Electric furnace tail gas recovery heat exchange heating device

Abstract

The invention discloses an electric furnace tail gas recovery heat exchange heating device, belongs to the technical field of tail gas treatment, and aims to solve the problems that the contact time of tail gas and a spiral water pipe is short, heat energy in the tail gas cannot be fully transmitted to a medium in the spiral water pipe, and the waste heat recovery efficiency is reduced. The electric furnace tail gas recovery heat exchange heating device comprises a device body, a gas inlet pipeline is arranged in the device body, a gas outlet pipeline is arranged on the side wall of the end, away from the gas inlet pipeline, of the device body, a pump is fixedly installed at the upper end of the device body, a heat preservation cavity is formed in the device body and communicates with the gas inlet pipeline, and a flow dividing cover is fixedly installed in the heat preservation cavity. According to the tail gas heat recovery device, heat in tail gas can be fully recovered and utilized, energy waste is reduced, the production cost is reduced, meanwhile, particle impurities in the tail gas can be removed, the phenomena of dust deposition and blockage in equipment are reduced, the maintenance cost of the equipment is reduced, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tail gas treatment, and in particular to an electric furnace tail gas recovery heat exchange heating device. Background Art

[0002] An electric furnace is a heating furnace that converts the electrical energy in the furnace into heat to heat the workpiece. It can be divided into resistance furnace, induction furnace, arc furnace, plasma furnace, electron beam furnace, etc. During the electric furnace steelmaking process, a large amount of high-temperature flue gas will be generated. In order to effectively recover the waste heat of these high-temperature flue gases and convert them into usable energy, heat exchange devices are usually used to recover the waste heat of these high-temperature flue gases and convert them into usable energy. However, the existing heat exchange devices still have certain deficiencies when used.

[0003] For example, the announcement number CN215373579U is an energy-saving exhaust gas waste heat recovery device for a molten aluminum melting furnace. Through the setting of the exhaust gas filtering mechanism, the filter layer can filter and purify the exhaust gas of the molten aluminum melting furnace before discharging it. While preheating the exhaust gas, it can reduce pollution to the environment. The setting of the sealing frame and the fixed plate makes it easy to replace the filter layer, thereby improving the practicality of the exhaust gas waste heat recovery device for the molten aluminum melting furnace. However, in actual use, the exhaust gas enters from the air inlet hood and is then discharged from the air outlet hood, resulting in a shorter contact time between the exhaust gas and the spiral water pipe. The heat energy in the exhaust gas cannot be fully transferred to the medium in the spiral water pipe, thereby reducing the waste heat recovery efficiency.

[0004] Therefore, an electric furnace tail gas recovery heat exchange heating device is proposed to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide an electric furnace exhaust gas recovery heat exchange heating device to solve the problem raised by the above background technology that when the equipment currently on the market is in use, the contact time between the exhaust gas and the spiral water pipe is short, and the heat energy in the exhaust gas cannot be fully transferred to the medium in the spiral water pipe, thereby reducing the waste heat recovery efficiency.

[0006] To achieve the above object, the present invention provides the following technical solution: an electric furnace tail gas recovery heat exchange heating device, comprising a device body, a side wall of the device body is provided with an air inlet pipe, and a side wall of the device body away from one end of the air inlet pipe is provided with an air outlet pipe, and a pump is fixedly installed on the upper end of the device body;

[0007] Also includes:

[0008] A heat preservation chamber is provided in the device body, the heat preservation chamber is communicated with the air inlet pipe, a flow divider is fixedly installed in the heat preservation chamber, and a first water tank is fixedly installed in the flow divider;

[0009] A heat exchange cavity is provided in the device body on the side of the heat preservation cavity, wherein a heat exchange elbow is provided in the heat exchange cavity, and a cleaning mechanism is provided at the bottom of the heat exchange cavity below the heat exchange elbow to clean attachments dropped on the bottom of the heat exchange cavity;

[0010] A heat storage chamber is provided in the device body on the side of the heat exchange chamber, the heat storage chamber is connected with the air outlet pipe, and a second water tank is fixedly installed in the heat storage chamber, a connecting groove is provided on the second water tank, and a square tube is fixedly connected to the side wall of the second water tank, a first pipe is provided on the square tube, and a water inlet end of the first pipe is connected with a water outlet end of a pump, and a water inlet end of the pump is connected with the second water tank.

[0011] Preferably, the first water tank is arranged in a circular ring structure, and the middle channel of the first water tank is connected with the heat exchange cavity, and a drainage mechanism for exhausting air is arranged in the middle channel of the first water tank;

[0012] Preferably, the drainage mechanism includes a housing, an impeller, a rotating rod, a connecting rod, a fan blade, a scraper and an adsorption plate;

[0013] A housing is fixedly arranged in the middle channel of the first water tank, an impeller is rotatably installed in the housing, and a rotating rod is fixedly connected to the shaft end of the impeller, an end of the rotating rod away from the impeller penetrates and extends out of the housing and is fixedly connected to the connecting rod, and a fan blade is fixedly nested and connected to the outer wall of the rotating rod extending out of the housing;

[0014] A scraper is fixedly arranged on the side wall of the connecting rod, and two scrapers are symmetrically arranged about the connecting rod, and the two scrapers are located between the diverter hood and the first water tank, and the scrapers are arranged in a rectangular frame structure, the upper end of the plate is in contact with the inner wall of the diverter hood, and the bottom end of the scraper is in contact with the outer wall of the first water tank, and an adsorption plate is fixedly arranged in the middle of the scraper.

[0015] Preferably, the diameter of the shell is smaller than the diameter of the middle channel of the first water tank, and the shell is connected to the water outlet end of the heat exchange elbow, and the shell is connected to the first water tank through a pipeline.

[0016] Preferably, a guide plate is fixedly connected to the heat exchange elbow, and two heat exchange elbows are symmetrically arranged about the guide plate, and the water inlet ends of the two heat exchange elbows are connected to the square tube, and the water inlet end of the square tube is connected to the first pipeline.

[0017] Preferably, the guide plate is located in the heat exchange chamber, and the guide plate is a conical structure, and the guide plate corresponds to the shell, an exhaust hole is opened on the inner wall of the device body between the heat exchange chamber and the heat storage chamber, and the exhaust hole connects the heat exchange chamber and the heat storage chamber, and a control valve is arranged in the exhaust hole.

[0018] Preferably, the cleaning mechanism comprises a water spray pipe and a second pipe;

[0019] A water spray pipe is fixedly arranged at the top of the heat exchange chamber, a second pipe is fixedly connected to the water spray pipe, and an end of the second pipe away from the water spray pipe is fixedly connected to the first pipe, the water spray pipe, the first pipe and the second pipe are connected, and a valve is arranged at the connection point between the first pipe and the second pipe.

[0020] Preferably, the cleaning mechanism further comprises a fixed shell, a driving motor, a reciprocating screw, a cleaning plate, a pulley, a worm, a belt and a rotating shaft;

[0021] A fixed shell, fixedly arranged on a side wall of the device body, wherein a driving motor is fixedly installed in the fixed shell;

[0022] There are two reciprocating screws, both of which are rotatably arranged in the heat exchange chamber, and both ends of the two reciprocating screws are sleeved with worms, and a cleaning plate is sleeved and connected to the outer side of the reciprocating screw on the opposite side of the worm;

[0023] There are two pulleys, both of which are rotatably arranged on the side wall of the device body, and belts are sleeved on the outer sides of the two pulleys.

[0024] The two pulleys correspond to the reciprocating screw rods one by one, and the shaft ends of the two pulleys extend into the heat exchange cavity and are fixedly connected to the reciprocating screw rods, and the shaft end of one of the pulleys is fixedly connected to the output end of the driving motor;

[0025] There are two rotating shafts, which are symmetrically arranged in the heat exchange cavity below the heat exchange elbow, and both ends of the rotating shafts are fixedly connected with worm gears, and two knocking components are arranged on the two rotating shafts.

[0026] Preferably, the reciprocating screw is fixedly connected to the worm, and the worm is meshed with the worm wheel, the reciprocating screw is threadedly meshed with the cleaning plate, and the bottom end of the cleaning plate is in contact with the inner wall of the heat exchange chamber.

[0027] Preferably, the striking assembly includes a first disc, a second disc and a striking hammer, the first disc is fixedly arranged on the outer wall of the rotating shaft, and the second disc is fixedly connected to the rotating shaft on the side of the first disc, the first disc and the second disc are both provided with a receiving groove, and the receiving groove is rotatably connected to a striking hammer through a torsion spring, a plurality of the striking hammers are arranged in a circular array about the center point of the receiving groove, and the number of the striking hammers on the second disc is greater than the number of the striking hammers on the first disc.

[0028] Compared with the prior art, the beneficial effects of the present invention are: the electric furnace tail gas recovery heat exchange heating device can fully recover and utilize the heat in the tail gas, which not only reduces energy waste, but also reduces production costs. At the same time, it can remove particulate impurities in the tail gas, reduce dust accumulation and blockage inside the equipment, reduce equipment maintenance costs, and improve heat exchange efficiency. The specific contents are as follows:

[0029] 1. It is equipped with a heat preservation chamber, a heat exchange chamber and a heat storage chamber. The exhaust gas is transported from the air inlet pipe to the device body and then discharged from the air outlet pipe, so that the exhaust gas passes through the heat preservation chamber, the heat exchange chamber and the heat storage chamber in sequence, so that the heat energy in the exhaust gas can be effectively utilized at different stages, reducing heat energy loss and improving heat exchange efficiency.

[0030] 2. A reciprocating screw and a cleaning plate are provided, which are driven by a driving motor to drive the reciprocating screw to rotate, and then through the thread engagement, drive the cleaning plate to move along the inner wall of the heat exchange chamber to scrape off the impurities and dirt on the inner wall of the bottom end of the heat exchange chamber, and the reciprocating screw will drive the worm to rotate, thereby engaging with the worm and the worm wheel, driving the knocking assembly on the rotating shaft to knock on the inner wall of the device body, causing the device body to vibrate, thereby gathering the scraped impurities to prevent the impurities from being dispersed in various corners of the heat exchange chamber, thereby facilitating subsequent cleaning and collection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the internal structure of the heat preservation chamber of the present invention;

[0033] Figure 3 This is a schematic diagram of the main cross-sectional structure of the splitter cover of the present invention;

[0034] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0035] Figure 5 This is a schematic diagram of the main cross-sectional structure of the device body of the present invention;

[0036] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0037] Figure 7 This is a schematic diagram of the internal structure of the first disc of the present invention;

[0038] Figure 8 This is a schematic diagram of the internal structure of the second disc of the present invention;

[0039] Fig. 9 It is a schematic diagram of the internal structure of the heat storage chamber of the present invention.

[0040] In the figure: 1, device body; 2, air inlet pipe; 3, air outlet pipe; 4, heat preservation chamber; 5, flow divider; 6, first water tank; 7, heat exchange chamber; 8, heat exchange elbow; 9, pump; 10, cleaning mechanism; 1001, water spray pipe; 1002, second pipe; 1003, fixed shell; 1004, driving motor; 1005, reciprocating screw; 1006, cleaning plate; 1007, pulley; 1008, worm; 1009, belt; 1010, rotating shaft; 10 11. worm gear; 1012. first disc; 1013. second disc; 1014. accommodating groove; 1015. striking hammer; 11. heat storage chamber; 12. second water tank; 13. connecting groove; 14. square tube; 15. first pipeline; 16. drainage mechanism; 1601. shell; 1602. impeller; 1603. rotating rod; 1604. connecting rod; 1605. fan blade; 1606. scraper; 1607. adsorption plate; 17. exhaust hole; 18. guide plate. DETAILED DESCRIPTION

[0041] 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.

[0042] Example 1: Please refer to Figure 1-Figure 9 As shown, the present invention provides a technical solution: an electric furnace exhaust gas recovery heat exchange heating device, comprising a device body 1, an air inlet pipe 2 is arranged on the side wall of the device body 1, and an air outlet pipe 3 is arranged on the side wall of the device body 1 away from one end of the air inlet pipe 2, and a pump 9 is fixedly installed on the upper end of the device body 1.

[0043] This technical solution utilizes the setting of the pump 9. When in use, the air intake pipe 2 is connected to the smoke exhaust pipe of the electric furnace through a pipe, so that the exhaust gas enters the device body 1 from the air intake pipe 2. At this time, the pump 9 is started, and the pump 9 will transport the cold water in the second water tank 12 to the first water tank 6 through the heat exchange elbow 8, so that the exhaust gas can exchange heat with the cold water flowing through the heat exchange elbow 8. At this time, the temperature of the exhaust gas itself will be reduced, thereby realizing the cooling of the exhaust gas and the recovery of heat energy. Further, the exhaust gas will be discharged from the exhaust pipe 3 for the next step of processing.

[0044] Embodiment 2: The technical content disclosed in this embodiment is an improvement made on the basis of the above embodiment 1. When the existing equipment is in use, the exhaust gas has a short contact time with the spiral water pipe, which reduces the waste heat recovery efficiency. Figure 1-Figure 4 and Fig. 9As shown, a heat exchange component of a heat exchange device is disclosed, wherein a heat preservation chamber 4 is provided, which is opened in a device body 1, the heat preservation chamber 4 is connected to an air inlet pipe 2, and a diverter cover 5 is fixedly installed in the heat preservation chamber 4, and a first water tank 6 is fixedly installed in the diverter cover 5, a heat exchange chamber 7 is opened in the device body 1 at the side of the heat preservation chamber 4, a heat exchange elbow 8 is arranged in the heat exchange chamber 7, a heat storage chamber 11 is opened in the device body 1 at the side of the heat exchange chamber 7, the heat storage chamber 11 is connected to an air outlet pipe 3, and a second water tank 12 is fixedly installed in the heat storage chamber 11, a connecting groove 13 is opened on the second water tank 12, and a square tube 14 is fixedly connected to the side wall of the second water tank 12, and a first water tank 6 is fixedly installed on the square tube 14. A pipe 15, and the water inlet end of the first pipe 15 is connected to the water outlet end of the pump 9, and the water inlet end of the pump 9 is connected to the second water tank 12, the first water tank 6 is arranged in a circular ring structure, and the middle channel of the first water tank 6 is connected to the heat exchange chamber 7, and a drainage mechanism 16 for exhausting air is arranged in the middle channel of the first water tank 6, and the drainage mechanism 16 includes a shell 1601, the shell 1601 is fixedly arranged in the middle channel of the first water tank 6, an impeller 1602 is rotatably installed in the shell 1601, and the shaft end of the impeller 1602 is fixedly connected to a rotating rod 1603, and the end of the rotating rod 1603 away from the impeller 1602 penetrates and extends out of the shell 1601 and is fixed to the connecting rod 1604 The outer wall of the rotating rod 1603 extending out of the shell 1601 is fixedly nested with a fan blade 1605, and a scraper 1606 is fixedly arranged on the side wall of the connecting rod 1604. Two scrapers 1606 are symmetrically arranged about the connecting rod 1604, and the two scrapers 1606 are located between the diverter cover 5 and the first water tank 6, and the scrapers 1606 are all arranged in a rectangular frame structure, the upper end of the scraper 1606 is in contact with the inner wall of the diverter cover 5, and the bottom end of the scraper 1606 is in contact with the outer wall of the first water tank 6, and an adsorption plate 1607 is fixedly arranged in the middle of the scraper 1606, the diameter of the shell 1601 is smaller than the diameter of the middle channel of the first water tank 6, and the shell 1601 is connected to the heat exchange bend. The water outlet ends of the tube 8 are connected, and the shell 1601 is connected to the first water tank 6 through a pipeline. A guide plate 18 is fixedly connected to the heat exchange elbow 8, and two heat exchange elbows 8 are symmetrically arranged about the guide plate 18. The water inlet ends of the two heat exchange elbows 8 are connected to the square tube 14, and the water inlet end of the square tube 14 is connected to the first pipeline 15. The guide plate 18 is located in the heat exchange chamber 7, and the guide plate 18 is a conical structure, and the guide plate 18 corresponds to the shell 1601. An exhaust hole 17 is opened on the inner wall of the device body 1 between the heat exchange chamber 7 and the heat storage chamber 11, and the exhaust hole 17 connects the heat exchange chamber 7 and the heat storage chamber 11, and a control valve is arranged in the exhaust hole 17.

[0045] In this technical solution, Figure 4As shown, by utilizing the setting of the impeller 1602 and the rotating rod 1603, the impeller 1602 rotates under the impact of water, and then drives the fan blades 1605 and the scraper 1606 to rotate synchronously through the rotating rod 1603. The rotation of the fan blades 1605 drives the flow and discharge of the exhaust gas in the insulation chamber 4, thereby improving the overall heat exchange efficiency. At the same time, the scraper 1606 will scrape off the particulate impurities attached to the diverter hood 5 and the first water tank 6, avoiding blockage and performance degradation caused by the accumulation of impurities, reducing the frequency and difficulty of manual cleaning, and reducing maintenance costs.

[0046] Its use is as Figure 1-Figure 3 and Fig. 9 In the technical solution shown, the pump 9 first works to deliver the cold water in the second water tank 12 to the first pipe 15, so that the cold water flows from the first pipe 15 into the square pipe 14, and then flows from the square pipe 14 into the heat exchange elbow 8, and then the water in the heat exchange elbow 8 flows into the shell 1601, and finally flows from the shell 1601 into the first water tank 6;

[0047] Next, the exhaust gas enters the heat preservation chamber 4 through the air inlet pipe 2, and then passes through the filter holes on the flow divider 5 into the flow divider 5, and then enters the heat exchange chamber 7 through the middle channel of the first water tank 6. Further, the exhaust gas in the heat exchange chamber 7 passes through the exhaust hole 17, and the exhaust gas entering the heat storage chamber 11 passes through the connecting groove 13 on the second water tank 12, and then is discharged from the air outlet pipe 3.

[0048] When the exhaust gas enters the heat exchange chamber 7, it will first contact the guide plate 18, so that the particulate impurities on the exhaust gas adhere to the surface of the guide plate 18, and the guide plate 18 will guide the exhaust gas into the heat exchange chamber 7, so that the exhaust gas enters the heat exchange chamber 7 evenly under the guidance, and then exchanges heat with the heat exchange elbow 8. The heat energy released by the exhaust gas is effectively absorbed by the heat exchange elbow 8, and then the cold water flowing in the heat exchange elbow 8 is heated. The cold water circulates continuously in the heat exchange elbow 8, fully exchanges heat with the exhaust gas, and gradually heats up to become hot water;

[0049] Next, when the hot water in the heat exchange elbow 8 enters the shell 1601, it will impact the impeller 1602, so that the impeller 1602 drives the rotating rod 1603 to rotate, and the rotating rod 1603 drives the fan blade 1605 to rotate. The thrust generated by the rotation of the fan blade 1605 will attract more exhaust gas to flow in, thereby transporting the exhaust gas in the heat preservation chamber 4 to the heat exchange chamber 7. At the same time, the rotating rod 1603 will drive the connecting rod 1604 to rotate, so that the connecting rod 1604 drives the scraper 1606 and the adsorption plate 1607 to rotate synchronously, and the scraper 1606 will scrape off the impurities attached to the diverter hood 5 and the first water tank 6. Furthermore, the particles in the exhaust gas will adhere to the adsorption plate 1607, thereby preventing the filter holes on the diverter hood 5 from being blocked. When the heated hot water enters the first water tank 6, since the exhaust gas in the heat exchange chamber 7 contains a lot of heat, it will play a role in heat preservation, slowing down the temperature drop rate of the hot water in the first water tank 6.

[0050] Furthermore, the exhaust gas in the heat exchange chamber 7 will be discharged from the exhaust hole 17. The opening and closing of the exhaust hole 17 can be controlled by setting the control valve, thereby increasing the residence time of the exhaust gas in the heat exchange chamber 7 and improving the heat exchange efficiency. When the exhaust gas enters the heat storage chamber 11, it will pass through the connecting groove 13, so that the residual heat in the exhaust gas will be effectively transferred to the water in the second water tank 12, thereby preheating the water and avoiding the waste of heat energy.

[0051] Embodiment 3: The technical content disclosed in this embodiment is a further improvement based on the above-mentioned embodiments 1 and 2. When the heat exchange elbow 8 is used for a long time, the impurity particles attached to its surface will affect the heat exchange efficiency. In order to further solve this technical problem, the technical solution is as follows: Figure 5-Figure 8As shown, a cleaning component of a heat exchange device is disclosed, wherein a cleaning mechanism 10 is provided at the bottom end of a heat exchange chamber 7 below a heat exchange elbow 8, so as to clean attachments dropped on the bottom end of the heat exchange chamber 7, and the cleaning mechanism 10 comprises a water spray pipe 1001, the water spray pipe 1001 is fixedly provided at the top end of the heat exchange chamber 7, a second pipe 1002 is fixedly connected to the water spray pipe 1001, and an end of the second pipe 1002 away from the water spray pipe 1001 is fixedly connected to a first pipe 15, the water spray pipe 1001, the first pipe 15 and the second pipe 1002 are connected, and a valve is provided at the connection point between the first pipe 15 and the second pipe 1002, and the cleaning mechanism 10 is provided at the bottom end of the heat exchange chamber 7. The structure 10 also includes a fixed shell 1003, which is fixedly arranged on the side wall of the device body 1. A driving motor 1004 is fixedly installed in the fixed shell 1003. Two reciprocating screw rods 1005 are provided. The two reciprocating screw rods 1005 are rotatably arranged in the heat exchange chamber 7, and both ends of the two reciprocating screw rods 1005 are sleeved with worms 1008, and the outer side of the reciprocating screw rods 1005 on the opposite side of the worm 1008 is sleeved with a cleaning plate 1006, and two pulleys 1007 are provided. The two pulleys 1007 are rotatably arranged on the side wall of the device body 1, and the outer sides of the two pulleys 1007 are sleeved with belts 1009.

[0052] The two pulleys 1007 correspond to the reciprocating screw 1005 one by one, and the shaft ends of the two pulleys 1007 extend through the heat exchange chamber 7 and are fixedly connected to the reciprocating screw 1005, and the shaft end of one of the pulleys 1007 is fixedly connected to the output end of the drive motor 1004. Two rotating shafts 1010 are provided, and the two rotating shafts 1010 are symmetrically arranged in the heat exchange chamber 7 below the heat exchange elbow 8. Both ends of the rotating shafts 1010 are fixedly connected with worm wheels 1011, and two knocking components are provided on the two rotating shafts 1010. The reciprocating screw 1005 is fixedly connected to the worm 1008, and the worm 1008 is meshed with the worm wheel 1011. The reciprocating screw 1005 is threadedly meshed with the cleaning plate 1006. , and the bottom end of the cleaning plate 1006 is in contact with the inner wall of the heat exchange chamber 7, the knocking assembly includes a first disc 1012, a second disc 1013 and a knocking hammer 1015, the first disc 1012 is fixedly arranged on the outer wall of the rotating shaft 1010, and the second disc 1013 is fixedly connected to the rotating shaft 1010 on the side of the first disc 1012, the first disc 1012 and the second disc 1013 are both provided with a receiving groove 1014, and the receiving groove 1014 is rotatably connected with a knocking hammer 1015 through a torsion spring, and a plurality of knocking hammers 1015 are arranged in a circular array about the center point of the receiving groove 1014, and the number of knocking hammers 1015 on the second disc 1013 is greater than the number of knocking hammers 1015 on the first disc 1012.

[0053] In this technical solution, Figure 7 and Figure 8As shown, by utilizing the arrangement of the first disc 1012 and the second disc 1013, when the first disc 1012 and the second disc 1013 rotate, the centrifugal force generated will throw the knocking hammer 1015 out of the accommodating groove 1014, so that the knocking hammer 1015 strikes the bottom of the heat exchange chamber 7 when it contacts the bottom, thereby generating vibrations of different frequencies, causing impurities to move to one side, facilitating centralized cleaning and improving impurity removal efficiency.

[0054] Its use is as Figure 5 and Figure 6 According to the technical solution shown, when the heat exchange elbow 8 needs to be cleaned, the valve on the second pipe 1002 is opened, so that water flows from the second pipe 1002 into the water spray pipe 1001, and then is sprayed out from the water spray pipe 1001, thereby flushing the heat exchange elbow 8 and the guide plate 18, and flushing the attached impurities to the bottom of the heat exchange chamber 7. The water at the bottom of the heat exchange chamber 7 will gradually evaporate, leaving the impurities to be deposited at the bottom, thereby completing the cleaning process of the heat exchange elbow 8. Further, the drive motor 1004 is started, and the drive motor 1004 will drive the reciprocating screw 1005 to rotate, so that the reciprocating screw 1005 is threadedly engaged and drives the cleaning plate 1006 to move along the bottom of the heat exchange chamber 7 to scrape off the impurities. 05 will drive the worm 1008 to rotate, so that the worm 1008 engages and drives the worm wheel 1011 to rotate, and then drives the rotating shaft 1010 to rotate, so that the first disk 1012 and the second disk 1013 on the rotating shaft 1010 rotate at the same time. Under the action of centrifugal force, the knocking hammers 1015 in the first disk 1012 and the second disk 1013 will be thrown out, and then knock the bottom of the heat exchange chamber 7, so that the bottom of the heat exchange chamber 7 vibrates. Since the number of knocking hammers 1015 on the second disk 1013 is more than that on the first disk 1012, the knocking frequency of the knocking hammers 1015 on the second disk 1013 will be higher than the knocking frequency of the first disk 1012, so that the impurities in front of the cleaning plate 1006 gather together, which is convenient for subsequent cleaning.

[0055] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0056] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric furnace tail gas recovery heat exchange heating device, comprising a device body (1), a side wall of the device body (1) is provided with an air inlet pipe (2), a side wall of the device body (1) away from one end of the air inlet pipe (2) is provided with an air outlet pipe (3), and a pump (9) is fixedly installed on the upper end of the device body (1); It is characterized in that Also includes: A heat preservation chamber (4) is provided in the device body (1), the heat preservation chamber (4) is connected to the air inlet pipe (2), a flow divider (5) is fixedly installed in the heat preservation chamber (4), and a first water tank (6) is fixedly installed in the flow divider (5); A heat exchange chamber (7) is provided in the device body (1) on the side of the heat preservation chamber (4), a heat exchange elbow (8) is provided in the heat exchange chamber (7), and a cleaning mechanism (10) is provided at the bottom end of the heat exchange chamber (7) below the heat exchange elbow (8) to clean attachments dropped on the bottom end of the heat exchange chamber (7); A heat storage chamber (11) is provided in the device body (1) on the side of the heat exchange chamber (7), the heat storage chamber (11) is connected to the air outlet pipe (3), and a second water tank (12) is fixedly installed in the heat storage chamber (11), a connecting groove (13) is provided on the second water tank (12), and a square tube (14) is fixedly connected to the side wall of the second water tank (12), a first pipe (15) is provided on the square tube (14), and a water inlet end of the first pipe (15) is connected to a water outlet end of a pump (9), and the water inlet end of the pump (9) is connected to the second water tank (12).

2. The electric furnace tail gas recovery heat exchange heating device according to claim 1, characterized in that: The first water tank (6) is arranged in a circular ring structure, and the middle channel of the first water tank (6) is connected to the heat exchange chamber (7), and a drainage mechanism (16) for exhausting air is arranged in the middle channel of the first water tank (6).

3. The electric furnace tail gas recovery heat exchange heating device according to claim 2 is characterized in that: The drainage mechanism (16) comprises a housing (1601), an impeller (1602), a rotating rod (1603), a connecting rod (1604), a fan blade (1605), a scraper (1606) and an adsorption plate (1607); A housing (1601) is fixedly arranged in the middle channel of the first water tank (6), an impeller (1602) is rotatably mounted in the housing (1601), and a rotating rod (1603) is fixedly connected to the shaft end of the impeller (1602), one end of the rotating rod (1603) away from the impeller (1602) passes through and extends out of the housing (1601) and is fixedly connected to the connecting rod (1604), and a fan blade (1605) is fixedly nested and connected to the outer wall of the portion of the rotating rod (1603) extending out of the housing (1601); A scraper (1606) is fixedly arranged on the side wall of the connecting rod (1604), two scrapers (1606) are symmetrically arranged about the connecting rod (1604), and the two scrapers (1606) are both located between the diversion cover (5) and the first water tank (6), and the scrapers (1606) are all arranged in a rectangular frame structure, the upper end of the plate (1606) is in contact with the inner wall of the diversion cover (5), and the bottom end of the scraper (1606) is in contact with the outer wall of the first water tank (6), and an adsorption plate (1607) is fixedly arranged in the middle of the scraper (1606).

4. The electric furnace tail gas recovery heat exchange heating device according to claim 3 is characterized in that: The diameter of the shell (1601) is smaller than the diameter of the middle channel of the first water tank (6), and the shell (1601) is connected to the water outlet end of the heat exchange elbow (8), and the shell (1601) is connected to the first water tank (6) through a pipeline.

5. The electric furnace tail gas recovery heat exchange heating device according to claim 4, characterized in that: The heat exchange bend (8) is fixedly connected to a guide plate (18), and two heat exchange bends (8) are symmetrically arranged about the guide plate (18), the water inlet ends of the two heat exchange bends (8) are both connected to the square tube (14), and the water inlet end of the square tube (14) is connected to the first pipeline (15).

6. The electric furnace tail gas recovery heat exchange heating device according to claim 5, characterized in that: The guide plate (18) is located in the heat exchange chamber (7), and the guide plate (18) is arranged in a conical structure, and the guide plate (18) corresponds to the shell (1601), and an exhaust hole (17) is opened on the inner wall of the device body (1) between the heat exchange chamber (7) and the heat storage chamber (11), and the exhaust hole (17) communicates with the heat exchange chamber (7) and the heat storage chamber (11), and a control valve is arranged in the exhaust hole (17).

7. The electric furnace tail gas recovery heat exchange heating device according to claim 1, characterized in that: The cleaning mechanism (10) comprises a water spray pipe (1001) and a second pipe (1002); A water spray pipe (1001) is fixedly arranged at the top end of the heat exchange chamber (7); a second pipe (1002) is fixedly connected to the water spray pipe (1001); and an end of the second pipe (1002) away from the water spray pipe (1001) is fixedly connected to the first pipe (15); the water spray pipe (1001), the first pipe (15) and the second pipe (1002) are connected; and a valve is arranged at the connection point between the first pipe (15) and the second pipe (1002).

8. The electric furnace tail gas recovery heat exchange heating device according to claim 7, characterized in that: The cleaning mechanism (10) further comprises a fixed housing (1003), a driving motor (1004), a reciprocating screw (1005), a cleaning plate (1006), a pulley (1007), a worm (1008), a belt (1009) and a rotating shaft (1010); A fixed shell (1003) is fixedly arranged on a side wall of the device body (1), and a driving motor (1004) is fixedly installed in the fixed shell (1003); Two reciprocating screws (1005) are provided, and the two reciprocating screws (1005) are both rotatably arranged in the heat exchange chamber (7), and both ends of the two reciprocating screws (1005) are sleeved with worms (1008), and a cleaning plate (1006) is sleeved and connected to the outer side of the reciprocating screw (1005) on the side opposite to the worm (1008); There are two pulleys (1007), both of which are rotatably arranged on the side wall of the device body (1), and the outer sides of the two pulleys (1007) are sleeved with belts (1009), the two pulleys (1007) correspond to the reciprocating screw rod (1005) one by one, and the shaft ends of the two pulleys (1007) extend into the heat exchange chamber (7) and are fixedly connected to the reciprocating screw rod (1005), and the shaft end of one of the pulleys (1007) is fixedly connected to the output end of the drive motor (1004); Two rotating shafts (1010) are provided, and the two rotating shafts (1010) are symmetrically arranged in the heat exchange cavity (7) below the heat exchange elbow (8), and both ends of the rotating shaft (1010) are fixedly connected with a worm gear (1011), and two striking components are symmetrically arranged on the two rotating shafts (1010).

9. The electric furnace tail gas recovery heat exchange heating device according to claim 8, characterized in that: The reciprocating screw (1005) is fixedly connected to the worm (1008), and the worm (1008) is meshed with the worm wheel (1011). The reciprocating screw (1005) is threadedly meshed with the cleaning plate (1006), and the bottom end of the cleaning plate (1006) is in contact with the inner wall of the heat exchange chamber (7).

10. The electric furnace tail gas recovery heat exchange heating device according to claim 8, characterized in that: The striking assembly comprises a first disc (1012), a second disc (1013) and a striking hammer (1015); the first disc (1012) is fixedly arranged on the outer wall of the rotating shaft (1010); the second disc (1013) is fixedly connected to the rotating shaft (1010) on the side of the first disc (1012); a receiving groove (1014) is provided on the first disc (1012) and the second disc (1013); a striking hammer (1015) is rotatably connected in the receiving groove (1014) via a torsion spring; a plurality of striking hammers (1015) are arranged in a circular array about the center point of the receiving groove (1014); and the number of striking hammers (1015) on the second disc (1013) is greater than the number of striking hammers (1015) on the first disc (1012).

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