CN112607887A

CN112607887A - Water purification system based on forward osmosis

Info

Publication number: CN112607887A
Application number: CN202011461150.4A
Authority: CN
Inventors: 毕宝艺; 王维迪
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-04-06

Abstract

The invention discloses a water purification system based on forward osmosis, which relates to the field of water purification and aims at solving the problems that the traditional reverse osmosis water purification system needs large water pressure and consumes high energy, and the impact pressure of the large water pressure on a filter membrane is increased, so that the service life of the filter membrane is short. The water-saving water-making device has a novel structure, pure water in raw water is filtered and extracted through the forward osmosis filtering piece, the water efficiency is high, the impact pressure on the filtering membrane is low through the forward osmosis filtering with concentration difference, the service life of the filtering membrane is long, in addition, in the water-making process, the water making is carried out without large water pressure, the energy consumption is low, and the resources are saved.

Description

Water purification system based on forward osmosis

Technical Field

The invention relates to the field of water purification, in particular to a water purification system based on forward osmosis.

Background

Forward osmosis refers to a process in which water flows from a higher water chemical potential (or lower osmotic pressure) side region to a lower water chemical potential (or higher osmotic pressure) -side region through a permselective membrane, and unlike reverse osmosis which requires high pressure, forward osmosis utilizes a difference in concentration of a solution, i.e., water flows from a low concentration solution to a high concentration solution, and in which no external force is required for the flow of water. At present, in a water purification system, a reverse osmosis principle is generally adopted for water purification and water filtration, in a reverse osmosis water purification process, increased water pressure is generally needed, so that energy consumption is high, during filtration under high water pressure, impulsive force pressure on a filtering membrane is high, the service life of the filtering membrane is short, and therefore a water purification system based on forward osmosis is designed to solve the problems.

Disclosure of Invention

The water purification system based on forward osmosis provided by the invention solves the problems that the traditional reverse osmosis water purification system needs large water pressure and consumes high energy, and the impact pressure of the large water pressure on a filter membrane is increased, so that the service life of the filter membrane is short.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a water purification system based on just permeating, includes the inlet tube, be connected with the fibre filter core on the inlet tube, be connected with circulating water pump on the fibre filter core, the last forward osmosis filter piece that is connected with of circulating water pump, be connected with on the forward osmosis filter piece and draw liquid storage spare and low pressure water pump, draw and be provided with between liquid storage spare and the low pressure water pump and filter piece and backward flow solenoid valve, and be connected with pure water tank on the filtration piece.

Preferably, the positive penetration filter piece is connected with a waste water pipe, and the waste water pipe is provided with a waste water electromagnetic valve.

Preferably, be connected with the waste pipe on the just permeating filter piece, and waste pipe and inlet tube all set up on raw water tank, and the activity sets up between raw water tank and inlet tube, the waste pipe.

Preferably, the inside of drawing liquid storage piece is provided with the drawing liquid, and the drawing liquid includes macromolecule water-absorbing material.

Preferably, the filtering element is one of a reverse osmosis filter element, a nanofiltration membrane and a UF ultrafiltration membrane.

Preferably, be connected with the protecting film pipe on the pure water tank, and the other end of protecting film pipe is connected between just permeating and filtering piece and low pressure water pump, is connected with the pure water protecting film valve on the protecting film pipe, be provided with between just permeating and filtering piece and the low pressure water pump and draw liquid feed liquor valve.

Preferably, a floating ball is arranged inside the raw water tank, and a water level alarm is fixed outside the raw water tank.

The invention has the beneficial effects that: the invention filters and extracts the pure water moisture in the raw water through the forward osmosis filtering piece, the water efficiency is higher, the impact pressure to the filtering membrane is smaller through the forward osmosis filtering with concentration difference, the service life of the filtering membrane is longer, in addition, in the water making process, water making is carried out without larger water pressure, the energy consumption is less, the resources are saved, in addition, the filtering piece is soaked in the pure water through the membrane protecting pipe connected on the pure water tank and the pure water protecting membrane, the filtering piece is prevented from being deposited and crystallized by macromolecular absorption liquid on the filtering piece, and the service life of the filtering piece is further prolonged.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of another embodiment of fig. 1.

FIG. 3 is a schematic structural view of an embodiment of the principle of adding a pure water protective film in FIG. 1.

FIG. 4 is a schematic structural view of an embodiment of the principle of adding a pure water protective film in FIG. 2.

Fig. 5 is a schematic structural view of the inside of the raw water tank of fig. 2.

Fig. 6 is a diagram showing the open/close states of the circulating water pump, the return solenoid valve, and the like at different times in fig. 3.

Reference numbers in the figures: 1. a fiber filter element; 2. a water circulating pump; 3. a forward osmosis filter; 4. a drawing liquid storage member; 5. a low-pressure water pump; 6. a filter member; 7. a return solenoid valve; 8. a pure water tank; 9. a wastewater solenoid valve; 10. a raw water tank; 101. a floating ball; 102. a water level alarm; 11. a pure water membrane protecting valve; 12. liquid inlet valve for sucking liquid.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-6, a water purification system based on forward osmosis, includes the inlet tube, is connected with fiber filter 1 on the inlet tube, is connected with circulating water pump 2 on the fiber filter 1, is connected with forward osmosis filter 3 on the circulating water pump 2, is connected with on the forward osmosis filter 3 and draws liquid storage 4 and low pressure water pump 5, draws and is provided with between liquid storage 4 and the low pressure water pump 5 and filters piece 6 and backward flow solenoid valve 7, and is connected with pure water tank 8 on filtering piece 6.

Referring to fig. 1 and 3, a wastewater pipe is connected to the forward osmosis filter element 3, and a wastewater solenoid valve 9 is arranged on the wastewater pipe, so that wastewater filtered from raw water in the forward osmosis filter element 3 can be discharged through the on-off control of the wastewater solenoid valve on the wastewater pipe, and the wastewater discharge operation is convenient.

Referring to fig. 2 and 4, the forward osmosis filter member 3 is connected with a waste pipe, the waste pipe and the water inlet pipe are both arranged on the raw water tank 10, and the raw water tank 10 is movably arranged between the water inlet pipe and the waste pipe, so that the device is convenient to use by connecting the raw water tank 10 with an external raw water source under the condition of no external water source pipe through the raw water tank 10.

The inside of the drawing liquid storage member 4 is provided with drawing liquid, and the drawing liquid comprises macromolecule water-absorbing substances.

The filtering element 6 is one of a reverse osmosis filter element, a nanofiltration membrane and a UF ultrafiltration membrane.

Refer to fig. 3 and 4, be connected with the protecting membrane pipe on the pure water tank 8, and the other end of protecting membrane pipe is connected between forward osmosis filter 3 and low pressure water pump 5, be connected with pure water protecting membrane valve 11 on the protecting membrane pipe, be provided with between forward osmosis filter 3 and the low pressure water pump 5 and draw liquid feed liquor valve 12, setting through the protecting membrane pipe, make the pure water among the pure water tank 8 flow backward to filter in 6, thereby make and filter 6 at the stop work time, soak in the pure water, thereby avoid filtering inside the deposit crystallization that has the macromolecule water-absorbing object, increase its life.

Referring to fig. 5, a float 101 is disposed inside the raw water tank 10, and a water level alarm 102 is fixed outside the raw water tank 10, so that when the raw water tank 10 is used, and when the float 101 and the alarm 102 are used in cooperation with each other, a user can be reminded to replace raw water when the water level in the raw water tank 101 is low, and convenience in use can be improved.

Example one

Referring to fig. 1 and 6, when water is produced, the present invention opens a circulating water pump 2, a low pressure water pump 5, and a draw solution inlet valve 12, connects a water inlet pipe at one side of a fiber filter element 1 to a household water pipe or other water sources, primarily filters a raw water source through the fiber filter element 1, sends the raw water into a forward osmosis filter element 3 through the circulating water pump 2, and passes through a draw solution storage element 4 connected to the forward osmosis filter element 3 to introduce a macromolecular draw solution into the forward osmosis filter element 3, through a concentration difference between the draw solution and the raw water, water molecules in the raw water are extracted by the draw solution in a forward osmosis manner, and the draw solution of water is extracted into a filter element 6 through the low pressure water pump 5, and the macromolecular draw solution is separated from pure water through the filtration of the filter element 6, and opens a backflow electromagnetic valve 7 to make the separated draw solution flow back to the draw solution storage element 4, the pure water flows into in the pure water tank 8, realize the extraction of the pure water in the former aquatic, this process, just draw moisture content through the effect of permeating through the concentration difference, water efficiency is higher, and just the inside filtration membrane of 3 inside filtration filter members of infiltration filter does not have great impact force, make its life longer, and circulating water pump is when the raw water transportation, only need carry the raw water in the filtration filter members 3 of infiltration filter members, need not great water pressure, and when drawing the filtration separation of liquid and pure water, it absorbs water for the macromolecule material to draw the liquid, when it filters the separation with the pure water, also need not great water pressure, consequently this process, the power consumption is less relatively.

In addition, referring to fig. 3 and 6, after making pure water in pure water tank 10, close circulating water pump 2, low pressure water pump 5, draw liquid feed valve 12 and backward flow solenoid valve 7 and close, open pure water protecting membrane valve 11 after, open low pressure water pump 5, in letting the pure water in pure water tank 10 flow to filtering piece 6, carry out the pure water to filtering piece 6 and wash, thereby make filtering piece 6 keep in the pure water, in order to avoid filtering the condition that the inside filtration membrane of filtering piece 6 causes the filtration membrane life-span to shorten because macromolecule absorbs water deposit crystallization.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a water purification system based on just permeating, includes the inlet tube, be connected with fibre filter core (1) on the inlet tube, a serial communication port, be connected with circulating water pump (2) on fibre filter core (1), be connected with just permeating filter piece (3) on circulating water pump (2), just permeating filter and being connected with on the filter piece (3) and drawing liquid storage spare (4) and low pressure water pump (5), it filters piece (6) and backflow solenoid valve (7) to draw to be provided with between liquid storage spare (4) and low pressure water pump (5), and is connected with pure water tank (8) on filtering piece (6).

2. A water purification system based on forward osmosis according to claim 1, characterized in that a waste pipe is connected to the forward osmosis filter element (3) and a waste solenoid valve (9) is arranged on the waste pipe.

3. A water purification system based on forward osmosis according to claim 1, characterized in that a waste pipe is connected to the forward osmosis filter element (3), and the waste pipe and the inlet pipe are both arranged on the raw water tank (10), and the raw water tank (10) is movably arranged between the inlet pipe and the waste pipe.

4. A water purification system based on forward osmosis according to claim 1, where the draw solution storage (4) is internally provided with draw solution, and the draw solution comprises macromolecular water-absorbing substances.

5. A water purification system based on forward osmosis according to claim 1, wherein the filter element (6) is one of a reverse osmosis filter element, a nanofiltration membrane, a UF ultrafiltration membrane.

6. A water purification system based on forward osmosis according to claim 2 or 3, characterized in that a membrane protection pipe is connected to the pure water tank (8), the other end of the membrane protection pipe is connected between the forward osmosis filter (3) and the low pressure water pump (5), a pure water membrane protection valve (11) is connected to the membrane protection pipe, and a draw solution inlet valve (12) is arranged between the forward osmosis filter (3) and the low pressure water pump (5).

7. A water purification system based on forward osmosis according to claim 3, characterized in that the raw water tank (10) is internally provided with a floating ball (101) and the raw water tank (10) is externally fixed with a water level alarm (102).