A sea water desalination apparatus
By introducing a water flow generator and vortex tube into the seawater desalination equipment, dual energy recovery of high-pressure concentrate is achieved, solving the problems of low energy utilization and high failure rate of existing equipment. This improves the energy utilization and freshwater production of the equipment, and is adaptable to various power supply methods, making it suitable for scenarios such as small islands and yachts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZHILIN SPACE EQUIP TECH CO LTD
- Filing Date
- 2025-02-26
- Publication Date
- 2026-07-03
AI Technical Summary
Existing seawater desalination equipment has low energy recovery efficiency in high-pressure concentrate and is complex in structure, making it prone to failure, resulting in energy waste and poor equipment reliability.
Design a seawater desalination device that achieves dual energy recovery of high-pressure concentrate by combining a water flow generator and a vortex tube. The water flow generator generates electricity and the vortex tube condenses it to obtain additional fresh water. Combining multiple power supply methods improves the flexibility and reliability of the device.
It achieves dual recovery of energy from high-pressure concentrate, improves energy utilization, increases freshwater production, has a compact structure, low failure rate, adapts to various power supply methods, and is suitable for various scenarios such as small islands and yachts.
Smart Images
Figure CN224450374U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of seawater desalination, specifically relating to a seawater desalination device with dual energy recovery function. Background Technology
[0002] Seawater desalination equipment requires a high-pressure pump to provide pressure to the RO membrane. The RO membrane itself requires a large osmotic pressure, which requires a large motor to drive the high-pressure pump. Therefore, the RO membrane produces a large amount of high-pressure concentrate during water production. Most companies, in pursuit of simple structure and low cost, directly discharge this concentrate, which wastes a lot of energy.
[0003] To address the problem of energy waste, energy recovery devices are currently available on the market. These devices work by introducing high-pressure concentrate into a piston-type energy recovery unit. The high-pressure concentrate pushes the piston, increasing the pressure of the RO membrane feed water and thus achieving energy recovery. However, these energy recovery devices have complex structures and are prone to piston jamming. Besides a high failure rate, the energy recovery efficiency of the high-pressure concentrate is also not high, resulting in a significant amount of energy waste. Utility Model Content
[0004] In view of the shortcomings of the prior art described in the background, in order to further improve the energy recovery and utilization rate of high-pressure concentrate, the seawater desalination equipment provided by this utility model can achieve dual recovery of energy from high-pressure concentrate, and fully recover and utilize the energy of high-pressure concentrate.
[0005] A seawater desalination device is disclosed, which includes a high-pressure pump, an RO membrane assembly, a water flow pipeline, a water flow generator, a fan, a vortex tube, a condenser tube, a controller, an energy storage battery, and a power supply unit;
[0006] The high-pressure pump is electrically connected to a motor. The outlet of the high-pressure pump is connected to the seawater inlet of the RO membrane assembly through a pipe. The RO membrane assembly is equipped with an RO membrane. The bottom surface of the RO membrane assembly is equipped with a clean water outlet, so that the seawater filtered by the RO membrane can smoothly flow out from the clean water outlet.
[0007] The concentrate outlet on the side of the RO membrane assembly is connected to one end of a water flow pipe, and the other end of the water flow pipe is connected to a drain line, so that the high-pressure concentrate flowing through the water flow pipe can be smoothly discharged from the equipment.
[0008] The water turbine of the water flow generator is installed inside the water flow pipe. The water flow generator is electrically connected to an energy storage battery via a controller, and the controller is electrically connected to a power supply unit.
[0009] The impeller of the fan is coaxially connected to the water turbine of the hydro generator. That is, the water flow pipe is fixedly connected to the back of the fan casing, and the rotating shaft of the hydro generator extends out of the water flow pipe and is fixedly connected to the rotating shaft of the fan. This achieves the coaxial connection between the impeller of the fan and the water turbine of the hydro generator. The air outlet of the fan is connected to the air inlet of the vortex tube, and the cold end of the vortex tube is connected to a condenser tube.
[0010] Furthermore, the controller and the power supply unit are electrically connected via a drive circuit. The drive circuit includes an integrated circuit, a second resistor, a fourth resistor, a sixth resistor, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a first field-effect transistor, a second field-effect transistor, and a third field-effect transistor. The three signal output terminals of the integrated circuit are respectively electrically connected to the input terminals of the series circuits composed of the first and second transistors, the third and fourth transistors, and the fifth and sixth transistors. The gate of the first field-effect transistor is electrically connected to the output terminal of the series circuit composed of the first and second transistors. The gate of the second field-effect transistor is electrically connected to the output terminal of the series circuit composed of the third and fourth transistors. The gate of the third field-effect transistor is electrically connected to the output terminal of the series circuit composed of the fifth and sixth transistors. The gate of the first field-effect transistor is electrically connected to the drain of the first field-effect transistor through the second resistor. The gate of the second field-effect transistor is electrically connected to the drain of the second field-effect transistor through the fourth resistor. The gate of the third field-effect transistor is electrically connected to the drain of the third field-effect transistor through the sixth resistor.
[0011] Preferably, the first, third, and fifth transistors are all NPN transistors, and the second, fourth, and sixth transistors are all PNP transistors. The collector of the first transistor is electrically connected to the emitter of the second transistor, the collector of the third transistor is electrically connected to the emitter of the fourth transistor, and the collector of the fifth transistor is electrically connected to the emitter of the sixth transistor. The three signal output terminals of the integrated circuit are electrically connected to the bases of the first, third, and fifth transistors, respectively.
[0012] Furthermore, the driving circuit also includes a first Zener diode, a second Zener diode, a third Zener diode, a fourth Zener diode, a fifth Zener diode, and a sixth Zener diode. The first field-effect transistor is electrically connected to its gate through an anti-series circuit composed of the first and second Zener diodes. The second field-effect transistor is electrically connected to its gate through an anti-series circuit composed of the third and fourth Zener diodes. The third field-effect transistor is electrically connected to its gate through an anti-series circuit composed of the fifth and sixth Zener diodes.
[0013] Furthermore, the driving circuit also includes a first resistor, a third resistor, and a fifth resistor. The gate of the first field-effect transistor is electrically connected to the output terminal of the series circuit composed of the first transistor and the second transistor through the first resistor. The gate of the second field-effect transistor is electrically connected to the output terminal of the series circuit composed of the third transistor and the fourth transistor through the third resistor. The gate of the third field-effect transistor is electrically connected to the output terminal of the series circuit composed of the fifth transistor and the sixth transistor through the fifth resistor.
[0014] Preferably, the power supply unit includes a solar power generation module, a mains power module, and / or a diesel generator module, all of which are electrically connected to the controller.
[0015] The solar power generation module includes a solar panel, an inverter, and a control box. The control box is electrically connected to the inverter, and the solar panel is electrically connected to the controller through the inverter.
[0016] The diesel generator module includes a diesel generator and a rectifier power supply circuit. The diesel generator is electrically connected to the controller through the rectifier power supply circuit.
[0017] The mains power module includes a power plug and a mains power rectifier circuit. The power plug is connected to the mains power and is electrically connected to the controller through the mains power rectifier circuit, which is used to convert the mains power into DC voltage.
[0018] Furthermore, the inlet of the high-pressure pump is connected to a PP filter via a pipeline. The inlet of the PP filter is connected to an inlet pipeline, through which external seawater enters the PP filter, filtering out large particles of impurities before being pumped into subsequent components by the high-pressure pump. This avoids equipment damage caused by blockage and extends the service life of the equipment.
[0019] Preferably, a water receiving tray is provided below the condenser tube to collect the condensate dripping from the condenser tube. The water receiving tray, PP filter, high-pressure pump, RO membrane assembly, water flow pipe, water flow generator, fan, vortex tube, condenser tube, controller, energy storage battery and power unit are all housed inside the casing. The side of the casing is hinged with an opening and closing door. The integrated casing facilitates the carrying of the seawater desalination equipment, and the opening and closing door facilitates personnel to take water from the water receiving tray and replace the RO membrane and PP filter element.
[0020] The specific working principle of the above-mentioned seawater desalination equipment is as follows:
[0021] When the seawater desalination equipment starts operating, the outside seawater enters the PP filter through the inlet pipeline for preliminary filtration, and then the high-pressure pump drives the seawater into the seawater inlet of the RO membrane assembly. The pressure regulating valve adjusts the pressure so that some seawater passes through the RO membrane. The salt and other impurities are filtered out by the RO membrane, and the purified water flows out through the purified water outlet at the bottom of the RO membrane assembly. The high-pressure concentrate enters the water flow pipe at the back of the blower through the concentrate outlet of the RO membrane assembly and is then discharged from the equipment through the drainage pipeline.
[0022] The high-pressure concentrated water flowing through the water pipe can drive the water turbine of the water turbine generator inside to rotate. The water turbine does work to generate current in the water turbine generator. The current enters the controller, and the controller stores the electrical energy in the energy storage battery, thus realizing the first stage of energy recovery of the high-pressure concentrated water.
[0023] High-pressure concentrate drives the turbine of a hydroelectric generator to generate electricity, while simultaneously driving the turbine of a coaxial fan to generate air. The air generated by the fan enters a vortex tube, where it creates a vortex that separates the airflow into two streams: a cold stream and a hot stream. The cold air stream enters the condenser tube from the cold end of the vortex tube, where the humid air around the condenser tube is pre-cooled and condenses into water droplets on the outer wall of the condenser tube, dripping into a water collection tray. This completes the process of air-to-water extraction, effectively and stably adding extra fresh water and achieving a second stage of energy recovery from the high-pressure concentrate, fully utilizing its energy.
[0024] Through the above technical solutions, this utility model has at least the following beneficial effects:
[0025] The seawater desalination equipment described in this application is compact, lightweight, and has a low failure rate. Through the coordinated design of structural components such as high-pressure pumps, RO membrane assemblies, water flow pipes, water flow generators, fans, vortex tubes, condenser tubes, controllers, energy storage batteries, and power supply units, it can achieve dual recovery of energy from high-pressure concentrate, further improving the energy recovery and utilization rate. The energy recovered and utilized in the first stage is used as electrical energy to power the equipment again, and the energy recovered and utilized in the second stage can extract water from the humid air, effectively and stably increasing the additional freshwater production. This full recovery and utilization of the energy from high-pressure concentrate makes the seawater desalination equipment energy-saving and efficient.
[0026] In addition, this seawater desalination equipment can achieve three-way drive through the drive circuit to switch the power of the seawater desalination equipment, which improves the performance of the seawater desalination equipment. Furthermore, by adapting to multiple power supply methods, it can be flexibly applied to a variety of usage scenarios. Attached Figure Description
[0027] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of this utility model in a schematic manner. Therefore, they only show the components related to this utility model.
[0028] Figure 1 This is a schematic diagram of the overall structure of the seawater desalination equipment described in the embodiments of this application;
[0029] Figure 2 This is a schematic diagram of the internal structure of the seawater desalination equipment described in the embodiments of this application;
[0030] Figure 3 This is a schematic diagram of the internal structure of the seawater desalination equipment described in the embodiments of this application from another perspective;
[0031] Figure 4 This is a circuit diagram of the drive circuit of the seawater desalination equipment described in the embodiments of this application;
[0032] Figure 5 This is a schematic diagram of the electrical control logic of the seawater desalination equipment described in the embodiments of this application. Detailed Implementation
[0033] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships are for illustrative purposes only and should not be construed as limiting this patent. If terms such as "first" and "second" are used for descriptive purposes only, they should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of the stated features. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0034] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] refer to Figures 1 to 3 The seawater desalination equipment includes a high-pressure pump 1, an RO membrane assembly 2, a water flow pipeline 3, a water flow generator, a fan 4, a vortex tube 5, a condenser tube 6, a controller, an energy storage battery, and a power supply unit.
[0036] The high-pressure pump 1 is electrically connected to the motor 101. The outlet of the high-pressure pump 1 is connected to the seawater inlet 201 of the RO membrane assembly 2 through a pipe. The RO membrane assembly 2 is equipped with an RO membrane. The bottom surface of the RO membrane assembly 2 is equipped with a clean water outlet 203, so that the clean water obtained after the seawater is filtered by the RO membrane can flow out smoothly from the clean water outlet 203.
[0037] The concentrate outlet 202 on the side of the RO membrane assembly 2 is connected to one end of the water flow pipe 3, and the other end of the water flow pipe 3 is connected to the drain pipe 7, so that the high-pressure concentrate flowing in the water flow pipe 3 can be smoothly discharged out of the equipment.
[0038] The water turbine of the water flow generator is installed inside the water flow pipe 3. The water flow generator is electrically connected to an energy storage battery via a controller, and the controller is electrically connected to a power supply unit.
[0039] The impeller of the fan 4 is coaxially connected to the water turbine of the water flow generator. That is, the water flow pipe 3 is fixedly connected to the back of the fan 4 casing. The rotating shaft of the water turbine of the water flow generator extends out of the water flow pipe 3 and is fixedly connected to the rotating shaft of the fan 4. This achieves the coaxial connection between the impeller of the fan 4 and the water turbine of the water flow generator. The air outlet of the fan 4 is connected to the air inlet of the vortex tube 5. The cold end of the vortex tube 5 is connected to the condenser tube 6.
[0040] The inlet of the high-pressure pump 1 is also connected to a PP filter 9 via a pipeline. The inlet of the PP filter 9 is connected to an inlet pipeline 10. Seawater from the outside enters the PP filter 9 through the inlet pipeline 10, filters out large particles of impurities, and then is pumped into subsequent components by the high-pressure pump 1. This can avoid equipment damage caused by equipment blockage and extend the service life of the equipment.
[0041] A water collection tray 8 is provided below the condenser tube 6 to collect the condensate dripping from the condenser tube 6. The water collection tray 8, PP filter 9, high-pressure pump 1, RO membrane assembly 2, water flow pipe 3, water flow generator, fan 4, vortex tube 5, condenser tube 6, controller, energy storage battery and power unit are all housed in the casing 11. The casing 11 has a hinged door 12 on its side. The integrated casing 11 facilitates the carrying of the seawater desalination equipment, and the door 12 facilitates personnel to take water from the water collection tray 8 and replace the RO membrane and PP filter.
[0042] The controller and power supply unit of the aforementioned seawater desalination equipment are electrically connected via a drive circuit, as shown in the reference. Figure 4The driving circuit includes an integrated circuit U1, a second resistor R2, a fourth resistor R4, a sixth resistor R6, a first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4, a fifth transistor Q5, a sixth transistor Q6, a first field-effect transistor V1, a second field-effect transistor V2, and a third field-effect transistor V3. The three signal output terminals of integrated circuit U1 are electrically connected to the input terminals of the series circuits composed of the first and second transistors Q1 and Q2, the third and fourth transistors Q3 and Q4, and the fifth and sixth transistors Q5 and Q6, respectively. The first field-effect transistor V1... The gate of the second field-effect transistor V2 is electrically connected to the output terminal of the series circuit composed of the first transistor Q1 and the second transistor Q2. The gate of the second field-effect transistor V2 is electrically connected to the output terminal of the series circuit composed of the third transistor Q3 and the fourth transistor Q4. The gate of the third field-effect transistor V3 is electrically connected to the output terminal of the series circuit composed of the fifth transistor Q5 and the sixth transistor Q6. The gate of the first field-effect transistor V1 is electrically connected to the drain of the first field-effect transistor V1 through the second resistor R2. The gate of the second field-effect transistor V2 is electrically connected to the drain of the second field-effect transistor V2 through the fourth resistor R4. The gate of the third field-effect transistor V3 is electrically connected to the drain of the third field-effect transistor V3 through the sixth resistor R6.
[0043] The working principle of this driving circuit is that the three output terminals of integrated circuit U1 control three driving units. Each driving unit is a circuit mainly composed of two transistors and one field-effect transistor.
[0044] The first transistor Q1, the third transistor Q3, and the fifth transistor Q5 are all NPN transistors, while the second transistor Q2, the fourth transistor Q4, and the sixth transistor Q6 are all PNP transistors. The collector of the first transistor Q1 is electrically connected to the emitter of the second transistor Q2, the collector of the third transistor Q3 is electrically connected to the emitter of the fourth transistor Q4, and the collector of the fifth transistor Q5 is electrically connected to the emitter of the sixth transistor Q6. The three signal output terminals of the integrated circuit U1 are electrically connected to the bases of the first transistor Q1, the third transistor Q3, and the fifth transistor Q5, respectively.
[0045] The driving circuit further includes a first Zener diode VD1, a second Zener diode VD2, a third Zener diode VD3, a fourth Zener diode VD4, a fifth Zener diode VD5, and a sixth Zener diode VD6. The first field-effect transistor V1 is electrically connected to its gate via an anti-series circuit composed of the first Zener diode VD1 and the second Zener diode VD2. Thus, the first Zener diode VD1 and the second Zener diode VD2 can regulate the trigger voltage of the first field-effect transistor V1. The second field-effect transistor V2 is connected via the third Zener diode... The anti-series circuit consisting of VD3 and the fourth Zener diode VD4 is electrically connected to the gate of the second field-effect transistor V2. The gate of the third field-effect transistor V3 is electrically connected to the gate of the third field-effect transistor V3 through the anti-series circuit consisting of the fifth Zener diode VD5 and the sixth Zener diode VD6. Similarly, the third Zener diode VD3 and the fourth Zener diode VD4 can regulate the trigger voltage of the second field-effect transistor V2, and the fifth Zener diode VD5 and the sixth Zener diode VD6 can regulate the trigger voltage of the third field-effect transistor V3.
[0046] The driving circuit further includes a first resistor R1, a third resistor R3, and a fifth resistor R5. The gate of the first field-effect transistor V1 is electrically connected to the output terminal of the series circuit composed of the first transistor Q1 and the second transistor Q2 through the first resistor R1. The gate of the second field-effect transistor V2 is electrically connected to the output terminal of the series circuit composed of the third transistor Q3 and the fourth transistor Q4 through the third resistor R3. The gate of the third field-effect transistor V3 is electrically connected to the output terminal of the series circuit composed of the fifth transistor Q5 and the sixth transistor Q6 through the fifth resistor R5.
[0047] like Figure 5 As shown, the controller is used to control the incoming and outgoing power, and the power supply unit is used to supply power to the entire equipment. The electrical energy is first stored in the energy storage battery. When the equipment is started, the energy storage battery supplies power to the equipment to complete the start-up and enable the seawater desalination equipment to operate normally.
[0048] The specific working principle of the above-mentioned seawater desalination equipment is as follows:
[0049] When the seawater desalination equipment starts to operate, the outside seawater enters the PP filter 9 through the inlet pipe 10 for preliminary filtration, and then the high-pressure pump 1 pumps the seawater into the seawater inlet 201 of the RO membrane assembly 2. The pressure regulating valve adjusts the pressure so that some seawater passes through the RO membrane. The salt and other impurities are filtered out by the RO membrane, and the purified water flows out through the purified water outlet 203 at the bottom of the RO membrane assembly 2. The high-pressure concentrated water enters the water flow pipe 3 on the back of the blower 4 through the concentrated water outlet 202 of the RO membrane assembly 2, and is finally discharged from the equipment through the drainage pipe 7.
[0050] The high-pressure concentrated water flowing through the water pipe 3 can drive the water turbine of the water flow generator inside to rotate. The water turbine does work to generate current in the water flow generator. The current enters the controller, and the controller stores the electrical energy in the energy storage battery, thereby realizing the first stage of energy recovery of the high-pressure concentrated water.
[0051] The high-pressure concentrate drives the turbine of the hydro generator to generate electricity, while simultaneously driving the turbine of the coaxial fan 4 to generate air. The air generated by the fan 4 enters the vortex tube 5, where it creates a vortex that separates the airflow into two streams: a cold stream and a hot stream. The cold airflow enters the condenser tube 6 from the cold end of the vortex tube 5, where the humid air around the condenser tube 6 is pre-cooled and condenses into water droplets that drip into the water collection tray 8. This completes the process of air-to-water extraction, effectively and stably increasing the amount of fresh water and achieving a second stage of energy recovery from the high-pressure concentrate, thus fully utilizing its energy.
[0052] As a specific embodiment, refer to Figure 5 The power supply unit may include a solar power generation module, a mains power module, and / or a diesel generator module, all of which are electrically connected to the controller. The solar power generation module includes a solar panel, an inverter, and a control box. The control box is electrically connected to the inverter, and the solar panel is electrically connected to the controller via the inverter. The solar panel converts solar energy into electrical energy, and the inverter converts direct current (DC) into alternating current (AC). The diesel generator module includes a diesel generator and a rectifier power supply circuit. The diesel generator is electrically connected to the controller via the rectifier power supply circuit. The mains power module includes a power plug and a mains power rectifier circuit. The power plug is connected to external mains power and is electrically connected to the controller via the mains power rectifier circuit, which converts mains power into DC voltage. The solar energy, diesel generator, and mains power are all existing technologies and will not be described in detail here.
[0053] Of the three power supply modules mentioned above, when the solar power module supplies power, the controller stores the electricity generated by the solar module in the energy storage battery, completing the charging process. When starting the equipment, the energy storage battery supplies power to power the equipment to complete the startup and enable normal operation. The high-pressure concentrate generated by the RO membrane assembly 2 of the seawater desalination equipment drives the turbine of the hydrogenerator, causing the hydrogenerator to generate current. The controller then stores this electrical energy in the energy storage battery, thus forming an energy recovery circuit. If it is a cloudy or rainy day and the energy storage battery is depleted, a diesel generator or mains power can be used to power the equipment and enable operation. This configuration of multiple power supply modules allows for various power supply methods for the seawater desalination equipment, improving its practicality and adapting it to various usage scenarios such as small islands, yachts, and coastal areas.
[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Based on the present utility model and the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A sea water desalination apparatus, characterized by: Includes a high-pressure pump (1), an RO membrane assembly (2), a water flow pipe (3), a water flow generator, a fan (4), a vortex tube (5), a condenser tube (6), a controller, an energy storage battery, and a power supply unit; The high-pressure pump (1) is electrically connected to a motor (101), and the outlet of the high-pressure pump (1) is connected to the seawater inlet (201) of the RO membrane assembly (2) through a pipe. The RO membrane assembly (2) is provided with a clean water outlet (203). The concentrate outlet (202) of the RO membrane assembly (2) is connected to one end of the water flow pipe (3), and the other end of the water flow pipe (3) is connected to the drain pipe (7); The water turbine of the water flow generator is installed inside the water flow pipe (3). The water flow generator is electrically connected to the energy storage battery through the controller, and the controller is electrically connected to the power supply unit. The impeller of the fan (4) is coaxially connected to the water turbine of the water flow generator. The air outlet of the fan (4) is connected to the air inlet of the vortex tube (5). The cold end of the vortex tube (5) is connected to a condenser tube (6).
2. A sea water desalination apparatus as claimed in claim 1, wherein: The controller and the power supply unit are electrically connected via a drive circuit. The drive circuit includes an integrated circuit, a second resistor, a fourth resistor, a sixth resistor, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a first field-effect transistor, a second field-effect transistor, and a third field-effect transistor. The three signal output terminals of the integrated circuit are electrically connected to the input terminals of the series circuits composed of the first and second transistors, the third and fourth transistors, and the fifth and sixth transistors, respectively. The gate of the field-effect transistor is electrically connected to the output terminal of the series circuit composed of the first and second transistors. The gate of the second field-effect transistor is electrically connected to the output terminal of the series circuit composed of the third and fourth transistors. The gate of the third field-effect transistor is electrically connected to the output terminal of the series circuit composed of the fifth and sixth transistors. The gate of the first field-effect transistor is electrically connected to the drain of the first field-effect transistor through the second resistor. The gate of the second field-effect transistor is electrically connected to the drain of the second field-effect transistor through the fourth resistor. The gate of the third field-effect transistor is electrically connected to the drain of the third field-effect transistor through the sixth resistor.
3. A sea water desalination apparatus as claimed in claim 2, wherein: The first, third, and fifth transistors are all NPN transistors, while the second, fourth, and sixth transistors are all PNP transistors. The collector of the first transistor is electrically connected to the emitter of the second transistor, the collector of the third transistor is electrically connected to the emitter of the fourth transistor, and the collector of the fifth transistor is electrically connected to the emitter of the sixth transistor. The three signal output terminals of the integrated circuit are electrically connected to the bases of the first, third, and fifth transistors, respectively.
4. A sea water desalination apparatus as claimed in claim 2, wherein: The driving circuit further includes a first Zener diode, a second Zener diode, a third Zener diode, a fourth Zener diode, a fifth Zener diode, and a sixth Zener diode. The first field-effect transistor is electrically connected to its gate through an anti-series circuit composed of the first and second Zener diodes. The second field-effect transistor is electrically connected to its gate through an anti-series circuit composed of the third and fourth Zener diodes. The third field-effect transistor is electrically connected to its gate through an anti-series circuit composed of the fifth and sixth Zener diodes.
5. A sea water desalination apparatus as claimed in claim 2, wherein: The driving circuit further includes a first resistor, a third resistor, and a fifth resistor. The gate of the first field-effect transistor is electrically connected to the output terminal of the series circuit composed of the first transistor and the second transistor through the first resistor. The gate of the second field-effect transistor is electrically connected to the output terminal of the series circuit composed of the third transistor and the fourth transistor through the third resistor. The gate of the third field-effect transistor is electrically connected to the output terminal of the series circuit composed of the fifth transistor and the sixth transistor through the fifth resistor.
6. A sea water desalination apparatus as claimed in claim 1, wherein: The power supply unit includes a solar power generation module, a mains power module, and / or a diesel generator module, all of which are electrically connected to the controller. The solar power generation module includes a solar panel, an inverter, and a control box. The control box is electrically connected to the inverter, and the solar panel is electrically connected to the controller through the inverter. The diesel generator module includes a diesel generator and a rectifier power supply circuit. The diesel generator is electrically connected to the controller through the rectifier power supply circuit. The mains power module includes a power plug and a mains power rectifier circuit. The power plug is connected to the mains power and is electrically connected to the controller through the mains power rectifier circuit, which is used to convert the mains power into DC voltage.
7. A sea water desalination apparatus as claimed in any one of claims 1 to 6, wherein: The inlet of the high-pressure pump (1) is also connected to a PP filter (9) via a pipeline, and the inlet of the PP filter (9) is connected to an inlet pipeline (10).
8. A sea water desalination apparatus as claimed in claim 7, wherein: A water receiving tray (8) is provided below the condenser tube (6). The water receiving tray (8), PP filter (9), high pressure pump (1), RO membrane assembly (2), water flow pipe (3), water flow generator, fan (4), vortex tube (5), condenser tube (6), controller, energy storage battery and power unit are all located inside the housing (11). The side of the housing (11) is hinged with an opening and closing door (12).