High-temperature waste gas treatment assembly for high-ash-content rotary kiln

Abstract

The invention discloses a high-temperature waste gas treatment assembly for a high-ash-content rotary kiln, and belongs to the technical field of rotary kiln waste gas pollution treatment. The high-temperature waste gas treatment assembly comprises a feeding pipe mounted on the rotary kiln and a treatment assembly matched with the feeding pipe and communicated with the tail end of the rotary kiln; high-temperature waste gas exhausted by the rotary kiln is primarily treated, most dust particles in the waste gas are removed, the waste gas carrying small particles is guided into a filtering structure, and in secondary filtering treatment, two sets of filtering cavities are selectively opened and closed through a rotatable plugging piece, so that the dust particles in the waste gas are removed. Waste gas is introduced into the filtering cavities in the open state through the gas supply part to be filtered through the filtering filler and then dispersed through the communicated gas holes to be introduced into the feeding pipe to preheat materials, and after the filtering filler reaches the service life, the plugging part is rotated, so that the working state of the filtering filler in the two filtering cavities can be replaced. And the used filter filler can be treated without shutdown.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas pollution treatment of rotary kilns, and more specifically to a high-temperature waste gas treatment component for high-ash rotary kilns. Background Art

[0002] A rotary kiln is a thermal equipment for calcining, roasting or drying granular and powdered materials. The rotary kiln body is a steel cylinder with a refractory lining. The furnace body is supported on several pairs of rollers and has an inclination of 3% to 6%. The furnace body is driven by an electric motor to rotate slowly through gears. Materials are added from the higher tail end and discharged from the lower furnace head end. The roasting rotary kiln produces a large amount of high-temperature exhaust gas during operation. If the exhaust gas is discharged without treatment, it is easy to have a negative impact on the environment.

[0003] After searching, the patent number CN113117426B discloses "A Rotary Kiln Waste Gas Treatment Equipment", which is equipped with an air inlet pipe to effectively collect waste gas during use. When the waste gas enters the air inlet pipe, it enters the first air pipe. Through the coordinated use of the air holes, the waste gas is evenly filled in the second air pipe. After the fan is set, the waste gas is filtered through activated carbon and extracted by the fan installed on the top.

[0004] Although this patent can achieve uniform flow of exhaust gas through activated carbon, the pores for diverting exhaust gas and the activated carbon for filtering exhaust gas are fixedly installed in the second air pipe. The exhaust gas is first dispersed through the pores and then filtered by the activated carbon. The pores are prone to adhere to a large amount of solid impurities during long-term use, resulting in a reduction in the pore diameter. Especially for rotary kilns with high ash content, a large amount of dust particles are more likely to clog the pores and affect the gas circulation effect. When the activated carbon is saturated with adsorption, it is necessary to take advantage of the idle time of the rotary kiln or the shutdown of the rotary kiln to replace it, which is inconvenient for regular cleaning. In addition, the treated gas goes directly to the outside, and the waste heat of the gas is not effectively utilized.

[0005] Therefore, we propose a high-temperature exhaust gas treatment component for a high-ash rotary kiln to address the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the existing practical problems. Compared with the prior art, a high-temperature exhaust gas treatment component for a high-ash rotary kiln is provided to improve the exhaust gas treatment structure of the rotary kiln in the prior art. The treatment component in this scheme includes a cyclone separator and a filtering structure. The cyclone separator is used to preliminarily treat the high-temperature exhaust gas discharged from the rotary kiln to remove most of the dust particles in the exhaust gas. The exhaust gas carrying small particles is introduced into the filtering structure. In the secondary filtration treatment, the two groups of filter chambers are selectively opened and closed by a rotatable sealing member. The exhaust gas is passed from the air supply member into the open filter chamber and filtered by the filter filler, and then dispersed by the conductive air holes to the feed pipe to preheat the material. After the filter filler reaches the service life, the sealing member is rotated to replace the working state of the filter filler in the two groups of filter chambers, and the used filter filler can be processed without stopping the machine.

[0007] The object of the present invention can be achieved through the following technical solutions: A high-temperature exhaust gas treatment component for a high-ash rotary kiln, comprising a feed pipe installed on the rotary kiln and a treatment component matched with the feed pipe and connected to the rear end of the rotary kiln, the treatment component comprising a cyclone separator connected to the rear end of the rotary kiln and a filter structure sleeved and installed on the outside of the feed pipe and connected to the feed pipe, the filter structure and the air outlet of the cyclone separator are connected through a hose; The filtering structure comprises a fixed frame fixedly mounted on the feed end of the rotary kiln, an outer ring sleeve which is sleeved on the outside of the feed pipe and has an upper end open is fixedly mounted on the fixed frame, a plurality of partitions extending upward are annularly fixed on the inner bottom wall of the outer ring sleeve, the plurality of partitions divide the annular cavity formed between the outer ring sleeve and the feed pipe into a plurality of filter cavities, each filter cavity is embedded with a filter filler, and air holes communicating with the filter cavity are opened on the end wall of the feed pipe; The outer end wall of the outer ring sleeve is provided with a plurality of air inlet cavities corresponding to and connected with two adjacent filter cavities one by one. A sealing member for selectively opening and closing two adjacent filter cavities is slidably installed at each air inlet cavity. The bottom end wall of the outer ring sleeve is rotatably sleeved with a rotating sleeve connected to the bottom ends of the plurality of sealing members. The top end wall of the fixed frame is rotatably installed with an air supply member movably sleeved on the outside of the outer ring sleeve and connected with the air inlet cavity and a hose.

[0008] Furthermore, a vertical rod is fixedly inserted inside the feed pipe, and a spiral guide piece is fixedly sleeved on the vertical rod. Adding a section of spiral guide piece in the feed pipe is beneficial to conveying the introduced material downward along the spiral direction of the spiral guide piece, thereby extending the conveying path of the material in the feed pipe. Therefore, when the gas with waste heat treated by the filtering structure enters the feed pipe, it can preheat the material well.

[0009] Furthermore, the sealing member includes an outer sealing plate which is slidably installed between the upper and lower inner walls of the air inlet cavity and initially located at the outer end of one of the filter cavities; an upper sealing plate located near the top opening of the filter cavity is fixed to the inner top of one side of the outer sealing plate; an inner sealing plate extending to the inside of another filter cavity and movably connected to the outer wall of the feed pipe is fixed to the inner end of the upper sealing plate away from the outer sealing plate; the inner sealing plate is movably connected to the inner wall of the bottom end of the outer ring sleeve.

[0010] Furthermore, the left and right ends of the outer sealing plate are provided with convex strips, and the left and right opposite inner walls of the air inlet cavity are provided with engaging grooves matched with the convex strips.

[0011] Furthermore, the outer sealing plate on the blocking member and the inner sealing plate on the adjacent blocking member are distributed inside and outside, and the multiple inner sealing plates are fixedly connected end to end with the adjacent upper sealing plates, and the adjacent outer sealing plates are connected with the inner end wall of the upper sealing plate.

[0012] Furthermore, a movable gap for the inner sealing plate to pass through is reserved between the inner ends of the plurality of partitions and the outer wall of the feed pipe.

[0013] Furthermore, the rotating sleeve is rotatably sleeved on the outer wall of the bottom of the outer ring sleeve and fixedly connected to the outer end walls of multiple outer sealing plates. The outer end of the rotating sleeve is also externally connected to a shifting rod.

[0014] Furthermore, a supporting ring sleeved on the outside of the rotating sleeve is fixedly mounted on the bottom end wall of the fixing frame, and a slot for the shifting rod to reciprocate along its axis is formed on the supporting ring.

[0015] Furthermore, the air supply assembly includes a sealing rotary sleeve rotatably mounted between a supporting ring and a top wall of a fixing frame, the inner wall of the sealing rotary sleeve is movably connected with the outer end walls of a plurality of outer sealing plates, a plurality of ventilation pipes evenly distributed and corresponding to the positions of the filter chambers are embedded and mounted on the sealing rotary sleeve, a ventilation sleeve connected to the top ends of the plurality of ventilation pipes is fixed to the top end of the sealing rotary sleeve, and a ventilation slot connected to the filter chamber is provided at the inner end of the ventilation pipe; Furthermore, the number of the ventilation pipes is consistent with the number of the air inlet cavities, an air inlet pipe connected to the hose is fixed on the ventilation sleeve, and the ventilation sleeve is externally connected to a second lever.

[0016] Compared with the prior art, the advantages of the present invention are: (1) This scheme is to improve the waste gas treatment structure of the rotary kiln in the prior art. A cyclone separator and a filter structure are added between the rear end of the rotary kiln and the feed pipe. The cyclone separator is used to preliminarily treat the high-temperature waste gas discharged from the rotary kiln and remove most of the dust particles in the waste gas. The waste gas carrying small particles is introduced into the filter structure for secondary filtration treatment. The two groups of filter chambers are opened and closed by a rotatable sealing member. The waste gas is passed from the air supply member into the filter chamber in an open state and filtered by the filter filler. The waste gas is then dispersed into the feed pipe through the conductive air holes and mixed with the material transmitted downward. The waste gas is recycled to preheat the material. After the filter filler reaches the set service life, the sealing member is rotated to replace the working state of the filter filler in the two groups of filter chambers. The used filter filler can be treated separately without stopping the machine.

[0017] (2) This scheme also sets the filter cavity and the filter filler into a fan-shaped structure with a certain height. A plurality of air holes are opened on the end wall of the feed pipe along its vertical direction. The exhaust gas after the initial treatment passes through the vent pipe on the air supply part from the vertical direction to the filter cavity, thereby expanding the exhaust gas filtration surface. The exhaust gas is introduced into the feed pipe through the air holes after the two filtration processes. The air holes play a role in air flow dispersion and are not prone to dust clogging. In addition, a spiral guide piece is added inside the feed pipe, which is conducive to conveying the introduced material downward along the spiral direction of the spiral guide piece, thereby extending the material conveying path in the feed pipe. When the gas treated by the filter filler and carrying residual heat is dispersed into the feed pipe from the plurality of air holes, the gas is fully mixed with the material in the conveying process, which has a good preheating effect on the material and realizes the utilization of residual heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the external structure of the present invention; Figure 2 It is a structural schematic diagram of the filtering structure of the present invention; Figure 3 It is a schematic structural diagram of the present invention when the air supply member is detached from the outer ring sleeve; Figure 4 It is a structural schematic diagram of the junction of the outer ring sleeve and the partition plate of the present invention; Figure 5 It is a schematic structural diagram of the present invention when one group of filter fillers is pulled upward from the filter cavity; Figure 6 It is a structural schematic diagram of the joint of the air intake pipe, the outer ring sleeve and the blocking member of the present invention; Figure 7 A partial cross-sectional view of the interior of the air intake pipe of the present invention; Figure 8 It is a schematic structural diagram of the outer ring sleeve and the plugging member of the present invention when they are detached; Fig. 9 It is a schematic structural diagram of the present invention when the blocking member is rotated toward one side to expose two adjacent filter cavities; Fig.10 A partial internal cross-sectional view of the filter structure of the present invention in an initial state; Fig.11 It is a partial cross-sectional view of the filtering structure of the present invention after the blocking member and the air supply member are rotated in opposite directions.

[0019] Description of the numbers in the figure: 1. Rotary kiln; 2. Feed pipe; 201. Air hole; 202. Spiral guide plate; 3. Cyclone separator; 4. Fixed frame; 5. Outer ring sleeve; 501. Fitting groove; 502. Mounting cavity; 6. Partition plate; 7. Rotating sleeve; 701. Lever 1; 8. Outer sealing plate; 9. Inner sealing plate; 10. Upper sealing plate; 11. Supporting ring; 12. Filter filler; 13. Sealing rotary sleeve; 14. Ventilation pipe; 141. Ventilation notch; 15. Ventilation sleeve; 151. Lever 2; 16. Inlet pipe. DETAILED DESCRIPTION

[0020] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0021] Example 1: The present invention discloses a high-temperature exhaust gas treatment component for a high-ash rotary kiln, see Figure 1-Figure 2 , including a feed pipe 2 installed on the rotary kiln 1 and a processing component matched with the feed pipe 2 and connected to the rear end of the rotary kiln 1; The processing assembly includes a cyclone separator 3 connected to the rear end of the rotary kiln 1 through an exhaust pipe and a filtering structure sleeved and installed on the outside of the feed pipe 2 and connected to the inside thereof. The filtering structure is connected to the air outlet of the cyclone separator 3 through a hose. The cyclone separator 3 is used to perform preliminary processing on the high-temperature exhaust gas discharged from the rotary kiln 1, and to process most of the dust particles in the exhaust gas. The exhaust gas carrying small particles is discharged into the filtering structure through the hose for filtering processing, and the processed gas is reintroduced into the feed pipe 2; Among them, see Figure 3-Figure 6The filtering structure includes a fixing frame 4 fixedly mounted on the feed end of the rotary kiln 1, an outer ring sleeve 5 which is sleeved on the outside of the feed pipe 2 and has an upper end open is fixedly mounted on the fixing frame 4, a plurality of partitions 6 extending upward are annularly fixed on the inner bottom wall of the outer ring sleeve 5, and the plurality of partitions 6 divide the annular cavity formed between the outer ring sleeve 5 and the feed pipe 2 into a plurality of filter cavities, the filter cavities are fan-shaped, and a filter filler 12 matching its structure is embedded in each filter cavity, and an installation cavity 502 for embedding and installing the bottom of the filter filler 12 is opened on the bottom end wall of the outer ring sleeve 5; The filter filler 12 is embedded in the filter cavity from top to bottom, and a sealing cover is provided on the top of the filter filler 12. When in use, it is sealed at the opening at the top of the filter cavity. The end wall of the feed pipe 2 is provided with air holes 201 connected to the filter cavity, and the outer end wall of the outer ring sleeve 5 is provided with multiple air inlet cavities corresponding to two adjacent filter cavities. The exhaust gas is introduced into the filter cavity through the air inlet cavity and filtered by the filter filler 12. The treated gas is evenly diffused into the feed pipe 2 through the multiple air holes 201, mixed with the material transmitted downward, and preheated The material, the exhaust gas is filtered twice by the filter filler 12 and then passed into the interior of the feed pipe 2 through the air holes 201, and the air holes 201 are not easily clogged by dust.

[0022] See also Figure 7 A vertical rod is fixedly inserted inside the feed pipe 2, and a spiral guide piece 202 is fixedly sleeved on the vertical rod. Adding a section of spiral guide piece 202 in the feed pipe 2 is beneficial to conveying the introduced material downward along the spiral direction of the spiral guide piece 202, thereby extending the conveying path of the material in the feed pipe 2. Therefore, when the gas with waste heat treated by the filtering structure enters the feed pipe 2, it can preheat the material well.

[0023] See also Figure 6 , Figure 8-Figure 11 A plugging piece for selectively opening and closing two adjacent filter cavities is slidably installed at each air inlet cavity. A rotating sleeve 7 connected to the bottom ends of multiple plugging pieces is rotatably sleeved on the bottom end wall of the outer ring sleeve 5. Multiple groups of plugging pieces are provided, and the number of the plugging pieces is generally the same as the number of the filter cavities. The plugging piece is used to selectively close one of the two adjacent filter cavities, that is, one of the filter cavities is in an open state and the other is in a closed state. An air supply part movably sleeved on the outside of the outer ring sleeve 5 and connected to the air inlet cavity and the hose is rotatably installed on the top wall of the fixed frame 4. The exhaust gas after initial filtration by the cyclone separator 3 is introduced into the air supply part through the hose, and then is diverted by multiple air inlet cavities to the internal filter cavity in the open state, and is filtered by the filter filler 12 there. When the filter filler 12 in the filter cavity initially in the open state reaches the saturation index after being used for a period of time, the rotating sleeve 7 is rotated to drive multiple groups of blocking parts to rotate, and the filter cavity that has reached the saturation index is blocked, and another group of filter fillers 12 is opened, and then the air supply part is connected to the filter cavity with the opened filter filler 12, so that the two groups of filter fillers 12 can be used alternately, and then the saturated filter filler 12 is replaced.

[0024] Embodiment 2: Based on Embodiment 1, this embodiment describes in detail the specific structures of the blocking member and the air supply member, as follows: See also Figure 6 , Figure 8-Figure 11 The sealing member includes an outer sealing plate 8 which is slidably mounted between the upper and lower inner walls of the air inlet cavity and initially located at the outer end of one of the filter cavities. An upper sealing plate 10 located near the top opening of the filter cavity is fixed to the inner top of one side of the outer sealing plate 8. An inner sealing plate 9 extending to the inside of another filter cavity and movably connected to the outer wall of the feed pipe 2 is fixed to the inner end of the upper sealing plate 10 away from the outer sealing plate 8. The inner sealing plate 9 is movably connected to the inner wall of the bottom end of the outer ring sleeve 5. Both left and right ends of the outer sealing plate 8 are provided with convex strips, and both left and right opposite inner walls of the air inlet cavity are provided with engaging grooves 501 adapted to the convex strips. The outer sealing plate 8 on the plugging member and the inner sealing plate 9 on the adjacent plugging member are distributed inside and outside, and the multiple inner sealing plates 9 are fixedly connected to the adjacent upper sealing plate 10 end to end, and the adjacent outer sealing plates 8 are connected to the inner end wall of the upper sealing plate 10, and a movable gap for the inner sealing plates 9 to pass through is reserved between the inner ends of the multiple partitions 6 and the outer wall of the feed pipe 2; In the initial state, one end of a plurality of staggered outer sealing plates 8 is embedded one by one in the fitting groove 501 of the air inlet cavity, and the outer sealing plate 8 blocks the outside of one of the filter cavities corresponding to the same air inlet cavity, and the left and right sides of the outer sealing plate 8 are located outside the partition plates 6 on both sides of the filter cavity, and the inner sealing plate 9 on a sealing member connected thereto is movably docked at the outer end wall of the feed pipe 2 on its inner side, and the inside and outside of the filter cavity at this location are blocked, and the filter filler 12 in the filter cavity at this location is in a blocked state, while the top end of another adjacent filter cavity is closed by the upper sealing plate 10, and the outer side is connected to the air inlet cavity, and the inner side is connected to the air hole 201, and the exhaust gas introduced by the air supply member is introduced into the conductive filter cavity through the air inlet cavity for filtering treatment; The rotating sleeve 7 is rotatably sleeved on the outer wall of the bottom of the outer ring sleeve 5 and fixedly connected to the outer end walls of multiple outer sealing plates 8. The outer end of the rotating sleeve 7 is also externally connected to a lever 701. The bottom end wall of the fixed frame 4 is fixedly installed with a supporting ring 11 sleeved on the outside of the rotating sleeve 7. The supporting ring 11 is provided with a groove for the lever 701 to reciprocate along its axis. Multiple outer sealing plates 8 are connected together by the rotating sleeve 7, so that multiple blocking members can be rotated to a certain angle toward the same side; The outer sealing plate 8 and the inner sealing plate 9 at the filter chamber that was originally in an idle state rotate to the filter chamber that is in a predetermined period of use to seal it, and the upper sealing plate 10 that was originally located at the top of the filter chamber in use rotates to the top of the adjacent idle filter chamber to seal the filter chamber, and the filter chamber corresponding to the unused filter filler 12 next to it is opened to complete the alternating use of the filter filler 12. At this time, the technician can extract the adsorption saturated filter filler 12 upward from the filter chamber opening for replacement. In this process, the rotary kiln 1 does not need to be stopped for use, and the normal operation of the rotary kiln 1 is not affected. See also Figure 2 , Figure 3 The air supply assembly includes a sealing rotary sleeve 13 rotatably installed between a supporting ring 11 and the top wall of a fixing frame 4. The inner wall of the sealing rotary sleeve 13 is movably connected with the outer end walls of multiple outer sealing plates 8. A plurality of ventilation pipes 14 evenly distributed and corresponding to the positions of the filter chambers are embedded and installed on the sealing rotary sleeve 13. A ventilation sleeve 15 connected to the tops of the multiple ventilation pipes 14 is fixed on the top of the sealing rotary sleeve 13. A ventilation slot 141 connected to the filter chamber is provided at the inner end of the ventilation pipe 14. The number of the ventilation pipes 14 is consistent with the number of the air inlet chambers. An air inlet pipe 16 connected to the hose is fixed on the ventilation sleeve 15, and the ventilation sleeve 15 is externally connected to a lever 151.

[0025] See also Fig.10 , Fig.11 A plurality of ventilation pipes 14 having the same number as the sealing members are added to the outer end wall of the sealing rotary sleeve 13. When working, the plurality of ventilation pipes 14 on the sealing rotary sleeve 13 are rotated to the plurality of opened filter chambers, and the two are connected. The exhaust gas initially filtered by the cyclone separator 3 is diverted to the plurality of filter chambers for filtering through the ventilation slots 141 on the plurality of ventilation pipes 14. When the used filter filler 12 is replaced within the set use time, after the sealing member rotates a certain angle with the rotating sleeve 7, the plurality of ventilation pipes 14 are synchronously rotated a certain angle in the opposite direction with the sealing rotary sleeve 13, so that the plurality of ventilation pipes 14 are connected one by one with the plurality of newly opened filter chambers.

[0026] When the filter filler 12 is replaced for the second time, the rotating sleeve 7 only needs to be retracted by a certain angle, and the outer sealing plate 8 is retracted from one filter cavity at the air inlet cavity to the outside of another filter cavity, so that two groups of filter fillers 12 can be used alternately.

[0027] The present invention improves the rotary kiln waste gas treatment equipment in the prior art, and adds a cyclone separator 3 and a filtering structure between the outer end wall of the rotary kiln 1 and the feed pipe 2. The cyclone separator 3 is used to perform preliminary treatment on the high-temperature waste gas discharged from the rotary kiln 1, and to remove most of the dust particles in the waste gas. The waste gas carrying small particles is introduced into the filtering structure for secondary filtering treatment. The filtering structure consists of an outer ring sleeve 5 with multiple groups of filter cavities, a sealing member for selectively opening and closing one of the filter cavities in each group, and an air supply member for passing the exhaust gas to the filter cavity in a conducting state. A filter filler 12 is embedded in each filter cavity, and the two groups of filter cavities are opened and closed by a rotatable sealing member. The exhaust gas is passed from the air supply member into the filter cavity in the open state and filtered by the filter filler 12, and then dispersed into the feed pipe 2 through the conducting air holes 201 to mix with the material conveyed downward, and the exhaust gas is recovered to preheat the material. After the filter filler 12 reaches the set service life, the sealing member is rotated to change the working state of the filter fillers 12 in the two groups of filter cavities, and the used filter fillers 12 can be replaced separately without stopping the machine.

[0028] The above are only preferred specific implementation modes of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A high-temperature exhaust gas treatment component for a high-ash rotary kiln, comprising a feed pipe (2) mounted on the rotary kiln (1) and a treatment component matched with the feed pipe (2) and connected to the rear end of the rotary kiln (1), characterized in that: The processing assembly comprises a cyclone separator (3) which is connected to each other and a filtering structure which is sleeved and mounted on the outside of the feed pipe (2) and is in communication with the feed pipe (2); The filtering structure comprises a fixing frame (4) fixedly mounted on the feed end of the rotary kiln (1), an outer ring sleeve (5) which is sleeved on the outside of the feed pipe (2) and has an open upper end fixedly mounted on the fixing frame (4), a plurality of partitions (6) extending upward are annularly fixed on the inner bottom wall of the outer ring sleeve (5), the plurality of partitions (6) divide the annular cavity formed between the outer ring sleeve (5) and the feed pipe (2) into a plurality of filtering cavities, each of the filtering cavities having a filtering filler (12) embedded therein, and an air hole (201) which is in communication with the filtering cavity is provided on the end wall of the feed pipe (2); The outer end wall of the outer ring sleeve (5) is provided with a plurality of air inlet cavities corresponding to each other and connected to two adjacent filter cavities. A sealing member for selectively opening and closing two adjacent filter cavities is slidably mounted at each air inlet cavity. A rotating sleeve (7) connected to the bottom ends of the plurality of sealing members is rotatably mounted on the bottom end wall of the outer ring sleeve (5). An air supply member movably mounted on the top end wall of the fixed frame (4) and connected to the air inlet cavity and the hose is rotatably mounted.

2. A high-temperature exhaust gas treatment component for a high-ash rotary kiln according to claim 1, characterized in that: A vertical rod is fixedly inserted into the interior of the feed pipe (2), and a spiral material guide piece (202) is fixedly sleeved on the vertical rod.

3. The high-temperature exhaust gas treatment component for a high-ash rotary kiln according to claim 1, characterized in that: The sealing member comprises an outer sealing plate (8) which is slidably mounted between the upper and lower inner walls of the air inlet cavity and initially located at the outer end of one of the filter cavities; an upper sealing plate (10) located near the top opening of the filter cavity is fixed to the inner top of one side of the outer sealing plate (8); an inner sealing plate (9) which extends to the inside of the other filter cavity and is movably connected to the outer wall of the feed pipe (2) is fixed to the inner end of the upper sealing plate (10) away from the outer sealing plate (8); the inner sealing plate (9) is movably connected to the inner wall of the bottom end of the outer ring sleeve (5).

4. A high-temperature exhaust gas treatment assembly for a high-ash rotary kiln according to claim 3, characterized in that: The outer sealing plate (8) is provided with convex strips at both left and right ends, and the left and right opposite inner walls of the air inlet cavity are provided with engaging grooves (501) matching the convex strips.

5. A high-temperature exhaust gas treatment assembly for a high-ash rotary kiln according to claim 4, characterized in that: The outer sealing plate (8) on the blocking member and the inner sealing plate (9) on the adjacent blocking member are distributed inside and outside, and the plurality of inner sealing plates (9) and the adjacent upper sealing plates (10) are fixedly connected end to end, and the adjacent outer sealing plates (8) are connected to the inner end wall of the upper sealing plate (10).

6. A high-temperature exhaust gas treatment assembly for a high-ash rotary kiln according to claim 5, characterized in that: A movable gap is reserved between the inner ends of the plurality of partitions (6) and the outer wall of the feed pipe (2) for the inner sealing plate (9) to pass through.

7. A high-temperature exhaust gas treatment assembly for a high-ash rotary kiln according to claim 5, characterized in that: The rotating sleeve (7) is rotatably sleeved on the outer wall of the bottom of the outer ring sleeve (5) and is fixedly connected to the outer end walls of a plurality of outer sealing plates (8). The outer end of the rotating sleeve (7) is also externally connected to a lever 1 (701).

8. A high-temperature exhaust gas treatment assembly for a high-ash rotary kiln according to claim 7, characterized in that: The bottom end wall of the fixed frame (4) is provided with a supporting ring (11) sleeved on the outside of the rotating sleeve (7), and a slot for the shifting rod (701) to reciprocate left and right is provided on the supporting ring (11).

9. A high-temperature exhaust gas treatment assembly for a high-ash rotary kiln according to claim 8, characterized in that: The air supply assembly comprises a sealing rotary sleeve (13) rotatably mounted between a supporting ring (11) and a top wall of a fixing frame (4); a plurality of ventilation pipes (14) evenly distributed and corresponding to the positions of the filter chambers are embedded and mounted on the sealing rotary sleeve (13); and a ventilation sleeve (15) fixed to the top ends of the plurality of ventilation pipes (14); and a ventilation slot (141) communicating with the filter chamber is provided at the inner end of the ventilation pipe (14).

10. A high temperature exhaust gas treatment assembly for a high ash content rotary kiln according to claim 9, characterized in that: The number of the ventilation pipes (14) is consistent with the number of the air intake cavities; an air intake pipe (16) connected to the hose is fixed on the ventilation sleeve (15); and the ventilation sleeve (15) is externally connected to a second lever (151).

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