Dehydrogenation device maintenance device and method thereof

Abstract

The invention discloses a dehydrogenation device maintenance device and method, and relates to the technical field of dehydrogenation device maintenance. Comprising a clamping mechanism and a cleaning mechanism, and the clamping mechanism is used for clamping a net fence, an inner net and an outer net which are matched with dehydrogenation devices of different sizes; the cleaning mechanism is used for cleaning the net fence, the inner net and the outer net; the cleaning device can adapt to net fences, inner nets and outer nets of different sizes through adjustment of the height adjusting mechanism and can automatically rotate and move, cleaning balls are driven to rotate in the spraying process of cleaning liquid, descaling and cleaning are conducted on the surfaces of the net fences, the inner nets and the outer nets and in net holes, and the cleaning effect is good. Scale on the surfaces of a net fence, an inner net and an outer net and in meshes of the dehydrogenation device can be automatically cleaned, safety is effectively improved, and the manual cleaning cost is greatly reduced.

Description

Technical Field

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

[0002] Dehydrogenation device is a widely used device in the field of chemical production to remove hydrogen atoms from organic compounds to achieve a specific chemical conversion process. It generally includes a reactor cylinder: as the outer shell of the device, it withstands the temperature, pressure and other conditions during the reaction process; a central tube: located in the innermost layer, the central tube is the gas phase discharge channel; a mesh fence: located between the central tube and the shell, and the interlayer with the central tube forms a catalyst bed, which is the main place for the dehydrogenation reaction to occur, and the middle of the mesh fence and the shell is the gas feed channel; a conical distributor: to evenly distribute the feed gas to the catalyst bed; an inner net and an outer net: play the role of supporting the catalyst, so that the catalyst is evenly distributed, and can also control the gas flow path and speed to ensure that the gas is fully in contact with the catalyst; a catalyst bed: composed of catalysts, inert bodies and heat storage bodies distributed in a specific layout, the bottom and top of the bed are usually alumina ceramic balls, and the middle is the catalyst. In existing dehydrogenation devices, the mesh fence, inner mesh and outer mesh are generally cylindrical metal structures with evenly distributed mesh holes on the surface. The size and shape of these mesh holes are determined according to specific process requirements, material characteristics, etc., and they are generally circular through holes. Smaller and more even mesh holes help to better carry the catalyst and prevent catalyst particle leakage. At the same time, they allow the gas to pass more smoothly, ensuring good contact and reaction between gas and solid.

[0003] During the use of the dehydrogenation device, different degrees of scaling will appear on the fence, inner net and outer net, and the scaling will affect the gas flow efficiency, catalyst activity and other issues. Therefore, the dehydrogenation device needs to be maintained regularly, including cleaning and removing the scaling on the fence, inner net and outer net. In the prior art, the fence, inner net and outer net are generally disassembled and cleaned manually. 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 for cleaning. However, since the chemical reagents used in acid washing, alkali washing and complexing agent cleaning are harmful to the human body, manual cleaning has safety hazards. In addition, since the mesh holes are numerous and small, it is difficult to clean the scaling in the mesh holes one by one by manual cleaning, and a large amount of labor costs are consumed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a dehydrogenation device maintenance device and method thereof, which can automatically clean the scale on the surface and mesh of the fence, inner net and outer net of the dehydrogenation device, effectively improve safety and greatly reduce 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 including two annular frames, a plurality of ball head rods radially penetrated on the annular frames, a clamping plate is arranged at the inner end of the ball head rods, a first rotating frame is rotatably arranged on the outer periphery of the annular frame, a first gear driven by a first motor is arranged 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 arranged on the first rotating frame, the ball heads of the ball head rods are respectively abutted against the arc-shaped limit plates, a first reset spring is arranged between the ball heads and the annular frames, and the arc-shaped limit plates gradually approach the center of the annular frames from one end to the other end; the cleaning mechanism includes a second rotating frame rotatably arranged on the outer periphery of the annular frame, a first rack is arranged between the two second rotating frames, and the second The rotating 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, a working frame is slidably hung on the first rack, a third gear driven by a third motor is provided on the working frame, the third gear is meshed with the first rack, a liquid storage chamber is provided on the working frame, the liquid storage chamber is connected with a first liquid supply pipe, a plurality of sleeves are provided at the bottom of the liquid storage chamber, a ball seat is provided at the bottom end of the sleeve, a cleaning ball is rotatably arranged in the ball seat, a raised scraping ring is evenly distributed on the surface of the cleaning ball in the weft direction, the outer periphery of the scraping ring is matched with the inner wall of the ball seat, a cleaning channel is provided on the ball seat, the cleaning channel is connected with the inner wall of the ball seat, and the cleaning liquid drives the cleaning ball to rotate when flowing out through the cleaning channel, 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 working frame. The clamping mechanism of the dehydrogenation device maintenance device drives the first rotating frame to rotate through 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 suitable for clamping net fences, inner nets and outer nets of different sizes; through the adjustment of the height adjustment component, the cleaning ball can be pressed against the net fences, inner nets and outer nets of different sizes for cleaning; the working frame can drive the third gear to rotate through the third motor, move and clean the net fences, inner nets and outer nets in the axial direction, and can drive the second rotating frame through the second motor Rotate and move 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 drives the cleaning ball to rotate due to the obstruction of the scraping ring. 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 arranged in the working frame, a second return spring arranged between the lifting seat and the working frame, a rotary motor fixed on the working frame, and a cam located on the rotary motor, the liquid storage chamber is arranged in the lifting seat, and an arc-shaped elastic plate is arranged on the top of the lifting seat, the top of the arc-shaped elastic plate is against the cam, and the cam is controlled by the rotary motor to rotate to adjust the height of the lifting seat. And through the rotation of the rotary motor and the arrangement of the arc-shaped elastic plate, the lifting seat can be quickly lifted and buffered to a certain extent after being adjusted to the set height, so that a certain degree of rapid adjustment can be achieved when encountering an incompletely regular circular surface. .

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

[0008] In the above technical solution, preferably, a rotating shaft is transversely arranged 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 realize 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 and the fence, inner net and outer net brushing more gently, avoiding scratching the surface of the fence, inner net and outer net.

[0010] In the above technical solution, preferably, a second rack is provided in the center of the two annular frames, another identical working frame is provided on the second rack, a support seat is provided on the outer side of each of the two annular frames, a fourth motor is provided on one of the support seats, one end of the second rack is detachably connected to the output shaft of the fourth motor, a rotating seat is provided on the other support seat, the rotation center of the rotating seat is coaxial with the rotation center of the output shaft of the fourth motor, and a first guide hole matching the second rack is provided in the center of the rotating seat. This structure can realize the simultaneous cleaning of the inner surface of the fence, the inner net and the outer net.

[0011] In the above technical solution, preferably, a mounting frame is fixed at the bottom of the annular frame, the bottom of the mounting frame 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 matched with the mounting frame, one end of the first rack is fixed to one of the second rotating frames, another second rotating frame is provided with a second guide hole matching the first rack, and the first rack is inserted into the second guide hole. This structure can adjust the distance of the annular frame, and there is no need to disassemble the first rack during the adjustment process, so it is convenient to clamp fences, inner nets and outer nets of different lengths.

[0012] In the above technical solution, preferably, matching annular grooves are provided between the first rotating frame and the annular frame, and between the second rotating frame and the annular frame, and a plurality of sliding balls are movably installed in the annular grooves. This structure makes the first rotating frame and the second rotating frame rotate more smoothly, reduces wear, and prolongs the service life.

[0013] In the above technical solution, preferably, the working frame is provided with an electric telescopic cylinder, the output end of the electric telescopic cylinder is provided with a nozzle rack, the bottom of the nozzle rack is provided with a plurality of nozzles, and the plurality of nozzles are connected to a second liquid supply pipe. With this structure, another cleaning liquid can be sprayed through the nozzle for cleaning, and the scale washed by the cleaning ball can be flushed down.

[0014] The maintenance method of the above-mentioned dehydrogenation device maintenance device includes the following steps: S1: adjusting the spacing of 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 the 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 because 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 fences, inner nets and outer nets of different sizes; the cleaning ball can be pressed against fences, inner nets and outer nets of different sizes for cleaning by adjusting the height adjustment component; the operating frame can drive the third gear to rotate by the third motor, move and clean the fences, inner nets and outer nets in the axial direction, and can be adjusted by the third gear. The second motor drives the second rotating frame to rotate, and moves and cleans the fence, inner net and outer net in the circumferential direction. 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 drives the cleaning ball to rotate due to the obstruction of the scraping ring. The cleaning ball rotates to scrape the surface of the fence, inner net and outer net by the scraping ring. Since 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 It is a 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 It is a schematic structural diagram of the cooperation between the ball head rod and the first rotating frame in an embodiment of the present invention.

[0021] Figure 6 It is a schematic diagram of the structure of the working frame and the first rack in the embodiment of the present invention.

[0022] Figure 7 It is a schematic cross-sectional structural diagram of a working frame in an embodiment of the present invention.

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

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

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figures 1 to 9A 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 arranged at the inner end of the ball head rod 2. A first rotating frame 4 is rotatably arranged on the outer periphery of the annular frame 1. A first gear 6 driven by a first motor 5 is arranged 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 arranged on the first rotating frame 4. The ball heads of the ball head rods 2 are respectively opposed to the arc-shaped limit plates 8. A first reset spring 9 is arranged between the ball heads and the annular frame 1. The arc-shaped limit plates 8 gradually approach the center of the annular frame 1 from one end to the other end. The cleaning mechanism includes a second rotating frame 10 rotatably arranged on the outer periphery of the annular frame 1. A first rack 11 is arranged between the two second rotating frames 10. A second gear 13 driven by a second motor 12 is arranged on the second rotating frame 10. The second gear 13 is meshed with a first gear ring 7 on the outer periphery of the annular frame 1. A second gear ring 14 is meshed on the outer periphery of the annular frame 1, and a working frame 15 is slidably hung on the first rack 11. A third gear 17 driven by a third motor 16 is provided on the working frame 15, and the third gear 17 is meshed with the first rack 11. A liquid storage chamber 18 is provided on the working 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 latitudinal 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, the cleaning ball 22 is driven to rotate. The part of the cleaning ball 22 exposed from the ball seat 21 is smaller than the mesh, and a height adjustment component for adjusting the height of the cleaning ball 22 is provided on the working 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 inwardly. 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 suitable for clamping fences, inner nets and outer nets of different sizes; through the adjustment of the height adjustment component, the cleaning ball 22 can be pressed against the 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, which drives 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. Since 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 that uses the power of the cleaning liquid to drive the cleaning balls 22 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 in 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 on the work frame 15, and an elliptical cam 27 located on the rotary motor 26. The liquid storage chamber 18 is disposed in the lifting seat 25. An arc-shaped elastic plate 28 is disposed on 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 to rotate by the rotary motor 26 to adjust the height of the lifting seat 25. The adoption of this structure can conveniently control the lifting and lowering of the lifting seat 25 through the rotation of the rotary motor 26, and the lifting seat 25 can be adjusted to a set height through the rotation of the rotary motor 26 and the provision of the arc-shaped elastic plate 28. After being adjusted to a set height, it can be quickly lifted and lowered and buffered to a certain extent, so that when encountering an incompletely regular circular surface, it can be quickly adjusted to a certain extent. 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 plurality of sleeves 20 are sealed and slidably connected with a slide tube 29 in the bottom end thereof, a ball seat 21 is arranged at the bottom end of the slide tube 29, and a third return spring 30 is arranged between the top of the slide tube 29 and the liquid storage chamber 18. With this structure, the slide tube 29 can be raised and lowered to a certain extent, so that each cleaning ball 22 can fit the arc surface or extend into the mesh. In order to prevent the slide tube 29 from slipping out of the sleeve 20, a limit structure is arranged between the slide 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 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, in order to avoid corrosion and extend the service life, the elastic rubber coating 32 is made of polytetrafluoroethylene. This structure makes the cleaning ball 22 and the net fence, inner net and outer net brushing more gently, avoiding scratching the surface of the net fence, inner net and outer net.

[0031] In this embodiment, a second rack 33 is provided at the center of the two annular frames 1, another identical work 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, a fourth motor 35 is provided on one of the support seats 34, 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, the rotation center of the rotating seat 36 is coaxial with the rotation center of the output shaft of the fourth motor 35, and a first guide hole 37 matching the second rack 33 is provided at the center of the rotating seat 36. The use of this structure can realize the simultaneous cleaning of the inner surface of the fence, the inner net and the outer net.

[0032] In this embodiment, a mounting frame 38 is fixed at 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 matched with the mounting frame 38. One end of the first rack 11 is fixed to a second rotating frame 10. A second guide hole 42 matching the first rack 11 is provided on the other second rotating frame 10. The first rack 11 is inserted into the second guide hole 42. The use of this structure can adjust the distance between the annular frames 1, so that the two annular frames 1 can adapt to the fixing of fences, inner nets and outer nets of different lengths, and the first rack 11 does not need to be disassembled during the adjustment process, which is convenient for clamping fences, inner nets and outer nets of different lengths.

[0033] In this embodiment, 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, and a plurality of sliding balls 44 are movably installed in the annular grooves 43. This structure makes the first rotating frame 4 and the second rotating frame 10 rotate more smoothly, reduces wear, and prolongs the service life.

[0034] In this embodiment, an electric telescopic cylinder 45 is provided on the work frame 15, a nozzle frame 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 frame 46, and a plurality of nozzles 47 are connected to a second liquid supply pipe 48. With this structure, another cleaning liquid can be sprayed through the nozzle for cleaning, and the scale scrubbed by the cleaning ball 22 can be washed down.

[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 net fence, inner net or outer net to be cleaned, and driving the movable control screw 40 to rotate by the translation drive motor 41, so as to achieve the adjustment of the spacing between the two annular frames 1; S2: extending the net 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 net 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 net fence, inner net or outer net, S5: supplying liquid through the first liquid supply pipe 19, 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 scrubs the surface and mesh of the net fence, inner net or outer net until the 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 translate 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 frames (1), a clamping plate (3) is arranged at the inner end of the ball head rods (2), a first rotating frame (4) is rotatably arranged on the outer periphery of the annular frames (1), a first gear (6) driven by a first motor (5) is arranged 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 frames (1), a plurality of arc-shaped limiting plates (8) are arranged on the first rotating frame (4), the ball heads of the ball head rods (2) are in contact with the first gear ring (7) on the outer periphery of the annular frames (1), and the first gear (6) is meshed with the first gear ring (7) on the outer periphery of the annular frames (1). The arc-shaped limit plates (8) are in one-to-one correspondence with each other, a first return spring (9) is arranged 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 arranged on the outer periphery of the annular frame (1), a first rack (11) is arranged between the two second rotating frames (10), a second gear (13) driven by a second motor (12) is arranged on the second rotating frame (10), and the second gear (13) is in contact with the outer periphery of the annular frame (1). The first rack (11) is meshed with a second gear ring (14); a working frame (15) is slidably mounted on the first rack (11); a third gear (17) driven by a third motor (16) is disposed on the working frame (15); the third gear (17) is meshed with the first rack (11); a liquid storage chamber (18) is disposed on the working frame (15); the liquid storage chamber (18) is connected to a first liquid supply pipe (19); a plurality of sleeves (20) are disposed at the bottom of the liquid storage chamber (18); a ball seat (21) is disposed at the bottom end of the sleeve (20); a cleaning ball is rotatably disposed in the ball seat (21) (22), the surface of the cleaning ball (22) is evenly distributed with raised scraping rings (23) in the latitudinal 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), the cleaning ball (22) is driven to rotate, the part of the cleaning ball (22) exposed from the ball seat (21) is smaller than the mesh, and the working 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 comprises 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 arranged on 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 to rotate by the rotating motor (26) to adjust the height of the lifting seat (25).

3. A dehydrogenation device maintenance device as claimed in claim 1, characterized in that: A sliding tube (29) is sealingly and slidably connected inside the bottom ends of the sleeves (20), 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 as claimed in claim 1 or 3, characterized in that: A rotating shaft (31) is transversely arranged inside 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 as claimed in 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 as claimed in claim 1, characterized in that: A second rack (33) is passed through the center of the two annular frames (1), and another identical working frame (15) is arranged on the second rack (33). A support seat (34) is arranged on the outer side of each of the two annular frames (1), and a fourth motor (35) is arranged on one of the support seats (34). One end of the second rack (33) is detachably connected to the output shaft of the fourth motor (35). A rotating seat (36) is arranged 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 arranged at the center of the rotating seat (36).

7. A dehydrogenation device maintenance device as claimed in 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 a 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), and an output end of the translation drive motor (41) is transmission-connected to the movable control screw (40). The movable control screw (40) is threadedly matched 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 inserted into the second guide hole (42).

8. A dehydrogenation device maintenance device as claimed in 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), and a plurality of sliding balls (44) are movably mounted in the annular grooves (43).

9. A dehydrogenation device maintenance device as claimed in claim 1, characterized in that: The working frame (15) is provided with an electric telescopic cylinder (45), the output end of the electric telescopic cylinder (45) is provided with a nozzle frame (46), the bottom of the nozzle frame (46) is provided with a plurality of nozzles (47), and the plurality of nozzles (47) are connected to a second liquid supply pipe (48).

10. A maintenance method for a dehydrogenation device maintenance device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: adjusting the spacing of the annular 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) with the first motor (5) to rotate so as to clamp the net fence, inner net or outer net; S3: driving the operation frame (15) with the third motor (16) to move to the starting point of the cleaning operation; S4: adjusting the height of the cleaning ball (22) by means of a 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 through the first liquid supply pipe (19), driving the second motor (12) and the third motor (16) to drive the operating frame (15) to rotate and translate, and the cleaning ball (22) scrubs the surface and mesh of the fence, inner net or outer net until cleaning is completed.

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