Cooler for denitration of tail gas of kiln
By introducing a stirring rod and helical gear structure into the kiln flue gas cooling device, the exhaust gas drives the water body to rotate between the upper partition and the lower partition, the problem of low cooling efficiency and uniformity is solved, and more efficient smoke is achieved Air cooled.
Patent Information
- Application Number
- CN202421156161.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-25
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-25
AI Technical Summary
The existing kiln flue gas cooling device cannot effectively control the temperature of the flue gas, resulting in low cooling efficiency and poor uniformity, especially in the problem of low water flow in the intermediate cavity.
A cooler including upper partition, lower partition, spiral tube, stirring rod, rotating shaft and helical gear is designed. The exhaust fan drives the fan blade to rotate, and the stirring rod is rotated, so that the water body is placed on the upper partition and the lower partition. Rotating between partitions increases the contact area and flowability of the water body with the spiral tube, improves cooling efficiency, and further optimizes the agitation range and cooling effect through the cooperation of the slider and the limiting block.
It improves cooling efficiency, solves the problems of cooling uniformity and low efficiency, uses air blowing power, and does not require additional energy consumption, which enhances the cooling effect of the spiral tube.
Smart Images
Figure CN222297974U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flue gas cooling equipment, in particular to a cooler for denitrification of tail gas from a kiln. Background Art
[0002] At present, the stock of high-temperature shuttle kilns is relatively low, and the standards for flue gas emissions vary from province to province. Although there are many methods of desulfurization and denitrification, the requirements of the denitrification system for flue gas at different time periods are relatively complex. When treating the flue gas, it is first necessary to control the flue gas temperature. The existing flue gas cooling device cannot control the amount of flue gas in and out, resulting in the temperature not meeting the standard during flue gas treatment, so a cooling device is needed.
[0003] Publication No. CN216346359U discloses a cooler for denitrification of kiln flue gas, which includes a shell, an upper baffle fixed above the inside of the shell, and a lower baffle fixed below the inside of the shell. The inside of the shell is divided from top to bottom into a top cavity, a middle cavity and a bottom cavity by the upper baffle and the lower baffle; a plurality of spiral flue gas pipes are fixed in the middle cavity; an air inlet pipe is fixed at the top of the inner wall of the shell near the top cavity. However, the patent still has the following problems in actual use:
[0004] Cold water is pumped into the middle cavity by the coordinated use of the water inlet pipe and the water pump. During the flow, the cold water exchanges heat and cools down the flue gas in the spiral flue pipe through the contact with the pipe wall. The spiral pipe design can increase the distance of flue gas flow and increase the heat exchange time. However, since the water body mainly flows from the water inlet end to the water outlet end, the water body in the middle cavity has good fluidity only at the bottom and right side, and the fluidity at other positions is not high, so that the spiral water pipes at other internal positions have poor cooling uniformity and low cooling efficiency, which has certain defects.
[0005] A cooler for denitrification of tail gas from a kiln is proposed to solve the above-mentioned problems. Utility Model Content
[0006] The utility model aims to provide a cooler for tail gas denitration of a kiln, so as to solve the problem that the fluidity of water in the middle cavity is not high at some positions, so that the spiral water pipes at other positions inside have poor cooling uniformity and low cooling efficiency.
[0007] To achieve the above object, the utility model provides the following technical solution: a cooler for tail gas denitration of a kiln, comprising a cooling box and a base fixedly connected to the bottom of the cooling box, a water inlet pipe is installed in the middle of one side of the cooling box, and a drain pipe is installed in the middle of the other side of the cooling box;
[0008] An exhaust pipe is connected to the lower part of one side of the cooling box, an air intake pipe is connected to the upper part of the other side of the cooling box, and an exhaust fan is installed in the middle of the air intake pipe;
[0009] Also includes:
[0010] An upper partition is fixedly connected to the upper part of the cooling box, a through hole is opened inside the upper partition, a lower partition is fixedly connected to the lower part of the cooling box, a through hole is opened inside the lower partition, a mounting column is fixedly connected between the upper partition and the lower partition, a spiral tube is wound around the outer side of the mounting column, and a stirring rod is installed inside the cooling box;
[0011] The middle of the inner top of the cooling box is fixedly connected with an installation box, one side of the installation box is rotatably connected with a rotating shaft 1, one end of the rotating shaft 1 is connected with a fan blade, the other side of the rotating shaft 1 is fixedly connected with a main bevel gear, the bottom of the installation box is rotatably connected with a rotating shaft 2, the top of the rotating shaft 2 is fixedly connected with a slave bevel gear, and the slave bevel gear is meshed with the main bevel gear;
[0012] Wherein, the second rotating shaft is fixedly connected to the stirring rod, and the stirring rod is located between the upper partition plate and the lower partition plate.
[0013] Preferably, the top end of the spiral tube is connected to the through hole of the upper partition, the bottom end of the spiral tube is connected to the through hole of the lower partition, and one end of the air intake pipe passes through the cooling box and is located above the upper partition.
[0014] Preferably, the number of the mounting posts is no less than six, the stirring rods are symmetrically arranged, the fan blades are located on a side of the mounting box close to the air inlet pipe, and the fan blades are fixedly connected to a rotating shaft.
[0015] Preferably, a support sleeve is sleeved on the outer side of the rotating shaft 1, and the support sleeve is fixedly connected to the cooling box.
[0016] Preferably, a slide groove is provided inside the stirring rod, a slide rod is slidably connected inside the slide groove, a spring is fixedly connected to one side inside the slide groove, and one end of the spring is fixedly connected to the slide rod.
[0017] Preferably, a limiting groove is provided on one side of the interior of the stirring rod, and limiting blocks are symmetrically fixed on both sides of the sliding rod, and the limiting blocks are slidably connected to the limiting groove.
[0018] Preferably, the limiting groove is communicated with the sliding groove, and two limiting grooves are symmetrically provided.
[0019] Compared with the prior art, the utility model has the following beneficial effects: by arranging the upper baffle, the lower baffle, the spiral tube, the stirring rod, the rotating shaft 1, the fan blades, the main bevel gear, the rotating shaft 2 and the slave bevel gear, the fan blades are pushed to rotate slowly when the exhaust gas is input, so that the rotating shaft 2 can rotate, and the rotating shaft 2 drives the stirring rod to rotate, and the stirring rod rotates the water body between the upper baffle and the lower baffle, so that the water body is discharged after rotating inside, which is convenient for the water body to flow and contact with the overall spiral tube, and the cooling efficiency is improved. The specific contents are as follows:
[0020] By arranging an upper baffle, a lower baffle, a spiral tube, a stirring rod, a rotating shaft 1, a fan blade, a main bevel gear, a rotating shaft 2 and a slave bevel gear, when the exhaust fan inputs the exhaust gas inside the intake pipe into the interior of the cooling box, the exhaust gas enters the spiral tube through the through hole on the upper baffle, inputs cooling water through the water inlet pipe, and is circulated and discharged through the drain pipe, so that the circulating water inside the upper baffle and the lower baffle cools the spiral tube, and the cooled exhaust gas is discharged to the next process through the through hole on the lower baffle and the exhaust pipe, thereby completing the cooling operation. At the same time, when the exhaust gas is input, it will push the fan blade to rotate slowly, and the fan blade drives the rotating shaft 1 and the main bevel gear to rotate. The gears rotate, the main bevel gear drives the slave bevel gear and the second rotating shaft to rotate, the second rotating shaft drives the stirring rod to rotate, and the stirring rod rotates against the water between the upper baffle and the lower baffle, so that the water is discharged after rotating inside, which is convenient for the water to flow and contact with the overall spiral tube, reducing the problems of low cooling efficiency and low cooling uniformity of the spiral tube in some positions, improving the cooling efficiency, and utilizing the power of blowing, without additional energy consumption, solving the problem that the water in the middle cavity has low fluidity in some positions, resulting in poor cooling uniformity and low cooling efficiency of the spiral water tubes in other positions inside.
[0021] A stirring rod, a sliding rod, a spring, a limit groove and a limit block are provided. When the rotating shaft 2 rotates, the rotating shaft 2 drives the stirring rod to rotate. The centrifugal force of the stirring rod causes the sliding rod to be thrown outward a certain distance. At this time, the spring is stretched. A sealing block is installed at the connection between the sliding rod and the stirring rod to reduce the entry of water. When the sliding rod slides, the sliding rod drives the limit block to move. The limit block slides inside the limit groove, thereby limiting the sliding rod. The extended sliding rod increases the range of stirring and further improves the cooling efficiency of the spiral tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model in front section;
[0023] Figure 2 This is a schematic diagram of the installation structure of the stirring rod of the utility model;
[0024] Figure 3 For this utility model Figure 1 A is an enlarged structural diagram;
[0025] Figure 4For this utility model Figure 2 The enlarged structural diagram at B in FIG.
[0026] Figure 5 This is a schematic diagram of the overall structure of the utility model in a top view;
[0027] Figure 6 This is a schematic diagram of the overall structure of the utility model.
[0028] In the figure: 1. cooling box; 2. base; 3. upper partition; 4. lower partition; 5. water inlet pipe; 6. drain pipe; 7. exhaust pipe; 8. air inlet pipe; 9. exhaust fan; 10. mounting column; 11. spiral tube; 12. stirring rod; 13. mounting box; 14. rotating shaft 1; 15. fan blade; 16. supporting sleeve; 17. main bevel gear; 18. rotating shaft 2; 19. slave bevel gear; 20. slide groove; 21. slide rod; 22. spring; 23. limit groove; 24. limit block. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] See also Figure 1-6 The utility model provides a technical solution: a cooler for denitrification of tail gas from a kiln, comprising a cooling box 1 and a base 2 fixedly connected to the bottom of the cooling box 1, a water inlet pipe 5 is installed in the middle of one side of the cooling box 1, and a drain pipe 6 is installed in the middle of the other side of the cooling box 1.
[0031] An exhaust pipe 7 is connected to the lower part of one side of the cooling box 1, and an air intake pipe 8 is connected to the upper part of the other side of the cooling box 1. An exhaust fan 9 is installed in the middle of the air intake pipe 8. The model of the exhaust fan 9 can be RAETTS70.
[0032] An upper partition 3 is fixedly connected to the upper part of the cooling box 1, and a through hole is opened inside the upper partition 3. A lower partition 4 is fixedly connected to the lower part of the cooling box 1, and a through hole is opened inside the lower partition 4. A mounting column 10 is fixedly connected between the upper partition 3 and the lower partition 4, and a spiral tube 11 is wound around the outer side of the mounting column 10. A stirring rod 12 is installed inside the cooling box 1.
[0033] The top end of the spiral tube 11 is connected to the through hole of the upper partition 3 , the bottom end of the spiral tube 11 is connected to the through hole of the lower partition 4 , and one end of the air intake pipe 8 passes through the cooling box 1 and is located above the upper partition 3 .
[0034] Among them, an installation box 13 is fixedly connected to the middle of the inner top of the cooling box 1, one side of the installation box 13 is rotatably connected to a rotating shaft 14, one end of the rotating shaft 14 is connected to a fan blade 15, and the other side of the rotating shaft 14 is fixedly connected to a main bevel gear 17, the bottom of the installation box 13 is rotatably connected to a rotating shaft 2 18, and the top of the rotating shaft 2 18 is fixedly connected to a slave bevel gear 19, which is meshingly connected to the main bevel gear 17.
[0035] When the exhaust fan 9 inputs the exhaust gas inside the intake pipe 8 into the interior of the cooling box 1, the exhaust gas enters the spiral tube 11 through the through hole on the upper partition 3, inputs cooling water through the water inlet pipe 5, and is circulated and discharged through the drain pipe 6, so that the circulating water inside the upper partition 3 and the lower partition 4 cools the spiral tube 11, and the cooled exhaust gas is discharged to the next process through the through hole on the lower partition 4 and the exhaust pipe 7, thereby completing the cooling operation.
[0036] When the exhaust gas is input, the fan blades 15 are pushed to rotate slowly, and the fan blades 15 drive the rotating shaft 14 and the main bevel gear 17 to rotate, and the main bevel gear 17 drives the slave bevel gear 19 and the rotating shaft 2 18 to rotate, and the rotating shaft 2 18 drives the stirring rod 12 to rotate, and the stirring rod 12 rotates the water body between the upper partition 3 and the lower partition 4, so that the water body is discharged after the internal rotation, which is convenient for the water body to flow and contact with the overall spiral tube 11, reducing the low cooling efficiency of the spiral tube 11 in some positions and the low cooling uniformity, improving the cooling efficiency, and utilizing the power of blowing, without additional energy consumption, solving the problem that the water body in the middle cavity has low fluidity in some positions, which makes the spiral water pipes in other positions inside have poor cooling uniformity and low cooling efficiency.
[0037] There are no less than six mounting columns 10, the stirring rods 12 are symmetrically arranged, the fan blades 15 are located on the side of the mounting box 13 close to the air inlet pipe 8, the fan blades 15 are fixedly connected to the rotating shaft 14, the outer side of the rotating shaft 14 is sleeved with a support sleeve 16, and the support sleeve 16 is fixedly connected to the cooling box 1.
[0038] The second rotating shaft 18 is fixedly connected to the stirring rod 12 , and the stirring rod 12 is located between the upper partition plate 3 and the lower partition plate 4 .
[0039] A slide groove 20 is provided inside the stirring rod 12 , and a slide rod 21 is slidably connected inside the slide groove 20 . A spring 22 is fixedly connected to one side of the slide groove 20 , and one end of the spring 22 is fixedly connected to the slide rod 21 .
[0040] A limiting groove 23 is provided on one side of the inner part of the stirring rod 12, and limiting blocks 24 are symmetrically fixed on both sides of the slide rod 21. The limiting blocks 24 are slidably connected to the limiting groove 23, and the limiting groove 23 is connected to the slide groove 20. There are two symmetrical limiting grooves 23.
[0041] When the rotating shaft 18 rotates, the rotating shaft 18 drives the stirring rod 12 to rotate, and the centrifugal force of the stirring rod 12 causes the sliding rod 21 to be thrown outward for a certain distance. At this time, the spring 22 is stretched, and a sealing block is installed at the connection between the sliding rod 21 and the stirring rod 12 to reduce the entry of water. When the sliding rod 21 slides, the sliding rod 21 drives the limit block 24 to move, and the limit block 24 slides inside the limit groove 23, thereby limiting the sliding rod 21. The extended sliding rod 21 increases the range of stirring and further improves the cooling efficiency of the spiral tube 11.
[0042] Working principle:
[0043] Before using this type of furnace exhaust denitrification cooler, it is necessary to check the overall condition of the device to ensure that it can work normally. Figure 1 - Figure 6 As shown, when the exhaust fan 9 inputs the exhaust gas inside the intake pipe 8 into the interior of the cooling box 1, the exhaust gas enters the spiral tube 11 through the through hole on the upper partition 3, inputs cooling water through the water inlet pipe 5, and is circulated and discharged through the drain pipe 6, so that the circulating water inside the upper partition 3 and the lower partition 4 cools the spiral tube 11, and the cooled exhaust gas is discharged to the next process through the through hole on the lower partition 4 and the exhaust pipe 7, thereby completing the cooling operation.
[0044] At the same time, when the exhaust gas is input, the fan blades 15 are pushed to rotate slowly, and the fan blades 15 drive the rotating shaft 14 and the main bevel gear 17 to rotate, and the main bevel gear 17 drives the slave bevel gear 19 and the rotating shaft 2 18 to rotate, and the rotating shaft 2 18 drives the stirring rod 12 to rotate.
[0045] When the rotating shaft 18 rotates, the rotating shaft 18 drives the stirring rod 12 to rotate, and the centrifugal force of the stirring rod 12 causes the slide bar 21 to be thrown outward for a certain distance. At this time, the spring 22 is stretched, and a sealing block is installed at the connection between the slide bar 21 and the stirring rod 12 to reduce the entry of water. When the slide bar 21 slides, the slide bar 21 drives the limit block 24 to move, and the limit block 24 slides inside the limit groove 23, thereby limiting the slide bar 21. The extended slide bar 21 increases the stirring range and further improves the cooling efficiency of the spiral tube 11. The stirring rod 12 rotates the water between the upper partition 3 and the lower partition 4, so that the water is discharged after rotating inside, which is convenient for the water to flow in contact with the overall spiral tube 11.
[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A cooler for denitrification of tail gas from a kiln, comprising a cooling box (1) and a base (2) fixedly connected to the bottom of the cooling box (1), a water inlet pipe (5) being installed in the middle of one side of the cooling box (1), and a drainage pipe (6) being installed in the middle of the other side of the cooling box (1); An exhaust pipe (7) is connected to the lower part of one side of the cooling box (1), an air intake pipe (8) is connected to the upper part of the other side of the cooling box (1), and an exhaust fan (9) is installed in the middle of the air intake pipe (8); It is characterized in that Also includes: An upper partition (3) is fixedly connected to the upper part of the cooling box (1), a through hole is provided inside the upper partition (3), a lower partition (4) is fixedly connected to the lower part of the cooling box (1), a through hole is provided inside the lower partition (4), a mounting column (10) is fixedly connected between the upper partition (3) and the lower partition (4), a spiral tube (11) is wound around the outer side of the mounting column (10), and a stirring rod (12) is installed inside the cooling box (1); The middle of the inner top of the cooling box (1) is fixedly connected to an installation box (13); one side of the installation box (13) is rotatably connected to a rotating shaft (14); one end of the rotating shaft (14) is connected to a fan blade (15); the other side of the rotating shaft (14) is fixedly connected to a main bevel gear (17); the bottom of the installation box (13) is rotatably connected to a rotating shaft (18); the top of the rotating shaft (18) is fixedly connected to a slave bevel gear (19); the slave bevel gear (19) is meshingly connected to the main bevel gear (17); The second rotating shaft (18) is fixedly connected to the stirring rod (12), and the stirring rod (12) is located between the upper partition (3) and the lower partition (4).
2. The cooler for denitrification of tail gas from a kiln according to claim 1, characterized in that: The top end of the spiral tube (11) is connected to the through hole of the upper partition (3), the bottom end of the spiral tube (11) is connected to the through hole of the lower partition (4), and one end of the air intake pipe (8) passes through the cooling box (1) and is located above the upper partition (3).
3. The cooler for denitrification of tail gas from a kiln according to claim 1, characterized in that: The number of the mounting columns (10) is no less than six, the stirring rods (12) are symmetrically arranged, the fan blades (15) are located on a side of the mounting box (13) close to the air inlet pipe (8), and the fan blades (15) are fixedly connected to the first rotating shaft (14).
4. The cooler for denitrification of tail gas from a kiln according to claim 1, characterized in that: A support sleeve (16) is sleeved on the outer side of the rotating shaft 1 (14), and the support sleeve (16) is fixedly connected to the cooling box (1).
5. The cooler for denitrification of tail gas from a kiln according to claim 1, characterized in that: A slide groove (20) is provided inside the stirring rod (12), a slide rod (21) is slidably connected inside the slide groove (20), a spring (22) is fixedly connected to one side of the slide groove (20), and one end of the spring (22) is fixedly connected to the slide rod (21).
6. The cooler for denitrification of tail gas from a kiln according to claim 5, characterized in that: A limiting groove (23) is provided on one side of the interior of the stirring rod (12), and limiting blocks (24) are symmetrically fixed on both sides of the sliding rod (21), and the limiting blocks (24) are slidably connected to the limiting groove (23).
7. The cooler for denitrification of tail gas from a kiln according to claim 6, characterized in that: The limiting groove (23) is connected to the slide groove (20), and two limiting grooves (23) are symmetrically provided.