A high efficiency fume recovery boiler

Abstract

The present application relates to the technical fields of boiler energy recovery, in particular to a high-efficiency flue gas recovery boiler, which comprises a support, a boiler device, an air fryer device, a flue gas heat exchange device and a water tank, the boiler device, the air fryer device and the flue gas heat exchange device are arranged on the surface of the support, the boiler device is connected with the air fryer device and the flue gas heat exchange device through a flue, the water tank is connected with the air fryer device and the flue gas heat exchange device through a pipeline, the air fryer device comprises a flue gas discharge pipe, an evaporation water tank, a water vapor discharge pipe one and a heat exchange pipe, the two ends of the flue gas discharge pipe are connected with the boiler device and the evaporation water tank respectively, one side of the evaporation water tank is connected with the heat exchange pipe through the water vapor discharge pipe one, and the heat exchange pipe is connected with the air fryer device; the present application is provided with the setting of heating water outside the pipeline through the spiral heat dissipation pipe, the pipeline in unit volume is longer, the water heating area is larger, and the heat transfer efficiency is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of boiler energy recovery, in particular to a high-efficiency flue gas recovery boiler. BACKGROUND

[0002] The boiler is an energy conversion device, the energy input into the boiler has chemical energy in the fuel, electric energy, the boiler outputs steam, high-temperature water or organic heat carrier with certain heat energy. The hot water or steam generated in the boiler can directly provide the required heat energy for industrial production and people's life, or can be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electric energy through a generator.

[0003] The exhaust port of the existing boiler is generally arranged beside the center position of the bottom of the base, and the exhaust fan is arranged outside the base. Although the combustion device does not occupy the center position, the paths of the flue gas reaching the exhaust port from different positions are not the same in length, and the contact of the flue gas with the bottom of the base also causes large heat loss and large suction loss of the flue gas by the exhaust fan. The suction is insufficient due to the blockage of the base, the flue gas stays for a long time; the flue gas energy recovery steps are few, and the energy utilization is not complete; in the process of heating the water in the water pipe by the flue gas, the water heating area is small, and the heating degree of the pipe surface facing the flue gas flow direction is much higher than that of the opposite pipe surface, resulting in incomplete heating of the pipe; the flue gas passage is short, the residence time in the recovery device is short, and the energy conversion is not complete; the water flowability of the existing device is poor, and most of the flue gas energy can only continuously heat a part of the water source, which makes it difficult to directly contact and heat the water with low temperature, and the energy conversion efficiency is low.

[0004] Therefore, the above problems are improved. SUMMARY

[0005] Therefore, the present application is made in view of the above problems, and the present application solves the problems of large heat loss, long flue gas residence time, incomplete energy utilization, incomplete pipe heating and low energy conversion efficiency of the existing device by heating water vapor by flue gas and stirring water and frying food by water vapor. The present application achieves the above-mentioned purposes through the following technical solutions:

[0006] The utility model provides a high -efficient flue gas recovery boiler, include: support, boiler device, air fryer device, flue gas heat exchange device and water tank, boiler device, air fryer device, flue gas heat exchange device set up respectively on the surface of support, boiler device is connected with air fryer device and flue gas heat exchange device through flue, water tank is connected with air fryer device and flue gas heat exchange device through pipeline, air fryer device includes flue gas exhaust pipe, evaporation water tank, steam exhaust pipe no.

[0007] Preferably, the flue gas heat exchange device further comprises a support shell, a support pipe, a water tank shell and a hot water outlet, the water tank shell is internally provided with the spiral heat dissipation pipe, the top end of the water tank shell is provided with the hot water outlet, the lower portion of the water tank shell is provided with the support pipe, the bottom end of the support pipe is connected with the support shell, and the support pipe is internally provided with a hollow structure.

[0008] Preferably, the stirring device comprises a sliding sheet, a support rod, a rotating rod, a positioning device, a support block and rotating fan blades, the sliding sheet is movably arranged in the support pipe, the top end of the sliding sheet is sequentially connected with the support rod and the positioning device, the bottom end of the sliding sheet is fixed with the rope, the top end of the positioning device is provided with the rotating rod, the outer side of the rotating rod is provided with the support block matched with the rotating rod, the top end of the support block is fixed with the rotating fan blades, and the weights of the two rotating fan blades are different.

[0009] Preferably, the support rod is movably inserted into the water tank shell, and the support rod is provided with an air-tight device at the connection position with the water tank shell.

[0010] Preferably, the two ends of the sliding base plate are slidably arranged on the surface of the support shell, the surface of the support shell is provided with a sliding opening matched with the sliding base plate, and the steam outlet is arranged at the position corresponding to the support pipe at the sliding opening of the support shell.

[0011] Preferably, the air fryer device further comprises a water vapor introduction pipe, a shell, a heat dissipation pipe, a heat dissipation device, and a storage device, the inside of the shell is provided with the storage device, the inside of the shell and outside of the storage device are provided with the heat dissipation device, the lower part of the heat dissipation device is provided with the heat dissipation pipe, and the water vapor introduction pipe penetrates through the shell and is connected with the heat dissipation pipe.

[0012] Preferably, the boiler device comprises an insulation cover, a recovery ring, an exhaust fan, a base, exhaust holes, a control device, a combustion device and a motor, the insulation cover is arranged on the support, the inner wall surface is close to the outer surface of the base, the recovery ring is a hollow structure and the bottom end is close to the combustion device and in contact with the inner wall surface of the base, the exhaust fan is arranged below the recovery ring, the exhaust fan is connected with the motor, the combustion device is arranged on the bottom end of the base, the combustion device is communicated with the control device, and a plurality of exhaust holes are arranged on the annular surface of the bottom of the base.

[0013] Preferably, a dust screen is arranged at the exhaust hole, and the flue gas exhaust pipes are respectively connected with the exhaust holes.

[0014] Preferably, the water vapor exhaust pipe two is a T-shaped structure, one end of the water vapor exhaust pipe two is connected with the bottom side of the evaporation water tank, and the other end of the water vapor exhaust pipe two is respectively connected with the support pipes.

[0015] Beneficial effects

[0016] 1、The exhaust fan of the present application is circular and located below the recovery ring, and the exhaust holes are arranged on the annular surface of the base, under the driving of the motor, the exhaust fan rotates to generate suction force to guide the flue gas at the upper end of the recovery ring to pass through the recovery ring at the same speed, and then the flue gas is discharged under the driving force of the exhaust fan tending to the outside, the whole process is not in contact with the base, the suction force is not collected to the bottom of the base, and the suction force is more balanced, and the exhaust holes arranged on the annular surface of the base are relatively shorter than the bottom path, which avoids the disadvantage that the exhaust holes arranged at the non-central position of the bottom cause the flue gas discharge process path to be long and short, the time is long, and the contact objects are more, and the heat loss is large.

[0017] 2、The three flue gas exhaust pipes of the present application intersect through the evaporation water tank, so that the water in the evaporation water tank evaporates to generate water vapor, the water vapor is discharged into the heat exchange pipe through the water vapor exhaust pipe one for secondary heating to reach the superheated steam degree, and finally the superheated steam enters the heat dissipation pipe through the water vapor introduction pipe, the water is changed from steam to superheated steam under the twice heating of the flue gas, the temperature is fully improved, and the water vapor is heated uniformly as a heat source, which makes the food be fried through the device, and the food is heated uniformly as a whole.

[0018] 3、The setting that the flue gas is heated to the water outside pipeline through two left and right distributed spiral heat dissipation pipes, the pipeline is longer in unit volume, the water heating area is larger, and the heat transfer efficiency is higher, and meanwhile, the flue gas is avoided to heat the water in the pipeline, the heating degree of the pipeline surface facing the flue gas flow direction is far greater than that of the opposite pipeline surface, so that the problem of incomplete heating of the pipeline is solved.

[0019] 4、The setting that the rotary fan blade moves up and down under the joint control of water vapor and sliding chassis makes the water around rotate together in the process of rotating upward, so that the water flow is accelerated, the water of lower temperature can directly contact the spiral heat dissipation pipe for heating, the overall heat absorption effect of the water is better, and the problem that the heating effect of the flue gas can only heat the water around and incompletely heat the water far away is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic diagram of the present application.

[0021] Figure 2 It is the main device bottom view of the present application.

[0022] Figure 3 It is the top view of the boiler device of the present application.

[0023] Figure 4 It is the explosion view of the boiler device of the present application.

[0024] Figure 5 It is the pipeline connection structure schematic diagram of the air fryer device of the present application.

[0025] Figure 6 It is the explosion view of the air fryer device of the present application.

[0026] Figure 7 It is the main device structure schematic diagram of the flue gas heat exchange device of the present application.

[0027] Figure 8 It is the side view of the flue gas heat exchange device of the present application.

[0028] Figure 9 It is the rope device connection structure schematic diagram of the present application.

[0029] Figure 10 It is the structure schematic diagram of the internal communication state of the right end support shell of the flue gas heat exchange device of the present application.

[0030] Figure 11 It is the structure schematic diagram of the moving device of the flue gas heat exchange device of the present application.

[0031] Figure 12 It is the structure schematic diagram of the stirring device of the flue gas heat exchange device of the present application.

[0032] AsFigures 1-10 As shown: 1, support; 2, boiler device; 21, heat preservation cover; 22, recovery ring; 23, exhaust fan; 24, base; 25, exhaust hole; 26, control device; 27, combustion device; 28, motor; 3, air fryer device; 31, flue gas discharge pipe; 32, evaporation water tank; 33, water vapor discharge pipe one; 34, heat exchange pipe; 35, water vapor inlet pipe; 36, shell; 37, heat dissipation pipe; 38, heat dissipation device; 39, storage device; 4, flue gas heat exchange device; 41, flue gas guide pipe; 42, water vapor discharge pipe two; 43, spiral heat dissipation pipe; 44, support shell; 45, support pipe; 46, moving device; 461, sliding rod; 462, sliding chassis; 463, rope; 464, pulley; 465, steam exhaust port; 47, stirring device; 471, sliding sheet; 472, support rod; 473, rotating rod; 474, positioning device; 475, support block; 476, rotating fan blade; 48, water tank shell; 49, hot water discharge port; 491, smoke outlet; 5, water tank. DETAILED DESCRIPTION

[0033] Preferred embodiments of the present application will be described in detail with reference to the attached drawings, which are provided as non-limiting examples so that the application can be realized by a person having ordinary skill in the art to which the present application pertains. However, the present application can be embodied in various different forms, and therefore the present application is not limited to the embodiments described below. In addition, in order to more clearly describe the present application, components not connected to the present application will be omitted from the drawings.

[0034] As Figures 1-2 shown, an efficient flue gas recovery boiler comprises: support 1, boiler device 2, air fryer device 3, flue gas heat exchange device 4, water tank 5;

[0035] The boiler device 2, air fryer device 3, flue gas heat exchange device 4 are respectively arranged in three directions of the support 1, which allows the operator to perform different operations at different positions;

[0036] The flue gas generated in the specific implementation process of the boiler device 2 passes through the air fryer device 3 and the flue gas heat exchange device 4 in turn through the flue;

[0037] The air fryer device 3 can absorb heat from the flue gas to fry food;

[0038] The flue gas heat exchange device 4 is internally provided with a passage for flue gas circulation, and in the specific implementation process, the water inside can absorb the heat energy in the flue gas to be heated into hot water, which is then used for subsequent production;

[0039] The water tank 5 is connected with the air fryer device 3 and the flue gas heat exchange device 4 through pipes, and under the driving of the booster pump inside the water tank 5, the water in the water tank 5 enters the air fryer device 3 and the flue gas heat exchange device 4. When the device does not start to recover the flue gas energy, the water tank 5 replenishes the water consumed in the air fryer device 3 and the flue gas heat exchange device 4 at any time during the process of flue gas energy exchange;

[0040] As shown in Figures 3-4 The boiler device 2 comprises a heat preservation cover 21, a recovery ring 22, an exhaust fan 23, a base 24, an exhaust hole 25, a control device 26, a combustion device 27, and a motor 28.

[0041] The heat preservation cover 21 is arranged on the support 1 and tightly contacts the outer surface of the base 24 to prevent heat loss.

[0042] The recovery ring 22 is a hollow structure and tightly contacts the combustion device 27 at the bottom end and the inner wall surface of the base 24. An annular gap exists in the contact part to allow flue gas to flow in.

[0043] The exhaust fan 23 is arranged in a circular ring shape below the recovery ring 22 and rotates to generate suction under the driving of the motor 28. The suction can guide the flue gas at the upper end of the recovery ring 22 to flow out of the exhaust hole 25 on the annular surface of the base 24. Under the guidance of the circular ring-shaped exhaust fan 23, the flue gas at the upper end of the recovery ring 22 can pass through the recovery ring 22 at a nearly same speed, and then is discharged under the driving force of the exhaust fan 23 tending to the outside. In the whole process, the flue gas does not contact the base 24, the suction is balanced, the moving speed is fast, and the exhaust hole 25 on the annular surface of the base 24 has a shorter path relative to the bottom end, which avoids the disadvantages of long path, long time, and large heat loss caused by the exhaust hole arranged at a non-central position at the bottom end.

[0044] The base 24 is mainly used for supporting the pot body, and the combustion device 27 is arranged at the bottom end of the base 24 and communicates with the control device 26, which enables the stable combustion of natural gas under the control of the control device 26.

[0045] The exhaust hole 25 is arranged on the bottom annular surface of the base 24 and is provided with three exhaust holes 25. A dust screen is arranged at the exhaust hole 25 to guide the flue gas and block the ash from entering the next device.

[0046] As shown in Figures 5-6 The air fryer device 3 comprises a flue gas discharge pipe 31, an evaporation water tank 32, a water vapor discharge pipe 33, a heat exchange pipe 34, a water vapor guide pipe 35, an outer shell 36, a heat dissipation pipe 37, a heat dissipation device 38, and a storage device 39.

[0047] The three flue gas exhaust pipes 31 are respectively connected to three exhaust holes 25, and then converge and pass through the evaporation tank 32. The heat brought by the flue gas causes the water in the evaporation tank 32 to evaporate and produce water vapor. The water vapor in the evaporation tank 32 is discharged into the heat exchange tube 34 through the water vapor exhaust pipe 33. The heat exchange tube 34 is set close to the flue gas exhaust pipe 31, which allows the flue gas in the flue gas exhaust pipe 31 to reheat the water vapor in the heat exchange tube 34 to the level of superheated steam. Finally, the superheated steam enters the heat dissipation tube 37 through the water vapor inlet pipe 35. Under the two heating of the flue gas, the water changes from steam to superheated steam, the temperature is fully increased, and the water vapor heats evenly as a heat source. This makes the food heated evenly throughout when fried.

[0048] The outer casing 36 has a storage device 39 inside, and a heat dissipation device 38 is provided inside the outer casing 36 and outside the storage device 39. A heat dissipation pipe 37 is provided below the heat dissipation device 38. Driven by the heat dissipation device 38, the heat dissipation pipe 37 heats the surrounding air and moves towards the storage device 39 to heat process the food stored therein.

[0049] like Figures 7-10 As shown, the flue gas heat exchange device 4 includes: a flue gas outlet pipe 41, a steam outlet pipe 42, a spiral heat dissipation pipe 43, a supporting shell 44, a supporting pipe 45, a moving device 46, a stirring device 47, a water tank shell 48, and a hot water outlet 49.

[0050] After passing through the evaporation tank 32, the flue gas enters through the flue gas outlet pipe 41 into two spiral heat dissipation pipes 43 arranged on the left and right sides inside the tank shell 48, where it heats the water and then exits from the exhaust port 491 at the top. The flue gas heats the water through the spiral pipe, which is longer per unit volume, resulting in a larger water heating area and higher heat transfer efficiency. This avoids the problem of incomplete heating of the pipe surface facing the flue gas flow, where the heating degree is much greater than that of the opposite pipe surface. The heated water can be discharged through the hot water outlet 49 on the tank shell 48 for subsequent production use.

[0051] The bottom end of the support tube 45 is connected to the support shell 44. The support tube 45 is located below the water tank shell 48. Its interior is a hollow structure and is connected to the interior of the support shell 44.

[0052] Water vapor in the evaporation tank 32 enters the supporting shell 44 through the second water vapor discharge pipe 42. The second water vapor discharge pipe 42 has a T-shaped structure. One end of the second water vapor discharge pipe 42 is connected to the bottom side of the evaporation tank 32, and the other end of the second water vapor discharge pipe 42 is connected to the supporting pipe 45. Then, it passes through the moving device 46 and enters the supporting pipe 45. The supporting pipe 45 does not contact the tank shell 48.

[0053] The moving device 46 comprises a slide rod 461, a slide chassis 462, a rope 463, a pulley 464, a steam outlet 465;

[0054] The slide chassis 462 is matched with the supporting shell 44, both ends of the slide chassis 462 are slidingly arranged on the surface of the supporting shell 44, the surface of the supporting shell 44 is provided with a sliding opening matched with the slide chassis 462, the steam outlet 465 is arranged at the sliding opening of the supporting shell 44 and corresponds to the supporting pipe 45, the pulley 464 is symmetrically arranged on the slide chassis 462, one side edge of one side of the slide chassis 462 is fixed with one end of the rope 463, the other end of the rope 463 is fixed with the slide piece 471 after penetrating through the other side of the slide chassis 462 through the pulley 464, and the rope 463 is arranged below both sides of the slide piece 471, the two ropes 463 are arranged in the same way, and the air-tight device is arranged at the connection between the rope 463 and the slide chassis 462, so that the water vapor cannot be leaked out, the slide chassis 462 can move left and right on the slide rod 461 under the pulling of the rope 463, and the slide rod 461 is arranged on the left and right two supporting shells 44, and the pulley 464 mainly plays a role in maintaining the vertical position of the rope 463;

[0055] The water vapor can flow out from the steam outlet 465, pass through the inside of the supporting shell 44 and enter the supporting pipe 45 under the condition that the slide chassis 462 is not blocked, where the unblocked means that the bottom surface of the slide chassis 462 does not block the steam outlet 465 to make the water vapor enter the water vapor outlet pipe two 42 inside the supporting shell 44, and at the same time, the slide chassis 462 can only completely block one water vapor outlet pipe two 42, at this time, the other water vapor outlet pipe two 42 is in a completely open state, so that the slide chassis 462 can move left and right on the slide rod 461 under the pulling of the rope 463 to correspond to the opening and closing of the left and right two water vapor outlet pipe two 42;

[0056] The stirring device 47 comprises a slide piece 471, a supporting rod 472, a rotating rod 473, a positioning device 474, a supporting block 475 and a rotating fan blade 476, and the stirring device 47 is arranged in the inside of the spiral heat dissipation pipe 43, and the bottom end of the stirring device 47 is provided with the moving device 46;

[0057] The slide piece 471 is movably arranged in the supporting pipe 45, the supporting rod 472 is vertically arranged on the upper surface of the slide piece 471, the supporting rod 472 is movably inserted into the inside of the water tank shell 48, and the air-tight device is arranged at the connection between the supporting rod 472 and the water tank shell 48 to prevent water from overflowing;

[0058] The rotating rod 473 is vertically fixed at one end on the top end wall inside the water tank shell 48, and is in a spiral rod shape; the positioning device 474 is in a hollow cylindrical shape, and is fixed on the top end of the supporting rod 472 through a connecting block, and is sleeved on the outer periphery of the rotating rod 473, and the positioning device 474 does not contact the rotating rod 473;

[0059] The supporting block 475 is rotatably arranged in the positioning device 474, and the end face of the supporting block 475 is provided with a hole matched with the shape of the rotating rod 473, the rotating rod 473 passes through the center hole of the supporting block 475, and the hole is matched with the rotating rod 473, so that the supporting block 475 rotates when moving on the rotating rod 473;

[0060] The rotating fan blade 476 is fixedly arranged on the upper end of the supporting block 475, and a through hole is formed in the center of the rotating fan blade 476 for the rotating rod 473 to pass through, and the through hole of the rotating fan blade 476 does not contact the rotating rod 473; and the rotating fan blade 476 is arranged in the spiral heat dissipation pipe 43, which makes it rotate with the surrounding water during the upward movement, so that the water flow is accelerated, the overall heat absorption effect of the water is better, and the problem that the heating effect of flue gas can only heat the water around it is avoided. The water is not completely heated.

[0061] In the specific implementation process, when the sliding chassis 462 moves and the water vapor discharge pipe two 42 is communicated with the supporting pipe 45 through the supporting shell 44, the water vapor can enter the supporting pipe 45 and push the sliding sheet 471 to move upward, so that the supporting rod 472 and the positioning device 474 move upward together, the positioning device 474 moves upward, which pushes the supporting block 475 and the rotating fan blade 476 located above it to move upward along the rotating rod 473. Since the center hole of the supporting block 475 is matched with the rotating rod 473, the supporting block 475 rotates while moving upward along the rotating rod 473, thereby driving the rotating fan blade 476 to rotate, which makes the rotating fan blade 476 move upward and rotate at the same time;

[0062] The bottom end of the sliding sheet 471 is connected with the sliding chassis 462 through the rope 463, and the sliding chassis 462 will also move to the side of the support pipe 45 during the upward movement of the sliding sheet 471, so that the passage between the support pipe 45 and the water vapor discharge pipe two 42 is gradually closed, and when the sliding sheet 471 moves to the highest point under the action of water vapor, the passage is completely closed, at this time, the passage on the other side will be opened; at the same time, due to the movement of the sliding chassis 462, the sliding sheet 471 on the other side will be driven to move downward under the action of another rope 463, which makes the rotating fan blades 476 on both sides move reciprocatingly in the vertical direction under the action of steam, and the moving directions are opposite; meanwhile, one of the rotating fan blades 476 is lighter and the other is heavier, which makes the passages of the two water vapor discharge pipes two 42 be completely open without steam entering, which avoids the problem that the positioning device 474 on the support rod 472 cannot push the rotating fan blades 476 to move up and down when the opening states of the passages of the two water vapor discharge pipes two 42 are similar and the steam pressure from both sides is similar.

[0063] The working principle of the present application is as follows:

[0064] Firstly, the natural gas starts to burn above the recovery ring 22 after the combustion device 27 is ignited by the control device 26, and most of the energy is provided to the pot, and the remaining energy is converted into flue gas, which moves downward under the suction of the exhaust fan 23 and is mostly resisted by the recovery ring 22 to perform secondary heating on the pot, and a small part passes through the recovery ring 22 and is discharged from the exhaust hole 25 on the base 24 under the driving of the exhaust fan 23, and after being discharged, the flue gas first passes through the evaporative water tank 32 and then enters the spiral heat dissipation pipe 43, and finally is discharged from the smoke outlet 491, the water in the evaporative water tank 32 absorbs the heat in the flue gas to generate water vapor, a part of which enters the heat exchange pipe 34 through the water vapor discharge pipe one 33 to be converted into superheated steam, and then enters the heat dissipation pipe 37 and is heated under the action of the heat dissipation device 38 to fry the food in the storage device 39, and the other part enters the support shell 44 through the water vapor discharge pipe two 42, and is intermittently pushed into the support pipe 45 under the control of the moving device 46 to reciprocatingly move the sliding sheet 471 upward and downward, the sliding of the sliding sheet 471 drives the support rod 472 and the positioning device 474 to move, and the movement of the positioning device 474 drives the support block 475 and the rotating fan blade 476 in contact with the positioning device 474 to move upward and downward to agitate the water around the spiral heat dissipation pipe 43, improve the heating effect of the flue gas in the spiral heat dissipation pipe 43, and the water in the water tank shell 48 is heated by the heat of the flue gas in the spiral heat dissipation pipe 43 to become hot water which is discharged from the hot water discharge outlet 49 for subsequent production.

Claims

1. A high-efficiency flue gas recovery boiler, comprising: Boiler unit (2), air fryer unit (3), flue gas heat exchanger (4); the boiler unit (2) is connected to the air fryer unit (3) and the flue gas heat exchanger (4) through a flue; The boiler device (2) is characterized by comprising: a heat insulation cover (21), a recovery ring (22), an exhaust fan (23), a base (24), a control device (26), and a combustion device (27); the inner wall of the heat insulation cover (21) is in close contact with the outer surface of the base (24), and the bottom of the base (24) is provided with several exhaust holes (25); the bottom end of the recovery ring (22) is close to the combustion device (27) and in contact with the inner wall of the base (24); the exhaust fan (23) is located below the recovery ring (22); the combustion device (27) is located on the bottom end of the base (24) and is connected to the control device (26); The flue gas heat exchange device (4) has an internal passage for flue gas circulation. The flue gas heat exchange device (4) includes: a water tank shell (48); the water tank shell (48) has two spiral heat dissipation pipes (43) inside, and a stirring device (47) is installed inside the spiral heat dissipation pipes (43). A moving device (46) is installed at the bottom of the stirring device (47); a support pipe (45) is installed below the water tank shell (48), and the support pipe (45) is connected to the support shell (44) below it. The support pipe (45) is connected to the second steam exhaust pipe (42); the water tank shell (48) has a flue gas outlet (491) and a hot water outlet (49). The moving device (46) includes: a slide rod (461) and a sliding base (462); the sliding base (462) fits into the supporting shell (44), and the two ends of the sliding base (462) are slidably disposed on the surface of the supporting shell (44). The surface of the supporting shell (44) is provided with a sliding port that is adapted to the sliding base (462), and a steam outlet (465) is provided at the sliding port of the supporting shell (44) and at a position corresponding to the supporting pipe (45). The sliding base (462) is symmetrically provided with pulleys (464). One side of one sliding base (462) is fixed to one end of a rope (463). The other end of the rope (463) passes through the pulley (464) and then passes through the other sliding base (462) and is fixed to the slide plate (471). Both sides of the slide plate (471) are provided with ropes (463). An airtight device is provided at the connection between the rope (463) and the sliding base (462). The slide rod (461) is set on the two supporting shells (44).

2. The high-efficiency flue gas recovery boiler according to claim 1, characterized in that: The air fryer device (3) includes a flue gas exhaust pipe (31) and an evaporation water tank (32). The two ends of the flue gas exhaust pipe (31) are connected to the boiler device (2) and the evaporation water tank (32) respectively. One side of the evaporation water tank (32) is connected to the heat exchange pipe (34) through a steam exhaust pipe (33). The heat exchange pipe (34) is connected to the air fryer device (3).

3. The high-efficiency flue gas recovery boiler according to claim 2, characterized in that: The air fryer device (3) also includes an outer shell (36), inside which is a storage device (39), outside of which is a heat dissipation device (38), and below which is a heat dissipation pipe (37), which is connected to a steam inlet pipe (35).

4. A high-efficiency flue gas recovery boiler according to claim 3, characterized in that: The evaporation tank (32) is connected to the flue gas outlet pipe (41) of the flue gas heat exchange device (4). Water vapor in the evaporation tank (32) enters the supporting shell (44) through the second water vapor outlet pipe (42). The second water vapor outlet pipe (42) has a T-shaped structure. One end of the second water vapor outlet pipe (42) is connected to the bottom side of the evaporation tank (32), and the other end of the second water vapor outlet pipe (42) is connected to the supporting pipe (45).

5. A high-efficiency flue gas recovery boiler according to claim 4, characterized in that: The stirring device (47) includes: a sliding plate (471), a support rod (472), a rotating rod (473), a positioning device (474), a support block (475), and a rotating fan blade (476); the sliding plate (471) is movably disposed inside the support tube (45), and the upper end of the sliding plate (471) is connected to the support rod (472) and the positioning device (474) in sequence; the support rod (472) is movably inserted inside the outer shell (48) of the water tank, and its top end is connected to the positioning device (474).

6. A high-efficiency flue gas recovery boiler according to claim 5, characterized in that: The rotating rod (473) is vertically fixed on the top wall inside the water tank shell (48). The rotating rod (473) has a spiral rod structure. The support block (475) is rotatably set inside the positioning device (474). The end face of the support block (475) is provided with a hole that matches the shape of the rotating rod (473). The hole fits the rotating rod (473). The top of the support block (475) is fixed with a rotating fan blade (476).

7. A high-efficiency flue gas recovery boiler according to claim 6, characterized in that: The rotating fan blade (476) is located inside the spiral heat dissipation tube (43); the bottom end of the sliding plate (471) is connected to the sliding chassis (462) by a rope (463).

8. A high-efficiency flue gas recovery boiler according to claim 7, characterized in that: The boiler device (2), air fryer device (3), and flue gas heat exchanger (4) are respectively mounted on the support (1), and the air fryer device (3) and flue gas heat exchanger (4) are respectively connected to the water tank (5) through pipes.

Images