Smoke discharging and dust removing device for boiler

Abstract

The utility model belongs to the field of smoke exhaust for boilers, and particularly relates to a smoke exhaust and dust removal device for a boiler, which comprises a box body, the end part of the box body is communicated with an air inlet; the other end of the box body is communicated with an air outlet; the top of the box body is fixedly connected with a water pump; the top of the box body is fixedly connected with a water storage tank; the water pump is connected with the water storage tank through a pipeline; a shower head is fixedly connected to the top of the inner side wall of the box body; the water storage tank is connected with the shower head through a pipeline; a plurality of first round holes are formed in the bottom of the shower head; a plurality of pull ropes are fixedly connected to the bottom of the shower head; the middle part of the pull rope is fixedly connected with a plurality of fixing plates; through the cooperation effect of the pull rope and the fixing plate, water flow makes contact with the fixing plate in the descending process and flows out along the edge of the fixing plate, the distribution range of the water flow in the device is enlarged, the contact area of the water flow and flue gas is increased, the water flow makes more uniform contact with the flue gas, and dust removal treatment of the water flow on the flue gas is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of smoke exhaust for boilers, in particular to a boiler smoke exhaust and dust removal device. Background Art

[0002] A boiler is an energy conversion device that mainly uses the heat energy released by fuel combustion or other thermal energy to heat the working medium water or other fluids to certain parameters. The hot water or steam generated by the boiler can directly provide the required thermal energy for industrial production and people's lives, and can also be converted into mechanical energy through a steam power device, or then converted into electrical energy through a generator.

[0003] The flue gas discharged from the boiler needs to undergo multiple treatment processes before it can be discharged into the atmosphere. The flue gas treatment methods mainly include desulfurization, denitrification, dust removal and other processes.

[0004] Existing boiler flue gas dust removal treatment usually adopts spraying to reduce dust. It is found in use observation that the flow range of water flow is limited by the position of the nozzle, which will cause the flue gas in some areas not to be fully sprayed, thereby reducing the dust reduction effect of the device on the flue gas.

[0005] Therefore, in view of the above problems, a boiler smoke exhaust dust removal device is proposed. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: a boiler smoke exhaust and dust removal device described in the utility model comprises a box body; an air inlet is connected to the end of the box body; an air outlet is connected to the other end of the box body; a water pump is fixedly connected to the top of the box body; a water storage tank is fixedly connected to the top of the box body; the water pump and the water storage tank are connected by a pipe; a shower is fixedly connected to the top of the inner wall of the box body; the water storage tank and the shower are connected by a pipe; a plurality of first circular holes are opened at the bottom of the shower head; a plurality of pull ropes are fixedly connected to the bottom of the shower head; a plurality of fixing plates are fixedly connected to the middle of the pull rope; the fixing plate is inclined; the box A motor is fixedly connected to the top of the body; a rotating shaft is fixedly connected to the output end of the motor; the rotating shaft and the box body are arranged through and are rotatably connected; a plurality of fan blades are fixedly connected to the middle of the rotating shaft; a partition is fixedly connected to the bottom of the inner wall of the box body; a filter pad is fixedly connected to the middle of the partition; the filter pad and the box body are both fixedly connected; the filter pad is located at the bottom of the fan blades; through the cooperation of the pull rope and the fixed plate, the water flow will come into contact with the fixed plate during the descent process and flow out along the edge of the fixed plate, thereby expanding the distribution range of the water flow in the device, increasing the contact area between the water flow and the smoke, making the water flow and the smoke contact more evenly, and enhancing the dust removal treatment of the smoke by the water flow.

[0008] Preferably, a plurality of elastic ropes are fixedly connected to the inner wall of the shower head; hollow balls are fixedly connected to the ends of adjacent elastic ropes; the hollow balls and the first circular holes are arranged correspondingly; a plurality of second circular holes are opened in the middle of the hollow balls; a first fixing groove is opened in the middle of the hollow balls; through the cooperation of the hollow balls and the second circular holes, water flows out from the second circular holes after entering the interior of the hollow balls, further increasing the flow range of the water flow and enhancing the dust reduction effect of the water flow on the flue gas; at the same time, through the cooperation of the elastic rope and the hollow ball, the hollow ball will block the first circular hole under the tension of the elastic rope, thereby sealing the shower head.

[0009] Preferably, a plurality of diverter plates are fixedly connected to the middle of the hollow sphere; a plurality of third circular holes are opened in the middle of the diverter plate; the diverter plate is an arc-shaped structure; by setting the diverter plate, the diverter plate will divert the surface water flow, further expanding the distribution range of the water flow in the device.

[0010] Preferably, a plurality of sleeves are fixedly connected to the middle part of the rotating shaft; a spring is fixedly connected to the inner wall of the sleeve; a sliding rod is fixedly connected to the end of the spring; the sliding rod and the sleeve are slidably connected; a second fixing groove is opened at the end of the sliding rod; a first magnet is fixedly connected to the inner wall of the second fixing groove; a third fixing groove is opened in the middle part of the partition; a second magnet is fixedly connected to the inner wall of the third fixing groove; the first magnet and the second magnet are correspondingly arranged; the sliding rod will impact the partition under the action of the magnetic force between the first magnet and the second magnet, thereby accelerating the shedding of water droplets on the surface of the partition and reducing stains on the surface of the partition.

[0011] Preferably, a fixing ring is fixedly connected to the middle part of the sliding rod; a plurality of ball bearings are rotatably connected to the middle part of the fixing ring; by arranging the ball bearings, the ball bearings will rotate on the surface of the partition when in contact with the partition, thereby reducing the friction between the sliding rod and the partition, and reducing the scratches left on the surface when the partition and the sliding rod are in contact.

[0012] Preferably, a plurality of slow-flow grooves are provided on the top of the fixed plate; the slow-flow grooves are of a wavy structure; by providing the slow-flow grooves, the slow-flow grooves will increase the flow distance of the water flow on the surface of the fixed plate, reduce the flow speed of the water flow, make the contact time between the water flow and the flue gas longer, and enhance the dust reduction effect of the water flow on the flue gas.

[0013] Preferably, a collection box is slidably connected to the middle of the box body; a handle is fixedly connected to the middle of the collection box; the collection box is located at the bottom of the filter pad; when the fan blades rotate, impurities accumulated inside the filter pad will fall off, and these shed impurities will enter the interior of the collection box. The staff can pull the handle to remove the collection box from the interior of the box body and clean the handle, thereby improving the convenience of the device in cleaning impurities.

[0014] The utility model is beneficial in that:

[0015] 1. The utility model describes a boiler smoke exhaust dust removal device, through the cooperation of the pull rope and the fixed plate, the water flow will come into contact with the fixed plate during the descending process and flow out along the edge of the fixed plate, thereby expanding the distribution range of the water flow in the device, increasing the contact area between the water flow and the flue gas, making the water flow and the flue gas contact more evenly, and enhancing the dust removal treatment of the flue gas by the water flow.

[0016] 2. The boiler smoke exhaust dust removal device described in the utility model, through the cooperation of the hollow ball and the second circular hole, the water flow enters the interior of the hollow ball and then flows out from the second circular hole, further increasing the flow range of the water flow and enhancing the dust reduction effect of the water flow on the flue gas. At the same time, through the cooperation of the elastic rope and the hollow ball, the hollow ball will block the first circular hole under the tension of the elastic rope, thereby sealing the shower head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the main body of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the partition in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the fixing plate in the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the diverter plate in the utility model;

[0022] Figure 5 It is a structural schematic diagram of the rotating shaft of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the slide bar in the utility model.

[0024] In the figure: 1. box body; 102. air inlet; 103. air outlet; 104. water pump; 105. water tank; 106. shower head; 107. first round hole; 108. pull rope; 109. fixing plate; 110. motor; 111. rotating shaft; 112. fan blade; 113. filter pad; 114. partition; 2. elastic rope; 22. hollow ball; 23. second round hole; 24. first fixed groove; 3. diverter plate; 32. third round hole; 4. sleeve; 42. spring; 43. slide bar; 44. second fixed groove; 45. first magnet; 46. third fixed groove; 47. second magnet; 5. fixing ring; 52. ball; 6. slow flow groove; 7. collection box; 72. handle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Specific examples are given below.

[0027] See also Figures 1 to 3As shown, a boiler smoke exhaust and dust removal device described in an embodiment of the utility model comprises a box body 1; an air inlet 102 is connected to the end of the box body 1; an air outlet 103 is connected to the other end of the box body 1; a water pump 104 is fixedly connected to the top of the box body 1; a water storage tank 105 is fixedly connected to the top of the box body 1; the water pump 104 and the water storage tank 105 are connected by a pipeline; a shower head 106 is fixedly connected to the top of the inner side wall of the box body 1; the water storage tank 105 and the shower head 106 are connected by a pipeline; a plurality of first circular holes 107 are opened at the bottom of the shower head 106; a plurality of pull ropes 108 are fixedly connected to the bottom of the shower head 106; a plurality of fixed pull ropes 108 are fixedly connected to the middle of the pull rope 108 The fixed plate 109 is tilted; the top of the box 1 is fixedly connected with a motor 110; the output end of the motor 110 is fixedly connected with a rotating shaft 111; the rotating shaft 111 and the box 1 are through-set and rotatably connected; a plurality of fan blades 112 are fixedly connected to the middle of the rotating shaft 111; a partition 114 is fixedly connected to the bottom of the inner wall of the box 1; a filter pad 113 is fixedly connected to the middle of the partition 114; the filter pad 113 and the box 1 are both fixedly connected; the filter pad 113 is located at the bottom of the fan blades 112; when working, the smoke is discharged into the interior of the box 1 through the air inlet 102 and then the device is started. After the device is started, the water pump 104 and the motor 110 are When the water pump 104 is started, the water in the water tank 105 will enter the shower head 106 through the pipe, and then the water will be ejected from the first circular hole 107 and contact the fixed plate 109 during the descent process. Because the fixed plate 109 is inclined, the water will flow along the surface of the fixed plate 109 when it reaches the surface of the fixed plate 109 and flow out from the edge of the fixed plate 109, increasing the flow range of the water flow, and the water will contact the flue gas during the descent process and settle the dust in the flue gas when it contacts, so that the device can remove dust from the flue gas, and then the flue gas will pass through the partition 114 and continue to flow to the fan blade 112. When the motor 110 is started, the shaft 111 will rotate When the shaft 111 rotates, the fan blades 112 will be driven to rotate. When the fan blades 112 rotate, the airflow blown toward the filter pad 113 causes the smoke to continue to flow toward the filter pad 113. After the smoke contacts the filter pad 113, the dust and other impurities inside will be filtered out by the filter pad 113. Finally, the filtered smoke will be discharged from the air outlet 103 and proceed to the next step of treatment. Through the cooperation of the pull rope 108 and the fixed plate 109, the water flow will contact the fixed plate 109 during the descent process and flow out along the edge of the fixed plate 109, thereby expanding the distribution range of the water flow in the device, increasing the contact area between the water flow and the smoke, making the water flow and the smoke contact more evenly, and enhancing the dust removal treatment of the smoke by the water flow.

[0028] See also Figure 3 and Figure 4As shown, the inner wall of the shower head 106 is fixed with a plurality of elastic cords 2; the ends of adjacent elastic cords 2 are fixed with hollow balls 22; the hollow balls 22 and the first circular holes 107 are arranged correspondingly; a plurality of second circular holes 23 are opened in the middle of the hollow balls 22; a first fixing groove 24 is opened in the middle of the hollow balls 22; when the water flows out of the first circular hole 107, it will contact the hollow balls 22, and the water will enter the interior of the hollow balls 22 through the first fixing groove 24 and flow out from the second circular holes 23. When the device stops working, the hollow balls 2 2 will be reset under the pulling force of the elastic rope 2 and the first circular hole 107 will be blocked, thereby reducing the pollution of impurities to the shower head 106; through the cooperation of the hollow ball 22 and the second circular hole 23, the water flow will flow out from the second circular hole 23 after entering the interior of the hollow ball 22, further increasing the flow range of the water flow and enhancing the dust reduction effect of the water flow on the smoke. At the same time, through the cooperation of the elastic rope 2 and the hollow ball 22, the hollow ball 22 will block the first circular hole 107 under the pulling force of the elastic rope 2, thereby sealing the shower head 106.

[0029] See also Figure 4 As shown, a plurality of diverter plates 3 are fixedly connected to the middle of the hollow ball 22; a plurality of third circular holes 32 are opened in the middle of the diverter plate 3; the diverter plate 3 is an arc-shaped structure; when the water flow is ejected from the second circular hole 23, it will reach the surface of the diverter plate 3, and then the water flow will flow along the surface of the diverter plate 3 and flow out from the edge of the diverter plate 3, thereby expanding the flow range of the water flow; by setting the diverter plate 3, the diverter plate 3 will divert the water flow on the surface, thereby further expanding the distribution range of the water flow in the device.

[0030] See also Figure 5 and Figure 6As shown, a plurality of sleeves 4 are fixedly connected to the middle of the rotating shaft 111; a spring 42 is fixedly connected to the inner side wall of the sleeve 4; a slide bar 43 is fixedly connected to the end of the spring 42; the slide bar 43 and the sleeve 4 are slidably connected; a second fixed groove 44 is provided at the end of the slide bar 43; a first magnet 45 is fixedly connected to the inner side wall of the second fixed groove 44; a third fixed groove 46 is provided in the middle of the partition 114; a second magnet 47 is fixedly connected to the inner side wall of the third fixed groove 46; the first magnet 45 and the second magnet 47 are correspondingly arranged; when the shower head 106 is used to reduce dust from smoke, splashing water droplets will reach the surface of the partition 114, and when the rotating shaft 111 rotates, it will drive the sleeve 4 to rotate together, and when the sleeve 4 rotates, it will drive the spring 42 and the slide bar 43 to rotate together When the slide bar 43 rotates, it will drive the first magnet 45 to move together. When the first magnet 45 moves, the distance between it and the second magnet 47 will change. When the first magnet 45 and the second magnet 47 are close to each other, the first magnet 45 will be attracted by the second magnet 47 and transfer the magnetic force to the slide bar 43. Under the action of the magnetic force, the slide bar 43 will approach the partition 114 and come into contact with the partition 114. When in contact, the slide bar 43 will knock on the surface of the partition 114. After the partition 114 is knocked, the water droplets attached to the surface will fall off faster, reducing the water droplets on the surface of the partition 114; the slide bar 43 will hit the partition 114 under the action of the magnetic force between the first magnet 45 and the second magnet 47, accelerating the falling of water droplets on the surface of the partition 114 and reducing stains on the surface of the partition 114.

[0031] See also Figure 6 As shown, a fixing ring 5 is fixedly connected to the middle part of the slide bar 43; a plurality of balls 52 are rotatably connected to the middle part of the fixing ring 5; when the slide bar 43 and the partition 114 come into contact, the balls 52 will also come into contact with the partition 114, and when the slide bar 43 continues to rotate along with the rotating shaft 111, the balls 52 will rub against the partition 114 and rotate under the action of friction, so that the sliding friction between the slide bar 43 and the partition 114 is converted into rolling friction, thereby reducing the friction between the slide bar 43 and the partition 114; by providing the balls 52, the balls 52 will rotate on the surface of the partition 114 when in contact with the partition 114, thereby reducing the friction between the slide bar 43 and the partition 114 and reducing the scratches left on the surface when the partition 114 and the slide bar 43 come into contact.

[0032] See also Figure 3As shown, a plurality of slow flow grooves 6 are provided on the top of the fixed plate 109; the slow flow grooves 6 are of a wavy structure; when the water flow reaches the surface of the fixed plate 109, the water flow will enter the inside of the slow flow grooves 6, and then the water flow will flow along the inner wall of the slow flow grooves 6 and flow out from the edge of the fixed plate 109. Because the slow flow grooves 6 are of a wavy structure, the flow distance of the water flow is increased and the flow speed of the water flow is reduced; by setting the slow flow grooves 6, the slow flow grooves 6 will increase the flow distance of the water flow on the surface of the fixed plate 109 and reduce the flow speed of the water flow, so that the contact time between the water flow and the flue gas is longer, thereby enhancing the dust reduction effect of the water flow on the flue gas.

[0033] See also Figure 1 and Figure 2 As shown, a collecting box 7 is slidably connected to the middle of the box body 1; a handle 72 is fixedly connected to the middle of the collecting box 7; the collecting box 7 is located at the bottom of the filter pad 113; when the fan blades 112 rotate, the impurities accumulated inside the filter pad 113 will fall off, and these fallen impurities will enter the interior of the collecting box 7. The staff can pull the handle 72 to extract the collecting box 7 from the interior of the box body 1 and clean the handle 72, thereby improving the convenience of the device for cleaning impurities.

[0034] Working principle: After the smoke is discharged into the interior of the box body 1 through the air inlet 102, the device is started. After the device is started, the water pump 104 and the motor 110 are started. After the water pump 104 is started, the water in the water tank 105 will enter the interior of the shower head 106 through the pipe. Then the water flow will be sprayed out from the first circular hole 107 and will come into contact with the fixed plate 109 during the descent process. Because the fixed plate 109 is inclined, the water flow will flow along the surface of the fixed plate 109 when it reaches the surface of the fixed plate 109 and flow out from the edge of the fixed plate 109, increasing the flow range of the water flow, and the water flow will come into contact with the smoke during the descent process and settle the dust in the smoke when in contact, so that the device removes the dust from the smoke, and then the smoke will pass The smoke continues to flow toward the filter pad 113 through the partition 114 and continues to flow to the fan blade 112. When the motor 110 is started, the shaft 111 will rotate. When the shaft 111 rotates, the fan blade 112 will rotate. When the fan blade 112 rotates, the airflow will be blown toward the filter pad 113, so that the smoke continues to flow toward the filter pad 113. After the smoke contacts the filter pad 113, the dust and other impurities inside will be filtered out by the filter pad 113. Finally, the filtered smoke will be discharged from the air outlet 103 and processed in the next step. When the water flows out of the first circular hole 107, it will contact the hollow ball 22. The water will enter the interior of the hollow ball 22 through the first fixed groove 24 and flow out from the second circular hole 23. When the device stops working, the hollow ball 22 will be pulled by the elastic rope 2. The first circular hole 107 is reset and blocked to reduce the pollution of impurities to the shower head 106; when the water flow is sprayed out from the second circular hole 23, it will reach the surface of the diverter plate 3, and then the water flow will flow along the surface of the diverter plate 3 and flow out from the edge of the diverter plate 3, expanding the flow range of the water flow; when the shower head 106 is used to reduce dust from smoke, splashing water droplets will reach the surface of the partition 114, and when the shaft 111 rotates, it will drive the sleeve 4 to rotate together, and when the sleeve 4 rotates, it will drive the spring 42 and the slide bar 43 to rotate together, and when the slide bar 43 rotates, it will drive the first magnet 45 to move together, and when the first magnet 45 moves, the distance between the second magnet 47 will change, and when the first magnet 45 and the second magnet 47 are close to each other, the first magnet 45 The second magnet 47 will attract the slider 43 and transfer the magnetic force to the slider 43. Under the action of the magnetic force, the slider 43 will approach the partition 114 and come into contact with the partition 114. When in contact, the slider 43 will knock on the surface of the partition 114. After the partition 114 is knocked, the water droplets attached to the surface will fall off faster, thereby reducing the water droplets on the surface of the partition 114. When the slider 43 comes into contact with the partition 114, the ball 52 will also come into contact with the partition 114. When the slider 43 continues to rotate with the shaft 111, the ball 52 will rub against the partition 114 and rotate under the action of friction, so that the sliding friction between the slider 43 and the partition 114 is converted into rolling friction, thereby reducing the friction between the slider 43 and the partition 114.When the water reaches the surface of the fixed plate 109, the water will enter the slow flow groove 6, and then the water will flow along the inner wall of the slow flow groove 6 and flow out from the edge of the fixed plate 109. Because the slow flow groove 6 is a wave-shaped structure, the flow distance of the water flow is increased and the flow speed of the water flow is reduced; when the fan blades 112 rotate, the impurities accumulated in the filter pad 113 will fall off, and these fallen impurities will enter the collection box 7. The staff can pull the handle 72 to pull the collection box 7 out of the box body 1 and clean the handle 72, which improves the convenience of the device to clean impurities. ;

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A boiler smoke exhaust dust removal device, comprising a housing (1), characterized in that: The end of the box (1) is connected to an air inlet (102); the other end of the box (1) is connected to an air outlet (103); a water pump (104) is fixedly connected to the top of the box (1); a water storage tank (105) is fixedly connected to the top of the box (1); the water pump (104) and the water storage tank (105) are connected via a pipeline; a shower head (106) is fixedly connected to the top of the inner wall of the box (1); the water storage tank (105) and the shower head (106) are connected via a pipeline; a plurality of first circular holes (107) are provided at the bottom of the shower head (106); a plurality of pull cords (108) are fixedly connected to the bottom of the shower head (106); the pull cords (108) A plurality of fixing plates (109) are fixedly connected in the middle of the housing (1); the fixing plates (109) are arranged in an inclined manner; a motor (110) is fixedly connected to the top of the housing (1); a rotating shaft (111) is fixedly connected to the output end of the motor (110); the rotating shaft (111) and the housing (1) are arranged to penetrate and are rotatably connected; a plurality of fan blades (112) are fixedly connected in the middle of the rotating shaft (111); a partition plate (114) is fixedly connected to the bottom of the inner side wall of the housing (1); a filter pad (113) is fixedly connected in the middle of the partition plate (114); the filter pad (113) and the housing (1) are both fixedly connected; and the filter pad (113) is located at the bottom of the fan blades (112).

2. A boiler smoke exhaust dust removal device according to claim 1, characterized in that: The inner wall of the shower head (106) is fixedly connected to a plurality of elastic ropes (2); the ends of adjacent elastic ropes (2) are fixedly connected to hollow balls (22); the hollow balls (22) and the first circular holes (107) are arranged correspondingly; a plurality of second circular holes (23) are provided in the middle of the hollow balls (22); and a first fixing groove (24) is provided in the middle of the hollow balls (22).

3. A boiler smoke exhaust dust removal device according to claim 2, characterized in that: A plurality of diverter plates (3) are fixedly connected to the middle of the hollow ball (22); a plurality of third circular holes (32) are opened in the middle of the diverter plate (3); and the diverter plate (3) is an arc-shaped structure.

4. A boiler smoke exhaust dust removal device according to claim 3, characterized in that: A plurality of sleeves (4) are fixedly connected to the middle of the rotating shaft (111); a spring (42) is fixedly connected to the inner wall of the sleeve (4); a sliding rod (43) is fixedly connected to the end of the spring (42); the sliding rod (43) and the sleeve (4) are slidably connected; a second fixing groove (44) is provided at the end of the sliding rod (43); a first magnet (45) is fixedly connected to the inner wall of the second fixing groove (44); a third fixing groove (46) is provided in the middle of the partition (114); a second magnet (47) is fixedly connected to the inner wall of the third fixing groove (46); the first magnet (45) and the second magnet (47) are correspondingly arranged.

5. A boiler smoke exhaust dust removal device according to claim 4, characterized in that: A fixing ring (5) is fixedly connected to the middle of the sliding rod (43); and a plurality of balls (52) are rotatably connected to the middle of the fixing ring (5).

6. A boiler smoke exhaust dust removal device according to claim 5, characterized in that: A plurality of slow-flow grooves (6) are provided on the top of the fixed plate (109); the slow-flow grooves (6) are of a wave-shaped structure.

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