阅读说明：本技术 反渗透冲洗装置、净水机和反渗透冲洗控制方法 (Reverse osmosis flushing device, water purifier and reverse osmosis flushing control method ) 是由 刘通 秦笃建 姚菲菲 王龙强 劳春峰 滨中克彦 于 2018-07-12 设计创作，主要内容包括：本发明公开了一种反渗透冲洗装置、净化机和反渗透冲洗控制方法,包括反渗透膜滤芯和储水桶,反渗透膜滤芯包括与进水管连接的进水口、与净水管连接的净水出口和与废水管连接的废水出口；储水桶置于净水管上方并通过管路与其连通；储水桶的上方开设有大气连通口,以使得储水桶内的净水受大气压作用经净水出口反向进入反渗透膜滤芯；在现有反渗透净水系统的基础上,在净水管路上增加了开设有大气连通口的储水桶,净水工作停止后,储水桶内的净水反向冲洗反渗透膜滤芯,使膜处于TDS值低的纯水浸泡,解决了净水机停机一段时间后反渗透膜产水侧TDS值高的技术问题,同时,反渗透膜内水中钙镁离子浓度降低,缓解了膜表面结垢问题。(The invention discloses a reverse osmosis flushing device, a purifier and a reverse osmosis flushing control method, comprising a reverse osmosis membrane filter element and a water storage barrel, wherein the reverse osmosis membrane filter element comprises a water inlet connected with a water inlet pipe, a purified water outlet connected with a purified water pipe and a wastewater outlet connected with a wastewater pipe; the water storage barrel is arranged above the water purifying pipe and is communicated with the water purifying pipe through a pipeline; an atmosphere communicating port is formed above the water storage barrel, so that purified water in the water storage barrel reversely enters the reverse osmosis membrane filter element through the purified water outlet under the action of atmospheric pressure; on current reverse osmosis water purification system's basis, increased the water storage bucket of seting up the atmosphere intercommunication mouth on the water purification pipeline, after the water purification work stops, the water purification back flush reverse osmosis membrane filter core in the water storage bucket makes the membrane be in the pure water that the TDS value is low and soaks, has solved the high technical problem of reverse osmosis membrane product water side TDS value after purifier shut down a period, and simultaneously, the internal water calcium magnesium ion concentration of reverse osmosis membrane reduces, has alleviated membrane surface scale deposit problem.)

1. The reverse osmosis flushing device comprises a reverse osmosis membrane filter element; the reverse osmosis membrane filter element comprises a water inlet connected with the water inlet pipe, a purified water outlet connected with the purified water pipe and a wastewater outlet connected with the wastewater pipe; it is characterized by also comprising a water storage barrel;

the water storage bucket is arranged above the purified water pipe and is communicated with the purified water pipe through a pipeline; an atmosphere communicating port is formed above the water storage barrel, so that purified water in the water storage barrel reversely enters the reverse osmosis membrane filter element through the purified water outlet under the action of atmospheric pressure.

2. The reverse osmosis flushing device according to claim 1, wherein a back flush solenoid valve is connected to a pipeline between the water storage barrel and the purified water pipe; the waste water pipe is connected with a waste water electromagnetic valve.

3. The reverse osmosis flusher of claim 1 further comprising a booster pump connected to the water inlet pipe.

4. A water purification machine comprising a reverse osmosis flushing device according to any one of claims 1 to 3.

5. The reverse osmosis flushing control method applied to the reverse osmosis flushing device according to claim 2, comprising:

judging whether the water purification work is stopped or not; if so,

controlling or keeping the backwashing electromagnetic valve and the wastewater electromagnetic valve to be opened so that the purified water in the water storage barrel reversely enters the reverse osmosis membrane through the purified water outlet under the action of atmospheric pressure;

and after the set time, controlling to close the back washing electromagnetic valve.

6. The reverse osmosis flush control method of claim 5, wherein while controlling the backwash solenoid valve to be closed, the method further comprises:

and controlling to close the wastewater electromagnetic valve.

7. The reverse osmosis flush control method of claim 5, wherein before determining whether the water purification operation is stopped, the method further comprises:

judging whether the water storage barrel reaches a set water level or not; if the water level reaches the set water level, judging whether the water purification work is stopped; and if the water level does not reach the set water level, keeping the backwashing electromagnetic valve open, and continuously judging whether the water storage barrel reaches the set water level.

8. The reverse osmosis flushing control method according to claim 7, wherein if it is judged that the water storage tub reaches a set water level and it is judged that the water purification operation has not stopped, the back flushing solenoid valve is controlled to be closed.

Technical Field

The invention belongs to the technical field of water purification, and particularly relates to a reverse osmosis flushing device, a water purifier and a reverse osmosis flushing control method.

Background

Reverse osmosis water purification is to generate purified water by pressurizing the water inlet side so that the inlet water enters the water production side through a reverse osmosis membrane, and simultaneously, various impurities and harmful substances which cannot penetrate through the reverse osmosis membrane are discharged along with concentrated wastewater. The reverse osmosis membrane is widely applied to the water purifier due to the characteristics of fast water outlet and capability of enabling a user to drink filtered water instantly.

Currently, reverse osmosis membranes generally adopt a cross flow filtration mode: when the water purifier starts to produce water, the filtered pure water is guided into the reverse osmosis membrane internal flow guide pipe, and the wastewater is flushed and discharged along tap water at the outer side of the membrane; after the purifier shuts down, the booster pump stop work, when reverse osmosis membrane stopped filtering, still leave partial pure water and waste water in the reverse osmosis membrane spare, wherein the membrane inboard is the pure water, TDS (Total dissolved solids) value is lower, be waste water between the membrane outside and the membrane spare casing, the TDS value is higher, the membrane outside is because there is the concentration gradient difference between waste water and the pure water, along with the time extension, the membrane outside produces the two-way infiltration phenomenon, that is, the pure water is to the waste water side infiltration, waste water is to the pure water side infiltration, along with the extension of two-way infiltration time, the TDS value of membrane pure water also can gradual rise, down time is longer, membrane pure water TDS is higher, this makes a period of time after the start-up again go out water TDS value than higher, the quality of the first cup of water of start-up has been influenced.

Disclosure of Invention

The application provides a reverse osmosis flushing device, a water purifier and a reverse osmosis flushing control method, and solves the technical problem that a TDS value of a reverse osmosis membrane water production side is high after an existing water purifier stops for a period of time.

In order to solve the technical problems, the application adopts the following technical scheme:

a reverse osmosis washing device is provided, which comprises a reverse osmosis membrane filter element; the reverse osmosis membrane filter element comprises a water inlet connected with the water inlet pipe, a purified water outlet connected with the purified water pipe and a wastewater outlet connected with the wastewater pipe; also comprises a water storage barrel; the water storage bucket is arranged above the purified water pipe and is communicated with the purified water pipe through a pipeline; an atmosphere communicating port is formed above the water storage barrel, so that purified water in the water storage barrel reversely enters the reverse osmosis membrane filter element through the purified water outlet under the action of atmospheric pressure.

Furthermore, a back flush electromagnetic valve is connected on a pipeline between the water storage barrel and the purified water pipe; the waste water pipe is connected with a waste water electromagnetic valve.

Furthermore, the reverse osmosis flushing device also comprises a booster pump connected with the water inlet pipe.

A water purifier is provided, which comprises the reverse osmosis flushing device.

The reverse osmosis flushing control method is applied to a reverse osmosis flushing device, wherein the reverse osmosis flushing device comprises a reverse osmosis membrane filter element; the reverse osmosis membrane filter element comprises a water inlet connected with the water inlet pipe, a purified water outlet connected with the purified water pipe and a wastewater outlet connected with the wastewater pipe; also comprises a water storage barrel; the water storage bucket is arranged above the purified water pipe and is communicated with the purified water pipe through a pipeline; an atmosphere communication port is formed above the water storage barrel, so that purified water in the water storage barrel reversely enters the reverse osmosis membrane filter element through the purified water outlet under the action of atmospheric pressure; a back flush electromagnetic valve is connected on the pipeline between the water storage barrel and the purified water pipe; the waste water pipe is connected with a waste water electromagnetic valve; the method comprises the following steps: judging whether the water purification work is stopped or not; if so, controlling or keeping the backwashing electromagnetic valve and the wastewater electromagnetic valve to be opened so that the purified water in the water storage barrel reversely enters the reverse osmosis membrane through the purified water outlet under the action of atmospheric pressure; and after the set time, controlling to close the back washing electromagnetic valve.

Further, while controlling to close the backwashing electromagnetic valve, the method further comprises: and controlling to close the wastewater electromagnetic valve.

Further, before determining whether the water purification operation is stopped, the method further includes: judging whether the water storage barrel reaches a set water level or not; if the water level reaches the set water level, judging whether the water purification work is stopped; and if the water level does not reach the set water level, keeping the backwashing electromagnetic valve open, and continuously judging whether the water storage barrel reaches the set water level.

And further, if the water storage barrel is judged to reach the set water level and the water purification work is judged not to stop, the backwashing electromagnetic valve is controlled to be closed.

Compared with the prior art, the application has the advantages and positive effects that: in the reverse osmosis flushing device, the water purifier and the reverse osmosis flushing control method provided by the application, the water storage barrel is arranged above the water purifying pipe connected with the water purifying outlet of the reverse osmosis membrane filter element, the water storage barrel is communicated with the purified water pipe through a pipeline, and the upper part of the water storage barrel is provided with an atmosphere communicating port, when the water purification work stops, the back flush electromagnetic valve and the waste water electromagnetic valve are controlled or kept to be opened, on one hand, the permeation pressure difference caused by the concentration gradients at the inner side and the outer side of the reverse osmosis membrane enables a certain permeation pressure to exist at the inner side and the outer side of the reverse osmosis membrane, so that the purified water naturally permeates to the waste water end to realize the balance of the concentration gradients at the two sides of the membrane, under the action of the osmotic pressure difference, the purified water in the water storage barrel is communicated with the atmosphere through the atmosphere communication port, the purified water in the water storage barrel flows back to the reverse osmosis membrane filter element under the action of atmospheric pressure, and passes through the reverse osmosis membrane from the pure water side to the outer side of the membrane, so that the reverse osmosis membrane is flushed; on the other hand, after the water purification work is stopped, the wastewater is continuously discharged through the wastewater electromagnetic valve under the action of the residual pressure of the booster pump, at the moment, a pipeline at the wastewater end of the reverse osmosis membrane is emptied, so that a certain degree of negative pressure is formed between the reverse osmosis membrane and the shell of the membrane part, a siphon effect is formed in the negative pressure area, the pure water in the water storage barrel is sucked back, and the pure water passes through the reverse osmosis membrane from the inner side of the reverse osmosis membrane to the outer side of the reverse osmosis membrane, so; the backwashing water assembles in the membrane outside and outside waste water pipe discharge membrane, and the TSD value of membrane outside waste water reduces, after setting for the time, closes waste water solenoid valve and backwashing solenoid valve for the membrane inboard outside is all soaked by the pure water of lower TDS value, makes the first cup of water that flows out after starting up once more for the pure water that the TDS value is low, has solved the high technical problem of reverse osmosis membrane product water side TDS value after current purifier shut down a period of time.

Meanwhile, the concentration of calcium and magnesium ions in water in the reverse osmosis membrane is reduced, the problem of scaling on the surface of the membrane is relieved, and the service life of the reverse osmosis membrane is prolonged.

Other features and advantages of the present application will become more apparent from the detailed description of the embodiments of the present application when taken in conjunction with the accompanying drawings.

Drawings

FIG. 1 is a block diagram of a reverse osmosis flush apparatus as set forth in the present application;

FIG. 2 is a method flow diagram of a reverse osmosis flush control method as set forth herein.

Detailed Description

The following describes embodiments of the present application in further detail with reference to the accompanying drawings.

The reverse osmosis flushing device provided by the application comprises a reverse osmosis membrane filter element 11 as shown in figure 1; the reverse osmosis membrane filter element 1 comprises a water inlet 11 connected with the water inlet pipe 2, a purified water outlet 12 connected with the purified water pipe 3 and a wastewater outlet 13 connected with the wastewater pipe 4; also comprises a water storage barrel 5; the water storage bucket 5 is arranged above the purified water pipe 3 and is communicated with the purified water pipe 3 through a pipeline 6; an atmosphere communicating port 51 is formed above the water storage barrel 5, so that purified water in the water storage barrel 5 can reversely enter the reverse osmosis membrane filter element 1 through the purified water outlet 12 under the action of atmospheric pressure.

A back-flushing electromagnetic valve 7 is connected on a pipeline 6 between the water storage barrel 5 and the purified water pipe 3; the waste water pipe 4 is connected with a waste water electromagnetic valve 8. The water inlet pipe 2 is connected with a booster pump 9.

The operation of the reverse osmosis flushing device proposed above applied to a water purification system will be described in two embodiments.