CN108623025B - Water purifying device and water purifier - Google Patents
Water purifying device and water purifier Download PDFInfo
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- CN108623025B CN108623025B CN201710177318.0A CN201710177318A CN108623025B CN 108623025 B CN108623025 B CN 108623025B CN 201710177318 A CN201710177318 A CN 201710177318A CN 108623025 B CN108623025 B CN 108623025B
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- pressure
- valve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 402
- 239000002351 wastewater Substances 0.000 claims abstract description 92
- 239000012528 membrane Substances 0.000 claims abstract description 46
- 239000002699 waste material Substances 0.000 claims abstract description 4
- 239000002455 scale inhibitor Substances 0.000 claims description 28
- 238000000746 purification Methods 0.000 claims description 19
- 239000008213 purified water Substances 0.000 claims description 9
- 238000010992 reflux Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 230000000670 limiting effect Effects 0.000 description 17
- 238000011045 prefiltration Methods 0.000 description 10
- 238000001223 reverse osmosis Methods 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 159000000003 magnesium salts Chemical class 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- HIVGXUNKSAJJDN-UHFFFAOYSA-N [Si].[P] Chemical compound [Si].[P] HIVGXUNKSAJJDN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
Abstract
The invention discloses a water purifying device and a water purifier, wherein the water purifying device comprises: the membrane filter element is provided with a water inlet, a pure water outlet and a wastewater outlet; the water inlet end of the first booster pump is connected with the raw water inlet, and the water outlet end of the first booster pump is connected with the water inlet of the membrane filter element; and the second booster pump is connected in series on a pipeline between the first booster pump and the membrane filter core, the water inlet end of the second booster pump is also connected with the wastewater outlet, and the wastewater outlet is also provided with a waste pipe. The technical scheme of the invention can prevent the phenomenon of overlarge backwater flow caused by overlarge pressure difference between the water inlet end of the second booster pump and the wastewater outlet.
Description
Technical Field
The invention relates to the field of water purification, in particular to a water purifying device and a water purifier.
Background
In order to enable the reverse osmosis water purification system to achieve a water saving function, a waste water backflow mode is generally adopted, namely, a pipeline connected with a waste water outlet of the membrane filter element is divided into a waste water pipeline and a backflow pipeline, wherein the waste water pipeline extends to the outside and is used for directly discharging waste water, and the backflow pipeline is connected to a raw water pipeline so as to backflow part of waste water, so that water saving is achieved while the service life of the membrane filter element is ensured. However, when the pressure of the raw water inlet flowing into the water inlet end of the raw water pipeline is low, the pressure difference between the two ends of the return pipeline is large, so that the return water is increased, the front pressure of the reverse osmosis membrane is reduced, and the pure water reverse-osmosis through the membrane filter element is reduced.
Disclosure of Invention
The invention mainly aims to provide a water purifying device which aims to avoid the phenomenon of overlarge backwater flow.
In order to achieve the above object, the present invention provides a water purifying apparatus comprising:
the membrane filter element is provided with a water inlet, a pure water outlet and a wastewater outlet;
the water inlet end of the first booster pump is connected with the raw water inlet, and the water outlet end of the first booster pump is connected with the water inlet of the membrane filter element; and
the second booster pump is connected in series on a pipeline between the first booster pump and the membrane filter core, the water inlet end of the second booster pump is also connected with the wastewater outlet, and the wastewater outlet is also provided with a wastewater discharge pipe.
Preferably, the water purifying apparatus further comprises a controller,
the water inlet end of the first booster pump is provided with a pressure sensor, and the controller is electrically connected with the pressure sensor and is used for controlling the switch of the first booster pump according to the water pressure detected by the pressure sensor; and/or the number of the groups of groups,
the water purification device is characterized in that a temperature sensor is arranged on a communicating pipeline of the water purification device, and the controller is electrically connected with the temperature sensor and used for controlling the switch of the first booster pump according to the water temperature detected by the temperature sensor.
Preferably, the temperature sensor is arranged at the water inlet end of the first booster pump.
Preferably, a return valve is arranged on a pipeline between the water inlet end of the second booster pump and the wastewater outlet, and the controller is electrically connected with the return valve and is used for controlling the opening of the return valve according to the water pressure; and/or the number of the groups of groups,
the controller is used for controlling the opening degree of the reflux valve according to the water temperature.
Preferably, the first booster pump and the second booster pump are two pump heads of the same double-head booster pump, respectively.
Preferably, the waste pipe is provided with a scale inhibitor module and a waste water valve, and the scale inhibitor module is connected in series between the waste water valve and the waste water outlet.
Preferably, a first one-way valve is further arranged on a pipeline between the wastewater outlet and the scale inhibitor module.
Preferably, a preposed filter element is further arranged on a pipeline between the first booster pump and the raw water port, and a purified water outlet is arranged on the pipeline between the preposed filter element and the first booster pump.
Preferably, the water purifying apparatus further comprises:
a controller;
the water inlet valve is connected in series to a pipeline connecting the raw water port and the first booster pump;
the water storage piece is connected with the pure water outlet; and
the first detection piece is arranged on a pipeline between the pure water outlet and the water storage piece and is used for detecting the water quantity in the water storage piece, and the controller is electrically connected with the first detection piece and is used for controlling the water inlet valve to be closed when the water quantity reaches a preset value.
Preferably, the water storage part is a pressure tank, the first detection part is a pressure switch, and the controller is used for controlling the pressure switch to be disconnected when the pressure switch detects that the pressure in the pressure tank reaches an upper limit value.
Preferably, the water storage piece is a water bag, the water purifying device further comprises a water pump, the water inlet end of the water pump is communicated with the water storage piece, and the water outlet end of the water pump is communicated with an external water outlet.
Preferably, the water purifying device further comprises a second detecting member arranged between the water pump and the external water outlet, the second detecting member is used for detecting a switch of the external water outlet, the controller is electrically connected with the second detecting member and used for controlling the water pump to be started when the external water outlet is opened and controlling the water pump to be closed when the external water outlet is closed.
Preferably, the second detecting part is a pressure switch, a second one-way valve is further arranged on a pipeline between the pressure switch and the water pump, and the pressure switch is used for detecting the pressure of the water outlet end of the second one-way valve.
Preferably, the water purifying device further comprises a flow limiting valve, the flow limiting valve is arranged in parallel with the water pump, the controller is electrically connected with the flow limiting valve and used for controlling the flow limiting valve to be closed when the external water outlet is opened, and controlling the flow limiting valve to be opened when the external water outlet is closed.
The invention also provides a water purifier, which comprises:
the membrane filter element is provided with a water inlet, a pure water outlet and a wastewater outlet;
the water inlet end of the first booster pump is connected with the raw water inlet, and the water outlet end of the first booster pump is connected with the water inlet of the membrane filter element; and
the second booster pump is connected in series on a pipeline between the first booster pump and the membrane filter core, the water inlet end of the second booster pump is also connected with the wastewater outlet, and the wastewater outlet is also provided with a wastewater discharge pipe.
According to the invention, the first booster pump and the second booster pump are arranged between the raw water port and the membrane filter core, so that after raw water flows into the raw water port, the first booster pump can carry out primary booster on water flow first, so that the water pressure is increased, the load of the second booster pump is lightened, and the second booster pump carries out secondary booster on the water flow, so that the water pressure is further increased, and the working water pressure required by the membrane filter core is met. Meanwhile, as part of wastewater flowing out of the wastewater outlet flows back to the water inlet end of the second booster pump, when the water pressure of the original water gap is lower, the pressure boosting effect of the first booster pump can enable the water pressure between the two booster pumps to be higher, so that the pressure difference between the wastewater outlet and the water inlet end of the second booster pump is smaller, the water quantity flowing back to the water inlet end of the second booster pump through the wastewater outlet is also more stable, the influence of the water pressure of the original water gap on the water return quantity is smaller, the phenomenon that the water return quantity is overlarge due to the lower water pressure of the original water gap is avoided, and the working pressure of the front end of the membrane filter core is also ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a water purifying apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of another embodiment of the water purifying apparatus of the present invention;
fig. 3 is a schematic structural view of a water purifying apparatus according to another embodiment of the present invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 11 | Front filter element | 21 | Waste water valve |
| 12 | Water inlet valve | 22 | Water storage piece |
| 13 | First booster pump | 23 | First detecting piece |
| 14 | Second booster pump | 24 | Water pump |
| 15 | Pressure transmissionSensor(s) | 25 | Rear filter element |
| 16 | Temperature sensor | 26 | Second detecting piece |
| 17 | Reflux valve | 27 | Flow limiting valve |
| 18 | Membrane filter element | 28 | Second one-way valve |
| 19 | First one-way valve | 29 | Third one-way valve |
| 20 | Scale inhibitor module |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a water purifier, which comprises a shell and a water purifying device positioned in the shell.
In an embodiment of the present invention, as shown in fig. 1, the water purifying apparatus includes:
a membrane cartridge 18 having a water inlet a, a pure water outlet b and a waste water outlet c;
a first booster pump 13, the water inlet end of which is connected with the raw water port e, and the water outlet end of which is connected with the water inlet a of the membrane filter element 18; and
the second booster pump 14 is connected in series on a pipeline between the first booster pump 13 and the membrane filter element 18, the water inlet end of the second booster pump 14 is also connected with the wastewater outlet c, and the wastewater outlet c is also provided with a wastewater discharge pipe.
In general, for multistage filtration of raw water, one or more pre-filter elements 11 are further provided at the water inlet a of the membrane cartridge 18, and one or more post-filter elements 25 are provided at the pure water outlet b of the membrane cartridge 18. Preferably, the membrane cartridge 18 is a reverse osmosis membrane cartridge 18.
During specific operation, raw water at the raw water port e flows into the communication pipeline, primary filtration is performed through the pre-filter element 11, pressurized by the first booster pump 13 and the second booster pump 14 flows to the water inlet a of the membrane filter element 18, the membrane filter element 18 purifies the raw water to obtain pure water, the pure water flows out of the pure water outlet b for drinking by a user, the residual concentrated water filtered by the membrane filter element 18 is divided into two parts, one part is directly discharged from the outside through the waste water outlet c and the waste discharge pipe, the other part flows back to the water inlet end of the second booster pump 14 through the waste water outlet c, and the other part continues to be filtered through the membrane filter element 18 under the pressurization of the second booster pump 14, so that more pure water can be prepared, the effective utilization rate of the raw water is improved, and water saving is realized. Meanwhile, partial waste water flows back, so that the pressure in front of the reverse osmosis membrane is guaranteed, and the service life of the reverse osmosis membrane is prolonged. (the straight arrow in the figure is the direction of water flow)
In the invention, by arranging the first booster pump 13 and the second booster pump 14 between the raw water port and the membrane filter core 18, after raw water flows into the raw water port, the first booster pump 13 can firstly carry out primary booster on water flow so as to increase the water pressure, thus reducing the load of the second booster pump 14, and the second booster pump 14 carries out secondary booster on the water flow so as to further increase the water pressure, thus meeting the working water pressure required by the membrane filter core 18. Meanwhile, as part of the wastewater flowing out of the wastewater outlet flows back to the water inlet end of the second booster pump 14, when the water pressure of the original water gap is lower, the booster effect of the first booster pump 13 can ensure that the water pressure between the two booster pumps is higher, so that the pressure difference between the wastewater outlet and the water inlet end of the second booster pump 14 is smaller, the water quantity flowing back to the water inlet end of the second booster pump 14 through the wastewater outlet is also more stable, the influence of the water pressure of the original water gap on the water return quantity is smaller, the phenomenon that the water return quantity is overlarge due to the lower water pressure of the original water gap is avoided, and the working pressure of the front end of the membrane filter element 18 is also ensured.
As shown in fig. 2, the water purifying device further includes a controller, the water inlet end of the first booster pump 13 is provided with a pressure sensor 15, and the controller is electrically connected with the pressure sensor 15 and is used for controlling the switch of the first booster pump 13 according to the water pressure detected by the pressure sensor 15; and/or, a temperature sensor 16 is arranged on the communicating pipe of the water purifying device, and the controller is electrically connected with the temperature sensor 16 and is used for controlling the switch of the first booster pump 13 according to the water temperature detected by the temperature sensor 16.
Specifically, in some embodiments of the present invention, the water inlet end of the first booster pump 13 is provided with a pressure sensor 15, the pressure sensor 15 is used to detect the pressure of the water inlet end of the first booster pump 13, and the controller controls the switch of the first booster pump 13 according to the detected pressure. Specifically, when the detected pressure is large and reaches the upper limit value, the controller controls the first booster pump 13 to stop operating to save electric power. When the detected pressure is too small to reach the lower limit value, the controller controls the first booster pump 13 to be started so as to improve the water pressure between the first booster pump 13 and the second booster pump 14 and reduce the pressure difference between the wastewater outlet c and the water inlet end of the second booster pump 14, thereby reducing the reflux water quantity.
In other embodiments, the communicating pipe is provided with a temperature sensor 16, and the temperature sensor 16 can be disposed at any position of the communicating pipe for detecting water temperature. Because the viscosity of water molecules is higher when the water temperature is lower, the water flow is harder to pass through the membrane filter core 18, so that the water amount of the wastewater which does not pass through the membrane filter core 18 is higher, namely the water pressure at the wastewater outlet c is higher, and the water pressure difference between the wastewater outlet c and the water inlet end of the second booster pump 14 is larger, when the temperature sensor 16 detects that the water temperature is lower, for example, the water temperature is lower than a lower limit value, the controller controls the first booster pump 13 to be started so as to boost the water flow, so that the water pressure between the first booster pump 13 and the second booster pump 14 is increased, and the pressure difference between the wastewater outlet c and the water inlet end of the second booster pump 14 is reduced. In contrast, when the water temperature is higher, the viscosity of water molecules is smaller, and water flows through the membrane filter core 18 more easily, so that the amount of wastewater which does not pass through the membrane filter core 18 is smaller, that is, the water pressure at the wastewater outlet c is smaller, and the water pressure difference between the wastewater outlet and the water inlet end of the second booster pump 14 is smaller, so that when the temperature sensor 16 detects that the water temperature is higher, such as the higher upper limit value, the controller controls the first booster pump 13 to stop working.
In still other embodiments, the water inlet end of the first booster pump 13 is provided with a pressure sensor 15, and the communicating pipe is provided with a temperature sensor 16, and in this embodiment, by simultaneously providing the pressure sensor 15 and the temperature sensor 16, the water pressure and the water temperature can be detected at the same time, so as to better control the on-off of the first booster pump 13.
The temperature sensor 16 may be disposed on any pipe, preferably, the temperature sensor 16 is disposed at the water inlet end of the first booster pump 13, so that the temperature sensor 16 detects the raw water temperature, and the water temperature can reflect the speed of the effluent passing through the membrane filter element 18, thereby being more beneficial for the controller to accurately control the switch of the first booster pump 13. The temperature sensor 16 and the pressure sensor 15 may be provided separately or integrally in this embodiment.
The first booster pump 13 and the second booster pump 14 are two pump heads of the same double-head booster pump, so that the structure is more compact, and the whole volume of the device is reduced. Of course, the first booster pump 13 and the second booster pump 14 may be two independently provided booster pumps.
A return valve 17 is arranged on a pipeline between the water inlet end of the second booster pump 14 and the wastewater outlet c, and the controller is electrically connected with the return valve 17 and is used for controlling the opening of the return valve 17 according to the water pressure; and/or the controller is used for controlling the opening degree of the reflux valve 17 according to the water temperature.
In this embodiment, the return valve 17 is preferably an electromagnetic valve or a wastewater proportioner, and the size of the return water amount can be adjusted by adjusting the switch of the return valve 17, so that the pressure before the membrane is ensured to be proper, the service life of the permeable membrane is prolonged, and water saving can be realized.
The water purifying device further comprises a waste water valve 21 arranged on the waste water discharge pipe, one end of the waste water valve 21 is connected with the waste water outlet c, and the other end of the waste water valve is connected with an external waste water discharge port.
The waste water valve 21 is preferably an electromagnetic valve or a waste water proportioner, so that the size of waste water flow can be adjusted, and when the whole system is used for preparing pure water, the excessive flow of waste water discharged from the outside can be avoided by adjusting the opening of the waste water valve 21, and the excessive flow of waste water can cause the excessive low water pressure at the front end of the reverse osmosis membrane; and when the waste water valve 21 needs to be flushed, the waste water valve 21 is flushed better by adjusting the waste water valve 21 to the fully open state to increase the waste water flow.
In order to avoid the blockage of the waste water valve 21 by scale, the water purifying device further comprises a scale inhibitor module 20, wherein the scale inhibitor module 20 is connected in series on a pipeline between the waste water valve 21 and the waste water outlet c. Specifically, the scale inhibitor module 20 includes a scale inhibitor, which is preferably a phosphate species, such as silicon phosphorus crystals. The scale inhibitor can separate out phosphate matters to form soluble complex with calcium and magnesium ions in water, so as to prevent the formation of scale such as calcium and magnesium salts. Of course, the scale inhibitor may be a non-phosphate substance, and the type of the scale inhibitor is not limited in the embodiment of the present invention, but only a substance capable of preventing scale formation. In order to prevent the scale inhibitor from being washed away by the wastewater, the scale inhibitor module 20 further includes a filter screen, which may be in a sheet shape and disposed between the wastewater valve 21 and the scale inhibitor, so as to block the scale inhibitor from flowing out along with the wastewater, and of course, the filter screen may also enclose to form a containing cavity, and the scale inhibitor is disposed in the containing cavity.
In the invention, by arranging the scale inhibitor module 20 in the pipeline between the waste water valve 21 and the waste water outlet c, when waste water flows through the scale inhibitor module 20, the scale inhibitor in the scale inhibitor module 20 can be slowly released and form soluble complex with calcium and magnesium ions in water so as to prevent the generation of scale such as calcium and magnesium salts, thereby avoiding the phenomenon that the scale adheres to the waste water valve 21 to block the waste water valve 21. Meanwhile, since the scale inhibitor module 20 is arranged between the waste water valve 21 and the waste water outlet c, the waste water after the effect of the scale inhibitor is directly discharged to the outside, thereby avoiding the phenomenon that the pure water contains the scale inhibitor.
The pipeline between the scale inhibitor module 20 and the wastewater outlet c is also provided with a first one-way valve 19, the water inlet end of the reflux valve 17 is connected with the water inlet end of the first one-way valve 19, and the first one-way valve 19 is used for preventing wastewater from flowing back to the reflux valve 17. In this embodiment, by providing the first check valve 19, the scale inhibitor dissolved in the wastewater can be prevented from flowing back to the return valve 17, and thus pollution to the raw water can be prevented.
As shown in fig. 2, the water purifying device generally further includes a pre-filter 11, the pre-filter 11 is disposed on a pipeline between the raw water port e and the first booster pump 13, and a purified water outlet d is further disposed on a pipeline between the pre-filter 11 and the booster pump. The raw water can be subjected to primary filtration by arranging the pre-filter element 11, the raw water filtered by the pre-filter element 11 is greatly reduced in impurities, bacteria and the like, and can be used by a user, so that a purified water outlet d is arranged at the water outlet end of the pre-filter element 11, and the user can use the water filtered by the pre-filter element 11 only, thereby achieving the purpose of quality-classifying water.
The water purifying apparatus further includes: a water inlet valve 12 connected in series with a pipeline connecting the first booster pump 13 and the raw water port e; a water storage member 22 connected to the pure water outlet b; and a first detecting member 23 disposed between the purified water outlet b and the water storage member 22 for detecting the amount of water in the water storage member 22, the controller being electrically connected to the first detecting member 23 and for controlling the opening and closing of the water inlet valve 12 according to the amount of water, specifically, when the amount of water reaches a preset value, the controller controls the water inlet valve 12 to be closed. In this embodiment, the first detecting member 23 is configured to detect the amount of water in the water storage member 22, and specifically may detect the water pressure, the liquid level, the weight, or the like in the water storage member 22. The preset value of the water amount in the water storage member 22 reaching the preset value may be an upper limit value or a lower limit value, for example, in some embodiments, the preset value refers to an upper limit value, that is, when the water storage member 22 stores more water or is completely full, the controller controls the water inlet valve 12 to be closed so that raw water does not flow in any more, and meanwhile, the controller is further used for controlling the first booster pump 13 and the second booster pump 14 to stop working so that the whole machine is stopped. In other embodiments, the preset value refers to a lower limit value, that is, when the water storage in the water storage piece 22 is less, it indicates that the flow of raw water is faulty (for example, the water inlet valve 12 is closed or the water inlet end of the pre-filter 11 is not connected to the raw water inlet e, etc.), at this time, the controller controls the water inlet valve 12 to be closed, and controls the first booster pump 13 and the second booster pump 14 to stop working, so that the whole machine is stopped, thereby facilitating the user to remove the fault. In this embodiment, by providing the water storage member 22, pure water obtained after filtration through the membrane cartridge 18 can be stored for use by a user.
In the above, the water inlet valve 12 is preferably provided between the purified water outlet d and the first booster pump 13, so that when the purified water flowing out of the purified water outlet is used, the waste water in the return valve 17 can be prevented from flowing back to the purified water outlet d by closing the water inlet valve 12.
The water storage member 22 may be a pressure tank, a water bag, a normal water tank, or the like, for example, in one embodiment, the water storage member 22 is a pressure tank, the first detecting member 23 is a pressure switch, and the controller is configured to control the pressure switch to be turned off when the pressure switch detects that the pressure in the pressure tank reaches an upper limit value. Specifically, when the pressure tank is full of water, water overflows and flows back, a pressure switch senses the pressure of the backflow, and the controller controls the pressure switch to be turned off and controls the water inlet valve 12 to be turned off according to the detected pressure.
In another embodiment, referring to fig. 3 in combination, the water storage member 22 is a water bag, the water purifying device further includes a water pump 24, the water inlet end of the water pump 24 is communicated with the water storage member 22, and the water outlet end is communicated with the external water outlet f. The water pump 24 is used to pump out pure water in the water bag when the user needs water. In this embodiment, the first detecting member 23 is a liquid level detector or a pressure sensor 15 or a weight detector or the like provided in the water storage bag.
Further, in this further embodiment, the water purifying device further includes a second detecting member 26 disposed between the water pump 24 and the external water outlet f, the second detecting member 26 is configured to detect the opening and closing of the external water outlet f, the controller is electrically connected to the second detecting member 26 and is configured to control the water pump 24 to be opened and closed according to the opening and closing of the external water outlet f, specifically, when the external water outlet f is opened, the controller controls the water pump 24 to be opened, and when the external water outlet f is closed, the controller controls the water pump 24 to be closed. In this embodiment, the second detecting member 26 may be a contact sensor or a pressure sensor 15, or the like, that is, senses whether the water outlet valve is opened by contact with the water outlet valve at the external water outlet f, or determines whether the water outlet is opened by detecting a change in the pressure of the water outlet. Preferably, the second detecting member 26 is a pressure switch, and a second one-way valve 28 is further disposed between the pressure switch and the water pump 24, and the pressure switch is used for detecting the pressure of the water outlet end of the second one-way valve 28. By providing the second check valve 28, the backflow of pure water flowing to the external water outlet f is avoided, when the external water outlet f is closed, the pressure in the pipeline between the external water outlet f and the second check valve 28 is increased due to the fact that pure water continuously flows to the external water outlet f, when the pressure switch detects that the pressure at the external water outlet f is increased, the controller controls the water pump 24 to stop working because pure water is not needed by a user.
The water purifying device further comprises a flow limiting valve 27, the flow limiting valve 27 is arranged in parallel with the water pump 24, and the controller is electrically connected with the flow limiting valve 27 and used for controlling the flow limiting valve 27 to be opened or closed according to the opening or closing of the external water outlet f. Specifically, the controller controls the flow limiting valve 27 to be closed when the external water outlet f is opened, and controls the flow limiting valve 27 to be opened when the external water outlet f is closed. Specifically, the restrictor valve 27 is connected between the water pump 24 and the water storage member 22 at one end, and between the water pump 24 and the second check valve 28 at the other end. In this embodiment, when the external water outlet f is opened, if the flow limiting valve 27 is opened, water pumped through the water pump 24 will flow back from the flow limiting valve 27 to the water inlet end of the water pump 24, so when the external water outlet f is opened, the flow limiting valve 27 needs to be closed; when the external water outlet f is closed, if the water pump 24 is still working to pump water in the water bag, the flow limiting valve 27 needs to be opened, so that the pumped water flows back into the water bag through the flow limiting valve 27, and the excessive water pressure at the external water outlet f is avoided.
In order to avoid the water from the external water outlet f flowing back into the membrane cartridge 18, the water purifying device further comprises a third one-way valve 29, wherein the third one-way valve 29 is positioned on the pipeline between the pure water outlet b and the water storage piece 22.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (13)
1. A water purification apparatus, comprising:
the membrane filter element is provided with a water inlet, a pure water outlet and a wastewater outlet;
the water inlet end of the first booster pump is connected with the raw water inlet, and the water outlet end of the first booster pump is connected with the water inlet of the membrane filter element; and
the second booster pump is connected in series on a pipeline between the first booster pump and the membrane filter core, the water inlet end of the second booster pump is also connected with the wastewater outlet, and the wastewater outlet is also provided with a wastewater discharge pipe; and
the water inlet end of the first booster pump is provided with a pressure sensor, and the controller is electrically connected with the pressure sensor and is used for controlling the switch of the first booster pump according to the water pressure detected by the pressure sensor;
the first booster pump and the second booster pump are two pump heads of the same double-head booster pump;
the pipeline between the first booster pump and the raw water port is also provided with a preposed filter element, and the pipeline between the preposed filter element and the first booster pump is provided with a purified water outlet.
2. The water purification apparatus of claim 1, wherein a temperature sensor is provided on a communication pipe of the water purification apparatus, and the controller is electrically connected to the temperature sensor and is configured to control a switch of the first booster pump according to a water temperature detected by the temperature sensor.
3. The water purification apparatus of claim 2, wherein the temperature sensor is provided at a water inlet end of the first booster pump.
4. The water purification apparatus of claim 2, wherein a return valve is provided on a pipe between the water inlet end of the second booster pump and the wastewater outlet, and the controller is electrically connected with the return valve and is used for controlling the opening of the return valve according to the water pressure; and/or the number of the groups of groups,
the controller is used for controlling the opening degree of the reflux valve according to the water temperature.
5. The water purification apparatus of claim 1, wherein the waste pipe is provided with a scale inhibitor module and a waste water valve, the scale inhibitor module being connected in series between the waste water valve and the waste water outlet.
6. The water purification apparatus of claim 5, wherein a first one-way valve is further provided on the line between the wastewater outlet and the scale inhibitor module.
7. The water purification apparatus of claim 1, wherein the water purification apparatus further comprises:
a controller;
the water inlet valve is connected in series to a pipeline connecting the raw water port and the first booster pump;
the water storage piece is connected with the pure water outlet; and
the first detection piece is arranged on a pipeline between the pure water outlet and the water storage piece and is used for detecting the water quantity in the water storage piece, and the controller is electrically connected with the first detection piece and is used for controlling the water inlet valve to be closed when the water quantity reaches a preset value.
8. The water purification apparatus of claim 7, wherein the water storage member is a pressure tank, the first detection member is a pressure switch, and the controller is configured to control the pressure switch to be turned off when the pressure switch detects that the pressure in the pressure tank reaches an upper limit value.
9. The water purification apparatus of claim 7, wherein the water storage member is a water bag, and the water purification apparatus further comprises a water pump, wherein a water inlet end of the water pump is communicated with the water storage member, and a water outlet end is communicated with an external water outlet.
10. The water purification apparatus of claim 9, further comprising a second sensing member disposed between the water pump and the external water outlet, the second sensing member being configured to sense a switch of the external water outlet, the controller being electrically connected to the second sensing member and configured to control the water pump to be turned on when the external water outlet is opened and to control the water pump to be turned off when the external water outlet is closed.
11. The water purification apparatus of claim 10, wherein the second detecting member is a pressure switch, a second one-way valve is further disposed on a pipeline between the pressure switch and the water pump, and the pressure switch is used for detecting the pressure of the water outlet end of the second one-way valve.
12. The water purification apparatus of claim 10, further comprising a restrictor valve disposed in parallel with the water pump, the controller electrically connected to the restrictor valve and configured to control the restrictor valve to close when the external water outlet is open and to open when the external water outlet is closed.
13. A water purifier comprising a water purifying device according to any one of claims 1 to 12.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710177318.0A CN108623025B (en) | 2017-03-22 | 2017-03-22 | Water purifying device and water purifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710177318.0A CN108623025B (en) | 2017-03-22 | 2017-03-22 | Water purifying device and water purifier |
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| CN108623025A CN108623025A (en) | 2018-10-09 |
| CN108623025B true CN108623025B (en) | 2023-10-31 |
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| CN110873214B (en) * | 2019-10-22 | 2021-05-18 | 宁波方太厨具有限公司 | Waste water ratio device |
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