Furnace door windshield device

Abstract

The utility model relates to the technical field of submerged arc furnaces, in particular to a furnace door windshield device. The device comprises a plurality of furnace door air curtain connecting devices which are connected with furnace door curtain guide rails, and the furnace door air curtain connecting devices are connected with loop chains through chain guide hooks. By utilizing the characteristics of the loop chain, the observability is increased on the basis of reducing the area of the furnace door, and the smelting condition in the hearth can be observed through the gap between the loop chain and the loop body. The ventilation area can be effectively reduced, radiant heat is blocked, meanwhile, it can be guaranteed that a stoking operator can effectively observe the smelting condition in the furnace, the increased ventilation rate after the furnace door is opened is effectively compensated, the radiant heat generated in the furnace is blocked, the safety of the stoking operator is protected, and the smelting condition in the furnace is conveniently observed. The structure is compact, moving is convenient, and dismounting and replacing are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of ore-fired furnaces, in particular to a furnace door windshield device. Background Art

[0002] In existing technology, some equipment requiring furnace tamping during non-ferrous metal smelting typically utilizes hydraulically operated lift doors or non-water-permeable double-door systems. When tamping is required, the furnace door is opened, and a tamping machine is driven to the door position to dig and scoop the furnace material, breaking up and stirring the solidified silicon film within the material. This ensures the material's air permeability and allows sufficient oxygen in the air to react with the material, achieving optimal smelting results.

[0003] Each time the furnace is tamped, the furnace door is opened, which increases the ventilation area of the furnace cover and causes the flue gas in the furnace to overflow with the furnace door. There are currently two ways to solve this problem in the industry: 1. Add a temporary dust hood outside the furnace door to solve the problem of flue gas overflow during the tamping process. The disadvantage is that temporary equipment is added, the building area is sacrificed, and the operating space is very narrow. Increasing the operating space requires increasing the length and size of the factory building and major equipment, which increases investment. 2. Increasing the power of the electric furnace's main exhaust fan to compensate for the increased ventilation area when the furnace door is opened and solve the problem of flue gas overflow caused by the increased ventilation. The disadvantage is that the increase in the power of the main exhaust fan will increase the pressure in the furnace during normal production, which is not conducive to smelting. If the fan is repeatedly frequency-converted, the fan life will be greatly affected. Utility Model Content

[0004] The purpose of the utility model is to provide a furnace door windshield device which has good smoke blocking effect, compact structure and is convenient for observing the situation inside the furnace in order to solve the above-mentioned shortcomings.

[0005] The technical solution of the utility model is: a furnace door wind shield device, which is characterized by comprising a plurality of furnace door air curtain connecting devices, the furnace door air curtain connecting devices are connected to the furnace door curtain guide rails, and the furnace door air curtain connecting devices are connected to the ring chain through a chain guide hook.

[0006] The above scheme also includes:

[0007] The furnace door air curtain connecting device includes a sliding wheel group for hanging on the furnace door curtain guide rail, a horizontal axis is connected to the sliding wheel group, a movable lifting ring is provided on the horizontal axis, the movable lifting ring is connected to a guide chain hook, and a ring chain is hung on the lower end of the guide chain hook.

[0008] The furnace door air curtain connection device includes a sliding wheel group for hanging on the furnace door curtain guide rail, a horizontal axis is connected to the sliding wheel group, a movable lifting ring is provided on the horizontal axis, the movable lifting ring is movably connected to a section of channel steel, and chain guide hooks are hung at intervals along the length direction in the section of channel steel, and a ring chain is hung at the lower end of each chain guide hook.

[0009] The advantages of this utility model are: 1. Utilizing the characteristics of the chain, while reducing the area of the furnace door, it increases observability. Through the gaps between the chain links, the smelting conditions within the furnace can be observed. This effectively reduces the ventilation area and blocks radiant heat, while ensuring that the smelting operator can effectively observe the smelting conditions within the furnace. This effectively compensates for the increased air permeability when the furnace door is opened, blocks radiant heat generated within the furnace, protects the smelting operator, and facilitates observation of the smelting conditions within the furnace. 2. The compact structure allows for easy movement and disassembly and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a simplified structural diagram of the utility model.

[0011] Figure 2 yes Figure 1 Top view of the structural diagram.

[0012] Figure 3 This is a partially enlarged structural diagram of the furnace door air curtain connection device. DETAILED DESCRIPTION

[0013] See also Figure 1 -3. The names of the parts are as follows: furnace door air curtain connecting device 2, furnace door curtain guide rail 1, chain guide hook 3, ring chain 4, sliding wheel set 5, horizontal shaft 6, movable lifting ring 7, a section of channel steel 8, rotating shaft 9, hanging plate 10.

[0014] See also Figure 1 -3. A furnace door air shield device includes multiple furnace door air curtain connecting devices 2, which are connected to the furnace door curtain guide rail 1. The furnace door air curtain connecting devices 2 are connected to the ring chain 4 via a chain guide hook 3, achieving a stable connection. The ring chain 4 is a short, heat-resistant, tight, and strong lifting chain. The ring chain reduces the ventilation area of the furnace cover, preventing smoke from escaping during furnace tamping.

[0015] The furnace door air curtain connecting device 2 has two embodiments, namely, embodiment 1 and embodiment 2.

[0016] See also Figure 3 , Example 1, the furnace door air curtain connecting device 2 includes a sliding wheel group 5 for hanging on the furnace door curtain guide rail 1, the furnace door curtain guide rail 1 is an inverted T-shaped column pin, the sliding wheel group 5 is a roller on both sides of the furnace door curtain guide rail 1, the sliding wheel group 5 is connected to the horizontal shaft 6 under the hanging plates 10 on both sides, the horizontal shaft 6 has a movable ring 7, inverted channel steel shape, the movable ring 7 is movably connected to a section of channel steel 8 through a rotating shaft 9, a section of channel steel 8 is hung with guide chain hooks 3 at intervals along the length direction, and each guide chain hook 3 is hung with a ring chain 4 at the lower end, forming a row of spaced ring chains 4 under a section of channel steel 8 ( Figure 1(Seven links are shown in the figure, but are not limited thereto). The movable lifting ring 7 and a section of channel steel 8 can rotate relative to each other. The movable lifting ring 7 and the hanging plate 10 can rotate relative to each other. Figure 1 The left side of the middle shows the device in closed state. Figure 1 The right side of the center diagram shows the device in its open state. That is, one furnace door air curtain connection device 2 corresponds to one or more chains 4. This device is suitable for submerged arc furnaces. That is, one furnace door air curtain connection device 2 consists of multiple devices arranged side by side, each with multiple chains attached. This device is suitable for submerged arc furnaces. The left and right sides are two states depicted in one diagram.

[0017] In Example 2, the furnace door air curtain connection device 2 includes a sliding wheel assembly 5 for suspension on the furnace door curtain guide rail 1. A horizontal shaft 6 is connected to the sliding wheel assembly 5, which has a movable lifting ring 7. The movable lifting ring 7 is connected to a chain guide hook 3. The lower end of the chain guide hook 3 is connected to a chain 4. That is, each furnace door air curtain connection device 2 corresponds to one chain 4. Example 2 is a basic model and is not applicable. Its defensive function.

[0018] Each set of furnace door air curtain connection devices 2 requires six to seven chains suspended side by side. The number of chains per set can be adjusted based on the size of the furnace door. This allows for the short chains to be pulled to the sides of the furnace door or removed if a broken electrode is detected. This structure allows the chains 4 to be rotated 90° using the rotating shaft 9 on the device, arranging them side by side, effectively reducing the equipment footprint. The sliding wheels 5 on the device then move the chains 4 through the furnace door curtain guide rails 1 to the sides outside the furnace door, eliminating the complex disassembly process and saving labor costs.

[0019] The above description is only a specific implementation of the present invention, and various examples do not limit the essential content of the present invention.

Claims

1. A furnace door windshield device, characterized in that The furnace door air curtain connection device (2) comprises a plurality of furnace door air curtain connection devices (2), wherein the furnace door air curtain connection devices (2) are connected to the furnace door curtain guide rail (1), and the furnace door air curtain connection devices (2) are connected to the ring chain (4) via a chain guide hook (3).

2. A furnace door damper device according to claim 1, characterized in that The furnace door air curtain connecting device (2) comprises a sliding wheel group (5) for hanging on the furnace door curtain guide rail (1), a horizontal shaft (6) is connected below the sliding wheel group (5), a movable lifting ring (7) is provided on the horizontal shaft (6), the movable lifting ring (7) is connected to a chain guide hook (3), and a ring chain (4) is hung at the lower end of the chain guide hook (3).

3. A furnace door damper device according to claim 1, characterized in that The furnace door air curtain connecting device (2) comprises a sliding wheel group (5) for hanging on the furnace door curtain guide rail (1), a horizontal shaft (6) is connected below the sliding wheel group (5), a movable lifting ring (7) is provided on the horizontal shaft (6), the movable lifting ring (7) is movably connected to a section of channel steel (8), and chain guide hooks (3) are hung at intervals along the length direction in the section of channel steel (8), and a ring chain (4) is hung at the lower end of each chain guide hook (3).

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