Zero-stale-water water purification system and water purification equipment

Abstract

The utility model relates to the technical field of water purification equipment, in particular to a zero-stale-water water purification system and water purification equipment, the zero-stale-water water purification system comprises a waterway system and an electric control system, the waterway system comprises a reverse osmosis filter element, a main waterway and a pure water waterway, the main waterway is connected with the raw water end of the reverse osmosis filter element, and the pure water waterway is connected with the electric control system. The pure water path is connected with the pure water end of the reverse osmosis filter element, a supercharging device located on the upstream side of the reverse osmosis filter element is arranged in the main water path, a backwashing loop is further arranged between the main water path and the pure water path, the backwashing loop is connected with a pure water container, and the pure water path is provided with a pressure detection device used for detecting the water outlet pressure of the pure water path; the electric control system is electrically connected with the supercharging device and the pressure detection device, a voltage regulating circuit acting on the supercharging device is arranged in the electric control system, and the pressure detection device detects the water outlet pressure of the pure water path so as to trigger the voltage regulating circuit to regulate the output voltage of the supercharging device; the output voltage of the supercharging device is reduced, and the purposes of vibration and noise reduction are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of water purification equipment, and in particular to a zero-stagnant-water purification system and water purification equipment. Background Technology

[0002] Existing water purifiers can not only directly produce pure water for users, but also perform pure water reflux foaming before producing pure water to backwash the reverse osmosis filter cartridge and reduce the TDS value of the first cup of water. However, when the water purifier is not producing water or the water flow rate is low, the water purifier uses pure water reflux to backwash the reverse osmosis filter cartridge. The booster pump still operates at the rated power when producing pure water. Under the rated voltage, the booster pump motor speed is high, which leads to increased vibration amplitude of the booster pump and generates greater noise.

[0003] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0004] This invention addresses the problem mentioned above where, when the water purifier is not dispensing water or the water flow rate is low, the water purifier uses pure water recirculation to backwash the reverse osmosis filter, and the booster pump still operates at its rated power when preparing pure water. Under the rated voltage, the booster pump motor speed is high, leading to increased vibration amplitude and significant noise. This invention proposes a zero-stagnant-water purification system and water purification equipment.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] Zero-stagnant-water purification system includes:

[0007] A water system includes a reverse osmosis filter cartridge, a main water path connected to the raw water end of the reverse osmosis filter cartridge, and a pure water path connected to the pure water end of the reverse osmosis filter cartridge. The main water path is equipped with a booster device located upstream of the reverse osmosis filter cartridge. A backwashing circuit is also provided between the main water path and the pure water path. The connection point of the backwashing circuit in the main water path is located upstream of the booster device, and the connection point of the backwashing circuit in the pure water path is located downstream of the pure water end of the reverse osmosis filter cartridge. The backwashing circuit is connected to a pure water container. The pure water path is equipped with a pressure detection device for detecting the outlet pressure of the pure water path.

[0008] An electronic control system is electrically connected to the booster device and the pressure detection device. The electronic control system is equipped with a pressure regulating circuit that acts on the booster device. The pressure detection device detects the outlet pressure of the pure water circuit to trigger the pressure regulating circuit to adjust the output voltage of the booster device.

[0009] As described above, the zero-stagnant-water purification system includes an electrical control system comprising a power input module, a main control board, and a step-down adapter board electrically connected between the power input module and the main control board. The voltage regulation circuit is integrated into the step-down adapter board. The main control board acquires the outlet pressure of the pure water circuit through the pressure detection device and triggers the step-down adapter board to adjust the output voltage of the booster device based on the outlet pressure. When the outlet pressure of the pure water circuit is less than a preset pressure threshold, the booster device outputs a first operating voltage through the voltage regulation circuit. When the outlet pressure of the pure water circuit is greater than the preset pressure threshold, the booster device outputs a second operating voltage through the voltage regulation circuit, the second operating voltage being less than the first operating voltage.

[0010] In the zero-stagnant-water purification system described above, the first input terminal of the main control board is connected to the first output terminal of the step-down adapter board to receive a first signal from the step-down adapter board; the first output terminal of the main control board is connected to the first input terminal of the booster device to output a first operating voltage to the booster device; the second input terminal of the main control board is connected to the second output terminal of the step-down adapter board to receive a second signal from the step-down adapter board; and the second output terminal of the main control board is connected to the second input terminal of the booster device to output a second operating voltage to the booster device.

[0011] As described above, in the zero-stagnant-water purification system, the backwash circuit includes a return water circuit connected to the main water circuit and a makeup water circuit connected to the pure water circuit. The return water circuit and the makeup water circuit converge to form the backwash main circuit. The backwash main circuit is connected to the pure water container. The return water circuit is equipped with a first one-way valve and a return valve. The first one-way valve is used to guide the liquid from the pure water container to the main water circuit in a one-way manner. The return valve is electrically connected to the electronic control system.

[0012] As described above, the zero-stagnant-water purification system includes a main water circuit comprising a connected inlet water circuit and a purified water circuit. The water circuit system further includes a water storage container, a pre-filter, and an inlet valve disposed in the inlet water circuit. The pre-filter and the inlet valve are disposed adjacently between the water storage container and the pressurization device. The purified water circuit is formed between the pre-filter and the reverse osmosis filter. The inlet valve is electrically connected to the electrical control system.

[0013] In the zero-stagnant-water purification system described above, the pure water container is located inside the water storage container, and the pure water container undergoes elastic deformation under stress.

[0014] As described above, the zero-stagnant-water purification system further includes a drainage circuit connected to the drain end of the reverse osmosis filter element. The drainage circuit includes a first drainage path, a second drainage path connected to the first drainage path, and a third drainage path. The second drainage path is used to discharge wastewater, and the third drainage path is connected to the water storage container. A water quality detector is installed in the water storage container. A first drain valve is installed in the second drainage path, and a second check valve is installed in the third drainage path. The second check valve is used to guide liquid unidirectionally from the first drainage path to the third drainage path. The first drain valve and the water quality detector are electrically connected to the electrical control system.

[0015] As described above, in the zero-stagnant-water purification system, a second drain valve is provided in the first drainage water path, and the second drain valve is electrically connected to the electrical control system.

[0016] As described above, in the zero-stagnant-water purification system, a third one-way valve is provided in the pure water circuit upstream of the pressure detection device. The third one-way valve is used to guide the water in the pure water circuit unidirectionally to the pressure detection device. The pure water circuit is also provided with a high-pressure switch electrically connected to the electrical control system. The high-pressure switch is integrated with the pressure detection device; or, the high-pressure switch is arranged adjacent to the pressure detection device in the pure water circuit.

[0017] This utility model also provides a water purification device, including the water purification system described above.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] The pressure detection device monitors the outlet pressure of the pure water circuit in real time, and the measured outlet pressure signal is transmitted to the electronic control system. The electronic control system compares the outlet pressure signal received from the pressure detection device with a preset pressure threshold, and triggers the voltage regulation circuit to output a first working voltage or a second working voltage to the booster device according to the comparison result. This allows the booster device to output the first working voltage or the second working voltage accordingly, thereby regulating the voltage of the booster device to reduce its output voltage, thereby reducing the operating power of the booster device, reducing the vibration of the motor in the booster device, and achieving the purpose of vibration reduction and noise reduction.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

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

[0022] Figure 2This is a schematic diagram of the electronic control system of this utility model;

[0023] Figure 3 This is a circuit structure diagram of one embodiment of the electronic control system of this utility model;

[0024] Figure 4 This is a schematic diagram of the water system of this utility model in pure water production mode;

[0025] Figure 5 This is a schematic diagram of the water system of this utility model in water replenishment mode;

[0026] Figure 6 This is a schematic diagram of the water system of this utility model in backwashing mode. Detailed Implementation

[0027] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] This utility model provides a water purification device, which is equipped with a water purification system, such as... Figure 1As shown in Figure 6, the water purification system includes a water system 100 and an electrical control system 200. The water system 100 includes a reverse osmosis filter element 110, a main water path, and a pure water path 130. The reverse osmosis filter element 110 includes a raw water end, a pure water end, and a drain end. The main water path is connected to the raw water end of the reverse osmosis filter element 110 to input water into the reverse osmosis filter element 110. The pure water path 130 is connected to the pure water end of the reverse osmosis filter element 110 to output pure water to the outside. A booster device 121 is provided in the main water path upstream of the reverse osmosis filter element 110. A backwashing circuit is also provided between the main water path and the pure water path 130. The backwashing circuit is connected in the main water path... The point is located upstream of the pressurization device 121. The connection point of the backwash circuit in the pure water circuit 130 is located downstream of the pure water end of the reverse osmosis filter element 110. The backwash circuit is connected to a pure water container 150. The pure water in the pure water circuit 130 can be directly output for user use, or the pure water can flow to the pure water container 150 through the backwash circuit. The pure water in the pure water container 150 can flow back to the reverse osmosis filter element 110 through the backwash circuit for pure water membrane treatment to reduce the TDS value of the first cup of water and achieve zero stagnant water and zero wastewater in the water purification system. The pure water circuit 130 is equipped with a pressure detection device 131. Located downstream of the pure water end of the reverse osmosis filter element 110, the device is used to detect the outlet pressure of the pure water circuit 130. The electrical control system 200 is electrically connected to the booster device 121 and the pressure detection device 131. The electrical control system 200 includes a pressure regulating circuit that acts on the booster device 121. The pressure detection device 131 detects the outlet pressure of the pure water circuit 130, triggering the pressure regulating circuit to adjust the output voltage of the booster device 121. The pressure detection device 131 continuously monitors the outlet pressure of the pure water circuit 130 and feeds back the measured outlet pressure signal to the electrical control system 200. The electrical control system 200 then... The outlet water pressure signal received at the force detection device 131 is compared with a preset pressure threshold, and the pressure regulating circuit is triggered to output a first working voltage or a second working voltage to the pressure boosting device 121 according to the comparison result, so that the pressure boosting device 121 outputs the first working voltage or the second working voltage accordingly; if the outlet water pressure is less than the preset pressure threshold, the pressure regulating circuit controls the pressure boosting device 121 to output the first working voltage; if the outlet water pressure is greater than the preset pressure threshold, the pressure regulating circuit controls the pressure boosting device 121 to output the second working voltage, the second working voltage being less than the first working voltage;The voltage of the booster unit 121 is regulated to reduce its output voltage, thereby reducing its operating power and minimizing motor vibration, thus achieving vibration reduction and noise reduction.

[0031] Optionally, the booster device 121 may be an existing booster pump.

[0032] like Figure 2 and Figure 3 As shown, the electronic control system 200 includes a power input module 210, a main control board 220, and a step-down adapter board 230 electrically connected between the power input module 210 and the main control board 220. The voltage regulation circuit is integrated into the step-down adapter board 230. The main control board 220 obtains the outlet water pressure of the pure water circuit 130 through the pressure detection device 131, and triggers the step-down adapter board 230 to adjust the output voltage of the booster device 121 according to the outlet water pressure. Furthermore, the first input terminal 221 of the main control board is connected to the step-down adapter board 230. The first output terminal 231 of the adapter board is connected to receive the first signal from the step-down adapter board 230; the first output terminal 223 of the main control board is connected to the first input terminal 1211 of the booster device, and is used to output a first operating voltage to the booster device 121; the second input terminal 222 of the main control board is connected to the second output terminal 232 of the step-down adapter board, and is used to receive the second signal from the step-down adapter board 230; the second output terminal 224 of the main control board is connected to the second input terminal 1212 of the booster device, and is used to output a first operating voltage to the booster device 121. 1. Output a second working voltage; In practical applications, the main control board 220 and the step-down adapter board 230 have a communication connection. The main control board 220 acquires the outlet water pressure of the pure water circuit 130 measured from the pressure detection device 131, and compares the measured outlet water pressure with a preset pressure threshold to obtain a comparison result. If the measured outlet water pressure is less than the preset pressure threshold, the main control board 220 is triggered to send a no-pressure-reduction command to the step-down adapter board 230, and the step-down adapter board 230 sends a command to the main control board 220 to output the first working voltage. Upon receiving a first signal indicating the operating voltage (i.e., the rated voltage of the booster device 121), the main control board 220 outputs the first operating voltage to the booster device 121. If the measured water pressure is greater than a preset pressure threshold, the main control board 220 is triggered to send a pressure reduction command to the pressure reduction adapter 230. The pressure reduction adapter 230 sends a second signal to the main control board 220 for outputting the second operating voltage. Upon receiving the second signal, the main control board 220 outputs the second operating voltage to the booster device 121.

[0033] As some optional embodiments of this utility model, in practical applications, the first working voltage can be the rated voltage of the booster device 121, and the second working voltage can be 50% to 85% of the first working voltage. While reducing voltage and noise, this ensures the normal operation of the booster device 121 and enables the voltage regulating circuit to be compatible with various booster devices 121. Optionally, the second working voltage can be set to one of 50%, 60%, 70%, 80%, and 85% of the first working voltage. More preferably, the second working voltage can be 50% to 80% of the first working voltage.

[0034] Optionally, the pressure detection device 131 can use an existing pressure sensor, and the main control board 220 and the step-down adapter board 230 can use existing integrated circuit boards, which will not be described in detail here.

[0035] In some alternative embodiments, the power input module 210 includes a power adapter 211 connected in series with the step-down adapter board 230, and the main control board 220 connected in series with the step-down adapter board 230. The main control board 220 is also connected to the neutral wire of the power input module 210 to protect the electronic control system 200. In practical applications, the power adapter 211 can be connected to a household circuit or a 220V AC circuit to provide power to the electronic control system 200.

[0036] On the other hand, such as Figure 1 , 5 As shown in Figure 6, the backwash circuit includes a return water path 141 connected to the main water path and a makeup water path 142 connected to the pure water path 130. The return water path 141 and the makeup water path 142 converge to form a backwash main path 143. The backwash main path 143 is connected to the pure water container 150. The return water path 141 is equipped with a first one-way valve 144 and a return valve 145. The first one-way valve 144 is used to guide the liquid from the pure water container 150 to the main water path in a one-way manner. The return valve 145 is electrically connected to the electronic control system 200. 145 controls the opening and closing of the return water path 141; in practical applications, the pure water in the pure water path 130 can flow to the pure water container 150 for storage via the water replenishment path 142. When the return valve 145 is opened and the pressurization device 121 is running at the second working voltage, the pure water in the pure water container 150 is pumped to the reverse osmosis filter element 110 along the backwash main path 143 and the return water path 141, and the pure water backflow is restricted by the first one-way valve 144 to ensure that the reverse osmosis filter element 110 can perform pure water membrane soaking normally, so as to reduce the TDS value of the first cup of water.

[0037] In other alternative embodiments, such as Figure 1 and Figure 4 As shown, the main water circuit includes a connected inlet water circuit 120 and a purified water circuit 170. The water system 100 also includes a water storage container 160, a pre-filter 122, and an inlet valve 123 disposed in the inlet water circuit 120. The water storage container 160 is connected to the inlet water circuit 120 and can pre-store raw water to improve the efficiency of raw water input into the water system 100. The pre-filter 122 and the inlet valve 123 are disposed adjacently between the water storage container 160 and the pressurization device 121. The pre-filter 122 and the reverse osmosis filter 110 form the purified water circuit 170. The inlet valve 123 is electrically connected to the electrical control system 200 and is used to control the opening and closing of the inlet water circuit 120. In actual operation... In application, when the water purification system is normally producing pure water, the inlet valve 123 is opened by the electronic control system 200, and the booster device 121 operates at the first working voltage, so that the raw water flows along the inlet water path 120 through the pre-filter 122 for primary filtration, and the purified water path 170 is formed between the outlet end of the pre-filter 122 and the raw water end of the reverse osmosis filter 110. The purified water formed by the primary filtration of the pre-filter 122 is guided through the purified water path 170 to the reverse osmosis filter 110 for secondary filtration, so as to facilitate the preparation of pure water that meets drinking standards. Optionally, the pre-filter 122 can be a PP cotton filter, an activated carbon filter, a composite filter, etc.; the inlet valve 123 can be a pressure reducing valve or a solenoid valve.

[0038] like Figure 1 As shown, the pure water container 150 is disposed inside the water storage container 160. The pure water container 150 undergoes elastic deformation under force. The pure water container 150 can be configured as an elastic water bladder. The elastic water bladder undergoes elastic deformation due to changes in water pressure inside and outside. The water bladder expands elastically as the amount of water stored increases. Through its own elastic action, combined with the extraction action of the pressurizing device 121, the pure water inside is supplied to the return water path 141. At the same time, the elastic water bladder can increase its contraction and deformation due to the water pressure inside the water storage container 160, so as to further increase the water pressure in the return water path 141 and increase the return flow rate of pure water.

[0039] like Figure 1 and Figure 4As shown, the water system 100 further includes a drainage circuit connected to the drain end of the reverse osmosis filter element 110. The drainage circuit includes a first drainage path 181, a second drainage path 182 connected to the first drainage path 181, and a third drainage path 183. The second drainage path 182 is used to discharge wastewater to the outside. The third drainage path 183 is connected to the water storage container 160. The water storage container 160 is equipped with a water quality detector 161, which is used to detect the TDS value of the raw water. The second drainage path 182 is equipped with a first drain valve 185, which is used to control the opening and closing of the second drainage path 182. The third drainage path 183 is equipped with a second one-way valve 186, which is used to guide liquid unidirectionally from the first drainage path 181 to the third drainage path 183. 5. The water quality detector 161 is electrically connected to the electrical control system 200. In practical applications, the drain end of the reverse osmosis filter element 110 discharges wastewater towards the first drain channel 181. When the first drain valve 185 is open, the wastewater can be discharged through the second drain channel 182. When the first drain valve 185 is closed, the wastewater can flow unidirectionally through the third drain channel 183 into the water storage container 160 to achieve wastewater recycling. After mixing with the raw water, the wastewater is reintroduced into the pre-filter element 122 through the inlet channel 120 for further filtration, thereby improving water utilization. In addition, the TDS value of the water in the water storage container 160 can be detected in real time by the water quality detector 161. When the TDS value of the water in the water storage container 160 is detected to be too high, the signal is fed back to the electrical control system 200, and the electrical control system 200 controls the first drain valve 185 to open to discharge wastewater. Optionally, the first drain valve 185 can be a solenoid valve.

[0040] Furthermore, a second drain valve 184 is provided in the first drainage water passage 181, and the second drain valve 184 is electrically connected to the electrical control system 200; the second drain valve 184 can be a solenoid valve or a wastewater ratio / proportional valve, used to control the drainage flow of the first drainage water passage 181.

[0041] Further optionally, in order to simplify the water path, the third drainage water path 183 is connected to the inlet water path 120, and the connection point of the third drainage water path 183 in the inlet water path 120 is located on the upstream side of the water storage container 160.

[0042] In other embodiments, such as Figure 1As shown, the pure water circuit 130 is equipped with a third one-way valve 132 located upstream of the pressure detection device 131. The third one-way valve 132 is used to guide the water in the pure water circuit 130 unidirectionally to the pressure detection device 131. The pure water circuit 130 is also equipped with a high-pressure switch 133 electrically connected to the electronic control system 200. The high-pressure switch 133 is used to control the opening and closing of the booster device 121. In practical applications, when the pressure detection device 131 detects that the water pressure is less than a preset pressure threshold, the electronic control system 200 triggers the high-pressure switch 133 to close, thereby triggering the booster device 121 to start, realizing the normal production of pure water by the water purification system. When the pressure detection device 131 detects that the water pressure is greater than the preset pressure threshold, the electronic control system 200 triggers the high-pressure switch 133 to open, thereby triggering the booster device 121 to close, and the water purification system is in a shutdown state.

[0043] Optionally, the high-pressure switch 133 is integrated with the pressure detection device 131; or, the high-pressure switch 133 and the pressure detection device 131 are independently configured, and the high-pressure switch 133 is located downstream of the pressure detection device 131.

[0044] In practical applications, the pure water circuit 130 can be equipped with a water intake switch 300 located downstream of the pressure detection device 131. The water intake switch 300 is used to adjust the outlet water pressure of the pure water circuit 130. Based on the above water purification system, the water purification system has at least the following operating modes:

[0045] Pure water production mode: such as Figure 4 As shown, when the water dispensing switch 300 is opened, the pressure in the pure water circuit 130 drops. The outlet pressure measured by the pressure detection device 131 is less than a preset pressure threshold. The high-pressure switch 133 closes, and the electrical control system 200 controls the booster device 121 to operate at the first working voltage (e.g., 24V). Simultaneously, the inlet valve 123 opens, and the booster device 121 draws raw water from the storage container 160. This raw water is then filtered sequentially through the pre-filter cartridge 122 and the reverse osmosis filter cartridge 110 to produce pure water. The pure water is discharged from the water dispensing switch 300 through the pure water circuit 130 for user use. The second drain valve 184 and the first drain valve 185 open, allowing wastewater to be discharged through the first drain circuit 181 and the second drain circuit 182. It should be noted that the preset pressure threshold can be set according to the water pressure required to output pure water when the water purification system is in pure water production mode.

[0046] Hydration mode: such as Figure 5As shown, the water inlet switch 300 is closed and the water inlet valve 123 is opened. The pressure in the pure water circuit 130 rises. The outlet pressure measured by the pressure detection device 131 is greater than the preset pressure threshold, and the outlet pressure measured by the pressure detection device 131 is less than the disconnection pressure threshold of the high pressure switch 133. The high pressure switch 133 remains closed. The electronic control system 200 controls the booster device 121 to operate at the second working voltage (e.g., 16V). Pure water flows through the water replenishment circuit 142 into the pure water container 150 until it continues for a fixed time or until the pure water container 150 is full. After the water replenishment is completed, the water inlet valve 123 and the booster device 121 are closed.

[0047] If the water pressure measured by the pressure detection device 131 reaches the disconnection pressure threshold of the high-pressure switch 133, the high-pressure switch 133 will disconnect, thereby shutting down the booster device 121 and protecting the water purification system.

[0048] Backwash mode: such as Figure 6 As shown, after water replenishment is completed, the water purification system can switch to backwash mode, keeping the water inlet switch 300 closed, closing the inlet valve 123, and opening the booster device 121 and the return valve 145 for a fixed time. The booster device 121 maintains the second working voltage, and the pure water in the pure water container 150 flows back to the reverse osmosis filter element 110 through the backwash main channel 143, the return water channel 141, and the inlet water channel 120 in sequence, so as to realize pure water return membrane, reduce the TDS value of the first cup of water, and at the same time, since the booster device 121 maintains the second working voltage, it is beneficial to reduce noise when the water purification system is in water replenishment mode and backwash mode.

[0049] A small amount of pure water is prepared in the water replenishment mode and stored in the pure water container 150 for later use. When switching to the backwashing mode, pure water is directly pumped from the pure water container 150 to the reverse osmosis filter element 110 for backwashing through the pressurization device 121. This improves the backwashing efficiency of the reverse osmosis filter element 110, thereby increasing the pure water production efficiency after the water purification system restarts and avoiding excessively high TDS values ​​in the first cup of water. After the water purification system has been running in the water replenishment mode for a fixed time or has produced a fixed amount of pure water, the water purification system can switch to the backwashing mode. The pressurization device 131 maintains the output of the second working voltage, so that the pressurization device 131 maintains low-pressure operation in both the water replenishment mode and the backwashing mode, which helps to reduce noise and energy consumption.

[0050] In one embodiment, the fixed amount of pure water can be set according to the capacity of the pure water container 150, and the water level in the pure water container 150 is detected in real time. If the water level reaches the set value, it means that the pure water container 150 is full. At this time, the inlet valve 123 can be closed by the electronic control system 200, and the water purification system can be switched to the backwash mode. In the backwash mode, the booster device 121 maintains the second working voltage. Optionally, a liquid level sensor can be installed in the pure water container 150 to detect the water level in the pure water container 150. The liquid level sensor is electrically connected to the electronic control system 200 to feed back the water level in the pure water container 150 to the electronic control system 200 in real time.

[0051] In addition, the pure water container 150 is configured as an elastic water bladder and is located inside the water storage container 160. When the water purification system is in the backwashing mode, the elastic water bladder is squeezed by the water pressure inside the water storage container 160 and further contracts and deforms to increase the pure water return pressure and water flow in the backwashing main channel 143. While the booster device 121 maintains a low second working voltage, it enhances the flushing effect of pure water return on the reverse osmosis filter element 110, thereby achieving the purpose of reducing the TDS value of the first cup of water.

[0052] Wastewater recycling models: such as Figure 4 As shown, the first drain valve 185 is closed and the second drain valve 184 is opened. The wastewater output from the drain end of the reverse osmosis filter element 110 flows unidirectionally through the first drain water passage 181 and the third drain water passage 183 into the water storage container 160.

[0053] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A zero-stagnant-water purification system, characterized in that, include: A water system (100) includes a reverse osmosis filter element (110), a main water path connected to the raw water end of the reverse osmosis filter element (110), and a pure water path (130) connected to the pure water end of the reverse osmosis filter element (110). The main water path is provided with a booster device (121) located upstream of the reverse osmosis filter element (110). A backwashing circuit is also provided between the main water path and the pure water path (130). The connection point of the backwashing circuit in the main water path is located upstream of the booster device (121), and the connection point of the backwashing circuit in the pure water path (130) is located downstream of the pure water end of the reverse osmosis filter element (110). The backwashing circuit is connected to a pure water container (150). The pure water path (130) is provided with a pressure detection device (131), which is used to detect the outlet pressure of the pure water path (130). An electrical control system (200) is electrically connected to the booster device (121) and the pressure detection device (131). The electrical control system (200) is equipped with a pressure regulating circuit that acts on the booster device (121). The pressure detection device (131) detects the outlet pressure of the pure water circuit (130) to trigger the pressure regulating circuit to adjust the output voltage of the booster device (121).

2. The zero-stagnant-water purification system as described in claim 1, characterized in that, The electronic control system (200) includes a power input module (210), a main control board (220), and a step-down adapter board (230) electrically connected between the power input module (210) and the main control board (220). The voltage regulation circuit is integrated into the step-down adapter board (230). The main control board (220) obtains the outlet pressure of the pure water circuit (130) through the pressure detection device (131) and triggers the step-down adapter board (230) to adjust the output voltage of the booster device (121) according to the outlet pressure. When the outlet pressure of the pure water circuit (130) is less than the preset pressure threshold, the pressure regulating circuit controls the booster device (121) to output a first working voltage; when the outlet pressure of the pure water circuit (130) is greater than the preset pressure threshold, the pressure regulating circuit controls the booster device (121) to output a second working voltage, the second working voltage being less than the first working voltage.

3. The zero-stagnant-water purification system as described in claim 2, characterized in that, The first input terminal (221) of the main control board is connected to the first output terminal (231) of the step-down adapter board, and is used to receive the first signal of the step-down adapter board (230); The first output terminal (223) of the main control board is connected to the first input terminal (1211) of the booster device, and is used to output a first working voltage to the booster device (121); The second input terminal (222) of the main control board is connected to the second output terminal (232) of the step-down adapter board, and is used to receive the second signal of the step-down adapter board (230); The second output terminal (224) of the main control board is connected to the second input terminal (1212) of the booster device, and is used to output a second working voltage to the booster device (121).

4. The zero-stagnant-water purification system as described in claim 1, characterized in that, The backwash circuit includes a return water path (141) connected to the main water path and a makeup water path (142) connected to the pure water path (130). The return water path (141) and the makeup water path (142) converge to form a backwash main path (143). The backwash main path (143) is connected to the pure water container (150). The return water path (141) is provided with a first check valve (144) and a return valve (145). The first check valve (144) is used to guide the liquid from the pure water container (150) to the main water path in a one-way manner. The return valve (145) is electrically connected to the electrical control system (200).

5. The zero-stagnant-water purification system as described in claim 1, characterized in that, The main water circuit includes a connected inlet water circuit (120) and a purified water circuit (171). The water circuit system (100) also includes a water storage container (160), a pre-filter (122), and an inlet valve (123) disposed in the inlet water circuit (120). The pre-filter (122) and the inlet valve (123) are disposed adjacently between the water storage container (160) and the pressurization device (121). The purified water circuit (171) is formed between the pre-filter (122) and the reverse osmosis filter (110). The inlet valve (123) is electrically connected to the electrical control system (200).

6. The zero-stagnant-water purification system as described in claim 5, characterized in that, The pure water container (150) is disposed inside the water storage container (160), and the pure water container (150) undergoes elastic deformation under force.

7. The zero-stagnant-water purification system as described in claim 5, characterized in that, The water system (100) further includes a drainage circuit connected to the drain end of the reverse osmosis filter (110). The drainage circuit includes a first drainage water path (181), a second drainage water path (182) connected to the first drainage water path (181), and a third drainage water path (183). The second drainage water path (182) is used to discharge wastewater. The third drainage water path (183) is connected to the water storage container (160). The water storage container (160) is equipped with a water quality detector (161). The second drainage water path (182) is equipped with a first drain valve (185). The third drainage water path (183) is equipped with a second one-way valve (186). The second one-way valve (186) is used to guide liquid from the first drainage water path (181) to the third drainage water path (183). The first drain valve (185) and the water quality detector (161) are electrically connected to the electrical control system (200).

8. The zero-stagnant-water purification system as described in claim 7, characterized in that, The first drainage channel (181) is provided with a second drainage valve (184), which is electrically connected to the electrical control system (200).

9. The zero-stagnant-water purification system as described in claim 1, characterized in that, The pure water circuit (130) is provided with a third check valve (132) located upstream of the pressure detection device (131). The third check valve (132) is used to guide the water in the pure water circuit (130) to the pressure detection device (131) in a one-way manner. The pure water circuit (130) is also provided with a high-voltage switch (133) electrically connected to the electrical control system (200). The high-voltage switch (133) and the pressure detection device (131) are integrated into each other; Alternatively, the high-pressure switch (133) and the pressure detection device (131) may be arranged adjacent to each other in the pure water circuit (130).

10. A water purification device, characterized in that, Including the water purification system as described in any one of claims 1-9.

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