Purging device for boiler air bellow

Abstract

The utility model discloses a blowing device for a boiler bellow, which relates to the technical field of bellow blowing and comprises a bellow and a boiler furnace which are connected with each other, the side wall of the bellow is fixedly connected with a blowing pipe, one end of the blowing pipe in the bellow is fixedly connected with a blowing frame, the bottom end of the blowing pipe is rotatably connected with a guide frame, and a turbine is arranged in the bottom of the blowing pipe. A rotating shaft is fixedly connected to the middle of the turbine, a chassis is arranged below the turbine, an air outlet hole is formed in the chassis, a mounting disc is fixedly connected to the end, penetrating through the chassis, of the rotating shaft, and the exterior of the mounting disc is fixedly connected with the guide frame; the turbine drives the guide frame to rotate through the rotating shaft and the mounting disc and pokes dust and sundries at the bottom end of the air bellow; the air sprayed out of the alignment holes purges dust and impurities near the guide frame, meanwhile, the step part, facing the air bellow, of the spray head is purged, and the technical problem that dust around the soot blowing gun is accumulated, and consequently dead corners exist in the purging process of the soot blowing gun is solved.

Description

Technical Field

[0001] The utility model belongs to the field of bellows and relates to a purge technology, in particular to a purge device for a boiler bellows. Background Art

[0002] The purge device for boiler bellows is a device used to clean and maintain boiler bellows. It is mainly used to remove dust, debris and other dirt inside the bellows to ensure the normal operation of the bellows. The principle of the purge device is to use high-pressure air to blow dust and dirt out of the bellows. Usually, the purge device consists of a fan and a high-pressure air nozzle. The airflow generated by the fan is focused by the nozzle and sprayed into the inside of the bellows, thereby blowing out the dirt.

[0003] In the prior art, for example, a coal-fired boiler secondary wind box dust blowing device provided by Chinese patent publication number CN217402584U rotates the soot blowing gun to a suitable angle, inserts the bolt into the bolt hole on the boss on the fixed ring, and then passes the bolt through the arc frame, and then tightens the nut on the side of the arc frame away from the boss, and fixes the fixed ring and the rotating block, that is, the soot blowing gun is fixed; in the cleaning area and soot blowing angle where the soot blowing gun needs to be replaced, the cleaning area and soot blowing area of ​​the soot blowing gun are greatly increased, but the above technical solution still has the following problems:

[0004] The applicant believes that since the air flow outlet of the sootblowing gun all flows out from the muzzle, when the dust in the bellows is blown away, the dust and debris within the range of the sootblowing gun are easily blown out, while the dust accumulated around the sootblowing gun will accumulate, resulting in dead corners during the sootblowing gun's blowing process, affecting the ventilation effect of the bellows. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a purging device for a boiler wind box, which solves the problem that dust accumulates around the sootblowing gun, resulting in a dead corner during the sootblowing gun purging process.

[0006] To achieve the above-mentioned purpose, according to an embodiment of the utility model, a blowing device for a boiler bellows is proposed, comprising a bellows and a boiler furnace connected to each other, the side wall of the bellows being fixedly connected with a blowing pipe, one end of the blowing pipe located in the bellows being fixedly connected with a blowing frame, and the bottom end being rotatably connected with a guide frame, a turbine is arranged at the bottom of the blowing pipe, a rotating shaft is fixedly connected to the middle part of the turbine, the rotating shaft is rotatably connected to the blowing pipe, a chassis fixedly connected to the blowing pipe is arranged below the turbine, an air outlet is opened on the chassis, the rotating shaft passes through the chassis and is rotatably connected to the chassis, one end of the rotating shaft passing through the chassis is fixedly connected with a mounting plate, and the outer part of the mounting plate is fixedly connected to the guide frame.

[0007] Preferably, an extension pipe is provided at one end of the blowing pipe located in the bellows, and the blowing frame is fixedly mounted on the extension pipe at the top and is in communication with the extension pipe.

[0008] Preferably, the turbine is located in an extension pipe at the bottom of the blowing pipe.

[0009] Preferably, there are multiple blowing pipes, which are arranged equidistantly on the wind box.

[0010] Preferably, the purge rack is in a "J" shape.

[0011] Preferably, nozzles facing one side of the wind box are fixedly mounted on both ends of the blowing frame.

[0012] Preferably, the guide frame is rotatably connected to the corresponding extension tube.

[0013] Preferably, the mounting plate is provided with an alignment hole which matches the air outlet hole.

[0014] Preferably, the end of the guide frame is arranged in an arc shape.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The air main pipe introduces high-pressure gas into the blowing pipe, and the high-pressure gas passes through the extension pipe and the blowing frame and is ejected from the nozzle. The high-pressure gas ejected from the nozzle sweeps the dust and impurities at the bottom of the bellows toward the step part of the bellows. By setting the guide frame, the high-pressure gas flows out from the air outlet of the chassis below the turbine, drives the turbine to rotate, the turbine drives the rotating shaft to rotate, the rotating shaft drives the mounting plate to rotate, the mounting plate drives the guide frame to rotate, and moves the dust and debris at the bottom of the bellows. The guide frame moves the dust and debris to the step part of the bellows and falls from the step part of the bellows. The alignment holes and different air outlets overlap successively, prompting the high-pressure gas to be ejected from the air outlet and the alignment holes. The gas ejected from the alignment holes sweeps the dust and impurities near the guide frame, prompting the impurities to be blown to the outer periphery of the guide frame, thereby increasing the space for blowing dust and impurities in the bellows, and avoiding dust accumulation at the nozzle. At the same time, no manual operation is required, which reduces labor intensity and improves the sealing of the bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a partial cross-sectional structural diagram of the bellows of the utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the blowpipe of the utility model;

[0020] Figure 4 for Figure 3 Enlarged structural diagram of point A in the middle.

[0021] The numbers in the figure represent: 1. air main pipe; 2. bellows; 3. boiler furnace; 4. blow pipe; 5. purge rack; 6. guide rack; 7. rotating shaft; 8. nozzle; 9. extension pipe; 10. turbine; 11. chassis; 12. mounting plate; 13. air outlet; 14. alignment hole. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 and Figure 2 As shown, a purging device for a boiler bellows comprises a bellows 2 and a boiler furnace 3 which are connected to each other. The bellows 2 are located on both sides of the boiler furnace 3. The bellows 2 are connected to the boiler furnace 3 through pipelines. An air main pipe 1 is fixedly installed on the bellows 2. The air main pipe 1 is connected to an external hot air box, and high-pressure air is provided to the air main pipe 1 through the external hot air box. A blowing pipe 4 is fixedly connected to the side wall of the bellows 2. There are multiple blowing pipes 4, which are equidistantly arranged on the bellows 2. One end of the blowing pipe 4 is connected to the air main pipe 1, and the other end of the blowing pipe 4 is fixedly connected to a purge frame 5. The bottom end of the blowing pipe 4 is rotatably connected to a guide frame 6. The guide frame 6 is driven to rotate by high-pressure gas, so that the guide frame 6 pushes dust and debris on the bottom wall of the bellows 2 to one side of the bellows 2, thereby cleaning impurities and dust outside the range of the purge frame 5. A step is provided at the bottom end of the bellows 2.

[0024] As an implementation method in this embodiment, Figure 2-Figure 4 As shown, an extension pipe 9 is provided at one end of the blowing pipe 4 located in the bellows 2, and a purge frame 5 is fixedly installed on the extension pipe 9 and communicated with the extension pipe 9. The purge frame 5 is in a "J" shape, and nozzles 8 facing the steps of the bellows 2 are fixedly installed at both ends of the purge frame 5. High-pressure gas is introduced into the blowing pipe 4 by the air main pipe 1, and the high-pressure gas passes through the extension pipe 9 and the purge frame 5 and is ejected from the nozzle 8. The high-pressure gas ejected from the nozzle 8 sweeps the dust and impurities at the bottom of the bellows 2 toward the step part of the bellows 2, thereby cleaning the debris at the bottom of the bellows 2.

[0025] As an implementation method in this embodiment, Figure 2-Figure 4As shown, a turbine 10 is arranged in the extension tube 9 located at the bottom of the blowing tube 4, and a rotating shaft 7 is fixedly connected to the middle of the turbine 10. A chassis 11 fixedly connected to the blowing tube 4 is arranged below the turbine 10, and an air outlet 13 is provided on the chassis 11. The rotating shaft 7 passes through the chassis 11 and is rotatably connected to the chassis 11. One end of the rotating shaft 7 passing through the chassis 11 is fixedly connected to a mounting plate 12, and the outer portion of the mounting plate 12 is fixedly connected to the guide frame 6, and the guide frame 6 is rotatably connected to the corresponding extension tube 9. The mounting plate 12 is provided with a positioning hole 14 that is compatible with the air outlet 13. When the high-pressure gas The body flows from the air main pipe 1 into the blowing pipe 4, a part of the high-pressure gas flows into the blowing frame 5 and is sprayed out from the nozzle 8 to purge the dust and impurities at the bottom of the bellows 2, and the other part of the high-pressure gas flows into the turbine 10, the high-pressure gas drives the turbine 10 to rotate, the turbine 10 drives the rotating shaft 7 to rotate, the rotating shaft 7 drives the mounting plate 12 to rotate, the mounting plate 12 drives the guide frame 6 to rotate, and the dust and debris at the bottom of the bellows 2 are moved, the guide frame 6 moves the dust and debris to the step part of the bellows 2, and falls from the step part of the bellows 2, and at the same time the nozzle 8 blows the dust and debris toward the step part of the bellows 2 to improve the blowing effect.

[0026] As an implementation method in this embodiment, Figure 2 and Figure 3 As shown, in order to improve the effect of the guide frame 6 in moving dust and debris, the end of the guide frame 6 is arranged to be arc-shaped, so that the guide frame 6 can move the debris to the step of the bellows 2.

[0027] The working principle of the utility model is as follows: when in use, high-pressure gas is introduced into the air main pipe 1 through the external hot air box, and the air main pipe 1 introduces high-pressure gas into the blowing pipe 4. A part of the high-pressure gas passes through the extension pipe 9 and the purge rack 5 and is sprayed out from the nozzle 8. The high-pressure gas sprayed from the nozzle 8 sweeps the dust and impurities at the bottom of the wind box 2 toward the step part of the wind box 2; another part of the high-pressure gas flows into the turbine 10, and the high-pressure gas drives the turbine 10 to rotate, the turbine 10 drives the rotating shaft 7 to rotate, and the rotating shaft 7 drives the installation The disk 12 rotates, and the mounting disk 12 drives the guide frame 6 to rotate and push the dust and debris at the bottom of the bellows 2. The guide frame 6 pushes the dust and debris to the step portion of the bellows 2 and falls from the step portion of the bellows 2. At the same time, the alignment holes 14 overlap with different air outlets 13 in succession, causing high-pressure gas to be ejected from the air outlets 13 and the alignment holes 14. The gas ejected from the alignment holes 14 sweeps away the dust and impurities near the guide frame 6, causing the impurities to be blown toward the arc-shaped portion of the guide frame 6, thereby reducing the dust and impurities at the rotating position of the guide frame 6.

[0028] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A purging device for a boiler wind box, characterized in that: Comprising: A bellows (2) and a boiler furnace (3) connected to each other. A blowing pipe (4) is fixedly connected to the side wall of the bellows (2). One end of the blowing pipe (4) located inside the bellows (2) is fixedly connected to a purging frame (5), and the bottom end is rotatably connected to a guiding frame (6). A turbine (10) is arranged inside the bottom of the blowing pipe (4). The middle of the turbine (10) is fixedly connected to a rotating shaft (7). The rotating shaft (7) is rotatably connected to the blowing pipe (4). Below the turbine (10), a chassis (11) fixedly connected to the blowing pipe (4) is provided. An air outlet hole (13) is formed in the chassis (11). The rotating shaft (7) penetrates through the chassis (11) and is rotatably connected to the chassis (11). One end of the rotating shaft (7) penetrating through the chassis (11) is fixedly connected to a mounting disc (12). The outside of the mounting disc (12) is fixedly connected to the guiding frame (6).

2. The purging device for a boiler wind box according to claim 1, characterized in that: One end of the blowing pipe (4) located inside the bellows (2) is provided with an extension pipe (9). The purging frame (5) is fixedly installed on the top extension pipe (9) and is communicated with the extension pipe (9).

3. The purging device for a boiler wind box according to claim 1, characterized in that: The turbine (10) is located inside the extension pipe (9) at the bottom of the blowing pipe (4).

4. The purging device for a boiler wind box according to claim 1, characterized in that: The number of the blowing pipes (4) is multiple, and they are arranged equidistantly on the bellows (2).

5. The purging device for a boiler wind box according to claim 1, characterized in that: The purging frame (5) is in a shape of a capital "J".

6. The purging device for a boiler wind box according to claim 1, characterized in that: Both ends of the purging frame (5) are fixedly installed with nozzles (8) facing the side of the bellows (2).

7. The purging device for a boiler wind box according to claim 2, characterized in that: The guiding frame (6) is rotatably connected to the corresponding extension pipe (9).

8. The purging device for a boiler wind box according to claim 1, characterized in that: The mounting disc (12) is provided with alignment holes (14) adapted to the air outlet holes (13).

9. The purging device for a boiler wind box according to claim 1, characterized in that: The end of the guiding frame (6) is set to be arc-shaped.

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