Inner wall ash removal device for industrial furnace tube body

Abstract

The invention relates to the technical field of ash removal devices, and discloses an inner wall ash removal device for an industrial furnace tube body. The walking mechanism is arranged on the main body frame; the cleaning mechanism is arranged on the main body frame; the recycling mechanism is arranged on the main body frame; the walking mechanism is used for moving on the inner walls of industrial furnace tube bodies with different diameters, the cleaning mechanism is used for cleaning the inner walls of the industrial furnace tube bodies, and the recycling mechanism is used for recycling cleaned scrap waste water. According to the inner wall ash removal device for the industrial furnace tube body, the cleaning mechanism is arranged, through elastic telescopic cooperation of a hollow movable strip and a return spring, the inner wall ash removal device can adapt to the inner walls of industrial furnace tubes with different inner diameters, and cooperative cleaning of mechanical scraping and hydraulic flushing is achieved by combining rotary scraping driven by a power motor and directional flushing of high-pressure water flow; and the cleaning efficiency and the covering uniformity of dust and scraps on the inner wall of the furnace tube are obviously improved.

Description

Technical Field

[0001] The invention relates to the technical field of dust cleaning devices, in particular to a dust cleaning device for the inner wall of an industrial furnace tube. Background Art

[0002] Industrial furnace tubes are core components of industrial heating equipment, primarily used to transfer heat or carry high-temperature media. Mostly made of stainless steel, they are suitable for heating and sintering small workpieces and samples. They typically operate by placing a quartz or high-temperature furnace tube inside the furnace chamber for heating. Workpieces are placed in the heating and constant-temperature zones. Sealing flanges are used at both ends of the tube furnace to enable pre-evacuation and the introduction of protective, oxidizing, or reducing gases.

[0003] Industrial furnace tubes are common material conveying or reaction vessels in industrial production. The cleanliness of their inner walls is directly related to the material conveying efficiency, the purity of the reaction products and the stability of equipment operation. It is a key link in ensuring production efficiency and product quality. However, when furnace tubes operate in a long-term high-temperature, high-pressure or chemically corrosive environment, the inner walls will gradually adhere to hard ash scale, sticky oil stains or chemical deposition pollutants formed by high-temperature sintering. These pollutants are tightly bonded to the tube wall and have strong adhesion. Since furnace tubes are mostly long straight cylindrical structures with narrow internal space and large depth, manual cleaning requires operators to carry tools and go deep into the furnace tubes. Not only is the operating space limited, making cleaning difficult, but the high temperature residual heat or incompletely reacted chemicals remaining in the furnace tubes pose a threat to the operator's health. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the prior art, the present invention provides a device for cleaning the inner wall of an industrial furnace tube body, which solves the problem that the inner wall of a traditional industrial furnace tube is difficult to clean.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for cleaning the inner wall of an industrial furnace pipe, comprising: a main frame; a walking mechanism, the walking mechanism being arranged on the main frame; a cleaning mechanism, the cleaning mechanism being arranged on the main frame; a recycling mechanism, the recycling mechanism being arranged on the main frame; the walking mechanism being used to move on the inner wall of an industrial furnace pipe of different diameters, the cleaning mechanism being used to clean the inner wall of the industrial furnace pipe, and the recycling mechanism being used to recycle the cleaned debris and wastewater; the cleaning mechanism comprising a connecting block, the connecting block being fixedly connected to the main frame, and the inner wall of the connecting block being fixedly connected to the main frame. A high-pressure input pipe is fixedly connected, and a hollow connecting frame is rotatably connected to the connecting block. A number of hollow connecting sleeves are arranged in a circular array on the hollow connecting frame. The piston on the inner wall of the hollow connecting sleeve is connected to a hollow movable bar. A return spring is arranged between the hollow movable bar and the hollow connecting sleeve. The inner walls of the hollow connecting frame, the hollow connecting sleeve and the hollow movable bar are connected. An output hole is provided on the hollow movable bar. A power motor is fixedly connected to the connecting block, and the output shaft of the power motor is fixedly connected to a power gear. The outer wall of the hollow connecting frame is fixedly connected to a gear ring, and the gear ring is meshed with the power gear.

[0008] Preferably, the walking mechanism includes a mounting plate, the mounting plate is fixedly connected to the main frame, the inner wall of the mounting plate is fixedly connected to a driving motor, the output shaft of the driving motor is connected to a threaded rod, the threaded rod is rotatably connected to the inner wall of the mounting plate, the threaded rod is threadedly connected to a movable block, the movable block is slidably connected to the inner wall of the mounting plate, a movable frame is provided on the movable block, one end of the movable frame is hinged to the movable block, the other end of the movable frame is hinged to a positioning frame, one end of the positioning frame is hinged to the mounting plate, the other end of the positioning frame is rotatably connected to an electric driving wheel, and the circumferential array of the walking mechanism is arranged on the main frame.

[0009] Preferably, a sealing structure is provided between the hollow connecting frame and the connecting block, one end of the return spring is fixedly connected to the hollow movable bar, and the other end of the return spring is fixedly connected to the hollow connecting sleeve.

[0010] Preferably, the recovery mechanism includes a negative pressure cavity, which is fixedly connected to the outer wall of the main frame, a negative pressure connecting pipe is fixedly connected to the inner wall of the negative pressure cavity, and a circumferential array of surrounding holes is opened on the outer wall of the negative pressure cavity.

[0011] Preferably, the driving motor is a servo motor, and the threaded rod adopts a trapezoidal thread.

[0012] Preferably, a T-shaped slot is provided on the inner wall of the mounting plate along the axial direction of the threaded rod, and a sliding block matching the T-shaped slot is provided at the bottom of the movable block.

[0013] Preferably, the outer surface of the electric drive wheel is wrapped with a rubber anti-slip layer, and the mounting plate is fixedly connected to the main frame by bolts.

[0014] Preferably, the power motor is a variable frequency motor, and the cleaning mechanism is powered by an external cable.

[0015] Preferably, the walking mechanism, cleaning mechanism and recovery mechanism are arranged in sequence along the axial direction of the main frame, with the walking mechanism located at the top and the bottom, the cleaning mechanism located in the middle, and the recovery mechanism located at the bottom.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the present invention provides a device for cleaning the inner wall of an industrial furnace tube body, which has the following beneficial effects:

[0018] 1. This inner wall cleaning device for industrial furnace tubes utilizes a cleaning mechanism. Through the elastic expansion and contraction of a hollow movable bar and a return spring, it can adapt to the inner walls of industrial furnace tubes with different inner diameters. Combining the rotary scraping driven by a power motor with the directional flushing of a high-pressure water flow, it achieves the coordinated cleaning of mechanical scraping and hydraulic flushing, significantly improving the efficiency of removing dust and debris from the inner wall of the furnace tube and the uniformity of coverage.

[0019] 2. The inner wall cleaning device for industrial furnace tubes utilizes a walking mechanism. Through the linkage adjustment of the drive motor, threaded rod and movable frame, it can synchronously control the radial extension and contraction of multiple sets of electric drive wheels, accurately adapting to the inner diameter of furnace tubes in different ranges, ensuring that the electric drive wheels fit tightly against the inner wall, and realizing stable movement of the cleaning device in the furnace tube, avoiding offset or jamming problems caused by changes in tube diameter.

[0020] 3. The inner wall cleaning device for industrial furnace tubes utilizes a recovery mechanism. Through the circumferential array surrounding hole design of the negative pressure cavity and the low-pressure environment formed by the negative pressure connecting pipe, it can absorb cleaned debris and wastewater in multiple directions, covering the inner wall of the furnace tube without dead corners, effectively avoiding secondary pollution caused by debris residue or wastewater dripping, and ensuring the environmental friendliness and thoroughness of the cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the mounting plate of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the walking mechanism of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the connecting block of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the cross section of the hollow connection frame of the present invention;

[0026] Figure 6 Schematic diagram of the cross-section of the hollow movable strip of the present invention;

[0027] Figure 7 Schematic diagram of the structure of the negative pressure cavity of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the cross section of the negative pressure cavity of the present invention.

[0029] In the figure: 1. Main frame; 2. Traveling mechanism; 21. Mounting plate; 22. Drive motor; 23. Threaded rod; 24. Movable block; 25. Movable frame; 26. Positioning frame; 27. Electric drive wheel; 3. Cleaning mechanism; 31. Connecting block; 32. High-pressure input pipe; 33. Hollow connecting frame; 34. Hollow connecting sleeve; 35. Hollow movable bar; 36. Return spring; 37. Output hole; 38. Power motor; 39. Power gear; 310. Ring gear; 4. Recovery mechanism; 41. Negative pressure cavity; 42. Negative pressure connecting pipe; 43. Surrounding hole. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figures 1-8, a device for cleaning the inner wall of an industrial furnace tube body, comprising: a main frame 1; a walking mechanism 2, the walking mechanism 2 is arranged on the main frame 1; a cleaning mechanism 3, the cleaning mechanism 3 is arranged on the main frame 1; a recycling mechanism 4, the recycling mechanism 4 is arranged on the main frame 1; the walking mechanism 2 is used to move on the inner wall of the industrial furnace tube body of different diameters, the cleaning mechanism 3 is used to clean the inner wall of the industrial furnace tube body, and the recycling mechanism 4 is used to recycle the cleaned debris and wastewater; the cleaning mechanism 3 includes a connecting block 31, the connecting block 31 is fixedly connected to the main frame 1, a high-pressure input pipe 32 is fixedly connected to the inner wall of the connecting block 31, a hollow connecting frame 33 is rotatably connected to the connecting block 31, and a hollow connecting A plurality of hollow connecting sleeves 34 are arranged in a circular array on the circumference of the frame 33. A hollow movable bar 35 is connected to the piston on the inner wall of the hollow connecting sleeve 34. A return spring 36 is provided between the hollow movable bar 35 and the hollow connecting sleeve 34. The inner walls of the hollow connecting frame 33, the hollow connecting sleeve 34, and the hollow movable bar 35 are connected. An output hole 37 is provided in the hollow movable bar 35. A power motor 38 is fixedly connected to the connecting block 31. The output shaft of the power motor 38 is fixedly connected to a power gear 39. A ring gear 310 is fixedly connected to the outer wall of the hollow connecting frame 33. The ring gear 310 meshes with the power gear 39. When the power motor 38 is started, its output shaft drives the power gear 39 to rotate synchronously. Since the power gear 39 meshes with the ring gear 310 on the outer wall of the hollow connecting frame 33, the rotation of the power gear 39 drives the ring gear 310 to rotate, thereby driving the entire hollow connecting frame 33 to rotate around the connecting block 31. The hollow connecting sleeves 34 and the hollow movable bars 35 connected by pistons, which are arranged in a circular array on the hollow connecting frame 33, rotate synchronously with the hollow connecting frame 33, forming a circular cleaning action around the inner wall of the furnace tube. The hollow movable bars 35 and the hollow connecting sleeves 34 are connected by pistons, and a return spring 36 is provided between the two. When the cleaning mechanism 3 enters the furnace tube along with the main frame 1: if the inner diameter of the furnace tube is small, the hollow movable bars 35 will be squeezed by the inner wall of the furnace tube, shrinking into the hollow connecting sleeve 34 and compressing the return spring 36; if the inner diameter of the furnace tube is large, the elastic force of the return spring 36 will push the hollow movable bars 35 outward, so that it always maintains contact with the inner wall of the furnace tube; through this elastic expansion and contraction mechanism, the cleaning mechanism 3 can adapt to the inner wall of the furnace tube of different diameters, ensuring that the cleaning components are tightly fitted to the inner wall. One end of the high-pressure input pipe 32 is connected to an external high-pressure water source, and the other end is connected to the inner wall of the hollow connecting frame 33. The high-pressure water flow path is: high-pressure inlet pipe 32 → inner wall of hollow connecting frame 33 → inner wall of hollow connecting sleeve 34 → inner wall of hollow movable bar 35 → output hole 37. After being ejected from output hole 37, the high-pressure water flow directly acts on the inner wall of the furnace tube. Combined with the rotation and scraping of hollow movable bar 35, it can effectively remove contaminants such as dust, debris, etc. attached to the inner wall.

[0032] The walking mechanism 2 includes a mounting plate 21, which is fixedly connected to the main frame 1. A driving motor 22 is fixedly connected to the inner wall of the mounting plate 21. The output shaft of the driving motor 22 is connected to a threaded rod 23. The threaded rod 23 is rotatably connected to the inner wall of the mounting plate 21. A movable block 24 is threadedly connected to the threaded rod 23. The movable block 24 is slidably connected to the inner wall of the mounting plate 21. A movable frame 25 is provided on the movable block 24. One end of the movable frame 25 is hinged to the movable block 24, and the other end of the movable frame 25 is hinged to a positioning frame 26. One end of the positioning frame 26 is hinged to the mounting plate 21, and the other end of the positioning frame 26 is rotatably connected to an electric driving wheel 27. The walking mechanism 2 is arranged in a circular array on the main frame 1. After the driving motor 22 is started, its output shaft directly drives the threaded rod 23 to rotate synchronously. Since the threaded rod 23 and the movable block 24 are threadedly connected, and the movable block 24 is constrained by the sliding of the inner wall of the mounting plate 21, the movable block 24 can only move axially along the threaded rod 23. Therefore, the rotational motion of the threaded rod 23 is converted into a linear sliding motion of the movable block 24 along the axial direction of the threaded rod 23. The linear sliding motion of the movable block 24 is transmitted to the positioning frame 26 through the movable frame 25. One end of the movable frame 25 is hinged to the movable block 24, and the other end is hinged to the positioning frame 26. The positioning frame 26 is hinged to the mounting plate 21. When the movable block 24 slides in a certain direction, the movable frame 25 will drive The positioning frame 26 rotates around the hinge point, thereby changing the distance between the electric drive wheel 27 at the other end of the positioning frame 26 and the mounting plate 21. Since the walking mechanism 2 is distributed in a circular array on the main frame 1, the sliding direction of the movable block 24 is controlled by the forward and reverse rotation of the drive motor 22, and the electric drive wheels 27 on all the positioning frames 26 can be synchronously adjusted to move closer to or away from the inner wall of the furnace tube, and finally the electric drive wheels 27 are tightly fitted with the inner wall of the furnace tube, and can adapt to furnace tubes with different inner diameters. At this time, the electric drive wheel 27 is started to drive the main frame 1 to move stably up and down along the inner wall of the furnace tube.

[0033] A sealing structure is provided between the hollow connecting frame 33 and the connecting block 31. The high-pressure water flow of the cleaning mechanism 3 needs to be transported to the inner wall of the furnace tube through the path of "high-pressure input pipe 32 → hollow connecting frame 33 → hollow connecting sleeve 34 → hollow movable bar 35 → output hole 37". If there is no sealing structure at the connection between the hollow connecting frame 33 and the connecting block 31, high-pressure water will leak from the gap, causing the water pressure to drop and the flushing force of the output hole 37 to weaken, affecting the cleaning efficiency; therefore, the sealing structure blocks the water leakage path to ensure that all high-pressure water acts on the inner wall of the furnace tube through the output hole 37, which is the core design for maintaining the cleaning function. One end of the return spring 36 is fixedly connected to the hollow movable bar 35, and the other end of the return spring 36 is fixedly connected to the hollow connecting sleeve 34. When the inner diameter of the furnace tube is small, the hollow movable bar 35 is squeezed into the hollow connecting sleeve 34 by the inner wall, and the return spring 36 is compressed. When the inner diameter of the furnace tube increases, the spring needs to use its own elastic force to push the hollow movable bar 35 outward to maintain contact with the inner wall.

[0034] The recovery mechanism 4 includes a negative pressure cavity 41, which is fixedly connected to the outer wall of the main frame 1. A negative pressure connecting pipe 42 is fixedly connected to the inner wall of the negative pressure cavity 41. A circular array of surrounding holes 43 is provided on the outer wall of the negative pressure cavity 41. Since the negative pressure cavity 41 continuously extracts internal gas through the negative pressure connecting pipe 42, its internal air pressure will be significantly lower than the ambient air pressure in the clean area of ​​the inner wall of the furnace tube, that is, "high pressure outside and low pressure inside". According to the principles of fluid mechanics, a mixed fluid of gas or debris wastewater will flow from a high-pressure area to a low-pressure area, thereby generating an inhalation airflow into the cavity at the surrounding holes 43. The surrounding holes 43 on the outer wall of the negative pressure cavity 41 are distributed in a circular array, that is, multiple holes are evenly opened along the circumference of the cavity. This design directly determines the collection efficiency and coverage range of the recovery mechanism 4: no dead angle coverage: the furnace tube is a cylindrical structure. When the cleaning mechanism 3 rotates for cleaning, the debris wastewater is dispersed at various radial positions on the inner wall of the furnace tube. The surrounding holes 43 in the circular array can synchronously cover all radial directions to ensure that the debris wastewater can be inhaled no matter where it is located on the inner wall of the furnace tube. Efficient collection: Multiple surrounding holes 43 generate suction airflow at the same time, which increases the contact area with debris and wastewater, avoiding omission problems caused by insufficient suction of a single channel. After the cleaning mechanism 3 removes the dust and dirt on the inner wall of the furnace tube through high-pressure flushing and mechanical scraping, the external negative pressure equipment continuously extracts the gas in the negative pressure cavity 41 through the negative pressure connecting pipe 42 to maintain its internal low pressure state; the debris and wastewater in the furnace tube are sucked into the negative pressure cavity 41 from the surrounding holes 43 along with the airflow; and then output through the negative pressure connecting pipe 42.

[0035] The driving motor 22 is a servo motor, which controls the rotation accuracy of the threaded rod 23 through encoder feedback to achieve millimeter-level adjustment of the moving distance of the movable block 24. The threaded rod 23 adopts a trapezoidal thread, and the thread lead angle is less than the equivalent friction angle to achieve a self-locking function to prevent the movable block 24 from accidentally sliding due to the vibration of the furnace tube. The inner wall of the mounting plate 21 is provided with a T-shaped groove along the axial direction of the threaded rod 23, and a slider matching the T-shaped groove is provided at the bottom of the movable block 24. The movement direction of the movable block 24 is limited by the sliding cooperation between the slider and the groove. The outer surface of the electric drive wheel 27 is wrapped with a rubber anti-slip layer to increase the friction with the inner wall of the furnace tube and To reduce movement noise, the mounting plate 21 is fixedly connected to the main frame 1 by bolts, and a shock-absorbing gasket is arranged between the mounting plate 21 and the main frame 1. The power motor 38 is a variable frequency motor, and the output speed is adjusted by the frequency converter. The cleaning mechanism 3 is powered by an external cable, and the cable is connected to the main frame 1 through a drag chain. The length of the drag chain can be freely extended or retracted with the moving distance of the cleaning device. The walking mechanism 2, the cleaning mechanism 3, and the recovery mechanism 4 are arranged in sequence along the axial direction of the main frame 1, with the walking mechanism 2 located at the top and the bottom, the cleaning mechanism 3 located in the middle, and the recovery mechanism 4 located at the bottom, forming a functional sequence of "moving-cleaning-recovery".

[0036] In summary, in the inner wall cleaning device for industrial furnace tubes, after the driving motor 22 is started, its output shaft directly drives the threaded rod 23 to rotate synchronously. Since the threaded rod 23 is threadedly connected to the movable block 24, and the movable block 24 is constrained by the sliding of the inner wall of the mounting plate 21, the movable block 24 can only move axially along the threaded rod 23. Therefore, the rotational motion of the threaded rod 23 is converted into a linear sliding motion of the movable block 24 along the axial direction of the threaded rod 23. The linear sliding motion of the movable block 24 is transmitted to the positioning frame 26 through the movable frame 25. One end of the movable frame 25 is hinged to the movable block 24, and the other end is hinged to the positioning frame 26. The positioning frame 26 is hinged to the mounting plate 21. When the movable block 24 slides in a certain direction, the movable frame 25 will drive The positioning frame 26 rotates around the hinge point, thereby changing the distance between the electric drive wheel 27 at the other end of the positioning frame 26 and the mounting plate 21. Since the walking mechanism 2 is distributed in a circular array on the main frame 1, the sliding direction of the movable block 24 is controlled by the forward and reverse rotation of the drive motor 22, and the electric drive wheels 27 on all the positioning frames 26 can be synchronously adjusted to move closer to or away from the inner wall of the furnace tube, and finally the electric drive wheels 27 are tightly fitted with the inner wall of the furnace tube, and can adapt to furnace tubes with different inner diameters. At this time, the electric drive wheel 27 is started to drive the main frame 1 to move stably up and down along the inner wall of the furnace tube.

[0037] After the power motor 38 is started, its output shaft drives the power gear 39 to rotate synchronously. Because the power gear 39 meshes with the ring gear 310 on the outer wall of the hollow connecting frame 33, the rotation of the power gear 39 drives the ring gear 310 to rotate, which in turn drives the entire hollow connecting frame 33 to rotate around the connecting block 31. Multiple hollow connecting sleeves 34 arranged in a circular array on the hollow connecting frame 33 and the hollow movable bar 35 connected by a piston rotate synchronously with the hollow connecting frame 33, forming a circular cleaning action around the inner wall of the furnace tube. The hollow movable bar 35 is connected to the hollow connecting sleeve 34 by a piston, and a return spring 36 is interposed between them. When cleaning mechanism 3 enters the furnace tube along with main frame 1, if the furnace tube's inner diameter is small, hollow movable bar 35 is squeezed by the tube's inner wall, contracting into hollow connecting sleeve 34 and compressing return spring 36. If the tube's inner diameter is large, the elastic force of return spring 36 pushes hollow movable bar 35 outward, ensuring it maintains contact with the tube's inner wall. Through this elastic and retractable mechanism, cleaning mechanism 3 can adapt to tubes of varying diameters, ensuring a tight fit between the cleaning components and the inner wall. One end of high-pressure inlet pipe 32 is connected to an external high-pressure water source, while the other end communicates with the inner wall of hollow connecting frame 33. The high-pressure water flows along the following path: high-pressure inlet pipe 32 → inner wall of hollow connecting frame 33 → inner wall of hollow connecting sleeve 34 → inner wall of hollow movable bar 35 → outlet port 37. After being ejected from outlet port 37, the high-pressure water directly impacts the tube's inner wall, where it, combined with the rotating scraping action of hollow movable bar 35, effectively removes contaminants such as dirt and debris adhering to the inner wall.

[0038] Since the negative pressure cavity 41 continuously extracts internal gas through the negative pressure connecting pipe 42, its internal air pressure will be significantly lower than the ambient air pressure of the clean area on the inner wall of the furnace tube, that is, "high pressure outside, low pressure inside". According to the principles of fluid mechanics, gas or a mixed fluid containing debris wastewater will flow from the high-pressure area to the low-pressure area, thereby generating an inhaled airflow into the cavity at the surrounding hole 43. The surrounding holes 43 on the outer wall of the negative pressure cavity 41 are distributed in a circular array, that is, multiple holes are evenly opened along the circumference of the cavity. This design directly determines the collection efficiency and coverage range of the recovery mechanism 4: no dead angle coverage: the furnace tube is a cylindrical structure. When the cleaning mechanism 3 rotates for cleaning, the debris wastewater is dispersed at various radial positions on the inner wall of the furnace tube. The surrounding holes 43 in the circular array can synchronously cover all radial directions to ensure that the debris wastewater can be inhaled no matter where it is on the inner wall of the furnace tube. Efficient collection: Multiple surrounding holes 43 generate suction airflow at the same time, which increases the contact area with debris and wastewater, avoiding omission problems caused by insufficient suction of a single channel. After the cleaning mechanism 3 removes the dust and dirt on the inner wall of the furnace tube through high-pressure flushing and mechanical scraping, the external negative pressure equipment continuously extracts the gas in the negative pressure cavity 41 through the negative pressure connecting pipe 42 to maintain its internal low pressure state; the debris and wastewater in the furnace tube are sucked into the negative pressure cavity 41 from the surrounding holes 43 along with the airflow; and then output through the negative pressure connecting pipe 42.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A device for cleaning the inner wall of an industrial furnace tube, characterized in that: include: Main frame (1); A walking mechanism (2), wherein the walking mechanism (2) is arranged on the main frame (1); A cleaning mechanism (3), wherein the cleaning mechanism (3) is arranged on the main frame (1); A recovery mechanism (4), wherein the recovery mechanism (4) is arranged on the main frame (1); The walking mechanism (2) is used to move on the inner wall of the industrial furnace tube with different diameters, the cleaning mechanism (3) is used to clean the inner wall of the industrial furnace tube, and the recycling mechanism (4) is used to recycle the cleaned debris wastewater; The cleaning mechanism (3) comprises a connecting block (31) which is fixedly connected to the main frame (1); a high-pressure input pipe (32) is fixedly connected to the inner wall of the connecting block (31); a hollow connecting frame (33) is rotatably connected to the connecting block (31); a plurality of hollow connecting sleeves (34) are arranged in a circumferential array on the hollow connecting frame (33); a hollow movable bar (35) is connected to the inner wall of the hollow connecting sleeve (34) by a piston; the hollow movable bar (35) and the hollow connecting sleeve (34) are connected to each other. ), a return spring (36) is provided between the hollow connecting frame (33), the inner walls of the hollow connecting sleeve (34) and the hollow movable bar (35) are communicated, an output hole (37) is provided on the hollow movable bar (35), a power motor (38) is fixedly connected to the connecting block (31), an output shaft of the power motor (38) is fixedly connected to a power gear (39), an outer wall of the hollow connecting frame (33) is fixedly connected to a gear ring (310), and the gear ring (310) is meshed with the power gear (39).

2. The inner wall cleaning device for an industrial furnace tube according to claim 1, characterized in that: The walking mechanism (2) comprises a mounting plate (21), the mounting plate (21) is fixedly connected to the main frame (1), a driving motor (22) is fixedly connected to the inner wall of the mounting plate (21), an output shaft of the driving motor (22) is connected to a threaded rod (23), the threaded rod (23) is rotatably connected to the inner wall of the mounting plate (21), a movable block (24) is threadedly connected to the threaded rod (23), the movable block (24) is slidably connected to the inner wall of the mounting plate (21), a movable frame (25) is provided on the movable block (24), one end of the movable frame (25) is hinged to the movable block (24), the other end of the movable frame (25) is hinged to a positioning frame (26), one end of the positioning frame (26) is hinged to the mounting plate (21), the other end of the positioning frame (26) is rotatably connected to an electric driving wheel (27), and the walking mechanism (2) is arranged in a circular array on the main frame (1).

3. The inner wall dust cleaning device for an industrial furnace tube according to claim 2, characterized in that: A sealing structure is provided between the hollow connecting frame (33) and the connecting block (31); one end of the return spring (36) is fixedly connected to the hollow movable bar (35); and the other end of the return spring (36) is fixedly connected to the hollow connecting sleeve (34).

4. The inner wall dust cleaning device for an industrial furnace tube according to claim 3, characterized in that: The recovery mechanism (4) comprises a negative pressure cavity (41), the negative pressure cavity (41) being fixedly connected to the outer wall of the main frame (1), a negative pressure connecting pipe (42) being fixedly connected to the inner wall of the negative pressure cavity (41), and a circumferential array of surrounding holes (43) being provided on the outer wall of the negative pressure cavity (41).

5. The inner wall dust cleaning device for an industrial furnace tube according to claim 4, characterized in that: The driving motor (22) is a servo motor, and the threaded rod (23) adopts a trapezoidal thread.

6. The inner wall dust cleaning device for an industrial furnace tube according to claim 4, characterized in that: The inner wall of the mounting plate (21) is provided with a T-shaped sliding groove along the axial direction of the threaded rod (23), and the bottom of the movable block (24) is provided with a sliding block matching the T-shaped sliding groove.

7. The inner wall cleaning device for an industrial furnace tube according to claim 4, characterized in that: The outer surface of the electric drive wheel (27) is wrapped with a rubber anti-skid layer, and the mounting plate (21) is fixedly connected to the main frame (1) by bolts.

8. The inner wall dust cleaning device for an industrial furnace tube according to claim 4, characterized in that: The power motor (38) is a variable frequency motor, and the cleaning mechanism (3) is powered by an external cable.

9. The inner wall dust cleaning device for an industrial furnace tube according to claim 4, characterized in that: The walking mechanism (2), cleaning mechanism (3), and recovery mechanism (4) are arranged in sequence along the axial direction of the main frame (1), with the walking mechanism (2) located at the top and the bottom, the cleaning mechanism (3) located in the middle, and the recovery mechanism (4) located at the bottom.

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