In-furnace aluminum dross treatment device and method of operating the same

Abstract

The present application relates to the field of metal manufacturing, in particular to a kind of in-furnace aluminium ash treatment device and its operating method, including cover and the top cover fixedly arranged on the upper end of cover, cover and top cover form waste gas recovery storehouse, top cover inside top end is fixedly arranged with connecting pipe, connecting pipe outside is provided with the isolation barrel also fixedly connected with top cover top end, isolation barrel outside is equipped with hollow barrel, hollow barrel upper end is fixedly connected with top cover top end, hollow barrel outside is provided with the bending type annular plate, cover inside is provided with lifting cover, lifting cover is used to reduce waste gas collection area.The present application can only realize the descent of lifting cover by the change of heat, so as to achieve the effect of reducing the area of waste gas collection, meanwhile, the structure is not provided with any electrically-driven facility, only rely on high temperature of waste gas itself to realize the above effect, not only reduce the cost of use, but also can utilize high temperature in waste gas again.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of in-furnace aluminium ash treatment device and its operating method, in particular to a kind of in-furnace aluminium ash treatment device, belong to metal manufacturing technical field. BACKGROUND

[0002] Rotary furnace plays a vital core role in aluminum powder processing, it is a kind of indirect heating heat treatment equipment using slowly rotating inclined cylinder to material, its core function is to convert raw materials such as aluminum ingot, aluminum scrap or coarse aluminum powder into high-quality aluminum powder with specific particle size, shape, oxygen content and physical and chemical properties through precise control of high-temperature heat treatment process.

[0003] And rotary furnace is usually equipped with exhaust hood, exhaust hood can recover waste gas generated by rotary furnace, and then filter and discharge by bag filter.

[0004] But the position of most exhaust hoods is too high, which leads to poor waste gas capture efficiency, thereby affecting the surrounding environment, and some manufacturers will install electric equipment and additional liftable cover to improve the capture efficiency of waste gas, but when rotary furnace is used, the cover body will have high temperature for a long time, and high temperature will cause the temperature of electric equipment to rise, which will cause irreversible adverse effects on electric equipment if used for a long time, thereby reducing the service life of electric control equipment, which increases the use cost.

[0005] Therefore, it is urgent to improve the in-furnace aluminium ash treatment device to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide an in-furnace aluminium ash treatment device, which can realize the descent of the lifting cover by changing the heat, so as to achieve the effect of reducing the area of waste gas collection, and the structure does not set any electrically driven facilities, but relies on the high temperature of waste gas itself to achieve the above effect, which not only reduces the use cost, but also reuses the high temperature in waste gas.

[0007] In order to achieve the above purpose, the main technical scheme adopted by the present application includes: an outer cover and a top cover fixedly arranged on the upper end of the outer cover, the outer cover and the top cover form a waste gas recovery chamber, a communication pipe is fixedly arranged on the inner top end of the top cover, an isolation barrel is arranged on the outer side of the communication pipe and is also fixedly connected with the top end of the top cover, a hollow barrel is sleeved on the outer side of the isolation barrel, the upper end of the hollow barrel is fixedly connected with the top end of the top cover, and a bent annular plate is arranged on the outer side of the hollow barrel.

[0008] The inner side of the cover is provided with a lifting cover for reducing the exhaust gas collection area, a through slot is arranged at the top end of the lifting cover and is in sliding connection with the hollow barrel, the bending type annular plate is in abutment with the inner top end of the lifting cover, the bending type annular plate is located below the through slot, and the bending type annular plate is provided with a pressure receiving bottom ring at one end.

[0009] The inner side of the cover is provided with a lifting cover for reducing the exhaust gas collection area, a through slot is arranged at the top end of the lifting cover and is in sliding connection with the hollow barrel, the bending type annular plate is in abutment with the inner top end of the lifting cover, the bending type annular plate is located below the through slot, and the bending type annular plate is provided with a pressure receiving bottom ring at one end.

[0010] The inner wall of the top cover is provided with a supporting wheel on the opposite sides, and the supporting wheel is used for limiting and assisting the lifting cover.

[0011] Preferably, a plurality of fixed seats are fixedly arranged on the circumferential side of the communication pipe, a spring is fixedly arranged on the lower side of each fixed seat, and the other end of each spring is connected with the pressure receiving bottom ring.

[0012] Preferably, a plurality of installation grooves are arranged on the pressure receiving bottom ring, the number and position of the installation grooves are the same as those of the springs, and one end of the spring is fixedly connected with the installation groove.

[0013] Preferably, the communication pipe and the isolation barrel have a gap therebetween.

[0014] Preferably, the material of the isolation barrel is metal, so as to increase the heat conduction effect.

[0015] Preferably, a plurality of lock seats are fixedly arranged at the two ends of the tail of the bending type annular plate, each two lock seats form a group, each group of lock seats is fixedly screwed through a fastening screw, and the lock seats are used for sleeving and locking the bending type annular plate.

[0016] Preferably, a supporting groove is arranged on the opposite sides of the lifting cover, the number of the supporting grooves on each side is two, and each supporting wheel is rollingly arranged in the supporting groove.

[0017] Preferably, an installation bottom plate is rotatably connected with the supporting wheel through a connecting rotating rod at both ends of the supporting wheel, a reset spring is arranged at the rotating connection point between the connecting rotating rod and the installation bottom plate, and the reset spring is used for supporting the slope of the connecting rotating rod.

[0018] Preferably, an electric heating plate is fixedly arranged on the opposite sides of the inner wall of the top cover, the number and position of the electric heating plate are the same as those of the installation bottom plate, and a second nitrogen gas pocket is fixedly arranged between the electric heating plate and the installation bottom plate.

[0019] Preferably, a furnace body base is provided on the inner side of the outer cover, which is in contact with the placement surface. A furnace body support is rotatably mounted on the furnace body base. A furnace body is rotatably mounted between the furnace body base and the furnace body support. The furnace body base, the furnace body support, and the furnace body form a rotary furnace.

[0020] Preferably, one end of the connecting pipe passes through the outer cover and extends to its top, and the connecting pipe located on the outside is fixedly connected to a through pipe, which is used for guiding the exhaust gas.

[0021] Preferably, an adsorption tube is fixedly installed on the tube, the adsorption tube has a depression in the middle, and an energized coil is wound around the depression of the adsorption tube. Both ends of the energized coil fall to the ground and are connected to the battery. The adsorption tube and the energized coil form an electromagnet for adsorbing and collecting metals in the waste gas.

[0022] An in-furnace aluminum ash treatment device and its operating method, comprising the following steps:

[0023] Step 1: When the staff puts the materials into the furnace, the recovery chamber works normally to recover the waste gas;

[0024] Step 2: When the furnace starts to operate, the operator can first turn on the electric heating plate to heat the surface of the second nitrogen gas bag, causing the second nitrogen gas bag to expand and squeeze the mounting base plate, which in turn puts pressure on the support roller, causing the connecting rod to push the lifting cover and rotate. Then the support roller can separate from the support groove, releasing the limit on the lifting cover.

[0025] Step 3: When the exhaust gas passes through the connecting pipe, it will raise the temperature of the connecting pipe surface. When the temperature around the connecting pipe rises, it will be transferred from the isolation tank to the hollow tank. At this time, the gas stored in the first nitrogen gas bag inside the hollow tank will expand. At this time, the first nitrogen gas bag will extend downward and push the pressure bottom ring, causing the pressure bottom ring and the bent ring plate to move downward. At the same time, the lifting hood will lose the support of the bent ring plate and thus can descend together with the bent ring plate.

[0026] Step 4: After the operator shuts down the furnace, the first nitrogen gas tank loses its driving force. At this time, the spring can pull the pressure bottom ring and the bent annular plate to reset so that it can be used again.

[0027] This invention has at least the following beneficial effects:

[0028] 1. When the temperature of the connecting pipe rises, it will transfer heat to the isolation barrel and the hollow barrel. At this time, the first nitrogen gas bag set inside the hollow barrel will expand due to heat, which will push the pressure bottom ring in contact with it, thereby causing the pressure bottom ring to move downward. When the pressure bottom ring moves, the lifting hood and the bent ring plate will move accordingly. At this time, during the descent of the lifting hood, the space covered by the waste gas recovery chamber will gradually decrease, thereby further improving the waste gas recovery effect of the waste gas recovery chamber.

[0029] 2. The connection between the support roller and the support groove can lift both sides of the lifting cover, preventing the lifting cover from moving downwards without being driven. The support roller is connected to the mounting base plate through the connecting rod, and the rotation node between the connecting rod and the mounting base plate is equipped with a return spring. Therefore, the slope support of the connecting rod can be guaranteed, thereby achieving the function of lifting the lifting cover.

[0030] 3. The electric heating plate directly heats the second nitrogen gas tank, causing it to expand. As the second nitrogen gas tank expands, it compresses the mounting base plate, causing the mounting base plate to press downwards on the support roller via the connecting rod. At this time, the rotating joint between the connecting rod and the mounting base plate will rotate under pressure, causing the support roller to gradually separate from the support groove. During this process, the lifting hood will continue to descend under the action of the first nitrogen gas tank. Due to the height difference, the support roller and the support groove will completely separate, so that the support roller no longer supports the lifting hood.

[0031] 4. When the pressure-bearing bottom ring descends, it will pull the spring fixedly connected to the mounting groove to extend, thereby storing force for the spring. When the first nitrogen gas tank no longer applies pressure to the pressure-bearing bottom ring, the spring will pull the pressure-bearing bottom ring back to its original position through its own characteristics, so that the lifting cover can return to the inside of the top cover. Attached Figure Description

[0032] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0033] Figure 1 Overall diagram provided for this invention;

[0034] Figure 2 Overall bottom view provided for this invention;

[0035] Figure 3 A perspective view of the rotary kiln provided for this invention;

[0036] Figure 4 This is a diagram showing the separation of the top cover and the lifting cover provided by the present invention;

[0037] Figure 5The top cover and the lifting cover provided by the present application are provided with a split view;

[0038] Figure 6 The mounting base and the electric heating plate provided by the present application are provided with a split view;

[0039] Figure 7 The isolation barrel and the communication pipe provided by the present application are provided with a split view;

[0040] Figure 8 The through pipe, the adsorption pipe and the power coil provided by the present application are provided with a split view.

[0041] In the figure, 1, the outer cover; 2, the top cover; 3, the through pipe; 4, the adsorption pipe; 401, the power coil; 5, the furnace body; 501, the furnace body base; 502, the furnace body support; 6, the lifting cover; 601, the bearing groove; 602, the through groove; 7, the pressure receiving bottom ring; 701, the mounting groove; 8, the bent annular plate; 801, the lock seat; 802, the fastening screw; 9, the hollow barrel; 901, the first nitrogen gas pocket; 10, the isolation barrel; 11, the communication pipe; 12, the spring; 121, the fixed seat; 13, the bearing wheel; 131, the connecting rotating rod; 132, the mounting base; 133, the electric heating plate; 134, the second nitrogen gas pocket. DETAILED DESCRIPTION

[0042] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and examples, so that the realization process of how the present application applies technical means to solve technical problems and achieves technical effects can be fully understood and implemented.

[0043] As Figures 1-8As shown, the furnace aluminum ash treatment device provided by the embodiment includes an outer cover 1, a top cover 2 fixedly arranged at the upper end of the outer cover 1, and a waste gas recovery bin formed by the outer cover 1 and the top cover 2. The waste gas recovery bin is used to recover the waste gas generated by the furnace body 5, thereby improving the ambient environmental quality. A communication pipe 11 is fixedly arranged at the inner top end of the top cover 2. An isolation barrel 10 is arranged at the outer side of the communication pipe 11 and is also fixedly connected with the top end of the top cover 2. A hollow barrel 9 is sleeved at the outer side of the isolation barrel 10 and is fixed at the top end of the top cover 2. A bending type annular plate 8 is arranged at the outer side of the hollow barrel 9. A lifting cover 6 is arranged at the inner side of the outer cover 1 and is used to reduce the waste gas collection area. A through slot 602 is formed at the top end of the lifting cover 6 and is slidably connected with the hollow barrel 9. The bending type annular plate 8 abuts against the inner top end of the lifting cover 6 and is located below the through slot 602. A pressure bottom ring 7 is arranged at one end of the bending type annular plate 8. A first nitrogen gas pocket 901 is wrapped in the hollow barrel 9. The lower side of the hollow barrel 9 and the first nitrogen gas pocket 901 are in contact with the upper side of the pressure bottom ring 7. When the high-temperature waste gas passes through the communication pipe 11, the temperature of the surface of the communication pipe 11 is heated. When the temperature of the communication pipe 11 is increased, the heat is transferred to the isolation barrel 10 and the hollow barrel 9. At this time, the first nitrogen gas pocket 901 arranged in the hollow barrel 9 is heated and expanded, and the pressure bottom ring 7 in contact with the first nitrogen gas pocket 901 is pushed to move downward, so that the pressure bottom ring 7 is moved downward. When the pressure bottom ring 7 moves, the lifting cover 6 and the bending type annular plate 8 move. At this time, the lifting cover 6 gradually reduces the space covered by the waste gas recovery bin during the descending process, thereby further improving the waste gas recovery effect of the waste gas recovery bin.

[0044] The structure only realizes the descending of the lifting cover 6 by changing the heat, so as to reduce the waste gas collection area. The structure does not set any electrically driven facilities and only relies on the high temperature of the waste gas to realize the above effect, thereby reducing the use cost and reusing the high temperature of the waste gas.

[0045] The inner walls of the top cover 2 are provided with supporting wheels 13 for limiting and assisting the lifting cover 6. The lifting cover 6 is provided with supporting grooves 601 at the opposite sides. The number of the supporting grooves 601 on each side is two. Each supporting wheel 13 is rollingly arranged in the supporting groove 601. The connection between the supporting wheel 13 and the supporting groove 601 can lift the two sides of the lifting cover 6, so as to avoid the downward movement of the lifting cover 6 without driving.

[0046] Wherein, each supporting wheel 13 is rotatably connected with a mounting bottom plate 132 through a connecting rotating rod 131 at both ends, a reset spring is arranged at the rotating connection point between the connecting rotating rod 131 and the mounting bottom plate 132, the reset spring is used for supporting the slope of the connecting rotating rod 131, the inner wall of the top cover 2 is fixedly provided with an electric heating plate 133 at opposite sides, the electric heating plate 133 is same in number and position with the mounting bottom plate 132, and a second nitrogen gas pocket 134 is fixedly arranged between the electric heating plate 133 and the mounting bottom plate 132, the supporting wheel 13 is connected with the mounting bottom plate 132 through the connecting rotating rod 131, and a reset spring is arranged at the rotating joint between the connecting rotating rod 131 and the mounting bottom plate 132, so that the slope support of the connecting rotating rod 131 is guaranteed, and the above-mentioned supporting effect of the lifting cover 6 is achieved;

[0047] In order to separate the supporting groove 601 from the supporting wheel 13, the staff can manually open the electric heating plate 133 through the switch, the electric heating plate 133 directly heats the second nitrogen gas pocket 134, so as to promote the expansion of the second nitrogen gas pocket 134, when the second nitrogen gas pocket 134 expands, the mounting bottom plate 132 is extruded, the mounting bottom plate 132 extrudes the supporting wheel 13 downward through the connecting rotating rod 131, at this time, the rotating joint of the connecting rotating rod 131 and the mounting bottom plate 132 is pressed to rotate, so that the supporting wheel 13 and the supporting groove 601 are gradually separated, in this process, the lifting cover 6 is continuously lowered under the action of the first nitrogen gas pocket 901, due to the height difference, the supporting wheel 13 and the supporting groove 601 are completely separated, so that the supporting wheel 13 no longer supports the lifting cover 6;

[0048] When the electric heating plate 133 stops heating, the reset spring automatically resets the connecting rotating rod 131 to the original angle, so that the supporting wheel 13 can still be connected with the supporting groove 601 after the lifting cover 6 is reset, and the above-mentioned supporting effect is achieved again;

[0049] It should be noted that the reset of the mounting bottom plate 132 is not the power reset itself, but is reset by the lifting cover 6 after reset, and the connection mode between the mounting bottom plate 132 and the electric heating plate 133 is sliding connection through the connecting columns arranged at the four corners.

[0050] Further, the communication pipe 11 is fixedly provided with a plurality of fixed seats 121 on the side, and the lower side of each fixed seat 121 is fixedly provided with a spring 12, and the other end of each spring 12 is connected with the pressure receiving bottom ring 7, wherein a plurality of installation grooves 701 are formed on the pressure receiving bottom ring 7, and the number and position of the installation grooves 701 are the same as those of the springs 12, and one end of the spring 12 is fixedly connected with the installation groove 701, and when the pressure receiving bottom ring 7 descends, the spring 12 fixedly connected with the installation groove 701 is pulled to extend, so as to store power for the spring 12, and when the first nitrogen gas bag 901 no longer applies pressure to the pressure receiving bottom ring 7, the spring 12 pulls the pressure receiving bottom ring 7 to reset through its own characteristics, so that the lifting cover 6 can be reset to the inside of the top cover 2.

[0051] In order to ensure that the first nitrogen gas bag 901 does not expand laterally during the expansion process, the isolation barrel 10 can be set to be telescopic, and the end away from the top cover 2 is in contact with the upper side of the pressure receiving bottom ring 7, so that during the descending process of the pressure receiving bottom ring 7, the isolation barrel 10 can expand and expand, and at the same time, the bent annular plate 8 also descends with the pressure receiving bottom ring 7, so as to prevent the lateral expansion of the first nitrogen gas bag 901.

[0052] In order to enable the spring 12 to support the reset of the lifting cover 6 and a plurality of components, the number of springs 12 can be increased, or the strength of the spring 12 can be improved, and the specific strength or number needs to be determined according to the material of the lifting cover 6 and the components in contact with the pressure receiving bottom ring 7.

[0053] The communication pipe 11 and the isolation barrel 10 have a gap therebetween, wherein the material of the isolation barrel 10 is metal, so as to increase the heat conduction effect, and the spring 12 and the fixed seat 121 can be located between the communication pipe 11 and the isolation barrel 10, so as to avoid the contact between the first nitrogen gas bag 901 and the spring 12 during the expansion process.

[0054] In order to enable the bent annular plate 8 to be wrapped and fixed, a plurality of opposite lock seats 801 are fixedly arranged at the two ends of the bent annular plate 8, and each two lock seats 801 form a group, and each group of lock seats 801 is fixedly screwed by a fastening screw 802, and the lock seat 801 is used for sleeving and locking the bent annular plate 8, and when the bent annular plate 8 wraps the first nitrogen gas bag 901, the installer can install the fastening screw 802 on the two lock seats 801, so that the two lock seats 801 can be connected and fixed, so as to facilitate the disassembly of the bent annular plate 8 in the later period, so as to facilitate the detection of the hollow barrel 9 and the first nitrogen gas bag 901 by the maintenance personnel.

[0055] Further, as shown in FIG. 8, the communication pipe 11 is fixedly provided with a plurality of fixed seats 121 on the side, and the lower side of each fixed seat 121 is fixedly provided with a spring 12, and the other end of each spring 12 is connected with the pressure receiving bottom ring 7, wherein a plurality of installation grooves 701 are formed on the pressure receiving bottom ring 7, and the number and position of the installation grooves 701 are the same as those of the springs 12, and one end of the spring 12 is fixedly connected with the installation groove 701, and when the pressure receiving bottom ring 7 descends, the spring 12 fixedly connected with the installation groove 701 is pulled to extend, so as to store power for the spring 12, and when the first nitrogen gas bag 901 no longer applies pressure to the pressure receiving bottom ring 7, the spring 12 pulls the pressure receiving bottom ring 7 to reset through its own characteristics, so that the lifting cover 6 can be reset to the inside of the top cover 2. Figures 1-3As shown, the inner side of the cover 1 is provided with a furnace body base 501 in contact with the placement surface, the furnace body base 501 is rotatably provided with a furnace body support 502, and the furnace body base 501 and the furnace body support 502 are rotatably provided with the furnace body 5. The furnace body base 501, the furnace body support 502 and the furnace body 5 form a rotary furnace, and the furnace body base 501 and the furnace body support 502 can provide limiting support for the furnace body 5, and the furnace body 5 can also roll with the rolling shaft on the furnace body base 501.

[0056] Further, as shown in Figure 1 , Figure 8 As shown, one end of the communication pipe 11 penetrates through the cover 1 and extends to the top thereof, and the communication pipe 11 located outside is fixedly connected with a pipe 3, the pipe 3 is used for guiding the flow of waste gas, and the pipe 3 is fixedly provided with an adsorption pipe 4, the middle part of the adsorption pipe 4 is recessed, and the adsorption pipe 4 is wound with a power coil 401, and the two ends of the power coil 401 fall to the ground and are connected with a battery. The adsorption pipe 4 and the power coil 401 form an electromagnet for adsorbing and collecting metal in the waste gas. The waste gas generated by the furnace body 5 flows through the communication pipe 11 and the pipe 3 to a bag-type dust collector or other recycling equipment. When the waste gas passes through the adsorption pipe 4, the iron filings contained therein are adsorbed. When the current batch of material processing is completed, the worker can manually turn off the power supply so that the power supply will not continue to supply power to the power coil 401. At this time, the inner wall of the adsorption pipe 4 does not have magnetism, which can make the iron filings attached to the inner wall fall off. At the same time, the worker connects the outlet of the pipe 3 with a collection device, so that the iron filings contained in the waste gas can be collected and mixed with the next batch of materials for processing, thereby reducing the damage of the materials.

[0057] As shown in Figures 1-8 The operation method of the aluminum ash treatment device in the furnace provided by the embodiment includes the following steps:

[0058] Step one: when the worker puts the material into the inside of the furnace body 5, the recycling bin normally works to recycle the waste gas;

[0059] Step two: when the furnace body 5 starts to work, the worker can first turn on the electric heating plate 133 to heat the surface of the second nitrogen gas pack 134, so that the second nitrogen gas pack 134 expands to press the mounting plate 132, so that the mounting plate 132 presses the supporting wheel 13, so as to drive the connecting rotating rod 131 to drive the lifting cover 6 and rotate, and then the supporting wheel 13 can be separated from the supporting groove 601 to release the limiting of the lifting cover 6;

[0060] Step three: when the exhaust gas passes through the communication pipe 11, the temperature of the surface of the communication pipe 11 is raised, and when the temperature around the communication pipe 11 is raised, the heat is transferred from the isolation barrel 10 to the hollow barrel 9, at this time, the gas stored in the first nitrogen gas pocket 901 in the hollow barrel 9 is expanded, at this time, the first nitrogen gas pocket 901 extends downward to push the pressure bottom ring 7, so that the pressure bottom ring 7 and the bent annular plate 8 move downward, at the same time, the lifting cover 6 loses the support of the bent annular plate 8 and thus can descend together with the bent annular plate 8;

[0061] Step four: when the staff member closes the furnace body 5, the first nitrogen gas pocket 901 loses the driving force, at this time, the spring 12 can pull the pressure bottom ring 7 and the bent annular plate 8 to reset for reuse.

[0062] As used in the specification and claims, certain terminology is used to describe parts that will be apparent to those skilled in the art. It is not intended that the specification and claims be limited to the described embodiments, but rather that the scope of the invention be defined by the appended claims. As used in the specification and claims, the singular forms "a," "an" and "the" include plural references unless the context clearly dictates otherwise. "Approximately" refers to a range of acceptable error for the technical field based on the functionality of the subject matter at issue. As used in the specification and claims, the term "comprising" and its corresponding meaning "comprise" are not intended to exclude the presence of other elements or steps. As used in the specification and claims, the term "consisting essentially of" and its corresponding meaning "consist essentially of" excludes other elements or steps not recited in the claim.

[0063] It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. "Approximately" refers to a range of acceptable error for the technical field based on the functionality of the subject matter at issue. As used in the specification and claims, the term "comprising" and its corresponding meaning "comprise" are not intended to exclude the presence of other elements or steps. As used in the specification and claims, the term "consisting essentially of" and its corresponding meaning "consist essentially of" excludes other elements or steps not recited in the claim.

[0064] The foregoing description illustrates and describes the only preferred embodiments of the present invention. However, it is to be understood that the invention is not limited to the disclosed embodiments, and that other embodiments can be used, and modifications and variations can be made without departing from the scope of the present invention. Accordingly, it should be understood that the application is not to be limited by what has been particularly shown and described, and that changes in form and substitutions of equivalents can be made without departing from the spirit and scope of the present application. Changes and modifications can be made to the application in light of the above teachings. It is therefore intended to cover in the appended claims all such changes and modifications that fall within the scope of the present application.

Claims

1. An in-furnace aluminum ash treatment device, comprising an outer cover (1) and a top cover (2) fixedly disposed on the upper end of the outer cover (1), wherein the outer cover (1) and the top cover (2) form a waste gas recovery chamber, characterized in that: A connecting pipe (11) is fixedly installed at the top inner side of the top cover (2). An isolation bucket (10) is also fixedly connected to the top of the top cover (2) on the outside of the connecting pipe (11). A hollow bucket (9) is sleeved on the outside of the isolation bucket (10). The upper end of the hollow bucket (9) is fixedly connected to the top of the top cover (2). A bent annular plate (8) is installed on the outside of the hollow bucket (9). The outer cover (1) is provided with a lifting cover (6) inside. The lifting cover (6) is used to reduce the waste gas collection area. The top of the lifting cover (6) is provided with a through groove (602) that is slidably connected to the hollow barrel (9). The bent annular plate (8) abuts against the top of the inner side of the lifting cover (6). The bent annular plate (8) is located below the through groove (602). One end of the bent annular plate (8) is provided with a pressure-bearing bottom ring (7). The hollow barrel (9) contains a first nitrogen gas bag (901), and the lower sides of both the hollow barrel (9) and the first nitrogen gas bag (901) are in contact with the upper side of the pressure-bearing bottom ring (7). The inner wall of the top cover (2) is provided with support wheels (13) on both sides, and the support wheels (13) are used for limiting the lifting cover (6).

2. The furnace-mounted aluminum ash treatment device according to claim 1, characterized in that: The connecting pipe (11) is fixedly provided with several fixed seats (121) on its periphery. Each fixed seat (121) is fixedly provided with a spring (12) on its lower side. The other end of each spring (12) is connected to the pressure bottom ring (7). The pressure-bearing bottom ring (7) has multiple mounting slots (701) with the same number and position as the spring (12), and one end of the spring (12) is fixedly connected to the mounting slot (701).

3. The furnace-mounted aluminum ash treatment device according to claim 2, characterized in that: There is a gap between the connecting pipe (11) and the isolation bucket (10); The isolation barrel (10) is made of metal to increase the heat conduction effect.

4. The furnace-mounted aluminum ash treatment device according to claim 3, characterized in that: Multiple locking seats (801) are fixedly provided at both ends of the bent annular plate (8). Each pair of locking seats (801) forms a group. Each group of locking seats (801) is fixed by fastening screws (802). The locking seats (801) are used for locking the bent annular plate (8).

5. The furnace-in-furnace aluminum ash treatment device according to claim 4, characterized in that: The lifting cover (6) has support grooves (601) on both sides, with two support grooves (601) on each side, and each support wheel (13) is rolled inside the support groove (601); Each of the supporting wheels (13) is rotatably connected to a mounting base plate (132) at both ends via a connecting rod (131). A return spring is provided at the rotatable connection point between the connecting rod (131) and the mounting base plate (132). The return spring is used for the inclined support of the connecting rod (131).

6. The furnace-mounted aluminum ash treatment device according to claim 5, characterized in that: Electric heating plates (133) are fixedly installed on both sides of the inner wall of the top cover (2). The number and position of the electric heating plates (133) are the same as those of the mounting base plate (132). A second nitrogen gas bag (134) is fixedly installed between the electric heating plates (133) and the mounting base plate (132).

7. The furnace-in-furnace aluminum ash treatment device according to claim 6, characterized in that: The inner side of the outer cover (1) is provided with a furnace body base (501) that contacts the placement surface. A furnace body support (502) is rotatably arranged on the furnace body base (501). A furnace body (5) is rotatably arranged between the furnace body base (501) and the furnace body support (502). The furnace body base (501), the furnace body support (502) and the furnace body (5) form a rotary kiln.

8. The furnace-in-furnace aluminum ash treatment device according to claim 7, characterized in that: One end of the connecting pipe (11) passes through the outer cover (1) and extends to its top. The connecting pipe (11) located on the outside is fixedly connected to a through pipe (3), which is used to guide the exhaust gas.

9. The furnace-in-furnace aluminum ash treatment device according to claim 8, characterized in that: An adsorption tube (4) is fixedly installed on the tube (3). The adsorption tube (4) has a depression in the middle. An electric coil (401) is wound around the depression of the adsorption tube (4). The adsorption tube (4) and the electric coil (401) form an electromagnet for adsorbing and collecting metals in the waste gas.

10. An operating method for an in-furnace aluminum ash treatment device, characterized in that, The furnace ash treatment device according to claim 9 includes the following steps: Step 1: When the staff put the materials into the furnace body (5), the recovery chamber works normally to recover the waste gas; Step 2: When the furnace body (5) starts to operate, the staff can first turn on the electric heating plate (133) to heat the surface of the second nitrogen gas bag (134), so that the second nitrogen gas bag (134) expands and squeezes the mounting base plate (132), so that the mounting base plate (132) puts pressure on the support roller (13), causing the connecting rod (131) to push the lifting cover (6) and rotate, and then the support roller (13) can separate from the support groove (601) and release the limit on the lifting cover (6); Step 3: When the exhaust gas passes through the connecting pipe (11), the temperature of the surface of the connecting pipe (11) will increase. When the temperature around the connecting pipe (11) increases, it will be transferred from the isolation tank (10) to the hollow tank (9). At this time, the gas stored in the first nitrogen gas bag (901) inside the hollow tank (9) will expand. At this time, the first nitrogen gas bag (901) will extend downward and push the pressure bottom ring (7), causing the pressure bottom ring (7) and the bent ring plate (8) to move downward. At the same time, the lifting cover (6) will lose the support of the bent ring plate (8) and thus can descend together with the bent ring plate (8). Step 4: When the operator closes the furnace body (5), the first nitrogen gas tank (901) loses its driving force. At this time, the spring (12) can pull the pressure bottom ring (7) and the bent ring plate (8) to reset so that it can be used again.

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