Automatic ash cleaning device

Abstract

The application relates to the technical field of boiler cleaning equipment, and particularly discloses an automatic ash cleaning device, which comprises a brush head, a sliding rod, an electric telescopic component and a connecting shell, the connecting shell is arranged at one side of the brush head, the fixed end of the electric telescopic component is fixedly connected with the connecting shell, one end of the sliding rod is fixedly connected with the brush head, the other end of the sliding rod is hingedly connected with the telescopic end of the electric telescopic component, and the brush head is slidably connected with the connecting shell through the sliding rod. The automatic ash cleaning device is simple in structure and convenient to carry, can automatically clean the dust on the heat exchange fins in the boiler by hand, and avoids the dust from reducing the heat exchange efficiency.

Description

Technical Field

[0001] This invention relates to the field of boiler cleaning equipment technology, specifically an automatic ash removal device. Background Technology

[0002] A thermal power plant boiler refers to a medium-to-large-sized boiler in a power plant that supplies a specified quantity and quality of steam to the steam turbine. The main fuel in thermal power plant boilers is pulverized coal. After combustion, dust accumulates on the surface of the boiler's heating surfaces and in the gaps between them. Prolonged dust accumulation leads to deterioration of heat transfer and a decrease in boiler operating efficiency. For normal boiler operation, it is necessary to regularly clean the dust from the heating surfaces and gaps. Steam blowing or sonic blowing can conveniently clean the dust from the heating surfaces. However, due to the narrow gaps and compact arrangement of the heating surfaces, this method is not ideal for thoroughly cleaning the dust in the gaps. Therefore, to address these issues, a thermal power plant boiler ash removal device is proposed.

[0003] In the prior art, CN218599762U discloses a power plant ash removal device, including a base plate, a support plate fixedly connected to the top of the base plate, a rotating groove on the support plate, a lead screw rotatably connected in the rotating groove, a first motor fixedly connected to the top of the support plate, the output end of the first motor fixedly connected to the lead screw, a movable plate threaded onto the lead screw, a mounting plate fixedly connected to one end of the movable plate, a second motor fixedly connected to one side of the mounting plate, a telescopic device fixedly connected to the output shaft of the second motor, a swing plate fixedly connected to one end of the telescopic device, and a third motor fixedly connected to one side of the top of the swing plate. This type of technical solution or patent generally suffers from the following problems:

[0004] (1) It has the ability to clean the ash and slag on the surface of the boiler heating surface, but the device at some bend joints is not easy to penetrate into the interior of the heating surface and cannot be deeply cleaned.

[0005] (2) It is not equipped with a soft-bristle vacuum cleaner and does not have the ability to remove fine dust.

[0006] (3) It does not have an external negative pressure dust extraction device. The ash and slag removed still remain in the boiler flue and may still adhere to the downstream heating surface. Summary of the Invention

[0007] The purpose of this invention is to provide an automatic ash removal device that is simple in structure, easy to carry, and can automatically clean the dust on the heat exchange fins inside the boiler by hand, thus preventing the dust from reducing its heat exchange efficiency.

[0008] The objective of this invention can be achieved through the following technical solutions:

[0009] An automatic dust removal device includes a brush head, a sliding rod, an electric telescopic assembly, and a connecting shell. The connecting shell is disposed on one side of the brush head. The fixed end of the electric telescopic assembly is fixedly connected to the connecting shell. One end of the sliding rod is fixedly connected to the brush head, and the other end of the sliding rod is hinged to the telescopic end of the electric telescopic assembly. The brush head is slidably connected to the connecting shell through the sliding rod.

[0010] In a further embodiment, the electric telescopic assembly includes a motor, a turntable, and a connecting rod. The turntable is connected to the motor's shaft, one end of the connecting rod is hinged to an eccentric position on the turntable away from the motor, the motor housing serves as the fixed end of the electric telescopic assembly, and the other end of the connecting rod serves as the telescopic end of the electric telescopic assembly.

[0011] In a further embodiment, the motor is housed within the connecting housing.

[0012] In a further embodiment, the brush head includes a detachable housing and multiple bristles. The detachable housing has a cavity for creating negative pressure, and the cavity is connected to an air suction pipe. The multiple bristles are arranged at intervals on the housing, and air suction holes are opened on the housing between the bristles. The air suction holes are connected to the cavity, and the side of the detachable housing is connected to one end of the sliding rod.

[0013] In a further embodiment, the bristles are strip-shaped, and the upper parts of multiple bristles are interwoven.

[0014] In a further embodiment, the length of the bristles is less than or equal to the distance from the top of the bristles to the air intake hole; the bristles are inclined towards the outside of the detachable box.

[0015] In a further embodiment, the detachable box includes an upper box and a lower box, the upper box being slidably connected to the lower box and detachably connected to the lower box by bolts.

[0016] In a further embodiment, the upper and lower surfaces of the detachable box are provided with the bristles and air intake holes.

[0017] In a further embodiment, a sliding wear-resistant component is connected between the sliding rod and the connecting shell.

[0018] In a further embodiment, a handle is provided on the connecting shell.

[0019] The beneficial effects of this invention are:

[0020] This invention, through a connecting shell, an electric telescopic component, and a sliding rod, allows the brush head to automatically extend and retract, thereby quickly cleaning dust inside the boiler, such as dust on the heat exchange fins, ensuring the heat exchange efficiency of the heat exchange fins. The connecting shell design makes the entire device easy to carry.

[0021] This invention uses a turntable and a connecting rod to drive the sliding rod to reciprocate. The structure is simple, and various cleaning modes, such as fast or slow modes, can be output simply by controlling the motor speed. This allows the brush head to select the appropriate speed for slow cleaning of areas with heavy dust adhesion.

[0022] This invention creates suction holes between the brush bristles, connecting a cavity that forms a negative pressure and a suction pipe. This facilitates the connection of an external negative pressure suction device, drawing dust generated at the brush head into the device. This results in higher cleaning efficiency, a better cleaning environment, and prevents dust from falling onto the downstream heated surface. It also provides excellent cleaning of fine dust and strong deep cleaning capabilities.

[0023] The strip-shaped bristles interweave at the top, allowing the bristles to be longer. This prevents them from being sucked into the air intake due to negative pressure, which could cause blockage. The bristles are also stronger, allowing dust to be gathered between the strip-shaped bristles and then discharged through negative pressure. This makes them more effective at cleaning accumulated dust. In addition, the bristles can be made of nylon filaments, which have a certain degree of flexibility compared to steel, preventing damage to the functional components inside the boiler. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of an automatic dust removal device according to an embodiment of the present invention;

[0026] Figure 2 This is a connection diagram of the electric telescopic assembly in an embodiment of the present invention;

[0027] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the connection of the lower box body in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the connection of strip-shaped bristles in an embodiment of the present invention.

[0030] In the diagram: 1. Connecting shell; 2. End cap; 3. Handle; 4. Controller; 5. Motor; 6. Connecting rod; 7. Turntable; 8. Sliding wear-resistant part; 9. Sliding rod; 10. Connecting plate; 11. Suction pipe; 12. Lower box; 13. Upper box; 14. Suction hole; 15. Brush bristles; 16. Bolt; 100. Electric telescopic assembly; 200. Brush head; 300. Detachable box. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figure 1 As shown, an automatic dust removal device includes a brush head 200, a sliding rod 9, an electric telescopic assembly 100, and a connecting shell 1. The connecting shell 1 is disposed on one side of the brush head 200. The fixed end of the electric telescopic assembly 100 is fixedly connected to the connecting shell 1. One end of the sliding rod 9 is fixedly connected to the brush head 200, and the other end of the sliding rod 9 is hinged to the telescopic end of the electric telescopic assembly 100. The brush head 200 is slidably connected to the connecting shell 1 through the sliding rod 9.

[0033] Its working principle is that the telescopic end of the electric telescopic component 100 extends and retracts back and forth, driving the sliding rod 9 to slide inside the connecting shell 1, which in turn drives the brush head 200 to reciprocate, thereby achieving automatic back-and-forth cleaning of the boiler surface and improving cleaning efficiency. The design of the connecting shell 1 makes it easier to hold and carry, or to fix it in a certain place, such as fixing it to the boiler vent, so that the vent can be cleaned regularly to keep the gas inside the furnace flowing smoothly.

[0034] In some embodiments, the shape of the brush head 200 can be varied, such as being configured to match the shape of the boiler heat exchange fins or being flat to facilitate passage through some narrow gaps inside the boiler and to make reciprocating motion.

[0035] In some implementations, such as Figure 2As shown, the electric telescopic assembly 100 includes a motor 5, a turntable 7, and a connecting rod 6. The turntable 7 is connected to the rotating shaft of the motor 5. One end of the connecting rod 6 is hinged to an eccentric point on the turntable 7 away from the motor 5. The housing of the motor 5 serves as the fixed end of the electric telescopic assembly 100, and the other end of the connecting rod 6 serves as the telescopic end of the electric telescopic assembly 100. When the motor 5 is energized, the rotor of the motor 5 drives the turntable 7 to rotate, which in turn drives the connecting rod 6 at the eccentric point on the turntable 7 to rotate. The connecting rod 6 is hinged to the sliding rod 9, thereby causing the sliding rod 9 to slide within the connecting housing 1. This electric telescopic assembly 100 has a simple structure, can be made smaller in size, and is easy to carry. Compared with using a pneumatic reciprocating structure, it can save the arrangement of connecting parts such as pneumatic compressors. The structure of the electric telescopic assembly 100 can also adopt the principle of an electric cylinder, although that would be more expensive, but it should still be within the scope of disclosure or protection of this application. The telescopic end and the fixed end of the electric telescopic assembly 100 can generally be determined according to its specific structure. The fixed end is generally the housing end, and the telescopic end is generally the telescopic shaft end.

[0036] In some implementations, the motor 5 is housed inside the connecting housing 1. This prevents dust from damaging the motor 5 during cleaning.

[0037] In some implementations, refer to Figure 1 As shown, the brush head 200 includes a detachable housing 300 and multiple brush bristles 15. The detachable housing 300 has a cavity for creating negative pressure, and the cavity is connected to a suction pipe 11. The multiple brush bristles 15 are arranged at intervals on the housing, and suction holes 14 are opened on the housing between the brush bristles 15. The suction holes 14 are connected to the cavity. The side of the detachable housing 300 is connected to one end of the sliding rod 9. The detachable housing 300 facilitates cleaning the dust inside the brush head 200. The cavity for creating negative pressure allows for easy connection to external negative pressure equipment such as a vacuum cleaner through a pipe, so that the cleaned dust can be quickly sucked out into the external negative pressure equipment, improving the environment during furnace cleaning.

[0038] In some implementations, such as Figure 5 As shown, the bristles 15 are strip-shaped, and the upper parts of multiple bristles 15 are interwoven. This increases the adhesion of the upper part of the bristles 15, increases their connection strength, and prevents them from being sucked into the suction hole 14 by negative pressure and clogging the suction hole 14, thus preventing incomplete dust removal. In addition, the interwoven structure increases the strength of the upper part of the bristles 15, which is more effective for cleaning areas with thick dust accumulation in the furnace. It also ensures that the direction of the bristles 15 swings is consistent during cleaning, resulting in a large dust coverage area and reducing dust emissions. It is particularly suitable for double-sided cleaning of heat exchange fins.

[0039] In some implementations, the length of the bristles 15 is less than or equal to the distance from the top of the bristles 15 to the air intake 14; the bristles 15 are tilted to the side outside the removable housing 300. This ensures that the bristles 15 will not block the air intake 14 due to negative pressure. Although this cleaning efficiency is lower, it should still be covered within the scope of disclosure or protection in this application.

[0040] In some implementations, refer to Figure 1 As shown, the detachable housing 300 includes, for example: Figure 3 The upper box 13 and lower box 12 are shown. The upper box 13 is slidably connected to the lower box 12, and the upper box 13 is detachably connected to the lower box 12 by bolts 16, which are used to lock the upper box 13 and the lower box 12 together. This facilitates the manufacture of the detachable box 300 and the cleaning of dust inside the detachable box 300. The bolts 16 can be countersunk bolts to prevent scratching the functional components inside the furnace.

[0041] In some implementations, refer to Figure 1 As shown, the detachable housing 300 is provided with bristles 15 and air intake holes 14, as... Figure 4 The lower surface is also provided with bristles 15 and air intake holes 14. (See reference...) Figure 1 and Figure 4 As shown, the double-sided bristles 15 and air intake holes 14 are suitable for simultaneously cleaning the heat dissipation fins on both sides of the gap. If needed, the bristles 15 can also be circumferentially arranged on the surface of the removable housing 300.

[0042] In some embodiments, see Figure 2 As shown, a sliding wear-resistant component 8 connects the sliding rod 9 to the connecting shell 1. Wear-resistant sliding components, such as smooth-backed bushings or wear-resistant coatings, can increase the number of sliding cycles between the sliding rod 9 and the connecting shell 1, thereby improving service life.

[0043] In some implementations, a handle 3 is provided on the connecting shell 1. The handle 3 facilitates the hand-held entry of the entire device into the boiler.

[0044] In some embodiments, an end cap 2 is fixedly connected to the top of the connecting shell 1, and a controller 4 and a handle 3 are fixedly connected to the top of the end cap 2. The handle 3 facilitates the operation of the device.

[0045] In some implementations, such as Figure 1 As shown, the bristles 15 are made of nylon or stiffer cotton. The nylon or cotton bristles 15 are elastic, which reduces damage to the fins when the bristles 15 clean the dust in the gaps between the fins inside the boiler.

[0046] In some embodiments, a connecting plate 10 is provided at one end of the lower box 12 to strengthen the connection between the lower box 12 and the sliding rod 9.

[0047] The specific workflow can be as follows: When it is necessary to clean the dust in the gaps between the heater fins inside the boiler, refer to... Figure 1 As shown, by holding the device with handle 3, and simultaneously adjusting the positions of the lower box 12 and upper box 13 according to the gap between adjacent heater fins, the lower box 12, upper box 13, and brush 15 can be inserted into the gap between adjacent heater fins, allowing the upper box 13 to move along the lower box 12 until the upper box 13 moves to the appropriate position. (See reference...) Figure 3 As shown, bolts 16 are then used to limit and fix the lower box 12 and the upper box 13. (See reference...) Figure 1 As shown, the suction pipe 11 is simultaneously connected to an external vacuum cleaner. Then, the operator inserts the lower housing 12, upper housing 13, and brush bristles 15 into the gaps between adjacent heater fins. (See attached image.) Figure 2 As shown, the controller 4 then controls the motor 5 to rotate the turntable 7 inside the connecting shell 1. As the turntable 7 reciprocates, the connecting rod 6 also moves the sliding rod 9 along the sliding wear-resistant part 8. Simultaneously, the sliding rod 9 also moves along the connecting shell 1 as shown in the diagram. Figure 1 The connecting plate 10, along with the lower box 12, upper box 13, and brush 15, moves between adjacent heater fins. The brush 15 scrapes away dust between the heater fins, while an external vacuum cleaner sucks away the dust swept off by the brush 15 through the suction pipe 11 and suction port 14, ensuring that the working environment of the staff is not affected by dust. At the same time, it can also suck away the dust inside the heater fins.

[0048] In summary, the present invention has the following other advantages:

[0049] (1) Improved cleaning efficiency: The present invention uses a flattened lower box 12 and upper box 13 design to facilitate cleaning in narrow gaps of the heated surface, thereby improving cleaning efficiency.

[0050] (2) Enhanced cleaning effect: The combination of brush bristles 15 and air suction hole 14 can effectively remove and suck away dust in the gaps, ensuring the cleaning effect.

[0051] (3) Reduce manual operation: The brush 15 is driven by motor 5 to clean, realizing automated cleaning, reducing manual operation and reducing labor intensity.

[0052] (4) High adaptability: The lower box 12 and the upper box 13 are adjustable in height, which can adapt to the gaps of heating surface tube bundles or fins of different widths, thus improving the applicability of the device.

[0053] In summary, this invention provides a simple, easy-to-use, economical, and efficient boiler ash removal device. It not only solves the key problems of incomplete cleaning of gaps and corners during boiler ash removal and secondary adhesion of dust to heating surfaces, but also plays a positive role in improving boiler heat exchange efficiency and reducing heat loss. This device is highly adaptable and can also be applied to ash removal in other equipment.

[0054] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An automatic dust removal device, characterized in that, The device includes a brush head (200), a sliding rod (9), an electric telescopic assembly (100), and a connecting shell (1). The connecting shell (1) is disposed on one side of the brush head (200). The fixed end of the electric telescopic assembly (100) is fixedly connected to the connecting shell (1). One end of the sliding rod (9) is fixedly connected to the brush head (200), and the other end of the sliding rod (9) is hinged to the telescopic end of the electric telescopic assembly (100). The brush head (200) is slidably connected to the connecting shell (1) through the sliding rod (9).

2. The automatic dust removal device according to claim 1, characterized in that, The electric telescopic assembly (100) includes a motor (5), a turntable (7) and a connecting rod (6). The turntable (7) is connected to the rotating shaft of the motor (5). One end of the connecting rod (6) is hinged to the eccentric end of the turntable (7) away from the motor (5). The housing of the motor (5) is the fixed end of the electric telescopic assembly (100), and the other end of the connecting rod (6) is the telescopic end of the electric telescopic assembly (100).

3. The automatic dust removal device according to claim 2, characterized in that, The motor (5) is disposed inside the connecting housing (1).

4. The automatic dust removal device according to claim 1, characterized in that, The brush head (200) includes a detachable housing (300) and a plurality of bristles (15). The detachable housing (300) has a cavity for forming a negative pressure. The cavity is connected to an air suction pipe (11). The plurality of bristles (15) are arranged at intervals on the housing. An air suction hole (14) is provided on the housing between the bristles (15). The air suction hole (14) is connected to the cavity. The side of the detachable housing (300) is connected to one end of the sliding rod (9).

5. An automatic dust removal device according to claim 4, characterized in that, The bristles (15) are strip-shaped, and the upper parts of multiple bristles (15) are interwoven with each other.

6. An automatic dust removal device according to claim 4, characterized in that, The length of the bristles (15) is less than or equal to the distance from the top of the bristles (15) to the air intake (14); the bristles (15) are inclined to the outside of the detachable housing (300).

7. An automatic dust removal device according to claim 4, characterized in that, The detachable box (300) includes an upper box (13) and a lower box (12). The upper box (13) is slidably connected to the lower box (12), and the upper box (13) is detachably connected to the lower box (12) by bolts (16).

8. An automatic dust removal device according to claim 4, characterized in that, The upper and lower surfaces of the detachable box (300) are provided with the brush bristles (15) and air intake holes (14).

9. An automatic dust removal device according to claim 1, characterized in that, A sliding wear-resistant component (8) is connected between the sliding rod (9) and the connecting shell (1).

10. An automatic dust removal device according to any one of claims 1-9, characterized in that, A handle (3) is provided on the connecting shell (1).

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