Blowing impurity removal device and smelting equipment
Through the combination of the spiral blower and inert gas, the problem of poor impurity removal effect of sprinkling a refining agent on the surface of the aluminum liquid is solved, and efficient hydrogen removal and impurity removal effects are achieved, improving the quality of the aluminum alloy.
Patent Information
- Application Number
- CN202421420348.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-06-20
AI Technical Summary
In the prior art, the operation of sprinkling a refining agent on the surface of aluminium liquid is difficult to ensure the removal effect, resulting in poor quality of aluminum alloys and difficult to effectively remove hydrogen.
A spiral blower is used to drive the flow of metal liquid through the blower hole on the wall of the blower tube, and combine inert gas to achieve contact between gas and hydrogen and impurities, and drive the refining agent to sink and mix evenly to improve the impurity removal effect.
Effectively remove hydrogen and impurities in aluminum liquid, improve the impurity removal effect and quality of aluminum alloy, and reduce defects such as pore pinholes.
Smart Images
Figure CN223189237U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal material smelting equipment, in particular to an air blowing impurity removal device and smelting equipment. Background Art
[0002] Aluminum alloy casting experiments utilize aluminum ingots, scrap, and master alloys as the primary raw materials. After melting, holding, refining, and casting, solid aluminum alloy test bars are formed. Subsequent testing and analysis of the cast test bars is performed to determine the experimental results. From the solid aluminum ingot or aluminum alloy in a melting furnace to the final casting of the solid specimen, impurities are present not only in the raw materials but also in the smelting process, such as oxides. Furthermore, due to the inherent properties of aluminum alloys, during the smelting process, high-temperature water vapor on the surface of the molten aluminum (abbreviated as "molten aluminum") reacts with the molten aluminum to produce hydrogen atoms. Due to their simple structure and small radius, hydrogen atoms in the molten aluminum easily dissolve into the molten aluminum during the smelting process. These hydrogen atoms combine to form hydrogen gas, making aluminum alloys susceptible to gas absorption during the smelting process. If the gas in the molten alloy is not removed, the resulting castings will develop defects such as pinholes and pores due to hydrogen precipitation. Therefore, aluminum alloys require deslagging and degassing during the smelting process to ensure the quality of the molten alloy.
[0003] Currently, impurity removal in experimental furnaces is typically achieved by sprinkling a refining agent on the surface of the molten aluminum. This refining agent reacts with impurities such as hydrogen and oxides in the molten aluminum, thereby removing gases and slag. This surface-sprinkling method provides limited coverage of the aluminum ladle, resulting in incomplete reaction and poor impurity removal efficiency. This leads to poor quality of the resulting aluminum alloy cast from the molten aluminum, and unsatisfactory results in subsequent experimental testing.
[0004] Therefore, the operation of spraying refining agents on the surface of molten aluminum to remove impurities in the prior art is difficult to ensure the impurity removal effect. Utility Model Content
[0005] In view of the above problems, the present invention aims to provide an air blowing impurity removal device and smelting equipment, which can solve the problem in the prior art that the operation of sprinkling refining agents on the surface of molten aluminum to remove impurities is difficult to ensure the impurity removal effect.
[0006] In a first aspect, the utility model provides an air blowing impurity removal device, comprising:
[0007] an air intake pipe, the air intake end of which can be connected to an external air supply device; and
[0008] The blowing pipe is connected to the air outlet end of the air inlet pipe, and the blowing pipe is spiral-shaped. A plurality of blowing holes are provided on the wall of the blowing pipe to drive the metal liquid to flow by blowing.
[0009] In a possible implementation, the air blowing pipe is arranged to rise in a spiral.
[0010] In a possible implementation, the spiral radius of the blowing pipe is arranged from large to small from bottom to top.
[0011] In a possible implementation, the blowing holes on the circumferential wall of the blowing pipe are arranged obliquely along the spiral direction of the blowing pipe, so that the blowing drives the molten metal to flow in a spiral.
[0012] In a possible implementation, the blowing hole is provided in the upper half of the circumferential wall of the blowing pipe.
[0013] In one possible implementation, a supporting mechanism is further included, which includes a supporting member and a mounting member. The supporting member can be mounted on the smelting furnace mouth, and the mounting member is arranged on the supporting member. The mounting member is used to fix the air inlet pipe so that the air blowing pipe extends into the smelting furnace.
[0014] In one possible implementation, the mounting member is provided with a mounting hole and a clearance groove, the air intake pipe can be rotatably arranged in the mounting hole, and a plurality of positioning protrusions are arranged at intervals in the length direction of the air intake pipe. The positioning protrusions can be abutted against the upper end of the mounting member to form a support and fixation, and when the air intake pipe is rotated, the positioning protrusions can be aligned with the clearance groove, and the mounting member can be passed through the clearance groove to adjust the length of the air intake pipe extending into the smelting furnace.
[0015] In a possible implementation, a limiting structure is provided on the mounting member, and the limiting structure is used to limit the position of the positioning protrusion against the mounting member.
[0016] In one possible implementation, the air inlet pipe and the air blowing pipe are detachably connected.
[0017] In a second aspect, the present invention further provides a smelting device, comprising:
[0018] smelting furnaces; and
[0019] At least one air blowing and impurity removal device as described in any one of the above items is used to perform air blowing and impurity removal inside the smelting furnace.
[0020] Due to the adoption of the above technical solution, the utility model has at least the following beneficial effects:
[0021] The air blowing impurity removal device provided by the utility model is provided with a spiral air blowing pipe and a plurality of air blowing holes on the wall of the air blowing pipe, so that when the air is blown, the gas rolls the molten metal and can drive the molten metal to flow, which can drive the refining agent sprinkled on the surface of the molten metal to stir, sink, mix and contact evenly to remove impurities. When a gas with high stability such as an inert gas is blown in, the blown gas can also be used to contact the hydrogen in the molten metal with impurities, thereby bringing these impurities to the surface of the liquid for subsequent removal, thereby improving the impurity removal effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic structural diagram of an air blowing impurity removal device provided in an embodiment of the present utility model;
[0023] Figure 2 This is a schematic structural diagram of another air blowing pipe that may be implemented in other embodiments of the present invention;
[0024] Figure 3 This is a schematic structural diagram of another air blowing pipe that may be implemented in other embodiments of the present invention;
[0025] Figure 4 This is an embodiment of the utility model Figure 1 Schematic diagram of the enlarged structure of the part A in the middle;
[0026] Figure 5 This is a schematic diagram of another inclined arrangement of the blowing holes provided by an embodiment of the present utility model;
[0027] Figure 6 This is a schematic diagram of the use of the air blowing impurity removal device and the smelting furnace provided in an embodiment of the utility model;
[0028] Figure 7 This is an embodiment of the utility model Figure 6 Schematic diagram of the enlarged structure of the part B in the middle;
[0029] Figure 8 It is a structural schematic diagram of the support mechanism provided by an embodiment of the utility model;
[0030] Figure 9 This is a partial structural diagram of another mounting member provided by an embodiment of the present utility model;
[0031] Figure 10 It is a schematic diagram of the smelting equipment provided by an embodiment of the present utility model.
[0032] In the accompanying drawings, 1. air inlet pipe; 11. air inlet end; 12. positioning protrusion; 2. air blowing pipe; 21. air blowing hole; 3. supporting mechanism; 31. supporting member; 32. mounting member; 321. mounting hole; 322. clearance groove; 323. limiting structure; 10. smelting furnace; 20. air blowing and impurity removal device. DETAILED DESCRIPTION
[0033] The following is a clear and complete description of the technical solution of this utility model patent in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this utility model.
[0034] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0035] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0036] Example 1
[0037] See also Figure 1 This embodiment provides an air blowing and impurity removal device, wherein Figure 1 This is a structural diagram of the air blowing impurity removal device, including:
[0038] An air inlet pipe 1, comprising an air inlet end 11 and an air outlet end, wherein the air inlet end 11 of the air inlet pipe 1 can be connected to an external air supply device; and
[0039] The blowing pipe 2 is connected to the outlet end of the air inlet pipe 1. The blowing pipe 2 is spiral-shaped. A plurality of blowing holes 21 are provided on the wall of the blowing pipe 2 to drive the molten metal to flow by blowing.
[0040] It is understandable that the metal liquid in this embodiment can be selected by those skilled in the art according to the actual metal material to be processed. In this embodiment, the processing of aluminum liquid is used as an example for explanation, but it does not exclude that those skilled in the art will apply the technical solution of the present invention to the smelting and processing of other metal liquids, such as molten iron, copper liquid, etc., and no strict limitation is made here. In addition, in this embodiment, the external gas supply device connected to the air inlet pipe 1 mainly refers to conventional gas supply devices such as gas storage tanks and gas cylinders. In order to make the description in this embodiment clearer, this embodiment is explained by blowing in compressed inert gas as an example. Inert gas mainly refers to helium, argon, etc. In addition, nitrogen or other relatively stable gases can also be blown in. The preferred choice of the blown gas is mainly to use the blown gas to bring hydrogen and oxides in the aluminum liquid to the surface of the aluminum liquid, thereby further ensuring the impurity removal effect.
[0041] In one possible implementation, Figure 1 As shown in FIG, the air blowing pipe 2 is arranged to rise in a spiral.
[0042] It can be understood that since the smelting furnace is a structure with a volume space, in this embodiment, the blowing pipe 2 is spirally arranged to form a three-dimensional spiral, which is equivalent to expanding the blowing space range in the vertical direction, thereby ensuring that the metal liquid can be effectively driven to rotate and stir after blowing.
[0043] In one possible implementation, Figure 1 As shown in FIG, the spiral radius of the blowing pipe 2 is arranged from large to small from bottom to top.
[0044] It can be understood that since the smelting furnace is a structure with a volume space, in this embodiment, the spiral radius of the blowing pipe 2 is set from large to small from bottom to top. The small radius portion can blow the molten metal at the spiral center of the blowing pipe 2, which is equivalent to expanding the spatial range of the blowing in the planar direction, thereby preventing the molten metal at the spiral center from being effectively blown and removed.
[0045] In addition, in other embodiments, the blowing tube 2 can be set to a shape with a uniform spiral radius, such as Figure 2 As shown in Figure 2 This is another structure of the blowing tube that may be implemented in other embodiments of the present invention. The blowing tube 2 set in this shape can also blow air into the molten metal to achieve stirring, thereby improving the impurity removal effect. More specific details will not be further described here.
[0046] In addition, in other embodiments, the spiral radius of the blowing pipe 2 can be set from small to large from bottom to top, and the effect that can be achieved is similar to that of setting the spiral radius of the blowing pipe 2 from large to small from bottom to top. No further description is given here, and those skilled in the art can understand and implement it based on the above description.
[0047] In addition, in other embodiments, the blowing tube 2 can also be made into a plane spiral shape, such as Figure 3 As shown in Figure 3 This is another possible configuration of the blowpipe in other embodiments of the present invention. In this configuration, the blowpipe 2 is configured as a flat spiral, with blowing concentrated at a horizontal position. This can concentrate the blowing action and enhance the blowing effect. Whether the blowpipe 2 is a three-dimensional spiral or a flat spiral can be selected by those skilled in the art based on practical needs, and further description is omitted here.
[0048] In one possible implementation, Figure 4 As shown in Figure 4 yes Figure 1 Schematic diagram of the enlarged structure of local A, combined with Figure 1 It is understood that the blowing holes 21 on the circumferential wall of the blowing pipe 2 are arranged obliquely along the spiral direction of the blowing pipe 2, so that the blowing drives the metal liquid to flow in a spiral. Figure 4 As shown, in this embodiment, when the blowing pipe 2 is a three-dimensional spiral and the radius is arranged from large to small from bottom to top, the blowing hole 21 is arranged obliquely along the spiral expansion direction of the blowing pipe 2 as an example, wherein Figure 3 As shown, Figure 3 The direction A in the figure is the opposite direction of outward expansion. The outward expansion direction refers to the direction in which the spiral radius along the blowing pipe 2 becomes larger and larger. It can be understood that the spiral radius becomes larger and larger, and the spiral radius has a tendency to expand outward. This direction is the outward expansion direction. The blowing hole along the outward expansion direction specifically refers to the hole axis of the blowing hole facing the outward expansion direction. The details can be adjusted according to actual conditions.
[0049] It can be understood that if the blowing hole 21 is not arranged at an angle, for example, vertically toward the center of the spiral, it can only play the role of rolling the molten metal by the gas during blowing, but cannot achieve the effect of spiral stirring. In this embodiment, the blowing hole 21 is further arranged at an angle along the spiral direction of the blowing pipe 2, so that the blown gas can form an airflow along the spiral direction, thereby promoting the flow of the molten metal. The blowing hole 21 is arranged along the spiral outward expansion direction of the blowing pipe 2, so that the formed airflow can be directed in the outward expansion direction, especially toward the molten metal near the inner wall of the smelting furnace, thereby driving the molten metal near the inner wall to spirally flow while using the gas to roll the molten metal. At the same time, it can also drive the molten metal in the center of the spiral to flow from the inside to the outside relative to the center of the spiral, thereby further ensuring the effect of spiral tumbling and stirring.
[0050] It is understandable that the manner in which the blowing holes are arranged obliquely along the spiral direction of the blowing pipe is similar to the blowing pipes in other aforementioned situations, such as Figure 2In the case where the blowing tube is a three-dimensional spiral with a uniform spiral radius, the tilt setting of the blowing hole does not need to consider whether it is along the spiral expansion direction or the contraction direction. The focus is on the tilt setting to form the spiral blowing effect, which will not be further described here.
[0051] In one possible implementation, Figure 4 As shown, the blowing hole 21 is arranged in the upper half of the circumferential wall of the blowing pipe 2, wherein the upper half of the circumferential wall of the blowing pipe 2 mainly refers to the part above the axis line of the blowing pipe along the length direction when the blowing pipe is placed horizontally, and the specific part can be fine-tuned according to actual needs.
[0052] It is understandable that when blowing air downward, the metal liquid itself has a large density and a large resistance. After blowing air downward, the gas will first be slowed down by the resistance of the metal liquid or even lose its speed and float directly upward, and the spiral stirring effect will be weakened. Therefore, the blowing hole 21 is set in the upper half of the blowing pipe 2, and the gas is blown out with a tendency from bottom to top, which can achieve a better spiral and tumbling effect than the downward exhaust method.
[0053] Of course, in other embodiments, if the blowing pressure and speed can be guaranteed, the location of the blowing hole 21 can be ignored. The blowing hole 21 can be directly set in the lower half of the blowing pipe 2. This configuration can ensure that the molten metal at the bottom of the smelting furnace can flow sufficiently. Those skilled in the art can configure these two configurations according to actual needs, and further description is not provided here.
[0054] In addition, in other embodiments, the blowing hole 21 can also be arranged along the spiral contraction direction of the blowing tube 2. The contraction direction is as follows: Figure 3 In the B direction, the contraction direction mainly refers to the spiral direction opposite to the expansion direction. This setting method can also form a spiral airflow, such as Figure 5 The figure shows another schematic diagram of an inclined setting of the blowing hole 21. The blowing hole 21 can be inclined along the spiral contraction direction of the blowing pipe 2, so that the formed air flow is directed in the contraction direction, especially toward the molten metal in the center of the spiral, driving the flow of the molten metal near the center, which can further ensure the effect of spiral stirring.
[0055] In addition, if Figure 4 As shown in FIG, a blowing hole 21 is further provided on the end wall of the blowing pipe 2. The blowing hole 21 is arranged along the spiral direction, and can further perform blowing to ensure the spiral blowing effect.
[0056] It is understandable that the inclination direction of the blowing hole 21 in the present invention can be selected and set by those skilled in the art according to actual needs, and the key point is to be able to form sufficient spiral stirring.
[0057] In one possible implementation, Figure 6 As shown, Figure 6 The air blowing impurity removal device and the smelting furnace in this embodiment are used in a schematic diagram. The air blowing impurity removal device in this utility model also includes a supporting mechanism 3. Figure 7 As shown, the support mechanism 3 includes a support member 31 and a mounting member 32. The support member 31 can be mounted on the mouth of the smelting furnace 10. The mounting member 32 is arranged on the support member 31. The mounting member 32 is used to fix the air inlet pipe 1 so that the air blowing pipe 2 extends into the smelting furnace 10.
[0058] It is understandable that in order to ensure the cleaning effect, the blowing cleaning process generally takes half an hour or even longer. If it is not fixed, the blowing pipe 2 is likely to stick to the bottom and tilt, making it difficult to ensure the blowing effect. If it is manually held, the holding time is long, which is not user-friendly. Therefore, the utility model provides a support mechanism 3 to support and fix the air inlet pipe 1 and the blowing pipe 2 to facilitate the blowing process.
[0059] Specifically, such as Figure 6 and Figure 7 As shown, in this embodiment, the support member 31 is composed of three support rods, and a bending portion is provided at the outer end of the support rod, and the mounting member 32 is provided at the intersection of the support rods. When in use, the support device is mounted on the smelting furnace 10 through the three support rods. The bending portion can contact the outer wall of the smelting furnace to prevent deviation and falling, thereby ensuring the stability of the mounting effect, and then the air intake pipe 1 is placed on the mounting member 32 for fixation.
[0060] In addition, in this embodiment, the support member 31 is composed of three support rods as an example. In other embodiments, the support member 31 can also be simply deformed, including the number of support rods of the support member 31 and the simple deformation of the structure of the support member 31 itself. For example, a separate support frame can be used to be set next to the smelting furnace 10 or at the mouth of the smelting furnace 10. The support member 31 can also be suspended by the support frame so as not to directly abut against the smelting furnace 10. Other conventional settings are not listed here one by one.
[0061] In one possible implementation, Figure 7 and Figure 8 As shown, Figure 7 for Figure 6 Schematic diagram of the enlarged structure of part B in the middle. Figure 8This is a structural diagram of the supporting mechanism. The mounting member 32 is provided with a mounting hole 321 and a clearance groove 322. The air intake pipe 1 can be rotatably set in the mounting hole 321. A number of positioning protrusions 12 are arranged at intervals in the length direction of the air intake pipe 1. The positioning protrusions 12 can be abutted against the upper end of the mounting member 32 to form a support and fixation. When the air intake pipe 1 is rotated, the positioning protrusion 12 can be aligned with the clearance groove 322, and the mounting member 32 can be passed through the clearance groove 322. The positioning protrusions 12 in different positions can be used to adjust the length of the air intake pipe 1 extending into the smelting furnace 10.
[0062] It is understandable that when blowing, in order to further ensure uniform stirring and blowing, it is necessary to move up and down regularly to change the blowing position. In this embodiment, by arranging multiple positioning protrusions 12 at intervals in the length direction of the air inlet pipe 1, the depth of the air inlet pipe 1 and the air blowing pipe 2 extending into the smelting furnace 10 can be adjusted by adjusting the contact between different positioning protrusions 12 and the mounting part 32, thereby realizing the change of the blowing position, and the use of the air blowing and impurity removal device is more flexible and efficient.
[0063] In one possible implementation, Figure 7 、 Figure 8 As shown in , a limiting structure 323 is provided on the mounting member 32, and the limiting structure 323 is used to limit the position of the positioning protrusion 12 against the mounting member 32. Specifically, in this embodiment, the limiting structure 323 is provided at the notch of the clearance groove 322, and is mainly used to limit the positioning protrusion 12 from sliding toward the clearance groove 322, so as to prevent the positioning protrusion 12 from sliding out during use, causing the air intake pipe 1 to slide off the support mechanism 3; at the same time, it can also limit the air intake pipe 1 and the air blowing pipe 2 from being driven by the airflow to rotate when blowing. Further, as Figure 7 In order to facilitate the adjustment of the position of the air intake pipe 1, guides are provided on both sides of the inlet of the limiting structure 323. The guides can be rounded or chamfered to facilitate quick alignment and adjustment.
[0064] like Figure 7 As shown in , the side of the recess 322 on the mounting member 32 is straight and exposed, and the recess 322 can be seen directly from the side, which is convenient for direct adjustment. In other embodiments of the present invention, it can also be set to be closed, such as Figure 9 As shown in FIG, it is a partial structural diagram of another mounting member 32, which is similar to Figure 7 、 Figure 8 The difference between the two schematic diagrams is that the side of the recess 322 is not exposed, making this type of mounting member 32 more stable and less prone to deformation. Those skilled in the art can choose between these two mounting member 32 structures based on actual needs. Other types of mounting members 32 are not excluded. Simple modifications made by those skilled in the art based on the above description should fall within the scope of protection claimed by this utility model.
[0065] In one possible implementation, the intake pipe 1 and the blow pipe 2 are detachably connected. Specifically, to facilitate disassembly and maintenance, and to prevent the molten metal from overly adhering the intake pipe 1 and the blow pipe 2, the connection between the intake pipe 1 and the blow pipe 2 is preferably a transition fit. Inserting the blow pipe 2 into the intake pipe 1 or vice versa allows the blow pipe 2 to be easily knocked off the end of the intake pipe 1. Alternatively, a threaded connection or other conventional methods may be used. In other embodiments, a direct welding fixation may be used, which will not be described further here.
[0066] When the air blowing and impurity removal device provided by the present invention is in use, the air inlet pipe 1 is passed through the support member 31, and then the support member 31 of the support mechanism 3 is erected to rest against the furnace mouth of the smelting furnace 10, so that the air blowing pipe 2 extends into the interior of the smelting furnace 10, and the air inlet end 11 of the air inlet pipe 1 is connected with the air supply device, and air blowing and impurity removal can be started; when the depth position of the air blowing pipe 2 needs to be adjusted during the process, for example, if it needs to go deeper into the smelting furnace 10, the upper end of the air inlet pipe 1 can be held, slightly lifted and then rotated so that the positioning protrusion 12 crosses the limiting structure 323 and passes through the giving groove 322, and the position of the air inlet pipe 1 relative to the mounting member 32 is adjusted downwardly. After reaching the required depth, the air inlet pipe 1 is rotated so that the nearest positioning protrusion 12 rests against the end of the mounting member 32, and the rotation of the air inlet pipe 1 is limited by the action between the limiting structure 323 and the positioning protrusion 12 to prevent it from falling.
[0067] Due to the adoption of the above technical solution, the utility model has at least the following beneficial effects:
[0068] The air blowing impurity removal device provided by the utility model is provided with a spiral air blowing pipe 2, and a plurality of air blowing holes 21 arranged obliquely along the spiral direction of the air blowing pipe 2 are provided on the wall of the air blowing pipe 2, so that when blowing is performed, the gas rolls the molten metal and can form a spiral airflow to drive the molten metal to flow, which can drive the refining agent sprinkled on the surface of the molten metal to stir, sink, and mix evenly to remove impurities. At the same time, when a gas with higher stability such as an inert gas is selected to be blown in, the blown gas can also be used to contact the hydrogen in the molten metal with impurities, thereby bringing these impurities to the surface of the liquid for subsequent removal, thereby improving the impurity removal effect.
[0069] Example 2
[0070] In this embodiment, if Figure 10 This is a schematic diagram of the smelting equipment provided in this embodiment. The utility model also provides a smelting equipment, which includes:
[0071] a smelting furnace 10; and
[0072] At least one air blowing and impurity removal device 20 according to any one of the above items is used to perform air blowing and impurity removal inside the smelting furnace 10 .
[0073] It is understandable that the smelting furnace 10 can be a common smelting furnace in the prior art, which will not be described in detail here. As for the air blowing and impurity removal device 20, it can be understood and implemented in combination with the description in the aforementioned embodiment, and will not be further repeated here.
[0074] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.
Claims
1. An air blowing impurity removal device, characterized in that: include: An air intake pipe, the air intake end of which can be connected to an external air supply device; as well as An air blowing pipe connected to the air outlet end of the air inlet pipe, the air blowing pipe is spiral-shaped, and a plurality of air blowing holes are provided on the wall of the air blowing pipe to drive the molten metal to flow by blowing; It also includes a supporting mechanism, which includes a supporting member and a mounting member. The supporting member can be mounted on the smelting furnace mouth, and the mounting member is arranged on the supporting member. The mounting member is used to fix the air inlet pipe so that the air blowing pipe extends into the smelting furnace.
2. The air blowing impurity removal device according to claim 1, characterized in that: The air blowing pipe is arranged to rise in a spiral.
3. The air blowing impurity removal device according to claim 2, characterized in that: The spiral radius of the air blowing pipe is arranged from large to small from bottom to top.
4. The air blowing impurity removal device according to claim 1, characterized in that: The blowing holes on the circumferential wall of the blowing pipe are arranged obliquely along the spiral direction of the blowing pipe, so that the blowing drives the molten metal to flow in a spiral direction.
5. The air blowing impurity removal device according to claim 1, characterized in that: The blowing holes are arranged on the upper half of the circumferential wall of the blowing pipe.
6. The air blowing impurity removal device according to claim 1, characterized in that: The mounting member is provided with a mounting hole and a clearance groove, the air intake pipe can be rotatably mounted in the mounting hole, a plurality of positioning protrusions are spaced apart in the length direction of the air intake pipe, the positioning protrusions can be abutted against the upper end of the mounting member to form a support and fixation, and when the air intake pipe is rotated, the positioning protrusions can be aligned with the clearance groove, and the mounting member can be passed through the clearance groove to adjust the length of the air intake pipe extending into the smelting furnace.
7. The air blowing impurity removal device according to claim 6, characterized in that: A limiting structure is provided on the mounting member, and the limiting structure is used to limit the position where the positioning protrusion abuts against the mounting member.
8. The air blowing impurity removal device according to claim 1, characterized in that: The air inlet pipe and the air blowing pipe are detachably connected.
9. A smelting equipment, characterized in that: include: smelting furnace; as well as At least one air blowing impurity removal device according to any one of claims 1 to 8, used for air blowing impurity removal in the smelting furnace.