Filtering system with adjustable mineral content, filtering method and electronic equipment

Abstract

The invention provides a filtering system with adjustable mineral content, a filtering method and electronic equipment, the filtering system comprises a first-stage filter element and a second-stage filter element which are connected in sequence, and a booster pump is arranged between the first-stage filter element and the second-stage filter element; the water storage tank is connected with the primary filter element; water at the water inlet sequentially passes through the first-stage filter element, then flows into the second-stage filter element, flows back to the first-stage filter element, passes through the water storage tank and then flows out from the purified water outlet of the water storage tank; a second TDS device is arranged at a water inlet of the water storage tank, the water storage tank is further provided with an emptying pipeline connected to the second-stage filter element, and the water storage tank is emptied through a drainage pipeline of the second-stage filter element. According to the filtering system with the adjustable mineral content, the adjusting method and the electronic equipment, the mineral content of final purified water can be adjusted as long as the value of the mineral content of the second TDS device is detected, the voltage of the booster pump is adjusted, and the effective area of the filtering membrane of the second-stage filter element is adjusted, and the constant water outlet amount can also be achieved.

Description

Technical Field

[0001] The present disclosure relates to the field of water purification systems, and particularly to a filtering system, a filtering method, and an electronic device with adjustable mineral content. Background Art

[0002] With the continuous improvement of living standards, water purification systems are commonly equipped in households. A water purification system usually has a filtering system that filters tap water into purified water. The existing filter element design usually has a fixed retention rate. Therefore, it is impossible to automatically adjust the mineral content in the purified water. To adjust the mineral content, it is necessary to rely on replacing the filter element or adjusting the wastewater ratio, so it is impossible to dynamically respond to water quality fluctuations, resulting in poor user experience; the disadvantage of insufficient flow stability. Moreover, when the filter element is blocked or the filtering area changes in the traditional system, the water output flow rate decreases significantly, and frequent maintenance is required; the risk of mineral addition: external mineral addition has a pollution risk and the target value cannot be accurately controlled. Summary of the Invention

[0003] The technical problem to be solved by the present disclosure is to overcome the defects in the prior art and provide a filtering system, a filtering method, and an electronic device capable of dynamically adjusting the mineral content.

[0004] The present disclosure solves the above technical problem through the following technical solutions: A filtering system with adjustable mineral content includes a primary filter element and a secondary filter element connected in sequence, and a booster pump is provided between the primary filter element and the secondary filter element;

[0005] It further includes a water storage tank connected to the primary filter element;

[0006] The water at the water inlet passes through the primary filter element and the secondary filter element in sequence, then flows back to the primary filter element, and then flows out from the purified water outlet of the water storage tank after passing through the water storage tank;

[0007] A second TDS (Total Dissolved Solids) device is provided at the water inlet of the water storage tank. The water storage tank also has an emptying pipeline connected to the secondary filter element, and the water storage tank is emptied through the drainage pipeline of the secondary filter element.

[0008] Preferably, a first solenoid valve is provided between the primary filter element and the water inlet of the water storage tank, and the first solenoid valve is used to control the water filtered by the primary and secondary filter elements to enter the water storage tank;

[0009] And / or,

[0010] A second solenoid valve is provided between the water storage tank and the emptying pipeline of the secondary filter element, and the second solenoid valve is used to control the emptying of the water storage tank.

[0011] Preferably, a brushless water pump is provided at the purified water outlet of the water storage tank, and a liquid level sensor is provided inside the water storage tank; based on the real-time water storage amount fed back by the liquid level sensor, the PWM speed regulation of the brushless water pump is triggered.

[0012] Preferably, a first pipeline and a second pipeline are provided between the primary filter element and the secondary filter element. The first pipeline is used to flow the water passing through the primary filter element into the secondary filter element, and the second pipeline is used to flow the water passing through the secondary filter element back to the primary filter element. The booster pump is provided in any one of the first pipeline and the second pipeline.

[0013] Preferably, the secondary filter element includes a housing, a filter membrane is provided between the water inlet and the water outlet of the housing, a variable diameter spring is sleeved outside the filter membrane, one end of the variable diameter spring is fixed with an adjusting plate sleeved outside the filter membrane, and the effective area of the filter membrane has a positive relationship with the water flow pressure.

[0014] The present disclosure also provides an adjustment method for a filtering system with adjustable mineral content described in any one of the above, and the method includes,

[0015] Obtain a preset target mineral content value, set the voltage of the booster pump to the initial value and empty the water storage tank;

[0016] Adjust the voltage of the booster pump, and at the same time detect the mineral content value of the second TDS device;

[0017] In response to the detected mineral content value of the second TDS device reaching the target mineral content value, store water in the water storage tank.

[0018] Preferably, the adjusting the voltage of the booster pump and at the same time detecting the mineral content value of the second TDS device includes,

[0019] Based on a fitting formula or an incremental PID (Proportional Integral Derivative) algorithm, adjust the voltage of the booster pump, and at the same time detect the mineral content value of the second TDS device.

[0020] Preferably, the incremental PID is:

[0021]

[0022] Wherein, is the voltage of the booster pump that needs to be adjusted, is the current mineral content deviation, is the previous mineral content deviation, is the penultimate mineral content deviation, 、 、 is the coefficient of PID.

[0023] Preferably,

[0024] wherein, is the target mineral content value, is the influent mineral content, is the initial filtration area of the secondary filter element, is the rejection efficiency coefficient of the secondary filter element, is the area adjustment coefficient of the secondary filter element, is the non-linear factor of the secondary filter element, is the pump pressure constant, is the voltage-speed coefficient, is the initial spring stiffness, is the effective area of pressure action, is the voltage of the booster pump.

[0025] The present disclosure also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and configured to run on the processor. When the processor executes the computer program, the adjustment method described in any one of the above is implemented.

[0026] Based on common general knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred examples of the present disclosure.

[0027] The positive and progressive effects of the present disclosure are as follows: For the filtration system, adjustment method, and electronic device with adjustable mineral content, by detecting the value of the mineral content of the second TDS device and adjusting the voltage of the booster pump, the effective area of the filter membrane of the secondary filter element can be adjusted, thereby realizing the adjustment of the mineral content of the final purified water, and the constant water output can also be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of a filtration system with adjustable mineral content provided in Embodiment 1 of the present disclosure;

[0029] Figure 2 is a schematic structural diagram of the secondary filter element of the filtration system with adjustable mineral content provided in Embodiment 1 of the present disclosure;

[0030] Figure 3 is a schematic flow diagram of the filtration method of the filtration system with adjustable mineral content provided in Embodiment 2 of the present disclosure;

[0031] Figure 4 is a schematic diagram of the electronic device provided in Embodiment 3 of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The present disclosure will be further described below by way of examples, but the present disclosure is not limited to the scope of the described examples for this reason.

[0033] In the embodiments of the present disclosure, prefix words such as "first" and "second" are only used to distinguish different described objects, and have no limiting effect on the position, order, priority, quantity, content, etc. of the described objects. The use of ordinal numbers and other prefix words for distinguishing described objects in the embodiments of the present disclosure does not constitute a limitation on the described objects. For the statements of the described objects, refer to the descriptions in the context of the embodiments, and no redundant limitation should be constituted due to the use of such prefix words. In addition, in the description of this embodiment, unless otherwise specified, the meaning of "a plurality" is two or more.

[0034] In the embodiments of the present disclosure, the processing of collection, storage, use, processing, transmission, provision, and disclosure of the user's personal information complies with the provisions of relevant laws and regulations and does not violate public order and good customs.

[0035] Embodiment 1

[0036] Figure 1 It is a schematic structural diagram of a filtering system with adjustable mineral content provided for an exemplary embodiment of the present disclosure; the filtering system includes a primary filter element 1 and a secondary filter element 2 connected in sequence, and a booster pump 3 is provided between the primary filter element 1 and the secondary filter element 2; a water storage tank 4 connected to the primary filter element.

[0037] The tap water at the water inlet flows through the primary filter element 1 into the secondary filter element 2 in sequence, then flows back from the secondary filter element 2 to the primary filter element 1, and then flows out from the purified water outlet of the water storage tank after passing through the water storage tank 4.

[0038] A first TDS device 5 is provided at the water inlet, a second TDS device 6 is provided at the water inlet of the water storage tank 4, the water storage tank also has an emptying pipeline 7 connected to the secondary filter element 2, and the water storage tank 4 is emptied through the drainage pipeline 22 of the secondary filter element 2. Preferably, a drainage solenoid valve 23 is provided on the drainage pipeline 22.

[0039] Further, a first solenoid valve 8 is provided between the primary filter element 1 and the water inlet of the water storage tank 4, and the first solenoid valve 8 is used to control the water filtered by the primary and secondary filter elements to enter the water storage tank 4.

[0040] Further, a second solenoid valve 71 is provided between the water storage tank and the emptying pipeline 7 of the secondary filter element 2, and the second solenoid valve 71 is used to control the emptying of the water storage tank and the circulation of the water flow. The water in the water storage tank flows through the emptying pipeline 7 to the secondary filter element 2 and then is discharged through the drainage pipeline 22 of the secondary filter element 2.

[0041] In addition, when the drain pipe 22 is closed, that is, when the drain solenoid valve 23 is closed, the tap water first passes through the first TDS device, flows from the primary filter element into the secondary filter element, then passes through the primary filter element again, enters the water storage tank through the second TDS device, then enters the secondary filter element 2 through the water storage tank, and then enters the primary filter element after being filtered by the secondary filter element 2, and then enters the water storage tank through the second TDS device, and so on in a cycle. Therefore, by adjusting the booster pump, the effective filtration area of the secondary filter element can be adjusted, and thus the mineral content of the water quality can be adjusted. By detecting the value of the second TDS device, the mineral content entering the water storage tank can be controlled. After the value of the second TDS device reaches the required value, the second solenoid valve 71 is closed, and the water storage operation of the water storage tank can be carried out. The purpose of the water in the water storage tank circulating through the secondary filter element multiple times is to update the water in the water storage tank to prevent the water from deteriorating over time. Therefore, after a period of time, the water in the water storage tank will be filtered through the secondary filter element again, and the primary filter element will be used to adjust the taste to ensure the cleanliness of the water in the water storage tank.

[0042] Further, a first pipe 11 and a second pipe 21 are provided between the primary filter element and the secondary filter element. The first pipe 11 is used to flow the water passing through the primary filter element 1 into the secondary filter element 2, and the second pipe 21 is used to flow the water passing through the secondary filter element 2 back to the primary filter element 1. The booster pump can be provided in any one of the first pipe and the second pipe.

[0043] Further, the above-mentioned drain pipe 7 is connected to the first pipe 11, that is, when the water in the water storage tank needs to be drained, it passes through the drain pipe 7 and the first pipe 11 into the secondary filter element 2, and then is discharged through the drain pipe 22 of the secondary filter element 2.

[0044] The secondary filter element 2 includes a housing 203. A filter membrane 204 is provided between the water inlet and the water outlet of the housing 203. A variable-diameter spring 205 is sleeved outside the filter membrane 204. One end of the variable-diameter spring 205 is also fixed with an adjusting plate 206 sleeved outside the filter membrane. As the water flow pressure flowing into the secondary filter element 2 changes, a pressure is generated on the variable-diameter spring, so that the adjusting plate 206 moves axially along the outside of the filter membrane 204, so that different water pressures correspond to different effective areas of the filter membrane 204. The effective area of the filter membrane 204 has a positive relationship with the water flow pressure.

[0045] Preferably, as Figure 2As shown, the water inlet is located at the bottom of the housing 203, and the water outlet is also located at the bottom of the housing 203. A central pipe 207 communicating with the water outlet is provided in the center of the housing 203, and the filter membrane 204 is sleeved outside the central pipe 207. The water entering the water inlet enters the filter membrane 204 through the gap between the filter membrane 204 and the housing 203, and then enters the central pipe 207 through the small through holes distributed on the central pipe 207, and then flows to the water outlet through the central pipe 207. Since the adjusting plate and the variable diameter spring are also sleeved outside the filter membrane 204, and the adjusting plate is used to seal the gap between the filter membrane 204 and the housing 203, the magnitude of the water pressure can compress the spring, so that the variable diameter spring drives the adjusting plate 206 to move up and down outside the filter membrane 204, thereby adjusting the contact area between the water and the filter membrane 204. A waste water outlet is also provided on one side of the water outlet.

[0046] Specifically, the booster pump is a brushless DC booster pump, and its rotational speed n has a linear relationship with the input voltage U , where is the voltage-rotation speed coefficient. For example, the adjustable range of the input voltage is 0~24V, and the corresponding rotational speed n range is 0~5000rpm.

[0047] The pressure generation mechanism of the booster pump is that when the rotational speed n of the booster pump increases, the water flow pressure P increases with the square of the rotational speed , is the pump characteristic constant, and the water flow pressure acts on the adjusting plate, thereby compressing the variable diameter spring 205.

[0048] For the variable diameter spring 205, the spring wire diameter decreases exponentially from the water inlet end to the water outlet end, and the stiffness coefficient K changes with the compression amount x, , λ is the non-linear factor, x is the spring compression amount, is the initial stiffness coefficient. A small pressure change can drive a significant displacement, and the spring compression amount is proportional to the effective area of the filter membrane.

[0049] Therefore, as long as the voltage of the booster pump is adjusted, the compression amount of the variable diameter spring 205 can be adjusted, and then the effective area of the filter membrane can be adjusted to realize the adjustment of the mineral content. Therefore, as long as the value of the mineral content at the second TDS device is detected, and then the voltage of the booster pump is adjusted, the effective area of the filter membrane of the secondary filter element is adjusted, and then the mineral content of the final purified water is adjusted.

[0050] Preferably, a brushless water pump 41 is provided at the purified water outlet of the water storage tank, and a liquid level sensor is provided in the water storage tank; based on the real-time water storage amount fed back by the liquid level sensor, the PWM speed regulation of the brushless water pump is triggered to maintain a constant output.

[0051] The control logic of the brushless water pump is as follows. The water output flow , where k is the pump characteristic constant, is the pressure of the water storage tank, which is proportional to the water level of the water storage tank. is the pressure at the user end. Since the diameter of the water outlet pipe is constant, keeping the pressure at the user end constant can ensure the stability of the water output flow. The pressure at the user end is defaulted to the atmospheric pressure, and adjusting the speed of the brushless water pump can control the stability of the water output.

[0052] Based on the real-time water storage amount of the liquid level sensor, the pressure of the water storage tank can be obtained, and then by adjusting the speed of the brushless water pump, the water output flow can be adjusted, and further the constancy of the pressure at the user end can be ensured.

[0053] For the filtration system with adjustable mineral content, as long as the value of the mineral content at the second TDS device is detected, and then by adjusting the voltage of the booster pump, the effective area of the filter membrane of the secondary filter element can be adjusted, so as to realize the adjustment of the mineral content of the final purified water. Moreover, the constancy of the water output amount can also be realized.

[0054] Embodiment 2

[0055] Corresponding to the embodiment of the filtration system with adjustable mineral content described above, the present disclosure also provides an embodiment of the adjustment method of the filtration system with adjustable mineral content. As Figure 3 shown, based on the filtration system with adjustable mineral content in the above Embodiment 1, the adjustment method includes:

[0056] S01, obtaining a preset target mineral content value, setting the voltage of the booster pump to the initial value, and emptying the water storage tank; the preset target mineral content value is set according to needs.

[0057] S02, filling water into the system, adjusting the voltage of the booster pump, and simultaneously detecting the mineral content value of the second TDS device; the mineral content value of the second TDS device is the mineral content value of the water after storing water in the water storage tank. Therefore, only by detecting that the mineral content value of the second TDS device reaches the preset mineral content value, the water storage tank can be filled with water.

[0058] S03, in response to the detection that the mineral content value of the second TDS device reaches the target mineral content value, filling water into the water storage tank. When water is needed later, only the water in the water storage tank needs to be output. The isolation of the water output and water storage lines is achieved to ensure the stability of user water use.

[0059] Preferably, the method further includes:

[0060] S04, in response to the water intake demand of the user, opening the water storage tank and the brushless water pump to output water;

[0061] S05. Adjust the rotation speed of the brushless water pump based on the real-time water storage amount of the liquid level sensor, and then adjust the water output flow rate.

[0062] Preferably, adjust the voltage of the booster pump and simultaneously detect the mineral content value of the second TDS device; including,

[0063] Adjust the voltage of the booster pump based on the fitting formula or the incremental PID algorithm, and simultaneously detect the mineral content value of the second TDS device.

[0064] Preferably, adjust the voltage of the booster pump based on the incremental PID algorithm, and the incremental formula is:

[0065]

[0066] Wherein, is the voltage of the booster pump to be adjusted, is the current mineral content deviation, is the previous mineral content deviation, is the penultimate mineral content deviation, , , are the coefficients of PID, which are mainly used to correlate the voltage and the mineral content, and can be obtained through experience and tests , , These three parameters. Calculate as the voltage change value, and adjust the rotation speed of the pump through the voltage to control the effective filtration area of the secondary filter element diaphragm.

[0067] Preferably, based on the adjustment method of the fitting formula, the fitting formula is:

[0068]

[0069] Wherein, is the target mineral content value, is the inlet water mineral content, preferably, it is the content value measured by the first TDS device, is the initial filtration area of the secondary filter element, is the interception efficiency coefficient of the secondary filter element, which is used to quantify the interception effect of minerals per unit filtration area and is an inherent parameter of the filter element diaphragm; is the area adjustment coefficient of the secondary filter element, which represents the relative proportion of the change in the filtration area caused by the unit displacement of the adjustment plate. In the mechanical adjustment system, the axial displacement x of the adjustment plate is converted into the filtration area A of the filter membrane, is the non - linear factor of the secondary filter element, used to describe the non - linear characteristic that the stiffness of the variable - diameter spring changes with the compression displacement. When λ = 0, it degenerates into a linear spring with a constant stiffness; when λ > 0, the spring stiffness increases exponentially with the compression amount, that is, it is compliant and easy to compress at small displacements, and rigid and difficult to compress at large displacements. is the pump pressure constant, is the voltage - speed coefficient, is the initial spring stiffness, is the effective area of the pressure action, is the voltage of the booster pump. This adjustment method adjusts the voltage of the booster pump of the system with adjustable mineral content in Embodiment 1, and then adjusts the mineral content of the purified water in the water storage tank. Moreover, the two processes of water storage and water output are controlled separately, which can ensure the stability of the water output.

[0070] Embodiment 3

[0071] Figure 4 This is a schematic structural diagram of an electronic device shown in an exemplary embodiment of the present disclosure. The electronic device includes a memory, a processor, and a computer program stored on the memory and configured to run on the processor. When the processor executes the computer program, it implements the adjustment method described in any of the above embodiments. Figure 4 The electronic device 90 shown is merely an example and should not impose any limitations on the functions and usage scope of the embodiments of the present disclosure.

[0072] As Figure 4 shown, the electronic device 90 can be presented in the form of a general - purpose computing device. For example, it can be a server device. The components of the electronic device 90 may include, but are not limited to: at least one of the above - mentioned processors 91, at least one of the above - mentioned memories 92, and a bus 93 connecting different system components (including the memory 92 and the processor 91).

[0073] The bus 93 includes a data bus, an address bus, and a control bus.

[0074] The memory 92 may include volatile memory, such as random access memory (RAM) 921 and / or cache memory 922, and may further include read - only memory (ROM) 923.

[0075] The memory 92 may also include a program tool 925 (or utility) having a set (at least one) of program modules 924. Such program modules 924 include, but are not limited to: an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include the implementation of a network environment.

[0076] The processor 91 executes various functional applications and data processing by running the computer program stored in the memory 92, such as the adjustment method provided in any of the above embodiments.

[0077] The electronic device 90 can also communicate with one or more external devices 94 (such as a keyboard, pointing device, etc.). Such communication can be carried out through the input / output (I / O) interface 95. Moreover, the electronic device 90 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through the network adapter 96. As shown in the figure, the network adapter 96 communicates with other modules of the electronic device 90 through the bus 93. It should be understood that although not shown in the figure, other hardware and / or software modules can be used in combination with the electronic device 90, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (redundant array of independent disks) systems, tape drives, and data backup storage systems, etc.

[0078] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of the two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0079] Embodiment 4

[0080] The embodiments of the present disclosure also provide a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the adjustment method provided in any of the above embodiments is implemented.

[0081] Among them, the more specific readable storage medium that can be adopted can include but is not limited to: portable disks, hard disks, random access memories, read-only memories, erasable programmable read-only memories, optical storage devices, magnetic storage devices, or any suitable combination of the above.

[0082] Embodiment 5

[0083] The embodiments of the present disclosure also provide a computer program product, including a computer program, and when the computer program is executed by a processor, the adjustment method described in any one of the above is implemented.

[0084] Among them, the program code for executing the computer program product of the present disclosure can be written in any combination of one or more programming languages, and the program code can be executed entirely on the user device, partially on the user device, executed as an independent software package, partially on the user device and partially on a remote device, or entirely on a remote device.

[0085] Although the specific embodiments of the present disclosure have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present disclosure is defined by the appended claims. Without departing from the principles and essence of the present disclosure, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A filtration system with adjustable mineral content, characterized in that it includes a primary filter element and a secondary filter element connected in sequence, and a booster pump is provided between the primary filter element and the secondary filter element; it further includes a water storage tank connected to the primary filter element; the water at the water inlet passes through the primary filter element and the secondary filter element in sequence, then flows back to the primary filter element, and then flows out from the purified water outlet of the water storage tank after passing through the water storage tank; a second TDS device is provided at the water inlet of the water storage tank, the water storage tank also has an emptying pipeline connected to the secondary filter element, and the water storage tank is emptied through the drainage pipeline of the secondary filter element.

2. The filter system with adjustable mineral content as described in claim 1, characterized in that, a first solenoid valve is provided between the primary filter element and the water inlet of the water storage tank, and the first solenoid valve is used to control the water filtered by the primary and secondary filter elements to enter the water storage tank; and / or a second solenoid valve is provided between the water storage tank and the emptying pipeline of the secondary filter element, and the second solenoid valve is used to control the emptying of the water storage tank.

3. The filter system with adjustable mineral content as claimed in claim 1, wherein, a brushless pump is provided at the purified water outlet of the water storage tank, and a liquid level sensor is provided in the water storage tank; based on the real-time water storage volume fed back by the liquid level sensor, the PWM speed regulation of the brushless pump is triggered.

4. The filter system with adjustable mineral content according to claim 1, wherein a first pipeline and a second pipeline are provided between the primary filter element and the secondary filter element, the first pipeline is used to flow the water passing through the primary filter element into the secondary filter element, the second pipeline is used to flow the water passing through the secondary filter element back to the primary filter element, and the booster pump is arranged in any one of the first pipeline and the second pipeline.

5. The filtration system with adjustable mineral content according to claim 1, characterized in that, the secondary filter element includes a housing, a filter membrane is provided between the water inlet and the water outlet of the housing, a variable diameter spring is sleeved outside the filter membrane, one end of the variable diameter spring is fixed with an adjusting plate sleeved outside the filter membrane, and the effective area of the filter membrane has a positive relationship with the water flow pressure.

6. A method for adjusting a filtration system with adjustable mineral content according to any one of claims 1-5, characterized in that, The method includes obtaining a preset target mineral content value, setting the voltage of the booster pump to the initial value and emptying the water storage tank; adjusting the voltage of the booster pump and simultaneously detecting the mineral content value of the second TDS device; in response to the detected mineral content value of the second TDS device reaching the target mineral content value, storing water in the water storage tank.

7. The adjustment method according to claim 6, wherein By adjusting the voltage of the booster pump and simultaneously detecting the mineral content value of the second TDS device; includes adjusting the voltage of the booster pump based on a fitting formula or an incremental PID algorithm and simultaneously detecting the mineral content value of the second TDS device.

8. The adjustment method according to claim 7, wherein a first TDS device is provided at the water inlet of the primary filter element; The incremental PID is: Among them, is the voltage of the booster pump that needs to be adjusted, is the current mineral content deviation, is the previous mineral content deviation, is the deviation of the mineral content from the time before last, , , are the coefficients of the PID.

9. The adjustment method according to claim 7, characterized in that, The fitting formula is Among them, is the target mineral content value, is the influent mineral content, is the initial filtration area of the secondary filter element, is the rejection efficiency coefficient of the secondary filter element, is the area adjustment coefficient of the secondary filter element, is the non-linear factor of the secondary filter element, is the pump pressure constant, is the voltage-speed coefficient, is the initial spring stiffness, is the effective area of pressure action, is the voltage of the booster pump.

10. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and configured to run on the processor, characterized in that, When the processor executes the computer program, it implements the adjustment method according to any one of claims 6 to 9.

Images