Underwater instruments with light windows and underwater light window cleaning devices

Abstract

This utility model discloses an underwater instrument with a light window and an underwater light window cleaning device. The cleaning device includes a drive motor, a transmission assembly, and a cleaning assembly. The transmission assembly includes an inner magnetic pole assembly and an outer magnetic pole assembly. The cleaning assembly is mounted on the outer magnetic pole assembly. The underwater light window cleaning device includes a sealed chamber formed by a cabin, an end cap, and an isolation sleeve. The isolation sleeve is installed at one end of the cabin. The drive motor is located inside the cabin, and the inner magnetic pole assembly is located inside the isolation sleeve. The output shaft of the drive motor is fixedly connected to the inner magnetic pole assembly, and the inner magnetic pole assembly is rotatably connected to the isolation sleeve. The outer magnetic pole assembly is rotatably connected to the isolation sleeve. By encapsulating the motor in a dry-sealed chamber and using magnetic coupling, the non-contact transmission of the motor's output power is achieved. This effectively isolates the influence of seawater pressure and the medium on the output power source. The static seal achieves zero leakage of the motor's sealed chamber, resulting in high reliability and application stability.

Description

Technical Field

[0001] This utility model relates to the field of underwater monitoring instrument technology, and in particular to an optical window cleaning device and underwater instrument used in underwater environments, especially in high-pressure underwater environments. Background Technology

[0002] The process of fouling underwater light windows begins with the formation of a thin fouling film. Depending on the type of microorganism, the thickness can range from tens to four or five hundred micrometers. This film roughens the surface of the light window glass, making it easier for microorganisms or marine organisms to adhere to it. Once the film forms, various microorganisms and organisms, due to phototaxis or food chain relationships, such as various green algae and barnacles, gradually attach to the light window, causing severe fouling.

[0003] Contamination of underwater instruments and equipment by underwater organisms severely affects their corrosion resistance, sealing, pressure resistance, and movement performance. This is especially true for equipment with light windows, where the phototaxis of organisms makes them more susceptible to attachment, altering underwater optical transmission characteristics. This leads to reduced light transmission intensity and changes in refractive index, resulting in decreased irradiance and irradiated area of ​​underwater light sources, blurred images from underwater cameras, and inaccurate measurement accuracy and reduced sensitivity of optical sensors.

[0004] Common methods for cleaning underwater light windows include rotary mechanical cleaning, UV lamp irradiation, and seawater electrolytic chlorination. Rotary mechanical cleaning is one of the most effective methods currently available, offering lower power consumption, faster cleaning efficiency, and a wider cleaning area. It is frequently used for cleaning fouled light windows of underwater instruments and equipment.

[0005] Currently, commonly used underwater rotary mechanical cleaning mechanisms employ dry friction motors or oil-filled motors as the actuators for underwater rotary transmission. Dry friction motors use a dry chamber seal, with the motor output shaft sealed by a radial sealing ring. This sealing method is only suitable for shallow water environments. As water depth increases, a significant pressure difference exists between the external environment and the dry chamber, easily leading to the failure of the radial sealing ring and water ingress into the dry chamber. Oil-filled motors, on the other hand, use an oil-filled motor chamber. The pressure balance between the external environment and the oil-filled chamber is achieved through the elastic deformation of the oil bladder or membrane between the oil chamber and the external water. This method can be used in high-pressure deep-sea environments. However, the motor carries a small amount of oil from the internal oil chamber during rotation, causing the oil level in the motor's oil-filled chamber to gradually decrease with increasing rotational speed. This method has a limited service life, and in deep-sea environments, wear and aging of the sealing rings can easily lead to seal failure, making long-term reliable operation impossible.

[0006] Existing brush structures use a combination of bristles and rubber to remove sand and algae particles from the optical window. This method removes large-scale objects and organisms. While this brush combination is common, it is not suitable for the microscopic fouling mechanism of underwater instrument optical windows, nor does it possess the contact mechanical properties required for underwater high-pressure environments. Summary of the Invention

[0007] Based on this, the present invention provides an underwater instrument with a light window and an underwater light window cleaning device to solve the technical problem that when the oil-filled motor rotates, it carries a small amount of oil from the internal oil chamber, causing the oil volume in the motor's oil-filled chamber to gradually decrease with the increase of the number of rotations and speed, resulting in a certain service life, sealing failure, and inability to operate reliably for a long time.

[0008] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0009] An underwater light window cleaning device includes a drive motor, a transmission assembly, and a cleaning assembly. The transmission assembly includes an inner magnetic pole assembly and an outer magnetic pole assembly. The cleaning assembly is mounted on the outer magnetic pole assembly.

[0010] The underwater light window cleaning device includes a sealed chamber formed by a cabin body, an end cap, and an isolation sleeve; the end cap is sealed to the first end of the cabin body; the isolation sleeve includes a barrel-shaped part, an annular part located at the opening of the barrel-shaped part, and an outer cylindrical part located on the annular part, the outer cylindrical part being coaxially arranged with the barrel-shaped part, and the annular part being sealed to the second end of the cabin body;

[0011] The drive motor is located inside the cabin, the inner magnetic pole assembly is located inside the isolation sleeve, the output shaft of the drive motor is fixedly connected to the inner magnetic pole assembly, and the inner magnetic pole assembly is rotatably connected to the barrel-shaped part of the isolation sleeve; the outer magnetic pole assembly is located outside the isolation sleeve and is rotatably connected to the outer cylindrical part and the barrel-shaped part of the isolation sleeve.

[0012] The underwater light window cleaning device described above,

[0013] The inner magnetic pole assembly includes a shaft and an inner magnetic pole fixedly mounted to the shaft; the inner side of the bottom of the barrel-shaped part has a groove, a bearing I is provided between the end of the shaft and the groove, and an end shaft is provided on the outer side of the bottom of the barrel-shaped part, the outer diameter of the end shaft being smaller than the outer diameter of the barrel-shaped part;

[0014] The external magnetic pole assembly includes a coupling output component and an external magnetic pole located within the coupling output component; the coupling output component includes a coupling barrel-shaped portion, the inner side of the barrel bottom of the coupling barrel-shaped portion has a coupling groove, a bearing III is provided between the end shaft and the coupling groove, and a bearing II is provided between the outer wall of the coupling barrel-shaped portion and the inner wall of the outer cylinder portion.

[0015] The underwater light window cleaning device described above has a positioning structure on the inner wall of the outer cylinder and the outer wall of the coupling barrel-shaped part, and the positioning structure is connected to the bearing II.

[0016] The underwater light window cleaning device described above includes a protective sleeve that forms a cavity covering the outer magnetic pole assembly, and the protective sleeve is connected to the outer cylindrical portion of the isolation sleeve.

[0017] As described above, in the underwater light window cleaning device, there is a bearing II between the outer magnetic pole assembly and the outer cylinder, and the sheath is used to axially limit the bearing II.

[0018] As described above, in the underwater light window cleaning device, the sheath has a through hole, and the outer side of the bottom of the coupling barrel-shaped portion of the outer magnetic pole assembly has a coupling output shaft, at least a portion of which extends out of the sheath from the through hole.

[0019] As described above, the underwater light window cleaning device includes a cleaning component comprising a brush rod, an elastic brush body, an end cap, and a screw. The brush rod is adjustablely mounted on the coupling output component. The brush rod has a receiving cavity and an opening slot communicating with the receiving cavity. The elastic brush body includes a mounting part and a brush body part. The mounting part is mounted in the receiving cavity via the end cap and the screw, and the brush body part extends out of the opening slot.

[0020] As described above, the underwater light window cleaning device has a cylindrical mounting part and a triangular prism brush body, which is made of a hydrophilic elastomer material with a hardness of 45HA-55HA.

[0021] An underwater instrument with a light window, the instrument comprising:

[0022] Mounting bracket;

[0023] The instrument body is mounted on the mounting bracket, and the instrument body has a light window;

[0024] The aforementioned light window cleaning device is installed on the mounting bracket and is used to clean the light window.

[0025] As described above, in the underwater instrument with a light window, the light window cleaning device and the instrument body are located on both sides of the mounting bracket. The light window cleaning device and the instrument body are provided with clamping grooves. The light window cleaning device and the instrument body are respectively mounted on the mounting bracket by clamps or cable ties. The mounting bracket is formed with at least one pair of cleaning device holding arms for holding the light window cleaning device and at least one pair of instrument holding arms for holding the instrument body.

[0026] Compared with the prior art, the advantages and positive effects of this utility model are:

[0027] This utility model underwater light window cleaning device includes a drive motor, a transmission assembly, and a cleaning assembly. The transmission assembly includes an inner magnetic pole assembly and an outer magnetic pole assembly. The cleaning assembly is mounted on the outer magnetic pole assembly. The underwater light window cleaning device includes a sealed chamber formed by a cabin body, an end cap, and an isolation sleeve. The end cap is sealed to the first end of the cabin body. The isolation sleeve includes a barrel-shaped portion, an annular portion located at the opening of the barrel-shaped portion, and an outer cylindrical portion located on the annular portion. The outer cylindrical portion is coaxially arranged with the barrel-shaped portion, and the annular portion is sealed to the second end of the cabin body. The drive motor is located inside the cabin body, and the inner magnetic pole assembly is located inside the isolation sleeve. The output shaft of the drive motor is fixedly connected to the inner magnetic pole assembly, and the inner magnetic pole assembly is rotatably connected to the barrel-shaped portion of the isolation sleeve. The outer magnetic pole assembly is located outside the isolation sleeve and is rotatably connected to the outer cylindrical portion and the barrel-shaped portion of the isolation sleeve. The motor and inner magnetic poles are encapsulated within a dry-sealed chamber. Utilizing magnetic coupling, the attractive and repulsive forces between the permanent magnets of the inner and outer magnetic pole components in the transmission assembly enable non-contact power transmission from the motor. This effectively isolates the power source from the influence of seawater pressure and the surrounding medium. Static sealing achieves zero leakage within the motor's sealed chamber, resulting in high reliability and application stability. The annular portion at the opening of the barrel-shaped section provides a sealed connection to the chamber body. The radial dimension of this sealing connection is close to the outer diameter of the inner magnetic poles, reducing the radial dimension of the sealing structure and improving deep-sea sealing reliability. The outer magnetic pole component is rotatably connected to both the outer cylindrical portion and the barrel-shaped portion of the isolation sleeve, enhancing the rotational stability of the outer magnetic pole component and thus improving the cleaning effect of the cleaning assembly.

[0028] This utility model relates to an underwater instrument with a light window, comprising a mounting bracket, an instrument body, and a light window cleaning device. The instrument body and the light window cleaning device are mounted on the mounting bracket. The instrument body has a light window; the light window cleaning device is used to clean the light window. Through the rotation output of the motor in the light window cleaning device, the cleaning component is driven to clean the surface of the glass light window, effectively reducing underwater imaging blurring caused by reduced light transmission intensity and refractive index changes due to biological adhesion in seawater, as well as inaccurate measurement accuracy and reduced sensitivity of optical sensors.

[0029] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of an underwater instrument with a light window according to a specific embodiment of the present invention;

[0032] Figure 2 An exploded view of an underwater instrument with a light window according to a specific embodiment of the present invention;

[0033] Figure 3 This is an exploded view of an underwater light window cleaning device according to a specific embodiment of the present invention;

[0034] Figure 4 This is a longitudinal sectional view of an underwater light window cleaning device according to a specific embodiment of the present invention;

[0035] Figure 5 for Figure 4 Enlarged view at the top.

[0036] Figure 6 This is a longitudinal sectional view of the isolation sleeve according to a specific embodiment of the present utility model.

[0037] Figure 7 This is a longitudinal sectional view of the coupling output component according to a specific embodiment of the present invention.

[0038] Figure 8 This is a schematic diagram showing the arrangement of the inner and outer magnetic poles in a specific embodiment of the present invention;

[0039] Figure 9 This is a cross-sectional view of the cleaning component according to a specific embodiment of the present invention;

[0040] Figure 10 for Figure 9 Sectional view along the middle AA direction;

[0041] Figure 11 This is a schematic diagram of the brush rod at point AA in a specific embodiment of this utility model.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Drive motor;

[0044] 2. Cabin;

[0045] 3. Isolation sleeve; 301. Barrel-shaped part; 302. Annular part; 303. Groove; 304. End shaft; 305. Outer cylinder part;

[0046] 4. Internal magnetic poles; 41. Shaft;

[0047] 5. External magnetic poles;

[0048] 6. End caps;

[0049] 7. Clean the components;

[0050] 8. Locking screws;

[0051] 9. Coupling output component; 91. Coupling barrel-shaped part; 911. Protrusion; 92. Coupling groove; 93. Coupling output shaft;

[0052] 10. Sealing ring I; 11. Sealing ring II;

[0053] 12. Watertight connector;

[0054] 13. Bolt; 14. Bolt;

[0055] 15. Bearing I; 16. Bearing II; 17. Bearing III;

[0056] 18. Support steps;

[0057] 19. Sheath; 191. Through hole;

[0058] 20. Edge; 21. Lower edge; 22. Shaft retaining ring;

[0059] 23. Brush handle; 24. Brush handle end cap; 25. Screw; 26. Elastic brush body; 27. Opening groove;

[0060] 30. Mounting bracket; 31. Cleaning device holding arm; 32. Instrument holding arm;

[0061] 40. Instrument body; 50. Light window cleaning device. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0063] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0064] like Figure 1-2 As shown, an underwater instrument with a light window includes a mounting bracket 30, an instrument body 40, and a light window cleaning device 50.

[0065] Both the instrument body 40 and the light window cleaning device 50 are mounted on the mounting bracket 30.

[0066] The instrument body 40 has a light window, and the light window cleaning device 50 is used to clean the light window.

[0067] The light window cleaning device 50 and the instrument body 40 are respectively fixed on the mounting bracket 30. The light window cleaning device 50 and the instrument body 40 are located on both sides of the mounting bracket 30 to ensure that there is a small radial distance between the light window cleaning device 50 and the instrument body 40 as much as possible.

[0068] Both the light window cleaning device 50 and the instrument body 40 have clamping slots. These slots are mounted on the mounting bracket 30 using clamps or cable ties. The clamps or cable ties pass through the mounting bracket 30 and are tightened within the clamping slots, securely fixing the light window cleaning device 50 and the instrument body 40 to the mounting bracket 30. The clamping slots have a wide axial spacing, allowing for axial adjustment to ensure a tight fit between the cleaning components of the light window cleaning device 50 and the light window of the instrument body 40.

[0069] To improve the stability and ease of installation of the light window cleaning device 50 and the instrument body 40 with the mounting bracket 30, at least one pair of cleaning device holding arms 31 for holding the light window cleaning device 50 and at least one pair of instrument holding arms 32 for holding the instrument body 40 are formed on the mounting bracket 30.

[0070] The holding arm forms an arc-shaped holding part, which facilitates holding the instrument body 40 and the light window cleaning device 50.

[0071] The clamp or cable tie passes through the holding arm on the mounting bracket 30.

[0072] The axis of the light window cleaning device 50 is perpendicular to the light window, the cleaning component is perpendicular to the axis of the light window cleaning device 50, the cleaning component is in contact with the light window, and the cleaning component swings to clean the light window.

[0073] like Figures 3-10 As shown, an underwater light window cleaning device uses magnetic coupling for contactless underwater power transmission.

[0074] The underwater light window cleaning device includes a drive motor 1, a transmission assembly, and a cleaning assembly.

[0075] The transmission assembly includes an inner magnetic pole assembly and an outer magnetic pole assembly.

[0076] The drive motor 1 is connected to the inner magnetic pole assembly and drives the inner magnetic pole assembly to rotate. The inner magnetic pole assembly drives the outer magnetic pole assembly to rotate through magnetic force. The cleaning component is installed on the outer magnetic pole assembly.

[0077] The underwater light window cleaning device includes a sealed chamber formed by the chamber body 2, end cap 6, and isolation sleeve 3.

[0078] The end cap 6 is sealed to the first end of the cabin 2. The end cap 6 is installed at the first end of the cabin 2 by sealing ring II11. The end cap 6 is fixed to the cabin 2 by bolts 14.

[0079] A watertight connector 12 is installed on the end cap 6.

[0080] The isolation sleeve 3 is installed at the second end of the compartment 2. The isolation sleeve 3 is sealed to the compartment 2 by a sealing ring I10. The isolation sleeve 3 is fixedly installed to the compartment 2 by bolts 13.

[0081] The isolation sleeve 3 includes a barrel-shaped portion 301, an annular portion 302 located at the opening of the barrel-shaped portion 301, and an outer cylindrical portion 305 located on the annular portion 302.

[0082] The annular portion 302 is located around the opening of the barrel-shaped portion 301, and the annular portion 302 is sealed to the second end of the compartment 2.

[0083] The outer cylindrical portion 305 and the barrel-shaped portion 301 are coaxially arranged, and the outer cylindrical portion 305 and the barrel-shaped portion 301 are located on the same side of the annular portion 302.

[0084] The chamber 2, isolation sleeve 3, end cap 6, sealing ring I10, sealing ring II11 and watertight connector 12 are connected by bolts 13 and 14 to form a pressure-resistant dry chamber static sealing cavity, which is a sealed chamber.

[0085] The drive motor 1 is located inside the cabin 2, the inner magnetic pole assembly is located inside the isolation sleeve 3, the output shaft of the drive motor 1 is fixedly connected to the inner magnetic pole assembly, and the inner magnetic pole assembly is rotatably connected to the barrel-shaped part 301 of the isolation sleeve 3; the outer magnetic pole assembly is located outside the isolation sleeve 3 and is rotatably connected to the outer cylindrical part 305 and the barrel-shaped part 301 of the isolation sleeve 3.

[0086] The inner magnetic pole assembly includes a shaft 41 and an inner magnetic pole 4 fixedly mounted to the shaft 41.

[0087] The inner magnetic pole 4 has an arc surface and is sequentially connected and attached to the outer wall of the shaft 41. The polarities of adjacent inner magnetic poles 4 are opposite.

[0088] One end of the shaft body 41 has a shaft hole, and the output shaft of the drive motor 1 is inserted into the shaft hole of the shaft body 41 and fixedly connected by the locking screw 8.

[0089] The external magnetic pole assembly includes a coupling output component 9 and an external magnetic pole 5 located within the coupling output component. The external magnetic pole 5 is fixedly installed with the coupling output component 9.

[0090] The outer magnetic pole 5 has an arc surface and is sequentially connected and attached to the inner wall of the coupling output component 9. The polarities of adjacent outer magnetic poles 5 are opposite.

[0091] The inner side of the bottom of the barrel-shaped part 301 has a groove 303, and the other end of the shaft 41 has a bearing I15 between it and the groove 303. The bearing I15 is installed in the groove 303.

[0092] With the support of bearing I15, drive motor 1 can drive the inner magnetic pole 4 to rotate in a relatively calibrated manner.

[0093] The barrel-shaped part 301 has an end shaft 304 on the outer side of the bottom. The outer diameter of the end shaft 304 is smaller than the outer diameter of the barrel-shaped part 301 to facilitate assembly with the outer magnetic pole assembly.

[0094] The coupling output component 9 includes a coupling barrel-shaped portion 91, with a coupling groove 92 on the inner side of the barrel bottom of the coupling barrel-shaped portion 91 and a coupling output shaft 93 on the outer side of the barrel bottom of the coupling barrel-shaped portion 91. A bearing III17 is provided between the end shaft 304 and the coupling groove 92. A bearing II16 is provided between the outer wall of the coupling barrel-shaped portion 91 and the inner wall of the outer cylinder portion 305. A positioning structure is provided on the inner wall of the outer cylinder portion 305 and the outer wall of the coupling barrel-shaped portion 91, and the positioning structure is connected to the bearing II16.

[0095] The external magnetic pole 5 and the coupling output component 9 are fixedly connected by a combination of interference fit and adhesive bonding.

[0096] Bearing II16 contacts the outer wall of the coupling barrel-shaped part 91. The inner ring of bearing III17 is connected to the outer wall of the end shaft 304, and the outer ring of bearing III17 is connected to the inner wall of the coupling groove 92.

[0097] Both bearings II16 and III17 support the coupling output element 9 in the radial direction.

[0098] The lower end of the coupling output component 9 is radially supported by bearing II16, and the upper end is radially supported by bearing III17, ensuring high coaxiality when the coupling output component 9 rotates.

[0099] The positioning structure includes a support step 18 on the inner wall of the outer cylinder 305. The support step 18 is connected to the bearing II16, and the bearing II16 is axially supported at its lower end by the support step 18 on the isolation sleeve 3.

[0100] The positioning structure includes a protrusion 911 on the outer wall of the coupling barrel-shaped part 91, and the bearing II16 is connected to the protrusion 911 to axially position the coupling output part 9.

[0101] The underwater light window cleaning device includes a sheath 19, which forms a cavity covering the outer magnetic pole assembly. The sheath 19 is connected to the outer cylindrical portion 305 of the isolation sleeve 3.

[0102] The sleeve 19 is used to limit the bearing II16 axially at the other end.

[0103] The sheath 19 has a through hole 191 through which at least part of the coupling output shaft 93 of the coupling output member 9 extends out of the sheath 19.

[0104] The sheath 19 is threadedly installed on the outer cylindrical portion 305 of the isolation sleeve 3. After the sheath is installed on the isolation sleeve 3, the edge 20 of the sheath 19 presses against the bearing II16, thus axially limiting the upper end of the bearing II16. Therefore, the bearing II16 is axially limited on the isolation sleeve 3. The lower edge 21 of the coupling output component 9 forms a baffle (protrusion 911), which contacts the lower side of the bearing II16. The baffle is pressed down by the lower side of the bearing II16, and the lower edge 21 of the coupling output component 9 cannot move upward due to the axial constraint of the bearing II16.

[0105] Bearing III17 is installed between the end shaft 304 of the isolation sleeve 3 and the coupling groove 92 of the coupling output component 9. A shaft retaining ring 22 is provided on the end shaft 304, and the bearing III17 is axially fixed by the shaft retaining ring 22. Therefore, the coupling output component 9 cannot move downward due to the axial constraint of the bearing III17.

[0106] The structural design of the isolation sleeve 3 and the coupling output component 9, as well as their assembly design with the bearing, makes the entire transmission assembly compact and highly coaxial. The coupling output component 9 has precise and reliable constraints in the radial and axial directions, providing high positioning accuracy during application. It can stably and tightly fit with the glass light window, effectively removing dirt films from the light window.

[0107] The cleaning assembly includes a brush handle 23, a flexible brush body 26, a brush handle end cap 24, and a screw 25.

[0108] The brush rod 23 is adjustablely mounted on the coupling output component 9.

[0109] The cleaning component 7 is fixedly installed on the coupling output shaft 93 of the coupling output component 9 by locking the nuts at both ends. This method gives the cleaning component 7 a certain axial adjustment function, which can be adjusted according to the position of the light window of the instrument body 40 to ensure that the light window surface is within the cleaning coverage range of the elastic brush body 26.

[0110] The brush rod 23 has a receiving cavity, and the brush rod 23 has an opening groove 27 that communicates with the receiving cavity. The elastic brush body 26 includes a mounting part and a brush body part. The mounting part is installed in the receiving cavity through the brush rod end cap 24 and the screw 25, and the brush body part extends out from the opening groove 27.

[0111] The mounting part is cylindrical, and the brush body includes a triangular prism. The brush body is made of a hydrophilic elastomer material with a hardness of 45HA-55HA.

[0112] During installation, the elastic brush body 26 applies a certain normal pressure to the contact interface. Under high underwater pressure, the elastic brush body 26 is subjected to water pressure. Because the elastomer material is isotropic, the pressure it experiences is the same in every direction of the structure; that is, the pressure at the contact interface between the elastic brush body 26 and the light window glass is equal to the underwater pressure. In the high-pressure environment of the deep sea, the greater water pressure can lead to greater contact pressure at the interface and greater friction during the wiping rotation, which is detrimental to the low-power application requirements of deep-sea equipment. To solve this problem, two effective methods are adopted:

[0113] (1) The elastic brush body 26 adopts an inverted triangular structure, which reduces the contact area between the elastic brush body 26 and the light window glass. Under the same contact pressure, the contact pressure between the interfaces is reduced, and the rotational friction force during wiping is reduced. At the same time, the inverted triangular structure can also improve the bending strength and support stiffness of the root of the elastic brush body during the swinging process.

[0114] (2) The elastic brush body 26 is made of a soft hydrophilic elastomer material, such as fluorosilicone material with a hardness of 45HA-55HA. Fluorosilicone has a small surface free energy and good affinity with water. According to the Stribek curve, there must be a thin interfacial water film of a certain thickness between the elastic brush body 26 and the light window. Considering the influence of the seawater environment, the elastic brush body and the light window are taken as a soft elastic fluid lubrication mode. Through calculation, the thickness of the water film formed between the fluorosilicone rubber and the glass is 0.1μm-1μm. The water film not only plays the role of normal support between the contact surfaces, but also plays the role of lubrication during the wiping motion, reducing the dynamic friction resistance between the elastomer brush and the light window. By designing and selecting elastomers and light window materials with different surface free energies, the interfacial tension between the elastomer brush, seawater, and light window is changed. This allows the elastomer brush to undergo a certain degree of micro-deformation during the process of minimum polarization of interfacial energy through the cohesive attraction of interfacial tension, thereby forming a thin water film of a certain size. This achieves the maximum cleaning effect of the light window while effectively driving the wiping motion, and ensures the light transmittance requirements of the light window are met.

[0115] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. An underwater light window cleaning device, comprising a driving motor, a transmission assembly and a cleaning assembly, characterized in that, The transmission assembly includes an inner magnetic pole assembly and an outer magnetic pole assembly; the cleaning assembly is mounted on the outer magnetic pole assembly. The underwater light window cleaning device includes a sealed chamber formed by a cabin body, an end cap, and an isolation sleeve; the end cap is sealed to the first end of the cabin body; the isolation sleeve includes a barrel-shaped part, an annular part located at the opening of the barrel-shaped part, and an outer cylindrical part located on the annular part, the outer cylindrical part being coaxially arranged with the barrel-shaped part, and the annular part being sealed to the second end of the cabin body; The drive motor is located inside the cabin, the inner magnetic pole assembly is located inside the isolation sleeve, the output shaft of the drive motor is fixedly connected to the inner magnetic pole assembly, and the inner magnetic pole assembly is rotatably connected to the barrel-shaped part of the isolation sleeve; the outer magnetic pole assembly is located outside the isolation sleeve and is rotatably connected to the outer cylindrical part and the barrel-shaped part of the isolation sleeve.

2. The underwater light window cleaning device according to claim 1, characterized in that, The inner magnetic pole assembly includes a shaft and an inner magnetic pole fixedly mounted to the shaft; the inner side of the bottom of the barrel-shaped part has a groove, a bearing I is provided between the end of the shaft and the groove, and an end shaft is provided on the outer side of the bottom of the barrel-shaped part, the outer diameter of the end shaft being smaller than the outer diameter of the barrel-shaped part; The external magnetic pole assembly includes a coupling output component and an external magnetic pole located within the coupling output component; the coupling output component includes a coupling barrel-shaped portion, the inner side of the barrel bottom of the coupling barrel-shaped portion has a coupling groove, a bearing III is provided between the end shaft and the coupling groove, and a bearing II is provided between the outer wall of the coupling barrel-shaped portion and the inner wall of the outer cylinder portion.

3. The underwater light window cleaning device of claim 2, wherein, The inner wall of the outer cylinder and the outer wall of the coupling barrel-shaped part have positioning structures, which are connected to the bearing II.

4. The underwater light window cleaning device of claim 1, wherein, The underwater light window cleaning device includes a protective sleeve that forms a cavity covering the outer magnetic pole assembly, and the protective sleeve is connected to the outer cylindrical portion of the isolation sleeve.

5. The underwater light window cleaning device of claim 4, wherein, A bearing II is provided between the outer magnetic pole assembly and the outer cylinder, and the sleeve is used to axially limit the bearing II.

6. The underwater light window cleaning device of claim 4, wherein, The sheath has a through hole, and the outer side of the bottom of the coupling barrel-shaped portion of the outer magnetic pole assembly has a coupling output shaft, at least a portion of which extends out of the sheath from the through hole.

7. The underwater light window cleaning device according to any one of claims 1-6, characterized in that, The cleaning assembly includes a brush rod, a flexible brush body, an end cap, and a screw. The brush rod is adjustablely mounted on the external magnetic pole assembly. The brush rod has a receiving cavity and an opening slot communicating with the receiving cavity. The flexible brush body includes a mounting part and a brush body part. The mounting part is mounted in the receiving cavity through the end cap and the screw, and the brush body part extends out of the opening slot.

8. The underwater light window cleaning device of claim 7, wherein, The mounting part is cylindrical, the brush body part includes a triangular prism, and the brush body part is made of a hydrophilic elastomer material with a hardness of 45HA-55HA.

9. An underwater instrument having a light window, characterized in that The instrument includes: Mounting bracket; The instrument body is mounted on the mounting bracket, and the instrument body has a light window; The light window cleaning device according to any one of claims 1-8 is installed on the mounting bracket, and the light window cleaning device is used to clean the light window.

10. The underwater instrument with a light window according to claim 9, characterized in that, The light window cleaning device and the instrument body are located on both sides of the mounting bracket. The light window cleaning device and the instrument body are provided with clamping grooves. The light window cleaning device and the instrument body are respectively mounted on the mounting bracket by clamps or cable ties. The mounting bracket is formed with at least one pair of cleaning device holding arms for holding the light window cleaning device and at least one pair of instrument holding arms for holding the instrument body.

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