Dehydrogenation device maintenance device and method thereof

Abstract

The invention discloses a dehydrogenation device maintenance device and a method thereof, relating to the technical field of dehydrogenation device maintenance; the device comprises: a clamping mechanism and a cleaning mechanism, wherein the clamping mechanism is used for clamping mesh fences, inner nets and outer nets adapted to different sizes of dehydrogenation devices; the cleaning mechanism is used for cleaning the mesh fences, inner nets and outer nets; the mesh fences, inner nets and outer nets can be adapted to different sizes by adjusting a height adjustment mechanism, and the device can rotate and move on its own, and the cleaning ball is driven to rotate during the spraying of cleaning liquid, thereby descaling and cleaning the surfaces and mesh holes of the mesh fences, inner nets and outer nets, and can automatically clean scale on the surfaces and mesh holes of the mesh fences, inner nets and outer nets of the dehydrogenation device, effectively improving safety and greatly reducing the cost of manual cleaning.

Description

Technical Field

[0001] The present invention belongs to the technical field of dehydrogenation device maintenance devices, specifically a dehydrogenation device maintenance device and method thereof, in particular a cleaning and maintenance device for cleaning a fence, an external net or an internal net in a dehydrogenation device. Background Art

[0002] Dehydrogenation units are widely used in the chemical industry to remove hydrogen atoms from organic compounds to achieve specific chemical conversion processes. They generally consist of a reactor barrel, which serves as the outer shell of the unit and withstands the temperature, pressure, and other conditions during the reaction. A central tube, located in the innermost layer, contains the gas discharge channel. A mesh fence, located between the central tube and the shell, forms a catalyst bed with the central tube and is the primary site of the dehydrogenation reaction. The space between the mesh fence and the shell serves as the gas feed channel. A conical distributor evenly distributes the feed gas to the catalyst bed. Inner and outer meshes support the catalyst, ensuring uniform distribution and controlling the gas flow path and velocity to ensure sufficient contact between the gas and the catalyst. A catalyst bed, composed of catalyst, inert materials, and heat storage materials, is arranged in a specific layout. The bottom and top of the bed are typically alumina ceramic balls, with the catalyst in the middle. In existing dehydrogenation units, the mesh fences, inner and outer screens are typically cylindrical metal structures with evenly distributed mesh holes. The size and shape of these holes are determined by specific process requirements and material properties, and they are generally circular. Smaller, more evenly spaced mesh holes help better support the catalyst, preventing catalyst particle leakage while allowing gas to pass more smoothly, ensuring good contact and reaction between gas and solids.

[0003] During the use of the dehydrogenation device, varying degrees of scaling will appear on the fences, inner nets, and outer nets. Scaling can affect the gas flow efficiency and catalyst activity. Therefore, the dehydrogenation device needs to be maintained regularly, including cleaning and removing scale from the fences, inner nets, and outer nets. In the prior art, the fences, inner nets, and outer nets are generally disassembled and then manually cleaned. Depending on the type of scaling, acid washing, alkali washing, complexing agent cleaning, brushing, high-pressure water washing, or a combination of these methods may be used. However, since the chemical reagents used in acid washing, alkali washing, and complexing agent cleaning are harmful to the human body, manual cleaning poses a safety hazard. In addition, due to the large number of small meshes, manual cleaning is difficult to clean the scale in the meshes one by one, and consumes a lot of labor costs. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a dehydrogenation device maintenance device and method, which can automatically clean the scale on the surface and mesh of the fence, inner net and outer net of the dehydrogenation device, effectively improving safety and greatly reducing the cost of manual cleaning.

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions: a dehydrogenation device maintenance device, including a clamping mechanism and a cleaning mechanism, the clamping mechanism includes two annular frames, a plurality of ball head rods are radially penetrated on the annular frames, a clamping plate is provided at the inner end of the ball head rod, a first rotating frame is rotatably provided on the outer periphery of the annular frame, a first gear driven by a first motor is provided on the first rotating frame, the first gear is meshed with a first gear ring on the outer periphery of the annular frame, a plurality of arc-shaped limit plates are provided on the first rotating frame, the ball heads of the ball head rods are respectively counteracted against the arc-shaped limit plates, a first return spring is provided between the ball heads and the annular frames, and the arc-shaped limit plates gradually approach the center of the annular frame from one end to the other end; the cleaning mechanism includes a second rotating frame rotatably provided on the outer periphery of the annular frame, a first rack is provided between the two second rotating frames, and the second The rotatable frame is provided with a second gear driven by a second motor, the second gear is meshed with a second gear ring on the outer periphery of the annular frame, and an operating frame is slidably hung on the first rack, and a third gear driven by a third motor is provided on the operating frame, and the third gear is meshed with the first rack, and a liquid storage chamber is provided on the operating frame, and the liquid storage chamber is connected to the first liquid supply pipe, and a plurality of sleeves are provided at the bottom of the liquid storage chamber, and a ball seat is provided at the bottom end of the sleeve, and a cleaning ball is rotatably arranged in the ball seat, and a raised scraping ring is evenly distributed on the surface of the cleaning ball in the weft direction, and the outer periphery of the scraping ring matches the inner wall of the ball seat, and a cleaning channel is provided on the ball seat, and the cleaning channel is connected to the inner wall of the ball seat, and the cleaning liquid flows out through the cleaning channel to drive the cleaning ball to rotate, and the part of the cleaning ball exposed from the ball seat is smaller than the mesh, and a height adjustment component for adjusting the height of the cleaning ball is provided on the operating frame. The clamping mechanism of the dehydrogenation device maintenance device drives the first rotating frame to rotate by the first motor, so that the arc-shaped limit plate can squeeze the ball head rod inward. Since the arc-shaped limit plate gradually approaches the center of the annular frame from one end to the other, the clamping mechanism can be used to clamp fences, inner nets and outer nets of different sizes; by adjusting the height adjustment component, the cleaning ball can be pressed against fences, inner nets and outer nets of different sizes for cleaning. The working frame can be driven by the third motor to rotate the third gear, and move in the axial direction of the fences, inner nets and outer nets for cleaning, and the second rotating frame can be driven by the second motor The cleaning ball is rotated to clean the fence, inner net and outer net in the circumferential direction; during the cleaning process, the cleaning liquid is supplied to the liquid storage chamber by the first liquid supply pipe, and the cleaning liquid is sprayed out from the cleaning channel outlet of the ball seat through the sleeve; during the cleaning liquid spraying process, the cleaning liquid is blocked by the scraping ring, which drives the cleaning ball to rotate, and the cleaning ball rotates to scrape the surface of the fence, inner net and outer net by the scraping ring, and because the part of the cleaning ball exposed from the ball seat is smaller than the mesh, the cleaning ball can enter the mesh, and the scraping ring scrapes the inner wall of the mesh, thereby completing the automated cleaning process, effectively improving safety, and greatly reducing the cost of manual cleaning.

[0006] In the above technical solution, preferably, the height adjustment assembly includes a lifting seat disposed within the work frame, a second return spring disposed between the lifting seat and the work frame, a rotary motor fixed to the work frame, and a cam located on the rotary motor. The liquid storage chamber is disposed within the lifting seat, and an arc-shaped elastic plate is disposed on the top of the lifting seat, the top of the arc-shaped elastic plate abuts against the cam, and the cam is controlled by the rotary motor to rotate to adjust the height of the lifting seat. Furthermore, the rotation of the rotary motor and the provision of the arc-shaped elastic plate enable the lifting seat to be quickly raised and lowered to a certain extent and cushioned after being adjusted to a set height, thereby enabling a certain degree of rapid adjustment when encountering an irregular circular surface.

[0007] In the above technical solution, preferably, a sliding tube is sealed and slidably connected to the bottom end of each of the sleeves, the ball seat is provided at the bottom end of the sliding tube, and a third return spring is provided between the top of the sliding tube and the liquid storage chamber. This structure allows the sliding tube to be raised and lowered to a certain extent, so that each cleaning ball can fit on the arc surface or extend into the mesh.

[0008] In the above technical solution, preferably, a rotating shaft is arranged transversely in the ball seat, the cleaning ball is fixed on the rotating shaft, and the plurality of cleaning channels are located on one side of the rotating shaft. This structure is easy to install and can easily achieve stable rotation of the cleaning ball when the cleaning liquid is sprayed.

[0009] In the above technical solution, preferably, the outer layer of the cleaning ball is an elastic rubber layer. This structure makes the cleaning ball brushing the fence, inner net and outer net more gentle, avoiding scratching the surface of the fence, inner net and outer net.

[0010] In the above technical solution, preferably, a second rack is provided through the center of each of the two annular frames, another identical work rack is provided on the second rack, and a support base is provided on the outer side of each of the two annular frames. A fourth motor is provided on one of the support bases, and one end of the second rack is detachably connected to the output shaft of the fourth motor. A rotating base is provided on the other support base, the rotation center of the rotating base being coaxial with the rotation center of the output shaft of the fourth motor, and a first guide hole is provided at the center of the rotating base that matches the second rack. This structure enables simultaneous cleaning of the inner surfaces of the fence, inner net, and outer net.

[0011] In the above technical solution, preferably, a mounting bracket is fixed to the bottom of the annular frame, the bottom of the mounting bracket is slidably connected to the base, a movable control screw is rotatably provided on the base, a translation drive motor is provided on one side of the base, the output end of the translation drive motor is transmission-connected to the movable control screw, the movable control screw is threadedly engaged with the mounting bracket, one end of the first rack is fixed to a second rotating frame, and a second guide hole matching the first rack is provided on the other second rotating frame, and the first rack is inserted into the second guide hole. This structure can adjust the distance of the annular frame without disassembling the first rack during the adjustment process, making it convenient to clamp fences, inner nets, and outer nets of different lengths.

[0012] In the above technical solution, preferably, matching annular grooves are defined between the first turret and the annular frame, and between the second turret and the annular frame, with a plurality of sliding balls movably mounted within the annular grooves. This structure allows the first and second turrets to rotate more smoothly, reduces wear, and extends their service life.

[0013] In the above technical solution, preferably, the work frame is provided with an electric telescopic cylinder, the output end of which is provided with a nozzle rack, the bottom of which is provided with a plurality of nozzles, and the plurality of nozzles are connected to a second liquid supply pipe. This structure enables the nozzles to spray a different cleaning liquid for cleaning and to flush away scale removed by the cleaning balls.

[0014] The maintenance method of the above-mentioned dehydrogenation device maintenance device includes the following steps: S1: adjusting the spacing between the annular frames according to the length of the fence, inner net or outer net to be cleaned; S2: extending the fence, inner net or outer net into the two annular frames, and driving the first rotating frame to rotate by the first motor to clamp the fence, inner net or outer net; S3: driving the working frame to move to the starting point of the cleaning operation by the third motor; S4: adjusting the height of the cleaning ball through the height adjustment component until the bottom of the cleaning ball is in close contact with the fence, inner net or outer net, S5: supplying liquid through the first liquid supply pipe, driving the second motor and the third motor to drive the working frame to rotate and translate, and the cleaning ball brushes the surface and mesh of the fence, inner net or outer net until cleaning is completed.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the clamping mechanism of the dehydrogenation device maintenance device drives the first rotating frame to rotate by the first motor, so that the arc-shaped limit plate can squeeze the ball head rod inward, and since the arc-shaped limit plate gradually approaches the center of the annular frame from one end to the other end, the clamping mechanism can be suitable for clamping net fences, inner nets and outer nets of different sizes; the cleaning ball can be pressed against net fences, inner nets and outer nets of different sizes for cleaning by adjusting the height adjustment component, and the working frame can be driven by the third motor to rotate the third gear, and move in the axial direction of the net fence, inner net and outer net for cleaning, and can be adjusted by the third motor to rotate the third gear. The second motor drives the second rotating frame to rotate, and moves in the circumferential direction of the fence, inner net and outer net for cleaning; during the cleaning process, the first liquid supply pipe supplies cleaning liquid to the liquid storage chamber, and the cleaning liquid is sprayed out from the cleaning channel outlet of the ball seat through the sleeve. During the cleaning liquid spraying process, the cleaning liquid is blocked by the scraping ring, which drives the cleaning ball to rotate. The cleaning ball rotates to scrape the surface of the fence, inner net and outer net by the scraping ring, and because the part of the cleaning ball exposed from the ball seat is smaller than the mesh, the cleaning ball can enter the mesh, and the scraping ring scrapes the inner wall of the mesh, thereby completing the automated cleaning process, effectively improving safety, and greatly reducing the cost of manual cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention.

[0017] Figure 2 Schematic diagram of the connection structure between the annular frame and the base in an embodiment of the present invention.

[0018] Figure 3 Schematic diagram of the overall structure of the ring frame in an embodiment of the present invention.

[0019] Figure 4 Schematic diagram of the cross-sectional structure of the annular frame in an embodiment of the present invention.

[0020] Figure 5 Schematic diagram of the structure of the ball head rod and the first rotating frame in the embodiment of the present invention.

[0021] Figure 6 Schematic diagram of the structure of the working frame and the first rack in the embodiment of the present invention.

[0022] Figure 7 Schematic diagram of the cross-sectional structure of the work frame in an embodiment of the present invention.

[0023] Figure 8 This is a schematic cross-sectional view of the installation position of the cleaning ball in an embodiment of the present invention.

[0024] Figure 9 Schematic diagram of the structure of the cleaning ball in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments: Figures 1 to 9, a dehydrogenation device maintenance device includes a clamping mechanism and a cleaning mechanism, the clamping mechanism includes two annular frames 1, a plurality of ball head rods 2 are radially penetrated on the annular frame 1, a clamping plate 3 is provided at the inner end of the ball head rod 2, a first rotating frame 4 is rotatably provided on the outer periphery of the annular frame 1, a first gear 6 driven by a first motor 5 is provided on the first rotating frame 4, the first gear 6 is meshed with a first gear ring 7 on the outer periphery of the annular frame 1, a plurality of arc-shaped limit plates 8 are provided on the first rotating frame 4, the ball heads of the ball head rods 2 correspond to the arc-shaped limit plates 8 in a one-to-one manner, a first return spring 9 is provided between the ball heads and the annular frame 1, and the arc-shaped limit plates 8 gradually approach the center of the annular frame 1 from one end to the other; the cleaning mechanism includes a second rotating frame 10 rotatably provided on the outer periphery of the annular frame 1, a first rack 11 is provided between the two second rotating frames 10, a second gear 13 driven by a second motor 12 is provided on the second rotating frame 10, and the second gear 13 is meshed with the first gear ring 7 on the outer periphery of the annular frame The second gear ring 14 on the outer periphery of the annular frame 1 is meshed, and an operating frame 15 is slidably hung on the first rack 11. A third gear 17 driven by a third motor 16 is provided on the operating frame 15, and the third gear 17 is meshed with the first rack 11. A liquid storage chamber 18 is provided on the operating frame 15, and the liquid storage chamber 18 is connected to a first liquid supply pipe 19. A plurality of sleeves 20 are provided at the bottom of the liquid storage chamber 18, and a ball seat 21 is provided at the bottom of the sleeve 20. A cleaning ball 22 is rotatably arranged in the ball seat 21, and a raised scraping ring 23 is evenly distributed on the surface of the cleaning ball 22 in the weft direction. The outer periphery of the scraping ring 23 matches the inner wall of the ball seat 21, and a cleaning channel 24 is provided on the ball seat 21. The cleaning channel 24 is connected to the inner wall of the ball seat 21. When the cleaning liquid flows out through the cleaning channel 24, it drives the cleaning ball 22 to rotate. The part of the cleaning ball 22 exposed from the ball seat 21 is smaller than the mesh. A height adjustment component for adjusting the height of the cleaning ball 22 is provided on the operating frame 15.The clamping mechanism of the dehydrogenation device maintenance device drives the first rotating frame 4 to rotate through the first motor 5, so that the arc-shaped limit plate 8 can squeeze the ball head rod 2 inward. Since the arc-shaped limit plate 8 gradually approaches the center of the annular frame 1 from one end to the other, the clamping mechanism can be used to clamp fences, inner nets and outer nets of different sizes; the height adjustment component can be adjusted to enable the cleaning ball 22 to be pressed against fences, inner nets and outer nets of different sizes for cleaning. The working frame 15 can drive the third gear 17 to rotate through the third motor 16, and move and clean the fences, inner nets and outer nets in the axial direction, and can drive the second rotating frame 10 to rotate through the second motor 12. The cleaning is performed in the circumferential direction of the fence, inner net and outer net. During the cleaning process, the first liquid supply pipe 19 supplies cleaning liquid to the liquid storage chamber 18, and the cleaning liquid is sprayed out from the cleaning channel 24 outlet of the ball seat 21 through the sleeve 20. During the cleaning liquid spraying process, the cleaning liquid is blocked by the scraping ring 23, driving the cleaning ball 22 to rotate. The cleaning ball 22 rotates to scrape the surface of the fence, inner net and outer net by the scraping ring 23, and because the part of the cleaning ball 22 exposed from the ball seat 21 is smaller than the mesh, the cleaning ball 22 can enter the mesh, and the scraping ring 23 scrapes the inner wall of the mesh, thereby completing the automated cleaning process, effectively improving safety, and greatly reducing the cost of manual cleaning.

[0026] The structure in which the cleaning balls 22 are driven by the power of the cleaning liquid to scrub significantly facilitates the design of the power mechanism and reduces the cost of the scrubbing mechanism. At the same time, the structure is simple and the number of cleaning balls 22 can be easily increased or decreased.

[0027] In this embodiment, the height adjustment assembly includes a lifting seat 25 disposed within the work frame 15, a second return spring 251 disposed between the lifting seat 25 and the work frame 15, a rotary motor 26 fixed to the work frame 15, and an elliptical cam 27 located on the rotary motor 26. The liquid storage chamber 18 is disposed within the lifting seat 25. An arc-shaped elastic plate 28 is disposed at the top of the lifting seat 25. The top of the arc-shaped elastic plate 28 abuts against the cam 27. The cam 27 is controlled by the rotary motor 26 to rotate to adjust the height of the lifting seat 25. This structure allows the lifting and lowering of the lifting seat 25 to be conveniently controlled by the rotation of the rotary motor 26. Furthermore, the rotation of the rotary motor 26 and the provision of the arc-shaped elastic plate 28 allow the lifting seat 25 to be quickly raised and lowered to a certain extent and buffered after being adjusted to a set height, thereby enabling a certain degree of rapid adjustment when encountering an irregular circular surface. Of course, in other embodiments, various linear drive devices may be used to achieve the lifting of the lifting seat 25 , for example, one end of an electric telescopic cylinder or a pneumatic cylinder is fixed to the work frame 15 , and the other end is fixed to the lifting seat 25 .

[0028] In this embodiment, a sliding tube 29 is sealed and slidably connected to the bottom ends of several sleeves 20. A ball seat 21 is disposed at the bottom end of the sliding tube 29. A third return spring 30 is disposed between the top of the sliding tube 29 and the liquid storage chamber 18. This structure allows the sliding tube 29 to rise and fall to a certain extent, allowing each cleaning ball 22 to conform to the arc surface or extend into the mesh. To prevent the sliding tube 29 from sliding out of the sleeve 20, a limit structure is provided between the sliding tube 29 and the sleeve 20.

[0029] In this embodiment, a rotating shaft 31 is transversely arranged in the ball seat 21, a cleaning ball 22 is fixed on the rotating shaft 31, and a plurality of cleaning channels 24 are located on one side of the rotating shaft 31. This structure is easy to install and can easily realize the stable rotation of the cleaning ball 22 when the cleaning liquid is sprayed.

[0030] In this embodiment, the outer layer of the cleaning ball 22 is an elastic rubber coating 32. In this embodiment, to prevent corrosion and extend service life, the elastic rubber coating 32 is made of polytetrafluoroethylene. This structure allows the cleaning ball 22 to brush more gently against the fence, inner mesh, and outer mesh, avoiding scratches on the fence, inner mesh, and outer mesh surfaces.

[0031] In this embodiment, a second rack 33 is centrally disposed between the two annular frames 1. Another identical work frame 15 is mounted on the second rack 33. A support base 34 is disposed on the outer side of each annular frame 1. A fourth motor 35 is mounted on one support base 34. One end of the second rack 33 is detachably connected to the output shaft of the fourth motor 35. A rotating base 36 is mounted on the other support base 34. The rotation center of the rotating base 36 is coaxial with the rotation center of the output shaft of the fourth motor 35. A first guide hole 37 is centrally disposed in the rotating base 36, which mates with the second rack 33. This structure enables simultaneous cleaning of the inner surfaces of the fence, inner net, and outer net.

[0032] In this embodiment, a mounting bracket 38 is fixed to the bottom of the annular frame 1. The bottom of the mounting bracket 38 is slidably connected to a base 39. A movement control screw 40 is rotatably provided on the base 39. A translation drive motor 41 is provided on one side of the base 39. The output end of the translation drive motor 41 is in transmission connection with the movement control screw 40. The movement control screw 40 is threadedly engaged with the mounting bracket 38. One end of the first rack 11 is fixed to a second rotating frame 10. The second rotating frame 10 is provided with a second guide hole 42 that matches the first rack 11. The first rack 11 is inserted into the second guide hole 42. This structure allows the distance between the annular frames 1 to be adjusted, so that the two annular frames 1 can adapt to the fixing of fences, inner nets, and outer nets of different lengths. The adjustment process does not require the first rack 11 to be disassembled, which facilitates the clamping of fences, inner nets, and outer nets of different lengths.

[0033] In this embodiment, matching annular grooves 43 are provided between the first turret 4 and the annular frame 1, and between the second turret 10 and the annular frame 1. A plurality of sliding balls 44 are movably mounted within the annular grooves 43. This structure allows the first turret 4 and the second turret 10 to rotate more smoothly, reduces wear, and prolongs their service life.

[0034] In this embodiment, the work frame 15 is provided with an electric telescopic cylinder 45. A nozzle rack 46 is provided at the output end of the electric telescopic cylinder 45. A plurality of nozzles 47 are provided at the bottom of the nozzle rack 46. Each nozzle 47 is connected to a second liquid supply pipe 48. This structure allows the nozzles to spray a different cleaning liquid for cleaning and to flush away scale removed by the cleaning balls 22.

[0035] The maintenance method of the above-mentioned dehydrogenation device maintenance device includes the following steps: S1: adjusting the spacing of the annular frames 1 according to the length of the fence, inner net or outer net to be cleaned, and driving the movable control screw 40 to rotate by the translation drive motor 41 to achieve the adjustment of the spacing between the two annular frames 1; S2: inserting the fence, inner net or outer net into the two annular frames 1, and driving the first rotating frame 4 to rotate by the first motor 5 to clamp the fence, inner net or outer net; S3: driving the working frame 15 to move to the starting point of the cleaning operation by the third motor 16; S4: adjusting the height of the cleaning ball 22 by the height adjustment component until the bottom of the cleaning ball 22 is in close contact with the fence, inner net or outer net; S5: supplying liquid by the first liquid supply pipe 19, and driving the second motor 12 and the third motor 16 to drive the working frame 15 to rotate and translate, and the cleaning ball 22 brushes the surface and mesh of the fence, inner net or outer net until cleaning is completed. During the cleaning process, the second motor 12 and the third motor 16 can work simultaneously to drive the working frame 15 to perform spiral cleaning, or the second motor 12 can work first to perform circular cleaning and then the third motor 16 can move horizontally to perform circular progressive cleaning.

[0036] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A dehydrogenation device maintenance device, characterized in that: The invention comprises a clamping mechanism and a cleaning mechanism, wherein the clamping mechanism comprises two annular frames (1), a plurality of ball head rods (2) are radially penetrated on the annular frame (1), a clamping plate (3) is provided at the inner end of the ball head rod (2), a first rotating frame (4) is provided on the outer periphery of the annular frame (1), a first gear (6) driven by a first motor (5) is provided on the first rotating frame (4), the first gear (6) is meshed with a first gear ring (7) on the outer periphery of the annular frame (1), a plurality of arc-shaped limiting plates (8) are provided on the first rotating frame (4), and the ball head of the ball head rod (2) is engaged with the first gear ring (7) on the outer periphery of the annular frame (1). The arc-shaped limit plates (8) are in one-to-one correspondence with each other, a first return spring (9) is provided between the ball head and the annular frame (1), and the arc-shaped limit plate (8) gradually approaches the center of the annular frame (1) from one end to the other end; the cleaning mechanism comprises a second rotating frame (10) rotatably provided on the outer periphery of the annular frame (1), a first rack (11) is provided between the two second rotating frames (10), a second gear (13) driven by a second motor (12) is provided on the second rotating frame (10), and the second gear (13) is in contact with the outer periphery of the annular frame (1). The second gear ring (14) is engaged, and an operating frame (15) is slidably hung on the first rack (11). The operating frame (15) is provided with a third gear (17) driven by a third motor (16). The third gear (17) is engaged with the first rack (11). A liquid storage chamber (18) is provided on the operating frame (15), and the liquid storage chamber (18) is connected to a first liquid supply pipe (19). A plurality of sleeves (20) are provided at the bottom of the liquid storage chamber (18), and a ball seat (21) is provided at the bottom end of the sleeve (20). A cleaning ball is rotatably provided in the ball seat (21). (22), the surface of the cleaning ball (22) is evenly distributed with raised scraping rings (23) in the weft direction, the outer periphery of the scraping rings (23) matches the inner wall of the ball seat (21), the ball seat (21) is provided with a cleaning channel (24), the cleaning channel (24) is connected with the inner wall of the ball seat (21), when the cleaning liquid flows out through the cleaning channel (24), it drives the cleaning ball (22) to rotate, the part of the cleaning ball (22) exposed from the ball seat (21) is smaller than the mesh, and the operating frame (15) is provided with a height adjustment component for adjusting the height of the cleaning ball (22).

2. A dehydrogenation device maintenance device according to claim 1, characterized in that: The height adjustment assembly includes a lifting seat (25) arranged in the working frame (15), a second return spring (251) arranged between the lifting seat (25) and the working frame (15), a rotating motor (26) fixed on the working frame (15), and a cam (27) located on the rotating motor (26); the liquid storage chamber (18) is arranged in the lifting seat (25); an arc-shaped elastic plate (28) is provided on the top of the lifting seat (25); the top of the arc-shaped elastic plate (28) is in contact with the cam (27); the cam (27) is controlled by the rotating motor (26) to rotate to adjust the height of the lifting seat (25).

3. A dehydrogenation device maintenance device according to claim 1, characterized in that: The bottom ends of the sleeves (20) are sealed and slidably connected to a sliding tube (29), the ball seat (21) is arranged at the bottom end of the sliding tube (29), and a third return spring (30) is arranged between the top of the sliding tube (29) and the liquid storage chamber (18).

4. A dehydrogenation device maintenance device according to claim 1 or 3, characterized in that: A rotating shaft (31) is transversely arranged in the ball seat (21), the cleaning ball (22) is fixed on the rotating shaft (31), and a plurality of cleaning channels (24) are located on one side of the rotating shaft (31).

5. A dehydrogenation device maintenance device according to claim 4, characterized in that: The outer layer of the cleaning ball (22) is an elastic rubber coating layer (32).

6. A dehydrogenation device maintenance device according to claim 1, characterized in that: A second rack (33) is provided through the center of the two annular frames (1), and another identical working frame (15) is provided on the second rack (33). A support seat (34) is provided on the outer side of each of the two annular frames (1), wherein a fourth motor (35) is provided on one of the support seats (34), and one end of the second rack (33) is detachably connected to the output shaft of the fourth motor (35). A rotating seat (36) is provided on the other support seat (34), and the rotation center of the rotating seat (36) is coaxial with the rotation center of the output shaft of the fourth motor (35). A first guide hole (37) matching the second rack (33) is provided at the center of the rotating seat (36).

7. A dehydrogenation device maintenance device according to claim 1, characterized in that: A mounting frame (38) is fixed to the bottom of the annular frame (1), and the bottom of the mounting frame (38) is slidably connected to the base (39). A movable control screw (40) is rotatably provided on the base (39). A translation drive motor (41) is provided on one side of the base (39). The output end of the translation drive motor (41) is transmission-connected to the movable control screw (40). The movable control screw (40) is threadedly engaged with the mounting frame (38). One end of the first rack (11) is fixed to one of the second rotating frames (10), and another second rotating frame (10) is provided with a second guide hole (42) matching the first rack (11), and the first rack (11) is passed through the second guide hole (42).

8. A dehydrogenation device maintenance device according to claim 1, characterized in that: Matching annular grooves (43) are provided between the first rotating frame (4) and the annular frame (1), and between the second rotating frame (10) and the annular frame (1). A plurality of sliding balls (44) are movably installed in the annular grooves (43).

9. A dehydrogenation device maintenance device according to claim 1, characterized in that: An electric telescopic cylinder (45) is provided on the operating frame (15), a nozzle rack (46) is provided at the output end of the electric telescopic cylinder (45), a plurality of nozzles (47) are provided at the bottom of the nozzle rack (46), and the plurality of nozzles (47) are connected to a second liquid supply pipe (48).

10. A maintenance method for a dehydrogenation device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: adjusting the spacing of the ring frame (1) according to the length of the fence, inner net or outer net to be cleaned; S2: inserting the net fence, inner net or outer net into the two annular frames (1), and driving the first rotating frame (4) by the first motor (5) to rotate to clamp the net fence, inner net or outer net; S3: driving the working frame (15) by the third motor (16) to move to the starting point of the cleaning operation; S4: The height of the cleaning ball (22) is adjusted by the height adjustment component until the bottom of the cleaning ball (22) is in close contact with the fence, inner net or outer net. S5: The working frame (15) is driven to rotate and translate by the first liquid supply pipe (19) and the second motor (12) and the third motor (16), and the cleaning ball (22) is scrubbed on the surface and mesh of the fence, inner net or outer net until cleaning is completed.

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