High temperature resistant rotary dust collector

Abstract

This invention proposes a high-temperature resistant rotary dust collector, comprising a horizontally placed cylindrical hollow shell, within which multiple sintered mesh plates perpendicular to its central axis are fixed; gaps are left between adjacent sintered mesh plates and between the end mesh plates and the shell end face; two adjacent sintered mesh plates form a group, with the gap between them forming a tail gas filtration chamber; the upper end of the shell has a corresponding connected air inlet, and the lower end has a ash discharge port; the gaps between adjacent filtration units and between the end mesh plates and the shell end face form a tail gas collection chamber, with an exhaust port below it; a hollow shaft that can rotate relative to the sintered mesh plates is provided on the central axis of the shell, and a cleaning unit is fixed on the hollow shaft in each tail gas filtration chamber for cleaning the mesh plates on both sides; a backflush pipe is fixed on the hollow shaft in each tail gas collection chamber, connected to external high-pressure gas to blow air onto the mesh plates; the working cycle of the backflush pipe is adjusted according to the system pressure difference, the cleaning brush bristles are detachable, the sintered mesh plates are spliced ​​in sections, and the gas buffer chamber cooperates with the solenoid valve to sequentially open and close to supply gas.

Description

Technical Field

[0001] This invention relates to dust removal equipment, and in particular to a high-temperature resistant rotary dust collector. Background Technology

[0002] In existing technologies, high-temperature dust collectors mainly fall into three categories: baghouse dust collectors, ceramic filters, and metal baghouse dust collectors, all of which are filtration-type dust collection equipment. The cleaning methods of these dust collectors primarily involve gas backflushing and mechanical vibration, and they share the following common problems in practical applications: First, the dust removal operation is not continuous; both pulse backflushing and mechanical vibration are intermittent operations. During the interval between two dust removal operations, dust continues to accumulate on the surface of the filter element, which can easily lead to an increase in local filtration resistance and affect the stability of dust removal efficiency. Second, the dust removal operation is uneven; the pulse jet airflow is unevenly distributed in the filter chamber, resulting in significant differences in the dust removal effect between the upper and lower parts of the filter element, and between the near and far ends. Some areas have serious dust residue, which can easily lead to local blockages during long-term operation. Third, the dust removal process generates secondary dust; dust that falls off during high-pressure backflushing or shaking is easily re-adsorbed by nearby filter elements under high wind speed, reducing the cleanliness of the dust removal process. Fourth, it is difficult to dynamically balance the energy consumption and effect of dust removal; most existing dust removal systems adopt fixed timing control, which cannot dynamically adjust the dust removal intensity and frequency according to the actual pressure difference of the filter element. This not only wastes energy such as compressed air, but may also cause the system resistance to continue to rise due to insufficient dust removal. In addition, among the dust collectors mentioned above, bag filters also have the problem of being unable to withstand high temperatures. When the flue gas temperature exceeds the allowable operating temperature of the filter bag, the filter bag fibers will undergo thermal shrinkage, resulting in a reduction in filtration area and a sudden decrease in air permeability. Summary of the Invention

[0003] To address the aforementioned problems and solve the issues of existing baghouse dust collectors being unable to withstand high temperatures and being prone to clogging, this invention proposes a high-temperature resistant rotary dust collector.

[0004] The technical solution includes a shell, which is a horizontally placed cylindrical hollow tube. Inside the shell, multiple sintered mesh plates are fixed in the left and right directions and are perpendicular to the central axis of the shell. There are gaps between adjacent sintered mesh plates and between the sintered mesh plates at the left and right ends and the left and right end faces of the shell. The gaps between adjacent gaps are not connected. Two adjacent sintered mesh plates are grouped together. The intervals within each group of sintered mesh plates are exhaust gas filter chambers. The exhaust gas filter chambers and the sintered mesh plates on both sides of them constitute a filter unit. The upper end of the shell has multiple air inlets that are connected to the exhaust gas filter chambers one by one. There is an ash discharge port on the shell below each exhaust gas filter chamber. The interval between two adjacent filter units and the interval between the sintered mesh plates at the left and right ends and the left and right end faces of the shell are exhaust gas collection chambers. Each exhaust gas collection chamber has an exhaust port on the shell below it. There is a hollow shaft at the central axis of the shell. The hollow shaft passes through multiple sintered mesh plates and can rotate relative to the sintered mesh plates. A cleaning unit is fixed on the hollow shaft in each exhaust gas filter chamber to clean the sintered mesh plates on the left and right sides of the exhaust gas filter chamber. Each exhaust gas collection chamber has a hollow shaft fixed with a backflush pipe, which is connected to high-pressure gas and blows gas onto the sintering mesh plate.

[0005] This invention uses sintered mesh as the filter element, which is resistant to high temperatures and avoids thermal shrinkage. A cleaning brush, rotating continuously with a hollow shaft, performs continuous and uniform physical cleaning of the filter surface, with no cleaning intervals and brush bristles covering the entire circumference, overcoming the uneven distribution defects of pulse backflushing. Dust removed during cleaning falls directly to the bottom of the hopper and is actively pushed into the ash discharge port by a scraper, ensuring a completely enclosed process and preventing secondary dust generation. The backflushing pipe serves as an auxiliary cleaning method, with its working cycle and interval dynamically adjustable according to the system pressure difference, balancing cleaning effectiveness and energy saving. The cleaning brush bristles are detachable modules, and the sintered mesh is assembled in sections for convenient maintenance. A gas buffer chamber, in conjunction with a solenoid valve, opens and closes sequentially to ensure stable gas supply pressure to each backflushing pipe, ensuring reliable auxiliary cleaning. Attached Figure Description

[0006] Figure 1 This is a perspective view of the present invention (with the gas buffer chamber and solenoid valve removed).

[0007] Figure 2 This is a front sectional view of the present invention.

[0008] Figure 3 For the present invention Figure 2 The front sectional view after removing the cleaning unit.

[0009] Figure 4 This is a perspective view of the sintered mesh plate, hollow shaft, ash discharge port, and exhaust port of the present invention.

[0010] Figure 5 This is a perspective view of the cleaning brush of the present invention.

[0011] Figure 6 This is a front view of the cleaning brush of the present invention.

[0012] Figure 7 This is a front view of the vertical rod of the cleaning brush of the present invention.

[0013] Figure 8 This is a perspective view of the rectangular blocks on the cleaning brush of the present invention.

[0014] Figure 9 This is a front view of the circular skeleton of the sintered mesh plate in this invention.

[0015] Figure 10 This is a front view of the sintering mesh of the present invention.

[0016] Figure 11 This is a front view of the annular plate of the present invention. Detailed Implementation

[0017] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] Depend on Figures 1 to 11 The present invention includes a shell 1, which is a horizontally placed cylindrical hollow tube. Multiple sintered mesh plates 2 are fixed in the left and right directions inside the shell 1 and are perpendicular to the central axis of the shell 1. There are gaps between adjacent sintered mesh plates 2 and between the sintered mesh plates 2 at the left and right ends and the left and right end faces of the shell 1. The gaps between adjacent gaps are not connected. Two adjacent sintered mesh plates 2 are grouped together. The interval within each group of sintered mesh plates 2 is a tail gas filter chamber 3. The tail gas filter chamber 3 and the sintered mesh plates 2 on both sides of it constitute a filter unit. The upper end of the shell 1 has multiple air inlets 4 that are connected one by one with the tail gas filter chamber 3. There is an ash discharge port 8 on the shell 1 below each tail gas filter chamber 3. The interval between two adjacent filter units and the interval between the sintered mesh plate 2 at the left and right ends and the left and right end faces of the shell 1 are exhaust gas collection chambers 5. Each exhaust gas collection chamber 5 has an exhaust port 9 on the shell 1 below it. There is a hollow shaft 6 at the central axis of the shell 1. The hollow shaft 6 passes through multiple sintered mesh plates 2 and can rotate relative to the sintered mesh plates 2. A cleaning unit is fixed on the hollow shaft 6 in each exhaust gas filter chamber 3 to clean the sintered mesh plates 2 on the left and right sides of the exhaust gas filter chamber 3. Each exhaust gas collection chamber 5 has a hollow shaft 6 fixed with a backflush pipe 7, which is connected to high-pressure gas and blows gas onto the sintering mesh plate 2.

[0019] Each exhaust gas filter chamber 3 has a cleaning unit consisting of two cleaning brushes 10. Each cleaning brush 10 consists of a vertical rod 11 and bristles 12 on one side of the vertical rod 11. The two cleaning brushes 10 are arranged left and right and are close to the sintered mesh plate 2 on the corresponding side. The bristles 12 on each cleaning brush 10 are in contact with the end face of the corresponding sintered mesh plate 2. When the hollow shaft 6 drives the cleaning brush 10 to rotate, the brush bristles 12 clean the dust on the end face of the sintered mesh plate 2.

[0020] The vertical rod 11 is a rectangular rod, and multiple rectangular blocks 13 arranged vertically are detachably installed on the side of the vertical rod 11 near the sintered mesh plate 2. The brush bristles 12 are fixed on the rectangular blocks 13. The vertical rod 11 has a vertical T-shaped groove, and one end of the rectangular block 13 is a T-shaped head. The rectangular block 13 is installed in the T-shaped groove through the T-shaped head, forming a structure in which the rectangular block 13 can be detachably installed on the vertical rod 11. Because the rectangular block 13 is detachably mounted on the vertical rod 11, it is easy to replace the bristles 12 after they wear out after a period of use. The upper end of the vertical rod 11 is fixed with a scraper 14. The scraper 14 is a strip plate, and its length direction extends along the axial direction of the shell 1. There is a gap between the outer edge of the scraper 14 and the inner wall of the shell 1. To prevent the two scrapers 14 in each exhaust gas filter chamber 3 from interfering with each other, the two vertical rods 11 are angled together by their projections on the sintered mesh plate 2, and the angle is 180°. The gap between the outer edge of the scraper 14 (i.e. the end away from the hollow shaft 6) and the inner wall of the housing 1 is controlled at 1-3mm. The above gap size can prevent the scraper 14 from contacting the housing 1 to reduce wear and rotation resistance, and can also effectively push the accumulated dust to the ash discharge port 8. In use, the hollow shaft 6 drives the cleaning brush 10 to rotate, and the scraper 14 revolves around the hollow shaft 6 with the vertical rod 11. When the scraper 14 passes through the lower half of the exhaust gas filter chamber 3, its outer edge pushes the dust deposited on the inner wall of the bottom of the housing 1 into the ash discharge port 8. Since there is a small gap between the outer edge of the scraper 14 and the bottom of the housing 1, most of the dust will be pushed by the scraper 14 and fall into the ash discharge port 8. A small amount of residual dust can be cleaned off in subsequent rotations. From the appendix Figure 7 It can be seen that the scraper 14 can be installed in the following way: the upper end of the vertical rod 11 is fixed with a mounting plate, the mounting plate has a through hole, the scraper 14 has a threaded hole, and the scraper 14 is fixed to the mounting plate with bolts. The lower end of the vertical rod 11 is fixed with an arc-shaped plate, and the vertical rod 11 is fixed to the hollow shaft 6 by the arc-shaped plate and screws.

[0021] To facilitate installation and subsequent maintenance, the sintered mesh plate 2 is composed of a circular frame 15 and a sintered mesh 16 fixed on the circular frame 15. The circular frame 15 is composed of multiple fan-shaped frames 17 spliced ​​together. Each fan-shaped frame 17 has a fan-shaped fixing frame. The sintered mesh 16 is a fan-shaped frame corresponding to the fan-shaped fixing frame and is fixed in the fan-shaped fixing frame. Multiple annular plates 20 are fixed inside the cavity of the shell 1 by welding or other means. The annular plates 20 have threaded holes, and the fan-shaped frame 17 has through holes. The fan-shaped frame 17 is fixed to the annular plates 20 by bolts to form a circular frame 15. The sintered mesh 16 is fixed within the fan-shaped fixing frame of the fan-shaped skeleton 17 by means of screws or bolts. The outer edge of the fan-shaped frame 17 fits into the inner edge of the shell 1, achieving the effect of preventing adjacent gaps from connecting.

[0022] The outer side of the housing 1 has a gas buffer chamber 18; one end of the hollow shaft 6 extends out of the housing 1, the gas buffer chamber 18 is fixed on the hollow shaft 6 and rotates synchronously with the hollow shaft 6, and the gas buffer chamber 18 is connected to high-pressure gas through a rotary joint. The hollow shaft 6 has multiple air pipes that correspond one-to-one with the backflush pipes 7 inside its cavity. One end of each air pipe is connected to one of the backflush pipes 7, and the other end is connected to the gas buffer chamber 18. Each air pipe is equipped with a solenoid valve 19, which controls the opening and closing of the backflush pipes 7. The solenoid valve rotates with the hollow shaft 6 and is connected to an external electrical control cabinet. The electrical control cabinet controls multiple solenoid valves 19 to open and close sequentially, ensuring that only one backflush pipe 7 is in the backflush state at the same time to maintain the stability of the backflush air pressure. All backflush pipes 7 completing one backflush operation in sequence is defined as one working cycle. There is an adjustable interval between two adjacent working cycles. The interval between two working cycles can be dynamically adjusted by the electrical control cabinet according to the preset program or the real-time detected system pressure difference.

[0023] The backflush pipe 7 is a hollow rectangular pipe with a vertical air outlet groove on the side facing the sintered mesh plate 2. The length of the air outlet groove is slightly smaller than the radius of the sintered mesh plate 2. For the exhaust gas collection chamber 5 located between two adjacent filter units, two backflush pipes 7 are fixed on the hollow shaft 6 inside. The two backflush pipes 7 are arranged symmetrically to the left and right along the axial direction of the hollow shaft 6, and the opening directions of the air outlet slots of the two backflush pipes 7 are opposite. The air outlet slot of the left backflush pipe 7 faces the sintered mesh plate 2 on the left, and the air outlet slot of the right backflush pipe 7 faces the sintered mesh plate 2 on the right, so as to backflush and clean the sintered mesh plates 2 on both sides of the exhaust gas collection chamber 5 respectively. For the exhaust gas collection chamber 5 between the sintered mesh plate 2 at the left and right ends and the end face of the shell 1, there is only one backflush pipe 7 fixed on the hollow shaft 6 inside. The opening direction of the exhaust groove of the backflush pipe 7 is towards the only adjacent sintered mesh plate 2.

[0024] The specific control logic of the backflush pipe of this invention is as follows: The hollow shaft 6 drives all the backflush pipes 7 to rotate continuously at a constant speed. When the electrical control cabinet selects a certain backflush pipe 7 (e.g., the nth backflush pipe) and opens its corresponding solenoid valve 19, the high-pressure gas enters the backflush pipe 7 through the gas buffer chamber 18 and the corresponding gas pipe, and is continuously sprayed from its outlet slot to the surface of the adjacent sintered mesh plate 2, blowing the dust back into the exhaust gas filter chamber 3. While the solenoid valve 19 remains open, since the air outlet groove is a vertical strip, as the backflush pipe 7 rotates, the high-pressure gas sprayed from the air outlet groove will sweep across the entire filter sector of the sintered mesh plate 2 under the responsibility of the backflush pipe in sequence. The opening duration of the solenoid valve 19 should be set according to the angle that the backflush pipe 7 needs to clean; for example, if each backflush pipe 7 is required to clean the entire sintered mesh plate 2 (i.e., 360°), the opening duration should be equal to the time of one rotation; the opening time of each backflush pipe 7 in this invention is a multiple of one week, such as allowing each backflush pipe 7 to clean for one week, two weeks or several weeks, to ensure that the surface of the sintered mesh plate 2 corresponding to it is fully backflushed; After the duration of the aforementioned backflush pipe 7 is completed, the control cabinet closes the solenoid valve 19 of the current backflush pipe 7 and then opens the solenoid valve of the next backflush pipe 7 (n+1). Alternatively, the solenoid valve of the n+1 backflush pipe 7 can be opened after a certain period of time, and so on, until all backflush pipes 7 have completed one backflush operation. The solenoid valve of the next backflush pipe 7 can be opened immediately or after a certain period of time, and this can be adjusted by the control cabinet according to the preset program. Once all backflush pipes 7 have completed backflushing, one work cycle is completed, and the system enters the interval waiting stage. The interval between two work cycles can be dynamically adjusted by the electrical control cabinet according to the preset program or the real-time detected system differential pressure, thereby avoiding energy waste or insufficient dust removal caused by fixed timing. In this invention, a pressure sensor can be installed in each of the exhaust gas filter chamber 3 and the exhaust gas collection chamber 5. The electrical control cabinet collects the pressure difference between the two pressure sensors. When the pressure difference reaches the set value, the next working cycle is started.

[0025] The operation of the relatively independent air supply pipeline of the backflush pipe 7 and the sequential opening and closing of the solenoid valve 19 in this invention ensures that the gas buffer chamber 18 supplies high-pressure gas to only one backflush pipe 7 at a time, so that the air pressure in the backflush pipe 7 meets the requirements, thereby ensuring the backflush effect.

[0026] Specific embodiments of the electrical control cabinet and solenoid valve of this invention: Since the solenoid valve 19 rotates with the hollow shaft 6 while the electrical control cabinet remains stationary, a rotary electrical connection device is required between the solenoid valve 19 and the electrical control cabinet. Specifically, this invention uses a multi-channel conductive slip ring to realize the transmission of electrical energy and control signals between the fixed component and the rotating component. The structure and installation method of the conductive slip ring are as follows: The conductive slip ring consists of a rotating part (rotor) and a stationary part (stator); the rotor is mounted and fixed on the extended end of the hollow shaft 6 and rotates synchronously with the hollow shaft 6; the stator is fixed to the external bracket by anti-rotation plates and remains stationary; The slip ring has multiple mutually insulated conductive channels inside, each channel corresponding to a control signal line of a solenoid valve 19; each channel on the rotor is welded with a wire, and multiple wires are electrically connected to the corresponding solenoid valve 19; each channel on the stator has a wire led out, which is then connected to the corresponding output port of the electrical control cabinet. The electrical control cabinet controls the opening and closing of the solenoid valve 18 through the conductive slip ring.

[0027] The process of using this invention is as follows: First, the drive motor is started, which drives the hollow shaft 6 to rotate continuously at a constant speed. The cleaning brush 10 and the back-blowing pipe 7 on the hollow shaft 6 rotate synchronously. At the same time, the dust-laden gas is sent into each exhaust gas filter chamber 3 through the air inlet 4 under the action of the induced draft fan. After the dust-laden gas enters the exhaust gas filter chamber 3, it passes through the sintered mesh plates 2 on the left and right sides under the pressure difference. The dust is intercepted and adsorbed on the windward surface of the sintered mesh plates 2. The purified gas enters the exhaust gas collection chamber 5 and is finally discharged through the exhaust port 9 to enter the subsequent processing section. During the dust filtration process, the bristles 12 on the cleaning brushes 10 on both sides of each exhaust gas filter chamber 3 keep in contact with the end face of the sintered mesh plate 2. As the hollow shaft 6 rotates, the bristles 12 sweep off the dust adhering to the surface of the sintered mesh plate 2, allowing it to fall naturally to the bottom of the exhaust gas filter chamber 3 and be discharged through the ash discharge port 8. At the same time, the scraper 14 fixed to the upper end of the vertical rod 11 of the cleaning brush 10 rotates around the hollow shaft 6 with the vertical rod 11. When the scraper 14 passes through the lower half of the exhaust gas filter chamber 3, its outer edge pushes the dust deposited at the bottom of the inner wall of the shell 1 into the ash discharge port 8, and the dust is discharged through the ash discharge port 8. While the above cleaning action continues, the electrical control cabinet controls the solenoid valves 19 corresponding to each backflush pipe 7 to open and close sequentially via conductive slip rings, thereby achieving auxiliary backflush cleaning. Specifically, the electrical control cabinet selects the first backflush pipe 7 according to a preset sequence, opens its solenoid valve 19, and high-pressure gas enters the gas buffer chamber 18 from an external gas source via a rotary joint, then enters the backflush pipe 7 via an independent gas pipe. The backflush pipe 7 continuously sprays high-pressure gas into the outlet slot on the side facing the sintered mesh plate 2. As the backflush pipe 7 rotates with the hollow shaft 6, the high-pressure gas sprayed from the outlet slot will sequentially sweep across the entire filter sector of the sintered mesh plate 2 covered by the backflush pipe 7. The time the solenoid valve 19 remains open can be set as needed (e.g., rotating the backflush pipe 7 by one...). (Weeks, two weeks, or several weeks) to ensure that the surface of the sintered mesh plate 2 is fully backflushed; then the electrical control cabinet closes the current solenoid valve 19 and immediately opens the solenoid valve 19 of the next backflushing pipe 7, or opens the next one after a preset time interval, and so on, until all backflushing pipes 7 have completed one backflushing operation, thus completing one work cycle. After that, the system enters an interval waiting stage. The interval duration can be dynamically adjusted by the electrical control cabinet according to a preset program or by the system pressure difference detected in real time by the pressure sensor. After the interval ends, the next work cycle begins. The high-pressure gas sprayed by the backflushing pipe 7 backflushes the dust remaining on the surface of the sintered mesh plate 2 into the exhaust gas filter chamber 3. The detached dust also falls to the bottom and is pushed into the ash discharge port 8 by the scraper 14.

[0028] In this invention, the hollow shaft 6 and the sintered mesh plate 2 are sealed by a packing seal, so that the intervals separated by multiple sintered mesh plates 2 are not connected, thus ensuring the sealing of each interval.

[0029] In this invention, the hollow shaft 6 is driven by a motor.

[0030] The technical effects of this invention are as follows: (1) High temperature resistance: The present invention uses sintered mesh plate 2 as filter element. Its material has high temperature resistance, which avoids the problem of thermal shrinkage and reduced air permeability of traditional bag dust collectors in high temperature flue gas environment, and ensures the filtration efficiency and operation stability of dust collector under high temperature conditions.

[0031] (2) Continuous and uniform dust removal: Each exhaust gas filter chamber 3 is equipped with a cleaning brush 10 that rotates with the hollow shaft 6. The brush bristles 12 directly contact the surface of the sintered mesh plate 2 for continuous physical cleaning. Since the cleaning action is synchronized with the filtration process, there is no dust removal interval. At the same time, the brush bristles 12 sweep evenly across the entire surface of the sintered mesh plate 2 along the circumferential direction, which completely overcomes the defect of uneven distribution of pulse jet airflow and realizes the continuity and uniformity of dust removal.

[0032] (3) Avoid secondary dust: The dust brushed off by the cleaning brush 10 falls directly into the bottom of the exhaust gas filter chamber 3 and is actively scraped into the ash discharge port 8 by the scraper 14 that rotates with the hollow shaft 6 for centralized discharge; the entire dust cleaning and ash discharge process of this invention is completed in the closed exhaust gas filter chamber 3, and the dust that falls off does not need to pass through adjacent filter elements to be discharged, thus avoiding the problem of secondary dust and significantly improving the cleanliness of dust cleaning.

[0033] (4) The energy consumption of dust removal can be dynamically optimized: The present invention uses a program to control multiple solenoid valves 19 to open the backflush pipe in sequence. The working cycle and interval of the backflush pipe 7 can be dynamically adjusted according to the preset program of the electrical control cabinet or the real-time detection of the system pressure difference. On the basis of the cleaning brush 10 as the main dust removal, the backflush pipe 7 works intermittently as an auxiliary means, avoiding the energy waste caused by fixed timing pulses, while ensuring that the system resistance is within a controllable range.

[0034] (5) Easy to maintain: The bristles 12 on the cleaning brush 10 adopt a detachable installation structure of rectangular blocks 13 and T-shaped grooves, which makes it easy to replace them individually after wear; the sintered mesh plate 2 is spliced ​​together by multiple fan-shaped skeletons 17, and the sintered mesh 16 can also be disassembled in sections, which greatly reduces the later maintenance cost.

[0035] (6) Ensure stable backflush air pressure: Through the control strategy of sequential opening and closing of the gas buffer chamber 18, independent air pipe and solenoid valve 19, air is supplied to only one backflush pipe 7 each time, which ensures sufficient and stable backflush air pressure and improves the auxiliary backflush cleaning effect.

Claims

1. A high-temperature resistant rotary dust collector, comprising a housing (1), wherein the housing (1) is a horizontally placed cylindrical hollow tube, characterized in that, Multiple sintered mesh plates (2) perpendicular to the central axis of the shell (1) are fixed in the left and right directions inside the shell (1). There are gaps between adjacent sintered mesh plates (2) and between the sintered mesh plates (2) at the left and right ends and the left and right end faces of the shell (1). The gaps between adjacent gaps are not connected. Two adjacent sintered mesh plates (2) are grouped together. The interval in each group of sintered mesh plates (2) is a tail gas filter chamber (3). The tail gas filter chamber (3) and the sintered mesh plates (2) on both sides of it constitute a filter unit. The upper end of the shell (1) has multiple air inlets (4) that are connected to the tail gas filter chambers (3) one by one. There are ash discharge ports (8) on the shell (1) below each tail gas filter chamber (3). The interval between two adjacent filter units, the interval between the sintered mesh plate (2) at the left and right ends and the left and right end faces of the shell (1) are exhaust gas collection chambers (5), and exhaust ports (9) are opened on the shell (1) below each exhaust gas collection chamber (5). There is a hollow shaft (6) at the central axis of the shell (1). The hollow shaft (6) passes through multiple sintered mesh plates (2) and can rotate relative to the sintered mesh plates (2). A cleaning unit is fixed on the hollow shaft (6) in each exhaust gas filter chamber (3) to clean the sintered mesh plates (2) on the left and right sides of the exhaust gas filter chamber (3). Each exhaust gas collection chamber (5) has a hollow shaft (6) fixed with a backflush pipe (7), which is connected to high-pressure gas and blows gas onto the sintering mesh plate (2).

2. The high-temperature resistant rotary dust collector according to claim 1, characterized in that, Each exhaust gas filter chamber (3) has a cleaning unit consisting of two cleaning brushes (10). Each cleaning brush (10) consists of a vertical rod (11) and bristles (12) on one side of the vertical rod (11). The two cleaning brushes (10) are arranged left and right and are close to the sintered mesh plate (2) on the corresponding side. The bristles (12) on each cleaning brush (10) are in contact with the end face of the corresponding sintered mesh plate (2).

3. The high-temperature resistant rotary dust collector according to claim 2, characterized in that, The vertical rod (11) is a rectangular rod. Multiple rectangular blocks (13) arranged vertically are detachably installed on the side of the vertical rod (11) near the sintered mesh plate (2). The brush bristles (12) are fixed on the rectangular blocks (13). A vertical T-shaped groove is opened on the vertical rod (11), and one end of the rectangular block (13) is a T-shaped head. The rectangular block (13) is installed in the T-shaped groove through the T-shaped head, forming a structure in which the rectangular block (13) can be detachably installed on the vertical rod (11). The upper end of the vertical rod (11) is fixed with a scraper (14). The scraper (14) is a strip plate, and its length direction extends along the axial direction of the shell (1). There is a gap between the outer edge of the scraper (14) and the inner wall of the shell (1). The two vertical rods (11) have an angle between their projections on the sintered mesh plate (2), and the angle is 180°. The lower end of the vertical rod (11) is fixed with an arc plate, and the vertical rod (11) is fixed to the hollow shaft (6) by the arc plate and screws.

4. The high-temperature resistant rotary dust collector according to claim 1, characterized in that, The sintered mesh plate (2) is composed of a circular skeleton (15) and a sintered mesh (16) fixed on the circular skeleton (15); the circular skeleton (15) is spliced ​​together from multiple fan-shaped skeletons (17), each fan-shaped skeleton (17) has a fan-shaped fixing frame, and the sintered mesh (16) is a fan-shaped corresponding to the fan-shaped fixing frame and is fixed in the fan-shaped fixing frame. Multiple annular plates (20) are fixed inside the cavity of the shell (1). The annular plates (20) have threaded holes, and the fan-shaped frame (17) has through holes. The fan-shaped frame (17) is fixed to the annular plates (20) by bolts to form a circular frame (15). The sintered mesh (16) is fixed in the fan-shaped fixing frame of the fan-shaped skeleton (17) by screws or bolts or other installation methods; The outer edge of the fan-shaped frame (17) is in contact with the inner edge of the shell (1).

5. The high-temperature resistant rotary dust collector according to claim 1, characterized in that, The outer side of the housing (1) has a gas buffer chamber (18); one end of the hollow shaft (6) extends out of the housing (1), the gas buffer chamber (18) is fixed on the hollow shaft (6) and rotates synchronously with the hollow shaft (6), and the gas buffer chamber (18) is connected to high-pressure gas through a rotary joint; The hollow shaft (6) has multiple air pipes that correspond one-to-one with the backflush pipes (7). One end of each air pipe is connected to one of the backflush pipes (7), and the other end is connected to the gas buffer chamber (18). Each air pipe is equipped with a solenoid valve (19), which controls the opening and closing of the backflush pipes (7). The solenoid valve rotates with the hollow shaft (6) and is connected to an external electrical control cabinet. The electrical control cabinet controls multiple solenoid valves (19) to open and close sequentially, ensuring that only one backflush pipe (7) is in the backflush state at the same time. All backflush pipes (7) completing one backflush operation in sequence is defined as a working cycle. An adjustable interval time is provided between two adjacent working cycles. The interval time between two working cycles can be dynamically adjusted by the electrical control cabinet according to the preset program or the real-time detected system pressure difference.

6. The high-temperature resistant rotary dust collector according to claim 5, characterized in that, The backflush tube (7) is a hollow rectangular tube with a vertical air outlet groove on the side facing the sintered mesh plate (2). The length of the air outlet groove is slightly smaller than the radius of the sintered mesh plate (2). For the exhaust gas collection chamber (5) located between two adjacent filter units, two backflush pipes (7) are fixed on the hollow shaft (6) inside. The two backflush pipes (7) are arranged symmetrically to the left and right along the axis of the hollow shaft (6), and the opening directions of the air outlet slots of the two backflush pipes (7) are opposite. The air outlet slot of the left backflush pipe (7) faces the sintered mesh plate (2) on the left, and the air outlet slot of the right backflush pipe (7) faces the sintered mesh plate (2) on the right, so as to backflush and clean the sintered mesh plates (2) on both sides of the exhaust gas collection chamber (5). For the tail gas collection chamber (5) between the sintered mesh plate (2) at the left and right ends and the end face of the shell (1), there is only one backflush pipe (7) fixed on the hollow shaft (6) inside. The opening direction of the gas outlet groove of the backflush pipe (7) is facing the only adjacent sintered mesh plate (2).

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