Tail gas recycling device for double-mineral roasting kiln

Abstract

The utility model relates to the technical field of roasting kiln tail gas recovery, in particular to a double-mineral roasting kiln tail gas recycling device which comprises an air inlet base, threads are arranged on the inner side of the lower end of the air inlet base and used for being connected with kiln tail gas, four foot supports are connected to the outer side of the lower portion of the air inlet base, and an installation frame is installed on the upper side of the air inlet base. An air outlet is formed in the right upper side of the air outlet pipe and used for being connected with an air collecting device, a first flow guide plate is connected to the inner side of the air outlet pipe, and a second flow guide plate is connected to the inner side of the air outlet pipe. The S-shaped gas trend design is combined with the spraying assembly, the waste gas treatment time is effectively prolonged, the absorption efficiency of harmful ingredients is improved, the built-in filter plate is matched with the cleaning mechanism, dust blockage is prevented, long-term stable operation of the device is ensured, and in addition, waste liquid is recycled through the liquid pumping mechanism.

Description

Technical Field

[0001] This utility model relates to the field of roasting kiln tail gas recovery technology, and in particular to a dual-mineral roasting kiln tail gas recycling device. Background Technology

[0002] In the mineral processing industry, roasting kilns are common production equipment used to process mineral raw materials and extract target components. However, a large amount of high-temperature exhaust gas is generated during the roasting process. This exhaust gas usually contains dust, harmful gases, and unreacted chemical substances. If it is directly discharged into the atmosphere, it will not only cause serious environmental pollution, but also lead to resource waste. Existing devices often adopt a simple straight-through pipe design, and the exhaust gas has a short residence time in the pipe, which results in the harmful components not being fully absorbed or treated, and the purification effect is poor. The dust carried in the exhaust gas is easy to accumulate in the pipe or filter device, causing equipment blockage and affecting normal operation. At the same time, it requires frequent shutdowns for cleaning, which also increases maintenance costs.

[0003] Therefore, in order to address the above problems, a dual-mineral roasting kiln tail gas recycling device is now being developed. Utility Model Content

[0004] To overcome the shortcomings of existing devices that often use simple straight-through pipe designs, resulting in short residence time of exhaust gas in the pipes, which leads to insufficient absorption or treatment of harmful components and poor purification effect, dust entrained in the exhaust gas easily accumulates in the pipes or filter devices, causing equipment blockage and affecting normal operation, and requiring frequent shutdowns for cleaning, which also increases maintenance costs, this utility model provides a dual-mineral roasting kiln exhaust gas recycling device.

[0005] The technical implementation scheme of this utility model is as follows: a dual-mineral roasting kiln tail gas recycling device, including an air inlet base, the lower inner side of which is threaded for connecting kiln tail gas, four feet connected to the lower outer side of the air inlet base, an installation frame installed on the upper side of the air inlet base, an air outlet pipe connected to the upper right side of the installation frame, the air outlet pipe having an inclined structure, an air outlet opening on the upper right side of the air outlet pipe for connecting to a gas collection device, a first guide plate connected to the inner side of the air outlet pipe, and a second guide plate connected to the inner side of the air outlet pipe, with two of each type of guide plate. The first and second guide plates are placed crosswise and interact with each other to make the gas form an S-shaped direction and prolong the residence time. The gas outlet pipe is equipped with a spraying assembly, which includes a liquid inlet pipe. The liquid inlet pipe is connected to the upper middle part of the gas outlet pipe. The liquid inlet pipe is arranged in a rearward direction and has two openings. The lower part of the liquid inlet pipe is connected to a nozzle. There are three nozzles. The nozzles are connected to the gas outlet pipe. The upper inner side of the air inlet base is connected to a mounting plate. A filter plate is snap-fitted into the mounting plate. The air inlet base is equipped with a cleaning mechanism for cleaning the filter plate.

[0006] Furthermore, the cleaning mechanism includes a drive assembly, which consists of a drive motor, a rotating shaft, a first bevel gear, and a second bevel gear. The drive motor is mounted on the right side of the middle of the air intake base. The output shaft of the drive motor is oriented to the left. The rotating shaft is connected to the output shaft of the drive motor and is rotatably connected to the air intake base. The first bevel gear is connected to the middle of the rotating shaft, and the second bevel gear meshes with the first bevel gear. A mounting post is connected to the inner side of the second bevel gear. A cleaning brush is connected to the middle of the mounting post. The cleaning brush is located below the filter plate and is rotatably connected to the filter plate. A first fixing member is rotatably connected to the upper part of the mounting post and is detachably connected to the air intake base. A second fixing member is rotatably connected to the lower part of the mounting post and is connected to the air intake base.

[0007] Furthermore, it also includes a liquid extraction mechanism, which is provided on the mounting frame. The liquid extraction mechanism includes a third guide plate, which is connected inside the mounting frame. The third guide plate has an inverted funnel-shaped structure. A fourth guide plate is connected inside the mounting frame. The fourth guide plate has a flying disc-shaped structure and is located below the third guide plate. A liquid pump is installed on the lower right side of the mounting frame. The liquid pump is in contact with the fourth guide plate, and the liquid pump inlet acts on the fourth guide plate.

[0008] Furthermore, the air intake base has a funnel-shaped structure.

[0009] Furthermore, the mounting plate has an arc-shaped structure.

[0010] Furthermore, a baffle is connected to the upper side of the fourth guide plate to prevent the collected liquid from flowing out.

[0011] By adopting the above technical solution, compared with the prior art, this utility model has the following advantages:

[0012] This utility model adopts an S-shaped gas flow design combined with a spraying component, which effectively extends the waste gas treatment time and improves the absorption efficiency of harmful components. The built-in filter plate, together with the cleaning mechanism, not only prevents dust blockage but also ensures the long-term stable operation of the device. In addition, the liquid pumping mechanism enables the recycling and reuse of waste liquid. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0015] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the cleaning mechanism of this utility model.

[0016] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the liquid extraction mechanism of this utility model.

[0017] In the attached diagrams: 1. Mounting frame; 2. Air inlet base; 3. Air outlet pipe; 31. First guide plate; 32. Second guide plate; 4. Spraying assembly; 41. Liquid inlet pipe; 42. Nozzle; 5. Filter plate; 6. Mounting plate; 7. Cleaning mechanism; 71. Drive assembly; 72. Mounting column; 73. Cleaning brush; 74. First fixing component; 75. Second fixing component; 8. Liquid extraction mechanism; 81. Third guide plate; 82. Fourth guide plate; 83. Liquid pump. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] A dual-mineral roasting kiln tail gas recycling device, such as Figures 1-4As shown, the system includes an air inlet base 2, which has a funnel-shaped structure. The lower inner side of the air inlet base 2 is threaded for connecting to the kiln tail gas. Four feet are connected to the lower outer side of the air inlet base 2. An installation frame 1 is mounted on the upper side of the air inlet base 2. An outlet pipe 3 is connected to the upper right side of the installation frame 1. The outlet pipe 3 has an inclined structure and an outlet on its upper right side for connecting to a gas collecting device. A first guide plate 31 and a second guide plate 32 are connected to the inner side of the outlet pipe 3. There are two of each type of guide plate 31 and guide plate 32. The first guide plate 31 and the second guide plate 32 are placed crosswise and interact with each other, causing the gas to form an S-shaped flow. To extend the dwell time, a spraying assembly 4 is provided on the air outlet pipe 3. The spraying assembly 4 includes a liquid inlet pipe 41, which is connected to the upper middle part of the air outlet pipe 3. The liquid inlet pipe is arranged in a rearward direction and has two openings. A nozzle 42 is connected to the lower part of the liquid inlet pipe. There are three nozzles 42, which are connected to the air outlet pipe 3. An mounting plate 6 is connected to the upper inner side of the air inlet base 2. The mounting plate 6 has an arc-shaped structure. A filter plate 5 is snap-fitted into the mounting plate 6. A cleaning mechanism 7 is provided inside the air inlet base 2 for cleaning the filter plate 5. The cleaning mechanism 7 includes a drive assembly 71, which consists of a drive motor, a rotating shaft, a first bevel gear, and a second bevel gear. The system consists of a wheel assembly. A drive motor is mounted on the right side of the middle of the air intake base 2. The output shaft of the drive motor faces left and is connected to a rotating shaft. The rotating shaft is rotatably connected to the air intake base 2. A first bevel gear is connected to the middle of the rotating shaft, and a second bevel gear meshes with the first bevel gear. A mounting post 72 is connected to the inner side of the second bevel gear. A cleaning brush 73 is connected to the middle of the mounting post 72. The cleaning brush 73 is located below the filter plate 5 and is rotatably connected to the filter plate 5. A first fixing member 74 is rotatably connected to the upper part of the mounting post 72 and is detachably connected to the air intake base 2. A second fixing member is rotatably connected to the lower part of the mounting post 72. 75. The second fixing component 75 is connected to the air intake base 2 and also includes a liquid extraction mechanism 8. The liquid extraction mechanism 8 is provided on the mounting frame 1. The liquid extraction mechanism 8 includes a third guide plate 81. The third guide plate 81 is connected inside the mounting frame 1. The third guide plate 81 has an inverted funnel-shaped structure. The fourth guide plate 82 is connected inside the mounting frame 1. The fourth guide plate 82 has a flying disc-shaped structure. A baffle is connected to the upper side of the fourth guide plate 82 to prevent liquid from flowing out. The fourth guide plate 82 is located below the third guide plate 81. A liquid pump 83 is installed on the lower right side of the mounting frame 1. The liquid pump 83 is in contact with the fourth guide plate 82. The liquid inlet of the liquid pump 83 acts on the fourth guide plate 82.

[0020] It should be noted that this device can be used to recycle the exhaust gas generated by the roasting kiln. First, place the device in the exhaust gas emission area of ​​the roasting kiln. Then, use a high-temperature resistant pipe to achieve a sealed connection with the exhaust gas outlet of the roasting kiln through the threaded interface at the lower end of the air inlet base 2. Next, connect the opening of the air outlet pipe 3 to the gas collection device to ensure unobstructed airflow. Then, connect the two interfaces of the liquid inlet pipe 41 to the corresponding mineral liquid supply pipelines. A flow control valve can also be installed to adjust the spray volume. After all preparations are complete, the roasting kiln can be started. In the process, the exhaust gas produced by the kiln is discharged into the air inlet base 2 through a pipe. As the exhaust gas rises, it passes through the filter plate 5, which intercepts the dust inside, preventing it from entering the subsequent treatment process and causing blockage. Over time, dust will gradually accumulate on the surface of the filter plate 5. At this time, the drive motor needs to be started. The output shaft of the drive motor drives the rotating shaft to rotate, thereby driving the first bevel gear and the second bevel gear to mesh, causing the mounting column 72 to rotate, so that the cleaning brush 73 removes the dust accumulated on the filter plate 5. After cleaning is completed, the drive motor is turned off, and the cleaned dust falls to the bottom of the air inlet base 2 due to gravity. Within the connected pipeline, only periodic pipe replacement is required. To ensure stable operation of the cleaning brush 73, a first fixing component 74 and a second fixing component 75 are provided to support the mounting column 72. The remaining gas continues to rise and enters the outlet pipe 3 through the mounting frame 1. Due to the cross-arrangement design of the first guide plate 31 and the second guide plate 32, the gas forms an S-shaped path inside the outlet pipe 3, extending the gas residence time. At this time, the spraying component 4 is activated, and the slurry is sprayed out from the nozzle 42 through the inlet pipe 41 and adheres to the exhaust gas. The gas and liquid droplets come into full contact, improving the efficiency of the cleaning process. The absorption efficiency of harmful components is improved. Gaseous pollutants are absorbed by droplets and converted into liquid compounds. Waste gas that cannot be liquefied in time is collected by the gas collection device to avoid direct discharge into the external environment. The inclined design of the gas outlet pipe 3 helps the waste liquid flow to the left under the action of gravity and finally fall on the third guide plate 81. The third guide plate 81 is designed with an umbrella-shaped structure, which can effectively guide the waste liquid to the fourth guide plate 82. The latter is equipped with baffles to prevent waste liquid from splashing and ensure that the liquid is collected in a concentrated manner. Finally, by starting the liquid pump 83, the waste liquid can be pumped into a designated container to complete the recycling process.

[0021] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A device for recycling tail gas from a dual-mineral roasting kiln, characterized in that: it includes... The system has an air inlet base (2) and a first guide plate (31). The lower inner side of the air inlet base (2) is threaded for connecting to the kiln tail gas. Four feet are connected to the lower outer side of the air inlet base (2). An installation frame (1) is installed on the upper side of the air inlet base (2). An air outlet pipe (3) is connected to the upper right side of the installation frame (1). The air outlet pipe (3) has an inclined structure and an air outlet on the upper right side for connecting to the gas collection device. The first guide plate (31) is connected to the inner side of the air outlet pipe (3). A second guide plate (32) is connected to the inner side of the air outlet pipe (3). There are two of each of the first guide plate (31) and the second guide plate (32). The first guide plate (31) and the second guide plate (32) intersect. The gas is placed and interacts with each other to form an S-shaped direction and prolong the residence time. The gas outlet pipe (3) is equipped with a spraying component (4). The spraying component (4) includes a liquid inlet pipe (41). The liquid inlet pipe (41) is connected to the upper side of the middle part of the gas outlet pipe (3). The liquid inlet pipe (41) is arranged in a rearward direction. The liquid inlet pipe (41) has two openings. The lower side of the liquid inlet pipe (41) is connected to a nozzle (42). There are 3 nozzles (42). The nozzles (42) are connected to the gas outlet pipe (3). The upper inner side of the air inlet base (2) is connected to a mounting plate (6). The mounting plate (6) is snap-fit ​​connected to a filter plate (5). The air inlet base (2) is equipped with a cleaning mechanism (7) for cleaning the filter plate (5).

2. The dual-mineral roasting kiln tail gas recycling device according to claim 1, characterized in that: The cleaning mechanism (7) includes a drive assembly (71), which consists of a drive motor, a rotating shaft, a first bevel gear, and a second bevel gear. The drive motor is installed on the right side of the middle of the air intake base (2). The output shaft of the drive motor is oriented to the left. The rotating shaft is connected to the output shaft of the drive motor and is rotatably connected to the air intake base (2). The first bevel gear is connected to the middle of the rotating shaft. The second bevel gear meshes with the first bevel gear. The inner side of the second bevel gear is connected to... There is a mounting post (72), and a cleaning brush (73) is connected to the middle of the mounting post (72). The cleaning brush (73) is located on the lower side of the filter plate (5). The cleaning brush (73) is rotatably connected to the filter plate (5). A first fixing member (74) is rotatably connected to the upper part of the mounting post (72). The first fixing member (74) is detachably connected to the air intake base (2). A second fixing member (75) is rotatably connected to the lower part of the mounting post (72). The second fixing member (75) is connected to the air intake base (2).

3. The dual-mineral roasting kiln tail gas recycling device according to claim 1, characterized in that: It also includes a liquid extraction mechanism (8), which is provided on the mounting frame (1). The liquid extraction mechanism (8) includes a third guide plate (81), which is connected inside the mounting frame (1). The third guide plate (81) has an inverted funnel-shaped structure. A fourth guide plate (82) is connected inside the mounting frame (1). The fourth guide plate (82) has a flying disc-shaped structure and is located below the third guide plate (81). A liquid pump (83) is installed on the lower right side of the mounting frame (1). The liquid pump (83) is in contact with the fourth guide plate (82), and the liquid inlet of the liquid pump (83) acts on the fourth guide plate (82).

4. A dual-mineral roasting kiln tail gas recycling device according to claim 1, characterized in that: The air intake base (2) has a funnel-shaped structure.

5. A dual-mineral roasting kiln tail gas recycling device according to claim 1, characterized in that: The mounting plate (6) has an arc-shaped structure.

6. A dual-mineral roasting kiln tail gas recycling device according to claim 3, characterized in that: The upper side of the fourth guide plate (82) is connected to a baffle to prevent the liquid from flowing out.

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