Dry-type furnace cover

Abstract

The utility model relates to the field of refining furnaces, and discloses a dry type furnace cover which comprises a refining furnace, a furnace cover is arranged at the top of the refining furnace, the bottom of the furnace cover is embedded with the top of the refining furnace, four connecting lugs are fixedly connected to the outer wall of the top of the refining furnace, the four connecting lugs are evenly distributed, and heat insulation rock wool is fixed to the outer wall of the furnace cover. A vacuum cavity is formed in the bottom of the inner side of the furnace cover, bolts are fixedly connected to the four corners of the bottom of the furnace cover, the bolts downwards penetrate through the connecting lugs and are in clearance fit with the connecting lugs, locking nuts are in threaded connection with the outer walls of the bolts, and the tops of the locking nuts abut against the bottoms of the connecting lugs. The heat insulation rock wool on the outer layer of the furnace cover and the vacuum cavity at the bottom of the inner side jointly form an efficient heat insulation system, so that heat transfer can be remarkably reduced, and the surrounding environment is protected from being influenced by high temperature.

Description

Technical Field

[0001] The utility model relates to the field of refining furnaces, in particular to a dry furnace cover. Background Art

[0002] In the ferroalloy industry, refining furnaces mostly use water-cooled furnace covers to reduce the temperature of the furnace cover, minimize deformation of the furnace cover, and prevent the metal material from deteriorating due to long-term high temperature and becoming unrepairable.

[0003] The biggest disadvantage of using a water-cooled furnace cover is that if there is a serious leak, water will enter the molten iron and cause an explosion, which poses a major safety hazard. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies, the utility model provides a dry furnace hood.

[0005] The technical solution adopted by this utility model:

[0006] A dry furnace hood includes a refining furnace, a furnace hood on the top of the refining furnace, the bottom of the furnace hood is embedded in the top of the refining furnace, four connecting ears are fixedly connected to the outer wall of the top of the refining furnace, and the four connecting ears are evenly distributed. The outer wall of the furnace hood is fixed with insulating rock wool, and a vacuum chamber is provided at the inner bottom of the furnace hood. Bolts are fixed to the four corners of the bottom of the furnace hood, and the bolts pass through the connecting ears downward. The bolts and the connecting ears are clearance-matched, and the outer wall of the bolt is threadedly connected with a locking nut, and the top of the locking nut abuts against the bottom of the connecting ear.

[0007] Beneficial effects of the utility model:

[0008] The heat-insulating rock wool on the outer layer of the furnace cover of the utility model and the vacuum cavity at the inner bottom together constitute an efficient heat-insulating system, which can significantly reduce the transfer of heat and protect the surrounding environment from the influence of high temperature. The bottom of the furnace cover is embedded in the top of the refining furnace and is firmly fixed together by bolts and locking nuts, ensuring that the furnace cover will not fall off or deform due to high temperature or external force during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model;

[0010] Figure 2 It is a structural diagram of the furnace cover;

[0011] Figure 3 It is a schematic diagram of the structure of the utility model;

[0012] Figure 4 yes Figure 3 Cross-section view at AA in the middle.

[0013] The specific reference numerals in all the drawings are: 1. refining furnace; 2. connecting ear; 3. furnace cover; 4. thermal insulation rock wool; 5. bolt; 6. locking nut; 7. vacuum chamber. DETAILED DESCRIPTION

[0014] like Figure 1-4 As shown: A dry furnace hood, including a refining furnace 1, a furnace hood 3 is provided on the top of the refining furnace 1, the bottom of the furnace hood 3 is embedded in the top of the refining furnace 1, four connecting ears 2 are fixedly connected to the outer wall of the top of the refining furnace 1, and the four connecting ears 2 are evenly distributed. The outer wall of the furnace hood 3 is fixed with insulating rock wool 4, and a vacuum chamber 7 is provided at the inner bottom of the furnace hood 3. Bolts 5 are fixedly connected to the four corners of the bottom of the furnace hood 3, and the bolts 5 pass through the connecting ears 2 downward. The bolts 5 and the connecting ears 2 are loosely matched. The outer wall of the bolt 5 is threadedly connected with a locking nut 6, and the top of the locking nut 6 abuts against the bottom of the connecting ear 2.

[0015] First, four evenly distributed connecting ears 2 are pre-fixed on the top outer wall of the refining furnace 1 .

[0016] The bottom of the furnace hood 3 is designed with a structure that fits with the top of the refining furnace 1. The bottom of the furnace hood 3 is penetrated downward by the connecting ear 2 through the bolt 5, and the locking nut 6 is tightened to firmly fix the furnace hood 3 on the top of the refining furnace 1, ensuring that the furnace hood can firmly cover the top of the refining furnace.

[0017] The outer wall of the furnace cover 3 is fixed with heat-insulating rock wool 4 to effectively isolate the heat. A vacuum chamber 7 is provided at the inner bottom of the furnace cover 3. This design further enhances the heat insulation effect of the furnace cover.

[0018] When the refining furnace 1 starts working, the high temperature inside the furnace will generate a large amount of heat. The heat-insulating rock wool 4 on the outer layer of the furnace cover 3 can effectively absorb and isolate part of the heat, preventing the heat from being transferred to the external environment.

[0019] At the same time, the vacuum chamber 7 at the bottom inner side of the furnace cover 3 further reduces the heat transfer by utilizing the heat insulation effect of the vacuum.

[0020] The two layers of heat insulation measures work together to enable the furnace cover 3 to effectively protect the surrounding environment from high temperature, while also reducing heat loss and improving the working efficiency of the refining furnace.

Claims

1. A dry furnace hood, characterized in that: The invention comprises a refining furnace (1), wherein the top of the refining furnace (1) is provided with a furnace cover (3), the bottom of the furnace cover (3) is engaged with the top of the refining furnace (1), the outer wall of the top of the refining furnace (1) is fixedly connected with four connecting ears (2), the four connecting ears (2) are evenly distributed, the outer wall of the furnace cover (3) is fixed with heat-insulating rock wool (4), the inner bottom of the furnace cover (3) is provided with a vacuum chamber (7), the four corners of the bottom of the furnace cover (3) are fixedly connected with bolts (5), the bolts (5) pass through the connecting ears (2) downward, the bolts (5) and the connecting ears (2) are loosely matched, the outer wall of the bolts (5) is threadedly connected with a locking nut (6), and the top of the locking nut (6) abuts against the bottom of the connecting ear (2).

Images