Waste heat recycling device of heat accumulating type heating furnace

Abstract

The invention relates to the technical field of heat accumulating type heating furnaces, and discloses a heat accumulating type heating furnace waste heat recycling device which comprises a furnace body assembly, one side of the furnace body assembly is fixedly connected with a preheating assembly, the other side of the preheating assembly is fixedly connected with a flow guide filtering assembly, and the front face of the preheating assembly is fixedly connected with a fan assembly. The furnace body assembly comprises a furnace main body, and a furnace door is installed on the top of the front face of the furnace main body. Gas enters a first gas guide square pipe through a second flue gas transfer chamber and then enters the inner side of a third gas guide square pipe through the first gas guide square pipe and a second gas guide square pipe, and flue gas continues to rise along the third gas guide square pipe and enters the inner side of a flow dividing assembly after being filtered by a filter assembly main body; and then the gas is shunted by the flow guide notch at the bottom of the flow guide block and is exhausted through the arc-shaped exhaust plate and the exhaust hole, so that the exhausted gas is effectively filtered, the pollution to the surrounding environment is avoided, and the environment-friendly use of the equipment is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal storage type heating furnaces, and more particularly to a device for recovering and utilizing waste heat from thermal storage type heating furnaces. Background Art

[0002] The development of regenerative heating furnaces reflects the continuous evolution of industrial heating technology toward high efficiency, energy conservation, and environmental protection. Early heating furnaces generally suffered from low thermal efficiency and high energy consumption. It wasn't until the early 20th century that the concept of regenerative combustion revolutionized the industry. Initially used in glass kilns, the regenerative chamber structure, which recovered flue gas waste heat through a brick grid, laid the foundation for the technology.

[0003] After the 1980s, with breakthroughs in high-temperature ceramic materials, regenerative combustion technology entered a period of rapid development. Japan and Europe pioneered the development of honeycomb ceramic regenerators, which boast large surface areas and high heat exchange efficiency. This allowed combustion air preheating temperatures to exceed 1000°C, resulting in fuel savings exceeding 30%. In the 1990s, upgrades to reversing valves and control systems drove the large-scale application of this technology in steel rolling mill heating furnaces. For example, Japan's NKK Fukuyama Works commissioned the first fully regenerative heating furnace, achieving a thermal efficiency boost of 75%.

[0004] Deficiencies in existing technology: Existing regenerative heating furnaces recover waste heat from flue gas through heat conduction to heat the gas entering the furnace body. However, during use, the existing waste heat utilization device results in low gas heating efficiency, making it difficult to ensure waste heat utilization efficiency. In addition, the heated flue gas will pollute the surrounding environment, making it inconvenient to use. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a heat storage type heating furnace waste heat recovery and utilization device to solve the problems existing in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a heat storage type heating furnace waste heat recovery and utilization device, comprising a furnace body assembly, one side of the furnace body assembly is fixedly connected to a preheating assembly, the other side of the preheating assembly is fixedly connected to a diversion filter assembly, the front of the preheating assembly is fixedly connected to a fan assembly, the furnace body assembly comprises a furnace body main body, a furnace door is installed on the top of the front of the furnace body main body, a heating chamber is provided at the bottom of the front of the furnace body main body, and a smoke exhaust hole is provided on one side of the furnace body main body.

[0007] Furthermore, the preheating assembly includes a first flue gas transfer chamber, a first U-shaped tube is fixedly connected to one side of the first flue gas transfer chamber, a second U-shaped tube is fixedly connected to one side of the first flue gas transfer chamber, a third U-shaped tube is fixedly connected to one side of the furnace body, an air intake square tube is fixedly connected to the other side of the first flue gas transfer chamber, and a heating flue gas tube is fixedly connected to the inner side of the air intake square tube.

[0008] Furthermore, the diversion filter assembly includes a second smoke transfer chamber, a positioning hole is provided on one side of the second smoke transfer chamber, the other side of the positioning hole is fixedly connected to the first air guide square tube, the other side of the first air guide square tube is fixedly connected to the second air guide square tube, the top of the second air guide square tube is fixedly connected to the third air guide square tube, the top of the third air guide square tube is fixedly connected to the diversion assembly, arc-shaped exhaust plates are provided on both sides of the diversion assembly, exhaust holes are provided on the outer side of the arc-shaped exhaust plate, the other side of the third air guide square tube is installed with a filter assembly body, the other side of the filter assembly body is fixedly connected to a limiting plate, the bottom of the second air guide square tube is provided with a drop groove, the bottom of the second air guide square tube is fixedly connected to a collection box, and a sealing slide is provided on the other side of the collection box, and the top and bottom of the sealing slide are fixedly connected to a convex slider.

[0009] Furthermore, the diversion assembly includes a diversion box, a first square groove is opened on both sides of the diversion box, a second square groove is opened on the bottom of the diversion box, a guide block is fixedly connected to the bottom of the diversion box, and diversion gaps are opened on both sides of the bottom of the guide block.

[0010] Furthermore, the inner and outer diameters of the first U-shaped tube, the second U-shaped tube and the third U-shaped tube are the same, the diameter of the first U-shaped tube is gap-matched with the diameter of the smoke exhaust hole, and the diameter of the heating flue gas pipe is matched with the diameter of the positioning hole.

[0011] Furthermore, the cross-sectional dimensions of the inner side of the first air-guiding square tube and the cross-sectional dimensions of the other side of the second air-guiding square tube are clearance matched, the cross-sectional dimensions of the top of the second air-guiding square tube and the cross-sectional dimensions of the bottom of the third air-guiding square tube are clearance matched, and a square groove is provided on the other side of the third air-guiding square tube, and the dimensions of the square groove of the third air-guiding square tube and the cross-sectional dimensions of the filter assembly body are clearance matched.

[0012] Furthermore, a sealing groove is provided on the other side of the collection box, and convex grooves are provided on the top and bottom of the sealing groove of the collection box. The size of the sealing groove of the collection box is clearance-matched with the size of the sealing slide plate, and the cross-sectional size of the convex groove of the collection box is clearance-matched with the cross-sectional size of the convex slider.

[0013] Furthermore, the size of the inner top of the diversion box is the same as the size of the top of the guide block, the cross-sectional size of the second square groove and the size of the outer side of the top of the third air guide square tube match each other, and the cross-sectional size of the first square groove is the same as the internal size of the side of the arc exhaust plate close to the diversion component.

[0014] The technical effects and advantages of the present invention are as follows: 1. In the present invention, during the heating process of the furnace assembly, heated flue gas passes through the first, second, and third U-shaped tubes into the first flue gas transfer chamber, then through the heating flue gas pipe to the second flue gas transfer chamber. At this point, the fan assembly operates to blow gas into the air intake square tube, which then enters the heating chamber to provide oxygen for heating the furnace assembly. Furthermore, as the gas passes through the heating flue gas pipe, the flue gas inside the heating flue gas pipe effectively heats the gas passing outside the heating flue gas pipe, ensuring that the temperature of the gas entering the furnace assembly is elevated, effectively preheating the gas entering the device. This allows the device to efficiently utilize thermal energy, avoids thermal energy waste, and ensures that the device effectively heats the internal objects.

[0015] 2. In this invention, gas passes through the second flue gas transfer chamber and into the first gas-guiding square tube. Then, it passes through the first and second gas-guiding square tubes and into the inside of the third gas-guiding square tube. The flue gas continues to rise along the third gas-guiding square tube, is filtered by the filter assembly body, enters the inside of the diversion assembly, and is then diverted through the diversion notch at the bottom of the diversion block and discharged through the curved exhaust plate and exhaust holes. This effectively filters the exhaust gas, avoids pollution to the surrounding environment, and ensures the environmentally friendly use of the equipment.

[0016] 3. In this invention, the gas filtered by the filter assembly body falls through the drop chute into the collection box. After a long period of accumulation, the impurities inside the collection box can be effectively removed by pulling out the sealing slide. Then, returning the sealing slide to its original position, the filtration process can be resumed, facilitating the effective removal of filtered impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 It is a structural schematic diagram of the furnace assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the preheating component of the present invention; Figure 5 This is a schematic structural diagram of the flow guide filter assembly of the present invention; Figure 6 It is a schematic structural diagram of the diversion component of the present invention.

[0018] The accompanying drawings are marked as follows: 1. furnace body assembly; 101. furnace body; 102. furnace door; 103. heating chamber; 104. smoke exhaust hole; 2. preheating assembly; 201. first flue gas transfer chamber; 202. first U-shaped tube; 203. second U-shaped tube; 204. third U-shaped tube; 205. air intake square tube; 206. heating flue gas pipe; 3. diversion filter assembly; 301. second flue gas transfer chamber; 302. positioning hole; 303. first air guide square tube; 304. Second air-guiding square tube; 305, third air-guiding square tube; 306, diversion assembly; 3061, diversion box; 3062, first square groove; 3063, second square groove; 3064, guide block; 3065, guide notch; 307, arc-shaped exhaust plate; 308, exhaust hole; 309, filter assembly body; 3010, limit plate; 3011, drop chute; 3012, collection box; 3013, sealing slide; 3014, convex slider; 4, fan assembly. DETAILED DESCRIPTION

[0019] The technical solutions of the present invention will be described clearly and completely below in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The heat storage type heating furnace waste heat recovery and utilization device involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] Reference Figures 1 to 6 The present invention provides a waste heat recovery and utilization device for a thermal storage heating furnace, including a furnace body assembly 1, a preheating assembly 2 is fixedly connected to one side of the furnace body assembly 1, a diversion filter assembly 3 is fixedly connected to the other side of the preheating assembly 2, and a fan assembly 4 is fixedly connected to the front of the preheating assembly 2. The furnace body assembly 1 includes a furnace body 101, a furnace door 102 is installed on the top of the front of the furnace body 101, a heating chamber 103 is opened at the bottom of the front of the furnace body 101, and a smoke exhaust hole 104 is opened on one side of the furnace body 101.

[0021] In a preferred embodiment, the preheating component 2 includes a first flue gas transfer chamber 201, one side of the first flue gas transfer chamber 201 is fixedly connected to a first U-shaped tube 202, one side of the first flue gas transfer chamber 201 is fixedly connected to a second U-shaped tube 203, one side of the furnace body 101 is fixedly connected to a third U-shaped tube 204, the other side of the first flue gas transfer chamber 201 is fixedly connected to an air intake square tube 205, and the inner side of the air intake square tube 205 is fixedly connected to a heating flue gas pipe 206; during the heating process of the furnace body component 1, the heated flue gas enters the first flue gas transfer chamber through the first U-shaped tube 202, the second U-shaped tube 203 and the third U-shaped tube 204. The air passes through the heating flue gas pipe 206 and then enters the second flue gas transfer chamber 301. At this time, the air is blown into the air inlet square tube 205 through the fan assembly 4, and then enters the heating chamber 103 to provide oxygen for the heating of the furnace body assembly 1. When the gas passes through the heating flue gas pipe 206, the flue gas inside the heating flue gas pipe 206 will effectively heat the gas passing through the outside of the heating flue gas pipe 206, ensuring that the temperature of the gas entering the furnace body assembly 1 is increased, so that the gas entering the equipment is effectively preheated, so that the equipment can efficiently utilize thermal energy, avoid waste of thermal energy, and ensure that the equipment effectively heats the internal objects.

[0022] In a preferred embodiment, the diversion filter assembly 3 includes a second smoke transfer chamber 301, a positioning hole 302 is provided on one side of the second smoke transfer chamber 301, and the other side of the positioning hole 302 is fixedly connected to the first air guide square tube 303, the other side of the first air guide square tube 303 is fixedly connected to the second air guide square tube 304, the top of the second air guide square tube 304 is fixedly connected to the third air guide square tube 305, the top of the third air guide square tube 305 is fixedly connected to the diversion assembly 306, arc-shaped exhaust plates 307 are provided on both sides of the diversion assembly 306, and exhaust holes 308 are provided on the outer side of the arc-shaped exhaust plate 307. A filter assembly body 309 is installed on the other side of the third air guide square tube 305, and a limiting plate 3010 is fixedly connected to the other side of the filter assembly body 309. A drop groove is provided at the bottom of the second air guide square tube 304. 3011, the bottom of the second air-guiding square tube 304 is fixedly connected to a collecting box 3012, and a sealing slide 3013 is installed on the other side of the collecting box 3012, and the top and bottom of the sealing slide 3013 are fixedly connected to a convex slider 3014; the gas passes through the second flue gas transfer chamber 301 into the first air-guiding square tube 303, and then passes through the first air-guiding square tube 303 and the second air-guiding square tube 304 into the inner side of the third air-guiding square tube 305, and the flue gas continues to rise along the third air-guiding square tube 305, is filtered by the filter component main body 309, enters the inner side of the diversion component 306, and then passes through the diversion of the guide notch 3065 at the bottom of the guide block 3064 and is discharged through the arc exhaust plate 307 and the exhaust hole 308, so that the exhausted gas is effectively filtered, avoiding pollution to the surrounding environment, and ensuring the environmentally friendly use of the equipment.

[0023] In a preferred embodiment, the diversion assembly 306 includes a diversion box 3061, a first square groove 3062 is provided on both sides of the diversion box 3061, a second square groove 3063 is provided at the bottom of the diversion box 3061, a guide block 3064 is fixedly connected to the bottom of the diversion box 3061, and guide notches 3065 are provided on both sides of the bottom of the guide block 3064; the gas filtered by the filter assembly main body 309 will fall into the interior of the collection box 3012 through the falling groove 3011. After a long period of accumulation, the impurities inside the collection box 3012 can be effectively cleared by pulling out the sealing slide 3013, and then the sealing slide 3013 is returned to its original position, and the filtering work can be continued, which is convenient for effectively removing the filtered impurities.

[0024] In a preferred embodiment, the inner and outer diameters of the first U-shaped tube 202, the second U-shaped tube 203 and the third U-shaped tube 204 are the same, the diameter of the first U-shaped tube 202 and the diameter of the smoke exhaust hole 104 are gap-matched, and the diameter of the heating flue gas pipe 206 and the diameter of the positioning hole 302 are matched with each other.

[0025] In a preferred embodiment, the cross-sectional dimensions of the inner side of the first air-guiding square tube 303 are clearance-matched with the cross-sectional dimensions of the other side of the second air-guiding square tube 304, the cross-sectional dimensions of the top of the second air-guiding square tube 304 are clearance-matched with the cross-sectional dimensions of the bottom of the third air-guiding square tube 305, a square groove is provided on the other side of the third air-guiding square tube 305, and the dimensions of the square groove of the third air-guiding square tube 305 are clearance-matched with the cross-sectional dimensions of the filter assembly main body 309.

[0026] In a preferred embodiment, a sealing groove is provided on the other side of the collection box 3012, and convex grooves are provided on the top and bottom of the sealing groove of the collection box 3012. The size of the sealing groove of the collection box 3012 and the size of the sealing slide 3013 are clearance matched, and the cross-sectional size of the convex groove of the collection box 3012 and the cross-sectional size of the convex slider 3014 are clearance matched.

[0027] In a preferred embodiment, the size of the inner top of the diversion box 3061 is the same as the size of the top of the guide block 3064, the cross-sectional size of the second square groove 3063 and the size of the outer top of the third air guide square tube 305 cooperate with each other, and the cross-sectional size of the first square groove 3062 is the same as the internal size of the side of the arc exhaust plate 307 close to the diversion component 306.

[0028] The working principle of the present invention is as follows: during the heating process of the furnace body assembly 1, the heated flue gas enters the first flue gas transfer chamber 201 through the first U-shaped tube 202, the second U-shaped tube 203 and the third U-shaped tube 204, and then enters the second flue gas transfer chamber 301 through the heating flue gas pipe 206. At this time, the fan assembly 4 works to blow gas into the air inlet square tube 205, and then enters the heating chamber 103 to provide oxygen for the heating of the furnace body assembly 1. When the gas passes through the heating flue gas pipe 206, the flue gas inside the heating flue gas pipe 206 will effectively heat the gas passing through the outside of the heating flue gas pipe 206, ensuring that the temperature of the gas entering the furnace body assembly 1 is increased, so that the gas entering the equipment is effectively preheated, so that the equipment can efficiently utilize thermal energy, avoid waste of thermal energy, and ensure that the equipment effectively heats the internal objects; The gas passes through the second flue gas transfer chamber 301 and enters the first gas guiding square tube 303, then passes through the first gas guiding square tube 303 and the second gas guiding square tube 304 and enters the inner side of the third gas guiding square tube 305. The flue gas continues to rise along the third gas guiding square tube 305, is filtered by the filter assembly main body 309, enters the inner side of the diversion assembly 306, and then is diverted through the diversion notch 3065 at the bottom of the guide block 3064 and discharged through the arc-shaped exhaust plate 307 and the exhaust hole 308. This effectively filters the exhausted gas, avoids pollution to the surrounding environment, and ensures the environmentally friendly use of the equipment. The gas filtered by the filter component body 309 falls into the interior of the collection box 3012 through the drop groove 3011. After a long period of accumulation, the impurities inside the collection box 3012 can be effectively removed by pulling out the sealing slide 3013, and then the sealing slide 3013 is returned to its original position to continue the filtering work, which is convenient for the effective removal of the filtered impurities.

[0029] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change. Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict. Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heat storage type heating furnace waste heat recovery and utilization device, comprising a furnace body assembly (1), characterized in that: A preheating assembly (2) is fixedly connected to one side of the furnace body assembly (1), a flow guide filter assembly (3) is fixedly connected to the other side of the preheating assembly (2), a fan assembly (4) is fixedly connected to the front of the preheating assembly (2), the furnace body assembly (1) comprises a furnace body (101), a furnace door (102) is installed on the top of the front of the furnace body (101), a heating chamber (103) is provided at the bottom of the front of the furnace body (101), and a smoke exhaust hole (104) is provided on one side of the furnace body (101).

2. The thermal storage type heating furnace waste heat recovery and utilization device according to claim 1, characterized in that: The preheating assembly (2) comprises a first flue gas transfer chamber (201), a first U-shaped tube (202) is fixedly connected to one side of the first flue gas transfer chamber (201), a second U-shaped tube (203) is fixedly connected to one side of the first flue gas transfer chamber (201), a third U-shaped tube (204) is fixedly connected to one side of the furnace body (101), an air intake square tube (205) is fixedly connected to the other side of the first flue gas transfer chamber (201), and a heating flue gas tube (206) is fixedly connected to the inner side of the air intake square tube (205).

3. The thermal storage heating furnace waste heat recovery and utilization device according to claim 2, characterized in that: The flow guide filter assembly (3) comprises a second smoke transfer chamber (301), a positioning hole (302) is provided on one side of the second smoke transfer chamber (301), a first air guide square tube (303) is fixedly connected to the other side of the positioning hole (302), a second air guide square tube (304) is fixedly connected to the other side of the first air guide square tube (303), a third air guide square tube (305) is fixedly connected to the top of the second air guide square tube (304), a flow diversion assembly (306) is fixedly connected to the top of the third air guide square tube (305), and arc-shaped exhaust plates (307) are provided on both sides of the flow diversion assembly (306). An exhaust hole (308) is provided on the outer side of the arc-shaped exhaust plate (307); a filter assembly body (309) is installed on the other side of the third air-guiding square tube (305); a limit plate (3010) is fixedly connected to the other side of the filter assembly body (309); a drop groove (3011) is provided on the bottom of the second air-guiding square tube (304); a collection box (3012) is fixedly connected to the bottom of the second air-guiding square tube (304); a sealing slide (3013) is installed on the other side of the collection box (3012); and a convex slider (3014) is fixedly connected to the top and bottom of the sealing slide (3013).

4. The thermal storage type heating furnace waste heat recovery and utilization device according to claim 3, characterized in that: The diversion assembly (306) comprises a diversion box (3061), first square grooves (3062) are provided on both sides of the diversion box (3061), a second square groove (3063) is provided on the bottom of the diversion box (3061), a guide block (3064) is fixedly connected to the bottom of the diversion box (3061), and guide notches (3065) are provided on both sides of the bottom of the guide block (3064).

5. The thermal storage heating furnace waste heat recovery and utilization device according to claim 4, characterized in that: The inner and outer diameters of the first U-shaped tube (202), the second U-shaped tube (203), and the third U-shaped tube (204) are the same; the diameter of the first U-shaped tube (202) and the diameter of the smoke exhaust hole (104) are clearance-matched; and the diameter of the heating smoke tube (206) and the diameter of the positioning hole (302) are mutually matched.

6. The thermal storage heating furnace waste heat recovery and utilization device according to claim 4, characterized in that: The cross-sectional dimensions of the inner side of the first air-guiding square tube (303) and the cross-sectional dimensions of the other side of the second air-guiding square tube (304) are clearance matched, the cross-sectional dimensions of the top of the second air-guiding square tube (304) and the cross-sectional dimensions of the bottom of the third air-guiding square tube (305) are clearance matched, a square groove is provided on the other side of the third air-guiding square tube (305), and the dimensions of the square groove of the third air-guiding square tube (305) and the cross-sectional dimensions of the filter assembly body (309) are clearance matched.

7. The thermal storage type heating furnace waste heat recovery and utilization device according to claim 4, characterized in that: A sealing groove is provided on the other side of the collection box (3012), and convex grooves are provided at the top and bottom of the sealing groove of the collection box (3012). The size of the sealing groove of the collection box (3012) and the size of the sealing slide plate (3013) are clearance matched, and the cross-sectional size of the convex groove of the collection box (3012) and the cross-sectional size of the convex slide block (3014) are clearance matched.

8. The thermal storage heating furnace waste heat recovery and utilization device according to claim 4, characterized in that: The size of the inner top of the diversion box (3061) is the same as the size of the top of the guide block (3064), the cross-sectional size of the second square groove (3063) and the size of the outer side of the top of the third air guide square tube (305) are matched with each other, and the cross-sectional size of the first square groove (3062) is the same as the internal size of the side of the arc-shaped exhaust plate (307) close to the diversion component (306).

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