Flowing water sterilization device based on ultraviolet LED and flowing water sterilization method therefor

Abstract

The present invention belongs to the technical field of ultraviolet sterilization, and relates to a flowing water sterilization device based on ultraviolet LED and a flowing water sterilization method therefor. The flowing water sterilization device comprises a flow-through body, at least two ultraviolet light source modules, and a cooling water pump. In each ultraviolet light source module, a lamp panel assembly abuts against a heat dissipation assembly, and a cooling water path is provided inside the heat dissipation assembly. The cooling water pump extracts part of water flowing through the flow-through body and waiting to be sterilized as cooling water and then pumps same into the cooling water path of the heat dissipation assembly of a first ultraviolet light source module, and after flowing through all the ultraviolet light source modules, the cooling water is re-injected into the flow-through body to continue the sterilization. The flowing water sterilization device with self-contained water-cooling heat dissipation provided in the present invention greatly improves the heat dissipation capacity and performance of the ultraviolet light source modules, thereby improving the overall heat dissipation efficiency of the flowing water sterilization device, enabling the application of the flowing water sterilization device in scenarios with high water pressure, large flow rates and continuous operation, while maintaining low costs.

Description

Ultraviolet LED-based flowing water sterilization device and method thereof TECHNICAL FIELD

[0001] The present application relates to the field of ultraviolet sterilization technology, and in particular to an ultraviolet LED-based flowing water sterilization device and method thereof. BACKGROUND

[0002] The field of flowing water sterilization and disinfection covers the sterilization and disinfection of drinking water supply in daily life and the sterilization and disinfection of sewage and wastewater recovery and discharge in some special occasions. With the continuous improvement of people's living standards and the increasing emphasis on environmental protection and safety, the demand for clean and safe water resources, which are indispensable in daily life, has reached a very high standard. The sterilization and disinfection process is of great significance to ensuring drinking water hygiene, maintaining people's health, and protecting the natural environment, and is an important part of daily life and industrial production processes.

[0003] Patent CN108439536B discloses a deep ultraviolet LED flowing water sterilization device and method, wherein the sterilization device comprises a flowing water cavity, a water-proof transparent plate, a PCB, a deep ultraviolet LED, and a driving power supply. The cavity wall of the flowing water cavity is provided with a mounting groove. The water-proof transparent plate is mounted on the mounting groove. The PCB is arranged on the water-proof transparent plate. The deep ultraviolet LED is arranged on the PCB and faces one side of the water-proof transparent plate. The deep ultraviolet LED emits ultraviolet rays for sterilizing the flowing water in the flowing water cavity. The driving power supply is electrically connected to the PCB.

[0004] The flowing water sterilization device disclosed in the above patent has the following problems:

[0005] 1. The structure uses a special-shaped stainless steel as a water flow passage. The ultraviolet transmission window and the LED light source are fixed and sealed by grooving and bolting on the stainless steel body. This method has high requirements for the processing of the stainless steel shell, and the bolts are prone to leakage in high water pressure environments, resulting in equipment failure. Therefore, this structure is only suitable for small flow and low water pressure and occasional use, and is not suitable for large flow, high water pressure, and continuous use.

[0006] 2. The ultraviolet LED light source is placed in the groove on the stainless steel flowing water cavity. The wall thickness of the flowing water cavity is limited, and a thicker wall thickness is required, increasing the processing and material costs. The rectangular slot on the flowing water cavity needs to be embedded with a quartz plate, which requires higher sealing and waterproof performance of the combination of the quartz plate around the slot and the stainless steel slot. Therefore, this scheme is only suitable for low water pressure and small flow (<0.6 tons / hour).

[0007] 3. Deep ultraviolet LEDs only have contact between the edge and the overcurrent part of the equipment, resulting in limited heat dissipation. The heat dissipation medium on the back of most LED boards is air, which has poor heat dissipation conditions and poor heat dissipation effect. High-power LEDs cannot be used, and the water treatment capacity is limited. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides a flowing water sterilization device based on ultraviolet LEDs and a flowing water sterilization method thereof. The technical solution of this invention is as follows:

[0009] The present invention provides a flowing water sterilization device based on ultraviolet LED light source, which includes a flow body, at least two ultraviolet light source modules and a cooling water pump;

[0010] At least two ultraviolet light source modules are connected to the flow body. Each ultraviolet light source module includes a lamp board assembly and a heat dissipation assembly. The lamp board assembly and the heat dissipation assembly are attached together. The heat dissipation assembly has a cooling water channel inside. The cooling water channels in the at least two ultraviolet light source modules are connected in series. The flow body has a cooling water outlet and a cooling water return outlet. The cooling water pump is connected to the cooling water channel of the first ultraviolet light source module through the cooling water outlet. The cooling water channel of the last ultraviolet light source module is connected to the cooling water return outlet.

[0011] The flow-through body is used to store the water to be sterilized. The cooling water pump draws part of the water to be sterilized from the flow-through body through the cooling outlet and pumps it into the cooling water path of the first ultraviolet light source module. The heat dissipation component in the first ultraviolet light source module carries away the heat generated by the lamp board component through the cooling water entering it. The cooling water continues to flow into the cooling water path of the next ultraviolet light source module until the cooling water flows out from the last ultraviolet light source module and flows back to the flow-through body through the cooling return outlet to continue sterilization.

[0012] Preferably, the flow-through body is a cylindrical structure with openings at both ends. The top surface of the flow-through body is connected to an inlet flange interface and an outlet flange interface for connecting to an external water circuit, respectively. Both ends of the flow-through body are connected to flange seats. Several flange bases are connected at intervals on the side of the flow-through body. At least two ultraviolet light source modules are connected to the flange seats and / or flange bases. The flange seats are connected to the ultraviolet light source modules or sealing covers. The number of flange bases is fixed. The number of ultraviolet light source modules is less than or equal to the number of flange bases. The flange bases not connected to ultraviolet light source modules are connected to the sealing covers.

[0013] The ultraviolet light source module further comprises a module body, an ultraviolet transmission window and a circular ring cover plate, a recess is formed in the front middle of the heat dissipation assembly, the lamp plate assembly is placed in the recess and connected with the heat dissipation assembly through bolts, the lamp plate assembly is attached to the upper surface of the heat dissipation assembly, the ultraviolet transmission window is located on the light emitting side of the lamp plate assembly and connected with the heat dissipation assembly through the circular ring cover plate and fastening bolts; a pipeline hollow structure is formed in the interior of the heat dissipation assembly as a cooling water channel, a cooling water inlet and a cooling water outlet are formed on the module body, and the cooling water inlet and the cooling water outlet are respectively communicated with the inlet and the outlet of the cooling water channel of the heat dissipation assembly;

[0014] The water inlet of the cooling water pump is communicated with the cooling water outlet, the water outlet of the cooling water pump is communicated with the cooling water inlet of the first ultraviolet light source module, the cooling water outlet of the first ultraviolet light source module is communicated with the cooling water inlet of the next ultraviolet light source module, and so on, and the cooling water outlet of the last ultraviolet light source module is communicated with the cooling water return.

[0015] Preferably, the flowing water sterilization device based on the ultraviolet LED light source further comprises an external electric control box, the external electric control box is electrically connected with the at least two ultraviolet light source modules and the cooling water pump, and the external electric control box is used for controlling whether the at least two ultraviolet light source modules and the cooling water pump work or not; a wire passing hole is connected to the module body, and the external electric control box and the lamp plate assembly in the ultraviolet light source module are electrically connected through the wire passing hole.

[0016] Preferably, the number of the ultraviolet light source modules is two, and the two ultraviolet light source modules are respectively connected with the two flange seats.

[0017] Alternatively, the at least two ultraviolet light source modules are connected with the plurality of flange bases.

[0018] Alternatively, the at least two ultraviolet light source modules are connected with at least one of the two flange seats and at least one of the plurality of flange bases.

[0019] Preferably, the lamp plate assembly comprises a PCB and a plurality of LED lamp beads, the LED lamp beads are mounted on the PCB, and the PCB is electrically connected with the external electric control box through the wire passing hole.

[0020] An ultraviolet intensity sensor is further mounted on the PCB, and the ultraviolet intensity sensor is electrically connected with the external electric control box.

[0021] Preferably, a sealing rubber gasket is mounted at the connection between the circular ring cover plate and the ultraviolet transmission window, and a silicon grease heat conduction layer is coated between the lamp plate assembly and the heat dissipation assembly.

[0022] Preferably, a water pump mounting bracket is fixedly connected to the top surface of the flow body, the water pump mounting bracket is located between the water inlet flange interface and the water outlet flange interface, the cooling water pump is connected with the water pump mounting bracket, and a mounting base is connected below the flow body.

[0023] Preferably, at least one sensor mounting base is connected to the flow body; a sensor mounted on the sensor mounting base is electrically connected to an external electric control box, and the sensor is a flow rate sensor, a temperature sensor, an ultraviolet transmittance sensor or a turbidity sensor.

[0024] Preferably, the material of the flow body is food-grade stainless steel, and the material of the ultraviolet transmission window is quartz.

[0025] The application also provides a flow water sterilization method of the flow water sterilization device based on the ultraviolet LED light source, which comprises the following steps:

[0026] S1, flowing water to be sterilized enters the flow body;

[0027] S2, the lamp plate assembly in the at least two ultraviolet light source modules emits ultraviolet light to sterilize the water to be sterilized entering the flow body;

[0028] S3, the cooling water pump extracts part of the water to be sterilized from the flow body through the cooling water outlet as cooling water, and then pumps the cooling water into the cooling water path of the first ultraviolet light source module; the heat generated by the lamp plate assembly is taken away by the heat dissipation assembly in the first ultraviolet light source module, and then the cooling water continues to flow into the cooling water path of the next ultraviolet light source module, until the cooling water flows out of the last ultraviolet light source module and then flows back to the flow body through the cooling water return port to continue sterilization;

[0029] S4, the flowing water sterilized is discharged from the flow body.

[0030] All the optional technical solutions can be combined arbitrarily, and the application does not describe the structures after combination in detail.

[0031] Through the above-mentioned solutions, the application has the following beneficial effects:

[0032] By setting the cooling water pump, the lamp plate assembly and the heat dissipation assembly in the ultraviolet light source module, and the cooling water paths of the plurality of ultraviolet light source modules in series, part of the water to be sterilized is extracted from the flow body by the external cooling water pump as cooling water, and then pumped into the cooling water path of the heat dissipation assembly in the first ultraviolet light source module, and then the cooling water flows through all the ultraviolet light source modules and then re-injected into the flow body to continue sterilization, thereby providing a flow water sterilization device with self-water cooling and heat dissipation, which greatly improves the heat dissipation capacity and effect of the ultraviolet light source module, and further improves the heat dissipation efficiency of the entire flow water sterilization device, so that the flow water sterilization device is suitable for large-flow scenarios.

[0033] By arranging a plurality of ultraviolet light source modules and arranging a plurality of ultraviolet light source modules to be connected with the flow body, the ultraviolet light source modules are machined on the flow body of the standard part, the machining requirement of the flow body is low, the machining cost and the overall sealing reliability of the cavity are controllable, so that the application can be applied to high water pressure, large flow and continuous occasions.

[0034] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, and the content of the specification can be implemented, the following preferred embodiments of the application are described in detail with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0035] Fig. 1 is a structure schematic diagram of the ultraviolet LED-based flowing water sterilization device in one view according to an embodiment of the application.

[0036] Fig. 2 is a structure schematic diagram of the ultraviolet LED-based flowing water sterilization device in another view according to an embodiment of the application.

[0037] Fig. 3 is an exploded view of the ultraviolet LED-based flowing water sterilization device according to an embodiment of the application.

[0038] Fig. 4 is a sectional view of the ultraviolet light source module in the ultraviolet LED-based flowing water sterilization device according to an embodiment of the application.

[0039] The reference signs are as follows: 1-flow body, 11-water inlet flange interface, 12-water outlet flange interface, 13-flange seat, 14-flange base, 15-water pump mounting bracket, 16-sensor mounting base, 17-cooling return water inlet, 18-mounting base, 2-ultraviolet light source module, 21-module body, 22-ultraviolet transmission window, 23-lamp plate assembly, 231-ultraviolet intensity sensor, 24-heat dissipation assembly, 241-cooling water inlet, 242-cooling water outlet, 243-wiring hole, 25-circular ring type cover plate, 26-sealing gasket, 3-cooling water pump, 31-water inlet, 32-water outlet. DETAILED DESCRIPTION

[0040] The specific embodiments of the application will be further described in detail below with reference to the drawings and examples. The following examples are used to illustrate the application, but not to limit the scope of the application.

[0041] The embodiment of the application provides a flowing water sterilization device based on an ultraviolet LED light source, which comprises a flow body 1, at least two ultraviolet light source modules 2 and a cooling water pump 3.

[0042] At least two ultraviolet light source modules 2 are connected with the flow body 1, the ultraviolet light source module 2 comprises a lamp plate assembly 23 and a heat dissipation assembly 24, the lamp plate assembly 23 is attached with the heat dissipation assembly 24, the heat dissipation assembly 24 is internally provided with a cooling water channel, the cooling water channels in the at least two ultraviolet light source modules 2 are connected in series with each other, the flow body 1 is provided with a cooling water outlet and a cooling water return port 17, the cooling water pump 3 is communicated with the cooling water channel of the first ultraviolet light source module 2 through the cooling water outlet, and the cooling water channel of the last ultraviolet light source module 2 is communicated with the cooling water return port 17;

[0043] The flow body 1 is used for storing water to be sterilized, the cooling water pump 3 pumps part of the water to be sterilized from the flow body 1 as cooling water through the cooling water outlet, and then pumps the cooling water into the cooling water channel of the first ultraviolet light source module 2, the heat dissipation assembly 24 in the first ultraviolet light source module 2 carries away the heat generated by the lamp plate assembly 23 through the cooling water entering the heat dissipation assembly 24, and then the cooling water continues to flow into the cooling water channel of the next ultraviolet light source module 2, until the cooling water flows out from the last ultraviolet light source module 2 and then flows back to the flow body 1 through the cooling water return port 17 to continue the sterilization.

[0044] Optionally, the flowing water sterilization device based on the ultraviolet LED light source further comprises an external electric control box, the external electric control box is electrically connected with the at least two ultraviolet light source modules 2 and the cooling water pump 3, and the external electric control box is used for controlling whether the at least two ultraviolet light source modules 2 and the cooling water pump 3 work or not. By arranging the external electric control box, the automatic control of whether the ultraviolet light source modules 2 and the cooling water pump 3 work or not can be realized, so that the automation degree of the entire flowing water sterilization device is improved.

[0045] In order to illustrate the specific implementation mode of the flowing water sterilization device provided by the embodiment of the present application, three specific embodiments are provided as follows:

[0046] Embodiment 1: The flowing water sterilization device in this embodiment comprises a flow body 1, at least two ultraviolet light source modules 2 and a cooling water pump 3; the flow body 1 is a cylindrical structure with two open ends, the flow body 1 is respectively welded with a water inlet flange interface 11 and a water outlet flange interface 12 on the top surface of the two sides for connecting external water channels, the flow body 1 is welded with a flange seat 13 at both ends, and the flow body 1 is welded with a plurality of flange bases 14 at intervals on the side surface, the at least two ultraviolet light source modules 2 are detachably connected with the flange bases 14, and the flange seats 13 are detachably connected with sealing cover plates; the ultraviolet light source module 2 in this embodiment is connected with the flange base 14, and the two flange seats 13 are connected with the sealing cover plates.

[0047] As shown in Figure 4, the ultraviolet light source module 2 comprises a module body 21, an ultraviolet transmission window 22, a lamp plate assembly 23, a heat dissipation assembly 24, and a circular ring cover plate 25. The heat dissipation assembly 24 is provided with a recess in the middle of the front face, the lamp plate assembly 23 is placed in the recess and connected with the heat dissipation assembly 24 through bolts, the lamp plate assembly 23 is attached to the upper surface of the heat dissipation assembly 24, the ultraviolet transmission window 22 is located at the light emitting side of the lamp plate assembly 23 and connected with the heat dissipation assembly 24 through the circular ring cover plate 25 and fastening bolts; a pipe type hollow structure is provided in the interior of the heat dissipation assembly 24 as a cooling water channel, the module body 21 is provided with a cooling water inlet 241 and a cooling water outlet 242, the cooling water inlet 241 and the cooling water outlet 242 are respectively connected to the inlet and outlet of the cooling water channel of the heat dissipation assembly 24;

[0048] The overflow body 1 is provided with a cooling water outlet and a cooling water return port 17, a cooling water pump 3 is connected with the overflow body 1, the water inlet 31 of the cooling water pump 3 is connected with the cooling water outlet through a water pipe, the water outlet 32 of the cooling water pump 3 is connected with the cooling water inlet 241 of the first ultraviolet light source module 2 through a water pipe, the cooling water outlet 242 of the first ultraviolet light source module 2 is connected with the cooling water inlet 241 of the next ultraviolet light source module 2 through a water pipe, and so on, the cooling water outlet 242 of the last ultraviolet light source module 2 is connected with the cooling water return port 17 through a water pipe.

[0049] The module body 21 is connected with a wire hole 243. The external electric control box is electrically connected with the lamp plate assembly 23 in the ultraviolet light source module 2 through the wire hole 243. The cable electrically connected between the lamp plate assembly 23 and the external electric control box is drawn out from the wire hole 243. The two flange bases 13 can be used as maintenance openings. The flange bases 14 can be arranged at one side of the flow body 1 or at both sides of the flow body 1. The flange bases 14 can be evenly distributed at one side or both sides of the flow body 1 or unevenly distributed. The inner part of the heat dissipation assembly 24 is provided with a pipeline type hollow structure. The inner part of the heat dissipation assembly 24 is provided with a plurality of curved water guide grooves. The water guide grooves can guide the cooling water to flow from the inlet to the outlet of the cooling water path of the heat dissipation assembly 24, thereby increasing the residence time of the cooling water in the heat dissipation assembly 24 and accelerating the cooling efficiency. The ultraviolet transmission window 22 and the circular ring type cover plate 25 realize the sealing and waterproof of the inside of the ultraviolet light source module 2 and protect the electrical parts such as the lamp plate assembly 23 inside. The lamp plate assembly 23 is used to emit ultraviolet light for sterilizing the water in the flow body 1. The cooling water outlet can be arranged at one side of the flow body 1 and located at one end close to the water inlet 31 of the cooling water pump 3, so as to save the water pipe between the cooling water outlet and the water inlet 31. The cooling backwater outlet 17 can be arranged at one side of the flow body 1 and located at a position close to the cooling water outlet 242 of the last ultraviolet light source module 2, so as to save the water pipe between the cooling water outlet 242 and the cooling backwater outlet 17. The external electric control box can control whether the lamp plate assembly 23 in each ultraviolet light source module 2 works or not, and can also control whether the cooling water pump 3 works or not.

[0050] It should be noted that the number of the flange bases 14 is fixed, the number of the installed ultraviolet light source modules 2 can be adjusted downward, and the excess flange bases 14 can be sealed with sealing cover plates.

[0051] In specific implementation, the lamp plate assembly 23 includes a PCB board and a plurality of LED lamp beads. The LED lamp beads are mounted on the PCB board. The PCB board is electrically connected with the external electric control box through the wire hole 243. An ultraviolet intensity sensor 231 can also be mounted on the PCB board and electrically connected with the external electric control box. The plurality of LED lamp beads are evenly distributed on the PCB board, so that relatively uniform ultraviolet light can be emitted. The ultraviolet intensity sensor 231 is used to detect the intensity of the ultraviolet light emitted by the LED lamp beads in real time and send the intensity to the external electric control box. The external electric control box can adjust the ultraviolet emission power of the LED lamp beads according to the intensity of the ultraviolet light or inform the user to replace the lamp plate assembly 23 in time according to the attenuation of the intensity of the ultraviolet light. The LED lamp beads and the ultraviolet intensity sensor 231 are both surface mounted on the PCB board.

[0052] In specific implementation, the sealing rubber gasket 26 is installed at the connection between the circular cover plate 25 and the ultraviolet transmission window 22 to enhance the sealing.

[0053] In specific implementation, the cooling water pump 3 is connected with the flow body 1. Specifically, the cooling water pump 3 can be directly connected with the flow body 1 or indirectly connected with the flow body 1. In the case of indirect connection, the water pump mounting bracket 15 is fixedly connected to the top surface of the flow body 1, and the cooling water pump 3 is connected with the water pump mounting bracket 15 through bolts, that is, the cooling water pump 3 is connected with the flow body 1 through the water pump mounting bracket 15. This kind of arrangement can increase the installation stability of the cooling water pump 3. The connection position of the cooling water pump 3 and the flow body 1 is not limited in the embodiments of the present application, for example, the cooling water pump 3 can be fixedly connected to the top surface of the flow body 1.

[0054] In specific implementation, the flow body 1 is connected with the mounting base 18 below, which is used to fix the flowing water sterilization device at the working position during use.

[0055] In specific implementation, the flow body 1 is connected with at least one sensor mounting base 16, which is used to install sensors. The types of the sensors can be flow rate sensors, temperature sensors, ultraviolet transmittance sensors, turbidity sensors, etc. The sensors are electrically connected with the external electric control box to provide necessary parameters for intelligent control of the device. When the flow rate sensor is installed in the sensor mounting base 16, the flow rate sensor can detect the flow rate in the flow body 1 in real time and send the flow rate signal to the external electric control box, so that the external electric control box adjusts the ultraviolet emission power of the LED lamp beads in the lamp plate assembly 23 according to the flow rate signal.

[0056] In specific implementation, the silicon grease heat conduction layer is coated between the lamp plate assembly 23 and the heat dissipation assembly 24 to quickly conduct the heat generated by the operation of the lamp plate assembly 23 to the heat dissipation assembly 24, thereby improving the water cooling heat dissipation efficiency.

[0057] In specific implementation, the material of the flow body 1 is preferably food-grade stainless steel; and the ultraviolet transmission window 22 is made of ultraviolet transmission material, preferably quartz.

[0058] In specific implementation, the sealing gasket is installed at the connection between the flange seat 13 and the sealing cover plate to ensure tight connection without water leakage.

[0059] The flowing water sterilization device provided by the embodiments of the present application has the following characteristics:

[0060] 1. The heat dissipation component 24 in the ultraviolet light source module 2 uses self-water cooling technology to remove the heat generated by the lamp panel assembly 23. Specifically, during heat dissipation, an external cooling water pump 3 draws a portion of the sterilization water from the flow body 1 and pumps it into the heat dissipation component 24 of the first ultraviolet light source module 2 as cooling water. After the cooling water flows through all the ultraviolet light source modules 2, it is re-injected into the flow body 1 for subsequent sterilization. Therefore, water cooling is achieved without the need for external cooling equipment and additional cooling liquid, which improves the heat dissipation capacity and efficiency of the ultraviolet light source module 2, enabling the entire lamp panel assembly 23 to work under optimal conditions and reducing operating costs.

[0061] 2. In the UV light source module 2, the adoption of self-cooling technology improves heat dissipation efficiency, allowing for a more compact arrangement of LED beads in the lamp board assembly 23. This reduces the size of the UV transmission window 22, effectively lowering the internal stress accumulated in the window material during manufacturing, reducing the risk of breakage and cracking, improving the overall reliability of the UV light source module 2, and lowering the overall cost of the equipment. Furthermore, the high heat dissipation efficiency allows for the selection of high-power LED beads, enabling large-volume water sterilization; the number of LED beads can also be adjusted to accommodate different flow rates.

[0062] 3. The flow body 1 is made of tubular stainless steel, which is a standard stainless steel profile. Cutting and welding on the basis of the standard profile is a common process in stainless steel processing. The consistency of the finished product is easy to ensure, making the processing cost and the overall sealing reliability of the cavity controllable. It can be applied to high water pressure, large flow and continuous application, especially suitable for sterilization scenarios with a flow rate of more than 10t / h, and also increases the service life of the entire device.

[0063] 4. By adjusting the number of ultraviolet light source modules 2, different water treatment volumes can be matched to different application scenarios, while the main structure of the flowing water sterilization device does not need to be modified. This expands the applicability of the flowing water sterilization device and further reduces the cost of the product.

[0064] Embodiment 2: The embodiment of the present application provides a flowing water sterilization device based on an ultraviolet LED light source. The number of the ultraviolet light source modules 2 in the embodiment is two, and the two ultraviolet light source modules 2 are connected to the two flange seats 13. The water outlet 32 of the cooling water pump 3 is connected to the cooling water inlet 241 of one ultraviolet light source module 2 through a water pipe, the cooling water outlet 242 of the ultraviolet light source module 2 is connected to the cooling water inlet 241 of another ultraviolet light source module 2 through a water pipe, and the cooling water outlet 242 of the other ultraviolet light source module 2 is connected to the cooling water return port 17 through a water pipe. The flowing water sterilization device in the embodiment can not be provided with the flange base 14. The remaining contents are the same as those in Embodiment 1, and will not be described here.

[0065] The flowing water sterilization device provided by the embodiment can realize sterilization of the water flowing in the flow body 1 through the opposite emission of ultraviolet light emitted from both ends of the flow body 1. Compared with Embodiment 1, this embodiment reduces the processing difficulty of the flow body 1 and reduces the processing and use cost of the material, but the number of the ultraviolet light source modules 2 is reduced, and the sterilization and disinfection capacity is relatively reduced compared with Embodiment 1, so it is more suitable for application scenarios with a processing flow of 10 t / h or less, and is a low-cost implementation manner of Embodiment 1.

[0066] Embodiment 3: The embodiment of the present application provides a flowing water sterilization device based on an ultraviolet LED light source. At least one flange seat 13 and at least one of the plurality of flange bases 14 are connected to the ultraviolet light source module 2. Two flange seats 13 can be connected to the ultraviolet light source module 2, and the other can be connected to the sealing cover plate, or both can be connected to the ultraviolet light source module 2. Some of the plurality of flange bases 14 can be connected to the ultraviolet light source module 2, and the remaining part can be connected to the sealing cover plate, or all can be connected to the ultraviolet light source module 2. The flange seat 13 not connected to the ultraviolet light source module 2 is connected to the sealing cover plate, and the flange base 14 not connected to the ultraviolet light source module 2 is connected to the sealing cover plate. The remaining contents are the same as those in Embodiment 1, and will not be described here.

[0067] It should be noted that FIGS. 1 to 3 take the example of connecting the ultraviolet light source module 2 to both the two flange seats 13 and the plurality of flange bases 14.

[0068] When the two flange seats 13 and the plurality of flange bases 14 are connected to the ultraviolet light source module 2, the flowing water sterilization device provided by the embodiment has stronger sterilization capacity and faster heat dissipation efficiency compared with Embodiments 1 and 2.

[0069] On the basis of the above-mentioned embodiments, the embodiment of the present application further provides a flowing water sterilization method of a flowing water sterilization device based on an ultraviolet LED light source, which comprises the following steps:

[0070] S1, flowing water to be sterilized enters the flow body 1;

[0071] S2, the lamp plate assembly 23 in at least two ultraviolet light source modules 2 emits ultraviolet light to sterilize the water body in the flow body 1;

[0072] S3, the cooling water pump 3 extracts part of the water body in the flow body 1 as cooling water through the cooling water outlet, and then pumps the cooling water into the cooling water inlet of the first ultraviolet light source module 2; the heat generated by the lamp plate assembly 23 is taken away by the cooling water entering the heat dissipation assembly 24, and then the cooling water continues to flow into the cooling water inlet of the next ultraviolet light source module 2, and so on, until the cooling water flows out of the cooling water outlet of the last ultraviolet light source module 2 and then flows back to the flow body 1 through the cooling water return port 17 to continue the sterilization;

[0073] S4, the sterilized flowing water flows out of the flow body 1.

[0074] The S3 in the specific implementation includes: the cooling water pump 3 extracts part of the water body in the flow body 1 as cooling water through the cooling water outlet, and then pumps the cooling water into the cooling water inlet of the first ultraviolet light source module 2; the heat generated by the lamp plate assembly 23 is taken away by the cooling water entering the heat dissipation assembly 24, and then the cooling water continues to flow into the cooling water inlet of the next ultraviolet light source module 2, and so on, until the cooling water flows out of the cooling water outlet of the last ultraviolet light source module 2 and then flows back to the flow body 1 through the cooling water return port 17 to continue the sterilization.

[0075] The S2 in the specific implementation includes that the external electric control box controls whether the lamp plate assembly 23 in at least two ultraviolet light source modules 2 emits ultraviolet light and the power of the emitted ultraviolet light. In this way, the automatic control of whether the lamp plate assembly 23 emits ultraviolet light and the power of the emitted ultraviolet light is realized, and the intelligent degree is high.

[0076] The S3 in the specific implementation includes that the external electric control box controls whether the cooling water pump 3 works. In this way, the automatic control of whether the cooling water pump 3 works is realized, and the intelligent degree is high.

[0077] The flowing water sterilization method provided by the embodiment of the application extracts part of the water body in the flow body 1 as cooling water through the external cooling water pump 3, injects the low-temperature cooling water into the heat dissipation assembly 24 of the ultraviolet light source module 2, takes away the heat generated by the lamp plate assembly 23, and then re-injects the cooling water into the flow body 1 under the action of the cooling water pump 3 to sterilize, which not only fully utilizes the low-temperature performance of the water body to be sterilized, but also does not cause waste of water resources. The method has the advantages of high cooling efficiency, good operation economy, and high use reliability for cooling the high-power ultraviolet light source module 2.

[0078] In conclusion, the embodiment of the present application provides a flowing water sterilization device and a flowing water sterilization method, which are low in cost, convenient to install, use and transport, good in sealing reliability, good in heat dissipation effect, high in heat dissipation efficiency and good in sterilization effect, solve the application demand of the purified water market, and expand the application of the ultraviolet LED in the large-flow purified water sterilization occasion.

[0079] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. It should be noted that those skilled in the art can make several improvements and modifications without departing from the technical principles of the present application, and these improvements and modifications should also be considered as within the protection scope of the present application.

Claims

1. A flowing water sterilization device based on an ultraviolet LED light source, characterized in that, The application relates to a sterilization device for water, which comprises a flow body (1), at least two ultraviolet light source modules (2) and a cooling water pump (3). The at least two ultraviolet light source modules (2) are connected with the flow body (1), the ultraviolet light source module (2) comprises a lamp plate assembly (23) and a heat dissipation assembly (24), the lamp plate assembly (23) is attached to the heat dissipation assembly (24), the heat dissipation assembly (24) is internally provided with a cooling water channel, the cooling water channels in the at least two ultraviolet light source modules (2) are connected in series with each other, the flow body (1) is provided with a cooling water outlet and a cooling water return (17), the cooling water pump (3) is communicated with the cooling water channel of the first ultraviolet light source module (2) through the cooling water outlet, and the cooling water channel of the last ultraviolet light source module (2) is communicated with the cooling water return (17). The flow body (1) is used for storing water to be sterilized, the cooling water pump (3) pumps part of the water to be sterilized from the flow body (1) as cooling water through the cooling water outlet, and then the cooling water is pumped into the cooling water channel of the first ultraviolet light source module (2), the heat generated by the lamp plate assembly (23) during operation is taken away by the cooling water entering the heat dissipation assembly (24) of the first ultraviolet light source module (2), and then the cooling water continues to flow into the cooling water channel of the next ultraviolet light source module (2), until the cooling water flows out from the last ultraviolet light source module (2) and then flows back to the flow body (1) through the cooling water return (17) to continue sterilization.

2. The flowing water disinfecting device based on the ultraviolet LED light source according to claim 1, characterized in that, The flow body (1) is a cylindrical structure with open ends, the flow body (1) is provided with a water inlet flange interface (11) and a water outlet flange interface (12) on the top surface of the flow body (1) and used for connecting external water channels, flange seats (13) are arranged at the two ends of the flow body (1), a plurality of flange bases (14) are arranged on the side surface of the flow body (1) at intervals, the at least two ultraviolet light source modules (2) are connected with the flange seats (13) and / or the flange bases (14), the flange seats (13) are connected with the ultraviolet light source modules (2) or sealing cover plates, the number of the flange bases (14) is fixed, the number of the ultraviolet light source modules (2) is less than or equal to the number of the flange bases (14), and the flange bases (14) not connected with the ultraviolet light source modules (2) are connected with the sealing cover plates. The ultraviolet light source module (2) further comprises a module body (21), an ultraviolet transmission window (22) and a circular ring type cover plate (25), a recess is formed in the front surface of the heat dissipation assembly (24), the lamp plate assembly (23) is arranged in the recess and connected with the heat dissipation assembly (24) through bolts, the lamp plate assembly (23) is attached to the upper surface of the heat dissipation assembly (24), the ultraviolet transmission window (22) is arranged on the light emitting side of the lamp plate assembly (23) and connected with the heat dissipation assembly (24) through the circular ring type cover plate (25) and fastening bolts, and a pipeline type hollow structure is formed in the heat dissipation assembly (24) as the cooling water channel, the module body (21) is provided with a cooling water inlet (241) and a cooling water outlet (242), and the cooling water inlet (241) and the cooling water outlet (242) are communicated with the inlet and the outlet of the cooling water channel of the heat dissipation assembly (24) respectively. The water inlet (31) of the cooling water pump (3) is communicated with the cooling water outlet, the water outlet (32) of the cooling water pump (3) is communicated with the cooling water inlet (241) of the first ultraviolet light source module (2), the cooling water outlet (242) of the first ultraviolet light source module (2) is communicated with the cooling water inlet (241) of the next ultraviolet light source module (2), and so on, and the cooling water outlet (242) of the last ultraviolet light source module (2) is communicated with the cooling water return port (17).

3. The flowing water disinfecting device based on the ultraviolet LED light source according to claim 2, characterized in that, The external electric control box is electrically connected with the at least two ultraviolet light source modules (2) and the cooling water pump (3), and is used for controlling whether the at least two ultraviolet light source modules (2) and the cooling water pump (3) work or not; the module body (21) is provided with a wire passing hole (243), and the external electric control box and the lamp plate assembly (23) in the ultraviolet light source module (2) are electrically connected through the wire passing hole (243).

4. The flowing water sterilization device based on the ultraviolet LED light source according to claim 2, characterized in that, The number of the ultraviolet light source modules (2) is two, and the two ultraviolet light source modules (2) are connected with the two flange seats (13) respectively; Or, the at least two ultraviolet light source modules (2) are connected with the plurality of flange bases (14); Or, the at least two ultraviolet light source modules (2) are connected with at least one of the two flange seats (13) and at least one of the plurality of flange bases (14).

5. The flowing water disinfecting device based on the ultraviolet LED light source according to claim 3, characterized in that, The lamp plate assembly (23) comprises a PCB and a plurality of LED lamp beads, the LED lamp beads are mounted on the PCB, and the PCB is electrically connected with the external electric control box through the wire passing hole (243); The PCB is further provided with an ultraviolet intensity sensor (231), and the ultraviolet intensity sensor (231) is electrically connected with the external electric control box.

6. The flowing water disinfecting device based on the ultraviolet LED light source according to claim 2, characterized in that, The sealing rubber joint (26) is mounted at the connection position of the circular ring type cover plate (25) and the ultraviolet transmission window (22); and the silicon grease heat conduction layer is coated between the lamp plate assembly (23) and the heat dissipation assembly (24).

7. The flowing water disinfecting device based on the ultraviolet LED light source according to claim 2, characterized in that, The water pump mounting bracket (15) is fixedly connected to the top surface of the flow passing body (1), is located between the water inlet flange interface (11) and the water outlet flange interface (12), and is connected with the cooling water pump (3); and the mounting base (18) is connected to the lower portion of the flow passing body (1).

8. The flowing water disinfecting device based on the ultraviolet LED light source according to claim 3, characterized in that, At least one sensor mounting base (16) is connected to the flow passing body (1); and the sensor mounted on the sensor mounting base (16) is electrically connected with the external electric control box, and is a flow rate sensor, a temperature sensor, an ultraviolet transmittance sensor or a turbidity sensor.

9. The flowing water disinfecting device based on the ultraviolet LED light source according to claim 2, characterized in that, The material of the flow passing body (1) is food-grade stainless steel, and the material of the ultraviolet transmission window (22) is quartz.

10. A method of sterilizing flowing water using the flowing water sterilizing apparatus based on an ultraviolet LED light source according to any one of claims 1 to 9, characterized by, Comprising: S1, flowing water to be sterilized enters the flow passing body (1); S2, the lamp plate assembly (23) in the at least two ultraviolet light source modules (2) emits ultraviolet light to sterilize the water to be sterilized in the flow passing body (1) by ultraviolet rays; S3, the cooling water pump (3) extracts part of the water to be sterilized from the flow body (1) through the cooling water outlet as cooling water, and then pumps it into the cooling water path of the first ultraviolet light source module (2). The heat generated by the lamp panel assembly (23) during operation is taken away by the cooling water entering the heat dissipation assembly (24) in the first ultraviolet light source module (2). The cooling water continues to flow into the cooling water path of the next ultraviolet light source module (2) until it flows out of the last ultraviolet light source module (2) and flows back to the flow body (1) through the cooling water return port (17) to continue sterilization. S4, the sterilized flowing water flows out of the flow body (1).

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