A boiler high temperature flue gas treatment device

Abstract

The invention discloses a boiler high-temperature flue gas treatment device, which belongs to the field of flue gas treatment. The device comprises a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are respectively connected to the boiler and the flue gas treatment equipment, and the first pipeline and the second pipeline are both connected to a fixed disk, which is installed in the boiler room, and the two fixed disks are both rotatably connected with gears, the two gears are coaxially arranged, and a straight smoke pipe and a spiral smoke pipe are connected between the two gears, and the straight smoke pipe and the spiral smoke pipe are vertically symmetrically arranged; a water tank is arranged at the lower part of the straight smoke pipe, and a nozzle is arranged in the water tank; when the gear of the invention rotates 180 degrees and the straight smoke pipe and the spiral smoke pipe are exchanged, the water tank will also rise synchronously, so that the spiral smoke pipe can be immersed in the water tank, and since the surface area of ​​the spiral smoke pipe is larger than that of the straight smoke pipe, the cooling effect on the high-temperature flue gas can be further improved.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas treatment, and in particular to a boiler high-temperature flue gas treatment device. Background Art

[0002] In industrial production, the treatment of high-temperature flue gas generated by boilers is an important link. Traditional high-temperature flue gas treatment devices often use a fixed pipeline structure to directly transport the high-temperature flue gas generated by boilers to the flue gas treatment equipment through a straight smoke pipe. However, this fixed pipeline structure has some problems, especially when treating high-temperature flue gas, its heat exchange efficiency and cooling effect are limited, and it is difficult to meet the needs of efficient and environmentally friendly flue gas treatment.

[0003] In order to improve the heat exchange efficiency and cooling effect of high-temperature flue gas, the industry has begun to try to improve the flue gas treatment device. One of the improvement schemes is to extend the flow path of the flue gas by increasing the complexity of the pipeline, thereby increasing the heat exchange time. For example, using spiral smoke pipes instead of traditional straight smoke pipes can significantly increase the length of the flue gas flow path and improve the heat exchange efficiency. However, this improvement scheme is not easy to ensure the heat exchange efficiency while achieving flexible scheduling and efficient treatment of flue gas. Summary of the invention

[0004] The purpose of the present invention is to provide a boiler high-temperature flue gas treatment device, which solves the problem of poor flexibility in the prior art in cooling the flue gas.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a boiler high-temperature flue gas treatment device, comprising a first pipeline and a second pipeline, the first pipeline and the second pipeline are respectively connected to the boiler and the flue gas treatment equipment, the first pipeline and the second pipeline are both connected to a fixed disk, the fixed disk is installed in the boiler room, the two fixed disks are rotatably connected to gears, the two gears are coaxially arranged, and a straight smoke pipe and a spiral smoke pipe are connected between the two gears, and the straight smoke pipe and the spiral smoke pipe are vertically symmetrically arranged;

[0006] A water tank is provided at the lower part of the straight smoke pipe, and a nozzle is provided in the water tank. When the gear rotates 180 degrees, the straight smoke pipe and the spiral smoke pipe exchange positions so that high-temperature smoke flows through the spiral smoke pipe, and the water tank moves upward so that the spiral smoke pipe is immersed in the water tank.

[0007] Preferably, sleeves are fixedly connected to both sides of the water tank, inner rods are connected to the two fixed plates, the inner rods slide in the sleeves, and two racks meshing with the two gears are connected to the water tank.

[0008] Preferably, annular grooves are provided on the opposite surfaces of the two fixed plates, and the two annular grooves are respectively connected to the first pipe and the second pipe, and blocks are provided in the annular grooves. During the rotation of the gear, the spiral smoke pipe and the straight smoke pipe are both connected to the annular grooves, and after the gear rotates one hundred and eighty degrees, the block blocks the straight smoke pipe or the spiral smoke pipe.

[0009] Preferably, a valve for controlling the opening of the nozzle is provided on the water tank, and the opening of the valve increases when the temperature of the smoke in the straight smoke pipe increases.

[0010] Preferably, a fixing block is connected to the outer wall of the straight smoke pipe, a bimetallic strip is connected to the fixing block, a sleeve is connected to the end of the bimetallic strip, and the sleeve slides on the straight smoke pipe;

[0011] A rotating plate is connected to the valve stem of the valve, an extension plate is connected to the sleeve ring, an arc block is connected to the end of the extension plate, and the arc block contacts the rotating plate. When the temperature of the straight smoke pipe increases, the bimetallic strip bends to make the sleeve ring slide, so that the arc block moves and drives the valve opening to increase through the rotating plate.

[0012] Preferably, a torsion spring is sleeved on the valve stem, and two ends of the torsion spring are respectively connected to the rotating plate and the valve body of the valve, and when the ring slides, the arc block moves away from the rotating plate, so that the rotating plate rotates to increase the valve opening.

[0013] Preferably, the two gears are coaxially connected with a rotating shaft, the rotating shaft passes through the fixed disk and is connected to the output end of the external driving motor, and when the bimetallic strip is bent to the maximum limit, the external motor drives the rotating shaft to rotate 180 degrees;

[0014] When the rotating shaft rotates 180 degrees so that the straight smoke pipe moves from the lower part to the upper part and is blocked by the blocking block, the arc block is separated from the contact state with the rotating plate, so that the valve is in the maximum opening state.

[0015] Preferably, a thin tube and a thick tube are connected on the bottom of the water tank, and when the water tank is in a downward state, the water inside the water tank is discharged through the thin tube, and when the water tank is in an upward state, the water inside the water tank is discharged through the thick tube.

[0016] Preferably, the thin tube and the thick tube are respectively provided with a first solenoid valve and a second solenoid valve, the inner rod is connected to a pressure sensitive switch, and the sleeve is connected to a pressure plate, and when the water sink moves upward, the pressure plate moves away from the pressure sensitive switch so that the first solenoid valve is closed and the second solenoid valve is opened, and when the water sink moves downward, the pressure plate presses the pressure sensitive switch so that the first solenoid valve is opened and the second solenoid valve is closed.

[0017] Preferably, a third solenoid valve and a fourth solenoid valve are respectively provided on the thin tube and the thick tube, and a water level sensor is provided in the water tank. When the water level in the water tank rises to the position of the water level sensor, the third solenoid valve and / or the fourth solenoid valve is opened.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, after the temperature of flue gas rises, the gears rotate to make the straight smoke tube and the spiral smoke tube exchange positions, so that the flue gas flows from the spiral smoke tube. The time for the flue gas to reach the second pipe when flowing from the spiral smoke tube is longer than that of the straight smoke tube, thereby improving the heat exchange time of the high-temperature flue gas. At the same time, the water tank will also rise, so that after the straight smoke tube and the spiral smoke tube exchange positions, the spiral smoke tube can be immersed in the water tank, and the surface area of ​​the spiral smoke tube is larger than that of the straight smoke tube, thereby improving the cooling effect on the high-temperature flue gas, which is convenient for the later treatment of the flue gas.

[0020] 2. The setting of the annular groove of the present invention enables the smoke to flow to the smoke treatment equipment along the first pipe, the straight smoke pipe, the spiral smoke pipe and the second pipe during the switching process of the straight smoke pipe and the spiral smoke pipe, thereby avoiding excessive pressure increase in the boiler part caused by the obstruction of smoke flow during the switching process. After the positions of the straight smoke pipe and the spiral smoke pipe are switched, the two ends of the upper smoke pipe are blocked by the block, so that no smoke flows in the upper smoke pipe, ensuring that the smoke can flow along the lower smoke pipe.

[0021] 3. When the water tank is in the lower stroke position of the present invention, a water pump can be arranged in the water tank, and the water in the water tank is pumped out again through the nozzle by the water pump to achieve the effect of recycling. When the water tank is in the upper stroke position, the water pump in the water tank stops running, the water spraying amount of the nozzle increases, and the water discharge amount through the thick pipe also increases, so that the water in the water tank after heat exchange with the high-temperature flue gas flowing through the spiral smoke pipe can be discharged in time to ensure the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the present invention after the positions of the straight smoke pipe and the spiral smoke pipe are swapped;

[0024] Figure 3 is a cross-sectional view of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the annular groove of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the gear of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the nozzle of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the bimetallic strip of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the sleeve of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the transfer plate of the present invention;

[0031] Fig.10 It is a structural schematic diagram of the pressure sensitive switch of the present invention.

[0032] In the figure: 1. fixed plate; 11. first pipe; 12. second pipe; 13. gear; 14. straight smoke pipe; 15. spiral smoke pipe; 16. rotating shaft; 17. annular groove; 18. blocking block; 2. fixed block; 21. bimetallic strip; 22. collar; 23. extension plate; 24. arc block; 25. rotating plate; 26. valve stem; 27. torsion spring; 28. nozzle; 3. water tank; 31. rack; 32. sleeve; 33. inner rod; 34. pressure sensitive switch; 35. pressure plate; 36. thin tube; 361. first solenoid valve; 362. third solenoid valve; 37. thick tube; 371. second solenoid valve; 372. fourth solenoid valve; 38. water level sensor. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Reference Figure 1 - Fig.10The present embodiment provides a technical solution: a boiler high-temperature flue gas treatment device, comprising a first pipe 11 and a second pipe 12, the first pipe 11 and the second pipe 12 are respectively connected to the boiler and the flue gas treatment equipment, the first pipe 11 and the second pipe 12 are both connected to a fixed plate 1, the fixed plate 1 is installed in the boiler room, the two fixed plates 1 are rotatably connected to a gear 13, the two gears 13 are coaxially arranged, and a straight smoke pipe 14 and a spiral smoke pipe 15 are connected between the two gears 13, the straight smoke pipe 14 and the spiral smoke pipe 15 are vertically symmetrically arranged; a water tank 3 is arranged at the lower part of the straight smoke pipe 14, and a nozzle 28 is arranged in the water tank 3, when the gear 13 rotates 180 degrees, the straight smoke pipe 14 and the spiral smoke pipe 15 exchange positions, so that the high-temperature smoke flows through the spiral smoke pipe 15, and the water tank 3 moves up, so that the spiral smoke pipe 15 is immersed in the water tank 3.

[0035] The fixing plate 1 is installed in the boiler room so that the whole device is close to the flue gas treatment equipment. The first pipe 11 is connected to the smoke pipe close to the boiler, and the second pipe 12 is connected to the smoke pipe close to the flue gas treatment equipment. When the boiler flue gas is not high, the straight smoke pipe 14 is connected to the first pipe 11 and the second pipe 12. At this time, the flue gas flows through the straight smoke pipe 14. When the flue gas temperature rises, the gear 13 rotates to make the straight smoke pipe 14 and the spiral smoke pipe 15 exchange positions, so that the flue gas flows from the spiral smoke pipe 15. When the flue gas flows from the spiral smoke pipe 15, the time it takes to reach the second pipe 12 is longer than that of the straight smoke pipe 14, thereby improving the heat exchange time of the high-temperature flue gas. At the same time, the water tank 3 will also rise, so that after the straight smoke pipe 14 and the spiral smoke pipe 15 exchange positions, the spiral smoke pipe 15 can be immersed in the water tank 3, and the surface area of ​​the spiral smoke pipe 15 is larger than that of the straight smoke pipe 14, thereby improving the cooling effect on the high-temperature flue gas, which is convenient for the later treatment of the flue gas.

[0036] Sleeves 32 are fixedly connected to both sides of the water tank 3 , inner rods 33 are connected to the two fixed plates 1 , and the inner rods 33 slide in the sleeves 32 . Two racks 31 meshing with the two gears 13 are connected to the water tank 3 .

[0037] The inner rod 33 slides in the sleeve 32, so that the water tank 3 can only move along the length direction of the inner rod 33, so that when the gear 13 rotates, the water tank 3 can be driven to rise and fall stably.

[0038] Annular grooves 17 are provided on the opposite surfaces of the two fixed plates 1. The two annular grooves 17 are respectively connected to the first pipe 11 and the second pipe 12. Blocks 18 are provided in the annular grooves 17. During the rotation of the gear 13, the spiral smoke tube 15 and the straight smoke tube 14 are both connected to the annular grooves 17. Moreover, after the gear 13 rotates one hundred and eighty degrees, the block 18 blocks the straight smoke tube 14 or the spiral smoke tube 15.

[0039] The setting of the annular groove 17 enables the flue gas to flow to the flue gas treatment equipment along the first pipe 11, the straight smoke pipe 14, the spiral smoke pipe 15 and the second pipe 12 during the switching process of the straight smoke pipe 14 and the spiral smoke pipe 15, thereby avoiding excessive pressure increase in the boiler part caused by obstruction of the flow of smoke during the switching process. After the positions of the straight smoke pipe 14 and the spiral smoke pipe 15 are switched, the two ends of the upper smoke pipe are blocked by the block 18, so that no smoke flows in the upper smoke pipe, ensuring that the smoke can flow along the lower smoke pipe.

[0040] A valve for controlling the opening of the nozzle 28 is provided on the water tank 3. When the temperature of the smoke in the straight smoke pipe 14 increases, the opening of the valve increases.

[0041] In the initial state, the flue gas flows through the inside of the straight smoke pipe 14, and when the temperature of the flue gas rises but not by much, the valve switches from a closed state to an open state, so that the nozzle 28 sprays water into the straight smoke pipe 14 to cool the flue gas in the straight smoke pipe 14, and the higher the temperature in the straight smoke pipe 14, the greater the opening of the valve, so that the high-temperature flue gas is cooled in time.

[0042] A fixing block 2 is connected to the outer wall of the straight smoke pipe 14, a bimetallic strip 21 is connected to the fixing block 2, a collar 22 is connected to the end of the bimetallic strip 21, and the collar 22 slides on the straight smoke pipe 14; a rotating plate 25 is connected to the valve stem 26 of the valve, an extension plate 23 is connected to the collar 22, an arc block 24 is connected to the end of the extension plate 23, and the arc block 24 contacts the rotating plate 25. When the temperature of the straight smoke pipe 14 rises, the bimetallic strip 21 bends to make the collar 22 slide, so that the arc block 24 moves and drives the valve opening to increase through the rotating plate 25; a torsion spring 27 is sleeved on the valve stem 26, and the two ends of the torsion spring 27 are respectively connected to the rotating plate 25 and the valve body of the valve. When the collar 22 slides, the arc block 24 moves away from the rotating plate 25, so that the rotating plate 25 rotates to increase the valve opening.

[0043] Specifically, the valve opening control principle is that when the temperature of the straight smoke pipe 14 rises, the high temperature is transmitted to the bimetallic strip 21 to bend the bimetallic strip 21, thereby reducing the distance between the two end points of the bimetallic strip 21. At this time, the collar 22 is close to the fixed block 2, so that the arc block 24 is away from the rotating plate 25, and then the rotating plate 25 is swung toward the arc block 24 by the force of the torsion spring 27 to increase the valve opening;

[0044] In addition, the arc block 24 can also be set on the other side of the rotating plate 25, so that when the ring 22 is close to the fixed block 2, the arc block 24 can push the rotating plate 25 to swing. If it is set in this way, a magnetic attraction force is generated between the arc block 24 and the rotating plate 25 by setting a magnet, so that the torsion spring 27 gradually releases the torque as the arc block 24 moves, and after the arc block 24 breaks away from the contact with the rotating plate 25, the torque of the torsion spring 27 is completely released to make the valve stem 26 rotate, and the valve opening becomes maximum.

[0045] The two gears 13 are coaxially connected with a rotating shaft 16, which passes through the fixed disk 1 and is connected to the output end of the external driving motor. When the bimetallic strip 21 is bent to the maximum limit, the external motor drives the rotating shaft 16 to rotate 180 degrees; when the rotating shaft 16 rotates 180 degrees so that the straight smoke pipe 14 moves from the lower part to the upper part and is blocked by the blocking block 18, the arc block 24 is out of contact with the rotating plate 25, so that the valve is in the maximum opening state.

[0046] The external motor drives the rotating shaft 16 to rotate the gear 13. The start of the external motor is controlled by the temperature sensor set in the first pipe 11. When the temperature in the first pipe 11 is high, the external motor drives the rotating shaft 16 to rotate 180 degrees forward, and vice versa. The condition for the valve opening to become the maximum is that the arc block 24 is separated from the rotating plate 25 so that the torsion of the torsion spring 27 is completely released. The specific implementation process is that the gear 13 rotates so that the straight smoke pipe 14 initially at the lower part moves to the upper part, and at this time the arc block 24 can be separated from the contact with the rotating plate 25.

[0047] In addition, in order to avoid interference between the straight smoke pipe 14 and the spiral smoke pipe 15 when they are switched, the width of the water tank 3 can be widened appropriately.

[0048] A thin tube 36 and a thick tube 37 are connected at the bottom of the water tank 3. When the water tank 3 is in a downward state, the water inside the water tank 3 is discharged through the thin tube 36. When the water tank 3 is in an upward state, the water inside the water tank 3 is discharged through the thick tube 37.

[0049] Since the valve is not fully opened when the water tank 3 is in the lower state of the stroke, the water spraying amount of the nozzle 28 is small at this time, so that the water in the water tank 3 is discharged through the thin tube 36 at this time. On the contrary, when the water tank 3 is in the upper part of its stroke, the water inside it is discharged through the thick tube 37. After such arrangement, when the water tank 3 is in the lower position of the stroke, a water pump can be arranged in the water tank 3. This water pump and the external water pump that supplies water to the nozzle 28 operate simultaneously, and the water in the water tank 3 is pumped out through the nozzle 28 again through the water pump to achieve the effect of recycling. When the water tank 3 is in the upper position of the stroke, the water pump in the water tank 3 stops running, and the external water pump continues to run, the water spraying amount of the nozzle 28 increases, and the water discharge through the thick tube 37 also increases, so that the water in the water tank 3 after heat exchange with the high-temperature flue gas flowing through the spiral smoke pipe 15 is discharged in time to ensure the cooling effect.

[0050] The first solenoid valve 361 and the second solenoid valve 371 are respectively provided on the thin tube 36 and the thick tube 37, the inner rod 33 is connected to the pressure sensitive switch 34, and the sleeve 32 is connected to the pressure plate 35. When the water tank 3 moves up, the pressure plate 35 moves away from the pressure sensitive switch 34 so that the first solenoid valve 361 is closed and the second solenoid valve 371 is opened; and when the water tank 3 moves down, the pressure plate 35 presses the pressure sensitive switch 34 so that the first solenoid valve 361 is opened and the second solenoid valve 371 is closed.

[0051] When the water tank 3 is in the lower position of the stroke, the pressure plate 35 presses the pressure sensitive switch 34 to open the first solenoid valve 361 and close the second solenoid valve 371. Conversely, the pressure plate 35 moves away from the pressure sensitive switch 34 to close the first solenoid valve 361 and open the second solenoid valve 371, thereby achieving the goal of closing the thick tube 37 and opening the thin tube 36 after the water tank 3 moves downward, and opening the thick tube 37 and closing the thin tube 36 after the water tank 3 moves upward.

[0052] The third solenoid valve 362 and the fourth solenoid valve 372 are respectively provided on the thin tube 36 and the thick tube 37. A water level sensor 38 is provided in the water tank 3. When the water level in the water tank 3 rises to the position of the water level sensor 38, the third solenoid valve 362 and / or the fourth solenoid valve 372 is opened.

[0053] The cooperation between the water level sensor 38 and the third solenoid valve 362 and the fourth solenoid valve 372 ensures that the water in the water tank 3 will be discharged only when it reaches the preset height of the water level sensor 38. Since only the thick tube 37 or the thin tube 36 is opened after the water tank 3 moves up or down, the water level in the water tank 3 will only be discharged through the thick tube 37 or the thin tube 36 after rising.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A boiler high-temperature flue gas treatment device, comprising a first pipe (11) and a second pipe (12), wherein the first pipe (11) and the second pipe (12) are connected to a boiler and a flue gas treatment device, respectively, and characterized in that: The first pipe (11) and the second pipe (12) are both connected to a fixing plate (1), the fixing plate (1) being installed in a boiler room, the two fixing plates (1) being rotatably connected to a gear (13), the two gears (13) being coaxially arranged, and a straight smoke pipe (14) and a spiral smoke pipe (15) being connected between the two gears (13), the straight smoke pipe (14) and the spiral smoke pipe (15) being arranged vertically symmetrically; A water tank (3) is provided at the bottom of the straight smoke pipe (14), and a nozzle (28) is provided in the water tank (3); when the gear (13) rotates 180 degrees, the straight smoke pipe (14) and the spiral smoke pipe (15) are swapped, so that high-temperature smoke flows through the spiral smoke pipe (15), and the water tank (3) moves upward, so that the spiral smoke pipe (15) is immersed in the water tank (3); Sleeves (32) are fixedly connected to both sides of the water tank (3), inner rods (33) are connected to the two fixed plates (1), the inner rods (33) slide in the sleeves (32), and two racks (31) meshing with the two gears (13) are connected to the water tank (3); An annular groove (17) is provided on opposite surfaces of the two fixing plates (1), the two annular grooves (17) are respectively connected to the first pipe (11) and the second pipe (12), a blocking block (18) is provided in the annular groove (17), and when the gear (13) rotates, the spiral smoke pipe (15) and the straight smoke pipe (14) are both connected to the annular groove (17), and when the gear (13) rotates 180 degrees, the blocking block (18) blocks the straight smoke pipe (14) or the spiral smoke pipe (15); The water tank (3) is provided with a valve for controlling the opening of the nozzle (28), and the opening of the valve increases when the temperature of the smoke in the straight smoke pipe (14) increases; A fixing block (2) is connected to the outer wall of the straight smoke pipe (14), a bimetallic strip (21) is connected to the fixing block (2), a sleeve ring (22) is connected to the end of the bimetallic strip (21), and the sleeve ring (22) slides on the straight smoke pipe (14); A rotating plate (25) is connected to the valve stem (26) of the valve, an extension plate (23) is connected to the sleeve ring (22), an arc block (24) is connected to the end of the extension plate (23), and the arc block (24) contacts the rotating plate (25). When the temperature of the straight smoke pipe (14) rises, the bimetallic strip (21) bends to make the sleeve ring (22) slide, so that the arc block (24) moves and drives the valve opening to increase through the rotating plate (25).

2. The boiler high temperature flue gas treatment device according to claim 1, characterized in that: A torsion spring (27) is sleeved on the valve stem (26), and two ends of the torsion spring (27) are respectively connected to the rotating plate (25) and the valve body of the valve. When the collar (22) slides, the arc block (24) moves away from the rotating plate (25), so that the rotating plate (25) rotates to increase the opening of the valve.

3. The boiler high temperature flue gas treatment device according to claim 2, characterized in that: The two gears (13) are coaxially connected to a rotating shaft (16), the rotating shaft (16) passes through the fixed disk (1) and is connected to the output end of an external drive motor, and when the bimetallic strip (21) is bent to the maximum limit, the external motor drives the rotating shaft (16) to rotate 180 degrees; When the rotating shaft (16) rotates 180 degrees so that the straight smoke pipe (14) moves from the lower part to the upper part and is blocked by the blocking block (18), the arc block (24) is separated from the contact state with the rotating plate (25), so that the valve is in the maximum opening state.

4. The boiler high temperature flue gas treatment device according to claim 3, characterized in that: A thin tube (36) and a thick tube (37) are connected at the bottom of the water trough (3); when the water trough (3) is in a downwardly moved state, water inside the water trough (3) is discharged through the thin tube (36); and when the water trough (3) is in an upwardly moved state, water inside the water trough (3) is discharged through the thick tube (37).

5. The boiler high temperature flue gas treatment device according to claim 4, characterized in that: The thin tube (36) and the thick tube (37) are respectively provided with a first solenoid valve (361) and a second solenoid valve (371); the inner rod (33) is connected to a pressure-sensitive switch (34); the sleeve (32) is connected to a pressure plate (35); when the water tank (3) moves upward, the pressure plate (35) moves away from the pressure-sensitive switch (34) so ​​that the first solenoid valve (361) is closed and the second solenoid valve (371) is opened; and when the water tank (3) moves downward, the pressure plate (35) presses the pressure-sensitive switch (34) so ​​that the first solenoid valve (361) is opened and the second solenoid valve (371) is closed.

6. The boiler high temperature flue gas treatment device according to claim 5, characterized in that: The thin tube (36) and the thick tube (37) are respectively provided with a third solenoid valve (362) and a fourth solenoid valve (372); a water level sensor (38) is provided in the water tank (3); when the water level in the water tank (3) rises to the position of the water level sensor (38), the third solenoid valve (362) and / or the fourth solenoid valve (372) are opened.

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