Novel negative pressure dust collection equipment suitable for ash silo and slag bin of thermal power plant

Abstract

The invention discloses novel negative pressure dust collection equipment suitable for an ash silo and a slag bin of a thermal power plant, and relates to the technical field of thermal power plant dust collection, the novel negative pressure dust collection equipment comprises a treatment barrel, the outer wall of the treatment barrel is fixedly connected with a support, the upper side of the treatment barrel is fixedly connected with an exhaust pipe, and the lower side of the treatment barrel is fixedly connected with a blow-off pipe; the outer wall of the sewage discharge pipe is fixedly connected with a sliding rail, the lower side of the sliding rail is slidably connected with a sealing cover, the upper side of the sealing cover is in contact with the lower side of the sewage discharge pipe, the left part of the side wall of the treatment barrel is fixedly connected with a fixed pipe, and the inner wall of the fixed pipe is fixedly connected with a water inlet pipe. And water flow is sprayed into the treatment barrel after being atomized by the atomizing spray head, so that pre-wetting of the inner wall and retention of internal moisture are realized, and the device has the characteristics that the practicability is high, and the flushing water quantity can be reduced when dust with relatively high humidity is collected.

Description

Technical Field

[0001] The present invention relates to the technical field of dust collection in thermal power plants, and particularly to a new type of negative pressure dust collection device suitable for ash silos and slag bins in thermal power plants. Background Art

[0002] In the ash silos and slag bins of thermal power plants, a large amount of dust and particulate matter are generated after the boiler burns. These dusts not only pollute the environment, but may also have an adverse impact on the operation of equipment and the health of personnel.

[0003] Therefore, it is usually necessary to treat the dust through a dust collector and only then can it be discharged into the atmosphere after meeting the environmental protection standards. At present, common dust collection devices include bag filters, electrostatic precipitators, wet dust collectors, etc.

[0004] Among them, the bag filter can effectively capture dust in a relatively dry environment due to its simple structure and convenient maintenance, meeting the environmental protection requirements. However, in a workshop with high humidity or when treating high-humidity dust-containing gases, the bag filter is prone to clogging of the filter bags due to dust adhesion on the surface of the filter bags, reducing the dust collection efficiency and even affecting the normal operation of the equipment.

[0005] In addition, although the existing wet dust collectors can treat high-humidity dust-containing gases, they have problems such as large water resource consumption and complex sewage discharge treatment. Chinese Patent with publication number CN113413711B discloses a new type of negative pressure dust collection device suitable for ash silos and slag bins in thermal power plants. This device can evenly distribute the dust by means of the provided mist separation plate when the dust enters the spray dust collection box, improving the dust collection effect. Moreover, a number of evenly spaced mist separation balls are installed between each layer of spray nozzles and the mist separation plate. When the dust enters the spray dust collection box, it is mixed by the mist separation balls, and the dust adhered to the spheres is washed down by the water sprayed from the nozzles, thus completing the dust collection and cleaning operation. However, this method has a large water consumption and is difficult to achieve the goal of efficient and energy-saving dust treatment.

[0006] Therefore, it is very necessary to design a new type of negative pressure dust collection device suitable for ash silos and slag bins in thermal power plants with strong practicability and capable of reducing the flushing water volume when collecting dust with high humidity. Summary of the Invention

[0007] The purpose of the present invention is to provide a new type of negative pressure dust collection device suitable for ash silos and slag bins in thermal power plants to solve the problems raised in the above background art.

[0008] To solve the above technical problems, the present invention provides the following technical solution: a new type of negative pressure dust collection device suitable for the ash silo and slag bunker of a thermal power plant, including a treatment barrel, the outer wall of the treatment barrel is fixedly connected with a support, the upper side of the treatment barrel is fixedly connected with an exhaust pipe, the lower side of the treatment barrel is fixedly connected with a sewage discharge pipe, the outer wall of the sewage discharge pipe is fixedly connected with a slide rail, the lower side of the slide rail is slidably connected with a cover, the upper side of the cover is in contact with the lower side of the sewage discharge pipe, the left part of the side wall of the treatment barrel is fixedly connected with a fixed pipe, the inner wall of the fixed pipe is fixedly connected with a water inlet pipe, one side of the water inlet pipe extends to the upper side inside the treatment barrel, and a plurality of atomizing nozzles are fixedly connected to the lower surface of the end of the water inlet pipe located inside the treatment barrel, the lower side wall of the treatment barrel is fixedly connected with an air inlet box, the air inlet box is provided with an air inlet on the side outside the treatment barrel, and a plurality of exhaust slits are provided on the side inside the treatment barrel, and a treatment mechanism is arranged inside the treatment barrel.

[0009] According to the above technical solution, the lower side of the treatment barrel is conical, and the front and rear sides of the treatment barrel gradually converge towards the middle from bottom to top. The end of the air inlet box located inside the treatment barrel is fixedly connected with the inner wall of the treatment barrel, and the exhaust slits provided on the air inlet box face the inner wall of the treatment barrel.

[0010] According to the above technical solution, the treatment mechanism includes a floor footing, the lower side of the floor footing is fixedly connected with the lower side of the inner wall of the treatment barrel, the inner wall of the floor footing is rotatably connected with a rotating rod through a bearing, a fixing frame is fixedly connected to the outer wall of the upper side of the rotating rod, fixing rods are fixedly connected to both the left and right parts of the fixing frame, a resistance plate is fixedly connected to the end of the fixing rod away from the rotating rod, the outer wall of the rotating rod is rotatably connected with a waterproof shell through a bearing, a fixing foot is fixedly connected to the lower side of the waterproof shell, the lower end of the fixing foot is fixedly connected with the outer wall of the floor footing, a magnet is fixedly connected to the inner wall of the waterproof shell, a coil is arranged inside the magnet, the middle outer wall of the coil is fixedly connected with the inner wall of the rotating rod, both ends of the coil are respectively fixedly connected with two conductive plates, conductive sliders are in contact with the outer walls of both conductive plates, a connecting rod is fixedly connected to the outer wall of the conductive slider, the conductive slider is fixedly connected to the upper side of the inner wall of the waterproof shell through the connecting rod, a humidifying mechanism is arranged on the upper side of the fixing frame, and a first electrode and a second electrode are fixedly connected to the lower side of the outer wall of the rotating rod.

[0011] According to the above technical solution, a plurality of magnets are arranged outside the coil, the sides of adjacent two magnets facing the coil are opposite magnetic poles, and the two conductive sliders are respectively electrically connected to the second electrode and the first electrode, and the rotation paths of the two conductive plates are the same.

[0012] According to the above technical solution, the second electrode and the first electrode are located at the lower part of the side wall of the rotating rod, and the rotating rod is located above the sewage pipe, and the second electrode and the first electrode are inclined.

[0013] According to the above technical solution, the humidifying mechanism includes a collecting channel, which is a channel opened inside the rotating rod, and an air inlet is opened on the lower side of the rotating rod. The air inlet communicates the outside of the rotating rod with the inside of the collecting channel. A guide plate is fixedly connected to the outer wall of the rotating rod at the upper part of the air inlet. A igniter is fixedly connected to the upper side of the fixed frame, and a collecting plate is fixedly connected to the outer wall of the fixed rod.

[0014] According to the above technical solution, the air inlet is located above the second electrode and the first electrode, and the guide plate is a plate-like structure with a raised middle and a downward-tilted edge. The diameter of the guide plate is greater than the front and rear side lengths of the second electrode and the first electrode. The collecting plate is a plate-like structure with a raised middle, and the collecting plate is located above the rotating rod.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: By providing a water inlet pipe and its connected water supply device, water is supplied into the treatment barrel. The water flow is atomized by the atomizing nozzle and sprayed into the treatment barrel to achieve pre-wetting of the inner wall and retention of internal moisture. At the same time, the dust-containing air flow enters the treatment barrel through the air inlet box and forms a vortex along the tangential direction of the inner wall. Dust settles in the vortex, and the escaping dust is captured by continuously spraying water mist through the atomizing nozzle, realizing efficient dust removal and reducing water resource waste;

[0016] By providing a treatment mechanism and its internal rotating structure, the water flow rotation is used to push the resistance plate and the fixed rod to drive the rotating rod to rotate, so that the coil rotates in the magnet to generate induced charge. Through the electrical connection relationship between the conductive plate, the conductive slider, the second electrode and the first electrode, an electrolytic water reaction is generated between the second electrode and the first electrode, and bubbles rise up, reducing the pressure and density at the center of the water flow vortex and promoting the collection of impurities towards the middle for easy collection;

[0017] By providing the second electrode and the first electrode and their inclined arrangement structure, the electric coagulation phenomenon of dust in the water flow is generated by the electric field effect, enhancing the impurity aggregation effect and reducing the turbidity of the outer water flow. At the same time, through the synergistic effect of the rotating water flow and the electrolytic water reaction, the impurities are further pushed towards the middle and compressed downward, making the impurities more concentrated, facilitating subsequent treatment and reducing water resource waste;

[0018] By providing a humidifying mechanism and its internal collection channel, air inlet hole, guide plate, igniter and collection plate structure, the hydrogen-oxygen gas generated by electrolyzing water is introduced into the collection channel through the air inlet hole and accumulates below the collection plate. The hydrogen-oxygen gas is ignited and burned by the igniter to heat the inside of the treatment barrel and accelerate the evaporation of the moisture on the upper side of the collection plate into water vapor, making it easier for the dust to be captured by the moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0020] Figure 1 is a schematic diagram of the upper-side structure of the present invention;

[0021] Figure 2 is a schematic diagram of the lower-side structure of the present invention;

[0022] Figure 3 is a schematic diagram of the internal structure of the treatment barrel of the present invention;

[0023] Figure 4 is a schematic diagram of the air inlet box structure of the present invention;

[0024] Figure 5 is a schematic diagram of the treatment mechanism structure of the present invention;

[0025] Figure 6 is a schematic diagram of the internal structure of the waterproof shell of the present invention;

[0026] Figure 7 is the present invention Figure 6 an enlarged schematic diagram of A therein;

[0027] Figure 8 is the present invention Figure 6 an enlarged schematic diagram of B therein;

[0028] In the figures: 1, treatment barrel; 2, bracket; 3, exhaust pipe; 4, sewage pipe; 5, slide rail; 6, cover; 7, fixed pipe; 8, water inlet pipe; 9, air inlet box; 10, atomizing nozzle; 11, treatment mechanism; 12, exhaust slit; 101, floor foot; 102, rotating rod; 103, fixed frame; 104, fixed rod; 105, resistance plate; 106, waterproof shell; 107, coil; 108, conductive plate; 109, magnet; 110, connecting rod; 111, conductive slider; 112, humidifying mechanism; 113, fixed foot; 114, first electrode; 115, second electrode; 201, collection channel; 202, air inlet hole; 203, guide plate; 204, igniter; 205, collection plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-8 , the present invention provides a technical solution: a new type of negative pressure dust collection device suitable for ash silos and slag bins in thermal power plants, including a treatment barrel 1. A bracket 2 is fixedly connected to the outer wall of the treatment barrel 1. An exhaust pipe 3 is fixedly connected to the upper side of the treatment barrel 1. A sewage discharge pipe 4 is fixedly connected to the lower side of the treatment barrel 1. A slide rail 5 is fixedly connected to the outer wall of the sewage discharge pipe 4. A sealing cover 6 is slidably connected to the lower side of the slide rail 5. The upper side of the sealing cover 6 is in contact with the lower side of the sewage discharge pipe 4. A fixed pipe 7 is fixedly connected to the left part of the side wall of the treatment barrel 1. A water inlet pipe 8 is fixedly connected to the inner wall of the fixed pipe 7. One side of the water inlet pipe 8 extends to the upper side inside the treatment barrel 1, and a plurality of atomizing nozzles 10 are fixedly connected to the lower surface of the end of the water inlet pipe 8 located inside the treatment barrel 1. An air inlet box 9 is fixedly connected to the lower side wall of the treatment barrel 1. An air inlet is provided on the side of the air inlet box 9 located outside the treatment barrel 1. A plurality of exhaust slits 12 are provided on the side of the air inlet box 9 located inside the treatment barrel 1. A treatment mechanism 11 is arranged inside the treatment barrel 1. The lower side of the treatment barrel 1 is conical, and the front and rear sides of the treatment barrel 1 gradually converge towards the middle from bottom to top. One end of the air inlet box 9 located inside the treatment barrel 1 is fixedly connected to the inner wall of the treatment barrel 1, and the exhaust slits 12 provided on the air inlet box 9 face the inner wall of the treatment barrel 1;

[0031] Before use, connect the water inlet pipe 8 to a water supply device, supply water into the interior of the treatment barrel 1 through the water inlet pipe 8. The water flow is atomized by the atomizing nozzles 10 and sprayed into the interior space of the treatment barrel 1 to pre-wet the inner wall of the treatment barrel 1, and make the water retained inside the treatment barrel 1 submerge the air inlet box 9. Subsequently, the airflow containing over-wet dust is sent into the interior of the air inlet box 9 by a negative pressure air extractor, and then sprayed into the interior of the treatment barrel 1 through the interior of the air inlet box 9 and the exhaust slits 12. Since the airflow extends along the inner wall of the treatment barrel 1 tangentially, the remaining kinetic energy of the airflow will drive the water inside the treatment barrel 1 to form a vortex, and then make the airflow entering the interior of the treatment barrel 1 form dispersed bubbles in the vortex, so that the dust in the bubbles settles inside the water. Subsequently, the airflow rises, and at the same time, the atomizing nozzles 10 continuously spray water mist downward, which will make the escaping dust be washed back into the water flow. The cleaned airflow is discharged through the exhaust pipe 3, thereby avoiding the waste of water source caused by a large amount of water flow flushing the airflow;

[0032] After the dust content in the water body inside the treatment barrel 1 is too high, the sealing cover 6 can be moved to discharge part of the sewage inside the treatment barrel 1, and the interior of the treatment barrel 1 can be replenished with clean water in time;

[0033] The processing mechanism 11 includes a floor foot 101. The lower side of the floor foot 101 is fixedly connected to the lower side of the inner wall of the processing barrel 1. The inner wall of the floor foot 101 is rotatably connected to a rotating rod 102 through a bearing. The upper outer wall of the rotating rod 102 is fixedly connected to a fixing frame 103. Fixing rods 104 are fixedly connected to both the left and right parts of the fixing frame 103. One end of the fixing rod 104 away from the rotating rod 102 is fixedly connected to a resistance plate 105. The outer wall of the rotating rod 102 is rotatably connected to a waterproof shell 106 through a bearing. The lower side of the waterproof shell 106 is fixedly connected to a fixing foot 113. The lower end of the fixing foot 113 is fixedly connected to the outer wall of the floor foot 101. A magnet 109 is fixedly connected to the inner wall of the waterproof shell 106. A coil 107 is arranged inside the magnet 109. The middle outer wall of the coil 107 is fixedly connected to the inner wall of the rotating rod 102. Two conductive plates 108 are respectively fixedly connected to both ends of the coil 107. Conductive sliders 111 are in contact with the outer walls of both conductive plates 108. The outer wall of the conductive slider 111 is fixedly connected to a connecting rod 110. The conductive slider 111 is fixedly connected to the upper side of the inner wall of the waterproof shell 106 through the connecting rod 110. A humidifying mechanism 112 is arranged on the upper side of the fixing frame 103. A first electrode 114 and a second electrode 115 are fixedly connected to the lower side of the outer wall of the rotating rod 102. A plurality of magnets 109 are arranged outside the coil 107. The sides of adjacent two magnets 109 facing the coil 107 are opposite magnetic poles. And the two conductive sliders 111 are respectively electrically connected to the second electrode 115 and the first electrode 114. The rotation paths of the two conductive plates 108 are the same. The second electrode 115 and the first electrode 114 are located at the lower part of the side wall of the rotating rod 102. And the rotating rod 102 is located above the sewage pipe 4. The second electrode 115 and the first electrode 114 are inclined;

[0034] During the process of the airflow traveling along the inner wall of the processing barrel 1, it will cause the rotation of the water flow. The rotating water flow will push the resistance plate 105 and the fixing rod 104 to rotate. Furthermore, the fixing rod 104 drives the fixing frame 103 and the rotating rod 102 to rotate. The rotating rod 102 drives the coil 107 to rotate inside a plurality of magnets 109. Furthermore, the coil 107 generates induced electricity. Furthermore, through the conductive plates 108, the conductive sliders 111 and the electrical connection relationship between the two conductive sliders 111 and the second electrode 115 and the first electrode 114, an electrolyzed water reaction is generated between the second electrode 115 and the first electrode 114. Furthermore, bubbles surge at the second electrode 115 and the first electrode 114. The pressure and density at the center of the water flow vortex are further reduced. Furthermore, the impurities in the water flow can better gather towards the middle, increasing the cleanliness of the outer water flow. Furthermore, its ability to collect impurities in the airflow is enhanced;

[0035] Moreover, the dust in the water flow is easily subjected to the electric field of the second electrode 115 and the first electrode 114, resulting in electrocoagulation, which enables the impurities gathered in the middle of the water flow to aggregate better, thereby effectively reducing the turbidity of the outer water flow. Since the second electrode 115 and the first electrode 114 are inclined, during their rotation, the dust and impurities gathered in the middle will be pushed downward and compressed, increasing the impurity concentration inside the sewage pipe 4. As a result, when discharging sewage, impurities can be discharged more efficiently, leaving more available water bodies and reducing water waste.

[0036] The humidifying mechanism 112 includes a collection channel 201, which is a channel opened inside the rotating rod 102. An air inlet hole 202 is opened on the lower side of the rotating rod 102, and the air inlet hole 202 connects the outside of the rotating rod 102 with the inside of the collection channel 201. A guide plate 203 is fixedly connected to the outer wall of the rotating rod 102 above the air inlet hole 202. A igniter 204 is fixedly connected to the upper side of the fixing frame 103. A collection plate 205 is fixedly connected to the outer wall of the fixing rod 104. The air inlet hole 202 is located above the second electrode 115 and the first electrode 114. The guide plate 203 is a plate-shaped structure with a raised middle and a downward-tilting edge. The diameter of the guide plate 203 is greater than the front and rear side lengths of the second electrode 115 and the first electrode 114. The collection plate 205 is a plate-shaped structure with a raised middle, and the collection plate 205 is located above the rotating rod 102.

[0037] The gas generated by the second electrode 115 and the first electrode 114 will float upward and enter the air inlet hole 202 through the guidance of the guide plate 203, and then be discharged upward through the collection channel 201. The gas discharged from the upper side of the collection channel 201 will be blocked by the collection plate 205. At this time, when the igniter 204 ignites, the hydrogen-oxygen gas gathered under the collection plate 205 will burn, heating the inside of the treatment barrel 1 and heating the collection plate 205. Then, the water falling on the upper side of the collection plate 205 will quickly evaporate into water vapor, increasing the humidity of the gas inside the treatment barrel 1, making it easier for dust to be captured and fall by water, and preventing dust from spilling.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A new type of negative pressure dust collection equipment suitable for ash silos and slag silos in thermal power plants, comprising a treatment barrel (1), the outer wall of the treatment barrel (1) being fixedly connected to a bracket (2), characterized in that: The upper side of the treatment barrel (1) is fixedly connected to an exhaust pipe (3), the lower side of the treatment barrel (1) is fixedly connected to a sewage pipe (4), the outer wall of the sewage pipe (4) is fixedly connected to a slide rail (5), the lower side of the slide rail (5) is slidably connected to a cover (6), the upper side of the cover (6) is in contact with the lower side of the sewage pipe (4), the left side of the side wall of the treatment barrel (1) is fixedly connected to a fixed pipe (7), the inner wall of the fixed pipe (7) is fixedly connected to a water inlet pipe (8), the water inlet pipe (8) ) extends from one side thereof to the upper side of the interior of the treatment barrel (1), and the water inlet pipe (8) is located at the lower surface of one end inside the treatment barrel (1) and is fixedly connected to a plurality of atomizing nozzles (10), the lower side wall of the treatment barrel (1) is fixedly connected to an air inlet box (9), the air inlet box (9) is located at one side outside the treatment barrel (1) and is provided with an air inlet, the air inlet box (9) is located at one side inside the treatment barrel (1) and is provided with a plurality of exhaust slits (12), and a treatment mechanism (11) is provided inside the treatment barrel (1).

2. According to claim 1, a new type of negative pressure dust collection equipment suitable for ash silos and slag silos in thermal power plants is characterized by: The lower side of the processing barrel (1) is conical, and the front and rear sides of the processing barrel (1) gradually converge toward the middle from bottom to top; one end of the air inlet box (9) located inside the processing barrel (1) is fixedly connected to the inner wall of the processing barrel (1), and the exhaust slit (12) provided on the air inlet box (9) faces the inner wall of the processing barrel (1).

3. The new negative pressure dust collecting equipment suitable for ash silos and slag silos of thermal power plants according to claim 2 is characterized by: The processing mechanism (11) comprises a foot (101), the lower side of the foot (101) is fixedly connected to the lower side of the inner wall of the processing barrel (1), the inner wall of the foot (101) is rotatably connected to a rotating rod (102) via a bearing, the upper outer wall of the rotating rod (102) is fixedly connected to a fixing frame (103), the left and right sides of the fixing frame (103) are both fixedly connected to a fixing rod (104), one end of the fixing rod (104) away from the rotating rod (102) is fixedly connected to a resistance plate (105), the outer wall of the rotating rod (102) is rotatably connected to a waterproof shell (106) via a bearing, the lower side of the waterproof shell (106) is fixedly connected to a fixing foot (113), the lower end of the fixing foot (113) is fixedly connected to the outer wall of the foot (101), and the waterproof shell (106) is fixedly connected to the outer wall of the foot (101). The inner wall of the waterproof shell (106) is fixedly connected to a magnet (109), the inner side of the magnet (109) is provided with a coil (107), the middle outer wall of the coil (107) is fixedly connected to the inner wall of the rotating rod (102), the two ends of the coil (107) are respectively fixedly connected to two conductive plates (108), the outer walls of the two conductive plates (108) are in contact with conductive sliders (111), the outer walls of the conductive sliders (111) are fixedly connected to a connecting rod (110), the conductive slider (111) is fixedly connected to the upper side of the inner wall of the waterproof shell (106) through the connecting rod (110), the upper side of the fixing frame (103) is provided with a humidifying mechanism (112), and the lower side of the outer wall of the rotating rod (102) is fixedly connected to a first electrode (114) and a second electrode (115).

4. The new negative pressure dust collecting equipment suitable for ash silos and slag silos of thermal power plants according to claim 3 is characterized by: A plurality of magnets (109) are arranged outside the coil (107), and two adjacent magnets (109) have opposite magnetic poles facing one side of the coil (107), and the two conductive sliders (111) are electrically connected to the second electrode (115) and the first electrode (114) respectively, and the rotation paths of the two conductive plates (108) are consistent.

5. The new negative pressure dust collecting equipment suitable for ash silos and slag silos of thermal power plants according to claim 4 is characterized by: The second electrode (115) and the first electrode (114) are located at the lower part of the side wall of the rotating rod (102), and the rotating rod (102) is located on the upper side of the sewage pipe (4), and the second electrode (115) and the first electrode (114) are arranged obliquely.

6. The new negative pressure dust collecting equipment suitable for ash silos and slag silos of thermal power plants according to claim 5 is characterized by: The humidifying mechanism (112) comprises a collecting channel (201), the collecting channel (201) being a channel opened inside the rotating rod (102), and an air inlet hole (202) being opened on the lower side of the rotating rod (102), the air inlet hole (202) connecting the outer side of the rotating rod (102) with the inner side of the collecting channel (201), the outer wall of the rotating rod (102) being fixedly connected to a guide plate (203) at the upper part of the air inlet hole (202), the upper side of the fixing frame (103) being fixedly connected to an igniter (204), and the outer wall of the fixing rod (104) being fixedly connected to a collecting plate (205).

7. A new type of negative pressure dust collection equipment suitable for ash silos and slag silos in thermal power plants according to claim 6, characterized in that: The air inlet (202) is located above the second electrode (115) and the first electrode (114), and the guide plate (203) is a plate-like structure with a raised middle portion and a downwardly inclined edge. The diameter of the guide plate (203) is greater than the length of the front and rear sides of the second electrode (115) and the first electrode (114). The collecting plate (205) is a plate-like structure with a raised middle portion, and the collecting plate (205) is located on the upper side of the rotating rod (102).

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