Device for recovering waste heat in boiler during household garbage incineration

Abstract

The utility model belongs to the technical field of waste heat recovery, and particularly relates to a waste heat recovery device in a boiler during household garbage incineration, which comprises a smoke exhaust pipe. The middle part of the smoke exhaust pipe is fixedly connected with a plurality of groups of smoke outlet pipes; a recycling box is fixedly connected to the middles of the multiple sets of smoke outlet pipes. A water pipe is fixedly connected to the middle of the recycling box; two ends of the water pipe are fixedly connected outside the recycling box; the middle part of the first flow guide cover is fixedly connected with a plurality of groups of first flow guide covers; two first flow guide pipes are fixedly connected to the top of the first flow guide cover; the two first flow guide pipes are oppositely arranged; the two first flow guide pipes are obliquely arranged; the middle part of the water pipe is fixedly connected with multiple groups of second flow guide covers; a plurality of groups of second flow guide covers are fixedly connected to the top of the first flow guide pipe; by means of the structure, smoke is collected in the recycling box to heat and use water, heat in the boiler can be effectively utilized and recycled, and waste generated by heat discharge in the household garbage incineration process is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery, in particular to a waste heat recovery device in a boiler during the incineration of domestic waste. Background Art

[0002] Domestic waste refers to the solid waste generated in daily life. The composition of domestic waste is very complex, including organic matter, inorganic matter, recyclables and hazardous substances.

[0003] In the existing technology, incineration of domestic waste can be beneficial to environmental protection. Domestic waste incineration is a method of treating domestic waste by high-temperature oxidation. Domestic waste is collected and transported to an incineration plant, first crushed, and then put into an incinerator for high-temperature incineration.

[0004] During the incineration process of domestic waste, heat will be released into the boiler in the form of flue gas. The high-temperature flue gas carries a large amount of thermal energy, which is easily wasted if it is directly discharged into the atmosphere.

[0005] To this end, the utility model provides a waste heat recovery device in a boiler during the incineration of domestic waste. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: the utility model is a waste heat recovery device in a boiler during the incineration of domestic waste, comprising a smoke exhaust pipe; a plurality of smoke exhaust pipes are fixedly connected to the middle of the smoke exhaust pipe; a recovery box is fixedly connected to the middle of the plurality of smoke exhaust pipes; a water pipe is fixedly connected to the middle of the recovery box; both ends of the water pipe are fixedly connected to the outside of the recovery box; a plurality of first flow guide covers are fixedly connected to the middle of the water pipe; two first flow guide pipes are fixedly connected to the top of the first flow guide cover; the two first flow guide pipes are arranged opposite to each other; the two first flow guide pipes are inclined Setting; multiple groups of second air guide covers are fixedly connected to the middle of the water pipe; multiple groups of second air guide covers are fixedly connected to the top of the first air guide pipe; two second air guide pipes are fixedly connected to the top of the second air guide cover; the two second air guide pipes are arranged opposite to each other; the two second air guide pipes are arranged at an angle; an air outlet pipe is fixedly connected to the top of the recovery box; through the above structure, the flue gas is collected inside the recovery box to heat the water and use it, which can effectively utilize the heat inside the boiler, recycle the heat, and effectively reduce the waste caused by heat discharge during the incineration of domestic waste.

[0008] Preferably, two storage boxes are fixedly connected to the side wall of the recycling box; the two storage boxes are arranged opposite to each other; a unwinding drum is rotatably connected to the middle of one of the storage boxes; a winding drum is rotatably connected to the middle of the other storage box; two through slots are provided on the side wall of the recycling box; a filter is installed in the middle of the unwinding drum; the other end of the filter is installed in the middle of the winding drum; the filter is arranged in the middle of the two through slots; through the above structure, the winding drum can effectively filter the smoke and reduce the discharge of particulate matter and impurities in the smoke.

[0009] Preferably, the side wall of the recycling box is fixedly connected to multiple motors; the output end of the motor passes through the side wall of the recycling box; the output end of the motor is rotatably connected to the second roller; the middle part of the second roller is fixedly connected to multiple groups of needle bars; multiple second rollers are arranged on the top of the winding drum; through the above-mentioned structure, the needle bars can effectively reduce the accumulation of impurities on the surface of the filter after long-term filtration, and effectively dredge the blocked position of the filter.

[0010] Preferably, one of the storage boxes is slidably connected to a plurality of groups of sliding rods in the middle; each two sliding rods form a group; the ends of the sliding rods are fixed with springs; the ends of the springs are fixed to the middle of the storage box; the other end of each group of sliding rods is rotatably connected to a third roller; through the above structure, the third roller can effectively compact the rolled filter screen, and can remove or reduce the air inside the rolled filter screen.

[0011] Preferably, a plurality of fixing rods are fixed to the bottom of the recovery box; a guide plate is fixed to the end of the fixing rod; the guide plate is V-shaped; through the above structure, the guide plate can guide the smoke entering the recovery box after the filter is blocked.

[0012] Preferably, two sponge pads are fixedly connected to the middle of the filter screen; the two sponge pads are arranged opposite to each other; through the above-mentioned structure, the sponge pads can effectively reduce the contact between the filter screen and the surface of the through groove during movement, and can reduce the wear problem on the surface of the filter screen.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model describes a waste heat recovery device for a boiler during the incineration of domestic waste. By collecting flue gas in a recovery box to heat water for use, the heat inside the boiler can be effectively utilized and recycled, thereby effectively reducing the waste caused by heat discharge during the incineration of domestic waste.

[0015] 2. The utility model describes a waste heat recovery device in a boiler during the incineration of domestic waste, which can effectively filter the flue gas through a winding drum, reduce the discharge of particulate matter and impurities in the flue gas, reduce the particles and impurities from floating inside the recovery box and adhering to the surface of the water pipe, and effectively reduce the long-term accumulation of particles and impurities on the surface of the water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a three-dimensional diagram of a waste heat recovery device in a boiler during the incineration of domestic waste in the utility model;

[0018] Figure 2 It is a structural diagram of the recycling box in the utility model;

[0019] Figure 3 It is a structural diagram of the filter screen in the utility model;

[0020] Figure 4 It is a structural diagram of the slide bar in the utility model;

[0021] Figure 5 This is a schematic structural diagram of the guide plate in the utility model;

[0022] Figure 6 This is a schematic structural diagram of the needle rod in the utility model;

[0023] In the figure: 1. Smoke exhaust pipe; 10. Smoke outlet pipe; 11. Recovery box; 12. Water pipe; 13. First air guide cover; 14. First air guide pipe; 15. Second air guide cover; 16. Second air guide pipe; 17. Exhaust pipe; 2. Storage box; 21. Unwinding drum; 22. Winding drum; 23. Filter; 24. Through slot; 3. Motor; 31. Second roller; 32. Needle bar; 4. Sliding rod; 41. Spring; 42. Third roller; 5. Fixed rod; 51. Guide plate; 6. Sponge pad. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figures 1 to 5As shown, the embodiment of the utility model is a waste heat recovery device in a boiler during the incineration of domestic waste, comprising a smoke exhaust pipe 1; a plurality of smoke exhaust pipes 10 are fixedly connected to the middle of the smoke exhaust pipe 1; a recovery box 11 is fixedly connected to the middle of the plurality of smoke exhaust pipes 10; a water pipe 12 is fixedly connected to the middle of the recovery box 11; both ends of the water pipe 12 are fixedly connected to the outside of the recovery box 11; a plurality of first flow guide covers 13 are fixedly connected to the middle of the water pipe 12; two first flow guide pipes 14 are fixedly connected to the top of the first flow guide cover 13; the two first flow guide pipes 14 are arranged opposite to each other; the two first flow guide pipes 14 are arranged obliquely; the water pipe 12 There are multiple sets of second air guide covers 15 fixedly connected to the middle part; multiple sets of second air guide covers 15 are fixedly connected to the top of the first air guide pipe 14; two second air guide pipes 16 are fixedly connected to the top of the second air guide cover 15; the two second air guide pipes 16 are arranged opposite to each other; the two second air guide pipes 16 are arranged obliquely; an air outlet pipe 17 is fixedly connected to the top of the recycling box 11; when working, the exhaust pipe 1 is installed on the boiler, and a large amount of high-temperature flue gas is generated during the burning of garbage inside the boiler. These flue gases are distributed to multiple smoke outlet pipes 10 through the exhaust pipe 1, and are discharged to the inside of the recycling box 11 through the multiple smoke outlet pipes 10, and the water pipe 12 is connected to the water pipe 12. The end is connected to a water pump, and the water flows inside the water pipe 12. The water pipe 12 is bent to increase the retention time of the water inside the water pipe 12. During the flow of the water inside the water pipe 12, the high-temperature flue gas discharged from the inside of the recovery box 11 causes the water temperature to rise. After the flue gas enters the inside of the recovery box 11, part of the flue gas enters and is stored inside the first guide cover 13, causing the flue gas to gather on the surface of the water pipe 12, and the water in the middle of the water pipe 12 is heated and discharged from the ends of the two first guide pipes 14. Because the size of the second guide cover 15 is larger than that of the first guide cover 13, the flue gas that has not entered the first guide cover 13 is discharged upward. When flowing, it enters the second air guide cover 15, heats the water flow in the middle of the water pipe 12 and then discharges it from the two ends of the second air guide pipes 16, and the flue gas is then discharged from the exhaust pipe 17. By collecting the flue gas in the recovery box 11 to heat the water and use it, the heat inside the boiler can be effectively utilized and recycled, effectively reducing the waste caused by heat discharge during the incineration of domestic waste, effectively reducing overall energy consumption, and achieving the effect of energy conservation and emission reduction. In addition, the first air guide cover 13 and the second air guide cover 15 increase the contact between the heat in the flue gas and the water pipe 12, which can improve the effect and efficiency of heat recovery.

[0026] like Figure 1 、 Figure 3 、 Figure 4As shown, the side wall of the recycling box 11 is fixed with two storage boxes 2; the two storage boxes 2 are arranged opposite to each other; a discharge drum 21 is rotatably connected to the middle of one of the storage boxes 2; a take-up drum 22 is rotatably connected to the middle of the other storage box 2; two through slots 24 are provided on the side wall of the recycling box 11; a filter 23 is installed in the middle of the discharge drum 21; the other end of the filter 23 is installed in the middle of the take-up drum 22; the filter 23 is set in the middle of the two through slots 24; when working, the take-up drum 22 is placed in the middle of the discharge drum 21, and then the filter 23 is passed through the middle of the two through slots 24 and connected to the middle of the take-up drum 22, and the smoke entering the inside of the recycling box 11 is filtered through the filter 23, so that impurities and particulate matter in the smoke adhere to the filter On the surface of the net 23, when the filter net 23 inside the recovery box 11 has finished filtering, the driver drives the winding drum 22 to rotate, so that the filter net rotates and is wound up in the middle of the winding drum 22, and at the same time, the clean filter net 23 is moved to the inside of the recovery box 11, and the flue gas can be effectively filtered by the winding drum 22, thereby reducing the discharge of particulate matter and impurities in the flue gas, reducing the particulate matter and impurities floating inside the recovery box 11 and adhering to the surface of the water pipe 12, effectively reducing the long-term accumulation of particulate matter and impurities on the surface of the water pipe 12, and reducing the problem of corrosion and wear of the surface of the water pipe 12 by impurities and particulates. By winding up the filter net 23, the frequency of replacing the filter net 23 can be effectively reduced, and the operation time of replacing the filter net 23 is reduced, making it more convenient and quick to use.

[0027] like Figure 3 、 Figure 5 、 Figure 6 As shown, the side wall of the recovery box 11 is fixedly connected to multiple motors 3; the output end of the motor 3 passes through the side wall of the recovery box 11; the output end of the motor 3 is rotatably connected to the second roller 31; the middle of the second roller 31 is fixedly connected to multiple groups of needle rods 32; multiple second rollers 31 are arranged on the top of the winding drum 22; when working, when the filter screen 23 filters the smoke, the motor 3 is energized and turned on to make the output end of the motor 3 rotate, and the second roller 31 is rotated simultaneously by controlling the rotation speed of the motor 3. When the second roller 31 rotates, the ends of multiple groups of needle rods 32 are inserted into the pores in the middle of the filter screen 23. The needle rods 32 can effectively reduce the accumulation of impurities on the surface of the filter screen 23 after long-term filtration, effectively dredge the blocked position of the filter screen 23, and restore the filtering function of the filter screen 23, so that the smoke can smoothly pass through the middle of the filter screen 23 and be discharged to the surface of the water pipe 12, reducing the adhesion and accumulation of smoke on the surface of the filter screen 23, thereby effectively improving the filtering effect of the smoke.

[0028] like Figure 3 and Figure 4As shown, one of the storage boxes 2 is slidably connected to a plurality of slide rods 4 in the middle; each two slide rods 4 form a group; the ends of the slide rods 4 are fixedly connected to a spring 41; the ends of the springs 41 are fixedly connected to the middle of the storage box 2; the other ends of each group of slide rods 4 are rotatably connected to a third roller 42; when working, when the winding drum 22 reels the used filter 23, the third roller 42 is used to fit the rewound filter 23, and the rewound filter 23 is pressed by the plurality of third rollers 42, and the rewound filter 23 is slowly rewound in the middle of the winding drum 22. The expansion causes the slide bar 4 to slide outward in the middle of the storage box 2. During the sliding process of the slide bar 4, the spring 41 elastically stretches the slide bar 4, and the third roller 42 can effectively compact the rolled-up filter screen 23, thereby excluding or reducing the air inside the rolled-up filter screen 23, and reducing the accumulation of impurities and particles on the surface of the filtered filter screen 23 to produce expansion, so that the filtered filter screen 23 is tightly rolled together, effectively reducing the volume of the rolled-up filter screen 23, effectively saving the space inside the storage box 2, and making full use of the storage space inside the storage box 2.

[0029] like Figure 5 As shown, a plurality of fixing rods 5 are fixedly connected to the bottom of the recovery box 11; the ends of the fixing rods 5 are fixedly connected to guide plates 51; the guide plates 51 are set in a V shape; when working, the guide plates 51 are supported on the bottom of the filter 23 by the fixing rods 5. When impurities accumulate in part of the filter 23 and become clogged, the smoke is guided by the guide plates 51, so that the smoke passes through the guide plates 51 and enters other positions of the filter 23. The guide plates 51 can guide the smoke entering the recovery box 11 after the filter 23 is clogged, so that the smoke can be evenly diffused, can fully contact the filter 23 and be filtered, and can make full use of the filter 23 in each area when the smoke enters the recovery box 11, so that the heat can be evenly distributed inside the recovery box 11, effectively reducing the energy loss caused by the temperature difference inside the recovery box 11, and effectively improving the heat recovery effect.

[0030] like Figure 5 As shown, two sponge pads 6 are fixedly connected to the middle of the filter screen 23; the two sponge pads 6 are arranged opposite to each other; during operation, when the filter screen 23 moves from the middle of the two through grooves 24, the two sponge pads 6 in the middle of the through grooves 24 fit with the surface of the filter screen 23. The sponge pads 6 can effectively reduce the contact between the filter screen 23 and the surface of the through grooves 24 during movement, reduce the wear problem on the surface of the filter screen 23, effectively reduce the wear of the filter screen 23 causing the pore size to increase or the surface to be uneven, thereby effectively reducing the problem of reduced filtering effect caused by the wear of the filter screen 23, effectively maintaining the integrity and filtering performance of the filter screen 23 during use, thereby improving the stability and reliability of the filtering effect.

[0031] During operation, the exhaust pipe 1 is installed on the boiler. During the burning of garbage inside the boiler, a large amount of high-temperature flue gas is generated. These flue gases are distributed to multiple flue pipes 10 through the exhaust pipe 1, and are discharged to the inside of the recovery box 11 through multiple flue pipes 10. One end of the water pipe 12 is connected to the water pump, and water flows inside the water pipe 12. The water pipe 12 is bent to increase the retention time of the water flow inside the water pipe 12. During the flow of water inside the water pipe 12, the high-temperature flue gas discharged into the recovery box 11 increases the water flow temperature. After the flue gas enters the recovery box 11, part of the flue gas enters and is stored inside the first guide cover 13, so that the flue gas gathers in the water pipe 12. 12 surface, heat the water flow in the middle of the water pipe 12 and then discharge it from the ends of the two first guide pipes 14. Because the second guide cover 15 is larger than the first guide cover 13, the smoke that has not entered the first guide cover 13 flows upward and enters the second guide cover 15. After heating the water flow in the middle of the water pipe 12, it is discharged from the ends of the two second guide pipes 16. The smoke is then discharged from the outlet pipe 17. The winding drum 22 is placed in the middle of the unwinding drum 21, and the filter screen 23 is connected to the middle of the winding drum 22 through the middle of the two through slots 24. The smoke entering the recovery box 11 is filtered through the filter screen 23, so that impurities and particulate matter in the smoke adhere to the surface of the filter screen 23. When the filter 23 inside the recycling box 11 has finished filtering, the winding drum 22 is driven by the driver to rotate, so that the filter is rotated and retracted in the middle of the winding drum 22, and at the same time, the clean filter 23 is moved to the inside of the recycling box 11. When the filter 23 filters the smoke, the motor 3 is powered on and turned on to rotate the output end of the motor 3. The second roller 31 is rotated at the same time by controlling the rotation speed of the motor 3. When the second roller 31 rotates, the ends of the multiple sets of needle rods 32 are inserted into the pores in the middle of the filter 23. When the winding drum 22 reels the used filter 23, the third roller 42 and the reeled filter 23 are rotated. The filter screen 23 is fitted by applying pressure to the rolled-up filter screen 23 through multiple sets of third rollers 42. The rolled-up filter screen 23 slowly expands in the middle of the winding drum 22, causing the slide bar 4 to slide outward in the middle of the storage box 2. When the slide bar 4 slides, it is elastically stretched by the spring 41, and the guide plate 51 is supported on the bottom of the filter screen 23 by the fixing rod 5. When impurities accumulate in part of the filter screen 23 and blockage occurs, the smoke is guided by the guide plate 51 to enter other positions of the filter screen 23 through the guide plate 51. When the filter screen 23 moves from the middle of the two through grooves 24, the two sponge pads 6 in the middle of the through grooves 24 fit the surface of the filter screen 23.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for a boiler during the incineration of domestic waste, comprising a smoke exhaust pipe (1); characterized in that: The middle of the smoke exhaust pipe (1) is fixedly connected to a plurality of smoke outlet pipes (10); the middle of the plurality of smoke outlet pipes (10) is fixedly connected to a recovery box (11); the middle of the recovery box (11) is fixedly connected to a water pipe (12); both ends of the water pipe (12) are fixedly connected to the outside of the recovery box (11); the middle of the water pipe (12) is fixedly connected to a plurality of first flow guide covers (13); the top of the first flow guide cover (13) is fixedly connected to two first flow guide pipes (14); the two first flow guide pipes (14) are arranged opposite to each other. The invention relates to a water pipe (12) having a plurality of second flow guide covers (15) fixedly connected to the middle of the water pipe (12); a plurality of second flow guide covers (15) fixedly connected to the top of the first flow guide pipe (14); two second flow guide pipes (16) fixedly connected to the top of the second flow guide cover (15); the two second flow guide pipes (16) are arranged opposite to each other; the two second flow guide pipes (16) are arranged tilted; and an air outlet pipe (17) is fixedly connected to the top of the recovery box (11).

2. The waste heat recovery device in a boiler during incineration of domestic waste according to claim 1, characterized in that: Two storage boxes (2) are fixedly connected to the side wall of the recycling box (11); the two storage boxes (2) are arranged opposite to each other; a reel-out drum (21) is rotatably connected to the middle of one of the storage boxes (2); a reel-up drum (22) is rotatably connected to the middle of the other storage box (2); two through slots (24) are provided on the side wall of the recycling box (11); a filter screen (23) is installed in the middle of the reel-out drum (21); the other end of the filter screen (23) is installed in the middle of the reel-up drum (22); the filter screen (23) is arranged in the middle of the two through slots (24).

3. The waste heat recovery device for a boiler during incineration of domestic waste according to claim 2, characterized in that: The side wall of the recycling box (11) is fixedly connected to a plurality of motors (3); the output end of the motor (3) passes through the side wall of the recycling box (11); the output end of the motor (3) is rotatably connected to a second roller (31); the middle of the second roller (31) is fixedly connected to a plurality of needle bars (32); and the plurality of second rollers (31) are arranged on the top of the winding drum (22).

4. The waste heat recovery device for a boiler during incineration of domestic waste according to claim 3, characterized in that: The middle of one of the storage boxes (2) is slidably connected to a plurality of groups of slide bars (4); each two slide bars (4) form a group; the ends of the slide bars (4) are fixedly connected to a spring (41); the ends of the springs (41) are fixedly connected to the middle of the storage box (2); the other end of each group of slide bars (4) is rotatably connected to a third roller (42).

5. The waste heat recovery device in a boiler during incineration of domestic waste according to claim 4, characterized in that: A plurality of fixing rods (5) are fixedly connected to the bottom of the recovery box (11); a guide plate (51) is fixedly connected to the end of the fixing rod (5); and the guide plate (51) is arranged in a V shape.

6. The waste heat recovery device for a boiler during incineration of domestic waste according to claim 5, characterized in that: Two sponge pads (6) are fixedly connected to the middle of the filter screen (23); the two sponge pads (6) are arranged opposite to each other.

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