Air pre-heater capable of reducing smoke side pressure difference

Abstract

The invention relates to the technical field of air pre-heaters, discloses an air pre-heater capable of reducing the pressure difference of a flue gas side, and solves the problems that an existing air pre-heater capable of reducing the pressure difference of the flue gas side is single in ash removal mode, single-layer ash removal and low in efficiency. The multi-angle soot blower comprises a shell, a flue gas channel formed in the surface of the shell, a primary air channel, a secondary air channel and a heat storage assembly rotationally connected into the shell, multi-angle efficient soot blowing is achieved through swinging of an air cylinder, the soot blowing effect is greatly improved, soot is removed, the air channel side pressure difference is reduced, and the equipment operation efficiency and heat exchange performance are guaranteed; the swing brush assists in cleaning stubborn dust blocks, enhancing the cleanliness of the heat storage assembly, preventing an air duct from being blocked, prolonging the service life of the air duct and reducing faults, the suction fan and the annular shell cooperate with an adsorption mechanism, dust is captured in real time, secondary pollution is avoided, the air pre-heater is kept clean, the interior of the air pre-heater is kept clean, and abrasion and corrosion of dust to parts are reduced. And the low air duct side pressure difference and the system operation efficiency stability are maintained through assistance.

Description

Technical Field

[0001] The invention relates to the technical field of air preheaters, in particular to an air preheater capable of reducing flue gas side pressure difference. Background Art

[0002] In the field of thermal power generation, the air preheater is an indispensable and important equipment. Its main function is to use the waste heat of the high-temperature flue gas discharged from the tail flue of the boiler to preheat the air entering the boiler furnace. The low comprehensive temperature at the cold end of the air preheater will also cause a series of adverse consequences. The water vapor and acidic gas in the flue gas are easy to condense and mix with dust to form a corrosive mixture, which causes corrosion to the metal parts of the air preheater. The corroded surface becomes rough and easier to absorb dust, resulting in increased dust accumulation, narrowing of the air flow channel, and increased pressure difference. In addition, as time goes by, dust accumulation will continue to accumulate, seriously hindering the circulation of flue gas and air, causing the pressure difference on both sides of the air preheater to increase significantly, which will lead to an increase in the power consumption of the induced draft fan. At the same time, if the ammonia escape rate is not properly controlled, it will not only affect the denitrification effect, but may also cause blockage and corrosion of subsequent equipment, further affecting the system operation efficiency and increasing energy consumption.

[0003] The existing air preheater is cleaned by first opening the upper end of the shell, and using the air blowing component to blow the soot from the top surface to the center to the outer end of the heat storage component inside the air preheater. There are dead corners for soot blowing at the edges, corners and bottom of the heat storage component, which makes it impossible to effectively remove the dust accumulated in these areas. The single-direction soot blowing method is difficult to adapt to the complex structure and dust distribution of the heat storage component, and the cleaning effect is not good for sticky dust or agglomerated dust, which increases the operation steps and is inefficient.

[0004] In view of the above problems, an innovative design was carried out based on the original air preheater which can reduce the pressure difference on the flue gas side. Summary of the invention

[0005] The purpose of the present invention is to provide an air preheater capable of reducing the pressure difference on the flue gas side. By adopting the device to work, the problems of the existing air preheater capable of reducing the pressure difference on the flue gas side, such as single cleaning method, single-layer cleaning and low efficiency, are solved.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an air preheater capable of reducing flue gas side pressure difference, comprising a shell, a flue gas channel, a primary air channel and a secondary air channel opened on the surface of the shell, and a heat storage component rotatably connected to the inside of the shell, a servo motor is arranged at the top of the shell, a driving end of the servo motor extends to the inside of the shell, the driving end of the servo motor is connected to the heat storage component, a driving structure is arranged outside the driving end of the servo motor, a reversing linkage structure is arranged on one side of the driving structure, dust blowing structures are swingably connected on both sides of the reversing linkage structure, a dust collection structure is arranged above the dust blowing structure, and a side blowing structure is rotatably connected on one side of the dust collection structure;

[0007] The driving structure includes a rotating rod rotatably connected to the outside of the driving end of the servo motor;

[0008] The reverse linkage structure includes a bevel gear set arranged on one side of the rotating rod, swing rods are arranged on both sides of the bevel gear set, a rotating column is arranged on the other side of the bevel gear set, the rotating column is opposite to the driving direction of the servo motor, the outer side of the rotating column is rotatably connected to a shell, and the shell is slidably connected to the inner wall of the shell;

[0009] The dust blowing structure includes a wind tube arranged on one side of the swing rod, one side of the wind tube is connected to an air duct, and a plurality of air ducts are distributed at equal intervals, and the other side of the wind tube is connected to a blower, and the blower is fixedly installed on the top of the housing;

[0010] The dust collection structure includes an annular shell arranged on one side of the shell, the diameter of the annular shell is larger than the diameter of the air cylinder, the inner side of the annular shell is connected to an air suction head, and a plurality of air suction heads are distributed at equal intervals, one side of the annular shell is connected to a movable shell, the movable shell is slidably connected to the shell, one side of the movable shell is connected to an exhaust fan, and the exhaust fan is fixedly installed on the top of the shell;

[0011] The side blowing structure comprises a long tube rotatably connected to one side of the moving shell, a blowing head is connected to one side of the long tube close to the heat storage component, and a plurality of blowing heads are evenly distributed.

[0012] Furthermore, the driving structure also includes a ratchet arranged on the outside of the driving end of the servo motor, and the driving structure also includes a circular shell rotatably connected to the surface of the driving end of the servo motor, a fixing rod is provided on one side of the circular shell, a pawl is rotatably connected to the outside of the fixing rod, a spring is provided on one side of the pawl, and the end of the spring away from the pawl is connected to the circular shell.

[0013] Furthermore, the bevel gear group includes a bevel gear 1 arranged on the outside of the rotating rod, the shell is rotatably connected to the swing rod, a bevel gear 2 is arranged on one side of the swing rod, two sets of bevel gears 2 are meshingly connected with the bevel gear 1, there are two sets of bevel gears 2 symmetrically distributed about the bevel gear 1, and both sets of bevel gears 2 are half gear structures, a spring is sleeved on the surface of the swing rod, one end of the spring is connected to the shell, the bevel gear group also includes a rotating shaft rotatably connected to the inside of the shell, a bevel gear 3 is arranged on one end of the rotating shaft, and a bevel gear 4 is arranged on the outside of the rotating column, and the bevel gear 4 is meshingly connected with the bevel gear 3.

[0014] Furthermore, the dust collection structure also includes a suction pipe connected to one end of the exhaust fan, one end of the suction pipe is connected to a processing box, the processing box is fixedly installed on the top of the outer shell, the processing box is used to isolate dust from entering the interior of the exhaust fan, one side of the processing box is connected to a pipe, the pipe extends to the interior of the outer shell, and the pipe is connected to the movable shell.

[0015] Furthermore, a slide groove is provided on the inner wall of the outer shell, a slider is slidably connected inside the slide groove, the slider is connected to the movable shell, a groove is also provided on the inner wall of the outer shell, the groove is connected to the slide groove, the movable shell slides in the groove, a connecting pipe is connected to the top of the annular shell, the connecting pipe is connected to the movable shell, and a connecting plate is provided on one side of the annular shell to be connected and fixed to the shell.

[0016] Furthermore, the side blowing structure includes a receiving block arranged on one side of the movable shell, one side of the receiving block is rotatably connected to a rotating rod, a bevel gear five is arranged on the outer side of the rotating rod, and the other side of the receiving block is rotatably connected to a driven shaft, a bevel gear six is ​​arranged on the outer side of the driven shaft, and the bevel gear five is meshingly connected with the bevel gear six.

[0017] The driven shaft is connected to the long tube, a fixed sleeve block is sleeved on the surface of the long tube, the fixed sleeve block is fixedly connected to the moving shell, one side of the long tube is connected to a short tube, and the short tube is connected to the moving shell.

[0018] Furthermore, the output end of the blower is connected to a hose, which extends to the inside of the shell. The end of the hose close to the wind tube is connected to a sleeve, which is rotatably connected to the rotating rod. The inside of the sleeve is a hollow structure, and half of the rotating rod close to the wind tube is a cavity. The rotating rod is fixedly connected to the wind tube, and the cavity of half of the rotating rod is communicated with the inner cavity of the wind tube.

[0019] Furthermore, one end of the air duct away from the wind cylinder is connected to a wind head, which is used to clean the dust accumulated on the top surface of the heat storage component. A fixing ring is fixedly installed on the outside of each air duct, and swing brushes are symmetrically arranged on both sides of the fixing ring, and the two groups of swing brushes are distributed in an eight-shaped pattern.

[0020] Furthermore, a circular plate is provided at the inner bottom end of the shell, and the circular plate is rotatably connected to the servo motor driving end, a roller brush dust collecting structure is provided on one side of the long tube, and the roller brush dust collecting structure includes a rotating rod arranged at the bottom end of the long tube, and a bevel gear seven is arranged on the outer side of the rotating rod, a box body is fixedly installed on the top end of the circular plate, and a dust collecting drawer is slidably connected to the inside of the box body, guide plates are symmetrically provided on both sides of the top end of the box body, and the guide plates are inclined, and a top block is provided on the top end of the box body, the rotating rod is rotatably connected to the top block, and a roller brush is rotatably connected to the other side of the top block, and a bevel gear eight is provided on the side of the roller brush close to the bevel gear seven, and the bevel gear seven is meshingly connected with the bevel gear eight.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention proposes an air preheater capable of reducing the pressure difference on the flue gas side. The existing air preheaters capable of reducing the pressure difference on the flue gas side have a single cleaning method, a single-layer cleaning and low efficiency. The present invention comprises an outer shell, a flue gas channel, a primary air channel and a secondary air channel opened on the surface of the outer shell, and a heat storage component rotatably connected to the inside of the outer shell. The ratchet pawl drives the bevel gear transmission to realize the swing of the wind cylinder, and the surface of the heat storage component can be efficiently blown and cleaned from multiple angles. Compared with the traditional soot blowing method, the soot blowing coverage and effect are greatly improved, the attached smoke and dust are effectively removed, the pressure difference on the air duct side caused by dust accumulation is reduced, the normal operation efficiency and heat exchange performance of the equipment are guaranteed, and the setting of the swing brush plays a good supplement for stubborn dust blocks. The cleaning effect can loosen and remove dust blocks, improve the cleanliness of heat storage components, prevent air duct blockage, reduce air duct resistance and side pressure difference, extend the life of heat storage components, and reduce the risk of failure. At the same time, the dust adsorption mechanism of the exhaust fan and the ring shell can capture the blown dust in real time, avoid secondary pollution and increased dust accumulation, maintain the cleanliness of the inside of the air preheater, reduce the wear and corrosion of components by dust, ensure the reliable operation of the equipment, and help maintain a low side pressure difference in the air duct and the stability of the system operation efficiency. In addition, the swing of the long tube and the blowing head driven by the swing of the wind tube can further clean the dust, improve the dust removal system of the entire air preheater, and comprehensively improve the performance and stability of the air preheater, ensuring its high efficiency and reliability during the heat exchange process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall three-dimensional cross-sectional structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the housing, motor, driving structure, reverse linkage structure, dust blowing structure, dust collection structure, side blowing structure, and roller brush dust collection structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional unfolded structure of the motor, the driving structure and the reverse linkage structure of the present invention;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of the dust blowing structure and the dust suction and collection structure of the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the dust collection structure of the present invention;

[0029] Figure 7 It is a front view structural schematic diagram of the dust blowing structure and the dust suction and collection structure of the present invention;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the side-blowing structure of the present invention;

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the roller brush dust collection structure of the present invention.

[0032] In the figure: 1. shell; 2. flue gas channel; 3. primary air channel; 4. secondary air channel; 5. heat storage component; 6. servo motor; 7. driving structure; 71. ratchet; 72. pawl; 73. fixed rod; 74. spring; 75. round shell; 76. rotating rod; 8. reverse linkage structure; 81. bevel gear one; 82. bevel gear two; 83. rotating shaft; 84. swing rod; 85. shell; 86. bevel gear three; 87. bevel gear four; 88. rotating column; 89. spring; 9. dust blowing structure; 91. blower; 92. hose; 93. air cylinder; 94. air duct; 95. wind head; 96. sleeve; 10. fixed ring; 11. swing brush; 12. dust collection structure; 121. exhaust fan; 122. Suction pipe; 123. Processing box; 124. Pipe; 125. Moving shell; 126. Sliding block; 127. Slide groove; 128. Groove; 129. Ring shell; 1210. Suction head; 1211. Connecting pipe; 1212. Connecting plate; 13. Side blowing structure; 131. Rotating rod; 132. Bevel gear five; 133. Receiving block; 134. Bevel gear six; 135. Driven shaft; 136. Long tube; 137. Short tube; 138. Fixed sleeve block; 139. Blowing head; 14. Roller brush dust collecting structure; 141. Rotating rod; 142. Bevel gear seven; 143. Top block; 144. Bevel gear eight; 145. Roller brush; 146. Guide plate; 147. Box body; 15. Round plate. DETAILED DESCRIPTION

[0033] 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.

[0034] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0035] Combination Figure 1-Figure 8An air preheater capable of reducing flue gas side pressure difference comprises a shell 1, a flue gas channel 2, a primary air channel 3 and a secondary air channel 4 opened on the surface of the shell 1, and a heat storage component 5 rotatably connected to the inside of the shell 1, a servo motor 6 is arranged at the top of the shell 1, a driving end of the servo motor 6 extends to the inside of the shell 1, the driving end of the servo motor 6 is connected to the heat storage component 5, a driving structure 7 is arranged outside the driving end of the servo motor 6, a reversing linkage structure 8 is arranged on one side of the driving structure 7, dust blowing structures 9 are swingably connected to both sides of the reversing linkage structure 8, a dust collecting structure 12 is arranged above the dust blowing structure 9, and a side blowing structure 13 is rotatably connected to one side of the dust collecting structure 12.

[0036] The present invention will be further described below in conjunction with the embodiments.

[0037] See also Figure 1-4 The driving structure 7 includes a rotating rod 76 rotatably connected to the outside of the driving end of the servo motor 6, the driving structure 7 also includes a ratchet 71 arranged on the outside of the driving end of the servo motor 6, and the driving structure 7 also includes a round shell 75 rotatably connected to the surface of the driving end of the servo motor 6, a fixing rod 73 is arranged on one side of the round shell 75, a ratchet 72 is rotatably connected to the outside of the fixing rod 73, a spring 74 is arranged on one side of the ratchet 72, and one end of the spring 74 away from the ratchet 72 is connected to the round shell 75,

[0038] See also Figure 5 The reverse linkage structure 8 includes a bevel gear set arranged on one side of the rotating rod 76, swing rods 84 are arranged on both sides of the bevel gear set, and a rotating column 88 is arranged on the other side of the bevel gear set. The rotating column 88 is opposite to the driving direction of the servo motor 6. The outer side of the rotating column 88 is rotatably connected with a shell 85, and the shell 85 is slidably connected to the inner wall of the shell 1. The bevel gear set includes a bevel gear 1 81 arranged on the outer side of the rotating rod 76, and the shell 85 is rotatably connected with the swing rod 84. A bevel gear 2 82 is arranged on one side of the swing rod 84. The two The bevel gears 82 of the second group are meshed and connected with the bevel gear 81. There are two groups of bevel gears 82 symmetrically distributed about the bevel gear 81. Both groups of bevel gears 82 are semi-gear structures. A spring 89 is sleeved on the surface of the swing rod 84. One end of the spring 89 is connected to the housing 85. The bevel gear group also includes a rotating shaft 83 rotatably connected to the inside of the housing 85. One end of the rotating shaft 83 is provided with a bevel gear 3 86. The outer side of the rotating column 88 is provided with a bevel gear 4 87. The bevel gear 4 87 is meshed and connected with the bevel gear 3 86.

[0039] See also Figure 5-8The dust blowing structure 9 includes a wind tube 93 arranged on one side of the swing rod 84, one side of the wind tube 93 is connected to a wind pipe 94, and a plurality of wind pipes 94 are evenly spaced. The other side of the wind tube 93 is connected to a blower 91, and the blower 91 is fixedly mounted on the top of the housing 1. The output end of the blower 91 is connected to a hose 92, and the hose 92 extends to the inside of the housing 1. The end of the hose 92 close to the wind tube 93 is connected to a sleeve 96, and the sleeve 96 is rotatably connected to the rotating rod 131. The inside of the sleeve 96 They are all hollow structures. The half of the rotating rod 131 close to the wind tube 93 is a cavity. The rotating rod 131 is connected and fixed to the wind tube 93. The cavity of half of the rotating rod 131 is connected to the inner cavity of the wind tube 93. The end of the wind tube 94 away from the wind tube 93 is connected to the wind head 95. The wind head 95 is used to clean the dust accumulated on the top surface of the heat storage component 5. A fixing ring 10 is fixedly installed on the outside of each wind tube 94. The two sides of the fixing ring 10 are symmetrically provided with swing brushes 11. The two groups of swing brushes 11 are distributed in an eight-shaped pattern.

[0040] See also Figure 5-7 The dust collection structure 12 includes an annular shell 129 arranged on one side of the shell 85, the diameter of the annular shell 129 is larger than the diameter of the wind tube 93, the inner side of the annular shell 129 is connected to a suction head 1210, and the suction heads 1210 are evenly spaced. A movable shell 125 is connected to one side of the annular shell 129, and the movable shell 125 is slidably connected to the outer shell 1. An exhaust fan 121 is connected to one side of the movable shell 125, and the exhaust fan 121 is fixedly installed at the top of the outer shell 1. The dust collection structure 12 also includes an air suction pipe 122 connected to one end of the exhaust fan 121, and one end of the air suction pipe 122 is connected to a processing box 123, and the processing box 123 is fixedly installed at the top of the outer shell 1. The processing box 123 is used to To prevent dust from entering the exhaust fan 121, a pipe 124 is connected to one side of the processing box 123, and the pipe 124 extends to the inside of the shell 1. The pipe 124 is connected to the moving shell 125. A slide groove 127 is provided on the inner wall of the shell 1. A slider 126 is slidably connected inside the slide groove 127. The slider 126 is connected to the moving shell 125. A groove 128 is also provided on the inner wall of the shell 1. The groove 128 is connected to the slide groove 127. The moving shell 125 slides in the groove 128. A connecting pipe 1211 is connected to the top of the annular shell 129. The connecting pipe 1211 is connected to the moving shell 125. A connecting plate 1212 is provided on one side of the annular shell 129 to be connected and fixed to the shell 85.

[0041] See also Figure 8The side blowing structure 13 includes a long tube 136 rotatably connected to one side of the moving shell 125, and a blowing head 139 is connected to one side of the long tube 136 close to the heat storage component 5, and a plurality of blowing heads 139 are evenly spaced. The side blowing structure 13 includes a receiving block 133 arranged on one side of the moving shell 125, and a rotating rod 131 is rotatably connected to one side of the receiving block 133, and a bevel gear 5 132 is arranged on the outer side of the rotating rod 131, and a driven shaft 135 is rotatably connected to the other side of the receiving block 133, and a bevel gear 6 134 is arranged on the outer side of the driven shaft 135, and the bevel gear 5 132 is meshed with the bevel gear 6 134, and the driven shaft 135 is connected to the long tube 136, and a fixed sleeve block 138 is sleeved on the surface of the long tube 136, and the fixed sleeve block 138 is connected and fixed to the moving shell 125, and a short tube 137 is connected to one side of the long tube 136, and the short tube 137 is connected to the moving shell 125,

[0042] See also Fig. 9 A circular plate 15 is provided at the bottom end of the inner part of the shell 1, and the circular plate 15 is rotatably connected to the driving end of the servo motor 6. A roller brush dust collecting structure 14 is provided on one side of the long tube 136. The roller brush dust collecting structure 14 includes a rotating rod 141 arranged at the bottom end of the long tube 136, and a bevel gear seven 142 is arranged on the outer side of the rotating rod 141. A box body 147 is fixedly installed on the top of the circular plate 15, and a dust collecting drawer is slidably connected to the inside of the box body 147. Guide plates 146 are symmetrically provided on both sides of the top of the box body 147, and the guide plates 146 are inclined. A top block 143 is provided on the top of the box body 147, and the rotating rod 141 is rotatably connected to the top block 143. A roller brush 145 is rotatably connected to the other side of the top block 143, and a bevel gear eight 144 is provided on the side of the roller brush 145 close to the bevel gear seven 142, and the bevel gear seven 142 is meshed with the bevel gear eight 144.

[0043] For details, please refer to Figure 1-4When in use, the smoke in the furnace is sent into the smoke channel 2 through the induced draft fan, and then discharged from the smoke outlet corresponding to the bottom end of the shell 1, so that the heat in the smoke is absorbed by the heat storage component 5, and then the servo motor 6 is started to drive the heat storage component 5 to rotate. At this time, the external cold air is sent into the shell 1 through the primary air channel 3 through the blower, and the rotating heat storage component 5 allows the sent primary air to pass through the heat storage component 5 to absorb heat and heat, so that the heated primary air is sent to the boiler to dry the pulverized coal, and then the cold air sent through the secondary air channel 4 absorbs the heat of the heat storage component 5 and is sent to the boiler for combustion. When the servo motor 6 rotates counterclockwise, the servo motor 6 drives the ratchet 71 at the driving end to rotate, the ratchet 71 toggles the pawl 72, and the pawl 72 to retract the spring 74. The pawl 72 is rotatably connected to the fixed rod 73, the fixed rod 73 is connected to the round shell 75, and the round shell 75 is rotatably connected to the driving end of the servo motor 6. The above is the prior art, which is well known to those skilled in the art and will not be described in detail again. Due to long-term use, the heat storage component 5 absorbs the heat of the flue gas and the smoke in the flue gas adheres to the surface of the heat storage component 5, thereby causing the side pressure at the inlet and the inlet of the air preheater duct to be high or the difference is large, thereby affecting the use, and further reducing the side pressure difference, so by driving the servo motor 6 to rotate in the opposite direction, the driving end of the servo motor 6 drives the ratchet 71 to rotate clockwise, so that the ratchet 71 and the four groups of ratchet pawls 72 on the outside are meshed and rotated at the same time, because the pawl 72 is connected to the round shell 75 through the rotatably connected fixed rod 73 The four groups of ratchet pawls 72 are connected to each other, so that the four groups of ratchet pawls 72 are meshed with the ratchet wheel 71 at the same time to drive the round shell 75 to rotate, the round shell 75 drives the rotating rod 76 to rotate, the rotating rod 76 drives the bevel gear 1 81 to rotate, the bevel gear 1 81 is rotationally connected with the housing 85, the bevel gear 1 81 is meshed with the bevel gear 2 82 that is rotationally connected with the inside of the housing 85 through the swing rod 84, so that the bevel gear 2 82 is a half gear structure, so that the tooth block of the bevel gear 1 81 is meshed with a plate tooth block of the bevel gear 2 82, the bevel gear 2 82 drives the swing rod 84 to rotate half a circle, when the tooth block of the bevel gear 1 81 is not meshed with the tooth block of the bevel gear 2 82, the bevel gear 2 82 is reversed by the clockwork 89 to drive the swing rod 84 to reverse and return to its original position, and further the swing rod 84 drives the wind tube 93 to achieve the swinging effect, and The bevel gear 1 81 and the bevel gear 3 86 connected by the rotating shaft 83 are meshed and rotated inside the housing 85. The rotating shaft 83 is rotatably connected to the housing 85. The bevel gear 3 86 does not contact the bevel gear 2 82. The bottom end of the housing 85 is rotatably connected with a rotating column 88. The top of the rotating column 88 is provided with a bevel gear 4 87. The bevel gear 4 87 is meshed and connected with the bevel gear 3 86. The bevel gear 4 87 rotates in the opposite direction to the bevel gear 1 81. The rotating column 88 is rotatably connected to the driving end of the servo motor 6. The rotating column 88 is fixedly connected to the housing 85. The rotating column 88 drives the housing 85 and the driving end of the servo motor 6 to drive in the opposite direction. The blower 91 fixedly installed on the top of the starting housing 1 is driven, and the blower 91 delivers the wind to the inside of the sleeve 96 through the hose 92 connected to the output end.The wind inside the sleeve 96 is transported to the inside of the wind tube 93 through the rotating rod 131 to the connected inner cavity, so that the swing rod 84 drives the wind head 95 connected to the bottom of the wind tube 93 through the wind pipe 94 to swing to blow away the dust on the surface of the heat storage component 5. The surface of the heat storage component 5 can be blown away from multiple angles. Compared with the traditional fixed-direction soot blowing method, the coverage and effect of soot blowing are greatly improved, the smoke and dust attached to the surface of the heat storage component 5 are effectively removed, and the pressure difference on the side of the air duct caused by dust accumulation is reduced;

[0044] See also Figure 5 and Figure 7 As the air duct 94 swings and blows away the dust, the fixed ring 10 fixed on the surface of the air duct 94 is driven to swing, and the fixed ring 10 drives the swing brushes 11 fixedly connected on both sides to swing. As the swing brushes 11 swing, they contact the surface of the heat storage component 5, thereby cleaning the dust blocks adhered to the surface of the heat storage component 5, so that the surface of the heat storage component 5 is blocked by dust. For some stubborn dust blocks that are difficult to remove by soot blowing, the mechanical cleaning effect of the swing brush 11 can play a good supplementary effect. It can effectively loosen and remove these dust blocks, further improve the cleanliness of the surface of the heat storage component 5, prevent dust blocks from blocking the air duct, maintain the smooth circulation of air and smoke, reduce the resistance of the air duct, thereby reducing the side pressure difference, and also help to extend the service life of the heat storage component 5 and reduce the risk of equipment failure caused by dust accumulation and blockage;

[0045] See also Figure 5-7At the same time, the exhaust fan 121 fixedly installed on the top of the shell 1 is started to drive, so that the semi-circular ring shell 129 distributed on the top of the wind tube 93 absorbs the blown dust through a plurality of suction heads 1210 connected on the inner side. Due to the dust blowing on the surface of the heat storage component 5, the dust will be lifted upward and further absorbed into the inside of the ring shell 129. The suction force inside the ring shell 129 is realized by the exhaust fan 121. The ring shell 129 is connected and fixed to the shell 85 through a connecting plate 1212 on one side. The ring shell 129 moves in the opposite direction with the shell 85, the wind tube 93 and the heat storage component 5. The ring shell 129 transports the dust to the inside of the movable shell 125 through the connecting pipe 1211 connected to the top. The movable shell 125 slides in the groove 128. The movable shell 125 drives the slider 126 on one side to slide in the slide groove 127 with the reverse sliding of the shell 85. The movable shell 1 25 The dust is adsorbed into the interior of the treatment box 123 through the pipe 124 made of stretchable soft material connected to the top to isolate the dust, so as to prevent the dust from being sucked into the interior of the exhaust fan 121 through the suction pipe 122 connected to one side of the treatment box 123. The treatment box 123 is consistent with the principle of the existing dust collector, which is the prior art and will not be described in detail here. The real-time dust adsorption mechanism can capture the blown dust in time to prevent the dust from being re-deposited inside the air preheater, thus avoiding the aggravation of secondary pollution and dust accumulation problems. By effectively removing the dust from the system, not only the clean environment inside the air preheater is maintained, which is conducive to the stable progress of the heat exchange process, but also the wear and corrosion of dust on other components is reduced, further ensuring the reliable operation of the equipment, and also helping to maintain a low pressure difference on the air duct side, thereby improving the operating efficiency and stability of the entire system.

[0046] See also Figure 8-9As the wind tube 93 swings, the rotating rod 131 is driven to rotate, and the rotating rod 131 drives the bevel gear five 132 to rotate. The bevel gear five 132 is meshed with the bevel gear six 134. The bevel gear six 134 drives the driven shaft 135 to rotate. The driven shaft 135 is rotatably connected with the receiving block 133. The receiving block 133 is connected and fixed to the moving shell 125. The rotating rod 131 is rotatably connected with the receiving block 133. The driven shaft 135 drives a plurality of blowing heads 139 connected to one side of the long tube 136 to swing. The long tube 136 is fixedly connected to the moving shell 125 through a fixed sleeve block 138 sleeved on the surface. The wind inside the long tube 136 inputs the wind inside the moving shell 125 through a short tube 137 on one side. As the long tube 136 swings, the rotating rod 141 at the bottom is driven to rotate. The rotating rod 141 drives The movable bevel gear seven 142 meshes and rotates with the bevel gear eight 144, and the bevel gear eight 144 drives the roller brush 145 to swing to remove dust from the bottom end of the heat storage component 5. The rotating rod 141 is rotatably connected to the top block 143, and the top block 143 is fixedly connected to the box body 147. The box body 147 is fixedly connected to the inner wall of the shell 1 through the circular plate 15. The top of the box body 147 is symmetrically provided with guide plates 146, and the guide plates 146 expand the opening position of the box body 147. The inside of the box body 147 is slidably connected with a dust collecting drawer to facilitate dumping the collected dust. For the bottom end of the heat storage component 5, which is prone to dust accumulation and difficult to clean, the wind blown out by the long tube 136 can disturb the dust, making it easier to collect and clean, and the swing of the roller brush 145 can directly brush off and collect the dust at the bottom. This effective cleaning of the bottom end of the heat storage component 5 improves the dust removal system of the entire air preheater, ensures the cleanliness of all parts of the heat storage component 5, further reduces the pressure difference on the duct side caused by dust accumulation, and improves the circulation efficiency of air and flue gas, thereby improving the heat exchange performance and overall operating efficiency of the air preheater, extending the maintenance cycle of the equipment and reducing operating costs.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air preheater capable of reducing flue gas side pressure difference, comprising a shell (1), a flue gas channel (2), a primary air channel (3) and a secondary air channel (4) provided on the surface of the shell (1), and a heat storage component (5) rotatably connected to the inside of the shell (1), characterized in that: A servo motor (6) is arranged at the top of the housing (1); a driving end of the servo motor (6) extends into the interior of the housing (1); the driving end of the servo motor (6) is connected to the heat storage component (5); a driving structure (7) is arranged outside the driving end of the servo motor (6); a reversing linkage structure (8) is arranged on one side of the driving structure (7); dust blowing structures (9) are swingably connected to both sides of the reversing linkage structure (8); a dust collection structure (12) is arranged above the dust blowing structure (9); and a side blowing structure (13) is rotatably connected to one side of the dust collection structure (12); The driving structure (7) includes a rotating rod (76) rotatably connected to the outside of the driving end of the servo motor (6); The reverse linkage structure (8) comprises a bevel gear set arranged on one side of the rotating rod (76), swing rods (84) are arranged on both sides of the bevel gear set, and a rotating column (88) is arranged on the other side of the bevel gear set. The driving direction of the rotating column (88) is opposite to that of the servo motor (6). The outer side of the rotating column (88) is rotatably connected to a shell (85), and the shell (85) is slidably connected to the inner wall of the outer shell (1); The dust blowing structure (9) comprises a wind tube (93) arranged on one side of the swing rod (84), one side of the wind tube (93) is connected to an air duct (94), a plurality of air ducts (94) are distributed at equal intervals, the other side of the wind tube (93) is connected to a blower (91), and the blower (91) is fixedly mounted on the top of the housing (1); The dust collection structure (12) comprises an annular shell (129) arranged on one side of the shell (85), the diameter of the annular shell (129) is larger than the diameter of the air cylinder (93), the inner side of the annular shell (129) is connected to an air suction head (1210), a plurality of air suction heads (1210) are distributed at equal intervals, one side of the annular shell (129) is connected to a movable shell (125), the movable shell (125) is slidably connected to the outer shell (1), one side of the movable shell (125) is connected to an exhaust fan (121), and the exhaust fan (121) is fixedly installed on the top of the outer shell (1); The side blowing structure (13) comprises a long tube (136) rotatably connected to one side of the movable shell (125), a blowing head (139) is connected to one side of the long tube (136) close to the heat storage component (5), and a plurality of blowing heads (139) are evenly spaced.

2. The air preheater capable of reducing flue gas side pressure difference according to claim 1, characterized in that: The driving structure (7) further comprises a ratchet (71) arranged on the outside of the driving end of the servo motor (6), and the driving structure (7) further comprises a round shell (75) rotatably connected to the surface of the driving end of the servo motor (6), a fixing rod (73) is arranged on one side of the round shell (75), a ratchet (72) is rotatably connected to the outside of the fixing rod (73), a spring (74) is arranged on one side of the ratchet (72), and an end of the spring (74) away from the ratchet (72) is connected to the round shell (75).

3. The air preheater capable of reducing flue gas side pressure difference according to claim 1, characterized in that: The bevel gear set comprises a bevel gear 1 (81) arranged on the outside of the rotating rod (76); the housing (85) is rotatably connected to the swing rod (84); a bevel gear 2 (82) is arranged on one side of the swing rod (84); two groups of bevel gears 2 (82) are meshed with the bevel gear 1 (81); two groups of bevel gears 2 (82) are symmetrically distributed about the bevel gear 1 (81); both groups of bevel gears 2 (82) are semi-gear structures; a spring (89) is sleeved on the surface of the swing rod (84); one end of the spring (89) is connected to the housing (85); the bevel gear set further comprises a rotating shaft (83) rotatably connected to the inside of the housing (85); one end of the rotating shaft (83) is arranged with a bevel gear 3 (86); a bevel gear 4 (87) is arranged on the outside of the rotating column (88); the bevel gear 4 (87) is meshed with the bevel gear 3 (86).

4. The air preheater capable of reducing flue gas side pressure difference according to claim 1, characterized in that: The dust collection structure (12) further comprises an air suction pipe (122) connected to one end of the exhaust fan (121); one end of the air suction pipe (122) is connected to a processing box (123); the processing box (123) is fixedly mounted on the top of the outer shell (1); the processing box (123) is used to isolate dust from entering the interior of the exhaust fan (121); one side of the processing box (123) is connected to a pipe (124); the pipe (124) extends to the interior of the outer shell (1); and the pipe (124) is connected to a movable shell (125).

5. The air preheater capable of reducing flue gas side pressure difference according to claim 4, characterized in that: The inner wall of the outer shell (1) is provided with a slide groove (127), and a slider (126) is slidably connected inside the slide groove (127), and the slider (126) is connected to the movable shell (125). The inner wall of the outer shell (1) is also provided with a groove (128), and the groove (128) is connected to the slide groove (127), and the movable shell (125) slides in the groove (128). The top end of the annular shell (129) is connected with a connecting pipe (1211), and the connecting pipe (1211) is connected to the movable shell (125). A connecting plate (1212) is provided on one side of the annular shell (129) and is connected and fixed to the shell body (85).

6. The air preheater capable of reducing flue gas side pressure difference according to claim 1, characterized in that: The side-blowing structure (13) comprises a receiving block (133) arranged on one side of the moving shell (125); one side of the receiving block (133) is rotatably connected to a rotating rod (131); a bevel gear five (132) is arranged on the outer side of the rotating rod (131); the other side of the receiving block (133) is rotatably connected to a driven shaft (135); a bevel gear six (134) is arranged on the outer side of the driven shaft (135); and the bevel gear five (132) is meshingly connected with the bevel gear six (134).

7. The air preheater capable of reducing flue gas side pressure difference according to claim 6, characterized in that: The driven shaft (135) is connected to a long tube (136), a fixed sleeve block (138) is sleeved on the surface of the long tube (136), the fixed sleeve block (138) is connected and fixed to the moving shell (125), and a short tube (137) is connected to one side of the long tube (136), and the short tube (137) is connected to the moving shell (125).

8. The air preheater capable of reducing flue gas side pressure difference according to claim 6, characterized in that: The output end of the blower (91) is connected to a hose (92), the hose (92) extends into the interior of the housing (1), one end of the hose (92) close to the wind tube (93) is connected to a sleeve (96), the sleeve (96) is rotatably connected to the rotating rod (131), the interior of the sleeve (96) is a hollow structure, the half of the rotating rod (131) close to the wind tube (93) is a cavity, the rotating rod (131) is fixedly connected to the wind tube (93), and the cavity of half of the rotating rod (131) is in communication with the inner cavity of the wind tube (93).

9. The air preheater capable of reducing flue gas side pressure difference according to claim 8, characterized in that: One end of the air duct (94) away from the air cylinder (93) is connected to a wind head (95), and the wind head (95) is used to clean dust accumulated on the top surface of the heat storage component (5). A fixing ring (10) is fixedly installed on the outer side of each air duct (94), and swing brushes (11) are symmetrically arranged on both sides of the fixing ring (10), and the two groups of swing brushes (11) are distributed in an "eight" shape.

10. The air preheater capable of reducing flue gas side pressure difference according to claim 1, characterized in that: A circular plate (15) is arranged at the inner bottom end of the housing (1), and the circular plate (15) is rotatably connected to the driving end of the servo motor (6). A roller brush dust collecting structure (14) is arranged on one side of the long tube (136), and the roller brush dust collecting structure (14) comprises a rotating rod (141) arranged at the bottom end of the long tube (136), and a bevel gear (142) is arranged on the outer side of the rotating rod (141). A box body (147) is fixedly installed at the top end of the circular plate (15), and a dust collecting wheel (147) is slidably connected to the inside of the box body (147). The box body (147) is provided with guide plates (146) symmetrically on both sides of the top end, the guide plates (146) are inclined, a top block (143) is provided at the top end of the box body (147), the rotating rod (141) is rotatably connected to the top block (143), a roller brush (145) is rotatably connected to the other side of the top block (143), a bevel gear eight (144) is provided on the side of the roller brush (145) close to the bevel gear seven (142), and the bevel gear seven (142) is meshedly connected with the bevel gear eight (144).

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