Rotary kiln flue gas purification equipment

Abstract

The utility model relates to rotary kiln flue gas purification equipment which comprises a dry-type tower and a wet-type tower, a plurality of filter assemblies are arranged in the dry-type tower, a scraping assembly is arranged at the bottom of the wet-type tower and comprises a mounting plate slidably connected to the bottom of the wet-type tower, a plurality of scrapers are arranged on the mounting plate, and the scraping surfaces of the scrapers abut against the bottom surface of the wet-type tower. A driving assembly is arranged in the wet type tower, a slag discharging groove is formed in the bottom face of the wet type tower, a slag discharging pipe communicated with the slag discharging groove is arranged on the wet type tower, an electromagnetic valve is arranged on the slag discharging pipe, the driving assembly drives a scraping assembly to scrape sediments accumulated at the bottom of the wet type tower, and the content of the sediments at the bottom of the wet type tower is reduced. Therefore, the possibility that the precipitate is decomposed into harmful gas again is reduced. The flue gas purification device has the effect of improving the flue gas purification effect.

Description

Technical Field

[0001] This application relates to the technical field of flue gas treatment, and particularly to a rotary kiln flue gas purification device. Background Art

[0002] A rotary kiln is a thermal equipment widely used in the industrial field, mainly used for the heat treatment of materials and chemical reaction processes. A large amount of flue gas is generated during the processing of the rotary kiln. These flue gases usually contain a large amount of particulate impurities and harmful gases. Direct emission into the air will cause serious air pollution. Therefore, it is necessary to use a flue gas purification device to purify the flue gas.

[0003] Existing flue gas treatment methods usually adopt the dry-wet purification method. When purifying flue gas, the particulate impurities mixed in the flue gas are first filtered through a filter plate. The flue gas after dry purification is introduced into the absorption liquid, and the remaining harmful substances mixed in the flue gas are removed by chemical reactions, thereby completing the double purification of the flue gas.

[0004] However, after the chemical reaction between the absorption liquid and the harmful substances in the flue gas, a large amount of precipitates will be generated. These precipitates accumulate in large quantities at the bottom of the wet tower under the action of gravity. When the temperature of the wet tower rises due to high temperature in summer or a large amount of high-temperature flue gas entering the interior, some precipitates will decompose into harmful gases again due to high temperature and mix with the flue gas, resulting in an increase in the content of harmful gases in the flue gas, thus leading to a poor purification effect of the flue gas, which has obvious deficiencies. Utility Model Content

[0005] In order to improve the purification effect of flue gas, this application provides a rotary kiln flue gas purification device.

[0006] The rotary kiln flue gas purification device provided by this application adopts the following technical solutions:

[0007] A rotary kiln flue gas purification device includes a dry tower and a wet tower. The dry tower and the wet tower are connected by a connecting pipe. A plurality of filter components are arranged in the dry tower. A scraping component is arranged at the bottom of the wet tower. The scraping component includes a mounting plate slidably connected to the bottom of the wet tower. A plurality of scraping plates are arranged on the mounting plate. The scraping surface of the scraping plate abuts against the bottom surface of the wet tower. A driving component is arranged in the wet tower. The driving component drives the mounting plate to reciprocate along the bottom surface of the wet tower. A slag discharge groove is formed in the bottom surface of the wet tower. The slag discharge surface of the slag discharge groove is inclined. A slag discharge pipe communicating with the slag discharge groove is arranged on the wet tower. An electromagnetic valve is arranged on the slag discharge pipe.

[0008] By adopting the above technical solution, the driving component drives the mounting plate to reciprocate along the bottom surface of the wet tower. The movement of the mounting plate drives the movement of the scraper. When the scraper moves, it scrapes out the sediment accumulated on the bottom surface of the wet tower and pushes it into the slag discharge tank. The sediment moves into the slag discharge pipe in the inclined slag discharge tank. When the sediment in the slag discharge pipe accumulates to a certain height, the solenoid valve is started to discharge the sediment. This setting realizes the automatic scraping of the sediment at the bottom of the wet tower, reduces the sediment content at the bottom of the wet tower, thereby reducing the possibility of the sediment decomposing back into harmful gases, and further improving the purification effect of the flue gas.

[0009] Optionally, the driving component includes a reciprocating lead screw and a guide rod arranged at both ends of the wet tower. The reciprocating lead screw is rotatably connected inside the wet tower. One end of the mounting plate is slidably connected to the reciprocating lead screw through a ball slider, and the other end is slidably connected to the guide rod. A second motor for driving the reciprocating lead screw to rotate is arranged on the outer side wall of the wet tower.

[0010] By adopting the above technical solution, when the second motor is started, it drives the reciprocating lead screw to rotate. The rotation of the reciprocating lead screw drives the mounting plate to reciprocate along the length of the reciprocating lead screw. At the same time, under the guidance of the guide rod, the stability of the mounting plate during the movement is ensured. In this way, the reciprocating movement of the mounting plate on the bottom surface of the wet tower is realized.

[0011] Optionally, a rotating shaft corresponding to each of the plurality of scrapers is rotatably connected inside the mounting plate. One end of the rotating shaft is fixedly connected to the scraper, and the other end is fixedly connected to a gear. The plurality of gears are rotatably connected to the surface of the mounting plate. A rack plate is arranged on the inner side wall of the wet tower, and the rack plate is meshed with the gear close to the rack plate.

[0012] By adopting the above technical solution, the movement of the mounting plate drives the gear to move along the length of the rack plate. Since the rack plate is fixedly connected to the inner side wall of the wet tower, the rack plate drives the moving gear to rotate. At the same time, under the transmission action of the meshing of the plurality of gears with each other, the plurality of gears rotate synchronously and drive the rotating shaft to rotate. The rotating shaft rotates the scraper to scrape the sediment on the bottom surface of the wet tower. The rotating scraper generates scraping forces in multiple directions on the sediment, so that the probability of the sediment being removed by the scraper is increased, and the content of the sediment accumulated at the bottom of the wet tower is further reduced.

[0013] Optionally, a spraying component is arranged inside the wet tower. The spraying component includes a liquid supply tank arranged on the outer side wall of the wet tower. A liquid supply pipe is arranged on the liquid supply tank. A liquid supply pump is arranged on the liquid supply pipe. The liquid outlet end of the liquid supply pipe extends into the wet tower and is communicated with a plurality of liquid outlet pipes. A plurality of atomizing nozzles are arranged on the liquid outlet pipes.

[0014] By adopting the above technical solution, the liquid supply pump starts to extract the absorption liquid in the liquid supply tank into the liquid supply pipe. The absorption liquid flows through the liquid supply pipe into the liquid outlet pipe and finally becomes tiny water droplets sprayed towards the flue gas. When the absorption liquid contacts the flue gas, a chemical reaction occurs. The harmful gases in the flue gas become precipitates and fall to the bottom of the wet tower. The flue gas purified by the absorption liquid continues to move upward and is discharged from the exhaust port. The setting of the atomizing nozzle effectively increases the contact area between the absorption liquid and the flue gas, increases the probability that the harmful gases in the flue gas are reacted by the absorption liquid, and thus further improves the purification effect on the flue gas.

[0015] Optionally, the filtering assembly includes two filter plates, and two adjacent filter plates are arranged staggered inside the dry tower.

[0016] By adopting the above technical solution, the staggered filter plates make the flue gas need to pass through a more tortuous path when passing through the filter plates, prolong the contact time between the flue gas and the filter plates, improve the filtering effect of the filter plates on the solid particles in the flue gas, and thus improve the purification effect on the flue gas.

[0017] Optionally, the filter plate is slidably connected inside the dry tower. A slider is arranged on the filter plate, and a sliding groove slidably matched with the slider is formed on the inner side wall of the dry tower. A straight tooth plate is arranged on the outer surface of the slider, and two adjacent straight tooth plates are arranged staggered. A half gear corresponding to the filtering assembly one by one is rotatably connected to the inner side wall of the dry tower. The toothed end of the half gear is meshed with the straight tooth plate. A spring is arranged in the sliding groove. One end of the spring is connected to the inner side wall of the sliding groove, and the other end is connected to the slider. In the natural state of the spring, the end face of the filter plate abuts against the inner side wall of the dry tower. A rotating assembly for driving a plurality of the half gears to rotate is arranged on the outer side wall of the dry tower.

[0018] By adopting the above technical solution, the rotating assembly drives the half gear to rotate. When the toothed end of the half gear is meshed with the rack plate, the half gear drives the rack plate to move towards the opposite rack plate. The spring is stretched by the rack plate, and the rack plate drives the filter plate to move towards the opposite filter plate. When the toothed end of the half gear disengages from the rack plate, the pulling force on the spring disappears, and the elastic force accumulated by the spring is instantly released to drive the rack plate to instantly reset. The rack plate drives the filter plate to impact on the inner side wall of the dry tower. At the moment of impact, the solid particles blocked in the filter holes are shaken off the filter plate. This setting avoids the possibility of the filter plate being blocked due to the accumulation of solid particles and effectively ensures the filtering effect of the filter plate.

[0019] Optionally, a plurality of refrigerating ring pieces are sleeved on the outer side wall of the connecting pipe.

[0020] By adopting the above technical solution, the setting of the refrigeration ring plate effectively reduces the temperature of the flue gas entering the wet tower, thereby reducing the possibility of sediment decomposition inside the wet tower caused by excessive flue gas temperature, and further improving the purification effect of the flue gas.

[0021] Optionally, the reciprocating lead screw, the gear and the rack plate are all coated with an anti-corrosion coating.

[0022] By adopting the above technical solution, the setting of the anti-corrosion coating effectively isolates the influence of sediment and absorbent liquid on the reciprocating lead screw, gear and rack plate, ensuring the smooth operation of the scraping component and the driving component.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting a driving component and a scraping component in the present application, the driving component drives the scraping component to scrape the sediment accumulated at the bottom of the wet tower, reducing the sediment content at the bottom of the wet tower, thereby reducing the possibility of the sediment decomposing back into harmful gases, and further improving the purification effect of the flue gas;

[0025] 2. By setting a filtering component, a semi-gear, a straight tooth plate and a spring in the present application, when the toothed end of the semi-gear meshes with the rack plate, the semi-gear drives the rack plate to move towards the opposite rack plate, the spring is stretched by the rack plate, and the rack plate drives the filter plate to move towards the opposite filter plate. When the toothed end of the semi-gear disengages from the rack plate, the tension on the spring disappears, and the elastic force accumulated by the spring is instantaneously released to drive the rack plate to instantaneously reset. The rack plate drives the filter plate to impact on the inner wall of the dry tower. At the moment of impact, the solid particles blocked in the filter holes are shaken off the filter plate. This setting avoids the possibility of the filter plate being blocked due to the accumulation of solid particles, effectively ensuring the filtering effect of the filter plate; BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the present application.

[0027] Figure 2 is a sectional view of the chute and the guide groove in the embodiment of the present application.

[0028] Figure 3 is a sectional view of the dry tower in the embodiment of the present application.

[0029] Figure 4 is a sectional view of the wet tower in the embodiment of the present application.

[0030] Figure 5 is a sectional view of the mounting plate in the embodiment of the present application.

[0031] Description of reference numerals: 01, dry tower; 011, guiding groove; 012, sliding groove; 02, wet tower; 021, exhaust port; 03, connecting pipe; 1, filtering assembly; 101, filter plate; 102, guiding block; 103, sliding block; 2, refrigerating ring plate; 3, spraying assembly; 31, liquid supply tank; 32, liquid supply pipe; 33, liquid supply pump; 34, liquid outlet pipe; 35, atomizing nozzle; 4, scraping assembly; 41, mounting plate; 42, scraping plate; 5, driving assembly; 51, reciprocating lead screw; 52, guiding rod; 53, second motor; 6, straight tooth plate; 7, half gear; 8, spring; 9, rotating assembly; 91, first motor; 92, belt pulley; 93, belt; 10, rotating shaft; 11, gear; 12, rack plate; 13, slag discharge tank; 131, slag discharge pipe; 132, solenoid valve. Detailed implementation manners

[0032] The following further elaborates on this application Figures 1-5 in conjunction with the appended drawings.

[0033] An embodiment of this application discloses a rotary kiln flue gas purification device.

[0034] Referring to Figure 1 , a rotary kiln flue gas purification device includes a dry tower 01 and a wet tower 02. A plurality of filtering assemblies 1 are arranged inside the dry tower 01. An air inlet pipe communicating with the smoke exhaust pipe of the rotary kiln is installed on the dry tower 01. The air outlet end of the dry tower 01 is connected and provided with a connecting pipe 03. A plurality of refrigerating ring plates 2 are fixedly installed on the outer surface of the connecting pipe 03. The air outlet end of the connecting pipe 03 is communicated with the bottom end of the wet tower 02. A spraying assembly 3 for spraying absorption liquid is arranged inside the wet tower 02. A scraping assembly 4 and a driving assembly 5 are arranged at the bottom of the wet tower 02. The driving assembly 5 drives the scraping assembly 4 to scrape the sediment on the bottom surface of the wet tower 02. An exhaust pipe for exhausting gas is installed at the top end of the wet tower 02.

[0035] After the flue gas generated by the rotary kiln enters the dry tower 01, it moves towards the connecting pipe 03. The solid particles in the flue gas are intercepted and captured by the filter plate 101 when passing through the filter plate 101, and the content of solid particles in the flue gas decreases. Subsequently, the flue gas moves through the connecting pipe 03 into the wet tower 02. Under the action of the refrigerating ring plate 2, the temperature of the flue gas itself decreases, thereby reducing the influence of the high-temperature flue gas on the internal temperature of the wet tower 02. During the process of flowing from bottom to top, the flue gas contacts the absorption liquid sprayed by the spraying system in a countercurrent manner. The harmful substances in the flue gas become sediment after a chemical reaction with the absorption liquid. The sediment accumulates at the bottom of the wet tower 02 under the action of its own gravity. The driving assembly 5 drives the scraping assembly 4 to scrape the sediment out of the wet tower 02. The flue gas purified by both dry and wet methods is exhausted through the exhaust port 021.

[0036] Referring to Figure 2 and Figure 3, the filtering component 1 includes two filter plates 101. The two filter plates 101 are distributed inside the dry tower 01 along the flue gas flow direction. In this embodiment, the number of the filtering components 1 is two. The adjacent two filter plates 101 are staggeredly arranged inside the dry tower 01. The staggeredly arranged filter plates 101 enable the flue gas to pass through a more tortuous path when passing through the filter plates 101, extend the contact time between the flue gas and the filter plates 101, and improve the purification effect of the flue gas.

[0037] Refer to Figure 2 and Figure 3 , the filter plate 101 is slidably connected inside the dry tower 01. The opposite ends of the filter plate 101 are respectively fixedly connected with a guide block 102 and a slider 103. A guide groove 011 slidably matched with the guide block 102 is formed on the inner side wall at one end of the dry tower 01, and a chute 012 slidably matched with the slider 103 is formed on the inner side wall at the other end. The length directions of the chute 012 and the guide groove 011 are both perpendicular to the flue gas flow direction. The guide groove 011 guides the sliding of the filter plate 101 and ensures the stability of the sliding of the filter plate 101.

[0038] Refer to Figure 2 and Figure 3 , a straight tooth plate 6 is fixedly connected to the outer surface of each slider 103. The adjacent two straight tooth plates 6 are staggeredly arranged. A half gear 7 corresponding to the filtering component 1 one by one is rotatably connected to the inner side wall of the dry tower 01. The toothed end of the half gear 7 is meshed with the straight tooth plate 6. A spring 8 is arranged in the chute 012. One end of the spring 8 is fixedly connected to the inner side wall of the chute 012, and the other end is fixedly connected to the slider 103. The springs 8 in the adjacent chutes 012 are arranged oppositely. In the initial state, the end face of the filter plate 101 abuts against the inner side wall of the dry tower 01, and the spring 8 is in a natural state. When the straight tooth plate 6 moves towards the opposite end, the spring 8 is stretched, and a rotating component 9 is arranged on the outer side wall of the dry tower 01.

[0039] Refer to Figure 2 and Figure 3 , the rotating component 9 includes a first motor 91 fixedly installed on the outer side wall of the dry tower 01. The output shaft of the first motor 91 is coaxially and fixedly connected with one of the half gears 7. A pulley 92 is coaxially and fixedly connected to both of the two half gears 7, and a belt 93 is sleeved on the outer surfaces of the two pulleys 92 together.

[0040] The first motor 91 starts. The first motor 91 drives the two half-gears 7 to rotate synchronously through the transmission of the belt 93 and the pulley 92. When the toothed end 11 of the half-gear 7 meshes with the rack plate 12, the half-gear 7 drives the rack plate 12 to move towards the opposite rack plate 12. The spring 8 is stretched by the rack plate 12, and the rack plate 12 drives the filter plate 101 to move towards the opposite filter plate 101. When the toothed end of the half-gear 7 disengages from the rack plate 12, the tension on the spring 8 disappears, and the elastic force accumulated by the spring 8 is instantly released to drive the rack plate 12 to reset instantly. The rack plate 12 drives the filter plate 101 to impact on the inner wall of the dry tower 01. At the moment of impact, the solid particles blocked in the filter holes are shaken off the filter plate 101. This setting avoids the possibility of the filter plate 101 being blocked due to the accumulation of solid particles, and effectively ensures the filtering effect of the filter plate 101.

[0041] Refer to Figure 4 and Figure 5 As shown in FIGS. and, the spraying assembly 3 includes a liquid supply tank 31 fixedly installed on the outer wall of the wet tower 02. The liquid supply tank 31 stores the absorption liquid. A liquid supply pipe 32 is fixedly connected to the liquid supply tank 31. A liquid supply pump 33 is installed on the liquid supply pipe 32. The water inlet end of the liquid supply pipe 32 communicates with the inside of the liquid supply tank 31, and the water outlet end extends into the inside of the wet tower 02 and is communicated with a plurality of liquid outlet pipes 34. In this embodiment, the number of the liquid outlet pipes 34 is three. A plurality of atomizing nozzles 35 are installed on each liquid outlet pipe 34. The spraying direction of the atomizing nozzles 35 is set towards the inside of the wet tower 02. The plurality of atomizing nozzles 35 are evenly distributed at equal intervals in the length direction of the liquid outlet pipe 34. In this embodiment, the number of the atomizing nozzles 35 is five, and the water outlet range of the fifteen atomizing nozzles 35 covers the entire inside of the wet tower 02.

[0042] The liquid supply pump 33 starts to pump the absorption liquid in the liquid supply tank 31 into the liquid supply pipe 32. The absorption liquid flows through the liquid supply pipe 32 into the liquid outlet pipes 34 and finally sprays towards the flue gas as tiny water droplets. When the absorption liquid contacts the flue gas, a chemical reaction occurs. The harmful gases in the flue gas become precipitates and fall to the bottom of the wet tower 02. The flue gas purified by the absorption liquid continues to move upward and is discharged from the exhaust port 021. The setting of the atomizing nozzles 35 effectively increases the contact area between the absorption liquid and the flue gas, increases the probability of the harmful gases in the flue gas being reacted by the absorption liquid, and thus further improves the purification effect on the flue gas.

[0043] Refer to Figure 4 and Figure 5, the scraping assembly 4 includes a mounting plate 41 slidably connected to the bottom surface of the wet tower 02. A plurality of rotating shafts 10 are rotatably connected inside the mounting plate 41. One end of each rotating shaft 10 is fixedly installed with a scraper 42. The scale scraping part of the scraper 42 abuts against the bottom surface of the wet tower 02. The end of the rotating shaft 10 away from the scraper 42 is fixedly connected with a gear 11. A plurality of gears 11 are rotatably connected to the surface of the mounting plate 41 and are meshed with each other between adjacent gears 11. A rack plate 12 is meshed with the outermost gear 11. The rack plate 12 is fixedly installed on the side wall of the wet tower 02 and is parallel to the moving direction of the mounting plate 41. A driving assembly 5 for driving the mounting plate 41 to move along the length direction of the wet tower 02 is further provided inside the wet tower 02.

[0044] Referring to Figure 4 and Figure 5 , the driving assembly 5 includes a reciprocating lead screw 51 and a guide rod 52 respectively arranged at both ends inside the wet tower 02. The reciprocating lead screw 51 is rotatably connected inside the wet tower 02. The guide rod 52 is fixedly connected to the inside of the wet tower 02. One end of the mounting plate 41 is slidably connected to the reciprocating lead screw 51 through a ball slider 103, and the other end is slidably connected to the guide rod 52. A second motor 53 is fixedly installed on the outer side wall of the wet tower 02. The output shaft of the second motor 53 is coaxially fixedly connected to the reciprocating lead screw 51. The reciprocating lead screw 51, the gear 11 and the rack plate 12 are all coated with an anti-corrosion coating. In this embodiment, the anti-corrosion coating uses an organosilicon-modified epoxy urushiol paint. The anti-corrosion coating effectively isolates the influence of the sediment and the absorption liquid on the reciprocating lead screw 51, the gear 11 and the rack plate 12, and ensures the smooth operation of the scraping assembly 4 and the driving assembly 5.

[0045] Referring to Figure 5 , a slag discharge groove 13 is opened on the bottom surface of the wet tower 02. The slag discharge surface of the slag discharge groove 13 is inclined. A slag discharge pipe 131 communicated with the slag discharge groove 13 is installed on the wet tower 02. An electromagnetic valve 132 is installed on the slag discharge pipe 131.

[0046] The second motor 53 starts to drive the reciprocating lead screw 51 to rotate. During the rotation of the reciprocating lead screw 51, the mounting plate 41 reciprocates along the length direction of the bottom of the wet tower 02. During the movement of the mounting plate 41, the gear 11 engaged with the rack plate 12 rotates. At the same time, under the driving action of the meshing of multiple gears 11 with each other, multiple gears 11 rotate synchronously and drive the rotating shaft 10 to rotate. The rotating shaft 10 causes the scraper 42 to rotate to scrape the sediment at the bottom of the wet tower 02. The rotating scraper 42 generates multiple forces on the sediment attached to the bottom of the wet tower 02, increasing the probability of the sediment being removed by the scraper 42. The sediment scraped by the scraper 42 is pushed by the scraper 42 into the slag discharge trough 13. The sediment moves in the inclined slag discharge trough 13 into the slag discharge pipe 131. When the sediment in the slag discharge pipe 131 accumulates to a certain height, the solenoid valve 132 is started to discharge the sediment. Such a setting realizes the automatic scraping of the sediment at the bottom of the wet tower 02, reduces the sediment content at the bottom of the wet tower 02, thereby reducing the possibility of the sediment decomposing back into harmful gases, and further improving the purification effect of the flue gas.

[0047] The implementation principle of a rotary kiln flue gas purification device according to an embodiment of the present application is as follows: The flue gas generated by the rotary kiln enters the dry tower 01 and then moves towards the connecting pipe 03. The solid particles in the flue gas are intercepted and captured by the filter plate 101 when passing through the filter plate 101, and the content of solid particles in the flue gas decreases. Subsequently, the flue gas moves through the connecting pipe 03 into the wet tower 02. During the process of flowing upward, the flue gas contacts the absorption liquid sprayed by the spray system in a countercurrent manner. The harmful substances in the flue gas become sediment after a chemical reaction with the absorption liquid, and the sediment accumulates at the bottom of the wet tower 02 under the action of its own gravity;

[0048] The second motor 53 starts to drive the reciprocating lead screw 51 to rotate. During the rotation of the reciprocating lead screw 51, the mounting plate 41 reciprocates along the length direction of the bottom of the wet tower 02. During the movement of the mounting plate 41, the gear 11 engaged with the rack plate 12 rotates. At the same time, under the driving action of the meshing of multiple gears 11 with each other, multiple gears 11 rotate synchronously and drive the rotating shaft 10 to rotate. The rotating shaft 10 causes the scraper 42 to rotate to scrape the sediment at the bottom of the wet tower 02. The rotating scraper 42 generates multiple forces on the sediment attached to the bottom of the wet tower 02, increasing the probability of the sediment being removed by the scraper 42. The sediment scraped by the scraper 42 is pushed by the scraper 42 into the slag discharge trough 13. The sediment moves in the inclined slag discharge trough 13 into the slag discharge pipe 131. When the sediment in the slag discharge pipe 131 accumulates to a certain height, the solenoid valve 132 is started to discharge the sediment. Such a setting realizes the automatic scraping of the sediment at the bottom of the wet tower 02, reduces the sediment content at the bottom of the wet tower 02, thereby reducing the possibility of the sediment decomposing back into harmful gases, and further improving the purification effect of the flue gas.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A rotary kiln flue gas purification device, comprising a dry tower (01) and a wet tower (02), wherein the dry tower (01) and the wet tower (02) are communicated through a connecting pipe (03), and a plurality of groups of filtering components (1) are arranged in the dry tower (01), and it is characterized in that, A scraping component (4) is provided at the bottom of the wet tower (02). The scraping component (4) includes a mounting plate (41) slidably connected to the bottom of the wet tower (02). A plurality of scraping plates (42) are provided on the mounting plate (41). The scraping surfaces of the scraping plates (42) abut against the bottom surface of the wet tower (02). A driving component (5) is provided inside the wet tower (02). The driving component (5) drives the mounting plate (41) to reciprocate along the bottom surface of the wet tower (02). A slag discharge groove (13) is formed in the bottom surface of the wet tower (02). The slag discharge surface of the slag discharge groove (13) is inclined. A slag discharge pipe (131) communicating with the slag discharge groove (13) is provided on the wet tower (02). An electromagnetic valve (132) is provided on the slag discharge pipe (131).

2. The flue gas purification equipment for a rotary kiln according to claim 1, characterized in that, The driving component (5) includes a reciprocating lead screw (51) and a guide rod (52) provided at both ends of the wet tower (02). The reciprocating lead screw (51) is rotatably connected inside the wet tower (02). One end of the mounting plate (41) is slidably connected to the reciprocating lead screw (51) through a ball slider (103), and the other end is slidably connected to the guide rod (52). A second motor (53) for driving the reciprocating lead screw (51) to rotate is provided on the outer side wall of the wet tower (02).

3. The rotary kiln flue gas purification equipment according to claim 2, characterized in that, A rotating shaft (10) corresponding to each of the plurality of scraping plates (42) is rotatably connected inside the mounting plate (41). One end of the rotating shaft (10) is fixedly connected to the scraping plate (42), and the other end is fixedly connected to a gear (11). The plurality of gears (11) are rotatably connected to the surface of the mounting plate (41). A rack plate (12) is provided on the inner side wall of the wet tower (02). The rack plate (12) is meshed with the gear (11) close to the rack plate (12).

4. A rotary kiln flue gas purification device according to claim 1, characterized in that, A spraying component (3) is provided inside the wet tower (02). The spraying component (3) includes a liquid supply tank (31) provided on the outer side wall of the wet tower (02). A liquid supply pipe (32) is provided on the liquid supply tank (31). A liquid supply pump (33) is provided on the liquid supply pipe (32). The liquid outlet end of the liquid supply pipe (32) extends into the wet tower (02) and is connected to a plurality of liquid outlet pipes (34). A plurality of atomizing nozzles (35) are provided on the liquid outlet pipes (34).

5. A rotary kiln flue gas purification device according to claim 1, characterized in that, The filtering component (1) includes two filter plates (101). The two adjacent filter plates (101) are staggered inside the dry tower (01).

6. The flue gas purification equipment for a rotary kiln according to claim 5, characterized in that The filter plate (101) is slidably connected inside the dry tower (01). A slider (103) is provided on the filter plate (101). A chute (012) that slidably cooperates with the slider (103) is formed on the inner sidewall of the dry tower (01). A straight tooth plate (6) is provided on the outer surface of the slider (103). Two adjacent straight tooth plates (6) are arranged staggeredly. A half gear (7) corresponding to the filter assembly (1) one by one is rotatably connected to the inner sidewall of the dry tower (01). The toothed end of the half gear (7) is meshed with the straight tooth plate (6). A spring (8) is arranged in the chute (012). One end of the spring (8) is connected to the inner sidewall of the chute (012), and the other end is connected to the slider (103). In the natural state of the spring (8), the end face of the filter plate (101) abuts against the inner sidewall of the dry tower (01). A rotating assembly (9) for driving the rotation of a plurality of the half gears (7) is provided on the outer sidewall of the dry tower (01).

7. The flue gas purification equipment for a rotary kiln according to claim 1, characterized in that, A plurality of refrigeration ring pieces (2) are sleeved on the outer sidewall of the connecting pipe (03).

8. The rotary kiln flue gas purification equipment according to claim 3, characterized in that, An anticorrosive coating is applied to the reciprocating lead screw (51), the gear (11), and the rack plate (12).

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