A smoke recycling apparatus

Abstract

The application discloses a flue gas recycling device and belongs to the field of environmental protection, which comprises a combustion chamber, a conveying pipe one is fixedly connected to the top of the combustion chamber, a venturi pipe is fixedly connected to the side, away from the combustion chamber, of the conveying pipe one, an adjusting mechanism is arranged in the venturi pipe, a mixing mechanism is arranged on one side of the adjusting mechanism, the mixing mechanism comprises a motor, the motor is fixedly connected with the venturi pipe, air is conveyed to the inside of the venturi pipe through a conveying pipe three and an air pump, then the output end of the motor drives the rotating rod to rotate, then the rotating rod drives the driving gear to rotate, then the driving gear meshes with the driven gear to drive the stirring rod to rotate, flue gas and air are mixed, the traditional flue gas recycling device is avoided, when flue gas and air are mixed, flue gas and air are prone to uneven mixing, which leads to unstable combustion, and the practicability is improved.

Description

Technical Field

[0001] This application relates to the field of environmental protection technology, and in particular to a flue gas recovery and utilization device. Background Technology

[0002] Flue gas produced during industrial combustion contains large amounts of nitrogen oxides (NOx), which are extremely harmful to the environment and human health. To reduce NOx emissions, the industry widely adopts technologies such as selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR).

[0003] Currently, traditional flue gas recovery and utilization equipment mainly uses external return pipes to reintroduce some flue gas into the combustion chamber for combustion, reducing nitrogen oxides in the flue gas. However, when mixing flue gas with air, uneven mixing can easily occur, leading to unstable combustion. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a flue gas recovery and utilization device, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: a flue gas recovery and utilization device, comprising a combustion chamber, a conveying pipe 1 fixedly connected to the top of the combustion chamber, a venturi tube fixedly connected to the side of the conveying pipe 1 away from the combustion chamber, an adjustment mechanism provided inside the venturi tube, a mixing mechanism provided on one side of the adjustment mechanism, the mixing mechanism including a motor, the motor fixedly connected to the venturi tube, a rotating rod fixedly connected to the output end of the motor, the rotating rod rotatably connected to the venturi tube, a driving gear fixedly connected to one side of the rotating rod, a driven gear meshing on one side of the driving gear, a stirring rod fixedly connected to one side of the driven gear, the stirring rod rotatably connected to the venturi tube, a conveying pipe 3 fixedly connected to the top of the venturi tube, an induced draft fan fixedly connected to the side of the venturi tube away from the conveying pipe 1, a conveying pipe 2 fixedly connected to one side of the induced draft fan, and a filtering mechanism provided on the surface of the conveying pipe 2.

[0006] In a preferred embodiment, the adjusting mechanism includes a movable block that is slidably connected to a venturi tube. A threaded rod is rotatably connected to the surface of the movable block and is threadedly connected to the venturi tube. A handle is fixedly connected to the side of the threaded rod away from the movable block.

[0007] By adopting the above technical solution, the screw rod is rotated by turning the handle, and then the screw rod rotates to push the moving block to move. The moving block then adjusts the width of the venturi throat diameter to adapt to different flue gas and air flow ratios. This allows for better adjustment of the venturi throat diameter to adapt to different flue gas and air flow ratios.

[0008] In a preferred embodiment, the filtration mechanism includes a filter box, which is fixedly connected to the conveying pipe. A limiting block is fixedly connected inside the filter box, and a limiting frame is provided on one side of the limiting block. The limiting frame is slidably connected to the filter box, and a filter screen is fixedly connected inside the limiting frame. An inspection door is provided on the surface of the filter box.

[0009] By adopting the above technical solution, the flue gas is transported to the inside of the filter box through the second conveying pipe. The limiting block inside the filter box limits the limiting frame, the limiting frame fixes the filter screen, and the filter screen filters the impurities in the flue gas, which can better filter the impurities in the flue gas.

[0010] In a preferred embodiment, a plurality of nozzles are fixedly connected inside the combustion chamber, and the nozzles are evenly distributed inside the combustion chamber. The nozzles are fixedly connected to the delivery pipe.

[0011] By adopting the above technical solution, the mixture of flue gas and air is transported to the nozzle through the delivery pipe, and then the mixture is sprayed out by the nozzle for combustion, thereby reducing nitrogen oxides in the air and thus reducing nitrogen oxides in the air more effectively.

[0012] In a preferred embodiment, a controller is fixedly connected to the surface of the combustion chamber, a flow sensor is fixedly connected between the induced draft fan and the venturi tube, a flow sensor is fixedly connected between the venturi tube and the delivery pipe, and both the flow sensor and the flow sensor are electrically connected to the controller.

[0013] By adopting the above technical solution, the flow rate of flue gas is detected by flow sensor one, the flow rate of air is detected by flow sensor two, and the working state of flow sensor two and flow sensor one is controlled by the controller, which can better control the working state of flow sensor two and flow sensor one.

[0014] In a preferred embodiment, the venturi tube is fixedly connected to two rows of baffles, which are staggered inside the venturi tube.

[0015] By adopting the above technical solution, two rows of baffles are fixedly connected inside the venturi tube, and the baffles cause the gas to turbulent, thereby enhancing the mixing degree of flue gas and air.

[0016] In a preferred embodiment, an oxygen content sensor is fixedly connected inside the venturi tube, and the oxygen content sensor, the induced draft fan, and the controller are all electrically connected.

[0017] By adopting the above technical solution, an oxygen content sensor is fixedly connected inside the venturi tube, and the wind speed of the induced draft fan is controlled by the controller, which can better control the wind speed of the induced draft fan.

[0018] The beneficial effects of this application are: 1. This flue gas recovery and utilization equipment, by setting up a motor, a rotating rod, a driving gear, a driven gear, and a stirring rod, delivers air to the inside of a venturi tube through an external air pump connected to a delivery pipe. The output end of the motor rotates, driving the rotating rod to rotate, which in turn drives the driving gear to rotate. The driving gear and the driven gear mesh to rotate the stirring rod, mixing the flue gas and air. This avoids the problem of uneven mixing of flue gas and air, which is common in traditional flue gas recovery and utilization equipment, leading to unstable combustion. This improves practicality.

[0019] 2. This flue gas recovery and utilization equipment, by setting up a filter box, a limiting block, a limiting frame, and a filter screen, transports flue gas to the inside of the filter box through a second conveying pipe. The limiting block inside the filter box then limits the limiting frame, which in turn fixes the filter screen. The filter screen then filters impurities in the flue gas. Finally, the maintenance door of the filter box is opened to clean the impurities inside. This avoids the problem of traditional flue gas recovery and utilization equipment being unable to filter impurities in the flue gas, thus improving practicality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the front structure of this application; Figure 2 This is a schematic diagram of the hybrid mechanism structure of this application; Figure 3 This is a schematic diagram of the filter mechanism structure in this application; Figure 4 This is a cross-sectional view of the combustion chamber structure of this application.

[0021] Explanation of reference numerals in the attached figures: 1. Combustion chamber; 2. Adjustment mechanism; 21. Handle; 22. Threaded rod; 23. Moving block; 3. Mixing mechanism; 31. Motor; 32. Rotating rod; 33. Driving gear; 34. Driven gear; 35. Stirring rod; 4. Filtering mechanism; 41. Filter box; 42. Limiting block; 43. Limiting frame; 44. Filter screen; 5. Delivery pipe one; 6. Venturi tube; 7. Exhaust fan; 8. Delivery pipe two; 9. Flow sensor one; 10. Oxygen content sensor; 11. Delivery pipe three; 12. Flow sensor two; 13. Baffle; 14. Nozzle; 15. Controller. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0023] Reference Figures 1-4 A flue gas recovery and utilization device includes a combustion chamber 1. A conveying pipe 5 is fixedly connected to the top of the combustion chamber 1. A venturi tube 6 is fixedly connected to the side of the conveying pipe 5 away from the combustion chamber 1. An adjustment mechanism 2 is provided inside the venturi tube 6. A mixing mechanism 3 is provided on one side of the adjustment mechanism 2. The mixing mechanism 3 includes a motor 31. The motor 31 is fixedly connected to the venturi tube 6. A rotating rod 32 is fixedly connected to the output end of the motor 31. The rotating rod 32 is rotatably connected to the venturi tube 6. A driving gear 33 is fixedly connected to one side of the rotating rod 32. A driven gear 34 meshes with one side of the driving gear 33. A stirring rod 35 is fixedly connected to one side of the driven gear 34. The stirring rod 35 is rotatably connected to the venturi tube 6. A conveying pipe 11 is fixedly connected to the top of the venturi tube 6. An induced draft fan 7 is fixedly connected to the side of the venturi tube 6 away from the conveying pipe 5. A conveying pipe 8 is fixedly connected to one side of the induced draft fan 7. A filter mechanism 4 is provided on the surface of the conveying pipe 8.

[0024] Reference Figures 1-2 The adjusting mechanism 2 includes a movable block 23, which is slidably connected to the venturi tube 6. A threaded rod 22 is rotatably connected to the surface of the movable block 23, and the threaded rod 22 is threadedly connected to the venturi tube 6. A handle 21 is fixedly connected to the side of the threaded rod 22 away from the movable block 23. By rotating the handle 21, the threaded rod 22 is driven to rotate, and then the rotation of the threaded rod 22 pushes the movable block 23 to move. The movement of the movable block 23 adjusts the width of the throat diameter of the venturi tube 6 to adapt to different flow ratios of flue gas and air. This allows for better adjustment of the throat diameter of the venturi tube 6 to adapt to different flow ratios of flue gas and air.

[0025] Reference Figure 3 The filtration mechanism 4 includes a filter box 41, which is fixedly connected to the conveying pipe 8. A limiting block 42 is fixedly connected inside the filter box 41. A limiting frame 43 is provided on one side of the limiting block 42. The limiting frame 43 is slidably connected to the filter box 41. A filter screen 44 is fixedly connected inside the limiting frame 43. An inspection door is provided on the surface of the filter box 41. Flue gas is conveyed to the inside of the filter box 41 through the conveying pipe 8. The limiting block 42 inside the filter box 41 limits the limiting frame 43. The limiting frame 43 then fixes the filter screen 44. The filter screen 44 then filters the impurities in the flue gas, which can better filter the impurities in the flue gas.

[0026] Reference Figure 4The combustion chamber 1 is fixedly connected to several nozzles 14, which are evenly distributed inside the combustion chamber 1. The nozzles 14 are fixedly connected to the delivery pipe 5. The mixture of flue gas and air is delivered to the nozzles 14 through the delivery pipe 5, and then the nozzles 14 spray out the mixture for combustion, thereby reducing nitrogen oxides in the air and thus better reducing nitrogen oxides in the air.

[0027] Reference Figures 1-2 A controller 15 is fixedly connected to the surface of the combustion chamber 1. A flow sensor 9 is fixedly connected between the induced draft fan 7 and the venturi tube 6. A flow sensor 12 is fixedly connected between the venturi tube 6 and the delivery pipe 11. Both the flow sensor 12 and the flow sensor 9 are electrically connected to the controller 15. The flow sensor 9 detects the flow rate of the flue gas, the flow sensor 12 detects the flow rate of the air, and the controller 15 controls the working state of the flow sensor 12 and the flow sensor 9, which can better control the working state of the flow sensor 12 and the flow sensor 9.

[0028] Reference Figure 2 The Venturi tube 6 has two rows of baffles 13 fixedly connected inside, and the two rows of baffles 13 are staggered inside the Venturi tube 6. The two rows of baffles 13 fixedly connected inside the Venturi tube 6 cause the gas to turbulent, which enhances the mixing degree of flue gas and air, and can better enhance the mixing degree of flue gas and air.

[0029] Reference Figure 2 An oxygen content sensor 10 is fixedly connected inside the venturi tube 6. The oxygen content sensor 10 and the induced draft fan 7 are both electrically connected to the controller 15. By fixing the oxygen content sensor 10 inside the venturi tube 6, and then controlling the wind speed of the induced draft fan 7 by the controller 15, the wind speed of the induced draft fan 7 can be better controlled.

[0030] Working principle: The second conveying pipe 8 is installed at the flue outlet. The induced draft fan 7 draws the flue gas into the second conveying pipe 8, which then conveys the flue gas to the filter box 41. The limiting block 42 inside the filter box 41 limits the limiting frame 43, which in turn fixes the filter screen 44. The filter screen 44 filters impurities from the flue gas. The induced draft fan 7 then conveys the flue gas to the venturi tube 6. The rotating handle 21 drives the threaded rod 22 to rotate, which in turn pushes the moving block 23 to move. The moving block 23 adjusts the width of the throat of the venturi tube 6 to adapt to different flow ratios of flue gas and air. Then, the air is delivered to the inside of the venturi tube 6 by the conveying pipe 31. The output end of the motor 31 rotates to drive the rotating rod 32 to rotate. The rotating rod 32 then drives the drive gear 33 to rotate. The drive gear 33 meshes with the driven gear 34 to make the stirring rod 35 rotate, mixing the flue gas and air. The flue gas and air inside the venturi tube 6 are then delivered to the inside of the combustion chamber 1 by the conveying pipe 5, and then sprayed out by the nozzle 14 for combustion.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. A flue gas recovery and utilization device, comprising a combustion chamber (1), characterized in that, A delivery pipe (5) is fixedly connected to the top of the combustion chamber (1). A venturi tube (6) is fixedly connected to the side of the delivery pipe (5) away from the combustion chamber (1). An adjustment mechanism (2) is provided inside the venturi tube (6). A mixing mechanism (3) is provided on one side of the adjustment mechanism (2). The mixing mechanism (3) includes a motor (31). The motor (31) is fixedly connected to the venturi tube (6). A rotating rod (32) is fixedly connected to the output end of the motor (31). The rotating rod (32) is rotatably connected to the venturi tube (6). A drive gear (33) is fixedly connected to one side of the drive gear (33), a driven gear (34) meshes with one side of the drive gear (33), a stirring rod (35) is fixedly connected to one side of the driven gear (34), the stirring rod (35) is rotatably connected to the venturi tube (6), a conveying pipe three (11) is fixedly connected to the top of the venturi tube (6), an induced draft fan (7) is fixedly connected to the side of the venturi tube (6) away from the first conveying pipe (5), a second conveying pipe (8) is fixedly connected to one side of the induced draft fan (7), and a filter mechanism (4) is provided on the surface of the second conveying pipe (8).

2. The flue gas recovery and utilization equipment according to claim 1, characterized in that, The adjustment mechanism (2) includes a moving block (23), which is slidably connected to the venturi tube (6). A threaded rod (22) is rotatably connected to the surface of the moving block (23). The threaded rod (22) is threadedly connected to the venturi tube (6). A handle (21) is fixedly connected to the side of the threaded rod (22) away from the moving block (23).

3. The flue gas recovery and utilization equipment according to claim 1, characterized in that, The filtration mechanism (4) includes a filter box (41), which is fixedly connected to the second conveying pipe (8). A limiting block (42) is fixedly connected inside the filter box (41). A limiting frame (43) is provided on one side of the limiting block (42). The limiting frame (43) is slidably connected to the filter box (41). A filter screen (44) is fixedly connected inside the limiting frame (43). An inspection door is provided on the surface of the filter box (41).

4. The flue gas recovery and utilization equipment according to claim 1, characterized in that, The combustion chamber (1) is fixedly connected to a number of nozzles (14), which are evenly distributed inside the combustion chamber (1). The nozzles (14) are fixedly connected to the delivery pipe (5).

5. The flue gas recovery and utilization equipment according to claim 1, characterized in that, A controller (15) is fixedly connected to the surface of the combustion chamber (1). A flow sensor (9) is fixedly connected between the induced draft fan (7) and the venturi tube (6). A flow sensor (12) is fixedly connected between the venturi tube (6) and the delivery pipe (11). Both the flow sensor (12) and the flow sensor (9) are electrically connected to the controller (15).

6. The flue gas recovery and utilization equipment according to claim 1, characterized in that, The Venturi tube (6) is fixedly connected to two rows of baffles (13), which are staggered inside the Venturi tube (6).

7. The flue gas recovery and utilization equipment according to claim 1, characterized in that, An oxygen content sensor (10) is fixedly connected inside the venturi tube (6), and the oxygen content sensor (10) and the induced draft fan (7) are both electrically connected to the controller (15).

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