Rotary kiln tail gas cooling device

Abstract

The utility model discloses a rotary kiln tail gas cooling device, including air inlet pipe, exhaust pipe and cooling assembly, wherein, exhaust pipe is located air inlet pipe one side, cooling assembly includes first sealed shell, a plurality of furcation pipe, sealed box, second sealed shell, rotating motor, driving gear, a plurality of tooth slot and blower mechanism, wherein, first sealed shell rotation setting is on air inlet pipe, second sealed shell rotation setting is on exhaust pipe, and one end of a plurality of furcation pipe is circular array installation on first sealed shell. Therefore, through setting a plurality of furcation pipe to tail gas transmission, increase the contact area of tail gas and furcation pipe, increase the heat conduction area of furcation pipe to tail gas, then rotate furcation pipe, and the forced convection produced in rotation can more effectively take away heat, reduce temperature difference gradient, improve the overall cooling rate, and rotation can destroy the temperature boundary layer in water, so that cold water is in contact with the surface of hot pipe continuously, and heat exchange is carried out continuously and efficiently.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling equipment, and in particular to a rotary kiln tail gas cooling device. Background Technology

[0002] Rotary kilns can be classified into cement kilns, metallurgical and chemical kilns, and lime kilns according to the different materials they process. Cement kilns are mainly used for calcining cement clinker and are divided into two main categories: dry process cement kilns and wet process cement kilns.

[0003] Rotary kilns generate a large amount of high-temperature gas during high-temperature calcination. This high-temperature gas contains a large number of impurities and needs to be filtered. Existing rotary kiln exhaust gas is filtered using filter bags, but these filter bags are prone to burn-through in high-temperature environments. Therefore, it is necessary to cool down the exhaust gas from the rotary kiln.

[0004] Traditional exhaust gas cooling methods mainly include direct water cooling and indirect heat exchanger cooling, but these methods have the following shortcomings: In traditional cooling devices, the contact area between exhaust gas and cooling medium (e.g., water) is small, resulting in low heat transfer efficiency. Furthermore, under natural convection conditions, the heat transfer rate is slow, especially in high humidity environments, where a temperature boundary layer is easily formed, hindering further heat exchange. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, the purpose of this utility model is to propose a rotary kiln tail gas cooling device. Through the design of the bifurcated pipe, the contact area between the tail gas and the cooling medium is significantly increased, the heat transfer efficiency is improved, and the rotational motion of the bifurcated pipe generates strong forced convection, which breaks the temperature boundary layer and improves the cooling rate.

[0007] To achieve the above objectives, this utility model proposes an intake pipe, an exhaust pipe, and a cooling assembly, wherein the exhaust pipe is located on one side of the intake pipe; the cooling assembly includes a first sealing shell, multiple branch pipes, a sealing box, a second sealing shell, a rotating motor, a drive gear, multiple toothed grooves, and a blower mechanism, wherein the first sealing shell is rotatably mounted on the intake pipe; the second sealing shell is rotatably mounted on the exhaust pipe; one end of the multiple branch pipes is mounted in a circumferential array on the first sealing shell, and the other end of the multiple branch pipes is connected to the second sealing shell; one end of the sealing box is connected to the first sealing shell, and the other end of the sealing box is connected to the second sealing shell; the rotating motor is mounted on the sealing box; the drive gear is mounted on the output end of the rotating motor; the multiple toothed grooves are formed in a circumferential array on the second sealing shell, and the multiple toothed grooves mesh with the drive gear; the blower mechanism is mounted on the sealing box.

[0008] In addition, the rotary kiln tail gas cooling device proposed in the application may also have the following additional technical features:

[0009] Specifically, the first sealing shell and the second sealing shell are interconnected through a plurality of branched tubes, the middle part of which is arc-shaped.

[0010] Specifically, an inlet pipe and a drain pipe are installed on both sides of the sealed box, and the drain pipe and the inlet pipe are connected to the sealed box.

[0011] Specifically, the blower assembly includes a dispersion box, multiple dispersion holes, a blower, two air guide pipes, and two blower nozzles. The dispersion box is installed inside the sealed box; the multiple dispersion holes are evenly distributed on the dispersion box; the blower is installed at the bottom of the sealed box, and the blowing end of the blower passes through the sealed box and is connected to the dispersion box; one end of each of the two air guide pipes is connected to the sealed box, and the other end of each of the two air guide pipes is connected to the corresponding blower nozzle; the two blower nozzles are respectively fitted onto the air inlet pipe and the air outlet pipe.

[0012] Specifically, a one-way valve is installed on each of the multiple divergence holes.

[0013] The rotary kiln exhaust gas cooling device of this invention transmits exhaust gas through multiple branch pipes, increasing the contact area between the exhaust gas and the branch pipes, and increasing the heat conduction area of ​​the branch pipes to the exhaust gas. Then, the branch pipes are rotated, and the forced convection generated during the rotation can more effectively remove heat, reduce the temperature gradient, and improve the overall cooling rate. In addition, the rotation can break the temperature boundary layer in the water, so that the cold water continuously contacts the surface of the hot pipes, and continuously and efficiently exchange heat.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 This is a schematic diagram of the structure of a rotary kiln tail gas cooling device according to an embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of a sealed box according to an embodiment of the present invention;

[0018] Figure 3This is a partial structural diagram of a sealed box according to an embodiment of the present invention.

[0019] As shown in the figure: 1. Intake pipe; 2. Exhaust pipe; 3. Cooling assembly; 31. First sealing shell; 32. Bifurcation pipe; 33. Sealing box; 34. Second sealing shell; 35. Rotating motor; 36. Drive gear; 37. Gear groove; 38. Blower mechanism; 381. Dispersion box; 382. Dispersion hole; 383. Blower; 384. Air guide pipe; 385. Blower nozzle. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0021] The rotary kiln exhaust gas cooling device of this utility model embodiment will be described below with reference to the accompanying drawings.

[0022] like Figures 1-3 As shown, the rotary kiln exhaust gas cooling device of this utility model embodiment includes an inlet pipe 1, an exhaust pipe 2, and a cooling assembly 3, wherein the exhaust pipe 2 is located on one side of the inlet pipe 1. The cooling assembly 3 includes a first sealing shell 31, multiple branch pipes 32, a sealing box 33, a second sealing shell 34, a rotating motor 35, a drive gear 36, multiple toothed grooves 37, and a blower mechanism 38, wherein the first sealing shell 31 is rotatably mounted on the inlet pipe 1.

[0023] It should be noted that the sealed box 33 is filled with coolant, and the coolant level is flush with the center point of the first sealed shell 31.

[0024] The second sealing shell 34 is rotatably mounted on the exhaust pipe 2. One end of a plurality of branch pipes 32 is mounted in a circumferential array on the first sealing shell 31, and the other end of the plurality of branch pipes 32 is connected to the second sealing shell 34. One end of the sealing box 33 is connected to the first sealing shell 31, and the other end of the sealing box 33 is connected to the second sealing shell 34.

[0025] It should be noted that the bifurcation pipe 32 is made of a material with good thermal conductivity, and staggered rods are installed inside the bifurcation pipe 32, which can increase the flow of exhaust gas inside the bifurcation pipe 32 and increase the contact area between the exhaust gas and the bifurcation pipe 32, thereby increasing the cooling effect on the exhaust gas.

[0026] A rotary motor 35 is mounted on a sealed housing 33. A drive gear 36 is mounted on the output end of the rotary motor 35. Multiple toothed grooves 37 are arranged in a circumferential array on the second sealed housing 34, and the multiple toothed grooves 37 mesh with the drive gear 36. A blower mechanism 38 is disposed on the sealed housing 33.

[0027] Specifically, in actual use, the exhaust gas needs to be cooled to ensure proper subsequent treatment of the exhaust gas.

[0028] When exhaust gas needs to be cooled, the exhaust gas first enters the first sealing shell 31 through the intake pipe 1, and then enters the bifurcation pipe 32 through the first sealing shell 31. At the same time, the output end of the rotating motor 35 drives the drive gear 36 to rotate. Since the drive gear 36 meshes with the tooth groove 37, the rotation of the drive gear 36 will drive the first sealing shell 31 to rotate. The rotation of the first sealing shell 31 will drive the bifurcation pipe 32 to rotate, thereby using the water in the sealing box 33 to cool the bifurcation pipe 32.

[0029] Specifically, such as Figure 2 As shown, the first sealing shell 31 and the second sealing shell 34 are interconnected by multiple branch pipes 32, and the middle part of the multiple branch pipes 32 is arc-shaped.

[0030] It should be noted that the arc-shaped setting in the middle of the bifurcation pipe 32 can increase the length of the bifurcation pipe 32, thereby increasing the contact area between the exhaust gas and the bifurcation pipe 32, and making the cooling effect of the bifurcation pipe 32 on the exhaust gas better.

[0031] Specifically, such as Figure 2 As shown, a water inlet pipe and a water outlet pipe are installed on both sides of the sealed box 33, and the water inlet pipe and the water outlet pipe are connected to the sealed box 33.

[0032] It should be noted that installing inlet and outlet pipes on both sides of the sealed box 33 allows for continuous water replacement, ensuring that the heated water is replaced in a timely manner to cool the branch pipe 32.

[0033] Specifically, such as Figure 1 and Figure 3 As shown, the blower mechanism 38 includes a diffuser box 381, multiple diffuser holes 382, ​​a blower 383, two air ducts 384 and two blower tubes 385, wherein the diffuser box 381 is installed inside the sealed box 33.

[0034] It should be noted that the two blowers 385 have multiple air holes on the side near the corresponding air inlet pipe 1 and exhaust pipe 2, so that the air discharged from the blower 385 can blow air onto the air inlet pipe 1 and exhaust pipe 2.

[0035] Multiple radiating holes 382 are evenly distributed on the radiating box 381. A blower 383 is installed at the bottom of the sealed box 33, with its blowing end penetrating the sealed box 33 and connecting to the radiating box 381. One end of each of the two air guide pipes 384 is connected to the sealed box 33, and the other end of each air guide pipe 384 is connected to its corresponding blower nozzle 385. The two blower nozzles 385 are respectively fitted onto the air inlet pipe 1 and the exhaust pipe 2.

[0036] Specifically, when cooling exhaust gases, it is necessary to increase the flow of water and air to improve the cooling effect.

[0037] When increased water and air flow is required, the blower 383 is operated by controlling the switch. The blower 383 blows air into the diffuser box 381. As the air pressure inside the diffuser box 381 increases, the air inside the diffuser box 381 is discharged from multiple diffuser holes 382. The air discharged from the multiple diffuser holes 382 blows the water in the sealed box 33, thereby increasing the water flow. Finally, the air flows out of the water and comes into contact with the branch pipe 32 inside the sealed box 33, thereby increasing the air flow on the surface of the branch pipe 32. Finally, it enters the blower tube 385 through the air guide tube 384 and is discharged from the inside of the blower tube 385, thereby increasing the air flow on the surface of the air inlet pipe 1 and the exhaust pipe 2.

[0038] Specifically, such as Figure 3 As shown, one-way valves are installed on each of the multiple divergence holes 382.

[0039] It should be noted that the one-way valve restricts the radiator 382 to prevent water in the sealed box 33 from entering the radiator box 381 through the radiator 382.

[0040] In summary, the rotary kiln exhaust gas cooling device of this utility model embodiment transmits exhaust gas through multiple branch pipes 32, increasing the contact area between the exhaust gas and the branch pipes 32, increasing the heat conduction area of ​​the branch pipes 32 on the exhaust gas, and then rotating the branch pipes 32. The forced convection generated during the rotation can more effectively remove heat, reduce the temperature gradient, and improve the overall cooling rate. Moreover, the rotation can break the temperature boundary layer in the water, allowing cold water to continuously contact the surface of the hot pipes, and continuously and efficiently exchange heat.

[0041] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A rotary kiln tail gas cooling device, characterized in that, Includes intake pipe, exhaust pipe, and cooling components, among which, The exhaust pipe is located on one side of the intake pipe; The cooling assembly includes a first sealing shell, multiple branch pipes, a sealing box, a second sealing shell, a rotating motor, a drive gear, multiple toothed grooves, and a blower mechanism, wherein... The first sealing shell is rotatably mounted on the air intake pipe; The second sealing shell is rotatably mounted on the exhaust pipe; One end of each of the multiple branched tubes is mounted in a circumferential array on the first sealing shell, and the other end of each of the multiple branched tubes is connected to the second sealing shell; One end of the sealed box is connected to the first sealed shell, and the other end of the sealed box is connected to the second sealed shell; The rotating motor is mounted on the sealed box; The drive gear is mounted on the output end of the rotating motor; Multiple toothed grooves are arranged in a circumferential array on the second sealing shell, and the multiple toothed grooves mesh with the drive gear; The blower is mounted on the sealed housing.

2. The rotary kiln tail gas cooling device according to claim 1, characterized in that, The first sealing shell and the second sealing shell are interconnected through a plurality of branched tubes, the middle part of which is arc-shaped.

3. The rotary kiln tail gas cooling device according to claim 1, characterized in that, The sealed box is equipped with an inlet pipe and a drain pipe on both sides, and the drain pipe and the inlet pipe are connected to the sealed box.

4. The rotary kiln tail gas cooling device according to claim 1, characterized in that, The blower mechanism includes a diffuser box, multiple diffuser holes, a blower, two air ducts, and two blower nozzles, wherein, The dispersion box is installed inside the sealed box; Multiple diverging holes are evenly distributed on the diverging box; The hair dryer is installed at the bottom of the sealed box, and the blowing end of the hair dryer passes through the sealed box and is connected to the radiating box; One end of each of the two air ducts is connected to the sealed box, and the other end of each of the two air ducts is connected to the corresponding blower. The two blowers are respectively fitted onto the air inlet pipe and the air outlet pipe.

5. The rotary kiln tail gas cooling device according to claim 4, characterized in that, Each of the aforementioned divergence holes is equipped with a one-way valve.

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