An online lifting structure for the rake pipe of a rake sootblower

Abstract

The application discloses a rake pipe online lifting structure of a rake type soot blower, which can realize online lifting of a rake pipe of a rake type soot blower during online operation of an SCR denitration device. The rake pipe online lifting structure is composed of five parts, i.e. a driving assembly, a transmission shaft, a dustproof support seat, a lifting assembly and a flexible connecting assembly. By lifting the rake pipe, the soot blowing strength of the rake pipe nozzle to the catalyst surface can be increased or reduced, so that timely and powerful soot blowing and plugging removal can be realized by reducing the height of the rake pipe of the rake type soot blower inside the device and increasing the blowing strength in an abnormal working condition.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical equipment, and in particular to an online lifting structure of a rake pipe of a rake-type sootblower. Background Art

[0002] The SCR denitrification reactor uses a rake soot blower for soot blowing. The relevant parameters of the rake soot blower (such as the height of the rake soot blower's rake pipe from the catalyst, the maximum blowing pressure of the rake soot blower, etc.) have been determined during the design.

[0003] When an SCR denitration system experiences abnormal operating conditions, the major drawback of the existing rake sootblower in the SCR denitration reactor is that, when the rake sootblower's purge pressure reaches maximum, the SCR denitration reactor catalyst becomes clogged with soot, causing increasing resistance. While the equipment is currently operating, there is no way to achieve online cleaning or clearing of the blockage. In this situation, users are forced to shut down the system and manually clean the blockage, which not only reduces production efficiency but also increases production and maintenance costs. Summary of the Invention

[0004] The present invention provides an online lifting structure for the rake pipe of a rake sootblower, the purpose of which is to solve the problems of manual dust cleaning and blockage clearing of existing rake sootblower, which affects production efficiency and increases production and maintenance costs, when abnormal operating conditions occur in the SCR denitrification equipment. Through this rake sootblower, the rake pipe of the rake sootblower can be raised and lowered online when the SCR denitrification equipment is online. By raising and lowering the rake pipe, the blowing force from the rake pipe nozzle to the catalyst surface is increased or decreased. In abnormal operating conditions, the height of the rake pipe of the rake sootblower inside the equipment can be lowered online to increase the blowing force, thereby achieving timely and effective dust cleaning and blockage clearing, and avoiding uncontrolled increase in catalyst resistance, which affects plant production.

[0005] The technical solutions provided by the present invention are as follows:

[0006] A rake pipe online lifting structure for a rake sootblower, comprising a rake sootblower body, a rake pipe, and supporting rollers for fixing the rake pipe, wherein the rake pipe comprises a first rake pipe and a second rake pipe, the first rake pipe and the second rake pipe being connected via a vertical pipe, the first rake pipe being connected to the rake sootblower body, and the second rake pipe being provided with air holes, further comprising:

[0007] A drive assembly includes a handwheel gun and a sleeve. The handwheel gun includes a handwheel and a gun rod. One end of the gun rod extends into the housing of the denitrification equipment, and the other end is connected to the handwheel. The sleeve is sleeved on the surface of the gun rod and fixed to the housing of the denitrification equipment.

[0008] A transmission shaft, comprising a rotating shaft, wherein the rotating shaft is connected to the gun barrel;

[0009] A dustproof support seat, the dustproof support seat is installed on the supporting roller, used for supporting the rotating shaft and being rotatably connected to the rotating shaft;

[0010] A flexible connection assembly includes an upper anisotropic flange and a lower anisotropic flange provided on the vertical pipe, wherein the upper anisotropic flange and the lower anisotropic flange are connected to form a whole through a vacuum bellows, a plurality of guide rods are installed on the lower anisotropic flange, and guide holes are provided on the upper anisotropic flange at positions corresponding to the guide rods, and the guide rods pass through the guide holes;

[0011] The lifting assembly includes a heterosexual gear, a heterosexual rack, a rack lifting box, a bullet head, a spring piece and a limit plate. The heterosexual gear is installed on the rotating shaft, the heterosexual rack is meshed with the heterosexual gear, the heterosexual rack is installed on the lower heterosexual flange, and the rack lifting box is installed on the upper heterosexual flange. Multiple groups of grooves are provided on both sides of the rack lifting box for positioning and limiting with the bullet head; multiple blind holes are opened on both sides of the heterosexual rack for placing the bullet head and the spring piece, the heterosexual rack penetrates the rack lifting box, and when the heterosexual rack is lifted or lowered, the bullet head follows the lifting and lowering, and the groove is clamped under the action of the spring piece; the limit plate is installed at the upper and lower ends of the heterosexual rack;

[0012] Wherein, the transmission shaft, the dustproof support seat, the flexible connection component and the lifting component are all arranged in the shell of the denitrification equipment.

[0013] Furthermore, the dustproof support seat includes a base and a support, the base is connected to the support roller through the support, a notch for installation is provided on one side of the base, a through hole adapted to the rotating shaft is provided in the middle of the base, the through hole is connected to the installation notch, the rotating shaft passes through the through hole, and there is a gap between the rotating shaft and the side wall of the through hole.

[0014] Furthermore, the dustproof support seat also includes a dustproof cover and a shaft sleeve, the dustproof cover is sleeved on the outside of the base, and the shaft sleeve is arranged in the through hole and sleeved on the rotating shaft.

[0015] Furthermore, the lifting assembly also includes a dust shield, which is installed above the rack lifting box and fits the heterogeneous rack.

[0016] Furthermore, a plug is installed at the outer end of the sleeve, and the plug is used to prevent air leakage from the sleeve.

[0017] Furthermore, the gun rod is provided with a male stop at one end close to the rotating shaft, and the rotating shaft is provided with a female stop matched with the male stop at one end corresponding to the gun rod.

[0018] Furthermore, a pointer is provided on the gun barrel along the axial direction, a scale is marked on the sleeve, and the gun barrel is inserted into the sleeve, and the rotation length of the hand wheel is displayed by the cooperation of the scale and the pointer.

[0019] Furthermore, the base includes a first part and a second part that fit together, the through hole is provided at the junction of the first part and the second part, the mounting notch is provided at the upper part of the second part, the first part is connected to the support, a pressing plate is provided in the mounting notch, and the contour of the pressing plate is consistent with the shape of the mounting notch;

[0020] The first part and the second part are connected by threads.

[0021] Furthermore, the supporting roller and the first rake pipe are arranged parallel to each other along a first direction;

[0022] The number of the vertical pipes and the number of the second rake pipes are both two, the two vertical pipes are spaced apart, and the two second rake pipes are arranged in parallel along the second direction;

[0023] A catalyst is placed below the air holes on the second rake pipe.

[0024] Furthermore, the vacuum bellows has a multi-fold structure, with the number of folds being greater than 10 layers;

[0025] The number of the guide rods is 4.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention provides an online lifting structure for a rake pipe of a rake soot blower, which can realize the online lifting of the rake pipe of the rake soot blower when the SCR denitrification equipment is online. The structure consists of five parts: a drive assembly, a transmission shaft, a dust-proof support seat, a lifting assembly, and a flexible connection assembly. By lifting the rake pipe, the soot blowing force from the rake pipe nozzle to the catalyst surface is increased or decreased. In abnormal working conditions, the height of the rake pipe of the rake soot blower inside the equipment can be lowered online to increase the blowing force, thereby realizing timely and effective soot cleaning and blockage clearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the overall structure of the rake pipe online lifting structure of the rake sootblower provided by the present invention;

[0029] Figure 2 Schematic diagram of the structure of the drive assembly in an embodiment of the present invention Figure 1 ;

[0030] Figure 3 Schematic diagram of the structure of the drive assembly in an embodiment of the present invention Figure 2 ;

[0031] Figure 4 Schematic diagram of the structure of the transmission shaft in an embodiment of the present invention;

[0032] Figure 5 This is a schematic structural diagram of a dustproof support seat according to an embodiment of the present invention;

[0033] Figure 6 This is a structural diagram of a lifting assembly in an embodiment of the present invention;

[0034] Figure 7 Schematic diagram of the structure of the flexible connection assembly in an embodiment of the present invention.

[0035] The reference numerals are as follows:

[0036] 1. Drive assembly; 101. Handwheel gun; 1011. Handwheel; 1012. Gun barrel; 1013. Pointer; 102. Casing; 103. Plug; 104. Scale; 2. Transmission shaft; 201. Rotating shaft; 202. Limiting ring; 3. Dustproof support seat; 301. Dust cover; 302. Bushing; 303. Pressing plate; 304. Base; 3041. First part; 3042. Second part; 305. Support; 4. Lifting assembly; 401, heterogeneous gear; 402, heterogeneous rack; 403, rack lifting box; 404, bullet head; 405, shrapnel; 406, limit plate; 407, ash baffle; 5, flexible connection assembly; 501, vacuum bellows; 502, upper heterogeneous flange; 503, lower heterogeneous flange; 6, first rake pipe; 7, soot blower body; 8, second rake pipe; 9, support roller; 10, catalyst; 11, denitrification equipment shell. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the embodiments described below are part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0038] Therefore, the detailed description of the embodiments of the present application provided below in conjunction with the accompanying drawings is intended to represent only selected embodiments of the present application and is not intended to limit the scope of protection claimed in the present application. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present application without making any creative efforts shall fall within the scope of protection claimed in the present application.

[0039] It should be understood that, in the description of the embodiments of the present invention, the terms "first," "second," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features indicated. Therefore, features specified as "first," "second," etc. may explicitly or implicitly include one or more of the described features.

[0040] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two elements or an interaction between two elements. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0041] See Figure 1-Figure 7 The present invention provides an online lifting structure for a rake pipe of a rake sootblower, comprising a rake sootblower body 7, a rake pipe, and supporting rollers 9 for fixing the rake pipe. The rake pipe comprises a first rake pipe 6 and a second rake pipe 8. The first rake pipe 6 and the second rake pipe 8 are connected via a vertical pipe. The first rake pipe 6 is connected to the rake sootblower body 7. The second rake pipe 8 is provided with air holes. The structure further comprises:

[0042] The driving assembly 1 includes a handwheel gun 101 and a sleeve 102. The handwheel gun 101 includes a handwheel 1011 and a gun rod 1012. One end of the gun rod 1012 extends into the denitrification equipment housing 11, and the other end is connected to the handwheel 1011. The sleeve 102 is sleeved on the surface of the gun rod 1012, and the sleeve 102 is fixed on the denitrification equipment housing 11.

[0043] The transmission shaft 2 includes a rotating shaft 201 , and the rotating shaft 201 is connected to the gun barrel 1012 .

[0044] The dustproof support seat 3 is installed on the supporting roller 9 and is used to support the rotating shaft 201 and is rotatably connected to the rotating shaft 201.

[0045] The flexible connection component 5 includes an upper anisotropic flange 502 and a lower anisotropic flange 503 arranged on the vertical pipe. The upper anisotropic flange 502 and the lower anisotropic flange 503 are connected into a whole through a vacuum bellows 501. A plurality of guide rods are installed on the lower anisotropic flange 503. Guide holes are provided on the upper anisotropic flange 502 at positions corresponding to the guide rods. The guide rods pass through the guide holes to ensure the stability of the up and down movement of the flexible connection component 5.

[0046] The lifting assembly 4 comprises a male gear 401, a male rack 402, a rack lifting box 403, a bullet head 404, a bullet piece 405 and a limiting plate 406. The male gear 401 is installed on the rotating shaft 201. The male rack 402 is engaged with the male gear 401. The male rack 402 is installed on the lower male flange 503. The rack lifting box 403 is installed on the upper male flange 502. The inside of the rack lifting box 403 is provided with a plurality of grooves on both sides for positioning and limiting the bullet head 404. A plurality of blind holes are formed on both sides of the male rack 402 for placing the bullet head 404 and the bullet piece 405. The male rack 402 penetrates into the rack lifting box 403. During the lifting process of the male rack 402, the bullet head 404 is lifted and clamped in the groove under the action of the bullet piece 405. The limiting plate 406 is installed on both ends of the male rack 402 to limit the highest and lowest positions of the male rack 402.

[0047] The transmission shaft 2, the dustproof support seat 3, the flexible connection assembly 5 and the lifting assembly 4 are arranged in the denitration equipment shell 11.

[0048] Optionally, the dustproof support seat 3 comprises a base 304 and a support 305. The base 304 is connected with the support roller 9 through the support 305. One side of the base 304 is provided with a mounting gap. A through hole adapted to the rotating shaft 201 is arranged in the middle of the base 304. The through hole is in communication with the mounting gap. The rotating shaft 201 penetrates through the through hole, and there is a gap between the rotating shaft 201 and the side wall of the through hole.

[0049] Optionally, the dustproof support seat 3 further comprises a dust cover 301 and a shaft sleeve 302. The dust cover 301 is sleeved outside the base 304. The shaft sleeve 302 is arranged in the through hole and sleeved on the rotating shaft 201.

[0050] Optionally, the lifting assembly 4 further comprises a dust blocking plate 407. The dust blocking plate 407 is installed above the rack lifting box 403 and is attached to the male rack 402.

[0051] As shown in Figure 6 , the dust blocking plate 407 is installed above the rack lifting box 403 and is attached to the male rack 402. The function is to prevent dust in the flue gas from entering the rack lifting box 403 and causing the bullet head 404 to jam in the inside of the rack lifting box 403.

[0052] Optionally, the outer end of the sleeve pipe 102 is provided with a plug 103. The plug 103 is used to prevent air leakage of the sleeve pipe 102.

[0053] Optionally, the gun barrel 1012 is provided with a male stop opening at one end close to the rotating shaft 201. The rotating shaft 201 is provided with a female stop opening corresponding to one end of the gun barrel 1012.

[0054] Optionally, a pointer 1013 is provided axially on the gun barrel 1012 , a scale 104 is marked on the sleeve 102 , and the gun barrel 1012 is inserted into the sleeve 102 , and the rotation length of the hand wheel 1011 is displayed through the cooperation of the scale 104 and the pointer 1013 .

[0055] Optionally, the base 304 includes a first portion 3041 and a second portion 3042 that fit together. A through hole is provided at the junction of the first portion 3041 and the second portion 3042. A mounting notch is provided at the upper portion of the second portion 3042. The first portion 3041 is connected to the support 305. A pressing plate 303 is provided in the mounting notch. The contour of the pressing plate 303 is consistent with the shape of the mounting notch.

[0056] The first portion 3041 and the second portion 3042 are connected via threads.

[0057] Optionally, the supporting roller 9 and the first rake pipe 6 are arranged parallel to each other along the first direction;

[0058] The number of the vertical pipes and the second rake pipes 8 are both 2, the two vertical pipes are arranged at intervals, and the two second rake pipes 8 are arranged in parallel along the second direction;

[0059] A catalyst 10 is placed below the air holes on the second rake tube 8 .

[0060] Optionally, the vacuum bellows 501 has a multi-fold structure with more than 10 folds. The vacuum bellows 501 has the characteristics of pressure resistance, easy stretching and compression, and has a multi-fold, deep concavity structure with more than 10 folds, a groove width of 10 to 30 mm, and a depth of more than 20 to 50 mm.

[0061] like Figure 2 、 Figure 3 As shown, a pointer 1013 is provided on a gun barrel 1012. One end of the gun barrel 1012 is provided with a male stop, and the other end is connected to a handwheel 1011, forming a pistol wheel 101. A sleeve 102 is mounted on the denitrification equipment housing 11 to allow the pistol wheel 101 to pass therethrough. A scale 104 is marked on the sleeve 102, which cooperates with the pointer 1013 on the inserted pistol wheel 101 to indicate the rotation length. A plug 103 is installed at the end of the sleeve 102 when the operator, after a short period of operation, removes the pistol wheel 101 from the sleeve 102 to prevent air leakage during long-term operation of the equipment.

[0062] like Figure 4 As shown, multiple sets of limiting rings 202 are provided on the rotating shaft 201 for installing the heterosexual gears 401 in the lifting assembly 4. A female stop is provided at one end of the rotating shaft 201 for cooperating with the male stop on the gun barrel 1012.

[0063] like Figure 5As shown, the dustproof support base 3 is mounted on the support rollers 9 of the original rake-type sootblower inside the denitrification equipment housing 11, and the number of support rollers 9 corresponds one to one. Its main function is to support the rotating shaft 201. The shaft sleeve 302 in the dustproof support base 3 lubricates the rotating shaft 201, and the dust cover 301 prevents dust in the flue gas from entering the dustproof support base 3 and affecting the rotation of the rotating shaft 201.

[0064] The installation sequence of the online lifting structure of the rake pipe of a rake soot blower provided by the present invention is as follows: the sleeve 102 in the drive assembly 1 is installed below the original rake soot blower of the denitrification equipment shell 11, the plug 103 is installed at the end of the sleeve 102, the dustproof support seat 3 is installed on the support rollers 9 of the original rake soot blower inside the denitrification equipment shell 11, and the number of the support rollers 9 corresponds one to one, the transmission shaft 2 is installed on the dustproof support seat 3, and the end thereof with the female stop is aligned with the center of the sleeve 102, the upper anisotropic flange 502 and the lower anisotropic flange 503 in the flexible connection assembly 5 are respectively connected to the upper and lower flanges of the vertical pipe of the original rake soot blower, and the upper anisotropic flange 50 is connected by the vacuum bellows 501. 2 is connected to the lower heterosexual flange 503 as a whole, the heterosexual gear 401 in the lifting assembly 4 is installed on the transmission shaft 2, and the limiting ring 202 provided on the transmission shaft 2 limits the heterosexual gear 401. The heterosexual rack 402 in the lifting assembly 4 is installed on the lower heterosexual flange 503, and the rack lifting box 403 is installed on the upper heterosexual flange 502. The limiting plates 406 are installed at the upper and lower ends of the heterosexual rack 402, and the ash baffle 407 is installed above the rack lifting box 403 and fits with the heterosexual rack 402. After installation, the rotation of each rotating component is guaranteed to be flexible. The handwheel gun 101 is stored separately and is used to drive the rake pipe structure of the online liftable sootblower under abnormal circumstances.

[0065] The specific operation process and movement form of the rake pipe online lifting structure of the rake type soot blower are as follows: when the catalyst resistance of the denitrification equipment is abnormal, the operator removes the plug 103 at the end of the sleeve 102, and holds the hand wheel gun 101 to penetrate into the interior of the sleeve 102. During the penetration process, the pointer 1013 on the pistol wheel 101 needs to be aligned with the zero point of the scale 104 of the sleeve 102 until the pistol wheel 101 can no longer penetrate into the sleeve 102. At this time, the male stop at the end of the pistol wheel 101 has been inserted into the female stop corresponding to one end of the rotating shaft 201. At this time, the pistol wheel 101 is rotated clockwise to drive the assembly 1 The transmission shaft 2 is driven to rotate, and the pointer 1013 on the pistol wheel 101 will indicate the distance on the scale 104 of the sleeve 102. The transmission shaft 2 drives the opposite-sex gear 401 to rotate under the support of the dust-proof support seat 3. The opposite-sex gear 401 is engaged with the opposite-sex rack 402, driving the opposite-sex rack 402 to move downward in the rack lifting box 403. The opposite-sex rack 402 is installed on the lower opposite-sex flange 503. The lower opposite-sex flange 503 is connected to the original soot blower rake pipe (i.e., the second rake pipe 8), which eventually drives the original soot blower rake pipe to move downward, close to the catalyst 10, which is more conducive to cleaning the surface of the catalyst 10. During the movement of this mechanism, the key component is the coordination between the bullet head 404 mounted on the anisotropic rack 402 and the groove in the rack lift box 403. When the handwheel gun 101 rotates a short distance, the bullet head 404 on the anisotropic rack 402 jumps into the groove in the rack lift box 403. This is done to facilitate fixed position and limit excessive displacement operation. When the resistance of the catalyst 10 returns to normal, the handwheel gun 101 rotates counterclockwise, causing the pointer 1013 on the pistol wheel 101 to return to zero on the scale 104 of the sleeve 102. At this time, all mechanisms perform the reverse movement according to the above movement, returning the original sootblower rake pipe to the final design position. The handwheel gun 101 is then pulled out and stored, and the plug 103 is replaced on the end of the sleeve 102 to prevent air leakage during long-term operation. The entire operation is completed.

[0066] The technical solution of the patent of this invention is mainly to solve the problem of abnormal catalyst resistance in the denitrification project, which can quickly and conveniently realize online dust removal and blockage removal, ensure that the catalyst resistance can quickly return to normal, and ensure the stable operation of the system equipment.

[0067] The rake pipe online lifting structure of the rake sootblower provided by the present invention has the following advantages:

[0068] Advantage 1: It avoids the situation where users have to shut down the machine and manually clean the dust and blockage after the catalyst is blocked by dust, which not only affects production but also consumes time and effort.

[0069] Advantage 2: The online liftable sootblower rake pipe structure has no control, no power consumption, simple operation and convenient maintenance.

[0070] Advantage three: the online liftable sootblower rake pipe structure is attached to the original rake sootblower structure, which makes the construction easy by modifying the original rake sootblower structure.

[0071] The above is merely the preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application shall be included in the scope of protection of this application. Therefore, the scope of protection of this application shall be based on the scope of protection of the claims.

Claims

1. A rake pipe online lifting structure for a rake sootblower, comprising a rake sootblower body, a rake pipe, and supporting rollers for fixing the rake pipe, wherein the rake pipe comprises a first rake pipe and a second rake pipe, the first rake pipe and the second rake pipe being connected via a vertical pipe, the first rake pipe being connected to the rake sootblower body, and the second rake pipe being provided with air holes, characterized in that: Also includes: A drive assembly includes a handwheel gun and a sleeve. The handwheel gun includes a handwheel and a gun rod. One end of the gun rod extends into the housing of the denitrification equipment, and the other end is connected to the handwheel. The sleeve is sleeved on the surface of the gun rod and fixed to the housing of the denitrification equipment. A transmission shaft, comprising a rotating shaft, wherein the rotating shaft is connected to the gun barrel; A dustproof support seat, the dustproof support seat is installed on the supporting roller, used for supporting the rotating shaft and being rotatably connected to the rotating shaft; A flexible connection assembly includes an upper anisotropic flange and a lower anisotropic flange provided on the vertical pipe, wherein the upper anisotropic flange and the lower anisotropic flange are connected to form a whole through a vacuum bellows, a plurality of guide rods are installed on the lower anisotropic flange, and guide holes are provided on the upper anisotropic flange at positions corresponding to the guide rods, and the guide rods pass through the guide holes; The lifting assembly includes a heterosexual gear, a heterosexual rack, a rack lifting box, a bullet head, a spring piece and a limit plate. The heterosexual gear is installed on the rotating shaft, the heterosexual rack is meshed with the heterosexual gear, the heterosexual rack is installed on the lower heterosexual flange, and the rack lifting box is installed on the upper heterosexual flange. Multiple groups of grooves are provided on both sides of the rack lifting box for positioning and limiting with the bullet head; multiple blind holes are opened on both sides of the heterosexual rack for placing the bullet head and the spring piece, the heterosexual rack penetrates the rack lifting box, and when the heterosexual rack is lifted or lowered, the bullet head follows the lifting and lowering, and the groove is clamped under the action of the spring piece; the limit plate is installed at the upper and lower ends of the heterosexual rack; Wherein, the transmission shaft, the dustproof support seat, the flexible connection component and the lifting component are all arranged in the shell of the denitrification equipment.

2. The rake pipe online lifting structure of the rake sootblower according to claim 1 is characterized in that: The dustproof support seat includes a base and a support, the base is connected to the support roller through the support, a notch for installation is provided on one side of the base, a through hole adapted to the rotating shaft is provided in the middle of the base, the through hole is connected to the installation notch, the rotating shaft passes through the through hole, and there is a gap between the rotating shaft and the side wall of the through hole.

3. The rake pipe online lifting structure of the rake sootblower according to claim 2 is characterized in that: The dustproof support seat also includes a dustproof cover and a shaft sleeve. The dustproof cover is sleeved on the outside of the base, and the shaft sleeve is arranged in the through hole and sleeved on the rotating shaft.

4. The rake pipe online lifting structure of the rake sootblower according to claim 1 is characterized in that: The lifting assembly further includes a dust shield plate, which is installed above the rack lifting box and fits the rack with an opposite sex.

5. The rake pipe online lifting structure of the rake sootblower according to any one of claims 1 to 4, characterized in that: A plug is installed at the outer end of the sleeve, and the plug is used to prevent air leakage from the sleeve.

6. The rake pipe online lifting structure of the rake sootblower according to claim 5, characterized in that: The gun rod is provided with a male stop at one end close to the rotating shaft, and the rotating shaft is provided with a female stop matched with the male stop at one end corresponding to the gun rod.

7. The rake pipe online lifting structure of the rake sootblower according to claim 6, characterized in that: A pointer is provided on the gun barrel along the axial direction, a scale is marked on the sleeve, and the gun barrel is inserted into the sleeve, and the rotation length of the hand wheel is displayed through the cooperation of the scale and the pointer.

8. The rake pipe online lifting structure of the rake sootblower according to claim 3, characterized in that: The base includes a first portion and a second portion that fit together, the through hole is provided at the junction of the first portion and the second portion, the mounting notch is provided at the upper portion of the second portion, the first portion is connected to the support, and a pressing plate is provided in the mounting notch, the contour of the pressing plate being consistent with the shape of the mounting notch; The first part is connected to the second part by threads.

9. The rake pipe online lifting structure of a rake sootblower according to any one of claims 6 to 8, characterized in that: The supporting roller and the first rake pipe are arranged parallel to each other along a first direction; The number of the vertical pipes and the number of the second rake pipes are both two, the two vertical pipes are spaced apart, and the two second rake pipes are arranged in parallel along the second direction; A catalyst is placed below the air holes on the second rake pipe.

10. The rake pipe online lifting structure of the rake sootblower according to claim 9, characterized in that: The vacuum bellows has a multi-fold structure with more than 10 folds; The number of the guide rods is 4.

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