CN204981395U - Self -flushing water purifier - Google Patents

Abstract

The utility model relates to a purifier discloses a self -flushing water purifier, including water inlet (1) of establishing ties in proper order, leading filter core (3), booster pump (7) and reverse osmosis membrane filter core (8), reverse osmosis membrane filter core (8) are including filter core pure water delivery port and the concentrated water delivery port of filter core, still include water tank (6), filter core pure water delivery port is connected with first tee bend (52), be equipped with between leading filter core (3) and booster pump (7) second tee bend (51), the water inlet of water tank (6) links to each other with first tee bend (52), the delivery port of water tank (6) is connected with first solenoid valve (42), first solenoid valve (42) link to each other with second tee bend (51), still include pressure sensor (10), check valve (9) and pure water outlet (11). The utility model discloses owing to adopted above technical scheme, the pure water of storing in the water tank can wash the reverse osmosis membrane filter core automatically, guarantees the pureness that the user fetched water.

Description

self flushing water purifier

technical field

The utility model relates to a water purifier, in particular to a water purifier with the function of automatically flushing filter cores.

Background technique

Water purifiers using reverse osmosis membrane filter elements have been widely used in homes or offices. However, when the user takes water again after a long interval of time, there will be concentrated water remaining on the reverse osmosis membrane filter element, so when water is produced again, the concentrated water remaining on the reverse osmosis membrane filter element will mix with the raw water newly entering the filter element, resulting in The TDS value of pure water is high, even close to the TDS value of raw water. Since the mainstream water purifiers on the market no longer use pressure tanks as water storage devices, but directly connect pure water to the user's faucet, the dissolved solid content in the water taken by the user will be high, that is, The water taken is impure.

Contents of the invention

Aiming at the above-mentioned shortcomings, the utility model provides a self-flushing water purifier with the function of automatically flushing the filter element.

In order to solve the above technical problems, the utility model is solved through the following technical solutions:

Self-rinsing water purifier, including water inlet, pre-filter element, booster pump and reverse osmosis membrane filter element in series in series, reverse osmosis membrane filter element includes filter element pure water outlet and filter element concentrated water outlet, also includes water tank, filter element pure water The water outlet is connected with the first three-way, the pre-filter and the booster pump are provided with the second three-way, the water inlet of the water tank is connected with the first three-way, the water outlet of the water tank is connected with the first electromagnetic valve, the first electromagnetic The valve is connected with the second three-way. The pure water produced by the reverse osmosis membrane filter element can be stored in the water tank. When necessary, the water in the water tank enters the reverse osmosis membrane filter element through the booster pump again and cleans the filter element.

Preferably, it also includes a water pressure sensor, a one-way valve connected with the first three-way, and a pure water outlet connected with the one-way valve. The water pressure sensor is used to detect the water pressure between the pure water outlet and the one-way valve, and a second solenoid valve is connected in series between the pre-filter element and the second tee. When the pure water outlet is opened and closed, the water pressure detected by the water pressure sensor is different.

As preferably, it also includes a third three-way, a throttle valve and a third electromagnetic valve, the outlet of the concentrated water of the filter element is connected with an interface of the third three-way, and the throttle valve and the third electromagnetic valve are respectively connected to another connection of the third three-way. The two interfaces are connected. When the third electromagnetic valve is closed, the throttle valve generates back pressure for the reverse osmosis membrane filter element. When the third solenoid valve is opened, the flushed water is directly discharged.

Preferably, it also includes a fourth three-way and a concentrated water outlet, and the fourth three-way is connected with the throttle valve, the third electromagnetic valve and the concentrated water outlet. The waste water generated by the reverse osmosis membrane filter element is discharged through the concentrated water outlet.

Preferably, a fourth solenoid valve is further provided between the water inlet of the water tank and the first tee.

As preferably, a column is also provided in the water tank, and an annular magnetic float is set outside the column, and a reed switch, an upper baffle plate and a lower baffle plate are also fixed on the column, and the magnetic float is located on the upper baffle plate and the lower baffle plate. between. The magnetic float floats up and down with the water level in the water tank, but the magnetic float is limited by the upper baffle and the lower baffle. When the magnetic float floats up, the reed switch is subjected to magnetic force to generate an electrical signal.

Preferably, the water tank is also provided with an air outlet of the water tank, and a filter screen is arranged in the air outlet of the water tank.

Preferably, a pipe is also provided in the water tank, and the water in the water tank flows out of the water tank through the pipe.

Preferably, a controller is also included, and the controller is connected with the second solenoid valve, the first solenoid valve, the fourth solenoid valve, the third solenoid valve, the pressure sensor and the reed switch. The controller can choose single-chip microcomputer.

Because the utility model adopts the above technical scheme, the pure water stored in the water tank can automatically clean the reverse osmosis membrane filter element, so as to ensure the purity of the water taken by the user.

Description of drawings

Fig. 1 is the schematic diagram of the utility model.

Figure 2 is a schematic structural view of the water tank.

The names of the parts indicated by the numbers in the attached drawings are as follows: 1—water inlet, 2—pressure reducing valve, 3—prefilter element, 41—second solenoid valve, 42—first solenoid valve, 43—fourth solenoid valve Valve, 44—the third solenoid valve, 51—the second three way, 52—the first three way, 53—the fourth three way, 54—the third three way, 6—water tank, 61—column, 62—pipe, 63 —water tank outlet, 64—water tank air outlet, 65—filter, 66—water tank inlet, 67—magnetic float, 68—reed switch, 69—lower baffle, 7—booster pump, 8—reverse osmosis membrane filter element, 9—one-way valve, 10—water pressure sensor, 11—pure water outlet, 12—concentrated water outlet, 13—throttle valve.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Example 1

The self-rinsing water purifier, as shown in Figure 1, includes a water inlet 1, a pressure reducing valve 2, a pre-filter 3, a second solenoid valve 41, a second three-way 51, a booster pump 7 and a reverse osmosis membrane connected in series in sequence The filter element 8, the reverse osmosis membrane filter element 8 includes the filter element pure water outlet and the filter element concentrated water outlet, the filter element pure water outlet is connected with the first three-way 52, the first three-way 52 is connected with the one-way valve 9, the one-way valve 9 Connect the pure water outlet 11. The water pressure sensor 10 is used to detect the water pressure between the pure water outlet 11 and the one-way valve 9 and transmit it to the controller.

The controller uses a single-chip microcomputer.

A third three-way 54 , a throttle valve 13 , a fourth three-way 53 and a concentrated water outlet 12 are connected in series at the concentrated water outlet of the filter element, and the third solenoid valve 44 is connected with the third three-way 54 and the fourth three-way 53 .

The water inlet and the water outlet of the water tank 6 are respectively connected with a fourth solenoid valve 43 and a first solenoid valve 42 , the first solenoid valve 42 is connected with the second three-way 51 , and the fourth solenoid valve 43 is connected with the first three-way 52 .

As shown in Figure 2, a column 61 is also provided in the water tank 6, and an annular magnetic float 67 is set on the outside of the column 61, and a reed switch 68, an upper baffle 67 and a lower baffle 69 are also fixed on the column 61. , The magnetic float 67 is located between the upper baffle 67 and the lower baffle 69 .

Water tank 6 is also provided with water tank inlet 66, water tank air outlet 64, and water tank air outlet 64 is provided with filter screen 65. The water tank inlet 66 is the water inlet of the water tank 6 .

Also be provided with pipe 62 in the water tank 6, the water in the water tank 6 flows out water tank 6 from pipe 62, and one end of pipe 62 is water tank outlet 63, i.e. the water outlet of water tank 6.

The controller is connected with the second solenoid valve 41 , the first solenoid valve 42 , the fourth solenoid valve 43 , the third solenoid valve 44 , the pressure sensor 10 and the reed switch 68 at the same time.

Under normal water production conditions, the pure water outlet 11 is opened, and the pure water produced by the reverse osmosis membrane filter element 8 flows out from the pure water outlet through the one-way valve 9, and the water pressure sensor 10 measures that the pure water outlet 11 and the one-way valve at this time The pressure between 9 is low pressure, the controller keeps the second electromagnetic valve 41 in the open state, water enters from the water inlet, and enters the reverse osmosis membrane filter element 8 through the booster pump 7. At this time, the first electromagnetic valve 42 and the third electromagnetic valve Both the valve 44 and the fourth solenoid valve 43 are closed, and the waste water produced in normal water production conditions is discharged through the throttle valve 13 and the concentrated water outlet 12 .

Example 2

If the pure water outlet 11 is closed, because the water cannot flow out, the water pressure between the check valve 9 and the pure water outlet 11 is high pressure, and the water pressure sensor 10 transmits the signal to the controller. The controller controls the fourth electromagnetic valve 43 to open, and the pure water produced by the reverse osmosis membrane filter element 8 flows through the fourth electromagnetic valve 43 and then enters the water tank 6, at this time the magnetic float 67 rises with the water. This process is the water tank inlet working condition.

The controller controls the opening of the first solenoid valve 42 and the third solenoid valve 44, and simultaneously controls the closing of the second solenoid valve 41 and the fourth solenoid valve 43, so that the pure water in the water tank 6 flows through the pipe 62 in the water tank 6, the first Electromagnetic valve 42, second three-way 51, reverse osmosis membrane filter element 8, concentrated water outlet of reverse osmosis membrane filter element 8, the third three-way 54, the third electromagnetic valve 44, the fourth three-way 53 and concentrated water outlet 12 flow out. This process is the working condition of filter element flushing.

In the working condition of the water tank, if the magnetic float 67 in the water tank rises with the water level, triggering the action of the reed switch 68 and transmitting it to the controller, the controller controls the closing of the fourth solenoid valve 43 and enters the filter element flushing working condition.

In the water tank water inlet condition and the filter element flushing condition, if the user opens the pure water outlet 11 to take water, the water pressure between the check valve 9 and the pure water outlet 11 decreases, and the water pressure sensor 10 sends a signal to the controller , the controller controls the first solenoid valve 42, the third solenoid valve 44 and the fourth solenoid valve 43 to close, the second solenoid valve 41 to open, the water tank water inlet condition or the filter element flushing condition are all stopped, and the normal water production condition is started.

Example 3

After the filter element is flushed, the controller controls the first solenoid valve 42, the third solenoid valve 44 and the booster pump to be closed after a delay of 1 minute. If the user does not open the pure water outlet 11 to take water within 4 hours, the controller will repeat the water tank inlet condition and the filter element flushing condition by itself.

In a word, the above descriptions are only preferred embodiments of the present utility model, and all equal changes and modifications made according to the patent scope of the utility model should fall within the scope of the utility model patent.

Claims (7)

1. from rinsing water-purifying machine, comprise the water-in (1) of connecting successively, preposition filter core (3), topping-up pump (7) and reverse osmosis membrane filter element (8), reverse osmosis membrane filter element (8) comprises filter core pure water water outlet and filter core condensed water water outlet, it is characterized in that: also comprise water tank (6), filter core pure water water outlet is connected with the first threeway (52), the second threeway (51) is provided with between preposition filter core (3) and topping-up pump (7), the water-in of water tank (6) is connected with the first threeway (52), the water outlet of water tank (6) is connected with the first magnetic valve (42), first magnetic valve (42) is connected with the second threeway (51).

2. according to claim 1 from rinsing water-purifying machine, it is characterized in that: also comprise hydraulic pressure sensor (10), the check valve (9) be connected with the first threeway (52) and the pure water that is connected with check valve (9) exports (11), hydraulic pressure sensor (10), for detecting the hydraulic pressure between pure water outlet (11) and check valve (9), is in series with the second magnetic valve (41) between preposition filter core (3) and the second threeway (51).

3. according to claim 1 from rinsing water-purifying machine, it is characterized in that: also comprise the 3rd threeway (54), throttling valve (13) and the 3rd magnetic valve (44), filter core condensed water water outlet is connected with an interface of the 3rd threeway (54), and throttling valve (13) is connected with two other interface of the 3rd threeway (54) respectively with the 3rd magnetic valve (44).

4. according to claim 3 from rinsing water-purifying machine, it is characterized in that: also comprise the 4th threeway (53) and condensed water outlet (12), the 4th threeway (53) exports (12) with condensed water be connected with throttling valve (13), the 3rd magnetic valve (44).

5. according to claim 1 from rinsing water-purifying machine, it is characterized in that: between the water-in of water tank (6) and the first threeway (52), be also provided with the 4th magnetic valve (43).

6. according to claim 1 from rinsing water-purifying machine, it is characterized in that: in water tank, be also provided with column (61), column (61) outer cover is provided with the magneticfloat (67) of annular, column (61) is also fixed with dry-reed tube (68), overhead gage (67) and lower baffle plate (69), magneticfloat (67) is positioned between overhead gage (67) and lower baffle plate (69).

7. according to claim 6 from rinsing water-purifying machine, it is characterized in that: water tank (6) is also provided with water tank air outlet (64), in water tank air outlet (64), be provided with filter screen (65).