System device for effectively removing floating slag on surface layer of alloy liquid in smelting furnace

Abstract

The utility model discloses a system device for effectively removing floating slag on the surface layer of alloy liquid in a smelting furnace, which comprises a sealing tank body and accessories such as a flow guide pipe, a three-way pipeline and a gas filling pipeline which are fixed on the sealing tank body in a sealing and fixing manner, one end of the flow guide pipe extends into the alloy liquid, a second port is adjacent to the bottom of the smelting furnace, and the other end of the flow guide pipe extends into the smelting furnace. The first port is located in the sealed tank body, the air pressure of the sealed tank body is controllable by controlling the first valve, the second valve and the third valve, and alloy liquid below a scum / alloy liquid interface is transferred into a mold through the flow guide pipe by reducing the air pressure in the sealed tank body, so that the adverse effect of the scum on the alloy performance is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of alloy smelting production equipment, relates to effectively eliminating scum on the surface of alloy liquid during the alloy smelting process, and specifically is a system device for effectively removing scum on the surface of alloy liquid in a smelting furnace. Background Art

[0002] Generally speaking, the first step in preparing alloy materials is alloy smelting. During the smelting process, various scums are very likely to appear on the surface of the alloy liquid in the smelting furnace. On the one hand, the presence of these scums is conducive to and hinders the contact between external oxygen and the alloy liquid, but on the other hand, when the alloy liquid is transferred to the mold for solidification, it is very easy to carry the scum into the mold cavity. After the alloy liquid solidifies, the scum particles will be "fixed" inside the alloy ingot. These small particles have a very adverse effect on the performance of the alloy. In order to eliminate the adverse effects of the scum as much as possible, people have invented many slag removal measures. For example, the utility model patent with the patent authorization number of CN 218884671U and the patent name of a slag removal frame for aluminum alloy refining, in the field of aluminum alloy refining technology, has designed a slag removal frame. Compared with pure manual slag removal, it reduces the labor intensity of workers while also improving labor efficiency.

[0003] Examples from life can be used to illustrate the effect of adding a slag blocking device to remove scum on the surface of the alloy liquid. For example, in life, most oil will float on the water surface. If the oil-water mixture in the cup needs to be transferred to other containers, and the liquid transferred to other containers is required to be completely water. The physical barrier method cannot completely remove the oil layer on the water surface, and a small amount of oil will always be transferred to the new container together with the water. Therefore, in industrial production, the method of adding a slag blocking device can indeed remove most of the scum on the surface of the alloy liquid, but in the process of transferring the alloy liquid, a small amount of scum will still be entrained in it.

[0004] Common sense tells us that when we take water from below the oil / water interface, the oil all floats on the surface of the water, so the water taken out does not contain any oil at all. For example, when the needle is always below the oil / water interface and water is taken with a syringe, there is no doubt that the liquid sucked into the syringe is all water. Inspired by this, if the guide tube is inserted into the alloy liquid, its port is close to the bottom of the smelting furnace, and the other section of the guide tube is located outside the smelting furnace, the lower part of the port of this section is directly opposite to the mold opening. Therefore, once the alloy liquid can be continuously injected from the smelting furnace into the mold through the guide tube, the influence of slag can be completely avoided, and the purity of the alloy liquid in the mold can be ensured. The key problem that needs to be solved is how to design and invent a system device, through which the alloy liquid can be continuously injected into the mold through the guide tube. Utility Model Content

[0005] The utility model aims to provide a system device for effectively removing slag on the surface of alloy liquid in a smelting furnace, which solves the above-mentioned problem.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A system device for effectively removing scum on the surface of alloy liquid in a smelting furnace, comprising a sealed tank body, a quartz glass observation window for convenient observation of the interior of the sealed tank body is arranged on the sealed tank body, the sealed tank body is connected with a guide pipe, a gas supply pipeline and a three-way pipeline, the guide pipe, the gas supply pipeline and the three-way pipeline are all connected with the interior of the sealed tank body; the three-way pipeline comprises a first branch connected to the sealed tank body, a second branch connected to the atmosphere and a third branch for exhausting gas; a first valve is arranged on the gas supply pipeline, and a second valve and a third valve are arranged on the second branch and the third branch respectively; and a smelting furnace for containing alloy liquid is also included, the smelting furnace is connected with the guide pipe.

[0008] Preferably, the sealed tank body comprises a collecting tank and a sealing cover arranged above the collecting tank and connected to the collecting tank, a groove is provided at the opening edge of the collecting tank, and a graphite gasket for sealing is provided in the groove.

[0009] Preferably, the flow guide tube, the quartz glass observation window, the gas supply pipeline and the three-way pipeline are all sealed and connected to the sealing cover.

[0010] Preferably, the guide pipe includes a first port close to the receiving tank and a second port close to the smelting furnace, and the height of the first port is smaller than the height of the second port.

[0011] Preferably, the gas filling pipeline is connected to one of a gas cylinder or an air compressor.

[0012] Preferably, the third branch is connected to a mechanical vacuum pump.

[0013] Preferably, the diameter of the guide tube is 0.3 cm-45 cm, and the material of the guide tube is a material that is resistant to high temperatures and does not react with the alloy liquid.

[0014] The beneficial effects of the utility model are as follows: the utility model comprises a sealed tank body and accessories such as a guide pipe, a three-way pipeline, a gas supply pipeline, etc. fixed thereon in a sealed and fixed manner; one end of the guide pipe is inserted into the alloy liquid, the second port is adjacent to the bottom of the smelting furnace, and the first port is located in the sealed tank body; the air pressure of the sealed tank body is controllable by controlling the first valve, the second valve and the third valve; by reducing the air pressure in the sealed tank body, the alloy liquid below the slag / alloy liquid interface is transferred to the mold through the guide pipe, thereby avoiding the adverse effect of the slag on the alloy performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model;

[0016] Figure 2 yes Figure 1 Schematic diagram of the combined structure;

[0017] Figure 3 It is a structural schematic diagram of the second embodiment of the utility model;

[0018] Figure 4 yes Figure 3 Schematic diagram of the combined structure;

[0019] Among them, there are a sealed tank body 1, a collecting tank 11, a sealing cover 12, a graphite gasket 13, a quartz glass observation window 2, a guide tube 3, a first port 31, a second port 32, a gas supply pipeline 4, a three-way pipeline 5, a first branch 51, a second branch 52, a third branch 53, a first valve 6, a second valve 7, a third valve 8, a smelting furnace 9, slag 91, and alloy liquid 92. DETAILED DESCRIPTION

[0020] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0021] like Figures 1 to 4 As shown, the utility model provides a system device for effectively removing scum on the surface of alloy liquid in a smelting furnace, which includes a sealed tank body 1, and a quartz glass observation window 2 is provided on the sealed tank body 1 for convenient observation of the interior of the sealed tank body 1. The sealed tank body 1 is connected with a guide pipe 3, a gas supply pipeline 4 and a three-way pipeline 5, and the guide pipe 3, the gas supply pipeline 4 and the three-way pipeline 5 are all connected with the interior of the sealed tank body 1. Among them, the three-way pipeline 5 includes a first branch 51 connected to the sealed tank body 1, a second branch 52 connected to the atmosphere, and a third branch 53 for exhausting air. A first valve 6 is provided on the gas supply pipeline 4, and a second valve 7 and a third valve 8 are provided on the second branch 52 and the third branch 53 respectively. A smelting furnace 9 for containing alloy liquid 92 is also included, and the smelting furnace 9 is connected to the guide pipe 3.

[0022] Furthermore, the sealed tank body 1 includes a collecting tank 11 and a sealing cover 12 disposed above and connected to the collecting tank 11. The collecting tank 11 and the sealing cover 12 can be fixed by means of a ferrule or screws, etc., so as to achieve their functions. A groove (not shown) is provided at the opening edge of the collecting tank 11, and a graphite gasket 13 for sealing is provided in the groove. The size of the graphite gasket 13 matches the sealing cover 11 and the collecting tank 12;

[0023] Furthermore, the flow guide tube 3, the quartz glass observation window 2, the gas supply pipeline 4 and the three-way pipeline 5 are all sealed and connected to the sealing cover 12, and the sealing connection method can be welding or threaded connection, whichever can achieve its function.

[0024] Furthermore, the flow guide pipe 3 includes a first port 31 close to the receiving tank 11 and a second port 32 close to the smelting furnace 9 , and the height of the first port 31 is smaller than the height of the second port 32 .

[0025] Furthermore, the gas supply pipeline 4 is connected to an air supply device (not shown) for supplying gas to the sealed tank 1. The air supply device can be a gas cylinder or an air compressor, etc., whichever can achieve its function. The third branch 53 is connected to a mechanical vacuum pump (not shown) for evacuating the sealed tank.

[0026] Furthermore, the diameter of the flow guide tube 3 is 0.3 cm-45 cm, and the material of the flow guide tube 3 is a material that is resistant to high temperatures and does not react with the alloy liquid 92 .

[0027] When the utility model is used, if the mold used can be directly vacuumed, such as Figure 1 As shown, the mold can be used as a collecting tank 11 to directly collect the alloy liquid 92. If the mold used cannot be directly vacuumed, such as Figure 3 As shown, the air pressure of the sealed tank body 1 is adjusted, and the mold 10 is placed in the sealed tank body 1 to collect the alloy liquid 92.

[0028] Specifically, in Example 1: if the mold used can be directly vacuumed, the mold can be used as the collecting tank 11. Figure 1 As shown, the use process of the utility model is as follows: first, the graphite gasket 6 is placed in the groove of the collection tank (mold) 11, and then the sealing cover 12 (including all accessories such as the guide tube 3 fixed on the sealing cover 12) is placed on the collection tank (mold) 11, and the collection tank (mold) and the sealing cover 12 are fixed. Figure 2 shown.

[0029] Open the first valve 6 on the gas filling pipeline 4 to fill the collecting tank (mold) 11. Since the guide tube 3 is always connected to the outside, the filled gas will be discharged from the second port 32 through the guide tube 3. When it is felt that there is continuous gas outflow from the second port 32, immerse the second port 32 of the guide tube 3 into the alloy liquid 92 until it is close to the bottom of the smelting furnace 9, and close the first valve 6 on the gas filling pipeline 4 to stop gas filling.

[0030] After the mechanical vacuum pump is turned on, the third valve 8 on the third branch 5 of the three-way pipe 5 is slowly opened. As the mechanical vacuum pump works, the air pressure in the collecting tank (mold) 11 continues to decrease. Under the influence of the atmospheric pressure, the alloy liquid 92 gradually enters the guide tube 3, flows out from the first port 31 of the guide tube 3, and is injected into the collecting tank (mold) 11. When the alloy liquid 92 is seen to be injected into the collecting tank (mold) 11 from the quartz glass observation window 2, the third valve 8 of the third branch 53 is turned off, the mechanical vacuum pump is turned off, and the second valve 7 of the second branch 52 is opened to connect to the atmosphere. Under the premise that the volume of the collecting tank (mold) 11 is greater than the volume of the alloy liquid 92 in the smelting furnace 9, the changes in the liquid levels of the slag 91 and the alloy liquid 92 in the smelting furnace 9 are observed. When the slag 91 is close to the bottom of the smelting furnace 9, the second valve 7 of the second branch 52 is closed. Move the second port 32 of the flow guide tube 3 to a position higher than the scum 91 (but still in the smelting furnace 9), open the first valve 6 of the gas supply line 4, and the gas flowing into the collecting tank (mold) 11 will flow out from the second port 32 of the flow guide tube 3, and the droplets of the alloy liquid 92 remaining on the inner wall of the flow guide tube 3 will be removed by means of the gas flow. When it is found that no more droplets fly out of the second port 32 of the flow guide tube 3, close the first valve 6 of the gas supply line 4, and move the flow guide tube 3 outside the smelting furnace 9. If the production is continued, feed more materials into the smelting furnace 9 for smelting. After the alloy liquid 92 is evenly smelted, replace the collecting tank (mold) 11, and repeat the above process. If smelting is no longer needed, just remove the scum 91 and residual materials in the smelting furnace 9. The residual materials can be stored separately so that when the same alloy is produced next time, the residual materials can be added to the smelting furnace 9 and melted together with the new materials.

[0031] Since the alloy liquid 92 in the collecting tank (mold) 11 is collected from below the slag 91 / alloy liquid 92 interface of the smelting furnace 9, it is ensured that there is no slag 91 in the collected alloy liquid 92, thus solving the problem of a small amount of slag 91 being mixed in the alloy.

[0032] Specifically, in Example 2, if the mold 10 used cannot be directly vacuumed, the mold 10 is placed in a sealed tank 1 to collect the alloy liquid 92. This is the case with a flap mold, which cannot be directly vacuumed. Figure 3 As shown, the use process of the utility model is as follows: first, place the graphite gasket 6 in the groove above the collection tank 11, and place the mold 10 in the collection tank 11. Pay attention to adjusting the placement position of the mold 10. When the sealing cover 12 is covered on the collection tank 11, the opening of the mold 10 should face the first port 31 of the guide tube 3 to ensure that the alloy liquid 92 can be accurately injected into the mold 10. After placing the mold 10, cover the sealing cover 12 on the collection tank 11, and use screws or other methods to fix the two. The assembly is completed as shown in FIG. Figure 4 shown.

[0033] Open the first valve 6 of the gas-filling pipeline 4 to inflate the sealed tank 1. Since the flow guide tube 3 is always connected to the outside, the inflated gas will be released from the second port 32 through the flow guide tube 3. When the second port 32 is felt to continuously flow out gas, immerse the second port 32 into the alloy liquid 92 near the bottom of the smelting furnace 9, close the first valve 6 on the gas-filling pipeline 4, and stop inflating. After turning on the mechanical vacuum pump, slowly open the third valve 8 of the third branch 53 of the three-way pipeline 5. As the mechanical vacuum pump works, the air pressure in the sealed tank 1 continues to decrease. Affected by the atmospheric pressure, the alloy liquid 92 gradually enters the flow guide tube 3 and flows out from the first port 31 of the flow guide tube 3 and is injected into the mold 10 below. When the alloy liquid 92 is seen to be injected into the mold 10 from the quartz glass observation window 2, turn off the third valve 8 of the third branch 53, turn off the mechanical vacuum pump, and open the second valve 7 of the second branch 52 to connect to the atmosphere.

[0034] If the capacity of the mold 10 is smaller than the volume of the alloy liquid 92 in the smelting furnace 9, the change of the liquid level of the alloy liquid 92 in the mold 10 is continuously monitored through the quartz glass observation window 2. When the liquid level of the alloy liquid 92 in the mold 10 is higher, the second port 32 of the guide tube 3 is moved to a position higher than the slag 91 in the smelting furnace 9, the second valve 7 of the second branch 62 is closed, and the first valve 6 of the gas supply line 4 is opened. The gas injected into the sealed tank body 1 will flow out from the guide tube 3, and the residual alloy liquid 92 droplets on the inner wall of the guide tube 3 are cleared by the air flow. When no more droplets fly out from the second port 32 of the guide tube 3, the first valve 6 of the gas supply line 4 is closed, and the sealed tank body 1 is opened. After replacing the mold 10, the next round of collecting the alloy liquid 92 is performed.

[0035] If the capacity of the mold 10 is greater than the volume of the alloy liquid 92 in the smelting furnace 9, the changes in the liquid levels of the slag 91 and the alloy liquid 92 in the smelting furnace 9 are observed. When the slag 91 is close to the bottom of the smelting furnace 9, the second valve 7 of the second branch 52 is closed, and the second port 32 of the guide tube 3 is moved to a position higher than the slag 91 (but still located in the smelting furnace 9). The first valve 6 of the gas supply line 4 is opened, and the gas flowing into the mold 10 will pass through the second port 32 of the guide tube 3. With the help of the gas flow, the alloy liquid 92 droplets remaining on the inner wall of the guide tube 3 are cleared. When it is found that no more droplets fly out from the second port 32 of the guide tube 3, the first valve 6 of the gas supply line 4 is closed, and the guide tube 3 is moved outside the smelting furnace 9.

[0036] If the production is continued, feed more materials into the smelting furnace 9 for smelting. After the alloy liquid 92 is evenly smelted, replace the mold 10 and repeat the above process. If smelting is no longer needed, it is only necessary to remove the slag 91 and residual materials in the smelting furnace 9. The residual materials can be stored separately so that when the same alloy is produced next time, the residual materials can be added to the smelting furnace 9 and melted together with the new materials.

[0037] Since the alloy liquid 92 in the mold 10 is collected from below the slag 91 / alloy liquid 92 interface of the smelting furnace 9, it is ensured that there is no slag 91 in the collected alloy liquid 92, thereby solving the problem of a small amount of slag 91 being mixed in the alloy.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A system device for effectively removing scum on the surface of alloy liquid in a smelting furnace, characterized in that: The invention comprises a sealed tank body, on which a quartz glass observation window for conveniently observing the inside of the sealed tank body is arranged, the sealed tank body is connected with a flow guide pipe, a gas supply pipeline and a three-way pipeline, the flow guide pipe, the gas supply pipeline and the three-way pipeline are all connected with the inside of the sealed tank body; the three-way pipeline comprises a first branch connected with the sealed tank body, a second branch connected with the atmosphere and a third branch for exhausting gas; a first valve is arranged on the gas supply pipeline, and a second valve and a third valve are arranged on the second branch and the third branch respectively; and a smelting furnace for containing alloy liquid is also included, and the smelting furnace is connected with the flow guide pipe.

2. The system device for effectively removing scum on the surface of molten alloy in a smelting furnace according to claim 1, characterized in that: The sealed tank body comprises a collecting tank and a sealing cover arranged above the collecting tank and connected to the collecting tank. A groove is provided at the opening edge of the collecting tank, and a graphite gasket for sealing is arranged in the groove.

3. The system device for effectively removing scum on the surface of alloy liquid in a smelting furnace according to claim 2, characterized in that: The flow guide tube, the quartz glass observation window, the gas supply pipeline and the three-way pipeline are all sealed and connected to the sealing cover.

4. The system device for effectively removing scum on the surface of molten alloy in a smelting furnace according to claim 2, characterized in that: The guide pipe includes a first port close to the receiving tank and a second port close to the smelting furnace, and the height of the first port is smaller than the height of the second port.

5. The system device for effectively removing scum on the surface of alloy liquid in a smelting furnace according to claim 1, characterized in that: The gas filling pipeline is connected to one of a gas cylinder or an air compressor.

6. The system device for effectively removing scum on the surface of molten alloy in a smelting furnace according to claim 1, characterized in that: The third branch is connected to a mechanical vacuum pump.

7. The system device for effectively removing scum on the surface of alloy liquid in a smelting furnace according to claim 1, characterized in that: The diameter of the guide tube is 0.3 cm-45 cm, and the material of the guide tube is a material that is resistant to high temperatures and does not react with the alloy liquid.

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