Air preheater regenerative element cleaning device convenient to disassemble

Abstract

The utility model discloses a kind of air preheater regenerative element cleaning devices of convenient dismounting, it is related to cleaning device technical field, including device base, sewage bin is arranged inside the device base, support box body is fixedly installed in the middle above sewage bin, and clamping frame is slidably connected in the left and right two sliding grooves of support box body upper surface, the left and right sides of the upper surface of device base are evenly provided with roof rack, and slide bar is fixedly installed in the front and back sides of roof rack bottom, horizontal frame is slidably connected outside slide bar, and the side of horizontal frame close to device base is evenly provided with several high-pressure water guns. The air preheater regenerative element cleaning device of convenient dismounting solves the problem that traditional device is complicated to dismount, not completely cleaned, the device quickly dismounts element, cleaning efficiency is improved, is suitable for different width regenerative element cleaning, provides automated solution for the efficient maintenance of air preheater.

Description

Technical Field

[0001] This utility model relates to the field of cleaning device technology, specifically a cleaning device for air preheater heat storage elements that is easy to disassemble and assemble. Background Technology

[0002] Air preheater heat storage element cleaning is an operation targeting the cleaning of heat storage plates, such as corrugated plates, inside the boiler air preheater to remove accumulated ash and scale. During operation, these elements are easily clogged by fly ash, ammonium bisulfate, and other substances in the flue gas, reducing heat exchange efficiency. Cleaning often employs methods such as high-pressure water washing, steam purging, or ultrasonic vibration, combined with specialized wall-climbing robots or manual entry into the equipment. Modern cleaning technology, combined with an online monitoring system, uses differential pressure sensors to determine the degree of ash accumulation, achieving precise cleaning. Efficient cleaning can restore the heat transfer performance of the air preheater, reduce flue gas temperature and fan energy consumption, and is a key maintenance measure to ensure economical boiler operation and extend equipment life. However, existing cleaning devices still have certain problems in use:

[0003] For example, the technical solution of the track-type air preheater cleaning device with application number 202023191664.0 is as follows: it includes a cleaner body, which includes a moving mechanism, an adjusting mechanism and a high-pressure water gun. The moving mechanism is located inside the cleaner body, and the adjusting mechanism is located on top of the moving mechanism. The adjusting mechanism includes a lifting plate, and the high-pressure water gun is located on top of the lifting plate. The cleaner body also includes a fixing bolt and a track frame. The fixing bolt is located on the surface of the lifting plate. However, traditional heat storage elements are large and heavy. Manual disassembly and assembly in the cleaning device is prone to uneven gaps due to positioning deviation, which affects the cleaning effect. Moreover, they are prone to tipping over when impacted by the high-pressure water gun during the cleaning process.

[0004] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.

[0005] To address the aforementioned issues, an innovative design was developed based on the existing cleaning device. Utility Model Content

[0006] The purpose of this invention is to provide a cleaning device for air preheater heat storage elements that is easy to disassemble and assemble, so as to solve the problems of inconvenient disassembly and assembly and insufficient stability of the cleaning process mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A cleaning device for air preheater heat storage elements that is easy to assemble and disassemble includes a device base. The device base has a wastewater tank inside. A support box is fixedly installed above the wastewater tank in the middle. Clamping frames are slidably connected in two sliding grooves on the left and right sides of the upper surface of the support box. Two slide rails are provided near the middle of the upper surface of the support box. The frame supporting the air preheater heat storage element is installed inside the slide rails. Top frames are provided on the upper left and right sides of the upper surface of the device base. Slide rods are fixedly installed on the front and rear sides of the bottom of the top frames. Crossbars are slidably connected to the outside of the slide rods. Several high-pressure water guns are provided on the side of the crossbars near the device base. The front side of the crossbars is connected to a water pipe.

[0009] Preferably, a first servo motor is provided on the upper right side of the device base, and a threaded rod is connected and installed on the left output end of the first servo motor. The left end of the threaded rod is rotatably connected to the left side of the support box, and the left and right sides of the threaded rod rotate in opposite directions.

[0010] Using the above technical solution, the first servo motor drives the threaded rod to rotate. By using the thread design with opposite left and right helical directions, the clamping frame moves synchronously towards the center or both sides, realizing the automatic clamping and loosening of the heat storage element. The disassembly and assembly time is shortened compared with the traditional manual method, and the positioning error is reduced.

[0011] Preferably, the outer sides of both the left and right sides of the threaded rod are threaded with clamping frames, and the clamping frames are in the shape of an "I".

[0012] The above technical solution uses an "I" shaped clamping frame that is threadedly connected to a threaded rod. The clamping surface is made of non-slip rubber. The heat storage element remains stable even when the clamping force reaches 50N. The displacement caused by the impact of high-pressure water gun during cleaning is reduced, thus solving the problem of instability in traditional manual clamping.

[0013] Preferably, a second servo motor is provided on both the left and right sides of the device base, and the second servo motor is vertically offset from the first servo motor, and a first bevel gear is connected and installed at the output end of the second servo motor.

[0014] Using the above technical solution, the second servo motor drives the first bevel gear to rotate, providing a mechanical power source for the reciprocating lifting and lowering movement of the high-pressure water gun.

[0015] Preferably, a second bevel gear is meshed above the first bevel gear, and a reciprocating screw is connected to the upper end of each of the second bevel gears. The upper end of the reciprocating screw is rotatably connected to the bottom of the top frame, and the cross frame is threaded to the outside of the reciprocating screw to form a reciprocating lifting structure.

[0016] Using the above technical solution, the rotation of the second bevel gear drives the reciprocating screw to rotate, causing the crossbar to move up and down along the slide bar. The cleaning coverage of the high-pressure water gun is increased to the full height of the heat storage element, and the cleaning efficiency is improved compared to spraying water at a fixed position.

[0017] Preferably, a drain pipe is provided on the rear side of the device base, and the drain pipe is connected to the inside of the sewage tank.

[0018] With the above technical solution, the drain pipe is connected to the sewage tank, and the sewage after cleaning can be discharged through the drain pipe to avoid sewage accumulation affecting the operation of the device.

[0019] Preferably, filter screens are fixedly installed on both the front and rear sides of the upper surface of the sewage tank, and the filter screens are located on the front and rear sides of the supporting box.

[0020] By adopting the above technical solution, the filter screen above the sewage tank intercepts the accumulated dust and particles that fall off during the cleaning process, preventing impurities from clogging the drain pipe, while reducing the accumulation of sediment in the sewage tank and extending the maintenance cycle.

[0021] Compared with the prior art, the beneficial effects of this utility model are: the air preheater heat storage element cleaning device is easy to disassemble and assemble.

[0022] Automated clamping: Two slide rails are provided on the upper surface of the support box near the middle, and the frame supporting the heat storage element of the air preheater is installed inside the slide rail. The first servo motor and the threaded rod drive the clamping frame to automatically position and clamp, which can adapt to heat storage elements of different sizes and reduce the error of clamping force uniformity.

[0023] High-efficiency integrated cleaning: The second servo motor is started, and the cross frame moves up and down through the rotation of the reciprocating screw. The high-pressure water gun sprays at a pressure of 10MPa, which improves the removal rate of dust accumulation in the gaps of the corrugated plate of the heat storage element and improves efficiency compared with the traditional fixed spraying method. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the overall rear structure of this utility model;

[0026] Figure 3 This is a front sectional view of the present invention.

[0027] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0028] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0029] In the diagram: 1. Device base; 2. Sewage tank; 3. Drain pipe; 4. Support box; 5. Slide rail; 6. First servo motor; 7. Threaded rod; 8. Clamping frame; 9. Slide rod; 10. Top frame; 11. Second servo motor; 12. First bevel gear; 13. Second bevel gear; 14. Reciprocating screw; 15. Cross frame; 16. High-pressure water gun; 17. Filter screen. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1

[0032] Please see Figure 1-4 This utility model provides a technical solution:

[0033] A cleaning device for air preheater heat storage elements that is easy to assemble and disassemble includes a device base 1. A sewage tank 2 is provided inside the device base 1. A support box 4 is fixedly installed above the middle of the sewage tank 2. A clamping frame 8 is slidably connected in two sliding grooves on the left and right sides of the upper surface of the support box 4. Two slide rails 5 are provided near the middle of the upper surface of the support box 4. A frame supporting the air preheater heat storage element is installed inside the slide rails 5. A top frame 10 is provided on the upper left and right sides of the upper surface of the device base 1. A slide rod 9 is fixedly installed on the front and rear sides of the bottom of the top frame 10. A cross frame 15 is slidably connected to the outside of the slide rod 9. Several high-pressure water guns 16 are provided on the side of the cross frame 15 near the device base 1. The front side of the cross frame 15 is connected to a water pipe.

[0034] A first servo motor 6 is installed on the upper right side of the device base 1, and a threaded rod 7 is connected to the output end of the first servo motor 6 on the left side. The left end of the threaded rod 7 is rotatably connected to the left side of the support box 4, and the left and right sides of the threaded rod 7 have opposite rotation directions. Clamping frames 8 are threadedly connected to the outer sides of both sides of the threaded rod 7, and the clamping frames 8 are in the shape of an "I". The first servo motor 6 drives the threaded rod 7 to rotate. By using the threaded design with opposite rotation directions, the clamping frames 8 move synchronously towards the center or both sides, realizing the automatic clamping and loosening of the heat storage element. The disassembly and assembly time is shortened compared with traditional manual methods, and the positioning error is reduced. The "I" shaped clamping frame 8 is threadedly connected to the threaded rod 7, and the clamping surface is made of anti-slip rubber material. The heat storage element remains stable even when the clamping force reaches 50N. The displacement caused by the impact of the high-pressure water gun 16 during cleaning is reduced, solving the problem of unstable clamping in traditional manual methods.

[0035] The device base 1 has a second servo motor 11 on both the left and right sides, and the second servo motor 11 is vertically offset from the first servo motor 6. The output end of the second servo motor 11 is connected to a first bevel gear 12, and a second bevel gear 13 is meshed above the first bevel gear 12. The upper end of the second bevel gear 13 is connected to a reciprocating screw 14, and the upper end of the reciprocating screw 14 is rotatably connected to the bottom of the top frame 10. The cross frame 15 is threaded to the outside of the reciprocating screw 14 to form a reciprocating lifting structure. The second servo motor 11 drives the first bevel gear 12 to rotate, providing a mechanical power source for the reciprocating lifting movement of the high-pressure water gun 16. The rotation of the second bevel gear 13 drives the reciprocating screw 14 to rotate, so that the cross frame 15 reciprocates up and down along the slide bar 9. The cleaning coverage of the high-pressure water gun 16 is increased to the full height of the heat storage element, and the cleaning efficiency is improved compared to spraying water at a fixed position.

[0036] A drain pipe 3 is provided on the rear side of the device base 1, and the drain pipe 3 is connected to the inside of the sewage tank 2. The sewage after cleaning can be discharged through the drain pipe 3 to avoid sewage accumulation affecting the operation of the device.

[0037] Example 2

[0038] Please see Figure 5 This utility model provides a technical solution:

[0039] Filter screens 17 are fixedly installed on the front and rear sides of the upper surface of the sewage tank 2, and the filter screens 17 are located on the front and rear sides of the support box 4. The filter screens 17 above the sewage tank 2 intercept the accumulated dust and particles that fall off during the cleaning process, prevent impurities from clogging the drain pipe 3, and reduce the accumulation of sediment in the sewage tank 2, thus extending the maintenance cycle.

[0040] Working principle:

[0041] When using this utility model, the overall frame of the heat storage element of the air preheater is placed on the slide rail 5 of the support box 4. The first servo motor 6 is started and the threaded rod 7 rotates, driving the left and right clamping frames 8 to move inward synchronously until the "I" shaped clamping surface is tightly attached to both sides of the element, thus completing the automatic clamping. When disassembling, the motor reverses, the clamping frame 8 is released, and the element can be easily taken out along the slide rail.

[0042] The second servo motor 11 is started to drive the first bevel gear 12 to rotate. The meshing second bevel gear 13 drives the reciprocating screw 14 to rotate. The cross frame 15 moves up and down along the slide bar 9. The high-pressure water gun 16 sprays high-pressure water to clean the components. The cleaning wastewater flows into the wastewater tank 2 and is discharged through the drain pipe 3. The moving speed of the clamping frame 8 is adjustable from 0.1 to 0.5 m / s by the speed control of the first servo motor 6. The lifting stroke of the cross frame 15 is set to a maximum stroke of 1.5 m by the lead of the reciprocating screw 14. It can be automatically adjusted according to the height of the heat storage element. The entire cleaning process can be started with one button by the PLC control system without manual intervention.

[0043] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A kind of air preheater regenerative element cleaning device of convenient disassembly, including device base (1), the sewage bin (2) is provided in the inside of device base (1), it is characterized by: A support box (4) is fixedly installed in the middle of the upper part of the sewage tank (2), and a clamping frame (8) is slidably connected in the two sliding grooves on the upper surface of the support box (4). Two slide rails (5) are provided in the middle of the upper surface of the support box (4), and a frame supporting the heat storage element of the air preheater is installed inside the slide rails (5). A top frame (10) is provided on the upper left and right sides of the upper surface of the device base (1), and a slide rod (9) is fixedly installed on the front and rear sides of the bottom of the top frame (10). A cross frame (15) is slidably connected to the outside of the slide rod (9), and several high-pressure water guns (16) are provided on the side of the cross frame (15) close to the device base (1), and the front side of the cross frame (15) is connected to a water pipe.

2. The air preheater heat storage element cleaning device that is easy to disassemble and assemble according to claim 1, characterized in that: The device base (1) is provided with a first servo motor (6) on the upper right side, and a threaded rod (7) is connected to the output end of the first servo motor (6). The left end of the threaded rod (7) is rotatably connected to the left side of the support box (4), and the left and right sides of the threaded rod (7) rotate in opposite directions.

3. The air preheater heat storage element cleaning device that is easy to disassemble and assemble according to claim 2, characterized in that: The threaded rod (7) has a clamping frame (8) threadedly connected to the outer sides of both sides, and the clamping frame (8) is in the shape of "I".

4. A cleaning device for easily disassembled air preheater heat storage elements according to claim 2, characterized in that: The device base (1) is provided with a second servo motor (11) on both the left and right sides, and the second servo motor (11) is vertically offset from the first servo motor (6), and the output end of the second servo motor (11) is connected to and installed with a first bevel gear (12).

5. A cleaning device for easily disassembled air preheater heat storage elements according to claim 4, characterized in that: The first bevel gear (12) is meshed with the second bevel gear (13), and the upper end of the second bevel gear (13) is connected to the reciprocating screw (14). The upper end of the reciprocating screw (14) is rotatably connected to the bottom of the top frame (10). The cross frame (15) is threaded to the outside of the reciprocating screw (14) to form a reciprocating lifting structure.

6. A cleaning device for easily disassembled air preheater heat storage elements according to claim 1, characterized in that: A drain pipe (3) is provided on the rear side of the device base (1), and the drain pipe (3) is connected to the inside of the sewage tank (2).

7. A cleaning device for easily disassembled air preheater heat storage elements according to claim 1, characterized in that: The wastewater tank (2) is fixedly equipped with filter screens (17) on both the front and back sides of its upper surface, and the filter screens (17) are located on the front and back sides of the supporting box (4).

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