Hot flue gas treatment device for energy-saving industrial furnace

Abstract

The invention provides an energy-saving type hot flue gas treatment device for an industrial furnace, and relates to the technical field of hot flue gas treatment, the energy-saving type hot flue gas treatment device comprises a treatment box, a treatment cavity is formed in the treatment box, a gas inlet pipeline communicated with the treatment cavity is mounted at the top of the treatment box, and a gas outlet pipeline communicated with the treatment cavity is mounted at the bottom of the treatment box. According to the energy-saving type hot flue gas treatment device for the industrial furnace, through the arrangement of the treatment box, the gas inlet pipeline, the gas outlet pipeline, the exchange box, the partition piece, the liquid inlet pipe, the water outlet pipe, the guide structure, the knocking structure, the filtering structure and the anti-blocking cleaning structure, the volume in the replacement cavity can be adjusted according to the temperature of flue gas discharged by the industrial furnace; according to the heat exchanger, the water liquid amount for heat exchange is changed, the heat exchange efficiency is ensured, heat in flue gas is recycled, particles adhered to the inner wall of the heat exchange pipe can be knocked and vibrated during heat recovery, adhered objects are vibrated down, and the heat recovery efficiency and smooth flue gas flowing are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of hot flue gas treatment, and in particular to an energy-saving hot flue gas treatment device for an industrial furnace. Background Art

[0002] The energy-saving hot flue gas treatment device for industrial furnaces is a device specially used to treat the hot flue gas generated by industrial furnaces. It aims to improve energy utilization efficiency, reduce pollutant emissions, and reduce production costs. The temperature of the flue gas discharged by the industrial furnace is relatively high, and by recovering the waste heat in the flue gas, it can achieve energy saving of 15% to 25%.

[0003] In order to better recover the heat in the flue gas, it is usually necessary to recover the heat in the hot flue gas just discharged in order to reduce the efficiency of heat recovery. However, the hot flue gas just discharged will contain a large amount of particulate matter. A large amount of particulate matter adheres to the inner wall of the flue gas duct, which will affect the waste heat recovery in the flue gas and may also cause the flue gas duct to be blocked, affecting the effect of flue gas treatment. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes an energy-saving hot flue gas treatment device for an industrial furnace.

[0005] The present invention provides an energy-saving hot flue gas treatment device for an industrial furnace, comprising a treatment box, a treatment chamber is provided in the treatment box, an air inlet pipe communicating with the treatment chamber is installed on the top of the treatment box, and an air outlet pipe communicating with the treatment chamber is installed on the bottom of the treatment box;

[0006] An exchange box is fixedly installed in the processing chamber of the processing box, and the exchange box can divide the processing chamber into an air intake chamber and a filter chamber arranged vertically. The exchange box is located between the air intake chamber and the filter chamber. A heat exchange chamber is opened in the exchange box, and a heat exchange tube is slidably penetrated on the exchange box. Both ends of the heat exchange tube are respectively connected with the air intake chamber and the filter chamber. A partition is slidably installed in the exchange box, and the partition can divide the heat exchange chamber in the exchange box into a pressure regulating chamber and a displacement chamber arranged vertically. A liquid inlet pipe connected with the displacement chamber is installed on one side of the processing box, and a water outlet pipe connected with the displacement chamber is installed on the other side of the processing box. The heat exchange tube passes through the partition, and the partition can drive the heat exchange tube to slide in the heat exchange chamber. A guide structure is installed on the exchange box, and when the heat exchange tube is raised or lowered in the exchange box, the guide structure can guide the heat exchange tube to rotate spirally;

[0007] The exchange box is equipped with a knocking mechanism, which can drive the knocking mechanism to knock the outer periphery of the heat exchange tube when the partition is raised or lowered in the exchange box;

[0008] A filter structure is installed in the filter cavity, and an anti-blocking cleaning structure is also installed in the filter cavity. The anti-blocking cleaning structure is used to clean adhesions on the filter structure.

[0009] Preferably, the partition comprises a heat exchange tube; the heat exchange tube has a density less than that of water, and the heat exchange tube is slidably installed in the heat exchange cavity;

[0010] A reset component is installed in the exchange box, and the reset component is used to drive the heat exchange tube to slide and reset in the heat exchange cavity.

[0011] Preferably, the reset assembly includes a connecting pipe, a limit plate and a reset spring; an air inlet connected to the pressure regulating chamber is opened on the top of the exchange box, the connecting pipe is fixedly installed in the air inlet, the top of the heat exchange tube is slidably inserted in the connecting pipe, the outer diameter of the heat exchange tube is the same as the inner diameter of the connecting tube, the limit plate is sleeved on the outer periphery of the connecting pipe, the reset spring is sleeved on the outer periphery of the heat exchange tube, and the two ends of the reset spring are respectively against the limit plate and the heat exchange tube.

[0012] Preferably, the guide structure includes a guide tube and a sliding shaft; an air outlet connected to the displacement chamber is provided at the bottom of the exchange box, the guide tube is fixedly installed in the air outlet, the bottom end of the heat exchange tube is slidably inserted in the guide tube, the outer diameter of the heat exchange tube is the same as the inner diameter of the guide tube, the sliding shaft is fixedly connected to the outer periphery of the heat exchange tube, and the inner wall of the guide tube is provided with a spiral groove that slides with the sliding shaft.

[0013] Preferably, the knocking mechanism comprises a side frame, an end face gear, a knocking block and a driving assembly; the side frame is fixedly installed in the exchange box, a movable groove is opened on the side frame, the end face gear is rotatably installed in the movable groove, the knocking block is installed on the outer periphery of the end face gear, and the driving assembly is used to drive the end face gear to rotate in the movable groove;

[0014] When the end face gear rotates, it can drive the knocking block to rotate and make the knocking block hit the outer periphery of the heat exchange tube.

[0015] Preferably, the driving assembly includes a transmission gear, a driving gear and a driving rack; the transmission gear is rotatably installed in the side frame, the transmission gear is meshed with the end gear, the driving gear is rotatably installed in the side frame, one end of the driving rack is fixedly connected to the heat exchange tube, and the driving rack is meshed with the driving gear.

[0016] Preferably, the driving assembly further comprises a spring; a plurality of teeth are arranged on one side of the driving gear close to the transmission gear, the plurality of teeth are arranged in an arc shape, and the teeth are meshed with the transmission gear;

[0017] The end face gear is rotatably mounted in the side frame via a rotating shaft, a rotating groove is provided in the side frame, a part of the rotating shaft of the end face gear is located in the rotating groove, the outer ring end of the spring is fixedly connected to the inner wall of the rotating groove, and the inner ring end of the spring is fixedly connected to the rotating shaft of the end face gear;

[0018] An elastic rod is connected between the end face gear and the knocking block.

[0019] Preferably, the filtering structure comprises a mounting plate and a mesh filter cartridge; the mounting plate is fixedly mounted in the filter chamber, an air passage is penetrated through the mounting plate, and the mesh filter cartridge is mounted in the air passage.

[0020] Preferably, the anti-blocking and cleaning structure includes a mounting rod, an elastic rod and a shift block; the mounting rod is fixedly connected to the bottom surface of the exchange box, one end of the elastic rod is fixedly connected to the mounting rod, the middle part of the mesh filter cartridge is suspended on the elastic rod, the shift block is fixedly connected to the bottom end of the driving rack, and the shift block can shift the elastic rod.

[0021] An energy-saving hot flue gas treatment device for an industrial furnace proposed by the present invention has the following beneficial effects: through the arrangement of a treatment box, an air inlet pipe, an air outlet pipe, an exchange box, a partition, a liquid inlet pipe, a water outlet pipe, a guide structure, a knocking structure, a filtering structure and an anti-blocking cleaning structure, the volume in the displacement chamber can be adjusted according to the temperature of the flue gas discharged from the industrial furnace, the amount of water for heat exchange can be changed, the heat exchange efficiency can be ensured, and the heat in the flue gas can be recovered and utilized; when recovering heat, the particulate matter adhered to the inner wall of the heat exchange tube can also be knocked and vibrated to shake off the adhered matter, thereby ensuring the efficiency of heat recovery and the smooth flow of flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an energy-saving hot flue gas treatment device for an industrial furnace proposed by the present invention;

[0023] Figure 2 A side cross-sectional view of an energy-saving hot flue gas treatment device for an industrial furnace proposed by the present invention;

[0024] Figure 3 A cross-sectional view of an exchange box in an energy-saving hot flue gas treatment device for an industrial furnace proposed by the present invention;

[0025] Figure 4 A cross-sectional view of a single heat exchange tube in an exchange box in an energy-saving hot flue gas treatment device for an industrial furnace proposed by the present invention;

[0026] Figure 5 The invention provides an energy-saving hot flue gas treatment device for industrial furnaces. Figure 3 A in the enlarged view;

[0027] Figure 6 A cross-sectional view of a knocking mechanism in a side frame of an energy-saving hot flue gas treatment device for an industrial furnace proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of a heat exchange tube in an energy-saving hot flue gas treatment device for an industrial furnace proposed by the present invention;

[0029] Figure 8 A schematic side view of an end face gear and a knocking block in an energy-saving hot flue gas treatment device for an industrial furnace proposed by the present invention;

[0030] Fig. 9 This is a schematic diagram of the end of a driving gear in an energy-saving hot flue gas treatment device for an industrial furnace proposed by the present invention;

[0031] Fig.10 This is a schematic structural diagram of a driving rack and a shifting block in an energy-saving hot flue gas treatment device for an industrial furnace proposed by the present invention.

[0032] In the figure: 1. treatment box; 2. air inlet pipe; 3. air outlet pipe; 4. exchange box; 5. liquid inlet pipe; 6. water outlet pipe; 7. heat exchange pipe; 8. insulation floating plate; 9. connecting pipe; 10. limit plate; 11. reset spring; 12. guide pipe; 13. sliding shaft; 14. side frame; 15. end gear; 16. knocking block; 17. transmission gear; 18. driving gear; 19. driving rack; 20. clockwork spring; 21. elastic rod; 22. mounting plate; 23. mesh filter cartridge; 24. mounting rod; 25. elastic rod; 26. shifting block. DETAILED DESCRIPTION

[0033] Reference Figure 1-Figure 10 The present invention proposes an energy-saving hot flue gas treatment device for an industrial furnace, comprising a treatment box 1, which is a heat-insulating box body. A treatment chamber is provided in the treatment box 1, an air inlet pipe 2 connected to the treatment chamber is installed on the top of the treatment box 1, and an air outlet pipe 3 connected to the treatment chamber is installed on the bottom of the treatment box 1. When the hot flue gas in the industrial furnace is discharged, the hot flue gas is injected into the treatment box 1 from the air inlet pipe 2, and the hot flue gas is treated in the treatment box 1 and then discharged from the air outlet pipe 3, and the discharged flue gas is then subjected to subsequent purification treatment.

[0034] like Figure 2 , Figure 3 and Figure 4As shown in the figure, an exchange box 4 is fixedly installed in the processing chamber of the processing box 1. The exchange box 4 can divide the processing chamber into an air intake chamber and a filter chamber arranged up and down. The exchange box 4 is located between the air intake chamber and the filter chamber. A heat exchange chamber is opened in the exchange box 4. A heat exchange tube 7 is slidably penetrated on the exchange box 4. The two ends of the heat exchange tube 7 are respectively connected to the air intake chamber and the filter chamber. A partition is slidably installed in the exchange box 4. The partition can divide the heat exchange chamber in the exchange box 4 into a pressure regulating chamber and a displacement chamber arranged up and down. An exhaust pipe is installed in the pressure regulating chamber to exhaust gas, thereby ensuring the pressure regulating chamber. The pressure in the pressure chamber ensures the sliding of the partition. A liquid inlet pipe 5 connected to the displacement chamber is installed on one side of the processing box 1, and a water outlet pipe 6 connected to the displacement chamber is installed on the other side of the processing box 1. The heat exchange tube 7 runs through the partition, and the partition can drive the heat exchange tube 7 to slide in the heat exchange chamber. A guide structure is installed on the exchange box 4. When the heat exchange tube 7 rises and falls in the exchange box 4, the guide structure can guide the heat exchange tube 7 to rotate spirally. When heat recovery is performed, assuming that the temperature of the hot flue gas rises, the hot flue gas is passed into the processing box 1, and the hot flue gas passes through the heat exchange tube 7, and at the same time The water is injected into the displacement chamber in the exchange box 4 through the liquid inlet pipe 5, and the heat of the flue gas in the heat exchange tube 7 is heat-exchanged with the water in the placement chamber to heat the water in the placement chamber. In practice, the temperature of the flue gas discharged from the industrial furnace will also change. The flow rate of the water entering the displacement chamber through the liquid inlet pipe 5 can be increased, and the water flow rate of the water outlet pipe 6 can be controlled to increase the water pressure in the displacement chamber. After the water pressure increases, the water will exert pressure on the partition, causing the partition to slide in the heat exchanger, and the space of the displacement chamber will be enlarged. The length of the heat exchange tube 7 in the displacement chamber is Increase, increase the contact area of ​​heat exchange, so that more volume of water can be used for heat exchange, improve the heat exchange effect, reduce the loss of heat in the flue gas due to unreplaced, and can adjust the volume of the replacement chamber according to actual conditions to ensure the heat exchange efficiency. When the heat exchange tube 7 is lifted and lowered, the heat exchange tube 7 makes a spiral rotation. According to the different flow conditions of the flue gas in the heat exchange tube 7, the scouring of the inner wall of the heat exchange tube 7 by the flue gas flow is changed, which can play a certain scouring role and reduce the adhesion of particulate matter, thereby ensuring the smooth flow of the heat exchange tube 7 and reducing the blockage of flue gas.

[0035] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown in the figure, a knocking mechanism is installed on the exchange box 4. When the partition is raised or lowered in the exchange box 4, the knocking mechanism can be driven to knock on the outer periphery of the heat exchange tube 7. After long-term use, some particles will adhere to the inner wall of the heat exchange tube 7. The knocking mechanism can be used to knock on the outer periphery of the heat exchange tube 7 to make the heat exchange tube 7 vibrate. The adhesion on the inner wall of the heat exchange tube 7 can be shaken off by the vibration, which can clean the heat exchange tube 7 and reduce the blockage of the heat exchange tube 7.

[0036] like Figure 2 As shown in , a filter structure is installed in the filter cavity, and an anti-blocking cleaning structure is also installed in the filter cavity. The anti-blocking cleaning structure is used to clean the adhesion on the filter structure. In order to better recover the heat in the flue gas discharged from the industrial furnace, the flue gas just discharged from the industrial furnace is usually heat recovered. Therefore, the discharged flue gas will contain a large amount of particulate matter. In order to treat the flue gas, the flue gas needs to be filtered and then purified. The particulate matter in the flue gas is filtered by the filter structure, and the anti-blocking cleaning structure cleans the filter structure to reduce blockage and ensure smooth transportation of the flue gas.

[0037] like Figure 2 , Figure 3 and Figure 4 As shown in the figure, the partition includes a heat-insulating floating plate 8; the density of the heat-insulating floating plate 8 is less than that of water. After the water enters the displacement chamber, it can better drive the heat-insulating floating plate 8 to slide in the heat exchange chamber. The heat-insulating floating plate 8 is slidably installed in the heat exchange chamber, and a reset component is installed in the exchange box 4. The reset component is used to drive the heat-insulating floating plate 8 to slide and reset in the heat exchange chamber, and the reset component controls the heat-insulating floating plate 8 to slide and reset.

[0038] like Figure 2 , Figure 3 and Figure 4 As shown in the figure, the reset assembly includes a connecting pipe 9, a limit plate 10 and a reset spring 11; an air inlet connected to the pressure regulating chamber is opened on the top of the exchange box 4, and the connecting pipe 9 is fixedly installed in the air inlet. The top of the heat exchange tube 7 is slidably inserted in the connecting pipe 9. The outer diameter of the heat exchange tube 7 is the same as the inner diameter of the connecting pipe 9. The limit plate 10 is sleeved on the outer periphery of the connecting pipe 9, and the reset spring 11 is sleeved on the outer periphery of the heat exchange tube 7, and the two ends of the reset spring 11 are respectively against the limit plate 10 and the heat insulation floating plate 8. When the heat insulation floating plate 8 slides, the compression state of the reset spring 11 will also change accordingly. The rebound effect of the reset spring 11 drives the heat insulation floating plate 8 to slide and reset. In addition, when the heat exchange tube 7 slides with the heat insulation floating plate 8, the heat exchange tube 7 can scrape the inner wall of the connecting pipe 9, thereby ensuring the cleanliness of the inner wall of the connecting pipe 9.

[0039] like Figure 3 , Figure 4 and Figure 7As shown in the figure, the guide structure includes a guide tube 12 and a sliding shaft 13; an air outlet connected to the displacement chamber is provided at the bottom of the exchange box 4, and the guide tube 12 is fixedly installed in the air outlet. The bottom end of the heat exchange tube 7 is slidably inserted in the guide tube 12. The outer diameter of the heat exchange tube 7 is the same as the inner diameter of the guide tube 12. The sliding shaft 13 is fixedly connected to the outer periphery of the heat exchange tube 7. The inner wall of the guide tube 12 is provided with a spiral groove that slides with the sliding shaft 13. When the heat exchange tube 7 slides and moves up and down, the heat exchange tube 7 will drive the sliding shaft 13 to move up and down synchronously, and the sliding shaft 13 will slide along the spiral groove, so that the sliding shaft 13 performs a spiral rotation and lifting motion, and the heat exchange tube 7 performs a threaded rotation and lifting motion synchronously.

[0040] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown in the figure, the knocking mechanism includes a side frame 14, an end gear 15, a knocking block 16 and a driving assembly; the side frame 14 is fixedly installed in the exchange box 4, and a movable groove is opened on the side frame 14. The end gear 15 is rotatably installed in the movable groove, and the knocking block 16 is installed on the outer periphery of the end gear 15. The driving assembly is used to drive the end gear 15 to rotate in the movable groove. When the end gear 15 rotates, it can drive the knocking block 16 to rotate and make the knocking block 16 hit the outer periphery of the heat exchange tube 7. When heat exchange and heat recovery are performed, the end gear 15 is driven by the driving assembly to rotate. The rotation of the end gear 15 will drive the knocking block 16 to make a circular motion, so that the knocking block 16 knocks on the outer periphery of the heat exchange tube 7, causing the heat exchange tube 7 to vibrate. The vibration of the heat exchange tube 7 shakes off the dirt adhered to the inner wall of the heat exchange tube 7, which has a certain cleaning effect on the inner wall of the heat exchange tube 7.

[0041] like Figure 5 , Figure 6 , Figure 8 , Fig. 9 and Fig.10As shown in the figure, the driving assembly includes a transmission gear 17, a driving gear 18 and a driving rack 19; the transmission gear 17 is rotatably installed in the side frame 14, the transmission gear 17 is meshed with the end gear 15, the driving gear 18 is rotatably installed in the side frame 14, one end of the driving rack 19 is fixedly connected to the heat insulation floating plate 8, the driving rack 19 slides through the side frame 14, the driving rack 19 is meshed with the driving gear 18, when the heat insulation floating plate 8 is lifted and lowered by the pressure of the water and the rebound effect of the return spring 11, the heat insulation floating plate 8 will drive the driving rack 19 performs lifting and lowering motion synchronously. When the driving rack 19 performs lifting and lowering motion, the driving rack 19 will drive the driving gear 18 to rotate. When the driving gear 18 rotates, the driving gear 18 meshes with the transmission gear 17 and drives the transmission gear 17 to rotate. The driving gear 18 will drive the transmission gear 17 to rotate, and the transmission gear 17 will drive the end gear 15 to rotate. The end gear 15 will drive the knocking block 16 to rotate synchronously, so that the knocking block 16 will knock on the outer periphery of the heat exchange tube 7 when rotating, so that the heat exchange tube 7 vibrates and the adhesion on the inner wall is shaken off.

[0042] In actual conditions, when the knocking block 16 knocks on the outer periphery of the heat exchange tube 7, the driving rack 19 will continue to move, and the knocking block 16 will abut against the outer periphery of the heat exchange tube 7. The knocking block 16 may be pressed tightly against the outer periphery of the heat exchange tube 7 and cannot continue to rotate, thereby affecting the continued movement of the driving rack 19. At the same time, when the knocking block 16 rotates slowly, the knocking force is smaller, which will affect the vibration effect, so the following design is provided.

[0043] like Figure 5 and Figure 6 As shown in, the driving assembly also includes a spring 20; a plurality of teeth are arranged on one side of the driving gear 18 close to the transmission gear 17, and the plurality of teeth are arranged in an arc shape, and the teeth are meshed with the transmission gear 17; the end face gear 15 is rotatably installed in the side frame 14 through a rotating shaft, and a rotating groove is provided in the side frame 14, and a part of the rotating shaft of the end face gear 15 is located in the rotating groove, and the outer ring end of the spring 20 is fixedly connected to the inner wall of the rotating groove, and the inner ring end of the spring 20 is fixedly connected to the rotating shaft of the end face gear 15; an elastic rod 21 is connected between the end face gear 15 and the knocking block 16, and the setting of the elastic rod 21 allows the elastic rod 21 to bend when the knocking block 16 needs to pass over the heat exchange tube 7, so as to ensure that the knocking block 16 passes over the heat exchange tube 7, and when the driving gear 18 rotates, the teeth on the side of the driving gear 18 are distributed as shown in Fig. 9As shown in the distribution, only when the side teeth of the driving gear 18 are meshed with the transmission gear 17, the driving gear 18 will drive the transmission gear 17 to rotate through the side teeth meshing (it can control the transmission gear 17 to rotate a certain angle, that is, drive the end gear 15 to rotate a certain angle, and the end gear 15 drives the knocking block 16 to rotate the same angle), and then cooperate with the torque force of the clockwork spring 20 to drive the end gear 15 to rotate, and the end gear 15 will drive the elastic rod 21 and the knocking block 16 to rotate synchronously (due to the characteristics of the clockwork spring 20, the rotational force of the clockwork spring 20 driving the end gear 15 remains unchanged, regardless of the torsion state of the clockwork spring 20), so that the knocking block 16 quickly knocks on the outer periphery of the heat exchange tube 7, causing the heat exchange tube 7 to vibrate, thereby ensuring the knocking vibration effect.

[0044] like Figure 2 As shown in the figure, the filtering structure includes a mounting plate 22 and a mesh filter cartridge 23; the mounting plate 22 is fixedly installed in the filtering chamber, an air port is penetrated through the mounting plate 22, and the mesh filter cartridge 23 is installed in the air port. The mesh filter cartridge 23 is a conical bag filter cartridge, and the mesh filter cartridge 23 filters the flue gas.

[0045] like Figure 2 , Figure 3 , Figure 4 and Fig.10 As shown in the figure, the anti-blocking cleaning structure includes a mounting rod 24, an elastic rod 25 and a shifting block 26; the mounting rod 24 is fixedly connected to the bottom surface of the exchange box 4, one end of the elastic rod 25 is fixedly connected to the mounting rod 24, the middle part of the mesh filter cartridge 23 is suspended on the elastic rod 25, and the shifting block 26 is fixedly connected to the bottom end of the driving rack 19, and the shifting block 26 can shift the elastic rod 25, and when the heat insulation floating plate 8 is lifted and lowered, the heat insulation floating plate 8 will drive the driving rack 18 to rise and fall synchronously, and the driving rack 18 will drive the shifting block 2 6 synchronous lifting movement, when the shift block 26 moves up and down, the shift block 26 will abut against the end of the elastic rod 25, and the shift block 26 will bend against the elastic rod 25 until the shift block 26 passes over the elastic rod 25. The elastic rod 25 is not pushed by the shift block 26, and the elastic rod 25 recovers its deformation and shakes. When the elastic rod 25 shakes, it will also drive the mesh filter cartridge 23 to shake, and shake off the dust and other particles on the mesh filter cartridge 23, ensuring the cleaning of the mesh filter cartridge 23 and the smoothness of the flue gas flow.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An energy-saving hot flue gas treatment device for an industrial furnace, characterized in that: The invention comprises a processing box (1), wherein a processing chamber is provided in the processing box (1), an air inlet pipe (2) communicating with the processing chamber is installed at the top of the processing box (1), and an air outlet pipe (3) communicating with the processing chamber is installed at the bottom of the processing box (1); An exchange box (4) is fixedly installed in the processing chamber of the processing box (1), and the exchange box (4) can divide the processing chamber into an air intake chamber and a filter chamber arranged up and down. The exchange box (4) is located between the air intake chamber and the filter chamber. A heat exchange chamber is provided in the exchange box (4). A heat exchange tube (7) is slidably penetrated through the exchange box (4), and the two ends of the heat exchange tube (7) are respectively connected to the air intake chamber and the filter chamber. A partition is slidably installed in the exchange box (4), and the partition can separate the heat exchange chamber in the exchange box (4). The heat chamber is divided into a pressure regulating chamber and a displacement chamber arranged in an upper and lower manner; a liquid inlet pipe (5) communicating with the displacement chamber is installed on one side of the treatment box (1); a water outlet pipe (6) communicating with the displacement chamber is installed on the other side of the treatment box (1); the heat exchange tube (7) passes through the partition; the partition can drive the heat exchange tube (7) to slide in the heat exchange chamber; a guide structure is installed on the exchange box (4); when the heat exchange tube (7) is raised or lowered in the exchange box (4), the guide structure can guide the heat exchange tube (7) to rotate spirally; The exchange box (4) is provided with a knocking mechanism, and when the partition is raised or lowered in the exchange box (4), the knocking mechanism can be driven to knock the outer periphery of the heat exchange tube (7); A filter structure is installed in the filter cavity, and an anti-blocking cleaning structure is also installed in the filter cavity. The anti-blocking cleaning structure is used to clean adhesions on the filter structure.

2. The energy-saving hot flue gas treatment device for industrial furnaces according to claim 1 is characterized in that: The partition comprises a heat-insulating floating plate (8); the density of the heat-insulating floating plate (8) is less than that of water, and the heat-insulating floating plate (8) is slidably installed in the heat exchange cavity; A reset component is installed in the exchange box (4), and the reset component is used to drive the heat insulation floating plate (8) to slide and reset in the heat exchange cavity.

3. The energy-saving hot flue gas treatment device for industrial furnaces according to claim 2 is characterized in that: The reset assembly comprises a connecting pipe (9), a limiting plate (10) and a reset spring (11); an air inlet connected to the pressure regulating chamber is provided at the top of the exchange box (4); the connecting pipe (9) is fixedly installed in the air inlet; the top end of the heat exchange tube (7) is slidably inserted in the connecting pipe (9); the outer diameter of the heat exchange tube (7) is the same as the inner diameter of the connecting pipe (9); the limiting plate (10) is sleeved on the outer periphery of the connecting pipe (9); the reset spring (11) is sleeved on the outer periphery of the heat exchange tube (7); and the two ends of the reset spring (11) are respectively against the limiting plate (10) and the heat insulation floating plate (8).

4. The energy-saving hot flue gas treatment device for industrial furnaces according to claim 1 is characterized in that: The guide structure comprises a guide tube (12) and a sliding shaft (13); an air outlet connected to the displacement chamber is provided at the bottom of the exchange box (4); the guide tube (12) is fixedly installed in the air outlet; the bottom end of the heat exchange tube (7) is slidably inserted in the guide tube (12); the outer diameter of the heat exchange tube (7) is the same as the inner diameter of the guide tube (12); the sliding shaft (13) is fixedly connected to the outer periphery of the heat exchange tube (7); and the inner wall of the guide tube (12) is provided with a spiral sliding groove that slidably cooperates with the sliding shaft (13).

5. The energy-saving hot flue gas treatment device for industrial furnaces according to claim 4 is characterized in that: The knocking mechanism comprises a side frame (14), an end face gear (15), a knocking block (16) and a driving assembly; the side frame (14) is fixedly mounted in the exchange box (4); a movable groove is provided on the side frame (14); the end face gear (15) is rotatably mounted in the movable groove; the knocking block (16) is mounted on the outer periphery of the end face gear (15); and the driving assembly is used for driving the end face gear (15) to rotate in the movable groove; When the end face gear (15) rotates, it can drive the knocking block (16) to rotate and cause the knocking block (16) to hit the outer periphery of the heat exchange tube (7).

6. The energy-saving hot flue gas treatment device for industrial furnaces according to claim 5, characterized in that: The driving assembly comprises a transmission gear (17), a driving gear (18) and a driving rack (19); the transmission gear (17) is rotatably mounted in the side frame (14), the transmission gear (17) is meshed with the end face gear (15), the driving gear (18) is rotatably mounted in the side frame (14), one end of the driving rack (19) is fixedly connected to the heat insulation floating plate (8), and the driving rack (19) is meshed with the driving gear (18).

7. The energy-saving hot flue gas treatment device for industrial furnaces according to claim 6, characterized in that: The driving assembly further comprises a spring (20); a plurality of teeth are arranged on one side of the driving gear (18) close to the transmission gear (17); the plurality of teeth are arranged in an arc shape, and the teeth are meshed with the transmission gear (17); The end face gear (15) is rotatably mounted in the side frame (14) via a rotating shaft, a rotating groove is provided in the side frame (14), a part of the rotating shaft of the end face gear (15) is located in the rotating groove, the outer ring end of the spring (20) is fixedly connected to the inner wall of the rotating groove, and the inner ring end of the spring (20) is fixedly connected to the rotating shaft of the end face gear (15); An elastic rod (21) is connected between the end face gear (15) and the knocking block (16).

8. The energy-saving hot flue gas treatment device for industrial furnaces according to claim 7, characterized in that: The filtering structure comprises a mounting plate (22) and a mesh filter cartridge (23); the mounting plate (22) is fixedly mounted in the filtering chamber, an air passage is provided through the mounting plate (22), and the mesh filter cartridge (23) is mounted in the air passage.

9. The energy-saving hot flue gas treatment device for industrial furnaces according to claim 8, characterized in that: The anti-blocking cleaning structure comprises a mounting rod (24), an elastic rod (25) and a shifting block (26); the mounting rod (24) is fixedly connected to the bottom surface of the exchange box (4); one end of the elastic rod (25) is fixedly connected to the mounting rod (24); the middle part of the mesh filter cartridge (23) is suspended on the elastic rod (25); the shifting block (26) is fixedly connected to the bottom end of the driving rack (19); and the shifting block (26) can shift the elastic rod (25).

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