A composite filtration device for multi-effect purification of exhaust gas from a vertical calcining furnace

Abstract

This utility model relates to the field of calcining furnace exhaust gas filtration technology, and discloses a composite filtration device for multi-effect purification of exhaust gas from a vertical calcining furnace. It includes a purification tank, an air inlet fixedly connected to the inner wall of the front top of the purification tank, a tank cover installed at the top of the purification tank, a driving component at the top of the tank cover, a partition fixedly connected to the center of the inner wall of the purification tank, a filter tank located at the top of the inner wall of the purification tank, and multiple arc-shaped scrapers fixedly connected to the outer wall of the bottom of the filter tank. A connecting pipe is fixedly connected to the inner wall of the partition, and multiple air outlet pipes are fixedly connected to the bottom of the connecting pipe. In this utility model, the driving component drives the filter tank and the cleaning plate to rotate, which not only enhances the filtration effect on impurities in the exhaust gas but also automatically cleans impurities. The partition and air outlet pipes guide the gas to distribute evenly, facilitating full contact and reaction between the exhaust gas and the alkaline solution, achieving efficient purification of the exhaust gas and ensuring stable operation of the device.

Description

Technical Field

[0001] This utility model relates to the field of calcining furnace exhaust gas filtration technology, and in particular to a composite filtration device for multi-effect purification of exhaust gas from a vertical calcining furnace. Background Technology

[0002] In industrial production, vertical calcining furnaces are widely used in the high-temperature calcination process of various materials. However, this process generates a large amount of waste gas. This waste gas often contains a variety of pollutants, such as dust particles, acidic gases (such as sulfur dioxide and nitrogen oxides), and some harmful volatile organic compounds. If these are discharged directly into the atmosphere without effective treatment, they will cause serious air pollution, endanger the ecological balance, and harm the health of surrounding residents.

[0003] In the current field of industrial waste gas purification, existing waste gas purification devices for waste gas generated by vertical calcining furnaces have revealed many problems that urgently need to be solved. One issue is in filtration and impurity removal. Many devices can only perform relatively coarse filtration, making it difficult to precisely intercept tiny impurities in the waste gas. As a result, a large amount of pollutants remain in the purified waste gas. Moreover, after a period of use, the filter components accumulate serious impurities, but there is a lack of an effective automatic cleaning mechanism. The cleaning work is cumbersome and time-consuming, which seriously affects the sustainability of the filtration effect. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a composite filtration device for multi-effect purification of exhaust gas from a vertical calcining furnace. This device solves the problems of poor filtration and impurity removal effects, uneven gas distribution, low neutralization efficiency, and slow exhaust gas discharge speed in existing exhaust gas purification devices.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A composite filtration device for multi-effect purification of exhaust gas from a vertical calcining furnace includes a purification barrel. An air inlet is fixedly connected to the inner wall of the front top of the purification barrel. A barrel cover is installed at the top of the purification barrel, and a driving assembly is located at the top of the barrel cover. A partition is fixedly connected to the center of the inner wall of the purification barrel. A filter barrel is located at the top of the inner wall of the purification barrel. Multiple arc-shaped scrapers are fixedly connected to the outer wall of the bottom of the filter barrel. A connecting pipe is fixedly connected to the inner wall of the partition, and multiple air outlet pipes are fixedly connected to the bottom of the connecting pipe. A rotating shaft is fixedly connected to the top of the filter barrel. A sleeve is fitted onto the outer wall of the rotating shaft. Cleaning plates are fixedly connected to the outer walls of both the front and rear sides of the sleeve. The opposite side of the cleaning plate is in close contact with the outer wall of the filter barrel. Both sides of the cleaning plate are sloped. An alkaline water tank is fixedly connected to the left outer wall of the purification barrel. A spraying assembly is located at the top of the alkaline water tank, and a liquid filling port is fixedly connected to the top of the alkaline water tank.

[0007] Furthermore, the top end of the connecting pipe is connected to the bottom end of the filter barrel, and the bottom end of the filter barrel is rotatably connected to the top end of the partition.

[0008] Furthermore, the drive assembly includes an L-shaped plate fixedly connected to the top of the bucket lid, a first motor is mounted on the top of the L-shaped plate, and the top of the rotating shaft is fixedly connected to the drive end of the first motor.

[0009] Furthermore, the drive assembly also includes a first bevel gear fixedly connected to the top outer wall of the rotating shaft, a second bevel gear meshing with the bottom outer wall of the first bevel gear, a third bevel gear meshing with the bottom outer wall of the second bevel gear, and the top of the sleeve fixedly connected to the inner wall of the third bevel gear.

[0010] Furthermore, the spraying assembly includes a water pump fixedly connected to the top of the alkaline water tank, a delivery pipe fixedly connected to the top of the water pump, an annular pipe fixedly connected to the top of the delivery pipe through the bottom inner wall of the purification tank, a plurality of water outlet pipes fixedly connected to the bottom of the annular pipe, a nozzle fixedly connected to the bottom of each water outlet pipe, and the top of the annular pipe fixedly connected to the bottom of the partition.

[0011] Furthermore, a ventilation hood is fixedly connected to the rear outer wall of the purification tank, and a fixing plate is fixedly connected to the inner walls of both the front and rear sides of the ventilation hood. A second motor is installed on the front side of each fixing plate, and a fan is fixedly connected to the drive end of each second motor.

[0012] Furthermore, a collection port is fixedly connected to the inner wall of the front top of the purification tank, and a valve is installed on the outer wall of the collection port.

[0013] Furthermore, a drain pipe is fixedly connected to the inner wall of the rear bottom of the purification tank, and a valve is installed on the outer wall of the drain pipe.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the filter barrel and cleaning plate are rotated by the drive component, which can not only enhance the filtration effect of impurities in the exhaust gas, but also automatically clean the impurities; the gas is guided to be evenly distributed by the baffle and the gas outlet pipe, which is conducive to the exhaust gas and alkaline solution to fully contact and react, thereby achieving efficient purification of exhaust gas and ensuring stable operation of the device.

[0016] 2. In this utility model, the alkaline solution is extracted, transported and atomized by starting the water pump, and then fully contacts the waste gas to neutralize the acidic substances; the second motor is started to drive the fan to rotate and form airflow, which accelerates the discharge of waste gas in the purification tank and improves the overall purification efficiency. Attached Figure Description

[0017] Figure 1 This is a perspective view of a composite filter device for multi-effect purification of exhaust gas from a vertical calcining furnace, as proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the partition structure of a composite filter device for multi-effect purification of exhaust gas from a vertical calcining furnace, as proposed in this utility model.

[0019] Figure 3 A cross-sectional view of the filter barrel of a composite filter device for multi-effect purification of exhaust gas from a vertical calcining furnace, as proposed in this utility model.

[0020] Figure 4 A schematic diagram of the water outlet pipe structure of a composite filter device for multi-effect purification of exhaust gas from a vertical calcining furnace, as proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the fixed plate structure of a composite filter device for multi-effect purification of exhaust gas from a vertical calcining furnace, as proposed in this utility model.

[0022] Legend:

[0023] 1. Purification tank; 2. Tank lid; 3. Ventilation hood; 4. Collection port; 5. Valve 1; 6. L-shaped plate; 7. First motor; 8. Air inlet; 9. Rotating shaft; 10. Filter tank; 11. Arc-shaped scraper; 12. Partition plate; 13. First bevel gear; 14. Second bevel gear; 15. Third bevel gear; 16. Sleeve; 17. Cleaning plate; 18. Connecting pipe; 19. Air outlet pipe; 20. Ring pipe; 21. Water outlet pipe; 22. Nozzle; 23. Alkali water tank; 24. Water pump; 25. Delivery pipe; 26. Liquid filling port; 27. Fixing plate; 28. Second motor; 29. ​​Fan; 30. Sewage pipe; 31. Valve 2. Detailed Implementation

[0024] 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.

[0025] Reference Figures 1-3This utility model provides an embodiment of a composite filtration device for multi-effect purification of exhaust gas from a vertical calcining furnace, comprising a purification tank 1, an air inlet 8 fixedly connected to the inner wall of the front top of the purification tank 1, a tank cover 2 installed at the top of the purification tank 1, a drive assembly provided at the top of the tank cover 2, a partition 12 fixedly connected to the center of the inner wall of the purification tank 1, a filter tank 10 provided at the top of the inner wall of the purification tank 1, multiple arc-shaped scrapers 11 fixedly connected to the outer wall of the bottom of the filter tank 10, a connecting pipe 18 fixedly connected to the inner wall of the partition 12, multiple air outlet pipes 19 fixedly connected to the bottom of the connecting pipe 18, a rotating shaft 9 fixedly connected to the top of the filter tank 10, a sleeve 16 sleeved on the outer wall of the rotating shaft 9, cleaning plates 17 fixedly connected to the outer walls of both the front and rear sides of the sleeve 16, the opposite side of the cleaning plate 17 being in close contact with the outer wall of the filter tank 10, and both sides of the cleaning plate 17 being inclined surfaces, and an alkaline water tank 23 fixedly connected to the outer wall of the left side of the purification tank 1. A spraying assembly is provided at the top of the 23. A liquid inlet 26 is fixedly connected to the top of the alkaline water tank 23. The top of the connecting pipe 18 is connected to the bottom of the filter bucket 10. The bottom of the filter bucket 10 is rotatably connected to the top of the partition plate 12. The drive assembly includes an L-shaped plate 6 fixedly connected to the top of the bucket cover 2. A first motor 7 is installed at the top of the L-shaped plate 6. The top of the rotating shaft 9 is fixedly connected to the drive end of the first motor 7. The drive assembly also includes a first bevel gear 13 fixedly connected to the outer wall of the top of the rotating shaft 9. A second bevel gear 14 is meshed with the outer wall of the bottom of the first bevel gear 13. A third bevel gear 15 is meshed with the outer wall of the bottom of the second bevel gear 14. The top of the sleeve 16 is fixedly connected to the inner wall of the third bevel gear 15. A collection port 4 is fixedly connected to the inner wall of the top of the front side of the purification bucket 1. A valve 5 is installed on the outer wall of the collection port 4. A drain pipe 30 is fixedly connected to the inner wall of the bottom of the rear side of the purification bucket 1. A valve 31 is installed on the outer wall of the drain pipe 30.

[0026] Specifically, the air inlet 8 is used for the exhaust gas to enter the purification tank 1. The exhaust gas is delivered to the interior of the purification tank 1 by an external air pump, providing an inlet for exhaust gas purification. The tank cover 2 seals the top of the purification tank 1 and provides an installation base for the drive assembly. The L-shaped plate 6 supports the first motor 7, ensuring the stable installation of the drive assembly. The first motor 7 drives the filter tank 10 to rotate through the drive shaft 9, realizing the rotation function of the filter tank 10. The power of the first motor 7 is transmitted to the filter tank 10 through the drive shaft 9, driving the filter tank 10 to rotate. When the filter tank 10 rotates, the arc-shaped scraper 11 scrapes the surface of the partition 12 to prevent impurities from accumulating. At the same time, the arc-shaped scraper 11 can scrape the impurities to the interior of the collection port 4, and the impurities are discharged through the collection port 4. The sleeve 16 can rotate around the drive shaft 9, providing rotational support for the cleaning plate 17. When the drive shaft 9 rotates, it drives the first bevel gear 13 to rotate, transmitting power through gear transmission. The first bevel gear 13 drives the second bevel gear The rotation of wheel 14 changes the direction of power transmission. The second bevel gear 14 drives the third bevel gear 15 to rotate, further changing the direction of power transmission and driving the sleeve 16 to rotate. The third bevel gear 15 transmits power to the sleeve 16, causing the sleeve 16 and the cleaning plate 17 to rotate. The cleaning plate 17 rotates with the sleeve 16, and its side is in close contact with the outer wall of the filter barrel 10 to clean the impurities on the outer wall of the filter barrel 10. The cleaning plate 17 rotates in the opposite direction to the filter barrel 10. The partition 12 divides the interior of the purification barrel 1 into upper and lower areas, guides the gas flow and supports the connecting pipe 18. The connecting pipe 18 passes through the partition 12 and guides the gas at the bottom of the filter barrel 10 to the lower outlet pipe 19. The outlet pipe 19 distributes the gas evenly to the lower part of the purification barrel 1. The exhaust gas moves from bottom to top, which facilitates full contact and reaction with the alkaline solution. The drive assembly drives the filter barrel 10 and the cleaning plate 17 to rotate to enhance filtration and automatically clean impurities, and works with the partition 12 and the outlet pipe 19 to guide the gas to be evenly distributed.

[0027] Collection port 4 is used to collect impurities in the exhaust gas. After being filtered by filter barrel 10, the impurities remain on the outer wall of filter barrel 10. The impurities on the outer wall of filter barrel 10 are scraped off by cleaning plate 17 and then scraped to the inner wall of collection port 4 by arc scraper 11 and then discharged. During the purification of exhaust gas, collection port 4 is closed by valve 5 to prevent exhaust gas from leaking out. After purification is completed, valve 5 is opened to discharge the impurities inside collection port 4. Drain pipe 30 is used to discharge the waste liquid generated during the purification process. Valve 31 controls the drainage operation.

[0028] Reference Figure 2 , Figure 4 and Figure 5The spraying assembly includes a water pump 24 fixedly connected to the top of the alkaline water tank 23, a delivery pipe 25 fixedly connected to the top of the water pump 24, an annular pipe 20 fixedly connected to the top of the delivery pipe 25 through the bottom inner wall of the purification tank 1, a plurality of water outlet pipes 21 fixedly connected to the bottom of the annular pipe 20, a nozzle 22 fixedly connected to the bottom of each water outlet pipe 21, the top of the annular pipe 20 fixedly connected to the bottom of the partition 12, a ventilation hood 3 fixedly connected to the rear outer wall of the purification tank 1, a fixing plate 27 fixedly connected to the front and rear inner walls of the ventilation hood 3, a second motor 28 installed on the front side of each fixing plate 27, and a fan 29 fixedly connected to the drive end of each second motor 28.

[0029] Specifically, the alkaline water tank 23 stores alkaline solution to provide an alkaline solution for waste gas purification. The liquid inlet 26 is used to add alkaline solution to the alkaline water tank 23 to replenish the consumed solution. The water pump 24 draws alkaline solution from the alkaline water tank 23 to provide a power source for the spraying components. The delivery pipe 25 receives the alkaline solution drawn by the water pump 24 and delivers it to the inside of the purification tank 1. The delivery pipe 25 passes through the bottom of the purification tank 1 and is fixed so that the alkaline solution can enter the annular pipe 20 inside the tank. The annular pipe 20 receives the alkaline solution through the delivery pipe 25, forming an annularly distributed liquid storage channel. Several water outlet pipes 21 are evenly distributed at the bottom of the annular pipe 20 to distribute the alkaline solution to each nozzle 22. The nozzles 22 atomize and spray the alkaline solution to fully contact the filtered waste gas in the purification tank 1 and neutralize acidic substances. The partition 12 supports the annular pipe 20 to ensure that the spraying position of the nozzles 22 is accurate and covers the area below the filter tank 10.

[0030] The ventilation hood 3 forms a closed space to accommodate the fan 29 and guide the purified gas out. The fixing plate 27 provides a mounting base for the second motor 28 to ensure the stable operation of the fan 29. The second motor 28 is fixed inside the ventilation hood 3 by the fixing plate 27 and drives the fan 29 to rotate. The fan 29 rotates under the drive of the second motor 28 to form an airflow, which accelerates the discharge and circulation of the waste gas in the purification tank 1. The acidic substances in the waste gas are neutralized by alkaline solution storage and atomized spraying, which, together with the fan 29, forms an airflow to accelerate the discharge of waste gas and improve the purification efficiency and gas circulation speed.

[0031] Working Principle: An external air pump delivers exhaust gas to the purification tank 1 through the air inlet 8. The exhaust gas first enters the top area of ​​the purification tank 1. The L-shaped plate 6 at the top of the tank cover 2 supports the first motor 7. The first motor 7 drives the rotating shaft 9 to rotate, which in turn drives the filter tank 10 to rotate. The arc-shaped scraper 11 at the bottom of the filter tank 10 simultaneously scrapes the surface of the partition 12 to prevent impurities from accumulating and scrapes the impurities towards the collection port 4. The first bevel gear 13 at the top of the rotating shaft 9 drives the second bevel gear 14 and the third bevel gear 15 to rotate, which in turn drives the sleeve 16 and the cleaning plate 17 to rotate around the rotating shaft 9. The cleaning plate 17 is in close contact with the outer wall of the filter tank 10, scraping off the impurities attached to the outer wall of the filter tank 10. The impurities are discharged through the collection port 4 under the control of the valve 5. The filtered exhaust gas enters the connecting pipe 18 through the bottom of the filter barrel 10, and then is evenly distributed to the lower area of ​​the purification barrel 1 through the exhaust pipe 19 at the bottom of the connecting pipe 18. The water pump 24 replenishes the alkali solution from the alkali tank 23 through the liquid filling port 26, and then pumps the alkali solution into the ring pipe 20 through the conveying pipe 25. The ring pipe 20 delivers the alkali solution to the nozzle 22 for atomization and spraying through the water outlet pipe 21. It comes into full contact with the exhaust gas moving from bottom to top in the area below the partition 12, neutralizing the acidic substances. The purified gas is discharged under the airflow generated by the second motor 28 driving the fan 29 in the ventilation hood 3. The waste liquid generated during the purification process is discharged through the drain pipe 30 under the control of the valve 31.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite filtration device for multi-effect purification of exhaust gas from a vertical calcining furnace, characterized in that, The system includes a purification tank (1), an air inlet (8) fixedly connected to the inner wall of the front top of the purification tank (1), a tank cover (2) installed at the top of the purification tank (1), a drive assembly provided at the top of the tank cover (2), a partition (12) fixedly connected to the center of the inner wall of the purification tank (1), a filter tank (10) provided at the top of the inner wall of the purification tank (1), a plurality of arc-shaped scrapers (11) fixedly connected to the outer wall of the bottom end of the filter tank (10), a connecting pipe (18) fixedly connected to the inner wall of the partition (12), and a plurality of air outlets fixedly connected to the bottom end of the connecting pipe (18). The filter barrel (10) is fixedly connected to a rotating shaft (9) at the top. The outer wall of the rotating shaft (9) is fitted with a sleeve (16). The front and rear outer walls of the sleeve (16) are fixedly connected with cleaning plates (17). The opposite side of the cleaning plate (17) is in close contact with the outer wall of the filter barrel (10). The left and right sides of the cleaning plate (17) are both set as inclined surfaces. The alkaline water tank (23) is fixedly connected to the left outer wall of the purification barrel (1). The top of the alkaline water tank (23) is provided with a spraying component. The top of the alkaline water tank (23) is fixedly connected with a liquid filling port (26).

2. The composite filter device for multi-effect purification of exhaust gas from a vertical calcining furnace according to claim 1, characterized in that: The top end of the connecting pipe (18) is connected to the bottom end of the filter barrel (10), and the bottom end of the filter barrel (10) is rotatably connected to the top end of the partition plate (12).

3. The composite filter device for multi-effect purification of exhaust gas from a vertical calcining furnace according to claim 1, characterized in that: The drive assembly includes an L-shaped plate (6) fixedly connected to the top of the lid (2), a first motor (7) is mounted on the top of the L-shaped plate (6), and the top of the rotating shaft (9) is fixedly connected to the drive end of the first motor (7).

4. The composite filter device for multi-effect purification of exhaust gas from a vertical calcining furnace according to claim 1, characterized in that: The drive assembly also includes a first bevel gear (13) fixedly connected to the top outer wall of the rotating shaft (9), a second bevel gear (14) meshing with the bottom outer wall of the first bevel gear (13), a third bevel gear (15) meshing with the bottom outer wall of the second bevel gear (14), and the top of the sleeve (16) fixedly connected to the inner wall of the third bevel gear (15).

5. The composite filter device for multi-effect purification of exhaust gas from a vertical calcining furnace according to claim 1, characterized in that: The spraying assembly includes a water pump (24) fixedly connected to the top of the alkaline water tank (23), a delivery pipe (25) fixedly connected to the top of the water pump (24), an annular pipe (20) fixedly connected to the top of the delivery pipe (25) through the bottom inner wall of the purification tank (1), a plurality of water outlet pipes (21) fixedly connected to the bottom of the annular pipe (20), a nozzle (22) fixedly connected to the bottom of each water outlet pipe (21), and the top of the annular pipe (20) fixedly connected to the bottom of the partition (12).

6. The composite filter device for multi-effect purification of exhaust gas from a vertical calcining furnace according to claim 1, characterized in that: A ventilation hood (3) is fixedly connected to the rear outer wall of the purification tank (1). A fixing plate (27) is fixedly connected to the inner walls of the front and rear sides of the ventilation hood (3). A second motor (28) is installed on the front side of the fixing plate (27). A fan (29) is fixedly connected to the drive end of the second motor (28).

7. The composite filter device for multi-effect purification of exhaust gas from a vertical calcining furnace according to claim 1, characterized in that: A collection port (4) is fixedly connected to the inner wall of the front top of the purification tank (1), and a valve (5) is installed on the outer wall of the collection port (4).

8. The composite filter device for multi-effect purification of exhaust gas from a vertical calcining furnace according to claim 1, characterized in that: A drain pipe (30) is fixedly connected to the inner wall of the bottom rear side of the purification tank (1), and a valve (31) is installed on the outer wall of the drain pipe (30).

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