Anti-ash-blocking dredging device for boiler of thermal power plant

Abstract

The invention relates to the technical field of boiler anti-blocking, and discloses a thermal power plant boiler anti-blocking dredging device which comprises a water tank, a rotating ring is fixedly inserted into the water tank, a fixing shaft is movably connected into the rotating ring, and an adjustable telescopic pull rod assembly is arranged at the top end of the fixing shaft. A power assembly for driving the rotating ring to rotate is arranged on one side of the fixing shaft, telescopic rods are fixedly connected to the two sides of the bottom end of the rotating ring, a fixing frame is fixedly connected to the extension ends of the telescopic rods, a brush is movably connected to the fixing frame, a connecting pipe is fixedly connected to the fixing frame, and a plurality of spray heads are fixedly connected to one side of the connecting pipe in a communicating mode; a mounting frame is fixedly connected to the bottom of the fixing frame, and a scraper is fixedly connected to one side of the mounting frame, so that the inner wall of the boiler smoke exhaust pipe is cleaned more sufficiently and efficiently, and the problems that the device is difficult to carry and inconvenient to store due to the fact that the device is long can be solved through an adjustable telescopic pull rod assembly.

Description

Technical Field

[0001] The invention relates to the technical field of boiler anti-blocking, in particular to an anti-blocking ash dredging device for a thermal power plant boiler. Background Art

[0002] Ash accumulation is a common problem in boiler exhaust pipes in thermal power plants. These pipes are usually cylindrical, and appropriate ash-blocking and dredging devices must be selected based on the operating conditions and ash accumulation characteristics. These devices are of great significance to the safe and economical operation of thermal power plants. Reasonable selection and use of these devices can effectively resolve boiler ash accumulation issues and improve boiler performance and reliability.

[0003] In the existing technology, it is difficult to completely solve the problem of ash accumulation with strong adhesion, large particles or thick accumulation by relying solely on ultrasonic vibration technology. Even under the action of ultrasonic vibration, it may only partially fall off and cannot be completely removed, resulting in serious ash residue on the heating surface. The residual ash will significantly affect the heat exchange efficiency, reduce the thermal energy utilization rate of the equipment, and increase energy consumption. For this reason, we have proposed a device for preventing and clearing ash from blocking boilers in thermal power plants. Summary of the Invention

[0004] (1) Technical problems solved In view of the shortcomings of the existing technology, the present invention provides a device for preventing and clearing ash from blocking in thermal power plant boilers, which is mainly used to solve the problem that it is difficult to completely solve the problem by relying solely on ultrasonic vibration technology. Even under the action of ultrasonic vibration, the ash may only partially fall off and cannot be completely removed, resulting in serious ash residue on the heating surface.

[0005] (2) Technical solution To achieve the above object, the present invention provides the following technical solutions: The top of the fixed shaft is provided with an adjustable retractable pull rod assembly, and one side of the fixed shaft is provided with a power assembly that drives the rotating ring to rotate. The two sides of the rotating ring are fixedly connected to the telescopic rod, and the extended end of the telescopic rod is fixedly connected to the fixed frame. The fixed frame is movably connected with a brush. The fixed frame is fixedly connected to a connecting pipe, and one side of the connecting pipe is connected to and fixed with a plurality of nozzles. The bottom of the fixed frame is fixedly connected to a mounting frame, and a scraper is fixedly connected to one side of the mounting frame. A water passing assembly is provided between the water tank and the connecting pipe, and the bottom end of the fixed shaft is movably connected to a rotating frame, and an adjusting assembly is provided between the rotating frame and the fixed frame. The adjusting assembly includes two connecting frames, which are fixed to one side of the fixed frame by bolts, and the connecting frame is fixed to the rotating frame. The bottom frame part of the rotating frame is movably connected with a bidirectional screw rod, and the outer side of the bidirectional screw rod is movably connected to two connecting frames, and the connecting frame is fixed to the fixed frame at the corresponding position.

[0006] Furthermore, the pull rod assembly includes a connecting rod, which has two sliding grooves inside. The top of the fixed shaft is fixedly connected to two sliding rods, and the sliding rods are slidably connected to the sliding grooves at corresponding positions. Two threaded grooves are provided on the outside of the connecting rod, and both threaded grooves are movably connected to threaded rods. A slot is provided on the sliding rod, and the threaded rod is plugged into the slots at corresponding positions.

[0007] Based on the above scheme, the power assembly includes a first fixed plate, which is fixed to one side of the fixed shaft by bolts, the upper surface of the first fixed plate is fixedly connected to the motor, the bottom of the first fixed plate is movably connected to the first gear, and one end of the motor output shaft passes through the first fixed plate and is fixed to the first gear, the top of the rotating ring passes through the water tank and is keyed to the first gear ring, and the first gear ring is meshed with the first gear.

[0008] As a further solution of the present invention, the water flow assembly includes two feed pipes, which are connected and fixed at the bottom of the water tank. The bottoms of the two feed pipes are connected and fixed with a water pipe, one end of the water pipe is connected and fixed with a hose, and the hose is connected to the connecting pipe at the corresponding position. The inside of the water pipe is movably connected with a push rod, the outside of the push rod is fixedly connected with a fixing ring, the outside of the push rod is sleeved with a spring, and the two ends of the spring are respectively fixed to the water pipe and the fixing ring, and the bottom of the rotating ring is provided with a pushing assembly for pushing the push rod to move horizontally.

[0009] Furthermore, the pushing assembly includes a second fixed plate, which is welded to one side of the bottom end of the rotating ring. The bottom of the second fixed plate is movably connected to a rotating shaft, the top of the rotating shaft is fixedly connected to a cam, and the cam is in contact with the push rod. The bottom end of the rotating shaft is keyed to a second gear, the bottom end of the fixed shaft passes through the water tank and the rotating ring and is fixedly connected to a second gear ring, and the second gear ring is meshed with the second gear.

[0010] On the basis of the above solution, a check valve is fixed on the feed pipe.

[0011] As a further solution of the present invention, both ends of the rotating ring pass through the water tank.

[0012] Furthermore, a knob is fixedly connected to the middle position of the bidirectional screw rod.

[0013] (3) Beneficial effects Compared with the prior art, the present invention provides a device for preventing ash blockage and clearing boilers in thermal power plants, which has the following beneficial effects: 1. The present invention adopts a combination of multiple cleaning methods. The inner wall of the boiler exhaust pipe is cleaned by the rotation of the brush and scraper. At the same time, a water-passing component is provided to spray the cleaning liquid in the water tank through the nozzle onto the inner wall of the exhaust pipe to achieve auxiliary cleaning. By combining physical cleaning with water spray assistance, the inner wall of the pipe can be cleaned more fully and efficiently, thereby improving the cleaning effect.

[0014] 2. The utility model is provided with an adjustable and retractable pull rod assembly. By pulling the connecting rod to change the position of the slide rod in the slide groove, the length of the device can be adjusted and fixed, avoiding the difficulty in carrying and inconvenience in storage caused by the long length of the device, and facilitating the staff to use and store the device in different scenarios.

[0015] 3. The present invention uses an adjustment component to enable the bidirectional screw to drive the brush and scraper to move outward respectively. The distance can be adjusted within the adaptation range according to the inner diameter of the boiler exhaust pipe, so that the device can clean the inner wall of the boiler exhaust pipe of different diameters, thereby enhancing the versatility and adaptability of the device.

[0016] 4. The present invention can effectively prevent the liquid in the water pipe from flowing back through the check valve, thereby ensuring the normal operation of the water flow component and maintaining the stability and continuity of the cleaning process.

[0017] 5. In the present invention, the cam on the push assembly is rotated to push the push rod, which, in conjunction with the use of the spring, provides pressure for the liquid sprayed from the nozzle, further enhancing the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a device for preventing ash blockage and clearing ash from a thermal power plant boiler proposed by the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the connecting rod of a thermal power plant boiler ash blocking prevention and dredging device proposed by the present invention; Figure 3 This is a partially enlarged structural diagram of a thermal power plant boiler ash blocking prevention and dredging device proposed by the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of a water guide pipe of a thermal power plant boiler ash blocking prevention and dredging device proposed by the present invention; Figure 5 The present invention provides a partial cross-sectional structural diagram of a device for preventing ash blockage and clearing ash from a thermal power plant boiler.

[0019] In the figure: 1. connecting rod; 2. fixed shaft; 3. rotating ring; 4. water tank; 5. sliding rod; 6. slot; 7. threaded rod; 8. threaded groove; 9. sliding groove; 10. first gear; 11. first fixed plate; 12. first gear ring; 13. feeding pipe; 14. telescopic rod; 15. fixing frame; 16. brush; 17. nozzle; 18. scraper; 19. mounting frame; 20. connecting pipe; 21. water pipe; 22. hose; 23. second fixed plate; 24. fixing ring; 25. spring; 26. check valve; 27. second gear ring; 28. push rod; 29. ​​second gear; 30. cam; 31. two-way screw rod; 32. connecting frame; 33. rotating frame. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Reference Figure 1-Figure 5When the cam 1 is in the closed position, the cam 1 is rotated to move the cam 2 and the cam 3 is rotated to move the cam 2 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3 and the cam 3 is rotated to move the cam 3

[0022] In particular, one side of the fixed shaft 2 is provided with a power assembly that drives the rotating ring 3 to rotate, and the power assembly includes a first fixed plate 11, which is fixed to one side of the fixed shaft 2 by bolts, and a motor is fixed to the upper surface of the first fixed plate 11 by bolts, and the bottom of the first fixed plate 11 is rotatably connected to the first gear 10, and one end of the motor output shaft passes through the first fixed plate 11 and is fixed to the first gear 10, the top of the rotating ring 3 passes through the water tank 4 and is keyed to the first gear ring 12, and the first gear ring 12 is meshed with the first gear 10, the motor drives the first gear 10 to rotate, and the rotating ring 3 is rotated by meshing with the first gear ring 12.

[0023] In the present invention, telescopic rods 14 are fixed to both sides of the bottom end of the rotating ring 3 by bolts, and the extended end of the telescopic rod 14 is fixed to a fixing frame 15 by bolts. The telescopic rod 14 can guide the fixing frame 15, and a brush 16 is rotatably connected to the fixing frame 15. A connecting pipe 20 is fixed to the fixing frame 15 by bolts, and a plurality of nozzles 17 are connected and fixed to one side of the connecting pipe 20. A mounting frame 19 is fixed to the bottom of the fixing frame 15 by bolts, and a scraper 18 is fixed to one side of the mounting frame 19 by bolts. The rotating ring 3 rotates to rotate the water tank 4, and at the same time, when the rotating ring 3 rotates, it drives The telescopic rod 14, the fixing frame 15, the brush 16, the nozzle 17 and the scraper 18 rotate together, so that the brush 16 and the scraper 18 clean the inner wall of the boiler exhaust pipe. A water supply assembly is provided between the water tank 4 and the connecting pipe 20. The water supply assembly includes two feed pipes 13. The two feed pipes 13 are connected and fixed at the bottom of the water tank 4. The bottoms of the two feed pipes 13 are connected and fixed with a water pipe 21. One end of the water pipe 21 is connected and fixed with a hose 22, and the hose 22 is connected to the connecting pipe 20 at the corresponding position. The inside of the water pipe 21 is slidably connected to a push rod 28, and the outside of the push rod 28 is connected to the outside of the push rod 28. A fixing ring 24 is welded on the side, a spring 25 is sleeved on the outside of the push rod 28, and the two ends of the spring 25 are respectively fixed to the water pipe 21 and the fixing ring 24. The bottom of the rotating ring 3 is provided with a pushing component for pushing the push rod 28 to move horizontally. The pushing component includes a second fixing plate 23, the second fixing plate 23 is welded to one side of the bottom end of the rotating ring 3, the bottom of the second fixing plate 23 is rotatably connected to a rotating shaft, a cam 30 is welded on the top of the rotating shaft, and the cam 30 is in contact with the push rod 28. The bottom end of the rotating shaft is keyed to a second gear 29. The bottom end of the fixed shaft 2 passes through the water tank 4 and the rotating ring 3 and A second gear ring 27 is welded thereto, and the second gear ring 27 is meshed with the second gear 29. The rotating ring 3 rotates to cause the second gear ring 27 to drive the second gear 29 to rotate, and the cam 30 rotates accordingly, pushing the push rod 28 to move horizontally in the water pipe 21. When the push rod 28 moves, it compresses or stretches the spring 25 to control the circulation and pressure of the water in the water pipe 21. The water in the water tank 4 flows through the feed pipe 13, the water pipe 21, and the hose 22 to the connecting pipe 20, and is finally sprayed out from the nozzle 17 to assist in cleaning. A check valve 26 is fixed on the feed pipe 13 to prevent the liquid in the water pipe 21 from flowing back.

[0024] It should be noted that the bottom end of the fixed shaft 2 is rotatably connected to a rotating frame 33, and an adjustment component is provided between the rotating frame 33 and the fixed frame 15. The adjustment component includes two connecting frames 32, which are fixed to one side of the fixed frame 15 by bolts, and the connecting frames 32 are fixed to the rotating frame 33. The bottom frame part of the rotating frame 33 is rotatably connected to a bidirectional screw rod 31, and the outer side of the bidirectional screw rod 31 is threadedly connected to the two connecting frames 32, and the connecting frames 32 are fixed to the fixed frames 15 at the corresponding positions. Both ends of the rotating ring 3 pass through the water tank 4. A knob is fixed in the middle position of the bidirectional screw rod 31 by a bolt. The brush 16 and the scraper 18 are located on the same vertical plane. The distance between the two brushes 16 is adjusted according to the inner diameter of the boiler exhaust pipe. By turning the knob, the bidirectional screw rod 31 drives the connecting frame 32 to move, so that the fixing frame 15 drives the brushes 16 to move outward respectively until they contact the inner wall of the boiler exhaust pipe. At the same time, the scraper 18 contacts the inside of the boiler exhaust pipe, so that the device can clean the inner wall of the boiler exhaust pipe of different diameters within the adaptation range.

[0025] The working principle of this embodiment is as follows: when it is necessary to clean impurities in the boiler exhaust pipe, first adjust the length of the pull rod assembly adjustment device, that is, pull the connecting rod 1 to change the position of the slide rod 5 in the slide groove 9 until the device between the connecting rod 1 and the slide rod 5 is adjusted to the required length, and through the cooperation of the threaded rod 7 and the threaded groove 8, rotate and insert it into the slot 6 to achieve fixation.

[0026] Then, insert the device deep into the position where the boiler exhaust pipe needs to be cleaned, adjust the distance between the two brushes 16 according to the inner diameter of the boiler exhaust pipe, turn the knob to make the bidirectional screw rod 31 drive the connecting frame 32 to move, so that the fixing frame 15 drives the brushes 16 to move outward respectively until they contact the inner wall of the boiler exhaust pipe, and at the same time, the scraper 18 contacts the inside of the boiler exhaust pipe.

[0027] Then start the motor, which drives the first gear 10 to rotate. By meshing with the first gear ring 12, the rotating ring 3 drives the water tank 4 to rotate. When the rotating ring 3 rotates, it drives the telescopic rod 14, the fixing frame 15, the brush 16, the nozzle 17 and the scraper 18 to rotate together, so that the brush 16 and the scraper 18 clean the inner wall of the boiler exhaust pipe to remove impurities.

[0028] At the same time, the rotating ring 3 rotates to cause the second gear ring 27 to drive the second gear 29 to rotate, and the cam 30 rotates accordingly, and pushes the push rod 28 to move horizontally in the water pipe 21. When the push rod 28 moves, it compresses or stretches the spring 25 to control the flow and pressure of water in the water pipe 21. The water in the water tank 4 flows through the feed pipe 13, the water pipe 21, and the hose 22 to the connecting pipe 20, and is finally sprayed out from the nozzle 17 to assist in cleaning.

[0029] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device that performs control such as a computer.

[0030] In the description herein, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood broadly. For example, they may refer to fixed connection, mechanical connection, electrical connection, or direct connection. Those skilled in the art will understand the specific meanings of these terms in the present invention.

[0031] In the description herein, it is to be noted that the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements that are inherent to such process, method, article, or apparatus.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for preventing ash blockage and clearing boilers in thermal power plants, comprising a water tank (4), characterized in that: A rotating ring (3) is fixedly connected inside the water tank (4), and a fixed shaft (2) is movably connected inside the rotating ring (3). An adjustable telescopic pull rod assembly is provided at the top of the fixed shaft (2), and a power assembly for driving the rotating ring (3) to rotate is provided on one side of the fixed shaft (2). Both sides of the bottom end of the rotating ring (3) are fixedly connected with telescopic rods (14), and the extended end of the telescopic rod (14) is fixedly connected with a fixing frame (15). A brush (16) is movably connected to the fixing frame (15). A connecting pipe (20) is fixedly connected to the fixing frame (15), and a plurality of nozzles (17) are connected and fixed on one side of the connecting pipe (20). The bottom of the fixing frame (15) is fixedly connected with a mounting frame (19). A scraper (18) is fixedly connected to one side of the mounting frame (19), a water-passing assembly is provided between the water tank (4) and the connecting pipe (20), a rotating frame (33) is movably connected to the bottom end of the fixed shaft (2), an adjustment assembly is provided between the rotating frame (33) and the fixed frame (15), the adjustment assembly comprising two connecting frames (32), the two connecting frames (32) being fixed to one side of the fixed frame (15) by bolts, and the connecting frames (32) being fixed to the rotating frame (33), a bottom frame portion of the rotating frame (33) being movably connected to a bidirectional screw rod (31), an outer side of the bidirectional screw rod (31) being movably connected to two connecting frames (32), and the connecting frames (32) being fixed to the fixed frames (15) at corresponding positions.

2. The device for preventing ash blockage and clearing boiler ash in thermal power plant according to claim 1, characterized in that: The pull rod assembly includes a connecting rod (1), two sliding grooves (9) are provided inside the connecting rod (1), the top end of the fixed shaft (2) is fixedly connected to two sliding rods (5), and the sliding rods (5) are slidably connected to the sliding grooves (9) at corresponding positions, the outer side of the connecting rod (1) is provided with two threaded grooves (8), both of the two threaded grooves (8) are movably connected to the threaded rod (7), the sliding rod (5) is provided with a slot (6), and the threaded rod (7) is plugged into the slot (6) at the corresponding position.

3. The device for preventing ash blockage and clearing boiler ash in thermal power plant according to claim 1, characterized in that: The power assembly comprises a first fixed plate (11), the first fixed plate (11) being fixed to one side of the fixed shaft (2) by means of bolts, the upper surface of the first fixed plate (11) being fixedly connected to a motor, the bottom of the first fixed plate (11) being movably connected to a first gear (10), and one end of the motor output shaft passing through the first fixed plate (11) and being fixed to the first gear (10), the top end of the rotating ring (3) passing through the water tank (4) and being key-connected to a first gear ring (12), and the first gear ring (12) being meshed with the first gear (10).

4. The device for preventing ash blockage and clearing boiler ash in thermal power plant according to claim 1, characterized in that: The water-passing assembly comprises two feed pipes (13), the two feed pipes (13) are connected and fixed at the bottom of the water tank (4), the bottoms of the two feed pipes (13) are connected and fixed with a water pipe (21), one end of the water pipe (21) is connected and fixed with a hose (22), and the hose (22) is connected to a connecting pipe (20) at a corresponding position, the inside of the water pipe (21) is movably connected with a push rod (28), the outside of the push rod (28) is fixedly connected with a fixing ring (24), the outside of the push rod (28) is sleeved with a spring (25), and the two ends of the spring (25) are respectively fixed to the water pipe (21) and the fixing ring (24), and the bottom of the rotating ring (3) is provided with a pushing assembly for pushing the push rod (28) to move horizontally.

5. The device for preventing ash blockage and clearing boiler ash in thermal power plants according to claim 4, characterized in that: The pushing assembly comprises a second fixed plate (23), the second fixed plate (23) being welded to one side of the bottom end of the rotating ring (3), the bottom of the second fixed plate (23) being movably connected to a rotating shaft, the top end of the rotating shaft being fixedly connected to a cam (30), and the cam (30) being in contact with the push rod (28), the bottom end of the rotating shaft being key-connected to a second gear (29), the bottom end of the fixed shaft (2) passing through the water tank (4) and the rotating ring (3) and being fixedly connected to a second gear ring (27), and the second gear ring (27) being meshed with the second gear (29).

6. The device for preventing ash blockage and clearing boiler ash in thermal power plant according to claim 4, characterized in that: A check valve (26) is fixed on the feed pipe (13).

7. The device for preventing ash blockage and clearing boiler ash in thermal power plant according to claim 1, characterized in that: Both ends of the rotating ring (3) pass through the water tank (4).

8. The device for preventing ash blockage and clearing boiler ash in thermal power plants according to claim 1, characterized in that: A knob is fixedly connected to the middle position of the bidirectional screw rod (31).

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