Self-cleaning ultraviolet device

Abstract

The utility model discloses a self-cleaning ultraviolet device which is composed of an ultraviolet radiation unit and a cleaning unit. The ultraviolet radiation unit is responsible for disinfecting a water body and comprises a shell, an ultraviolet light source and a quartz sleeve capable of realizing self-rotation; and the cleaning unit automatically delivers cleaning liquid through a circulating pipe and a dosing container to wash the quartz sleeve, and meanwhile, the self-rotation of the quartz sleeve is beneficial to enhancing the cleaning efficiency and the cleaning effect. By means of the automatic cleaning function of the device, the manual maintenance requirement is reduced, the maintenance cost is reduced, meanwhile, by means of the design, the device not only improves the water treatment efficiency, but also ensures long-term stable operation and water body treatment safety.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment technology, and specifically relates to a self-cleaning ultraviolet device. Background Technology

[0002] Ultraviolet (UV) devices are widely used in medical, scientific research, food processing, and water treatment fields. Their core components include UV lamps and quartz sleeves surrounding the lamps. However, over long-term use, inorganic scale and organic matter accumulate on the outside of the quartz sleeve, reducing UV transmittance and ultimately affecting the device's effectiveness. Existing cleaning methods typically require manual operation and physical friction, which is time-consuming, labor-intensive, and wears down the quartz sleeve. The cleaning cycle and effectiveness are inconsistent, and frequent disassembly can shorten the device's lifespan. Therefore, how to clean UV devices efficiently and quickly is a pressing issue that needs to be addressed. Utility Model Content

[0003] To address the problem that cleaning the quartz sleeve of existing ultraviolet (UV) devices is complicated and can shorten the device's lifespan due to scaling, this application aims to provide a self-cleaning UV device. This device achieves automatic circulation cleaning of the quartz sleeve through an external circulation pipe design, and automatically enhances cleaning through the self-rotation function of the quartz sleeve, thereby effectively overcoming the cleaning difficulties.

[0004] In one aspect of this application, a self-cleaning ultraviolet (UV) device is provided, comprising a UV radiation unit and a cleaning unit. The UV radiation unit includes a housing, a quartz sleeve rotatably connected within the housing, and a UV light source fixed within the quartz sleeve. A disinfection chamber for reacting with water to be treated is formed between the quartz sleeve and the housing. The housing has an inlet and an outlet, which are connected through the disinfection chamber. The cleaning unit includes a circulation pipe and a dosing container for holding cleaning fluid. The dosing container is connected to the housing to deliver cleaning fluid to the disinfection chamber. The circulation pipe is connected to the housing and communicates with the disinfection chamber to form a circulation loop for cleaning. A circulation power source is connected to the circulation pipe to allow the cleaning fluid to flow in the circulation loop.

[0005] In one embodiment, an electric motor is fixed to the outside of the housing, and the shaft of the electric motor passes through the housing and is fixedly connected to the quartz sleeve.

[0006] In one embodiment, a sealing ring is fitted to the rotational contact area between the shaft and the housing. The sealing ring is designed to cover and seal the contact surface between the shaft and the housing to prevent liquid leakage through the contact area.

[0007] In one embodiment, a clamping mechanism is fixedly connected to the end of the rotating shaft away from the motor, and the clamping mechanism is clamped and connected to the quartz sleeve.

[0008] In one embodiment, the circulating power source is a circulating pump, which is disposed on the circulating pipe to provide circulating power.

[0009] In one embodiment, the water inlet of the housing is connected to a water inlet pipe, and the water inlet pipe is equipped with a water inlet pump.

[0010] In one embodiment, the pipeline from the dosing container to the housing is equipped with a metering pump for precisely controlling the amount of dosing delivered from the dosing container to the housing.

[0011] In one embodiment, the ultraviolet device further includes a control unit, which includes a controller and an ultraviolet light intensity sensor that transmits signals with the controller. The ultraviolet light intensity sensor is disposed on the outer wall of the quartz sleeve. The controller receives light intensity information from the ultraviolet light intensity sensor and performs the following control operations based on the light intensity information: controlling the dosing container to deliver cleaning fluid into the housing; turning the circulation power source on and off to control the circulation operation of the circulation tube; and controlling the rotation of the quartz sleeve.

[0012] In one embodiment, the water inlet of the housing is connected to a water inlet pipe, the water inlet pipe is equipped with a water quality detection sensor, and the controller receives the data collected by the water quality detection sensor to control the amount of cleaning solution added to the dosing container.

[0013] The beneficial effects of this utility model are as follows:

[0014] This application's ultraviolet (UV) device includes a cleaning unit connected to the UV radiation unit, which provides cleaning fluid. The cleaning fluid circulates through a circulation pipe to soak and rinse the quartz sleeve, thus cleaning the outer wall of the quartz sleeve. Simultaneously, the quartz sleeve's self-rotation via a motor enhances the cleaning effect. This self-rotation and automatic circulation cleaning design effectively removes inorganic scale and organic deposits from the quartz sleeve. The cleaning process eliminates the need to disassemble the device, improving cleaning efficiency. Furthermore, the rinsing with the cleaning fluid, compared to physical friction cleaning, does not cause scratches or damage to the quartz sleeve. The device structure is also simpler, ensuring stable operation of the UV device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the self-cleaning ultraviolet device in Embodiment 1 of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the self-cleaning ultraviolet device in Embodiment 2 of this utility model;

[0017] In the picture:

[0018] 10-Ultraviolet radiation unit, 101-Housing shell, 102-Ultraviolet light source, 103-Quartz sleeve, 104-Clamping mechanism, 105-Motor;

[0019] 20-Cleaning unit, 201-Dosing container, 202-Circulation pipe, 203-Circulation power source, 204-Metering pump;

[0020] 30-Water inlet unit, 301-Water inlet pipeline, 302-Water inlet pump, 303-Water quality detection sensor;

[0021] 40-Control unit, 401-Controller, 402-Ultraviolet light intensity sensor. Detailed Implementation

[0022] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0023] Ultraviolet (UV) light devices play a crucial role in water purification, primarily removing microbial contaminants such as bacteria, viruses, and protozoa. However, with continuous operation, inorganic salts and organic matter in the water gradually deposit and adhere to the surface of the quartz sleeve, reducing UV transmittance and thus affecting the device's disinfection efficiency. This can ultimately lead to decreased water purification and water safety issues. Traditional cleaning methods rely on manual operation or physical friction, which are time-consuming and labor-intensive, and it's difficult to guarantee the consistency of cleaning cycles and results. Frequent disassembly and cleaning can also cause wear and tear on the equipment, affecting its lifespan. To address the cleaning efficiency issue of UV devices, existing technologies have proposed the design of several automatic cleaning devices. For example, one UV disinfection device with an automatic cleaning mechanism uses a water inlet and outlet in the disinfection chamber, equipped with a cleaning rack and cleaning discs. A power unit drives the cleaning rack in reciprocating motion, causing the cleaning discs to wipe the surface of the lamp sleeve, achieving the effect of removing dirt. While this method reduces manual operation, it still has certain limitations. For example, the cavity structure inside the disinfection chamber is relatively complex, involving multiple transmission mechanisms, which are prone to damage when working in an aquatic environment for a long time. Moreover, the long-term friction and wiping of the cleaning plate can also damage the ultraviolet light source and affect the service life of the ultraviolet light.

[0024] To address this, the ultraviolet (UV) device of this application is equipped with a cleaning unit. This cleaning unit includes a dosing container filled with cleaning fluid, which is connected to the UV radiation unit of the UV device to form a circulation loop. The quartz sleeve of the UV radiation unit is then immersed and rinsed, achieving efficient and automatic cleaning of the UV device. Simultaneously, the self-rotation of the quartz sleeve enhances the cleaning effect. The cleaning process eliminates the need for manual disassembly and physical friction cleaning, enabling continuous and stable operation of the UV device and making it highly practical.

[0025] In one specific embodiment of this application, reference is made to Figure 1 As shown, the self-cleaning ultraviolet device includes an ultraviolet radiation unit 10 and a cleaning unit 20.

[0026] The ultraviolet radiation unit 10 includes a housing 101, an ultraviolet light source 102, and a quartz sleeve 103. The ultraviolet light source 102 is fixed inside the quartz sleeve 103, and can be fixed in various ways, such as threaded connection, snap-fit ​​connection, or adhesive. The housing 101 is cylindrical, and the ultraviolet light source 102 and the quartz sleeve 103 are elongated to match the cylindrical housing 101. Both the ultraviolet light source 102 and the quartz sleeve 103 are arranged along the long axis of the housing 101, i.e., the ultraviolet light source 102, the quartz sleeve 103, and the housing 101 are coaxially arranged. The quartz sleeve 103 is rotatably connected inside the housing 101. The cavity between the quartz sleeve 103 and the housing 101 serves as a disinfection chamber for the water to be treated to pass through. The design of the disinfection chamber takes into account hydrodynamics to ensure that the water flow can form turbulence during passage, increasing the contact area and time between the water and the ultraviolet light. During operation, the quartz sleeve 103 rotates at a certain speed driven by a power source, which can slow down the deposition and adhesion rate of inorganic salts and organic matter in the water to be treated. The rotation speed can be determined according to the actual treatment volume. The shell 101 has an inlet and an outlet, which are connected through a disinfection chamber. Preferably, the straight-line distance between the inlet and the outlet is equal to the length of the longest line connecting any two points within the shell 101, that is, the inlet and the outlet are located at the two ends of the long axis of the cylindrical shell 101, ensuring that the water flow has the longest path when passing through the disinfection chamber, thereby maximizing the time under ultraviolet irradiation. The design of the inlet and outlet needs to consider the uniform distribution of water flow and the reduction of head loss. The inlet can be designed as multiple small holes or nozzles to ensure that the water flow is evenly distributed on the cross-section of the disinfection chamber; the outlet needs to be designed to reduce water flow turbulence and eddies to reduce head loss. During operation, the water to be treated enters the disinfection chamber through the inlet. As the water flows within the disinfection chamber, ultraviolet rays generated by the ultraviolet light source 102 irradiate the water, destroying the microorganisms in the water. The disinfected water is then discharged through the outlet to enter the next water treatment stage or be directly supplied.

[0027] The housing 101 is the external structure constituting the ultraviolet radiation unit 10, and is typically made of corrosion-resistant materials, such as stainless steel, to ensure durability and safety in water treatment environments. The ultraviolet light source 102 can be a mercury vapor lamp, an LED lamp, or other types of ultraviolet light source, depending on the required ultraviolet wavelength and intensity. The disinfection chamber is a cavity formed between the ultraviolet light source 102 and the housing 101, allowing the water to be treated to pass through. The design of the disinfection chamber ensures that the water is fully exposed to ultraviolet light during passage for effective disinfection. An inlet and an outlet are located on the housing 101 for connecting to an external water treatment system. The inlet introduces the water to be treated into the disinfection chamber, while the outlet discharges the disinfected water.

[0028] The rotatable connection of the quartz sleeve 103 within the housing 101 means that the quartz sleeve 103 is connected to the housing 101 via bearings, bushings, rotary joints, or other mechanical devices. This connection method allows the quartz sleeve 103 and the housing 101 to rotate relative to each other while maintaining a certain connection. Simultaneously, when the quartz sleeve 103 rotates within the housing 101, it needs to remain sealed or isolated. Sealing elements such as O-rings, lip seals, and metal sealing rings can be used to seal the quartz sleeve 103.

[0029] The cleaning unit 20 includes a dosing container 201 for storing cleaning solution. The dosing container 201 is connected to a disinfection chamber inside the housing 101 via a pipeline, allowing the cleaning solution to be delivered to the disinfection chamber to soak the surface of the quartz sleeve 103, dissolving and degrading deposited inorganic salts and organic matter. To better remove deposits, the dosing container 201 can have multiple independently partitioned storage chambers for storing different cleaning solutions. Sequential or mixed soaking with multiple cleaning solutions can achieve better cleaning results. The cleaning unit 20 also includes a circulation pipe 202, an open-ended delivery pipe. The two ends of the circulation pipe 202 are connected to the two ends of the housing 101 and communicate with the disinfection chamber. The circulation pipe 202 and the disinfection chamber form a cleaning circulation loop, in which the cleaning solution circulates, rinsing the deposits on the surface of the quartz sleeve 103, thereby achieving the cleaning purpose. In order to control the circulation of the cleaning fluid, a circulation power source 203 is installed on the circulation pipe 202. Under the action of the circulation power source 203, the cleaning fluid continuously flushes the quartz sleeve 103 at a certain flow rate and pressure to achieve the best cleaning effect.

[0030] During use, the water to be treated is input through the inlet of the housing 101 and enters the disinfection chamber. The ultraviolet light source 102 inside the quartz sleeve 103 generates ultraviolet radiation to irradiate microorganisms in the water, thereby reducing the microbial content in the water to a preset threshold. The treated water is discharged from the outlet of the housing 101 for use or further treatment. As the ultraviolet radiation unit 10 operates, inorganic salts and organic substances present in the water will gradually deposit and adhere to the surface of the quartz sleeve 103, resulting in a reduction in the intensity of ultraviolet radiation on the water. At this time, the inlet and outlet of the housing 101 are closed, and the supply of water to be treated to the ultraviolet radiation unit 10 is stopped. The cleaning solution in the dosing container 201 is then transported to the disinfection chamber inside the housing 101. Under the action of the circulating power source 203, the cleaning solution continuously circulates in the circulation loop formed by the circulation pipe 202 and the disinfection chamber inside the housing 101, immersing and rinsing the quartz sleeve 103 to remove inorganic scale and organic deposits on its surface, thus achieving the cleaning effect of the ultraviolet device. The cleaning solution is then discharged through the outlet or a separately provided drain outlet. During the rinsing process, the quartz sleeve 103 rotates at a certain speed driven by the power source, allowing the cleaning solution to contact the outer wall of the quartz sleeve more evenly. This rotation makes the flow of the cleaning solution more dynamic, increasing the friction between the cleaning solution and the surface of the quartz sleeve, thereby improving the cleaning effect of the cleaning solution on the surface of the quartz sleeve. Meanwhile, the rotation of the quartz sleeve can prevent the cleaning fluid from concentrating in a specific area of ​​the quartz sleeve for a long time, thereby reducing the risk of excessive local wear. This uniform rotation helps protect the surface of the quartz sleeve and extend its service life.

[0031] It is understood that in this embodiment, the ultraviolet radiation unit 10 refers to a device or apparatus capable of generating ultraviolet light, typically including an ultraviolet lamp or module, used for disinfecting water. Its core function is to kill bacteria and viruses in the water through ultraviolet irradiation, ensuring water quality safety. Piping connection refers to a pipeline system connecting various devices or components for transporting fluids (such as liquids or gases). It can be a rigid pipe (such as a metal pipe or plastic pipe) or a flexible pipe (such as a rubber hose or plastic flexible hose), and may include various connectors, such as joints, valves, elbows, etc., to achieve effective fluid transport and control. The inlet refers to the part where fluid enters the system or equipment; it can be a pipe, valve, or other connecting component used to guide fluid into the system. The outlet refers to the part where fluid leaves the system or equipment; it can also be a pipe, valve, or other connecting component used to control fluid discharge. The cleaning unit 20 refers to a unit or component used to perform cleaning operations; its core function is to remove organic matter, inorganic matter, and visible contaminants from the surface of objects. A circulation loop refers to a piping system that forms a closed loop within the system, used for circulating fluids (such as water, chemical reagents, etc.). This system ensures continuous fluid flow within the system. The circulation loop is a separate loop; specifically, the circulation pipe 202 forms an independent circulation loop with the ultraviolet radiation unit 10, without interfering with the water purification passage of the ultraviolet radiation unit 10. However, the circulation loop and the purification passage are allowed to share a portion of the piping. For example, a valve can be installed in a corresponding section of the water purification passage to interrupt the purification passage and prevent the cleaning fluid from contaminating the water to be treated during cleaning operations in the circulation loop. The dosing container 201 is used to store and contain chemical substances (such as cleaning fluids, disinfectants, flocculants, etc.) to be added to the treatment system. Its main function is to store the drugs to be added and to accurately add them to the treatment system when needed via pumps or other delivery equipment. The circulating power source 203 refers to a system or device that provides power to maintain the continuous flow of fluid in a closed circulation pipeline. This power source can be mechanical, such as a pump, or it can utilize thermal energy, pressure difference, or other forms of energy conversion mechanisms. Its core function is to drive the flow of fluid in the circulation loop to achieve the system's cleaning function. In this embodiment, the circulating power source 203 is selected as a circulating pump.

[0032] Cleaning fluid refers to a weak acid or weak base chemical liquid used to clean inorganic scale and organic deposits in the ultraviolet radiation unit 10. Examples of cleaning fluids for inorganic scale include: citric acid, which removes scale through chelation and dissolution, suitable for removing inorganic salt scale such as calcium carbonate (CaCO3); and sodium hydroxide (NaOH) or tetrasodium ethylenediaminetetraacetate (Na4EDTA), suitable for removing inorganic salt scale, including calcium carbonate precipitate, calcium sulfate, barium sulfate, and strontium sulfate precipitate. Cleaning fluids for organic deposits include: Na-SDS (sodium dodecylbenzenesulfonate), where SDS is a surfactant capable of emulsifying and dispersing organic matter; and phosphoric acid, which decomposes and dissolves organic matter through chemical action, aiding in the removal of organic deposits.

[0033] In some embodiments, reference is made to Figure 2 As shown, the self-cleaning ultraviolet device also includes a control unit 40, which includes a controller 401 and an ultraviolet light intensity sensor 402. The ultraviolet light intensity sensor 402 is installed inside the disinfection chamber of the housing 101 and is used to detect the ultraviolet radiation intensity of the ultraviolet light source 102. Preferably, the ultraviolet light intensity sensor 402 is installed on the outer wall of the quartz sleeve 103. The ultraviolet light intensity sensor 402 is signal-connected to the controller 401. The ultraviolet light intensity sensor 402 monitors the light intensity information of the ultraviolet radiation unit 10 in real time and transmits the light intensity information to the controller 401. The controller 401 turns the circulating power source 203 on or off according to the received light intensity information, thereby realizing the delivery or stopping of the cleaning fluid in the circulation loop. During operation, when the controller 401 detects that the ultraviolet light intensity is lower than a preset threshold, it determines that there may be dirt on the surface of the ultraviolet light source, requiring cleaning. The controller 401 then controls the dosing container 201 to activate the cleaning solution dispensing mechanism, quantitatively releasing cleaning solution into the circulation pipe 202. Simultaneously, the controller 401 activates the circulation power source 203 to accelerate the flow of cleaning solution in the circulation pipe 202, ensuring the cleaning solution evenly covers the surface of the quartz sleeve 103. After the cleaning process continues for a period of time, the controller 401 judges the cleaning effect based on feedback from the ultraviolet light intensity sensor 402 and stops the dispensing and circulation of cleaning solution as needed. Furthermore, adjustments can be made in real time during the cleaning process. As the cleaning progresses and the detected ultraviolet light intensity continuously increases, the controller 401 reduces the amount of cleaning solution delivered and lowers the power of the circulation power source 203 to prevent over-sterilization and equipment damage.

[0034] Generally, the inlet of the housing 101 is connected to an inlet pipe 301, on which an inlet pump 302 is installed. Its main function is to provide the necessary power to transport the water to be treated, ensuring that the water enters the ultraviolet radiation unit 10 at an appropriate flow rate and pressure. This not only provides power but also helps maintain the water pressure balance of the entire system. Simultaneously, the inlet pump 302 is electrically connected to the controller 401. The controller 401 can remotely control the start and stop of the inlet pump 302, as well as possible speed adjustments. The controller 401 sends commands to the inlet pump 302 based on a preset program or real-time monitored data (such as water level and flow rate), thereby achieving automated control.

[0035] A water quality sensor 303 can also be configured in the water inlet pipe 301. The water quality sensor 303 can measure various parameters in the water, such as common parameters like COD and UV. 254 Fe 2+ Ca 2+ Mg 2+ CO3 2- Quantitative analysis of key water quality indicators, etc. The water quality sensor 303 transmits the detected turbidity data to the controller 401. The controller 401 can automatically adjust the dosage of the cleaning solution in the dosing container 201 based on the data provided by the water quality sensor 303. If it is Fe... 2+ Ca 2+ Mg 2 +、CO3 2- When water quality indicators are high due to severe inorganic scaling, the proportion of cleaning agents such as citric acid, which are effective in removing inorganic substances, can be increased. This is especially important for COD and UV levels. 254 When water quality indicators representing organic matter content are high, the proportion of oxidizing agents or cleaning agents such as NaOH for organic matter removal can be increased. A flow controller can be used to control the amount of cleaning solution delivered. For example, a metering pump 204 can be installed on the pipeline between the dosing container 201 and the ultraviolet radiation unit 10. The metering pump 204 is electrically connected to the controller 401, enabling remote control of the metering pump 204 and ensuring that the cleaning solution is delivered to the ultraviolet radiation unit 10 at a predetermined rate and concentration. The controller 401 receives signals from the water quality sensor 303 and controls the start / stop and operating frequency of the metering pump 204 based on these signals and a preset program, thereby achieving precise dosing. Furthermore, the controller 401 receives signals from the water quality sensor 303, and in extreme situations such as sudden deterioration of water quality, can control the activation of the low-speed self-rotation function of the quartz sleeve 103 during water treatment, thereby slowing down the scaling rate of the quartz sleeve.

[0036] The controller 401 can be a microcontroller, programmable to perform specific tasks. In the ultraviolet (UV) device, the microcontroller can receive signals from the UV intensity sensor 402 and control the delivery and circulation power source of the cleaning fluid based on these signals. Alternatively, it can be a programmable logic controller (PLC), an electronic system for digital computational operations in industrial automation, used to control and manage various operations in the UV device. It can also be a single-chip microcontroller (SoC), integrating the controller core and other system components to control the delivery and circulation power source of the cleaning fluid. Furthermore, it can be an industrial PC designed specifically for industrial environments. The UV intensity sensor 402 can be a photodiode, a semiconductor device that converts light energy into electrical energy, used to measure the intensity of UV light. It can also be a highly sensitive photomultiplier tube (PMT); a UV photoresistor whose resistance changes with UV intensity; a spectrometer that measures the wavelength and intensity of light; or a UV photodiode used to detect UV light. When using a device, a reasonable selection can be made based on factors such as the specific application scenario, cost, accuracy requirements, response time, and environmental adaptability.

[0037] In some embodiments, reference is made to Figure 2 A motor 105 is fixed to the outer side of the housing 101. The motor 105 can be fixed to the housing 101 or to an external bracket. A through hole is provided on one side wall of the housing 101 for the output shaft of the motor 105 to pass through. The end of the output shaft of the motor 105 is fixedly connected to the quartz sleeve 103. The motor 105 is electrically connected to the controller 401, which can remotely start and stop the motor 105. During water treatment, when the water quality sensor 303 detects that the conditions are deteriorating, the controller 401 starts the motor 105 to rotate the quartz sleeve 103. The rotation causes the water flow to generate a continuous shear force on the wall of the quartz sleeve 103 and reduces the residence time of suspended particles on the wall, which helps to prevent the deposition and aggregation of dirt particles on the wall, thereby slowing down the scaling rate of the quartz sleeve 103. To ensure the sealing of the housing 101, a sealing ring is provided on the output shaft of the motor 105. The sealing ring is fitted onto the output shaft and located inside the through hole to achieve a seal at the through hole. Specifically, the sealing ring is selected as a lip seal. The tip of the lip is interference-fitted with the output shaft and the sealing groove to tightly adhere to the contact surface and prevent leakage. When working medium pressure is present, the lip of the lip seal is opened due to the additional medium pressure, increasing the contact pressure between it and the sealing contact pair and improving the sealing performance.

[0038] In some embodiments, referring to Figure 2, to enhance the connection stability between the quartz sleeve 103 and the motor 105, a clamping mechanism 104 is fixedly connected to the output shaft end of the motor 105. The clamping mechanism 104 is clamped to the quartz sleeve 103. The clamping mechanism 104 can be an elastic claw type, a clamp type, a vacuum adsorption type, a magnetic clamp type, etc. In this embodiment, the clamping mechanism 104 is preferably a clamp type. The clamping mechanism 104 includes a circular clamp, which can be a single unit or composed of two semi-circular clamps. The quartz sleeve 103 is fixed in the clamp, and one end of the clamp matches the connection structure of the output shaft end of the motor 105, such as a threaded connection or a flange connection.

[0039] In some embodiments, reference is made to Figure 2 As shown, the circulating power source 203 is a circulating pump. The controller 401 is electrically connected to the circulating pump through electrical circuits to realize remote control of the circulating pump. The controller 401 can send instructions to the circulating pump according to the preset program or real-time monitored data (such as flow rate, pressure, etc.) to ensure that the cleaning fluid passes through the ultraviolet radiation unit 10 at an appropriate flow rate, thereby realizing automatic control of the cleaning fluid flow rate and cleaning time.

[0040] Example 1

[0041] Reference Figure 1As shown, the self-cleaning ultraviolet (UV) device includes a water inlet unit 30, a UV radiation unit 10, and a cleaning unit 20. The water inlet unit 30 includes a water inlet pipe 301 and a water inlet pump 302, with the pump connected to the pipe 301 to provide power for transporting the water to be treated. The UV radiation unit 10 includes a cylindrical housing 101, a UV lamp serving as a UV light source 102, and a quartz sleeve 103, with the sleeve 103 fitted over the UV lamp. A motor 105 is fixed to the outer wall of the housing 101, with the output shaft of the motor 105 passing through the housing 101. A circular clamp is threaded to the end of the output shaft, and the quartz sleeve 103 is fixed within the clamp. The housing 101, ultraviolet lamp, and quartz sleeve 103 are coaxially fixed, forming a disinfection chamber around the quartz sleeve 103. An inlet and an outlet are respectively opened at both ends of the housing 101. The inlet is connected to the inlet pipe 301, and the outlet is connected to the drain pipe. The inlet and outlet, connected to the disinfection chamber, form a water disinfection path. The cleaning unit 20 includes a dosing container 201, a metering pump 204, and a circulation pump as a power source 203. The dosing container 201 stores the cleaning solution. The dosing container 201, metering pump 204, and housing 101 are sequentially connected to the disinfection chamber via pipes. The circulation pipe 202 and the disinfection chamber in the housing 101 form a circulation loop for cleaning. The circulation pump, installed in the circulation pipe 202, provides power to the circulation loop. Specifically, the output end of the metering pump 204 is connected to the inlet pipe 301, and the connection point is located downstream of the inlet pump 302. One end of the circulation pipe 202 is connected to the inlet pipe 301, and the connection point is located downstream of the connection point between the metering pump 204 and the inlet pipe 301. The other end of the circulation pipe 202 is connected to the outlet pipe of the housing 101. A first valve is installed on the inlet pipe 301 upstream of the connection point between the metering pump 204 and the inlet pipe 301 and downstream of the inlet pump 302. A second valve is installed on the outlet pipe of the housing 101 downstream of the connection point of the circulation pipe 202.

[0042] In use, the inlet pump 302, the first valve, the ultraviolet light source 102, and the second valve are opened. The water to be treated enters the disinfection chamber of the housing 101 through the inlet pipe 301. The water to be treated surrounds the quartz sleeve in the disinfection chamber. The ultraviolet lamp in the quartz sleeve emits ultraviolet radiation to the water to be treated for disinfection. The treated water is discharged from the housing 101 through the outlet for the next stage of treatment or use. As processing time accumulates, a large amount of organic scale and deposits accumulate on the outer wall of the quartz sleeve. At this point, the inlet pump 302, the first valve, the UV lamp, and the second valve are closed. The metering pump 204 is opened to deliver the cleaning solution from the dosing container 201 into the disinfection chamber of the housing 101. Simultaneously, the circulation pump is activated, and the cleaning solution driven by the circulation pump circulates and soaks the quartz sleeve in the circulation pipe 202 and the disinfection chamber. Meanwhile, the motor 105 drives the quartz sleeve 103 to rotate, achieving comprehensive and enhanced cleaning of the quartz sleeve, thereby removing inorganic scale and organic deposits from the outer wall of the quartz sleeve. After cleaning, the second valve is opened to discharge the cleaning solution, thus achieving the cleaning purpose. The motor 105 is then closed, and the inlet pump 302, the first valve, the UV lamp, and the second valve are reopened for water treatment. In extreme cases such as deteriorating water quality, the low-speed rotation function of the quartz sleeve 103 can be activated during the water treatment process to slow down the scaling rate of the quartz sleeve 103.

[0043] Example 2

[0044] Reference Figure 2As shown, to achieve automatic operation of the self-cleaning ultraviolet device, in addition to the device in Embodiment 1, a controller 401 and an ultraviolet light intensity sensor 402 are also included. The ultraviolet light intensity sensor 402 is installed on the outer wall of the quartz sleeve 103 and is used to detect the intensity of ultraviolet light transmitted through the quartz sleeve 103. A water quality detection sensor 303 is connected upstream of the water inlet pump 302 on the water inlet pipeline 301 to detect the water quality of the water to be treated. The controller 401 is electrically connected to the ultraviolet light intensity sensor 402, the water inlet pump 302, the metering pump 204, the motor 105, the circulation pump, the first valve, the second valve, and the water quality detection sensor 303, respectively. The first valve and the second valve are both solenoid valves. During the cleaning process, the ultraviolet light intensity data of the ultraviolet light intensity sensor 402 is acquired. When the ultraviolet light intensity data is lower than a preset threshold, the controller 401 receives the ultraviolet light intensity data and closes the inlet pump 302, the first valve, and the second valve, opens the metering pump 204 and the circulation pump, and starts the motor 105 to carry out the cleaning work. After cleaning, when the ultraviolet light intensity data is higher than the preset threshold, the second valve is opened to discharge the cleaning solution. The motor 105 is kept open or closed, and the inlet pump 302, the first valve, and the second valve continue to be opened for water treatment. At the same time, the controller 401 can preliminarily determine the amount of cleaning solution to be delivered based on the water quality detection sensor 303, and control the circulation pump to achieve control of the soaking and rinsing time and flow rate.

[0045] Although the embodiments of this application have been described above in conjunction with the accompanying drawings, this application is not limited to the specific embodiments and application fields described above. The specific embodiments described above are merely illustrative and instructive, not restrictive. Those skilled in the art can make many other forms based on the guidance of this specification and without departing from the scope of protection of the claims of this application, and these are all within the scope of protection of this application.

Claims

1. A self-cleaning ultraviolet light device, characterized in that, include: An ultraviolet radiation unit (10) includes a housing (101), a quartz sleeve (103) rotatably connected inside the housing (101), and an ultraviolet light source (102) fixed inside the quartz sleeve (103). A disinfection chamber for the water to be treated to react is formed between the quartz sleeve (103) and the housing (101). The housing (101) has an inlet and an outlet, which are connected through the disinfection chamber. The cleaning unit (20) includes a circulation pipe (202) and a dosing container (201) for holding cleaning solution. The dosing container (201) is connected to the housing (101) to deliver cleaning solution to the disinfection chamber. The circulation pipe (202) is connected to the housing (101) and communicates with the disinfection chamber to form a circulation loop for cleaning. The circulation pipe (202) is equipped with a circulation power source (203) to make the cleaning solution flow in the circulation loop.

2. The self-cleaning ultraviolet device according to claim 1, characterized in that, An electric motor (105) is fixed to the outside of the housing (101). The electric motor (105) has an output shaft that passes through the housing (101) and is fixedly connected to the quartz sleeve (103).

3. The self-cleaning ultraviolet device according to claim 2, characterized in that, A sealing ring is fitted to the rotational contact area between the output shaft and the housing (101).

4. The self-cleaning ultraviolet device according to claim 2, characterized in that, A clamping mechanism (104) is fixedly connected to the end of the output shaft away from the motor (105), and the clamping mechanism (104) is clamped and connected to the quartz sleeve (103).

5. A self-cleaning ultraviolet light device according to claim 1, characterized in that, The circulating power source (203) is a circulating pump.

6. A self-cleaning ultraviolet device according to claim 1, characterized in that, The inlet of the housing (101) is connected to an inlet pipe (301), and the inlet pipe (301) is equipped with an inlet pump (302).

7. The self-cleaning ultraviolet device according to claim 1, characterized in that, The pipeline from the dosing container (201) to the housing (101) is equipped with a metering pump (204).

8. A self-cleaning ultraviolet light device according to claim 1, characterized in that, It also includes a control unit (40), which includes a controller (401) and an ultraviolet light intensity sensor (402) that transmits signals with the controller (401). The ultraviolet light intensity sensor (402) is disposed on the outer wall of the quartz sleeve (103). The controller (401) receives the light intensity information of the ultraviolet light intensity sensor (402) and performs the following control operations based on the light intensity information: controlling the dosing container (201) to deliver cleaning fluid into the housing (101), turning on and off the circulation power source (203) to control the circulation operation of the circulation pipe (202), and controlling the rotation of the quartz sleeve (103).

9. A self-cleaning ultraviolet device according to claim 8, characterized in that, The inlet of the housing (101) is connected to the water inlet pipe (301), and the water inlet pipe (301) is equipped with a water quality detection sensor (303). The controller (401) receives the data collected by the water quality detection sensor (303) to control the amount of cleaning solution added to the dosing container (201).

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