Holding furnace for non-ferrous metal smelting

Abstract

The holding furnace comprises a furnace body, a heating chamber is arranged in the peripheral side wall of the furnace body, an electric heating ring is arranged in the heating chamber, the electric heating ring is electrified, a feeding port is formed in the top face of the furnace body, a cover plate is arranged at the feeding port, a discharging port is formed in the bottom face of the furnace body, and a discharging pipe is arranged at the discharging port. An on-off valve is arranged on the discharging pipe; a ventilation assembly is further arranged on the top face of the furnace body and comprises a ventilation pipe and a filter plate, a ventilation opening is formed in the top face of the furnace body, the filter plate and the ventilation pipe are detachably installed at the ventilation opening, and the ventilation pipe is arranged on the outer side of the filter plate. According to the technical scheme, the possibility that a worker inhales heavy metal gas when operating the heat preservation furnace can be reduced, and the influence on the body health of the worker is reduced.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting, and in particular to a holding furnace for non-ferrous metal smelting. Background Technology

[0002] Metallurgy is a refining technology that involves extracting metals from ores using methods such as roasting, smelting, electrolysis, and the use of chemical agents. This process reduces impurities or adds certain components to the metal, resulting in the desired metal. Metal smelting requires a melting furnace and a holding furnace. After the raw materials are melted and their chemical composition is adjusted to meet the requirements in the melting furnace, they are transferred to the holding furnace. The main function of the holding furnace is to maintain the temperature of the molten metal within the casting temperature range, ensuring the stable operation of continuous or semi-continuous casting production.

[0003] During the refining of non-ferrous metals, smelting furnaces typically release harmful heavy metal gases. When the molten metal is transferred into a holding furnace, it carries these harmful heavy metal gases into the furnace. Since the holding furnace is not equipped with ventilation components, the heavy metal gases remain inside. When workers open the furnace lid, even if they are wearing masks, they are still likely to inhale some of these heavy metal gases, which can affect their health. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a holding furnace for non-ferrous metal smelting.

[0005] The holding furnace for non-ferrous metal smelting provided in this application adopts the following technical solution:

[0006] A heat-holding furnace for non-ferrous metal smelting includes a furnace body, a heating chamber arranged in the periphery of the furnace body, an electric heating coil arranged in the heating chamber, the electric heating coil being energized, a feed inlet arranged on the top surface of the furnace body, a cover plate arranged at the feed inlet, a discharge outlet arranged on the bottom surface of the furnace body, a discharge pipe arranged at the discharge outlet, and an on / off valve arranged on the discharge pipe;

[0007] A ventilation assembly is also provided on the top surface of the furnace body. The ventilation assembly includes a ventilation pipe and a filter plate. A ventilation opening is provided on the top surface of the furnace body. Both the filter plate and the ventilation pipe can be detachably installed at the ventilation opening. The ventilation pipe is located on the outside of the filter plate.

[0008] Preferably, the thickness of the filter plate is greater than the thickness of the furnace top wall at the vent. The outer peripheral wall of the filter plate is fitted with the inner peripheral wall of the vent. A connecting ring plate is integrally formed on the peripheral side wall of the top of the filter plate. The bottom surface of the connecting ring plate is fitted with the top surface of the furnace. A dovetail strip is provided on the top surface of the furnace. The dovetail strip is located on both sides of the vent in the radial direction. A dovetail groove is opened on the bottom surface of the filter plate for the dovetail strip to pass through. The dovetail groove penetrates the peripheral side wall of the filter plate. The inner peripheral wall of the ventilation pipe is fitted with the outer peripheral wall of the connecting ring plate.

[0009] Preferably, a connecting plate is provided on the side wall of the ventilation duct, the connecting plate is located on both sides of the ventilation duct in the radial direction, and a connecting bolt is provided on the connecting plate. The connecting bolt passes through the connecting plate and is threadedly connected to the top wall of the furnace body.

[0010] Preferably, an installation groove is provided in the middle of the thickness direction of the filter plate, and an activated carbon bag is provided in the installation groove.

[0011] Preferably, an air outlet pipe is connected to the ventilation pipe, and a fan is connected to the external air outlet pipe. The air inlet of the fan is located at one end close to the ventilation pipe. An air inlet pipe is provided at the top of the side wall of the furnace body, and a one-way valve is provided on the air inlet pipe. The one-way valve allows outside air to enter the furnace body. When the fan vents the furnace body, the one-way valve opens to keep the outside air connected to the inside of the furnace body.

[0012] Preferably, the air outlet pipe is a flexible hose, the ventilation pipe is a rigid pipe, and the end of the air outlet pipe away from the fan is sleeved on the ventilation pipe and welded to the ventilation pipe.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] 1. During the operation of the heat preservation furnace, the ventilation pipe is kept open, and the heavy metal gas is naturally discharged through the air outlet pipe. Before the staff opens the feed port or discharge port, the one-way valve is opened to keep the outside atmosphere connected with the inside of the furnace. Then the fan is turned on to draw air from the inside of the furnace to achieve the effect of ventilation, which greatly reduces the possibility of staff inhaling heavy metal gas and greatly reduces the impact on the health of the staff. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of a heat-preserving furnace for non-ferrous metal smelting in an embodiment of this application.

[0016] Figure 2 This is a top view of the holding furnace for non-ferrous metal smelting, shown after the discharge pipe is hidden in this embodiment of the application.

[0017] Figure 3 This is used to illustrate the embodiments of this application. Figure 1 Enlarged view of point A in the middle.

[0018] Explanation of reference numerals in the attached drawings: 1. Furnace body; 11. Heating chamber; 12. Electric heating coil; 13. Cover plate; 14. Discharge pipe; 15. On / off valve; 16. Ventilation opening; 2. Ventilation assembly; 21. Ventilation pipe; 211. Connecting plate; 212. Connecting bolt; 22. Filter plate; 221. Connecting ring plate; 222. Mounting groove; 223. Activated carbon bag; 3. Dovetail strip; 31. Dovetail groove; 4. Air outlet pipe; 5. Air inlet pipe; 51. One-way valve. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0020] This application discloses a holding furnace device for non-ferrous metal smelting.

[0021] Reference Figure 1-3 The holding furnace for non-ferrous metal smelting includes a furnace body 1. A heating chamber 11 is provided in the periphery of the furnace body 1. An electric heating coil 12 is provided in the heating chamber 11. The electric heating coil 12 is energized and electrically connected to a control system. The control system can control the heating temperature of the furnace body 1 by the electric heating coil 12.

[0022] The top surface of the furnace body 1 is provided with a feed inlet, and a cover plate 13 is provided at the feed inlet. By opening the cover plate 13, material can be fed into the furnace body 1. The bottom surface of the furnace body 1 is provided with a discharge outlet, and a discharge pipe 14 is provided at the discharge outlet. A shut-off valve 15 is provided on the discharge pipe 14. By opening the shut-off valve 15, material can be discharged.

[0023] A ventilation assembly 2 is also provided on the top surface of the furnace body 1. The ventilation assembly 2 includes a ventilation pipe 21 and a filter plate 22. A ventilation opening 16 is provided on the top surface of the furnace body 1. Both the filter plate 22 and the ventilation pipe 21 can be detached and installed at the ventilation opening 16. The ventilation pipe 21 is located on the outside of the filter plate 22.

[0024] The thickness of the filter plate 22 is greater than the thickness of the top wall of the furnace body 1 at the vent 16. The outer peripheral wall of the filter plate 22 is fitted with the inner peripheral wall of the vent 16. A connecting ring plate 221 is integrally arranged on the peripheral side wall of the top of the filter plate 22. The bottom surface of the connecting ring plate 221 is fitted with the top surface of the furnace body 1. A dovetail strip 3 is provided on the top surface of the furnace body 1. The dovetail strip 3 is located on both sides of the vent 16 in the radial direction. A dovetail groove 31 is opened on the bottom surface of the filter plate 22 for the dovetail strip 3 to pass through. The dovetail groove 31 penetrates the peripheral side wall of the filter plate 22. The inner peripheral wall of the ventilation pipe 21 is fitted with the outer peripheral wall of the connecting ring plate 221.

[0025] A connecting plate 211 is provided on the side wall of the ventilation pipe 21. The connecting plate 211 is located on both sides of the ventilation pipe 21 in the radial direction. A connecting bolt 212 is provided on the connecting plate 211. The connecting bolt 212 passes through the connecting plate 211 and is threadedly connected to the top wall of the furnace body 1.

[0026] The ventilation duct 21 and filter plate 22 can be disassembled in sequence for cleaning and replacement to prevent the filter plate 22 from becoming clogged and affecting gas exhaust. To disassemble the ventilation duct 21, simply unscrew the connecting bolt 212. To disassemble the filter plate 22, slide the filter plate 22 until it detaches from the dovetail block.

[0027] An installation groove 222 is provided in the middle of the thickness direction of the filter plate 22. An activated carbon pack 223 is placed in the installation groove 222 to adsorb and filter heavy metal gas, thereby reducing the damage of heavy metal gas to the fan. The activated carbon pack 223 is then removed from the installation groove 222.

[0028] Ventilation duct 21 is connected to an air outlet duct 4, and an external fan is connected to the air outlet duct 4. The air inlet of the fan is located at the end close to the ventilation duct 21. An air inlet duct 5 communicating with the interior of the furnace body 1 is provided on the top of the side wall of the furnace body 1. A one-way valve 51 is provided on the air inlet duct 5. The one-way valve 51 allows the outside air to enter the furnace body 1. When the fan draws air from the interior of the furnace body 1, the one-way valve 51 opens to keep the outside air connected to the interior of the furnace body 1.

[0029] The air outlet duct 4 is a flexible hose, and the ventilation duct 21 is a rigid pipe. The end of the air outlet duct 4 away from the fan is fitted onto the ventilation duct 21 and welded to the ventilation duct 21.

[0030] During the operation of the heat preservation furnace, the ventilation pipe 21 is kept open, and the heavy metal gas is naturally discharged through the air outlet pipe 4. Before the staff opens the feed port or the discharge port, the one-way valve 51 is opened to keep the outside atmosphere connected with the inside of the furnace body 1. Then the fan is turned on to draw air into the inside of the furnace body 1 to achieve the effect of ventilation, which greatly reduces the possibility of staff inhaling heavy metal gas and greatly reduces the impact on the health of staff.

[0031] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A holding furnace for non-ferrous metal smelting, characterized in that: The furnace includes a furnace body (1), a heating chamber (11) is provided in the periphery of the furnace body (1), an electric heating coil (12) is provided in the heating chamber (11), the electric heating coil (12) is energized, a feed inlet is provided on the top surface of the furnace body (1), a cover plate (13) is provided at the feed inlet, a discharge outlet is provided on the bottom surface of the furnace body (1), a discharge pipe (14) is provided at the discharge outlet, and a shut-off valve (15) is provided on the discharge pipe (14). A ventilation assembly (2) is also provided on the top surface of the furnace body (1). The ventilation assembly (2) includes a ventilation pipe (21) and a filter plate (22). A ventilation opening (16) is provided on the top surface of the furnace body (1). Both the filter plate (22) and the ventilation pipe (21) can be detachably installed at the ventilation opening (16). The ventilation pipe (21) is located on the outside of the filter plate (22).

2. The holding furnace for non-ferrous metal smelting according to claim 1, characterized in that: The thickness of the filter plate (22) is greater than the thickness of the top wall of the furnace body (1) at the vent (16). The outer peripheral wall of the filter plate (22) is in contact with the inner peripheral wall of the vent (16). A connecting ring plate (221) is integrally arranged on the peripheral side wall of the top of the filter plate (22). The bottom surface of the connecting ring plate (221) is in contact with the top surface of the furnace body (1). A dovetail strip (3) is provided on the top surface of the furnace body (1). The dovetail strip (3) is located on both sides of the vent (16) in the radial direction. A dovetail groove (31) is opened on the bottom surface of the filter plate (22) for the dovetail strip (3) to pass through. The dovetail groove (31) penetrates the peripheral side wall of the filter plate (22). The inner peripheral wall of the ventilation pipe (21) is in contact with the outer peripheral wall of the connecting ring plate (221).

3. The holding furnace for non-ferrous metal smelting according to claim 1, characterized in that: A connecting plate (211) is provided on the side wall of the ventilation pipe (21). The connecting plate (211) is located on both sides of the ventilation pipe (21) in the radial direction. A connecting bolt (212) is provided on the connecting plate (211). The connecting bolt (212) passes through the connecting plate (211) and is threaded to the top wall of the furnace body (1).

4. The holding furnace for non-ferrous metal smelting according to claim 1, characterized in that: An installation groove (222) is provided in the middle of the thickness direction of the filter plate (22), and an activated carbon bag (223) is provided in the installation groove (222).

5. The holding furnace for non-ferrous metal smelting according to claim 1, characterized in that: The ventilation pipe (21) is connected to an air outlet pipe (4), and the air outlet pipe (4) is connected to a fan. The air inlet of the fan is located at one end close to the ventilation pipe (21). An air inlet pipe (5) is provided on the top of the side wall of the furnace body (1). A one-way valve (51) is provided on the air inlet pipe (5). The one-way valve (51) allows outside air to enter the furnace body (1). When the fan vents the furnace body (1), the one-way valve (51) opens to keep the outside air connected to the inside of the furnace body (1).

6. The holding furnace for non-ferrous metal smelting according to claim 5, characterized in that: The air outlet pipe (4) is a flexible pipe, the ventilation pipe (21) is a rigid pipe, and the end of the air outlet pipe (4) away from the fan is sleeved on the ventilation pipe (21) and welded to the ventilation pipe (21).

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