A flue gas waste heat utilization device and a utilization method thereof

Abstract

The present invention discloses a flue gas waste heat utilization device and a utilization method thereof, which relates to the technical field of waste heat recovery and utilization, and comprises a bottom box, which is divided into a fluid cavity and a gas cavity by a fixed partition, a plurality of first sleeves are arranged on the top wall of the bottom box, a plurality of second sleeves are arranged on the bottom wall of the bottom box, a plurality of heat-conducting shafts are arranged on the fixed partition, and the upper and lower ends of the heat-conducting shafts are respectively inserted into the first sleeve and the second sleeve, the heat dissipation blades and the first heat-conducting blades are located in the fluid cavity, and the second heat-conducting blades and the heat-absorbing blades are located in the gas cavity. The present invention can recover the heat generated in the combustion process through rapid heat exchange between high-temperature flue gas and low-temperature fluid, reduce energy waste, and improve energy utilization efficiency; in the process of flue gas recovery and utilization, multiple beneficial effects such as energy conservation, environmental protection, and improvement of equipment efficiency can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste heat recovery and utilization, and in particular to a flue gas waste heat utilization device and a utilization method thereof. Background Art

[0002] Flue gas waste heat utilization devices are usually used in boilers, gas hot air furnaces, kilns and other equipment in industrial production processes. They utilize the flue gas waste heat by transferring the heat energy in the flue gas to the fluid (such as water or air) flowing through it.

[0003] As disclosed in a Chinese utility model patent, a flue gas waste heat utilization device (publication number: CN208833043U) includes an exhaust box and an air intake box. An exhaust pipe is provided at the upper end of the exhaust box, and an air intake pipe is provided at the lower end of the air intake box. The exhaust box and the air intake box are connected through air pipes No. Ⅰ, No. Ⅱ, and No. Ⅲ. A rotatable drum is provided between the exhaust box and the air intake box, a plurality of air outlets are formed inside the drum chamber, and an air inlet is formed on the driving side of the drum.

[0004] When flue gas is discharged, it reaches a very high temperature. If this high-temperature flue gas is discharged directly into the environment, it will not only cause energy waste, but also cause a certain degree of damage to the environment. The existing heat exchanger cannot withstand high temperature for a long time, and the high-temperature flue gas cannot be continuously recycled. The thermal efficiency of the heat exchanger is low, and the heat exchange tubes in the heat exchanger have a limited life and need to be replaced regularly, which makes it impossible to effectively utilize the high-temperature flue gas. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a flue gas waste heat utilization device and a utilization method thereof.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions:

[0007] A flue gas waste heat utilization device comprises a bottom box, wherein a transversely distributed fixed partition is fixedly arranged in the middle of the bottom box, and the bottom box is divided into two parts by the fixed partition, wherein the upper part is a fluid cavity and the lower part is a gas cavity;

[0008] A plurality of evenly arranged first clamping holes are provided on the inner top wall of the bottom box, and a first clamping ring extending through the first clamping hole is rotatably engaged therein, and a first sleeve is inserted into the first clamping ring and vertically penetrates and is fixed therein;

[0009] A plurality of evenly arranged second clamping holes are provided on the inner bottom wall of the bottom box, and a second clamping ring that is distributed through the second clamping hole is rotatably engaged therein, and a second sleeve that is vertically penetrated and fixedly connected therein is inserted into the second clamping ring;

[0010] The fixed partition is provided with a plurality of evenly arranged fixed clamping holes, the interior of the fixed clamping holes is rotatably engaged with a fixed clamping ring that is distributed through the holes, a heat-conducting shaft that is vertically penetrated and fixed is inserted into the interior of the fixed clamping ring, the top end of the heat-conducting shaft is rotatably penetrated and inserted into the first sleeve, and the bottom end of the heat-conducting shaft is rotatably penetrated and inserted into the second sleeve;

[0011] A plurality of staggered heat dissipation blades are fixedly disposed on the lower half of the first sleeve, a plurality of staggered first heat conduction blades are fixedly disposed on the upper middle portion of the heat conduction shaft, and the heat dissipation blades and the first heat conduction blades are located in the fluid cavity;

[0012] A plurality of staggered second heat-conducting blades are fixedly disposed at the lower middle portion of the heat-conducting shaft, a plurality of staggered heat-absorbing blades are fixedly disposed at the upper half portion of the second sleeve, and the second heat-conducting blades and the heat-absorbing blades are located in the gas cavity.

[0013] Preferably, an air inlet port is provided in the middle and lower part of the right side wall of the bottom box and is connected to the gas cavity, and an exhaust port is provided in the middle and lower part of the left side wall of the bottom box and is connected to the gas cavity, and a plurality of air guide partition plates are fixedly provided in the gas cavity and are staggered up and down.

[0014] Preferably, a water inlet port is provided in the middle of the left side wall of the bottom box and is connected to the fluid cavity, a drainage port is provided on the top of the right side wall of the bottom box and is connected to the fluid cavity, and a plurality of guide partition plates are fixedly provided in the fluid cavity and are staggered up and down.

[0015] Preferably, the top end portion of the heat-conducting shaft is sleeved with a concentrically fixed first active bevel gear, the top end portion of the first sleeve is sleeved with a concentrically fixed first driven bevel gear, a plurality of evenly arranged first ear seats are fixed on the top surface of the bottom box, a first connecting shaft is rotatably inserted into the top end portion of the first ear seat, and the front end portion of the first connecting shaft is sleeved with a concentrically fixed first linkage bevel gear, and the first linkage bevel gear is respectively meshed and connected with the first active bevel gear and the first driven bevel gear.

[0016] Preferably, the bottom end of the heat-conducting shaft is sleeved with a concentrically fixed second active bevel gear, the bottom end of the second sleeve is sleeved with a concentrically fixed second driven bevel gear, a plurality of evenly arranged second ear seats are fixed on the bottom surface of the bottom box, a second connecting shaft is rotatably inserted into the bottom end of the second ear seat, the front end of each of the second connecting shafts is sleeved with a concentrically fixed second linkage bevel gear, and the second linkage bevel gears are respectively meshed and connected with the second active bevel gear and the second driven bevel gear.

[0017] Preferably, the rear end portions of the first connecting shafts in the rearmost row are sleeved with concentrically fixed reciprocating gears, a pair of rectangular sleeves are fixed at the two corners on the rear side of the top surface of the bottom box, and the rear side of the top surface of the bottom box is provided with transversely distributed rectangular racks, the two end portions of the rectangular racks are slidably inserted in a pair of rectangular sleeves, and the rectangular racks are respectively meshed and connected with a number of reciprocating gears.

[0018] Preferably, a plurality of articulated connecting rods distributed side by side are provided on the top surface of the bottom box, a plurality of movably hinged driven swing arms are provided on the articulated connecting rods, and the other end of the driven swing arm is fixedly connected to the top end of the corresponding heat-conducting shaft.

[0019] Preferably, an L-shaped bracket is fixedly provided on the top of the left side wall of the bottom box, a circular through hole is opened at the left end of the L-shaped bracket, a servo motor with the output end facing upward is fixedly provided inside the circular through hole, and a crank swing arm is fixedly provided at the end of the motor shaft of the servo motor.

[0020] Preferably, the other end of the crank swing arm is provided with a movably hinged crank connecting rod, the other end of the crank connecting rod is movably hinged to one end of the L-shaped swing arm, and the other end of the L-shaped swing arm is fixedly connected to the adjacent driven swing arm.

[0021] The present invention also proposes a method for utilizing the flue gas waste heat utilization device, comprising the following steps:

[0022] Step 1: Under the driving action of the servo motor, the crank swing arm is driven to rotate synchronously, the crank swing arm and the crank connecting rod perform crank reciprocating motion, and drive the L-shaped swing arm and the driven swing arm to swing back and forth. Under the articulation action of the articulated connecting rod and the driven swing arms, the driven swing arms on the same side can be driven to swing back and forth synchronously;

[0023] Step 2: The driven swing arm drives the heat transfer shaft, the first active bevel gear, the first heat transfer blade, the second heat transfer blade, and the second active bevel gear to rotate synchronously and reciprocatingly. The first active bevel gear meshes to drive the first linkage bevel gear, the first connecting shaft, and the reciprocating gear to rotate reciprocatingly. The reciprocating gear meshes again to drive the rectangular rack to slide reciprocatingly along a pair of rectangular sleeves. The rectangular rack meshes again to drive the remaining reciprocating gears, the first connecting shaft, and the first linkage bevel gear to rotate reciprocatingly, so that the first heat transfer blade and the heat dissipation blade rotate alternately in forward and reverse directions.

[0024] Step 3: The first linkage bevel gear meshes again to drive the first driven bevel gear, the first sleeve, and the heat dissipation blade to reciprocate, the second active bevel gear meshes to drive the second linkage bevel gear to reciprocate, and the second linkage bevel gear meshes again to drive the second driven bevel gear, the second sleeve, and the heat absorption blade to reciprocate, so that the second heat conduction blade and the heat absorption blade reciprocate alternately in forward and reverse directions;

[0025] Step 4: The high-temperature flue gas enters the gas cavity through the air inlet port. Under the obstruction of a number of air guide partition plates, the high-temperature flue gas shuttles through the gas cavity in a continuous S-shape. The heat in the high-temperature flue gas is quickly transferred to the second heat-conducting blade and the heat-absorbing blade, and is transferred to the first heat-conducting blade and the heat-dissipating blade along the heat-conducting axis. The high-temperature flue gas is converted into low-temperature flue gas after heat conduction, and the low-temperature flue gas is discharged through the exhaust port.

[0026] Step 5: The low-temperature fluid enters the fluid cavity through the water inlet port. Under the obstruction of several guide partition plates, the low-temperature fluid shuttles through the fluid cavity in a continuous S shape. The heat in the first heat conduction blade and the heat dissipation blade quickly heats the fluid. The low-temperature fluid becomes a high-temperature fluid after heat conduction, and the high-temperature fluid is discharged through the drain port.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. In the present invention, the high-temperature flue gas enters the gas cavity through the air inlet port. Under the obstruction of a plurality of air guide partition plates, the high-temperature flue gas shuttles through the gas cavity in a continuous S-shape. The heat in the high-temperature flue gas is rapidly transferred to the second heat-conducting blade and the heat-absorbing blade, and is transferred to the first heat-conducting blade and the heat-dissipating blade along the heat-conducting shaft. The high-temperature flue gas is converted into low-temperature flue gas after heat conduction, and the low-temperature flue gas is discharged through the exhaust port;

[0029] 2. In the present invention, the low-temperature fluid enters the fluid cavity through the water inlet port. Under the obstruction of a plurality of flow guide partition plates, the low-temperature fluid shuttles in the fluid cavity in a continuous S-shape. The heat in the first heat-conducting blade and the heat-dissipating blade quickly heats the fluid. The low-temperature fluid is converted into a high-temperature fluid through heat conduction, and the high-temperature fluid is discharged along the drainage port.

[0030] In summary, the present invention can recover the heat generated in the combustion process through rapid heat exchange between high-temperature flue gas and low-temperature fluid, reduce energy waste, and improve energy utilization efficiency; in the process of flue gas recovery and utilization, multiple beneficial effects such as energy conservation, environmental protection, and improvement of equipment efficiency can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a rear view schematic diagram of the overall structure of the present invention;

[0034] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention;

[0035] Figure 4 It is a schematic cross-sectional view of the bottom box structure of the present invention;

[0036] Figure 5 It is a schematic diagram of the structure of the heat-conducting shaft, the first sleeve and the second sleeve of the present invention;

[0037] Figure 6 It is an exploded schematic diagram of the heat-conducting shaft, the first sleeve and the second sleeve structure of the present invention;

[0038] Serial numbers in the figure: 1, bottom box; 11, fixed partition; 12, air inlet port; 13, exhaust port; 14, air guide partition plate; 15, water inlet port; 16, drainage port; 17, guide partition plate; 2, fixed snap ring; 21, heat conduction shaft; 22, first heat conduction blade; 23, second heat conduction blade; 24, first active bevel gear; 25, second active bevel gear; 26, first linkage bevel gear; 27, second linkage bevel gear; 3 , driven swing arm; 31, first retaining ring; 32, first sleeve; 33, heat dissipation blade; 34, first driven bevel gear; 35, second retaining ring; 36, second sleeve; 37, heat absorption blade; 38, second driven bevel gear; 4, L-shaped bracket; 41, servo motor; 42, crank swing arm; 43, crank connecting rod; 44, L-shaped swing arm; 45, articulated connecting rod; 46, rectangular sleeve; 47, rectangular rack; 48, reciprocating gear. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Embodiment 1: This embodiment provides a flue gas waste heat utilization device, see Figure 1-6 Specifically, it comprises a bottom box 1, a fixed partition 11 distributed laterally is fixedly arranged in the middle of the bottom box 1, and the bottom box 1 is divided into two parts by the fixed partition 11, the upper part of which is a fluid cavity and the lower part is a gas cavity;

[0041] A plurality of evenly arranged first clamping holes are provided on the inner top wall of the bottom box 1, and a first clamping ring 31 extending through the first clamping hole is rotatably engaged therein, and a first sleeve 32 extending through and fixedly connected therein is inserted vertically thereinto.

[0042] A plurality of evenly arranged second clamping holes are provided on the inner bottom wall of the bottom box 1, and a second clamping ring 35 extending through the second clamping hole is rotatably engaged therein, and a second sleeve 36 extending through the second clamping ring 35 is inserted therein and fixedly connected therein;

[0043] The fixed partition 11 is provided with a plurality of evenly arranged fixed clamping holes, the inside of which is rotatably engaged with a fixed clamping ring 2 that is distributed through it, a heat-conducting shaft 21 that is vertically penetrated and fixed is inserted into the inside of the fixed clamping ring 2, the top end of the heat-conducting shaft 21 is rotatably penetrated and inserted into the first sleeve 32, and the bottom end of the heat-conducting shaft 21 is rotatably penetrated and inserted into the second sleeve 36;

[0044] A plurality of staggered heat dissipation blades 33 are fixedly disposed on the lower half of the first sleeve 32, and a plurality of staggered first heat conduction blades 22 are fixedly disposed on the upper middle portion of the heat conduction shaft 21. The heat dissipation blades 33 and the first heat conduction blades 22 are located in the fluid cavity.

[0045] A plurality of staggered second heat conducting blades 23 are fixedly disposed in the lower middle portion of the heat conducting shaft 21, and a plurality of staggered heat absorbing blades 37 are fixedly disposed in the upper half portion of the second sleeve 36. The second heat conducting blades 23 and the heat absorbing blades 37 are located in the gas cavity.

[0046] Embodiment 2: Based on Embodiment 1, this embodiment further includes:

[0047] In the specific implementation process, Figure 3 and Figure 4 As shown, an air inlet port 12 is provided in the middle and lower part of the right side wall of the bottom box 1 and is connected with the gas cavity. The high-temperature flue gas enters the gas cavity through the air inlet port 12. An exhaust port 13 is provided in the middle and lower part of the left side wall of the bottom box 1 and is connected with the gas cavity. The low-temperature flue gas is discharged through the exhaust port 13. A plurality of air guide partition plates 14 are arranged staggered up and down inside the gas cavity. Under the obstruction of the plurality of air guide partition plates 14, the high-temperature flue gas shuttles through the gas cavity in a continuous S shape. The heat in the high-temperature flue gas is quickly transferred to the second heat-conducting blade 23 and the heat-absorbing blade 37, and is transferred to the first heat-conducting blade 22 and the heat-dissipating blade 33 along the heat-conducting shaft 21. The high-temperature flue gas is converted into low-temperature flue gas after heat conduction.

[0048] A water inlet port 15 is provided in the middle of the left side wall of the bottom box 1 and is connected with the fluid cavity. The low-temperature fluid enters the fluid cavity through the water inlet port 15. A drainage port 16 is provided on the top of the right side wall of the bottom box 1 and is connected with the fluid cavity. The high-temperature fluid is discharged along the drainage port 16. A plurality of guide partition plates 17 are arranged staggered up and down inside the fluid cavity. Under the obstruction of the plurality of guide partition plates 17, the low-temperature fluid shuttles continuously in the fluid cavity in an S shape. The heat in the first heat conduction blade 22 and the heat dissipation blade 33 quickly heats the fluid, and the low-temperature fluid becomes a high-temperature fluid after heat conduction.

[0049] Embodiment 3: Based on Embodiment 2, this embodiment further includes:

[0050] In the specific implementation process, Figure 5 and Figure 6 As shown, the top end of the heat-conducting shaft 21 is sleeved with a concentrically fixed first active bevel gear 24, the top end of the first sleeve 32 is sleeved with a concentrically fixed first driven bevel gear 34, a plurality of evenly arranged first ear seats are fixed on the top surface of the bottom box 1, the top end of the first ear seat is rotatably inserted with a first connecting shaft, the front end of the first connecting shaft is sleeved with a concentrically fixed first linkage bevel gear 26, the first linkage bevel gear 26 is respectively meshed and connected with the first active bevel gear 24 and the first driven bevel gear 34; the first active bevel gear 24 meshes to drive the first linkage bevel gear 26, the first connecting shaft, and the reciprocating gear 48 to reciprocate, and the first linkage bevel gear 26 meshes again to drive the first driven bevel gear 34, the first sleeve 32, and the heat dissipation blades 33 to reciprocate, so that the first heat-conducting blades 22 and the heat dissipation blades 33 reciprocate and rotate alternately in forward and reverse directions;

[0051] The bottom end of the heat-conducting shaft 21 is sleeved with a concentrically fixed second active bevel gear 25, the bottom end of the second sleeve 36 is sleeved with a concentrically fixed second driven bevel gear 38, a plurality of evenly arranged second ear seats are fixed on the bottom surface of the bottom box 1, the bottom end of the second ear seat is rotatably inserted with a second connecting shaft, the front end of each second connecting shaft is sleeved with a concentrically fixed second linkage bevel gear 27, the second linkage bevel gear 27 is respectively meshed and connected with the second active bevel gear 25 and the second driven bevel gear 38; the second active bevel gear 25 meshes and drives the second linkage bevel gear 27 to reciprocate, and the second linkage bevel gear 27 meshes and drives the second driven bevel gear 38, the second sleeve 36, and the heat-absorbing blade 37 to reciprocate, so that the second heat-conducting blade 23 and the heat-absorbing blade 37 reciprocate and rotate alternately in forward and reverse directions.

[0052] Embodiment 4: Based on Embodiment 3, this embodiment further includes:

[0053] In the specific implementation process, Figure 1 and Figure 2 As shown, the rear end of the first connecting shaft in the rearmost row is sleeved with a concentrically fixed reciprocating gear 48, a pair of rectangular sleeves 46 are fixed at the two corners on the rear side of the top surface of the bottom box 1, and a transversely distributed rectangular rack 47 is provided on the rear side of the top surface of the bottom box 1. The two ends of the rectangular rack 47 are slidably inserted in the pair of rectangular sleeves 46, and the rectangular rack 47 is respectively meshed and connected with a plurality of reciprocating gears 48; the reciprocating gear 48 is then meshed to drive the rectangular rack 47 to slide back and forth along the pair of rectangular sleeves 46, and the rectangular rack 47 is then meshed to drive the remaining reciprocating gears 48, the first connecting shaft, and the first linkage bevel gear 26 to reciprocate;

[0054] A plurality of articulated connecting rods 45 are arranged side by side on the top surface of the bottom box 1, and a plurality of movable hinged driven swing arms 3 are arranged on the articulated connecting rods 45, and the other end of the driven swing arm 3 is fixedly connected to the top end of the corresponding heat transfer shaft 21; the articulation between the articulated connecting rod 45 and the plurality of driven swing arms 3 can drive the plurality of driven swing arms 3 on the same side to swing back and forth synchronously;

[0055] An L-shaped bracket 4 is fixedly provided on the top of the left side wall of the bottom box 1. A circular through hole is opened at the left end of the L-shaped bracket 4. A servo motor 41 with an output end facing upward is fixedly provided inside the circular through hole. A crank swing arm 42 is fixedly provided at the motor shaft end of the servo motor 41. Under the driving action of the servo motor 41, the crank swing arm 42 is driven to rotate synchronously.

[0056] The other end of the crank swing arm 42 is provided with a movably hinged crank connecting rod 43, the other end of the crank connecting rod 43 is movably hinged to one end of an L-shaped swing arm 44, and the other end of the L-shaped swing arm 44 is fixedly connected to the adjacent driven swing arm 3; the crank swing arm 42 and the crank connecting rod 43 perform crank reciprocating motion, and drive the L-shaped swing arm 44 and the driven swing arm 3 to swing back and forth.

[0057] Specifically, the working principle and operation method of the present invention are as follows:

[0058] Step 1: Under the driving action of the servo motor 41, the crank swing arm 42 is driven to rotate synchronously, and the crank swing arm 42 and the crank connecting rod 43 perform crank reciprocating motion, and drive the L-shaped swing arm 44 and the driven swing arm 3 to swing back and forth. Under the articulation action of the articulated connecting rod 45 and the driven swing arms 3, the driven swing arms 3 on the same side can be driven to swing back and forth synchronously;

[0059] Step 2: The driven swing arm 3 drives the heat transfer shaft 21, the first active bevel gear 24, the first heat transfer blade 22, the second heat transfer blade 23, and the second active bevel gear 25 to reciprocate synchronously. The first active bevel gear 24 meshes to drive the first linkage bevel gear 26, the first connecting shaft, and the reciprocating gear 48 to reciprocate. The reciprocating gear 48 then meshes to drive the rectangular rack 47 to slide reciprocatingly along a pair of rectangular sleeves 46. The rectangular rack 47 then meshes to drive the remaining reciprocating gears 48, the first connecting shaft, and the first linkage bevel gear 26 to reciprocate, so that the first heat transfer blade 22 and the heat dissipation blade 33 reciprocate and rotate alternately in forward and reverse directions.

[0060] Step 3: The first linkage bevel gear 26 is meshed again to drive the first driven bevel gear 34, the first sleeve 32, and the heat dissipation blade 33 to reciprocate, the second active bevel gear 25 is meshed to drive the second linkage bevel gear 27 to reciprocate, and the second linkage bevel gear 27 is meshed again to drive the second driven bevel gear 38, the second sleeve 36, and the heat absorption blade 37 to reciprocate, so that the second heat conduction blade 23 and the heat absorption blade 37 reciprocate and rotate alternately in forward and reverse directions;

[0061] Step 4: The high-temperature flue gas enters the gas cavity through the air inlet port 12. Under the obstruction of the plurality of air guide partition plates 14, the high-temperature flue gas shuttles through the gas cavity in a continuous S-shape. The heat in the high-temperature flue gas is rapidly transferred to the second heat-conducting blade 23 and the heat-absorbing blade 37, and is transferred to the first heat-conducting blade 22 and the heat-dissipating blade 33 along the heat-conducting shaft 21. The high-temperature flue gas is converted into low-temperature flue gas after heat conduction, and the low-temperature flue gas is discharged through the exhaust port 13.

[0062] Step five, the low-temperature fluid enters the fluid cavity through the water inlet port 15. Under the obstruction of a plurality of guide partition plates 17, the low-temperature fluid shuttles through the fluid cavity in a continuous S shape. The heat in the first heat conduction blade 22 and the heat dissipation blade 33 quickly heats the fluid. The low-temperature fluid becomes a high-temperature fluid after heat conduction, and the high-temperature fluid is discharged along the drain port 16.

[0063] The present invention can recover the heat generated in the combustion process through rapid heat exchange between high-temperature flue gas and low-temperature fluid, reduce energy waste and improve energy utilization efficiency; in the process of flue gas recovery and utilization, multiple beneficial effects such as energy conservation, environmental protection and improvement of equipment efficiency can be achieved.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flue gas waste heat utilization device, comprising a bottom box (1), wherein a transversely distributed fixed partition (11) is fixedly arranged in the middle of the bottom box (1), and the bottom box (1) is divided into two parts by the fixed partition (11), wherein the upper part is a fluid cavity and the lower part is a gas cavity, and the characteristics are: A plurality of evenly arranged first clamping holes are provided on the inner top wall of the bottom box (1), a first clamping ring (31) is rotatably engaged inside the first clamping hole, and a first sleeve (32) is vertically inserted and fixedly penetrated inside the first clamping ring (31); The bottom wall of the bottom box (1) is provided with a plurality of evenly arranged second clamping holes, the interior of the second clamping holes is rotatably engaged with a second clamping ring (35) that is distributed through the second clamping ring (35), and the interior of the second clamping ring (35) is inserted with a second sleeve (36) that is vertically penetrated and fixed; The fixed partition (11) is provided with a plurality of evenly arranged fixing holes, the inside of the fixing holes is rotatably engaged with a fixing clamp (2) that is distributed through the fixing clamp, the inside of the fixing clamp (2) is provided with a heat-conducting shaft (21) that is vertically penetrated and fixed, the top end of the heat-conducting shaft (21) is rotatably penetrated and inserted in the first sleeve (32), and the bottom end of the heat-conducting shaft (21) is rotatably penetrated and inserted in the second sleeve (36); A plurality of staggered heat dissipation blades (33) are fixedly disposed on the lower half of the first sleeve (32), a plurality of staggered first heat conduction blades (22) are fixedly disposed on the upper middle portion of the heat conduction shaft (21), and the heat dissipation blades (33) and the first heat conduction blades (22) are located in the fluid cavity; A plurality of second heat-conducting blades (23) arranged in a staggered manner are fixedly disposed at the lower middle portion of the heat-conducting shaft (21), and a plurality of heat-absorbing blades (37) arranged in a staggered manner are fixedly disposed at the upper half portion of the second sleeve (36), wherein the second heat-conducting blades (23) and the heat-absorbing blades (37) are located in the gas cavity.

2. The flue gas waste heat utilization device according to claim 1, characterized in that: An air inlet port (12) is provided at the lower middle portion of the right side wall of the bottom box (1) and is connected to the gas cavity. An air exhaust port (13) is provided at the lower middle portion of the left side wall of the bottom box (1) and is connected to the gas cavity. A plurality of air guide partition plates (14) are fixedly provided in the gas cavity and are staggered up and down.

3. A flue gas waste heat utilization device according to claim 2, characterized in that: A water inlet port (15) is provided in the middle of the left side wall of the bottom box (1) and is connected to the fluid cavity. A water discharge port (16) is provided at the top of the right side wall of the bottom box (1) and is connected to the fluid cavity. A plurality of guide partition plates (17) are fixedly provided in the fluid cavity and are staggered up and down.

4. The flue gas waste heat utilization device according to claim 3, characterized in that: The top end of the heat-conducting shaft (21) is sleeved with a concentrically fixed first active bevel gear (24), the top end of the first sleeve (32) is sleeved with a concentrically fixed first driven bevel gear (34), a plurality of evenly arranged first ear seats are fixed on the top surface of the bottom box (1), a first connecting shaft is rotatably inserted into the top end of the first ear seat, a concentrically fixed first linkage bevel gear (26) is sleeved at the front end of the first linkage bevel gear (26), and the first linkage bevel gear (26) is meshed and connected with the first active bevel gear (24) and the first driven bevel gear (34) respectively.

5. The flue gas waste heat utilization device according to claim 4, characterized in that: The bottom end of the heat-conducting shaft (21) is sleeved with a concentrically fixed second active bevel gear (25), the bottom end of the second sleeve (36) is sleeved with a concentrically fixed second driven bevel gear (38), a plurality of evenly arranged second ear seats are fixed on the bottom surface of the bottom box (1), a second connecting shaft is rotatably inserted into the bottom end of the second ear seat, the front end of each second connecting shaft is sleeved with a concentrically fixed second linkage bevel gear (27), and the second linkage bevel gear (27) is meshedly connected with the second active bevel gear (25) and the second driven bevel gear (38) respectively.

6. The flue gas waste heat utilization device according to claim 5, characterized in that: The rear ends of the first connecting shafts in the rearmost row are sleeved with concentrically fixed reciprocating gears (48); a pair of rectangular sleeves (46) are fixedly provided at two corners on the rear side of the top surface of the bottom box (1); a transversely distributed rectangular rack (47) is provided on the rear side of the top surface of the bottom box (1); the two ends of the rectangular rack (47) are slidably inserted in the pair of rectangular sleeves (46), and the rectangular racks (47) are respectively meshed and connected with a plurality of reciprocating gears (48).

7. The flue gas waste heat utilization device according to claim 6, characterized in that: A plurality of articulated connecting rods (45) distributed side by side are arranged on the top surface of the bottom box (1), a plurality of movable hinged driven swing arms (3) are arranged on the articulated connecting rods (45), and the other end of the driven swing arm (3) is fixedly connected to the top end of the corresponding heat conduction shaft (21).

8. The flue gas waste heat utilization device according to claim 7, characterized in that: An L-shaped bracket (4) is fixedly provided on the top of the left side wall of the bottom box (1), a circular through hole is provided at the left end of the L-shaped bracket (4), a servo motor (41) with an output end facing upward is fixedly provided inside the circular through hole, and a crank swing arm (42) is fixedly provided at the end of the motor shaft of the servo motor (41).

9. The flue gas waste heat utilization device according to claim 8, characterized in that: The other end of the crank swing arm (42) is provided with a crank connecting rod (43) that is movably hinged, and the other end of the crank connecting rod (43) is movably hinged to one end of an L-shaped swing arm (44), and the other end of the L-shaped swing arm (44) is fixedly connected to an adjacent driven swing arm (3).

10. The method for utilizing the flue gas waste heat utilization device according to claim 9, characterized in that: The following steps are involved: Step 1: Under the driving action of the servo motor (41), the crank swing arm (42) is driven to rotate synchronously, the crank swing arm (42) and the crank connecting rod (43) perform crank reciprocating motion, and drive the L-shaped swing arm (44) and the driven swing arm (3) to swing back and forth, and the hinged action of the hinged connecting rod (45) and the driven swing arms (3) can drive the driven swing arms (3) on the same side to swing back and forth synchronously; Step 2: The driven swing arm (3) drives the heat-conducting shaft (21), the first active bevel gear (24), the first heat-conducting blade (22), the second heat-conducting blade (23), and the second active bevel gear (25) to rotate back and forth synchronously; the first active bevel gear (24) meshes with the first linkage bevel gear (26), the first connecting shaft, and the reciprocating gear (48) to rotate back and forth; the reciprocating gear (48) meshes with the rectangular rack (47) to slide back and forth along a pair of rectangular sleeves (46); the rectangular rack (47) meshes with the remaining reciprocating gears (48), the first connecting shaft, and the first linkage bevel gear (26) to rotate back and forth, so that the first heat-conducting blade (22) and the heat-dissipating blade (33) rotate back and forth alternately in forward and reverse directions; Step 3: the first linkage bevel gear (26) is meshed again to drive the first driven bevel gear (34), the first sleeve (32), and the heat dissipation blade (33) to reciprocate, the second active bevel gear (25) is meshed to drive the second linkage bevel gear (27) to reciprocate, and the second linkage bevel gear (27) is meshed again to drive the second driven bevel gear (38), the second sleeve (36), and the heat absorption blade (37) to reciprocate, so that the second heat conduction blade (23) and the heat absorption blade (37) reciprocate and rotate alternately in forward and reverse directions; Step 4: The high-temperature flue gas enters the gas cavity through the air inlet port (12). Under the obstruction of a plurality of air guide partition plates (14), the high-temperature flue gas continuously shuttles through the gas cavity in an S-shape. The heat in the high-temperature flue gas is rapidly transferred to the second heat-conducting blade (23) and the heat-absorbing blade (37), and is then transferred to the first heat-conducting blade (22) and the heat-dissipating blade (33) along the heat-conducting shaft (21). The high-temperature flue gas is converted into low-temperature flue gas through heat conduction, and the low-temperature flue gas is discharged through the exhaust port (13). Step 5: The low-temperature fluid enters the fluid cavity through the water inlet port (15). Under the obstruction of a plurality of guide partition plates (17), the low-temperature fluid shuttles through the fluid cavity in a continuous S-shape. The heat in the first heat-conducting blade (22) and the heat-dissipating blade (33) quickly heats the fluid. The low-temperature fluid is converted into a high-temperature fluid through heat conduction, and the high-temperature fluid is discharged through the drainage port (16).

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