Flue gas waste heat recovery system for steel rolling production line

Abstract

The utility model relates to the technical field of flue gas waste heat recovery systems, and discloses a flue gas waste heat recovery system for a steel rolling production line, which comprises a hollow column, the middle lower part of the left side of the hollow column is fixedly connected with an air inlet, and the right end of the air inlet penetrates through the hollow column and is fixedly connected with a filter box; a supporting plate is fixedly connected to the left side of the interior of the filtering box, a filtering net is fixedly connected to the bottom of the supporting plate and the filtering box, an air outlet is formed in the top of the filtering box, an exhaust port is fixedly connected to the upper middle portion of the left side of the hollow column, the right end of the exhaust port penetrates through the hollow column, and a water tank is fixedly connected to the top of the hollow column. And the interior of the hollow column is fixedly connected with a water passing pipe. According to the utility model, the smoke is filtered by the filter screen to reduce the corrosion of harmful substances, and the waste heat of the smoke is absorbed by the water flow to be reused, so that the heat can be stored for a long time, the waste caused by waste heat recovery is reduced, and the requirements of users can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas waste heat recovery systems, and in particular to a flue gas waste heat recovery system for a steel rolling production line. Background Art

[0002] Steel is one of the basic materials of modern industry. Its production and application are of great significance to the development of the national economy. Through steel rolling production, it can promote the industrialization process, promote the development of related industries, and contribute to economic growth and social progress.

[0003] Through steel rolling production, steel billets or steel plates can be processed into steel that meets specific specifications and requirements to meet the needs of different industries and fields. However, in the iron-making process, coke and ore are burned in the blast furnace to produce high-temperature flue gas, so we need a flue gas waste heat recovery system.

[0004] Currently, the existing flue gas waste heat recovery systems on the market mostly recover waste heat through gas. This method cannot preserve heat for a long time and needs to be reused as soon as possible. It will cause waste when recovering waste heat and cannot meet the needs of users. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a flue gas waste heat recovery system for a steel rolling production line, aiming to improve the problems in the prior art that heat cannot be preserved for a long time and needs to be reused as soon as possible, and sometimes waste heat recovery will cause waste and cannot meet the needs of users.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a flue gas waste heat recovery system for a steel rolling production line, comprising a hollow column, an air inlet is fixedly connected to the middle and lower part of the left side of the hollow column, the right end of the air inlet penetrates the hollow column and is fixedly connected to a filter box, a support plate is fixedly connected to the left side of the interior of the filter box, a filter screen is fixedly connected to the bottom of the support plate and the filter box, an air outlet is opened on the top of the filter box, an exhaust port is fixedly connected to the middle and upper part of the left side of the hollow column, the right end of the exhaust port penetrates the hollow column, a water tank is fixedly connected to the top of the hollow column, a water pipe is fixedly connected to the inside of the hollow column, the top of the water pipe penetrates the hollow column and is fixedly connected to the water tank, the bottom end of the water pipe penetrates the middle and lower part of the right side of the hollow column and is connected to a water valve, the right side of the water valve is connected to a thermal insulation water tank, and a cleaning mechanism is provided on the front side of the hollow column.

[0007] As a further description of the above technical solution:

[0008] The cleaning mechanism includes a gear, which is rotatably connected to the front side of the hollow column, a U-shaped clamping plate is fixedly connected to the left side of the front end of the hollow column, a rack is slidably connected to the inside of the U-shaped clamping plate, the rack is meshingly connected to the gear, a cross plate is fixedly connected to the middle and upper part of the right side of the rack, a movable plate is fixedly connected to the rear side of the cross plate, a plurality of hollow tubes are equidistantly fixedly connected to the rear side of the movable plate, a plurality of nozzles are equidistantly fixedly connected to the rear sides of the plurality of hollow tubes, a water pump is fixedly connected to the top of the water tank, a water pipe is fixedly connected to the output end of the water pump, one end of the water pipe passes through the movable plate and is connected to the hollow pipe.

[0009] As a further description of the above technical solution:

[0010] The front and rear sides of the rack are fixedly connected with sliders, the front and rear sides of the interior of the U-shaped clamping plate are provided with sliding grooves, and the plurality of sliders are respectively slidably connected inside the corresponding sliding grooves.

[0011] As a further description of the above technical solution:

[0012] A water outlet is provided at the middle and lower part of the front side of the hollow column, and a drainage board is slidably connected to the water outlet.

[0013] As a further description of the above technical solution:

[0014] A drainage board is slidably connected to the middle and lower part of the front side of the hollow column, and a handle is fixedly connected to the front side of the drainage board.

[0015] As a further description of the above technical solution:

[0016] The right end of the exhaust port is slidably connected with a movable door.

[0017] As a further description of the above technical solution:

[0018] An air pressure monitor is fixedly connected to the front side of the hollow column.

[0019] As a further description of the above technical solution:

[0020] The front side of the thermal insulation water storage tank is fixedly connected with a temperature display.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the filter screen is used to filter the flue gas to reduce the corrosion of harmful substances, and the waste heat of the flue gas is absorbed by the water flow for reuse. This method can preserve heat for a long time, reduce the waste caused by waste heat recovery, and can meet the needs of users.

[0023] 2. In the utility model, the gear is rotated to drive the rack to move, so that the movable plate moves up and down, and the water is pumped by the water pump to let the nozzle spray out to clean the water pipe, which can effectively increase the service life of the equipment and reduce the number of maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of a flue gas waste heat recovery system for a steel rolling production line proposed by the utility model;

[0025] Figure 2 This is a partial structural cross-sectional view of a flue gas waste heat recovery system for a steel rolling production line proposed by the utility model;

[0026] Figure 3 This is a partial structural elevation view of a flue gas waste heat recovery system for a steel rolling production line proposed by the utility model.

[0027] Legend:

[0028] 1. Hollow column; 2. Cleaning mechanism; 201. Gear; 202. U-shaped splint; 203. Rack; 204. Horizontal plate; 205. Moving plate; 206. Hollow tube; 207. Nozzle; 208. Water pump; 209. Water pipe; 3. Air inlet; 4. Filter box; 5. Support plate; 6. Filter screen; 7. Air outlet; 8. Exhaust port; 9. Sink; 10. Water valve; 11. Water pipe; 12. Insulated water tank; 13. Air pressure monitor; 14. Temperature display; 15. Drain board; 16. Handle; 17. Moving door; 18. Slider; 19. Slide; 20. Water outlet. 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 described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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] Reference Figure 1 and Figure 2The utility model provides an embodiment: a flue gas waste heat recovery system for a steel rolling production line, comprising a hollow column 1, an air inlet 3 is fixedly connected to the middle and lower part of the left side of the hollow column 1, the right end of the air inlet 3 penetrates the hollow column 1 and is fixedly connected to a filter box 4, a support plate 5 is fixedly connected to the left side of the filter box 4, a filter screen 6 is fixedly connected to the bottom of the support plate 5 and the filter box 4, an air outlet 7 is opened on the top of the filter box 4, an exhaust port 8 is fixedly connected to the middle and upper part of the left side of the hollow column 1, the right end of the exhaust port 8 penetrates the hollow column 1, and the top of the hollow column 1 is fixedly connected A water tank 9 is connected, a water pipe 11 is fixedly connected to the inside of the hollow column 1, the top of the water pipe 11 passes through the hollow column 1 and is fixedly connected to the water tank 9, the bottom of the water pipe 11 passes through the middle and lower part of the right side of the hollow column 1 and is connected to a water valve 10, the right side of the water valve 10 is connected to a heat preservation water storage tank 12, a cleaning mechanism 2 is arranged on the front side of the hollow column 1, the right end of the exhaust port 8 passes through the hollow column 1, the right end of the exhaust port 8 is slidably connected to a movable door 17, an air pressure monitor 13 is fixedly connected to the front side of the hollow column 1, and a temperature display 14 is fixedly connected to the front side of the heat preservation water storage tank 12;

[0031] Specifically, the smoke enters the filter box 4 and is filtered through the filter mesh 6 to reduce the corrosion of harmful substances to the water pipe 11. Water enters the water pipe 11 from the water tank 9. The heat of the smoke heats the water. At the same time, the water valve 10 is opened to allow water to flow into the thermal insulation water tank 12. At this time, the movable door 17 is opened to allow the smoke to be discharged from the air outlet 7. This method can preserve heat for a long time, reduce waste during waste heat recovery, and meet user needs. The air pressure monitor 13 can conveniently monitor the air pressure inside the hollow column 1, and the temperature display 14 can observe the water temperature inside the thermal insulation water tank 12.

[0032] Reference Figure 1 and Figure 3 The cleaning mechanism 2 includes a gear 201, which is rotatably connected to the front side of the hollow column 1, a U-shaped clamping plate 202 is fixedly connected to the left side of the front end of the hollow column 1, a rack 203 is slidably connected inside the U-shaped clamping plate 202, the rack 203 is meshed with the gear 201, a transverse plate 204 is fixedly connected to the middle and upper part of the right side of the rack 203, a movable plate 205 is fixedly connected to the rear side of the transverse plate 204, a plurality of hollow tubes 206 are equidistantly fixedly connected to the rear side of the movable plate 205, a plurality of nozzles 207 are equidistantly fixedly connected to the rear side of the plurality of hollow tubes 206, a water pump 208 is fixedly connected to the top of the water tank 9, a water delivery pipe 209 is fixedly connected to the output end of the water pump 208, one end of the water delivery pipe 209 passes through the movable plate 205 and is connected to the hollow tube 206;

[0033] Specifically, the cleaning mechanism 2 can clean the inside of the hollow column 1, rotate the gear 201 to drive the rack 203 to move, so that the movable plate 205 moves up and down, and the water pump 208 sprays the water nozzle 207 to clean the water pipe 11, which can effectively increase the service life of the equipment and reduce the number of maintenance and replacement.

[0034] Reference Figure 3 The front and rear sides of the rack 203 are fixedly connected with sliders 18, and the front and rear sides of the U-shaped clamping plate 202 are provided with slide grooves 19, and the multiple sliders 18 are slidably connected in the corresponding slide grooves 19;

[0035] Specifically, the slider 18 and the slide slot 19 allow the rack 203 to move up and down in the U-shaped clamping plate 202 .

[0036] Reference Figure 1 A water outlet 20 is provided at the middle and lower part of the front side of the hollow column 1, and a drain board 15 is slidably connected to the water outlet 20. A drain board 15 is slidably connected to the middle and lower part of the front side of the hollow column 1, and a handle 16 is fixedly connected to the front side of the drain board 15;

[0037] Specifically, the water outlet 20 and the drain plate 15 can conveniently drain the water in the hollow column 1 after cleaning, and the handle 16 allows the staff to pull the drain plate 15 conveniently.

[0038] Working principle: When using the flue gas waste heat recovery system of the steel rolling production line, the smoke exhaust port must be aligned with the air inlet 3 first. At this time, the smoke enters the filter box 4 and passes through the filter screen 6 to filter the smoke, reducing the corrosion of harmful substances to the water pipe 11. At this time, water enters the water pipe 11 from the water tank 9, so that the heat of the smoke heats the water. At the same time, the water valve 10 is opened to allow water to flow into the thermal insulation water tank 12. At this time, the movable door 17 can be opened to allow the smoke to be discharged from the air outlet 7. This method can preserve heat for a long time, reduce waste during waste heat recovery, and meet the needs of users. When it is necessary to clean the water pipe 11, the gear 201 can be rotated to drive the rack 203 to move downward. At this time, the movable plate 205 moves downward through the cross plate 204, and at the same time, the water pump 208 is turned on to allow the water to flow through the water pipe 209 into the hollow tube 206. At this time, water is sprayed from the nozzle 207 to clean the water pipe 11, which can effectively increase the service life of the equipment and reduce the number of maintenance and replacement.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can 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 should be included in the protection scope of the present invention.

Claims

1. A flue gas waste heat recovery system for a steel rolling production line, comprising a hollow column (1), characterized in that: An air inlet (3) is fixedly connected to the middle and lower part of the left side of the hollow column (1); the right end of the air inlet (3) penetrates the hollow column (1) and is fixedly connected to a filter box (4); a support plate (5) is fixedly connected to the left side of the interior of the filter box (4); a filter screen (6) is fixedly connected to the bottom of the support plate (5) and the filter box (4); an air outlet (7) is provided on the top of the filter box (4); an exhaust port (8) is fixedly connected to the middle and upper part of the left side of the hollow column (1); the right end of the exhaust port (8) is fixedly connected to the left side of the hollow column (1); The end of the hollow column (1) passes through the hollow column (1), the top of the hollow column (1) is fixedly connected to a water tank (9), the interior of the hollow column (1) is fixedly connected to a water pipe (11), the top of the water pipe (11) passes through the hollow column (1) and is fixedly connected to the water tank (9), the bottom of the water pipe (11) passes through the middle and lower part of the right side of the hollow column (1) and is connected to a water valve (10), the right side of the water valve (10) is connected to a heat-insulating water storage tank (12), and a cleaning mechanism (2) is arranged on the front side of the hollow column (1).

2. The flue gas waste heat recovery system for a steel rolling production line according to claim 1, characterized in that: The cleaning mechanism (2) comprises a gear (201), the gear (201) being rotatably connected to the front side of the hollow column (1), a U-shaped clamping plate (202) being fixedly connected to the left side of the front end of the hollow column (1), a rack (203) being slidably connected inside the U-shaped clamping plate (202), the rack (203) being meshingly connected to the gear (201), a transverse plate (204) being fixedly connected to the middle and upper part of the right side of the rack (203), and a rear side of the transverse plate (204) being fixedly connected to the rear side of the rack (204). A movable plate (205) is fixedly connected to the rear side of the movable plate (205) with multiple hollow tubes (206) fixedly connected at equal intervals, and multiple nozzles (207) are fixedly connected to the rear sides of the multiple hollow tubes (206) with equal intervals, and a water pump (208) is fixedly connected to the top of the water tank (9), and a water delivery pipe (209) is fixedly connected to the output end of the water pump (208), and one end of the water delivery pipe (209) passes through the movable plate (205) and is connected to the hollow tubes (206).

3. The flue gas waste heat recovery system for a steel rolling production line according to claim 2, characterized in that: The front and rear sides of the rack (203) are fixedly connected with sliders (18), the front and rear sides of the interior of the U-shaped clamping plate (202) are provided with sliding grooves (19), and the plurality of sliders (18) are slidably connected inside the corresponding sliding grooves (19).

4. The flue gas waste heat recovery system for a steel rolling production line according to claim 1, characterized in that: A water outlet (20) is provided at the middle and lower part of the front side of the hollow column (1), and the water outlet (20) is slidably connected to a drainage plate (15).

5. The flue gas waste heat recovery system for a steel rolling production line according to claim 4, characterized in that: A drainage board (15) is slidably connected to the middle and lower part of the front side of the hollow column (1), and a handle (16) is fixedly connected to the front side of the drainage board (15).

6. The flue gas waste heat recovery system for a steel rolling production line according to claim 1, characterized in that: The right end of the exhaust port (8) is slidably connected to a movable door (17).

7. The flue gas waste heat recovery system for a steel rolling production line according to claim 1, characterized in that: An air pressure monitor (13) is fixedly connected to the front side of the hollow column (1).

8. The flue gas waste heat recovery system for a steel rolling production line according to claim 1, characterized in that: A temperature display (14) is fixedly connected to the front side of the heat-insulating water storage tank (12).

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