Metal melt refining equipment

Abstract

The utility model relates to the technical field of metal melt refining, in particular to metal melt refining equipment which comprises a base, a mounting seat is arranged in the top of the base, a cavity is formed in the top of the mounting seat, a refining furnace is arranged in the cavity, the top of the refining furnace is fixed to the inner wall of the cavity, and an air brick is arranged at the bottom of the refining furnace. A plurality of vent pipes which are arranged at intervals are arranged on the outer wall of the refining furnace, the bottoms of the vent pipes are bent to be in an L shape and connected with one another, air outlets are further formed in the bottoms of the vent pipes, and the tops of the vent pipes are installed on an annular connecting pipe. When the metal melt refining equipment is used, inert gas introduced into the vent pipe is heated through the heating piece wound on the vent pipe, so that the inert gas does not absorb heat to the metal melt in the refining furnace after entering the refining furnace, the inert gas is prevented from expanding in the metal melt, and the metal melt is prevented from entering the refining furnace. The degassing efficiency of the inert gas on the metal melt is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal melt refining, in particular to a metal melt refining device. Background Art

[0002] After melting metal, some gases will be doped in the metal melt. Therefore, before using and processing the metal melt, it is necessary to refine the metal melt.

[0003] Most of the existing metal melt refining is to stir the metal melt with a graphite rotor, and introduce an inert gas into the metal melt from the graphite rotor. The inert gas entering the metal melt will form bubbles and gradually float up, so as to bring out the gas atoms dissolved in the melt, thus achieving the degassing effect.

[0004] However, during the metal melt refining process, the inert gas introduced into the metal melt will expand due to the heat of the metal melt, and the heated bubbles will reduce the temperature of the melt, which will affect the floating of the bubbles and the degassing refining efficiency; and the too large volume of the bubbles will also affect the actual contact between the bubbles and the melt, wasting the inert gas and slowing down the refining efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the above-mentioned disadvantages in the prior art, and to provide a metal melt refining device.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: design a metal melt refining device, including a base, an installation seat is arranged inside the top of the base, and a cavity is opened inside the top of the installation seat. A refining furnace is arranged inside the cavity. The top of the refining furnace is fixed to the inner wall of the cavity, and a permeable brick is arranged at the bottom of the refining furnace;

[0007] A plurality of spaced-apart tracheas are arranged on the outer wall of the refining furnace. The bottom of the trachea is bent into an "L" shape and connected to each other. An air outlet is also arranged at the bottom of the trachea. The top of the trachea is installed on an annular connecting pipe, and one side of the connecting pipe is connected to a gas adding pipe, and the gas adding pipe penetrates through the installation seat;

[0008] The trachea is a heat-conducting pipe, and a heating element is arranged on the trachea. The heating element is spirally wound around the trachea.

[0009] Preferably, the top of the refining furnace is fixed to the installation seat through a sealing plate.

[0010] Preferably, a sealing cover is arranged on the top of the refining furnace, and a lifting frame is installed on the sealing cover;

[0011] A rotating tube is provided in the middle of the sealing cover. The rotating tube penetrates through the sealing cover and the two are rotatably connected. A driving motor is connected to the top of the rotating tube. The driving motor is fixed to the sealing cover through a bracket, and a graphite stirring shaft is connected to the bottom of the rotating tube. A graphite rotor is installed at the bottom of the graphite stirring shaft.

[0012] Preferably, the lifting frame includes a plurality of lifting mechanisms arranged at intervals. The lifting mechanisms are inclined at the edge of the sealing cover, and the ends of the lifting mechanisms are rotatably installed in the U-shaped seats. One of the U-shaped seats is fixed to the sealing cover, and the other U-shaped seat is fixed to the base.

[0013] Preferably, a sleeve is sleeved on the rotating tube, and the end of the sleeve is rotatably connected to the rotating tube. A through hole for communicating with the sleeve is provided on the rotating tube, and a conduit is connected to the side of the sleeve.

[0014] Preferably, a heat insulation plate is installed at the bottom of the sealing cover.

[0015] Preferably, a pressure relief valve is further provided on the sealing cover.

[0016] The design scheme proposed by the present utility model has the following beneficial effects during application:

[0017] 1. The metal melt refining equipment heats the inert gas introduced into the ventilation pipe through the heating element wound around the ventilation pipe, so that the inert gas will not absorb heat from the metal melt in the refining furnace after entering the refining furnace, preventing the inert gas from expanding in the metal melt and affecting the degassing efficiency of the inert gas on the metal melt.

[0018] 2. The metal melt refining equipment separately heats the inert gas through the arrangement of multiple ventilation pipes, thereby improving the temperature rising rate of the inert gas, so that the inert gas can reach a higher temperature in a short time, and further reducing the heat absorption effect of the inert gas on the metal melt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;

[0021] Figure 3 is a front view of the schematic cross-sectional structure of the present utility model;

[0022] Figure 4 is a schematic structural diagram of the bottom of the refining furnace of the present utility model.

[0023] In the figure: 1, base; 2, mounting seat; 3, cavity; 4, refining furnace; 5, ventilation pipe; 6, connecting pipe; 7, gas filling pipe; 8, heating element; 9, air outlet; 10, sealing cover; 11, lifting mechanism; 12, U-shaped seat; 13, rotating pipe; 14, driving motor; 15, graphite stirring shaft; 16, graphite rotor; 17, sleeve; 18, conduit; 19, pressure relief valve; 20, porous plug. Specific implementation manner

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] Refer to Figures 1-4 , a metal melt refining device, including a base 1, a mounting seat 2 is arranged inside the top of the base 1, and a cavity 3 is opened inside the top of the mounting seat 2. A refining furnace 4 is arranged inside the cavity 3. The top of the refining furnace 4 is fixed to the inner wall of the cavity 3, that is, the top of the refining furnace 4 is fixed to the mounting seat 2 through a sealing plate, so that the cavity 3 forms a closed chamber; in the actual use process, the sealing plate is fixed to the mounting seat 2 through fasteners such as bolts, so that the sealing plate is detachably installed on the mounting seat 2, so as to take out the refining furnace 4 from the cavity 3.

[0026] During use, a porous plug 20 is arranged at the bottom of the refining furnace 4, so that the gas below the refining furnace 4 can pass through the porous plug 20 and enter the refining furnace 4.

[0027] As Figure 3 and Figure 4 shown, a plurality of ventilation pipes 5 arranged at intervals are arranged on the outer wall of the refining furnace 4. The bottom of the ventilation pipe 5 is bent in an "L" shape and connected to each other. An air outlet 9 is also arranged at the bottom of the ventilation pipe 5. The top of the ventilation pipe 5 is installed on the annular connecting pipe 6, and one side of the connecting pipe 6 is connected with a gas filling pipe 7. The gas filling pipe 7 penetrates through the mounting seat 2. After the metal melt is placed in the refining furnace 4, an inert gas is added from the gas filling pipe 7. The inert gas will be split into each ventilation pipe 5 through the connecting pipe 6. The ventilation pipe 5 is a heat-conducting pipe, and a heating element 8 is arranged on the ventilation pipe 5. The heating element 8 is spirally wound around the ventilation pipe 5. In the actual use process, the heating element 8 is one of a heating wire and a heating cable. After the inert gas flows into the ventilation pipe 5, it will be heated by the heating element 8, so that the inert gas remains at a high temperature after passing through the porous plug 20 and entering the refining furnace 4, and will not excessively absorb the heat of the metal melt, thereby affecting the formation of bubbles in the inert gas in the metal melt to take away the gas atoms in the metal melt.

[0028] Specifically, the setting of multiple vent pipes 5 separates the heating of the inert gas, thereby improving the heating rate of the inert gas, enabling the inert gas to be heated to the required temperature within a short time and used, and further enhancing the use effect of the inert gas.

[0029] As Figure 1 and Figure 2 shown in the figure, a sealing cover 10 is provided at the top of the refining furnace 4. A lifting frame is installed on the sealing cover 10. The lifting frame includes a number of lifting mechanisms 11 arranged at intervals. The lifting mechanisms 11 are inclined and arranged at the edge of the sealing cover 10, and the ends of the lifting mechanisms 11 are rotatably installed in the U-shaped seats 12. One of the U-shaped seats 12 is fixed on the sealing cover 10, and the other U-shaped seat 12 is fixed on the base 1. During actual use, the lifting mechanism 11 is one of a hydraulic cylinder, an electric push rod, and a cylinder. The simultaneous operation of multiple lifting mechanisms 11 can push the sealing cover 10 up and down to open the refining furnace 4 for the addition of molten metal; when the sealing cover 10 is closed, in order to prevent the loss of temperature inside the refining furnace 4, a heat insulation plate is installed at the bottom of the sealing cover 10; moreover, a pressure relief valve 19 is also provided on the sealing cover 10, which can exhaust the gas in the sealed refining furnace 4 to prevent the gas in the refining furnace 4 from not being discharged in time and causing damage to the refining furnace 4.

[0030] It should be noted that a rotating pipe 13 is provided in the middle of the sealing cover 10. The rotating pipe 13 penetrates through the sealing cover 10 and the two are rotatably connected. A driving motor 14 is connected to the top of the rotating pipe 13. The driving motor 14 is fixed to the sealing cover 10 through a bracket, and a graphite stirring shaft 15 is connected to the bottom of the rotating pipe 13. A graphite rotor 16 is installed at the bottom of the graphite stirring shaft 15, which can stir the molten metal to cut the bubbles in the molten metal, making them form smaller bubbles, so as to better bring the gas atoms in the molten metal out of the molten metal.

[0031] Furthermore, a sleeve 17 is sleeved on the rotating pipe 13, and the end of the sleeve 17 is rotatably connected to the rotating pipe 13. A through hole for communicating with the sleeve 17 is provided on the rotating pipe 13. A conduit 18 is connected to the side of the sleeve 17. When the heating element 8 is not required to heat the inert gas, the inert gas can be introduced into the conduit 18.

[0032] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A metal melt refining device, characterized in that: It includes a base (1). An installation seat (2) is arranged inside the top of the base (1), and a cavity (3) is formed inside the top of the installation seat (2). A refining furnace (4) is arranged inside the cavity (3). The top of the refining furnace (4) is fixed to the inner wall of the cavity (3), and a porous plug (20) is arranged at the bottom of the refining furnace (4). A plurality of vent pipes (5) arranged at intervals are provided on the outer wall of the refining furnace (4). The bottom of the vent pipe (5) is bent in an "L" shape and connected to each other. An air outlet (9) is further provided at the bottom of the vent pipe (5). The top of the vent pipe (5) is installed on an annular connecting pipe (6), and one side of the connecting pipe (6) is connected to a gas supply pipe (7). The gas supply pipe (7) penetrates through the installation seat (2). The vent pipe (5) is a heat-conducting pipe, and a heating element (8) is arranged on the vent pipe (5). The heating element (8) is spirally wound around the vent pipe (5).

2. The metal melt refining equipment according to claim 1, characterized in that: The top of the refining furnace (4) is fixed to the installation seat (2) through a sealing plate.

3. A metal melt refining device according to claim 1, characterized in that: A sealing cover (10) is provided at the top of the refining furnace (4), and a lifting frame is installed on the sealing cover (10). A rotating pipe (13) is arranged in the middle of the sealing cover (10). The rotating pipe (13) penetrates through the sealing cover (10) and the two are rotatably connected. A driving motor (14) is connected to the top of the rotating pipe (13). The driving motor (14) is fixed to the sealing cover (10) through a bracket. The bottom of the rotating pipe (13) is connected to a graphite stirring shaft (15), and a graphite rotor (16) is installed at the bottom of the graphite stirring shaft (15).

4. A metal melt refining device according to claim 3, characterized in that: The lifting frame includes a plurality of lifting mechanisms (11) arranged at intervals. The lifting mechanisms (11) are obliquely arranged at the edge of the sealing cover (10), and the ends of the lifting mechanisms (11) are rotatably installed in U-shaped seats (12). One of the U-shaped seats (12) is fixed to the sealing cover (10), and the other U-shaped seat (12) is fixed to the base (1).

5. The metal melt refining equipment according to claim 3, characterized in that: A sleeve (17) is sleeved on the rotating pipe (13), and the end of the sleeve (17) is rotatably connected to the rotating pipe (13). A through hole for communicating with the sleeve (17) is formed on the rotating pipe (13), and a conduit (18) is connected to the side of the sleeve (17).

6. A metal melt refining device according to claim 3, characterized in that: A heat-insulating plate is installed at the bottom of the sealing cover (10).

7. A metal melt refining device according to claim 3, characterized in that: A pressure relief valve (19) is further provided on the sealing cover (10).

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