Dust suppression type flue gas waste heat recovery device

Abstract

The utility model discloses a dust suppression type flue gas waste heat recovery device, which belongs to the technical field of waste heat recovery devices and comprises a gathering cover and a coil pipe, the outer surface of the coil pipe is connected with heat absorption fins, the lower surface of the gathering cover is connected with an air inlet pipe, and the upper surface of the gathering cover is connected with a first exhaust pipe. The outer surface of the air inlet pipe is connected with a heat preservation cover, the heat preservation cover is located outside the gathering cover, the interior of the heat preservation cover is hollow, a cavity in the heat preservation cover is filled with heat preservation cotton, and one side of the heat preservation cover is connected with a second exhaust pipe. The heat absorption area of the coil pipe is increased through the heat absorption fins, blocking is formed outside the gathering cover through the heat preservation cover, blocked flue gas is recycled in the gathering cover again, waste heat in the flue gas is absorbed again, heat transfer to the outside is reduced through isolation formed by the heat preservation cotton, loss of the flue gas waste heat is reduced, and the utilization rate of the flue gas waste heat is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery devices, in particular to a dust suppression type flue gas waste heat recovery device. Background Art

[0002] The dust suppression flue gas waste heat recovery device is a device that can recover and reuse the waste heat of flue gas emitted during the industrial production process. Its working principle is to efficiently absorb and store the heat in the emitted flue gas through special materials and structural design, and then convert this heat into usable thermal energy for industrial production or other purposes. By recovering the waste heat in the flue gas, the flue gas emission temperature can be reduced, environmental pollution can be reduced, and at the same time, the energy cost of the enterprise can be reduced and the economic benefits can be improved.

[0003] Most of the existing dust suppression type flue gas waste heat recovery devices collect the flue gas inside through a collection box, and install a large number of coils inside the collection box. Water is passed through the coils and circulated to absorb the heat inside the flue gas. Although this structure can recycle the preheated inside the flue gas for reuse, the thermal insulation effect of the collection hood is poor, and part of the heat of the flue gas will be lost, resulting in a decrease in the utilization rate of the waste heat inside the flue gas. In order to solve this technical problem, the utility model proposes a dust suppression type flue gas waste heat recovery device. Utility Model Content

[0004] The main purpose of the utility model is to provide a dust suppression type flue gas waste heat recovery device, which can effectively solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A dust suppression type flue gas waste heat recovery device includes a gathering hood and a coil, the coil is installed inside the gathering hood, the outer surface of the coil is connected to heat-absorbing fins, the lower surface of the gathering hood is connected to an air intake pipe, the upper surface of the gathering hood is connected to a first exhaust pipe, the outer surface of the air intake pipe is connected to a heat-insulating hood, and the heat-insulating hood is located outside the gathering hood, the interior of the heat-insulating hood is hollow, the cavity inside the heat-insulating hood is filled with heat-insulating cotton, and one side of the heat-insulating hood is connected to the second exhaust pipe.

[0007] Preferably, the number of the first exhaust pipes is four, and the four first exhaust pipes are arranged in an equilateral quadrilateral.

[0008] Preferably, one end of the coil is connected to a water inlet pipe, and the other end of the coil is connected to a water outlet pipe.

[0009] Preferably, there are multiple heat-absorbing fins, and the multiple heat-absorbing fins are arranged at equal distances.

[0010] Preferably, one end of the second exhaust pipe away from the heat insulation cover is connected to a smoke control box, and the inner wall of the smoke control box is rotatably connected to a smoke control valve plate.

[0011] Preferably, both ends of the smoke control valve plate are provided with retaining grooves, and the inner wall of the smoke control box is connected to two retaining blocks, which are symmetrical and matched with the retaining grooves.

[0012] Preferably, one side of the smoke control box is connected to a support plate, one side of the support plate is installed with a hydraulic cylinder, the output end of the hydraulic cylinder is connected to a push rod, the end of the smoke control valve plate located outside the smoke control box is connected to a swing arm, a slide groove is provided on the inner side of the swing arm, and the push rod is slidably connected to the inner wall of the slide groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the utility model, the heat-insulating cover, the heat-absorbing fins and the heat-insulating cotton are coordinated to increase the heat-absorbing area of ​​the coil by the heat-absorbing fins, and the heat-insulating cover forms a barrier outside the gathering cover, so that the blocked flue gas is recycled again inside, and the residual heat inside the flue gas is absorbed again. The heat-insulating cotton forms isolation to reduce the heat transfer to the outside, thereby reducing the loss of residual heat of the flue gas and improving the utilization rate of the residual heat of the flue gas.

[0015] The utility model cooperates with the smoke control valve plate, the swing arm and the hydraulic cylinder, uses the hydraulic cylinder as a power source to provide power for the push rod to move the position, and drives the swing arm to rotate through the push rod. After the swing arm rotates, the smoke control valve plate is driven to adjust the angle. The size of the outlet of the smoke control box is adjusted by the rotation angle of the smoke control valve plate, thereby adjusting the emission of smoke. When the amount of smoke is small, the outlet of the smoke control box is reduced to reduce the outward discharge. When the amount of smoke is large, the outlet of the smoke control box is increased to increase the exhaust volume, which can better regulate the use of smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a dust suppression type flue gas waste heat recovery device of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a heat preservation cover in a dust suppression type flue gas waste heat recovery device of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of a gathering hood in a dust suppression type flue gas waste heat recovery device of the present utility model;

[0019] Figure 4 This is a schematic diagram of the overall structure of a smoke control box in a dust suppression type flue gas waste heat recovery device of the utility model;

[0020] Figure 5This is a schematic diagram of the internal structure of a smoke control box in a dust suppression type flue gas waste heat recovery device of the present invention.

[0021] In the figure: 1. Aggregation hood; 2. Coil; 3. Air inlet pipe; 4. First exhaust pipe; 5. Insulation hood; 6. Insulation cotton; 7. Second exhaust pipe; 8. Water inlet pipe; 9. Water outlet pipe; 10. Heat-absorbing fins; 11. Smoke control box; 12. Smoke control valve plate; 13. Stop groove; 14. Block; 15. Support plate; 16. Hydraulic cylinder; 17. Push rod; 18. Swing arm; 19. Slide. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1-5 As shown, a dust suppression type flue gas waste heat recovery device includes a gathering hood 1 and a coil 2. The coil 2 is installed inside the gathering hood 1. The outer surface of the coil 2 is connected with heat-absorbing fins 10. There are multiple heat-absorbing fins 10, and the multiple heat-absorbing fins 10 are arranged at equal distances. The heat absorption area of ​​the coil 2 is increased by the heat dissipation fins, the heat absorption effect of the coil 2 is improved, the waste heat utilization efficiency is improved, and the exhaust temperature of the flue gas is reduced.

[0024] The lower surface of the gathering hood 1 is connected to an air intake pipe 3, through which the flue gas is transported into the interior of the gathering hood 1. The upper surface of the gathering hood 1 is connected to a first exhaust pipe 4. There are four first exhaust pipes 4, and the four first exhaust pipes 4 are arranged in an equilateral quadrilateral. The flue gas inside the gathering hood 1 is discharged into the interior of the heat preservation hood 5 through the first exhaust pipe 4. The flue gas discharged into the interior of the heat preservation hood 5 heats the gathering hood 1 again outside the gathering hood 1.

[0025] The outer surface of the intake pipe 3 is connected to a thermal insulation cover 5, and the thermal insulation cover 5 is located outside the gathering cover 1. The interior of the thermal insulation cover 5 is hollow, and the cavity inside the thermal insulation cover 5 is filled with thermal insulation cotton 6. One side of the thermal insulation cover 5 is connected to a second exhaust pipe 7. The thermal insulation cotton 6 is made of glass fiber. Glass fiber has good thermal insulation and high temperature resistance. The insulation formed by the thermal insulation cotton 6 reduces the heat transfer to the outside and improves the thermal insulation effect.

[0026] One end of the coil 2 is connected to a water inlet pipe 8 , and the other end of the coil 2 is connected to a water outlet pipe 9 . The water source is replenished into the coil 2 through the water inlet pipe 8 , and the heated water inside the coil 2 is discharged through the water outlet pipe 9 .

[0027] The end of the second exhaust pipe 7 away from the heat preservation cover 5 is connected to the smoke control box 11, and the inner wall of the smoke control box 11 is rotatably connected to the smoke control valve plate 12. The opening size of the smoke control box 11 is adjusted by rotating the opening angle of the smoke control valve plate 12 to control the amount of smoke exhaust. A retaining groove 13 is provided at both ends of the smoke control valve plate 12. Two blocks 14 are connected to the inner wall of the smoke control box 11, and the two blocks 14 are symmetrical. The blocks 14 are adapted to the retaining groove 13. The contact between the retaining groove 13 and the block 14 maintains the stability of the smoke control valve plate 12 and improves the sealing of the smoke control valve plate 12. A support plate 15 is connected to one side of the smoke control box 11. A hydraulic cylinder 16 is installed on one side of the support plate 15, and the output end of the hydraulic cylinder 16 is connected to a push rod 17. The end of the smoke control valve plate 12 located outside the smoke control box 11 is connected to a swing arm 18. A slide groove 19 is provided on the inner side of the swing arm 18. The push rod 17 is slidably connected to the inner wall of the slide groove 19 through the hydraulic cylinder 16 as the power source, providing power for the rotation of the smoke control valve plate 12. The hydraulic cylinder 16 can also be replaced by other power sources. When the hydraulic cylinder 16 pushes the swing arm 18 to rotate through the push rod 17, an angle difference will be generated between the swing arm 18 and the push rod 17, and the angle difference between the push rod 17 and the swing arm 18 will be compensated by the slide groove 19.

[0028] It should be noted that in actual use of the device, first the flue gas enters the interior of the gathering hood 1 through the air inlet pipe 3, and then the flue gas contacts the coil 2 and the heat-absorbing fins 10. The coil 2 and the heat-absorbing fins 10 absorb the heat inside the flue gas at the same time, and the flue gas also heats the gathering hood 1. Then the flue gas flows upward, and the flowing flue gas is discharged into the heat-insulating hood 5 through the first exhaust pipe 4. The flue gas entering the heat-insulating hood 5 heats the gathering hood 1 again inside, and the flue gas is utilized again. After being heated, the gathering hood 1 transmits the heat radiation to the coil 2 again, and then the remaining flue gas is discharged through the second exhaust pipe 7. When the amount of flue gas is small or large, the hydraulic cylinder 16 pushes the push rod 17 to move its position, and the push rod 17 pushes the swing arm 18 to rotate. The swing arm 18 drives the smoke control valve plate 12 to rotate at the same time. The outlet size of the smoke control box 11 is adjusted by the rotation angle of the smoke control valve plate 12, thereby adjusting the emission of flue gas.

[0029] 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 dust suppression type flue gas waste heat recovery device, comprising a gathering hood (1) and a coil (2), characterized in that: The coil (2) is installed inside the gathering hood (1), the outer surface of the coil (2) is connected to a heat-absorbing fin (10), the lower surface of the gathering hood (1) is connected to an air intake pipe (3), the upper surface of the gathering hood (1) is connected to a first exhaust pipe (4), the outer surface of the air intake pipe (3) is connected to a heat-insulating hood (5), and the heat-insulating hood (5) is located outside the gathering hood (1), the interior of the heat-insulating hood (5) is hollow, the cavity inside the heat-insulating hood (5) is filled with heat-insulating cotton (6), and one side of the heat-insulating hood (5) is connected to a second exhaust pipe (7).

2. The dust suppression type flue gas waste heat recovery device according to claim 1, characterized in that: The number of the first exhaust pipes (4) is four, and the four first exhaust pipes (4) are arranged in an equilateral quadrilateral.

3. The dust suppression type flue gas waste heat recovery device according to claim 1, characterized in that: One end of the coil (2) is connected to a water inlet pipe (8), and the other end of the coil (2) is connected to a water outlet pipe (9).

4. The dust suppression type flue gas waste heat recovery device according to claim 1, characterized in that: The number of the heat-absorbing fins (10) is multiple, and the multiple heat-absorbing fins (10) are arranged at equal distances.

5. The dust suppression type flue gas waste heat recovery device according to claim 1, characterized in that: One end of the second exhaust pipe (7) away from the heat-insulating cover (5) is connected to a smoke control box (11), and the inner wall of the smoke control box (11) is rotatably connected to a smoke control valve plate (12).

6. The dust suppression type flue gas waste heat recovery device according to claim 5, characterized in that: Both ends of the smoke control valve plate (12) are provided with retaining grooves (13); the inner wall of the smoke control box (11) is connected with two retaining blocks (14), and the two retaining blocks (14) are symmetrical to each other, and the retaining blocks (14) are adapted to the retaining grooves (13).

7. The dust suppression type flue gas waste heat recovery device according to claim 6, characterized in that: One side of the smoke control box (11) is connected to a support plate (15), one side of the support plate (15) is installed with a hydraulic cylinder (16), the output end of the hydraulic cylinder (16) is connected to a push rod (17), one end of the smoke control valve plate (12) located outside the smoke control box (11) is connected to a swing arm (18), the inner side of the swing arm (18) is provided with a slide groove (19), and the push rod (17) is slidably connected to the inner wall of the slide groove (19).

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