Heat storage tank for recycling waste heat of flue gas of smelting furnace

Abstract

The utility model relates to the field of industrial production equipment, in particular to a smelting furnace flue gas waste heat recycling heat storage box which comprises a heat storage box body used for recycling smelting furnace flue gas, a gas inlet pipe and a gas outlet pipe are fixedly arranged on the symmetrical side faces of the heat storage box body, and a first installation frame and a second installation frame are arranged in the heat storage box body in a sliding mode. The first installation frame and the second installation frame are arranged in parallel, the first installation frame is located on the left side of the second installation frame, a first filter screen is movably installed in the first installation frame, a second filter screen is movably installed in the second installation frame, and the diameter of filter holes of the second filter screen is smaller than that of filter holes of the first filter screen. The heat storage box further comprises an anti-blocking mechanism and a dismounting and mounting mechanism for quickly and fixedly mounting the first mounting frame and the second mounting frame in the heat storage box body, the anti-blocking mechanism drives a rotating shaft through a rotating motor and drives a cam to rotate, so that a first filter screen and a second filter screen vibrate up and down, and the problem of blocking caused by excessive dust attached to the surface of a filter plate is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial production equipment, in particular to a heat storage box for recycling the residual temperature of the flue gas of a smelting furnace. Background Technique

[0002] As a key equipment in the metal smelting industry, the smelting furnace is widely used in the smelting and temperature raising processes of carbon metals, alloys and special metals. However, during the smelting process, the flue gas discharged from the smelting furnace not only carries a large amount of heat energy, but also may cause certain pollution to the environment.

[0003] Chinese Patent CN217236484U discloses an efficient heat storage flue gas waste heat recovery and utilization device for industrial furnaces. The flue gas can be recovered, so that the heat in the flue gas can be reused. Since the calorific value of medium and high calorific value high-quality fuel is very high, the amount of combustion-supporting air required per unit volume of fuel is large. After the high-temperature flue gas leaving the furnace meets the single heat storage requirement of air, there is still remaining flue gas. This part of the remaining flue gas is recovered through the recovery box, and then the flue gas is filtered and recycled, and the high-temperature flue gas is no longer directly discharged, and the heat in the high-temperature flue gas can be effectively utilized.

[0004] However, the filter plate is fixedly installed in the recovery box. When the filter plate in the recovery box filters the flue gas, too much dust may adhere to the surface of the filter plate, resulting in blockage. At the same time, in this efficient heat storage flue gas waste heat recovery and utilization device for industrial furnaces, the filter plate is not easy to disassemble, so the filter plate cannot be cleaned or replaced in time.

[0005] Based on this, a heat storage box for recycling the residual temperature of the flue gas of a smelting furnace is now provided, which can eliminate the disadvantages of the existing device. Content of the Utility Model

[0006] Aiming at the above problems, a heat storage box for recycling the residual temperature of the flue gas of a smelting furnace is provided. By setting an anti-blocking mechanism, the rotating motor drives the rotating shaft to drive the cam to rotate, so that the first filter screen and the second filter screen vibrate up and down, thereby preventing blockage, and solving the problem of blockage caused by too much dust adhering to the surface of the filter plate in the background technique.

[0007] To solve the problems of the existing technology, the utility model provides the following technical solutions:

[0008] A heat storage box for recycling the residual temperature of the flue gas of a smelting furnace, comprising a heat storage box body for recycling the flue gas of the smelting furnace. The inlet pipe and the outlet pipe are fixedly arranged on the symmetrical sides of the heat storage box body. A first installation frame and a second installation frame are slidably arranged in the heat storage box body, and one side of the first installation frame and the second installation frame penetrates through the heat storage box body. The first installation frame and the second installation frame are arranged in parallel, and the first installation frame is located on the left side of the second installation frame. A first filter screen is movably installed in the first installation frame, and a second filter screen is movably installed in the second installation frame. The diameter of the filter holes of the second filter screen is smaller than that of the first filter screen. The heat storage box body is also provided with an anti-blocking mechanism for driving the second filter screen and the first filter screen to move back and forth up and down in the first installation frame and the second installation frame respectively to prevent blockage, and the heat storage box body is provided with a disassembly and assembly mechanism for quickly fixing and installing the first installation frame and the second installation frame in the heat storage box body.

[0009] Preferably, the disassembly and assembly mechanism includes a second installation groove, a sliding plate, a sliding rod, a spring and a fixing rod;

[0010] The second installation groove is opened on the heat storage box body and is located on the central axis of the first installation frame and the second installation frame;

[0011] Two sliding plates are symmetrically arranged along the axis of the second installation groove. The sliding plates are slidably arranged in the second installation groove, and sliding grooves for the sliding plates to slide are symmetrically opened on both side walls of the second installation groove;

[0012] A plurality of groups of sliding rods are provided, and both ends of the sliding rods are fixedly arranged on the inner wall of the second installation groove. The sliding plates slide through the sliding rods;

[0013] The spring is sleeved on the sliding rod, and both ends of the spring are respectively abutted against the sides of the two sliding plates;

[0014] The fixing rods are fixedly installed on the sides of the sliding plates respectively close to the first installation frame and the second installation frame, and fixing holes for cooperating with the fixing rods are opened on both the first installation frame and the second installation frame.

[0015] Preferably, the disassembly and assembly mechanism further includes second buffer rods. There are two groups of second buffer rods, and the two groups of second buffer rods are respectively abutted against the side walls of the first installation frame and the second installation frame. One end of the second buffer rod is fixedly installed on the inner side wall of the heat storage box body, and the other end of the second buffer rod is fixedly installed with a second buffer plate, and the second buffer plate is abutted against the side walls of the first installation frame and the second installation frame.

[0016] Preferably, the anti-blocking mechanism includes a rotating shaft, a cam, a first installation groove and a first buffer plate;

[0017] There are two rotating shafts, which correspond to the first mounting frame and the second mounting frame one by one. One end of the rotating shaft is rotatably connected to the side wall of the heat storage tank body, and the other end of the rotating shaft rotatably penetrates through the side wall of the heat storage tank body. The two rotating shafts are connected by a transmission belt;

[0018] A plurality of cams are sleeved on each of the rotating shafts, and the cams are in contact with the surfaces of the first filter screen and the second filter screen;

[0019] The first mounting grooves are symmetrically opened on the first mounting frame and the second mounting frame, and a plurality of first buffer rods are fixedly installed in the first mounting grooves;

[0020] The first buffer plate is fixedly installed at one end of the first buffer rod and is in contact with the bottom surfaces of the first filter screen and the second filter screen.

[0021] Preferably, the cross-section of the fixing rod is trapezoidal with a smaller front end and a larger rear end.

[0022] Preferably, a rotating motor is fixedly installed on the side surface of the heat storage tank body. The output shaft of the rotating motor is connected to the rotating shaft by a transmission belt. A driving bevel gear is provided at the output end of the rotating motor. A mounting plate is fixedly installed on the inner wall of the heat storage tank body. A driven bevel gear is rotatably provided on the mounting plate. The driving bevel gear is engaged with the driven bevel gear. An impeller fan is fixedly sleeved on the driven bevel gear.

[0023] Preferably, heating tubes are fixedly provided on the two inner side walls of the heat storage tank body behind the second filter screen.

[0024] Preferably, handles are fixedly provided on the first mounting frame and the second mounting frame.

[0025] Preferably, the...

[0026] The beneficial effects of the present utility model compared with the prior art are:

[0027] 1. The utility model provides an anti-blocking mechanism, which drives the rotating shaft to rotate, thereby causing the transmission belt on the rotating shaft to rotate. When the long side of the transmission belt conflicts with the surfaces of the first filter screen and the second filter screen, the first filter screen and the second filter screen are squeezed, so that the first filter screen and the second filter screen move downward in the first installation frame and the second installation frame. When the short side of the transmission belt conflicts with the surfaces of the first filter screen and the second filter screen, under the action of the first buffer rod, the first buffer plate pushes the first filter screen and the second filter screen to move upward, and the first filter screen and the second filter screen vibrate up and down in this way, thereby preventing the first filter screen and the second filter screen from being blocked. The smoke passes through the first filter screen and the second filter screen to remove impurities therein, and is discharged from the heat storage box body through the exhaust pipe for recycling. At the same time, the provision of the heating pipe can slow down the reduction of the smoke temperature in the heat storage box body and improve the utilization rate of the smoke.

[0028] 2. The utility model provides a disassembly and assembly mechanism. During installation, the first filter screen and the second filter screen are slidably installed into the heat storage tank body through the first installation frame and the second installation frame, and the sliding plate slides on the sliding rod. The elastic force of the spring is used to push the two sliding plates away from each other, so that the fixing rod is pushed into the fixing holes on the first installation frame and the second installation frame, so as to realize the rapid fixation of the first filter screen and the second filter screen; when disassembly is required, it is only necessary to pull open the sliding rod so that the fixing rod is separated from the limitation of the fixing hole, and the first installation frame and the second installation frame can be pushed to slide out of the heat storage tank body under the action of the second buffer rod and the second buffer plate, so as to achieve the effect of facilitating the disassembly of the first filter screen and the second filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A three-dimensional schematic diagram of a heat storage box for recycling residual heat from smelting furnace flue gas Figure 1 ;

[0030] Figure 2 A three-dimensional schematic diagram of a heat storage box for recycling residual heat from smelting furnace flue gas Figure 2 ;

[0031] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of a heat storage box for recycling the residual heat of smelting furnace flue gas;

[0032] Figure 4 It is a plan view of a heat storage box for recycling the residual heat of the flue gas of a smelting furnace;

[0033] Figure 5 It is a cross-sectional view of a heat storage box for recycling the residual heat of smelting furnace flue gas;

[0034] Figure 6 It is a three-dimensional structural schematic diagram of a heat storage box anti-blocking mechanism for recycling residual heat of smelting furnace flue gas;

[0035] Figure 7 It is a schematic cross-sectional three-dimensional structure diagram of an anti-blocking mechanism for heat storage box in the recovery and utilization of the residual temperature of the flue gas of a smelting furnace;

[0036] Figure 8 It is a three-dimensional structure schematic diagram of a heat storage box for the recovery and utilization of the residual temperature of the flue gas of a smelting furnace Figure 3 ;

[0037] Figure 9 It is Figure 8 An enlarged view of the structure at position C in

[0038] Figure 10 It is Figure 5 An enlarged view of the structure at position B in

[0039] Annotation of reference numerals: 100, heat storage box body; 101, intake pipe; 102, outlet pipe; 103, first mounting frame; 104, second mounting frame; 105, rotating motor; 106, driving bevel gear; 107, driven bevel gear; 108, mounting plate; 109, impeller fan; 110, first filter screen; 111, second filter screen; 112, heating pipe; 113, handle; 200, anti-blocking mechanism; 201, rotating shaft; 202, transmission belt; 203, cam; 204, first mounting groove; 205, first buffer rod; 206, first buffer plate; 300, disassembly and assembly mechanism; 301, second buffer rod; 302, second buffer plate; 303, second mounting groove; 304, sliding groove; 305, sliding plate; 306, sliding rod; 307, spring; 308, fixed rod; 309, fixing hole. Detailed implementation manners

[0040] In order to further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners.

[0041] Refer to Figures 1 - 10As shown in the figure, a heat storage box for recovering the residual temperature of the flue gas of a smelting furnace includes a heat storage box body 100 for recovering the flue gas of the smelting furnace. An air inlet pipe 101 and an air outlet pipe 102 are fixedly arranged on the symmetrical sides of the heat storage box body 100. A first installation frame 103 and a second installation frame 104 are slidably arranged in the heat storage box body 100, and one side surfaces of the first installation frame 103 and the second installation frame 104 penetrate through the heat storage box body 100. The first installation frame 103 and the second installation frame 104 are arranged in parallel, and the first installation frame 103 is located on the left side of the second installation frame 104. A first filter screen 110 is movably installed in the first installation frame 103, and a second filter screen 111 is movably installed in the second installation frame 104. The diameter of the filtering holes of the second filter screen 111 is smaller than that of the filtering holes of the first filter screen 110. A blockage prevention mechanism 200 is also arranged on the heat storage box body 100 for driving the second filter screen 111 and the first filter screen 110 to move up and down back and forth in the first installation frame 103 and the second installation frame 104 respectively to prevent blockage. A disassembly and assembly mechanism 300 is arranged on the heat storage box body 100 for quickly fixing and installing the first installation frame 103 and the second installation frame 104 in the heat storage box body 100.

[0042] During use, the heat storage box body 100 is installed on the smelting furnace. The flue gas discharged from the smelting furnace is received through the air inlet pipe 101, and the first filter screen 110 and the second filter screen 111 in the first installation frame 103 and the second installation frame 104 are used to filter the flue gas. Since the diameter of the filtering holes of the second filter screen 111 is smaller than that of the first filter screen 110, multi-stage filtering can be realized, and the filtering effect can be improved. At the same time, through the blockage prevention mechanism 200 and the disassembly and assembly mechanism 300, the problems of filter screen blockage and quick replacement of the filter screen can be solved respectively. The filtered flue gas is discharged through the air outlet pipe 102 for recycling.

[0043] See Figures 8 - 10As shown in the figure, the disassembly and assembly mechanism 300 includes a second installation groove 303, a sliding plate 305, a sliding rod 306, a spring 307, and a fixing rod 308. The second installation groove 303 is opened on the heat storage box body 100 and is located on the central axis of the first installation frame 103 and the second installation frame 104. Two sliding plates 305 are symmetrically arranged along the axis of the second installation groove 303. The sliding plates 305 are slidably arranged in the second installation groove 303. Two sliding grooves 304 for the sliding of the sliding plates 305 are symmetrically opened on both side walls of the second installation groove 303. A plurality of groups of sliding rods 306 are provided, and both ends of the sliding rods 306 are fixedly arranged on the inner wall of the second installation groove 303. The sliding plates 305 slidably penetrate through the sliding rods 306. The spring 307 is sleeved on the sliding rods 306, and both ends of the spring 307 are respectively abutted against the sides of the two sliding plates 305. The fixing rods 308 are fixedly installed on the sides of the sliding plates 305 respectively close to one side of the first installation frame 103 and the second installation frame 104. Fixing holes 309 for cooperating with the fixing rods 308 are opened on both the first installation frame 103 and the second installation frame 104.

[0044] During installation, the first filter screen 110 and the second filter screen 111 are slidably installed into the heat storage box body 100 through the first installation frame 103 and the second installation frame 104. By sliding the sliding plates 305 on the sliding rods 306 and using the elastic force of the spring 307 to push the two sliding plates 305 away from each other, the fixing rods 308 are pushed into the fixing holes 309 on the first installation frame 103 and the second installation frame 104, realizing the quick fixation of the first filter screen 110 and the second filter screen 111. When disassembly is required, only need to pull the sliding rods 306, so that the fixing rods 308 are disengaged from the limitation of the fixing holes 309, and the fixation can be released.

[0045] See Figures 8 - 10 As shown in the figure, the disassembly and assembly mechanism 300 further includes two groups of second buffer rods 301. The two groups of second buffer rods 301 are respectively abutted against the side walls of the first installation frame 103 and the second installation frame 104. One end of each second buffer rod 301 is fixedly installed on the inner side wall of the heat storage box body 100, and a second buffer plate 302 is fixedly installed at the other end of the second buffer rod 301. The second buffer plate 302 is abutted against the side walls of the first installation frame 103 and the second installation frame 104.

[0046] During disassembly, when the fixing rods 308 are disengaged from the limitation of the fixing holes 309, under the action of the second buffer rods 301 and the second buffer plates 302, the first installation frame 103 and the second installation frame 104 can be pushed out of the heat storage box body 100, facilitating the disassembly of the first filter screen 110 and the second filter screen 111, and at the same time preventing damage to the installation frame or the filter screen due to the impact during the disassembly and assembly process.

[0047] SeeFigures 6 - 7 As shown, the anti-blocking mechanism 200 includes a rotating shaft 201, a cam 203, a first mounting groove 204 and a first buffer plate 206. The rotating shaft 201 is provided with two and corresponds to the first mounting frame 103 and the second mounting frame 104 one by one, and one end of the rotating shaft 201 is rotatably connected to the side wall of the heat storage box body 100, and the other end of the rotating shaft 201 rotates through the side wall of the heat storage box body 100. The two rotating shafts 201 are connected by a transmission belt 202. A plurality of cams 203 are sleeved on the rotating shaft 201, and the cams 203 conflict with the surfaces of the first filter screen 110 and the second filter screen 111. The first mounting grooves 204 are symmetrically arranged on the first mounting frame 103 and the second mounting frame 104. A plurality of first buffer rods 205 are fixedly installed in the first mounting grooves 204. The first buffer plate 206 is fixedly installed at one end of the first buffer rod 205 and conflicts with the bottom surfaces of the first filter screen 110 and the second filter screen 111.

[0048] When in use, the drive shaft 201 is driven to rotate, thereby causing the transmission belt 202 on the shaft 201 to rotate. When the long side of the transmission belt 202 conflicts with the surfaces of the first filter screen 110 and the second filter screen 111, the first filter screen 110 and the second filter screen 111 are squeezed, causing the first filter screen 110 and the second filter screen 111 to move downward in the first installation frame 103 and the second installation frame 104. When the short side of the transmission belt 202 conflicts with the surfaces of the first filter screen 110 and the second filter screen 111, under the action of the first buffer rod 205, the first buffer plate 206 pushes the first filter screen 110 and the second filter screen 111 to move upward, and this reciprocating process causes the first filter screen 110 and the second filter screen 111 to vibrate up and down, thereby preventing blockage.

[0049] See also Figure 10 As shown, the cross section of the fixing rod 308 is a trapezoidal shape with a small front end and a large rear end.

[0050] The trapezoidal cross-section design of the fixing rod 308 facilitates its rapid insertion into the fixing hole 309 and increases the stability of the fixing rod 308 after insertion.

[0051] See also Figures 1 - 5 As shown, a rotating motor 105 is fixedly mounted on the side of the heat storage tank body 100, and the output shaft of the rotating motor 105 is transmission-connected to the rotating shaft 201 through a transmission belt 202. A driving bevel gear 106 is transmission-equipped at the output end of the rotating motor 105. A mounting plate 108 is fixedly mounted on the inner wall of the heat storage tank body 100, and a driven bevel gear 107 is rotatably mounted on the mounting plate 108. The driving bevel gear 106 is meshed with the driven bevel gear 107, and an impeller fan 109 is fixedly sleeved on the driven bevel gear 107.

[0052] Start the rotary motor 105 to drive the driving bevel gear 106 to rotate, drive the driven bevel gear 107 to rotate through the driving bevel gear 106, thereby drive the impeller fan 109 to rotate, so as to accelerate the gas flow in the heat storage tank body 100, improve the heat exchange efficiency. At the same time, the rotary motor 105 can drive two rotating shafts 201 to rotate through the transmission belt 202.

[0053] See Figure 5 As shown, heating pipes 112 are fixedly arranged on the two inner side walls of the heat storage tank body 100 behind the second filter screen 111.

[0054] The design of the heating pipes 112 can slow down the decrease of the flue gas temperature in the heat storage tank body 100 and improve the utilization rate of the flue gas.

[0055] See Figures 6 - 10 As shown, handles 113 are fixedly arranged on the first mounting frame 103 and the second mounting frame 104.

[0056] The arrangement of the handles 113 improves the convenience of installation and disassembly of the first mounting frame 103 and the second mounting frame 104.

[0057] The above embodiments only represent one or several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the appended claims.

Claims

1. A heat storage box for recovering residual heat of smelting furnace flue gas, comprising a heat storage box body (100) for recovering smelting furnace flue gas, wherein an air inlet pipe (101) and an air outlet pipe (102) are fixedly arranged on symmetrical sides of the heat storage box body (100), characterized in that: A first installation frame (103) and a second installation frame (104) are slidably arranged in the heat storage tank body (100), and one side of the first installation frame (103) and the second installation frame (104) passes through the heat storage tank body (100); the first installation frame (103) and the second installation frame (104) are arranged in parallel, and the first installation frame (103) is located on the left side of the second installation frame (104); a first filter screen (110) is movably installed in the first installation frame (103), and a second filter screen (111) is movably installed in the second installation frame (104); The diameter of the filtering holes of the second filter screen (111) is smaller than the diameter of the filtering holes of the first filter screen (110); the heat storage tank body (100) is further provided with an anti-blocking mechanism (200) for driving the second filter screen (111) and the first filter screen (110) to move up and down in the first installation frame (103) and the second installation frame (104) respectively to prevent blockage; and the heat storage tank body (100) is provided with a disassembly mechanism (300) for quickly fixing the first installation frame (103) and the second installation frame (104) in the heat storage tank body (100).

2. The heat storage box for recovering residual heat of smelting furnace flue gas according to claim 1, characterized in that: The disassembly and assembly mechanism (300) comprises a second installation groove (303), a sliding plate (305), a sliding rod (306), a spring (307) and a fixing rod (308); The second installation groove (303) is provided on the heat storage tank body (100) and is located on the central axis of the first installation frame (103) and the second installation frame (104); Two sliding plates (305) are symmetrically arranged along the axis of the second mounting groove (303), and the sliding plates (305) are slidably arranged in the second mounting groove (303). The two side walls of the second mounting groove (303) are symmetrically provided with sliding grooves (304) for the sliding plates (305) to slide. The sliding rod (306) is provided with a plurality of groups and both ends of the sliding rod (306) are fixedly arranged on the inner wall of the second mounting groove (303), and the sliding plate (305) slides through the sliding rod (306); The spring (307) is sleeved on the slide bar (306), and two ends of the spring (307) are respectively disposed in contact with the side surfaces of the two slide plates (305); The fixing rod (308) is fixedly mounted on the side of the sliding plate (305) close to the first installation frame (103) and the second installation frame (104), and the first installation frame (103) and the second installation frame (104) are both provided with fixing holes (309) for use with the fixing rod (308).

3. A heat storage box for recovering residual heat of smelting furnace flue gas according to claim 2, characterized in that: The disassembly and assembly mechanism (300) further comprises a second buffer rod (301), wherein the second buffer rod (301) is provided with two groups, and the two groups of second buffer rods (301) respectively contact the side walls of the first installation frame (103) and the second installation frame (104), one end of the second buffer rod (301) is fixedly mounted on the inner side wall of the heat storage box body (100), and the other end of the second buffer rod (301) is fixedly mounted with a second buffer plate (302), and the second buffer plate (302) contacts the side walls of the first installation frame (103) and the second installation frame (104).

4. The heat storage box for recovering residual heat of smelting furnace flue gas according to claim 1, characterized in that: The anti-blocking mechanism (200) comprises a rotating shaft (201), a cam (203), a first mounting groove (204) and a first buffer plate (206); Two rotating shafts (201) are provided and correspond one to one with the first installation frame (103) and the second installation frame (104); one end of the rotating shaft (201) is rotatably connected to the side wall of the heat storage tank body (100); the other end of the rotating shaft (201) rotatably penetrates the side wall of the heat storage tank body (100); and the two rotating shafts (201) are connected in transmission via a transmission belt (202); The rotating shaft (201) is sleeved with a plurality of cams (203), and the cams (203) are in contact with the surfaces of the first filter screen (110) and the second filter screen (111); The first installation groove (204) is symmetrically arranged on the first installation frame (103) and the second installation frame (104), and a plurality of first buffer rods (205) are fixedly installed in the first installation groove (204); The first buffer plate (206) is fixedly mounted on one end of the first buffer rod (205) and contacts the bottom surfaces of the first filter screen (110) and the second filter screen (111).

5. The heat storage box for recovering residual heat of smelting furnace flue gas according to claim 2, characterized in that: The cross section of the fixing rod (308) is a trapezoidal shape with a small front end and a large rear end.

6. The heat storage box for recovering residual heat of smelting furnace flue gas according to claim 1, characterized in that: A rotating motor (105) is fixedly mounted on the side of the heat storage tank body (100); the output shaft of the rotating motor (105) is connected to the rotating shaft (201) through a transmission belt (202); an active bevel gear (106) is provided at the output end of the rotating motor (105); a mounting plate (108) is fixedly mounted on the inner wall of the heat storage tank body (100); a driven bevel gear (107) is rotatably mounted on the mounting plate (108); the active bevel gear (106) is meshed with the driven bevel gear (107); and an impeller fan (109) is fixedly sleeved on the driven bevel gear (107).

7. The heat storage box for recovering residual heat of smelting furnace flue gas according to claim 1, characterized in that: Heating pipes (112) are fixedly provided on the two inner side walls of the heat storage tank body (100) behind the second filter screen (111).

8. The heat storage box for recovering residual heat of smelting furnace flue gas according to claim 1, characterized in that: Handles (113) are fixedly provided on the first installation frame (103) and the second installation frame (104).

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