A cleaning device for regenerative elements of air preheaters

Abstract

The utility model is specifically related to a kind of cleaning device of air preheater heat storage element, including the conveying platform of horizontal arrangement, the bottom fixedly connected with support leg of platform, platform is provided with conveying device, and placing bottom plate is placed on conveying device, and walking wheel is symmetrically installed on the both sides of the bottom of placing bottom plate, walking wheel walks on track, track is fixedly connected on the top surface of platform, the middle position of platform is provided with protective cover, and electric control cabinet is installed on the outside of protective cover, cleaning device, cleaning device includes two symmetrically arranged connecting pipes, connecting pipe is horizontally arranged, and a plurality of spray heads are installed on the opposite two sides of connecting pipe, connecting pipe is connected with water source, connecting pipe is installed on lifting mechanism, and lifting mechanism drives connecting pipe to move up and down.

Description

Technical Field

[0001] This utility model relates to the field of air preheater equipment, specifically to a cleaning device for the heat storage element of an air preheater. Background Technology

[0002] An air preheater, also known as an air heat exchanger, is a device that preheats the air entering the boiler to a certain temperature through internal heat exchange fins in the flue gas duct at the boiler's tail end. It is used to improve the boiler's heat exchange performance and reduce energy consumption. Air preheaters are generally classified into three types: plate, rotary, and tubular. Plate air preheaters use multiple layers of textured metal plates for heat exchange, providing a large heat exchange area and efficient heat transfer.

[0003] As the core component of the air preheater, the heat storage element needs to be cleaned regularly to improve heat exchange efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cleaning device for the heat storage elements of an air preheater.

[0005] The technical solution of this utility model is implemented as follows: A cleaning device for the heat storage element of an air preheater includes a horizontally arranged conveyor platform, with support legs fixedly connected to the bottom of the platform. A conveyor device is arranged on the platform, and a base plate is placed on the conveyor device. Traveling wheels are symmetrically installed on both sides of the bottom of the base plate. The traveling wheels travel on a track, which is fixedly connected to the top surface of the platform. A protective cover is arranged in the middle of the platform, and an electrical control cabinet is installed on the outside of the protective cover. The cleaning device includes two symmetrically arranged connecting pipes. The connecting pipes are horizontally arranged, and several nozzles are installed on the two opposite sides of the connecting pipes. The connecting pipes are connected to a water source and are installed on a lifting mechanism. The lifting mechanism drives the connecting pipes to move up and down.

[0006] The lifting mechanism includes a movable base, with a connecting pipe fixedly connected to the side of the pipe opposite to the nozzle. The movable base is fixedly connected to the bottom of a movable rack, which meshes with a drive gear. The drive gear is driven by a reduction motor, and the movable rack extends upward to the outside of the top plate of the protective cover. The geared motor is installed on the outside of the top plate of the protective cover.

[0007] Two guide rails are provided on both sides of the movable rack, and a guide wheel slides on each guide rail. The guide wheel is fixedly installed on the side of the movable seat, and the rim of the guide wheel contacts the side of the guide rail.

[0008] The protective cover has a guide wheel on the outside of the top plate and on the side of the guide rail away from the rack. The guide wheel is rotatably mounted on the mounting base, which is installed on the outside of the top plate of the protective cover.

[0009] The side of the movable rack is provided with a limiting mechanism to limit the lowest and highest points of the movable rack. The limiting mechanism includes a limiting mounting plate, which is vertically fixed to the outside of the top plate of the protective cover. Limit switches are installed on the upper and lower parts of the limiting mounting plate.

[0010] The limit switch is fixed on the mounting plate, which has a slotted hole. The mounting plate is fixed to the limit mounting plate with bolts that pass through the slotted hole.

[0011] The conveying device includes a conveyor chain, with a drive sprocket connected to one side of the conveyor chain. The drive sprocket is mounted on the drive shaft of a geared motor, which is mounted at one end of the platform. A driven sprocket is connected to the other end of the conveyor chain.

[0012] The driven sprocket is rotatably connected to the connecting shaft. Both ends of the connecting shaft extend to the outside of the side plate of the mounting base. External threads are provided on the extensions at both ends of the connecting shaft. The external threads of the connecting shaft are connected to the fixing nuts. Adjustment holes are provided on the two side plates of the mounting base. The adjustment holes are elongated structures.

[0013] The beneficial effects of this utility model are as follows: The base plate of this utility model is used to place multiple heat storage elements. The base plate is moved into the protective cover by a conveyor chain and cleaned by a cleaning device; the nozzle sprays water to rinse the heat storage elements. The nozzle is moved vertically by a lifting mechanism. The moving rack moves up and down by a drive gear. The guide rail and guide wheel one provide guidance; guide wheel two limits the start of the rack; limit switch limits the highest and lowest positions of the moving rack. Attached Figure Description

[0014] Figure 1 This is the main structural view of the present invention.

[0015] Figure 2 This is a top view of the platform connecting to the base plate.

[0016] Figure 3 This is the left view of the structure of this utility model.

[0017] Figure 4 This is a schematic diagram of a partial structure.

[0018] Figure 5 for Figure 1 A magnified structural diagram of point A in the middle.

[0019] Reference numerals: 1. Platform; 2. Connecting pipe; 3. Nozzle; 4. Movable seat; 5. Movable rack; 6. Drive gear; 7. Gear motor one; 8. Protective cover; 9. Guide rail; 10. Guide wheel one; 11. Guide wheel two; 12. Mounting seat one; 13. Limit mounting plate; 14. Limit switch; 15. Fixing plate; 16. Strip hole; 17. Bolt; 18. Conveyor chain; 19. Drive sprocket; 20. Gear motor; 21. Driven sprocket; 22. Placement base plate; 23. Traveling wheel; 24. Track; 25. Collision part; 26. Connecting shaft; 27. Mounting seat two; 28. Fixing nut; 29. ​​Adjustment hole; 30. Electrical control cabinet. Detailed Implementation

[0020] like Figure 1-5 As shown, a cleaning device for an air preheater heat storage element includes a horizontally arranged conveyor platform 1. Support legs are fixedly connected to the bottom of the platform 1. A conveyor device is installed on the platform 1, and a base plate 22 is placed on the conveyor device. Traveling wheels 23 are symmetrically installed on both sides of the bottom of the base plate 22. The traveling wheels 23 travel on a track 24, which is fixedly connected to the top surface of the platform 1. A protective cover 8 is installed in the middle of the platform 1, and an electrical control cabinet 30 is installed on the outside of the protective cover 8. The cleaning device includes two symmetrically arranged connecting pipes 2, which are horizontally arranged. Several nozzles 3 are installed on the opposite sides of the connecting pipes 2. The connecting pipes 2 are connected to a water source and are mounted on a lifting mechanism, which drives the connecting pipes 2 to move up and down.

[0021] Specifically, the heat storage element has a cuboid structure. During cleaning, the heat storage element is placed on the top surface of the placement base plate 22, which is made of a grid plate. The conveying device drives the placement base plate 22 to move. The traveling wheels 23 at the bottom of the placement base plate 22 will travel along the track 24 to transport the heat storage element to the cleaning device. The water source is connected, and water enters the connecting pipe 2 and is finally sprayed out through the nozzle 3 to rinse both sides of the heat storage element. The lifting mechanism drives the connecting pipe 2 to move up and down, thereby moving the nozzle 3 up and down and spraying the heat storage element repeatedly.

[0022] The lifting mechanism includes a movable base 4. The connecting pipe 2 is fixedly connected to the movable base 4 on the side opposite to the nozzle 3. The movable base 4 is fixedly connected to the bottom of the movable rack 5. The movable rack 5 is engaged with a drive gear 6. The drive gear 6 is driven by a reduction motor 7, which is installed outside the top plate of the protective cover 8. The movable rack 5 extends upward to the outside of the top plate of the protective cover 8. Specifically, when the reduction motor 7 is started, the drive gear 6 rotates, and the movable rack 5, which is engaged with the drive gear 6, moves up and down. The movable base 4, which is fixedly connected to the movable rack 5, moves up and down, causing the nozzle 3 to move up and down for cleaning. One end of the connecting pipe 2 is connected to the water source through a hose. When the connecting pipe 2 moves up and down, the hose must be securely connected to prevent it from coming loose.

[0023] Two guide rails 9 are provided on both sides of the movable rack 5. A guide wheel 10 slides on each guide rail 9. The guide wheel 10 is fixedly installed on the side of the movable seat 4. The rim of the guide wheel 10 contacts the side of the guide rail 9. Specifically, when the movable seat 4 moves, the guide wheel 10 moves along the guide rail 9, and the guide rail 9 plays a guiding role.

[0024] A guide wheel 11 is located on the outside of the top plate of the protective cover 8 and on the side of the moving rack 5 away from the rack. The guide wheel 11 is rotatably mounted on the mounting base 12, which is installed on the outside of the top plate of the protective cover 8. Specifically, when the moving rack 5 moves up and down, the guide wheel 11 will rotate without affecting the movement of the moving rack 5, and will limit the movement of the moving rack 5.

[0025] The side of the moving rack 5 is provided with a limiting mechanism to limit the lowest and highest points of the moving rack 5. The limiting mechanism includes a limiting mounting plate 13, which is vertically fixed to the outside of the top plate of the protective cover 8. Limit switches 14 are installed on the upper and lower parts of the limiting mounting plate. A collision part 25 is fixedly connected to the side of the moving rack 5 near the limit switch 14. As shown in the figure, the collision part 25 includes a vertical plate, and two inclined plates are connected to the two ends of the vertical plate respectively. Specifically, the limit switch 14 is a hinged arm type limit switch. When the moving rack 5 rises or falls, the upper or lower inclined plate of the collision part 25 will collide with the nearby limit switch 14, and transmit the signal to the controller. The controller drives the geared motor 7 to stop, thereby stopping the moving rack 5.

[0026] The limit switch 14 is fixed on the fixing plate 15. The limit mounting plate 13 has a strip hole 16. The fixing plate 15 is fixed on the limit mounting plate 13 by bolts 17 and nuts. The bolts 17 are set through the strip hole 16. Specifically, the bolts 17 can move vertically in the strip hole 16 to adjust the position of the limit switch 14. After the position is fixed, it is fixed by nuts.

[0027] The conveying device includes a conveyor chain 18, with a drive sprocket 19 connected to one side of the conveyor chain 18. The drive sprocket 19 is mounted on the drive shaft of a second geared motor 20, which is mounted at one end of the platform 1. A driven sprocket 21 is connected to the other end of the conveyor chain 18. The bottom surface of the placement base plate 22 is located on the top surface of the conveyor chain 18, and the track 24 is located on both sides of the conveyor chain 18. Specifically, when the second geared motor 20 starts, it drives the drive chain 18 to move. The drive chain 18 is a closed loop, and the placement base plate 22 is located on the top surface of the drive chain 18. When the drive chain 18 moves, it drives the placement base plate 22 to move.

[0028] Driven sprocket 21 is rotatably connected to connecting shaft 26. Both ends of connecting shaft 26 extend to the outside of the side plate of mounting base 27. External threads are provided on the extensions at both ends of connecting shaft 26. Fixing nuts 28 are connected to the external threads of connecting shaft 26. Adjustment holes 29 are provided on the two side plates of mounting base 27. The adjustment holes 29 are elongated structures. Specifically, driven sprocket 21 is connected to connecting shaft 26 through bearings. Bushings are installed on both sides of connecting shaft 26 located on driven sprocket 21. Connecting shaft 26 can move along adjustment holes 29 to adjust the position of driven sprocket 21 and realize the tension adjustment of transmission chain 18.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cleaning device for an air preheater heat storage element, comprising a horizontally arranged conveyor platform, with support legs fixedly connected to the bottom of the platform, a conveyor device on the platform, a base plate placed on the conveyor device, symmetrically mounted wheels on both sides of the bottom of the base plate, the wheels traveling on a track fixedly connected to the top surface of the platform, a protective cover in the middle of the platform, an electrical control cabinet mounted on the outside of the protective cover, and a cleaning device comprising two symmetrically arranged connecting pipes, the connecting pipes being horizontally arranged, with several nozzles mounted on opposite sides of the connecting pipes, the connecting pipes being connected to a water source, and the connecting pipes being mounted on a lifting mechanism, the lifting mechanism driving the connecting pipes to move up and down.

2. The cleaning device for the heat storage element of an air preheater according to claim 1, characterized in that: The lifting mechanism includes a movable base, a connecting pipe fixedly connected to the movable base on the side away from the nozzle, the movable base fixedly connected to the bottom of the movable rack, the movable rack meshing with a drive gear, the drive gear being driven by a reduction motor, the movable rack extending upward to the outside of the top plate of the protective cover, and the reduction motor being installed on the outside of the top plate of the protective cover.

3. The cleaning device for an air preheater heat storage element according to claim 1, characterized in that: Two guide rails are provided on both sides of the movable rack, and a guide wheel slides on each guide rail. The guide wheel is fixedly installed on the side of the movable seat, and the rim of the guide wheel contacts the side of the guide rail.

4. The cleaning device for the heat storage element of an air preheater according to claim 3, characterized in that: The protective cover has a guide wheel on the outside of the top plate and on the side of the guide rail away from the rack. The guide wheel is rotatably mounted on the mounting base, which is installed on the outside of the top plate of the protective cover.

5. A cleaning device for an air preheater heat storage element according to claim 3, characterized in that: The side of the movable rack is provided with a limiting mechanism to limit the lowest and highest points of the movable rack. The limiting mechanism includes a limiting mounting plate, which is vertically fixed to the outside of the top plate of the protective cover. Limit switches are installed on the upper and lower parts of the limiting mounting plate.

6. A cleaning device for an air preheater heat storage element according to claim 3, characterized in that: The limit switch is fixed on the mounting plate, which has a slotted hole. The mounting plate is fixed to the limit mounting plate with bolts that pass through the slotted hole.

7. A cleaning device for an air preheater heat storage element according to claim 3, characterized in that: The conveying device includes a conveying chain, with a drive sprocket connected to one side of the conveying chain. The drive sprocket is mounted on the drive shaft of a second geared motor, which is mounted at one end of the platform. A driven sprocket is connected to the other end of the conveying chain.

8. A cleaning device for an air preheater heat storage element according to claim 3, characterized in that: The driven sprocket is rotatably connected to the connecting shaft. Both ends of the connecting shaft extend to the outside of the side plate of the mounting base. External threads are provided on the extensions at both ends of the connecting shaft. The external threads of the connecting shaft are connected to the fixing nuts. Adjustment holes are provided on the two side plates of the mounting base. The adjustment holes are elongated structures.

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