Novel environment-friendly zero wastewater discharge system for kitchen

Abstract

The utility model relates to a novel environment-friendly zero wastewater discharge system for a kitchen, which relates to the technical field of water treatment and comprises a storage device, a filter component, a driving device, a filter element device and a control device, the filter element device is used for generating pure water and wastewater and comprises a pure water outlet end and a wastewater outlet end; the pure water outlet end is provided with a pure water electromagnetic valve for controlling the discharge of pure water and a detection device for detecting the quality of the pure water and outputting a detection signal; the control device is used for controlling the pure water outlet end of the filter element device to output the pure water to the storage device and controlling the wastewater outlet end to output the wastewater to the storage device, and when the detection signal does not exceed the reference parameter, the control device opens the pure water electromagnetic valve to output the pure water; and when the detection signal exceeds the reference parameter, the control device controls the pure water electromagnetic valve to be closed and enables the pure water to be output to the storage device. The water purifier has the effects of reducing the energy consumption of the water purifier and improving the water quality of kitchen water.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a novel environmentally friendly zero-wastewater discharge system for kitchens. Background Technology

[0002] Drinking water treatment is an important process to ensure water quality safety. It involves a variety of physical, chemical and biological technologies to remove or reduce harmful substances such as residual chlorine, heavy metals, discoloration and odor in water.

[0003] A water purifier is a device used for drinking water treatment. It includes an inlet component for introducing tap water, a filter component for filtering tap water, a drinking water component for using the pure water filtered by the filter component, and a discharge component for discharging the wastewater filtered by the filter component. In the process of filtering tap water, a typical water purifier will produce pure water and wastewater. Due to the pressure difference on both sides of the filter component, the pure water and wastewater mix, resulting in a higher TDS value for the first cup of water when reused. Therefore, it is necessary to clean the filter component with pure water.

[0004] When pure water is used to clean the filter components, neither the cleaned pure water nor the wastewater can be recycled and is directly discharged, thus increasing the waste of water resources. Utility Model Content

[0005] In order to reduce the energy consumption of water purifiers and improve the water quality in the kitchen, this utility model provides a new type of environmentally friendly zero-wastewater discharge system for kitchens.

[0006] Firstly, this utility model provides a novel environmentally friendly zero-wastewater discharge system for kitchens, employing the following technical solution:

[0007] A novel environmentally friendly zero-wastewater discharge system for kitchens includes a storage device connected end to end in sequence, a filter assembly for filtering water in the storage device, a drive device for driving the water in the storage device to filter, a filter cartridge device for filtering water in the filter assembly, and a control device.

[0008] The filter cartridge device is used to generate pure water and wastewater, and the filter cartridge device includes a pure water outlet and a wastewater outlet.

[0009] The filter element device is equipped with a pure water solenoid valve for controlling the discharge of pure water at the pure water outlet end, and a detection device for detecting the pure water quality and outputting a detection signal is also provided at the pure water outlet end of the filter element device.

[0010] The control device is used to control the pure water outlet to output pure water to the storage device, and the control device is used to control the wastewater outlet of the filter device to output wastewater to the storage device. When the detection signal does not exceed the preset reference parameter, the control device opens the pure water solenoid valve to output the pure water generated by the pure water outlet of the filter device.

[0011] When the detection signal exceeds the preset reference parameter, the control device controls the pure water solenoid valve to close and outputs the pure water generated at the pure water outlet of the filter element to the storage device.

[0012] By adopting the above technical solution, the water in the storage device is filtered through the filter cartridge to form pure water and wastewater. The wastewater is then returned to the storage device for recycling and purification. When users use tap water, the wastewater produced by the water purifier can be mixed with the tap water, thus achieving zero wastewater discharge and reducing the energy consumption of the water purifier. Furthermore, the pure water quality is monitored in real time by the detection device. When the parameters detected by the detection device exceed the benchmark parameters, the filter cartridge is cleaned by the control device, and pure water that meets the benchmark parameters is discharged. This removes harmful substances such as residual chlorine, heavy metals, discoloration, and odor from tap water, thereby improving water quality.

[0013] Optionally, the control device includes a wastewater solenoid valve for discharging wastewater generated by the filter element device and a pure water bypass valve for cleaning the filter element device.

[0014] The wastewater solenoid valve is connected to the concentrate return port of the storage device;

[0015] The pure water bypass valve is connected to the storage device and the pure water outlet respectively;

[0016] When the detection signal does not exceed the preset reference parameter, the pure water bypass valve does not open and the pure water solenoid valve is opened to output the pure water generated at the pure water outlet.

[0017] When the detection signal exceeds the preset reference parameter, the pure water solenoid valve is closed and the pure water bypass valve is opened to output the pure water generated at the pure water outlet to the storage device.

[0018] By adopting the above technical solution, when the parameters detected by the detection device exceed the reference parameters, the water replenishment device continues to replenish water to the storage device, thereby realizing the circulation purification of water and reducing the water concentration in the storage tank to facilitate the RO membrane filter to produce pure water that meets the reference parameters.

[0019] Optionally, the filter assembly includes a first filter element assembly and a second filter element assembly that are interconnected, and the drive device is disposed between the first filter element assembly and the second filter element assembly;

[0020] The first filter element assembly is connected to the water inlet on the storage device.

[0021] By adopting the above technical solution, the water in the storage device is filtered preferentially through the filtration component, thereby filtering out the particles carried by the water in the storage device.

[0022] Optionally, the pure water solenoid valve is equipped with a pure water faucet, and a post-carbon filter element for filtering pure water is provided between the pure water faucet and the pure water solenoid valve.

[0023] A pressure stabilizing device for stabilizing pure water pressure is provided between the post-carbon filter and the pure water solenoid valve. The pressure stabilizing device is connected to the pure water solenoid valve and the post-carbon filter respectively.

[0024] By adopting the above technical solution, the pressure stabilizing device can stabilize the water pressure of pure water, thereby stabilizing the amount of pure water between the post-carbon filter and the pure water solenoid valve, and providing sufficient water flow when the pure water faucet is turned on. The pure water is then filtered through the post-carbon filter, thereby improving the quality of the pure water.

[0025] Optionally, a high-pressure switch is provided between the pure water solenoid valve and the post-carbon filter element, the high-pressure switch is located between the post-carbon filter element and the detection device, and the pressure stabilizing device is located between the high-pressure switch and the post-carbon filter element.

[0026] By adopting the above technical solution, the opening and closing of the pure water solenoid valve is controlled by a high-pressure switch, thereby controlling the water pressure inside the water purifier and thus controlling the water purifier.

[0027] Optionally, a high-pressure switch and a first check valve for controlling the flow direction of pure water are provided between the pure water solenoid valve and the post-carbon filter. The high-pressure switch is located between the post-carbon filter and the detection device, the first check valve is located between the detection device and the pure water solenoid valve, and the pressure stabilizing device is located between the high-pressure switch and the post-carbon filter.

[0028] By adopting the above technical solution, the first check valve is controlled by a high-pressure switch to keep pure water flowing to the rear carbon filter element, thus making it less likely for pure water to flow back.

[0029] Optionally, it also includes a water inlet device for replenishing the water volume of the storage device;

[0030] The water inlet device includes a tap water angle valve connected in sequence for introducing tap water, a first pressure reducing valve for controlling the tap water flow, and a central filter element for filtering tap water.

[0031] The central filter element is connected to the water inlet of the storage device.

[0032] By adopting the above technical solution, the flow rate of tap water output from the tap water angle valve is controlled by the first pressure reducing valve, which makes it less likely for the central filter element to vibrate due to the impact of tap water. The tap water is then filtered preferentially by the central filter element, thereby reducing the particles carried by the tap water output from the tap water angle valve.

[0033] Optionally, a normally open solenoid valve is provided between the central filter element and the storage device.

[0034] By adopting the above technical solution, the water inlet device continuously outputs tap water filtered by the central filter element into the storage device through the normally open solenoid valve, thereby ensuring the water volume of the storage device.

[0035] Optionally, the normally open solenoid valve is equipped with a water flow control device, which includes a second pressure reducing valve.

[0036] The second pressure reducing valve is installed on the normally open solenoid valve and is used to control the pressure of tap water replenishment. The second pressure reducing valve is connected to the central filter element and the storage device respectively. The first low-pressure switch is installed before the second pressure reducing valve.

[0037] By adopting the above technical solution, the amount of tap water after being filtered by the central filter element is controlled by the second pressure reducing valve, thus making it less likely that the tap water will impact the storage device and cause it to vibrate.

[0038] Optionally, the storage device is provided with a counterflow device, which includes a second low-pressure switch, a second check valve, and a third check valve.

[0039] The second low-pressure switch is connected to the second check valve and the third check valve respectively. The second check valve is located between the third check valve and the storage device. The third check valve is connected to the tap water outlet of the storage device.

[0040] By adopting the above technical solution, through the second check valve and the third check valve, it is possible to prevent frequent water hammer when using tap water. When the water flow between the normally open solenoid valve and the storage device is less than the preset parameter of the low-pressure switch, the second low-pressure switch is de-energized to control the normally open solenoid valve to open, thereby ensuring smooth domestic water supply and no loss of water pressure.

[0041] In summary, this application includes at least one of the following beneficial technical effects:

[0042] 1. The water in the storage device is filtered through the filter cartridge to form pure water and wastewater. The wastewater is then returned to the storage device for recycling and purification. When users use tap water, the wastewater produced by the water purifier can be mixed with the tap water, thus achieving zero wastewater discharge and reducing the energy consumption of the water purifier. The pure water quality is monitored in real time by the detection device. When the parameters detected by the detection device exceed the benchmark parameters, the filter cartridge is cleaned by the control device, and pure water that meets the benchmark parameters is discharged. This removes harmful substances such as residual chlorine, heavy metals, discoloration, and odor from tap water to improve water quality.

[0043] 2. When the parameters detected by the detection device exceed the reference parameters, the water replenishment device continues to replenish water to the storage device, thereby realizing the circulation purification of water and reducing the water concentration in the storage tank to facilitate the RO membrane filter to produce pure water that meets the reference parameters.

[0044] 3. By adopting the above technical solution, the water pressure of the tap water after filtration by the central filter element is controlled by the second pressure reducing valve, which makes it less likely that the tap water will impact the storage device and cause vibration. The opening and closing of the normally open pressure reducing valve is controlled by the second low-pressure switch, so that domestic water can be used while the water purifier is producing water, and domestic water can be used effectively without affecting each other, thus improving the user's water experience. Attached Figure Description

[0045] Figure 1 This utility model relates to a waterway. Figure 1 ;

[0046] Figure 2 This utility model relates to a waterway. Figure 2 ;

[0047] Figure 3 This is the water circuit control circuit diagram of this utility model.

[0048] The parts referred to by the numbers in the above attached figures are as follows: 1. Storage device; 2. Filter assembly; 3. Drive device; 4. Filter cartridge assembly; 5. Control device; 6. Pure water solenoid valve; 7. Detection device; 8. Wastewater solenoid valve; 9. Pure water bypass valve; 10. First filter cartridge assembly; 11. Second filter cartridge assembly; 13. Pure water faucet; 14. Post-carbon filter cartridge; 15. Pressure stabilizing device; 16. High-pressure switch; 17. First check valve; 18. Water inlet device; 19. Tap water angle valve; 20. First pressure reducing valve; 21. Central filter cartridge; 22. Normally open solenoid valve; 23. Water flow control device; 24. Second pressure reducing valve; 25. First low-pressure switch; 26. Backflow device; 27. Second low-pressure switch; 28. Second check valve; 29. ​​Third check valve; 30. Sensor module; 31. Comparison module; 32. Opening module; 33. Relay module; 34. Reference module. Detailed Implementation

[0049] The following is in conjunction with the appendix Figures 1 to 3 The present invention will be further described in detail with reference to the embodiments.

[0050] Reference Figure 1 This application discloses a novel environmentally friendly zero-wastewater discharge system for kitchens, comprising a water inlet device 18, a normally open solenoid valve 22, a storage device 1, a filter assembly 2, a drive device 3, a filter cartridge assembly 4, a pure water solenoid valve 6, a first check valve 17, a detection device 7, a high-pressure switch 16, a post-carbon filter cartridge 14, and a pure water faucet 13, connected in sequence. It also includes a water flow control device 23 connected to the normally open solenoid valve 22, a control device 5 connected to the filter cartridge assembly 4, a pressure stabilizing device 15 connected between the post-carbon filter cartridge 14 and the high-pressure switch 16, and a counterflow device 26 connected to the storage device 1.

[0051] The water inlet device 18 includes a tap water angle valve 19 for introducing tap water, a first pressure reducing valve 20 for controlling the tap water flow, and a central filter element 21 for filtering tap water, all connected in sequence. The filter assembly 2 includes a first filter element assembly 10 and a second filter element assembly 11 connected in series. The water flow control device 23 includes a second pressure reducing valve 24, with a first low-pressure switch 25 connected before the second pressure reducing valve 24. The control device 5 includes a wastewater solenoid valve 8 for discharging wastewater generated by the filter element assembly 4 and a pure water bypass valve 9 for cleaning the filter element assembly 4. The backflow device 26 includes a second low-pressure switch 27, a second check valve 28, and a third check valve 29.

[0052] Reference Figure 1The storage device 1 is a water storage tank. The storage device 1 is connected to the normally open solenoid valve 22 and has an inlet. The storage device 1 is connected to the first filter element assembly 10 and has an outlet. The storage device 1 is connected to the wastewater solenoid valve 8 and has a concentrated water return outlet. The storage device 1 is connected to the third check valve 29 and has a tap water outlet.

[0053] Reference Figure 1 The water inlet device 18 is used to replenish the tap water in the water storage tank. The tap water angle valve 19 is connected to the tap water pipe. The central filter element 21 is a pre-filter element. The central filter element 21 is connected to the water storage tank, so that water from the water supply system of the area corresponding to the water inlet device 18 can be transported to the water storage tank through the tap water pipe. The flow rate of water transported to the water storage tank is controlled by the first pressure reducing valve 20, so that the water flow is less likely to continuously impact the water storage tank and thus improve the service life of the water storage tank.

[0054] Reference Figure 1 The normally open solenoid valve 22 is connected between the central filter element 21 and the water storage tank. When the water purifier is powered on, the normally open solenoid valve 22 is energized and closed, and the water flow control device 23 enables the water inlet device 18 to replenish water to the water storage tank.

[0055] Reference Figure 1 The water flow control device 23 controls the flow rate of the water output from the water inlet device 18 and replenishes the water purifier to continue producing pure water. The second pressure reducing valve 24 is connected to the normally open solenoid valve 22 and is used to control the tap water flow rate. The second pressure reducing valve 24 is interconnected with the central filter element 21 and the water inlet of the storage tank. The water purifier can be protected when the tap water supply is interrupted or when the water flow through the first low-pressure switch 25 does not exceed the preset parameters. In this embodiment, the preset parameters of the first low-pressure switch 25 are set by the operator according to the actual situation, and will not be elaborated here.

[0056] Reference Figure 1 The second low-pressure switch 27 is connected to the second check valve 28 and the third check valve 29. The third check valve 29 is connected to the tap water outlet of the water storage tank, and the second check valve 28 is connected between the third check valve 29 and the water storage tank. This reduces the probability of water hammer between the normally open solenoid valve 22 and the water storage tank. When the operator uses tap water, the operator uses a tap connected to the domestic water outlet to output tap water from the water storage tank. When the water pressure between the normally open solenoid valve 22 and the water storage tank is less than the preset parameter of the low-pressure switch, the second low-pressure switch 27 controls the normally open solenoid valve 22 to be de-energized and opened, thus ensuring that the water pressure is not affected when using tap water.

[0057] Reference Figure 2When the water purifier is powered off or shuts down when the water is full, and the operator needs to use domestic water, the operator can open the faucet at the domestic water outlet to draw water from the storage tank. Since the normally open solenoid valve 22 is in the power-off state, the tap water filtered by the central filter element 21 is delivered to the storage tank to replenish the water, so that the operator can continue to use the tap water in the storage tank when the water purifier is powered off.

[0058] Reference Figure 1 The filter assembly 2 is connected to the water inlet of the water storage tank and is used to filter the tap water in the tank. The first filter element assembly 10 is also connected to the water inlet of the water storage tank. The first filter element assembly 10 can be a PP cotton filter element, and the second filter element assembly 11 can be an ultrafiltration membrane filter element. In this embodiment, the number and weight of the first filter element assembly 10 and the second filter element assembly 11 can be set by the operator according to the actual situation, and will not be elaborated here.

[0059] Reference Figure 1 The drive device 3 is connected between the first filter element assembly 10 and the second filter element assembly 11, and the drive device 3 is connected to the first filter element assembly 10 and the second filter element assembly 11 respectively. The drive device 3 is a water pump.

[0060] Reference Figure 1 The filter element 4 is used to filter the water in the filter assembly 2, and also to generate pure water and wastewater. The filter element 4 includes a pure water outlet and a wastewater outlet, and the pure water solenoid valve 6 is connected to the pure water outlet of the filter element 4. In this embodiment, the filter element 4 can be a 100G type RO membrane filter element. The first check valve 17 is used to prevent pure water backflow and is connected to the pure water solenoid valve 6, and the detection device 7 is connected to the first check valve 17.

[0061] Reference Figure 1 The high-pressure switch 16 is connected to the detection device 7. When the pressure stabilizing device 15 is full of pure water, the water pressure between the pure water solenoid valve 6 and the post-carbon filter 14 increases. When the water pressure increases to the preset start value of the high-pressure switch 16, the water pump is controlled to stop working to stop the RO membrane filter from producing pure water. When the pure water faucet 13 is opened, the water pressure between the pure water solenoid valve 6 and the post-carbon filter 14 begins to decrease. When the water pressure drops to the preset reset value of the high-pressure switch 16, the high-pressure switch 16 controls the water pump to continue running so that the RO membrane filter continues to produce pure water. In this embodiment, the preset start value and preset reset value of the high-pressure switch 16 are set by the operator according to the actual situation, and will not be described in detail here.

[0062] Reference Figure 1 The post-carbon filter 14 is connected to the high-pressure switch 16 and is used to filter pure water. The pure water faucet 13 is connected to the post-carbon filter 14 and is used to control the pure water flow. The post-carbon filter 14 is a T33 model post-carbon filter 14.

[0063] Reference Figure 1 The pressure stabilizing device 15 is connected to the high-pressure switch 16 and the post-carbon filter element 14, respectively. The pressure stabilizing device 15 is a pressure tank. When the pure water flow required when the pure water faucet 13 is turned on is greater than the pure water flow generated by the filter element 2, the pressure tank can quickly provide the stored pure water to ensure a sufficient water supply. When the pure water flow required when the pure water faucet 13 is turned on is less than the pure water flow generated by the filter element 2, the excess water can enter the pressure tank for storage, thereby stabilizing the water pressure.

[0064] Reference Figure 2 The wastewater solenoid valve 8 is connected to the wastewater outlet of the filter element device 4 and the concentrate return port of the storage tank. When the wastewater solenoid valve 8 is activated, the wastewater generated by the RO membrane filter element is returned to the storage tank for further filtration, thereby achieving zero wastewater discharge and reducing energy consumption.

[0065] Reference Figure 3 The detection device 7 includes a sensor module 30, a comparison module 31, a reference module 34, an activation module 32, and a relay module 33. The sensor module 30 outputs a detection signal for pure water quality and uses a CPPS10-DN TDS test probe. The reference module 34 is connected to the comparison module 31 and provides a reference signal to it. The reference module 34 includes resistors R1 and R2. The comparison module 31 is connected to the sensor module 30 and compares the detection signal with the reference signal, outputting a comparison signal. The comparison module 31 uses an LM358 comparator N1. The activation module 32 is connected to the comparison module 31 to receive the comparison signal and output a start signal. The activation module 32 uses a 9013 NPN transistor Q1. The relay module 33 is connected to the activation module 32 to receive the start signal and output a control signal to control the opening of the pure water bypass valve 9 and the closing of the pure water solenoid valve 6. The relay module 33 uses a MY2N-GS-DC24V relay KM1.

[0066] One end of the TDS test probe is connected to the power supply VCC, and the other end is connected to the non-inverting input of comparator N1. The inverting input of comparator N1 is connected to one end of resistor R1 and one end of resistor R2. The other end of resistor R1 is connected to the power supply VCC, and the other end of resistor R2 is connected to ground GND. The output of comparator N1 is connected to the base of transistor Q1, the emitter of transistor Q1 is connected to ground GND, and the collector of transistor Q1 is connected to one end of relay KM1. The other end of relay KM1 is connected to the power supply VCC. With VCC connected, one end of the normally open contact KM1-1 of the relay is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the power supply VCC. The other end of the normally open contact KM1-1 of the relay is connected to one end of the pure water bypass valve, and the other end of the pure water bypass valve is connected to ground GND. One end of the normally closed contact KM1-2 of the relay is connected to one end of the resistor R4, and the other end of the resistor R4 is connected to the power supply VCC. The other end of the normally closed contact KM1-2 of the relay is connected to one end of the pure water solenoid valve, and the other end of the pure water solenoid valve is connected to ground GND.

[0067] When the water quality parameters detected by the detection device 7 are less than the preset reference parameters, the comparator N1 outputs a low-level comparison signal, the transistor Q1 is not conducting, the relay KM1 is not energized, the normally open contact KM1-1 of the relay is open, and the pure water bypass valve 9 is in a non-conducting state; the normally closed contact KM1-2 of the relay is closed, and the pure water solenoid valve 6 is energized to conduct in order to deliver pure water to the pure water faucet 13.

[0068] When the water quality parameters detected by the detection device 7 are greater than the preset reference parameters, the comparator N1 outputs a high-level comparison signal, the transistor Q1 conducts, the relay KM1 is energized, the normally open contact KM1-1 of the relay closes, and the pure water bypass valve 9 is in a conducting state; the normally closed contact KM1-2 of the relay is energized and opens, the pure water solenoid valve 6 is not energized and cannot conduct, so pure water cannot be delivered to the pure water faucet 13. Then, pure water that does not meet the preset reference parameters is delivered to the storage tank through the pure water bypass valve 9, and mixed with the water added to the storage tank by the water inlet device 18 to dilute the water concentration in the storage tank, thereby reducing the water concentration in the storage tank to facilitate the RO membrane filter element in producing pure water that meets the reference parameters. The reference parameters refer to the parameters corresponding to pure water quality that meets drinking standards. The reference parameters are preset by those skilled in the art and will not be elaborated here.

[0069] The working process of a novel environmentally friendly zero-wastewater discharge kitchen system according to an embodiment of this utility model is as follows:

[0070] 1. When the water purifier is powered on, open the pure water bypass valve 9 but do not open the pure water solenoid valve 6. Control the pure water bypass valve 9 to circulate pure water to the storage tank within a preset reference circulation time to clean the RO membrane filter. In this embodiment, the reference circulation time can be set by the operator according to the actual situation, which will not be elaborated here. In this embodiment, the reference circulation time is preferably set to 3 minutes.

[0071] 2. After the pure water bypass valve 9 outputs the preset reference cycle time, the normally open solenoid valve 22 is opened to allow the tap water filtered by the central filter element 21 to be delivered to the water storage tank. The water pump is then controlled to start drawing water from the water storage tank, which is then filtered by the filter assembly 2 and delivered to the RO membrane filter element. The RO membrane filter element filters the tap water into pure water and wastewater. The wastewater solenoid valve delivers the wastewater to the water storage tank to form a backflow. The pure water solenoid valve 6 delivers pure water, which is then delivered to the pure water faucet 13 through the post-carbon filter element 14.

[0072] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A novel environmentally friendly zero-wastewater discharge system for kitchens, characterized in that: It includes a storage device (1) connected end to end in sequence, a filter assembly (2) for filtering water in the storage device (1), a drive device (3) for driving the water in the storage device (1) to filter, a filter element device (4) for filtering water in the filter assembly (2), and a control device (5). The filter element device (4) is used to generate pure water and wastewater, and the filter element device (4) includes a pure water outlet and a wastewater outlet. The filter element device (4) is equipped with a pure water solenoid valve (6) for controlling the discharge of pure water at the pure water outlet end, and a detection device (7) for detecting the pure water quality and outputting a detection signal is provided on the pure water outlet end of the filter element device (4). The control device (5) is used to control the pure water outlet to output pure water to the storage device (1), and the control device (5) is used to control the wastewater outlet of the filter element device (4) to output wastewater to the storage device (1). When the detection signal does not exceed the preset reference parameter, the control device (5) opens the pure water solenoid valve (6) to output the pure water generated by the pure water outlet of the filter element device (4). When the detection signal exceeds the preset reference parameter, the control device (5) controls the pure water solenoid valve (6) to close and outputs the pure water generated by the pure water outlet of the filter element device (4) to the storage device (1).

2. The novel environmentally friendly zero-wastewater discharge system for kitchens according to claim 1, characterized in that: The control device (5) includes a wastewater solenoid valve (8) for discharging wastewater generated by the filter element device (4) and a pure water bypass valve (9) for cleaning the filter element device (4). The wastewater solenoid valve (8) is connected to the concentrated water return port of the storage device (1); The pure water bypass valve (9) is connected to the storage device (1) and the pure water outlet respectively; When the detection signal does not exceed the preset reference parameter, the pure water bypass valve (9) does not open and the pure water solenoid valve (6) is opened to output the pure water generated at the pure water outlet. When the detection signal exceeds the preset reference parameter, the pure water solenoid valve (6) is closed and the pure water bypass valve (9) is opened to output the pure water generated at the pure water outlet to the storage device (1).

3. The novel environmentally friendly zero-wastewater discharge system for kitchens according to claim 2, characterized in that: The filter assembly (2) includes a first filter element assembly (10) and a second filter element assembly (11) that are connected to each other, and the drive device (3) is disposed between the first filter element assembly (10) and the second filter element assembly (11); The first filter element assembly (10) is connected to the water inlet on the storage device (1).

4. The novel environmentally friendly zero-wastewater discharge system for kitchens according to claim 1, characterized in that: A pure water faucet (13) is provided on the pure water solenoid valve (6), and a post-carbon filter element (14) for filtering pure water is provided between the pure water faucet (13) and the pure water solenoid valve (6). A pressure stabilizing device (15) for stabilizing pure water pressure is provided between the post-carbon filter (14) and the pure water solenoid valve (6). The pressure stabilizing device (15) is connected to the pure water solenoid valve (6) and the post-carbon filter (14) respectively.

5. A novel environmentally friendly zero-wastewater discharge system for kitchens according to claim 4, characterized in that: A high-pressure switch (16) is provided between the pure water solenoid valve (6) and the post-carbon filter (14). The high-pressure switch (16) is located between the post-carbon filter (14) and the detection device (7). The pressure stabilizing device (15) is located between the high-pressure switch (16) and the post-carbon filter (14).

6. A novel environmentally friendly zero-wastewater discharge system for kitchens according to claim 5, characterized in that: A first check valve (17) for controlling the flow direction of pure water is provided between the pure water solenoid valve (6) and the high-pressure switch (16). The first check valve (17) is located between the detection device (7) and the pure water solenoid valve (6).

7. A novel environmentally friendly zero-wastewater discharge system for kitchens according to claim 1, characterized in that, It also includes a water inlet device (18) for replenishing the water volume of the storage device (1). The water inlet device (18) includes a tap water angle valve (19) connected in sequence for introducing tap water, a first pressure reducing valve (20) for controlling tap water pressure, and a central filter element (21) for filtering tap water. The central filter element (21) is connected to the inlet of the storage device (1).

8. A novel environmentally friendly zero-wastewater discharge system for kitchens according to claim 7, characterized in that: A normally open solenoid valve (22) is provided between the central filter element (21) and the storage device (1).

9. A novel environmentally friendly zero-wastewater discharge system for kitchens according to claim 8, characterized in that: The normally open solenoid valve (22) is provided with a water flow control device (23), which includes a second pressure reducing valve (24). The second pressure reducing valve (24) is installed on the normally open solenoid valve (22) and is used to control the pressure of tap water replenishment. The second pressure reducing valve (24) is connected to the central filter element (21) and the storage device (1) respectively. A first low pressure switch (25) is installed before the second pressure reducing valve (24).

10. A novel environmentally friendly zero-wastewater discharge system for kitchens according to claim 8, characterized in that: The storage device (1) is provided with a counterflow device (26), which includes a second low-pressure switch (27), a second check valve (28) and a third check valve (29). The second low-pressure switch (27) is connected to the second check valve (28) and the third check valve (29) respectively. The second check valve (28) is located between the third check valve (29) and the storage device (1). The third check valve (29) is connected to the tap water outlet of the storage device (1).

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