CN107289456B

CN107289456B - Soot blower for rotary air preheater

Info

Publication number: CN107289456B
Application number: CN201710709686.5A
Authority: CN
Inventors: 霍建松
Original assignee: Fujiteng Fluid Technology Tianjin Co ltd
Current assignee: Fujiteng Fluid Technology Tianjin Co ltd
Priority date: 2017-08-17
Filing date: 2017-08-17
Publication date: 2023-06-02
Anticipated expiration: 2037-08-17
Also published as: CN107289456A

Abstract

The invention provides a soot blower for a rotary air preheater, which belongs to the field of environmental protection equipment and comprises a rotary driving assembly and a blowing assembly, wherein the blowing assembly is rotationally connected with the rotary driving assembly and comprises a first hollow rod vertically arranged and a second hollow rod horizontally arranged, the upper end of the first hollow rod is vertically arranged with one end of the second hollow rod and is internally communicated with the second hollow rod, the lower end of the first hollow rod is in sealing connection with a high-pressure water pump, the two ends of the second hollow rod are respectively in sealing arrangement, one end of the second hollow rod, which is far away from the first hollow rod, is provided with a plurality of third hollow rods vertically upwards, the inside of each third hollow rod is communicated with the inside of the second hollow rod, and the upper end of each third hollow rod is provided with a nozzle assembly. The invention has good cleaning effect, safety and high efficiency.

Description

Soot blower for rotary air preheater

Technical Field

The invention belongs to the field of environmental protection equipment, relates to high-pressure cleaning equipment, and particularly relates to a soot blower for a rotary air preheater.

Background

With the development of economy, the damage to the environment is bigger and bigger, and the harm is more and more obvious, so the national requirements on environmental protection are higher and higher, and each power plant and heating company can be required to carry out-of-sale transformation on a thermal power unit in recent years, thereby changing the operation working condition of the air preheater, bringing problems of ash blocking and corrosion and even affecting the operation of the whole boiler. The cold end of the air preheater is blocked due to the fact that the sulfur content of coal is too high, the ammonia escape rate exceeds standard, the weather is abnormally low, and the like. Under the condition, the problem of air preheater blockage must be solved, and the common transformation is to add high-pressure water on-line washing mode at the cold end of the air preheater, which has low on-line washing efficiency, potential safety hazard, and too high cost if shutdown for washing.

Disclosure of Invention

The invention aims to solve the problem of providing a blowing structure for a soot blower, which is used in a rotary air preheater and has high safety and high blowing efficiency.

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a soot blower for rotary air preheater, includes rotary drive subassembly and jetting subassembly, the jetting subassembly with rotary drive subassembly rotates to be connected, the jetting subassembly includes the first hollow pole of vertical setting and the second hollow pole that the level set up, the upper end of first hollow pole with the one end of second hollow pole sets up perpendicularly and the inside intercommunication of two, the lower extreme and the high-pressure water pump sealing connection of first hollow pole, the both ends of second hollow pole are all sealed to be set up, the second hollow pole is kept away from the one end of first hollow pole is equipped with a plurality of vertical ascending third hollow poles, the inside of third hollow pole with the inside intercommunication of second hollow pole, every the upper end of third hollow pole all is equipped with nozzle assembly.

Further, the rotary driving assembly comprises a first sprocket, a second sprocket, a motor and a positioning assembly, the motor drives the first sprocket to rotate through a speed reducer, the first sprocket drives the second sprocket to rotate through a chain, the second sprocket is fixed on a blowing assembly of the soot blower, the positioning assembly and the second sprocket are coaxially arranged and rotationally connected with the blowing assembly, the positioning assembly comprises a positioning cylinder, two tapered roller bearings used in pairs are arranged in the positioning cylinder and distributed at two ends, two deep groove ball bearings used in pairs are arranged in the middle of the positioning cylinder, and the adjacent deep groove ball bearings or the adjacent deep groove ball bearings and the tapered roller bearings are positioned through a positioning ring and a spacer sleeve.

Further, still include the base, the base includes the bottom plate, the both ends of bottom plate up end are equipped with first support column and second support column perpendicularly, the speed reducer is fixed on the first support column, locating component fixes on the second support column, the height of second support column is less than the height of first support column, the lower extreme of second support column is equipped with keeps away the position cavity.

Further, the pitch circle diameter ratio of the first sprocket to the second sprocket is 1:2, the output rotating speed of the motor after passing through the speed reducer is 1 revolution per minute, and the speed reducer is of a multistage turbine worm speed reducing structure.

Further, the inner diameter of the first hollow rod is the same as the inner diameter of the second hollow rod, the inner diameter of the first hollow rod and the second hollow rod are both processed by martensite or austenite materials, and the inner diameter of the third hollow rod is 1/10-1/12 of the inner diameter of the second hollow rod.

Further, a supporting rod is arranged at the lower end of the middle part of the second hollow rod, a groove-shaped fixing frame with a downward opening is arranged at the lower end of the supporting rod, a pulley is connected with the middle part of the lower end of the fixing frame in a rotating mode through a fixing shaft, and the pulley is in contact with the ground.

Further, the nozzle assembly comprises a connector, a pressing head and a spray head, wherein the connector is fixedly connected with the upper end of the third hollow rod through conical threads, the lower end of the spray head is embedded into the upper end of the connector, and the pressing head penetrates through the upper end of the spray head and the upper end of the connector through threads.

Further, a sealing ring is arranged between the spray head and the upper end face of the connector.

Further, the spray head comprises a cylindrical inner cavity and a conical inner cavity which are sequentially connected from top to bottom, the diameter of the cylindrical inner cavity is 2-4 mm, the diameter of the lower end of the conical inner cavity is the same as the inner diameter of the third hollow rod, and the height of the conical inner cavity is 4.5-5 times of the height of the cylindrical inner cavity.

Further, the connector includes by last first constant head tank, first cooperation chamber and the transitional pore that sets up down, the shower nozzle becomes well font structure, including by last first reference column, second reference column and the third reference column that sets up down, the clamp head includes by last second cooperation chamber and the second constant head tank that sets up down, the third reference column is established first cooperation intracavity, the lower extreme of second reference column is established in the first constant head tank, the upper end is established in the second constant head tank, first reference column is established in the second cooperation intracavity, the diameter of transitional pore with the internal diameter of third hollow pole equals.

Compared with the prior art, the invention has the advantages and positive effects that: 1. according to the invention, the rotation of the blowing component in the air preheater can be realized, a certain angle can be formed between the blowing component and the fan blade in the blowing process, the shearing force of dust on the fan blade is greatly increased, the blowing effect is improved, 360-degree blowing is realized, the blowing component can be placed in the air preheater through a manhole on the air preheater, liquid or other cleaning liquid is introduced through a high-pressure water pump, finally the fan blade is blown upwards through a nozzle component, the cleaning and dust removing effects are achieved, the mechanical operation is high, the safety is high, the blowing flow can reach 250L/min, and the pressure can reach 50-60 MPa; 2. the supporting rod can improve the strength of the second hollow rod, and the pulley is beneficial to reducing the friction force with the ground and the energy loss of the maximum force in the rotating process of the second hollow rod; 3. the nozzle component is internally provided with the connector, the pressing head and the nozzle, the connector, the pressing head and the nozzle are installed and fixed in a superposition way, the installation firmness of the nozzle is strong, the nozzle can work stably under high-pressure water pressure, and the safety and the reliability are high; 4. setting the height ratio and the inner diameter range of a cylindrical inner cavity and a conical inner cavity in the spray head, fully utilizing the water pressure principle, further improving the spraying pressure by utilizing a mechanical structure, and ensuring the spraying effect; 5. the tapered roller bearing can bear radial force and axial force, can ensure smooth rotation, can bear the radial force of the injection assembly after the assembly is completed, and is matched with the deep groove ball bearing, so that the axial smooth rotation is ensured, the whole structure connection is more stable and reliable, the rotation of the injection assembly is ensured, the speed is reduced after the motor passes through the speed reducer, and the torque is greatly improved; 6. the speed reducer adopts a multi-stage worm and gear speed reducing structure, can set a large-scale speed reducing ratio, meets the requirement of slow-speed quasi-rotation, and greatly improves the torque; 7. the frequency converter is arranged, so that the speed adjustment is more convenient, and the control program is simpler and more practical.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 is a schematic diagram of a blowing assembly of a sootblower for a rotary air preheater of the present invention;

FIG. 2 is a detailed view of section A of the sootblower for the rotary air preheater of the present invention;

FIG. 3 is a detail view of section B of the sootblower for the rotary air preheater of the present invention;

FIG. 4 is a schematic view of the structure of the spray head of the present invention;

FIG. 5 is a schematic view of the structure of the compression head of the present invention;

FIG. 6 is a schematic view of the structure of the connector of the present invention;

FIG. 7 is a schematic diagram of the rotary drive assembly of the sootblower for the rotary air preheater of the present invention;

FIG. 8 is a schematic view of the positioning assembly of the present invention;

FIG. 9 is a schematic diagram of a sootblower for a rotary air preheater of the present invention;

FIG. 10 is a schematic diagram of the operation of a soot blower for a rotary air preheater of the present invention.

Reference numerals:

a 100-blowing assembly; 200-a rotary drive assembly; 1-a first hollow bar; 2-a second hollow bar; 3-a third hollow bar; a 4-nozzle assembly; 41-a connector; 411-a first detent; 412-a first mating cavity; 413-transition aperture; 42-a compression head; 421-second mating cavity; 422-second positioning groove; 43-sealing ring; 44-spray head; 441—a cylindrical lumen; 442-a tapered lumen; 443-a first positioning column; 444-second positioning column; 445-third positioning column; 5-supporting rods; 51-fixing frame; 52-a fixed shaft; 6-a roller; 7-a high-pressure water pump; 21-a positioning seat; 211-a bottom plate; 212-a first support column; 213-second support columns; 214-a space avoidance cavity; 22-motor; 23-speed reducer; 24-a first sprocket; 25-a chain; 26-a second sprocket; 27-a positioning assembly; 271-positioning cylinder; 272-tapered roller bearings; 273 positioning ring; 274-spacer sleeve; 275-deep groove ball bearings; 28-frequency converter.

Description of the embodiments

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 9, the invention is a soot blower for a rotary air preheater, a rotary driving assembly 200 and a blowing assembly 100, the blowing assembly 100 is rotatably connected with the rotary driving assembly 200, the blowing assembly 100 comprises a first hollow rod 1 vertically arranged and a second hollow rod 2 horizontally arranged, the upper end of the first hollow rod 1 is vertically arranged with one end of the second hollow rod 2 and is internally communicated with the second hollow rod, the lower end of the first hollow rod 1 is hermetically connected with a high-pressure water pump 7 through a high-pressure rubber tube, two ends of the second hollow rod are hermetically arranged, one end of the second hollow rod 2 far away from the first hollow rod 1 is provided with a plurality of third hollow rods 3 vertically upwards, the inside of the third hollow rods 3 is communicated with the inside of the second hollow rod 2, the upper end of each third hollow rod 3 is provided with a nozzle assembly 4, the whole structure can be placed in the air preheater through a manhole, liquid or other cleaning liquid is introduced through a high-pressure water pump 7, finally, fan blades are upwards sprayed through a nozzle assembly 4, the effect of cleaning and dust removal is achieved, the mechanical operation is high, the safety is high, the spraying flow rate can reach 250L/min, the pressure can reach 50-60 MPa, preferably, as shown in fig. 2, a supporting rod 5 is arranged at the lower end of the middle part of a second hollow rod 2, a groove-shaped fixing frame 51 with a downward opening is arranged at the lower end of the supporting rod 5, a pulley 6 is rotationally connected with the middle part of the lower end of the fixing frame 51 through a fixing shaft 52, the pulley 6 is in contact with the ground, the second hollow rod 2 is supported, the strength of the second hollow rod 2 is guaranteed, and the pulley 6 is favorable for reducing the friction force with the ground and reducing the energy loss of the maximum force in the rotation process of the second hollow rod 2; more preferably, the number of the third hollow rods 3 is 4-6, the third hollow rods are arranged in a straight line from outside to inside, the distance between two adjacent third hollow rods 3 is 150-250 mm, the specific set span is determined according to the width of the fan blade, and the sufficient blowing cleaning range is ensured.

Preferably, the inner diameter of the first hollow rod 1 is the same as that of the second hollow rod 2, the materials are obtained consistently, the cost is reduced, and the stable passing of the high pressure level is facilitated; more preferably, the inner diameter of the first hollow rod 1 and the second hollow rod 2 are both processed by martensite or austenite materials, so that the strength is high, and the second hollow rod 2 can be ensured to maintain certain strength in a sufficiently long state; more preferably, the inner diameter of the third hollow rod 3 is 1/10-1/12 of the inner diameter of the second hollow rod 2, so that the water supply requirement of a plurality of third hollow rods 3 is ensured, the principle of water pressure is fully utilized, and when the water pressure enters a small channel from a large channel, the water pressure is automatically increased, and the blowing force is improved.

Preferably, as shown in fig. 3, 4, 5 and 6, the nozzle assembly 4 comprises a connector 41, a pressing head 42 and a spray head 44, wherein the connector 41 is fixedly connected with the upper end of the third hollow rod 3 through a conical thread, the lower end of the spray head 44 is embedded into the upper end of the connector 41, and the pressing head 42 penetrates through the upper end of the spray head 44 to be fixedly connected with the upper end of the connector 41 through a thread, so that the installation firmness of the spray head 44 is ensured; more preferably, a sealing ring 43 is arranged between the spray head 44 and the upper end surface of the connector 41, so that the sealing performance is improved; more preferably, the nozzle 44 comprises a cylindrical cavity 441 and a conical cavity 442 which are sequentially connected from top to bottom, the diameter of the cylindrical cavity 441 is 2-4 mm, the diameter of the lower end of the conical cavity 442 is the same as the inner diameter of the third hollow rod 3, the height of the conical cavity 442 is 4.5-5 times of the height of the cylindrical cavity 441, the blowing pressure is ensured, and the blowing effect is improved; more preferably, the connector 41 comprises a first positioning slot 411, a first matching cavity 412 and a transition hole 413 which are arranged from bottom to top, the spray head 44 is in a middle-shaped structure, the middle-shaped structure comprises a first positioning column 443, a second positioning column 444 and a third positioning column 445 which are arranged from top to bottom, the compacting head 42 comprises a second matching cavity 421 and a second positioning slot 422 which are arranged from top to bottom, the third positioning column 445 is arranged in the first matching cavity 412, the lower end of the second positioning column 444 is arranged in the first positioning slot 411, the upper end of the second positioning column 444 is arranged in the second positioning slot 422, the first positioning column 443 is arranged in the second matching cavity 421, the diameter of the transition hole 413 is equal to the inner diameter of the third hollow rod 3, and the structure can ensure the firmness of the fixation of the spray head 44 and can bear 50-60 MPa of water pressure, and the structure is stable and reliable.

As shown in fig. 7 and 8, the rotary driving assembly 200 includes a first sprocket 24, a second sprocket 26, a motor 22 and a positioning assembly 27, the motor 22 drives the first sprocket 24 to rotate through a speed reducer 23, the first sprocket 24 drives the second sprocket 26 to rotate through a chain, the second sprocket 26 is fixed on the blowing assembly of the soot blower, the positioning assembly 27 is coaxially arranged with the second sprocket 26 and is rotationally connected with the blowing assembly, the positioning assembly 27 includes a positioning cylinder 271, two tapered roller bearings 272 used in pairs are arranged in the positioning cylinder 271 and distributed at two ends, two deep groove ball bearings 275 used in pairs are arranged in the middle part in the positioning cylinder 271, and the adjacent deep groove ball bearings 275 or the adjacent deep groove ball bearings and the tapered roller bearings 272 are positioned through a positioning ring 273 and a spacer 274, so that the tapered roller bearings 272 can bear radial force and axial force, can ensure smooth rotation, and can also bear radial force of the blowing assembly, and simultaneously cooperate with the groove ball bearings to ensure smooth rotation in the axial direction, the whole structure connection is more stable and reliable, and the speed of the blowing assembly 22 is greatly reduced after the speed of the speed reducer 23 is increased; preferably, the rotary driving assembly 200 is of an intermittent gear structure, can rotate to a fixed angle for positioning, performs blowing in a fixed area, realizes targeted concentrated blowing, and performs adjustment and confirmation according to actual conditions.

Preferably, the pitch diameter ratio of the first sprocket 24 to the second sprocket 26 is 1:2; more preferably, the output rotation speed of the motor 22 after passing through the speed reducer is 1 revolution per minute, the specific speed of the two structures is reduced, the blowing assembly is ensured to rotate for 180 degrees for 1 minute after being matched with the two structures, the speed can ensure the stability of the structures under the high-pressure blowing action, and the blowing cleaning effect can be completed by matching with the self-transmission of the fan blades; more preferably, the motor 22 is controlled by the frequency converter 28, different frequencies are set according to different cleaning conditions, speed regulation is safer and faster, and program control is simpler.

Preferably, still include base 21, base 21 includes bottom plate 211, and the both ends of bottom plate 211 up end are equipped with first support column 212 and second support column 213 perpendicularly, and the speed reducer is fixed on first support column 212, and locating component 27 is fixed on second support column 213, and the height of second support column 213 is less than the height of first support column 212, has guaranteed two sprocket installation's integrality like this, and the transmission of chain 25 is more reliable and stable, and the high low of second support column is favorable to with jetting assembly's lower extreme fixed connection, saves space, connects steadily.

Preferably, the lower end of the second supporting column 213 is provided with a space avoiding cavity 214, which is convenient for installing the high-pressure water pump.

Preferably, the outer surfaces of the first sprocket 24 and the second sprocket 26 are provided with a wear layer to enhance the service life of the sprockets

One of the various embodiments of the invention is as follows: the height of the first hollow rod 1 is 550mm, the length of the second hollow rod 1 is 6000mm, the number of the third hollow rods 3 is six, the height exceeding the upper surface of the second hollow rod 2 is 40mm, the diameter of the cylindrical cavity 441 of the spray head 44 is 2.3mm, the height of the conical cavity 442 is 4.8 times the height of the cylindrical cavity 441, the height of the cylindrical cavity 441 is 4mm, and the taper of the conical cavity 442 is 10:27, the height of the second support column 213 is 275mm, the height of the first support column 212 is 620mm, the height of the positioning cylinder 271 is 375mm, the motor 22 is an electric motor, the speed reducer 23 is a multi-stage turbine worm speed reducing structure, and a large specific speed can be set to improve torque.

In the practical use process, the second hollow rod 2 is arranged at the lower end of the air preheater, the nozzle assembly 4 is arranged upwards, the high-pressure water pump 7 is fixed in the avoidance cavity 214, space is saved, meanwhile, water or cleaning liquid is pumped to the nozzle assembly 4 through the first hollow rod 1, the second hollow rod 2 and the third hollow rod 3, then the fan blades are blown through the spray heads 44, the second hollow rod 2 can rotate 180 degrees under the driving of the motor 22, the fan blades rotate continuously, the high-pressure blowing cleaning at a plurality of angles is realized in the whole process, the blowing cleaning at a certain angle with the fan blades is realized, the cleaning effect is better, as shown in fig. 10, the second hollow rod 2 can be fixed at different angles to blow, the blowing requirements of different areas are met, the structure can bear the high temperature of 200-400 degrees, the high pressure of 50-60 MPa, the whole device is simple in structure, the performance is stable, the outer surface is subjected to corrosion-proof treatment, the on-line cleaning is realized, the manual cleaning is replaced, the efficiency is high, and the cleaning is safe.

The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.

Claims

1. Soot blower for rotary air preheater, its characterized in that: the novel high-pressure water pump spraying device comprises a rotary driving assembly (200) and a spraying and blowing assembly (100), wherein the spraying and blowing assembly (100) is rotationally connected with the rotary driving assembly (200), the spraying and blowing assembly (100) comprises a first hollow rod (1) which is vertically arranged and a second hollow rod (2) which is horizontally arranged, the upper end of the first hollow rod (1) is vertically arranged with one end of the second hollow rod (2) and is internally communicated with the second hollow rod, the lower end of the first hollow rod (1) is in sealing connection with a high-pressure water pump, two ends of the second hollow rod are respectively in sealing arrangement, one end, far away from the first hollow rod (1), of the second hollow rod (2) is provided with a plurality of third hollow rods (3) which are vertically upwards, the inner parts of the third hollow rods (3) are communicated with the inner parts of the second hollow rods (2), and the upper end of each third hollow rod (3) is provided with a nozzle assembly (4);

the rotary driving assembly (200) comprises a first sprocket (24), a second sprocket (26), a motor (22) and a positioning assembly (27), the motor (22) drives the first sprocket (24) to rotate through a speed reducer (23), the first sprocket (24) drives the second sprocket (26) to rotate through a chain, the second sprocket (26) is fixed on a blowing assembly (100) of the soot blower, the positioning assembly (27) and the second sprocket (26) are coaxially arranged and rotationally connected with the blowing assembly (100), the positioning assembly (27) comprises a positioning cylinder (271), two tapered roller bearings (272) used in pairs are arranged in the positioning cylinder (271) and distributed at two ends, two deep groove ball bearings (275) used in pairs are arranged in the middle part in the positioning cylinder (271), and positioning is arranged between the adjacent deep groove ball bearings (275) or between the adjacent deep groove ball bearings and the tapered roller bearings (272) through a positioning ring (273) and a sleeve (274);

the nozzle assembly (4) comprises a connector (41), a pressing head (42) and a spray head (44), the connector (41) is fixedly connected with the upper end of the third hollow rod (3) through conical threads, the lower end of the spray head (44) is embedded into the upper end of the connector (41), and the pressing head (42) penetrates through the upper end of the spray head (44) to be fixedly connected with the upper end of the connector (41) through threads;

a sealing ring (43) is arranged between the spray head (44) and the upper end surface of the connector (41);

the spray head (44) comprises a cylindrical inner cavity (441) and a conical inner cavity (442) which are sequentially connected from top to bottom, the diameter of the cylindrical inner cavity (441) is 2-4 mm, the diameter of the lower end of the conical inner cavity (442) is the same as the inner diameter of the third hollow rod (3), and the height of the conical inner cavity (442) is 4.5-5 times that of the cylindrical inner cavity (441);

the connector (41) comprises a first positioning groove (411), a first matching cavity (412) and a transition hole (413) which are arranged from bottom to top, the spray head (44) is of a medium-shaped structure and comprises a first positioning column (443), a second positioning column (444) and a third positioning column (445) which are arranged from top to bottom, the compression head (42) comprises a second matching cavity (421) and a second positioning groove (422) which are arranged from top to bottom, the third positioning column (445) is arranged in the first matching cavity (412), the lower end of the second positioning column (444) is arranged in the first positioning groove (411), the upper end of the second positioning column is arranged in the second positioning groove (422), the first positioning column (443) is arranged in the second matching cavity (421), and the diameter of the transition hole (413) is equal to the inner diameter of the third hollow rod (3).

2. The sootblower for a rotary air preheater as recited in claim 1, wherein: still include base (21), base (21) include bottom plate (211), the both ends of bottom plate (211) up end are equipped with first support column (212) and second support column (213) perpendicularly, speed reducer (23) are fixed on first support column (212), locating component (27) are fixed on second support column (213), the height of second support column (213) is less than the height of first support column (212), the lower extreme of second support column (213) is equipped with keeps away a cavity (214).

3. The sootblower for a rotary air preheater as recited in claim 1, wherein: the pitch circle diameter ratio of the first chain wheel (24) to the second chain wheel (26) is 1:2, the output rotating speed of the motor (22) after passing through the speed reducer (23) is 1 revolution per minute, and the speed reducer (23) is of a multi-stage turbine worm speed reduction structure.

4. The sootblower for a rotary air preheater as recited in claim 1, wherein: the inner diameter of the first hollow rod (1) is the same as the inner diameter of the second hollow rod (2), the inner diameter of the first hollow rod (1) and the second hollow rod (2) are both formed by processing martensite or austenite materials, and the inner diameter of the third hollow rod (3) is 1/10-1/12 of the inner diameter of the second hollow rod (2).

5. The sootblower for a rotary air preheater as recited in claim 1, wherein: the lower extreme at second hollow pole (2) middle part is equipped with bracing piece (5), the lower extreme of bracing piece (5) is equipped with the decurrent flute profile mount (51) of opening, the middle part of mount (51) lower extreme is connected with pulley (6) through fixed axle (52) rotation, pulley (6) and ground contact setting.