Energy-saving continuous conveyor furnace waste heat recovery system
By using a guide vane and a variable frequency fan system, the problem of fixed flue gas flow path inside the continuous conveying furnace collection box was solved, and diversified disturbance of flue gas inside the collection box was realized, thereby improving waste heat recovery efficiency and energy saving effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHUANGYONG (KUNSHAN) MASCH AUTOMATION TECH CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-06-30
AI Technical Summary
The fixed flue gas flow path inside the collection box of the existing continuous conveying furnace results in poor flue gas disturbance at the edge, affecting the waste heat recovery efficiency.
By employing a guide vane and variable frequency fan system, the flue gas first blows the guide vane to tilt and change its flow direction. Combined with the rotation of the smoke conveying plate and smoke conveying holes, the variable frequency fan adjusts the wind speed and power to achieve diverse disturbances of the flue gas in the collection box and enhance the flue gas flow effect.
It improves the flue gas disturbance effect inside the collection box, enhances the waste heat recovery efficiency and achieves energy saving. By adjusting the flue gas flow direction and speed in various ways, it enhances the mixing and heat exchange effect of the flue gas inside the collection box.
Smart Images
Figure CN224435047U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of furnace energy-saving equipment technology, and in particular to an energy-saving continuous conveying furnace waste heat recovery system. Background Technology
[0002] A continuous conveyor furnace is a heat treatment device that uses continuous or intermittent loading to move workpieces within the furnace and complete heating and holding processes. Continuous operation furnaces can use certain mechanical mechanisms to continuously or intermittently load and unload materials, sequentially completing the heating process through different temperature zones required by the part's processing technology. These furnaces offer advantages such as continuous production, high efficiency, stable product quality, energy saving, low production costs, ease of mechanization and automation, and suitability for mass production.
[0003] Chinese patent CN222231330U discloses a waste heat recovery device for an industrial electric furnace. The device includes an electric furnace body, a collection box on the right side of the furnace body, a storage tank on the right side of the collection box, an addition pipe fixedly connected to the top of the storage tank, a drain pipe fixedly connected to the outer periphery of the storage tank, a control valve on the outer periphery of the drain pipe, a flue gas pipe fixedly connected to the rear of the collection box, the right end of the flue gas pipe fixedly connected to the left side of the collection box, an exhaust pipe fixedly connected to the right side of the collection box, and a liquid pump fixedly connected to the top right side of the collection box. A filter plate filters impurities in the flue gas, preventing impurities from adhering to the surface of the liquid pump and affecting the heat exchange efficiency of the coolant inside the pump. Heat sinks transfer heat to the water flow inside the storage tank, thereby achieving rapid cooling of the coolant and improving the heat recovery efficiency of the device.
[0004] The aforementioned technologies have the following drawbacks: their smoke conveying pipes and exhaust pipes are fixed to the installation position of the collection box, and are installed in the middle of the two opposite side plates of the collection box. Therefore, the flow path of the flue gas in the collection box is relatively fixed, and more flue gas passes directly through the middle of the collection box and is discharged, which easily causes poor flue gas disturbance at the inner edge of the collection box. Therefore, it needs to be improved. Utility Model Content
[0005] To improve the flue gas disturbance effect inside the collection box, this application provides an energy-saving continuous conveying furnace waste heat recovery system.
[0006] An energy-saving continuous conveying furnace waste heat recovery system includes a furnace body and a collection box. A flue gas pipe is connected between the furnace body and the collection box. The collection box is connected to an exhaust pipe. The collection box is also connected to a liquid delivery pipe and a liquid discharge pipe. A heat exchange section is connected between the liquid delivery pipe and the liquid discharge pipe. The heat exchange section is located inside the collection box. A guide vane is rotatably installed inside the collection box. The guide vane is located between the flue gas pipe and the heat exchange section. A variable frequency fan is connected to the flue gas pipe.
[0007] By adopting the above technical solution, the flue gas conveying process of this application is as follows: after the flue gas enters the collection box from the flue pipe, it does not directly pass through the heat exchange section. The flue gas is first blown to the guide plate, and the flue gas will blow the guide plate, causing the guide plate to be tilted. Subsequently, the flue gas will also be blown towards the edge of the collection box according to the tilt angle of the guide plate, thereby increasing the turbulence effect of the flue gas in various parts of the collection box. In addition, a variable frequency fan is installed at the flue pipe. When the furnace body is overheated, the power of the variable frequency fan can be increased, thereby increasing the flue gas velocity. When the furnace body is not overheated, the power of the variable frequency fan can be reduced, thereby reducing the flue gas velocity, thereby achieving energy saving. On the other hand, when the power of the variable frequency fan changes, the flue gas velocity changes, and the tilt angle of the guide plate also changes. This allows the flow direction of the flue gas in the collection box to change accordingly, and the area of flue gas turbulence to change accordingly, further improving the flue gas turbulence effect in various parts of the collection box.
[0008] Preferably, a smoke conveying hood is provided at the connection between the smoke conveying pipe and the collection box. The smoke conveying hood is bucket-shaped and the inner diameter of the end near the collection box is larger than that of the other end. A smoke conveying plate is rotatably arranged inside the smoke conveying hood. The smoke conveying plate is provided with smoke conveying holes. A steering drive for driving the smoke conveying plate to rotate is provided inside the smoke conveying hood. The central axis of the smoke conveying holes is offset from the rotation axis of the smoke conveying plate.
[0009] By adopting the above technical solution, the flue gas is output from the flue gas conveying port, and the position of the flue gas conveying port continuously changes as the flue gas conveying plate rotates, thus improving the air turbulence effect inside the collection box. In addition, the tilt angle of the air guide plate varies depending on the position of the air blowing, further enhancing the versatility of the air guide plate's tilt angle.
[0010] Preferably, the inner edge of the smoke conveying hood is provided with a relief groove arranged circumferentially, the edge of the smoke conveying plate is located inside the relief groove, the edge of the smoke conveying plate is connected to a sealing strip, and the outer edge of the sealing strip abuts against the relief groove.
[0011] By adopting the above technical solution, the edge of the smoke conveying plate is located in the relief groove and the outer edge of the sealing strip connected to the edge abuts against the relief groove, which can make the position of the smoke conveying plate more stable when it rotates. At the same time, it can reduce the leakage of flue gas from the gap between the smoke conveying plate and the smoke conveying hood, and ensure that the flue gas is output from the smoke conveying hole in a regular manner, thereby continuously improving the air disturbance effect inside the collection box and the diversity of the change of the tilt angle of the air guide plate.
[0012] Preferably, the side of the smoke conveying plate is provided with an assisting roller groove, and an assisting ball is rotatably disposed inside the assisting roller groove. The assisting ball is in contact with the clearance groove. The smoke conveying plate is provided with an oil-immersing hole, and an oil-immersing sponge is disposed inside the oil-immersing hole. The oil-immersing hole is connected to the assisting roller groove, and the oil-immersing sponge is in contact with the assisting ball.
[0013] By adopting the above technical solution, the frictional resistance of the assisting ball and the relief groove can be reduced when the smoke conveying plate rotates; the oil-impregnated sponge in the oil-impregnated hole is in contact with the assisting ball, which can keep the assisting ball lubricated, further reduce the rotational resistance, make the smoke conveying plate rotate more smoothly, and thus make the position change of the smoke conveying hole more stable, improve the air disturbance effect inside the collection box and the diversity of the tilt angle change of the air guide plate.
[0014] Preferably, the air guide plate includes a mounting rod and a plurality of air guide strips, the mounting rod is connected to the collection box, and the plurality of air guide strips are rotatably connected to the mounting rod.
[0015] By adopting the above technical solution, the air guide plate adopts the structure of a mounting rod and several air guide strips rotatably connected to the mounting rod. When the flue gas conveying position changes, it can drive the corresponding air guide strips to rotate more, so that the tilt angle of the air guide strips at different positions changes, further improving the disturbance effect.
[0016] Preferably, an air guide groove is provided on the side of the air guide strip near the smoke conveying pipe, and the length direction of the air guide groove is consistent with the length direction of the air guide strip.
[0017] By adopting the above technical solution, the air guide duct is more conducive to guiding the flow of flue gas and further improving the disturbance effect.
[0018] Preferably, the heat exchange section is movably connected to the collection box, and the heat exchange section is connected to the infusion pipe and the drainage pipe through flexible connecting pipes.
[0019] By adopting the above technical solution, the heat exchange section can be in a state of slight shaking inside the collection box. On the one hand, this can promote the disturbance of flue gas inside the collection box. On the other hand, when the air guide plate swings, it can impact the heat exchange section, thereby causing slight vibration of the heat exchange section, which can promote the shedding of some dust from the surface of the heat exchange section.
[0020] Preferably, the top of the collection box is connected to a lifting rope, the bottom of the lifting rope is connected to a hook, the heat exchange section is connected to a lifting ring, and the hook is connected to the lifting ring.
[0021] By adopting the above technical solution, the top of the collection box is connected to the lifting ring of the heat exchange section via a rope and hook, thus realizing the movable connection between the heat exchange section and the collection box.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. The flue gas is first blown to the air guide plate, which is tilted and the flue gas is blown towards the inner edge of the collection box along the tilt angle of the air guide plate, increasing the disturbance effect of the flue gas in various parts of the collection box.
[0024] 2. A variable frequency fan is installed at the flue pipe, which can adjust the power according to the furnace temperature to achieve energy saving. The power change also changes the tilt angle of the guide plate and the direction of flue gas flow, further improving the flue gas disturbance effect in various parts of the collection box.
[0025] 3. The position of the smoke conveying hole changes continuously as the smoke conveying plate rotates. The different positions blow the air guide plate, making the tilt angle of the air guide plate more varied, and making the air disturbance effect inside the collection box better. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;
[0027] Figure 2 This is a schematic diagram illustrating the connection between the smoke hood and the smoke conveying pipe in an embodiment of this application;
[0028] Figure 3 This is a schematic diagram illustrating the connection between the smoke conveying hole and the smoke conveying plate in an embodiment of this application;
[0029] Figure 4 This is a structural schematic diagram illustrating the connection relationship between the smoke conveying plate and the smoke conveying hood in an embodiment of this application;
[0030] Figure 5 This is a schematic diagram illustrating the positional relationship between the air guide plate and the smoke conveying hole in an embodiment of this application;
[0031] Figure 6 This is a structural schematic diagram in the embodiments of this application used to illustrate the positional relationship of adjacent guide vanes under flue gas flow conditions;
[0032] Figure 7 This is a structural schematic diagram illustrating the connection relationship between the heat exchange section and the collection box in the embodiments of this application.
[0033] In the picture:
[0034] 1. Furnace body; 11. Collection box; 12. Smoke conveying pipe; 13. Smoke exhaust pipe; 14. Liquid conveying pipe; 15. Liquid drain pipe; 16. Heat exchange section; 17. Variable frequency fan; 18. Flexible connecting pipe;
[0035] 2. Air guide plate; 21. Mounting rod; 22. Air guide strip; 23. Air guide groove;
[0036] 3. Smoke hood; 31. Smoke conveying plate; 32. Smoke conveying hole; 33. Steering drive; 34. Clearance groove; 35. Sealing strip; 36. Power assist roller groove; 37. Power assist ball; 38. Oil immersion hole; 39. Oil immersion sponge;
[0037] 4. Lifting rope; 41. Lifting hook; 42. Lifting ring. Detailed Implementation
[0038] The technical solutions in the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are also within the protection scope of this utility model.
[0039] This application mainly adopts a scheme of flue gas in the furnace body being disturbed and heat exchanged through a guide plate, which achieves the effect of improving the flue gas disturbance effect inside the collection box and energy saving. The following is a further detailed description of this application.
[0040] Example
[0041] Reference Figure 1 The energy-saving continuous conveying furnace waste heat recovery system provided in this application includes a furnace body 1 and a collection box 11. The furnace body 1 is connected to the collection box 11 via a flue pipe 12. The collection box 11 is also connected to an exhaust pipe 13, a liquid inlet pipe 14, and a liquid outlet pipe 15. A heat exchange section 16 is located between the liquid inlet pipe 14 and the liquid outlet pipe 15, inside the collection box 11. A guide vane 2 is rotatably mounted inside the collection box 11, located between the flue pipe 12 and the heat exchange section 16. The flue pipe 12 is connected to a variable frequency fan 17. After the flue gas enters the collection box 11 from the flue pipe 12, it is first blown to the guide vane 2. The guide vane 2 is tilted, and the flue gas is blown towards the inner edge of the collection box 11 at the tilt angle, thereby increasing the turbulence effect of the flue gas inside the collection box 11. The variable frequency fan 17 at the flue duct 12 has adjustable power, for example, it can be dynamically adjusted according to the temperature of the furnace body 1, thereby achieving energy saving. In addition, the change in fan power causes the flue gas velocity to change accordingly, which in turn changes the tilt angle of the guide vane 2, thereby further improving the flue gas disturbance effect.
[0042] Specifically, furnace body 1 is a continuous conveying furnace, allowing workpieces to move within the furnace to complete heating and heat preservation processes, and is the source of flue gas. Furnace body 1 is generally made of high-temperature resistant steel, and its shape can be cuboid, etc., with internal structures such as heating elements. The flue gas conveying pipe 12 is used to transport the flue gas generated by furnace body 1 to collection box 11. It can be a circular metal pipe with a certain wall thickness to ensure strength and sealing. The connection method between flue gas conveying pipe 12 and furnace body 1 and collection box 11 can be flange connection to ensure a tight connection.
[0043] The collection box 11 is a closed enclosure used for collecting and treating flue gas. It is generally made of welded metal sheets and can be cubic or cuboid in shape. The sides of the collection box 11 have interfaces for connecting to the flue gas conveying pipe 12, the flue gas exhaust pipe 13, the liquid conveying pipe 14, and the liquid draining pipe 15. The flue gas exhaust pipe 13 is used to discharge the preheated and recovered flue gas from the collection box 11. Its structure and material are similar to the flue gas conveying pipe 12, and its connection to the collection box 11 can also be a flange connection. The end of the flue gas exhaust pipe 13 can be connected to flue gas treatment equipment for functions such as dust filtration.
[0044] The infusion pipe 14 is used to transport the liquid to be heat-exchanged into the heat exchange section 16 inside the collection tank 11, and the drain pipe 15 is used to discharge the liquid after heat exchange from the collection tank 11. The infusion pipe 14 and the drain pipe 15 can be made of plastic or metal, and their diameter is determined according to actual needs. They can be connected to the collection tank 11 by welding or flange connection.
[0045] The heat exchange section 16 is the part located inside the collection box 11 between the infusion pipe 14 and the drain pipe 15. It can be a tube bundle structure composed of multiple thin tubes to increase the contact area with the flue gas and improve the heat exchange efficiency. The heat exchange section 16 can be made of metals with good thermal conductivity, such as copper or aluminum.
[0046] The guide vane 2 is located between the flue pipe 12 and the heat exchange section 16, and is rotatably connected to the inside of the collection box 11. The guide vane 2 can be made of metal or plastic, and its smooth surface reduces the resistance to flue gas flow. When flue gas blows onto the guide vane 2, the guide vane 2 rotates around its axis and tilts, changing the flow direction of the flue gas. A variable frequency fan 17 is installed on the flue pipe 12, which can adjust the speed and power. The variable frequency fan 17 consists of a motor, impeller, and other components. The motor can be an AC motor, and its speed is controlled by a frequency converter. The flue gas generated by the furnace body 1 enters the collection box 11 through the flue pipe 12 under the action of the variable frequency fan 17. After encountering the guide vane 2, its flow direction is changed, increasing the flue gas turbulence effect inside the collection box 11. At the same time, the coolant enters the heat exchange section 16 through the liquid delivery pipe 14, exchanges heat with the flue gas, absorbs the heat of the flue gas, and is discharged from the drain pipe 15. The treated flue gas is discharged from the exhaust pipe 13. This combination logic enables the functions of waste heat recovery and improved flue gas disturbance.
[0047] Reference Figure 2 and Figure 3Specifically, a smoke hood 3 is provided at the connection between the smoke conveying pipe 12 and the collection box 11. The smoke hood 3 is bucket-shaped, with the inner diameter of the end near the collection box 11 being larger than that of the other end. A smoke conveying plate 31 is rotatably arranged inside the smoke hood 3, and the smoke conveying plate 31 is provided with smoke conveying holes 32. A steering drive 33 is provided inside the smoke hood 3 to drive the smoke conveying plate 31 to rotate. The central axis of the smoke conveying hole 32 is offset from the rotation axis of the smoke conveying plate 31. The smoke hood 3 can be made of metal, and its bucket-shaped structure helps the diffusion of smoke. The smoke conveying plate 31 can be a circular metal plate, rotatably connected to the inside of the smoke hood 3 via bearings. The smoke conveying hole 32 can be a circular or square hole; in this embodiment, it is circular. The steering drive 33 can be a motor, which drives the smoke conveying plate 31 to rotate through a transmission mechanism such as gears or belts. Replaceable features include different shapes of the smoke conveying hole 32, different transmission methods, etc. When the smoke conveying plate 31 rotates, the position of the smoke conveying hole 32 changes continuously, which makes the air disturbance effect inside the collection box 11 better. At the same time, the smoke from different positions blows the air guide plate 2, further enhancing the diversity of the tilt angle of the air guide plate 2.
[0048] Reference Figure 4 The inner edge of the smoke conveying hood 3 is provided with a circumferentially oriented relief groove 34. The edge of the smoke conveying plate 31 is located inside the relief groove 34, and a sealing strip 35 is connected to the edge of the smoke conveying plate 31. The outer edge of the sealing strip 35 abuts against the relief groove 34. The relief groove 34 can be an annular groove, the width and depth of which are determined according to the thickness and size of the smoke conveying plate 31. The sealing strip 35 can be made of rubber, which has good elasticity and sealing performance, and can reduce the leakage of flue gas from the gap between the smoke conveying plate 31 and the smoke conveying hood 3.
[0049] The side of the smoke conveying plate 31 is provided with an assisting roller groove 36, and an assisting ball 37 is rotatably mounted inside the assisting roller groove 36. The assisting ball 37 fits into the clearance groove 34. The smoke conveying plate 31 is provided with an oil-immersing hole 38, and an oil-immersed sponge 39 is placed inside the oil-immersing hole 38. The oil-immersing hole 38 is connected to the assisting roller groove 36, and the oil-immersed sponge 39 fits into the assisting ball 37. The assisting roller groove 36 can be an annular groove, and the assisting ball 37 can be a steel ball that rolls within the assisting roller groove 36 to reduce friction when the smoke conveying plate 31 rotates. The oil-immersing hole 38 can be a circular hole, and the oil-immersed sponge 39 can absorb lubricating oil to provide lubrication for the assisting ball 37, ensuring the smooth rotation of the smoke conveying plate 31.
[0050] Reference Figure 5 and Figure 6The air guide plate 2 includes a mounting rod 21 and several air guide strips 22. The mounting rod 21 is connected to the collection box 11, and the air guide strips 22 are rotatably connected to the mounting rod 21. The mounting rod 21 can be a metal rod, fixed inside the collection box 11 by welding or bolting. The air guide strips 22 can be strip-shaped metal plates, rotatably connected to the mounting rod 21 via shafts. When the flue gas delivery position changes, the corresponding air guide strips 22 will rotate more, and the tilt angle of the air guide strips 22 at different positions will change, further enhancing the turbulence effect. An air guide groove 23 is provided on the side of the air guide strip 22 near the flue pipe 12, and the length direction of the air guide groove 23 is consistent with the length direction of the air guide strip 22. The air guide groove 23 can be a strip-shaped groove, which helps to guide the flow of flue gas, allowing the flue gas to flow more smoothly along the air guide strip 22.
[0051] Reference Figure 1 and Figure 7 The heat exchange section 16 is movably connected to the collection box 11, and is connected to the infusion pipe 14 and the drain pipe 15 via flexible connecting pipes 18. The flexible connecting pipes 18 can be rubber tubes or corrugated pipes, possessing a certain degree of flexibility, allowing the heat exchange section 16 to sway slightly inside the collection box 11. This promotes flue gas turbulence inside the collection box 11, and when the guide vane 2 swings, it can impact the heat exchange section 16, causing it to vibrate slightly and promoting the shedding of some dust from its surface.
[0052] Reference Figure 7 The top of the collection box 11 is connected to a lifting rope 4, and the bottom of the lifting rope 4 is connected to a hook 41. The heat exchange section 16 is connected to a lifting ring 42, and the hook 41 is connected to the lifting ring 42. The lifting rope 4 can be a steel wire rope with sufficient strength. The hook 41 and the lifting ring 42 can be made of metal and are connected to the lifting rope 4 and the heat exchange section 16 respectively by welding or other methods. This connection method facilitates the installation and disassembly of the heat exchange section 16, while ensuring the movable connection of the heat exchange section 16.
[0053] The implementation principle of this embodiment is as follows: The energy-saving continuous conveying furnace waste heat recovery system generates flue gas through the furnace body 1, which is then conveyed to the collection box 11 via the flue gas pipe 12 under the action of the variable frequency fan 17. The flue gas blows the guide plate 2, changing the flow direction and increasing the flue gas disturbance effect inside the collection box 11. The variable frequency fan 17 at the flue gas pipe 12 adjusts its power according to the temperature of the furnace body 1 to achieve energy saving. The rotation of the flue gas plate 31 inside the flue gas hood 3 changes the position of the flue gas hole 32, further enhancing the disturbance effect. The guide strips 22 of the guide plate 2 rotate with the position of the flue gas, and the guide groove 23 guides the flow of the flue gas. The heat exchange section 16 is connected to the liquid delivery pipe 14 and the liquid discharge pipe 15 through the flexible connecting pipe 18, and is movably connected to the collection box 11 through the hanging rope 4, which can both promote flue gas disturbance and remove surface dust. Compared with the prior art, the entire system improves the flue gas disturbance effect inside the collection box 11, improves the waste heat recovery efficiency, and achieves energy saving, which has strong practicality and innovation.
[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An energy-saving continuous conveying furnace waste heat recovery system, comprising a furnace body (1) and a collection box (11), wherein a flue pipe (12) is connected between the furnace body (1) and the collection box (11), a flue pipe (13) is connected to the collection box (11), and the collection box (11) is also connected to a liquid delivery pipe (14) and a liquid drain pipe (15), characterized in that: A heat exchange section (16) is connected between the infusion pipe (14) and the drain pipe (15). The heat exchange section (16) is located inside the collection box (11). A guide plate (2) is rotatably installed inside the collection box (11). The guide plate (2) is located between the smoke conveying pipe (12) and the heat exchange section (16). The smoke conveying pipe (12) is connected to a variable frequency fan (17).
2. The energy-saving continuous conveying furnace waste heat recovery system according to claim 1, characterized in that: A smoke conveying hood (3) is provided at the connection between the smoke conveying pipe (12) and the collection box (11). The smoke conveying hood (3) is bucket-shaped and the inner diameter of the end near the collection box (11) is larger than that of the other end. A smoke conveying plate (31) is rotatably provided inside the smoke conveying hood (3). The smoke conveying plate (31) is provided with a smoke conveying hole (32). A steering drive (33) for driving the smoke conveying plate (31) to rotate is provided inside the smoke conveying hood (3). The central axis of the smoke conveying hole (32) is offset from the rotation axis of the smoke conveying plate (31).
3. The energy-saving continuous conveying furnace waste heat recovery system according to claim 2, characterized in that: The inner edge of the smoke conveying hood (3) is provided with a relief groove (34) arranged circumferentially. The edge of the smoke conveying plate (31) is located inside the relief groove (34). The edge of the smoke conveying plate (31) is connected with a sealing strip (35). The outer edge of the sealing strip (35) abuts against the relief groove (34).
4. The energy-saving continuous conveyor furnace waste heat recovery system according to claim 3, characterized in that: The side of the smoke conveying plate (31) is provided with an assisting roller groove (36), and an assisting ball (37) is rotatably arranged inside the assisting roller groove (36). The assisting ball (37) is in contact with the clearance groove (34). The smoke conveying plate (31) is provided with an oil immersion hole (38), and an oil immersion sponge (39) is arranged inside the oil immersion hole (38). The oil immersion hole (38) is connected to the assisting roller groove (36), and the oil immersion sponge (39) is in contact with the assisting ball (37).
5. The energy-saving continuous conveyor furnace waste heat recovery system according to claim 2, characterized in that: The air guide plate (2) includes a mounting rod (21) and several air guide strips (22). The mounting rod (21) is connected to the collection box (11), and the several air guide strips (22) are rotatably connected to the mounting rod (21).
6. The energy-saving continuous conveyor furnace waste heat recovery system according to claim 5, characterized in that: The air guide strip (22) is provided with an air guide groove (23) on the side near the smoke conveying pipe (12), and the length direction of the air guide groove (23) is consistent with the length direction of the air guide strip (22).
7. The energy-saving continuous conveyor furnace waste heat recovery system according to claim 1, characterized in that: The heat exchange section (16) is movably connected to the collection box (11), and the heat exchange section (16) is connected to the infusion pipe (14) and the drain pipe (15) through a flexible connecting pipe (18).
8. The energy-saving continuous conveying furnace waste heat recovery system according to claim 7, characterized in that: The top of the collection box (11) is connected to a hanging rope (4), the bottom of the hanging rope (4) is connected to a hook (41), the heat exchange section (16) is connected to a hanging ring (42), and the hook (41) is connected to the hanging ring (42).