CN207435106U - Water cleaning systems - Google Patents

Abstract

The utility model discloses a water purification system, which comprises: a membrane filter element, which is respectively connected with a raw water pipe, a pure water pipe and a waste water pipe; a water pump, which is installed on the raw water pipe; a waste water flushing valve, which is installed on the waste water pipe; a waste water return valve , the water inlet end is connected with the waste water pipe between the membrane filter element and the waste water flushing valve, and the water outlet end is connected with the raw water pipe on the water inlet side of the water pump; the first valve body is installed on the raw water pipe between the water pump and the membrane filter element ; the air valve communicates with the raw water pipe between the first valve body and the membrane filter element; and the second valve body communicates with the raw water pipe between the water pump and the first valve body at its water inlet end and communicates with the drain pipe at its outlet end ; After the water purification system finishes water production, close the first valve body and the waste water flushing valve, open the waste water return valve, the air valve and the second valve body, and turn on the water pump, so that the raw water and waste water in the membrane filter element are drawn out. Such setting ensures the water quality of the first cup of clean water produced by the water purification system each time.

Description

water purification system

technical field

The utility model relates to the technical field of water purification, in particular to a water purification system.

Background technique

The problem of drinking water is a matter of great concern to the public. It is an indisputable fact that there are many substances that are not conducive to health in the water. This is also the main reason why people's awareness of healthy drinking water has been strengthened, and it is also the root of the hot water purification equipment market.

The existing water purification equipment mainly relies on the membrane filter element to filter the raw water. However, when the water purification equipment is in the standby state, there will be raw water, waste water and pure water in the membrane filter element at the same time, and the TDS concentration of the raw water and waste water should be Much higher than the TDS of pure water, if the water purification equipment is in the standby state for a long time, this will cause the ions in the raw water and wastewater to diffuse into the pure water, which will cause the next time the water purification equipment is turned on to take pure water , the TDS concentration of the first cup of pure water is relatively high, which affects the user experience.

Utility model content

The main purpose of the utility model is to propose a water purification system, aiming at improving the water quality of the first cup of pure water produced by the water purification system.

In order to achieve the above object, a kind of water purification system proposed by the utility model comprises:

The membrane filter element has a raw water port connected to the raw water pipe, a pure water port connected to the pure water pipe, and a waste water port connected to the waste water pipe;

A water pump installed on the raw water pipe;

a waste water flushing valve installed on the waste water pipe;

Waste water backflow valve, its water inlet end communicates with the waste water pipe between the membrane filter element and the waste water flushing valve, and its water outlet end communicates with the raw water pipe on the water inlet side of the water pump;

The first valve body is installed on the raw water pipe between the water pump and the membrane filter element;

an air valve communicated with the raw water pipe between the first valve body and the membrane filter element; and,

The second valve body, its water inlet end communicates with the raw water pipe between the water pump and the first valve body, and its water outlet end communicates with the drain pipe;

After the water purification system finishes producing water, close the first valve body and waste water flushing valve, open the waste water return valve, air valve and second valve body, and turn on the water pump, so that the membrane filter element Both raw water and waste water inside are pumped out and discharged from the drain pipe.

Preferably, the water purification system further includes a controller and a detection device electrically connected to the controller, and the controller is also connected to the water pump, the waste water flushing valve, the waste water return valve, the first valve body, The air valve and the second valve body are electrically connected respectively;

The detection device is used to detect the standby parameters of the water purification system;

The controller is used to trigger the water pump, the waste water flushing valve, the waste water return valve, the first valve body, the air valve and the second valve according to the detection electrical signal of the detection device after the water purification system finishes water production. The control circuit of the body is used to close the first valve body and the waste water flushing valve, open the waste water return valve, the air valve and the second valve body, and turn on the water pump.

Preferably, the detection device is a first TDS detection probe, and the first TDS detection probe is installed at the pure water port of the membrane filter element to detect the pure water TDS value in the membrane filter element in real time;

The controller is used to trigger the water pump and the waste water flushing valve after the water purification system finishes water production and when the pure water TDS value detected by the first TDS detection probe is greater than or equal to a first preset TDS value , the control circuit of the waste water backflow valve, the first valve body, the air valve and the second valve body, to close the first valve body and the waste water flushing valve, open the waste water backflow valve, the air valve and the second valve body, and Turn on the water pump.

Preferably, the detection device is a first timer, and the first timer is used to detect the standby time of the water pump;

The controller is used to trigger the water pump, waste water flushing after the water purification system finishes water production, and when the first timer detects that the standby time of the water pump is equal to or greater than a first preset time. valve, waste water return valve, first valve body, air valve and second valve body control circuit to close the first valve body and waste water flushing valve, open the waste water return valve, air valve and second valve body, And turn on the water pump.

Preferably, the water purification system further includes a third valve body, a fourth valve body, an ion exchange resin filter element, and a flow meter; wherein, the third valve body is installed on the pure water pipe, and the fourth valve body The body is arranged in parallel with the third valve body, the ion exchange resin filter element is connected in series with the fourth valve body, and the ion exchange resin filter element is arranged in parallel with the third valve body; the flowmeter is installed in the At the pure water port of the membrane filter element, to detect the amount of pure water passing through the pure water port;

The controller is also electrically connected to the third valve body, the fourth valve body and the flowmeter respectively, the controller starts water production in the water purification system, and the pure water volume detected by the flowmeter When the value is less than the preset flow value, trigger the control circuits of the third valve body and the fourth valve body to close the third valve body and open the fourth valve body; Start water production, and trigger the control circuits of the third valve body and the fourth valve body to close the fourth valve body when the pure water value detected by the flow meter is greater than or equal to the preset flow value, And open the third valve body.

Preferably, the water purification system further includes a third valve body, a fourth valve body, an ion exchange resin filter element, and a second TDS detection probe; wherein, the third valve body is installed on the pure water pipe, and the The fourth valve body is arranged in parallel with the third valve body, the ion exchange resin filter element is connected in series with the fourth valve body, and the ion exchange resin filter element is arranged in parallel with the third valve body; the second The TDS detection probe is installed at the pure water port of the membrane filter element, and is used to detect the TDS value of the pure water passing through the pure water port;

The controller is also electrically connected to the third valve body, the fourth valve body, and the second TDS detection probe, the controller starts water production in the water purification system, and detects When the pure water TDS value detected by the probe is greater than or equal to the second preset TDS value, the control circuits of the third valve body and the fourth valve body are triggered to close the third valve body and open the fourth valve body; The controller triggers the third valve body and the fourth valve body when the water purification system starts to produce water and when the pure water flow rate detected by the second TDS detection probe is less than a second preset TDS value the control circuit to close the fourth valve body and open the third valve body.

Preferably, the water purification system further includes a third valve body, a fourth valve body, an ion exchange resin filter element, and a second timer; wherein, the third valve body is installed on the pure water pipe, and the first Four valve bodies are arranged in parallel with the third valve body, the ion exchange resin filter element is connected in series with the fourth valve body, and the ion exchange resin filter element is arranged in parallel with the third valve body; the second timing The device is used to detect the working hours of the water pump;

The controller is also electrically connected to the third valve body, the fourth valve body and the second timer respectively, the controller starts water production in the water purification system, and detects when the second timer When the working time is less than or equal to the second preset time, the control circuit of the third valve body and the fourth valve body is triggered to close the third valve body and open the fourth valve body; The water purification system starts to produce water, and when the working time detected by the second timer is longer than the second preset time, the control circuits of the third valve body and the fourth valve body are triggered to close the fourth valve body, and open the fourth valve body.

Preferably, the water purification system further includes a water inlet solenoid valve, the water inlet solenoid valve is installed on the raw water pipe on the water inlet side of the water pump, and the water outlet end of the waste water return valve is connected to the water inlet solenoid valve. It communicates with the raw water pipe between the water pumps.

Preferably, the water purification system further includes a pre-filter, and the pre-filter is installed on the raw water pipe on the water inlet side of the water pump.

Preferably, the water purification system further includes a post filter element installed on the pure water pipe.

In the technical solution of the present utility model, the membrane filter element of the water purification system is respectively connected with the raw water pipe, the pure water pipe and the waste water pipe, and a water pump is set on the raw water pipe, and a waste water flushing valve is set on the waste water pipe; And the water purification system is also provided with a waste water backflow valve, a first valve body and a second valve body, wherein the water inlet end of the waste water backflow valve communicates with the waste water pipe between the membrane filter element and the waste water flushing valve, the The outlet end of the wastewater return valve communicates with the raw water pipe on the water inlet side of the water pump. The first valve body is installed on the raw water pipe between the water pump and the membrane filter element. The water inlet end of the second valve body is connected to the water pump and the first water pipe. The raw water pipe between the first valve body is connected, and the water outlet end of the second valve body is connected with the drain pipe. After the water purification system finishes producing water, close the first valve body and waste water flushing valve, open the waste water return valve, air valve and second valve body, and turn on the water pump, so that the membrane filter element Both raw water and waste water inside are pumped out and discharged from the drain pipe. It is set so that when the water purification system is on standby, there is no raw water and waste water in the membrane filter element, thereby preventing the ions in the raw water and waste water from penetrating into the pure water, resulting in the depletion of the pure water in the membrane filter element. The problem of increased concentration occurs, thereby ensuring that the pure water produced by the water purification system at any time can meet the needs of users, which is conducive to improving the experience of users.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative work.

Fig. 1 is the structural representation of an embodiment of the utility model water purification system;

Fig. 2 is the structural representation of another embodiment of the utility model water purification system;

Fig. 3 is a structural schematic diagram of another embodiment of the water purification system of the present invention.

Explanation of reference numbers:

label name label name 100 water purification system 40 second body 10 Membrane filter d drain pipe a Raw water pipe 45 first timer b pure water pipe 50 third body c waste pipe 55 Fourth body 15 water pump 60 Ion exchange resin filter 20 waste water flush valve 65 flow meter 25 waste water return valve 70 Water inlet solenoid valve 30 first valve body 75 Pre-filter 35 air valve 80 Post filter

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present utility model, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). (shown) the relative positional relationship, movement conditions, etc. between the various components, if the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. Implying their relative importance or implying the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , also not within the scope of protection required by the utility model.

In order to improve the water quality of the first cup of pure water produced by the water purification system each time, the utility model provides a water purification system, please refer to Figure 1, Figure 1 shows the water purification system of an embodiment of the utility model Schematic.

The water purification system 100 includes:

The membrane filter element 10 has a raw water port connected to the raw water pipe a, a pure water port connected to the pure water pipe b, and a waste water port connected to the waste water pipe c;

The water pump 15 is installed on the raw water pipe a;

The waste water flushing valve 20 is installed on the waste water pipe c;

Waste water backflow valve 25, its water inlet end is communicated with the waste water pipe c between described membrane filter element 10 and waste water flushing valve 20, and its water outlet end is communicated with the raw water pipe a of the water inlet side of described water pump 15;

The first valve body 30 is installed on the raw water pipe a between the water pump 15 and the membrane filter element 10;

The air valve 35 communicates with the raw water pipe a between the first valve body 30 and the membrane filter element 10; and,

The water inlet end of the second valve body 40 communicates with the raw water pipe a between the water pump 15 and the first valve body 30 , and the water outlet end communicates with the drain pipe d.

Specifically, the membrane filter element 10 has a raw water port, a pure water port, and a waste water port, wherein the raw water port is connected to a raw water pipe a, and the raw water pipe a may be a running water pipe, or a water pipe connected to other water sources. The pure water port is communicated with the pure water pipe b, so that the pure water produced by the filtration of the membrane filter element 10 can be discharged through the pure water pipe b; the waste water port is communicated with the waste water pipe c, so that the membrane filter element 10 The waste water produced by filtration can be concentratedly discharged through the waste water pipe c, and the water outlet end of the waste water pipe c can also communicate with the waste water tank, so as to facilitate the collection of waste water, and the waste water collected in the waste water tank can also be used for other purposes, This avoids the waste of water resources.

The water pump 15 is installed on the raw water pipe a, which is mainly used to pressurize the raw water in the raw water pipe a, so as to ensure that the water pressure of the raw water entering the membrane filter element 10 through the raw water pipe a is high enough , which in turn is beneficial to increase the water production speed of the membrane filter element 10 . Preferably, the water pump 15 is a frequency conversion water pump 15, since the speed of the frequency conversion water pump 15 is adjustable, this makes the water production speed of the membrane filter element 10 adjustable, that is, the user can adjust the speed of the frequency conversion water pump 15 according to demand. When the rotating speed of the frequency conversion water pump 15 is higher, the amount of raw water passing through the frequency conversion water pump 15 will be more in the same time period, so that the amount of raw water passing through the membrane filter element 10 in the same time period will increase, which will help improve the Membrane filter element 10 water production speed; when the rotating speed of described frequency conversion water pump 15 is low, the amount of raw water that passes through described frequency conversion water pump 15 in the same time period will be less, so that the water that passes through described membrane filter element 10 in the same time period The amount of raw water will be relatively small, thereby slowing down the water production speed of the membrane filter element 10, but the raw water passing through the membrane filter element 10 can be fully filtered, which is conducive to improving the utilization rate of raw water.

The waste water flushing valve 20 is installed on the waste water pipe c, and it is mainly used to control the discharge rate of waste water in the membrane filter element 10, that is to say, the opening of the waste water flushing valve 20 is adjustable. When the water purification system 100 is used in areas with better water quality, the opening of the waste water flushing valve 20 can be reduced, so that the raw water entering the membrane filter element 10 can be fully filtered; When the water purification system 100 is used in an area with poor water quality, the opening of the waste water flushing valve 20 can be increased, so that the raw water entering the membrane filter element 10 can pass through quickly, thereby avoiding mixing with the raw water. Impurities and sundries in the water are accumulated in the membrane filter element 10, thereby preventing the membrane filter element 10 from being blocked.

The waste water return valve 25 connects the waste water pipe c with the raw water pipe a, so that part of the waste water in the waste water pipe c can flow back into the raw water pipe a through the waste water return valve 25 and pass through the waste water return valve 25. The raw water pipe a re-flows into the membrane filter element 10 for further filtration. And the opening of the waste water return valve 25 can be adjusted. When the water purification system 100 is used in areas with better water quality, the opening of the waste water return valve 25 can be increased, so that the Most of the wastewater generated by the filtration of the membrane filter element 10 can flow back into the raw water pipe a through the waste water return valve 25, and enter the membrane filter element 10 again for filtration; when the water purification system 100 is used in areas with poor water quality At this time, the opening of the wastewater flushing valve 20 can be reduced, so that the wastewater containing more impurities can be reduced from flowing back into the membrane filter element 10 for re-filtering, thereby preventing the membrane filter element 10 from being blocked. The setting of the waste water return valve 25 greatly reduces the waste water discharge of the water purification system 100, which is beneficial to improve the water production rate of the water purification system 100 and reduces the waste of water resources.

The air valve 35 can be a manual valve or a solenoid valve, and when it is in an open state, it can communicate the raw water pipe a with the atmosphere.

The waste water flushing valve 20 , the waste water return valve 25 , the first valve body 30 and the second valve body 40 may be solenoid valves, manual valves or other valves, which are not specifically limited here.

After the water purification system 100 finishes water production, first close the first valve body 30 and the waste water flushing valve 20, so that the external raw water cannot enter the membrane filter element 10 through the raw water pipe a, and the membrane filter element The raw water in 10 cannot be discharged through the waste water pipe c; then open the waste water return valve 25 , the air valve 35 and the second valve body 40 , and turn on the water pump 15 . At this time, only the water path formed by the waste water pipe c, the waste water solenoid valve, the water pump 15 and the second valve body 40 is unimpeded, which makes the raw water and waste water in the membrane filter element 10 driven by the water pump 15 After passing through the waste water pipe c, the waste water solenoid valve, the water pump 15 and the second valve body 40 in sequence, it flows into the drain pipe d connected with the water outlet end of the second valve body 40, and is discharged through the drain pipe d. to the outside world. Moreover, the air valve 35 is in an open state when the water pump 15 extracts the raw water in the membrane filter element 10, so that on the one hand, the water pump 15 can smoothly extract the raw water in the membrane filter element 10. , and at the same time, it can also ensure that the external air can enter the membrane filter element 10 and fill the membrane filter element 10 . Therefore, when the water purification system 100 is on standby, there is no raw water and waste water with high concentration in the membrane filter element 10, so that the ions in the raw water and waste water are prevented from penetrating into the pure water, and the concentration of the pure water is reduced. The problem of rising occurs, thereby ensuring that the pure water produced by the water purification system 100 can meet the user's requirements at any time.

In the technical solution of the present utility model, the membrane filter element 10 of the water purification system 100 is respectively connected with the raw water pipe a, the pure water pipe b and the waste water pipe c, and a water pump 15 is arranged on the raw water pipe a, and the waste water A waste water flushing valve 20 is set on the pipe c; and the water purification system 100 is also provided with a waste water return valve 25, a first valve body 30 and a second valve body 40, wherein the water inlet end of the waste water return valve 25 is connected to the membrane The waste water pipe c between the filter element 10 and the waste water flushing valve 20 is connected, the outlet end of the waste water return valve 25 is connected with the raw water pipe a on the water inlet side of the water pump 15, and the first valve body 30 is installed on the water pump 15 and the membrane On the raw water pipe a between the filter elements 10, the water inlet end of the second valve body 40 communicates with the raw water pipe a between the water pump 15 and the first valve body 30, and the water outlet end of the second valve body 40 communicates with the drain water pipe a. tube d. After the water purification system 100 finishes water production, close the first valve body 30 and the waste water flushing valve 20, open the waste water return valve 25, the air valve 35 and the second valve body 40, and turn on the water pump 15 , so that both the raw water and waste water inside the membrane filter element 10 are drawn out and discharged from the drain pipe d. It is set so that when the water purification system 100 is on standby, there is no raw water and waste water in the membrane filter element 10, thereby preventing the ions in the raw water from penetrating into the pure water, resulting in pure water in the membrane filter element 10 The problem of increased concentration of the pure water appears, thereby ensuring that the pure water produced by the water purification system 100 can meet the needs of users at any time, which is conducive to improving the experience of users.

In addition, the utility model uses ingenious waterway design so that only one water pump 15 is used in the whole water purification system 100 to drive the raw water into the membrane filter element 10 when the water purification system 100 produces water, and at the same time, it can also be used in the water purification system 100. When the water purification system 100 finishes producing water, the raw water and waste water inside the membrane filter element 10 are pumped out by the water pump 15 . Such setting reduces the production cost of the water purification system 100 .

It should be noted that the water pump 15, the waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35 and the second valve body 40 can be opened or closed by manual control; of course, the water pump 15. The waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35 and the second valve body 40 can also be controlled to open or close by the controller; in addition, the water pump 15, the waste water flushing valve 20, One or more of the waste water return valve 25 , the first valve body 30 , the air valve 35 and the second valve body 40 can be opened or closed manually, and the others can be opened or closed by the controller.

In order to control the operation of the water purification system 100 conveniently, in an embodiment of the present utility model, the water purification system 100 further includes a controller and a detection device electrically connected to the controller. The controller may be a single-chip microcomputer, or a PWM controller, and no specific limitation is made on the controller here. The controller is also electrically connected with the water pump 15, the waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35 and the second valve body 40 respectively; The control circuits of the water pump 15 , the waste water flushing valve 20 , the waste water return valve 25 , the first valve body 30 , the air valve 35 and the second valve body 40 are electrically connected. The detection device is used to detect the standby parameters of the water purification system 100. The standby parameters of the water purification system 100 can be the standby time, the pure water quality in the membrane filter element 10, etc., which will not be discussed here. enumerate. The detection device will send the detected result to the controller as a detection electric signal, and the controller will trigger the water pump 15, the waste water flushing valve 20, and the waste water return valve according to the detection electric signal sent by the detection device. 25. The control circuit of the first valve body 30, the air valve 35 and the second valve body 40, to control the water pump 15, the waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35 and the second The opening or closing of the valve body 40.

That is, after the water purification system 100 finishes producing water and the raw water inside the membrane filter element 10 needs to be pumped out, the controller triggers the detection device after receiving the detection electrical signal. Describe the control circuit of the water pump 15, the waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35 and the second valve body 40, to control the closing of the first valve body 30 and the waste water flushing valve 20, and simultaneously Control the waste water return valve 25, the air valve 35 and the second valve body 40 to open, and turn on the water pump 15; the controller is after the water purification system 100 is finished, and the inside of the membrane filter element 10 When the raw water does not need to be drawn out, the controller triggers the water pump 15, the waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35 and the first valve body 30 after receiving the detection electrical signal from the detection device. The control circuit of the second valve body 40 is used to control the water pump 15, the waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35, and the second valve body 40 to keep closed. With such arrangement, the entire waterway of the water purification system 100 can be controlled by the controller, thereby making the water purification system 100 more intelligent and convenient for users to use.

In an embodiment of the present utility model, the detection device is a first TDS detection probe (not shown), the first TDS detection probe is installed at the pure water port of the membrane filter element 10, and is used for real-time detection of the The pure water TDS value in the membrane filter element 10.

After the water production of the water purification system 100 is completed, and when the first TDS detection probe detects that the TDS value of the pure water in the membrane filter element 10 is lower than the preset TDS value, the controller receives the After the detection electrical signal sent by the first TDS detection probe, trigger the control circuit of the water pump 15, the waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35 and the second valve body 40, to control all The water pump 15, the waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35 and the second valve body 40 all remain closed; when the water production in the water purification system 100 ends, and when the second When a TDS detection probe detects that the TDS value of the pure water in the membrane filter element 10 is equal to or greater than the first preset TDS value, the controller triggers after receiving the detection electrical signal sent by the first TDS detection probe. The control circuits of the water pump 15, the waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35 and the second valve body 40 are used to control the closing of the first valve body 30 and the waste water flushing valve 20, At the same time, the waste water return valve 25 , the air valve 35 and the second valve body 40 are controlled to be opened, and the water pump 15 is also controlled to be opened. With such setting, the raw water in the membrane filter element 10 can be extracted intelligently, which is convenient for users to use the water purification system 100 .

It should be noted that it takes a certain amount of time for the impurities in the raw water before the membrane and waste water in the membrane filter element 10 to penetrate into the pure water behind the membrane, and whether the TDS value of the pure water in the membrane filter element 10 is detected to control whether the The raw water inside the membrane filter element 10 is extracted, so that frequent extraction of the raw water inside the membrane filter element 10 can be avoided, thereby helping to reduce the waste of water resources.

In addition, it should be noted that the preset TDS value is very small, which ensures that even if the raw water in the membrane filter element 10 is not extracted, the pure water TDS value in the membrane filter element 10 will not It is too high, which is beneficial to ensure that the pure water produced by the water purification system 100 can meet the needs of users at any time.

In an embodiment of the present utility model, please refer to FIG. 2 , the detection device is a first timer 45, and the first timer 45 is used to detect the standby time of the water purification system 100. Since the standby time of the water pump 15 is equivalent to that of the water purification system 100 , the standby time of the water purification system 100 can be determined by detecting the standby time of the water pump 15 . The controller then triggers the water pump 15, the waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air The control circuit of the valve 35 and the second valve body 40 is used to control the opening or closing of the water pump 15 , the waste water flushing valve 20 , the waste water return valve 25 , the first valve body 30 , the air valve 35 and the second valve body 40 .

Specifically, when the water production of the water purification system 100 is completed, and when the first timer 45 detects that the standby time of the water pump 15 is less than the first preset time, the controller receives the first After the detection electric signal sent by a timer 45, trigger the control circuit of the water pump 15, the waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35 and the second valve body 40, to control the The water pump 15, the waste water flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35 and the second valve body 40 all remain closed; at the end of the water purification system 100, and when the first When the timer 45 detects that the standby time of the water pump 15 is equal to or greater than the first preset time, the controller triggers the water pump 15, waste water The control circuit of the flushing valve 20, the waste water return valve 25, the first valve body 30, the air valve 35 and the second valve body 40, to control the closing of the first valve body 30 and the waste water flushing valve 20, and simultaneously control the waste water backflow The valve 25, the air valve 35 and the second valve body 40 are all opened, and the water pump 15 is also controlled to be opened. Such setting can also achieve intelligent extraction of raw water and waste water in the membrane filter element 10 , thereby facilitating users to use the water purification system 100 .

It should be noted that it takes a certain amount of time for the impurities in the raw water in front of the membrane in the membrane filter element 10 to penetrate into the pure water behind the membrane, and it is determined by detecting the standby time of the water purification system 100 whether the inside of the membrane filter element 10 The raw water and waste water are drawn out, which can avoid frequent extraction of the raw water and waste water in the membrane filter element 10, thereby helping to reduce the waste of water resources.

In addition, it should be noted that the first preset duration of the water purification system 100 can be set according to the water quality conditions of the area where the water purification system 100 is used, that is, if the water purification system 100 has better water quality conditions If the water purification system 100 is used in an area with poor water quality regulation, the first preset duration of the water purification system 100 can be set longer; The first preset duration of 100 is set to be shorter.

It is worth noting that if the water purification system 100 is in the process of extracting the raw water in the membrane filter element 10 and is turned on to produce water, the controller controls the opening of the first valve body 30 and the opening of the waste water flushing valve 20, And control the second valve body 40 to close, so that the water purification system 100 switches to the water production state.

It should be noted that when the water purification system 100 is on standby for a period of time, the ions in the raw water in the membrane filter element 10 will permeate into the pure water in the membrane filter element 10, which makes the membrane filter element 10 lower The water quality of the first cup of pure water taken after turning on the machine for the first time will be poor. In order to ensure that the pure water produced by the water purification system 100 at any time can meet the needs of users.

In an embodiment of the present utility model, please refer to FIG. 3 , the water purification system 100 also includes a third valve body 50, a fourth valve body 55, an ion exchange resin filter element 60, and a flow meter 65; wherein, the first Three valve bodies 50 are installed on the pure water pipe b, the fourth valve body 55 is arranged in parallel with the third valve body 50, the ion exchange resin filter element 60 is connected in series with the fourth valve body 55, and The ion exchange resin filter element 60 is set in parallel with the third valve body 50; the flow meter 65 is installed at the pure water port of the membrane filter element 10 to detect the pure water value passing through the pure water port.

Described ion-exchange resin filter element 60, its main function is to remove the salt substance (being various anion, cation) in water, when water passes through described ion-exchange resin filter element 60, the cation in water and the anion in ion-exchange resin filter element 60 combined to generate H ions, while the anions in the water combine with the cations in the ion exchange resin filter element 60 to generate OH ions, and after H ions and OH ions are generated, they will combine with each other to form H ₂ O, thus allowing pure water to pass through When the ion exchange resin filter element is 60, its TDS will be greatly reduced, which can meet the needs of users.

The controller is also electrically connected to the third valve body 50, the fourth valve body 55 and the flow meter 65, and the controller controls the third valve body 50 according to the detection result of the flow meter 65 and the opening or closing of the fourth valve body 55. Specifically, when the water purification system 100 produces water every time, the controller will open the first valve body 30, so that raw water can flow into the membrane filter element 10 through the raw water pipe a for filtering , and the raw water in the membrane filter element 10 is filtered to form pure water, which is discharged from the pure water pipe b; When the water volume value is less than the preset water volume value, at this time, the time for the water purification system 100 to turn on the water production is relatively short, and when the pure water with a high internal concentration has not been completely discharged, the controller receives the flow rate After the electrical signal detected by meter 65, the control circuits of the third valve body 50 and the fourth valve body 55 are triggered to close the third valve body 50 and open the fourth valve body 55 at the same time, so that the membrane After the pure water produced by filtering the filter element 10 passes through the ion exchange resin filter element 60, it is discharged from the water outlet end of the pure water pipe b, because the ion exchange resin filter element 60 can reduce the salt content in the pure water, so It is ensured that the pure water produced when the water purification system 100 is turned on every time is desalinated by the ion exchange resin filter element 60, and can meet the needs of users, thereby ensuring that the water purification system 100 is at any time The pure water produced can meet the needs of users and is conducive to improving the experience of users. When the flowmeter 65 detects that the volume of pure water discharged from the pure water port of the membrane filter element 10 is greater than or equal to the preset water volume, after the controller receives the detection electrical signal from the flowmeter 65, Trigger the control circuit of the third valve body 50 and the fourth valve body 55 to close the fourth valve body 55 and open the third valve body 50 at the same time. At this time, the pure water produced by the filtration of the membrane filter element 10 directly passes through the The pure water pipe b is discharged, which prevents the ion exchange resin filter element 60 from being in working condition all the time, which is beneficial to prolong the service life of the ion exchange resin filter element 60 .

Obviously, in another embodiment of the present invention, a second TDS detection probe (not shown) may also be used to replace the flow meter 65 . Specifically, the second TDS detection probe is electrically connected to the controller, and the second TDS detection probe is installed at the pure water port of the membrane filter element 10, and is used to detect the pure water passing through the pure water port. Pure water TDS value. The controller controls the opening or closing of the third valve body 50 and the fourth valve body 55 according to the relationship between the pure water TDS value detected by the second TDS detection probe and the second preset TDS value.

Specifically, when the water purification system 100 starts to produce water, and when the second TDS detection probe detects that the pure water TDS value passing through the pure water port of the membrane filter element 10 is greater than or equal to the second preset TDS value, After the controller receives the detection electrical signal sent by the second TDS detection probe, it triggers the control circuits of the third valve body 50 and the fourth valve body 55 to control the closing of the third valve body 50, At the same time, the fourth valve body 55 is controlled to be opened. At this time, the pure water produced by the filtration of the membrane filter element 10 passes through the ion exchange resin filter element 60, and then is discharged from the water outlet of the pure water pipe b. The exchange resin filter element 60 can reduce the salt content in the pure water, which ensures that the pure water initially produced by the water purification system 100 can meet the needs of users after being desalted by the ion exchange resin filter element 60, thereby ensuring This ensures that the pure water produced by the water purification system 100 at any time can meet the needs of users, which is conducive to improving the experience of users. When the water purification system 100 starts to produce water, and when the second TDS detection probe detects that the pure water TDS value passing through the pure water port of the membrane filter element 10 is lower than the second preset TDS value, the control After receiving the detection electrical signal sent by the second TDS detection probe, the device triggers the control circuits of the third valve body 50 and the fourth valve body 55 to control the closing of the fourth valve body 55 and simultaneously control the The third valve body 50 is opened, and the pure water produced by the filtration of the membrane filter element 10 is directly discharged through the pure water pipe b, thus avoiding that the ion exchange resin filter element 60 is in working condition all the time, which is beneficial to extend the The service life of the ion exchange resin filter element 60 is described above.

In addition, in yet another embodiment of the present utility model, a second timer (not shown) may also be used to replace the flow meter 65 . Specifically, the second timer is electrically connected to the controller, and the second timer is used to detect the water production time of the water purification system 100 . It should be noted that the working time of the water pump 15 is equivalent to the water production time of the water purification system 100 , therefore, the water production time of the water purification system 100 can be determined by detecting the working time of the water pump 15 . The controller controls the opening of the third valve body 50 and the fourth valve body 55 according to the relationship between the working time of the water pump 15 detected by the second timer and the second preset time. or off.

Specifically, when the water purification system 100 starts to produce water, and when the second timer detects that the working time of the water pump 15 is less than the second preset time, the controller receives the second After the detection electrical signal sent by the timer, the control circuits of the third valve body 50 and the fourth valve body 55 are triggered to control the closing of the third valve body 50 and the opening of the fourth valve body 55 at the same time. When the pure water produced by the filtration of the membrane filter element 10 passes through the ion exchange resin filter element 60, it is discharged from the water outlet end of the pure water pipe b, because the ion exchange resin filter element 60 can reduce the water content in the pure water. salt content, thus ensuring that the pure water initially produced by the water purification system 100 can meet the needs of users after desalination by the ion exchange resin filter element 60, thereby ensuring that the water purification system 100 produces at any time Pure water can meet the needs of users and help improve user experience. When the water purification system 100 starts to produce water, and when the second timer detects that the working time of the water pump 15 is greater than or equal to the second preset time length, the controller receives the second timer After the detection electrical signal sent by the device, the control circuits of the third valve body 50 and the fourth valve body 55 are triggered to control the closing of the fourth valve body 55 and the opening of the third valve body 50 at the same time. The pure water produced by the filtration of the membrane filter element 10 is directly discharged through the pure water pipe b, which prevents the ion exchange resin filter element 60 from being in working state all the time, which is beneficial to prolong the service life of the ion exchange resin filter element 60 .

Apparently, the flow meter 65 can also be replaced by other detection devices, which will not be listed here.

In an embodiment of the present utility model, the water purification system 100 also includes a water inlet solenoid valve 70, the water inlet solenoid valve 70 is installed on the raw water pipe a on the water inlet side of the water pump 15, and the waste water is returned The water outlet end of the valve 25 communicates with the raw water pipe a between the water inlet solenoid valve 70 and the water pump 15 . When the water pump 15 pumps the raw water in the membrane filter element 10, the water inlet solenoid valve 70 can be closed, so as to prevent the external raw water from being pumped by the water pump 15 from the second valve body. 40 discharge, thereby reducing the waste of water resources. In addition, the water inlet electromagnetic valve 70 is set so that when the water purification system 100 is in a standby state, the water pipe on the water inlet side of the water pump 15 is filled with raw water, so that the water purification system 100 can be prevented from starting to produce water. , the water pump 15 appears to run idly, thereby effectively protecting the water pump 15 .

In an embodiment of the present utility model, the water purification system 100 further includes a pre-filter element 75, and the pre-filter element 75 is installed on the raw water pipe a. The pre-filter element 75 may be a PP cotton filter element, an activated carbon filter element or other filter elements with the function of pure water, which is not specifically limited here. A pre-filter element 75 is arranged before the raw water pipe a, so that the large particles of impurities in the raw water can be effectively filtered out, thereby preventing the particles of impurities in the raw water from adhering to the inside of the membrane filter element 10, causing the membrane filter element 10 to The problem of being blocked occurs. Preferably, the pre-filter element 75 is a composite filter element, which is composed of three layers of non-woven fabric, carbon fiber and PP cotton, that is, the composite filter element combines the functions of the carbon fiber filter element and the PP cotton filter element, that is, one filter element can Instead of two filter elements, the number of pre-filter elements 75 is reduced, thereby making the installation space required by the entire water purification system 100 smaller.

In an embodiment of the present utility model, the water purification system 100 further includes a post filter element 80, and the post filter element 80 is installed on the pure water pipe b. The post filter element 80 can be an activated carbon filter element, which mainly uses activated carbon as the main raw material, which can remove residual chlorine and peculiar smell in water, and at the same time improve the taste of water, thereby helping to improve user experience.

The above is only a preferred embodiment of the present utility model, and does not therefore limit the scope of the patent of the present utility model. Under the inventive concept of the present utility model, the equivalent structural transformation made by using the specification of the utility model and the contents of the accompanying drawings, or Direct/indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims (10)

1. a kind of water cleaning systems, which is characterized in that including：

Membrane filter has the raw water mouth connected with raw water tubes, the pure water mouth connected with pure water pipe and is connected with waste pipe useless The mouth of a river；

Water pump is installed on the raw water tubes；

Waste water flushing valve is installed on the waste pipe；

Return of waste water valve, the waste pipe between water inlet end and the membrane filter and waste water flushing valve connect, water outlet and institute State the raw water tubes connection of the influent side of water pump；

First valve body is installed on the raw water tubes between the water pump and membrane filter；

Air valve, the raw water tubes between first valve body and membrane filter connect；And

Second valve body, the raw water tubes between water inlet end and the water pump and the first valve body connect, and water outlet connects with drainpipe It is logical；

After the water cleaning systems terminate water processed, first valve body and waste water flushing valve are closed, opens the return of waste water Valve, air valve and the second valve body, and the water pump is opened, so that the raw water and waste water inside the membrane filter are taken out Go out, and discharged from the drainpipe.

2. water cleaning systems as described in claim 1, which is characterized in that the water cleaning systems further include controller and with institute State controller electric connection detection device, and the controller also with the water pump, waste water flushing valve, return of waste water valve, First valve body, air valve and the second valve body are electrically connected；

The detection device is used to detect the standby parameter of the water cleaning systems；

The controller is used for after the water cleaning systems terminate water processed, according to the detection electric signal of the detection device, is touched Send out water pump described, the control circuit of waste water flushing valve, return of waste water valve, the first valve body, air valve and the second valve body, to close First valve body and waste water flushing valve open the return of waste water valve, air valve and the second valve body, and open the water Pump.

3. water cleaning systems as claimed in claim 2, which is characterized in that the detection device is the first TDS detection probes, described First TDS detection probes are installed at the pure water mouth of the membrane filter, to detect the pure water TDS values in the membrane filter in real time；

The controller is used for after the water cleaning systems terminate water processed, and when the first TDS detection probes detection When pure water TDS values are more than or equal to the first default TDS values, the water pump, waste water flushing valve, return of waste water valve, first are triggered The control circuit of valve body, air valve and the second valve body to close first valve body and waste water flushing valve, opens the waste water Return valve, air valve and the second valve body, and open the water pump.

4. water cleaning systems as claimed in claim 2, which is characterized in that the detection device be the first timer, described first Timer is used to detect the standby time of the water pump；

The controller is used for after the water cleaning systems terminate water processed, and described when being detected in first timer When the standby time of water pump is equal to or more than the first preset duration, the water pump, waste water flushing valve, return of waste water valve, the are triggered The control circuit of one valve body, air valve and the second valve body to close first valve body and waste water flushing valve, is opened described useless Water return valve, air valve and the second valve body, and open the water pump.

5. water cleaning systems as claimed in claim 2, which is characterized in that the water cleaning systems further include the 3rd valve body, the 4th valve Body, ion exchange resin filter core and flowmeter；Wherein, the 3rd valve body is installed in the pure water pipe, the 4th valve Body is arranged in parallel with the 3rd valve body, and the ion exchange resin filter core is connected with the 4th valve body, and the ion Exchanger resin filter core is arranged in parallel with the 3rd valve body；The flowmeter is installed at the pure water mouth of the membrane filter, with inspection Survey the pure water water value by the pure water mouth；

The controller is also electrically connected with the 3rd valve body, the 4th valve body and flowmeter respectively, and the controller is in institute It states water cleaning systems and starts water processed, and when the pure water water value of flowmeter detection is less than preset flow value, triggering described the The control circuit of three valve bodies and the 4th valve body to close the 3rd valve body, and opens the 4th valve body；The controller is described Water cleaning systems start water processed, and when the pure water water value of flowmeter detection is greater than or equal to preset flow value, trigger institute The control circuit of the 3rd valve body and the 4th valve body is stated, to close the 4th valve body, and opens the 3rd valve body.

6. water cleaning systems as claimed in claim 2, which is characterized in that the water cleaning systems further include the 3rd valve body, the 4th valve Body, ion exchange resin filter core and the 2nd TDS detection probes；Wherein, the 3rd valve body is installed in the pure water pipe, institute The 4th valve body to be stated to be arranged in parallel with the 3rd valve body, the ion exchange resin filter core is connected with the 4th valve body, and The ion exchange resin filter core is arranged in parallel with the 3rd valve body；The 2nd TDS detection probes are installed on the membrane filtration At the pure water mouth of core, and for detecting the pure water TDS values by the pure water mouth；

The controller is also electrically connected with the 3rd valve body, the 4th valve body and the 2nd TDS detection probes respectively, the control Device processed starts water processed in the water cleaning systems, and the 2nd TDS detection probes detection pure water TDS values more than or equal to the During two default TDS values, the control circuit of the 3rd valve body and the 4th valve body is triggered, to close the 3rd valve body, and described in opening 4th valve body；The controller is when the water cleaning systems start water processed, and the pure water detected in the 2nd TDS detection probes When flow is less than the second default TDS values, the control circuit of the 3rd valve body and the 4th valve body is triggered, to close the 4th valve body, And open the 3rd valve body.

7. water cleaning systems as claimed in claim 2, which is characterized in that the water cleaning systems further include the 3rd valve body, the 4th valve Body, ion exchange resin filter core and the second timer；Wherein, the 3rd valve body is installed in the pure water pipe, and described Four valve bodies are arranged in parallel with the 3rd valve body, and the ion exchange resin filter core is connected with the 4th valve body, and described Ion exchange resin filter core is arranged in parallel with the 3rd valve body；When second timer is used to detect the work of the water pump It is long；

The controller is also electrically connected with the 3rd valve body, the 4th valve body and the second timer respectively, the controller Start water processed in the water cleaning systems, and be less than or equal to the second preset duration in the operating time of second timer detection When, the control circuit of the 3rd valve body and the 4th valve body is triggered, to close the 3rd valve body, and opens the 4th valve body；Institute It states controller and starts water processed in the water cleaning systems, and when the operating time of second timer detection is default more than second When long, the control circuit of the 3rd valve body and the 4th valve body is triggered, to close the 4th valve body, and opens the 4th valve body.

8. the water cleaning systems as described in any one in claim 1-7, which is characterized in that the water cleaning systems are further included into water Solenoid valve, the entering water electromagnetic valve are installed on the raw water tubes of the water feeding of water pump side, the water outlet of the return of waste water valve with Raw water tubes connection between the entering water electromagnetic valve and the water pump.

9. the water cleaning systems as described in any one in claim 1-7, which is characterized in that the water cleaning systems further include preposition Filter core, the preposition filter core are installed on the raw water tubes of the water feeding of water pump side.

10. the water cleaning systems as described in any one in claim 1-7, which is characterized in that after the water cleaning systems further include Filter core is put, the postposition filter core is installed in the pure water pipe.