Cleaning mechanism capable of automatically cleaning accumulated dust in boiler smoke exhaust pipe

Abstract

The utility model discloses a cleaning mechanism capable of automatically cleaning accumulated dust in a smoke exhaust pipe of a boiler, which relates to the technical field of cleaning accumulated dust in the smoke exhaust pipe and comprises a fixed cylinder fixedly arranged at the top of the boiler and communicated with the boiler, the smoke exhaust pipe is rotatably mounted in the fixed cylinder, a driven gear is welded on the outer wall of the smoke exhaust pipe, and the driven gear is meshed with the fixed cylinder. An output shaft of the driving motor is connected with a driving gear, and the driving gear is meshed with the driven gear; a vertically-arranged lead screw nut pair is fixedly arranged on the right side wall of the support, a linear electric cylinder is fixedly arranged on the right side wall of the mounting plate, a piston rod of the linear electric cylinder extends rightwards, a connecting plate is fixedly arranged at the extending end, a supporting plate located on the left side of the smoke exhaust pipe is fixedly connected to the bottom end of a rod piece, and an arc-shaped scraping block is fixedly arranged at the left end of the supporting plate. And the arc-shaped surface of the arc-shaped scraping block is matched with the inner wall of the smoke exhaust pipe. The device has the beneficial effects that the working intensity of workers is greatly reduced, and the cleaning efficiency of an ash deposition layer in the smoke exhaust pipe is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of cleaning ash accumulation inside flue pipes, and in particular to a cleaning mechanism that can automatically clean ash accumulation inside boiler flue pipes. Background Technology

[0002] The function of a boiler in a factory is to heat water to generate high-temperature steam, which is then supplied to the production equipment within the workshop. The operating steps of a boiler in a certain factory are as follows: workers shovel coal into boiler 1. Once the coal falls into the combustion chamber, the jet flames inside ignite it. The heat generated from the combustion heats the water inside boiler 1, turning it into high-temperature steam. This high-temperature steam is then transported to the production equipment in the workshop via pipe 2. Simultaneously, the flue gas generated during the coal combustion process is discharged to the outside through the exhaust pipe 3 located at the top of boiler 1. The direction of the flue gas outflow is as follows: Figure 1 As indicated by the middle arrow.

[0003] After the boiler has been in use for a period of time, a layer of ash accumulates on the inner wall of the flue pipe 3 along its length. As the ash layer gradually thickens, it hinders the exhaust speed of the flue gas, which is detrimental to the emission of flue gas. To solve this problem, the workers first shut down the boiler 1, and then removed the flue pipe 3 from the boiler 1. After removal, the workers used tools to scrape off the ash layer adhering to the inner wall of the flue pipe 3, thus cleaning the ash layer inside the flue pipe 3.

[0004] However, while this method can remove the ash layer inside the flue pipe 3, it requires manual removal of the flue pipe 3 from the boiler 1 each time, and the ash layer on the inner wall of the flue pipe 3 must be scraped off with tools. The entire operation is done manually, which undoubtedly increases the workload of the workers. In addition, the large area of ​​the ash layer and the long time required for manual cleaning with tools reduce the cleaning efficiency of the ash layer inside the flue pipe.

[0005] Therefore, there is an urgent need for a cleaning mechanism that can greatly reduce the workload of workers and greatly improve the efficiency of cleaning the ash layer inside the exhaust pipe. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a compact cleaning mechanism that can automatically clean the ash accumulated inside the boiler flue pipe.

[0007] The purpose of this utility model is achieved through the following technical solution: a cleaning mechanism that can automatically clean the ash accumulated in the flue pipe of a boiler, which includes a fixed cylinder fixed to the top of the boiler and connected to the boiler, a flue pipe rotatably installed inside the fixed cylinder, a driven gear welded on the outer wall of the flue pipe, a bracket fixed to the top of the boiler and a drive motor, the drive motor being located on the right side of the flue pipe, a drive gear connected to the output shaft of the drive motor, and the drive gear meshing with the driven gear;

[0008] The bracket is located on the left side of the exhaust pipe. A vertically arranged screw and nut assembly is fixed on the right side wall of the bracket. A mounting plate is fixed on the right end face of the nut of the screw and nut assembly. A linear electric cylinder is fixed on the right side wall of the mounting plate. The piston rod of the linear electric cylinder extends to the right, and a connecting plate is fixed on the extended end. A vertically arranged rod is fixed on the connecting plate. A support plate located on the left side of the exhaust pipe is fixed to the bottom end of the rod. An arc-shaped scraper is fixed on the left end of the support plate. The arc-shaped surface of the arc-shaped scraper matches the inner wall of the exhaust pipe.

[0009] A bearing seat is fixed inside the fixed cylinder, and the lower end of the exhaust pipe is fixed in the inner ring of the bearing seat.

[0010] The driven gear is coaxially arranged with the exhaust pipe.

[0011] A retaining ring for shielding the bearing housing is welded to the bottom surface of the exhaust pipe.

[0012] The lead screw and nut assembly includes a lead screw module fixed to the right side wall of the bracket, a guide rail fixed to the right side wall of the lead screw module, a lead screw rotatably installed in the lead screw module, and a nut threaded onto the lead screw. A servo motor is fixed to the top of the lead screw module, and the output shaft of the servo motor is connected to the top of the lead screw. A slider is fixed to the left side wall of the nut and is slidably installed on the guide rail.

[0013] The cleaning mechanism also includes a controller, which is electrically connected to the linear electric cylinder, servo motor, and drive motor via signal lines.

[0014] This invention has the following advantages: it greatly reduces the workload of workers and greatly improves the efficiency of cleaning the ash layer inside the exhaust pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the flow of flue gas from the exhaust pipe.

[0016] Figure 2 This is a schematic diagram of the structure of this utility model;

[0017] Figure 3 for Figure 2 A schematic diagram of direction A;

[0018] Figure 4A schematic diagram showing the connection between the bracket, the lead screw and nut assembly, and the arc-shaped scraper;

[0019] Figure 5 This is a schematic diagram showing the connection between the arc-shaped scraper and the support plate;

[0020] Figure 6 for Figure 5 The main view;

[0021] Figure 7 This is a schematic diagram showing that the curved surface of the arc-shaped scraper is flush with the upper and lower sides of the inner left side wall of the exhaust pipe.

[0022] Figure 8 This is a schematic diagram showing how an arc-shaped scraper gradually scrapes off all the accumulated ash layer inside the exhaust pipe from top to bottom;

[0023] In the picture:

[0024] 1-Boiler, 2-Pipe, 3-Exhaust pipe, 4-Fixed cylinder, 5-Driven gear, 6-Bracket, 7-Drive motor, 8-Drive gear, 9-Mounting plate, 10-Linear electric cylinder, 11-Connecting plate, 12-Rod, 13-Support plate, 14-Arc scraper, 15-Retaining ring;

[0025] 16-Guide rail, 17-Lead screw, 18-Nut. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description:

[0027] like Figures 2-6 As shown, a cleaning mechanism for automatically cleaning ash accumulation inside a boiler flue pipe includes a fixed cylinder 4 fixed to the top of the boiler 1 and connected to the boiler 1. A flue pipe 3 is rotatably installed inside the fixed cylinder 4. A bearing seat is fixed inside the fixed cylinder 4, and the lower end of the flue pipe 3 is fixed in the inner ring of the bearing seat. A driven gear 5 is welded to the outer wall of the flue pipe 3, and the driven gear 5 is coaxially arranged with the flue pipe 3. The mechanism also includes a bracket 6 fixed to the top of the boiler 1 and a drive motor 7. The drive motor 7 is located on the right side of the flue pipe 3, and a drive gear 8 is connected to the output shaft of the drive motor 7, meshing with the driven gear 5. A retaining ring 15 for shielding the bearing seat is welded to the bottom surface of the flue pipe 3.

[0028] The bracket 6 is located on the left side of the exhaust pipe 3. A vertically arranged screw nut pair is fixed on the right side wall of the bracket 6. A mounting plate 9 is fixed on the right end face of the nut 18 of the screw nut pair. A linear electric cylinder 10 is fixed on the right side wall of the mounting plate 9. The piston rod of the linear electric cylinder 10 extends to the right, and a connecting plate 11 is fixed on the extended end. A vertically arranged rod 12 is fixed on the connecting plate 11. A support plate 13 located on the left side of the exhaust pipe 3 is fixed to the bottom end of the rod 12. An arc-shaped scraper 14 is fixed on the left end of the support plate 13. The arc-shaped surface of the arc-shaped scraper 14 matches the inner wall of the exhaust pipe 3.

[0029] The lead screw and nut assembly includes a lead screw module fixed to the right side wall of the bracket 6, a guide rail 16 fixed to the right side wall of the lead screw module, a lead screw 17 rotatably installed in the lead screw module, and a nut 18 threadedly connected to the lead screw 17. A servo motor is fixed to the top of the lead screw module, and the output shaft of the servo motor is connected to the top of the lead screw 17. A slider is fixed to the left side wall of the nut 18, and the slider is slidably installed on the guide rail 16.

[0030] The cleaning mechanism also includes a controller, which is electrically connected to the linear electric cylinder 10, servo motor and drive motor 7 via signal lines. The operator can control the extension or retraction of the piston rod of the linear electric cylinder 10 through the controller, and at the same time control the start or stop of the servo motor and drive motor 7, which facilitates the operator's operation and has the characteristics of high automation.

[0031] When a layer of ash accumulates on the inner wall of the exhaust pipe 3 along its length, the method for workers to clean off the ash layer is as follows:

[0032] S1. The worker controls the piston rod of the linear electric cylinder 10 to extend to the right. The piston rod drives the mounting plate 9 to move to the right, the mounting plate 9 drives the connecting plate 11 to move to the right, the connecting plate 11 drives the rod 12 to move to the right, the rod 12 drives the support plate 13 to move to the right, and the support plate 13 drives the arc-shaped scraper 14 to move to the right simultaneously. When the piston rod of the linear electric cylinder 10 is fully extended, the arc-shaped surface of the arc-shaped scraper 14 is just flush with the upper and lower sides of the left inner wall of the exhaust pipe 3. Figure 7 As shown;

[0033] S2. The worker controls the start of the drive motor 7, the drive motor 7 drives the drive gear 8 to rotate, the drive gear 8 drives the driven gear 5 to rotate, and the driven gear 5 drives the exhaust pipe 3 to rotate around the axis of the bearing seat.

[0034] S3. The servo motor controlling the lead screw and nut pair starts, driving the lead screw 17 to rotate. With the threaded engagement between the nut 18 and the lead screw 17, the nut 18 moves downwards along the lead screw 17 in a straight line. The nut 18 drives the mounting plate 9, the linear electric cylinder 10, and the connecting plate 11 to move downwards synchronously. The connecting plate 11 drives the rod 12 to move downwards, and the rod 12 drives the support plate 13 and the arc-shaped scraper 14 to move downwards synchronously. The arc-shaped scraper 14 moves downwards along the inner wall of the exhaust pipe 3, such as... Figure 8 As shown; when the arc-shaped scraper 14 moves downward in a straight line, the exhaust pipe 3 rotates, so the arc-shaped scraper 14 gradually scrapes off all the dust layer attached to the exhaust pipe 3 from top to bottom, thereby cleaning the dust layer inside the exhaust pipe 3.

[0035] S4. After cleaning, the worker first turns off the drive motor 7, and then controls the servo motor to reverse so that the nut 18 moves upward along the lead screw 17, thereby causing the linear electric cylinder 10, connecting plate 11, rod 12 and arc-shaped scraper 14 to move upward. When the arc-shaped scraper 14 comes out of the exhaust pipe 3, the worker controls the servo motor to turn off; then controls the piston rod of the linear electric cylinder 10 to retract to the left so that the arc-shaped scraper 14 moves to the left side of the exhaust pipe 3.

[0036] As can be seen from steps S1 to S3, the worker only needs to first control the piston rod of the linear electric cylinder 10 to extend to the right so that the arc-shaped scraper 14 moves to the top of the exhaust pipe 3, then control the drive motor 7 to start so that the exhaust pipe 3 rotates, and finally control the servo motor to start so that the arc-shaped surface of the arc-shaped scraper 14 moves downward in a straight line along the inner wall of the exhaust pipe 3, thereby realizing the automatic cleaning of all the dust layers attached to the inner wall of the exhaust pipe 3.

[0037] Therefore, it can be seen that there is no need for manual removal of the flue pipe 3 from the boiler 1 and then scraping off the ash layer inside the flue pipe 3 with tools. Instead, automatic cleaning is achieved, which greatly reduces the workload of workers. In addition, it also greatly shortens the time for cleaning the ash layer inside the flue pipe 3, thereby greatly improving the efficiency of cleaning the ash layer inside the flue pipe.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cleaning mechanism for automatically cleaning ash accumulated inside boiler flue pipes, characterized in that: It includes a fixed cylinder (4) fixed to the top of the boiler (1) and connected to the boiler (1), a flue pipe (3) is rotatably installed inside the fixed cylinder (4), a driven gear (5) is welded on the outer wall of the flue pipe (3), and it also includes a bracket (6) fixed to the top of the boiler (1) and a drive motor (7), the drive motor (7) is located on the right side of the flue pipe (3), and a drive gear (8) is connected to the output shaft of the drive motor (7), the drive gear (8) meshes with the driven gear (5); The bracket (6) is located on the left side of the exhaust pipe (3). A vertically arranged screw nut pair is fixed on the right side wall of the bracket (6). A mounting plate (9) is fixed on the right end face of the nut (18) of the screw nut pair. A linear electric cylinder (10) is fixed on the right side wall of the mounting plate (9). The piston rod of the linear electric cylinder (10) extends to the right, and a connecting plate (11) is fixed on the extended end. A vertically arranged rod (12) is fixed on the connecting plate (11). A support plate (13) located on the left side of the exhaust pipe (3) is fixed to the bottom end of the rod (12). An arc-shaped scraper (14) is fixed on the left end of the support plate (13). The arc-shaped surface of the arc-shaped scraper (14) matches the inner wall of the exhaust pipe (3).

2. The cleaning mechanism for automatically cleaning ash accumulation inside boiler flue pipes according to claim 1, characterized in that: The fixed cylinder (4) is fixedly provided with a bearing seat, and the lower end of the exhaust pipe (3) is fixedly provided in the inner ring of the bearing seat.

3. The cleaning mechanism for automatically cleaning ash accumulation inside boiler flue pipes according to claim 1, characterized in that: The driven gear (5) is coaxially arranged with the exhaust pipe (3).

4. The cleaning mechanism for automatically cleaning ash accumulation inside boiler flue pipes according to claim 1, characterized in that: The bottom surface of the exhaust pipe (3) is welded with a retaining ring (15) for shielding the bearing seat.

5. The cleaning mechanism for automatically cleaning ash accumulation inside boiler flue pipes according to claim 1, characterized in that: The lead screw and nut assembly includes a lead screw module fixed on the right side wall of the bracket (6), a guide rail (16) fixed on the right side wall of the lead screw module, a lead screw (17) rotatably installed in the lead screw module, and a nut (18) threadedly connected to the lead screw (17). A servo motor is fixed on the top of the lead screw module, and the output shaft of the servo motor is connected to the top of the lead screw (17). A slider is fixed on the left side wall of the nut (18), and the slider is slidably installed on the guide rail (16).

6. The cleaning mechanism for automatically cleaning ash accumulation inside boiler flue pipes according to claim 1, characterized in that: The cleaning mechanism also includes a controller, which is electrically connected to the linear electric cylinder (10), servo motor and drive motor (7) via signal lines.

Images