearth, waist furnace, charging port and top furnace.

[0004] In the process of melting cast iron, part of the limestone, metal charge and layer coke are melted in the rear hearth, and the other part of the limestone, metal charge and layer coke are preheated in the waist furnace. After the raw materials in the rear hearth are melted, the waist furnace The raw materials at the first position fa...

Examples

Embodiment Construction

[0027] The following is further described in detail through specific implementation methods:

[0028] The reference signs in the accompanying drawings of the description include: front furnace 1, rear furnace 2, taphole 3, slag outlet 4, front hearth 5, bridge bridge 6, rear hearth 7, waist furnace 8, feeding port 9, Spark cover 10, support block 11, hot air pipe 12, repair block 13, annular cavity 14, hole 15, feeding channel 16, hot air channel 17, booster tube 18, pressing plate 19, spring 20, sliding rod 21, plugging Plate 22, screw rod 23, nut seat 24, first booster fan 25, second booster fan 26, first cavity 27, second cavity 28, strip hole 29, channel 30, feeding hole 31.

[0029] The embodiment is basically as attached Figure 1-5 Shown: as figure 1 The shown cupola includes a forehearth 1 and a rear furnace 2, the forehearth 1 includes a taphole 3, a slag outlet 4, a front hearth 5 and a bridge 6, and the rear furnace 2 sequentially includes a rear furnace from bott...

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