Fluid purification device and method

Abstract

The present invention relates to the field of fluid purification, and specifically to a fluid purification device and method. The device includes a flow channel well, with a liquid inlet and a liquid outlet connected to the side wall of the flow channel well. A vertical partition is fixedly provided inside the flow channel well, and the partition divides the inside of the flow channel well into a vortex area and a stable area that are interconnected. The flow channel well is provided with a slag port connected to the stable area; the liquid inlet is connected to the side wall of the vortex area, and the liquid inlet direction of the liquid inlet points to the inner wall of the vortex area. The method purifies the fluid based on the device. This solution improves the efficiency and quality of fluid purification. Fluid purification does not require feeding purification in the furnace, and purification is achieved by feeding outside the furnace, which changes the traditional method of feeding purification in the furnace in the industry, thereby improving the overall efficiency of liquid treatment.

Description

Technical Field

[0001] The present invention relates to the field of fluid purification, and in particular to a fluid purification device and method. Background Art

[0002] In the prior art, aluminum alloys require a refining step after smelting in a smelting furnace. Refining is achieved by adding a refining agent or gas to the molten aluminum alloy, which reacts with the liquid to refine the alloy. The traditional method of adding the refining agent (or gas) involves adding the refining agent or gas to the smelting furnace after smelting, mixing the refining agent (or gas) with the liquid, and then draining the molten aluminum alloy into a holding furnace. With this method, the refining agent (or gas) gradually reacts with the aluminum alloy upon contact, forming slag. Therefore, deslagging operations are required in both the smelting and holding furnaces to purify the liquid.

[0003] In order to make the aluminum alloy liquid and refining agent (or gas) in the melting furnace fully contact and react, after adding the refining agent or gas to the melting furnace, mechanical stirring is carried out. Mechanical equipment is used to stir the aluminum alloy melt and the refining agent (or gas) to make them contact and mix fully as much as possible.

[0004] The above purification method has the following disadvantages: 1. The slag is dispersed on the liquid surface due to the large volume of the smelting furnace or holding furnace. However, the slag removal tools are much smaller than the smelting furnace, making it difficult to salvage the slag. Furthermore, slag in the corners of the furnace cannot be salvaged completely, thus affecting the quality and efficiency of slag removal. Furthermore, when adding refining agents or gases to the smelting furnace, the mechanical stirring range is limited, resulting in dead corners. This leads to uneven distribution of the added refining agent or gas, resulting in insufficient reaction with the liquid, thus affecting the quality and efficiency of liquid purification.

[0005] 2. In order to make the mechanical stirring equipment have a larger stirring range as much as possible, the furnace door of the smelting furnace is opened to a larger extent or the opening of the smelting furnace door is set larger, so that the mechanical stirring equipment can move horizontally or vertically, thereby increasing the stirring range. However, since the furnace door is set larger or opened to a larger extent, there will be greater heat loss and energy waste.

[0006] 3. Currently, the industry can only wait until the materials are added to the smelting furnace and the aluminum alloy melt in the smelting furnace is fully mixed with the refining agent (or gas) before transferring the aluminum alloy melt to the holding furnace. This process takes a long time and the efficiency of processing and production needs to be improved.

[0007] In summary, the current purification of aluminum alloy melts has problems such as uneven and insufficient mixing of refining agents and / or gases with the liquid in the melting furnace, heat loss and energy waste, long purification time and low efficiency. Summary of the Invention

[0008] The present invention aims to provide a fluid purification device and method to improve the efficiency and quality of fluid purification.

[0009] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a fluid purification device, comprising a flow channel well, a liquid inlet channel and a liquid outlet channel connected to the side wall of the flow channel well, a vertical partition is fixedly provided inside the flow channel well, the partition divides the inside of the flow channel well into a vortex zone and a smooth zone that are interconnected, and a slag port connected to the smooth zone is provided on the flow channel well; the liquid inlet channel is connected to the side wall of the vortex zone, and the liquid inlet direction of the liquid inlet channel points to the inner wall of the vortex zone.

[0010] The principles and advantages of this solution are as follows: in this solution, the fluid enters the flow channel well from the liquid inlet channel, and the fluid flows out of the flow channel well through the liquid outlet channel. Initially, the liquid level in the flow channel well gradually rises after the fluid enters the flow channel well. When the liquid level reaches a certain height, the liquid level is located between the top and bottom of the partition. Then, by controlling the speed at which the fluid enters the flow channel well and the speed at which the fluid flows out of the flow channel well, the liquid level in the flow channel well remains unchanged and stable.

[0011] After the liquid surface of the fluid is stable in the flow channel well, after the fluid enters the flow channel well from the liquid inlet, a vortex is formed in the vortex zone on the liquid surface under the action of the fluid flow impact. At this time, after the agent and / or gas that can react with the liquid is added to the vortex zone of the flow channel well, the agent and / or gas is stirred horizontally under the action of the vortex. At the same time, the agent and / or gas will also move downward under the action of the vortex, so that the agent and / or gas can be fully mixed and reacted with the fluid. Compared with the existing technology using mechanical stirring, there is no dead corner of stirring, which solves the problem of mixing and stirring dead corners caused by uneven dispersion and uneven stirring of the agent and / or gas in the fluid.

[0012] Because the vortex zone and the smooth zone are interconnected, a small amount of slag generated by the reaction of the added agent and / or gas with impurities in the fluid will also diffuse and float into the smooth zone. The smooth zone is separated from the vortex zone by the partition. In this way, the smooth zone is not directly impacted by the fluid entering from the liquid inlet. The liquid in the smooth zone is more stable than the liquid in the vortex zone, and the slag in the flow channel well tends to accumulate in the smooth zone. The slag on the surface of the liquid in the smooth zone is then directly or indirectly removed through the slag outlet, thereby achieving slag cleaning. At the same time, the partition also has a certain blocking effect on the slag in the smooth zone, preventing it from spreading to the vortex zone.

[0013] The above technical solution has the following beneficial effects:

[0014] 1. This solution realizes online feeding in the flow channel well during the liquid flow process, without the need to feed in the previous container. During the feeding process, the vortex zone uses the vortex generated by the fluid flow to disperse the agent and / or gas added to the vortex zone under the action of the vortex. The added agent and / or gas can be fully stirred, mixed and reacted with the liquid. Compared with the existing technology using mechanical stirring, there will be no problem of stirring and mixing dead corners, which is conducive to improving the efficiency and quality of fluid purification.

[0015] 2. After feeding, a small amount of slag will be generated in the liquid. The liquid surface in the stable area is more stable than that in the vortex area. The slag is easy to gather and float in the stable area, thereby increasing the aggregation of the slag and facilitating the salvage of the slag in the flow channel well. There is no need to completely discharge the liquid into the next device before slagging, which is conducive to improving the efficiency and quality of slagging, thereby improving the efficiency and quality of fluid purification.

[0016] 3. In this solution, the fluid continuously enters the flow channel well from the liquid inlet channel, and the fluid is then discharged from the flow channel well through the liquid outlet channel, thereby realizing the feeding of the liquid during the flow process. In this way, the liquid does not need to be fed and mixed in the previous container before entering the flow channel well before being discharged. Compared with feeding and mixing in the previous container, the fluid is discharged from the previous container while being fed and mixed, that is, online feeding of the liquid is realized. The entire feeding process does not take up the liquid transfer time, nor does it take up the time for feeding in the previous container, thereby greatly saving the time for liquid purification as a whole and improving the overall efficiency of liquid treatment.

[0017] 4. The slagging process is to slag the liquid in the flow channel well. Compared with the slagging treatment in the previous container before the fluid enters the flow channel well, the volume of the flow channel well is much smaller than the volume of the previous container. Compared with the stirring and slagging treatment in the larger volume of the previous container, the scope of stirring and slagging is narrowed. The stirring and slagging treatment in the flow channel well is more efficient and has better effects.

[0018] 5. If the fluid needs to be kept warm at high temperature, since this solution does not require feeding and slagging operations in the upper container, there is no need to set a large opening in the upper container, thereby reducing heat loss and energy waste inside the upper container.

[0019] In summary, this solution solves multiple problems, including uneven and insufficient mixing of the refining agent and / or gas with the liquid in the previous container, heat loss and energy waste, and long purification times and low efficiency, while also achieving multiple significant technical benefits. While existing solutions to these problems exist, they often fail to simultaneously address multiple issues and achieve multiple benefits.

[0020] Preferably, as an improvement, the connection portion between the liquid inlet channel and the flow channel well is located at the end of the side wall of the vortex area, the connection portion between the liquid outlet channel and the flow channel well is located at the other end of the side wall of the vortex area, and the partition portion includes a slag blocking portion and a flow guide portion;

[0021] The side wall of the liquid inlet channel close to the stable area is connected to the guide portion, or the side wall of the liquid outlet channel close to the stable area is connected to the guide portion;

[0022] The slag blocking portion is located on a side of the guide portion close to the stable area.

[0023] Thus, through this solution, when the side wall of the liquid inlet channel near the stable area is connected to the guide part, when the liquid flows from the liquid inlet channel into the flow channel well, the liquid flows toward the vortex area under the action of the guide part. The guide part plays a role in guiding the flow of the liquid, reducing the flow of liquid toward the stable area and reducing the impact on the liquid in the stable area. At the same time, the liquid flowing into the vortex area is more likely to form a vortex under the guidance of the guide part. The function of the slag blocking part is to block the slag on the surface of the liquid in the stable area, control the slag floating on the liquid surface within the range of the stable area, and reduce the flow of slag toward the vortex area.

[0024] When the side wall of the liquid outlet channel close to the stable area is connected to the guide portion, the guide portion can also play a certain guiding role for the liquid to enter the liquid outlet channel.

[0025] Preferably, as an improvement, the liquid inlet of the liquid outlet is connected to a baffle; a slag return port is provided on the portion of the partition near the liquid outlet, and the baffle and the slag return port are opposite to each other. Although slag is gathered in the stable area of ​​the flow channel well, slag will still enter the liquid outlet when the fluid flows to the liquid outlet. For this reason, this solution sets a baffle at the liquid inlet of the liquid outlet, and the baffle blocks the slag floating in the liquid entering the liquid outlet, reducing the amount of slag entering the liquid outlet. At the same time, the baffle and the slag return port are opposite to each other, and the slag blocked by the baffle enters the stable area through the slag return port under the action of the baffle diversion and is collected in the stable area. The slag content in the liquid discharged from the liquid outlet is reduced, which can reduce the workload of slag removal in the next container. Therefore, this solution achieves a better purification effect on the fluid.

[0026] Preferably, as an improvement, the flow channel well is rotatably connected to a rotor shaft inserted into the flow channel well, the rotor shaft is hollow, an inlet is provided at a portion of the rotor shaft located outside the flow channel well, and an outlet is provided at a portion of the rotor shaft located inside the flow channel well.

[0027] Thus, with this solution, the rotor shaft extends deep into the flow channel well, and the agent and / or gas is added to the rotor shaft through the inlet. The agent and / or gas flows out of the rotor shaft outlet, thereby adding the agent and / or gas to the interior of the flow channel well. The rotor shaft then rotates to agitate the liquid, thereby more thoroughly mixing the agent and / or gas with the fluid. The rotor's stirring direction can be opposite to the direction of the fluid vortex rotation, thereby increasing the cutting of the fluid, facilitating the formation of turbulent flow in the liquid and further ensuring more thorough mixing of the agent and / or gas with the fluid.

[0028] Preferably, as an improvement, an electromagnetic inductor for generating a magnetic field is provided on the outside of the flow channel well, and the magnetic field acts on the fluid.

[0029] By energizing the electromagnetic inductor, it can generate a magnetic field. Under the action of the magnetic field, the liquid in the flow channel well can continuously roll up and down in the flow channel well, thereby enhancing the turbulence phenomenon and facilitating the full mixing of the liquid with the agent and / or gas added to the flow channel well.

[0030] Preferably, as an improvement, the electromagnetic sensor includes a first electromagnetic sensor and a second electromagnetic sensor, the magnetic field generated by the first electromagnetic sensor is stronger than the magnetic field of the second electromagnetic sensor, the first electromagnetic sensor is located on the outside of the side of the flow channel well where the vortex area is provided, and the second electromagnetic sensor is located on the outside of the side of the flow channel well where the smooth area is provided.

[0031] In this solution, the magnetic field generated by the first electromagnetic inductor is stronger than that of the second electromagnetic inductor. The first electromagnetic inductor, being closer to the vortex zone, can exert a greater force on the vortex zone. While the second electromagnetic inductor is closer to the stable zone, it generates a weaker magnetic field, thus keeping the liquid in the stable zone relatively stable. At this time, the liquid in the stable zone is less agitated by the magnetic field.

[0032] Preferably, as an improvement, the volume of the first electromagnetic inductor is larger than the volume of the second electromagnetic inductor, and the volume of the stable zone is smaller than the volume of the vortex zone.

[0033] The reason why two electromagnetic sensors are set up in this scheme and the volume of the first electromagnetic sensor is larger than that of the second electromagnetic sensor is because: on the one hand, it is based on the layout setting of the flow channel well, the liquid inlet and the liquid outlet structure. The second electromagnetic sensor is smaller in volume and can be located on the side of the acute angle between the liquid inlet and the liquid outlet, while the first electromagnetic sensor is larger in volume and can be located on the side of the obtuse angle between the liquid inlet and the liquid outlet. In this way, the angle between the liquid inlet and the liquid outlet, the size factors of the first electromagnetic sensor and the second electromagnetic sensor are taken into consideration, and the structural setting and layout are reasonable; on the other hand, the second electromagnetic sensor is smaller in volume and has less effect on the magnetic field of the liquid. At the same time, it is closer to the stable area, so that the magnetic field effect on the liquid in the stable area is smaller, which can keep the liquid in the stable area in a relatively stable state and have less impact on the slag treatment. The first electromagnetic sensor is larger in volume and has a greater magnetic field effect on the liquid. The first electromagnetic sensor is closer to the vortex area, which can provide sufficient magnetic field force to the liquid in the vortex area, and can fully stir and mix the liquid in the vortex area.

[0034] Preferably, as an improvement, the first electromagnetic inductor is below the second electromagnetic inductor. As a result, the first electromagnetic inductor is larger in size and heavier, so placing it below the second electromagnetic inductor lowers the center of gravity of the entire device, making the device more stable and safer.

[0035] Preferably, as an improvement, a heat-insulating layer is provided on the outside of the flow channel well, and the heat-insulating layer is used to keep the liquid in the flow channel well warm.

[0036] In addition, this application also provides another solution:

[0037] A fluid purification method uses a fluid purification device, the fluid purification device includes a flow channel well, a partition is fixedly provided inside the flow channel well, and the partition divides the flow channel well into a vortex area and a stable area;

[0038] The fluid purification method comprises the following steps:

[0039] S1, injecting liquid from the liquid inlet into the vortex area of ​​the flow channel well, and the liquid level in the flow channel well gradually rises;

[0040] S2, when the liquid level in the flow channel well reaches the top of the liquid inlet channel, the bottom of the liquid inlet channel, or a position between the top and bottom of the liquid inlet channel, the speed of the fluid entering the flow channel well and the speed of the fluid flowing out of the flow channel well are controlled to keep the liquid level in the flow channel well stable. As the fluid is continuously injected, a vortex is generated on the surface of the liquid in the flow channel well;

[0041] S3, adding an agent and / or gas for reacting with impurities in the liquid into the vortex region of the flow channel well;

[0042] S4, performing a deslagging process on the liquid in the stable area of ​​the flow channel well.

[0043] Preferably, as an improvement, in S2, a magnetic field is applied to the outside of the flow channel well, so that the liquid in the flow channel well rolls up and down and stirs under the action of the magnetic field.

[0044] Preferably, as an improvement, in S2, an agent and / or gas is added into the axial flow channel of the hollow rotor.

[0045] Preferably, as an improvement, the rotation direction of the rotor shaft is opposite to the horizontal flow direction of the fluid.

[0046] Through this solution, the fluid tumbles up and down under the action of the magnetic field, achieving upward and downward agitation of the liquid. Simultaneously, the fluid flowing in the vortex zone also forms vortices. The resulting vortices and the fluid's magnetic field both have a stirring effect on the fluid itself. Under the action of the magnetic field and the vortex, the two methods of agitating the liquid, creating turbulence, complement and enhance each other, allowing the fluid to be fully mixed with the refining agent and / or gas. Compared to mechanical agitation, there are no dead corners for mixing or agitation, which is beneficial for improving the efficiency and quality of purification. Furthermore, this solution performs slag removal in the stable zone, where the liquid is relatively stable and the slag in the stable zone gathers together. This deslag treatment of the fluid in the stable zone of the flow channel well is highly efficient and effective. Furthermore, this solution performs mixing and purification of the fluid during discharge and flow. That is, the fluid is mixed and purified while it is being discharged, without having to wait for the fluid to be fully mixed before discharge, thereby improving the overall efficiency of the fluid treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a front view of the fluid purification device in Example 1.

[0048] Figure 2 for Figure 1 A top sectional view of .

[0049] Figure 3 This is a partial cross-sectional view of the fluid purification device in Example 2.

[0050] Figure 4 for Figure 3 A top sectional view of .

[0051] Figure 5 This is a top sectional view of the fluid purification device in Example 3.

[0052] Figure 6 for Figure 2 A top view of the first partition in FIG.

[0053] Figure 7A top view of another type of partition. DETAILED DESCRIPTION

[0054] The following is further described in detail through specific implementation methods:

[0055] The figure marks in the drawings of the specification include: flow channel well 1, vortex area 2, liquid inlet channel 3, liquid outlet channel 4, stable area 5, first partition 6, slag blocking part 61, guide part 62, second partition 7, rotor turntable 8, rotor shaft 9, slag pool 10, first electromagnetic inductor 11, second electromagnetic inductor 12, outer ring 13, insulation layer 14, baffle 15, slag return port 16, inner ring 17.

[0056] Example 1

[0057] Basically as attached Figure 1-Figure 2 As shown, this embodiment relates to a fluid purification device, which is used to purify fluid. Of course, the type of fluid is not limited. For example, the purification of wastewater and the purification of metal liquid are used. The device of this embodiment is specifically described with aluminum alloy melt as the purification object.

[0058] A fluid purification device, combined with Figure 1 and Figure 2 As shown, the flow channel well 1 includes a liquid inlet channel 3 and a liquid outlet channel 4 connected to the side wall of the flow channel well 1. The liquid inlet channel 3 and the liquid outlet channel 4 are both arranged horizontally, and the flow channel well 1 is arranged vertically. The top of the liquid inlet channel 3 and the top of the liquid outlet channel 4 are both in an open state. Of course, the top of the liquid inlet channel 3 and the top of the liquid outlet channel 4 can also be in a closed state. In this embodiment, the liquid inlet channel 3 and the liquid outlet channel 4 are both close to the top of the flow channel well 1. The liquid inlet channel 3 and the liquid outlet channel 4 can be at the same height, or the liquid inlet channel 3 can be higher than the liquid outlet channel 4 by 5 mm to 1 cm.

[0059] A vertical partition is fixedly provided inside the flow channel well 1. The partition is specifically a plate-like structure. The top of the liquid inlet 3 and the top of the liquid outlet 4 are both lower than the top of the partition, and the bottom of the liquid inlet 3 and the bottom of the liquid outlet 4 are both higher than the bottom of the partition. The partition in this embodiment includes a first partition 6 and a second partition 7. The first partition 6 and the second partition 7 are welded or fixed to the inner wall of the flow channel well 1 by bolts. In this embodiment, the first partition 6 and the second partition 7 are symmetrically arranged. The horizontal line connecting the first partition 6 and the second partition 7 divides the interior of the flow channel well 1 into a vortex zone 2 and a smooth zone 5 that are interconnected. Because the bottom of the partition does not abut against the bottom of the flow channel well 1, the vortex zone 2 and the smooth zone 5 are in a connected state.

[0060] The flow channel well 1 is provided with a slag outlet that is opposite to and communicates with the stable area 5. The slag outlet can be located at the top of the flow channel well 1 or on a side wall of the flow channel well 1 near the top. The liquid inlet 3 is connected to the side wall of the vortex area 2, and the liquid inlet direction of the liquid inlet 3 is directed toward the inner wall of the vortex area 2. Thus, through this embodiment, the aluminum alloy liquid that has been melted in the smelting furnace (the upper container) enters the flow channel well 1 through the liquid inlet 3. Initially, the flow channel 1 is empty. After entering the liquid inlet 3, the liquid flows downward into the flow channel 1 under the action of gravity. The liquid does not discharge at this time, and the liquid level gradually rises. When the liquid level reaches the height of the liquid outlet 4, the liquid in the flow channel 1 flows out of the flow channel 1 through the liquid outlet 4. Then, by controlling the speed at which the liquid enters the flow channel 1 from the liquid inlet 3 and the speed at which the liquid exits the flow channel 1 (flow rate control method: for example, gates are installed at the location where the smelting furnace is connected to the liquid inlet 3 and at the location where the flow channel 1 is connected to the liquid outlet 4, and the flow rate is controlled by controlling the degree of opening of the gates), the two flow rates are equalized, thereby maintaining a stable liquid level in the flow channel 1. At this point, the stable liquid level in the flow channel 1 is located between the top and bottom of the partition, and the liquid level does not exceed the top of the liquid inlet 3 or the top of the liquid outlet 4.

[0061] After the liquid surface of the fluid stabilizes in the flow channel well 1, as the fluid continuously enters the flow channel well 1 from the liquid inlet 3, a vortex is formed on the surface of the liquid in the vortex zone 2 under the action of the fluid flow impact. The vortex has a certain degree of circumferential agitation on the liquid and a stirring that causes the liquid to move downward. At this time, after the granular refining agent and / or gas (argon or chlorine) is added to the vortex zone 2 of the flow channel well 1, the refining agent and / or gas is stirred horizontally under the action of the vortex. At the same time, the refining agent and / or gas will also move downward under the action of the vortex, so that the refining agent and / or gas can be fully mixed and reacted with the fluid. Compared with the existing technology using mechanical agitation, this solves the problem of uneven dispersion and uneven stirring of the refining agent and / or gas in the fluid, which leads to mixing and stirring dead corners.

[0062] Of course, the addition of refining agent and / or gas can be done manually by adding it to the vortex zone 2 of the flow channel well 1, or by setting a graphite rotor shaft 9, the interior of the rotor shaft 9 is hollow, and the bottom of the rotor shaft 9 is provided with a rotor turntable 8, the portion of the rotor shaft 9 located outside the flow channel well 1 is provided with an inlet, and the portion of the rotor shaft 9 located inside the flow channel well 1 is provided with an outlet, so that the refining agent and / or gas is added to the rotor shaft 9 through the inlet, and the refining agent and / or gas then flows out through the outlet of the rotor shaft 9, thereby achieving the addition of the refining agent and / or gas to the interior of the flow channel well 1. Then, the rotor shaft 9 is driven to rotate by a motor outside the device, and the rotor shaft 9 drives the rotor turntable 8 to stir the liquid, so that the refining agent and / or gas mixes with the fluid and reacts more fully. Of course, the stirring direction of the rotor shaft 9 can be set according to actual conditions, for example, the same as or opposite to the rotation direction of the fluid vortex. When it is opposite, it can increase the cutting of the fluid by the rotor turntable 8, which is conducive to forming turbulent flow in the liquid and further making the refining agent and / or gas mix with the fluid more fully.

[0063] In this embodiment, the gas added to the rotor shaft 9 is a gas with a certain pressure (for example, the gas is pressed into the rotor shaft 9 by a pump), so that the gas can better enter the liquid. Of course, when the gas and the refining agent powder are added together, the gas can drive the refining agent powder to be ejected from the outlet of the rotor shaft 9.

[0064] The added refining agent can react with impurities in the liquid to form slag, and the chlorine can react with alkali metals such as sodium, potassium, and calcium in the aluminum alloy melt. By introducing argon into the flow channel well 1, hydrogen in the aluminum alloy melt in the flow channel well 1 can be squeezed out.

[0065] Since the vortex zone 2 and the smooth zone 5 are interconnected, a part of the slag generated in the flow channel well 1 will diffuse and float into the smooth zone 5. The smooth zone 5 is separated from the vortex zone 2 by the first partition 6 and the second partition 7. In this way, the liquid in the smooth zone 5 will not be directly impacted by the fluid entering from the liquid inlet 3. The liquid in the smooth zone 5 is more stable than the liquid in the vortex zone 2. The slag is easy to gather in the smooth zone 5, and then the slag floating on the surface of the liquid is directly slag-processed through the slag mouth (by manually operating the slag-processing tool or using a slag-processing machine to drive the slag-processing plate through the slag mouth into the smooth zone 5 to slag), or the slag on the surface of the liquid in the smooth zone 5 is indirectly slag-processed (the slag in the smooth zone 5 is introduced into the slag-processing pool 10 through the slag mouth, and then the slag-processing tool is manually operated or the slag-processing machine is used to drive the slag-processing plate to slag the slag in the slag-processing pool 10).

[0066] In this embodiment, the liquid flows out of the liquid outlet 4 and flows to the holding furnace (next device). After standing in the holding furnace, the majority of the slag in the liquid is further deslagging. Therefore, this embodiment eliminates the need for charging and deslagging operations in the smelting furnace, changing the traditional method of purification within the smelting furnace. The charging and certain deslagging operations can be performed during the transfer of the liquid from the molten aluminum to the holding furnace. There is no need to wait for the liquid in the smelting furnace to fully mix with the refining agent or gas before transferring the liquid. The charging process does not occupy the fluid transfer time, significantly reducing the time for fluid purification and transfer, and improving overall production and manufacturing efficiency.

[0067] In this embodiment, the shape of the flow channel well 1 when viewed from above is circular. Of course, in other embodiments, the shape of the flow channel well 1 when viewed from above can also be set to be square, polygonal, etc. Regardless of the shape of the flow channel well 1 when viewed from above, the side walls of the vortex area 2 are all convex toward the outside of the flow channel well 1, so that the liquid is conducive to the formation of a vortex after flowing out of the liquid inlet 3. In this embodiment, the side walls of the vortex area 2 are in an arc shape, which is more conducive to the formation of a fluid vortex. Figure 2 As shown, in order to make the vortex formation better, when the vortex area of ​​the flow channel well is arc-shaped, it is preferred that the liquid inlet channel 3 is obliquely pointed to the flow channel well 1 in the horizontal direction, that is, the liquid inlet direction of the liquid inlet channel 3 cannot be perpendicular to the tangent of the flow channel well 1. Because when the liquid inlet direction of the liquid inlet channel 3 is perpendicular to the tangent of the flow channel well 1, after the liquid enters the flow channel well 1, it may not first flow along the inner wall of the vortex area 2 of the flow channel well 1 (for example, when the liquid inlet direction of the liquid inlet channel 3 is opposite to the stable area 5). However, when the liquid inlet channel 3 is obliquely pointed to the flow channel well 1 in the horizontal direction, after the liquid enters the flow channel well 1, it will first flow along the inner wall of the vortex area 2 of the flow channel well 1. The inner wall of the flow channel well 1 plays a guiding role on the flow of the liquid earlier, which is conducive to the formation of the vortex. It is further preferred that the acute angle between the liquid inlet channel 3 and the tangent of the flow channel well 1 in the horizontal direction is 0-45 degrees.

[0068] In this embodiment, the space of the stable zone 5 is smaller than that of the vortex zone 2. The smaller space of the stable zone 5 allows for greater slag aggregation, thereby improving the quality and efficiency of slag removal. At the same time, the smaller space of the stable zone 5 means that the slag opening is not too large, which can reduce heat loss and energy waste.

[0069] In addition, combined Figure 6 As shown, in other embodiments, the first partition 6 is bent and includes a guide portion 62 and a slag blocking portion 61. The slag blocking portion 61 and the guide portion 62 are integrally formed or welded together. Figure 2As shown, the portion where the liquid inlet 3 and the flow channel well 1 are connected is located at the end of the side wall of the vortex zone 2, and the end of the side wall of the liquid inlet 3 close to the stable zone 5 is welded to the end of the guide portion 62 of the first partition 6. The slag blocking portion 61 of the first partition 6 is located on the side of the guide portion 62 close to the stable zone 5, that is, the slag blocking portion 61 is bent away from the vortex zone 2. In this way, when the liquid flows into the flow channel well 1 from the liquid inlet 3, the liquid flows toward the vortex zone 2 under the action of the guide portion 62 of the first partition 6. The guide portion 62 plays a role in guiding the flow of the liquid, avoiding the liquid from flowing toward the stable zone 5 and reducing the impact on the liquid in the stable zone 5. At the same time, the liquid flowing into the vortex zone 2 is more likely to form a vortex under the guiding action of the guide portion 62. The function of the slag blocking portion 61 of the first partition 6 is to block the slag on the surface of the liquid in the stable zone 5, control the slag floating on the liquid surface within the range of the stable zone 5, and reduce the floating slag from flowing toward the vortex zone 2.

[0070] Combine Figure 2 As shown, the connection portion between the liquid outlet 4 and the flow channel well 1 is located at the other end of the side wall of the vortex area 2, and the second partition 7 and the first partition 6 have the same structure. Figure 2 The first and second partitions 6 and 7 are symmetrical about a vertical centerline (not shown). Similarly, the end of the sidewall of the liquid outlet 4 near the stable zone 5 is welded to the end of the flow guide 62 of the second partition 7. The slag stop 61 of the second partition 7 is located on the side of the flow guide 62 of the second partition 7 near the stable zone 5. This creates a gap between the first and second partitions 6 and 7, which does not affect the rotation of the rotor. At the same time, the first partition 6, the slag stop 61, and the slag stop 61 of the second partition 7 are all capable of blocking slag. In addition, the guide part 62 of the first partition 6 is connected to the end of the liquid inlet channel 3 close to the side wall of the stable area 5, and the guide part 62 of the second partition 7 is connected to the end of the liquid outlet channel 4 close to the side wall of the stable area 5. The end of the guide part 62 of the first partition 6 and the end of the guide part 62 of the second partition 7 are welded to the slag pool 10 located outside the flow channel well 1. In this way, the first partition 6 and the second partition 7 can also be regarded as part of the slag pool 10. The slag located in the stable area 5 can enter the slag pool 10 through the slag mouth. At this time, the liquid surface of the slag pool 10 can be slaged. The structural design is ingenious.

[0071] Of course, in other embodiments, the partition may also be Figure 7The partition is a single unit, comprising a slag retaining portion 61 and flow guides 62 at either end. The right-hand flow guide 62 is welded or bolted to the end of the liquid inlet 3 near the sidewall of the stable zone 5, while the left-hand flow guide 62 is welded or bolted to the end of the liquid outlet 4 near the sidewall of the stable zone 5. This also serves to retain slag from the stable zone 5 and guide the liquid. Of course, this partition should be positioned away from the rotor shaft 9. The partition can also be configured in different shapes depending on the actual situation.

[0072] Of course, a drain pipe may be provided at the bottom of the flow channel well 1, and a valve may be provided on the drain pipe. When the flow channel well 1 is in normal use, the valve is in a closed state, thereby maintaining a normal liquid level in the flow channel well 1. When the flow channel well 1 needs to be inspected and the liquid in the flow channel well 1 needs to be completely drained, the valve is opened to discharge the liquid from the drain pipe.

[0073] Combine Figure 3 and Figure 4 As shown, in other embodiments, the flow channel well 1 includes an inner ring 17, an insulation layer 14, and an outer ring 13. The outer ring 13 is positioned outside the inner ring 17, and the insulation layer 14 is located between the inner ring 17 and the outer ring 13. In this embodiment, the outer ring 13 is made of stainless steel, while the inner ring 17 is made of stainless steel or castable. The insulation layer 14 between the outer ring 13 and the sidewall of the flow channel well 1 is made of an insulating material (such as aluminum silicate or nano-insulation material). The provision of the insulation layer 14 can insulate the aluminum alloy melt within the flow channel well 1, ensuring that the temperature does not fall below the melting point. Of course, a heating rod can also be installed within the flow channel well 1 to heat the aluminum alloy melt, ensuring that the temperature does not fall below the melting point.

[0074] The thicknesses of the inner ring 17, the outer ring 13 and the thermal insulation layer 14 in this embodiment can be set according to actual conditions. For example, when the inner ring 17 is made of a castable material, the thickness of the outer ring 13 can be 5-8 mm, the thickness of the thermal insulation layer 14 can be 20-30 mm, and the thickness of the inner ring 17 can be 70-90 mm. When the inner ring 17 is made of stainless steel, the thickness of the inner ring 17 can be reduced and the thickness of the thermal insulation layer 14 can be increased compared to when the inner ring 17 is made of a castable material.

[0075] Example 2

[0076] Combine Figure 3 and Figure 4 As shown, in this embodiment, electromagnetic sensors capable of generating a magnetic field are provided on the outside of the flow channel well 1, and the electromagnetic sensors act on the fluid. The electromagnetic sensors can be one group or two groups.

[0077] By energizing the electromagnetic inductor, it can generate countless orange-segment-shaped (similar to the shape of the earth's magnetic field) magnetic fields (traveling wave magnetic fields). The magnetic field has a certain slag removal effect: the huge difference in conductivity and magnetic permeability between metal and non-metallic particles in the liquid can separate them under a strong magnetic field, thereby quickly removing fine non-metallic inclusions in the liquid.

[0078] At the same time, the liquid in the flow channel well 1 can continuously roll up and down in the flow channel well 1 under the action of the magnetic field. Under the action of the original liquid stirring, the vertical stirring of the liquid is realized, thereby enhancing the turbulence of the liquid, which is conducive to the full reaction of the liquid with the refining agent and / or gas added to the flow channel well 1.

[0079] The electromagnetic inductor in this embodiment consists of a layered iron core and a coil winding. The coil is dry-insulated and fixed around the iron core. The coil is supplied with three-phase low-frequency AC power (0.5-5 Hz) and is controlled by a frequency converter. By changing the current, frequency and phase sequence of the variable frequency power supply, the magnitude and direction of the magnetic field force can be changed, thereby changing the magnitude and direction of the stirring force on the liquid.

[0080] Regardless of whether the electromagnetic inductors are one group or two groups, the total vertical height of the electromagnetic inductors is not less than 800mm. For example, when there is one group of electromagnetic inductors, it means that the height of a single electromagnetic inductor is not less than 800mm. When there are two groups of electromagnetic inductors, the sum of the heights of the two electromagnetic inductors is not less than 800mm. During electromagnetic stirring, the current is in the range of 1-1000A. In this embodiment, the current is preferably 300A-800A. Since the flow channel well 1 is circular, the electromagnetic inductor in this embodiment is arc-shaped. Depending on the diameter of the flow channel well 1, the inner diameter of the electromagnetic inductor can be set to 0.5-2m and the outer diameter can be 0.7-2.2m. The coil is wound with copper wire or hollow copper tube. If a hollow copper tube is used, cooling water can be passed into the copper tube. The number of turns of each coil group is 20-200 turns, preferably 100 turns. The number of turns of the coil can be set according to actual conditions. The number of coil windings can be 4-8, and the number of coil windings can be set according to actual conditions.

[0081] The electromagnetic inductor in this embodiment includes a first electromagnetic inductor 11 and a second electromagnetic inductor 12. Both the first electromagnetic inductor 11 and the second electromagnetic inductor 12 are arc-shaped. The volume of the first electromagnetic inductor 11 is larger than that of the second electromagnetic inductor 12. The first electromagnetic inductor 11 is located on the outside of the side of the flow channel well 1 where the vortex zone 2 is located, specifically outside the outer ring 13. The second electromagnetic inductor 12 is located on the outside of the side of the flow channel well 1 where the stable zone 5 is located, specifically outside the outer ring 13. Because the volume of the first electromagnetic inductor 11 is larger than that of the second electromagnetic inductor 12, the first electromagnetic inductor 11 is positioned below the second electromagnetic inductor 12, thereby making the entire device more stable.

[0082] Thus, the first electromagnetic inductor 11 and the second electromagnetic inductor 12 are each connected to a frequency converter. By varying the current, frequency, and phase sequence of the variable frequency power supply, the magnitude and direction of the magnetic field forces of the first and second electromagnetic inductors 11, 12 can be varied, thereby varying the magnitude and direction of the stirring force exerted on the liquid (the directions of the stirring forces exerted by the two sets of electromagnetic inductors are set based on practical circumstances, for example, in the same vertical direction or in opposite vertical directions), thereby controlling turbulence. In this embodiment, the first electromagnetic inductor 11 is relatively far from the stable region 5, while the second electromagnetic inductor 12 is relatively small, generating a relatively small magnetic field force. Therefore, the second electromagnetic inductor 12, which is closer to the stable region 5, exerts a relatively small electromagnetic effect on the liquid in the stable region 5, allowing the liquid in the stable region 5 to remain relatively stable. In contrast, the first electromagnetic inductor 11 is relatively large, generating a relatively large magnetic field force. Therefore, the first electromagnetic inductor 11 exerts a large electromagnetic effect on the liquid in the vortex region 2, allowing the liquid in the vortex region 2 to be sufficiently agitated. However, the first electromagnetic inductor 11 is relatively far from the stable region 5, preventing it from exerting a significant electromagnetic effect on the stable region 5.

[0083] This embodiment mainly utilizes the force of the magnetic field generated by the electromagnetic inductor on the liquid to achieve the stirring of the liquid. Compared with mechanical stirring, there will be no problem of stirring dead corners, which improves the efficiency and effect of purification. The above embodiment discloses two groups of electromagnetic inductors, and the number and arrangement of electromagnetic inductors can also be set according to actual conditions. For example, the number of electromagnetic inductors is set to one group, and one group of electromagnetic inductors is sleeved on the outside of the flow channel well. By energizing one electromagnetic inductor, one electromagnetic inductor can also generate countless orange segment-shaped traveling wave magnetic fields, which act on the liquid, vertically stirring the liquid and enhancing turbulence.

[0084] Example 3

[0085] Combine Figure 5As shown, in this embodiment, a baffle 15 is welded to the liquid inlet of the liquid outlet 4; a slag return port 16 is provided on the second partition 7, and the baffle 15 and the slag return port 16 are opposite to each other. Therefore, although the above embodiment causes slag to accumulate in the stable area 5 of the flow channel well 1, a small amount of slag will still enter the liquid outlet 4 when the fluid flows to the liquid outlet 4. For this reason, this solution sets a baffle 15 at the liquid inlet of the liquid outlet 4. The baffle 15 blocks the slag in the liquid entering the liquid outlet 4, reducing the amount of slag entering the liquid outlet 4. At the same time, the baffle 15 and the slag return port 16 are opposite to each other. The slag blocked by the baffle 15 enters the stable area 5 through the slag return port 16 under the action of the baffle to guide the flow and is collected in the stable area 5, reducing the slag in the flow channel well 1 from flowing out of the liquid outlet 4, thereby reducing the amount of slag in the holding furnace. Therefore, this solution achieves a better purification effect on the fluid.

[0086] Example 4

[0087] This embodiment discloses a fluid purification method, which uses the fluid purification device in the above embodiment to mainly purify aluminum alloy melt. Of course, in other embodiments, other liquids can also be purified, such as wastewater treatment.

[0088] The specific purification method in this embodiment includes the following steps:

[0089] S1. Fluid is introduced into the flow channel 1 through the liquid inlet 3 from the side of the flow channel 1 where the vortex zone is located, with the direction of the fluid introduction pointing toward the inner wall of the vortex zone. The liquid is injected from the liquid inlet into the vortex zone of the flow channel, and the liquid level in the flow channel gradually rises.

[0090] S2. At the same time, when the liquid level reaches between the outlet channel 4 and the top and bottom (inclusive), and between the top and bottom of the liquid inlet channel 3, the speed at which the fluid enters and exits the flow channel well 1 is controlled so that the liquid level in the flow channel well 1 remains stable and is located between the top and bottom of the partition. In this way, a vortex is formed after the liquid enters the flow channel well 1. At the same time, the electromagnetic inductor is energized to stir the fluid up and down in the flow channel well 1.

[0091] S3, simultaneously, refining agent and / or gas is added into the flow channel well 1 manually or through the rotor shaft 9. The added refining agent and / or gas fully reacts and mixes with the liquid under the action of vortex stirring and magnetic field stirring to form slag;

[0092] In step S4, the slag floats upward to the relatively stable area 5, and then the fluid in the stable area 5 is subjected to a slag removal process, which can be carried out in the same manner as in Example 1. After the fluid flows into the holding furnace, the liquid in the holding furnace is subjected to a slag removal process.

[0093] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A fluid purification device, characterized in that: The invention comprises a flow channel well, a liquid inlet channel and a liquid outlet channel connected to the side wall of the flow channel well. The flow channel well is vertically arranged, and the liquid inlet channel and the liquid outlet channel are both close to the top of the flow channel well. A vertical partition is fixedly provided inside the flow channel well. The top of the liquid inlet channel and the top of the liquid outlet channel are both lower than the top of the partition, and the bottom of the liquid inlet channel and the bottom of the liquid outlet channel are both higher than the bottom of the partition. The partition divides the inside of the flow channel well into a vortex zone and a smooth zone which are interconnected. A slag outlet is provided on the flow channel well which is connected to the smooth zone. The slag outlet is arranged at the top of the flow channel well or on the side wall of the flow channel well near the top; the liquid inlet channel is connected to the side wall of the vortex zone, and the liquid inlet direction of the liquid inlet channel points to the inner wall of the vortex zone.

2. A fluid purification device according to claim 1, characterized in that: The connection portion between the liquid inlet channel and the flow channel well is located at the end of the side wall of the vortex area, the connection portion between the liquid outlet channel and the flow channel well is located at the other end of the side wall of the vortex area, and the partition portion includes a slag blocking portion and a flow guide portion; The side wall of the liquid inlet channel close to the stable area is connected to the guide portion, or the side wall of the liquid outlet channel close to the stable area is connected to the guide portion; The slag blocking portion is located on a side of the flow guide portion close to the stable area.

3. A fluid purification device according to claim 1, characterized in that: The liquid inlet of the liquid outlet is connected with a baffle; a slag return port is opened on the portion of the partition close to the liquid outlet, and the baffle and the slag return port are opposite to each other.

4. A fluid purification device according to claim 1, characterized in that: The flow channel well is rotatably connected to a rotor shaft inserted into the flow channel well. The rotor shaft is hollow. An inlet is provided at a portion of the rotor shaft located outside the flow channel well, and an outlet is provided at a portion of the rotor shaft located inside the flow channel well.

5. A fluid purification device according to any one of claims 1 to 4, characterized in that: An electromagnetic inductor for generating a magnetic field is provided on the outside of the flow channel well, and the magnetic field acts on the fluid.

6. A fluid purification device according to claim 5, characterized in that: The electromagnetic sensor includes a first electromagnetic sensor and a second electromagnetic sensor. The magnetic field generated by the first electromagnetic sensor is stronger than the magnetic field of the second electromagnetic sensor. The first electromagnetic sensor is located outside the side of the flow channel well where the vortex area is provided, and the second electromagnetic sensor is located outside the side of the flow channel well where the stable area is provided.

7. A fluid purification method, characterized in that: Using the fluid purification device according to claim 1; The fluid purification method comprises the following steps: S1, injecting liquid from the liquid inlet into the vortex area of ​​the flow channel well, and the liquid level in the flow channel well gradually rises; S2, when the liquid level in the flow channel well reaches the top or the bottom of the liquid inlet channel or reaches a position between the top and the bottom of the liquid inlet channel, the speed of the fluid entering the flow channel well and the speed of the fluid flowing out of the flow channel well are controlled so that the liquid level in the flow channel well remains stable. As the fluid is continuously injected, a vortex is generated on the surface of the liquid in the flow channel well; S3, adding a granular refining agent and / or gas to the vortex region of the flow channel well for reacting with impurities in the liquid; S4, performing a deslagging process on the liquid in the stable area of ​​the flow channel well.

8. A fluid purification method according to claim 7, characterized in that: In S2, a magnetic field is applied to the outside of the flow channel well, so that the liquid in the flow channel well rolls up and down and stirs under the action of the magnetic field.

9. A fluid purification method according to claim 7, characterized in that: In S2, granular refining agent and / or gas is added into the axial flow channel of the hollow rotor.

10. A fluid purification method according to claim 9, characterized in that: The rotation direction of the rotor shaft is opposite to the rotation direction of the fluid vortex.

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