Semi-closed submerged arc furnace cover with adjusting function

Abstract

The utility model relates to the technical field of industrial silicon production, in particular to a semi-closed submerged arc furnace cover with an adjusting function, which comprises a furnace cover body, a heat exchange mechanism is arranged on the side face of the furnace cover body, and a cooling mechanism is arranged on one side of the heat exchange mechanism. The cooling mechanism comprises a cooling box, an air cooler is installed at the top of the cooling box, a lead screw is inserted into the front face of the cooling box, a fixing frame is connected to the outer portion of the lead screw in a threaded mode, a ventilation pipe is welded to the outer portion of the fixing frame, and a first-level air hole and a second-level air hole are formed in the surface of the ventilation pipe. The cooling mechanism is additionally arranged on one side of the heat exchange mechanism, preliminary cooling is conducted before a heat exchange plate is opened, internal high-temperature gas is prevented from being directly exhausted to burn workers, primary air holes and secondary air holes are additionally formed in the surface of an air exchange pipe, the position of a baffle is adjusted, the baffle sequentially penetrates through the primary air holes and the secondary air holes, the cooling efficiency is adjusted in real time, and proper cooling is achieved; and too fast cooling in the furnace body is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial silicon production, in particular to a semi-enclosed submerged arc furnace cover with an adjustment function. Background Art

[0002] Industrial silicon refers to silicon products that are widely used in industrial production, mainly including: ferrosilicon, metallic silicon, silicon manganese, silicon aluminum, barium manganese titanium iron, silicon manganese vanadium iron, silicon aluminum barium iron, silicon aluminum iron, silicon calcium, silicon steel plate, aluminum silicon alloy, nickel chromium-nickel silicon thermocouple wire, manganese silicon alloy, rare earth silicon calcium barium, silicon calcium alloy, silicon barium alloy, silicon chromium alloy, magnesium silicon alloy, germanium silicon alloy, silicon cobalt, silicon bronze, iron silicon alloy, zinc silicon alloy, silicon titanium iron alloy, nickel silicon alloy, aluminum magnesium, silicon alloy, copper silicon alloy, etc.

[0003] In the process of industrial silicon production, a submerged arc furnace is needed to smelt its raw materials. The submerged arc furnace is also called an arc furnace or a resistance furnace. It is mainly used to reduce and smelt raw materials such as ores, carbonaceous reducing agents and solvents. It mainly produces ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicon-manganese alloy and other ferroalloys. It is an important industrial raw material in the metallurgical industry and chemical raw materials such as calcium carbide. At present, submerged arc furnaces are mainly divided into fully enclosed submerged arc furnaces and semi-enclosed submerged arc furnaces, mainly because of the different degrees of closure of the furnace body. The cover of the semi-enclosed submerged arc furnace is not in a closed state, and a heat exchange port will be added on its top or side. The cold air is exchanged through the heat exchange port to burn with the carbon monoxide in the furnace into carbon dioxide, reducing carbon monoxide pollution. However, the traditional semi-enclosed submerged arc furnace cover usually has the following problems when in use:

[0004] 1. The temperature inside the submerged arc furnace is high, and there is no heat dissipation component. If the furnace cover is directly opened during the heat exchange process or the heat exchange port on the top of the furnace cover is opened, the high-temperature gas in the furnace body will be directly discharged, which may easily burn the staff nearby;

[0005] 2. Add air cooling or water cooling device at the heat exchange port. Ordinary cooling device cannot be adjusted during the cooling process, and the cooling efficiency cannot be adjusted according to the temperature inside the furnace. Improper operation will cause the temperature inside the furnace to drop too quickly. Utility Model Content

[0006] The purpose of the utility model is to provide a semi-enclosed submerged arc furnace cover with an adjustment function, so as to solve the problem that the ordinary furnace cover mentioned in the background technology has no adjustable cooling device at the furnace cover and cannot properly cool the hot gas at the heat exchange port. To achieve the above purpose, the utility model provides the following technical solution: the semi-enclosed submerged arc furnace cover with an adjustment function comprises a furnace cover body, a heat exchange mechanism is provided on the side of the furnace cover body, and a cooling mechanism is provided on one side of the heat exchange mechanism.

[0007] The cooling mechanism includes a cooling box, a cold air blower is installed on the top of the cooling box, a screw rod is inserted into the front of the cooling box, the external thread of the screw rod is connected to a fixing frame, a ventilation pipe is welded to the outside of the fixing frame, the surface of the ventilation pipe is respectively provided with primary air holes and secondary air holes, and a baffle is inserted into one end of the screw rod.

[0008] Further preferably, an electrode hole is provided on the top of the furnace cover body, and a smoke exhaust pipe is installed on one side of the electrode hole.

[0009] Further preferably, the heat exchange mechanism comprises a heat exchange plate connected to the furnace cover body via a hinge, a limiting block is welded to one side of the heat exchange plate, and a limiting rod is inserted into one side of the limiting block.

[0010] Further preferably, the heat exchange mechanism is provided with several groups, and one side of each group of heat exchange mechanism is equipped with a group of cooling mechanism.

[0011] Further preferably, the hole diameter of the primary pores is smaller than the hole diameter of the secondary pores.

[0012] Further preferably, the baffle is circular, and a sliding connection is adopted between the baffle and the inner wall of the ventilation pipe.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, a cooling mechanism is added to one side of the heat exchange mechanism. When the air cooler on the top is started, the cold air blown by the air cooler enters the ventilation pipe from the primary air holes and the secondary air holes, and enters the furnace cover body from the ventilation pipe, performs a preliminary heat exchange with the hot air inside, and then performs preliminary cooling before opening the heat exchange plate to prevent the high-temperature gas inside from being directly discharged to burn the staff.

[0015] In the utility model, primary air holes and secondary air holes are added to the surface of the ventilation tube, and the position of the baffle is adjusted to rotate the screw rod. The screw rod rotates forward to drive the baffle to slide forward along the heat exchange tube, and the screw rod rotates reversely to drive the baffle to slide backward along the heat exchange tube. By adjusting the position of the baffle, the primary air holes and the secondary air holes can be opened or closed in turn, respectively, so as to adjust the cooling efficiency in real time, reduce the temperature appropriately, and avoid excessive cooling of the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the heat exchange plate of the utility model;

[0018] Figure 3 This is a schematic diagram of the formal cross-sectional structure of the cooling mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the cooling mechanism of the utility model from top view;

[0020] Figure 5 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0021] In the figure: 1. furnace cover body; 101. electrode hole; 102. smoke exhaust pipe; 2. heat exchange mechanism; 201. heat exchange plate; 202. limit block; 203. limit rod; 3. cooling mechanism; 301. cooling box; 302. air cooler; 303. screw rod; 304. fixing frame; 305. ventilation pipe; 306. primary air hole; 307. secondary air hole; 308. baffle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 5 The utility model provides a technical solution: a semi-enclosed ore-heating furnace cover with an adjustment function, comprising a furnace cover body 1, a heat exchange mechanism 2 is arranged on the side of the furnace cover body 1, and a cooling mechanism 3 is arranged on one side of the heat exchange mechanism 2.

[0024] The cooling mechanism 3 includes a cooling box 301, a cooling fan 302 is installed on the top of the cooling box 301, a screw rod 303 is inserted into the front of the cooling box 301, the external thread of the screw rod 303 is connected to the fixing frame 304, the outside of the fixing frame 304 is welded with a ventilation pipe 305, the surface of the ventilation pipe 305 is respectively provided with a primary air hole 306 and a secondary air hole 307, and a baffle 308 is inserted into one end of the screw rod 303.

[0025] In this embodiment, Figure 1 As shown, an electrode hole 101 is provided on the top of the furnace cover body 1, and a smoke exhaust pipe 102 is installed on one side of the electrode hole 101; it should be noted that the electrode is inserted through the electrode hole 101, the electrode heats the furnace body, and the smoke generated in the furnace body is discharged from the smoke exhaust pipe 102 on the top.

[0026] In this embodiment, Figure 2 and Figure 5As shown, the heat exchange mechanism 2 includes a heat exchange plate 201 and a furnace cover body 1 connected by a hinge, a limiting block 202 is welded on one side of the heat exchange plate 201, and a limiting rod 203 is inserted on one side of the limiting block 202; it should be noted that, by pulling out the limiting rod 203 upwards and moving the limiting block 202, the heat exchange plate 201 can be opened through the limiting block 202 for gas exchange.

[0027] In this embodiment, Figure 1 and Figure 2 As shown, the heat exchange mechanism 2 is provided with several groups, and each side of each group of heat exchange mechanism 2 is equipped with a group of cooling mechanism 3; it should be noted that the heat exchange plate 201 of each heat exchange mechanism 2 can be opened individually, and the heat exchange plate 201 can be selectively opened according to actual needs, and then the heat exchange plates 201 are opened, and the gas around the inner wall of the heat exchange plate 201 is first cooled by the cooling mechanism 3 to avoid hot gas burning the staff.

[0028] In this embodiment, Figure 4 As shown, the hole diameter of the primary air hole 306 is smaller than the hole diameter of the secondary air hole 307; it should be noted that when the top air cooler 302 is started, the cold air blown by the air cooler 302 enters the ventilation pipe 305 from the primary air hole 306 and the secondary air hole 307, and enters the furnace cover body 1 from the ventilation pipe 305, and performs preliminary heat exchange with the hot air inside it. The hole diameter of the primary air hole 306 is smaller than the hole diameter of the secondary air hole 307, and the primary air hole 306 and the secondary air hole 307 can be selectively opened, and the gear of the air cooler 302 can be adjusted. When the primary air hole 306 and the secondary air hole 307 are all opened, the gear of the air cooler 302 is opened to the maximum, and the cooling efficiency is the highest.

[0029] In this embodiment, Figure 3 As shown, the baffle 308 is set to be circular, and the baffle 308 is connected to the inner wall of the ventilation tube 305 by sliding. It should be noted that by rotating the screw rod 303, the screw rod 303 rotates forward, driving the baffle 308 to slide forward along the heat exchange tube, and the screw rod 303 rotates reversely, driving the baffle 308 to slide backward along the heat exchange tube. By adjusting the position of the baffle 308, the primary air hole 306 and the secondary air hole 307 can be opened or closed in turn to adjust the cooling efficiency.

[0030] The use method and advantages of the utility model: The semi-enclosed ore-heating furnace cover with an adjustment function, when in use, has the following working process:

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, first start the rotating screw 303, the screw 303 rotates forward, driving the baffle 308 to slide forward along the heat exchange tube. When the baffle 308 slides over the primary air hole 306, start the air cooler 302, and the cold air blown by the air cooler 302 enters the air exchange tube 305 from the primary air hole 306, and enters the furnace cover body 1 from the air exchange tube 305, and performs a preliminary heat exchange with the hot air inside, and performs a preliminary cooling of the hot air on the inner wall of the heat exchange plate 201, and then opens the heat exchange Plate 201, after the heat exchange plate 201 is opened, the external cold air and the cold air in the furnace cover body 1 will exchange heat again. If the temperature is high, the screw rod 303 can be rotated again to drive the baffle 308 to continue to slide outward until it passes over the secondary air hole 307, and the gear of the air cooler 302 is adjusted to the maximum. At this time, the internal cold air will enter the air exchange pipe 305 from the primary air hole 306 and the secondary air hole 307, thereby accelerating the cooling efficiency around the inner wall of the heat exchange plate 201.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A semi-enclosed ore-fired furnace cover with an adjustment function, comprising a furnace cover body (1), Features: A heat exchange mechanism (2) is provided on the side of the furnace cover body (1), and a cooling mechanism (3) is provided on one side of the heat exchange mechanism (2); The cooling mechanism (3) comprises a cooling box (301), a cooling fan (302) is installed on the top of the cooling box (301), a screw rod (303) is inserted into the front of the cooling box (301), the external thread of the screw rod (303) is connected to a fixing frame (304), a ventilation pipe (305) is welded to the outside of the fixing frame (304), the surface of the ventilation pipe (305) is respectively provided with a primary air hole (306) and a secondary air hole (307), and a baffle (308) is inserted into one end of the screw rod (303).

2. The semi-enclosed submerged arc furnace cover with an adjustment function according to claim 1, Features: An electrode hole (101) is provided on the top of the furnace cover body (1), and a smoke exhaust pipe (102) is installed on one side of the electrode hole (101).

3. The semi-enclosed submerged arc furnace cover with an adjustment function according to claim 1, Features: The heat exchange mechanism (2) comprises a heat exchange plate (201) connected to the furnace cover body (1) via a hinge, a limiting block (202) being welded on one side of the heat exchange plate (201), and a limiting rod (203) being inserted on one side of the limiting block (202).

4. The semi-enclosed submerged arc furnace cover with an adjustment function according to claim 1, Features: The heat exchange mechanism (2) is provided with a plurality of groups, and one side of each group of heat exchange mechanism (2) is provided with a group of cooling mechanism (3).

5. The semi-enclosed submerged arc furnace cover with an adjustment function according to claim 1, Features: The hole diameter of the primary pore (306) is smaller than the hole diameter of the secondary pore (307).

6. The semi-enclosed submerged arc furnace cover with an adjustment function according to claim 1, Features: The baffle plate (308) is designed to be circular, and a sliding connection is adopted between the baffle plate (308) and the inner wall of the ventilation pipe (305).

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