Furnace arch soot blower

Abstract

The invention relates to the technical field of boiler soot blowing devices, in particular to a furnace arch soot blowing device which comprises an air inlet pipe A, a deep groove ball bearing, an air inlet pipe B, a rotating part and an arc-shaped air knife, an outer ring of the deep groove ball bearing is sleeved with the air inlet pipe A, an inner ring of the deep groove ball bearing is slidably sleeved with the air inlet pipe B, and a sealing cover is installed at the top of the outer ring of the deep groove ball bearing; an inner ring of the sealing cover is in sliding connection with an inner ring of the deep groove ball bearing, the bottom of the rotating piece communicates with one end of the air inlet pipe B. One end of the arc-shaped air knife penetrates into the rotating piece and communicates with the rotating piece, and an air outlet is formed in the other end of the arc-shaped air knife. The rotating part and the arc-shaped air knife can rotate at the same time to repeatedly clean accumulated dust, the dust cleaning roller brush can clean the bottom of the arc-shaped air knife, namely dust blowing dead corners, and the sound wave detection mechanism is convenient for a user to observe and flexibly decides when to clean the accumulated dust.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler soot blowing devices, and particularly to a soot blowing device for a flame deflecting angle. Background Art

[0002] Existing coal-fired boilers are all designed with a flame deflecting angle, whose functions are to make the distribution of the furnace flame more uniform, improve the scouring degree of the high-temperature flue gas in the furnace on the heating surface at the furnace outlet, reduce the dead zone in the upper part of the furnace, and can extend the horizontal flue of the boiler, facilitating the arrangement of more high-temperature convective heating surfaces and increasing the proportion of the working medium's superheat heat absorption. When the flue gas at the lower part of the flame deflecting angle at the furnace outlet enters the upper part of the horizontal flue, it makes a sharp turn, forming an obvious recirculation zone. The pressure in this area is significantly lower than that in other mainstream areas. When the fly ash carried by the flue gas flows through this area, due to the reduction of the flue gas flow rate and the recirculation effect, the heavy fly ash is separated and deposited, accumulating on the slope of the flame deflecting angle. Therefore, the structural characteristics of the flame deflecting angle will inevitably lead to the easy deposition of fly ash in this area.

[0003] In the existing large-scale power plant boilers that have been put into operation, there are varying degrees of ash accumulation in this part. If the boilers in thermal power plants burn low calorific value, low volatile and poor-quality anthracite, the flue gas contains a large amount of fly ash, causing the heating surfaces at the lower parts of the high-temperature convective superheater and high-temperature reheater in this area to be buried by ash accumulation. During operation, the furnace negative pressure often fluctuates violently due to ash collapse and the coal fire detector fails, leading to the full furnace extinction of the unit. This poses a serious threat to the safe operation of the boiler.

[0004] At present, there are two types of soot blowers commonly used on the slope of the flame deflecting angle in thermal power plants, namely external acoustic soot blowers and steam soot blowers. The defects of the existing soot blowers are analyzed below.

[0005] 1. Defects in installing an external acoustic soot blower at the slope of the flame deflecting angle:

[0006] (1) The energy is small, and for the furnace and convective heating surfaces, sticky ash accumulation, severe ash blockage, and hard ash scale cannot be removed.

[0007] (2) The action distance is limited. Since it can only be installed on the water-cooled wall of the side wall of the flame deflecting angle, the number of acoustic soot blowers to be installed is more than that of traditional soot blowers; the installation of acoustic soot blowers with a sound amplification structure is restricted in high-temperature areas.

[0008] 2. Defects in installing a steam soot blower at the slope of the flame deflecting angle:

[0009] (1) The reliability of the soot blower is poor. Since the barrel of the soot blower is relatively long and the steam cooling effect is relatively poor, the rigidity of the soot blower is insufficient. When the soot blower runs through the entire stroke, it swings too much and is prone to jamming and other faults during the retraction process. Once the barrel is bent, the soot blower cannot continue to be put into operation.

[0010] (2) Poor maintainability and high maintenance cost. To avoid jamming of the soot blower, when soot blowing the slope part of the arch flame angle, the operator often manually withdraws the soot blower before it completes the entire stroke, which affects the soot blowing effect on the middle part of the slope of the arch flame angle. Moreover, the faulty soot blower can only be repaired during the unit shutdown. The gun barrel inside the furnace is bent and deformed, and it is difficult to repair the original gun barrel again, so it needs to be replaced, increasing the maintenance cost.

[0011] (3) The soot blowers at the slope part of the arch flame angle have many faults and the soot blowing frequency fails to meet the requirements.

[0012] The above two types of soot blowers are very likely to cause ash accumulation to form a pile in the middle part of the slope of the arch flame angle and gradually develop towards both sides. When the ash reaches a certain height and is disturbed, it will suddenly collapse, causing a large fluctuation in the furnace negative pressure. In severe cases, it is easy to produce situations such as a black furnace, loss of flame detectors, and boiler trip.

[0013] Therefore, how to set up a structure with strong reliability, high soot blowing efficiency, and capable of cleaning the ash accumulation at the bottom of the soot blowing device at the same time has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0014] The present invention provides an arch flame angle soot blowing device to solve the problem of how to set up a structure with strong reliability, high soot blowing efficiency, and capable of cleaning the ash accumulation at the bottom of the soot blowing device at the same time.

[0015] The present invention provides an arch flame angle soot blowing device, including:

[0016] Air inlet pipe A;

[0017] Deep groove ball bearing, and the air inlet pipe A is sleeved on the outer ring of the deep groove ball bearing;

[0018] Air inlet pipe B, which is slidably sleeved inside the inner ring of the deep groove ball bearing, and a sealing cover is installed on the top of the outer ring of the deep groove ball bearing, and the inner ring of the sealing cover is slidably connected to the inner ring of the deep groove ball bearing;

[0019] Rotating part, the bottom of which is communicated with one end of the air inlet pipe B;

[0020] Arc-shaped air knife, one end of which extends into the inside of the rotating part and is communicated with the inside of the rotating part, and the other end is provided with an air outlet.

[0021] In some embodiments, the arc-shaped air knife includes:

[0022] Air knife body, a gas storage chamber and an air outlet chamber are arranged inside the air knife body, the volume of the gas storage chamber is larger than that of the air outlet chamber, and the air outlet is opened on the side of the air knife body close to the air outlet chamber.

[0023] In some of these embodiments, multiple sets of arc-shaped air knives are provided and are circumferentially and uniformly arranged on the outer periphery of the rotating member.

[0024] In some of these embodiments, it further includes: an arc-shaped air knife angle adjustment mechanism, which is arranged at the connection between the arc-shaped air knife and the rotating member and is used to adjust the spraying angle of the arc-shaped air knife.

[0025] In some of these embodiments, the arc-shaped air knife angle adjustment mechanism includes:

[0026] A spring, a cavity is formed inside the side wall of the rotating member, and one end of the cavity is connected to one end of the spring;

[0027] A sliding plate, which is slidably connected inside the cavity, and one side is connected to the other end of the spring, and the other side is connected to the arc-shaped air knife. The side of the arc-shaped air knife away from the spring is rotatably connected to the rotating member;

[0028] An electric telescopic rod, one end of which is installed at the edge of the inner ring of the deep groove ball bearing, the other end extends into the interior of the rotating member, and is connected to the side of the arc-shaped air knife located inside the rotating member. The electric telescopic rod is electrically connected to an external control terminal.

[0029] In some of these embodiments, it further includes a cleaning mechanism, which is installed at the bottom of the arc-shaped air knife and is used to clean the dust accumulated at the bottom of the arc-shaped air knife.

[0030] In some of these embodiments, the cleaning mechanism includes:

[0031] A bracket, which is installed at the bottom of the arc-shaped air knife;

[0032] A dust cleaning roller brush, which is rotatably connected to the bottom of the bracket, and the bristles of the dust cleaning roller brush are in contact with the furnace wall.

[0033] In some of these embodiments, it further includes: an acoustic wave detection mechanism, which is installed on the outer side of the furnace wall and is used to detect the thickness and position of the accumulated dust.

[0034] In some of these embodiments, the acoustic wave detection mechanism includes:

[0035] A signal generator;

[0036] An acoustic wave generator, which is installed on the outer side of the furnace wall and is electrically connected to the signal generator;

[0037] An acoustic wave receiver, which is installed on the outer side of the furnace wall and is electrically connected to the acoustic wave generator;

[0038] A data acquisition card, the input end of which is electrically connected to the acoustic wave receiver, and the output end is electrically connected to the control terminal.

[0039] In some of these embodiments, the side of the air inlet pipe A away from the furnace wall is communicated with an external high-pressure air source.

[0040] The beneficial effects of the present invention are as follows: When the soot blowing device with a flame deflecting angle of the present invention is cleaning soot, first, high-pressure gas is introduced into the inside of the air inlet pipe A through a high-pressure gas source. The high-pressure gas sequentially passes through the air inlet pipe A, the inner ring of the deep groove ball bearing, and the air inlet pipe B and is input into the inside of the rotating member. Then, the high-pressure gas in the rotating member enters the air storage chamber of the air knife body, is accelerated through the air outlet chamber, and finally discharged from the air outlet. At the same time, four groups of arc-shaped air knives are circumferentially arranged in the technical solution of the present invention, that is, corresponding to four air outlets. The four air outlets jet gas simultaneously, which can make the rotating member and the arc-shaped air knives rotate simultaneously to repeatedly clean the accumulated ash. At the same time, the cleaning roller brush arranged at the bottom of the arc-shaped air knife will also rotate synchronously with the arc-shaped air knife to clean the bottom of the arc-shaped air knife, that is, the dead angle of soot blowing, to prevent ash accumulation at the bottom of the arc-shaped air knife. In the technical solution of the present invention, a sound wave detection mechanism is also used to detect the thickness and position of the accumulated ash, which is convenient for the user to observe and flexibly determine when to clean the accumulated ash. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic structural diagram of a soot blowing device with a flame deflecting angle of the present invention;

[0042] Figure 2 is Figure 1 a schematic structural diagram of a perspective view of an arc-shaped air knife angle adjustment mechanism in a soot blowing device with a flame deflecting angle shown in;

[0043] Figure 3 is Figure 1 a schematic structural diagram of an arc-shaped air knife in a soot blowing device with a flame deflecting angle shown in;

[0044] Figure 4 is Figure 1 a schematic structural diagram of another perspective view of an arc-shaped air knife angle adjustment mechanism in a soot blowing device with a flame deflecting angle shown in;

[0045] In the drawings, 1, air inlet pipe A; 2, deep groove ball bearing; 3, air inlet pipe B; 4, rotating member; 5, arc-shaped air knife; 51, air knife body; 52, air storage chamber; 53, air outlet chamber; 6, arc-shaped air knife angle adjustment mechanism; 61, spring; 62, sliding plate; 63, electric telescopic rod; 7, cleaning mechanism; 71, bracket; 72, cleaning roller brush; 8, sound wave detection mechanism; 81, sound wave generator; 82, sound wave receiver. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0047] As described in the background art, there are currently two types of soot blowers commonly used in thermal power plants for the platen superheater slope, namely external acoustic soot blowers and steam soot blowers. The defects of the existing soot blowers are analyzed below.

[0048] 1. Defects in installing external acoustic soot blowers at the platen superheater slope:

[0049] (1) The energy is relatively small, and for the furnace and convective heating surfaces, sticky ash deposits, severe ash blockages, and hard ash scales cannot be removed.

[0050] (2) The action distance is limited. Since it can only be installed on the water-cooled wall of the side wall of the platen superheater, more units of acoustic soot blowers need to be installed than traditional soot blowers; the installation of acoustic soot blowers with sound amplification structures is restricted in high-temperature areas.

[0051] 2. Defects in installing steam soot blowers at the platen superheater slope:

[0052] (1) The reliability of the soot blower is poor. Since the barrel of the soot blower is relatively long and the steam cooling effect is relatively poor, the rigidity of the soot blower is insufficient. When the soot blower completes the entire stroke, it swings too much and is prone to jamming and other failures during the retraction process. Once the barrel is bent, the soot blower cannot continue to operate.

[0053] (2) The economy of maintenance and overhaul is poor. To avoid jamming of the soot blower, when blowing soot at the platen superheater slope, the operator often manually retracts the soot blower before it completes the entire stroke, which affects the soot blowing effect on the middle part of the platen superheater slope. Moreover, the faulty soot blower can only be repaired during the unit outage. The barrel inside the furnace is bent and deformed, and the original barrel is very difficult to repair again and needs to be replaced, increasing the overhaul cost.

[0054] (3) There are many failures of the soot blower at the platen superheater slope, and the soot blowing frequency cannot meet the requirements.

[0055] The above two types of soot blowers are very likely to cause ash deposits to accumulate in the middle part of the platen superheater slope and gradually spread to both sides. When the ash deposit reaches a certain height, it will suddenly collapse when disturbed, causing a large fluctuation in the furnace negative pressure. In severe cases, it is easy to produce situations such as a black furnace, loss of flame detectors, and boiler trips.

[0056] Therefore, how to set up a structure with strong reliability, high soot blowing efficiency, and capable of cleaning the ash deposits at the bottom of the soot blowing device at the same time has become a technical problem that needs to be solved urgently by those skilled in the art.

[0057] To solve the above problems, referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4, the present invention provides a re-entrant angle soot blower, which includes an air inlet pipe A1, a deep groove ball bearing 2, an air inlet pipe B3, a rotating member 4 and an arc-shaped air knife 5. The air inlet pipe A1 is sleeved on the outer ring of the deep groove ball bearing 2. The air inlet pipe B3 is slidably sleeved inside the inner ring of the deep groove ball bearing 2. A sealing cover is installed on the top of the outer ring of the deep groove ball bearing 2. The inner ring of the sealing cover is slidably connected to the inner ring of the deep groove ball bearing 2. The bottom of the rotating member 4 is communicated with one end of the air inlet pipe B3. One end of the arc-shaped air knife 5 extends into the inside of the rotating member 4 and is communicated with the inside of the rotating member 4, and the other end is provided with an air outlet.

[0058] Specifically, the sealing cover is of an annular structure and is slidably connected to the edge of the inner ring of the deep groove ball bearing 2 to ensure the sealing effect and prevent high-pressure gas from overflowing between the outer ring and the inner ring of the deep groove ball bearing 2.

[0059] Preferably, the arc-shaped air knife 5 includes: an air knife body 51, a gas storage chamber 52 and an air outlet chamber 53 are arranged inside the air knife body 51. The volume of the gas storage chamber 52 is larger than that of the air outlet chamber 53, and the air outlet is opened on one side of the air knife body 51 close to the air outlet chamber 53.

[0060] Specifically, the high-pressure gas contained in the gas storage chamber 52 is more than that in the air outlet chamber 53, and the surface connecting the two chambers is of an arc-shaped structure, which ensures the smooth transportation of high-pressure gas. According to the Venturi effect, when the high-pressure gas flows from the gas storage chamber 52 to the air outlet chamber 53, its flow rate can be significantly increased, and finally a high-speed air flow is ejected through the air outlet. The higher-speed air flow can clean a larger range of ash deposits. Therefore, compared with the prior art, the soot blower of the present invention can be set fewer, saving costs and reducing the workload of maintenance.

[0061] Preferably, a plurality of arc-shaped air knives 5 are provided and are circumferentially and evenly arranged on the outer periphery of the rotating member 4.

[0062] Specifically, the arrangement of a plurality of arc-shaped air knives 5 can further increase the rotation speed of the arc-shaped air knives 5 and further improve the ash cleaning effect.

[0063] Preferably, it further includes: an arc-shaped air knife angle adjustment mechanism 6, which is arranged at the connection between the arc-shaped air knife 5 and the rotating member 4 and is used to adjust the spraying angle of the arc-shaped air knife 5.

[0064] Preferably, the arc-shaped air knife angle adjustment mechanism 6 includes: a spring 61, a sliding plate 62, and an electric telescopic rod 63. A cavity is formed inside the side wall of the rotating member 4. One end of the spring 61 is connected to the inside of the cavity. The sliding plate 62 is slidably connected to the inside of the cavity, and one side thereof is connected to the other end of the spring 61, and the other side is connected to the arc-shaped air knife 5. The side of the arc-shaped air knife 5 away from the spring 61 is rotatably connected to the rotating member 4. One end of the electric telescopic rod 63 is installed at the edge of the inner ring of the deep groove ball bearing 2, and the other end extends into the inside of the rotating member 4 and is connected to one side of the arc-shaped air knife 5 located inside the rotating member 4. The electric telescopic rod 63 is electrically connected to an external control terminal.

[0065] Specifically, when it is necessary to clean the accumulated ash at a short distance, the electric telescopic rod 63 is controlled by the control terminal to extend, so that the air outlet of the arc-shaped air knife 5 faces downward. The sliding plate 62 compresses the spring 61 to maintain stability, and then the accumulated ash is cleaned at high speed. If it is necessary to clean the accumulated ash at a slightly longer distance or in a larger range, the electric telescopic rod 63 is controlled by the control terminal to contract, so that the air outlet of the arc-shaped air knife 5 faces upward to clean the accumulated ash. At the same time, in practical applications, the arc-shaped air knife angle adjustment mechanism 6 provided in the present invention can make the air outlet of the arc-shaped air knife 5 in the present invention face downward and then gradually lift to perform step-by-step cleaning in the case of a large amount of accumulated ash and difficult to clean in a large range.

[0066] Preferably, a cleaning mechanism 7 is further included, which is installed at the bottom of the arc-shaped air knife 5 and is used to clean the accumulated ash at the bottom of the arc-shaped air knife 5.

[0067] Preferably, the cleaning mechanism 7 includes: a bracket 71 and a dust cleaning roller brush 72. The bracket 71 is installed at the bottom of the arc-shaped air knife 5. The dust cleaning roller brush 72 is rotatably connected to the bottom of the bracket 71, and the bristles of the dust cleaning roller brush 72 are in contact with the furnace wall.

[0068] Specifically, the structure of the arc-shaped air knife 5 rotating and blowing ash in the present invention does not require external drive. At the same time, the rotating arc-shaped air knife 5 can also drive the dust cleaning roller brush 72 at its bottom to move synchronously. The bottom of the arc-shaped air knife 5 is the dead angle of its blowing ash. If it is not cleaned for a long time, it may cause the rotating components in the present invention to get stuck. Therefore, the dust cleaning roller brush 72 can clean the accumulated ash at the bottom of the arc-shaped air knife 5 synchronously when the arc-shaped air knife 5 is blowing ash, avoiding the accumulation of ash, and this setting also extends the maintenance cycle of the device of the present invention.

[0069] Preferably, a sound wave detection mechanism 8 is further included, which is installed outside the furnace wall and is used to detect the thickness and position of the accumulated ash.

[0070] Preferably, the acoustic wave detection mechanism 8 includes a signal generator, an acoustic wave generator 81, an acoustic wave receiver 82, and a data acquisition card. The acoustic wave generator 81 is installed on the outer side of the furnace wall and is electrically connected to the signal generator. The acoustic wave receiver 82 is installed on the outer side of the furnace wall and is electrically connected to the acoustic wave generator 81. The input end of the data acquisition card is electrically connected to the acoustic wave receiver 82, and the output end is electrically connected to the control terminal.

[0071] Specifically, when using the acoustic wave detection mechanism 8 to check the ash accumulation position and thickness, first, the signal generator transmits a signal. The acoustic wave generator 81 emits acoustic waves into the furnace body. After the acoustic waves encounter the ash accumulation, they reflect acoustic waves, which are finally collected by the data acquisition card and transmitted to the control terminal for analysis, enabling the user to clarify the ash accumulation position and thickness inside the furnace body.

[0072] Preferably, one side of the air inlet pipe A1 away from the furnace wall is communicated with an external high-pressure air source.

[0073] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0074] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0075] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] In the present invention, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0077] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A sootblowing device for a flame deflecting angle, characterized in that, Comprising: Air inlet pipe A (1); Deep groove ball bearing (2), the air inlet pipe A (1) is sleeved on the outer ring of the deep groove ball bearing (2); Air inlet pipe B (3), slidably sleeved inside the inner ring of the deep groove ball bearing (2), and a sealing cover is installed on the top of the outer ring of the deep groove ball bearing (2), and the inner ring of the sealing cover is slidably connected to the inner ring of the deep groove ball bearing (2); Rotating member (4), the bottom is communicated with one end of the air inlet pipe B (3); Arc-shaped air knife (5), one end penetrates into the inside of the rotating member (4) and is communicated with the inside of the rotating member (4), and the other end is provided with an air outlet.

2. The sootblowing device with a flame deflecting angle according to claim 1, characterized in that The arc-shaped air knife (5) includes: Air knife body (51), a gas storage chamber (52) and an air outlet chamber (53) are arranged inside the air knife body (51), the volume of the gas storage chamber (52) is larger than the volume of the air outlet chamber (53), and the air outlet is arranged on the side of the air knife body (51) close to the air outlet chamber (53).

3. The sootblowing device for the flame deflecting angle according to claim 1, characterized in that, Multiple groups of the arc-shaped air knives (5) are provided, and are circumferentially and uniformly arranged on the outer periphery of the rotating member (4).

4. The sootblowing device for the flame deflecting angle according to claim 1, wherein, Also included: Arc-shaped air knife angle adjustment mechanism (6), arranged at the connection between the arc-shaped air knife (5) and the rotating member (4), for adjusting the spraying angle of the arc-shaped air knife (5).

5. The sootblowing device with a flame deflecting angle according to claim 4, characterized in that The arc-shaped air knife angle adjustment mechanism (6) includes: Spring (61), a cavity is opened inside the side wall of the rotating member (4), and one end of the spring (61) is connected to the inside of the cavity; Sliding plate (62), slidably connected inside the cavity, one side is connected to the other end of the spring (61), the other side is connected to the arc-shaped air knife (5), and the side of the arc-shaped air knife (5) away from the spring (61) is rotatably connected to the rotating member (4); Electric telescopic rod (63), one end is installed on the edge of the inner ring of the deep groove ball bearing (2), the other end extends into the inside of the rotating member (4), and is connected to the side of the arc-shaped air knife (5) inside the rotating member (4), and the electric telescopic rod (63) is electrically connected to an external control terminal.

6. The soot blower device with a flame deflecting angle according to claim 1, characterized in that, Also included is a cleaning mechanism (7), installed at the bottom of the arc-shaped air knife (5), for cleaning the dust accumulated at the bottom of the arc-shaped air knife (5).

7. The soot blower device with a flame deflecting angle according to claim 6, characterized in that, The cleaning mechanism (7) includes: Bracket (71), installed at the bottom of the arc-shaped air knife (5); Ash cleaning roller brush (72), rotatably connected to the bottom of the bracket (71), and the bristles of the ash cleaning roller brush (72) are in contact with the furnace wall.

8. The sootblowing device with a flame deflecting angle according to claim 5, characterized in that, Also included: Acoustic wave detection mechanism (8), installed on the outer side of the furnace wall, for detecting the thickness and position of the accumulated ash.

9. The sootblowing device with a flame deflecting angle according to claim 8, characterized in that The acoustic wave detection mechanism (8) includes: Signal generator; Acoustic wave generator (81), installed on the outer side of the furnace wall and electrically connected to the signal generator; Acoustic wave receiver (82), installed on the outer side of the furnace wall and electrically connected to the acoustic wave generator (81); Data acquisition card, the input end is electrically connected to the acoustic wave receiver (82), and the output end is electrically connected to the control terminal.

10. The soot blower device with a flame deflecting angle according to claim 1, characterized in that, The side of the air inlet pipe A (1) away from the furnace wall is communicated with an external high-pressure air source.

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