High-temperature flue gas heat recovery energy-saving device

Abstract

The invention discloses a high-temperature flue gas heat recovery energy-saving device, and relates to the technical field of heat energy recovery, the high-temperature flue gas heat recovery energy-saving device comprises a recovery box body, one side of the recovery box body is communicated with an air inlet pipe, and the upper end face and the lower end face of the recovery box body are respectively communicated with an upper exhaust pipe and a lower exhaust pipe; a T-shaped exhaust pipe is arranged between the upper exhaust pipe and the lower exhaust pipe in a communicating mode, a first piston plate is movably arranged in the recycling box in a lifting mode, finned tubes are arranged on the upper section and the lower section of the inner wall of the recycling box, and two auxiliary mechanisms used in cooperation with the corresponding finned tubes are symmetrically arranged on the recycling box. A lifting driving mechanism used in cooperation with the first piston plate is arranged on the recycling box body, and electromagnetic valves are arranged on the upper exhaust pipe and the lower exhaust pipe correspondingly. During use, waste of heat in high-temperature flue gas can be reduced.

Description

Technical Field

[0001] This invention relates to the field of heat recovery technology, and in particular to an energy-saving device for high-temperature flue gas heat recovery. Background Technology

[0002] Recovering heat from high-temperature flue gas is an important energy-saving and environmentally friendly measure. It can not only improve energy efficiency, but also reduce greenhouse gas emissions and thermal pollution, achieving efficient cascade utilization of energy. At the same time, it can also improve the economic benefits of enterprises, meet environmental compliance standards, and promote green industrial transformation. It is a key measure for the industrial sector to reduce costs and increase efficiency and implement the "dual carbon" target.

[0003] Existing high-temperature flue gas heat recovery energy-saving devices have certain shortcomings in use. For example, existing devices typically use a combination of a recovery box, an inlet pipe, an exhaust pipe, and finned tubes to recover and utilize the heat in high-temperature flue gas. The high-temperature flue gas enters the recovery box through the inlet pipe and is then discharged through the exhaust pipe. During this process, the high-temperature flue gas transfers heat to the finned tubes located in the recovery box. However, because the contact time between the high-temperature flue gas and the finned tubes during the flow is short, the heat transfer time between the high-temperature flue gas and the finned tubes is short. A large amount of flue gas still has a high temperature, but it is directly conducted away by the exhaust pipe, resulting in a waste of heat. Summary of the Invention

[0004] This invention provides a high-temperature flue gas heat recovery and energy-saving device, which can solve the problem of insufficient heat absorption in high-temperature flue gas and heat waste caused by the prior art.

[0005] A high-temperature flue gas heat recovery and energy-saving device includes a recovery box. An air inlet pipe is connected to one side of the recovery box. An upper exhaust pipe and a lower exhaust pipe are respectively connected to the upper and lower end faces of the recovery box. A T-shaped exhaust pipe is connected between the upper and lower exhaust pipes. A piston plate is movably mounted inside the recovery box. Finned tubes are provided in the upper and lower sections of the inner wall of the recovery box. Two auxiliary mechanisms are symmetrically arranged on the recovery box to cooperate with the corresponding finned tubes. A lifting drive mechanism is provided on the recovery box to cooperate with the piston plate. Electromagnetic valves are provided on both the upper and lower exhaust pipes.

[0006] As a further technical solution of the present invention, each of the auxiliary mechanisms includes multiple vertical rotating shafts rotatably disposed within the recycling bin. A fan blade assembly is fixedly sleeved at one end of the vertical rotating shaft near the finned tube. Multiple horizontal rotating shafts are rotatably disposed on the inner wall of the recycling bin. Multiple worm sleeves are fixedly sleeved on the outer surface of each horizontal rotating shaft. A worm wheel sleeve is fixedly sleeved on the outer surface of each vertical rotating shaft. The worm sleeve and the worm wheel sleeve are meshed and connected. Multiple rotating components are disposed on the piston plate to cooperate with the corresponding horizontal rotating shafts. Two pressure adjustment components are disposed on the recycling bin to cooperate with the corresponding finned tubes.

[0007] As a further technical solution of the present invention, each of the rotating components includes two connecting blocks fixed on the piston plate. A rack is fixed on the side of the connecting block near the transverse rotating shaft. One-way ratchet bearings are sleeved at both ends of each transverse rotating shaft. A gear ring that cooperates with the rack is fixedly sleeved on the outer surface of each one-way ratchet bearing.

[0008] As a further technical solution of the present invention, each pressure adjustment component includes two connecting boxes, one side of each connecting box is fixedly inserted into the recovery box, a cavity is opened in the connecting box, one end of the cavity is inserted into the recovery box, a piston plate two is movably arranged in the cavity, and an elastic reset unit is provided on the connecting box to cooperate with the piston plate two.

[0009] As a further technical solution of the present invention, each of the elastic reset units includes multiple guide rods fixed to one side of the piston plate. The end of each guide rod away from the piston plate moves through the connecting box. The ends of the multiple guide rods are fixed to the same connecting plate. Multiple springs are fixed between the connecting plate and the connecting box. Each spring is movably sleeved on the outer surface of the guide rod.

[0010] As a further technical solution of the present invention, each piston plate II is fixed with a plurality of connecting rods on one side, and one end of the plurality of connecting rods is fixed with the same connecting plate II. The connecting box is provided with a plurality of guide units that cooperate with the connecting rods.

[0011] As a further technical solution of the present invention, each of the guide units includes a connecting plate three disposed on one side of the connecting box, two guide rods two fixed on one side of the connecting plate three, one end of each guide rod two movably penetrating into the connecting box, two springs two fixed between the connecting plate three and the connecting box, the springs two movably sleeved on the outer surface of the guide rods two, and multiple ventilation holes are provided through the side wall of the connecting plate three.

[0012] As a further technical solution of the present invention, two control units are symmetrically arranged inside the recycling bin. Each control unit includes a fixed base and a contact switch. The fixed base is fixed to the inner wall of the recycling bin. A guide rod three is fixed to one side of the contact switch. One end of the guide rod three movably passes through the fixed base and is fixed with a limit plate. A spring three is fixed between the contact switch and the fixed base. The spring three is movably sleeved on the outer surface of the guide rod three.

[0013] As a further technical solution of the present invention, the lifting drive mechanism includes two hydraulic rods fixed to the side wall of the recycling bin. Each hydraulic rod has a connecting seat fixed at the end of its telescopic end. The same lifting plate is fixed between the two connecting seats. Multiple connecting columns are fixed on the lower end face of the lifting plate. The lower end of each connecting column movably penetrates the recycling bin and is fixedly connected to the piston plate.

[0014] As a further technical solution of the present invention, the same U-shaped base is fixed on both sides of the recycling box, and the lower end face of the hydraulic rod is fixedly connected to the upper end face of the U-shaped base.

[0015] The beneficial effects of this invention are: 1. In the initial state of use, the piston plate is lower than the horizontal height of the inlet pipe. The high-temperature flue gas to be treated enters the recovery chamber through the inlet pipe and can only be discharged through the upper exhaust pipe. When the upper section of the recovery chamber is filled with high-temperature flue gas, the piston plate moves upward until it is higher than the horizontal height of the inlet pipe. At this point, the solenoid valve blocks the upper exhaust pipe, allowing the high-temperature flue gas in the upper part of the recovery chamber to contact the finned tube above for a longer period. This allows the medium inside the finned tube to fully absorb the heat from the high-temperature flue gas. During the upward movement of the piston plate, the inlet pipe continuously supplies high-temperature flue gas. When the piston plate... When the temperature is above the horizontal height of the intake pipe, the high-temperature flue gas will continuously expand into the lower section of the recovery box. The high-temperature flue gas in the lower section of the recovery box can only be discharged through the lower exhaust pipe. When the lower section of the recovery box is full of high-temperature flue gas, the piston plate moves downward, and then the solenoid valve blocks the lower exhaust pipe, so that the high-temperature flue gas in the lower section of the recovery box can fully contact the finned tube below for heat transfer. During this process, the upper exhaust pipe exhausts the gas, and the intake pipe delivers high-temperature flue gas to the upper section of the recovery box again. Then the above process is repeated, reducing the waste of heat in the high-temperature flue gas without affecting the normal exhaust of the high-temperature flue gas.

[0016] 2. When the high-temperature flue gas in the upper area of ​​the recovery box is transferring heat to the adjacent finned tube, the piston plate is higher than the horizontal height of the inlet pipe. At this time, the upper exhaust pipe is in a closed state. The piston plate can continue to move upward, pushing the high-temperature flue gas closer to the finned tube above, and causing the high-temperature flue gas away from the finned tube to approach the finned tube. During this process, the fan blade assembly does not rotate. When the piston plate moves downward, the rotating assembly drives the horizontal rotating shaft to rotate. The horizontal rotating shaft drives the worm gear sleeve to rotate, thereby driving the worm gear sleeve, the vertical rotating shaft and the fan blade assembly to rotate. The rotating fan blade assembly blows the high-temperature flue gas toward the finned tube above, causing the high-temperature flue gas away from the finned tube to approach the finned tube, assisting in the heat transfer between the high-temperature flue gas and the finned tube.

[0017] 3. When piston plate 2 moves, it will drive connecting rod and connecting plate 2 to move together. During the movement of connecting plate 2, it will cause the nearby high-temperature flue gas to flow, allowing the high-temperature flue gas away from the finned tube to approach the finned tube, thus assisting in the efficient heat transfer between the high-temperature flue gas and the finned tube. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the recycling box in this invention. Figure One ; Figure 3 This is a schematic diagram of the internal structure of the recycling box in this invention. Figure Two ; Figure 4 This is a schematic diagram of the internal structure of the recycling box in this invention. Figure Three ; Figure 5 This is a schematic diagram showing the connection between the worm sleeve and the worm wheel sleeve in this invention; Figure 6 This is a schematic diagram of the connection between the connecting block and the rack in this invention; Figure 7 This is a schematic diagram showing the connection between the connecting box and the piston plate 2 in this invention; Figure 8 This is a schematic diagram showing the connection between the connecting box and the guide rod two in this invention; Figure 9 This is a schematic diagram of the internal structure of the cavity in this invention; Figure 10 This is a schematic diagram of the connection between the contact switch and the guide rod three in this invention.

[0019] In the diagram: 100, Recycling box; 101, Intake pipe; 102, Upper exhaust pipe; 103, Lower exhaust pipe; 104, T-shaped exhaust pipe; 105, Piston plate one; 106, Finned tube; 107, Solenoid valve; 200, Vertical rotating shaft; 201, Fan blade assembly; 202, Horizontal rotating shaft; 203, Worm sleeve; 204, Worm gear sleeve; 205, Connecting block; 206, Rack; 207, One-way ratchet bearing; 208, Gear ring; 300, Connecting box; 301, Cavity; 302. Piston plate two; 303. Guide rod one; 304. Connecting plate one; 305. Spring one; 400. Connecting rod; 401. Connecting plate two; 402. Connecting plate three; 403. Guide rod two; 404. Spring two; 405. Vent hole; 500. Fixed seat; 501. Contact switch; 502. Guide rod three; 503. Limit plate; 504. Spring three; 600. Hydraulic rod; 601. Connecting seat; 602. Lifting plate; 603. Connecting column; 604. U-shaped base. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] Reference Figures 1-10 A high-temperature flue gas heat recovery and energy-saving device includes a recovery box 100. An air inlet pipe 101 is connected to one side of the recovery box 100. An upper exhaust pipe 102 and a lower exhaust pipe 103 are respectively connected to the upper and lower end faces of the recovery box 100. A T-shaped exhaust pipe 104 is connected between the upper exhaust pipe 102 and the lower exhaust pipe 103. A piston plate 105 is movably installed inside the recovery box 100. Finned tubes 106 are provided in the upper and lower sections of the inner wall of the recovery box 100. Two auxiliary mechanisms are symmetrically arranged on the recovery box 100 to cooperate with the corresponding finned tubes 106. A lifting drive mechanism is provided on the recovery box 100 to cooperate with the piston plate 105. Solenoid valves 107 are provided on both the upper exhaust pipe 102 and the lower exhaust pipe 103.

[0022] The finned tube 106 carries a heat conversion medium, and the installation, connection and working principle of the finned tube 106 are existing technologies.

[0023] In the initial state of this application, the piston plate 105 is lower than the horizontal height of the inlet pipe 101. The high-temperature flue gas to be treated enters the recovery box 100 through the inlet pipe 101 and can only be discharged through the upper exhaust pipe 102. When the upper section of the recovery box 100 is filled with high-temperature flue gas, the piston plate 105 moves upward until it is higher than the horizontal height of the inlet pipe 101. At this time, the solenoid valve 107 blocks the upper exhaust pipe 102, allowing the high-temperature flue gas in the upper section of the recovery box 100 to contact the finned tube 106 above it for a longer period. This allows the medium inside the finned tube 106 to fully absorb the heat from the high-temperature flue gas. During the upward movement of the piston plate 105, the inlet pipe 101 continuously supplies high-temperature flue gas. When the piston... When the piston plate 105 is higher than the horizontal height of the inlet pipe 101, the high-temperature flue gas will continue to expand into the lower section of the recovery box 100. The high-temperature flue gas in the lower section of the recovery box 100 can only be discharged through the lower exhaust pipe 103. When the lower section of the recovery box 100 is full of high-temperature flue gas, the piston plate 105 moves downward, and then the solenoid valve 107 blocks the lower exhaust pipe 103, so that the high-temperature flue gas in the lower section of the recovery box 100 can fully contact the finned tube 106 below for heat transfer. During this process, the upper exhaust pipe 102 performs exhaust work, and the inlet pipe 101 delivers high-temperature flue gas to the upper section of the recovery box 100 again. Then the above work is repeated to reduce the waste of heat in the high-temperature flue gas without affecting the normal exhaust of the high-temperature flue gas.

[0024] Each auxiliary mechanism includes multiple vertical rotating shafts 200 rotatably mounted inside the recovery box 100. A fan blade assembly 201 is fixedly sleeved at one end of the vertical rotating shaft 200 near the finned tube 106. Multiple horizontal rotating shafts 202 are rotatably mounted on the inner wall of the recovery box 100. Multiple worm sleeves 203 are fixedly sleeved on the outer surface of each horizontal rotating shaft 202. A worm wheel sleeve 204 is fixedly sleeved on the outer surface of each vertical rotating shaft 200. The worm sleeves 203 and worm wheel sleeves 204 are meshed and connected. Multiple rotating components are provided on the piston plate 105 to cooperate with the corresponding horizontal rotating shafts 202. Two pressure adjustment components are provided on the recovery box 100 to cooperate with the corresponding finned tube 106.

[0025] The upper vertical rotating shaft 200 is rotatably connected to the inner top of the recycling box 100, and the lower vertical rotating shaft 200 is rotatably connected to the inner bottom of the recycling box 100.

[0026] When the high-temperature flue gas in the upper region of the recovery box 100 transfers heat with the adjacent finned tube 106, the piston plate 105 is higher than the horizontal height of the inlet pipe 101. At this time, the upper exhaust pipe 102 is in a closed state. The piston plate 105 can continue to move upward, pushing the high-temperature flue gas closer to the finned tube 106 located above, and causing the high-temperature flue gas away from the finned tube 106 to approach the finned tube 106. During this process, the fan blade assembly 201 does not rotate. When the piston plate 105 moves downward, the rotating assembly drives the transverse rotating shaft 202 to rotate. The transverse rotating shaft 202 drives the worm sleeve 203 to rotate, thereby driving the worm gear sleeve 204, the vertical rotating shaft 200 and the fan blade assembly 201 to rotate. The rotating fan blade assembly 201 blows the high-temperature flue gas toward the finned tube 106 located above, causing the high-temperature flue gas away from the finned tube 106 to approach the finned tube 106, assisting in the heat transfer between the high-temperature flue gas and the finned tube 106.

[0027] When the high-temperature flue gas in the lower region of the recovery box 100 transfers heat with the adjacent finned tube 106, the piston plate 105 is lower than the horizontal height of the inlet pipe 101. At this time, the lower exhaust pipe 103 is in a closed state. The piston plate 105 can continue to move downward, pushing the high-temperature flue gas closer to the finned tube 106 located below. Then, when the piston plate 105 moves upward, it will drive the fan blade assembly 201 located below to rotate, causing the high-temperature flue gas away from the finned tube 106 to approach the finned tube 106.

[0028] Each rotating assembly includes two connecting blocks 205 fixed on the piston plate 105. A rack 206 is fixed on the side of the connecting block 205 near the transverse rotating shaft 202. One-way ratchet bearings 207 are fitted at both ends of each transverse rotating shaft 202. A gear ring 208 that works with the rack 206 is fixedly fitted on the outer surface of each one-way ratchet bearing 207.

[0029] The upper connecting block 205 is fixed to the upper end face of the piston plate 105, and the lower connecting block 205 is fixed to the lower end face of the piston plate 105.

[0030] When the piston plate 105 moves with the connecting block 205 and the rack 206 toward the direction closer to the transverse rotation shaft 202, the one-way ratchet bearing 207 will not drive the transverse rotation shaft 202 to rotate, and thus will not drive the fan blade assembly 201 to rotate. When the piston plate 105 moves with the connecting block 205 and the rack 206 toward the direction away from the transverse rotation shaft 202, the one-way ratchet bearing 207 will drive the transverse rotation shaft 202 to rotate, and thus drive the fan blade assembly 201 to rotate.

[0031] Each pressure adjustment assembly includes two connecting boxes 300. One side of each connecting box 300 is fixedly inserted into the recycling box 100. A cavity 301 is opened in the connecting box 300. One end of the cavity 301 is inserted into the recycling box 100. A piston plate 302 is movably arranged in the cavity 301. An elastic reset unit that works with the piston plate 302 is provided on the connecting box 300.

[0032] When the high-temperature flue gas in the upper region of the recovery box 100 transfers heat with the adjacent finned tube 106, the piston plate 105 is higher than the horizontal height of the inlet pipe 101. When the piston plate 105 continues to move upward, under the action of pressure, it will drive the piston plate 302 to move into the cavity 301. When the piston plate 105 moves downward to reset, the piston plate 302 is reset under the action of the elastic reset unit, ready for the next use.

[0033] Each elastic reset unit includes multiple guide rods 303 fixed to one side of the piston plate 302. The end of each guide rod 303 away from the piston plate 302 moves through the connecting box 300. The ends of the multiple guide rods 303 are fixed to the same connecting plate 304. Multiple springs 305 are fixed between the connecting plate 304 and the connecting box 300. Each spring 305 is movably sleeved on the outer surface of the guide rod 303.

[0034] When piston plate 2 302 moves toward cavity 301, it will drive guide rod 1 303 and connecting plate 1 304 to move together. During the movement, connecting plate 1 304 will stretch spring 1 305. Spring 1 305 is stretched and deformed, storing elastic potential energy, thereby assisting piston plate 2 302 in subsequent reset.

[0035] Each piston plate 302 has multiple connecting rods 400 fixed on one side, and one end of each connecting rod 400 is fixed to the same connecting plate 401. The connecting box 300 is provided with multiple guide units that cooperate with the connecting rods 400.

[0036] As piston plate 302 moves, it will drive connecting rod 400 and connecting plate 401 to move together. As connecting plate 401 moves, it will cause the nearby high-temperature flue gas to flow, allowing the high-temperature flue gas away from finned tube 106 to approach finned tube 106, thus assisting in efficient heat transfer between the high-temperature flue gas and finned tube 106.

[0037] Each guide unit includes a connecting plate 402 disposed on one side of the connecting box 300. Two guide rods 403 are fixed on one side of the connecting plate 402. One end of each guide rod 403 extends movably into the connecting box 300. Two springs 404 are fixed between the connecting plate 402 and the connecting box 300. The springs 404 are movably sleeved on the outer surface of the guide rods 403. Multiple vent holes 405 are provided through the side wall of the connecting plate 402. The connecting rods 400 extend movably through the connecting plate 402.

[0038] The guide rod 403 and the connecting plate 402 work together to support the middle section of the connecting rod 400, preventing the excessively long guide rod 403 from deforming completely.

[0039] Two control units are symmetrically arranged inside the recycling box 100, and the two control units are used in conjunction with the adjacent solenoid valves 107.

[0040] Each control unit includes a fixed base 500 and a contact switch 501. The fixed base 500 is fixed to the inner wall of the recycling box 100. A guide rod 502 is fixed to one side of the contact switch 501. One end of the guide rod 502 movably passes through the fixed base 500 and is fixed with a limit plate 503. A spring 504 is fixed between the contact switch 501 and the fixed base 500. The spring 504 is movably sleeved on the outer surface of the guide rod 502.

[0041] When the high-temperature flue gas in the upper region of the recovery box 100 transfers heat to the adjacent finned tube 106, the piston plate 105 is higher than the horizontal height of the intake pipe 101. At this time, the upper end face of the piston plate 105 contacts the contact switch 501, and the contact switch 501 generates an electrical signal, which causes the corresponding solenoid valve 107 to block the upper exhaust pipe 102.

[0042] When the lower end face of the piston plate 105 contacts the contact switch 501 located below, the contact switch 501 generates an electrical signal, causing the corresponding solenoid valve 107 to block the lower exhaust pipe 103.

[0043] The lifting drive mechanism includes two hydraulic rods 600 fixed to the side wall of the recycling bin 100. Each hydraulic rod 600 has a connecting seat 601 fixed at its telescopic end. The same lifting plate 602 is fixed between the two connecting seats 601. Multiple connecting columns 603 are fixed to the lower end face of the lifting plate 602. The lower end of each connecting column 603 moves through the recycling bin 100 and is fixedly connected to the piston plate 105.

[0044] When the telescopic end of the hydraulic rod 600 extends, it will drive the lifting plate 602, the connecting column 603 and the piston plate 105 to move upward.

[0045] The same U-shaped base 604 is fixed on both sides of the recycling box 100, and the lower end face of the hydraulic rod 600 is fixedly connected to the upper end face of the U-shaped base 604.

[0046] The recycling bin 100 is supported and erected by the U-shaped base 604.

[0047] In use, initially, the piston plate 105 is lower than the horizontal height of the inlet pipe 101. The high-temperature flue gas to be treated enters the recovery chamber 100 through the inlet pipe 101 and can only be discharged through the upper exhaust pipe 102. When the upper section of the recovery chamber 100 is filled with high-temperature flue gas, the piston plate 105 moves upward until it is higher than the horizontal height of the inlet pipe 101. At this time, the solenoid valve 107 blocks the upper exhaust pipe 102, allowing the high-temperature flue gas in the upper section of the recovery chamber 100 to contact the finned tube 106 above it for a longer period. This allows the medium inside the finned tube 106 to fully absorb the heat from the high-temperature flue gas. During the upward movement of the piston plate 105, the inlet pipe 101 continuously supplies high-temperature flue gas. When the piston plate... When the piston plate 105 is higher than the horizontal height of the inlet pipe 101, the high-temperature flue gas will continue to expand into the lower section of the recovery box 100. The high-temperature flue gas in the lower section of the recovery box 100 can only be discharged through the lower exhaust pipe 103. When the lower section of the recovery box 100 is full of high-temperature flue gas, the piston plate 105 moves downward, and then the solenoid valve 107 blocks the lower exhaust pipe 103, so that the high-temperature flue gas in the lower section of the recovery box 100 can fully contact the finned tube 106 below for heat transfer. During this process, the upper exhaust pipe 102 performs exhaust work, and the inlet pipe 101 delivers high-temperature flue gas to the upper section of the recovery box 100 again. Then the above work is repeated to reduce the waste of heat in the high-temperature flue gas without affecting the normal exhaust of the high-temperature flue gas. When the high-temperature flue gas in the upper region of the recovery box 100 transfers heat to the adjacent finned tube 106, the piston plate 105 is higher than the horizontal height of the inlet pipe 101. At this time, the upper exhaust pipe 102 is in a closed state. The piston plate 105 can continue to move upward, pushing the high-temperature flue gas closer to the finned tube 106 located above, and causing the high-temperature flue gas away from the finned tube 106 to approach the finned tube 106. During this process, the fan blade assembly 201 does not rotate. When the piston plate 105 moves downward, the rotating assembly drives the transverse rotating shaft 202 to rotate. The transverse rotating shaft 202 drives the worm sleeve 203 to rotate, thereby driving the worm gear sleeve 204, the vertical rotating shaft 200 and the fan blade assembly 201 to rotate. The rotating fan blade assembly 201 blows the high-temperature flue gas toward the finned tube 106 located above, causing the high-temperature flue gas away from the finned tube 106 to approach the finned tube 106, assisting in the heat transfer between the high-temperature flue gas and the finned tube 106. When the high-temperature flue gas in the lower region of the recovery box 100 transfers heat to the adjacent finned tube 106, the piston plate 105 is lower than the horizontal height of the inlet pipe 101. At this time, the lower exhaust pipe 103 is in a closed state. The piston plate 105 can continue to move downward, pushing the high-temperature flue gas closer to the finned tube 106 located below. Then, when the piston plate 105 moves upward, it will drive the fan blade assembly 201 located below to rotate, causing the high-temperature flue gas away from the finned tube 106 to approach the finned tube 106. When the high-temperature flue gas in the upper area of ​​the recovery box 100 transfers heat with the adjacent finned tube 106, the piston plate 105 is higher than the horizontal height of the inlet pipe 101. When the piston plate 105 continues to move upward, under the action of pressure, it will drive the piston plate 302 to move into the cavity 301. When the piston plate 105 moves downward to reset, the piston plate 302 is reset under the action of the elastic reset unit, ready for the next use. As piston plate 302 moves, it will drive connecting rod 400 and connecting plate 401 to move together. As connecting plate 401 moves, it will cause the nearby high-temperature flue gas to flow, allowing the high-temperature flue gas away from finned tube 106 to approach finned tube 106, thus assisting in efficient heat transfer between the high-temperature flue gas and finned tube 106.

[0048] The above-disclosed embodiments are merely preferred embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A high-temperature flue gas heat recovery and energy-saving device, comprising a recovery housing (100), characterized in that, An air inlet pipe (101) is connected to one side of the recycling box (100). An upper exhaust pipe (102) and a lower exhaust pipe (103) are connected to the upper and lower end faces of the recycling box (100), respectively. A T-shaped exhaust pipe (104) is connected between the upper exhaust pipe (102) and the lower exhaust pipe (103). A piston plate (105) is movable inside the recycling box (100). Finned tubes (106) are provided on the upper and lower sections of the inner wall of the recycling box (100). Two auxiliary mechanisms are symmetrically arranged on the recycling box (100) to cooperate with the corresponding finned tubes (106). A lifting drive mechanism is provided on the recycling box (100) to cooperate with the piston plate (105). Electromagnetic valves (107) are provided on both the upper exhaust pipe (102) and the lower exhaust pipe (103).

2. The high-temperature flue gas heat recovery energy-saving device according to claim 1, characterized in that, Each of the auxiliary mechanisms includes multiple vertical rotating shafts (200) rotatably disposed within the recovery box (100). A fan blade assembly (201) is fixedly sleeved at one end of the vertical rotating shaft (200) near the finned tube (106). Multiple horizontal rotating shafts (202) are rotatably disposed on the inner wall of the recovery box (100). Multiple worm sleeves (203) are fixedly sleeved on the outer surface of each horizontal rotating shaft (202). A worm wheel sleeve (204) is fixedly sleeved on the outer surface of each vertical rotating shaft (200). The worm sleeve (203) and the worm wheel sleeve (204) are meshed and connected. Multiple rotating components are provided on the piston plate (105) to cooperate with the corresponding horizontal rotating shafts (202). Two pressure adjustment components are provided on the recovery box (100) to cooperate with the corresponding finned tubes (106).

3. The high-temperature flue gas heat recovery energy-saving device according to claim 2, characterized in that, Each of the rotating components includes two connecting blocks (205) fixed on piston plate (105). A rack (206) is fixed on the side of the connecting block (205) near the transverse rotating shaft (202). One-way ratchet bearings (207) are fitted at both ends of each transverse rotating shaft (202). A gear ring (208) for use with the rack (206) is fixedly fitted on the outer surface of each one-way ratchet bearing (207).

4. The high-temperature flue gas heat recovery energy-saving device according to claim 2, characterized in that, Each pressure adjustment assembly includes two connecting boxes (300). One side of each connecting box (300) is fixedly inserted into the recycling box (100). A cavity (301) is opened in the connecting box (300). One end of the cavity (301) is inserted into the recycling box (100). A piston plate (302) is movably arranged in the cavity (301). An elastic reset unit is provided on the connecting box (300) to cooperate with the piston plate (302).

5. The high-temperature flue gas heat recovery energy-saving device according to claim 4, characterized in that, Each of the elastic reset units includes multiple guide rods (303) fixed to one side of the piston plate (302). The end of each guide rod (303) away from the piston plate (302) moves through the connecting box (300). The ends of the multiple guide rods (303) are fixed to the same connecting plate (304). Multiple springs (305) are fixed between the connecting plate (304) and the connecting box (300). Each spring (305) is movably sleeved on the outer surface of the guide rod (303).

6. The high-temperature flue gas heat recovery energy-saving device according to claim 4, characterized in that, Each piston plate 2 (302) has multiple connecting rods (400) fixed on one side, and one end of the multiple connecting rods (400) is fixed to the same connecting plate 2 (401). The connecting box (300) is provided with multiple guide units that cooperate with the connecting rods (400).

7. The high-temperature flue gas heat recovery energy-saving device according to claim 6, characterized in that, Each of the guide units includes a connecting plate three (402) disposed on one side of the connecting box (300). Two guide rods two (403) are fixed on one side of the connecting plate three (402). One end of each guide rod two (403) is movably inserted into the connecting box (300). Two springs two (404) are fixed between the connecting plate three (402) and the connecting box (300). The springs two (404) are movably sleeved on the outer surface of the guide rods two (403). Multiple ventilation holes (405) are opened through the side wall of the connecting plate three (402). The connecting rods (400) movably penetrate the connecting plate three (402).

8. The high-temperature flue gas heat recovery energy-saving device according to claim 1, characterized in that, Two control units are symmetrically arranged inside the recycling box (100). Each control unit includes a fixed base (500) and a contact switch (501). The fixed base (500) is fixed to the inner wall of the recycling box (100). A guide rod (502) is fixed to one side of the contact switch (501). One end of the guide rod (502) moves through the fixed base (500) and is fixed with a limit plate (503). A spring (504) is fixed between the contact switch (501) and the fixed base (500). The spring (504) is movably sleeved on the outer surface of the guide rod (502).

9. The high-temperature flue gas heat recovery energy-saving device according to claim 1, characterized in that, The lifting drive mechanism includes two hydraulic rods (600) fixed to the side wall of the recycling box (100). Each hydraulic rod (600) has a connecting seat (601) fixed at the end of its telescopic end. The same lifting plate (602) is fixed between the two connecting seats (601). Multiple connecting columns (603) are fixed on the lower end face of the lifting plate (602). The lower end of each connecting column (603) moves through the recycling box (100) and is fixedly connected to the piston plate (105).

10. A high-temperature flue gas heat recovery energy-saving device according to claim 9, characterized in that, The recycling box (100) is fixed with the same U-shaped base (604) on both sides, and the lower end face of the hydraulic rod (600) is fixedly connected to the upper end face of the U-shaped base (604).

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