CN115477360A

CN115477360A - Water softening equipment

Info

Publication number: CN115477360A
Application number: CN202210194298.9A
Authority: CN
Inventors: 李金鑫; 李高杰; 高文帅; 杨薛琳
Original assignee: Qingdao Haier Strauss Water Equipment Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Strauss Water Equipment Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-12-16

Abstract

The embodiment of the invention discloses a water softening device, which comprises: a control device, 1 st to Nth water softening devices and at least one regeneration tank; the control device is used for controlling the jth water softening device to be communicated with the regeneration tank to enter the regeneration mode when the ith water softening device is in the soft water mode. In the embodiment of the invention, a plurality of water softening devices are arranged to replace and execute the water softening operation, so that the problem that the water softening equipment cannot provide soft water in time during regeneration is avoided; when the ith water softening device is in the soft water mode, the jth water softening device is controlled to be communicated with the regeneration tank to enter the regeneration mode, so that the resin of the jth water softening device is softened and regenerated, the regeneration time of the jth water softening device does not need to be additionally reserved, and the problem that the soft water cannot be provided for users in time due to the simultaneous regeneration of all the water softening devices is solved; the control device can automatically switch the water channel to continuously supply soft water for the user, and the requirement of using the soft water at any time by the user is met.

Description

Water softening equipment

Technical Field

The embodiment of the invention relates to the technical field of water treatment equipment, in particular to water softening equipment.

Background

The water softener is used for reducing the hardness of water by passing tap water through a resin tank filled with resin to generate soft water for users. As the water softener age increases, the resin tank becomes increasingly saturated with resin.

At present, the resin is regenerated by utilizing brine backwashing, so that the saturation degree of the resin can be reduced, and the softening capacity of the resin is recovered. The time required for backwashing regeneration operation of the water softener is about 1 hour, and most water softeners set the regeneration time at night.

However, if the user manually operates the water softener to immediately regenerate in the daytime, the water softener cannot continue to perform the soft water operation in the process of salt suction backwashing, and pain is caused to the user when using the water softener.

Disclosure of Invention

The embodiment of the invention provides water softener, which aims to solve the problem that the conventional water softener cannot continuously supply soft water.

An embodiment of the present invention provides a water softening apparatus, including: a control device, 1 st to Nth water softening devices and at least one regeneration tank;

the first input end of the water softening device is connected with the raw water pipe, the first output end of the water softening device is connected with the water outlet pipe, and the second input end of the water softening device is connected with the regeneration tank;

the working process of the water softening device comprises a water softening mode and a regeneration mode;

the control device is used for controlling the jth water softening device to be communicated with the regeneration tank to enter the regeneration mode when the ith water softening device is in the soft water mode, wherein the value of N is a positive integer larger than or equal to 2, i is not less than 1 and not more than N, j is not less than 1 and not more than N, and i is not equal to j.

Furthermore, a first input end of the water softening device is connected with the raw water pipe through a first switch, a first output end of the water softening device is connected with the water outlet pipe through a second switch, a second input end of the water softening device is connected with the regeneration tank through a third switch, and a second output end of the water softening device is connected with the sewage pipe through a fourth switch;

the control end of the first switch, the control end of the second switch, the control end of the third switch and the control end of the fourth switch are respectively connected with the control device.

Furthermore, a water quality monitoring unit is arranged between the first output end of the water softening device and the second switch, and the water quality monitoring unit acquires water quality parameters of water output by the water softening device;

the control device is electrically connected with the water quality monitoring unit and used for controlling the third switch of the jth water softening device to be opened and the second switch to be closed to enter the regeneration mode when the water quality parameters of the jth water softening device do not meet the water quality condition of the soft water.

Further, the control device comprises a counting unit, and the counting unit is used for counting the opening times of each second switch according to the control information of the control device;

the control device is used for controlling the third switch of the j-th water softening device to be opened and the second switch to be closed to enter the regeneration mode when the opening times of the second switch of the j-th water softening device exceed a first time threshold value.

Further, the control device comprises a timing unit, and the timing unit is used for counting the starting time of each second switch according to the control information of the control device;

the control device is used for controlling the third switch of the j-th water softening device to be opened and the second switch to be closed to enter the regeneration mode when the opening duration of the second switch of the j-th water softening device exceeds a first time threshold.

Further, the input end of the regeneration tank is connected with the water outlet pipe through a fifth switch;

the regeneration tank comprises a liquid level meter, and the liquid level meter collects water level parameters of the regeneration tank;

the control device is electrically connected with the liquid level meter and is used for controlling the fifth switch to be turned on when the water level parameter of the regeneration tank is lower than a first water level height, and controlling the fifth switch to be turned off when the water level parameter of the regeneration tank is higher than a second water level height, wherein the first water level height is smaller than the second water level height.

Further, the regeneration tank comprises a concentration detector, and the concentration detector acquires solution concentration parameters of the regeneration tank;

the water softening equipment further comprises an alarm, the control device is respectively electrically connected with the alarm and the concentration detector and used for triggering the alarm to give an alarm when the solution concentration parameter of the regeneration tank does not meet the regeneration solution condition.

Further, the method comprises the following steps: a first regeneration tank and a second regeneration tank;

the second input end of the water softening device is respectively connected with the two regeneration tanks;

the control device is used for controlling the water softening device to be connected with the first regeneration tank or the second regeneration tank.

Further, the water softening device comprises a resin tank; the regeneration tank includes a salt solution.

Further, the third output end of the water softening device is connected with the regeneration tank through a filter.

In the embodiment of the invention, a plurality of water softening devices are arranged, so that the water softening operation can be replaced and executed, and the problem that soft water cannot be timely provided for users when the water softening equipment is regenerated due to only one water softening device is solved; when the ith water softening device is in the soft water mode, the control device can also control the jth water softening device to communicate with the regeneration tank so as to enter the regeneration mode, so that the resin of the jth water softening device is softened and regenerated until the resin softening capacity meets the requirement of the soft water function, the jth water softening device can execute the soft water operation, the regeneration time does not need to be additionally reserved, and the problem that the soft water cannot be timely provided for users due to the simultaneous regeneration of each water softening device can not be generated. According to the water softening equipment provided by the embodiment of the invention, the control device can fully automatically switch the water paths, so that the purpose of continuously supplying soft water to a user is realized, and the requirement of using the soft water at any time by the user is met.

Drawings

While the drawings used in the description of the embodiments or prior art will be described briefly to more clearly illustrate the embodiments or prior art, it is obvious that the drawings in the description will be some specific embodiments of the present invention, and it will be obvious to those skilled in the art that the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested by the various embodiments of the present invention can be extended and extended to other structures and drawings without doubt being within the scope of the claims of the present invention.

FIG. 1 is a schematic view of a water softening apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of another water softening apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view of still another water softening apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic view of another water softening apparatus provided by an embodiment of the present invention;

FIG. 5 is a schematic view of another water softening apparatus provided by an embodiment of the present invention;

fig. 6 is a schematic view of still another water softening apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the basic idea disclosed and suggested by the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1, there is shown a schematic view of a water softening plant according to an embodiment of the present invention. In this embodiment, the water softening apparatus includes: a control device 10, 1 st to nth water softening devices 20, and at least one regeneration tank 30; the first input end of the water softener 10 is connected with the raw water pipe 40, the first output end is connected with the water outlet pipe 50, and the second input end is connected with the regeneration tank 30; the working process of the water softening device 20 comprises a water softening mode and a regeneration mode; the control device 10 is used for controlling the jth water softening device to be communicated with the regeneration tank 30 to enter a regeneration mode when the ith water softening device is in a water softening mode, wherein the value of N is a positive integer greater than or equal to 2, i is greater than or equal to 1 and less than or equal to N, j is greater than or equal to 1 and less than or equal to N, and i is not equal to j.

In this embodiment, the water softening apparatus includes a control device 10, and the control device 10 is a main control unit of the water softening apparatus and is used for electrically connecting various electric control units in the water softening apparatus to control the water softening apparatus to perform a water softening function or a regeneration function. Specifically, the control device 10 is electrically connected to the electrical components of each water softening device 20, and the control device 10 controls the water softening device 20 to perform the water softening operation according to a water use command of a user, or controls whether the water softening device 20 performs the regeneration operation according to a preset regeneration rule. The control device 10 is also electrically connected to the electric devices in the regeneration tank 30, and the control device 10 is used for controlling the regeneration tank 30 to perform the regeneration operation according to the regeneration instruction of the user or controlling whether the regeneration tank 30 performs the regeneration operation according to the preset regeneration rule.

The water softening plant comprises the 1 st to the Nth water softening devices 20, and N is a positive integer greater than or equal to 2, and then the water softening plant comprises at least two water softening devices 20, wherein N =2 is taken as an example in FIG. 1, and the water softening plant comprises the 1 st water softening device and the 2 nd water softening device. It is understood that the water softening device 20 is a collection of all components that perform the water softening operation, for example, the water softening device 20 includes a resin tank containing a water-softening resin. The control device 10 can control one water softening device 20 to operate independently for one period. Alternatively, the control device 10 may control two or more water softening devices 20 of the N water softening devices 20 to operate simultaneously during a period of time, and the operation of the water softening devices 20 includes water softening and/or regeneration. For the same water softening device 20, the water softening operation and the regeneration operation are performed in time division; for a plurality of water softening devices 20, the water softening operation of one water softening device 20 may overlap with the time period of the regeneration operation of another water softening device 20; the operation of the water softening apparatus is not particularly limited.

The water softening device can be any water softening device, for example, the water softening device is a water softening device capable of being regenerated cyclically, and the third output end of the optional water softening device is connected with the regeneration tank through a filter, and the structure of the water softening device is not particularly described.

The first input end of the water softening device 10 is connected to the raw water pipe 40, so that the water softening device 10 can receive raw water such as tap water to be softened after being communicated with the raw water pipe 40. The first output end of the water softening device 10 is connected to the water outlet pipe 50, and the water softening device 10 can output the softened soft water to a user after being communicated with the water outlet pipe 50. The second input end of the water softening device 10 is connected to the regeneration tank 30, and the water softening device 10 can perform the regeneration operation after being connected to the regeneration tank 30.

The water softening plant further comprises at least one regeneration tank 30, one regeneration tank 30 being exemplified in fig. 1. A second input of each water softening device 10 is connected to a regeneration tank 30. The optional regeneration tank 30 includes a salt solution.

The operation of the water softening device 20 includes a water softening mode and a regeneration mode.

If the user inputs a water use command, the controller 10 selects a target water diversion device to perform a water softening operation, and the selected target water softening device is defined to be in the water softening mode. Specifically, assuming that the control device 10 selects a target water softening device among the N water softening devices 20 to perform a water softening operation as the 1 st water softening device, the 1 st water softening device enters a water softening mode, under the control of the control device 10, tap water may enter the 1 st water softening device through the raw water pipe 40, resin contained in the resin tank of the 1 st water softening device may reduce hardness of the tap water, and finally the 1 st water softening device supplies softened water to a user through the water outlet pipe 50 for use.

If the user inputs a regeneration instruction, the control device 10 selects a target water diversion device in which the resin is saturated or is close to the saturated state to perform a regeneration operation, or the control device 10 detects that there is a water diversion device in which the resin is saturated and performs a regeneration operation using the water diversion device as the target water diversion device. Specifically, the control device 10 detects the output water quality of the N water softening devices 20, determines the water softening device with the highest water hardness as the target water softening device, for example, the target water softening device is the 1 st water softening device, then the 1 st water softening device enters the regeneration mode, under the control of the control device 10, the saline solution in the regeneration tank 30 enters the 1 st water softening device, the 1 st water softening device utilizes the saline solution to regenerate the resin to recover the softening capability, until the resin softening capability meets the requirements of the water softening function, and controls the 1 st water softening device to switch to the soft water mode.

The control device 10 can detect whether there is a water diversion device in which the resin is saturated or nearly saturated when the i-th water softening device is in the soft water mode. If there is a situation where the j-th water softening device is saturated or nearly saturated with resin, the j-th water softening device may be controlled to communicate with the regeneration tank 30 to enter the regeneration mode when the i-th water softening device is in the soft water mode, so as to soften and regenerate the resin of the j-th water softening device until the resin softening capacity satisfies the requirement of the soft water function, and then the j-th water softening device may perform the soft water operation.

In the embodiment of the invention, a plurality of water softening devices are arranged, so that the water softening operation can be replaced and executed, and the problem that the water softening equipment cannot provide soft water for users in time when being regenerated due to only one water softening device is solved; when ith water softening plant is in the soft water mode, can also the controlling means control jth water softening plant intercommunication regeneration jar in order to get into regeneration mode, make jth water softening plant's resin soften regeneration, it is required until the resin softening ability satisfies the soft water function, the executable soft water operation of jth water softening plant then, need not additionally to reserve regeneration time, the problem that each water softening plant regeneration simultaneously can't in time provide the soft water for the user can not appear, can realize that any time provides the soft water for the user based on this water softening plant, satisfy the demand that the user used the soft water at any time. According to the water softening equipment provided by the embodiment of the invention, the control device can automatically switch the water way, so that the purpose of continuously supplying soft water for a user is realized.

Referring to fig. 2, there is shown a schematic view of another water softening apparatus according to an embodiment of the present invention. In this embodiment, the first input end of the optional water softening device 20 is connected to the raw water pipe 40 through a first switch, the first output end of the water softening device 20 is connected to the water outlet pipe 50 through a second switch, the second input end of the water softening device 20 is connected to the regeneration tank 30 through a third switch, and the second output end of the water softening device 20 is connected to the sewage pipe 60 through a fourth switch; the control terminal of the first switch, the control terminal of the second switch, the control terminal of the third switch and the control terminal of the fourth switch are respectively connected with the control device 10. The same reference numerals are used for the same structures as those of the above-described embodiment, and the control device 10 is electrically connected to each device of the water softening apparatus which needs to be electrically controlled, and the control device and the connection relationship thereof are not shown in the drawings.

Exemplarily, N =2. The first input end of the 1 st water softening device is connected to the raw water pipe 40 through a first switch K11, the first output end is connected to the water outlet pipe 50 through a second switch K21, the second input end is connected to the regeneration tank 30 through a third switch K31, and the second output end is connected to the sewage pipe 60 through a fourth switch K41. The 2 nd water softening device has a first input end connected to the raw water pipe 40 through a first switch K12, a first output end connected to the water outlet pipe 50 through a second switch K22, a second input end connected to the regeneration tank 30 through a third switch K32, and a second output end connected to the sewage pipe 60 through a fourth switch K42. It is understood that the second outputs of the 1 st to N-th water softening devices may be connected to the same or different sewer pipes 60, and the sewer pipes 60 are used to discharge wastewater generated during regeneration or softening of the water softening device 20.

Take the example that the 1 st water softening device is in the soft water mode and the 2 nd water softening device enters the regeneration mode. The control device 10 controls the first switch K11 and the second switch K21 to be opened, and the third switch K31 to be closed, so that the 1 st water softening device provides the softening water for the user, and the salt solution in the regeneration tank 30 is prevented from entering the 1 st water softening device; meanwhile, the control device 10 controls the first switch K12 and the third switch K32 to be turned on, and the second switch K22 to be turned off, so that the 2 nd water softening device sucks the saline solution of the regeneration tank 30 through the venturi effect, and the saline solution washes the resin to reduce the saturation of the resin, so that the softening capacity of the resin is restored, and the regeneration sewage of the 2 nd water softening device is also prevented from entering the water outlet pipe 50.

It can be understood that after the resin of the 2 nd water softening device is restored to the softening capacity capable of generating soft water according to the user's requirement, the control device 10 can control the first switch K12, the second switch K22 and the third switch K32 to be turned off, so that the 2 nd water softening device is not operated to sleep, and the power consumption is reduced. The control device 10 controls the fourth switches K41 and K42 to be turned on simultaneously or in a time-sharing manner, so that the 1 st water softening device discharges softened wastewater and the 2 nd water softening device discharges regenerated wastewater, and the time for discharging sewage is set by a user or automatically controlled by a preset program of the control device, which is not particularly limited.

Referring to fig. 3, there is shown a schematic view of another water softening plant according to an embodiment of the present invention. In this embodiment, a water quality monitoring unit is disposed between the first output end of the optional water softening device 20 and the second switch, and the water quality monitoring unit collects water quality parameters of water output by the water softening device 20; the control device 10 is electrically connected to the water quality monitoring unit and is used for controlling the third switch of the jth water softening device to be opened and the second switch to be closed to enter the regeneration mode when the water quality parameter of the jth water softening device does not meet the water quality condition of the soft water. The same reference numerals are used for the same structures as those of the above-described embodiment in this embodiment, and the control device 10 is electrically connected to each device requiring electrical control in the water softening apparatus, and the control device and the connection relationship thereof are not shown in the drawings. One water quality monitoring unit corresponds to one water softening device.

Exemplarily, N =2. A water quality monitoring unit 21 is arranged between the first output end of the 1 st water softening device and the second switch K21, and the water quality monitoring unit 21 acquires water quality parameters of the water output by the 1 st water softening device; the control device 10 is electrically connected to the water quality monitoring unit 21. A water quality monitoring unit 22 is arranged between the first output end of the 2 nd water softening device and the second switch K22, and the water quality monitoring unit 22 acquires water quality parameters of the water output by the 2 nd water softening device; the control device 10 is electrically connected to the water quality monitoring unit 22. In other embodiments, the water quality monitoring unit corresponding to the i-th water softening device can be arranged between the second switch of the i-th water softening device and the water outlet pipe.

The control device 10 is electrically connected with each water quality monitoring unit, the water quality monitoring units can be used for detecting and obtaining water quality parameters of the softened soft water devices corresponding to the water quality monitoring units, the water quality parameters at least comprise the hardness of water, and the soft water quality conditions prestored in the control device 10 comprise a preset water hardness range. The control device 10 can obtain the water hardness after softening of each water softening device. Suppose that the water hardness after the softening of the jth water softening plant exceeds the preset water hardness range, the description shows that the resin of the jth water softening plant is saturated or tends to be saturated, the quality of the softened water is poor, the resin of the jth water softening plant can be regenerated in time, and the condition that the water softening operation cannot be executed due to the simultaneous regeneration of a plurality of water softening plants is avoided. If the water hardness of each water softening device after softening is within the preset water hardness range, the water softening devices do not need to be regenerated, and the situation that the water softening devices are frequently regenerated is avoided.

It can be understood that, when the j-th water softening device is regenerated, the control device 10 controls the first and third switches of the j-th water softening device to be turned on and the second switch to be turned off for regeneration.

The selectable control device comprises a counting unit, and the counting unit is used for counting the opening times of each second switch according to the control information of the control device; the control device is used for controlling the third switch of the jth water softening device to be switched on and the second switch to be switched off to enter the regeneration mode when the switching-on times of the second switch of the jth water softening device exceed the first time threshold.

The control device controls the work of each electric device. For example, the control device controls the switches to be turned on or off, and the second switch of the water softening device is controlled to be turned on, which indicates that the water softening device is performing the water softening operation. The counting unit of the control device may count the number of times the second switch of each water softening device is turned on according to the control information of the control device.

The control device is pre-stored with a first time threshold value, and tests show that if the opening times of the second switch of the water softening device is greater than the first time threshold value, the softened water quality of the water softening device is poor and regeneration is needed. The control device obtains the opening times of each second switch counted by the counting unit, determines the water softening device of which the opening times of the second switch is greater than the first time threshold value as a regenerable water softening device, and controls the regeneration of the corresponding water softening device. Realizes the regeneration of the automatic control water softening device and improves the regeneration efficiency and instantaneity.

The selectable control device comprises a timing unit, and the timing unit is used for counting the starting duration of each second switch according to the control information of the control device; the control device is used for controlling the third switch of the jth water softening device to be opened and the second switch to be closed so as to enter the regeneration mode when the opening duration of the second switch of the jth water softening device exceeds a first time threshold.

The control device controls the work of each electric device. For example, the control device controls the switches to be turned on or off, and the second switch of the water softening device is controlled to be turned on, which indicates that the water softening device is performing the water softening operation. The timing unit in the control device may count the turn-on time period of the second switch of each water softening device according to the control information of the control device.

The first time threshold value is prestored in the control device, and the test shows that if the opening time of the second switch of the water softening device is longer than the first time threshold value, the softened water quality of the water softening device is poor at the moment and needs to be regenerated. The control device obtains the starting duration of each second switch counted by the timing unit, determines the water softening device with the starting duration of the second switch larger than the first time threshold value as a reproducible water softening device, and controls the regeneration of the corresponding water softening device. Realizes the regeneration of the automatic control water softening device and improves the regeneration efficiency and instantaneity.

Referring to fig. 4, there is shown a schematic view of another water softening apparatus according to an embodiment of the present invention. In this embodiment, the input end of the optional regeneration tank 30 is connected to the water outlet pipe 50 through a fifth switch K5; the regeneration tank 30 comprises a liquid level meter 31, and the liquid level meter 31 collects water level parameters of the regeneration tank 30; the control device 10 is electrically connected to the liquid level meter 31, and is configured to control the fifth switch K5 to be turned on when the water level parameter of the regeneration tank 30 is lower than a first water level height, and control the fifth switch K5 to be turned off when the water level parameter of the regeneration tank 30 is higher than a second water level height, where the first water level height is smaller than the second water level height. The same reference numerals are used for the same structures as those of the above-described embodiment in this embodiment, and the control device 10 is electrically connected to each device requiring electrical control in the water softening apparatus, and the control device and the connection relationship thereof are not shown in the drawings.

An optional regeneration tank 30 is a saline solution and a resin tank is provided in the water softener 20. When the water softener 20 is regenerated, the salt solution washes the resin in the resin tank to improve the resin softening capacity. The salt solution is generated by adding salt into water, so when the water level of the solution in the regeneration tank 30 is too low, water needs to be supplemented in time to ensure that the regeneration tank 30 has sufficient salt solution.

Based on this, the control device 10 is pre-stored with a first water level height and a second water level height greater than the first water level height. Tests show that if the water level in the regeneration tank 30 is lower than the first water level, the salt solution in the regeneration tank 30 cannot meet the regeneration requirement of the water softener 20, and water needs to be supplemented; if the water level in the regeneration tank 30 is higher than the second water level, the salt solution in the regeneration tank 30 can fully satisfy the regeneration requirement of the water softener 20 without water supplement.

Thereby, the control device 10 obtains the water level parameter of the regeneration tank 30 through the liquid level meter 31. If the control device 10 detects that the water level of the regeneration tank 30 is lower than the first water level, the fifth switch K5 is controlled to be turned on, and then the water in the water outlet pipe 50 is filled into the regeneration tank 30, so that the water supply to the regeneration tank 30 can be automatically controlled. If the control device 10 detects that the water level of the regeneration tank 30 is higher than the second water level, the fifth switch K5 is controlled to be closed, so that the water in the water outlet pipe 50 is prevented from being filled into the regeneration tank 30, and the solution in the regeneration tank 30 is prevented from overflowing. The automatic control of the solution water replenishing in the regeneration tank is realized, the sufficient salt solution in the regeneration tank is ensured, and the regeneration requirement and instantaneity at any moment are met.

Referring to fig. 5, there is shown a schematic view of still another water softening apparatus according to an embodiment of the present invention. In the present embodiment, referring to fig. 4 and 5, the optional regeneration tank 30 includes a concentration detector 32, and the concentration detector 32 collects solution concentration parameters of the regeneration tank 30; the water softening equipment further comprises an alarm 11, and the control device 10 is respectively electrically connected with the alarm 11 and the concentration detector 32 and is used for triggering the alarm 11 to give an alarm when the solution concentration parameter of the regeneration tank 30 does not meet the regeneration solution condition. The same reference numerals are used for the same structures as those of the above-described embodiment, and the control device 10 is electrically connected to each device requiring electrical control in the water softening apparatus.

An optional regeneration tank 30 is a saline solution and a resin tank is provided in the water softener 20. When the concentration of the salt solution in the regeneration tank 30 is too low, the effect of softening the resin may be poor, the efficiency is low, and at this time, the salt needs to be supplemented in time to ensure that the salt solution with qualified concentration exists in the regeneration tank 30.

Based on this, the control device 10 is pre-stored with regeneration solution conditions including a salt solution concentration threshold. Tests show that if the concentration of the salt solution in the regeneration tank 30 is lower than the threshold value of the salt solution concentration, the salt solution in the regeneration tank 30 cannot meet the regeneration requirement of the water softener 20, and salt needs to be supplemented. Therefore, the control device 10 obtains the solution concentration parameter of the regeneration tank 30 through the concentration detector 32, and if the control device 10 detects that the salt solution concentration of the regeneration tank 30 is lower than the salt solution concentration threshold, the alarm 11 is triggered to give an alarm to remind a user of adding salt.

Alternative regeneration solution conditions also include salt solution concentration ranges. Tests show that if the concentration of the salt solution in the regeneration tank 30 is lower than the lower limit of the salt solution concentration range, the salt solution in the regeneration tank 30 cannot meet the regeneration requirement of the water softener 20, and salt needs to be supplemented. If the concentration of the salt solution in the regeneration tank 30 is higher than the upper limit of the salt solution concentration range, the salt solution in the regeneration tank 30 can fully meet the regeneration requirement of the water softener 20, and salt does not need to be supplemented. Thereby, the control device 10 obtains the solution concentration parameter of the regeneration tank 30 by the concentration detector 32. If the control device 10 detects that the concentration of the saline solution in the regeneration tank 30 is lower than the lower limit value of the saline solution concentration range, the alarm 11 is triggered to give an alarm to remind a user of adding salt; if the control device 10 detects that the concentration of the saline solution in the regeneration tank 30 is higher than the upper limit value of the concentration range of the saline solution, the alarm 11 is triggered to give an alarm, and a user is reminded to stop adding the saline solution. The salt supplementing device has the advantages that the salt supplementing device automatically reminds a user of salt supplementing, ensures that the concentration of the salt solution in the regeneration tank is proper, and meets the regeneration requirement and instantaneity at any moment.

In other embodiments, the optional water softening equipment further comprises a salt box, salt is stored in the salt box, and a sixth switch is arranged between the salt box and the regeneration tank. The control device is used for triggering the sixth switch to be opened when the solution concentration parameter of the regeneration tank does not meet the regeneration solution condition, and salt in the salt box is filled into the regeneration tank; and the sixth switch is triggered to be closed when the solution concentration parameter of the regeneration tank meets the regeneration solution condition. The automatic control is realized, the salt is supplemented into the regeneration tank, the salt solution in the regeneration tank is ensured to be appropriate in concentration, and the regeneration requirement and instantaneity at any time are met.

Referring to fig. 6, there is shown a schematic view of another water softening apparatus according to an embodiment of the present invention. In this embodiment, the optional water softening apparatus comprises: a first regeneration tank 310 and a second regeneration tank 320; the second input end of the water softener 20 is respectively connected with the two regeneration tanks 30; the control device 10 is used for controlling the water softening device 20 to communicate with the first regeneration tank 310 or the second regeneration tank 320 when in the regeneration mode.

Exemplarily, N =2. The second input end of the 1 st water softening device is connected with the first and

second regeneration tanks

310 and 320, respectively. The second input end of the 2 nd water softening device is connected with the first and

second regeneration tanks

310 and 320, respectively.

Assuming that the 1 st water softening device is in the regeneration mode, if the saline solution level of the first regeneration tank 310 is too low or the saline solution concentration does not satisfy the regeneration solution condition, the control device 10 controls the 1 st water softening device to communicate with the second regeneration tank 320 for the regeneration operation, at which time the first regeneration tank 310 may be replenished with the saline solution until it satisfies the regeneration solution condition. The regeneration tanks can be alternately used, so that the regeneration tanks with saline solution not meeting the regeneration solution condition can be supplemented with the saline solution conveniently, and the regeneration requirement and instantaneity at any moment can be met.

It can be understood that when the number of the water softening devices in the water softening plant is large, three or more regeneration tanks can be further included, and more than two regeneration tanks can be connected to the second input end of one water softening device.

For water softening plants, the optional switch may be opened or closed by a flat surface, plunger, paddle, or the like, or by a combination of one or more of these.

The water softening equipment provided by the embodiment of the invention can realize continuous supply of soft water for users, when one water softening device is regenerated, the control device can automatically switch the water path to enable the other water softening device to soften water, and time can be provided for users to purchase salt and regenerate the dissolved salt by switching at least two water softening devices.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A water softening apparatus, comprising: a control device, 1 st to Nth water softening devices and at least one regeneration tank;

the control device is used for controlling the jth water softening device to be communicated with the regeneration tank to enter the regeneration mode when the ith water softening device is in the soft water mode, the value of N is a positive integer larger than or equal to 2, i is not less than 1 and not more than N, j is not less than 1 and not more than N, and i is not equal to j.

2. The water softening apparatus according to claim 1, wherein a first input of the water softening device is connected to the raw water pipe through a first switch, a first output of the water softening device is connected to the water outlet pipe through a second switch, a second input of the water softening device is connected to the regeneration tank through a third switch, and a second output of the water softening device is connected to a sewage pipe through a fourth switch;

3. The water softening apparatus according to claim 2, wherein a water quality monitoring unit is arranged between the first output end of the water softening device and the second switch, and the water quality monitoring unit collects water quality parameters of water output by the water softening device;

4. The water softening apparatus according to claim 2, wherein the control device comprises a counting unit for counting the number of times each of the second switches is turned on according to control information of the control device;

the control device is used for controlling the third switch of the j-th water softening device to be switched on and the second switch to be switched off to enter the regeneration mode when the switching-on times of the second switch of the j-th water softening device exceed a first time threshold value.

5. The water softening apparatus according to claim 2, wherein the control device comprises a timing unit for counting the on-time of each second switch according to the control information of the control device;

6. The water softening apparatus according to claim 1, wherein the input end of the regeneration tank is connected to the water outlet pipe through a fifth switch;

the regeneration tank comprises a liquid level meter, and the liquid level meter is used for collecting water level parameters of the regeneration tank;

7. The water softening apparatus according to claim 1, wherein the regeneration tank comprises a concentration detector that collects solution concentration parameters of the regeneration tank;

8. The water softening apparatus according to claim 1, comprising: a first regeneration tank and a second regeneration tank;

9. The water softening apparatus according to claim 1, wherein the water softening device comprises a resin tank; the regeneration tank includes a salt solution.

10. The water softening apparatus according to claim 1, wherein the third output of the water softening device is connected to the regeneration tank through a filter.