Double-layer combined flue gas distribution volute core

Abstract

The utility model discloses a double-layer combined flue gas distribution volute core, which belongs to the technical field of flue gas distributors and comprises a gas inlet pipe and a double-layer flue gas treatment component mounted in the gas inlet pipe. When the device is used, the replacement assembly arranged on the flow guide plate can drive a first bevel gear and a second bevel gear to be in meshing transmission by rotating a grip in an equipment running state by utilizing a mounting disc, a fixed frame and a magnetic attraction structure, so that quick replacement of a medium block is realized, the tedious operation of stopping, reducing pressure and supplementing a medium is avoided, and the working efficiency is improved. Meanwhile, the fan blades on the inner wall of the mounting frame and the conical mixing cover act synergistically, so that a flue gas flow field is optimized, direct scouring of high-speed airflow to a medium block is reduced, the service life of a medium is prolonged, and the consumption speed is reduced; the equipment does not need to be frequently started and stopped, the mechanical wear of the pipeline and the volute core part is greatly reduced, the maintenance cost of the equipment is effectively reduced, and the efficient, stable and economical operation of the flue gas pretreatment process is realized.

Description

Technical Field

[0001] This utility model relates to the field of flue gas distributor technology, specifically to a double-layer combined flue gas distribution volute. Background Technology

[0002] In the process of solid waste incineration, the reaction tower is one of the key pieces of equipment. A double-layer combined flue gas distribution structure is often used. By diverting the flue gas into the inner and outer channels to form a spiral airflow, the gas entering the tower can fully contact and mix with the sprayed desulfurizing agent, denitrification catalyst and other media to complete the gas-liquid / gas-solid two-phase pretreatment process, effectively improving the uniformity of gas distribution and reaction efficiency in the tower.

[0003] However, this technology has some problems in practical applications: the media used for pretreatment (such as limestone slurry and activated carbon powder) are consumed at a rate far exceeding expectations due to the high-speed airflow and violent gas-solid / gas-liquid reaction at the inlet end; and when the media supply is insufficient, a shutdown and depressurization operation is required before the maintenance port can be opened to replenish the media. This operation method not only significantly reduces the continuous operating time of the equipment and the overall processing efficiency, but also the frequent start-ups and shutdowns of the equipment will aggravate the mechanical wear of the pipelines and spiral core components, resulting in a significant increase in equipment maintenance costs.

[0004] Based on this, the present invention designs a double-layer combined flue gas distribution vortex to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a double-layer combined flue gas distribution volute.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A double-layer combined flue gas distribution volute includes an air inlet pipe and a double-layer flue gas treatment assembly installed inside the air inlet pipe. The double-layer flue gas treatment assembly includes a symmetrically arranged mounting frame and a guide plate. A mixing hood is fixedly installed on the opposite sides of the mounting frame and the guide plate. A treatment pipe is connected between the two mixing hoods. The surface of the guide plate has circumferentially distributed guide ports. A medium block is provided on the inner wall of the guide port. A replacement component is provided on the guide plate.

[0008] Furthermore, a bearing frame is fixedly connected to the inner wall of the mounting frame, and a connecting shaft is rotatably connected to the center of the bearing frame via a bearing. Fan blades are fixedly connected to the outer surface of the connecting shaft.

[0009] Furthermore, both of the mixing hoods are tapered, with one end larger than the other, and both have their smaller ends fixedly connected to the processing tube.

[0010] Furthermore, the connecting shaft is a cylinder with one end larger than the other, the fan blades are distributed on both ends of the connecting shaft, and the smaller end of the connecting shaft extends to the center of the opening of the mixing hood.

[0011] Furthermore, the guide plate has an internal mounting groove, and a mounting plate is provided at the center of the mounting groove. A symmetrical rotating shaft is fixedly connected to the side wall of the mounting plate. The rotating shaft is rotatably connected to the center of the mounting groove through a bearing. The replacement component includes a fixing frame distributed circumferentially on the outer surface of the mounting plate. There are a total of six fixing frames. Three guide ports are provided and are circumferentially distributed coaxially and equidistantly with the fixing frames.

[0012] Furthermore, the replacement assembly also includes a support shaft fixed to the end face of either of the rotating shafts.

[0013] The support shaft is fixedly connected to a first bevel gear at one end away from the rotation shaft. A second bevel gear is meshed with the outer surface of the first bevel gear. A connecting rod extending from the other end of the intake pipe is fixedly connected to the outer surface of the second bevel gear, and the connecting rod is connected to the intake pipe at the contact point through a bearing.

[0014] Furthermore, a handle is fixedly connected to one end of the connecting rod outside the air intake pipe, and a thread is formed on the surface of the end of the connecting rod outside the air intake pipe, with a fastening sleeve threaded onto the surface of the thread.

[0015] Furthermore, the medium block and the fixing frame are both fan-shaped, the mounting groove is circular, and the arc-shaped outer wall of the fixing frame fits into the inner wall of the mounting groove. The inner wall of the flow guide and the outer wall of the fixing frame are both made of magnetic material.

[0016] Compared with the prior art, the advantages of this utility model are as follows: When the device is in use, the replacement component set on the guide plate, using the mounting plate, fixing frame and magnetic structure, can quickly replace the medium block by rotating the handle to drive the first bevel gear and the second bevel gear to mesh and transmit power while the equipment is running. This avoids the cumbersome operation of stopping the machine to reduce pressure and replenish the medium, and improves the continuous running time and overall processing efficiency of the equipment. At the same time, the fan blades on the inner wall of the mounting frame and the conical mixing hood work together to optimize the flue gas flow field, reduce the direct scouring of the medium block by the high-speed airflow, extend the service life of the medium and reduce the consumption rate; and eliminates the need for frequent start and stop of the equipment, which greatly reduces the mechanical wear of the pipeline and the spiral core components, effectively reduces the equipment maintenance cost, and achieves efficient, stable and economical operation of the flue gas pretreatment process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional view of the whole;

[0019] Figure 2 This is a partial sectional 3D view of the intake manifold;

[0020] Figure 3 This is a three-dimensional view of the flow guide port on the surface of the flow guide plate;

[0021] Figure 4 This is a three-dimensional structural view of the mounting frame;

[0022] Figure 5 A perspective view of the guide vane assembled with the first and second bevel gears;

[0023] Figure 6 This is a partial cross-sectional perspective view of the deflector.

[0024] The labels in the diagram represent:

[0025] 1. Intake pipe; 2. Mounting frame; 3. Deflector plate; 4. Processing pipe; 5. Mixing hood; 6. Inlet; 7. Medium block; 8. Mounting slot; 9. Mounting plate; 10. Fixing frame; 11. Rotating shaft; 12.

[0026] 13. Support shaft; 14. First bevel gear; 15. Second bevel gear; 16. Connecting rod; 17. Handle; 18. Thread; 19. Fastening sleeve; 20. Bearing bracket; 21. Connecting shaft; 22. Fan blade. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] In some embodiments, please refer to the accompanying drawings. Figures 1-6A dual-layer combined flue gas distribution volute includes an intake pipe 1 and a dual-layer flue gas treatment assembly installed inside the intake pipe 1. The dual-layer flue gas treatment assembly includes a symmetrically arranged mounting frame 2 and a guide plate 3. The mounting frame 2 and the guide plate 3...

[0029] A mixing hood 5 is fixedly installed on each of the two opposite sides. A processing pipe 4 is connected between the two mixing hoods 5. A circumferentially distributed guide port 6 is opened on the surface of the guide plate 3. A medium block 7 is provided on the inner wall of the guide port 6. A replacement component is provided on the guide plate 3.

[0030] In some embodiments, such as Figures 2-4 As shown, in a preferred embodiment of the double-layer combined flue gas distribution volute of this utility model, a bearing frame 20 is fixedly connected to the inner wall of the mounting frame 2, and a connecting shaft 21 is rotatably connected to the center of the bearing frame 20 through a bearing. A fan blade 22 is fixedly connected to the outer surface of the connecting shaft 21. With this structure, the flue gas entering the intake pipe 1 can drive the fan blade 22 to rotate, thereby mixing with the flue gas entering the treatment pipe 4.

[0031] In some embodiments, such as Figures 2-4 As shown, in a preferred embodiment of the double-layer combined flue gas distribution spiral core of this utility model, both mixing hoods 5 are conical with one end larger than the other, and both small ends are fixedly connected to the processing pipe 4. The two mixing hoods 5 form a gradually narrowing and expanding flow channel to change the flue gas velocity. Combined with the stirring of the fan blades 22, the flue gas composition is more evenly distributed. The stable internal air pressure and conical inner wall facilitate the replacement of the medium block 7, prevent the accumulation of old medium, and ensure the efficient operation of the equipment. The connecting shaft 21 is a cylinder with one end larger than the other, and the fan blades 22 are distributed on both ends of the connecting shaft 21. The small end of the connecting shaft 21 extends to the center of the opening of the mixing hood 5. The connecting shaft 21 adopts a... The cylindrical design, with one end larger than the other, and fan blades 22 distributed on both ends, with the smaller end extending to the center of the opening of the mixing hood 5, serves two purposes. First, the fan blades 22, distributed at both ends of the connecting shaft 21, can fully utilize the impact of flue gas flow at different positions within the intake pipe 1, increasing the rotational driving force and driving the connecting shaft 21 to rotate efficiently. This enhances the mixing effect of the flue gas within the treatment pipe 4 and the mixing hood 5. Second, the smaller end of the connecting shaft 21 extending to the center of the opening of the mixing hood 5 can specifically agitate the high-speed converging flue gas within the conical structure, preventing the flue gas from forming eddies or uneven flow rates at this point. Combined with the gradually contracting and expanding characteristics of the mixing hood 5, this further improves the turbulence and mixing uniformity of the flue gas.

[0032] In some embodiments, such as Figures 2-6As shown, in a preferred embodiment of the double-layer combined flue gas distribution spiral core of this utility model, the guide plate 3 has an installation groove 8 inside, and an installation plate 9 is provided at the center of the installation groove 8. A symmetrical rotating shaft 11 is fixedly connected to the side wall of the installation plate 9. The rotating shaft 11 is rotatably connected to the center of the installation groove 8 through a bearing. The replacement component includes a fixing frame 10 circumferentially distributed on the outer surface of the installation plate 9. There are six fixing frames 10 in total. Three guide ports 6 are provided and are circumferentially distributed coaxially and equidistantly with the fixing frames 10. When the medium block 7 used in the guide port 6 needs to be replaced, the installation plate 9 can be rotated to allow the medium hidden in the installation groove 8 to be replaced. The medium block 7 enters the interior of the guide port 6, and the replaced medium block 7 can then be stored inside the mounting slot 8. The replacement assembly also includes a support shaft 12 fixed to the end face of any rotating shaft 11. A first bevel gear 13 is fixedly connected to the end of the support shaft 12 away from the rotating shaft 11. A second bevel gear 14 is meshed with the outer surface of the first bevel gear 13. A connecting rod 15, with its other end extending out of the air intake pipe 1, is fixedly connected to the outer surface of the second bevel gear 14. The contact point between the connecting rod 15 and the air intake pipe 1 is connected by a bearing. The bearing limits the position of the connecting rod 15 and the air intake pipe 1, thus ensuring that the connecting rod 15 has a certain degree of usability. For stability, when the connecting rod 15 rotates, the first bevel gear 13 and the second bevel gear 14 mesh and drive, thereby rotating the mounting plate 9 and the fixing frame 10 to replace the medium block 7. A handle 17 is fixedly connected to one end of the connecting rod 15 outside the air intake pipe 1, and a thread 18 is formed on the surface of this end. A fastening sleeve 19 is threaded onto the surface of the thread 18. Rotating the handle 17 outside the air intake pipe 1 facilitates operation of the connecting rod 15. After operation, the fastening sleeve 19 can be tightened onto the surface of the thread 18, resulting in a tight fit between the fastening sleeve 19 and the outside of the air intake pipe 1. Yes, the medium block 7 and the fixing frame 10 are both fan-shaped, the mounting groove 8 is circular, and the arc-shaped outer wall of the fixing frame 10 fits into the inner wall of the mounting groove 8. The inner wall of the guide port 6 and the outer wall of the fixing frame 10 are both made of magnetic material. This structure allows the fixing frame 10 to fit into the inner wall of the mounting groove 8 when it is in the storage state. At the same time, setting the medium block 7 and the fixing frame 10 to be fan-shaped can maximize the space for flue gas to pass through on the surface of the guide plate 3. In addition, the inner wall of the guide port 6 and the outer wall of the fixing frame 10 are both made of magnetic material, which can provide adsorption attraction in the replacement state, making it convenient to quickly replace the new medium block 7 in the guide port 6.

[0033] When the medium block 7 is saturated with adsorption or reaction and needs to be replaced, the operator rotates the handle 17 outside the air inlet pipe 1, which drives the connecting rod 15 to rotate. The rotation of the connecting rod 15 transmits power to the support shaft 12 through the meshing of the second bevel gear 14 and the first bevel gear 13, thereby driving the mounting plate 9 to rotate in the mounting groove 8. The six fixed frames 10 distributed circumferentially on the mounting plate 9 rotate accordingly. When the spare medium block 7 hidden in the mounting groove 8 rotates to the coaxial position with the guide port 6, the spare medium block 7 is quickly attracted into the guide port 6 due to the magnetic attraction between the inner wall of the guide port 6 and the outer wall of the fixed frame 10, thus completing the replacement. After the replacement is completed, the operator tightens the fastening sleeve 19 along the thread 18 to make it fit tightly against the outside of the air inlet pipe 1, ensuring that the connecting rod 15 is fixed and preventing the medium block 7 from shifting during operation. The old medium block 7 that is replaced rotates into the mounting groove 8 with the fixed frame 10 and is hidden. It will be cleaned up after the equipment is stopped.

[0034] When the device is in normal operation, the flue gas enters through the inlet pipe 1 and first impacts the fan blades 22 on the inner wall of the mounting frame 2, causing the connecting shaft 21 to rotate on the bearing bracket 20. The rotating fan blades 22 perform initial stirring of the flue gas, making the flue gas distribution more uniform. Subsequently, the flue gas enters the mixing hood 5, which is larger at one end and smaller at the other. Under the action of the conical structure, the flow is accelerated and enters the treatment pipe 4 from the smaller opening of the mixing hood 5. After further mixing in the treatment pipe 4, the flue gas enters another mixing hood 5. At this time, the flue gas decelerates due to the expansion of the flow channel cross-sectional area, forming turbulence and enhancing the mixing effect. The smaller end of the connecting shaft 21 extends to the center of the opening of the mixing hood 5, and the fan blades 22 on its surface perform secondary stirring of the high-speed converging flue gas to ensure that the flue gas is fully mixed. The mixed flue gas is discharged through the guide port 6 on the guide plate 3 and comes into full contact with the medium block 7 to carry out adsorption or chemical reaction, thereby achieving flue gas pretreatment.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A double-layer combined flue gas distribution volute, comprising an inlet pipe (1) and a double-layer flue gas treatment assembly installed inside the inlet pipe (1), characterized in that: The double-layer flue gas treatment assembly includes a symmetrically arranged mounting frame (2) and a guide plate (3). A mixing hood (5) is fixedly installed on the opposite sides of the mounting frame (2) and the guide plate (3). A treatment pipe (4) is connected between the two mixing hoods (5). A circumferentially distributed guide port (6) is opened on the surface of the guide plate (3). A medium block (7) is provided on the inner wall of the guide port (6). A replacement component is provided on the guide plate (3).

2. The double-layer combined flue gas distribution spiral core according to claim 1, characterized in that, The inner wall of the mounting frame (2) is fixedly connected to a bearing frame (20), and a connecting shaft (21) is rotatably connected to the center of the bearing frame (20) through a bearing. A fan blade (22) is fixedly connected to the outer surface of the connecting shaft (21).

3. The double-layer combined flue gas distribution spiral core according to claim 1, characterized in that, Both of the mixing hoods (5) are cone-shaped with one end larger than the other, and both of the smaller ends are fixedly connected to the processing tube (4).

4. The double-layer combined flue gas distribution spiral core according to claim 2, characterized in that, The connecting shaft (21) is a cylinder with one end larger than the other. The fan blades (22) are distributed on both ends of the connecting shaft (21), and the small end of the connecting shaft (21) extends to the center of the opening of the mixing cover (5).

5. The double-layer combined flue gas distribution spiral core according to claim 1, characterized in that, The guide plate (3) has an installation groove (8) inside. An installation plate (9) is provided at the center of the installation groove (8). A symmetrical rotating shaft (11) is fixedly connected to the side wall of the installation plate (9). The rotating shaft (11) is rotatably connected to the center of the installation groove (8) through a bearing. The replacement component includes a fixing frame (10) circumferentially distributed on the outer surface of the installation plate (9). There are six fixing frames (10) in total. Three guide ports (6) are provided and are circumferentially distributed coaxially and equidistantly with the fixing frames (10).

6. The double-layer combined flue gas distribution spiral core according to claim 5, characterized in that, The replacement assembly also includes a support shaft (12) fixed to the end face of any of the rotating shafts (11). A first bevel gear (13) is fixedly connected to one end of the support shaft (12) away from the rotating shaft (11). A second bevel gear (14) is meshed with the outer surface of the first bevel gear (13). A connecting rod (15) with the other end extending out of the air intake pipe (1) is fixedly connected to the outer surface of the second bevel gear (14). The connecting rod (15) is connected to the air intake pipe (1) at the contact point through a bearing.

7. The double-layer combined flue gas distribution spiral core according to claim 6, characterized in that, The connecting rod (15) is fixedly connected to a handle (17) at one end outside the air intake pipe (1), and the surface of the connecting rod (15) outside the air intake pipe (1) is provided with a thread (18), and a fastening sleeve (19) is threadedly connected to the surface of the thread (18).

8. The double-layer combined flue gas distribution spiral core according to claim 5, characterized in that, The medium block (7) and the fixing frame (10) are both fan-shaped, the mounting groove (8) is circular, and the arc-shaped outer wall of the fixing frame (10) fits into the inner wall of the mounting groove (8). The inner wall of the guide port (6) and the outer wall of the fixing frame (10) are both made of magnetic material.

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