CN109133266B

CN109133266B - Double-tank soft water control valve and water treatment system

Info

Publication number: CN109133266B
Application number: CN201810934213.XA
Authority: CN
Inventors: 薛永
Original assignee: Nanjing Fobrite Environmental Technology Co Ltd
Current assignee: Nanjing Fobrite Environmental Technology Co Ltd
Priority date: 2018-08-16
Filing date: 2018-08-16
Publication date: 2023-10-13
Anticipated expiration: 2038-08-16
Also published as: WO2020034238A1; CN109133266A

Abstract

The invention discloses a double-tank soft water control valve and a water treatment system, which comprise a main valve component and an auxiliary valve component, wherein the main valve component is used for controlling the switching of the working and regeneration states of double resin tanks, and the auxiliary valve component is used for controlling the switching of waterways during resin regeneration in the resin tanks in the regeneration states. The invention can realize the continuous soft water supply requirement of families and industries, compared with the conventional double-tank water treatment system, reduces one soft water control valve and a soft water valve controller, has simpler whole control and saves more electricity, and reduces the assembly and use cost of the soft water treatment system.

Description

Double-tank soft water control valve and water treatment system

Technical Field

The invention relates to a multifunctional control valve for a double-tank water supply system, in particular to a multifunctional soft water control valve for continuous water supply of a soft water treatment system and a one-use one-standby soft water treatment system containing the multifunctional control valve.

Background

Common forms of demineralized water treatment systems today are: single tank water supply, double exchange tank one-by-one continuous water supply, etc. The softened water treatment systems can produce soft water again after the resin in the resin tank is regenerated after the resin failure water hardness of the exchange tank reaches the upper limit value.

For industrial water, to ensure that the hardness of the boiler or product water meets the standards, the water treatment system must be able to continuously provide soft water, so that a double tank, one-by-one or multiple exchange tanks are typically employed. For general household users, a single-tank water supply system is mostly used for reducing the use cost. When the water treatment system regenerates the resin in the resin tank, the water treatment system can not completely meet the requirements of all users on uninterrupted soft water. The patent CN 106241956A provides a solution that two soft water control valves are connected in parallel in a water treatment system and electromagnetic valves are connected in series in respective loops, and the opening and closing of the electromagnetic valves and the soft water valves are controlled through software programs, so that one soft water control valve is always in a working state, and the uninterrupted water production of soft water of the system is ensured; on the basis of meeting the water yield, the effectiveness of the resin is always ensured. The whole system is complex, and 2 soft water control valves are needed.

Disclosure of Invention

The invention aims to: in order to overcome the defects in the prior art, the invention provides a double-tank soft water control valve and a water treatment system, which are used for solving the problem that 2 soft water valves are needed in the existing one-to-one double-tank soft water treatment system, and reducing the system assembly and use cost.

The technical scheme is as follows: in order to achieve the above purpose, the invention adopts the following technical scheme:

the double-tank soft water control valve comprises a main valve component and an auxiliary valve component, wherein the main valve component is used for controlling the switching between the working state and the regeneration state of the double resin tanks, and the auxiliary valve component is used for controlling the switching of waterways during the regeneration of the resin in the resin tanks in the regeneration state.

Preferably: the main valve component comprises a main valve shell, a main valve piston, a main valve grid group and a partition plate, wherein:

the partition plate is arranged in the main valve housing and divides the inner space of the main valve housing into two parts, namely a first main valve space and a second main valve space.

The main valve grid group comprises a first main valve grid, a second main valve grid, a third main valve grid, a fourth main valve grid, a fifth main valve grid, a sixth main valve grid, a seventh main valve grid and an eighth main valve grid. The first main valve grid, the second main valve grid, the third main valve grid and the fourth main valve grid are sequentially arranged in the first main valve space, and the fifth main valve grid, the sixth main valve grid, the seventh main valve grid and the eighth main valve grid are sequentially arranged in the second main valve space.

The main valve shell is provided with a main valve water outlet Z1, a main valve water inlet Z2, a main valve hard water outlet Z3, a first resin tank connecting port A1, a first resin tank connecting port B2, a second resin tank connecting port B1, a second resin tank connecting port B2, a hard water inlet Y and a soft water outlet R, wherein the second resin tank connecting port B1 is positioned between a third main valve grid and a fourth main valve grid, the main valve hard water outlet Z3 is positioned between the second main valve grid and the third main valve grid, the first resin tank connecting port A1 is positioned between the first main valve grid and the second main valve grid, the main valve water outlet Z1 is positioned between the first main valve grid and the side wall of the main valve shell, and the hard water inlet Y is positioned between the second main valve grid and the third main valve grid. The main valve water inlet Z2 is positioned between the fifth main valve grid and the partition plate, the first resin tank connecting port II A2 is positioned between the sixth main valve grid and the seventh main valve grid, the second resin tank connecting port II B2 is positioned between the seventh main valve grid and the eighth main valve grid, and the soft water outlet R is positioned between the sixth main valve grid and the seventh main valve grid.

The main valve piston comprises a first main piston body, a second main piston body and a connecting rod, wherein the first main piston body is arranged in a first main valve space, the second main piston body is arranged in a second main valve space, one end of the connecting rod is fixedly connected with the first main piston body, and the other end of the connecting rod penetrates through the partition plate to be fixedly connected with the second main piston body. The main piston body is provided with a first main valve annular opening in the circumferential direction and a first main valve piston inner cavity channel in the axial direction. The second main valve annular opening is arranged on the two circumferences of the main piston body, and the second main valve piston inner cavity channel is axially arranged. The main valve piston, the main valve grid group and the main valve shell are sequentially arranged from inside to outside in the radial direction.

The main valve piston is positioned at a first limit position, the hard water inlet Y, the first resin tank connecting port A1 and the main valve hard water outlet Z3 are communicated, the second resin tank connecting port B1 and the main valve outlet Z1 are communicated, the main valve water inlet Z2 and the second resin tank connecting port B2 are communicated, and the first resin tank connecting port A2 and the soft water outlet R are communicated.

The main valve piston is positioned at a second limit position, the hard water inlet Y, the first resin tank connecting port B1 and the main valve hard water outlet Z3 are communicated, the first resin tank connecting port A1 and the main valve outlet Z1 are communicated, the second resin tank connecting port B2 and the soft water outlet R are communicated, and the main valve inlet Z2 and the first resin tank connecting port A2 are communicated.

Preferably: the auxiliary valve component comprises an auxiliary valve shell, an auxiliary valve piston, an auxiliary valve grid set, a salt absorption grid set, a salt passage pipe and a regeneration waterway, wherein:

the auxiliary valve grating group comprises a first auxiliary valve grating, a second auxiliary valve grating, a third auxiliary valve grating, a fourth auxiliary valve grating and a fifth auxiliary valve grating, and the salt absorption grating group comprises a first salt absorption grating and a second salt absorption grating. The first auxiliary valve grid, the second auxiliary valve grid, the third auxiliary valve grid, the fourth auxiliary valve grid, the fifth auxiliary valve grid, the first salt absorbing grid and the second salt absorbing grid are sequentially arranged in the auxiliary valve casing.

The auxiliary valve comprises an auxiliary valve shell, and is characterized in that an auxiliary valve water inlet F1, an auxiliary valve water outlet F2, an auxiliary valve hard water inlet F3, a sewage drain P and a salt absorption port H are arranged on the auxiliary valve shell, the auxiliary valve water inlet F1 is positioned between a second auxiliary valve grid and a third auxiliary valve grid, the auxiliary valve water inlet F1 is positioned between the second auxiliary valve grid and the third auxiliary valve grid, the auxiliary valve hard water inlet F3 is positioned between the third auxiliary valve grid and a fourth auxiliary valve grid, the auxiliary valve water outlet F2 is positioned between the fourth auxiliary valve grid and a fifth auxiliary valve grid, the sewage drain P is positioned between a first auxiliary valve grid and a second auxiliary valve grid, the salt absorption port H is positioned between the first salt absorption grid and the second salt absorption grid, and a space between the second salt absorption grid and the side wall of the auxiliary valve shell forms a salt absorption area.

One end of the regeneration waterway is connected to the auxiliary valve housing between the third auxiliary valve grating and the fourth auxiliary valve grating, the other end of the regeneration waterway is connected to the auxiliary valve housing between the fourth auxiliary valve grating and the fifth auxiliary valve grating, one end of the salt passage pipe is connected to the regeneration waterway, and the other end of the salt passage pipe is connected to the auxiliary valve housing corresponding to the salt suction area.

The auxiliary valve piston comprises an auxiliary piston body and a salt absorbing plug body, and the auxiliary piston body and the salt absorbing plug body are mutually fixedly connected. The auxiliary piston body is provided with a first auxiliary valve annular opening and a second auxiliary valve annular opening in the circumferential direction, and an auxiliary valve piston inner cavity channel in the circumferential direction. The salt absorbing plug body is circumferentially provided with a first salt absorbing annular opening and a second salt absorbing annular opening. The auxiliary piston body, the auxiliary valve grid group and the auxiliary valve shell are sequentially arranged from inside to outside in the radial direction, and the salt suction plug body, the salt suction grid group and the auxiliary valve shell are sequentially arranged from inside to outside in the radial direction.

The auxiliary valve piston is positioned at a first limit position, the auxiliary valve water inlet F1 is communicated with the sewage outlet P, and the auxiliary valve hard water inlet F3, the auxiliary valve water outlet F2 and the salt absorption port H are communicated. The auxiliary valve piston is positioned at a second limit position, the auxiliary valve water inlet F1 is communicated with the sewage outlet P, and the auxiliary valve hard water inlet F3 is communicated with the auxiliary valve water outlet F2. The auxiliary valve piston is positioned at a third limit position, the auxiliary valve hard water inlet F3, the auxiliary valve water inlet F1, the salt suction port H and the sewage outlet P are communicated, and the auxiliary valve water outlet F2 and the sewage outlet P are communicated. The auxiliary valve piston is positioned at a fourth limit position, the auxiliary valve hard water inlet F3, the auxiliary valve water inlet F1 and the salt absorption port H are communicated, and the auxiliary valve water outlet F2 and the salt absorption port H are communicated. The auxiliary valve piston is positioned at a fifth limit position, and the auxiliary valve hard water inlet F3, the auxiliary valve water inlet F1 and the auxiliary valve water outlet F2 are communicated.

The main valve water outlet Z1 is communicated with the auxiliary valve water inlet F1, the main valve hard water outlet Z3 is communicated with the auxiliary valve hard water inlet F3, and the main valve water inlet Z2 is communicated with the auxiliary valve water outlet F2.

Further: the three-way pipe is characterized by further comprising a three-way pipe, two ports of the three-way pipe are arranged on the regenerated water path, and the other port of the three-way pipe is connected with one end of the salt path pipe.

Further: the device also comprises a main driving motor and an auxiliary driving motor, wherein the main driving motor is used for driving the main valve piston, and the auxiliary driving motor is used for driving the auxiliary valve piston.

A double-tank softened water treatment system adopting the double-tank softened water control valve is used for water treatment control of double resin tanks and comprises a first flowmeter, a first timing circuit, a second flowmeter, a second timing circuit and a soft water valve controller, wherein the double resin tanks are a first resin tank G1 and a second resin tank G2, a first resin tank connecting port A1 is communicated with a first connecting port of the first resin tank G1, the first resin tank connecting port A2 is communicated with a connecting port of the first resin tank G1, the first flowmeter and the first timing circuit are arranged on a communicating pipeline of the first resin tank connecting port A1 and the first connecting port of the first resin tank G1, or the first flowmeter and the first timing circuit are arranged on a communicating pipeline of the first resin tank connecting port A2 and the second connecting port of the first resin tank G1. The first resin tank connecting port B1 is communicated with the first connecting port of the second resin tank G2, and the second resin tank connecting port B2 is communicated with the second connecting port of the second resin tank G2. The second flowmeter and the second timing circuit are arranged on a communicating pipeline of the first connecting port B1 of the second resin tank and the first connecting port of the second resin tank G2, or the second flowmeter and the second timing circuit are arranged on a communicating pipeline of the second connecting port B2 of the second resin tank and the second connecting port of the second resin tank G2. The salt absorbing port H is communicated with the salt box.

The soft water valve controller is respectively communicated with the first flowmeter, the first timing circuit, the second flowmeter, the second timing circuit, the main driving motor and the auxiliary driving motor, and controls the main driving motor according to flow information counted by the first flowmeter and timing information of the first timing circuit so as to switch the waterway of the main valve component, and controls the main driving motor according to flow information counted by the second flowmeter and timing information of the second timing circuit so as to switch the waterway of the auxiliary valve component, and the waterway of the main valve component and the waterway of the auxiliary valve component are switched so as to switch the working and regeneration states of the double-resin tank.

Preferably: and the soft water valve controller judges whether the corresponding resin in the resin tank reaches a failure point according to flow information counted by the first flowmeter and the second flowmeter, and regenerates the resin in the resin tank if the corresponding resin in the resin tank reaches the failure point.

Preferably: the first timing circuit and the second timing circuit are used for timing in seconds.

Compared with the prior art, the invention has the following beneficial effects:

the invention controls the work and regeneration of the two resin tanks through the integral valve, thereby realizing the continuous water supply of the water treatment system. The double-tank soft water control valve consists of a main valve component and an auxiliary valve component. The main valve component and the auxiliary valve component are respectively driven by the main motor and the auxiliary motor. The main valve component is arranged below to control the operation and regeneration state switching of the double resin tanks, and the auxiliary valve component is arranged above the control valve to control the waterway switching during resin regeneration in the regeneration resin tanks. The main valve component and the auxiliary valve component are controlled by the soft water valve controller and are matched with each other to realize the work and regeneration and stop of the resin tank in the double-tank water treatment system. Meanwhile, the soft water control valve is controlled by time and flow, so that the use efficiency of the resin in the resin tank is improved, and the continuous water use requirement in industry and life is met.

Drawings

FIG. 1 is a schematic view of a main valve member

FIG. 2 is a schematic view of a main valve housing and a main valve grid set

FIG. 3 is a schematic diagram of a main valve piston

FIG. 4 is a schematic view of the structure of the sub-valve member

FIG. 5 is a schematic view of the structure of the auxiliary valve housing and the auxiliary valve grille set

FIG. 6 is a schematic diagram of a secondary valve piston structure

FIG. 7 is a schematic diagram of counter-flow salt absorption of a primary valve piston and a secondary valve piston in a primary valve piston operating position

FIG. 8 is a schematic diagram of a primary valve piston operating position and a secondary valve piston backwash

FIG. 9 is a schematic diagram of a primary valve piston operating position and a secondary valve piston quick wash

FIG. 10 is a schematic diagram of the water level injected into a primary valve piston in a primary valve piston operating position

FIG. 11 is a schematic diagram of a primary valve piston operating position and a secondary valve piston waiting position

FIG. 12 is a schematic diagram of reverse flow salt absorption of a main valve piston in a working position

FIG. 13 is a schematic diagram of a main valve piston working position secondary valve piston backwash

FIG. 14 is a schematic diagram of a main valve piston operating position secondary valve piston quick wash

FIG. 15 is a schematic diagram of the water level injected by the main valve piston at the working position of the main valve piston

FIG. 16 is a schematic diagram of a main valve piston operating position and a secondary valve piston waiting position

Detailed Description

The present application is further illustrated in the accompanying drawings and detailed description which are to be understood as being merely illustrative of the application and not limiting of its scope, and various equivalent modifications to the application will fall within the scope of the application as defined in the appended claims after reading the application.

A double-tank soft water control valve comprises a main valve component 1 and an auxiliary valve component 2, wherein the main valve component 1 is arranged below and controls the switching of the working and regeneration states of a double-resin tank, and the auxiliary valve component 2 is arranged above and controls the switching of waterways for each working step during the regeneration of the resin in the regeneration resin tank.

As shown in fig. 1-3, the main valve part 1 comprises a main valve housing 11, a main valve piston 12, a main valve grid set 13, a diaphragm 14, wherein:

as shown in fig. 2, the partition 14 is disposed in the main valve housing 11 to divide the inner space of the main valve housing 11 into two parts, i.e., a first main valve space and a second main valve space.

The main valve grid group 13 comprises a first main valve grid, a second main valve grid, a third main valve grid, a fourth main valve grid, a fifth main valve grid, a sixth main valve grid, a seventh main valve grid and an eighth main valve grid. The first main valve grid, the second main valve grid, the third main valve grid and the fourth main valve grid are sequentially arranged in the first main valve space, and the fifth main valve grid, the sixth main valve grid, the seventh main valve grid and the eighth main valve grid are sequentially arranged in the second main valve space.

The main valve shell 11 is provided with a main valve water outlet Z1, a main valve water inlet Z2, a main valve hard water outlet Z3, a first resin tank connecting port A1, a first resin tank connecting port B2, a second resin tank connecting port B1, a second resin tank connecting port B2, a hard water inlet Y and a soft water outlet R, wherein the second resin tank connecting port B1 is positioned between a third main valve grid and a fourth main valve grid, the main valve hard water outlet Z3 is positioned between the second main valve grid and the third main valve grid, the first resin tank connecting port A1 is positioned between the first main valve grid and the second main valve grid, the main valve water outlet Z1 is positioned between the first main valve grid and the side wall of the main valve shell 11, and the hard water inlet Y is positioned between the second main valve grid and the third main valve grid. The main valve water inlet Z2 is positioned between the fifth main valve grid and the partition plate 14, the first resin tank connecting port II A2 is positioned between the sixth main valve grid and the seventh main valve grid, the second resin tank connecting port II B2 is positioned between the seventh main valve grid and the eighth main valve grid, and the soft water outlet R is positioned between the sixth main valve grid and the seventh main valve grid.

As shown in fig. 3, the main valve piston 12 includes a first main piston body 121, a second main piston body 122, and a connecting rod 123, where the first main piston body 121 is disposed in the first main valve space, the second main piston body 122 is disposed in the second main valve space, one end of the connecting rod 123 is fixedly connected with the first main piston body 121, and the other end passes through the partition 14 and is fixedly connected with the second main piston body 122. The primary piston body 121 is circumferentially provided with a primary valve annular port 1211 and axially provided with a primary valve piston bore passageway 1212. The second main piston body 122 is circumferentially provided with a second main valve annular port 1221 and axially provided with a second main valve piston bore passage 1222. The main valve piston 12, the main valve grid group 13 and the main valve shell 11 are sequentially arranged from inside to outside in the radial direction.

The main valve piston 12 is positioned at the first limit position, the hard water inlet Y, the first resin tank connecting port A1 and the main valve hard water outlet Z3 are communicated, the second resin tank connecting port B1 and the main valve outlet Z1 are communicated, the main valve water inlet Z2 and the second resin tank connecting port B2 are communicated, and the first resin tank connecting port A2 and the soft water outlet R are communicated.

The main valve piston 12 is positioned at a second limit position, the hard water inlet Y, the first resin tank connecting port B1 and the main valve hard water outlet Z3 are communicated, the first resin tank connecting port A1 and the main valve outlet Z1 are communicated, the second resin tank connecting port B2 and the soft water outlet R are communicated, and the main valve inlet Z2 and the first resin tank connecting port A2 are communicated.

The resin tank working position and the regeneration position are switched by matching the positions of the main valve piston 12 and the main valve grid group 13.

As shown in fig. 4 to 6, the auxiliary valve part 2 includes an auxiliary valve housing 21, an auxiliary valve piston 22, an auxiliary valve grill set 24, a salt suction grill set 25, a salt passage pipe 27, and a regeneration water passage 28, wherein:

the auxiliary valve grating group 24 comprises a first auxiliary valve grating, a second auxiliary valve grating, a third auxiliary valve grating, a fourth auxiliary valve grating and a fifth auxiliary valve grating, and the salt absorbing grating group 25 comprises a first salt absorbing grating and a second salt absorbing grating. The first auxiliary valve grid, the second auxiliary valve grid, the third auxiliary valve grid, the fourth auxiliary valve grid, the fifth auxiliary valve grid, the first salt absorbing grid and the second salt absorbing grid are sequentially arranged in the auxiliary valve shell 21.

As shown in fig. 5, the auxiliary valve housing 21 is provided with an auxiliary valve water inlet F1, an auxiliary valve water outlet F2, an auxiliary valve hard water inlet F3, a drain P and a salt absorption port H, the auxiliary valve water inlet F1 is located between the second auxiliary valve grille and the third auxiliary valve grille, the auxiliary valve hard water inlet F3 is located between the third auxiliary valve grille and the fourth auxiliary valve grille, the auxiliary valve water outlet F2 is located between the fourth auxiliary valve grille and the fifth auxiliary valve grille, the drain P is located between the first auxiliary valve grille and the second auxiliary valve grille, the salt absorption port H is located between the first salt absorption grille and the second salt absorption grille, and a space between the second salt absorption grille and a side wall of the auxiliary valve housing 21 forms a salt absorption area 26.

One end of the regeneration waterway 28 is connected to the auxiliary valve housing 21 between the third auxiliary valve grid and the fourth auxiliary valve grid, the other end of the regeneration waterway 28 is connected to the auxiliary valve housing 21 between the fourth auxiliary valve grid and the fifth auxiliary valve grid, one end of the salt passage pipe 27 is connected to the regeneration waterway 28, and the other end of the salt passage pipe 27 is connected to the auxiliary valve housing 21 corresponding to the salt suction area 26.

As shown in fig. 6, the secondary valve piston 22 includes a secondary piston body 221 and a salt absorbing plug body 222, and the secondary piston body 221 and the salt absorbing plug body 222 are mutually fixed together. The auxiliary piston body 221 is provided with a first auxiliary valve annular port 2211 and a second auxiliary valve annular port 2212 in the circumferential direction, and is provided with an auxiliary valve piston inner cavity passage 2213 in the circumferential direction. The salt absorbing plug body 222 is circumferentially provided with a first salt absorbing annular opening 2221 and a second salt absorbing annular opening 2222. The secondary piston body 221, the secondary valve grid set 24 and the secondary valve housing 21 are sequentially arranged from inside to outside in the radial direction, and the salt absorbing plug body 222, the salt absorbing grid set 25 and the secondary valve housing 21 are sequentially arranged from inside to outside in the radial direction.

The auxiliary valve piston 22 is positioned at the first limit position, the auxiliary valve water inlet F1 is communicated with the sewage outlet P, and the auxiliary valve hard water inlet F3, the auxiliary valve water outlet F2 and the salt absorption port H are communicated. The auxiliary valve piston 22 is positioned at the second limit position, the auxiliary valve water inlet F1 is communicated with the sewage outlet P, and the auxiliary valve hard water inlet F3 is communicated with the auxiliary valve water outlet F2. The auxiliary valve piston 22 is positioned at the third limit position, the auxiliary valve hard water inlet F3, the auxiliary valve water inlet F1, the salt absorbing port H and the sewage outlet P are communicated, and the auxiliary valve water outlet F2 and the sewage outlet P are communicated. The auxiliary valve piston 22 is positioned at the fourth limit position, the auxiliary valve hard water inlet F3, the auxiliary valve water inlet F1 and the salt absorption port H are communicated, and the auxiliary valve water outlet F2 and the salt absorption port H are communicated. The auxiliary valve piston 22 is in the fifth limit position, and the auxiliary valve hard water inlet F3, the auxiliary valve water inlet F1 and the auxiliary valve water outlet F2 are communicated.

And the device also comprises a three-way pipe 23, wherein two ports of the three-way pipe 23 are arranged on the regeneration waterway 28, and the other port of the three-way pipe 23 is connected with one end of a salt pipeline 27.

The regeneration of the resin in the regeneration site resin tank is realized by the cooperation of the auxiliary valve piston 22, the auxiliary valve grating group 24, the salt absorbing grating group 25, the salt passage 27 and the regeneration water passage 28.

The device also comprises a main driving motor and an auxiliary driving motor, wherein the main driving motor is used for driving the main valve piston 12 to move and stop so as to switch the working and regeneration states of the first resin tank G1 and the second resin tank G2, and the auxiliary driving motor is used for driving the auxiliary valve piston 22 to move and stop so as to realize the countercurrent salt absorption, backwashing, salt absorption, water injection and rest of the regeneration of the resin in the first resin tank G1 and the second resin tank G2.

The soft water valve controller is respectively communicated with the first flowmeter, the first timing circuit, the second flowmeter, the second timing circuit, the main driving motor and the auxiliary driving motor, the soft water valve controller controls the main driving motor according to flow information counted by the first flowmeter and timing information counted by the first timing circuit, and then the water channel of the main valve component 1 is switched, the soft water valve controller controls the main driving motor according to flow information counted by the second flowmeter and timing information counted by the second timing circuit, and then the water channel of the auxiliary valve component 2 is switched, and the work and regeneration state switching of the double resin tank are realized through the switching of the water channels of the main valve component 1 and the auxiliary valve component 2.

And the soft water valve controller judges whether the corresponding resin in the resin tank reaches a failure point according to flow information counted by the first flowmeter and the second flowmeter, and regenerates the resin in the resin tank if the corresponding resin in the resin tank reaches the failure point. The first timing circuit and the second timing circuit can accurately count the time of day, minute and second, and judge the accumulated using time of the resin. The time and flow rate of the exchange resin in the water treatment system are monitored.

The operation and regeneration of the double resin tanks are divided into the first resin tank G1 operation, the second resin tank G2 regeneration and the first resin tank G1 regeneration and the second resin tank G2 operation.

1. Regeneration of first G1 working resin tank and second G2 working resin tank

As shown in fig. 7, in the state of resin tank one G1 working-resin tank two G2 counter-current salt absorption, at this time, the main valve piston 12 is in the first limit position (working position one), the auxiliary valve piston 22 is in the first limit position, i.e., the auxiliary valve piston 22 is in the counter-current salt absorption position, hard water enters from the hard water inlet Y, and is split into two, one path enters the resin tank one G1 through the passage formed by the second main valve grid and the first main valve annular opening 1211, exchanges resin in the resin tank one G1, and enters the main valve component from the first resin tank connection opening two A2 after the softened water exits from the resin tank one G1, enters the household or industrial pipeline from the soft water outlet R through the passage formed by the sixth main valve grid and the second main valve annular opening 1221. The other path passes through the channel formed by the second main valve grid and the first main valve annular opening 1211, the main valve hard water outlet Z3 is discharged, the auxiliary valve hard water inlet F3 is led into the auxiliary valve component, the hard water (reclaimed water) led into the auxiliary valve hard water inlet F3 is led into the reclaimed water channel 28 through the second auxiliary valve annular opening 2212, and flows out of the auxiliary valve water outlet F2 after passing through the reclaimed water channel 28, at the moment, the siphon effect is generated because the salt suction opening H, the salt passage pipe 27 and the reclaimed water channel 28 are communicated, the salt suction opening H generates the siphon effect to suck exchange salt water for resin regeneration from the salt tank, the exchange salt water is led into the reclaimed water channel 28 through the salt suction opening H and the salt passage pipe 27, is led out of the auxiliary valve water outlet F2, is led into the main valve component from the main valve water inlet Z2, is led into the main valve component from the main valve piston inner cavity channel 1222, is led into the reclaimed water channel G2 from the second resin tank B2, the water in the main valve C2 is led out of the main valve C2 from the main valve connecting port B1, and is led into the main valve component 1212 from the auxiliary valve inner cavity F1 through the auxiliary valve piston inner cavity F1, and is led into the auxiliary valve piston P1 through the auxiliary valve inner cavity through the auxiliary valve connecting port F1, and the drain pipeline P is discharged from the auxiliary valve annular opening P1.

As shown in fig. 8, in the resin tank one G1 operation-resin tank two G2 backwash state, the main valve piston 12 is in the first limit position (the first operation position), and the sub valve piston 22 is in the second limit position, i.e., the sub valve piston 22 stays in the backwash position. The water draining time and flow rate of the original resin tank G2 are counted through a timer II and a flowmeter II, after the water in the original resin tank G2 is drained completely, the resin tank G2 is the brine for resin regeneration, a soft water valve controller controls an auxiliary valve driving motor to move an auxiliary valve piston 22 to a backwashing position, at the moment, due to disappearance of pressure difference balance siphonage, water entering an auxiliary valve component from a main valve hard water inlet F3 is discharged from a main valve water outlet Z3, passes through a channel formed by a fourth auxiliary valve grating and a second auxiliary valve annular port 2212, directly enters the main valve water inlet Z2 from the auxiliary valve water outlet F2, passes through a second main valve piston inner cavity channel 1222, enters a regeneration position resin tank G2 central tube from a second resin tank connector B2, exchanges and regenerates the resin from the lower part of the resin tank G2, enters the main valve component from a first main valve piston inner cavity channel 1212 after the mouth of the resin tank G2 is discharged from the mouth of the resin tank G2, enters the auxiliary valve water inlet F1 from the main valve piston inner cavity channel 1212 through the main valve water outlet Z1, passes through the auxiliary valve annular valve grating and the first auxiliary valve annular port 2211, and the drain is discharged from the drain channel P is formed by the auxiliary valve annular port.

As shown in fig. 9, in the resin tank one G1 operation-resin tank two G2 fast wash state, the main valve piston 12 is in the first limit position, and the sub valve piston 22 is in the third limit position, i.e., the sub valve piston 22 is stopped at the fast wash position. The regeneration time and flow of the second resin tank G2 are counted through the second timer and the second flowmeter, after the second resin tank G2 is regenerated, the soft water valve controller controls the auxiliary valve driving motor to move the auxiliary valve piston 22 to the quick washing position, at the moment, water entering the auxiliary valve component from the main valve hard water outlet Z3 passes through a channel formed by the third auxiliary valve grid and the first auxiliary valve annular port 2211, directly enters the main valve component from the main valve water outlet Z1 through the auxiliary valve water inlet F1, passes through the first main valve piston cavity channel 1212, then passes through the second resin tank connecting port B1, enters from the periphery of the opening of the second resin tank G2, positively washes resin from above, discharges saline in the second resin tank G2 from the central opening of the resin tank into the second resin tank connecting port B2, passes through the second piston cavity channel 1222, enters the auxiliary valve water inlet Z2, passes through a channel formed by the fifth auxiliary valve grid and the main valve annular port 2212, passes through the auxiliary valve piston cavity channel 2213, and is discharged from the auxiliary valve piston cavity P to the lower side.

As shown in fig. 10, in the first resin tank G1-second resin tank G2 filling state, the main valve piston 12 is in the first limit position, and the sub-valve piston 22 is in the fourth limit position, i.e., the sub-valve piston 22 stays in the filling position. And the time and flow rate of the quick washing completion of the resin tank G2 are counted through the timer II and the flowmeter II, when the quick washing of the resin tank G2 is completed, the soft water valve controller controls the auxiliary valve driving motor to move the auxiliary valve piston 22 to the water injection position, at the moment, water entering the auxiliary valve part from the auxiliary valve hard water inlet F3 is split into two from the main valve hard water outlet Z3, one path of water is introduced into the salt box from the salt absorption route, salt is dissolved, and the salt box is prepared for next resin regeneration, namely, a channel formed by the auxiliary valve hard water inlet F3, a third auxiliary valve grating and the first auxiliary valve annular opening 2211, a regeneration waterway 28, a channel formed by the fifth auxiliary valve grating and the second auxiliary valve annular opening 2212, a channel formed by the first salt absorption grating and the first salt absorption annular opening 2221 and a salt absorption opening H are sequentially entered into the salt box. The other path of the salt water enters the main valve component through a channel formed by a third auxiliary valve grating and a first auxiliary valve annular port 2211, directly enters the main valve component from a main valve water inlet F1 through a main valve water outlet Z1, enters the salt water tank through a channel formed by a fifth auxiliary valve grating and a second auxiliary valve annular port 2212, sequentially passes through a channel formed by a first salt absorbing grating and a first salt absorbing annular port 2221, and enters a salt absorbing port H through a first main valve piston inner cavity channel 1212, enters the periphery of a port of a second resin tank G2, positively washes resin from above the resin, discharges salt water in the second resin tank G2 from a central port of the resin tank into the second resin tank connecting port B2, enters the auxiliary valve water outlet F2 through a second main valve piston inner cavity channel 1222, and sequentially passes through a channel formed by a fifth auxiliary valve grating and the second auxiliary valve annular port 2212, and a channel formed by the first salt absorbing grating and the first salt absorbing annular port 2221.

As shown in fig. 11, in the first resin tank G1-second resin tank G2 suspended state, the main valve piston 12 is at the first limit position, and the sub-valve piston 22 is at the fifth limit position, i.e., the sub-valve piston 22 is stopped at the waiting position. And the water injection time and flow of the second G2 resin tank are counted through the second timer and the second flowmeter, after the water injection of the second G2 resin tank is completed, all regeneration steps of the second G2 resin tank are completed, the next switching operation is waited, the soft water valve controller controls the auxiliary valve driving motor to move the auxiliary valve piston 22 to a waiting position, at the moment, the pressure of the water inlet and outlet of the second G2 resin tank is balanced, and no water enters and is discharged.

2. First G1 regeneration resin tank and second G2 regeneration resin tank work

As shown in fig. 12, in the state of resin tank two G2 working-resin tank one G1 counter-current salt suction, at this time, the main valve piston 12 is at the second limit position (second working position), the auxiliary valve piston 22 is at the first limit position, i.e. the auxiliary valve piston 22 stays at the counter-current salt suction position, and when the resin tank one G1 working resin tank two G2 is regenerated, before the time or the flow reaches the resin failure, the soft water valve controller drives the main valve piston 12 to move to the second working position, i.e. the main valve piston 12 is at the second limit position, in order to avoid hard water entering the home or industrial pipeline. Hard water enters from the hard water inlet Y, is divided into two parts, one part of the hard water enters into the resin tank G2 from the first resin tank connecting port B1 through a channel formed by the third main valve grating and the first main valve annular opening 1211, exchanges resin in the resin tank G2, and enters into the main valve part from the second resin tank connecting port B2 after the softened water exits from the resin tank G2, and enters into a household or industrial pipeline from the soft water outlet R through a channel formed by the seventh main valve grating and the second main valve annular opening 1221. The other path passes through the channel formed by the third main valve grid and the first main valve annular opening 1211, the main valve hard water outlet Z3 is discharged from the auxiliary valve hard water inlet F3 and enters the auxiliary valve component, at this time, the auxiliary valve piston 22 is in the first limit position (stays at the counter-flow salt suction position), hard water (regenerated water) entering from the auxiliary valve hard water inlet F3 enters the regeneration waterway 28, and flows out from the auxiliary valve water outlet F2 through the regeneration waterway 28, at this time, because of the communication among the salt suction opening H, the salt passage pipe 27 and the regeneration waterway 28, siphon effect is generated, the salt suction opening H sucks exchange brine for resin regeneration from the salt tank because of the pressure difference, the exchange brine enters the regeneration waterway 28 through the salt suction opening H and the salt passage pipe 27, and enters the main valve component from the auxiliary valve water outlet F2, enters the main valve component from the main valve inlet Z2, passes through the fifth main valve grid, and enters the regeneration position resin tank G1 from the first resin tank connecting opening A2, water in the resin tank G1 enters the component from the first main valve connecting opening A1 after the resin tank opening, passes through the auxiliary valve F1, and enters the auxiliary valve annular opening F1, and the drain channel is discharged from the auxiliary valve annular opening P1.

As shown in fig. 13, in the case of the backwashing state of the resin tank G1, the main valve piston 12 is in the second limit position (the second operation position), the auxiliary valve piston 22 is in the second limit position, i.e., the auxiliary valve piston 22 stays in the backwashing position, the drainage time and the flow rate in the original resin tank G1 are counted by the timer G and the flowmeter G, after the water in the original resin tank G1 is completely drained, the main valve is exchanged by the main valve in the resin tank G1, the soft water valve controller controls the auxiliary valve driving motor to move the auxiliary valve piston 22 to the backwashing position, at this time, due to the disappearance of the pressure difference balancing siphon phenomenon, the water entering the auxiliary valve component from the main valve hard water outlet Z3 enters the water inlet F2 of the auxiliary valve through the channel formed by the fourth auxiliary valve grating and the second auxiliary valve annular port 2212, directly enters the water inlet Z2 from the auxiliary valve outlet F2, passes through the fifth grating, enters the central tube of the regeneration position resin tank G1 from the first resin tank connecting port A2, the main valve is exchanged by the main valve, and then enters the auxiliary valve grating P1 from the first connecting port A1, and the auxiliary valve is discharged from the lower side of the filter grating P1 through the second auxiliary valve annular port.

As shown in fig. 14, in the resin tank G2 working-resin tank G1 fast washing state, at this time, the main valve piston 12 is in the second limit position (working position two), the auxiliary valve piston 22 is in the third limit position, i.e. the auxiliary valve piston 22 stays in the fast washing position, the regeneration time and flow rate of the resin tank G1 are counted by the timer a and the flowmeter a pair, after the regeneration of the resin tank G1 is completed, the soft water valve controller controls the auxiliary valve driving motor to move the auxiliary valve piston 22 to the fast washing position, at this time, water entering the auxiliary valve member from the main valve hard water inlet Z3 passes through the passage formed by the third auxiliary valve grating and the first auxiliary valve annular opening 2211, directly enters the main valve member from the auxiliary valve water inlet F1 through the third auxiliary valve grating, passes through the first main valve grating, then enters from the first resin tank connecting opening A1, the resin is positively washed from the resin tank A1 side, brine in the resin tank G1 is discharged from the center opening of the resin tank to the first resin tank A2, the fifth auxiliary valve grating passes through the main valve grating Z2, and the fourth auxiliary valve grating passes through the main valve annular opening 2211, and enters the drain valve 2, and the drain valve 2 passes through the fourth auxiliary valve annular opening 2211, and enters the drain valve 2, and the drain valve passage sequentially passes through the second auxiliary valve grating and the main valve grating and the second auxiliary valve grating, and the drain valve 2 passes through the second auxiliary valve grating and the main valve annular opening 2211.

As shown in fig. 15, in the state of filling the resin tank G2-the resin tank G1, the main valve piston 12 is at the second limit position (the second operation position), the auxiliary valve piston 22 is at the fourth limit position, i.e. the auxiliary valve piston 22 stays at the filling level, the fast washing time and flow rate of the resin tank G1 are counted by the first timer and the first flowmeter, after the fast washing step of the resin tank G1 is completed, the soft water valve controller controls the auxiliary valve driving motor to move the auxiliary valve piston 22 to the filling level, at this time, the water entering the auxiliary valve member from the main valve hard water outlet Z3 is split into two parts, and one part of the water enters the salt tank from the salt absorbing route for salt dissolving, so as to prepare for the next resin regeneration, i.e. the passage formed by the auxiliary valve hard water inlet F3, the regeneration waterway 28, the passage formed by the fifth auxiliary valve grille and the first auxiliary valve annular opening 2212, the passage formed by the first salt absorbing grille and the first salt absorbing annular opening 2221, and the salt tank H. The other path of the salt water enters the main valve component through a channel formed by a third auxiliary valve grating and a first auxiliary valve annular opening 2211, directly enters the main valve component from a main valve water inlet F1 through a main valve water outlet Z1, passes through the first main valve grating, enters the periphery of a mouth of a first resin tank G1 from a first resin tank connection opening A1, positively washes the resin from above, discharges salt water in the first resin tank G1 from a central opening of the resin tank to enter a first resin tank connection opening A2, passes through a fifth main valve grating, enters a main valve water outlet F2 from a main valve water inlet Z2, and sequentially passes through a channel formed by the fifth auxiliary valve grating and a second auxiliary valve annular opening 2212, a channel formed by a first salt absorbing grating and a first salt absorbing annular opening 2221 and a salt absorbing opening H to enter a salt tank.

As shown in fig. 16, when the resin tank G2 is in operation-the resin tank G1 is stopped, the main valve piston 12 is in the second limit position (the second operation position), the auxiliary valve piston 22 is in the fifth limit position, that is, the auxiliary valve piston 22 is in the waiting position, the water filling time and flow rate of the resin tank G1 are counted by the timer G and the flowmeter G, after the water filling of the resin tank G1 is completed, all regeneration steps of the resin tank G1 are completed, the next switching operation is waited, the soft water valve controller controls the auxiliary valve driving motor to move the auxiliary valve piston 22 to the waiting position, and at this time, the water inlet and outlet pressure of the resin tank G1 is balanced, and no water is introduced and discharged.

According to the invention, the main valve component and the auxiliary valve component are used for controlling the operation and regeneration of the double resin tanks, so that the continuous soft water supply requirements of families and industries are realized, compared with a conventional double-tank water treatment system, a soft water control valve and a soft water valve controller are reduced, the whole control is simpler, the electricity is saved, and the assembly and use cost of the soft water treatment system is reduced.

The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.

Claims

1. A double-tank soft water control valve is characterized in that: the device comprises a main valve component (1) and an auxiliary valve component (2), wherein the main valve component (1) is used for controlling the switching between the working state and the regeneration state of the double resin tanks, and the auxiliary valve component (2) is used for controlling the switching of waterways during resin regeneration in the resin tanks in the regeneration state; the main valve component (1) comprises a main valve shell (11), a main valve piston (12), a main valve grid group (13) and a partition plate (14), wherein: the partition board (14) is arranged in the main valve shell (11) and divides the internal space of the main valve shell (11) into two parts, namely a first main valve space and a second main valve space; the main valve grid group (13) comprises a first main valve grid, a second main valve grid, a third main valve grid, a fourth main valve grid, a fifth main valve grid, a sixth main valve grid, a seventh main valve grid and an eighth main valve grid; the first main valve grid, the second main valve grid, the third main valve grid and the fourth main valve grid are sequentially arranged in the first main valve space, and the fifth main valve grid, the sixth main valve grid, the seventh main valve grid and the eighth main valve grid are sequentially arranged in the second main valve space; the main valve shell (11) is provided with a main valve water outlet Z1, a main valve water inlet Z2, a main valve hard water outlet Z3, a first resin tank connecting port A1, a first resin tank connecting port II A2, a second resin tank connecting port B1, a second resin tank connecting port II B2, a hard water inlet Y and a soft water outlet R, wherein the second resin tank connecting port I B1 is positioned between a third main valve grid and a fourth main valve grid, the main valve hard water outlet Z3 is positioned between the second main valve grid and the third main valve grid, the first resin tank connecting port I A1 is positioned between the first main valve grid and the second main valve grid, the main valve water outlet Z1 is positioned between the first main valve grid and the side wall of the main valve shell (11), and the hard water inlet Y is positioned between the second main valve grid and the third main valve grid; the water inlet Z2 of the main valve is positioned between the fifth main valve grid and the partition plate (14), the second A2 of the first resin tank connecting port is positioned between the sixth main valve grid and the seventh main valve grid, the second B2 of the second resin tank connecting port is positioned between the seventh main valve grid and the eighth main valve grid, and the soft water outlet R is positioned between the sixth main valve grid and the seventh main valve grid; the main valve piston (12) comprises a first main piston body (121), a second main piston body (122) and a connecting rod (123), wherein the first main piston body (121) is arranged in the first main valve space, the second main piston body (122) is arranged in the second main valve space, one end of the connecting rod (123) is fixedly connected with the first main piston body (121), and the other end of the connecting rod passes through the partition plate (14) to be fixedly connected with the second main piston body (122); a first main valve annular opening (1211) is arranged on the first main piston body (121) in the circumferential direction, and a first main valve piston inner cavity channel (1212) is arranged on the axial direction; a second main valve annular opening (1221) is arranged on the circumference of the second main piston body (122), and a second main valve piston inner cavity channel (1222) is axially arranged; the main valve piston (12), the main valve grid group (13) and the main valve shell (11) are sequentially arranged from inside to outside in the radial direction; the main valve piston (12) is positioned at a first limit position, the hard water inlet Y is communicated with the first resin tank connecting port A1 and the main valve hard water outlet Z3, the second resin tank connecting port B1 is communicated with the main valve outlet Z1, the main valve water inlet Z2 is communicated with the second resin tank connecting port B2, and the first resin tank connecting port A2 is communicated with the soft water outlet R; the main valve piston (12) is positioned at the second limit position, the hard water inlet Y, the first resin tank connecting port B1 and the main valve hard water outlet Z3 are communicated, the first resin tank connecting port A1 and the main valve outlet Z1 are communicated, the second resin tank connecting port B2 and the soft water outlet R are communicated, and the main valve inlet Z2 and the first resin tank connecting port A2 are communicated.

2. The double tank soft water control valve of claim 1, wherein: the auxiliary valve part (2) comprises an auxiliary valve shell (21), an auxiliary valve piston (22), an auxiliary valve grid group (24), a salt absorption grid group (25), a salt passage pipe (27) and a regeneration waterway (28), wherein: the auxiliary valve grating group (24) comprises a first auxiliary valve grating, a second auxiliary valve grating, a third auxiliary valve grating, a fourth auxiliary valve grating and a fifth auxiliary valve grating, and the salt absorption grating group (25) comprises a first salt absorption grating and a second salt absorption grating; the first auxiliary valve grid, the second auxiliary valve grid, the third auxiliary valve grid, the fourth auxiliary valve grid, the fifth auxiliary valve grid, the first salt absorbing grid and the second salt absorbing grid are sequentially arranged in the auxiliary valve shell (21); the auxiliary valve housing (21) is provided with an auxiliary valve water inlet F1, an auxiliary valve water outlet F2, an auxiliary valve hard water inlet F3, a sewage outlet P and a salt absorption port H, wherein the auxiliary valve water inlet F1 is positioned between a second auxiliary valve grid and a third auxiliary valve grid, the auxiliary valve water inlet F1 is positioned between the second auxiliary valve grid and the third auxiliary valve grid, the auxiliary valve hard water inlet F3 is positioned between the third auxiliary valve grid and a fourth auxiliary valve grid, the auxiliary valve water outlet F2 is positioned between the fourth auxiliary valve grid and a fifth auxiliary valve grid, the sewage outlet P is positioned between a first auxiliary valve grid and a second auxiliary valve grid, the salt absorption port H is positioned between the first salt absorption grid and the second salt absorption grid, and a space between the second salt absorption grid and the side wall of the auxiliary valve housing (21) forms a salt absorption area (26); one end of a regeneration waterway (28) is connected to the auxiliary valve housing (21) between the third auxiliary valve grid and the fourth auxiliary valve grid, the other end of the regeneration waterway (28) is connected to the auxiliary valve housing (21) between the fourth auxiliary valve grid and the fifth auxiliary valve grid, one end of a salt passage pipe (27) is connected to the regeneration waterway (28), and the other end of the salt passage pipe (27) is connected to the auxiliary valve housing (21) corresponding to the salt suction area (26); the auxiliary valve piston (22) comprises an auxiliary piston body (221) and a salt absorbing plug body (222), and the auxiliary piston body (221) and the salt absorbing plug body (222) are mutually fixedly connected; the auxiliary piston body (221) is provided with a first auxiliary valve annular opening (2211) and a second auxiliary valve annular opening (2212) in the circumferential direction, and an auxiliary valve piston inner cavity channel (2213) in the circumferential direction; a first salt absorbing annular opening (2221) and a second salt absorbing annular opening (2222) are formed in the circumferential direction of the salt absorbing plug body (222); the auxiliary piston body (221), the auxiliary valve grid group (24) and the auxiliary valve shell (21) are sequentially arranged from inside to outside in the radial direction, and the salt suction plug body (222), the salt suction grid group (25) and the auxiliary valve shell (21) are sequentially arranged from inside to outside in the radial direction; the auxiliary valve piston (22) is positioned at a first limit position, the auxiliary valve water inlet F1 is communicated with the sewage outlet P, and the auxiliary valve hard water inlet F3, the auxiliary valve water outlet F2 and the salt absorption port H are communicated; the auxiliary valve piston (22) is positioned at a second limit position, the auxiliary valve water inlet F1 is communicated with the sewage outlet P, and the auxiliary valve hard water inlet F3 is communicated with the auxiliary valve water outlet F2; the auxiliary valve piston (22) is positioned at a third limit position, the auxiliary valve hard water inlet F3, the auxiliary valve water inlet F1, the salt suction port H and the sewage outlet P are communicated, and the auxiliary valve water outlet F2 and the sewage outlet P are communicated; the auxiliary valve piston (22) is positioned at a fourth limit position, the auxiliary valve hard water inlet F3, the auxiliary valve water inlet F1 and the salt absorption port H are communicated, and the auxiliary valve water outlet F2 and the salt absorption port H are communicated; the auxiliary valve piston (22) is positioned at a fifth limit position, and the auxiliary valve hard water inlet F3, the auxiliary valve water inlet F1 and the auxiliary valve water outlet F2 are communicated; the main valve water outlet Z1 is communicated with the auxiliary valve water inlet F1, the main valve hard water outlet Z3 is communicated with the auxiliary valve hard water inlet F3, and the main valve water inlet Z2 is communicated with the auxiliary valve water outlet F2.

3. The double tank soft water control valve of claim 2, wherein: the three-way pipe (23) is further included, two ports of the three-way pipe (23) are arranged on the regeneration waterway (28), and the other port of the three-way pipe (23) is connected with one end of the salt pipeline pipe (27).

4. A double tank soft water control valve according to claim 3, wherein: the device also comprises a main driving motor and an auxiliary driving motor, wherein the main driving motor is used for driving the main valve piston (12), and the auxiliary driving motor is used for driving the auxiliary valve piston (22).

5. A water treatment system employing the double tank soft water control valve of claim 4 for water treatment control of double resin tanks, characterized in that: the device comprises a first flowmeter, a first timing circuit, a second flowmeter, a second timing circuit and a soft water valve controller, wherein the two resin tanks are a first resin tank G1 and a second resin tank G2, a first resin tank connecting port A1 is communicated with a first connecting port of the first resin tank G1, a second resin tank connecting port A2 is communicated with a second connecting port of the first resin tank G1, the first flowmeter and the first timing circuit are arranged on a communicating pipeline of the first connecting port A1 of the first resin tank and the first connecting port of the first resin tank G1, or the first flowmeter and the first timing circuit are arranged on a communicating pipeline of the second connecting port A2 of the first resin tank and the second connecting port of the first resin tank G1; the first resin tank connecting port B1 is communicated with the first connecting port of the second resin tank G2, and the second resin tank connecting port B2 is communicated with the second connecting port of the second resin tank G2; the second flowmeter and the second timing circuit are arranged on a communicating pipeline of the first connecting port B1 of the second resin tank and the first connecting port G2 of the second resin tank, or the second flowmeter and the second timing circuit are arranged on a communicating pipeline of the second connecting port B2 of the second resin tank and the second connecting port G2 of the second resin tank; the salt absorbing port H is communicated with a salt box; the soft water valve controller is respectively communicated with the first flowmeter, the first timing circuit, the second flowmeter, the second timing circuit, the main driving motor and the auxiliary driving motor, and controls the main driving motor according to flow information counted by the first flowmeter and timing information counted by the first timing circuit, so that the water channel of the main valve component (1) is switched, the soft water valve controller controls the main driving motor according to flow information counted by the second flowmeter and timing information counted by the second timing circuit, the water channel of the auxiliary valve component (2) is switched, and the working and regeneration state switching of the double-resin tank are realized through the switching of the water channels of the main valve component (1) and the auxiliary valve component (2).

6. The water treatment system of claim 5, wherein: and the soft water valve controller judges whether the corresponding resin in the resin tank reaches a failure point according to flow information counted by the first flowmeter and the second flowmeter, and regenerates the resin in the resin tank if the corresponding resin in the resin tank reaches the failure point.

7. The water treatment system of claim 6, wherein: the first timing circuit and the second timing circuit count in seconds.