Flue gas heat energy recovery device

Abstract

The flue gas heat energy recovery device comprises a heat energy recovery mechanism and a purification mechanism, the heat energy recovery mechanism comprises a heat energy recovery box, a flue gas storage and recovery assembly and a driving assembly, the heat energy recovery box is provided with a cavity, a flue gas suction assembly is arranged in the cavity, and a flue gas inlet communicating with the cavity is formed in the heat energy recovery box; the flue gas storage and recovery assembly comprises a flue gas storage pipe and a water pipe, the flue gas storage pipe is rotatably arranged in the cavity, the water pipe is rotatably arranged in the flue gas storage pipe, and a plurality of through holes are formed in the pipe wall of the flue gas storage pipe; the driving assembly is in transmission connection with the flue gas storage pipe so as to drive the flue gas storage pipe to rotate; the purifying mechanism is connected with the heat energy recycling box. According to the flue gas heat energy recovery device disclosed by the invention, the driving assembly drives the flue gas storage pipe to rotate, so that flue gas can enter the flue gas storage pipe more uniformly, water in the water pipe is uniformly heated by the flue gas, heat energy of the flue gas can be fully recovered, and the recovery efficiency of the flue gas heat energy is improved.

Description

Technical Field

[0001] The present application relates to the technical field of fluidized bed boilers, and more specifically, to a flue gas heat energy recovery device. Background Art

[0002] Circulating fluidized bed boiler coal-fired power plants generate a large amount of high-temperature flue gas during the power generation process, which contains rich thermal energy. At present, in order to improve energy utilization efficiency and reduce environmental pollution, boiler flue gas waste heat recovery devices are widely used to recycle and reuse this part of heat. Usually, the sensible heat in the flue gas is transferred to the working fluid through a flue gas-water heat exchanger (such as a flue gas coil) to achieve waste heat recovery.

[0003] The existing flue gas heat energy recovery device is to set a pipe on the inner wall of the flue gas coil. When the flue gas inside the flue gas coil flows through the outer wall of the pipe, the heat generated by the flue gas can heat the water inside the pipe, thereby achieving the purpose of recovering and reusing the flue gas heat energy. However, the recovery efficiency of the existing flue gas heat energy recovery device is low.

[0004] Therefore, how to improve the recovery efficiency of flue gas heat energy has become a technical problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a flue gas heat energy recovery device to improve the recovery efficiency of flue gas heat energy.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A flue gas heat recovery device, comprising:

[0008] A heat recovery mechanism, the heat recovery mechanism comprising a heat recovery box, a smoke storage and recovery component and a drive component, the heat recovery box having a cavity, a smoke suction component being arranged in the cavity, and a smoke inlet communicating with the cavity being arranged on the heat recovery box; the smoke storage and recovery component comprising a smoke storage pipe and a water pipe, the smoke storage pipe being rotatably arranged in the cavity, the water pipe being rotatably arranged in the smoke storage pipe, and a plurality of through holes being opened on the pipe wall of the smoke storage pipe; the drive component being drivingly connected to the smoke storage pipe to drive the smoke storage pipe to rotate;

[0009] A purification mechanism is connected to the heat recovery box.

[0010] Optionally, in the above-mentioned flue gas heat recovery device, the water pipe is rotatably connected to the flue gas storage pipe through a first bearing, and a through groove extending along the axial direction of the first bearing is provided on the first bearing, and the through groove is connected to the outer wall of the water pipe.

[0011] Optionally, in the above-mentioned flue gas heat energy recovery device, the driving assembly includes:

[0012] A driving motor, which is arranged on the heat energy recovery box;

[0013] A first gear, which is connected to the driving motor;

[0014] A second gear, which is connected to the flue gas storage pipe and meshes with the first gear.

[0015] Optionally, in the above-mentioned flue gas heat energy recovery device, it further includes a swinging mechanism, which is connected to the heat energy recovery box and drives the heat energy recovery box to swing.

[0016] Optionally, in the above-mentioned flue gas heat energy recovery device, the swinging mechanism includes a squeezing roller and a rack. The squeezing rollers are arranged on opposite sides of the heat energy recovery box and are respectively connected to both ends of the rack;

[0017] The flue gas heat energy recovery device further includes a mounting plate. The heat energy recovery box is slidably matched with the mounting plate through semi-circular sliders. The rack is connected to the mounting plate and meshes with the second gear.

[0018] Optionally, in the above-mentioned flue gas heat energy recovery device, the planar part of the semi-circular slider is connected to the bottom of the heat energy recovery box, and the arc part of the semi-circular slider abuts against the mounting plate.

[0019] Optionally, in the above-mentioned flue gas heat energy recovery device, the swinging mechanism includes a limiting component, and the limiting component includes:

[0020] A limiting groove, which is opened on the mounting plate, and the extending direction of the limiting groove is the same as the swinging direction of the heat energy recovery box;

[0021] A slider, which is slidably matched with the limiting groove;

[0022] An elastic resetting member, the first end of which is connected to the slider, and the second end is connected to the limiting groove;

[0023] A rotating arm, the first end of which is hinged to the slider, and the second end is hinged to the heat energy recovery box.

[0024] Optionally, in the above-mentioned flue gas heat energy recovery device, the limiting component further includes a guiding column, which is arranged in the limiting groove, and the slider is slidably matched with the guiding column.

[0025] Optionally, in the above-mentioned flue gas heat energy recovery device, a bracket is provided on the mounting plate, and the bracket is slidably engaged with the second gear through a connecting block assembly.

[0026] Optionally, in the above-mentioned flue gas heat energy recovery device, the connecting block assembly includes a first connecting block and a second connecting block. One end of the first connecting block is connected to the bracket, and the other end is connected to the second connecting block. The second connecting block is slidably connected to the second gear.

[0027] Optionally, in the above-mentioned flue gas heat energy recovery device, a chute is provided on the bracket, and the rack is slidably engaged with the chute.

[0028] Optionally, in the above-mentioned flue gas heat energy recovery device, the flue gas suction assembly includes a suction fan, a suction air pipe communicated with the suction fan, and a suction head provided on the suction air pipe.

[0029] Optionally, in the above-mentioned flue gas heat energy recovery device, the purification mechanism includes:

[0030] A purification box is provided outside the heat energy recovery box, and an exhaust pipe is provided at the top of the purification box;

[0031] A connecting pipe communicates the purification box with the cavity, and a suction head is provided at one end of the connecting pipe extending into the cavity.

[0032] Optionally, in the above-mentioned flue gas heat energy recovery device, a flue gas accommodation chamber and a purification component provided at the top of the accommodation chamber are provided in the purification box, and the connecting pipe communicates the cavity and the flue gas accommodation chamber;

[0033] Along the flue gas flow direction, the purification component includes an activated carbon adsorption layer, a filter layer, a heat insulation layer, an alkaline solution reaction layer, and a purification layer.

[0034] As can be seen from the above solution, in the flue gas heat energy recovery device disclosed in the present application, the driving component drives the flue gas storage pipe to rotate, which can make the flue gas enter the interior of the flue gas storage pipe more evenly, so that the flue gas can uniformly heat the water in the water pipe, enabling the flue gas and water to fully exchange heat, and further fully recovering the heat energy of the flue gas, improving the recovery efficiency of the flue gas heat energy; the setting of the purification mechanism can purify the flue gas and remove harmful impurities in the flue gas. Description of the Drawings

[0035] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0036] Figure 1 Structural schematic diagram of the flue gas heat energy recovery device disclosed in the embodiment of the present application;

[0037] Figure 2 Cross-sectional view of the flue gas heat energy recovery device disclosed in the embodiment of the present application;

[0038] Figure 3 Cross-sectional view of the heat energy recovery mechanism disclosed in the embodiment of the present application;

[0039] Figure 4 Is Figure 3 Partial enlarged view of A in

[0040] Figure 5 Structural schematic diagram of the flue gas storage pipe disclosed in the embodiment of the present application;

[0041] Figure 6 Structural schematic diagram of the swing mechanism disclosed in the embodiment of the present application;

[0042] Figure 7 Is Figure 6 Partial enlarged view of B in

[0043] Figure 8 Is Figure 6 Partial enlarged view of C in

[0044] Figure 9 Structural schematic diagram of the purification mechanism disclosed in the embodiment of the present application.

[0045] Among them, 100 is the heat energy recovery mechanism, 110 is the heat energy recovery box, 111 is the cavity, 112 is the flue gas inlet, 113 is the semi-circular slider, 120 is the flue gas storage and recovery assembly, 121 is the flue gas storage pipe, 1211 is the through hole, 122 is the water pipe, 123 is the first bearing, 1231 is the through groove, 124 is the second bearing, 130 is the drive assembly, 131 is the drive motor, 1311 is the motor output shaft, 132 is the first gear, 133 is the second gear, 140 is the flue gas suction assembly, 141 is the suction fan, 142 is the suction air pipe, 143 is the suction head;

[0046] 200 is the purification mechanism, 210 is the purification box, 211 is the flue gas accommodation chamber, 212 is the purification component, 2121 is the activated carbon adsorption layer, 2122 is the filter layer, 2123 is the heat insulation layer, 2124 is the alkaline solution reaction layer, 2125 is the purification layer, 213 is the exhaust pipe, 220 is the connecting pipe, 221 is the suction head;

[0047] 300 is the swinging mechanism, 310 is the extrusion roller, 320 is the rack, 321 is the third connecting block, 322 is the connecting column, 323 is the moving block, 330 is the limiting component, 331 is the limiting groove, 332 is the slider, 333 is the elastic resetting member, 334 is the rotating arm, 335 is the guiding column;

[0048] 400 is the mounting plate, 410 is the bracket, 411 is the chute, 412 is the support column, 413 is the support plate, 420 is the support leg, 430 is the first connecting block, 440 is the second connecting block. Detailed implementation mode

[0049] The core of this application is to disclose a flue gas heat energy recovery device to improve the recovery efficiency of flue gas heat energy.

[0050] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

[0051] As Figure 1 and Figure 2 shown, the embodiments of this application disclose a flue gas heat energy recovery device, including a heat energy recovery mechanism 100 and a purification mechanism 200.

[0052] Among them, the heat energy recovery mechanism 100 includes a heat energy recovery box 110, a flue gas storage and recovery component 120, and a driving component 130. As Figure 2 shown, the heat energy recovery box 110 has a cavity 111, a flue gas suction component 140 is arranged in the cavity 111, and a flue gas inlet 112 communicating with the cavity 111 is arranged on the heat energy recovery box 110. As Figure 3 and Figure 5 shown, the flue gas storage and recovery component 120 includes a flue gas storage pipe 121 and a water pipe 122. The flue gas storage pipe 121 is rotatably arranged in the cavity 111, the water pipe 122 is rotatably arranged in the flue gas storage pipe 121, and a plurality of through holes 1211 are formed in the pipe wall of the flue gas storage pipe 121 so that flue gas can enter the flue gas storage pipe 121 through the through holes 1211 to heat the water in the water pipe 122. As Figure 1As shown in the figure, the driving component 130 is drivingly connected to the flue gas storage pipe 121 to drive the flue gas storage pipe 121 to rotate. The purification mechanism 200 is connected to the heat energy recovery box 110 to purify the flue gas after the temperature is reduced and then discharge it.

[0053] Preferably, the flue gas storage pipe 121 is a flue gas coil pipe, and the through holes 1211 are uniformly arranged along the circumferential direction of the flue gas storage pipe 121. The specific number of the through holes 1211 and the distance between two adjacent through holes 1211 can be specifically set according to the actual situation. The flue gas inlets 112 include two and are symmetrically arranged along the center of the heat energy recovery box 110. Each flue gas inlet 112 may include a plurality of flue gas through holes opened on the side wall of the cavity 111.

[0054] When it is necessary to recover and treat the flue gas inside the circulating fluidized bed boiler coal-fired power plant, the staff turn on the flue gas suction component 140, and the flue gas enters the cavity 111 through the flue gas inlets 112. The flue gas enters the inside of the flue gas storage pipe 121 through the through holes 1211 on the outer wall of the flue gas storage pipe 121 to heat the water in the heating water pipe 122. Start the driving component 130, and the driving component 130 drives the flue gas storage pipe 121 to rotate so that the flue gas can enter the inside of the flue gas storage pipe 121 evenly, so that the flue gas heats the water in the water pipe more evenly.

[0055] In the flue gas heat energy recovery device disclosed in the embodiment of the present application, the driving component 130 drives the flue gas storage pipe 121 to rotate, which can make the flue gas enter the inside of the flue gas storage pipe 121 more evenly, so that the flue gas heats the water in the water pipe evenly. Compared with the prior art where the water temperature in the water pipe 122 is uneven, which hinders the effective transfer of heat, it can make the flue gas and water fully exchange heat, so as to fully recover the heat energy of the flue gas and improve the recovery efficiency of the heat energy of the flue gas; the setting of the purification mechanism 200 can purify the flue gas and remove harmful impurities in the flue gas.

[0056] It should be noted that the driving component 130 includes a variety of setting schemes, and a power source and a transmission system can be drivingly connected to drive the flue gas storage pipe 121 to rotate. The power source can be a motor, a motor, etc., and the transmission system can be a belt and a pulley, a chain and a sprocket, a gear component, etc. Specifically, the motor can be connected to the flue gas storage pipe 121 through a belt and a pulley; or the motor can be connected to the flue gas storage pipe 121 through a chain and a sprocket; of course, other methods can also be used as long as the flue gas storage pipe 121 can be driven to rotate.

[0057] Furthermore, as Figures 3 - 5As shown, in order to further improve the uniformity of flue gas heating water, in some specific embodiments, the water pipe 122 is rotatably connected to the flue gas storage pipe 121 through the first bearing 123. A through groove 1231 extending along the axial direction of the first bearing 123 is provided on the first bearing 123, and the through groove 1231 communicates with the outer wall of the water pipe 122. Specifically, the outer wall of the first bearing 123 is connected to the inner wall of the flue gas storage pipe 121, the water pipe 122 is rotatably fitted with the inner wall of the first bearing 123, and the first bearing 123 includes at least one. The through groove 1231 includes one or a plurality of through grooves arranged at intervals along the circumferential direction of the first bearing 123. The flue gas enters the inside of the flue gas storage pipe 121 through the through hole 1211 on the flue gas storage pipe 121. The setting of the through groove 1231 enables the flue gas to enter the inside of the through groove 1231, heats the water in the water pipe 122, enables the flue gas to be evenly attached to the water pipe 122, can further improve the uniformity of flue gas heating water, thereby realizing full heat exchange between the flue gas and the water, and further improving the flue gas heat energy recovery efficiency.

[0058] Further, in some specific embodiments, as Figure 6 and Figure 8 shown, the driving assembly 130 includes a driving motor 131, a first gear 132 and a second gear 133. The driving motor 131 is arranged on the heat energy recovery box 110. The first gear 132 is connected to the motor output shaft 1311 of the driving motor 131. The second gear 133 is connected to the flue gas storage pipe 121 and meshes with the first gear 132. When the flue gas storage pipe 121 needs to rotate, the driving motor 131 is turned on. The driving motor 131 rotates, drives the first gear 132 to rotate, thereby drives the second gear 133 to rotate, and further drives the flue gas storage pipe 121 to rotate. By changing the rotation direction of the driving motor 131, the rotation direction of the flue gas storage pipe 121 can be changed so that the flue gas can enter the flue gas storage pipe 121 evenly, realizing uniform heating of the water. Further, as Figure 5 shown, the flue gas storage pipe 121 is rotatably connected to the heat energy recovery box 110 through the second bearing 124.

[0059] Further, in some specific embodiments, the flue gas heat energy recovery device further includes a swing mechanism 300. The swing mechanism 300 is connected to the heat energy recovery box 110 to drive the heat energy recovery box 110 to swing. The swing mechanism 300 drives the heat energy recovery box 110 to swing so that the flue gas can enter the flue gas storage pipe 121 more evenly. It should be noted that there are various setting schemes for the swing mechanism 300. Specifically, the piston rod of a driving cylinder can be hinged to the heat energy recovery box 110, and the swing of the heat energy recovery box 110 is realized by the telescopic movement of the piston rod. Preferably, two driving cylinders are included and are respectively arranged on the opposite sides of the heat energy recovery box 110. The piston rods of the two driving cylinders are respectively hinged to the side walls of the heat energy recovery box 110, and the two driving cylinders cooperate to enable the heat energy recovery box 110 to swing. The setting of the swing mechanism 300 can make the flue gas in the cavity 111 enter the flue gas storage pipe 121 more evenly, so that the flue gas can evenly heat the water in the water pipe 122, and can further improve the recovery efficiency of the flue gas heat energy.

[0060] Further, in some specific embodiments, such as Figure 1 and Figure 6 shown, the swing mechanism 300 includes a pressing roller 310 and a rack 320. The pressing rollers 310 are arranged on the opposite sides of the heat energy recovery box 110 and are respectively connected to both ends of the rack 320. The flue gas heat energy recovery device further includes a mounting plate 400. The heat energy recovery box 110 is slidably matched with the mounting plate 400 through a semi-circular slider 113. The rack 320 is connected to the mounting plate 400 and meshes with the second gear 133.

[0061] Specifically, as Figure 6 shown, the pressing roller 310 is connected to the rack 320 through a connecting column 322 and a third connecting block 321. The rack 320 is connected to the third connecting block 321. The third connecting block 321 is connected to the connecting column 322. The connecting column 322 is connected to the pressing roller 310. Specifically, a detachable connection method or a non-detachable connection method can be adopted, such as snap connection, or connection through a connecting piece, or welding connection. In order to ensure the firmness of the connection, the welding connection method is preferably used for connection. The flat part of the semi-circular slider 113 is connected to the bottom of the heat energy recovery box 110, and the arc part of the semi-circular slider 113 abuts against the mounting plate 400.

[0062] During use, the drive motor 131 drives the first gear 132 to rotate. The second gear 133 meshes with the first gear 132 and rotates, driving the flue gas storage pipe 121 to rotate. The second gear 133 meshes with the rack 320, and the rack 320 moves, driving the extrusion roller 310 to move. During the movement of the extrusion roller 310, it will extrude the heat recovery box 110. Under the action of the semi-circular slider 113, the heat recovery box 110 can swing reciprocally. By changing the rotation direction of the drive motor 131, the moving direction of the rack 320 can be changed so that the extrusion rollers 310 arranged on both sides of the heat recovery box 110 respectively extrude the heat recovery box 110. The reciprocal swing of the heat recovery box 110 can make the flue gas enter the flue gas storage pipe 121 more evenly, and the water in the heating water pipe 122 more evenly, so that the flue gas and water can fully exchange heat.

[0063] Further, in order to limit the swing range, swing stroke and swing angle of the heat recovery box 110, the swing mechanism 300 includes a limit component 330. Specifically, as Figure 6 and Figure 7 shown, the limit component 330 includes a limit groove 331, a slider 332, an elastic reset member 333 and a rotating arm 334. Specifically, the limit groove 331 is opened on the mounting plate 400 and extends in the same direction as the swing direction of the heat recovery box 110. The slider 332 is slidably matched with the limit groove 331. The first end of the elastic reset member 333 is connected to the slider 332, and the second end is connected to the limit groove 331. One end of the rotating arm 334 is hinged to the slider 332, and the second end is hinged to the heat recovery box 110.

[0064] When the heat recovery box 110 swings, it causes the rotating arm 334 to rotate and pushes the slider 332 to slide along the limit groove 331, and compresses or stretches the elastic reset member 333, realizing the limit during the swing of the heat recovery box 110 and preventing the heat recovery box 110 from tipping over. Preferably, a plurality of limit components 330 are included and are respectively arranged on both sides of the swing direction of the heat recovery box 110. Figure 1 As shown in

[0065] the limit component 330 includes six, and every three limit components 330 are arranged on the same side of the heat recovery box 110.

[0066] In some other specific embodiments, the limit component 330 can adopt an angle sensor, and the angle sensor is connected to the control system to limit the swing range of the heat recovery box 110.

[0067] Further, a bracket 410 is provided on the mounting plate 400, and the bracket 410 is slidably engaged with the second gear through a connecting block assembly. Specifically, as Figure 6 and Figure 8 shown, the connecting block assembly includes a first connecting block 430 and a second connecting block 440. One end of the first connecting block 430 is connected to the bracket 410, and the other end is connected to the second connecting block 440. The second connecting block 440 is slidably engaged with the second gear. The first connecting block 430 is preferably an L-shaped connecting block. The connection manner between the first connecting block 430 and the bracket 410 can be a snap connection manner or a welding connection manner. The second connecting block 440 is preferably a T-shaped connecting block. The first connecting block 430 and the second connecting block 440 can be detachably or non-detachably connected, and can be connected by a snap connection manner or a welding connection manner. The second connecting block 440 is slidably connected to the side wall of the second gear 133. The settings of the first connecting block 430 and the second connecting block 440 can limit the second gear 133, so that the heat recovery box 110 swings along the axial direction of the flue gas storage pipe 121 when swinging.

[0068] Further, as Figure 1 and Figure 6 shown, in some specific embodiments, a chute 411 is provided on the bracket 410, and the rack 320 is slidably engaged with the chute 411. Specifically, the bracket 410 includes a support column 412 and a support plate 413. The support plate 413 is disposed between the two support columns 412. The extending direction of the support plate 413 is the same as the extending direction of the rack 320. The chute 411 is opened on the support plate 413 and extends in the same direction as the rack 320. The rack 320 is slidably engaged with the chute 411 through a moving block 323. The setting of the chute 411 can limit the moving stroke of the rack 320. The support column 412 is detachably or non-detachably connected to the mounting plate 400. For example, it can be connected by a snap connection manner or a welding connection manner. The support plate 413 is detachably or non-detachably connected to the support column 412. Specifically, it can be connected by a welding connection manner or a snap connection manner, and preferably by a welding connection manner.

[0069] Further, on the basis of the above embodiments, a limit switch or a photoelectric sensor can be provided on the chute 411 to limit the stroke of the rack 320. In some other specific embodiments, the chute 411 can be opened on the mounting plate 400. The moving block 323 includes a first connecting arm connected to the rack 320 and a second connecting arm cooperating with the chute 411. It is necessary to ensure that the setting of the moving block 323 does not affect the passage of the water pipe 122.

[0070] Further, as Figure 2 and Figure 3As shown, the flue gas suction assembly 140 includes a suction fan 141, a suction air duct 142, and a suction head 143. The suction air duct 142 is connected to the suction fan 141, and the suction head 143 is arranged on the suction air duct 142. The number of suction air ducts 142 can include multiple, and in the figure, the number of suction air ducts 142 shown is two.

[0071] Further, as Figure 1 shown, a support leg 420 is arranged at the bottom of the mounting plate 400. The number of support legs 420 includes multiple. Preferably, the number of support legs 420 includes four. The four support legs 420 have the same structure and are installed at the four corners of the bottom of the mounting plate 400 to support the mounting plate 400. In some other specific embodiments, a moving wheel can be arranged at the bottom of the mounting plate 400. The moving wheel is preferably a liftable type, so that when it is necessary to move, the device can be moved to the position where flue gas needs to be recovered through the moving wheel. When it is necessary to recover and use the flue gas, the moving wheel is lifted, and the support leg 420 plays a supporting role.

[0072] Further, the purification mechanism 200 includes a purification box 210 and a connecting pipe 220. The purification box 210 is arranged outside the heat energy recovery box 110. An exhaust pipe 213 is arranged at the top of the purification box 210. The connecting pipe 220 connects the purification box 210 and the cavity 111. One end of the connecting pipe 220 extending into the cavity 111 is provided with a suction head 221. After the flue gas recovery is completed, the staff can start the motor connected to the suction head 221, so that the flue gas inside the heat energy recovery box 110 enters the inside of the purification box 210 through the suction head 221 and the connecting pipe 220, and is discharged through the exhaust pipe 213 after purification. The outer shape of the suction head 221 is preferably a conical structure.

[0073] Further, as Figure 9 shown, a flue gas accommodation cavity 211 is arranged inside the purification box 210, and a purification assembly 212 is arranged at the top of the accommodation cavity. The connecting pipe 220 connects the cavity 111 and the flue gas accommodation cavity 211. Along the flue gas flow direction, the purification assembly 212 includes an activated carbon adsorption layer 2121, a filter layer 2122, a heat insulation layer 2123, an alkaline solution reaction layer 2124, and a purification layer 2125.

[0074] After the flue gas enters the purification box 210, it first passes through the activated carbon adsorption layer 2121, and the activated carbon adsorption layer 2121 adsorbs the odor in the flue gas. Then it passes through the filter layer 2122, and the filter layer 2122 can filter the impurities in the flue gas. During the filtering process, the heat insulation layer 2123 can block the heat in the flue gas. Then the flue gas undergoes a chemical reaction through the alkaline solution reaction layer 2124 to treat the waste gas containing strong acidity or alkalinity. Finally, the flue gas contacts the purification layer 2125 to remove the harmful impurities in the flue gas, making the flue gas meet the allowable emission standard and be discharged through the exhaust pipe 213.

[0075] It should be noted that the various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts among the embodiments can be referred to each other.

[0076] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0077] It should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0078] Specific examples are used herein to elaborate on the principles and implementation manners of the present application. The descriptions of the above embodiments are only used to help understand the core idea of the present application. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A flue gas heat energy recovery device, characterized in that, Comprising: A heat energy recovery mechanism (100), the heat energy recovery mechanism (100) includes a heat energy recovery box (110), a flue gas storage and recovery component (120) and a driving component (130). The heat energy recovery box (110) has a cavity (111), and a flue gas suction component (140) is arranged in the cavity (111). A flue gas inlet (112) communicating with the cavity (111) is arranged on the heat energy recovery box (110); The flue gas storage and recovery component (120) includes a flue gas storage pipe (121) and a water pipe (122). The flue gas storage pipe (121) is rotatably arranged in the cavity (111), the water pipe (122) is rotatably arranged in the flue gas storage pipe (121), and a plurality of through holes (1211) are formed in the pipe wall of the flue gas storage pipe (121); The driving component (130) is in transmission connection with the flue gas storage pipe (121) to drive the flue gas storage pipe (121) to rotate; A purification mechanism (200), the purification mechanism (200) is connected to the heat energy recovery box (110).

2. The flue gas heat energy recovery device according to claim 1, wherein The water pipe (122) is rotatably connected to the flue gas storage pipe (121) through a first bearing (123). A through groove (1231) extending along the axial direction of the first bearing (123) is formed in the first bearing (123), and the through groove (1231) communicates with the outer wall of the water pipe (122).

3. The flue gas heat energy recovery device according to claim 2, characterized in that The driving component (130) includes: A driving motor (131), the driving motor (131) is arranged on the heat energy recovery box (110); A first gear (132), the first gear (132) is connected to the driving motor (131); A second gear (133), the second gear (133) is connected to the flue gas storage pipe (121) and meshes with the first gear (132).

4. The flue gas heat energy recovery device according to claim 3, wherein It further includes a swing mechanism (300), the swing mechanism (300) is connected to the heat energy recovery box (110) to drive the heat energy recovery box (110) to swing.

5. The flue gas heat energy recovery device according to claim 4, wherein The swing mechanism (300) includes a pressing roller (310) and a rack (320). The pressing rollers (310) are arranged on two opposite sides of the heat energy recovery box (110) and are respectively connected to both ends of the rack (320); The flue gas heat energy recovery device further includes a mounting plate (400). The heat energy recovery box (110) is in sliding fit with the mounting plate (400) through a semi-circular slider (113). The rack (320) is connected to the mounting plate (400), and the rack (320) meshes with the second gear (133).

6. The flue gas heat energy recovery device according to claim 5, characterized in that, The flat part of the semi-circular slider (113) is connected to the bottom of the heat energy recovery box (110), and the arc part of the semi-circular slider (113) abuts against the mounting plate (400).

7. The flue gas heat energy recovery device according to claim 5, characterized in that The swing mechanism (300) includes a limiting component (330), and the limiting component (330) includes: A limiting groove (331) is provided on the mounting plate (400), and the extending direction of the limiting groove (331) is the same as the swinging direction of the heat recovery box (110); A slider (332) is slidably engaged with the limiting groove (331); An elastic reset member (333) has its first end connected to the slider (332) and its second end connected to the limiting groove (331); A rotating arm (334) has its first end hinged to the slider (332) and its second end hinged to the heat recovery box (110).

8. The flue gas heat energy recovery device according to claim 7, characterized in that, The limiting component (330) further includes a guiding column (335) disposed in the limiting groove (331), and the slider (332) is slidably engaged with the guiding column (335).

9. The flue gas heat energy recovery device according to claim 6, characterized in that A bracket (410) is provided on the mounting plate (400), and the bracket (410) is slidably engaged with the second gear (133) through a connecting block assembly.

10. The flue gas heat energy recovery device according to claim 9, characterized in that, The connecting block assembly includes a first connecting block (430) and a second connecting block (440). One end of the first connecting block (430) is connected to the bracket (410), and the other end is connected to the second connecting block (440), and the second connecting block (440) is slidably connected to the second gear (133).

11. The flue gas heat energy recovery device according to claim 9, characterized in that, A chute (411) is provided on the bracket (410), and the rack (320) is slidably engaged with the chute (411).

12. The flue gas heat energy recovery device according to claim 1, characterized in that, The flue gas suction assembly (140) includes a suction fan (141), a suction duct (142) communicating with the suction fan (141), and a suction head (143) provided on the suction duct (142).

13. The flue gas heat energy recovery device according to any one of claims 1-12, characterized in that, The purification mechanism (200) includes: A purification box (210) is provided outside the heat recovery box (110), and an exhaust pipe (213) is provided at the top of the purification box (210); A connecting pipe (220) connects the purification box (210) and the cavity (111), and a suction head (221) is provided at one end of the connecting pipe (220) extending into the cavity (111).

14. The flue gas heat energy recovery device according to claim 13, wherein A flue gas accommodation chamber (211) and a purification component (212) provided at the top of the accommodation chamber are provided in the purification box (210), and the connecting pipe (220) connects the cavity (111) and the flue gas accommodation chamber (211); Along the flue gas flow direction, the purification component (212) includes an activated carbon adsorption layer (2121), a filter layer (2122), a heat insulation layer (2123), an alkaline solution reaction layer (2124), and a purification layer (2125).

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