Softening resin performance monitoring method, water treatment equipment and storage medium

Abstract

The embodiment of the invention provides a softening resin performance monitoring method, water treatment equipment and a storage medium, and the method comprises the following steps: obtaining a first TDS value of a to-be-treated water sample, treating the water sample based on regenerated softening resin, obtaining a second TDS value of the softened water sample, determining the ratio of the first TDS value to the second TDS value, and determining the performance of the softening resin according to the ratio of the first TDS value to the second TDS value; and determining residual use data of the softening resin based on the change trend of the ratio. Whether the softening resin can be fully regenerated or not can be determined by detecting the TDS change trend of the water sample before and after regeneration treatment, so that whether the softening resin is invalid or not is reflected, the residual use data of the softening resin is obtained, a user is helped to timely determine whether the softening resin needs to be replaced or not, and normal use of water treatment equipment is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and particularly to a method for monitoring the performance of softening resin, a water treatment device, and a storage medium. Background Art

[0002] Resin is a material widely used in the process of softening water treatment and is usually used in the ion exchange process of water. The main function of the resin is to replace the hardness ions (such as calcium ions and magnesium ions) in the water with sodium ions, thereby effectively reducing the hardness of the water and avoiding the formation of water scale. However, the resin is not permanently effective, and its service life is limited.

[0003] However, the aging of softening resin is related to various factors, such as the hardness of the water source, the usage frequency of the resin, the number of regenerations, and the quality of the resin. These factors will affect the performance and service life of the resin. Therefore, the service life of softening resin is uneven and difficult to accurately predict. Summary of the Invention

[0004] The main purpose of the present invention is to provide a method for monitoring resin performance, a water treatment device, and a storage medium, aiming to accurately evaluate the softening performance of softening resin, ensure the efficient operation of the water treatment device, and the safety and reliability of water quality. The technical solutions are as follows:

[0005] In a first aspect, an embodiment of the present specification provides a method for monitoring the performance of softening resin, which is applied to a water treatment device and includes:

[0006] Obtain the first TDS value of the water sample to be treated;

[0007] Based on the softening resin after regeneration treatment, treat the water sample to obtain the second TDS value of the water sample after softening treatment;

[0008] Determine the ratio of the first TDS value and the second TDS value;

[0009] Based on the change trend of the ratio, determine the remaining usage data of the softening resin.

[0010] In a second aspect, an embodiment of the present specification provides a water treatment device, including:

[0011] A controller, connected to the soft water system;

[0012] Soft water system, including a soft water valve, a resin tank, a salt box, a raw water quality detector and a soft water quality detector; the soft water valve is connected to the water inlet and the water outlet of the soft water system, and is connected to the resin tank and the salt box, and is connected to the controller; the water inlet of the soft water system is used to access the water sample to be treated; the resin tank is provided with softening resin for softening the water sample to be treated, and the softened water sample in the resin tank can flow out from the water outlet of the soft water system through the soft water valve; the salt box is used to store regeneration salt, and the regeneration salt can enter the resin tank through the soft water valve to regenerate the softening resin in the resin tank; the raw water quality detector is connected to the water inlet for determining the first TDS value of the water sample to be treated; the soft water quality detector is connected to the water outlet for determining the second TDS value of the softened water sample.

[0013] In a third aspect, an embodiment of the present specification provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0014] In the embodiment of the present specification, by obtaining the first TDS value of the water sample to be treated, where TDS is Total Dissolved Solid, and then, based on the softened resin after regeneration treatment, treating the water sample to obtain the second TDS value of the softened water sample, determining the ratio of the first TDS value and the second TDS value, and determining the remaining usage data of the softened resin based on the change trend of the ratio. Since the time for salt absorption and resin flushing during each regeneration treatment is fixed, and the brine reacts chemically with the softened resin, enabling the resin to regain its soft water function. When the softened resin fails, the regeneration treatment cannot restore its performance, resulting in more salt residues during the regeneration treatment. At this time, a large amount of residual salt will be detected in the softened water sample obtained by treating the water sample to be treated with this softened resin, leading to an increase in the TDS value of the water sample. Therefore, by detecting the change trend of the TDS of the water sample before and after the regeneration treatment, it can be determined whether the softened resin is facing failure, and the remaining usage data of the softened resin can be obtained, so as to correctly maintain and timely replace the resin to ensure the efficient operation of the soft water system. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present specification. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1It is a schematic structural diagram of a water treatment device provided by an embodiment of this specification;

[0017] Figure 2 It is a schematic flow diagram of a method for monitoring the performance of softening resin provided by an embodiment of this specification;

[0018] Figure 3 It is a schematic flow diagram of a method for monitoring the performance of softening resin provided by an embodiment of this specification;

[0019] Figure 4 It is a schematic structural diagram of a water treatment device provided by an embodiment of this specification;

[0020] Figure 5 It is a schematic flow diagram of a method for monitoring the performance of softening resin provided by an embodiment of this specification;

[0021] Figure 6 It is an overall water circuit diagram of a water treatment device provided by an embodiment of this invention application.

[0022] Explanation of reference numerals:

[0023] 001, Water purification dispenser; 001a, Raw water inlet; 1A, Faucet; 10, Housing assembly; 10A, Inner cavity; 002, Soft water system; 010, Resin tank; 020, Soft water valve; 021, Main valve body; 0211, Raw water inlet connecting pipe; 0211A, Raw water inlet channel; 0212, First soft water outlet connecting pipe; 0212A, First soft water outlet channel; 0213, Raw water outlet connecting pipe; 0213A, Raw water outlet channel; 0214, Second soft water outlet connecting pipe; 0214A, Second soft water outlet channel; 0215, First valve housing; 0215A, Main chamber; 0215B, First liquid passing channel; 022, Sub valve body; 0221, Second valve housing; 0221A, Fourth liquid passing channel; 0221B, Fifth liquid passing channel; 0221C, Sixth liquid passing channel; 0222, First tank connecting pipe; 0222A, First tank channel; 0223, Second tank connecting pipe; 0223A, Second tank channel; 0224, Salt box connecting pipe; 0224A, Salt passing channel; 0225, Drainage connecting pipe; 023, Spool assembly; 0231, Spool; 0232, Driving part; 024, Jet assembly; 030, Salt box assembly; 032, Salt box; 040, Soft water quality detection component; 004, Hot water system; 20, Hot tank assembly; 21, Tank body; 211, Tank body; 212, Tank top cover; 213, Tank bottom cover; 21a, Heating cavity; 22, Heating element; 221, Terminal; 23, Detection assembly; 232, Water level detection element; 233, High water level probe; 234, Low water level probe; 237, Temperature control element; 2371, Temperature control fixing plate; 2372, Temperature sensor; 2373, Second through hole; 251, Hot tank water replenishing valve; 30, Water pump; 003, Pure water system; 50, Filtration system; 52, Pre - filter element; 53, Reverse osmosis filter element; 54, Waste water drainage pipeline; 541, Waste water drainage pipe; 542, Waste water drainage valve; 56, Pure water return pipeline; 561, Pure water return pipe; 562, Pure water return control component; 563, Pure water return check valve; 57, Pipeline machine; 003a, Pure water outlet valve; 003b, High - pressure switch; 060, Raw water quality detection component; 70, Booster pump. Detailed implementation manners

[0024] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.

[0025] In the description of this specification, it should be understood that terms such as "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of this specification, it should be noted that unless otherwise clearly specified and defined, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally also include steps or units not listed, or may optionally also include other steps or units inherent to these processes, methods, products or devices. For those of ordinary skill in the art, the specific meanings of the above terms in this specification can be understood according to specific circumstances. In addition, in the description of this specification, unless otherwise stated, "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0026] Please refer to Figure 1 , which provides a schematic structural diagram of a water treatment device for the embodiments of this specification.

[0027] With the continuous improvement of people's living standards, the requirements for daily water use are also getting higher and higher. There are a large number of calcium and magnesium ions in domestic water, and the long-term use of water with a relatively high hardness is harmful to the body. Therefore, in the water treatment device 1, the hardness of water is reduced through the softening system 10, and softening materials 11, such as softening resin, are generally used to reduce the hardness of water. When the resin is saturated with adsorption, it needs to be regenerated with high-concentration brine to restore its exchange capacity. As the number of uses increases, the exchange capacity of the resin gradually decreases. When the exchange capacity of the resin is exhausted, it can no longer effectively soften water.

[0028] Based on the above problems, the embodiments of this specification provide a method for monitoring the performance of softening resin. By measuring the initial TDS value (the first TDS value) of the water sample to be treated, then treating the water sample with the softened resin after regeneration treatment to obtain the second TDS value of the softened water sample, then calculating the ratio between the first TDS value and the second TDS value, and judging the remaining service life of the softening resin according to the change trend of this ratio. The salt adsorption and resin flushing time in each regeneration process are fixed, and a chemical reaction occurs between the brine and the resin to restore the softening function of the softening resin. When the function of the softening resin degenerates and cannot be restored by regeneration, the residual amount of salt in the regeneration treatment increases. At this time, the TDS value of the treated water sample will increase, reflecting the residual salt. Therefore, by monitoring the change trend of the TDS value of the water sample before and after regeneration, it is possible to effectively evaluate whether the softening resin fails and determine its remaining service life.

[0029] The following describes in detail the softening resin performance monitoring method provided in this specification in conjunction with specific embodiments.

[0030] Please refer to Figure 2 , which is a schematic flowchart of a softening resin performance monitoring method provided by an embodiment of this specification. As Figure 2 shown, the softening resin performance monitoring method provided by an embodiment of this specification may include the following steps S101 - step S104.

[0031] S101, obtaining the first TDS value of the water sample to be treated;

[0032] In one embodiment, TDS refers to the total amount of all dissolved solid substances in water, including inorganic salts, organic substances, trace metal elements, and other dissolved substances. The unit of TDS is usually milligrams per liter (mg / L) or ppm (parts per million). The measurement of the TDS value usually uses conductivity (EC) to indirectly calculate, because the concentration of dissolved solid substances is positively correlated with the conductivity of water. The TDS value in water can be estimated by measuring the conductivity. Exemplarily, a TDS sensor can be used to detect the water sample, or it can be detected according to the national standard method, such as the standard test method for drinking water in GB / T5750.4 - 2006. The water sample to be treated refers to the water that has not been treated and flows into the water treatment equipment, and can also be called raw water. By installing a TDS sensor at the inlet pipeline of the water sample to be treated, the acquisition of the first TDS value can be achieved.

[0033] S102, treating the water sample based on the softened resin after regeneration treatment, and obtaining the second TDS value of the water sample after softening treatment;

[0034] In one embodiment, the softened resin is a resin material specifically used for softening hard water, and the ion exchange technology is adopted to remove calcium (Ca 2(+) and magnesium (Mg2+) ions. During this process, the cations in the resin will undergo a displacement reaction with the calcium and magnesium ions in the water, adsorbing these hardness ions onto the resin, thereby reducing the water hardness. When the resin is saturated with adsorption, it needs to be regenerated with high-concentration brine to restore its exchange capacity. When the resin reaches a certain service life, long-term chemical reactions or mechanical stress may cause the resin particles to break, resulting in a decrease in the resin volume or a decline in the adsorption capacity of hardness ions. For example, iron ions adhering to the resin may prevent thorough sodium ion exchange. That is, if the aged resin is regenerated, the resin cannot fully restore its exchange capacity, the regeneration effect deteriorates, and more salt residues are generated than when the resin is in normal performance, increasing the TDS value of the water sample. Therefore, by treating the water sample with the softened resin after the regeneration treatment and detecting the TDS value of the treated water sample, it is possible to determine whether the softening performance of the resin has declined.

[0035] S103, determine the ratio of the first TDS value to the second TDS value;

[0036] In one embodiment, to determine the softening performance of the softened resin, the ratio of the first TDS value to the second TDS value is determined. Exemplarily, the second TDS value can be used as the denominator and the first TDS value as the numerator to calculate the ratio. It can be understood that the water sample to be treated is usually the water supply from a waterworks, and the water quality of the waterworks may vary. If the TDS values before and after softening are collected and compared each time the water sample to be treated is softened, the measured results may be different due to different water qualities, thus affecting the accurate judgment of the performance of the softened resin. To control variables, the TDS values are only collected before and after the regeneration treatment of the softened resin, so as to accurately reflect whether the softened resin can still be fully regenerated, and further reflect the remaining service data of the softened resin.

[0037] S104, determine the remaining service data of the softened resin based on the change trend of the ratio.

[0038] In one embodiment, when the resin is in normal performance, the difference in softening performance measured before and after each regeneration treatment is not significant. When the resin begins to fail, the ratio will change significantly, such as showing an obvious upward trend. Therefore, by continuously calculating the ratio and monitoring the change trend of the ratio, the remaining service data of the softened resin can be determined. Optionally, after determining the remaining service data, the remaining service data of the softened resin can be displayed in a certain way. For example, if the remaining service data indicates that the softened resin is about to fail, the user can be prompted to replace the softened resin by means such as lighting a lamp or displaying a prompt message on a display screen.

[0039] In the embodiments of this specification, by obtaining the first TDS value of the water sample to be processed, treating the water sample based on the softened resin after regeneration treatment, obtaining the second TDS value of the water sample after softening treatment, determining the ratio of the first TDS value to the second TDS value, and determining the remaining usage data of the softened resin based on the change trend of the ratio. By detecting the change trend of the TDS of the water sample before and after regeneration treatment, it can be determined whether the softened resin can still be fully regenerated, and further reflect whether the softened resin is facing failure, so as to obtain the remaining usage data of the softened resin, helping the user to determine in time whether it is necessary to replace the softened resin and ensuring the normal use of the water treatment equipment.

[0040] Please refer to Figure 3 , which is a schematic flowchart of a method for monitoring the performance of softened resin provided by the embodiments of this specification. As Figure 3 shown, the method for monitoring the performance of softened resin in the embodiments of this specification may include the following steps S201 - step S205.

[0041] S201, determining a change curve based on the ratio and obtaining the first slope of the change curve;

[0042] In one embodiment, a change curve is determined based on the ratios obtained from multiple calculations between the first TDS value and the second TDS value, the change trend of the ratio is characterized by the change curve, and the first slope of the change curve is obtained. Specifically, collect the first TDS values (the initial TDS values of the water samples to be processed) and the second TDS values (the TDS values of the water samples after softening treatment) before and after multiple regeneration treatments. By calculating the ratio of each group of first TDS values to the corresponding second TDS values, the ratio for each treatment is obtained. Then, plot all the ratio data points into a change curve, with the abscissa being the number of experiments or time and the ordinate being the ratio. Then, through mathematical methods, such as the least squares method, fit this change curve to obtain the mathematical expression of the curve. Finally, calculate the first slope of this change curve, that is, the derivative of the curve at a certain point or within the entire range. The magnitude of the slope reflects the rate of change of the ratio. By analyzing the change trend of the slope, the performance change of the softened resin can be further inferred, providing a basis for judging its remaining service life.

[0043] S202, when the first slope is greater than the first preset threshold, determining that the softened resin enters the failure stage;

[0044] In one embodiment, as the softened resin is used and the number of regeneration cycles increases, the performance of the resin gradually degrades. When the resin ages, although the regeneration process remains consistent, i.e., the same drainage time and the same brine exchange process, due to the decrease in the resin's regeneration ability, the brine cannot be fully exchanged with the resin, resulting in an increase in the salt residue. In this way, the second TDS value in the treated water sample will be much higher than the value under normal conditions. Usually, when the resin is working properly, the second TDS value is lower than the first TDS value, indicating that the dissolved solids in the water are effectively removed. However, when the resin begins to fail, the second TDS value will increase significantly. Specifically, when the first slope exceeds the first preset threshold, it means that the rate of change of the ratio accelerates, which usually indicates that the resin has entered the failure stage. The initial TDS value (the first TDS value) of the raw water is usually between 100 - 300 mg / L. When it is completely failed, the second TDS value may be as high as 1200 mg / L, while the second TDS value should be about 20 mg / L under normal softening conditions. Therefore, by monitoring the change in the TDS value and the first slope, it is possible to effectively determine whether the softened resin has entered the failure stage and take corresponding measures to replace or regenerate the resin. Among them, the first preset threshold is a key parameter used to characterize the steepness of the ratio change curve. Specifically, during the use of the resin, the increase in the ratio may be gradual or relatively stable, but when the resin is about to fail, the rate of change of the ratio will increase significantly, causing the curve to suddenly become steep. The first preset threshold is the "critical point" used to detect this rate change. The first preset threshold can be calibrated according to the actual situation of different softened resins.

[0045] S203. Determine the first remaining service life data of the softened resin based on the first preset threshold;

[0046] In one embodiment, the first remaining service life data refers to how much effective service life the resin still has after the first preset threshold is detected during the use of the resin. Since it is not easy to determine the exact service life, which may be affected by various factors, the first remaining service life data can be an approximate remaining effective service level. Alternatively, the first remaining service life data can also directly indicate that the softened resin has begun to fail and it is recommended to replace it in a timely manner.

[0047] Exemplarily, a large number of experiments are conducted on resins of different brands / batches, the curves of the change of the TDS ratio with time or usage amount are recorded, and the critical points of the change rate of the ratio at different usage stages are calibrated. According to the experimental data, a first preset threshold is set, that is, the critical value of the change of the slope of the change curve. During actual use, the change of the TDS value before and after regeneration is monitored, and when the change rate of the curve exceeds the threshold, the remaining service life is estimated using the calibrated data. It can be understood that since the service life of the resin is usually relatively long, through some chemical or physical experiments, the resin can be induced to age or fail in advance, and then the first preset threshold is determined using this sample, so that the aging or failure situation of the resin can be accurately found according to the first preset threshold.

[0048] S204, obtain a second slope of the change curve after entering the failure stage;

[0049] In one embodiment, after determining the first remaining usage data, the second slope after entering the failure stage can also be continuously detected. When the resin enters the failure stage, the second TDS value begins to rise significantly, indicating that the performance of the resin is rapidly declining.

[0050] S205, when the second slope is greater than a second preset threshold, determine second remaining usage data of the softening resin based on the second preset threshold.

[0051] In one embodiment, a second preset threshold is set. When it is detected that the second slope is greater than the second preset threshold after entering the failure stage, it indicates that the performance of the resin has decreased sharply. Based on the change of this slope, the second remaining usage data of the resin, that is, the remaining life is very short, and it is necessary to consider replacing or regenerating the resin as soon as possible. Among them, the second preset threshold is a key parameter used to calibrate that the change rate of the TDS value becomes steeper after the resin enters the failure stage. In the failure stage, the change of the ratio curve is more intense, and the second preset threshold is usually higher than the first preset threshold. When the performance of the resin decreases in the initial stage, the change of the TDS value may be relatively gentle and only becomes steep until approaching the failure point. The setting of the second preset threshold ensures that monitoring can be carried out when the change of the TDS value accelerates and further analyzes the usage of the resin. For example, when the first slope is greater than the first preset threshold, it indicates that the usage degree of the resin reaches 80%, and when the second slope is greater than the second preset threshold, it indicates that the usage degree of the resin reaches 90%. It can be understood that when detecting the second slope in the failure stage, in addition to setting the second preset threshold, a third preset threshold can also be set according to requirements, etc., so as to more accurately track and feedback the remaining usage data of the softening resin. However, after the resin starts to fail, its second TDS value may not continue to increase. It may reach a certain degree of complete failure and no longer increase. Therefore, it is not accurate to judge only by the slope. At this time, a ratio threshold can be set to judge the remaining usage data of the softening resin in combination with the slope.

[0052] Further, in one embodiment, the method may include the following steps S301-S302:

[0053] S301, obtaining the resin type of the softening resin;

[0054] In one embodiment, since different softening resins have different usage performances, the resin type of the currently used softening resin can be obtained, and the corresponding first preset threshold and second preset threshold can be determined according to different resin types.

[0055] Exemplarily, the softening resin includes those selected from polystyrene resin, polystyrene sulfonic acid and its salts, polyvinylbenzyltrimethylammonium hydroxide, etc.

[0056] S302, determining the first preset threshold and the second preset threshold based on the resin type.

[0057] Specifically, in order to set different first preset thresholds and second preset thresholds according to different types of softening resins, the parameters can be customized by identifying the chemical composition and performance characteristics of the resins. For example, strongly acidic cation resins usually have strong adsorption capacity and long service life, and their failure mode may be relatively gentle, so higher threshold settings are required; while weakly acidic cation resins have weak adsorption capacity and are prone to early failure, so their threshold settings are usually lower.

[0058] In a feasible implementation, the water sample can be softened by using the known failed softening resin, and the TDS value of the softened water sample obtained can be detected. Finally, the obtained TDS value is used as the preset threshold. In addition, experiments are carried out separately according to different known failure degrees, so as to obtain the preset thresholds corresponding to different failure degrees.

[0059] In the embodiment of this specification, after determining the ratio of the first TDS value and the second TDS value, a change curve is determined based on the ratio, and the first slope of the change curve is obtained. When the first slope is greater than the first preset threshold, it is determined that the softening resin enters the failure stage, and the first remaining service data of the softening resin is determined based on the first preset threshold. The second slope of the change curve after entering the failure stage is obtained. When the second slope is greater than the second preset threshold, the second remaining service data of the softening resin is determined based on the second preset threshold.

[0060] Please refer to Figure 4 , which provides a schematic structural diagram of a water treatment device for an embodiment of the present application. The water treatment device 2 includes a controller (not shown), a soft water system 002 and a purified water system 003. The soft water system 002 includes a resin tank 010, a soft water valve 020, a salt box 030, a raw water quality detector 21, and a soft water quality detector 23. The soft water valve 020 is connected to the water inlet and the water outlet of the soft water system 002, and is connected to the resin tank 010 and the salt box 030, and is connected to the controller; the resin tank 010 is provided with softening resin for softening the water sample to be treated; the salt box 030 is used to store the regeneration salt, and the regeneration salt can enter the resin tank 010 through the soft water valve 020 to regenerate the softening resin in the resin tank 010; the raw water quality detector 21 is connected to the water inlet for determining the first TDS value of the water sample to be treated; the soft water quality detector 23 is connected to the water outlet for determining the second TDS value of the water sample after softening treatment.

[0061] When the soft water mode is started, the controller can control the soft water valve to connect the water inlet of the soft water system and the resin tank, and connect the water outlet of the resin tank and the water outlet of the soft water system. At this time, hard water can enter the resin tank through the soft water valve. Sodium ions on the resin in the resin tank can exchange with calcium and magnesium ions in the hard water, thereby adsorbing the calcium and magnesium ions, turning the water sample to be treated into soft water, and storing it in the resin tank. When the user takes pure water from the faucet, the soft water in the resin tank can flow out through the water outlet of the soft water valve (the water outlet of the soft water system) and enter the water purification system. After being filtered by the water purification system, the soft water can be directly output to the faucet to provide normal temperature pure water for the user; after being filtered by the water purification system, the soft water can also be output to the hot water tank assembly or the pipeline machine for heating and then output to the faucet to provide hot water for the user.

[0062] When the regeneration mode is started, the controller controls the soft water valve to connect the water inlet and the water outlet of the soft water system, controls the soft water valve to connect the resin tank and the salt box, and controls the soft water valve not to connect the resin tank and the water outlet of the soft water system. At this time, the water sample to be treated enters the resin tank through the soft water valve and enters the salt box from the resin tank through the soft water valve. After the water in the resin tank enters the salt box, it contacts the regeneration salt in the salt box and melts the regeneration salt to form brine. The soft water valve can suck the brine in the salt box into the resin tank to use the sodium ions in the brine to replace the calcium and magnesium ions on the resin, thereby restoring the softening ability of the resin.

[0063] Please refer to Figure 5 , which is a schematic flow chart of a method for monitoring the performance of softening resin provided by an embodiment of this specification. In the embodiments of this specification, in combination with Figure 4 the hardware structure of the water treatment equipment shown, the method for monitoring the performance of softening resin is described. As Figure 5 shown, the method may include the following steps S401 - step S405.

[0064] S401, obtaining a first TDS value of the water sample to be treated at the water inlet based on the raw water quality detection component;

[0065] In one embodiment, the water treatment equipment includes a resin tank and a raw water quality detection component. The raw water quality detection component is connected to the water inlet of the resin tank, and the softening resin is arranged in the soft water system. It can be understood that the water inlet of the resin tank is also the water inlet of the soft water system. The soft water system may include a soft water valve, which is connected to the resin tank and the water inlet. The water sample to be treated flows into the soft water valve from the water inlet, flows into the resin tank through the soft water valve, and is softened by the softening resin in the resin tank to obtain soft water. By installing a raw water quality detection component at the water inlet of the soft water system, the first TDS value of the water sample to be treated can be accurately collected.

[0066] Further, in one embodiment, the soft water system includes a salt tank, and the method further includes:

[0067] S402, regenerating the softening resin based on the regeneration component to obtain the regenerated softening resin;

[0068] In one embodiment, the regeneration component is used to supply a regenerant to the resin tank to regenerate the softening resin. Optionally, the regeneration component can be a salt tank, and the regenerant is an aqueous NaCl solution. Generally speaking, the regeneration process includes four steps: salt dissolution, salt absorption, normal flushing, and backwashing. When regeneration treatment is required, water can be injected into the salt tank, and the water injected into the salt tank can be the water sample to be treated or soft water to dissolve the salt in the salt tank; after the water is injected into the salt tank, the salt in the salt tank can be dissolved for a period of time, and then the brine in the salt tank is controlled to be sent into the soft water system to clean the softening resin in the soft water system. Then, the water sample to be treated is controlled to pass through the resin tank to clean the softening resin washed by the brine, and the regenerated softening resin is obtained. The cleaning mode includes at least one of the backwashing mode and the normal flushing mode.

[0069] It can be understood that a soft water valve can be provided in the soft water system to control the salt dissolution, salt absorption, and cleaning steps. The soft water valve is connected to the water inlet and outlet of the soft water system, and is also connected to the resin tank and the salt tank, and is connected to the controller of the water treatment device. The regenerated salt in the salt tank can enter the resin tank through the soft water valve to regenerate the softening resin in the resin tank. At the same time, the water sample to be treated can also flow into the resin tank from the soft water valve. In addition, the cleaning wastewater generated during regeneration can be discharged from the brine drainage pipeline of the soft water system.

[0070] S403, treating the water sample based on the regenerated softening resin, and obtaining the second TDS value of the softened water sample at the outlet of the soft water system based on the soft water quality detection component;

[0071] In one embodiment, the water treatment device includes a soft water system and a soft water quality detection component. The soft water quality detection component is connected to the outlet of the soft water system, and the softening resin is arranged in the soft water system. After the water sample to be treated is treated in the soft water system, it is discharged from the outlet of the soft water system. By installing a soft water quality detection component at the outlet, the collection of the TDS value of the softened water can be realized.

[0072] S404, determining the ratio of the first TDS value and the second TDS value based on the controller;

[0073] In one embodiment, after the raw water quality detector and the softened water quality detector collect the first TDS value and the second TDS value, they can transmit the data to the controller in the water treatment device. The controller performs calculations to determine the ratio of the first TDS value to the second TDS value. In addition, the ratio calculated each time can be stored in the memory.

[0074] S405, the controller determines the remaining usage data of the softening resin based on the change trend of the ratio.

[0075] In one embodiment, the controller determines the change trend based on the ratios calculated before and after multiple regeneration processes, and then determines the remaining usage data of the softening resin according to the change trend.

[0076] In the embodiments of this specification, a water quality detector is installed at each of the water inlet and outlet of the soft water system to collect the first TDS value and the second TDS value before and after the regeneration component regenerates the softening resin, send the collected TDS values to the controller, calculate the ratio of the first TDS value to the second TDS value through the controller, and determine the remaining usage data of the softening resin based on the change trend of the ratio.

[0077] Please refer to Figure 6 , the overall water circuit diagram of a water treatment device provided by an embodiment of the present invention application. In one embodiment, the water treatment device 001 includes a soft water system 002, a purified water system 003, and a hot water system 004.

[0078] The soft water system 002 includes a resin tank 010, a soft water valve 020, and the resin tank 010. Raw water enters through the raw water inlet channel of the soft water valve 020 and flows out as softened water through the first softened water outlet channel of the soft water valve 020 after passing through the resin tank 010.

[0079] The soft water system 002 further includes a salt tank assembly 030. The salt tank assembly 030 can provide salt for the resin tank 010. Raw water obtains salt through the salt tank connection pipe of the soft water valve 020 to form brine, and then completes the ion exchange with the resin tank 010 to complete the regeneration process, and finally is discharged through the sewage connection pipe of the soft water valve 020, eliminating the need for users to manually add salt, thus facilitating the use of the water purifier 001 by users.

[0080] The soft water system 002 further includes a soft water quality detector 040. When the soft water quality detector 040 detects that the TDS value of the softened water flowing out of the first softened water outlet channel of the soft water valve 020 is abnormal, the water purifier 001 starts the regeneration step of the resin tank 010.

[0081] When the regeneration mode is started, the controller controls the soft water valve 020 to disconnect the resin tank 010 from the water outlet of the soft water system 002, and controls the soft water valve 020 to connect the water inlet and the water outlet of the soft water system 002, and controls the soft water valve 020 to connect the resin tank 010 with the salt box 030. At this time, hard water enters the resin tank 010 through the soft water valve 020 and enters the salt box 030 from the resin tank 010 through the soft water valve 020. After the water in the resin tank 010 enters the salt box 030, it contacts the regeneration salt in the salt box 030 and melts the regeneration salt to form brine. The soft water valve 020 can suck the brine in the salt box 030 into the resin tank 010 to replace the calcium and magnesium ions on the resin with sodium ions in the brine, so as to restore the softening ability of the resin.

[0082] The water purification system 003 includes a pre-filter element 52, a reverse osmosis filter element 53, a booster pump 70 and a waste water drainage pipeline 54. The soft water flowing out from the first soft water channel of the soft water valve 020 first passes through the pre-filter element 52 and then enters the booster 70. Driven by the booster pump 70, it enters the reverse osmosis filter element 53, and pure water is obtained under the filtration of the reverse osmosis filter element 53. The concentrated water of the reverse osmosis filter element 53 is discharged from the waste water drainage pipeline 54.

[0083] The pre-filter element 52 filters large particle impurities in raw water or soft water, thereby reducing the filtration pressure of the reverse osmosis filter element 53 and further increasing the service life of the reverse osmosis filter element 53. The pre-filter element 52 can be one or more of a stainless steel filter element, a PP cotton filter, a ceramic filter, a compression filter, an activated carbon filter, etc., and no specific limitation is made here. The pre-filter element 52 can remove visible impurities such as sediment, rust, and insect eggs in water.

[0084] The reverse osmosis technology utilizes the principle of a semi-permeable membrane. Under the action of a pressure higher than the osmotic pressure of the solution, water passes through the semi-permeable membrane while microorganisms, dissolved salts, colloidal substances, heavy metal ions, etc. cannot pass through, so as to achieve the purposes of separation, purification and concentration. The main function of the booster pump 70 is to increase the pressure of water and provide sufficient driving force for the reverse osmosis filter element 53 to work, so that water can overcome the resistance of the membrane of the reverse osmosis filter element 53 and smoothly pass through the membrane of the reverse osmosis filter element 53 to effectively separate impurities, salts, etc. in water.

[0085] The wastewater drainage pipeline 54 is connected to the wastewater outlet of the reverse osmosis filter element 53, and the wastewater drainage pipeline 54 is used to discharge the concentrated water of the reverse osmosis filter element 53. With such a setting, the concentrated water in the reverse osmosis filter element 53 can be discharged through the wastewater drainage pipe 541, which can maintain the osmotic pressure balance of the reverse osmosis filter element 53, thereby ensuring the filtration effect of the reverse osmosis filter element 53. Moreover, the concentrated water contains high-concentration impurities and salts that may crystallize and precipitate on the membrane surface of the reverse osmosis filter element 53, causing membrane pore blockage and reducing the water permeability of the membrane. Therefore, discharging the concentrated water can play a protective role for the reverse osmosis filter element 53, and further improve the service life of the reverse osmosis filter element 53.

[0086] Preferably, please refer to Figure 6 , the wastewater drainage pipeline 54 includes a wastewater drainage pipe 541 and a wastewater drainage valve 542. The wastewater drainage pipe 541 is connected to the wastewater outlet of the reverse osmosis filter element 53, and the wastewater drainage valve 542 is installed on the wastewater drainage pipe 541. With such a setting, the flow rate of the concentrated water in the wastewater drainage pipe 541 can be controlled through the wastewater drainage valve 542, so that the filtration efficiency of the reverse osmosis filter element 53 is in the best state, and a certain amount of soft water can be treated per unit time and effectively separated into pure water and concentrated water. The system operates stably, and the ratio of the amount of pure water to the amount of concentrated water is relatively stable, which can meet the designed treatment capacity.

[0087] When the drainage speed is too slow and the residence time of the concentrated water on the membrane surface of the reverse osmosis filter element 53 is too long, it will hinder the contact and separation process between the subsequent incoming water and the membrane of the reverse osmosis filter element 53, reducing the filtration efficiency of the reverse osmosis filter element 53, manifested as a decrease in the water output and a reduction in the amount of soft water treated per unit time. When the drainage speed is too fast, although the concentrated water can be quickly taken away, it may change the pressure difference on both sides of the membrane, affecting the driving force for water molecules to pass through the membrane of the reverse osmosis filter element 53, and also reducing the filtration efficiency, resulting in a decrease rather than an increase in the water production. At the same time, it may increase energy consumption.

[0088] The hot water system 004 includes a hot water tank assembly 20 and a hot water tank water replenishing valve 251 connected to the hot water tank assembly 20. The hot water tank water replenishing valve 251 is connected to the water outlet of the reverse osmosis filter element 53, and the hot water tank assembly 20 is used to provide hot water softened by the soft water system 002 and purified by the water purification system 003 to users. The hot water tank assembly 20 is mainly used to store and heat pure water to provide hot water for users. With such a setting, when users need hot water, the hot water tank assembly 20 can provide hot water for users in a timely manner, thereby shortening the waiting time for users to heat hot water and improving the user experience.

[0089] The hot water tank water replenishing valve 251 is used to control the water inlet of the hot water tank assembly 20, so as to prevent the pure water filtered by the reverse osmosis filter element 53 from directly entering the hot water tank assembly 20 when users are receiving water, which affects the hot water temperature in the hot water tank assembly 20. Furthermore, the hot water tank assembly 20 can provide hot water with a stable temperature for users.

[0090] There are many ways to heat the hot water tank assembly 20. The hot water tank assembly 20 can heat pure water by means of resistance heating, or can also heat pure water by means of induction heating, and can also heat pure water by means of infrared heating. Specific limitations are not made herein.

[0091] When the water in the hot water tank assembly 20 is insufficient, it can be that the user manually opens the hot water tank water replenishing valve 251 to replenish pure water for the heat pipe assembly, or a water level detection assembly 23 and a control board can be provided in the hot water tank assembly 20. When the water level detection assembly 23 detects that the pure water in the hot water tank assembly 20 is insufficient, the control board will open the hot water tank water replenishing valve 251 to replenish water for the hot water tank assembly 20. They are not listed one by one herein.

[0092] The hot water system 004 further includes a water pump 30. The water inlet of the hot water tank assembly 20 is communicated with the water outlet of the reverse osmosis filter element 53, and the water inlet end of the water pump 30 is communicated with the water outlet of the hot water tank assembly 20. With such a setting, the pure water can be stored by the hot water tank assembly 20, and when the user needs hot water, the hot water tank assembly 20 can quickly provide hot water, without the user having to wait for a long time for the hot water system 004 to heat the water. At the same time, the water pump 30 can improve the water outlet efficiency of the hot water tank assembly 20.

[0093] The water purification system 003 further includes a pure water outlet valve 003a, and the pure water outlet valve 003a is arranged between the pure water outlet and the water outlet of the reverse osmosis filter element 53. With such a setting, the user can control the water outlet or stop the water outlet at the pure water outlet by controlling the on-off of the pure water outlet valve 003a.

[0094] Specifically, the water purifier 001 further includes a faucet 1A, and the faucet 1A is communicated with the pure water outlet and the water outlet of the hot water system 004. The faucet 1A is used to control the water outlet at the pure water outlet and the water outlet of the hot water system 004. With such a setting, the user can switch the water outlet at the pure water outlet and the hot water outlet through the faucet 1A according to needs, which is convenient for the user to operate, and the water output at the pure water outlet and the water output at the hot water outlet can be adjusted through the faucet 1A to obtain water with a suitable water temperature.

[0095] In some embodiments, the water purifier 001 further includes a pipeline machine 57, and the pipeline machine 57 is communicated with the water outlet of the reverse osmosis filter element 53. With such a setting, the user can obtain pure water filtered by the soft water system 002 and the reverse osmosis filter element 53 through the pipeline machine 57. The pipeline machine 57 generally has multiple water volume selections. The user can easily select the required water volume according to his own needs through button or touch operation, without using other containers for measurement, which is convenient and fast, and avoids the problem of taking too much or too little water, thereby improving the user experience.

[0096] An embodiment of this specification also provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the method of the embodiment as described above Figures 2 - 5 shown in the embodiment, and the specific execution process can be referred to Figures 2 - 5 the specific description of the embodiment shown, which will not be elaborated here.

[0097] Those of ordinary skill in the art can understand that all or part of the processes in implementing the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above methods. Among them, the storage medium can be a magnetic disk, an optical disc, a read-only memory (ROM), or a random access memory (RAM), etc.

[0098] The above-disclosed are only the preferred embodiments of this specification. Of course, the scope of rights of this specification cannot be limited thereby. Therefore, equivalent changes made according to the claims of this specification still fall within the scope covered by this specification.

Claims

1. A method for monitoring the performance of a softened resin, characterized in that: Applied to water treatment equipment, the method comprises: Obtaining a first TDS value of the water sample to be processed; Treating the water sample based on the softened resin after the regeneration treatment to obtain a second TDS value of the softened water sample; determining a ratio of the first TDS value to the second TDS value; The remaining usage data of the softening resin is determined based on the variation trend of the ratio.

2. The method according to claim 1, characterized in that The determining the remaining usage data of the softening resin based on the variation trend of the ratio includes: Determine a change curve based on the ratio, and obtain a first slope of the change curve; When the first slope is greater than a first preset threshold, determining that the softened resin enters a failure stage; First remaining usage data of the softening resin is determined based on the first preset threshold value.

3. The method according to claim 2, characterized in that After determining the first remaining usage data of the softening resin based on the first preset threshold, the method further includes: Acquire a second slope of the variation curve after entering the failure stage; When the second slope is greater than a second preset threshold, second remaining usage data of the softening resin is determined based on the second preset threshold; the second preset threshold is greater than the first preset threshold.

4. The method according to claim 3, characterized in that The method further comprises: Obtaining the resin type of the softened resin; The first preset threshold and the second preset threshold are determined based on the resin type.

5. The method according to claim 1, characterized in that The water treatment equipment comprises a resin tank and a raw water quality detection element, the raw water quality detection element is connected to the water inlet of the resin tank, and the softening resin is arranged in the resin tank; The step of obtaining a first TDS value of the water sample to be processed comprises: A first TDS value of the water sample to be treated at the water inlet is obtained based on the raw water quality detection component.

6. The method according to claim 1, characterized in that The water treatment equipment comprises a resin tank and a soft water quality detection component, the soft water quality detection component is connected to the water outlet of the resin tank, and the softening resin is arranged in the resin tank; The step of processing the water sample based on the softened resin after the regeneration treatment to obtain a second TDS value of the water sample after the softening treatment includes: The water sample is treated based on the softened resin after the regeneration treatment, and a second TDS value of the softened water sample at the water outlet of the resin tank is obtained based on the soft water quality detection component.

7. The method according to claim 6, characterized in that The soft water system includes a regeneration component; Before the water sample is treated by the softening resin after the regeneration treatment, the method further comprises: The softened resin is regenerated based on the regeneration component to obtain a regenerated softened resin.

8. A water treatment device, characterized in that: include: A controller connected to the soft water system; A soft water system comprises a soft water valve, a resin tank, a salt box, a raw water quality detection component and a soft water quality detection component; the soft water valve is connected to the water inlet and the water outlet of the soft water system, and is connected to the resin tank and the salt box, and is connected to the controller; the water inlet of the soft water system is used to connect the water sample to be treated; the resin tank is provided with a softening resin for softening the water sample to be treated, and the softened water sample in the resin tank can flow out from the water outlet of the soft water system through the soft water valve; the salt box is used to store regeneration salt, and the regeneration salt can enter the resin tank through the soft water valve to regenerate the softening resin in the resin tank; the raw water quality detection component is connected to the water inlet for determining a first TDS value of the water sample to be treated; the soft water quality detection component is connected to the water outlet for determining a second TDS value of the softened water sample.

9. The water treatment equipment according to claim 8, characterized in that: The water treatment equipment also includes: A water purification system, wherein the water inlet of the water purification system is connected to the water outlet of the soft water system, and the water purification system is used to filter the softened water sample.

10. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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