Automatic cleaning device for radiator of fan gear box

Abstract

The utility model belongs to the technical field of wind power generation, particularly relates to an automatic cleaning device for a radiator of a fan gear box, and aims to solve the problems of single cleaning mode and poor synergism of cleaning and drying functions of the conventional cleaning device. The driving adjusting assembly drives the cleaning spray head to move in the transverse direction and the longitudinal direction, it is guaranteed that no dead corner exists in cleaning coverage, the linear jet flow channel and the spiral atomization channel are arranged in the cleaning spray head, the cylindrical piston is arranged, and the cylindrical piston can conduct spraying according to the pressure change of inlet water or inlet air. The device is automatically switched among a high-pressure position state, a medium-pressure position state and a low-pressure position state, and full-process automatic collaborative operation of high-pressure decontamination, medium-pressure cleaning and rinsing, low-pressure atomization and pre-wetting, subsequent high-pressure gas jet penetrating drying, medium-pressure gas balanced air drying and low-pressure gas diffusion draining is achieved.

Description

Technical Field

[0001] This utility model relates to a cleaning device, specifically an automatic cleaning device for a wind turbine gearbox radiator, belonging to the field of wind power generation technology. Background Technology

[0002] The gearbox radiator is a crucial component of wind turbine generators, and its excellent heat dissipation performance is key to ensuring the continuous and stable operation of the turbine. During wind turbine operation, the gearbox generates a significant amount of heat, which requires effective cooling by the radiator. However, because wind turbine generators are typically located in complex environments such as the outdoors or coastal areas, the radiator surface easily accumulates contaminants such as dust, oil, insects, and salt spray. These contaminants severely hinder the heat exchange efficiency of the radiator fins, leading to abnormally high gearbox oil temperatures, which in turn triggers power-limited operation or even shutdown protection, directly impacting power generation and economic benefits. Currently, cleaning and maintaining wind turbine gearbox radiators has become an important part of the daily operation and maintenance of wind farms. However, traditional cleaning methods and existing automated cleaning devices still have many limitations, failing to achieve an ideal balance between efficiency, effectiveness, and adaptability.

[0003] In existing technologies, such as the cleaning device and method for a wind turbine nacelle disclosed in CN116123048A, a rainwater collector is installed on the outside of the nacelle shell, and a position adjustment device consisting of a track, a movable base, an electric telescopic rod, and a rotating component is used to drive the nozzles to clean the radiator. While this design allows the nozzles to move horizontally and vertically and integrates a drying device, its nozzle function is relatively limited, lacking adaptive adjustment capabilities for different types and levels of contamination. For example, when dealing with viscous oil stains adhering to the radiator surface, a high-pressure concentrated jet is required for impact; while for routine dust removal or pre-wetting, a large-area atomized water flow is needed. The nozzles in this prior art cannot intelligently switch between multiple cleaning modes according to actual working conditions, limiting their cleaning effect and efficiency. Furthermore, this device separates the cleaning and drying functions into a spray nozzle and a separate drying unit, resulting in poor coordination between the two. This may lead to insufficient continuity in the cleaning process and affect overall operation and maintenance efficiency. Another example is a novel wind turbine gearbox radiator cleaning device disclosed in announcement number CN217017659U, which employs a semi-automated cleaning approach. This device includes a wastewater collection basin, a water storage tank, a spray pipe, and detachable brushes installed on its front and rear sides. Workers hold the handle at the top of the spray pipe and pull it back and forth on the side of the radiator to simultaneously brush and rinse. While this design is simple in structure and low in cost, and the brushes prevent water splashing to some extent, it still relies on manual operation, resulting in low cleaning efficiency. The cleaning effect is greatly affected by the operator's skill level and physical condition, making it difficult to guarantee consistency. More importantly, when dealing with the numerous wind turbines in a large wind farm, this semi-automated device requires a significant amount of manpower, and manual operation at heights and in confined spaces also poses safety hazards. The device also lacks intelligent drying capabilities, making it impossible to form a complete closed-loop cleaning-drying process.

[0004] In summary, existing fan gearbox radiator cleaning devices, whether automated or semi-automated, fail to effectively address the following core issues: First, the nozzles have limited functionality and cannot adaptively switch between high-pressure jet, medium-pressure mixing, or low-pressure atomization cleaning modes based on the characteristics of contaminants (such as stubborn oil stains and ordinary dust), resulting in poor cleaning effects or resource waste. Second, the cleaning and drying functions are independent and lack coordination, failing to achieve an efficient and seamless intelligent workflow, thus impacting overall operation and maintenance efficiency. Third, some devices still heavily rely on manual operation, leading to low cleaning efficiency, unstable results, and safety risks. Utility Model Content

[0005] This invention provides an automatic cleaning device for fan gearbox radiators to address the problems of existing cleaning devices having a single cleaning mode and poor coordination between cleaning and drying functions.

[0006] The present invention achieves the above objectives through the following technical solution: an automatic cleaning device for a fan gearbox radiator, comprising a base plate, a drive adjustment component and a cleaning nozzle, wherein the drive adjustment component is mounted on the base plate and the cleaning nozzle is connected to the upper end of the drive adjustment component, the drive adjustment component has two drive adjustment modes, namely horizontal and vertical, and the cleaning nozzle can spray cleaning water and air drying air.

[0007] The drive adjustment assembly includes a drive slide rail and a telescopic rod. A tapered slider is connected to the bottom end of the telescopic rod. The drive slide rail has a tapered groove, and the tapered slider is movably installed in the tapered groove. The cleaning nozzle is connected to the movable top end of the telescopic rod in a downward tilted position.

[0008] The cleaning nozzle has multiple linear jet channels and multiple spiral atomization channels inside. It also has a movable chamber with a cylindrical piston elastically installed inside. A liquid storage tank and an air purification box are installed on the bottom plate. Both the liquid storage tank and the air purification box are connected to the tail end of the cleaning nozzle. The cylindrical piston has three position states based on different pressures: completely closed to the linear jet channels, partially closed to both the linear jet channels and the spiral atomization channels, and completely closed to the spiral atomization channels.

[0009] As a further embodiment of this utility model: rollers are fixedly connected to the four corners of the lower plate of the base plate, and the liquid storage tank and the air purification box are fixedly connected to the upper plate of the base plate. A water collection tank and a wastewater storage tank are also fixedly connected to the base plate. The water collection tank is located directly below the spray area of ​​the cleaning nozzle. A drain pipe is connected between the water collection tank and the wastewater storage tank, and a drain pump is installed on the body of the drain pipe.

[0010] As a further improvement of this utility model: the rail body of the drive slide rail is also provided with a rack mounting groove, the rack mounting groove is located on one side of the conical slide groove, the groove wall of the rack mounting groove is connected to a drive rack, the bottom end of the telescopic rod is fixedly connected to a drive motor arranged in a vertical inverted position, the motor shaft of the drive motor is coaxially fixedly connected to a gear plate, the gear plate is movably installed in the rack mounting groove, and the gear plate is meshed with the drive rack.

[0011] As a further improvement of this utility model: the side and bottom edges of the conical slider are embedded with limiting balls, and the limiting balls are in rolling contact with the inner walls of the two sides of the conical groove and the bottom surface of the groove.

[0012] As a further improvement of this utility model: the front end of the cleaning nozzle is threadedly connected to a front cap, and a flow-stabilizing screen is movably held inside the front cap.

[0013] As a further embodiment of this utility model: the movable cavity of the cleaning nozzle comprises two parts: a cylindrical cavity and a conical cavity. The cylindrical piston comprises two parts: a cylindrical body and a conical body. Part of the cylindrical body of the cylindrical piston is movably inserted into the cylindrical cavity of the movable cavity. The input end of the linear jet channel is located in the cylindrical cavity of the movable cavity. The cylindrical body of the cylindrical piston has multiple flow holes, and each flow hole corresponds to one of the input ends of the linear jet channel. The input end of the spiral atomization channel is located in the conical cavity of the movable cavity. The rear end of the cleaning nozzle has a docking groove, and an electromagnetic three-way valve is connected in the docking groove. The other two input ends of the electromagnetic three-way valve are connected to the liquid storage tank and the air purification box, respectively.

[0014] As a further improvement of this utility model: a square limiting groove is also provided inside the cleaning nozzle. The square limiting groove is located on the cavity wall of the movable cavity near the front end of the spray. A square limiting rod is connected to the side of the cylindrical piston near the front end of the spray. A spring is sleeved on the body of the square limiting rod, and the front end of the square limiting rod is movably inserted into the square limiting groove. The two ends of the spring abut against the movable cavity and the cylindrical piston.

[0015] As a further improvement of this utility model: a liquid guide pipe is connected between the liquid storage tank and the cleaning nozzle, and an inlet pump is installed on the body of the liquid guide pipe. The inlet pump is equipped with three liquid pressure delivery modes: high pressure, medium pressure and low pressure.

[0016] As a further improvement of this utility model: an air duct is connected between the air purification box and the cleaning nozzle, and an air pump is installed on the body of the air duct. The air pump is equipped with three gas pressure delivery modes: high pressure, medium pressure and low pressure.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model is equipped with a base plate, a drive adjustment component, and a cleaning nozzle. The drive adjustment component has two drive adjustment modes: horizontal and vertical. The cleaning nozzle can spray cleaning water and air drying air. The base plate provides a stable installation platform for each component. The design of the cleaning nozzle being located on the upper part of the drive adjustment component allows it to obtain the optimal working position and coverage. The dual-mode drive capability of the drive adjustment component enables the cleaning nozzle to be accurately positioned in a two-dimensional plane, ensuring that there are no dead angles in the cleaning coverage. The cleaning nozzle has the dual functions of liquid cleaning and gas drying, and can continuously complete cleaning and drying operations in a complete process flow, significantly improving operation and maintenance efficiency and reducing equipment configuration requirements.

[0019] 2. The drive adjustment component of this utility model includes a drive slide rail and a telescopic rod. The bottom end of the telescopic rod is connected to a conical slider. The drive slide rail has a conical groove. The conical slider is movably placed in the conical groove. The drive slide rail and the telescopic rod are responsible for the lateral and longitudinal displacement adjustment, respectively. The cooperation between the conical slider and the conical groove has the functions of self-centering and anti-dropping, which can automatically eliminate movement gaps and ensure the positioning accuracy and stability of the system under high-frequency use.

[0020] 3. The cleaning nozzle of this utility model has multiple linear jet channels and multiple spiral atomization channels inside. The cleaning nozzle also has a movable chamber inside, within which a cylindrical piston is elastically installed. The tail end of the cleaning nozzle is configured to selectively connect to a liquid storage tank or an air purification box. The cylindrical piston has three position states based on pressure: completely closed to the linear jet channels, partially closed to both the linear jet channels and the spiral atomization channels, and completely closed to the spiral atomization channels. The dual-channel design of the linear jet channels and spiral atomization channels... The linear jet provides high-impact, concentrated cleaning power. The spiral atomization channel generates a fine mist field that covers a large area evenly. The elastically set cylindrical piston in the movable chamber acts as a flow channel switching valve, automatically adjusting to three positions based on the different water or air pressures. This corresponds to three working modes: high-pressure jet cleaning, medium-pressure mixed cleaning, and low-pressure atomization cleaning / pre-wetting. The cleaning nozzle can be optionally connected to a liquid storage tank or an air purification box, allowing the cleaning nozzle to spray both cleaning fluid and drying gas. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the connection structure between the cleaning nozzle, the liquid storage tank, and the air purification box of this utility model;

[0023] Figure 3 This is a schematic diagram of the connection structure between the base plate and the water collection tank of this utility model;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the drive slide rail of this utility model;

[0025] Figure 5 This is a schematic cross-sectional view of the connection between the drive slide rail and the telescopic rod of this utility model.

[0026] Figure 6 This is a schematic diagram of the cleaning nozzle structure of this utility model;

[0027] Figure 7 This is a cross-sectional view of the cleaning nozzle of this utility model in a disassembled state.

[0028] Figure 8 This is a schematic diagram of the spiral atomization channel distribution structure of this utility model;

[0029] Figure 9 This is a schematic diagram of the cross-sectional structure of the cleaning nozzle of this utility model in the low-pressure spray state;

[0030] Figure 10 This is a schematic diagram of the cross-sectional structure of the cleaning nozzle of this utility model under medium-pressure spraying conditions;

[0031] Figure 11 This is a cross-sectional structural diagram of the cleaning nozzle of this utility model in the high-pressure spray state.

[0032] In the diagram: 1. Base plate; 11. Roller; 2. Drive slide rail; 21. Conical slide groove; 22. Rack mounting groove; 23. Drive rack; 3. Telescopic rod; 31. Drive motor; 32. Gear plate; 33. Conical slider; 34. Limiting ball; 4. Cleaning nozzle; 41. Front cap; 42. Flow stabilizing screen; 43. Linear jet channel; 44. Spiral atomization channel; 45. Movable chamber; 46. Cylindrical piston; 47. Flow hole; 48. Square limiting rod; 49. Spring; 410. Connecting groove; 411. Square limiting groove; 412. Electromagnetic three-way valve; 5. Liquid storage tank; 51. Liquid guide pipe; 52. Liquid inlet pump; 6. Air purification box; 61. Air guide pipe; 62. Air pump; 7. Water collection tank; 71. Wastewater storage tank; 72. Drain pipe; 73. Drain pump. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] like Figures 1 to 11As shown, an automatic cleaning device for a fan gearbox radiator includes a base plate 1, a drive adjustment component, and a cleaning nozzle 4. The drive adjustment component is mounted on the base plate 1, and the cleaning nozzle 4 is connected to the upper end of the drive adjustment component. The drive adjustment component has two drive adjustment modes: horizontal and vertical. The cleaning nozzle 4 can spray cleaning water and air drying. The base plate 1 serves as the supporting foundation for the entire device, providing a stable installation platform for each component. The design of the cleaning nozzle 4 being positioned on the upper end of the drive adjustment component allows it to obtain the optimal working position and coverage. The dual-mode drive capability of the drive adjustment component, with its horizontal and vertical modes, enables precise coordinate positioning of the cleaning nozzle 4 in a two-dimensional plane, ensuring thorough cleaning coverage. The cleaning nozzle 4 has both liquid cleaning and gas drying functions, enabling continuous cleaning and drying operations in a complete process.

[0036] The drive adjustment assembly includes a drive slide rail 2 and a telescopic rod 3. A tapered slider 33 is connected to the bottom end of the telescopic rod 3. The drive slide rail 2 has a tapered groove 21, within which the tapered slider 33 is movably positioned. The cleaning nozzle 4 is connected to the movable top end of the telescopic rod 3 at a downward angle. The drive slide rail 2 and the telescopic rod 3 are responsible for adjusting the lateral and longitudinal displacements, respectively. The cooperation between the tapered slider 33 and the tapered groove 21 provides self-centering and anti-detachment functions, automatically eliminating movement gaps. The downward-sloping installation of the cleaning nozzle 4 ensures that its spray axis forms an optimal alignment with the radiator surface. The impact angle maximizes the efficiency of cleaning kinetic energy conversion and ensures that the rinsing waste liquid flows naturally to the water collection area, avoiding residue between the heat sinks. It should be noted that the telescopic rod 3 can be a multi-stage free telescopic rod disclosed in CN103174716B. The length of the telescopic rod can be stretched according to the needs of the occasion. When the stretching length is determined, the action stops and the positioning spring engages with the sawtooth stage to automatically lock. During the recovery, multiple sections can be recovered at the same time by controlling the external rotating parts. After the operation is completed, the telescopic rod automatically returns to its original position to realize the longitudinal adjustment of the cleaning nozzle 4.

[0037] The cleaning nozzle 4 has multiple linear jet channels 43 and multiple spiral atomization channels 44 inside. The cleaning nozzle 4 also has a movable chamber 45, within which a cylindrical piston 46 is elastically installed. A liquid storage tank 5 and an air purification box 6 are mounted on the base plate 1, both connected to the tail end of the cleaning nozzle 4. The cylindrical piston 46 has three position states depending on the pressure: completely closed to the linear jet channels 43, partially closed to both the linear jet channels 43 and the spiral atomization channels 44, and completely closed to the spiral atomization channels 44. It should be noted that all electrical components of this cleaning device are electrically connected to an external power source. The linear jet channels 43... The dual-channel design of the 3 and spiral atomization channel 44 provides a high-impact concentrated cleaning capability through the linear jet channel 43 and the spiral atomization channel 44, which generates a large-area uniformly covered fine mist field. The cylindrical piston 46, which is elastically set in the movable cavity 45, acts as a flow channel switching valve. Based on the different water or air pressures, it can automatically adjust to three position states, corresponding to three working modes: high-pressure jet cleaning, medium-pressure mixed cleaning, and low-pressure atomization cleaning / pre-wetting. The tail end of the cleaning nozzle 4 can be connected to the liquid storage tank 5 or the air purification box 6, so that the cleaning nozzle 4 can spray both cleaning liquid and drying gas.

[0038] Example 2

[0039] Improvements based on Example 1:

[0040] like Figure 1 and Figure 3As shown, rollers 11 are fixedly connected to the four corners of the lower surface of the base plate 1. The rollers 11 can provide stable support for the base plate 1, enabling the entire device to move freely. The liquid storage tank 5 and the air purification box 6 are both fixedly connected to the upper surface of the base plate 1. The liquid storage tank 5 serves as a storage container for the liquid cleaning agent, and its capacity is designed to meet the needs of a single operation. A water collection tank 7 and a wastewater storage tank 71 are also fixedly connected to the base plate 1. The water collection tank 7 is located directly below the spray area of ​​the cleaning nozzle 4. A drain pipe 72 connects the water collection tank 7 and the wastewater storage tank 71, and a drain pump 73 is installed on the body of the drain pipe 72. It should be noted that the air purification box 6 can adopt the type of air purification device disclosed in publication number CN112337219A. The Nest Air Purification Box includes a box body, a filter screen, a flat plate, and flexible baffles. Several first openings are provided on the side wall of the box body. A horizontal filter screen is installed inside the box body. The filter screen is made of stainless steel wire and has a capillary loose structure, which can effectively filter dust in the air and purify the air. The filter screen inside the air purification box 6 ensures the cleanliness of the output gas, removes particulate pollutants in the air, ensures the cleanliness of the transported gas, and avoids secondary pollution. The water collection tank 7 ensures the effective collection of sprayed waste liquid, and the water collection tank 7 is connected to the wastewater storage tank 71 through the drain pipe 72 to form a waste liquid transportation channel. The drain pump 73 ensures that the waste liquid can be quickly and thoroughly transferred to the wastewater storage tank 71.

[0041] like Figure 1 , Figure 4 and Figure 5 As shown, the drive slide rail 2 also has a rack mounting groove 22. The rack mounting groove 22 is located on one side of the conical slide groove 21. The groove wall of the rack mounting groove 22 is connected to the drive rack 23. The rack mounting groove 22 provides a dedicated space for the transmission element. Its parallel layout with the conical slide groove 21 optimizes the structural strength of the slide rail and ensures that the motion axis of the transmission and guidance are consistent. The bottom end of the telescopic rod 3 is fixedly connected to a drive motor 31 that is arranged vertically upside down. The motor shaft of the drive motor 31 is fixedly connected to a gear disk 32 on the same axis. The gear disk 32 is movably installed in the rack mounting groove 22 and meshes with the drive rack 23. The movable installation of the gear disk 32 in the rack mounting groove 22 ensures good meshing conditions of the gear and rack pair. By precisely controlling the meshing gap between the gear disk 32 and the drive rack 23, smooth transmission is achieved.

[0042] Furthermore, the sides and bottom of the tapered slider 33 are embedded with limiting balls 34, and the limiting balls 34 roll in contact with the inner walls of both sides of the tapered groove 21 and the bottom surface of the groove. The limiting balls 34 convert sliding friction into rolling friction, ensuring that the tapered slider 33 maintains the correct posture during movement. The continuous contact pressure between the balls and the surface of the groove ensures the smoothness of movement and avoids excessive contact stress.

[0043] like Figure 1 , Figures 6 to 11 As shown, the front end of the cleaning nozzle 4 is threadedly connected to a front cap 41, and a flow stabilizing screen 42 is movably locked inside the front cap 41. The flow stabilizing screen 42 is installed inside the front cap 41 by a movable locking method, forming the final fluid shaping, which can effectively break the large-scale eddies formed in the flow channel and transform the uneven turbulence into a uniform laminar flow. Whether it is liquid cleaning or gas drying, a more uniform and concentrated coverage effect can be obtained.

[0044] Furthermore, the movable cavity 45 of the cleaning nozzle 4 comprises a cylindrical cavity and a conical cavity, and the cylindrical piston 46 comprises a cylindrical body and a conical body. A portion of the cylindrical body of the cylindrical piston 46 is movably inserted into the cylindrical cavity of the movable cavity 45. The movable cavity 45 adopts a composite design of cylindrical and conical shapes. The conical cavity achieves gradual adjustment of the flow channel through a gradually changing contact area. The corresponding shape design of the cylindrical piston 46 ensures a perfect fit with the cavity. The sliding of its cylindrical body within the cylindrical cavity ensures both flexibility of movement and provides the necessary sealing effect. The input end of the linear jet channel 43 is located in the cylindrical cavity of the movable cavity 45. The cylindrical body of the cylindrical piston 46 has multiple flow holes 47, and each flow hole 47 corresponds to one of the input ends of the linear jet channel 43. The spiral atomizing channel... The input end of channel 44 is located in the conical cavity of the movable chamber 45. The input end of linear jet channel 43 is arranged in a ring around the cylindrical cavity, corresponding to the flow hole 47 on the cylindrical piston 46, forming a flow channel connection. When the flow hole 47 is aligned with the input end of linear jet channel 43, the fluid can pass through efficiently. When the cylindrical piston 46 moves and causes misalignment, the flow channel is gradually closed. The input end of spiral atomizing channel 44 is located in the conical cavity, and the guiding characteristics of the conical surface are used to realize the gradual opening and closing of the flow channel. The rear end of the cleaning nozzle 4 is provided with a docking groove 410, and an electromagnetic three-way valve 412 is connected in the docking groove 410. The other two input ends of electromagnetic three-way valve 412 are connected to the liquid storage tank 5 and the air purification box 6, respectively. Electromagnetic three-way valve 412 realizes the automatic switching between cleaning liquid and drying gas, so that the device can select the working medium according to the operation requirements.

[0045] Furthermore, a square limiting groove 411 is provided inside the cleaning nozzle 4. The square limiting groove 411 is located on the cavity wall of the movable cavity 45 near the front end of the spray. A square limiting rod 48 is connected to the side of the cylindrical piston 46 near the front end of the spray. The square limiting groove 411 and the square limiting rod 48 form an anti-rotation mechanism, which restricts the circumferential rotation of the cylindrical piston 46 during the movement, ensuring that the flow hole 47 always maintains the correct relative position with the linear jet channel 43. A spring 49 is sleeved on the body of the square limiting rod 48, and the front end of the square limiting rod 48 is movably inserted into the square limiting groove 411. The two ends of the spring 49 abut between the movable cavity 45 and the cylindrical piston 46. The spring 49 provides a stable reset force source. When the system pressure decreases, the spring force drives the cylindrical piston 46 to accurately return to the initial position, ensuring the timeliness and consistency of mode switching.

[0046] like Figure 1 and Figure 2 As shown, a liquid guide pipe 51 connects the liquid storage tank 5 and the cleaning nozzle 4. An inlet pump 52 is installed on the body of the liquid guide pipe 51, and the inlet pump 52 is equipped with three liquid pressure delivery modes: high pressure, medium pressure, and low pressure. The liquid guide pipe 51 serves as a fluid channel connecting the liquid storage tank 5 and the cleaning nozzle 4. The three-stage pressure mode of the inlet pump 52 can output liquid flows with different characteristics. The high pressure mode generates a jet with strong impact force to remove stubborn oil stains; the medium pressure mode provides a balanced cleaning effect and energy consumption; and the low pressure mode generates a gentle atomized flow field for fine cleaning or pre-wetting. If necessary, the radiator to be cleaned can also be manually turned over to ensure a thorough cleaning of the radiator.

[0047] like Figure 1 and Figure 2 As shown, an air duct 61 connects the air purification box 6 and the cleaning nozzle 4. An air pump 62 is installed on the body of the air duct 61, and the air pump 62 is equipped with three gas pressure delivery modes: high pressure, medium pressure, and low pressure. The air duct 61 connects the air purification box 6 and the cleaning nozzle 4, forming a closed gas channel. The air purification box 6 ensures the cleanliness of the output gas and removes particulate pollutants from the air. The three-level pressure mode of the air pump 62 can generate airflow fields with different characteristics. The high-pressure mode generates a concentrated air jet to penetrate deep heat sinks and expel stubborn water droplets; the medium-pressure mode generates a balanced beam, taking into account both coverage and drying efficiency; and the low-pressure mode forms a gentle diffused air curtain for large-area initial drainage. The multi-mode gas control works in conjunction with the flow characteristics of the cleaning nozzle 4 to realize the entire drying process from coarse drying to fine drying, ensuring rapid drying of the radiator after cleaning.

[0048] Working principle: The device moves to the working position and is fixed by the rollers 11 at the bottom of the base plate 1. The drive adjustment component is started, and its drive motor 31 drives the toothed disc 32 to rotate. The toothed disc 32 meshes with the drive rack 23 fixed in the rack mounting groove 22 of the drive slide rail 2, thereby driving the entire telescopic rod 3 assembly to move laterally along the drive slide rail 2. The telescopic rod 3 itself can extend and retract longitudinally. The tapered slider 33 at its bottom end is embedded with a limiting ball 34 to ensure the stability of the lateral movement. Through the combination of lateral and longitudinal movements, multi-directional cleaning can be achieved.

[0049] During cleaning operations, the electromagnetic three-way valve 412 switches to the state connecting to the storage tank 5, and the inlet pump 52 starts, pumping the cleaning fluid into the cleaning nozzle 4 through the guide pipe 51. The cleaning fluid enters the movable chamber 45 inside the cleaning nozzle 4 and acts on the cylindrical piston 46. The inlet pump 52 has three working modes: high pressure, medium pressure, and low pressure. In high pressure mode, the liquid pressure pushes the cylindrical piston 46 to a specific position against the elastic force of the spring 49, completely sealing the inlet of the spiral atomization channel 44. At the same time, the flow hole 47 on the cylindrical piston 46 is completely aligned with the inlet of the linear jet channel 43, and all the cleaning fluid passes through the linear jet channel 43 to form a condensed high-pressure jet to impact stubborn oil stains. In medium pressure mode, the pressure moves the cylindrical piston 46 to the middle position, at which time the flow hole 47 is partially closed. The inlet of the linear jet channel 43 is partially covered, and the inlet of the spiral atomizing channel 44 is also partially opened. The cleaning fluid is split, with one part forming a linear jet and the other part forming an atomized flow. The two are mixed after being sprayed out to achieve balanced cleaning. When in low-pressure mode, the liquid pressure is not enough to completely overcome the elastic force of the spring 49. The cylindrical piston 46 is in or close to the initial position under the action of the spring 49. At this time, the inlet of the linear jet channel 43 is completely closed by the cylindrical body of the cylindrical piston 46, while the inlet of the spiral atomizing channel 44 is fully open. The cleaning fluid is all formed into a fine water mist through the spiral atomizing channel 44 for pre-wetting or gentle dust removal. The sprayed cleaning fluid and the dirt and wastewater washed off are collected by the water collection tank 7 directly below and discharged into the wastewater storage tank 71 through the drain pipe 72 under the action of the drain pump 73.

[0050] After the cleaning process is completed, the device automatically switches to the drying process. The electromagnetic three-way valve 412 switches to the state of connecting to the air purification box 6, and the air pump 62 starts. The air pump 62 also has three output modes: high pressure, medium pressure, and low pressure. The purified dry gas enters the cleaning nozzle 4 through the air guide pipe 61. The gas also acts on the cylindrical piston 46, and repeats the above three flow channel switching modes according to the air pressure. The high pressure gas forms a focused jet to penetrate the gaps of the heat sink and blow away stubborn water droplets; the medium pressure gas forms a mixed airflow, which takes into account both coverage and penetration, and is used in the main drying stage; the low pressure gas forms a large-area diffusion air curtain through the spiral atomization channel 44 for preliminary desiccation and cooling. The entire cleaning and drying process does not require manual intervention and realizes fully automated, intelligent and efficient operation and maintenance of the fan gearbox radiator from cleaning to drying.

[0051] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fan gear box radiator automatic cleaning device, comprising a bottom plate (1), a drive adjusting assembly and a cleaning spray head (4), characterized in that: The driving adjusting assembly is installed on the bottom plate (1), the cleaning spray head (4) is connected to the upper end of the driving adjusting assembly, the driving adjusting assembly has two driving adjusting modes of transverse and longitudinal directions, and the cleaning spray head (4) can spray cleaning water and air drying flow. The driving adjusting assembly comprises a driving sliding rail (2) and a telescopic rod (3), the bottom end of the telescopic rod (3) is connected with a conical sliding block (33), the driving sliding rail (2) is provided with a conical sliding groove (21), the conical sliding block (33) is movably arranged in the conical sliding groove (21), and the cleaning spray head (4) is connected to the movable top end of the telescopic rod (3) in a downward inclined manner. A plurality of linear jet flow channels (43) and a plurality of spiral atomization channels (44) are arranged in the cleaning spray head (4), and a movable cavity (45) is further arranged in the cleaning spray head (4), a cylindrical piston (46) is elastically arranged in the movable cavity (45), the bottom plate (1) is provided with a liquid storage tank (5) and an air purification box (6), the liquid storage tank (5) and the air purification box (6) are connected with the tail end of the cleaning spray head (4), and the cylindrical piston (46) has three position states of completely closing the linear jet flow channel (43), simultaneously semi-closing the linear jet flow channel (43) and the spiral atomization channel (44) and completely closing the spiral atomization channel (44) based on different pressures.

2. The fan gear box radiator automatic cleaning device of claim 1, wherein: Rollers (11) are fixedly connected to the four corners of the lower plate surface of the bottom plate (1), the liquid storage tank (5) and the air purification box (6) are fixedly connected to the upper plate surface of the bottom plate (1), and a water collecting tank (7) and a waste water storage tank (71) are further fixedly connected to the bottom plate (1), the water collecting tank (7) is located directly below the spraying area of the cleaning spray head (4), a drain pipe (72) is arranged between the water collecting tank (7) and the waste water storage tank (71), and a drain pump (73) is arranged on the pipe body of the drain pipe (72).

3. The fan gear box radiator automatic cleaning device of claim 1, wherein: A rack arranging groove (22) is further arranged in the rail body of the driving sliding rail (2), the rack arranging groove (22) is located on one side of the conical sliding groove (21), the groove wall of the rack arranging groove (22) is connected with a driving rack (23), the bottom end of the telescopic rod (3) is fixedly connected with a driving motor (31) arranged in an inverted vertical manner, the motor shaft of the driving motor (31) is fixedly connected with a gear disc (32) in a coaxial manner, the gear disc (32) is movably arranged in the rack arranging groove (22), and the gear disc (32) is in meshing connection with the driving rack (23).

4. The fan gear box radiator automatic cleaning device of claim 3, wherein: The side edges and the bottom edge of the conical sliding block (33) are embedded with limiting balls (34), and the limiting balls (34) are in rolling contact with the inner walls and the bottom surface of the conical sliding groove (21).

5. The fan gear box radiator automatic cleaning device of claim 1, wherein: A front cover cap (41) is threadedly connected to the spraying front end of the cleaning spray head (4), and a flow stabilizing screen (42) is movably arranged in the front cover cap (41).

6. The fan gear box radiator automatic cleaning device of claim 5, wherein: The movable cavity (45) of the cleaning spray head (4) comprises a cylindrical cavity body and a conical cavity body, the cylindrical piston (46) comprises a cylindrical barrel and a conical barrel, and part of the cylindrical barrel of the cylindrical piston (46) is movably inserted into the cylindrical cavity body of the movable cavity (45), the input end of the linear jet channel (43) is arranged at the cylindrical cavity body of the movable cavity (45), the cylindrical barrel of the cylindrical piston (46) is provided with a plurality of flow holes (47), and the flow holes (47) are arranged one by one corresponding to the input end of the linear jet channel (43), the input end of the spiral atomizing channel (44) is arranged at the conical cavity body of the movable cavity (45), the rear end of the cleaning spray head (4) is provided with a butt joint groove (410), the butt joint groove (410) is communicated with an electromagnetic three-way valve (412), and the other two input ends of the electromagnetic three-way valve (412) are respectively communicated with the liquid storage tank (5) and the air purification box (6).

7. The fan gear box radiator automatic cleaning device of claim 6, wherein: The cleaning spray head (4) is further provided with a square limiting groove (411), the square limiting groove (411) is arranged at the cavity wall of the movable cavity (45) near the front end of the spray, the side of the cylindrical piston (46) near the front end of the spray is connected with a square limiting rod (48), the rod body of the square limiting rod (48) is provided with a spring (49), and the front end of the square limiting rod (48) is movably inserted into the square limiting groove (411), and the two ends of the spring (49) abut against the movable cavity (45) and the cylindrical piston (46).

8. The fan gear box radiator automatic cleaning device of claim 1, wherein: The liquid storage tank (5) and the cleaning spray head (4) are communicated with a liquid guide pipe (51), the liquid guide pipe (51) is provided with a liquid inlet pump (52), and the liquid inlet pump (52) is provided with three liquid pressure conveying modes of high pressure, medium pressure and low pressure.

9. The fan gear box radiator automatic cleaning device of claim 1, wherein: The air purification box (6) and the cleaning spray head (4) are communicated with an air guide pipe (61), the air guide pipe (61) is provided with an air pump (62), and the air pump (62) is provided with three air pressure conveying modes of high pressure, medium pressure and low pressure.

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