Novel multifunctional flue gas waste heat recovery device for incineration boiler

Abstract

The utility model relates to the technical field of flue gas treatment, in particular to a novel multifunctional flue gas waste heat recovery device for an incineration boiler, and provides the novel multifunctional flue gas waste heat recovery device for the incineration boiler in order to solve the problems that the conversion efficiency of heat in flue gas is low, and the aging rate of equipment is high due to long-time flue gas scouring. Comprising an air inlet pipe, an exhaust nozzle is arranged at the upper end of the air inlet pipe, and a rotatable impeller is arranged in the air inlet pipe. When the impeller rotates, a structure that the exhaust nozzle swings in a reciprocating mode can be formed. A plurality of baffles for lengthening a bubble path are further arranged on the inner wall of the multifunctional box; the heat conversion efficiency can be improved, smoke scouring is reduced, abrasion is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of flue gas treatment and technology, and in particular to a novel multifunctional flue gas waste heat recovery device for an incineration boiler. Background Art

[0002] Incineration boilers are used to crush domestic garbage, non-recyclable waste, etc. Incineration boilers will generate a large amount of flue gas when working. The flue gas usually contains a certain amount of waste heat and other impurities, and the flue gas needs to be further cooled and impurity removed. At present, most flue gas waste heat recovery devices are in a closed space through water channels that intersect with the flue gas, so that the heat in the flue gas is transferred to the water channels for heating water. This process has the following defects, such as low heat conversion efficiency in the flue gas, and long-term flue gas flushing causes the equipment to age quickly. For this reason, a new multifunctional flue gas waste heat recovery device for incineration boilers is proposed to solve the above-mentioned problems. Utility Model Content

[0003] The utility model addresses the low heat conversion efficiency in flue gas and the rapid aging rate of equipment caused by long-term flue gas scouring. It provides a new multifunctional flue gas waste heat recovery device for incineration boilers, which can improve the heat conversion efficiency, reduce flue gas scouring, reduce wear, and extend the service life of the equipment, effectively solving the problems mentioned in the above background technology.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A new type of multifunctional flue gas waste heat recovery device for incineration boilers includes a base frame, a multifunctional box is provided at the upper end of the base frame, the multifunctional box is filled with an aqueous solution, a thermoelectric power generation plate is provided on the outer end face of the multifunctional box, and an air intake device is provided at the bottom of the multifunctional box. The air intake device includes an air intake pipe, an exhaust nozzle is provided at the upper end of the air intake pipe, and a rotatable impeller is provided inside the air intake pipe. When the impeller rotates, a structure that causes the exhaust nozzle to swing back and forth is formed; the inner wall of the multifunctional box is also provided with multiple baffles for lengthening the bubble path.

[0006] An adjusting mechanism is provided on the inner wall of the upper end of the multifunctional box. The adjusting mechanism comprises a rotatable threaded rod. When the threaded rod rotates, a structure is formed in which the baffle swings up and down.

[0007] The adjusting device also includes a rotatable handle, a threaded rod fixedly connected to the lower end surface of the handle, the lower end of the outer surface of the threaded rod is rotatably connected to a U-shaped frame slidably connected to the multi-function box, the lower ends of the U-shaped frames are respectively hinged with first connecting rods, the left and right inner walls of the multi-function box are respectively fixed with U-shaped seats, the baffles are respectively hinged on the corresponding U-shaped seats, and the other ends of the first connecting rods are respectively hinged on the corresponding baffles.

[0008] A plurality of staggered cutting strips are fixedly connected to the lower end surface of the baffle.

[0009] The intake pipe is fixed to the inner wall of the bottom end of the multi-function box, the upper end of the impeller is coaxially fixed with an incomplete inner gear ring, the upper end of the outer surface of the intake pipe is fixed with a connecting plate, the exhaust pipe is rotatably connected to the inner wall of the connecting plate, the lower end of the exhaust pipe is coaxially fixed with a driven spur gear, the front end of the outer surface of the driven spur gear is engaged with a large spur gear that matches the incomplete inner gear ring, the rear end of the outer surface of the driven spur gear is engaged with an idler gear, and the rear end of the outer surface of the idler gear is engaged with a small spur gear that matches the incomplete inner gear ring.

[0010] A bend is fixedly connected to the upper end surface of the exhaust pipe, a one-way valve is fixedly connected to the other end of the bend, and the exhaust nozzle is fixedly connected to the one-way valve.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] The air intake device is connected to the exhaust pipe of the incineration boiler, and can make the smoke ejected from the exhaust nozzle. Through the provided impeller, when the smoke passes through the air intake pipe, it can drive the impeller to rotate, and when the impeller rotates, it drives the exhaust nozzle to swing back and forth. When the exhaust nozzle rotates, it will evenly spray the smoke at the bottom of the multi-functional box, so that the smoke is evenly discharged at the bottom of the multi-functional box, improving heat conversion efficiency and smoke purification efficiency; through the provided thermoelectric power generation plate, thermal energy can be converted into electrical energy for storage; through the provided baffle, after the smoke enters the inner wall of the multi-functional box, it will float up under the action of its own buoyancy, and when floating up, it can contact the inclined baffle. The setting of the baffle can lengthen the path of the smoke in the multi-functional box, thereby lengthening the residence time of the smoke in the aqueous solution, and further removing heat and harmful gases in the smoke; the device can improve heat conversion efficiency, reduce smoke scouring, reduce wear, and extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an axonometric diagram of a new multifunctional flue gas waste heat recovery device for an incineration boiler according to the present utility model.

[0014] Figure 2 This is a cross-sectional view of a multifunctional box of a novel multifunctional flue gas waste heat recovery device for an incineration boiler according to the present utility model.

[0015] Figure 3 This is a schematic diagram of the installation of a new type of multifunctional flue gas waste heat recovery device for an incineration boiler according to the present utility model.

[0016] Figure 4 This is a schematic diagram of the installation of an exhaust nozzle of a new multifunctional flue gas waste heat recovery device for an incineration boiler according to the present invention.

[0017] Figure 5This is a cross-sectional view of a connecting plate of a novel multifunctional flue gas waste heat recovery device for an incineration boiler according to the present utility model.

[0018] Figure 6 This is a cross-sectional view of an air intake pipe of a novel multifunctional flue gas waste heat recovery device for an incineration boiler according to the present utility model.

[0019] Figure 7 This is an installation diagram of a new type of multifunctional driven spur gear for a flue gas waste heat recovery device for an incineration boiler according to the utility model.

[0020] Figure 8 This is a cross-sectional view of an exhaust pipe of a novel multifunctional flue gas waste heat recovery device for an incineration boiler according to the present utility model.

[0021] Numbers in the figure: 1-base frame, 2-support leg, 3-multi-function box, 4-export, 5-handle, 6-threaded rod, 7-U-shaped frame, 8-first connecting rod, 9-baffle, 10-cutting strip, 11-U-shaped seat, 12-thermoelectric power generation board, 13-quick connector, 14-intake pipe, 15-connecting plate, 16-exhaust pipe, 17-one-way valve, 18-exhaust nozzle, 19-impeller, 20-first connecting plate, 21-incomplete internal gear ring, 22-large spur gear, 23-small spur gear, 24-idler gear, 25-driven spur gear, 26-second connecting plate, 27-bearing frame. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0023] like Figure 1-8 As shown, the utility model provides a novel multifunctional flue gas waste heat recovery device for incineration boilers, comprising a base frame 1, a multifunctional box 3 is provided at the upper end of the base frame 1, an aqueous solution is filled in the multifunctional box 3, a thermoelectric power generation plate 12 is provided on the outer end face of the multifunctional box 3, an air intake device is provided at the bottom of the multifunctional box 3, the air intake device comprises an air intake pipe 14, an exhaust nozzle 18 is provided at the upper end of the air intake pipe 14, a rotatable impeller 19 is provided inside the air intake pipe 14, and when the impeller 19 rotates, a structure that the exhaust nozzle 18 can swing back and forth is formed; a plurality of baffles 9 for lengthening the bubble path are also provided on the inner wall of the multifunctional box 3.

[0024] like Figure 1-5As shown, a plurality of supporting legs 2 are fixedly connected to the lower end surface of the base frame 1, and the multifunctional box 3 is fixedly connected to the base frame 1. The base frame 1 and the supporting legs 2 are used to support the entire device. Outlets 4 are also provided on both sides of the upper end surface of the multifunctional box 3, and the outlets 4 are used for exhaust and regular liquid replacement. Through the provided air intake device, it is connected with the exhaust pipe of the incineration boiler, so that the smoke can be ejected from the exhaust nozzle 18. Through the provided impeller 19, since the smoke has a certain flow rate, that is, a certain kinetic energy, when the smoke passes through the air intake pipe 14, it can drive the impeller 19 to rotate, and when the impeller 19 rotates, it drives the exhaust nozzle 18 to swing back and forth. When the exhaust nozzle 18 rotates, the smoke will be evenly sprayed at the bottom of the multifunctional box 3, so that the smoke is evenly distributed. It is discharged at the bottom of the multifunctional box 3, which provides heat conversion efficiency and flue gas purification efficiency. Flue gas usually contains harmful gases such as sulfur dioxide in solution water. When the flue gas passes through the multifunctional box 3, that is, the aqueous solution, the harmful gases can be left in the water, and the aqueous solution has a high heat transfer effect. The residual heat contained in the flue gas will also be left in the aqueous solution. After the aqueous solution is heated, the outer surface of the multifunctional box 3 will also be heated. The thermoelectric power generation plate 12 is set, which can convert heat energy into electrical energy for storage. The thermoelectric power generation plate 12 is electrically connected to the battery. The thermoelectric power generation plate 12 and the battery belong to the existing technology and will not be repeated here. The baffle 9 is set, and the baffle 9 is tilted on the inner wall of the multifunctional box 3. Figure 2 As shown, after the flue gas enters the inner wall of the multifunctional box 3, it will float up under the action of its own buoyancy, and can contact the inclined baffle 9 when floating up. The setting of the baffle 9 can lengthen the path of the flue gas in the multifunctional box 3, thereby lengthening the residence time of the flue gas in the aqueous solution, and further removing the heat and harmful gases in the flue gas; the device can improve the heat conversion efficiency, and reduce the scouring of the flue gas, reduce wear, and extend the service life of the equipment; the multifunctional box 3 is also provided with a liquid outlet at the bottom, and the inner wall of the liquid outlet is threadedly connected with a bolt plug cover, and when the bolt plug cover is removed, the liquid outlet can be opened, so that the aqueous solution can flow out and be replaced regularly.

[0025] An adjusting mechanism is provided on the inner wall of the upper end of the multifunctional box 3. The adjusting mechanism includes a rotatable threaded rod 6. When the threaded rod 6 rotates, a structure is formed in which the baffle 9 swings up and down.

[0026] like Figure 2 As shown, through the provided adjustment mechanism, that is, when the threaded rod 6 rotates, the baffle 9 can be driven to swing up and down, thereby adjusting the inclination angle of the baffle 9. After the inclination angle of the baffle 9 changes, the travel path of the flue gas bubbles can be lengthened or shortened, that is, the residence time of the flue gas in the aqueous solution can be extended or shortened, which can be adjusted according to the residual heat and gas impurities contained in the flue gas.

[0027] The adjusting device also includes a rotatable handle 5, a threaded rod 6 fixedly connected to the lower end surface of the handle 5, and the lower end of the outer surface of the threaded rod 6 is rotatably connected to a U-shaped frame 7 slidingly connected to the multi-function box 3. The lower ends of the U-shaped frame 7 are respectively hinged to the first connecting rod 8, and the inner walls of the left and right ends of the multi-function box 3 are respectively fixed with U-shaped seats 11, and the baffles 9 are respectively hinged on the corresponding U-shaped seats 11, and the other ends of the first connecting rod 8 are respectively hinged on the corresponding baffles 9.

[0028] like Figure 2-3 As shown, the threaded rod 6 is threadedly connected to the inner wall of the upper end of the multi-function box 3. When the threaded rod 6 rotates, the threaded rod 6 can be moved upward or downward through the threaded connection with the multi-function box 3; the U-shaped frame 7 can be slidably connected to the inner wall of the baffle 9 up and down; the baffle 9 is hinged on the U-shaped seat 11 through the provided U-shaped seat 11, so that the baffle 9 can swing up and down; when the driving handle 5 is rotated, it can drive the corresponding threaded rod 6 to rotate, and the rotation of the threaded rod 6 through the threaded connection with the multi-function box 3 will cause the threaded rod 6 and the U-shaped frame 7 to move upward or downward. When the U-shaped frame 7 moves downward, it will drive the corresponding first connecting rod 8 to move downward, and the first connecting rod 8 will drive the baffle 9 to flip downward. When the U-shaped frame 7 moves upward, it will drive the baffle 9 to flip upward, thereby adjusting the inclination of the baffle 9.

[0029] A plurality of staggered cutting strips 10 are fixed to the lower end surface of the baffle 9 .

[0030] like Figure 3 As shown, by setting the cutting strip 10, when the lower end of the smoke bubble baffle 9 moves, the bubbles can be separated by the blocking of the cutting strip 10, so that large bubbles are divided into small bubbles, and the contact area between the smoke and the aqueous solution is increased, thereby improving the heat conversion and purification efficiency. The cutting strips 10 are staggered to increase the bubble cutting area.

[0031] The intake pipe 14 is fixed to the inner wall of the bottom end of the multi-function box 3, the upper end of the impeller 19 is coaxially fixed with an incomplete inner ring gear 21, the upper end of the outer surface of the intake pipe 14 is fixed with a connecting plate 15, the exhaust pipe 16 is rotatably connected to the inner wall of the connecting plate 15, the lower end of the exhaust pipe 16 is coaxially fixed with a driven spur gear 25, the front end of the outer surface of the driven spur gear 25 is meshed with a large spur gear 22 that matches the incomplete inner ring gear 21, the rear end of the outer surface of the driven spur gear 25 is meshed with an idler gear 24, and the rear end of the outer surface of the idler gear 24 is meshed with a small spur gear 23 that matches the incomplete inner ring gear 21.

[0032] like Figure 4-8 As shown, the connecting plate 15 is used to support the exhaust pipe 16 and is connected to the intake pipe 14, that is, the flue gas in the intake pipe 14 can reach the exhaust pipe 16 through the connecting plate 15; the intake pipe 14 passes through the multi-function box 3 and is fixed to the inner wall of the multi-function box 3. The lower end surface of the intake pipe 14 is fixed with a quick connector 13, which is used to connect to the boiler smoke pipe; Figure 6 As shown, the upper end of the impeller 19 is coaxially fixed with a first connecting plate 20, and the inner ring gear is fixed to the upper end surface of the first connecting plate 20. The first connecting plate 20 is used to fixedly connect the incomplete inner ring gear 21, which is equivalent to the impeller 19 being rotatably connected to the incomplete inner ring gear 21; a rotating shaft is fixed at the center of the impeller 19, and a bearing seat is rotatably connected to the outer surface of the rotating shaft. The bearing seat is fixed to the inner wall of the intake pipe 14, so that the impeller 19 and the intake pipe 14 are rotatably connected; as shown Figure 7-8 As shown, the inner wall of the exhaust pipe 16 is fixedly connected to a bearing frame 27, the inner wall of the bearing frame 27 is fixedly connected to a rotating shaft, and the driven spur gear 25 is fixedly connected to the outer surface of the rotating shaft, which is equivalent to the driven spur gear 25 being coaxially fixed to the exhaust pipe 16. The inner wall of the connecting plate 15 is fixedly connected to a second connecting plate 26, and the driven spur gear 25 is rotatably connected to the lower end of the second connecting plate 26 through the rotating shaft. The inner walls of the centers of the large spur gear 22, the idler gear 24, and the small spur gear 23 are respectively fixedly connected to the rotating shaft, and the rotating shafts are respectively rotatably connected to the second connecting plate 26. , the limiting large spur gear 22, idler gear 24, small spur gear 23, and driven spur gear 25 can only rotate; when the impeller 19 rotates, it can drive the corresponding incomplete inner ring gear 21 to rotate. When the incomplete inner ring gear 21 rotates, the large spur gear 22 and the small spur gear 23 cooperate with each other in meshing, which will cause the driven spur gear 25 to reciprocate forward and reverse. When the driven spur gear 25 reciprocates forward and reverse, it will drive the exhaust pipe 16 to reciprocate forward and reverse, and the corresponding exhaust nozzle 18 will swing back and forth, thereby evenly spraying the flue gas.

[0033] An elbow is fixedly connected to the upper end surface of the exhaust pipe 16 , a one-way valve 17 is fixedly connected to the other end of the elbow, and the exhaust nozzle 18 is fixedly connected to the one-way valve 17 .

[0034] like Figure 4 As shown, the one-way valve 17 is used for one-way ventilation to prevent the liquid in the multi-function box 3 from flowing into the exhaust device.

[0035] When the utility model is in use, the air intake device is connected to the exhaust pipe of the incineration boiler, so that the smoke can be ejected from the exhaust nozzle 18. The impeller 19 is provided, and when the smoke passes through the air intake pipe 14, the impeller 19 can be driven to rotate. When the impeller 19 rotates, the exhaust nozzle 18 is driven to swing back and forth. When the exhaust nozzle 18 rotates, the smoke is evenly sprayed at the bottom of the multi-function box 3, so that the smoke is evenly discharged at the bottom of the multi-function box 3, improving heat conversion efficiency and smoke purification efficiency; the thermoelectric power generation plate 12 is provided, and heat energy can be converted into electrical energy for storage; after the smoke enters the inner wall of the multi-function box 3, it floats up under the action of its own buoyancy through the baffle 9, and when floating up, it can contact the inclined baffle 9. The provision of the baffle 9 can lengthen the path of the smoke in the multi-function box 3, thereby lengthening the residence time of the smoke in the aqueous solution, and further removing heat and harmful gases in the smoke; the device can improve heat conversion efficiency, reduce smoke scouring, reduce wear, and extend the service life of the equipment.

[0036] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art may make various modifications, additions, or substitute similar methods to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A novel multifunctional flue gas waste heat recovery device for an incineration boiler, comprising a base frame (1), characterized in that: A multifunctional box (3) is provided at the upper end of the base frame (1), wherein the multifunctional box (3) contains an aqueous solution, a thermoelectric power generation plate (12) is provided on the outer end surface of the multifunctional box (3), and an air intake device is provided at the bottom of the multifunctional box (3), wherein the air intake device comprises an air intake pipe (14), an exhaust nozzle (18) is provided at the upper end of the air intake pipe (14), and a rotatable impeller (19) is provided inside the air intake pipe (14), wherein the impeller (19) rotates to form a structure in which the exhaust nozzle (18) swings back and forth; and a plurality of baffles (9) for lengthening the bubble path are also provided on the inner wall of the multifunctional box (3).

2. The novel multifunctional flue gas waste heat recovery device for an incineration boiler as claimed in claim 1 is characterized in that: An adjustment mechanism is provided on the inner wall of the upper end of the multifunctional box (3), and the adjustment mechanism comprises a rotatable threaded rod (6). When the threaded rod (6) rotates, a structure is formed in which the baffle (9) swings up and down.

3. The novel multifunctional flue gas waste heat recovery device for an incineration boiler as claimed in claim 2 is characterized in that: The adjusting device further comprises a rotatable handle (5), a threaded rod (6) fixedly connected to the lower end surface of the handle (5), the lower end of the outer surface of the threaded rod (6) being rotatably connected to a U-shaped frame (7) slidably connected to the multi-function box (3), the lower end of the U-shaped frame (7) being hinged to a first connecting rod (8), the inner walls of the left and right ends of the multi-function box (3) being fixedly connected to a U-shaped seat (11), the baffles (9) being hinged to the corresponding U-shaped seats (11), and the other end of the first connecting rod (8) being hinged to the corresponding baffles (9).

4. The novel multifunctional flue gas waste heat recovery device for an incineration boiler as claimed in claim 1 is characterized in that: A plurality of staggered cutting strips (10) are fixedly connected to the lower end surface of the baffle (9).

5. The novel multifunctional flue gas waste heat recovery device for an incineration boiler as claimed in claim 1 is characterized in that: The intake pipe (14) is fixed to the inner wall of the bottom end of the multifunctional box (3), the upper end of the impeller (19) is coaxially fixed with an incomplete inner gear ring (21), the upper end of the outer surface of the intake pipe (14) is fixed with a connecting plate (15), the exhaust pipe (16) is rotatably connected to the inner wall of the connecting plate (15), the lower end of the exhaust pipe (16) is coaxially fixed with a driven spur gear (25), the front end of the outer surface of the driven spur gear (25) is meshed with a large spur gear (22) that matches the incomplete inner gear ring (21), the rear end of the outer surface of the driven spur gear (25) is meshed with an idler gear (24), and the rear end of the outer surface of the idler gear (24) is meshed with a small spur gear (23) that matches the incomplete inner gear ring (21).

6. The novel multifunctional flue gas waste heat recovery device for an incineration boiler as claimed in claim 1 is characterized in that: A bend is fixedly connected to the upper end surface of the exhaust pipe (16), a one-way valve (17) is fixedly connected to the other end of the bend, and the exhaust nozzle (18) is fixedly connected to the one-way valve (17).

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