Anti-oxidation device applied to smelting and pouring process

Abstract

The invention provides a device for preventing oxidation in the smelting and pouring process. The device comprises a gas filling mechanism, a smelting mechanism, a pouring mechanism, a gas generation mechanism and a waste gas treatment mechanism. The gas filling mechanism is adopted for filling the protective atmosphere, the water electrolysis hydrogen production technology is adopted for filling the reducing gas, the reducing gas is mixed with the inert gas to form the protective atmosphere under different working conditions, the content of the protective atmosphere is adjusted according to the production process, the energy-saving performance is improved, the gas can circulate, and the production efficiency is improved. The protective atmosphere is in full contact with the metal surface to improve the anti-oxidation performance, the waste gas treatment mechanism is arranged for conducting follow-up purification treatment on the protective atmosphere, oxygen generated by the gas generation mechanism is used for achieving full combustion of waste gas, purification of harmful gas is achieved, the waste gas treatment effect is improved, and high efficiency of the smelting and pouring process is ensured; and the processing quality of metal products is effectively improved.

Description

Technical Field

[0001] The invention relates to a device for preventing oxidation in a smelting and pouring process, belonging to the technical field of metal smelting. Background Art

[0002] Melting and casting are two common processes in industrial production. They are closely linked and together constitute the transformation process from raw materials to finished products. Melting refers to the process of placing solid metal materials or alloys into a smelting furnace, heating them to reach the melting point and converting them into liquid. The charge is added to the furnace and melted by high temperature. In the electric furnace smelting process, the charge is added from the charging port and moves from top to bottom. It is preheated by the rising high-temperature furnace gas, the temperature rises, and the air blown into the furnace by the blower causes the bottom coke to burn and generate a lot of heat. When the charge falls to the top surface of the bottom coke, it begins to melt; casting is the process of pouring liquid metal or alloy into a mold and getting the desired shape after it cools and solidifies. The molten metal material needs to be poured out of the smelting furnace and poured into a pre-prepared mold through tools such as a ladle. The liquid metal cools in the mold and gradually solidifies into a casting of the desired shape. After the casting is completely cooled, it is taken out of the mold and subsequently processed.

[0003] During the smelting and pouring process, metal raw materials can easily react with oxygen in the air at high temperatures to form oxides. For example, iron will generate iron oxide (Fe2O3) during the smelting process, which will not only lead to metal loss, but also affect the quality of the final product, such as reducing the strength, hardness and surface finish of the casting. Therefore, a protective atmosphere is needed to isolate oxygen and ensure that the smelting and pouring processes are carried out in an oxygen-free or low-oxygen environment. However, the required content of protective atmosphere during the smelting and pouring of metal raw materials may be different. It is not easy to fill the protective atmosphere according to actual production needs, and it is difficult to fully cover the protective atmosphere, which affects the reduction performance. When isolated by the protective atmosphere, it will also cause difficulties in the smelting and pouring operations, thereby affecting the production efficiency and production quality of metal smelting and pouring. Summary of the invention

[0004] In order to solve the technical problem that metal is easily oxidized during smelting and pouring, the present invention provides a device for preventing oxidation during the smelting and pouring process.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] The present invention provides a device for preventing oxidation during smelting and pouring, and the device for preventing oxidation during smelting and pouring comprises:

[0007] A gas filling mechanism, the gas filling mechanism is composed of a gas tank, a flow guide cover is fixedly installed on the top edge of the gas tank, and a feeding mechanism is provided on the top of the gas tank;

[0008] A smelting mechanism, the smelting mechanism is composed of a bottom plate and a smelting crucible, the bottom plate is fixedly connected to the smelting crucible through a bracket, the gas filling mechanism is installed on the surface of the bottom plate, and the smelting crucible is located inside the gas tank and distributed corresponding to the flow guide cover, and a gap for gas circulation is formed between the flow guide cover and the gas tank, and a material discharge mechanism is provided at the bottom of the smelting crucible;

[0009] A pouring mechanism, which is fixedly mounted to the inner wall of the leg and is correspondingly arranged on the bottom surface of the feeding mechanism;

[0010] The gas generating mechanism and the exhaust gas treatment mechanism are fixedly mounted on both sides of the bottom plate, and the gas generating mechanism is communicated with the gas filling mechanism and the exhaust gas treatment mechanism respectively.

[0011] In the present technical solution, the feeding mechanism includes a top cover, which is engaged and plugged with the top of the gas tank, and a plurality of evenly distributed lugs are fixedly installed on the edge of the top of the gas tank, and a hydraulic cylinder is fixedly installed at the bottom of each lug, and the telescopic end of the hydraulic cylinder passes through the lug and is fixedly connected to the side plate, and the side plate is fixedly connected to the edge of the top cover, and the top cover is sealedly connected to the inside of the circular hole opened in the top of the gas tank, and the outer wall of the bottom of the gas tank is sealedly connected with a sealing cover, and a casting template is provided inside the gas tank on one side of the sealing cover, and the casting template is located on the surface of the bottom plate.

[0012] In the present technical solution, the smelting crucible is arranged correspondingly below the circular hole of the gas tank, and a plurality of evenly distributed brackets are provided at the bottom of the smelting crucible, and the top of each bracket is fixedly connected to the heater chamber, and the heater chamber is fixedly installed to the bottom of the smelting crucible. The heater chamber is an annular structure and a guide groove is formed in the middle. A heating induction coil is installed inside the heater chamber, and a flow chamber is fixedly installed at the bottom of the heater chamber for guiding the molten metal after smelting.

[0013] In the present technical solution, a driving motor is fixedly installed on the outer wall of the flow chamber, the output end of the driving motor is fixedly connected to the rotating shaft, the rotating shaft is rotatably connected to the inner wall of the flow chamber, a sealing plate is fixedly connected to the middle of the rotating shaft, the rotating shaft is correspondingly arranged on one side of the bottom of the guide groove, and the sealing plate is sealed and engaged with the bottom of the guide groove.

[0014] In the present technical solution, the casting mechanism includes a panel and a ring, both of which are annular structures, the panel is fixedly connected to the inner walls of multiple brackets, the ring is embedded in the panel, the cross-sections of the panel and the ring are L-shaped structures, and the top edge of the ring is provided with a tooth groove, the outer wall of the panel is fixedly installed with a rotating motor, the output end of the rotating motor is fixedly connected to the gear, and the gear is meshingly connected to the ring gear.

[0015] In the present technical solution, a translation motor is fixedly installed inside the gear ring, and the output end of the translation motor is fixedly connected to a lead screw. There are two lead screws and they are symmetrically distributed on both sides of the bottom of the flow chamber. The two lead screws are rotatably connected to the inner wall of the ring, and each end of the lead screw is fixedly connected to a pulley. The two pulleys are connected by a belt drive, and the two lead screws are connected to the internal threads of the slider. The slider is fixedly connected to the bottom of the casting plate, and the casting plate is sealed and fitted with the bottom of the flow chamber. A pouring nozzle for the flow of liquid metal is provided in the middle of the casting plate, and the pouring nozzle is correspondingly arranged above the casting template.

[0016] In the present technical solution, the gas generating mechanism includes an electrolytic cell, which is fixedly mounted to one side of a bottom plate, and a plurality of proton exchange membranes are fixedly connected inside the electrolytic cell, one end of the top of the electrolytic cell is fixedly connected to a hydrogen delivery pipe, the bottom of the hydrogen delivery pipe is fixedly connected to a regulating valve, the top of the hydrogen delivery pipe is fixedly connected to a top cover, and a circulation pump located outside a gas tank is fixedly mounted on the top surface of the bottom plate, the circulation pump is connected to the bottom of the gas tank, and the circulation pump is connected to the top of the top cover through a circulation pipe.

[0017] In the present technical solution, an inert gas tank is fixedly installed on the surface of the bottom plate, and the inert gas tank is connected to the top of the top cover through a gas delivery pipe. The inside of the top cover is fixedly connected to the first annular tube and the second annular tube respectively, one end of the first annular tube is connected to the circulation pipe, and the second annular tube is connected to the gas delivery pipe.

[0018] In the present technical solution, the exhaust gas treatment mechanism is composed of a filter, which is fixedly installed on one side of the bottom plate, a filter element is fixedly connected inside the filter, a cover plate is hinged on the outer wall of the filter located on one side of the filter element, a dryer is fixedly installed on one side of the filter, the dryer is connected to a negative pressure pump, the negative pressure pump is fixedly installed to the outside of the dryer on the top surface of the bottom plate, the dryer is filled with a desiccant, the desiccant is composed of one or more of silica gel, molecular sieve and moisture-absorbing cotton, and the negative pressure pump is fixedly connected to the bottom of the gas tank through a connecting pipe.

[0019] In the present technical solution, a treatment tank is fixedly installed on the surface of the bottom plate, the treatment tank is located on one side of the filter, the bottom of the treatment tank is connected to the filter, the bottom of the treatment tank is connected to the electrolytic cell through an oxygen delivery pipe, the oxygen delivery pipe is fixedly connected to the storage tank installed on the surface of the bottom plate, and the oxygen delivery pipe and the hydrogen delivery pipe are respectively located on both sides of the electrolytic cell.

[0020] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0021] The positive and progressive effects of the present invention are:

[0022] The above-mentioned device for preventing oxidation during smelting and pouring adopts a gas filling mechanism to fill the protective atmosphere, so that the protective gas fills the surface of the smelting and pouring device, so that the metal can always be in the protective atmosphere during the smelting and pouring process after being put into the metal, and adopts water electrolysis hydrogen production technology to fill the reducing gas, which is filled together with the inert gas during the pouring process to play a protective role, and the protective atmosphere content is adjusted according to the production process to improve the energy-saving performance. During the anti-oxidation protection process, the protective atmosphere can circulate between the gas tank and the smelting crucible and can fully contact with the metal, thereby improving the anti-oxidation performance during the smelting process, and is adjusted during the pouring process to ensure the pouring efficiency. It is suitable for filling in multiple pouring models, and an exhaust gas treatment mechanism is provided for subsequent purification of the protective atmosphere. The oxygen generated by the gas generating mechanism is used to achieve full combustion of the exhaust gas, purification of harmful gases, and improvement of the exhaust gas treatment effect. The emission meets the standards, ensures the efficiency of the smelting and pouring process, and effectively improves the processing quality of metal products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the processing tank of the present invention.

[0025] Figure 3 It is a half-section three-dimensional structural schematic diagram of the smelting mechanism of the present invention.

[0026] Figure 4 It is a schematic diagram of the half-section three-dimensional structure of the melting crucible of the present invention.

[0027] Figure 5 For the present invention Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0028] Figure 6 It is a semi-sectioned three-dimensional structural schematic diagram of the casting mechanism of the present invention.

[0029] Figure 7 It is a schematic diagram of the top view of the flow chamber of the present invention.

[0030] Figure 8 It is a schematic diagram of the external front view structure of the present invention.

[0031] Fig. 9 This is a front view structural schematic diagram of the processing tank of the present invention.

[0032] Fig.10 It is a schematic diagram of the external top view structure of the present invention.

[0033] Description of Reference Numerals

[0034] 100, gas filling mechanism; 101, gas tank; 102, top cover; 103, side plate; 104, lug; 105, hydraulic cylinder; 106, deflector; 107, cover;

[0035] 200, smelting mechanism; 201, bottom plate; 202, bracket; 203, smelting crucible; 204, heater chamber; 205, flow chamber; 206, guide groove; 207, driving motor; 208, rotating shaft; 209, sealing plate;

[0036] 300, casting mechanism; 301, enclosure; 302, enclosure; 303, tooth groove; 304, rotating motor; 305, gear; 306, translation motor; 307, lead screw; 308, pulley; 309, belt; 310, slider; 311, casting plate;

[0037] 400, gas generating mechanism; 401, electrolytic cell; 402, hydrogen delivery pipe; 403, regulating valve; 404, circulation pump; 405, circulation pipe; 406, first annular pipe; 407, inert gas tank; 408, gas delivery pipe; 409, second annular pipe;

[0038] 500, waste gas treatment mechanism; 501, filter; 502, cover plate; 503, dryer; 504, negative pressure pump; 505, connecting pipe; 506, treatment tank; 507, oxygen delivery pipe. DETAILED DESCRIPTION

[0039] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0040] like Figure 1-10 As shown, the device for preventing oxidation during smelting and pouring comprises:

[0041] A gas filling mechanism 100, the gas filling mechanism 100 is composed of a gas tank 101, a flow guide cover 106 is fixedly installed on the top edge of the gas tank 101, and a feeding mechanism is provided on the top of the gas tank 101;

[0042] The smelting mechanism 200 is composed of a bottom plate 201 and a smelting crucible 203. The bottom plate 201 is fixedly connected to the smelting crucible 203 through a bracket 202. The gas filling mechanism 100 is installed on the surface of the bottom plate 201. The smelting crucible 203 is located inside the gas tank 101 and distributed corresponding to the flow guide cover 106. A gap for gas circulation is formed between the flow guide cover 106 and the gas tank 101. A material discharge mechanism is provided at the bottom of the smelting crucible 203.

[0043] A pouring mechanism 300, wherein the pouring mechanism 300 is fixedly mounted to the inner wall of the leg, and the pouring mechanism 300 is correspondingly arranged on the bottom surface of the feeding mechanism;

[0044] The gas generating mechanism 400 and the exhaust gas treatment mechanism 500 are fixedly installed on both sides of the bottom plate 201, and the gas generating mechanism 400 is connected to the gas filling mechanism 100 and the exhaust gas treatment mechanism 500 respectively.

[0045] The feeding mechanism includes a top cover 102, which is engaged and plugged with the top of the gas tank 101. A plurality of evenly distributed lugs 104 are fixedly installed on the top edge of the gas tank 101, and a hydraulic cylinder 105 is fixedly installed at the bottom of each lug 104. The telescopic end of the hydraulic cylinder 105 passes through the lug 104 and is fixedly connected to the side plate 103. The side plate 103 is fixedly connected to the edge of the top cover 102, and the top cover 102 is sealedly connected to the inside of a circular hole opened at the top of the gas tank 101. The outer wall of the bottom of the gas tank 101 is sealedly connected with a sealing cover 107. A casting template is provided inside the gas tank 101 on one side of the sealing cover 107, and the casting template is located on the surface of the bottom plate 201.

[0046] In the present technical solution, the gas tank 101 allows the smelting mechanism 200 and the pouring mechanism 300 to be located inside, and a protective atmosphere can be filled inside the gas tank 101 to protect the metal during the smelting and pouring process. Before smelting, the hydraulic cylinder 105 is started to push the side plate 103 and the top cover 102 to lift up. When the metal is put in, the metal falls from the deflector 106 to the inside of the smelting crucible 203, and then the top cover 102 is pressed by the hydraulic cylinder 105 on the lug 104, so that the top cover 102 is tightly fitted to the top of the gas tank 101 to improve the sealing performance and avoid leakage of the protective atmosphere. The sealing cover 107 is opened to place the pouring template so that it corresponds to the pouring mechanism 300, which facilitates the filling and pouring of the metal liquid.

[0047] The smelting crucible 203 is correspondingly arranged below the circular hole of the gas tank 101, and a plurality of evenly distributed brackets 202 are arranged at the bottom of the smelting crucible 203, and the top of each bracket 202 is fixedly connected to the heater chamber 204, and the heater chamber 204 is fixedly installed to the bottom of the smelting crucible 203, the heater chamber 204 is an annular structure and a guide groove 206 is formed in the middle, a heating induction coil is installed inside the heater chamber 204, and a flow chamber 205 is fixedly installed at the bottom of the heater chamber 204 for guiding the molten metal after smelting; a driving motor 207 is fixedly installed on the outer wall of the flow chamber 205, and the output end of the driving motor 207 is fixedly connected to a rotating shaft 208, and the rotating shaft 208 is rotatably connected to the inner wall of the flow chamber 205, and a sealing plate 209 is fixedly connected to the middle of the rotating shaft 208, and the rotating shaft 208 is correspondingly arranged on one side of the bottom of the guide groove 206, and the sealing plate 209 is sealed and embedded with the bottom of the guide groove 206.

[0048] In the present technical solution, the smelting crucible 203 is stably installed by the bracket 202, so that the smelting crucible 203 is located inside the gas tank 101, and the metal is heated by the heating induction coil inside the heater chamber 204 to melt it. At this time, the sealing plate 209 is tightly fitted with the bottom of the flow chamber 205. After the metal located in the guide groove 206 and the inside of the smelting crucible 203 is melted into liquid, the external driving motor 207 is started to drive the sealing plate 209 to rotate through the rotating shaft 208. The sealing plate 209 is opened to allow the metal liquid to flow into the flow chamber 205, and is retained inside the casting plate 311 through the bottom of the flow chamber 205.

[0049] The casting mechanism 300 includes a panel 301 and a ring 302, both of which are annular structures. The panel 301 is fixedly connected to the inner walls of multiple brackets 202, and the ring 302 is embedded in the panel 301. The cross-sections of the panel 301 and the ring 302 are both L-shaped structures, and the top edge of the ring 302 is provided with a tooth groove 303. A rotating motor 304 is fixedly installed on the outer wall of the panel 301, and the output end of the rotating motor 304 is fixedly connected to a gear 305, and the gear 305 is meshed with the gear ring; a translation motor 306 is fixedly installed inside the gear ring, and the output of the translation motor 306 is fixedly connected to the gear ring. The ends are fixedly connected to the lead screw 307, there are two lead screws 307 and they are symmetrically distributed on both sides of the bottom of the flow chamber 205, the two lead screws 307 are rotatably connected to the inner wall of the circle 302, the end of each lead screw 307 is fixedly connected to the pulley 308, the two pulleys 308 are connected by a belt 309, the two lead screws 307 are connected to the internal threads of the slider 310, the slider 310 is fixedly connected to the bottom of the casting plate 311, the casting plate 311 is sealed and fitted with the bottom of the flow chamber 205, and a casting nozzle for the flow of molten metal is opened in the middle of the casting plate 311, and the casting nozzle is correspondingly arranged above the casting template.

[0050] In the present technical solution, during the pouring process, the translation motor 306 is started to drive the lead screw 307 to rotate inside the enclosure 302. When the lead screw 307 drives the slider 310 to move, the slider 310 drives the casting plate 311 to move at the bottom of the flow chamber 205, so that the casting nozzle of the casting plate 311 adjusts its position and corresponds to the casting mold, so that the metal liquid can be retained in the corresponding groove of the casting mold. At the same time, the rotating motor 304 can drive the gear 305 to rotate when working, and the cooperation between the gear 305 and the tooth groove 303 drives the enclosure 302 to rotate inside the enclosure 301, so that the enclosure 302 drives the lead screw 307 and the casting plate 311 to rotate at the same time, and the position adjustment of the casting plate 311 realizes casting at different positions, and can be quickly adjusted according to the casting needs to realize the filling of multiple grooves in the casting mold, thereby improving production efficiency.

[0051] The gas generating mechanism 400 includes an electrolytic cell 401, which is fixedly mounted on one side of the bottom plate 201, and a plurality of proton exchange membranes are fixedly connected inside the electrolytic cell 401. One end of the top of the electrolytic cell 401 is fixedly connected to a hydrogen delivery pipe 402, and the bottom of the hydrogen delivery pipe 402 is fixedly connected to a regulating valve 403, and the top of the hydrogen delivery pipe 402 is fixedly connected to the top cover 102. A circulating pump 404 located outside the gas tank 101 is fixedly mounted on the top surface of the bottom plate 201. The circulation pump 404 is connected to the bottom of the gas tank 101, and the circulation pump 404 is connected to the top of the top cover 102 through the circulation pipe 405; an inert gas tank 407 is fixedly installed on the surface of the bottom plate 201, and the inert gas tank 407 is connected to the top of the top cover 102 through the gas delivery pipe 408, and the inside of the top cover 102 is fixedly connected to the first annular pipe and the second annular pipe 409 respectively, one end of the first annular pipe is connected to the circulation pipe 405, and the second annular pipe 409 is connected to the gas delivery pipe 408.

[0052] In the present technical solution, when the positive and negative motors in the electrolytic cell 401 are powered on, water molecules lose electrons at the anode to undergo an oxidation reaction to generate oxygen, and gain electrons at the cathode to undergo a reduction reaction to generate hydrogen. The hydrogen is transported to the inside of the top cover 102 through the hydrogen delivery pipe 402, and after entering the inside of the melting crucible 203, it is transported to the inside of the gas tank 101 through the gap between the top edge of the melting crucible 203 and the flow guide cover 106, and the protective atmosphere is transported to the bottom of the gas tank 101 through the circulation pump 404 at the bottom, and is re-delivered to the inside of the melting crucible 203 through the circulation pipe 405.

[0053] Specifically, after the hydrogen generated by electrolysis in the electrolytic cell 401 fills the gas tank 101, the power supply of the electrolytic cell 401 is turned off, and the regulating valve 403 is closed. At this time, when the circulating pump 404 works to circulate the hydrogen, the gas is formed into a spiral gas inside the top cover 102 by using the first annular tube, and the gas is circulated to the middle of the melting crucible 203 through the cooperation of the flow guide cover 106, so that the gas is fully contacted with the metal and then discharged from the edge of the melting crucible 203, and the metal is smelted during the gas transportation process; after the smelting is completed, part of the protective atmosphere is extracted by the negative pressure pump 504, and the inert gas is transported to the inside of the melting crucible 203 through the gas delivery pipe 408 through the inert gas tank 407, and the inert gas and hydrogen are circulated in the same direction through the second annular tube 409 and fully mixed, and circulated and transported through the circulating pump 404, so that the protective atmosphere formed by the inert gas and hydrogen is protected against oxidation during the casting process, and the ratio of the protective atmosphere can be adjusted as needed.

[0054] The exhaust gas treatment mechanism 500 is composed of a filter 501, which is fixedly installed on one side of the bottom plate 201. A filter element is fixedly connected inside the filter 501. A cover plate 502 is hingedly connected to the outer wall of the filter 501 located on one side of the filter element. A dryer 503 is fixedly installed on one side of the filter 501. The dryer 503 is connected to a negative pressure pump 504. The negative pressure pump 504 is fixedly installed on the outside of the dryer 503 on the top surface of the bottom plate 201. The dryer 503 is filled with a desiccant, which is a mixture of silica gel, molecular sieve and moisture-absorbing cotton. One or more components, and the negative pressure pump 504 is fixedly connected to the bottom of the gas tank 101 through a connecting pipe 505; a processing tank 506 is fixedly installed on the surface of the bottom plate 201, and the processing tank 506 is located on one side of the filter 501. The bottom of the processing tank 506 is connected to the filter 501, and the bottom of the processing tank 506 is connected to the electrolytic cell 401 through an oxygen delivery pipe 507. The oxygen delivery pipe 507 is fixedly connected to a storage tank installed on the surface of the bottom plate 201, and the oxygen delivery pipe 507 and the hydrogen delivery pipe 402 are respectively located on both sides of the electrolytic cell 401.

[0055] In the present technical solution, after pouring and molding, the protective atmosphere is transported to the dryer 503 through the connecting pipe 505 by the negative pressure pump 504, and the water vapor in the exhaust gas is absorbed and then enters the filter 501, and the dust in the exhaust gas is filtered by the filter element in the filter 501, so that the exhaust gas enters the treatment tank 506, and the oxygen generated during the electrolysis in the smelting and pouring process is collected and stored in the storage tank, and the oxygen is transported to the treatment tank 506 during the exhaust gas treatment process, and the exhaust gas is burned in the treatment tank 506, so that the combustible gases such as hydrogen and carbon monoxide in the exhaust gas are fully burned, thereby achieving the purification of the exhaust gas.

[0056] The present invention is not limited to the above-mentioned embodiments. Any changes in shape or structure are within the protection scope of the present invention. The protection scope of the present invention is defined by the attached claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications are within the protection scope of the present invention.

Claims

1. A device for preventing oxidation during smelting and pouring, characterized in that: The device for preventing oxidation during smelting and pouring comprises: A gas filling mechanism (100), the gas filling mechanism (100) being composed of a gas tank (101), a flow guide cover (106) being fixedly mounted on the top edge of the gas tank (101), and a feeding mechanism being arranged on the top of the gas tank (101); A smelting mechanism (200), the smelting mechanism (200) comprising a bottom plate (201) and a smelting crucible (203), the bottom plate (201) being fixedly connected to the smelting crucible (203) via a bracket (202), the gas filling mechanism (100) being mounted on the surface of the bottom plate (201), the smelting crucible (203) being located inside the gas tank (101) and being distributed correspondingly to the flow guide cover (106), and a gap for gas circulation being formed between the flow guide cover (106) and the gas tank (101), and a material discharge mechanism being provided at the bottom of the smelting crucible (203); A pouring mechanism (300), wherein the pouring mechanism (300) is fixedly mounted to the inner wall of the leg, and the pouring mechanism (300) is correspondingly arranged on the bottom surface of the material discharge mechanism; A gas generating mechanism (400) and an exhaust gas treatment mechanism (500), wherein the gas generating mechanism (400) and the exhaust gas treatment mechanism (500) are fixedly mounted on both sides of a bottom plate (201), and the gas generating mechanism (400) is respectively connected to a gas filling mechanism (100) and an exhaust gas treatment mechanism (500).

2. A device for preventing oxidation during smelting and pouring as claimed in claim 1, characterized in that: The feeding mechanism comprises a top cover (102), the top cover (102) is inserted and engaged with the top of the gas tank (101), a plurality of evenly distributed lugs (104) are fixedly mounted on the top edge of the gas tank (101), a hydraulic cylinder (105) is fixedly mounted on the bottom of each lug (104), a telescopic end of the hydraulic cylinder (105) passes through the lug (104) and is fixedly connected to a side plate (103), the side plate (103) is fixedly connected to the edge of the top cover (102), and the top cover (102) is sealedly connected to the inside of a circular hole opened on the top of the gas tank (101), a sealing cover (107) is sealedly connected to the outer wall of the bottom of the gas tank (101), a casting template is provided inside the gas tank (101) on one side of the sealing cover (107), and the casting template is located on the surface of the bottom plate (201).

3. A device for preventing oxidation during smelting and pouring as claimed in claim 1, characterized in that: The smelting crucible (203) is arranged correspondingly below the circular hole of the gas tank (101); a plurality of evenly distributed brackets (202) are arranged at the bottom of the smelting crucible (203); the top of each bracket (202) is fixedly connected to a heater chamber (204); and the heater chamber (204) is fixedly installed to the bottom of the smelting crucible (203); the heater chamber (204) is an annular structure and a guide groove (206) is formed in the middle; a heating induction coil is installed inside the heater chamber (204); and a flow chamber (205) is fixedly installed at the bottom of the heater chamber (204) for guiding the molten metal after smelting.

4. A device for preventing oxidation during smelting and pouring as claimed in claim 3, characterized in that: A driving motor (207) is fixedly mounted on the outer wall of the flow chamber (205); the output end of the driving motor (207) is fixedly connected to a rotating shaft (208); the rotating shaft (208) is rotatably connected to the inner wall of the flow chamber (205); a sealing plate (209) is fixedly connected to the middle of the rotating shaft (208); the rotating shaft (208) is correspondingly arranged on one side of the bottom of the guide groove (206), and the sealing plate (209) is sealingly engaged with the bottom of the guide groove (206).

5. The device for preventing oxidation during smelting and pouring as claimed in claim 1, characterized in that: The casting mechanism (300) comprises a panel (301) and a ring (302), wherein the panel (301) and the ring (302) are both annular structures, the panel (301) is fixedly connected to the inner walls of a plurality of brackets (202), the ring (302) is embedded in the panel (301), the cross-sections of the panel (301) and the ring (302) are both L-shaped structures, and a tooth groove (303) is provided on the top edge of the ring (302), a rotating motor (304) is fixedly installed on the outer wall of the panel (301), the output end of the rotating motor (304) is fixedly connected to a gear (305), and the gear (305) is meshingly connected to the gear ring.

6. A device for preventing oxidation during smelting and pouring as claimed in claim 5, characterized in that: A translation motor (306) is fixedly installed inside the gear ring. The output end of the translation motor (306) is fixedly connected to a lead screw (307). There are two lead screws (307) and they are symmetrically distributed on both sides of the bottom of the flow chamber (205). The two lead screws (307) are rotatably connected to the inner wall of the ring (302). The end of each lead screw (307) is fixedly connected to a pulley (308). The two pulleys (308) are connected by a belt (309). The two lead screws (307) are threadedly connected to the inside of a slider (310). The slider (310) is fixedly connected to the bottom of a casting plate (311). The casting plate (311) is sealed and fitted with the bottom of the flow chamber (205). A pouring nozzle for the flow of metal liquid is provided in the middle of the casting plate (311), and the pouring nozzle is correspondingly arranged above the casting template.

7. The device for preventing oxidation during smelting and pouring as claimed in claim 1, characterized in that: The gas generating mechanism (400) comprises an electrolytic cell (401), wherein the electrolytic cell (401) is fixedly mounted on one side of a bottom plate (201), wherein a plurality of proton exchange membranes are fixedly connected inside the electrolytic cell (401), wherein one end of the top of the electrolytic cell (401) is fixedly connected to a hydrogen delivery pipe (402), wherein the bottom of the hydrogen delivery pipe (402) is fixedly connected to a regulating valve (403), wherein the top of the hydrogen delivery pipe (402) is fixedly connected to a top cover (102), and a circulation pump (404) located outside a gas tank (101) is fixedly mounted on the top surface of the bottom plate (201), wherein the circulation pump (404) is connected to the bottom of the gas tank (101), and wherein the circulation pump (404) is connected to the top of the top cover (102) via a circulation pipe (405).

8. A device for preventing oxidation during smelting and pouring as claimed in claim 7, characterized in that: An inert gas tank (407) is fixedly mounted on the surface of the bottom plate (201); the inert gas tank (407) is connected to the top of the top cover (102) via a gas delivery pipe (408); the inside of the top cover (102) is fixedly connected to a first annular tube and a second annular tube (409), respectively; one end of the first annular tube is connected to a circulation pipe (405), and the second annular tube (409) is connected to the gas delivery pipe (408).

9. The device for preventing oxidation during smelting and pouring as claimed in claim 1, characterized in that: The exhaust gas treatment mechanism (500) is composed of a filter (501), the filter (501) is fixedly mounted on one side of the bottom plate (201), a filter element is fixedly connected inside the filter (501), a cover plate (502) is hingedly connected to the outer wall of the filter (501) located on one side of the filter element, a dryer (503) is fixedly mounted on one side of the filter (501), the dryer (503) is connected to a negative pressure pump (504), the negative pressure pump (504) is fixedly mounted on the outside of the dryer (503) on the top surface of the bottom plate (201), the dryer (503) is filled with a desiccant, the desiccant is composed of one or more of silica gel, molecular sieve and moisture-absorbing cotton, and the negative pressure pump (504) is fixedly connected to the bottom of the gas tank (101) through a connecting pipe (505).

10. A device for preventing oxidation during smelting and pouring as claimed in claim 9, characterized in that: A treatment tank (506) is fixedly mounted on the surface of the bottom plate (201), the treatment tank (506) is located on one side of the filter (501), the bottom of the treatment tank (506) is connected to the filter (501), the bottom of the treatment tank (506) is connected to the electrolytic cell (401) via an oxygen delivery pipe (507), the oxygen delivery pipe (507) is fixedly connected to a storage tank mounted on the surface of the bottom plate (201), and the oxygen delivery pipe (507) and the hydrogen delivery pipe (402) are respectively located on both sides of the electrolytic cell (401).

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