Built-in ultrasonic self-cleaning device for single-soldier portable water purification device

Abstract

The utility model discloses a single soldier portable water purification device is with built -in ultrasonic self -cleaning device, include: purifying storehouse, import end cap and export end cap are connected at the both ends of purifying storehouse, and water inlet pipe and pass through import end cap and enter purifying storehouse inside, and built -in support is connected on the import end cap in purifying storehouse, and one end of water inlet pipe is connected built -in support in purifying storehouse, and built -in support connects ultrasonic transducer, and the drain hole of intercommunication water inlet pipe is set up on built -in support, and waterproof power transmission cable passes through import end cap and is electrically connected ultrasonic transducer and is placed ultrasonic power amplifier on the outside of purifying storehouse, and the ultrasonic transducer is placed below in purifying storehouse, and the water purification discharge pipe and sewage discharge pipe pass through export end cap, and it is a kind of on -line, real -time, disassembly -free, effectual, low -cost self -cleaning device.

Description

Technical Field

[0001] This utility model relates to the technical field of ultrasonic self-cleaning devices, specifically a built-in ultrasonic self-cleaning device for a portable water purification device for individual soldiers. Background Technology

[0002] Portable field water purification equipment for individual soldiers requires high mobility, which in turn places stringent requirements on the size and weight of the equipment. Looking at the current state of water purification equipment development, relevant units employ combinations of multiple water purification technologies and modular designs to meet the treatment requirements of different water sources and varying water supply volumes, thereby improving the applicability and reliability of field water purification equipment. Ultrafiltration membranes are a crucial module in portable water purification equipment for individual soldiers, typically serving as the final stage of the purification process. However, ultrafiltration membranes can gradually become contaminated during use, leading to a decrease in filtration efficiency; therefore, cleaning of PVDF-type ultrafiltration membranes is necessary.

[0003] There are various methods for cleaning ultrafiltration membranes, and ultrasonic cleaning is a physical cleaning method that can achieve both deep cleaning and sterilization. Many ultrasonic cleaning methods exist for ultrafiltration membrane water purification devices, but most are offline cleaning methods; online self-cleaning methods have not yet been reported.

[0004] While offline cleaning can improve the cleanliness of the ultrafiltration membrane, it typically requires disassembling the ultrafiltration membrane unit, which is significantly less convenient and offers less real-time cleaning. In contrast, online cleaning provides real-time protection without requiring disassembly of the ultrafiltration membrane housing (purification chamber), greatly reducing the labor costs associated with disassembly and improving both convenience and timeliness of cleaning.

[0005] In terms of installation methods, current ultrasonic cleaning mainly uses external clamping and external insertion methods. However, these design methods are mostly suitable for open applications where size is not limited, such as containerized water purification devices and offline cleaning applications. They are not suitable for online cleaning of portable water purification devices for individual soldiers.

[0006] Compared to external clamp-on and external insertion ultrasonic cleaning methods, internal ultrasonic cleaning has significant advantages. In addition to not interfering with other components of the water purification equipment in terms of size, internal cleaning directly applies ultrasonic cavitation to the ultrafiltration membrane, avoiding ultrasonic energy loss caused by external installation, thereby improving the protection effect.

[0007] In order to meet the needs of built-in online cleaning, in addition to the ultrasonic device needing to be as small and light as possible in size and weight, higher requirements are also placed on the performance of the ultrasonic transducer, including beamwidth, streamlined shape, and acoustic power. Utility Model Content

[0008] This invention provides a built-in ultrasonic self-cleaning device for portable water purification systems for individual soldiers, which solves the problems mentioned in the background art.

[0009] This utility model provides the following technical solution: a built-in ultrasonic self-cleaning device for a portable water purification system for individual soldiers, comprising: a purification chamber, an ultrafiltration membrane, an inlet end cap, an outlet end cap, a water inlet pipe, a purified water discharge pipe, a wastewater discharge pipe, an ultrasonic transducer, a built-in support, a waterproof power transmission cable, and an ultrasonic power amplifier. The inlet and outlet end caps are connected to the two ends of the purification chamber. The water inlet pipe passes through the inlet end cap and enters the interior of the purification chamber. The built-in support is connected to the inlet end cap inside the purification chamber. One end of the water inlet pipe inside the purification chamber is connected to the built-in support. The built-in support is connected to the ultrasonic transducer. A drain port connected to the water inlet pipe is provided on the built-in support. The waterproof power transmission cable passes through the inlet end cap and electrically connects the ultrasonic transducer and the ultrasonic power amplifier placed outside the purification chamber. The ultrasonic transducer and the ultrasonic power amplifier constitute an ultrasonic generation system that can operate online at any time without disassembly, ensuring the cleaning duration and cleaning effect. The ultrafiltration membrane is placed below the ultrasonic transducer inside the purification chamber. The clean water discharge pipe and the wastewater discharge pipe pass through the outlet end cap. The direction of the inlet end cap is upstream of the water flow in the purification chamber, and the direction of the outlet end cap is downstream of the water flow in the purification chamber. By utilizing the flow characteristics of purified water when the water purification device is working, the difficulty of the small space of the purification chamber and the high volume requirement of the ultrasonic device is overcome. Based on the characteristics of the ultrafiltration membrane being flexible and multi-layered and occupying a large space in the purification chamber, an ellipsoidal ultrasonic transducer and its support are designed. Together with the purification chamber, ultrasonic power amplifier, etc., it forms an integrated whole to form the built-in ultrasonic self-cleaning device of this portable water purification device for individual soldiers.

[0010] As an optional solution for the built-in ultrasonic self-cleaning device of the portable water purification device for individual soldiers described in this utility model, the waterproof power transmission cable is fixed to the inlet end cap through a watertight connector.

[0011] As an optional solution for the built-in ultrasonic self-cleaning device of the portable water purification device for individual soldiers described in this utility model, the ultrasonic transducer and the built-in support both have a certain gap with the inner wall of the purification chamber, which facilitates the flow of water.

[0012] As an optional embodiment of the built-in ultrasonic self-cleaning device for the portable water purification device for individual soldiers described in this utility model, a certain gap exists between the ultrasonic transducer and the ultrafiltration membrane. This avoids direct contact between the ultrasonic transducer and the ultrafiltration membrane, thereby preventing the ultrasonic transducer from experiencing resonant frequency drift or sudden changes in radiation impedance, which would affect its power output and reduce the self-cleaning effect.

[0013] As an optional embodiment of the built-in ultrasonic self-cleaning device for the portable water purification device for individual soldiers described in this utility model, the ultrasonic transducer is a transducer with wide-beam sound field radiation characteristics, and the ultrasonic transducer is ellipsoidal in shape, which can ensure complete sound field coverage inside the purification chamber and downstream of the water flow in the purification chamber, thereby ensuring the self-cleaning effect in a limited space. The ellipsoidal ultrasonic transducer, with its teardrop-shaped appearance, can reduce water flow resistance, and its wide-beam characteristics combined with water flow can greatly improve the cleaning effect on the inner surface of the purification chamber and the ultrafiltration membrane, extend the ultrafiltration membrane disassembly cycle, reduce the frequency of disassembly, and improve the working life of the ultrafiltration membrane.

[0014] As an optional solution for the built-in ultrasonic self-cleaning device for the portable water purification device for individual soldiers described in this utility model, this device is an online device that can work continuously or intermittently according to the working needs of the water purification device to ensure the self-cleaning effect.

[0015] This utility model has the following beneficial effects:

[0016] 1. This portable water purification device for individual soldiers uses a built-in ultrasonic self-cleaning device, which is an online, real-time, non-disassembly-required, effective, and low-cost self-cleaning device.

[0017] 2. This portable water purification device for individual soldiers uses a built-in ultrasonic self-cleaning device that can reduce the risk of ultrafiltration membrane clogging, extend the service life of ultrafiltration membrane, and reduce the frequency of ultrafiltration membrane disassembly through real-time operation.

[0018] 3. This portable water purification device for individual soldiers has a built-in ultrasonic self-cleaning device that can work at any time to ensure self-cleaning effect and a sufficiently long cleaning time.

[0019] 4. This portable water purification device for individual soldiers achieves self-cleaning function with a built-in ultrasonic self-cleaning device without increasing the volume of the water purification device. The length of the purification chamber can be increased by simply making local adjustments within the device to meet the installation requirements of the ultrasonic transducer.

[0020] 5. This portable water purification device for individual soldiers uses a built-in ultrasonic self-cleaning device. By integrating the self-cleaning device with the water purification device, the ultrasonic activation time and water purification time can be controlled by a program. This allows for staggered operation, reduces power consumption requirements, and eliminates the need for an external power supply, making self-cleaning of the water purification device easier to achieve, especially under conditions of limited resources in the field.

[0021] 6. This portable water purification device for individual soldiers uses a built-in ultrasonic self-cleaning device. Compared with traditional designs such as external clamping, the built-in design allows the ultrasound to act directly on the ultrafiltration membrane, reducing the loss of ultrasonic energy and improving the cleaning effect. Attached Figure Description

[0022] Figure 1This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a three-dimensional structural diagram of the present invention from another angle.

[0024] Figure 3 This is a schematic diagram of the connection structure of the ultrasonic transducer in this utility model.

[0025] Figure 4 This is a schematic diagram of the connection structure of the ultrasonic power amplifier in this utility model.

[0026] Figure 5 This is a schematic diagram of the structure of the ultrafiltration membrane in this utility model.

[0027] Figure 6 This is a schematic diagram of the internal structure of this utility model. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-6 One type of portable water purification device for individual soldiers uses a built-in ultrasonic self-cleaning device, comprising: a purification chamber 1, with openings at both ends; an inlet end cap 3 and an outlet end cap 4 connected to both ends of the purification chamber 1; a water inlet pipe 5 passing through the inlet end cap 3 and entering the interior of the purification chamber 1; one end of the water inlet pipe 5 being the upstream end of the water flow in the purification chamber 1; water entering the purification chamber 1 from the water inlet pipe 5; after passing through the inlet end cap 3 and entering the purification chamber 1, the water inlet pipe 5 is connected to an internal support 9; the internal support 9 is connected to an ultrasonic transducer 8; water entering the purification chamber 1 from the water inlet pipe 5... The water then flows from the drain outlet on the built-in support 9 to the ultrasonic transducer 8 and flows along the outer periphery of the ultrasonic transducer 8. The ultrafiltration membrane 2 is placed inside the purification chamber 1 below the ultrasonic transducer 8. The advantage of this structural design is that the ultrasonic cavitation bubbles can be carried along with the water flow to the ultrafiltration membrane 2 below the purification chamber 1. The direct cavitation effect of the ultrasonic waves, the flushing effect of the water flow, and the ultrasonic cavitation bubbles carried by the water flow can work together to create cavitation and mechanical disturbance on the purification chamber 1 and the ultrafiltration membrane 2, reducing the deposition of colloids, particulate matter, and bacteria on the surface of the ultrafiltration membrane.

[0030] It should be noted that the waterproof power transmission cable 10 passes through the inlet end cap 3 and is electrically connected to the ultrasonic transducer 8 and the ultrasonic power amplifier 11 placed outside the purification chamber 1. The ultrasonic power amplifier 11 is placed outside the purification chamber 1 according to the space of the water purification device and fixed inside the water purification device. Its power supply is provided by the water purification device and it works at different times from the water purification process to achieve the purpose of not increasing the overall power consumption. Furthermore, the waterproof power transmission cable 10 is fixed to the inlet end cap 3 through the watertight connector 12 to ensure watertightness.

[0031] The ultrasonic transducer 8 adopts an ellipsoidal shape, such as the transducer disclosed in the patent with authorization announcement number CN109453980B. The ellipsoidal ultrasonic transducer can apply an electrical power of about 200W, while the power of a common ultrasonic cleaning transducer is 40-50W. In comparison, it has significant small size and high power characteristics and hemispherical directivity characteristics. The ellipsoidal ultrasonic transducer has a wide beam sound field radiation characteristic, which can ensure that the interior of the purification chamber 1 and the downstream position of the water flow in the purification chamber 1 are completely covered by the sound field to ensure the self-cleaning effect in a limited space. Furthermore, the ellipsoidal ultrasonic transducer, the ultrasonic power amplifier 11, and the waterproof power transmission cable 10 need to form good impedance matching characteristics according to the sound field characteristics in the purification chamber to obtain good and stable sound radiation performance.

[0032] The clean water discharge pipe 6 and the sewage discharge pipe 7 pass through the outlet end cover 4, and the outlet end cover 4 is in the direction of the downstream end of the water flow in the purification chamber 1.

[0033] In detail, both the ultrasonic transducer 8 and the built-in support 9 have a certain gap with the inner wall of the purification chamber 1. This gap between the ultrasonic transducer 8 and the ultrafiltration membrane 2 allows water to flow smoothly while preventing the ultrasonic transducer 8 from being covered by the ultrafiltration membrane 2. This ensures normal operation of the transducer, normal water intake and drainage, and the normal operation of the ultrasonic device. It also provides normal cleaning for the ultrafiltration membrane 2 and the interior of the purification chamber 1, preventing direct contact between the ultrasonic transducer 8 and the ultrafiltration membrane 2. This prevents the ultrasonic transducer 8 from experiencing resonant frequency drift, which would affect its power output and reduce its self-cleaning effect.

[0034] Furthermore, for the ellipsoidal ultrasonic transducer, its teardrop-shaped shape can reduce water flow resistance. Its wide beam characteristics, combined with water flow, can greatly improve the cleaning effect on the inner surface of the purification chamber 1 and the ultrafiltration membrane 2, extend the ultrafiltration membrane disassembly cycle, reduce the frequency of disassembly, and improve the working life of the ultrafiltration membrane.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A built-in ultrasonic self-cleaning device for a portable water purification system for individual soldiers, characterized in that, include: Purification chamber (1), ultrafiltration membrane (2), inlet end cap (3), outlet end cap (4), water inlet pipe (5), clean water discharge pipe (6), sewage discharge pipe (7), ultrasonic transducer (8), built-in support (9), waterproof power transmission cable (10), and ultrasonic power amplifier (11). The inlet end cap (3) and outlet end cap (4) are connected to the two ends of the purification chamber (1). The water inlet pipe (5) passes through the inlet end cap (3) and enters the interior of the purification chamber (1). The built-in bracket (9) is connected to the inlet end cap (3) inside the purification chamber (1). The end of the water inlet pipe (5) located inside the purification chamber (1) is connected to the built-in bracket (9). The built-in bracket (9) is connected to the ultrasonic transducer (8). The built-in bracket (9) has a drain outlet connected to the water inlet pipe (5). The waterproof power transmission cable (10) passes through the inlet end cap (3) and is electrically connected to the ultrasonic transducer (8) and the ultrasonic power amplifier (11) located outside the purification chamber (1). The ultrafiltration membrane (2) is placed below the ultrasonic transducer (8) inside the purification chamber (1). The clean water discharge pipe (6) and the sewage discharge pipe (7) pass through the outlet end cap (4). The direction of the inlet end cap (3) is the upstream end of the water flow in the purification chamber (1), and the direction of the outlet end cap (4) is the downstream end of the water flow in the purification chamber (1).

2. The built-in ultrasonic self-cleaning device for a portable water purification system for individual soldiers according to claim 1, characterized in that: The waterproof power transmission cable (10) is fixed to the inlet end cap (3) via a watertight connector (12).

3. The built-in ultrasonic self-cleaning device for a portable water purification device for individual soldiers according to claim 1, characterized in that: Both the ultrasonic transducer (8) and the built-in support (9) have a certain gap with the inner wall of the purification chamber (1).

4. The built-in ultrasonic self-cleaning device for a portable water purification device for individual soldiers according to claim 1, characterized in that: There is a certain gap between the ultrasonic transducer (8) and the ultrafiltration membrane (2).

5. The built-in ultrasonic self-cleaning device for a portable water purification device for individual soldiers according to claim 1, characterized in that: The ultrasonic transducer (8) is a transducer with wide beam acoustic field radiation characteristics.

6. The built-in ultrasonic self-cleaning device for a portable water purification device for individual soldiers according to claim 1, characterized in that: The ultrasonic transducer (8) is ellipsoidal.

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