CN220812106U

CN220812106U - Water-saving water purification equipment

Info

Publication number: CN220812106U
Application number: CN202322250264.XU
Authority: CN
Inventors: 王金虎
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-08-21
Filing date: 2023-08-21
Publication date: 2024-04-19
Anticipated expiration: 2033-08-21

Abstract

The utility model provides a water-saving water purifying device, which relates to the technical field of water purifying devices and comprises: hanging plate, RO (reverse osmosis) membrane filter component, water-saving component and drain pipe; the hanging plate is L-shaped and is used for fixing all parts of the water-saving water purifying equipment; the RO membrane filtering component is fixed on the vertical plate surface of the hanging plate by using a pipe clamp; the water-saving component is fixed on the horizontal plate surface of the hanging plate, is connected between the RO membrane filtering component and the drain pipe and is used for controlling the discharge and backflow of wastewater into the RO membrane filtering component; one end of the drain pipe is connected with the water-saving component, and the other end of the drain pipe is inserted into the sewer for discharging waste water. According to the water-saving water purifying equipment, the circulation timing controller is used for setting and adjusting the opening and closing time length of the water-saving electromagnetic valve according to the quality of the purified raw water, so that the discharge amount of waste water is adjusted, part of waste water with a low TDS value is secondarily purified, the discharge of the waste water is reduced on the premise of reaching the water purifying standard, the water is saved, and the environment is protected.

Description

Water-saving water purification equipment

Technical Field

The utility model relates to the technical field of water purifying equipment, in particular to water-saving water purifying equipment.

Background

At present, along with the continuous improvement of the requirements of health and life quality of people, the water purifying device is widely applied to household and commercial water purifying systems. The existing water purifying equipment generally adopts a membrane separation technology to purify water. The membrane separation technology refers to a technology for realizing selective separation when a mixture of molecules with different particle diameters passes through a semipermeable membrane, wherein the semipermeable membrane is also called a separation membrane or a filter membrane, and the membrane wall is full of small holes and can be divided into the following components according to the pore size: microfiltration Membrane (MF), ultrafiltration membrane (UF), nanofiltration membrane (NF), reverse osmosis membrane (RO) and the like, wherein the reverse osmosis membrane (RO) is a core element of the existing water purifying equipment. Reverse osmosis is a process in which water molecules are separated from solutes in a body of water by utilizing the selective permeability of a selective membrane that is permeable only to water but not to solutes, with the pressure higher than the osmotic pressure as an impetus.

Existing water purification devices generally use RO (reverse osmosis) membrane separation technology to purify water. The water purifying device can discharge a large amount of wastewater while obtaining purified water meeting the purified water standard. Under the condition of lower TDS of raw water, the TDS value of the wastewater discharged by the water purifying equipment is also lower, and the wastewater with lower TDS can be wasted, so that the method does not accord with the concepts of saving water and sustainable development.

Disclosure of utility model

The utility model aims to provide a water-saving water purifying device so as to solve at least one technical problem in the prior art.

In order to solve the above technical problems, the present utility model provides a water-saving water purification apparatus, comprising: hanging plate, RO (reverse osmosis) membrane filter component, water-saving component and drain pipe;

The hanging plate is L-shaped and is used for fixing all parts of the water-saving water purifying equipment;

the RO membrane filtering component is fixed on the vertical plate surface of the hanging plate by using a pipe clamp;

The water-saving component is fixed on the horizontal plate surface of the hanging plate, is connected between the RO membrane filtering component and the drain pipe and is used for controlling the wastewater to be discharged and flow back into the RO membrane filtering component;

One end of the drain pipe is connected with the water-saving part, and the other end of the drain pipe is inserted into a sewer for discharging wastewater.

Further, the RO membrane filtration component comprises: a filter element and an RO membrane shell;

The filter element is an RO membrane and is arranged in the RO membrane shell and is used for filtering raw water so as to remove bacteria, viruses, heavy metals and other organic impurities in the water;

The RO membrane shell is provided with the cap, with RO membrane shell uses threaded connection, cap one end is provided with a water inlet, and the other end is provided with a water purification mouth of a river and a waste water mouth of a river, and the raw water is passed through the water inlet of RO membrane shell flows in, filters the separation through the filter core and becomes water purification and waste water, and the water purification is followed the water purification mouth of RO membrane shell flows out, and the waste water is followed the waste water mouth of RO membrane shell flows out.

Further, a water purifying port of the RO membrane shell is provided with a check valve for preventing the water from flowing back.

Further, the water saving part includes: a water-saving electromagnetic valve, a return pipe and a circulation timing controller;

The water-saving electromagnetic valve is connected between the wastewater outlet of the RO membrane shell and the drain pipe and is used for controlling wastewater to be discharged and flow back into the RO membrane filtering component;

One end of the return pipe is connected between the waste water port of the RO membrane shell and the water-saving electromagnetic valve by using a tee joint, and the other end of the return pipe is connected with the water inlet of the RO membrane shell and is used for returning waste water to the RO membrane filtering component.

The circulation timing controller is connected with the water-saving electromagnetic valve in series and is used for setting the opening and closing time length of the water-saving electromagnetic valve. When purifying raw water with different water qualities, the purification precision and the wastewater flow are ensured by setting and adjusting different opening and closing time periods of the water-saving electromagnetic valve.

Setting criteria of the cycle timing controller: purifying raw water with high TDS value, and adjusting the opening time of the water-saving electromagnetic valve to be longer and the closing time to be shorter; purifying raw water with low TDS value, and regulating the opening time length of the water-saving electromagnetic valve to be short and regulating the closing time length of the water-saving electromagnetic valve to be long. The purpose is to mix the filtered waste water with lower TDS value with the raw water by the reflux pipe, and flow into the RO membrane filter unit again for secondary purification, thereby reducing the discharge of waste water, saving water and protecting environment.

Further, the return pipe is provided with a check valve for preventing raw water, which is not purified, from being discharged through the return pipe.

Further, the water-saving water purification equipment further comprises a waste water ratio electromagnetic valve, wherein the waste water ratio electromagnetic valve is fixed on the horizontal plate surface of the hanging plate, is connected between the waste water port of the RO membrane shell and the return pipe, and is used for controlling flushing of the water-saving water purification equipment and controlling the proportion of discharged waste water during water control.

Further, the water-saving water purifying device further comprises a booster pump, wherein the booster pump is fixed on the horizontal plate surface of the hanging plate, is connected between the water inlet of the RO membrane shell and the return pipe, and is used for increasing the raw water pressure flowing into the RO membrane filtering component.

Further, the water-saving water purifying equipment further comprises a preposed three-stage filter flask, wherein the preposed three-stage filter flask is fixed below the horizontal plate surface of the hanging plate and is a first-stage filter flask, a second-stage filter flask and a third-stage filter flask respectively;

The front three-stage filter bottles are provided with bottle caps which are in threaded connection with the front three-stage filter bottles; the top of bottle lid all is provided with a water inlet and a delivery port, the delivery port of first level filter flask with the water inlet of second level filter flask is connected, the delivery port of second level filter flask with the water inlet of third level filter flask is connected, the delivery port of third level filter flask uses the tee bend to connect the booster pump with between the back flow.

Further, a PP (polypropylene melt-blown) cotton filter element is arranged in the first-stage filter flask and is used for carrying out preliminary filtration on raw water to remove coarse particle impurities, sludge, colloid, suspended substances and the like in the water.

Further, an active carbon filter element is arranged in the second-stage filter flask and is used for adsorbing suspended particles such as peculiar smell, heterochromatic, trichloromethane, pesticide residues and the like in water.

Further, a compressed carbon filter element is arranged in the third-stage filter flask and is used for deeply adsorbing substances harmful to human bodies, such as different colors, peculiar smell, residual chlorine and the like in water.

Further, the water-saving water purification equipment further comprises a water inlet electromagnetic valve, wherein the water inlet electromagnetic valve is fixed on the horizontal plate surface of the hanging plate and connected between the water outlet of the first-stage filter flask and the water inlet of the second-stage filter flask, and is used for controlling the water channel of the water-saving water purification equipment to be opened and closed.

Further, the water-saving water purification equipment further comprises a raw water inlet pipe, one end of the raw water inlet pipe is connected with the water inlet of the first-stage filter flask, and the other end of the raw water inlet pipe is connected with an upper water pipe and used for flowing raw water into the water-saving water purification equipment.

Further, the raw water inlet pipe is provided with a manual ball valve for controlling the raw water inlet pipe to supplement raw water and preventing overflow caused by excessive raw water in the waterway of the water-saving water purifying device.

Further, the water-saving water purification equipment further comprises a high-voltage switch, wherein the high-voltage switch is fixed on the horizontal plate surface of the hanging plate and is connected with a check valve of the RO membrane shell water purification port, and the high-voltage switch is used for controlling the opening and closing of a circuit system of the water-saving water purification equipment.

Further, the water-saving water purifying device further comprises a water purifying outlet pipe, wherein the water purifying outlet pipe is connected with the high-voltage switch and used for letting purified water flow out.

Preferably, the water-saving water purifying device further comprises a purified water tank connected with the purified water outlet pipe for storing purified water.

Preferably, the water-saving water purifying device further comprises a water purifying tank water supplementing valve, wherein the water purifying tank water supplementing valve is connected between the water purifying tank and the water purifying water outlet pipe, and when the water purifying tank is not full, the water-saving water purifying device is controlled to supplement water for the water purifying tank.

Preferably, the water-saving water purification device further comprises a water purification pressure barrel, wherein the water purification pressure barrel is connected between the high-pressure switch and the water purification water outlet pipe by using a tee joint and is used for storing purified water, balancing water quantity and pressure, reducing the use frequency of the water-saving water purification device and prolonging the service life.

Preferably, the water-saving water purifying device further comprises a rear activated carbon, wherein the rear activated carbon is T33 activated carbon, the rear activated carbon is fixed with the RO membrane shell by using a two-way pipe clamp, and the water inlet end of the rear activated carbon is connected between the high-voltage switch and the water purifying pressure barrel by using a tee joint and is used for adjusting the PH value of purified water and improving the taste.

By adopting the technical scheme, the utility model has the following beneficial effects:

According to the water-saving water purifying equipment provided by the utility model, the circulation timing controller is used for setting and adjusting the opening and closing time length of the water-saving electromagnetic valve according to the quality of raw water purification, so that the wastewater discharge amount is adjusted, the wastewater is secondarily purified, the wastewater discharge is reduced on the premise of reaching the water purifying standard, the water is saved, and the environment is protected.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a water-saving water purifying apparatus according to embodiment 1 of the present utility model;

fig. 2 is a plan view of the water-saving type water purifying apparatus shown in fig. 1;

fig. 3 is a left side view of the water-saving type water purifying apparatus shown in fig. 1;

FIG. 4 is a schematic view of an RO membrane filter unit of the water saving type water purifying apparatus shown in FIG. 1;

FIG. 5 is a schematic view showing a connection manner of water saving parts of the water saving type water purifying apparatus shown in FIG. 1;

FIG. 6 is a schematic diagram of a connection mode of a front three-stage filter flask of the water-saving water purifying device shown in FIG. 1;

Fig. 7 is a schematic view of a first stage filter flask of the water-saving type water purification apparatus shown in fig. 1;

Fig. 8 is a schematic view of a second stage filter flask of the water-saving type water purification apparatus shown in fig. 1;

Fig. 9 is a schematic view of a third stage filter flask of the water-saving type water purification apparatus shown in fig. 1;

fig. 10 is a schematic diagram of a water-saving water purifying apparatus according to embodiment 2 of the present utility model;

FIG. 11 is a schematic view of a fresh water tank of the water-saving type water purification apparatus shown in FIG. 10;

fig. 12 is a schematic view of a water-saving water purifying apparatus according to embodiment 3 of the present utility model;

fig. 13 is a schematic view of a nanofiltration membrane filtration unit of the water-saving type water purification apparatus shown in fig. 12.

Reference numerals:

1-a raw water inlet pipe; 101-a manual ball valve; 2-a first stage filter flask; 201-PP cotton filter element; 202-a first stage filter flask water inlet; 203-a first stage filter flask water outlet; 3-a second stage filter flask; 301-an activated carbon filter element; 302-a second stage filter flask water inlet; 303-a second-stage filter flask water outlet; 4-third stage filter flask; 401-compressed carbon cartridge; 402-a third stage filter flask water inlet; 403-third stage filter flask water outlet; 404-third stage filter flask tee; 5-RO membrane shell; 501-a filter element; 502-RO membrane shell water inlet; 503-RO membrane shell waste water port; 504-RO membrane shell water purifying mouth; 505-water purifying port check valve; 6-hanging plates; 601-pipe clamp; 701-a water-saving electromagnetic valve; 702—a cycle timing controller; 703-a return tube; 704-a return line check valve; 711-a return pipe tee; 8-a water inlet electromagnetic valve; 9-a booster pump; 10-a waste water ratio electromagnetic valve; 11-a drain pipe; 12-high voltage switch; 13-a purified water outlet pipe; 14-a purified water pressure barrel; 141-a three-way joint of a water purifying pressure barrel; 15-post activated carbon; 151-two-way pipe clamps; 152-a rear activated carbon tee; 16-nanofiltration membrane shell; 161-nanofiltration membrane cartridge; 162-nanofiltration membrane shell water inlet; 163-nanofiltration membrane shell waste water port; 164-nanofiltration membrane shell water purifying port; 17-a clean water tank; 171-water purifying tank water replenishing valve.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Aiming at the problems that the existing water purifying equipment can waste a large amount of wastewater with lower TDS value while obtaining purified water meeting the water purifying standard under the condition that the TDS of raw water is lower and does not accord with the concepts of saving water and sustainable development, the application provides a water saving component which is arranged between an RO membrane filtering component and a drain pipe and is used for controlling the wastewater to be discharged and flow back into the RO membrane filtering component according to the TDS value of raw water so as to save water.

The utility model is further illustrated with reference to specific embodiments.

Example 1

As shown in fig. 1 to 9, a water-saving water purifying apparatus provided in this embodiment includes: a hanging plate 6, an RO (reverse osmosis) membrane filter unit, a water saving unit and a drain pipe 11.

The hanging plate 6 is L-shaped and is used for fixing all parts of the water-saving water purifying equipment; the RO membrane filtering component is fixed on the vertical plate surface of the hanging plate 6 by using a pipe clamp 601; the water-saving component is fixed on the horizontal plate surface of the hanging plate 6, is connected between the RO membrane filtering component and the drain pipe 11 and is used for controlling the wastewater to be discharged and flow back into the RO membrane filtering component; one end of the drain pipe 11 is connected with the water-saving part, and the other end is inserted into a sewer for discharging waste water.

In this embodiment, the RO membrane filtration component comprises: a filter cartridge 501 and an RO membrane shell 5. The filter element 501 is an RO membrane and is arranged in the RO membrane shell 5 and is used for removing bacteria, viruses, heavy metals and other organic impurities in water; the RO membrane shell 5 is provided with the cap, with RO membrane shell 5 uses threaded connection, cap one end is provided with a water inlet 502, and the other end is provided with a water purification mouth 504 and a waste water mouth 503, and the raw water passes through the water inlet 502 of RO membrane shell 5 flows in, filters through the filter core 501 and separates into water purification and waste water, and the water purification is followed the water purification mouth 504 of RO membrane shell 5 flows out, and the waste water is followed the waste water mouth 503 of RO membrane shell flows out. The water purifying port 504 of the RO membrane housing 5 is provided with a check valve 505 for preventing the backflow of purified water.

In this embodiment, the water saving part includes: a water saving solenoid valve 701, a return line 703 and a cycle timing controller 702. The water-saving electromagnetic valve 701 is connected between the wastewater port 503 of the RO membrane housing 5 and the water drain pipe 11, and is used for controlling wastewater to be discharged and returned into the RO membrane filtering component; one end of the return pipe 703 is connected between the wastewater outlet 503 of the RO membrane housing 5 and the water saving electromagnetic valve 701 by using a tee joint 711, and the other end is connected to the water inlet 502 of the RO membrane housing 5, for returning wastewater to the RO membrane filtering unit. The cycle timing controller 702 is connected in series with the water saving solenoid valve 701 for setting the opening and closing time period of the water saving solenoid valve 701. When purifying raw water with different water qualities, the purification precision and the wastewater flow are ensured by setting and adjusting the opening and closing time length of the different water-saving electromagnetic valves 701. Set criteria for the cycle timing controller 702: purifying raw water with high TDS value, and adjusting the opening time of the water-saving electromagnetic valve 701 to be longer and the closing time to be shorter; and purifying raw water with low TDS value, and adjusting the opening time length and closing time length of the water-saving electromagnetic valve 701. The purpose is to mix the filtered waste water with low TDS value with the raw water by the reflux pipe 703, and flow into the RO membrane filter unit again for secondary purification, reduce the discharge of waste water, save water and protect environment. The return pipe 703 is provided with a non-return valve 704 for preventing raw water, which is not purified, from being discharged through the return pipe 703.

Further, the water-saving water purifying device further comprises a waste water ratio electromagnetic valve 10, wherein the waste water ratio electromagnetic valve 10 is fixed on the horizontal plate surface of the hanging plate 6, is connected between the waste water port 503 and the return pipe 703 of the RO membrane shell 5, and is used for controlling the flushing of the water-saving water purifying device and controlling the proportion of discharged waste water during water production.

The waste water ratio electromagnetic valve 10 is a normally-on electromagnetic valve, and the waste water ratio electromagnetic valve 10 is electrified for tens of seconds or minutes before the water-saving water purifying equipment starts to operate, the valve is completely opened, and the RO membrane filtering component is washed by raw water, so that the service life of the filter element 501 is prolonged; after the water-saving type water purifying device is operated for tens of seconds or minutes, the waste water is powered off compared with the electromagnetic valve 10, the valve is not completely closed, and tiny pores are reserved for discharging the waste water.

Further, the water-saving water purifying apparatus further comprises a booster pump 9, wherein the booster pump 9 is fixed on the horizontal plate surface of the hanging plate 6, and is connected between the water inlet 502 of the RO membrane housing 5 and the return pipe 703, and is used for increasing the raw water pressure flowing into the RO membrane filtering unit.

Further, the water-saving water purifying equipment further comprises a preposed three-stage filter flask, wherein the preposed three-stage filter flask is fixed below the horizontal plate surface of the hanging plate 6 and is respectively a first-stage filter flask 2, a second-stage filter flask 3 and a third-stage filter flask 4; the front three-stage filter bottles are provided with bottle caps which are in threaded connection with the front three-stage filter bottles; the top of bottle lid all is provided with a water inlet and a delivery port, first stage filter flask delivery port 203 with second stage filter flask water inlet 302 is connected, second stage filter flask delivery port 303 with third stage filter flask water inlet 402 is connected, third stage filter flask delivery port 403 uses tee bend 404 to connect between booster pump 9 and back flow 703. A PP (polypropylene melt-blown) cotton filter core 201 is arranged in the first stage filter flask 2 and is used for carrying out preliminary filtration on raw water to remove coarse particle impurities, sludge, colloid, suspended substances and the like in the water. An activated carbon filter element 301 is arranged in the second-stage filter flask 3 and is used for adsorbing suspended particles such as peculiar smell, heterochromatic, trichloromethane, pesticide residues and the like in water. The third stage filter flask 4 is internally provided with a compressed carbon filter core 401 for deeply adsorbing substances harmful to human bodies such as different colors, peculiar smell, residual chlorine and the like in water. The water-saving water purification equipment further comprises a water inlet electromagnetic valve 8, wherein the water inlet electromagnetic valve 8 is fixed on the horizontal plate surface of the hanging plate 6, is connected between the first-stage filter flask water outlet 203 and the second-stage filter flask water inlet 302 and is used for controlling the water-saving water purification equipment to be opened and closed in a waterway.

When the water-saving water purifying equipment is used for preparing water, the water inlet electromagnetic valve 8 is electrified, and the valve is opened; raw water flows in from the first-stage filter flask water inlet 202, passes through the PP cotton filter element filter 201, and flows from the first-stage filter flask water outlet 203 to the second-stage filter flask water inlet 302; then, the water flows in from the second-stage filter flask water inlet 302, passes through the activated carbon filter cartridge filter 301, and flows from the second-stage filter flask water outlet 303 to the third-stage filter flask water inlet 402; then, the filtered water flows in from the third-stage filter flask water inlet 402, passes through the compressed carbon filter cartridge filter 401 and flows to the booster pump 9 from the third-stage filter flask water outlet 403;

On the basis of the above technical solution, more preferably, the water-saving water purification device further includes a raw water inlet pipe 1, one end of the raw water inlet pipe 1 is connected with the first stage filter flask water inlet 202, and the other end is connected with a water supply pipe, so as to allow raw water to flow into the water-saving water purification device. The raw water inlet pipe 1 is provided with a manual ball valve 101 for controlling the raw water inlet pipe 1 to supplement raw water and preventing overflow caused by excessive raw water in the waterway of the water-saving water purifying device.

In this embodiment, the water-saving water purification apparatus may further include a high-voltage switch 12, where the high-voltage switch 12 is fixed on the horizontal plate surface of the hanging plate 6, and is connected to the check valve 505 of the RO membrane shell water purifying port, and is used for opening and closing the circuit system of the water-saving water purification apparatus.

And the water-saving water purifying device further comprises a water purifying outlet pipe 13, wherein the water purifying outlet pipe 13 is connected with the high-voltage switch 12 and is used for enabling the purified water to flow out of the water-saving water purifying device.

The utility model has the beneficial effects that:

The water-saving water purifying equipment provided by the utility model can be used for adjusting the opening and closing time length of the water-saving electromagnetic valve by using the circulation timing controller according to the quality of purified raw water, so that the wastewater discharge amount is adjusted, part of wastewater is secondarily purified, the wastewater discharge is reduced on the premise of reaching the water purifying standard, the water is saved, and the environment is protected.

Example 2

This embodiment is substantially the same as embodiment 1 except that:

As shown in fig. 10 and 11, in the present embodiment, the water-saving type water purifying apparatus further includes a purified water tank 17, and the purified water tank 17 is connected to the purified water outlet pipe 13 for storing purified water.

The water-saving type water purifying device further comprises a water purifying tank water supplementing electromagnetic valve 171, wherein the water purifying tank water supplementing electromagnetic valve 171 is connected between the water purifying tank 17 and the water purifying water outlet pipe 13, and when the water purifying tank 17 is not full of water, the water-saving type water purifying device is controlled to supplement water for the water purifying tank 17.

The water-saving water purifying device further comprises a water purifying pressure barrel 14, wherein the water purifying pressure barrel 14 is connected between the high-voltage switch 12 and the water purifying outlet pipe 13 by using a tee joint 141 and is used for storing purified water, balancing water quantity and pressure, avoiding frequent opening of the high-voltage switch 12 and frequent water supplementing of the water purifying tank water supplementing valve 171, and prolonging service life.

Example 3

This embodiment is substantially the same as embodiment 2 except that:

In this embodiment, as shown in fig. 12 and 13, the RO membrane filtration element is replaced with a nanofiltration membrane element. The nanofiltration membrane filtration component comprises: nanofiltration membrane cartridge 161 and nanofiltration membrane housing 16. The nanofiltration membrane filter core 161 is disposed inside the nanofiltration membrane shell 16, and is used for filtering out chemical pollutants such as antibiotics, hormones, pesticides, petroleum, detergents, heavy metals, algae toxins and the like, and retaining beneficial minerals; the nanofiltration membrane shell 16 is provided with a shell cover, the shell cover is in threaded connection with the nanofiltration membrane shell 16, one end of the shell cover is provided with a water inlet 162, the other end of the shell cover is provided with a water purifying port 164 and a waste water port 163, raw water flows in through the water inlet 162 of the nanofiltration membrane shell and is filtered and separated into purified water and waste water through the nanofiltration membrane filter core 161, the purified water flows out from the water purifying port 164 of the nanofiltration membrane shell, and the waste water flows out from the waste water port 163 of the nanofiltration membrane shell. The water purifying port 164 of the nanofiltration membrane shell is provided with a check valve 505 for preventing the backflow of the purified water. In this embodiment, the nanofiltration membrane shell 16 is substantially identical to the RO membrane shell 5, and thus the nanofiltration membrane shell 16 is connected to other components in the same manner as in embodiment 1.

The water-saving water purifying device further comprises a rear activated carbon 15, wherein the rear activated carbon 15 is T33 activated carbon, the rear activated carbon is fixed with the nanofiltration membrane shell 16 by using a bidirectional pipe clamp 151, and the water inlet end of the rear activated carbon is connected between the high-voltage switch 12 and the water purifying pressure barrel 14 by using a tee joint 152 and is used for adjusting the PH value of purified water and improving the taste.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. A water-saving type water purification apparatus, comprising: hanging plate, RO membrane filter unit, water-saving unit and drain pipe;

2. A water-saving type water purification apparatus as claimed in claim 1, wherein the RO membrane filtration means comprises: a filter element and an RO membrane shell;

the filter element is arranged in the RO membrane shell and is used for filtering raw water;

The RO membrane shell is characterized in that one end of the RO membrane shell is provided with a water inlet, the other end of the RO membrane shell is provided with a water purifying port and a waste water port, raw water flows in through the water inlet of the RO membrane shell and is filtered and separated into purified water and waste water through the filter element, the purified water flows out from the water purifying port of the RO membrane shell, and the waste water flows out from the waste water port of the RO membrane shell.

3. A water-saving water purification apparatus according to claim 2, wherein the water-saving means comprises: a water-saving electromagnetic valve, a return pipe and a circulation timing controller;

one end of the return pipe is connected between the waste water port of the RO membrane shell and the water-saving electromagnetic valve by using a tee joint, and the other end of the return pipe is connected with the water inlet of the RO membrane shell and is used for returning waste water into the RO membrane filtering component;

The circulation timing controller is connected with the water-saving electromagnetic valve in series and is used for setting the opening and closing time length of the water-saving electromagnetic valve.

4. A water-saving type water purification apparatus as claimed in claim 3, wherein the return pipe is provided with a check valve for preventing raw water from being discharged through the return pipe.

5. A water-saving type water purification apparatus according to claim 3, further comprising a waste water ratio solenoid valve fixed on a horizontal plate surface of the hanging plate, connected between a waste water port of the RO membrane housing and a return pipe, for controlling flushing of the water-saving type water purification apparatus, and controlling a ratio of discharged waste water in water production.

6. A water-saving type water purification apparatus according to claim 3, further comprising a booster pump fixed to a horizontal plate surface of the hanging plate, connected between the water inlet of the RO membrane cartridge and the return pipe, for increasing a water pressure of raw water flowing into the RO membrane filtration unit.

7. A water-saving type water purification apparatus as claimed in claim 6, further comprising a front three-stage filter flask, wherein the front three-stage filter flask is fixed under the horizontal plate surface of the hanging plate, and is a first-stage filter flask, a second-stage filter flask and a third-stage filter flask respectively;

The front three-stage filter flask is provided with a water inlet and a water outlet, the water outlet of the first-stage filter flask is connected with the water inlet of the second-stage filter flask, the water outlet of the second-stage filter flask is connected with the water inlet of the third-stage filter flask, and the water outlet of the third-stage filter flask is connected between the booster pump and the return pipe by using a tee joint.

8. A water-saving type water purification apparatus as claimed in claim 7, wherein a PP cotton filter element is arranged in the first stage filter flask for removing particulate matter impurities in water.

9. A water-saving type water purification apparatus as claimed in claim 7, wherein an activated carbon filter element is arranged in the second stage filter flask for adsorbing peculiar smell and color in water.

10. A water-saving type water purification apparatus as claimed in claim 7, wherein a compressed carbon filter element is provided in the third stage filter flask for adsorbing harmful substances in water to the human body.