Molten metal purification device

Abstract

The utility model relates to the technical field of metal smelting, in particular to a molten metal purification device which comprises a receiving barrel, a special-shaped barrel and a gas supply assembly. Inert gas is guided into the special-shaped barrel through the gas supply assembly, molten metal in the receiving barrel flows into the middle cavity under the action of gravity, sequentially flows into the upper flow channel through a gap in the bottom of the middle cavity, then enters the lower flow channel through a gap in the top of the upper flow channel, finally flows to the bottom of the special-shaped barrel and enters the storage device, and the molten metal forms an S-shaped flowing path in the special-shaped barrel. The thickness of liquid in the lower flow channel is effectively reduced, inert gas and molten metal are fully mixed, the inert gas adsorbs impurities in the molten metal in the flowing process, floats upwards when standing in the storage device and carries the impurities to the liquid level to complete purification, purification work is synchronously completed in the conveying process, and the conveying efficiency is improved. And time waste caused by follow-up purification is avoided, and the continuity and efficiency of molten metal conveying are improved.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting technology, and in particular to a metal liquid purification device. Background Technology

[0002] Continuous casting is a casting method used to produce steel and other metals, allowing molten metal to be poured into solid products of various shapes in a continuous or semi-continuous process. This process offers higher production efficiency, better product quality, and lower production costs compared to traditional ingot casting. To ensure the quality of the cast billet, the molten metal needs to be purified during the process to remove non-metallic inclusions, gases, or other impurities.

[0003] However, most common molten metal purification devices currently operate in the intermediate ladle at the downstream stage, making it impossible to complete purification during the molten metal transportation process. This can easily lead to the separation of the molten metal transportation and purification processes, affecting the continuity of molten metal transportation in the continuous casting process and reducing production efficiency.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] This invention provides a metal liquid purification device, thereby effectively solving the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a metal liquid purification device, comprising: a receiving tank, a shaped tank, and a gas supply component;

[0007] The receiving bucket is positioned above the irregularly shaped bucket and is used to receive the molten metal and guide it into the irregularly shaped bucket.

[0008] The irregularly shaped barrel includes concentric outer and inner walls, and a top wall connecting the tops of the inner and outer walls. The top wall, outer wall, and inner wall form an annular cavity. The irregularly shaped barrel contains an inner barrel, which includes side walls and a bottom wall, forming a barrel-shaped structure with one open end. The side wall is located between the inner and outer walls, creating a central cavity, an upper flow channel, and a lower flow channel between the inner barrel and the irregularly shaped barrel from the inside out. The end of the side wall has gaps with the top wall, and the end of the inner wall has gaps with the bottom wall, allowing the central cavity, upper flow channel, and lower flow channel to communicate sequentially.

[0009] The gas supply component is located on the circumference of the irregularly shaped barrel and communicates with the interior of the irregularly shaped barrel. It is used to introduce inert gas into the irregularly shaped barrel for the purification of molten metal.

[0010] Furthermore, the irregularly shaped barrel also includes a sliding plate and a spring;

[0011] The slide plate has an L-shaped structure, with one end slidingly inserted into the top wall and connected to the side wall, and the other end connected to the top of the spring. The bottom of the spring is located on the top wall.

[0012] Furthermore, the bottom wall is provided with a centrifugal plate, which is rotatably arranged to agitate the molten metal in the central cavity.

[0013] Furthermore, the bottom of the irregularly shaped barrel is provided with a conical structure for guiding the flow of molten metal inside.

[0014] Furthermore, the gas supply assembly includes an air inlet pipe, an annular chamber, and multiple gas delivery structures;

[0015] The air inlet pipe is disposed on the annular chamber and is used to introduce inert gas into the annular chamber;

[0016] The annular chamber is concentrically arranged with the irregularly shaped barrel;

[0017] Multiple gas conveying structures are disposed between the annular chamber and the shaped barrel, with one end connected to the annular chamber and the other end connected to the shaped barrel, for introducing inert gas from the annular chamber into the shaped barrel.

[0018] Furthermore, the gas delivery structure includes a movable disc, a fixed pipe, and a spring plate;

[0019] The movable disc is disposed between the irregularly shaped barrel and the annular chamber, and the interior of the movable disc is hollow;

[0020] The two fixed tubes are respectively disposed on the two end faces of the movable disk. The axes of the two fixed tubes are parallel and intersecting each other. One end of the two fixed tubes is slidably inserted into the movable disk, and the other end is respectively connected to the irregular barrel and the annular cavity.

[0021] The spring clips are disposed on both sides of the movable disk and are used to connect the movable disk and the annular chamber.

[0022] Furthermore, the gas delivery structure is evenly distributed within the inner ring of the annular chamber to uniformly introduce inert gas into the irregularly shaped barrel.

[0023] Furthermore, the gas supply assembly also includes a fixing frame, with one end of each fixing frame disposed on the outer wall of the annular chamber and the other end disposed on the receiving tank, for fixing the annular chamber in place.

[0024] Furthermore, the intake pipe is equipped with a regulating valve to control the flow rate of the inert gas input.

[0025] Furthermore, the gas supply structure is equipped with a gas filter screen inside to filter particulate impurities in the input inert gas.

[0026] The beneficial effects of this utility model are as follows: This utility model introduces inert gas into the irregularly shaped barrel through the gas supply component. The molten metal in the receiving barrel flows downward into the middle cavity under the action of gravity. The molten metal flows into the upper channel from the bottom gap of the middle cavity and flows upward. Then, it flows outward into the lower channel through the top gap of the upper channel and flows downward. The molten metal in the lower channel flows downward to the bottom of the irregularly shaped barrel and enters the storage device. This creates an S-shaped flow path for the molten metal in the irregularly shaped barrel, effectively reducing the thickness of the molten metal in the lower channel. This allows the inert gas introduced by the gas supply component to be fully mixed with the molten metal. The molten metal mixed with inert gas enters the storage device. As the inert gas flows with the molten metal, it adsorbs impurities in the molten metal. When the molten metal in the storage device is stationary, the inert gas floats up and carries impurities to the surface of the liquid, thus completing the purification of the molten metal. This allows the molten metal to be purified simultaneously during transportation, avoiding the wasted time of purification in the downstream storage device, and improving the continuity and efficiency of molten metal transportation. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural diagram of an irregularly shaped barrel;

[0029] Figure 2 This is a cross-sectional view of an irregularly shaped barrel;

[0030] Figure 3 A schematic diagram of a molten metal purification device;

[0031] Figure 4 In order to be in Figure 3 A magnified view of a section at point A in the middle;

[0032] Figure 5 A cross-sectional view of the gas transport structure (in its natural state);

[0033] Figure 6 This is a cross-sectional view of the gas supply structure (in ventilation mode).

[0034] Reference numerals: 1. Receiving tank; 2. Irregularly shaped tank; 21. Outer wall; 22. Inner wall; 23. Top wall; 24. Middle cavity; 25. Upper flow channel; 26. Lower flow channel; 27. Conical structure; 3. Inner tank; 31. Side wall; 32. Bottom wall; 33. Slide plate; 34. Spring; 35. Centrifugal plate; 4. Air supply assembly; 41. Air inlet pipe; 42. Annular chamber; 43. Air delivery structure; 431. Movable disc; 432. Fixed pipe; 433. Spring; 44. Fixing frame; 45. Regulating valve. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0036] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] like Figures 1 to 6 As shown: A metal liquid purification device includes: a receiving tank 1, a shaped tank 2, and a gas supply component 4;

[0039] The receiving tank 1 is positioned above the irregularly shaped tank 2 to receive the molten metal and guide it into the irregularly shaped tank 2;

[0040] The irregularly shaped barrel 2 includes an outer wall 21 and an inner wall 22 arranged concentrically, and a top wall 23 connecting the top of the inner wall 22 and the outer wall 21. The top wall 23, the outer wall 21, and the inner wall 22 form an annular cavity. The interior of the irregularly shaped barrel 2 is provided with an inner barrel 3, which includes a side wall 31 and a bottom wall 32, forming a barrel-shaped structure with one end open. The side wall 31 is provided between the inner wall 22 and the outer wall 21, so that the inner barrel 3 and the irregularly shaped barrel 2 form a middle cavity 24, an upper flow channel 25, and a lower flow channel 26 from the inside to the outside. The end of the side wall 31 is provided with a gap from the top wall 23, the end of the inner wall 22, and the bottom wall 32. The gap allows the middle cavity 24, the upper flow channel 25, and the lower flow channel 26 to be connected in sequence.

[0041] The gas supply component 4 is located in the circumferential direction of the irregularly shaped barrel 2 and communicates with the interior of the irregularly shaped barrel 2. It is used to introduce inert gas into the irregularly shaped barrel 2 for the purification of molten metal.

[0042] refer to Figure 1 , Figure 2 The gas supply component 4 introduces inert gas into the shaped barrel 2. The molten metal in the receiving barrel 1 flows downwards into the central cavity 24 due to gravity. The molten metal flows from the bottom gap of the central cavity 24 into the upper flow channel 25 and upwards, then flows outwards through the top gap of the upper flow channel 25 into the lower flow channel 26 and downwards. The molten metal in the lower flow channel 26 flows downwards to the bottom of the shaped barrel 2 and enters the storage device (not shown). This creates an S-shaped flow path for the molten metal within the shaped barrel 2, effectively reducing the thickness of the molten metal in the lower flow channel 26, thus improving the gas supply... The inert gas introduced by component 4 can be fully mixed with the molten metal. The molten metal mixed with inert gas will enter the transport and storage device. As the inert gas flows with the molten metal, it adsorbs impurities in the molten metal. When the molten metal in the storage device is stationary, the inert gas floats up and carries the impurities to the surface of the liquid, thereby completing the purification of the molten metal. This allows the molten metal to be purified simultaneously during the transport process, avoiding the waste of time in the downstream storage device, and improving the continuity and efficiency of molten metal transport.

[0043] Meanwhile, this structural design ensures that a certain amount of molten metal is always stored in the middle cavity 24. When the molten metal in the receiving tank 1 flows into the middle cavity 24, the existing molten metal in the middle cavity 24 can buffer the newly flowing molten metal, preventing the newly flowing molten metal from directly impacting the inner wall 22 of the irregularly shaped tank 2 or the side wall 31 of the inner tank 3, thereby effectively preventing droplet splashing and ensuring the stability and safety of the device operation.

[0044] As a preferred embodiment of the above embodiment, the irregularly shaped barrel 2 further includes a sliding plate 33 and a spring 34;

[0045] The slide plate 33 has an L-shaped structure. One end slides into the top wall 23 and connects to the side wall 31, while the other end connects to the top of the spring 34. The bottom of the spring 34 is located on the top wall 23. Specifically, the slide plate 33 guides the inner barrel 3, allowing it to move vertically within the irregularly shaped barrel 2. This restricts the size of the gap between the middle cavity 24 and the upper flow channel 25, and the gap between the upper flow channel 25 and the lower flow channel 26, due to the position of the inner barrel 3. The spring 34 provides an upward elastic thrust to the inner barrel 3 via the slide plate 33. In its natural state, the channels between the middle cavity 24 and the upper flow channel 25, and between the upper flow channel 25 and the lower flow channel 26, are closed. When… When molten metal is introduced into the middle cavity 24, it falls onto the inner tank 3. As the amount of molten metal increases, the pressure on the inner tank 3 increases, and the inner tank 3 gradually moves downwards against the elastic force of the spring 34. At this time, the channels between the middle cavity 24 and the upper flow channel 25, and between the upper flow channel 25 and the lower flow channel 26, open, allowing the molten metal to flow smoothly. This structural design ensures that there is always enough molten metal in the middle cavity 24 to carry the molten metal flowing into the middle cavity 24 from the receiving tank 1. In its natural state, it can prevent outside air and dust from entering the equipment. Of course, due to the restriction of the channels between the upper flow channel 25 and the lower flow channel 26 and the action of the spring 34, the surface of the molten metal in the middle cavity 24 will rise to the receiving tank 1.

[0046] The bottom wall 32 is provided with a centrifugal plate 35, which is rotatably arranged to agitate the molten metal in the central cavity 24. Specifically, the centrifugal plate 35 can be driven to rotate by a drive (not shown). When the centrifugal plate 35 rotates, the molten metal near the bottom of the inner barrel 3 is agitated and flows towards the inner wall 22 of the central cavity 24 and moves upward along the inner wall 22. At the same time, the molten metal in the middle of the central cavity 24 flows downward to replenish the vicinity of the centrifugal plate 35, thereby forming a vortex-like flow pattern with the middle downward and the edges upward in the central cavity 24. This flow pattern can not only effectively reduce molten metal splashing, but also smoothly receive the molten metal, improving the stability and conveying efficiency of the molten metal in the central cavity 24.

[0047] In this embodiment, the bottom of the irregularly shaped barrel 2 is provided with a conical structure 27, which is used to guide the flow of the internal molten metal, thereby optimizing the flow path of the molten metal, guiding the molten metal to contract inward and flow into the storage device.

[0048] As a preferred embodiment of the above, refer to Figure 3 The air supply assembly 4 includes an air inlet pipe 41, an annular chamber 42, and multiple air delivery structures 43;

[0049] An intake pipe 41 is disposed on an annular chamber 42 and is used to introduce inert gas into the annular chamber 42;

[0050] The annular chamber 42 is concentrically arranged with the irregularly shaped barrel 2;

[0051] Multiple gas conveying structures 43 are disposed between the annular chamber 42 and the shaped barrel 2, with one end connected to the annular chamber 42 and the other end connected to the shaped barrel 2. They are used to introduce the inert gas in the annular chamber 42 into the shaped barrel 2, which can ensure that the inert gas is introduced into the molten metal inside the shaped barrel 2 in a uniform manner, so that the gas and the molten metal can be in full contact, thereby improving the impurity adsorption effect.

[0052] As a preferred embodiment of the above, refer to Figure 4 The gas transmission structure 43 includes a movable disc 431, a fixed pipe 432, and a spring 433;

[0053] The movable plate 431 is disposed between the irregularly shaped barrel 2 and the annular chamber 42, and the interior of the movable plate 431 is hollow;

[0054] Two fixed tubes 432 are respectively provided on the two end faces of the movable disk 431. The axes of the two fixed tubes 432 are parallel and intersecting each other. One end of the two fixed tubes 432 is slidably inserted into the movable disk 431, and the other end is connected to the irregular barrel 2 and the annular chamber 42 respectively.

[0055] The spring clips 433 are located on both sides of the movable disk 431 and are used to connect the movable disk 431 and the annular chamber 42.

[0056] In this system, the inert gas in the annular chamber 42 can flow into the movable disk 431 through a fixed pipe 432, and the inert gas in the movable disk 431 can flow into the lower flow channel 26 through another fixed pipe 432, thereby realizing the inert gas delivery. Figure 5 As shown, due to the action of the spring 433, in its natural state, the inner wall 22 of the movable disk 431 is in contact with the end face of the fixed tube 432 on the annular chamber 42. At this time, the fixed tube 432 is in a closed state, while the other fixed tube 432 remains in communication with the movable disk 431, thereby isolating the two fixed tubes 432. Figure 6 As shown, when the gas is ventilated, the inert gas pushes the fixed tube 432, which is in a closed state, to slide due to the gas pressure and separates from the movable plate 431. At this time, the inert gas can flow smoothly through the two fixed tubes 432 through the movable plate 431, thereby realizing the gas supply. This structural design can prevent the molten metal from entering the annular chamber 42 and avoid the high temperature molten metal from affecting the spring 433. Its structure is simple and has strong anti-interference ability.

[0057] The gas delivery structure 43 is evenly distributed in the inner ring of the annular chamber 42 to uniformly introduce inert gas into the irregularly shaped barrel 2. In this embodiment, there are six gas delivery structures 43, but other numbers can be set according to site requirements and actual dimensions.

[0058] In this embodiment, the gas supply assembly 4 also includes a fixing frame 44. One end of the fixing frame 44 is disposed on the outer wall of the annular chamber 42, and the other end is disposed on the receiving tank 1. It is used to fix the annular chamber 42 in place, providing stable support from a structural perspective, thereby reducing the stress on the gas supply structure 43.

[0059] The intake pipe 41 is equipped with a regulating valve 45, which is used to control the flow rate of inert gas input. The regulating valve 45 can accurately adjust the input flow rate of inert gas according to actual needs, avoid excessive or insufficient gas input, improve gas utilization efficiency, and reduce gas waste.

[0060] As a preferred embodiment of the above, the gas supply structure 43 is provided with a gas filter screen inside to filter particulate impurities in the input inert gas, ensuring the purity of the gas and improving the purification effect of the molten metal.

[0061] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A molten metal purification apparatus, characterised in that, The application relates to a metal liquid purifying device. The device comprises a receiving bucket, a special-shaped bucket and a gas supply assembly. The receiving bucket is arranged above the special-shaped bucket and is used for receiving metal liquid and guiding the metal liquid into the special-shaped bucket. The special-shaped bucket comprises an outer wall and an inner wall arranged concentrically and a top wall connecting the top of the inner wall and the outer wall, the top wall, the outer wall and the inner wall form a ring-shaped cavity; the inner part of the special-shaped bucket is provided with an inner bucket, the inner bucket comprises a side wall and a bottom wall and forms a bucket-shaped structure with one end being open; the side wall is arranged between the inner wall and the outer wall, so that the inner bucket and the special-shaped bucket form a middle cavity, an upflow channel and a downflow channel from inside to outside, and the end of the side wall is provided with a gap with the top wall, the end of the inner wall and the bottom wall; the gaps make the middle cavity, the upflow channel and the downflow channel communicate in sequence. The gas supply assembly is arranged in the circumferential direction of the special-shaped bucket and communicates with the inner part of the special-shaped bucket and is used for guiding inert gas into the special-shaped bucket to purify the metal liquid.

2. The metal liquid purification device according to claim 1, characterized by The special-shaped bucket further comprises a sliding plate and a spring. The sliding plate is in L-shaped structure, one end of the sliding plate is slidably inserted into the top wall and is connected with the side wall, the other end of the sliding plate is connected with the top of the spring, and the bottom of the spring is arranged on the top wall.

3. The molten metal purification apparatus of claim 1, wherein The bottom wall is provided with a centrifugal plate which is arranged in rotation and stirs the metal liquid in the middle cavity.

4. The molten metal purification apparatus of claim 1, wherein The bottom of the special-shaped bucket is provided with a conical structure which is used for guiding the flow of the metal liquid in the inner part.

5. The molten metal purification apparatus of claim 1, wherein The gas supply assembly comprises an air inlet pipe, a ring-shaped cavity and a plurality of gas conveying structures. The air inlet pipe is arranged on the ring-shaped cavity and is used for guiding inert gas into the ring-shaped cavity. The ring-shaped cavity is arranged concentrically with the special-shaped bucket. The plurality of gas conveying structures are arranged between the ring-shaped cavity and the special-shaped bucket, one end of each of the gas conveying structures is connected with the ring-shaped cavity, and the other end of each of the gas conveying structures is connected with the special-shaped bucket, so as to guide the inert gas in the ring-shaped cavity into the special-shaped bucket.

6. The metal-liquid purifying apparatus according to claim 5, characterized by The gas conveying structure comprises a movable disc, a fixed pipe and a spring sheet. The movable disc is arranged between the special-shaped bucket and the ring-shaped cavity, and the inner part of the movable disc is hollow. Two fixed pipes are arranged on two end faces of the movable disc respectively, the axes of the two fixed pipes are parallel and arranged staggeredly, one end of each of the two fixed pipes is slidably inserted into the movable disc, and the other end of each of the two fixed pipes is connected with the special-shaped bucket and the ring-shaped cavity respectively. The spring sheet is arranged on the two sides of the movable disc and is used for connecting the movable disc with the ring-shaped cavity.

7. The molten metal purification apparatus of claim 5, wherein The gas conveying structures are arranged equally in the inner ring of the ring-shaped cavity and are used for guiding inert gas into the special-shaped bucket uniformly.

8. The molten metal purification apparatus of claim 5, wherein The gas supply assembly further comprises a plurality of fixing frames, one end of each of the fixing frames is arranged on the outer wall of the ring-shaped cavity, and the other end of each of the fixing frames is arranged on the receiving bucket, so as to fix the ring-shaped cavity.

9. The molten metal purification apparatus of claim 5 wherein, The air inlet pipe is provided with an adjusting valve which is used for controlling the flow of the input inert gas.

10. The molten metal purification apparatus of claim 5, wherein The inner part of the gas conveying structure is provided with a gas filter screen which is used for filtering the particulate impurities in the input inert gas.

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