High-temperature-resistant and corrosion-resistant bag type dust removal device for kiln tail

Abstract

The invention discloses a high-temperature-resistant and corrosion-resistant bag type dust removal device for a kiln tail, and relates to the technical field of bag type dust removal devices.The dust removal device comprises a filtering mechanism, a leakage-proof mechanism, a cleaning mechanism and a detection mechanism, the leakage-proof mechanism and the filtering mechanism are connected in a fastened mode, the cleaning mechanism and the filtering mechanism are connected in a fastened mode, and the detection mechanism and the filtering mechanism are connected in a fastened mode; the leakage-proof mechanism, the cleaning mechanism and the detection mechanism are all located in the filtering mechanism, the filtering mechanism, the leakage-proof mechanism and the cleaning mechanism are all electrically connected with the detection mechanism, the leakage-proof mechanism is used for folding a cloth bag of the dust removal device, and the cleaning mechanism is used for cleaning residual dust of the filtering mechanism; the detection mechanism is used for detecting the flow speed in the filtering mechanism and the damage condition of the leakage-proof mechanism, linkage of the leakage-proof mechanism and the filtering mechanism controls safety and condensation prevention of the cloth bag, the cleaning mechanism cleans dust in a periodic pulse or airflow mode, and the detection mechanism ensures monitoring of the filtering process in a fluorescence detection mode.

Description

Technical Field

[0001] The invention relates to the technical field of bag dust removal devices, in particular to a high temperature resistant and corrosion resistant bag dust removal device for a kiln tail. Background Art

[0002] At present, the bag-type dust removal devices commonly used in industrial production are constantly upgraded and evolved to meet the needs of dust control under large-scale, high-temperature, high-humidity or variable working conditions. In high-temperature, high-humidity and highly corrosive gas environments, in order to meet the more stringent requirements of environmental protection emission standards in multiple industries, the research and development of bag-type dust removal devices plays an important role.

[0003] Existing bag dust removal equipment usually includes the following key links: filtration, dust discharge components, and cleaning, but most of them do not have sophisticated leak prevention monitoring, and lack detailed support for multi-point flow rate or filter bag opening detection, and often have functional deficiencies.

[0004] Firstly, in the traditional bag-type dust removal system, the folding or sealing mechanism of the filter bag is relatively simple, and there is a lack of special anti-condensation and automatic folding components. Once there is high humidity or hot and cold shock, the bag is prone to deformation or partial damage and it is difficult to detect in time. Secondly, most cleaning systems can only perform pressure difference monitoring or timed blowing, and cannot perform real-time cleaning for dust accumulation in different areas. Although there is insulation outside the box, the anti-condensation and high-temperature stabilization effects are limited, which can easily cause condensation and adhesion of the filter bag or damage to the heat-resistant material. Furthermore, common detection mainly focuses on the overall pressure difference or single-point temperature, and lacks detection of the bag mouth, flow velocity distribution and even the damaged point. If the filter bag is partially damaged or the high temperature and high humidity state is not detected for a long time, it is very easy to cause dust leakage, condensation and bag sticking. Therefore, technical personnel in this field provide a high-temperature and corrosion-resistant bag-type dust removal device for the kiln tail to solve the problems raised in the above background. Summary of the invention

[0005] The object of the present invention is to provide a bag-type dust removal device for kiln tail that is resistant to high temperature and corrosion, so as to solve the problems raised in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The dust removal device includes a filtering mechanism, a leak prevention mechanism, a cleaning mechanism and a detection mechanism. The leak prevention mechanism and the filtering mechanism are tightly connected, the cleaning mechanism and the filtering mechanism are tightly connected, and the detection mechanism and the filtering mechanism are tightly connected. The leak prevention mechanism, the cleaning mechanism and the detection mechanism are all located inside the filtering mechanism. The filtering mechanism, the leak prevention mechanism and the cleaning mechanism are all electrically connected to the detection mechanism. The leak prevention mechanism is used for folding the bags of the dust removal device, the cleaning mechanism is used for cleaning the residual dust in the filtering mechanism, and the detection mechanism is used to detect the internal flow velocity of the filtering mechanism and the damage of the leak prevention mechanism.

[0008] By adopting the above technical solution, the filtering mechanism is fastened and electrically connected to the anti-leakage mechanism, the cleaning mechanism, and the detection mechanism, so that the entire dust removal device forms a compact integrated structure: the anti-leakage mechanism is used to fold the bag and prevent dust leakage, the cleaning mechanism cleans the residual dust inside in time after filtering, and the detection mechanism monitors the internal flow rate and damage in real time. The workflow is first completed by the filtering mechanism to complete the main filtration of dust-containing gas, the anti-leakage mechanism maintains sealing during the bag operation, the cleaning mechanism regularly cleans the filtered dust, and the detection mechanism timely feedbacks the filter bag status and flow rate abnormality through electrical acquisition signals. It is to rely on the coordination of various mechanisms: the linkage between the anti-leakage mechanism and the filtering mechanism controls the safety of the bag and prevents condensation; the cleaning mechanism cleans the dust in a periodic pulse or airflow mode; the detection mechanism relies on sensing and fluorescence detection to ensure accurate monitoring of the filtration process, and finally achieve the effect of reducing emissions, ensuring dust removal efficiency and equipment safety.

[0009] Furthermore, the filtering mechanism includes a dust removal box, an ash hopper, a dust and gas inlet pipe, a flower plate, a filter bag, an inspection door, a clean air outlet pipe, an ash discharge assembly and a sandwich panel. The dust removal box and the ash hopper are tightly connected, the dust and gas inlet pipe is connected to the dust removal box, the flower plate and the dust removal box are tightly connected, the filter bag and the flower plate are tightly connected, the inspection door and the dust removal box are tightly connected, the clean air outlet pipe is connected to the dust removal box, the clean air outlet pipe is located above the dust and gas inlet pipe, the ash discharge assembly and the ash hopper are tightly connected, the ash hopper is located at the lower end of the dust removal box, the ash discharge assembly is located at the lower end of the ash hopper, the filter bag is made of glass fiber material on the outside and uses PTFE coating, the sandwich panel is made of rock wool or aluminum silicate fiber, the thickness of the sandwich panel is 200-250mm, and the sandwich panel is used in the dust removal box to ensure that the temperature drop is controlled within 10°C.

[0010] By adopting the above technical scheme, the filtering mechanism is composed of a dust removal box, an ash hopper, a dust and gas inlet pipe, a flower plate, a filter bag, an inspection door, a clean air outlet pipe, an ash discharge assembly and a sandwich plate: the dust removal box and the ash hopper are fastened to form a main frame, and the dust and gas inlet pipe is connected to the dust removal box to allow dust-containing gas to enter; after the flower plate and the dust removal box are fastened, the filter bag can be installed, and the filter bag is made of glass fiber and covered with PTFE coating to enhance temperature resistance and chemical resistance; the inspection door is fastened to the dust removal box for maintenance; the clean air outlet pipe is connected to the outlet above the dust removal box to discharge the purified airflow; the ash discharge assembly is fastened to the ash hopper to facilitate the collection and discharge of accumulated dust; the sandwich plate is made of rock wool or aluminum silicate fiber material with a thickness of 200-250mm, surrounding the peripheral wall of the dust removal box to control the temperature drop within 10°C. During the working process, the dust-laden airflow enters the dust removal box from the dust air inlet pipe, is filtered by the filter bag, and the dust settles into the ash hopper; the filter bag is stabilized and easy to replace through the flower plate, and the inspection door is used for regular maintenance or observation of the internal conditions; the purified air is finally discharged from the clean air outlet pipe; the efficient capture of dust by the filter bag and the thermal insulation effect of the sandwich panel are utilized to ensure high filtration efficiency and thermal stability, and finally achieve efficient dust removal and temperature control effects on the airflow.

[0011] Furthermore, the ash discharge assembly includes a star-shaped air lock valve, a shear worm, a scraper, an annular rack and a shear motor. The star-shaped air lock valve and the ash hopper are fastened together, the shear motor and the ash hopper are fastened together, the shear motor and the annular rack are transmission-connected, the scraper and the annular rack are fastened together, and the annular rack and the shear worm are transmission-connected.

[0012] By adopting the above technical scheme, the ash discharge assembly is composed of a star-shaped air lock valve, a shear worm, a scraper, an annular rack and a shear motor: the star-shaped air lock valve is tightly connected to the ash hopper to keep the internal airflow from leaking during ash discharge; the shear motor is tightly connected to the ash hopper and connected through an annular rack transmission. Under the drive of the motor, the annular rack rotates to pull the scraper and the shear worm; the scraper is tightly connected to the annular rack to clean or scrape off the bottom sediment of the ash hopper; the linkage of the annular rack and the shear screw completes the crushing and discharge of the dust. In the work process, the dust falls into the ash hopper after being filtered by the filter bag, and the air lock state is maintained by the star-shaped air lock valve. The shear motor drives the annular rack to drive the scraper to clean the dust and cooperate with the shear worm to cut the agglomerated dust into pieces, and finally the dust is smoothly discharged from the device; relying on the combination of mechanical crushing, scraping and air lock sealing, continuous ash discharge and prevention of external airflow backflow are achieved, achieving efficient dust removal and sealing effects.

[0013] Furthermore, the anti-leakage mechanism includes a folding component, an iris component and an anti-condensation component. The folding component and the flower plate are fastened together. The folding component and the filter bag are transmission-connected. The folding component is used for folding the filter bag. The cross-sections of the folding component and the filter bag are both isosceles trapezoids. The anti-condensation component and the dust removal box are fastened together. The iris component and the flower plate are fastened together.

[0014] By adopting the above technical solution, the anti-leakage mechanism is composed of a folding component, an iris component and an anti-condensation component: the folding component is fastened to the flower plate and is transmission-connected to the filter bag, and is used to fold or unfold the filter bag into an isosceles trapezoidal cross section; wherein the folding component and the filter bag cross section are both designed to be isosceles trapezoidal, which can keep a close fit during movement; the anti-condensation component is fastened to the dust removal box, and is used to prevent water vapor condensation in a high humidity or high temperature environment; the iris component is fastened to the flower plate, and is used to adjustably seal the passage when repairing or replacing the filter bag. In the work process, when the filter bag needs to be folded or unfolded, the folding component moves in coordination with the transmission mechanism, so that the filter bag is deformed into an isosceles trapezoid, thereby reducing leakage and wind resistance; the anti-condensation component prevents condensation by controlling the ambient temperature or airflow; the iris component is used for sealing adjustment at the flower plate to cope with different working conditions. Relying on the mechanical control of the folding mechanism and the temperature / humidity control of the anti-condensation component, the folding and leakage prevention of the filter bag and the effective suppression of water vapor condensation are achieved, thereby achieving the effect of improving the dust removal efficiency and the life of the equipment.

[0015] Furthermore, the folding assembly includes a folding hinge, a folding ring, a folding elastic part, a fixed rod, a sliding rod, an electromagnetic block and a magnetic block. The fixed rod is fastened to the flower plate, the sliding rod is slidably connected to the fixed rod, the electromagnetic block is fastened to the fixed rod, the folding elastic part is fastened to the electromagnetic block, the folding elastic part is fastened to the magnetic block, the magnetic block is fastened to the sliding rod, the electromagnetic block and the magnetic block are transmitted by repulsion of magnetic poles, the folding ring is fastened to the filter bag, the folding ring is slidably connected to the folding hinge, and the sliding rod is transmission-connected to the folding ring.

[0016] By adopting the above technical scheme, the folding component is composed of a folding hinge rod, a folding ring, a folding elastic part, a fixed rod, a sliding rod, an electromagnetic block and a magnetic block: the fixed rod is fastened to the flower plate as a supporting base point; the sliding rod is slidably connected to the fixed rod to provide an adjustable margin; the electromagnetic block is fastened to the fixed rod and to the folding elastic part, the other end of the folding elastic part is fastened to the magnetic block, and the magnetic block is fixed to the sliding rod, and the flexible push and pull of the sliding rod is realized through the repulsive transmission of the magnetic poles of the electromagnetic block and the magnetic block; the folding ring is fastened to the filter bag to directly act on the surface of the filter bag, and is slidably connected to the folding hinge rod, and the sliding rod is transmission-connected to the folding ring, so that the filter bag has a controllable storage space when opening or folding. During the working process, when the filter bag needs to be folded to prevent leakage, the electromagnetic block is energized to repel the magnetic block, pushing or retracting the folding ring and the folding hinge rod, and the filter bag moves with the folding ring to achieve a tight folding of an isosceles trapezoidal cross-section; the electromagnetic repulsion is combined with the elastic support of the elastic part to provide automatic or semi-automatic folding adjustment for the filter bag, ultimately reducing dust leakage caused by excessive vibration or irregular unfolding of the bag during high-pressure wind or backblowing cleaning.

[0017] Furthermore, the anti-condensation component includes a cooling box, a heating box, a temperature control pipe and a circulating pump. The cooling box and the temperature control pipe are connected, the heating box and the circulating pump are connected, the circulating pump and the temperature control pipe are connected, the temperature control pipe is arranged circumferentially around the dust removal box, the temperature control pipe is arranged spirally at the dust inlet pipe, and the temperature control pipe is arranged spirally at the lower end of the ash hopper.

[0018] By adopting the above technical solution, the anti-condensation component consists of a cooling box, a heating box, a temperature control pipe and a circulation pump: the cooling box is connected to the temperature control pipe, which is used to perform local cooling when the 400-degree high-temperature flue gas enters the treatment; the heating box is connected to the circulation pump, and the circulation pump drives the heat medium or refrigerant to circulate in the temperature control pipe; the temperature control pipe is distributed around the dust removal box and spirally surrounds the dust gas inlet pipe and the lower end of the ash hopper, and can be heated or cooled locally or overall to prevent condensation or excessive temperature. In the work process, the cooling box and the heating box form a closed-loop control through the circulation pump and the pipeline, and automatically switch the delivery direction and flow of the heat medium or refrigerant according to the real-time temperature requirements; through the hot and cold switching and the partitioned surrounding arrangement of the pipeline, the dust removal box can obtain a suitable temperature in different parts, and the adverse effects of water vapor condensation on the filter bag or dust emission are eliminated, and finally the dust removal efficiency and equipment stability are guaranteed.

[0019] Furthermore, the cleaning mechanism includes an electromagnetic pulse valve, a compressed air storage tank, a venturi, a cleaning component and a fan. The electromagnetic pulse valve and the dust removal box are tightly connected, the compressed air storage tank and the electromagnetic pulse valve are connected, the electromagnetic pulse valve and the venturi are connected, the cleaning component and the dust removal box are tightly connected, the fan and the dust removal box are tightly connected, and the fan is used to control the flow rate of the clean air outlet pipe.

[0020] By adopting the above technical scheme, the cleaning mechanism is composed of an electromagnetic pulse valve, a compressed air storage tank, a venturi, a cleaning component and a blower: the electromagnetic pulse valve is tightly connected to the dust removal box to control the release of compressed air during pulse blowing; the compressed air storage tank is connected to the electromagnetic pulse valve to provide an air source for blowing; after the electromagnetic pulse valve and the venturi are connected, the airflow is accelerated and introduced above the filter bag at the moment of blowing; the cleaning component is tightly connected to the dust removal box to further assist in cleaning the dust on the surface of the filter bag; the blower is tightly connected to the dust removal box to adjust or control the outlet air flow rate at the clean air outlet pipe. In the working process, when the dust accumulation in the filter bag is too thick or the resistance increases, the electromagnetic pulse valve opens, and the high-pressure air is sprayed into the inside of the filter bag through the venturi, forming a reverse impact and shaking off the attached dust; the cleaning component is supplemented by brushing or secondary air sweeping; relying on pulse airflow and mechanical auxiliary means, the filter bag can be periodically cleaned and a low resistance can be maintained, thereby improving the filtration efficiency and extending the life of the filter bag.

[0021] Furthermore, the cleaning component includes an electric slide rail, a lifting hydraulic cylinder, a cleaning brush and a cleaning motor. The lifting hydraulic cylinder and the electric slide rail are slidingly connected, the lifting hydraulic cylinder and the cleaning motor are transmission connected, and the cleaning motor and the cleaning brush are transmission connected.

[0022] By adopting the above technical solution, the cleaning component is composed of an electric slide rail, a lifting hydraulic cylinder, a cleaning brush and a cleaning motor: the electric slide rail and the lifting hydraulic cylinder are slidably connected, which is convenient for moving and cleaning at multiple positions inside the dust removal box; the lifting hydraulic cylinder is connected to the cleaning motor in a transmission manner, and the cleaning brush is adjusted up and down or at an angle by hydraulic means; the cleaning motor is connected to the cleaning brush in a transmission manner to drive the bristles to rotate or vibrate, thereby actively removing the residual dust on the surface of the filter bag. In the workflow, under the command of the electric slide rail, the cleaning component moves to the designated filter bag position, and the lifting hydraulic cylinder cooperates with the cleaning motor to push the cleaning brush close to the filter bag to achieve mechanical brushing or vibration; it is to combine electric drive with hydraulic thrust, and use the slide rail to flexibly arrange to accurately and efficiently remove the dust accumulated on the surface of each filter bag, and finally achieve the regeneration and maintenance of the filter bag by the cleaning mechanism, improve the filtering effect and extend the service life of the filter bag.

[0023] Furthermore, the detection mechanism includes a fluorescence detection component, a flow rate sensor and a temperature sensor. The fluorescence detection component is tightly connected to the dust removal box, the flow rate sensor is tightly connected to the dust removal box, and the temperature sensor is tightly connected to the dust removal box.

[0024] By adopting the above technical solution, the detection mechanism is composed of a fluorescent detection component, a flow rate sensor, and a temperature sensor: the fluorescent detection component is tightly connected to the dust removal box to detect the damage of the filter bag or the leak prevention mechanism; the flow rate sensor is tightly connected to the dust removal box to monitor the airflow velocity inside the dust removal box or between the filter bags in real time; the temperature sensor is tightly connected to the dust removal box to feedback the current internal temperature. In the work process, when the dust-laden airflow passes through the filter bag or performs dust cleaning and leak prevention operations, the detection mechanism captures the airflow velocity and temperature changes at any time. Once an over-limit or abnormal fluctuation occurs, an alarm is sent to the control system through an electrical connection; based on the sensor, multi-parameter monitoring of flow rate, temperature, and fluorescent signal (if there is damage or dust leakage) is performed to ensure the safe and efficient operation of the whole machine and timely detection of faults.

[0025] Furthermore, the fluorescence detection component includes a first fluorescent nozzle, a second fluorescent nozzle, and a fluorescence detector. The fluorescence detector is used to detect the intensity and color change of the fluorescent signal. The first fluorescent nozzle is tightly connected to the dust removal box, the second fluorescent nozzle is tightly connected to the flower plate, the first fluorescent nozzle is used to spray in the unfiltered area, the second fluorescent nozzle is used to spray at the mouth of each filter bag, and the fluorescence detector is tightly connected to the flower plate.

[0026] By adopting the above technical solution, the fluorescence detection component is composed of a first fluorescent nozzle, a second fluorescent nozzle and a fluorescent detector: the first fluorescent nozzle is fastened to the dust removal box and is used to spray fluorescent substances in the unfiltered area; the second fluorescent nozzle is fastened to the flower plate and sprays fluorescence to each filter bag opening in a directional manner; the fluorescent detector is fastened to the flower plate and is used to monitor the intensity and color change of the fluorescent signal to determine whether the filter bag or the leak prevention mechanism is damaged or there is an abnormal flow rate. In the work process, the first fluorescent nozzle first sprays fluorescence in the unfiltered area as a reference mark, and then the second fluorescent nozzle applies fluorescence to the filter bag opening, and the fluorescent detector observes the optical reaction after spraying; using the appearance characteristics of the fluorescent substance on the filter bag surface or the leaking seam area, once the filter bag leaks or the airflow is abnormal, the detector records the abnormal light signal intensity and color change, and transmits the information to the control system through the electrical connection of the detection mechanism. Finally, it is achieved that during the operation of the dust removal device, the filter bag damage or abnormal flow rate can be quickly and effectively discovered, and the safety and maintenance efficiency of the equipment can be improved.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention realizes the synchronous management of the folding seal of the filter bag and the dust residue by arranging the anti-leakage mechanism and the cleaning mechanism in the filter mechanism, and making the two fastened to the filter mechanism and electrically connected to the detection mechanism. Among them, the anti-leakage mechanism includes a folding component, an iris component and an anti-condensation component: the folding component realizes the folding of the filter bag according to the isosceles trapezoidal cross section to prevent dust leakage through small structures such as folding hinge rods, folding rings, electromagnetic blocks and magnetic blocks; the iris component is fastened to the flower plate to realize adjustable sealing when repairing or replacing the filter bag; the anti-condensation component adopts a cooling box, a heating box, a temperature control pipeline and a circulating pump, which are arranged circumferentially around the dust removal box and spirally wrapped around the dust inlet pipe and the lower end of the ash hopper, and can transport cold / hot media according to temperature changes to avoid bag sticking or dust leakage caused by condensation. The cleaning mechanism realizes the coordinated action of pulse blowing and mechanical cleaning through electromagnetic pulse valve, compressed air storage tank, venturi, electric slide rail, lifting hydraulic cylinder, cleaning brush, etc.: when the filter bag resistance or dust accumulation reaches the threshold, the electromagnetic pulse valve instantly releases compressed air and assists with mechanical dust removal by the cleaning brush, greatly improving the regeneration efficiency and leakage prevention effect of the filter bag.

[0029] The filter mechanism consists of a dust box, an ash hopper, a dust inlet pipe, a flower plate, a filter bag, an inspection door, a clean air outlet pipe, an ash discharge assembly, a sandwich plate, etc. The core is to use the fastening method of the flower plate and the filter bag to form a primary filter, and the ash hopper and the ash discharge assembly (including small structures such as a star-shaped air lock valve, a shear worm, a scraper, and an annular rack) realize secondary ash falling and directional dust discharge. The sandwich plate is made of rock wool or aluminum silicate fiber with a thickness of 200-250mm, which can control the temperature drop within 10℃ to avoid condensation or corrosion caused by the sudden drop in high-temperature flue gas treatment at 400 degrees. At the same time, the cooling box and the heating box in the anti-condensation component are arranged in a spiral temperature control pipeline at the lower end of the dust inlet pipe and the ash hopper. The circulating pump is used to flow the hot / cold medium, stabilize the temperature gradient inside the dust box and protect the life of the filter bag. Such multi-layer collaborative filtration and temperature regulation can take into account the dust capture efficiency and filter bag safety, and reduce the damage or condensation caused by temperature fluctuations.

[0030] In terms of the detection mechanism, the present invention incorporates a fluorescence detection component, a flow rate sensor and a temperature sensor into the filter mechanism: the fluorescence detection component consists of a first fluorescent nozzle, a second fluorescent nozzle and a fluorescence detector. The first fluorescent nozzle sprays fluorescence in the unfiltered area, and the second fluorescent nozzle sprays at each filter bag opening. The fluorescence detector is fastened to the flower plate, and accurately identifies filter bag damage or abnormal flow rate by detecting the intensity and color change of the fluorescence signal; the flow rate sensor continuously records the flue gas flow rate, and the temperature sensor monitors the temperature in the box. Once an over-limit or abnormal fluctuation occurs, the detection mechanism transmits the data to the control system through an electrical connection, providing the operator with an early warning or shutdown maintenance prompt. Compared with the prior art, this method of combining fluorescence detection with multi-parameter monitoring of flow rate and temperature can effectively prevent long-term dust leakage due to minor damage, and accurately evaluate the dust removal effect and the health status of the filter bag, realize active safety management and maintenance of the entire system, and significantly improve the stability and service life of the dust removal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the structure of the filtering mechanism of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the ash discharge assembly of the present invention;

[0034] Figure 4 This is a schematic diagram of the folding assembly structure of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of the anti-condensation component of the present invention;

[0036] Figure 6 This is a schematic diagram of the cleaning mechanism structure of the present invention;

[0037] Figure 7 This is a schematic diagram of the cleaning component structure of the present invention;

[0038] Figure 8 It is a schematic diagram of the structure of the fluorescence detection component of the present invention.

[0039] In the figure: 1. Filter mechanism; 11. Dust removal box; 12. Ash hopper; 13. Dust and gas inlet pipe; 14. Flower board; 15. Filter bag; 16. Inspection door; 17. Clean air outlet pipe; 18. Ash discharge assembly; 181. Star-shaped air lock valve; 182. Shear worm; 183. Scraper; 184. Ring rack; 185. Shear motor; 19. Sandwich plate; 2. Leakage prevention mechanism; 21. Folding assembly; 211. Folding hinge rod; 212. Folding ring; 213. Folding elastic member; 214. Fixed rod; 215. Sliding rod; 216. Electromagnetic block; 217. Magnetic block; 22. Iris Component; 23. Anti-condensation component; 231. Cooling box; 232. Heating box; 233. Temperature control pipe; 234. Circulation pump; 3. Cleaning mechanism; 31. Electromagnetic pulse valve; 32. Compressed air storage tank; 33. Venturi tube; 34. Cleaning component; 341. Electric slide rail; 342. Lifting hydraulic cylinder; 343. Cleaning brush; 344. Cleaning motor; 35. Fan; 4. Detection mechanism; 41. Fluorescence detection component; 411. First fluorescent nozzle; 412. Second fluorescent nozzle; 413. Fluorescence detector; 42. Flow rate sensor; 43. Temperature sensor. DETAILED DESCRIPTION

[0040] The following will be combined with 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 of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1 - Figure 8 As shown, the present invention provides a technical solution for a high temperature and corrosion resistant bag dust removal device for kiln tail:

[0042] The dust removal device includes a filtering mechanism 1, a leak-proof mechanism 2, a cleaning mechanism 3 and a detection mechanism 4. The leak-proof mechanism 2 and the filtering mechanism 1 are tightly connected, the cleaning mechanism 3 and the filtering mechanism 1 are tightly connected, and the detection mechanism 4 and the filtering mechanism 1 are tightly connected. The leak-proof mechanism 2, the cleaning mechanism 3 and the detection mechanism 4 are all located in the filtering mechanism 1. The filtering mechanism 1, the leak-proof mechanism 2 and the cleaning mechanism 3 are all electrically connected to the detection mechanism 4. The leak-proof mechanism 2 is used for folding the cloth bag of the dust removal device, the cleaning mechanism 3 is used for cleaning the residual dust in the filtering mechanism 1, and the detection mechanism 4 is used to detect the internal flow velocity of the filtering mechanism 1 and the damage of the leak-proof mechanism 2.

[0043] By adopting the above technical solution, the filtering mechanism 1 is fastened and electrically connected to the anti-leakage mechanism 2, the cleaning mechanism 3, and the detection mechanism 4, so that the entire dust removal device forms a compact integrated structure: the anti-leakage mechanism 2 is used to fold the bag and prevent dust leakage, the cleaning mechanism 3 cleans the residual dust inside in time after filtering, and the detection mechanism 4 monitors the internal flow rate and damage in real time. The workflow is first completed by the filtering mechanism 1 to complete the main filtration of the dust-containing gas, the anti-leakage mechanism 2 maintains the sealing in the bag operation link, the cleaning mechanism 3 regularly cleans the filtered dust, and the detection mechanism 4 timely feedbacks the status of the filter bag 15 and the abnormal flow rate through the electrical acquisition signal. It is to rely on the coordination of various mechanisms: the linkage between the anti-leakage mechanism 2 and the filtering mechanism 1 controls the safety of the bag and prevents condensation; the cleaning mechanism 3 cleans the dust in a periodic pulse or airflow mode; the detection mechanism 4 relies on sensing and fluorescence detection to ensure accurate monitoring of the filtration process, and finally achieves the effect of reducing emissions, ensuring dust removal efficiency and equipment safety.

[0044] Further, the filtering mechanism 1 includes a dust box 11, an ash hopper 12, a dust gas inlet pipe 13, a flower plate 14, a filter bag 15, an inspection door 16, a clean gas outlet pipe 17, an ash discharge assembly 18 and a sandwich plate 19, the dust box 11 and the ash hopper 12 are fastened together, the dust gas inlet pipe 13 and the dust box 11 are communicated, the flower plate 14 and the dust box 11 are fastened together, the filter bag 15 and the flower plate 14 are fastened together, the inspection door 16 and the dust box 11 are fastened together, the clean gas outlet pipe 17 and the dust box 11 are fastened together, and the dust box 11 is fastened together. The box 11 is connected, the clean air outlet pipe 17 is located above the dust gas inlet pipe 13, the ash discharge assembly 18 and the ash hopper 12 are tightly connected, the ash hopper 12 is located at the lower end of the dust removal box 11, the ash discharge assembly 18 is located at the lower end of the ash hopper 12, the filter bag 15 is made of glass fiber material on the outside and uses PTFE coating, the sandwich plate 19 is made of rock wool or aluminum silicate fiber, the thickness of the sandwich plate 19 is 200-250mm, and the sandwich plate 19 is used for the dust removal box 11 to ensure that the temperature drop is controlled within 10°C.

[0045] By adopting the above technical solution, the filtering mechanism 1 is composed of a dust box 11, an ash hopper 12, a dust gas inlet pipe 13, a flower plate 14, a filter bag 15, an inspection door 16, a clean gas outlet pipe 17, an ash discharge assembly 18 and a sandwich plate 19: the dust box 11 is fastened to the ash hopper 12 to form a main frame, and the dust gas inlet pipe 13 is connected to the dust box 11 to allow dust-containing gas to enter; the flower plate 14 is fastened to the dust box 11 to install the filter bag 15, and the filter bag 15 is made of glass fiber. The outer surface of the dust box 11 is covered with PTFE coating to enhance the temperature and chemical resistance; the inspection door 16 is tightly connected to the dust box 11 for maintenance; the clean air outlet pipe 17 is connected to the outlet above the dust box 11 to discharge the purified airflow; the ash discharge component 18 is tightly connected to the ash hopper 12 to facilitate the collection and discharge of accumulated ash; the sandwich panel 19 is made of rock wool or aluminum silicate fiber with a thickness of 200-250mm, surrounding the wall of the dust box 11 to control the temperature drop within 10°C. During the working process, the dust-laden airflow enters the dust removal box 11 from the dust air inlet pipe 13, is filtered by the filter bag 15, and the dust settles to the ash hopper 12; the filter bag 15 is stabilized and easy to replace through the flower plate 14, and the inspection door 16 is used for regular maintenance or observation of the internal conditions; the purified air is finally discharged from the clean air outlet pipe 17; the efficient capture of dust by the filter bag 15 and the thermal insulation effect of the sandwich plate 19 are utilized to ensure high filtration efficiency and thermal stability, and finally achieve efficient dust removal and temperature control effects on the airflow.

[0046] Furthermore, the ash discharge assembly 18 includes a star-shaped air lock valve 181, a shear worm 182, a scraper 183, an annular rack 184 and a shear motor 185. The star-shaped air lock valve 181 is fastened to the ash hopper 12, the shear motor 185 is fastened to the ash hopper 12, the shear motor 185 is transmission-connected to the annular rack 184, the scraper 183 is fastened to the annular rack 184, and the annular rack 184 is transmission-connected to the shear worm 182.

[0047] By adopting the above-mentioned technical solution, the ash discharge component 18 is composed of a star-shaped air lock valve 181, a shear worm 182, a scraper 183, an annular rack 184 and a shear motor 185: the star-shaped air lock valve 181 is tightly connected to the ash hopper 12, and is used to keep the internal airflow from leaking during ash discharge; the shear motor 185 is tightly connected to the ash hopper 12 and is connected through the annular rack 184. Under the drive of the motor, the annular rack 184 rotates to pull the scraper 183 and the shear worm 182; the scraper 183 is tightly connected to the annular rack 184, and is used to clean or scrape off the deposits at the bottom of the ash hopper 12; the linkage between the annular rack 184 and the shear worm 182 completes the crushing and discharge of the dust. During the working process, the dust is filtered by the filter bag 15 and then falls into the ash hopper 12. The star-shaped air lock valve 181 maintains the air lock state. The shear motor 185 drives the annular rack 184 to drive the scraper 183 to clean the dust and cooperate with the shear worm 182 to cut the agglomerated dust into pieces, and finally the dust is smoothly discharged out of the device. Relying on the combination of mechanical crushing, scraping and air lock sealing, continuous ash discharge is realized and external air backflow is prevented, achieving efficient dust removal and sealing effects.

[0048] Furthermore, the anti-leakage mechanism 2 includes a folding component 21, an iris component 22 and an anti-condensation component 23. The folding component 21 is fastened to the flower plate 14, the folding component 21 is transmission-connected to the filter bag 15, the folding component 21 is used for folding the filter bag 15, the cross-sections of the folding component 21 and the filter bag 15 are both isosceles trapezoids, the anti-condensation component 23 is fastened to the dust removal box 11, and the iris component 22 is fastened to the flower plate 14.

[0049] By adopting the above technical solution, the anti-leakage mechanism 2 is composed of a folding component 21, an iris component 22 and an anti-condensation component 23: the folding component 21 is fastened to the flower plate 14 and is transmission-connected to the filter bag 15, and is used to fold or unfold the filter bag 15 into an isosceles trapezoidal cross section; wherein the folding component 21 and the filter bag 15 are both designed to be isosceles trapezoidal in cross section to keep a close fit during movement; the anti-condensation component 23 is fastened to the dust removal box 11, and is used to prevent water vapor condensation in a high humidity or high temperature environment; the iris component 22 is fastened to the flower plate 14, and is used to adjustably seal the passage when repairing or replacing the filter bag 15. In the work process, when the filter bag 15 needs to be folded or unfolded, the folding component 21 moves in coordination with the transmission mechanism, so that the filter bag 15 is deformed into an isosceles trapezoidal shape, thereby reducing leakage and wind resistance; the anti-condensation component 23 prevents condensation by controlling the ambient temperature or adjusting the airflow; the iris component 22 is used for sealing adjustment at the flower plate 14 to cope with different working conditions. By relying on the mechanical control of the folding mechanism and the temperature / humidity regulation of the anti-condensation component 23, the folding and leakage prevention of the filter bag 15 and the effective suppression of water vapor condensation are achieved, thereby achieving the effect of improving the dust removal efficiency and the life of the equipment.

[0050] Furthermore, the folding assembly 21 includes a folding hinge 211, a folding ring 212, a folding elastic member 213, a fixed rod 214, a sliding rod 215, an electromagnetic block 216 and a magnetic block 217. The fixed rod 214 is fastened to the flower plate 14, the sliding rod 215 is slidably connected to the fixed rod 214, the electromagnetic block 216 is fastened to the fixed rod 214, the folding elastic member 213 is fastened to the electromagnetic block 216, the folding elastic member 213 is fastened to the magnetic block 217, the magnetic block 217 is fastened to the sliding rod 215, the electromagnetic block 216 and the magnetic block 217 are magnetically repelled from each other, the folding ring 212 is fastened to the filter bag 15, the folding ring 212 is slidably connected to the folding hinge 211, and the sliding rod 215 is transmission-connected to the folding ring 212.

[0051] By adopting the above technical solution, the folding assembly 21 is composed of a folding hinge rod 211, a folding ring 212, a folding elastic member 213, a fixed rod 214, a sliding rod 215, an electromagnetic block 216 and a magnetic block 217: the fixed rod 214 is fastened to the flower plate 14 as a supporting base point; the sliding rod 215 is slidably connected to the fixed rod 214 to provide an adjustable margin; the electromagnetic block 216 is fastened to the fixed rod 214 and fastened to the folding elastic member 213, and the folding The other end of the folded elastic member 213 is fastened to the magnetic block 217, and the magnetic block 217 is fixed to the sliding rod 215. The flexible push and pull of the sliding rod 215 is achieved through the repulsive transmission of the magnetic poles of the electromagnetic block 216 and the magnetic block 217; the folding ring 212 is fastened to the filter bag 15 to directly act on the surface of the filter bag 15, and is slidably connected to the folding hinge 211. The sliding rod 215 is transmission-connected to the folding ring 212, so that the filter bag 15 has a controllable storage space when opened or folded. During the working process, when it is necessary to fold the filter bag 15 to prevent leakage, the electromagnetic block 216 is energized to repel the magnetic block 217, pushing or retracting the folding ring 212 and the folding hinge 211, and the filter bag 15 moves with the folding ring 212 to achieve a tight folding of an isosceles trapezoidal cross-section; the electromagnetic repulsion is combined with the elastic support of the elastic part to provide automatic or semi-automatic folding adjustment for the filter bag 15, and ultimately reduce dust leakage caused by excessive vibration or irregular unfolding of the bag during high-pressure wind or back-blowing cleaning.

[0052] Furthermore, the anti-condensation component 23 includes a cooling box 231, a heating box 232, a temperature control pipe 233 and a circulating pump 234. The cooling box 231 is connected to the temperature control pipe 233, the heating box 232 is connected to the circulating pump 234, the circulating pump 234 is connected to the temperature control pipe 233, the temperature control pipe 233 is arranged circumferentially around the dust removal box 11, the temperature control pipe 233 is spirally arranged at the dust inlet pipe 13, and the temperature control pipe 233 is spirally arranged at the lower end of the ash hopper 12.

[0053] By adopting the above technical scheme, the anti-condensation component 23 is composed of a cooling box 231, a heating box 232, a temperature control pipe 233 and a circulation pump 234: the cooling box 231 is connected to the temperature control pipe 233, and is used for local cooling when the high-temperature flue gas of 400 degrees enters the treatment; the heating box 232 is connected to the circulation pump 234, and the circulation pump 234 promotes the heat medium or the refrigerant to circulate in the temperature control pipe 233; the temperature control pipe 233 is distributed circumferentially around the dust removal box 11 and is spirally wrapped around the dust inlet pipe 13 and the lower end of the ash hopper 12, and can perform heating or cooling regulation in a local or overall range to prevent condensation or excessive temperature. During the working process, the cooling box 231 and the heating box 232 form a closed-loop control with the pipeline through the circulating pump 234, and automatically switch the delivery direction and flow rate of the hot medium or the cold medium according to the real-time temperature requirements; through the hot and cold switching and the surrounding arrangement of the pipeline partitions, the dust removal box 11 can obtain a suitable temperature at different parts, and the adverse effects of water vapor condensation on the filter bag 15 or dust emissions are prevented, ultimately ensuring the dust removal efficiency and equipment stability.

[0054] Furthermore, the cleaning mechanism 3 includes an electromagnetic pulse valve 31, a compressed air storage tank 32, a venturi 33, a cleaning component 34 and a fan 35. The electromagnetic pulse valve 31 is tightly connected to the dust removal box 11, the compressed air storage tank 32 is connected to the electromagnetic pulse valve 31, the electromagnetic pulse valve 31 is connected to the venturi 33, the cleaning component 34 is tightly connected to the dust removal box 11, and the fan 35 is tightly connected to the dust removal box 11. The fan 35 is used to control the flow rate of the clean air outlet pipe 17.

[0055] By adopting the above technical scheme, the cleaning mechanism 3 is composed of an electromagnetic pulse valve 31, a compressed air storage tank 32, a venturi 33, a cleaning component 34 and a fan 35: the electromagnetic pulse valve 31 is fastened to the dust removal box 11, and is used to control the release of compressed air during pulse blowing; the compressed air storage tank 32 is connected to the electromagnetic pulse valve 31 to provide an air source for blowing; after the electromagnetic pulse valve 31 and the venturi 33 are connected, the airflow is accelerated and introduced into the top of the filter bag 15 at the moment of blowing; the cleaning component 34 is fastened to the dust removal box 11, and is used to further assist in cleaning the dust on the surface of the filter bag 15; the fan 35 is fastened to the dust removal box 11, and is used to adjust or control the outlet flow rate at the clean air outlet pipe 17. During the working process, when the dust accumulation on the filter bag 15 is too thick or the resistance increases, the electromagnetic pulse valve 31 opens, and high-pressure air is sprayed into the filter bag 15 through the venturi 33, forming a reverse impact and shaking off the attached dust; the cleaning component 34 is used for additional cleaning such as brushing or secondary air sweeping; relying on pulse airflow and mechanical auxiliary means, the filter bag 15 is periodically cleaned and a low resistance is maintained, thereby improving the filtration efficiency and extending the life of the filter bag 15.

[0056] Furthermore, the cleaning component 34 includes an electric slide rail 341, a lifting hydraulic cylinder 342, a cleaning brush 343 and a cleaning motor 344, the lifting hydraulic cylinder 342 and the electric slide rail 341 are slidingly connected, the lifting hydraulic cylinder 342 and the cleaning motor 344 are transmission connected, and the cleaning motor 344 and the cleaning brush 343 are transmission connected.

[0057] By adopting the above technical solution, the cleaning component 34 is composed of an electric slide rail 341, a lifting hydraulic cylinder 342, a cleaning brush 343 and a cleaning motor 344: the electric slide rail 341 and the lifting hydraulic cylinder 342 are slidably connected to facilitate moving and cleaning at multiple positions inside the dust removal box 11; the lifting hydraulic cylinder 342 is transmission-connected to the cleaning motor 344, and the up and down or angle adjustment of the cleaning brush 343 is achieved by hydraulic means; the cleaning motor 344 is transmission-connected to the cleaning brush 343, driving the bristles to rotate or vibrate, thereby actively removing residual dust on the surface of the filter bag 15. During the working process, under the command of the electric slide rail 341, the cleaning component moves to the designated position of the filter bag 15, and the lifting hydraulic cylinder 342 cooperates with the cleaning motor 344 to push the cleaning brush 343 close to the filter bag 15 to achieve mechanical brushing or vibration; it is to combine electric drive with hydraulic thrust, and use the flexible arrangement of the slide rail to accurately and efficiently remove the dust accumulated on the surface of each filter bag 15, and finally achieve the regeneration maintenance of the filter bag 15 by the cleaning mechanism 3, improve the filtering effect and extend the service life of the filter bag 15.

[0058] Furthermore, the detection mechanism 4 includes a fluorescence detection component 41, a flow rate sensor 42 and a temperature sensor 43. The fluorescence detection component 41 is fastened to the dust removal box 11, the flow rate sensor 42 is fastened to the dust removal box 11, and the temperature sensor 43 is fastened to the dust removal box 11.

[0059] By adopting the above technical solution, the detection mechanism 4 is composed of a fluorescent detection component 41, a flow rate sensor 42, and a temperature sensor 43: the fluorescent detection component 41 is tightly connected to the dust removal box 11, and is used to detect the damage of the filter bag 15 or the leakage prevention mechanism 2; the flow rate sensor 42 is tightly connected to the dust removal box 11, and is used to monitor the airflow velocity inside the dust removal box 11 or between the filter bags 15 in real time; the temperature sensor 43 is tightly connected to the dust removal box 11, and is used to feedback the current internal temperature. In the work process, when the dust-laden airflow passes through the filter bag 15 or performs dust cleaning and leakage prevention operations, the detection mechanism 4 captures the airflow velocity and temperature changes at any time. Once an over-limit or abnormal fluctuation occurs, an alarm is issued to the control system through an electrical connection; based on the sensor, multi-parameter monitoring of the flow rate, temperature, and fluorescent signal (if there is damage or dust leakage) is performed to ensure the safe and efficient operation of the whole machine and timely detection of faults.

[0060] Furthermore, the fluorescence detection component 41 includes a first fluorescent nozzle 411, a second fluorescent nozzle 412, and a fluorescence detector 413. The fluorescence detector 413 is used to detect the intensity and color change of the fluorescence signal. The first fluorescent nozzle 411 is fastened to the dust removal box 11, and the second fluorescent nozzle 412 is fastened to the flower plate 14. The first fluorescent nozzle 411 is used to spray in the unfiltered area, and the second fluorescent nozzle 412 is used to spray at the mouth of each filter bag 15. The fluorescence detector 413 is fastened to the flower plate 14.

[0061] By adopting the above technical solution, the fluorescence detection component 41 is composed of a first fluorescent nozzle 411, a second fluorescent nozzle 412 and a fluorescent detector 413: the first fluorescent nozzle 411 is fastened to the dust removal box 11, and is used to spray fluorescent substances in the unfiltered area; the second fluorescent nozzle 412 is fastened to the flower plate 14, and sprays fluorescence to each filter bag 15 port in a directional manner; the fluorescent detector 413 is fastened to the flower plate 14, and is used to monitor the intensity and color change of the fluorescent signal to determine whether the filter bag 15 or the leak prevention mechanism 2 is damaged or there is an abnormal flow rate. In the work process, the first fluorescent nozzle 411 first sprays fluorescence in the unfiltered area as a reference mark, and then the second fluorescent nozzle 412 applies fluorescence to the filter bag 15 port, and the fluorescent detector 413 observes the optical reaction after spraying; using the appearance characteristics of the fluorescent substance on the surface of the filter bag 15 or the leaking seam area, once the filter bag 15 leaks or the airflow is abnormal, the detector records the abnormal light signal intensity and color change, and transmits the information to the control system through the electrical connection of the detection mechanism 4. Ultimately, the damage of the filter bag 15 or abnormal flow rate can be quickly and effectively discovered during the operation of the dust removal device, thereby improving the safety and maintenance efficiency of the equipment.

[0062] Working principle of the present invention:

[0063] The dust-laden gas enters the dust removal box 11 through the dust inlet pipe 13, and the dust is settled in the ash hopper 12 after being filtered by the filter bag 15. The purified air is discharged from the clean air outlet pipe 17, which mainly relies on the efficient capture of the filter bag 15 and the heat preservation and heat insulation of the sandwich plate 19. The effect achieved is that the high-temperature dust-laden airflow realizes efficient dust removal under an environment where the temperature remains relatively stable. At the same time, the dust is concentrated in the ash hopper 12 and discharged by the ash discharge component 18. After being filtered by the filter bag 15, the dust settles at the bottom of the ash hopper 12. The shearing motor 185 is started and drives the scraper 183 to clean the dust through the annular rack 184, and combines with the shearing worm 182 to cut or break the dust into pieces, and then discharges it from the star-shaped air lock valve 181. Through mechanical crushing and air lock sealing, the effect achieved is achieved. The result is to discharge dust continuously and evenly without stopping the machine, and avoid backflow of external airflow or ash leakage. Under the conditions of starting up or cleaning, the folding component 21 folds or unfolds the filter bag 15 with an isosceles trapezoidal cross-section, and the iris component 22 assists in sealing or maintenance operations. The anti-condensation component 23 timely intervenes in the flue gas temperature through the temperature control pipe 233 (described later), and relies on the microstructures such as the folding hinge 211, the sliding rod 215 and the electromagnetic repulsion to realize the deformation of the filter bag 15. At the same time, the surface temperature of the dust removal box 11 is adjusted by the cooling box 231, the heating box 232, etc., so that the dust leakage caused by loosening or damage of the filter bag 15 is reduced on the one hand, and condensation caused by humid and hot flue gas is prevented from causing the filter bag 15 to stick to the bag on the other hand. The rod 211 and the folding ring 212 form a movable connection structure. The sliding between the sliding rod 215 and the fixed rod 214 causes the folding ring 212 to drive the filter bag 15 to fold or unfold; the electromagnetic block 216 and the magnetic block 217 drive or buffer the folding action in a magnetic pole repulsion manner, and the folding elastic member 213 provides elastic return and shock absorption. The automatic or semi-automatic adjustment of the folding process of the filter bag 15 is achieved by relying on magnetic repulsion and elastic support. The effect achieved is that the volume of the filter bag 15 can be reduced and damaged during cleaning or shutdown for maintenance, the wind resistance can be reduced and a good seal can be maintained. After the filter bag 15 has been used for a period of time, the electromagnetic pulse valve 31 is opened to release the compressed air in the air storage tank in the form of pulses, and the compressed air is accelerated by the venturi 33 and impacts the filter bag. 15 surface, the attached dust will be peeled off; the cleaning component 34 is responsible for the mechanical coordination operation; the fan 35 is located in the clean air outlet pipe 17, which is used to adjust or control the outlet flow rate, the first fluorescent nozzle sprays fluorescent material in the unfiltered area, and the second fluorescent nozzle 412 sprays directional spraying at the filter bag 15 mouth; the fluorescent detector 413 is fastened to the flower plate 14 to capture the light signal intensity and color changes, and through the recognition of optical characteristics, once the filter bag 15 or the leak-proof mechanism 2 is damaged or the flow rate is abnormal, the fluorescent detector 413 senses a significant signal change; the effect achieved is to achieve real-time and accurate monitoring of the inside of the dust removal device, especially the filter bag 15 area, to detect damage or blockage faults in time, and to improve the overall safety and operation efficiency of the device.

[0064] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. The high temperature and corrosion resistant bag dust removal device for the kiln tail is characterized by: The dust removal device comprises a filtering mechanism (1), a leak prevention mechanism (2), a cleaning mechanism (3) and a detection mechanism (4); the leak prevention mechanism (2) and the filtering mechanism (1) are tightly connected; the cleaning mechanism (3) and the filtering mechanism (1) are tightly connected; the detection mechanism (4) and the filtering mechanism (1) are tightly connected; the leak prevention mechanism (2), the cleaning mechanism (3) and the detection mechanism (4) are all located inside the filtering mechanism (1); the filtering mechanism (1), the leak prevention mechanism (2) and the cleaning mechanism (3) are all electrically connected to the detection mechanism (4); the leak prevention mechanism (2) is used for folding the cloth bag of the dust removal device; the cleaning mechanism (3) is used for cleaning the residual dust in the filtering mechanism (1); and the detection mechanism (4) is used for detecting the internal flow velocity of the filtering mechanism (1) and the damage of the leak prevention mechanism (2).

2. The high temperature and corrosion resistant bag dust removal device for kiln tail according to claim 1 is characterized in that: The filtering mechanism (1) comprises a dust removal box (11), an ash hopper (12), a dust gas inlet pipe (13), a flower plate (14), a filter bag (15), an inspection door (16), a clean gas outlet pipe (17), an ash discharge assembly (18) and a sandwich plate (19); the dust removal box (11) and the ash hopper (12) are tightly connected, the dust gas inlet pipe (13) and the dust removal box (11) are communicated, the flower plate (14) and the dust removal box (11) are tightly connected, the filter bag (15) and the flower plate (14) are tightly connected, the inspection door (16) and the dust removal box (11) are tightly connected, and the clean gas outlet pipe (17) is connected to the dust removal box (11). The dust collecting box (11) is connected to the clean air outlet pipe (17), the clean air outlet pipe (17) is located above the dust air inlet pipe (13), the ash discharge assembly (18) and the ash hopper (12) are tightly connected, the ash hopper (12) is located at the lower end of the dust collecting box (11), the ash discharge assembly (18) is located at the lower end of the ash hopper (12), the filter bag (15) is made of glass fiber material on the outside and uses PTFE coating, the sandwich plate (19) is made of rock wool or aluminum silicate fiber, the thickness of the sandwich plate (19) is 200-250 mm, and the sandwich plate (19) is used for the dust collecting box (11) to ensure that the temperature drop is controlled within 10°C.

3. The high temperature and corrosion resistant bag dust removal device for kiln tail according to claim 2 is characterized in that: The ash discharge assembly (18) comprises a star-shaped air lock valve (181), a shearing worm (182), a scraper (183), an annular rack (184) and a shearing motor (185); the star-shaped air lock valve (181) is fixedly connected to the ash hopper (12); the shearing motor (185) is fixedly connected to the ash hopper (12); the shearing motor (185) is transmission-connected to the annular rack (184); the scraper (183) is fixedly connected to the annular rack (184); and the annular rack (184) is transmission-connected to the shearing worm (182).

4. The high temperature and corrosion resistant bag dust removal device for kiln tail according to claim 3 is characterized in that: The anti-leakage mechanism (2) comprises a folding component (21), an iris component (22) and an anti-condensation component (23); the folding component (21) is tightly connected to the flower plate (14); the folding component (21) is transmission-connected to the filter bag (15); the folding component (21) is used for folding the filter bag (15); the cross-sections of the folding component (21) and the filter bag (15) are both isosceles trapezoids; the anti-condensation component (23) is tightly connected to the dust removal box (11); and the iris component (22) is tightly connected to the flower plate (14).

5. The high temperature and corrosion resistant bag dust removal device for kiln tail according to claim 4 is characterized in that: The folding assembly (21) comprises a folding hinge rod (211), a folding ring (212), a folding elastic member (213), a fixed rod (214), a sliding rod (215), an electromagnetic block (216) and a magnetic block (217); the fixed rod (214) and the flower plate (14) are tightly connected; the sliding rod (215) and the fixed rod (214) are slidably connected; the electromagnetic block (216) and the fixed rod (214) are tightly connected; the folding elastic member (213) The folding elastic member (213) is tightly connected to the magnetic block (217), the magnetic block (217) is tightly connected to the sliding rod (215), the magnetic poles of the electromagnetic block (216) and the magnetic block (217) are repelled from each other, the folding ring (212) is tightly connected to the filter bag (15), the folding ring (212) is slidably connected to the folding hinge (211), and the sliding rod (215) is transmission-connected to the folding ring (212).

6. The high temperature and corrosion resistant bag dust removal device for kiln tail according to claim 5 is characterized in that: The anti-condensation component (23) comprises a cooling box (231), a heating box (232), a temperature control pipe (233) and a circulation pump (234); the cooling box (231) and the temperature control pipe (233) are connected; the heating box (232) and the circulation pump (234) are connected; the circulation pump (234) and the temperature control pipe (233) are connected; the temperature control pipe (233) is arranged circumferentially around the dust removal box (11); the temperature control pipe (233) is arranged in a spiral around the dust inlet pipe (13); and the temperature control pipe (233) is arranged in a spiral around the lower end of the ash hopper (12).

7. The high temperature and corrosion resistant bag dust removal device for kiln tail according to claim 6 is characterized in that: The cleaning mechanism (3) comprises an electromagnetic pulse valve (31), a compressed air storage tank (32), a venturi (33), a cleaning component (34) and a fan (35); the electromagnetic pulse valve (31) is tightly connected to the dust removal box (11); the compressed air storage tank (32) is connected to the electromagnetic pulse valve (31); the electromagnetic pulse valve (31) is connected to the venturi (33); the cleaning component (34) is tightly connected to the dust removal box (11); the fan (35) is tightly connected to the dust removal box (11); and the fan (35) is used to control the flow rate of the clean air outlet pipe (17).

8. The high temperature and corrosion resistant bag dust removal device for kiln tail according to claim 7 is characterized in that: The cleaning component (34) comprises an electric slide rail (341), a lifting hydraulic cylinder (342), a cleaning brush (343) and a cleaning motor (344); the lifting hydraulic cylinder (342) and the electric slide rail (341) are slidably connected, the lifting hydraulic cylinder (342) and the cleaning motor (344) are transmission-connected, and the cleaning motor (344) and the cleaning brush (343) are transmission-connected.

9. The high temperature and corrosion resistant bag dust removal device for kiln tail according to claim 8, characterized in that: The detection mechanism (4) comprises a fluorescence detection component (41), a flow rate sensor (42) and a temperature sensor (43); the fluorescence detection component (41) is tightly connected to the dust removal box (11); the flow rate sensor (42) is tightly connected to the dust removal box (11); and the temperature sensor (43) is tightly connected to the dust removal box (11).

10. The high temperature and corrosion resistant bag dust removal device for kiln tail according to claim 9, characterized in that: The fluorescence detection component (41) comprises a first fluorescent nozzle (411), a second fluorescent nozzle (412), and a fluorescence detector (413); the fluorescence detector (413) is used to detect the intensity and color change of the fluorescence signal; the first fluorescent nozzle (411) is tightly connected to the dust removal box (11); the second fluorescent nozzle (412) is tightly connected to the flower plate (14); the first fluorescent nozzle (411) is used to spray in the unfiltered area; the second fluorescent nozzle (412) is used to spray at the mouth of each filter bag (15); and the fluorescence detector (413) is tightly connected to the flower plate (14).

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