CN105198111A - Household water purifier capable of automatically cleaning filter membrane and method - Google Patents
Household water purifier capable of automatically cleaning filter membrane and method Download PDFInfo
- Publication number
- CN105198111A CN105198111A CN201510752943.4A CN201510752943A CN105198111A CN 105198111 A CN105198111 A CN 105198111A CN 201510752943 A CN201510752943 A CN 201510752943A CN 105198111 A CN105198111 A CN 105198111A
- Authority
- CN
- China
- Prior art keywords
- valve
- tds
- ultra
- reverse osmosis
- filtration membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a household water purifier capable of automatically cleaning a filter membrane. The household water purifier comprises a water inlet valve, an ultrafiltration membrane, a first TDS sensor, a high-pressure pump, a reverse osmosis membrane, a proportional valve, rear active carbon, a second TDS sensor, a pressure storage tank, an ultrafiltration membrane rear valve, a reverse osmosis membrane rear valve, a tank front check valve, a water outlet valve, a pilot valve, a flush valve, a first wastewater valve, a second wastewater valve, a third wastewater valve, a detection component for detecting the trans-membrane pressure difference of the ultrafiltration membrane, and a control device for controlling the work of the household water purifier. The control device is used for controlling the household water purifier to be in a cleaning mode or a water making mode according to the ratio of the trans-membrane pressure difference to a pressure difference threshold value. When the trans-membrane pressure difference is greater than the pressure difference threshold value, the control device enables the household water purifier to automatically clean the filter membrane. The household water purifier disclosed by the invention can prolong the service life of the filter membrane, so that the use cost of the household water purifier is reduced.
Description
Technical field
Present invention relates in general to household water filter, relate to specifically a kind of can cleaning filter membranes, the household water filter of exempting from renew cartridge and method automatically.
Background technology
Along with the arrival of economy era, healthy drinking-water makes people more and more pay attention to water purification, and the difference of water due to region or the impact of environment, the purity of water, the quality problem of water is all different, water purifier is on the market by highly purified for water filtration, eliminate the objectionable impurities in water like this, mineral substance in water has also been filtered out simultaneously, a lot of mineral substance in water are all needed by human body, the health of so very unfavorable human body, but do not filter and objectionable impurities is absorbed, cause a lot of inconvenience like this.
The structure formation of existing household water filter has multiple.Such as, ZL2005101304043 discloses a kind of household water filter that name is called " a kind of prevent the method and apparatus of domestic water purifier discharge water from generating secondary pollution ".But household water filter many employings filtration method of prior art purifies water.Must need owing to adopting filtration method to adopt filter membrane to remove the impurity in water.Impurity in water can cause filter membrane that blocking occurs thus impact quality processed, thus needs often cleaning or changes filtering membrane.But general filter membrane is to the small-particle Impurity removal weak effect in water.In order to remove impurities in water, often directly reverse osmosis membrane can be adopted.The use of reverse osmosis membrane not only can remove impurity, also can the simultaneously filtering mineral substance useful to health, causes made water to lack mineral substance.Therefore, the household water filter of prior art or use inconvenience, poor removal effect to the small-particle impurity in water, or water can be caused to lack useful mineral substance.
To sum up, there are the needs to reducing the water purification technology of water mineral content loss while of can reducing and change filtering membrane in prior art.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of can the household water filter of cleaning filter membranes automatically.
For achieving the above object, the invention provides a kind of household water filter of automatic cleaning filter membranes, comprise inlet valve, ultra-filtration membrane, be arranged on the TDS sensor between inlet valve and ultra-filtration membrane, high-pressure pump, the reverse osmosis membrane be connected with high pressure pump outlet end, proportional valve, the post active carbon be connected with proportional valve exit end, the 2nd TDS sensor be connected with post active carbon exit end, pressure vessel, connect the ultra-filtration membrane late gate of ultra-filtration membrane and high pressure pump inlet end, be arranged on the reverse osmosis membrane late gate between reverse osmosis membrane exit end and an inlet end of proportional valve, be arranged on vacuum breaker before the tank between the 2nd TDS sensor and pressure vessel inlet end, be arranged on the flowing water Valve of pressure vessel water side, the by-pass valve be connected between ultra-filtration membrane with proportional valve and with ultra-filtration membrane late gate inlet end, the flushing valve of Bonding pressure storage tank and ultra-filtration membrane, first and second waste water valves of ultra-filtration membrane, the three wastes penstock of reverse osmosis membrane, detect the detection part of the transmembrane pressure of ultra-filtration membrane, with the control device controlling this household water filter work,
The transmembrane pressure of detection is sent to control device by detection part, and the TDS value detected and the 2nd TDS value are sent to control device by a TDS sensor and the 2nd TDS sensor respectively;
Described transmembrane pressure compares with threshold pressure differential by control device, makes household water filter be in cleaning model when transmembrane pressure is greater than threshold pressure differential, otherwise makes household water filter be in aqueous mode processed;
In a cleaning mode, the TDS value that control device detects according to a TDS sensor and the 2nd TDS value that the 2nd TDS sensor detects and a default TDS standard value and the 2nd TDS threshold value determination scavenging period t, there is provided the switch signal of each valve to inlet valve, reverse osmosis membrane late gate, proportional valve, by-pass valve, flushing valve and first to three wastes penstock, and rinse ultra-filtration membrane and reverse osmosis membrane according to the scavenging period determined;
Under aqueous mode processed, described control device provides the switch signal of each valve to inlet valve, reverse osmosis membrane late gate, proportional valve, by-pass valve, flushing valve and first to three wastes penstock, and according to the 2nd TDS value control ratio valve to regulate the TDS value of purifying waste water of post active carbon.
Wherein, described scavenging period is determined by following formula:
β＝(TDS1-TDS
standard)/TDS
standard
In formula, TDS1 is a TDS value, TDS
standardbe a TDS standard value, Δ p is the transmembrane pressure detected, Δ p
efor threshold pressure differential, t
0for the standard cleaning time, t is scavenging period.
In the present invention, automatically clean ultra-filtration membrane and reverse osmosis membrane owing to have employed control device according to the change of the change of the transmembrane pressure of ultra-filtration membrane and water quality from the beginning, the work-ing life of filter membrane can be extended, reduce the use cost of household water filter.Further, due to can according to transmembrane pressure and predetermined threshold, and a TDS value of tap water and a TDS standard value come time, the efficiency that can improve cleaning filter membranes further and the consumption reduced the resource such as water, electricity of dynamic conditioning cleaning filter membranes.In addition, the TDS value of purifying waste water that control device can detect according to the 2nd TDS sensor, regulates proportional valve thus adjusts the TDS value of purifying waste water, providing the quality of purifying waste water.
Accompanying drawing explanation
Fig. 1 is the structural representation of the household water filter of automatic cleaning filter membranes according to the embodiment of the present invention.
Fig. 2 is the schematic diagram of the control section of household water filter according to the embodiment of the present invention.
Fig. 3 is the schematic flow sheet of the method for the automatic cleaning filter membranes of household water filter according to the embodiment of the present invention.
Embodiment
Below in conjunction with concrete accompanying drawing, the invention will be further described.
Those skilled in the art understand, and TDS refers to the dissolvability solid amount in water.TDS value is higher, shows that the impurity in water is more.According to household water filter of the present invention, use 2 filter membranes, one is ultra-filtration membrane, and one is reverse osmosis membrane.Ultrafiltration is used for the impurity in Filtered tap water, but it can not cause the mineral loss in water substantially.Reverse osmosis membrane is used for the fine impurity in filtered water, comprises mineral substance.In order to avoid the loss of too much water mineral, adoption rate valve of the present invention, make a part for the product water of ultra-filtration membrane directly enter the first inlet end of proportional valve, another part generates reverse osmosis water through reverse osmosis membrane and enters the second inlet end of proportional valve.Flow into post active carbon after the ultrafiltration water entering the first inlet end and the reverse osmosis water entering the second inlet end mix in proportional valve, produce to be drunk purifying waste water.In the present invention, according to the water quality condition of tap water, when detecting that the transmembrane pressure of ultra-filtration membrane is greater than predetermined threshold, household water filter starts automatic cleaning filter membranes.Due to can cleaning filter membranes automatically, when ensureing the quality of made water, the work-ing life of filter membrane can be extended, reduce the use cost of household water filter.In the present invention, filter membrane is the general name of ultra-filtration membrane and reverse osmosis membrane.
As shown in Figure 1, the household water filter of automatic cleaning filter membranes of the present invention comprises inlet valve 1, ultra-filtration membrane 2, be arranged on the TDS sensor (Fig. 1 is not shown) between inlet valve 1 and ultra-filtration membrane 2, high-pressure pump 4, the reverse osmosis membrane 5 be connected with high-pressure pump 4 exit end, proportional valve 7, the post active carbon 8 be connected with proportional valve 7 exit end, the 2nd TDS sensor 9 be connected with post active carbon 8 exit end, for storing the pressure vessel 12 of purifying waste water, connect the ultra-filtration membrane late gate 3 of ultra-filtration membrane 2 and high-pressure pump 4 inlet end, be arranged on the reverse osmosis membrane late gate 6 between reverse osmosis membrane 5 exit end and an inlet end of proportional valve 7, be arranged on vacuum breaker 11 before the tank between the 2nd TDS sensor 9 and pressure vessel 12 inlet end, be arranged on the flowing water Valve 13 of pressure vessel 12 water side, the by-pass valve 14 be connected between ultra-filtration membrane 2 with proportional valve 7 and with ultra-filtration membrane late gate 3 inlet end, the flushing valve 15 of Bonding pressure storage tank 12 and ultra-filtration membrane 2, first and second waste water valves 16 and 17 of ultra-filtration membrane, the three wastes penstock 18 of reverse osmosis membrane 5, detect the detection part (Fig. 1 is not shown) of the transmembrane pressure of ultra-filtration membrane 2, with the control device controlling this household water filter work.
Fig. 2 shows the structural representation of control section according to an embodiment of the invention.In Fig. 2, controlled valve refers to the inlet valve in Fig. 1, ultra-filtration membrane late gate, reverse osmosis membrane late gate, vacuum breaker before tank, flowing water Valve, by-pass valve, and flushing valve, first to three wastes penstock.As shown in Figure 2, the transmembrane pressure of detection is sent to control device by detection part, and the TDS value detected and the 2nd TDS value are sent to control device by a TDS sensor and the 2nd TDS sensor respectively.Control device inside can arrange timer, for carrying out timing.Timer can realize by software approach.As selection, the timer of a hardware also can be configured.
The transmembrane pressure of reception compares with threshold pressure differential by control device.When transmembrane pressure is greater than threshold pressure differential, control device makes household water filter be in cleaning model; When transmembrane pressure is less than or equal to threshold pressure differential, control device makes household water filter be in aqueous mode processed.
In a cleaning mode, the TDS value that control device detects according to a TDS sensor and the 2nd TDS value that the 2nd TDS sensor detects and a default TDS standard value and the 2nd TDS threshold value determination scavenging period t, to inlet valve 1, reverse osmosis membrane late gate 6, proportional valve 7, by-pass valve 14, flushing valve 15 and first to three wastes penstock 16,17 and 18 switch signals that each valve is provided, and rinse ultra-filtration membrane 2 and reverse osmosis membrane 5 according to the scavenging period determined.Particularly, when transmembrane pressure is greater than threshold pressure differential, first control device determines scavenging period t.According to embodiments of the invention, scavenging period t can determine as follows:
β＝(TDS1-TDS
standard)/TDS
standard
In formula, TDS1 is a TDS value, TDS
standardbe a TDS standard value, Δ p is the transmembrane pressure detected, Δ p
efor threshold pressure differential, t
0for the standard cleaning time, t is scavenging period.According to embodiments of the invention, scavenging period affects by two factors.One is the water quality of tap water, and represent with a TDS value, a TDS value generally can be greater than a default TDS standard value; Two is transmembrane pressures of ultra-filtration membrane.If water quality is poorer, then cause the time of transmembrane pressure degradation faster, and a TDS value is larger, corresponding β value is also larger.If a TDS value is equal with a TDS standard value, namely tap water is standard water quality, now e
-βvalue is 1, and the determination of so above-mentioned scavenging period t is only by the impact of transmembrane pressure.Transmembrane pressure is larger, and illustrate that ultra-filtration membrane is blocked more serious, filter effect is poorer.Now, be necessary according to transmembrane pressure proper extension scavenging period.But transition extends scavenging period, can cause again the waste of the resource such as water, electricity.Therefore, the beta coefficient relevant to water quality is adopted to regulate scavenging period further.According to above-mentioned formula, the present invention can arrange the time of cleaning filter membrane accurately, when ensureing cleaning performance, saves water further.In the present invention, standard cleaning time t
0it is 5 ~ 10 seconds.Preferably, the threshold pressure differential of cross-film can be set as 2 ~ 3 meters, or is 20-30kPa.
Afterwards, control device is sending shutdown signal to flushing valve 15 and the first waste water valve 16, start signal is sent to inlet valve 1, ultra-filtration membrane late gate 3, flowing water Valve 13, by-pass valve 14 and the second waste water valve 17, timer starts timing, the stream of cleaned water in pressure vessel 12 is made to flow through ultra-filtration membrane 2 through flushing valve 15, flow out, with the back flushing being t to ultra-filtration membrane 2 time of carrying out from wastewater outlet through the first waste water valve 16 again.In the present invention, adopt purifying waste water in pressure vessel to carry out back flushing to ultra-filtration membrane 2, owing to purify waste water than tap water " totally " many, namely few a lot of impurity, thus can protect filter membrane better, the work-ing life of prolongation filter membrane.
As timer timing t time of arrival, namely at the end of the back flushing to ultra-filtration membrane 2, timer restarts timing, control device sends start signal to inlet valve 1 and the second waste water valve 17, send shutdown signal to ultra-filtration membrane late gate 3, by-pass valve 14, flushing valve 15 and the first waste water valve 16 simultaneously, make tap water flow through ultra-filtration membrane 2 through inlet valve 1, then flow out from wastewater outlet through the second waste water valve 17, with the suitable flushing being t to ultra-filtration membrane 2 time of carrying out.
Next, as timer timing t time of arrival, namely at the end of the suitable flushing to ultra-filtration membrane 2, timer restarts timing again, control device is to inlet valve 1, by-pass valve 3 and three wastes penstock 18 send start signal, simultaneously to permeable membrane late gate 6, by-pass valve 14, flushing valve 15, first waste water valve 16 and the second waste water valve 17 send shutdown signal, make tap water through inlet valve 1, ultra-filtration membrane 2, ultra-filtration membrane late gate 3 flows through reverse osmosis membrane 5, flow out from wastewater outlet through three wastes penstock 18 again, with the suitable flushing being t to reverse osmosis membrane 5 time of carrying out.
Afterwards, as timer timing t time of arrival, control device, at the end of the suitable flushing to reverse osmosis membrane 5, makes household water filter return to aqueous mode processed.
Under aqueous mode processed, control device is to inlet valve 1, reverse osmosis membrane late gate 6, proportional valve 7, by-pass valve 14, flushing valve 15 and first to three wastes penstock 16,17 and 18 switch signals that each valve is provided, and according to the 2nd TDS value control ratio valve 7 to regulate the TDS value of purifying waste water of post active carbon 8.Particularly, control device sends start signal to inlet valve 1, ultra-filtration membrane late gate 3, reverse osmosis membrane late gate 6 and by-pass valve 14, send shutdown signal to flushing valve 15, first wastewater effluent valve 16, second wastewater effluent valve 17 and the 3rd waste water flowing water Valve 18, make tap water flow through ultra-filtration membrane 2 and produce ultrafiltration water.The ultrafiltration water of ultra-filtration membrane 2 controls a part by proportional valve 7 and flows through reverse osmosis membrane 5 and produce reverse osmosis water, and another part flows through proportional valve 7 through by-pass valve 14 and mixes with the reverse osmosis water of reverse osmosis membrane 5, and mixed water flows through post active carbon 8 generation purifies waste water.To purify waste water vacuum breaker feed pressure storage tank 12 before tank.When flowing water Valve 13 receives start signal from control device, purify waste water and can flow out through flowing water Valve 13.
Under aqueous mode processed, when control device determines that the 2nd TDS value is greater than the 2nd predetermined TDS threshold value, control device transmits control signal to proportional valve 7 and the ultrafiltration discharge flowing through proportional valve is diminished, and the reverse osmosis water flow flowed out from reverse osmosis membrane becomes large; When determining that the 2nd TDS value is less than or equal to the 2nd predetermined TDS threshold value, control device is large to the transmit control signal ultrafiltration current quantitative change that makes to flow through proportional valve of proportional valve 7, and the reverse osmosis water flow flowed out from reverse osmosis membrane diminishes.According to embodiments of the invention, the 2nd TDS value is maintained 250 ~ 500mg/L, ensures that water outlet contains appropriate mineral substance.As selection, also can, according to the 2nd TDS value, look-up table be used to determine that the adjustment mode of proportional valve is to regulate the blending ratio of ultrafiltration water and reverse osmosis water.Under using the mode of look-up table, described look-up table pre-determines and is stored in control device inside.
Preferably, if after proportion of utilization valve 7 regulates, still cannot ensure that the 2nd TDS value is maintained 250 ~ 500mg/L, mineral substance filter core 10 can be utilized further to ensure the 2nd TDS value.As shown in Figure 1, the household water filter structural representation comprising mineral substance filter core 10 is shown.It will be appreciated by those skilled in the art that mineral substance filter core 10 not necessarily.And, as selection, can shown in Fig. 1 from the water route of vacuum breaker 11 before the 2nd TDS sensor 9 to tank, the 4th valve and the 5th valve (not shown) are set.Before 4th valve directly connects the 2nd TDS sensor and tank, vacuum breaker the 11, five valve is arranged between the 2nd TDS sensor and mineral substance filter core 10, and mineral substance filter core 10 is connected with vacuum breaker before tank 11.When not needing to use mineral substance filter core 10, control device sends shutdown signal to the 5th valve, sends start signal to the 4th valve, makes water cannot flow into mineral substance filter core 10 by the 5th valve; When needs use mineral substance filter core 10, control device sends start signal to the 5th valve, sends shutdown signal, make water cannot flow through the 4th valve and flow through mineral substance filter core 10 to the 4th valve.
Fig. 3 shows the schema of the method for the automatic cleaning filter membranes of the household water filter according to the embodiment of the present invention.
As shown in Figure 1, in step 302, received the transmembrane pressure of detection part detection by function unit, the TDS value detected respectively by a TDS sensor and the 2nd TDS sensor and the 2nd TDS value.
In step 304, described transmembrane pressure compares with threshold pressure differential by control device, and determines whether transmembrane pressure is greater than threshold pressure differential.
When determining that transmembrane pressure is greater than threshold pressure differential, control device makes household water filter be in cleaning model (step 306).Particularly, 2nd TDS value of the TDS value detected according to a TDS sensor and the detection of the 2nd TDS sensor and a default TDS standard value and the 2nd TDS threshold value determination scavenging period t, control device provides the switch signal of each valve to inlet valve, reverse osmosis membrane late gate, proportional valve, by-pass valve, flushing valve and first to three wastes penstock, to rinse ultra-filtration membrane and reverse osmosis membrane according to the scavenging period determined.
Particularly, when transmembrane pressure is greater than threshold pressure differential, first control device determines scavenging period t.Control device inside can arrange timer.Timer can realize by software approach.As selection, the timer of a hardware also can be configured.Scavenging period is determined by following formula:
β＝(TDS1-TDS
standard)/TDS
standard
In formula, TDS1 is a TDS value, TDS
standardbe a TDS standard value, Δ p is the transmembrane pressure detected, Δ p
efor threshold pressure differential, t
0for the standard cleaning time, t is scavenging period.
Afterwards, control device is sending shutdown signal to flushing valve 15 and the first waste water valve 16, start signal is sent to inlet valve 1, ultra-filtration membrane late gate 3, flowing water Valve 13, by-pass valve 14 and the second waste water valve 17, timer starts timing, the stream of cleaned water in pressure vessel is made to flow through ultra-filtration membrane 2 through flushing valve 15, flow out, with the back flushing being t to ultra-filtration membrane 2 time of carrying out from wastewater outlet through the first waste water valve 16 again.
As timer timing t time of arrival, namely at the end of the back flushing to ultra-filtration membrane 2, timer restarts timing, control device sends start signal to inlet valve 1 and the second waste water valve 17, send shutdown signal to ultra-filtration membrane late gate 3, by-pass valve 14, flushing valve 15 and the first waste water valve 16 simultaneously, make tap water flow through ultra-filtration membrane 2 through inlet valve 1, then flow out from wastewater outlet through the second waste water valve 17, with the suitable flushing being t to ultra-filtration membrane 2 time of carrying out.
Next, as timer timing t time of arrival, namely at the end of the suitable flushing to ultra-filtration membrane 2, timer restarts timing again, control device is to inlet valve 1, by-pass valve 3 and three wastes penstock 18 send start signal, simultaneously to permeable membrane late gate 6, by-pass valve 14, flushing valve 15, first waste water valve 16 and the second waste water valve 17 send shutdown signal, make tap water through inlet valve 1, ultra-filtration membrane 2, ultra-filtration membrane late gate 3 flows through reverse osmosis membrane 5, flow out from wastewater outlet through three wastes penstock 18 again, with the suitable flushing being t to reverse osmosis membrane 5 time of carrying out.
Afterwards, as timer timing t time of arrival, control device, at the end of the suitable flushing to reverse osmosis membrane 5, makes household water filter return to aqueous mode processed.
When transmembrane pressure is less than or equal to threshold pressure differential, control device makes household water filter be in aqueous mode (step 308) processed.Particularly, under aqueous mode processed, described control device provides the switch signal of each valve to inlet valve, reverse osmosis membrane late gate, proportional valve, by-pass valve, flushing valve and first to three wastes penstock, to regulate the TDS value of purifying waste water of post active carbon according to the 2nd TDS value control ratio valve.
In the present invention, automatically clean ultra-filtration membrane and reverse osmosis membrane owing to have employed control device according to the change of the change of the transmembrane pressure of ultra-filtration membrane and water quality from the beginning, the work-ing life of filter membrane can be extended, reduce the use cost of household water filter.Further, due to can according to transmembrane pressure and predetermined threshold, and a TDS value of tap water and a TDS standard value come time, the efficiency that can improve cleaning filter membranes further and the consumption reduced the resource such as water, electricity of dynamic conditioning cleaning filter membranes.In addition, the TDS value of purifying waste water that control device can detect according to the 2nd TDS sensor, regulates proportional valve thus adjusts the TDS value of purifying waste water, providing the quality of purifying waste water.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. the household water filter of an automatic cleaning filter membranes, it is characterized in that comprising inlet valve (1), ultra-filtration membrane (2), be arranged on the TDS sensor between inlet valve (1) and ultra-filtration membrane (2), high-pressure pump (4), the reverse osmosis membrane (5) be connected with high-pressure pump (4) exit end, proportional valve (7), the post active carbon (8) be connected with proportional valve (7) exit end, the 2nd TDS sensor (9) be connected with post active carbon (8) exit end, pressure vessel (12), connect the ultra-filtration membrane late gate (3) of ultra-filtration membrane (2) and high-pressure pump (4) inlet end, be arranged on the reverse osmosis membrane late gate (6) between reverse osmosis membrane (5) exit end and an inlet end of proportional valve (7), be arranged on vacuum breaker (11) before the tank between the 2nd TDS sensor (9) and pressure vessel (12) inlet end, be arranged on the flowing water Valve (13) of pressure vessel (12) water side, be positioned at the by-pass valve (14) be connected between ultra-filtration membrane (2) with proportional valve (7) and with ultra-filtration membrane late gate (3) inlet end, the flushing valve (15) of Bonding pressure storage tank (12) and ultra-filtration membrane (2), first and second waste water valves (16 of ultra-filtration membrane, 17), the three wastes penstock (18) of reverse osmosis membrane (5), detect the detection part of the transmembrane pressure of ultra-filtration membrane (2), with the control device controlling this household water filter work,
The transmembrane pressure of detection is sent to control device by detection part, and the TDS value detected and the 2nd TDS value are sent to control device by a TDS sensor and the 2nd TDS sensor respectively;
Described transmembrane pressure compares with threshold pressure differential by control device, makes household water filter be in cleaning model when transmembrane pressure is greater than threshold pressure differential, otherwise makes household water filter be in aqueous mode processed;
In a cleaning mode, the TDS value that control device detects according to a TDS sensor and the 2nd TDS value that the 2nd TDS sensor detects and a default TDS standard value and the 2nd TDS threshold value determination scavenging period t, to inlet valve (1), reverse osmosis membrane late gate (6), proportional valve (7), by-pass valve (14), flushing valve (15) and first to three wastes penstock (16,17,18) switch signal of each valve is provided, and rinses ultra-filtration membrane (2) and reverse osmosis membrane (5) according to the scavenging period determined;
Under aqueous mode processed, described control device is to inlet valve (1), reverse osmosis membrane late gate (6), proportional valve (7), by-pass valve (14), flushing valve (15) and first to three wastes penstock (16,17,18) switch signal of each valve is provided, and according to the 2nd TDS value control ratio valve (7) to regulate the TDS value of purifying waste water of post active carbon (8).
2. household water filter according to claim 1, wherein, described scavenging period is determined by following formula:
β＝(TDS1-TDS
standard)/TDS
standard
In formula, TDS1 is a TDS value, TDS
standardbe a TDS standard value, Δ p is the transmembrane pressure detected, Δ p
efor threshold pressure differential, t
0for the standard cleaning time, t is scavenging period.
3. household water filter according to claim 1 and 2, wherein, to inlet valve (1), reverse osmosis membrane late gate (6), proportional valve (7), by-pass valve (14), flushing valve (15) and first to three wastes penstock (16,17,18) switch signal of each valve is provided, and according to the scavenging period determined, flushing is carried out to ultra-filtration membrane (2) and reverse osmosis membrane (5) and comprising:
Control device sends shutdown signal to flushing valve (15) and the first waste water valve (16), start signal is sent to inlet valve (1), ultra-filtration membrane late gate (3), flowing water Valve (13), by-pass valve (14) and the second waste water valve (17), the stream of cleaned water in pressure vessel is made to flow through ultra-filtration membrane (2) through flushing valve (15), flow out, being the back flushing of t to ultra-filtration membrane (2) time of carrying out from wastewater outlet through the first waste water valve (16) again;
Control device is at the end of the back flushing to ultra-filtration membrane (2), start signal is sent to inlet valve (1) and the second waste water valve (17), send shutdown signal to ultra-filtration membrane late gate (3), by-pass valve (14), flushing valve (15) and the first waste water valve (16) simultaneously, tap water is made to flow through ultra-filtration membrane (2) through inlet valve (1), flow out from wastewater outlet through the second waste water valve (17) again, to ultra-filtration membrane (2) time of carrying out to be the suitable flushing of t;
Control device is at the end of the suitable flushing to ultra-filtration membrane (2), to inlet valve (1), by-pass valve (3) and three wastes penstock (18) send start signal, simultaneously to permeable membrane late gate (6), by-pass valve (14), flushing valve (15), first waste water valve (16) and the second waste water valve (17) send shutdown signal, make tap water through inlet valve (1), ultra-filtration membrane (2), ultra-filtration membrane late gate (3) flows through reverse osmosis membrane (5), flow out from wastewater outlet through three wastes penstock (18) again, to reverse osmosis membrane (5) time of carrying out to be the suitable flushing of t,
Described control device, at the end of the suitable flushing to reverse osmosis membrane (5), makes household water filter return to aqueous mode processed.
4. household water filter according to claim 3, wherein, under aqueous mode processed, control device is to inlet valve (1), reverse osmosis membrane late gate (6), proportional valve (7), by-pass valve (14), flushing valve and first to three wastes penstock (16,17,18) switch signal of each valve is provided to comprise:
Control device sends start signal to inlet valve (1), ultra-filtration membrane late gate (3), reverse osmosis membrane late gate (6) and by-pass valve (14), send shutdown signal to flushing valve (15), the first wastewater effluent valve (16), the second wastewater effluent valve (17) and the 3rd waste water flowing water Valve (18), make tap water flow through ultra-filtration membrane (2) and produce ultrafiltration water;
The ultrafiltration water of ultra-filtration membrane (2) controls a part by proportional valve (7) and flows through reverse osmosis membrane (5) generation reverse osmosis water, another part flows through proportional valve (7) through by-pass valve (14) and mixes with the reverse osmosis water of reverse osmosis membrane (5), and mixed water flows through post active carbon (8).
5. household water filter according to claim 4, wherein, when the 2nd TDS value is greater than the 2nd predetermined TDS threshold value, control device transmits control signal to proportional valve and the permeate water flow flowing through proportional valve is diminished, and the reverse osmosis water flow flowed out from reverse osmosis membrane becomes large;
When the 2nd TDS value is less than or equal to the 2nd predetermined TDS threshold value, control device becomes large to the proportional valve permeate water flow making to flow through proportional valve that transmits control signal, and the reverse osmosis water flow flowed out from reverse osmosis membrane diminishes.
6. household water filter according to claim 1 and 2, wherein, standard cleaning time t
0it is 5 ~ 10 seconds.
7. household water filter according to claim 1, wherein, the 2nd TDS value is maintained 250 ~ 500mg/L.
8. household water filter according to claim 1, comprises further:
Mineral substance filter core (10), is arranged between the 2nd TDS sensor and vacuum breaker (11).
9., for a method for the automatic cleaning filter membranes of household water filter, comprising:
The transmembrane pressure of detection part detection is received, the TDS value detected respectively by a TDS sensor and the 2nd TDS sensor and the 2nd TDS value by function unit;
By control device, described transmembrane pressure is compared with threshold pressure differential;
When transmembrane pressure is greater than threshold pressure differential, control device makes household water filter be in cleaning model: the 2nd TDS value of the TDS value detected according to a TDS sensor and the detection of the 2nd TDS sensor and a default TDS standard value and the 2nd TDS threshold value determination scavenging period t, the switch signal of each valve is provided to three wastes penstock, to rinse ultra-filtration membrane and reverse osmosis membrane according to the scavenging period determined to inlet valve, reverse osmosis membrane late gate, proportional valve, by-pass valve, flushing valve and first;
When transmembrane pressure is less than or equal to threshold pressure differential, control device makes household water filter be in aqueous mode processed: under aqueous mode processed, described control device provides the switch signal of each valve to inlet valve, reverse osmosis membrane late gate, proportional valve, by-pass valve, flushing valve and first to three wastes penstock, to regulate the TDS value of purifying waste water of post active carbon according to the 2nd TDS value control ratio valve;
Wherein, described household water filter comprises inlet valve, ultra-filtration membrane, be arranged on the TDS sensor between inlet valve and ultra-filtration membrane, high-pressure pump, the reverse osmosis membrane be connected with high pressure pump outlet end, proportional valve, the post active carbon be connected with proportional valve exit end, the 2nd TDS sensor be connected with post active carbon exit end, pressure vessel, connect the ultra-filtration membrane late gate of ultra-filtration membrane and high pressure pump inlet end, be arranged on the reverse osmosis membrane late gate between reverse osmosis membrane exit end and an inlet end of proportional valve, be arranged on vacuum breaker before the tank between the 2nd TDS sensor and pressure vessel inlet end, be arranged on the flowing water Valve of pressure vessel water side, the by-pass valve be connected between ultra-filtration membrane with proportional valve and with ultra-filtration membrane late gate inlet end, the flushing valve of Bonding pressure storage tank and ultra-filtration membrane, first and second waste water valves of ultra-filtration membrane, the three wastes penstock of reverse osmosis membrane, detect the detection part of the transmembrane pressure of ultra-filtration membrane, with the control device controlling this household water filter work.
10. method as claimed in claim 9, wherein, described scavenging period is determined by following formula:
β＝(TDS1-TDS
standard)/TDS
standard
In formula, TDS1 is a TDS value, TDS
standardbe a TDS standard value, Δ p is the transmembrane pressure detected, Δ p
efor threshold pressure differential, t
0for the standard cleaning time, t is scavenging period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510752943.4A CN105198111B (en) | 2015-11-06 | 2015-11-06 | The household water filter of automatic cleaning filter membranes and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510752943.4A CN105198111B (en) | 2015-11-06 | 2015-11-06 | The household water filter of automatic cleaning filter membranes and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105198111A true CN105198111A (en) | 2015-12-30 |
| CN105198111B CN105198111B (en) | 2016-08-03 |
Family
ID=54946145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510752943.4A Expired - Fee Related CN105198111B (en) | 2015-11-06 | 2015-11-06 | The household water filter of automatic cleaning filter membranes and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105198111B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651979A (en) * | 2015-12-31 | 2016-06-08 | 芜湖美的厨卫电器制造有限公司 | Method and device for detecting whether weakly acidic resin is in failure or not |
| CN106006844A (en) * | 2016-05-09 | 2016-10-12 | 佛山市云米电器科技有限公司 | Water purifying system and reverse osmosis filter element washing condition judging method thereof |
| CN106881024A (en) * | 2017-04-19 | 2017-06-23 | 大连朗旭环境科技有限公司 | A kind of reverse osmosis membrane medicine washes system |
| CN107694345A (en) * | 2017-11-20 | 2018-02-16 | 海南立昇净水科技实业有限公司 | Water management system |
| CN108218004A (en) * | 2017-12-19 | 2018-06-29 | 北京伟思创科技股份有限公司 | A kind of water purifier and water purifier control method |
| CN108264155A (en) * | 2017-01-04 | 2018-07-10 | 北京思维力科技发展有限公司 | A kind of water purifier for adjusting production water TDS values |
| CN108558045A (en) * | 2018-03-21 | 2018-09-21 | 深圳市家乐士净水科技有限公司 | A kind of balance water treatment system |
| CN109052701A (en) * | 2018-10-09 | 2018-12-21 | 中铁五局集团建筑工程有限责任公司 | A kind of construction site sewage-treatment plant and processing method |
| CN110759507A (en) * | 2019-11-18 | 2020-02-07 | 扬州兄弟环境保护设备工程有限公司 | Method for purifying water in mine |
| CN114074967A (en) * | 2020-08-12 | 2022-02-22 | 云米互联科技(广东)有限公司 | Household water purifying device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5865991A (en) * | 1996-03-11 | 1999-02-02 | Hsu; Chao Fou | Monitoring system for a drinking water purification system |
| CN201517036U (en) * | 2009-09-21 | 2010-06-30 | 杭州司迈特水处理工程有限公司 | Self-cleaning water purifying apparatus |
| CN102826666A (en) * | 2011-06-15 | 2012-12-19 | 杜也兵 | Water purifier provided with total dissolved solid (TDS) monitoring device, and its water quality monitoring method |
| CN103626312A (en) * | 2012-08-29 | 2014-03-12 | 沁园集团股份有限公司 | Filtering method for drinking water |
-
2015
- 2015-11-06 CN CN201510752943.4A patent/CN105198111B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5865991A (en) * | 1996-03-11 | 1999-02-02 | Hsu; Chao Fou | Monitoring system for a drinking water purification system |
| CN201517036U (en) * | 2009-09-21 | 2010-06-30 | 杭州司迈特水处理工程有限公司 | Self-cleaning water purifying apparatus |
| CN102826666A (en) * | 2011-06-15 | 2012-12-19 | 杜也兵 | Water purifier provided with total dissolved solid (TDS) monitoring device, and its water quality monitoring method |
| CN103626312A (en) * | 2012-08-29 | 2014-03-12 | 沁园集团股份有限公司 | Filtering method for drinking water |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651979A (en) * | 2015-12-31 | 2016-06-08 | 芜湖美的厨卫电器制造有限公司 | Method and device for detecting whether weakly acidic resin is in failure or not |
| CN105651979B (en) * | 2015-12-31 | 2018-08-17 | 芜湖美的厨卫电器制造有限公司 | The method and apparatus whether detection weakly acidic resin fails |
| CN106006844A (en) * | 2016-05-09 | 2016-10-12 | 佛山市云米电器科技有限公司 | Water purifying system and reverse osmosis filter element washing condition judging method thereof |
| CN108264155A (en) * | 2017-01-04 | 2018-07-10 | 北京思维力科技发展有限公司 | A kind of water purifier for adjusting production water TDS values |
| CN106881024A (en) * | 2017-04-19 | 2017-06-23 | 大连朗旭环境科技有限公司 | A kind of reverse osmosis membrane medicine washes system |
| CN107694345A (en) * | 2017-11-20 | 2018-02-16 | 海南立昇净水科技实业有限公司 | Water management system |
| CN108218004A (en) * | 2017-12-19 | 2018-06-29 | 北京伟思创科技股份有限公司 | A kind of water purifier and water purifier control method |
| CN108558045A (en) * | 2018-03-21 | 2018-09-21 | 深圳市家乐士净水科技有限公司 | A kind of balance water treatment system |
| CN109052701A (en) * | 2018-10-09 | 2018-12-21 | 中铁五局集团建筑工程有限责任公司 | A kind of construction site sewage-treatment plant and processing method |
| CN110759507A (en) * | 2019-11-18 | 2020-02-07 | 扬州兄弟环境保护设备工程有限公司 | Method for purifying water in mine |
| CN114074967A (en) * | 2020-08-12 | 2022-02-22 | 云米互联科技(广东)有限公司 | Household water purifying device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105198111B (en) | 2016-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105198111A (en) | Household water purifier capable of automatically cleaning filter membrane and method | |
| CN204310876U (en) | Reverse osmosis system and water purifier | |
| CN204369670U (en) | Reverse osmosis water purifier water quality monitoring (WQM) micro computer treatment system | |
| CN109399763B (en) | Reverse osmosis water purification equipment and control method | |
| CN214299540U (en) | Pure water backflow water purification system | |
| CN108975543B (en) | Water purification system and water purifier | |
| CN110845030A (en) | Water purification system and water purification unit | |
| CN111039436A (en) | Water purifier and automatic flushing device and flushing method thereof | |
| CN216825224U (en) | Water purifier device and system | |
| CN203451297U (en) | Sterilizing water purifier | |
| CN111087089A (en) | Water purifier capable of adjusting TDS value and control system and cleaning control method thereof | |
| CN211141695U (en) | Little effluent disposal system of water bag machine | |
| CN212924493U (en) | Water purifier | |
| CN104556303A (en) | Water-saving type reverse osmosis membrane water purifier | |
| CN209322523U (en) | A kind of anti-penetration water purifier with return of waste water system | |
| CN111974218A (en) | Water purification system control method and water purification system | |
| CN215539848U (en) | Water purifier | |
| CN111003766A (en) | Electrodialysis water purification system and water purifier capable of increasing electrode reversing speed | |
| CN211471013U (en) | Water purifier capable of adjusting TDS value | |
| CN211141697U (en) | Flux-controllable micro wastewater treatment system | |
| CN211847397U (en) | Water purifier and automatic flushing device thereof | |
| CN105060532B (en) | Intelligent anti-blocking and water-saving water purifier and water purifying method | |
| CN208632228U (en) | A kind of micro- waste water energy conservation reverse osmosis water purifier of intelligent frequency-conversion | |
| CN108975542B (en) | Water purification system and water purifier | |
| CN206407990U (en) | Micro- useless water purification machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100015 Beijing City, Chaoyang District Road No. 5 Building No. 5 hospital two floor No. 2117 Patentee after: BEIJING JINZE ENVIRONMENTAL ENERGY TECHNOLOGY RESEARCH CO.,LTD. Address before: 100101 Beijing City, Chaoyang District Tatun Lu Feng Lin oasis Theo center A block 9 layer Patentee before: BEIJING JINZE ENVIRONMENT ENERGY TECHNOLOGY RESEARCH CO.,LTD. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20211106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |