Novel loose nanofiltration membrane assembly
By improving the structure of the water guide pipe and diaphragm, a mixing channel was formed, which solved the problem of uneven distribution of calcium and magnesium ions, achieved uniform mixing of calcium and magnesium ions in pure water, and reduced equipment costs.
Patent Information
- Application Number
- CN202422975703.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Existing reverse osmosis and nanofiltration membranes have uneven distribution of calcium and magnesium ions in the product water, requiring additional equipment for stirring, which increases costs.
A novel loose nanofiltration membrane module is designed, which is divided into an inlet chamber and an outlet chamber by a water guide pipe. A mixing channel is formed on the membrane, and the mixing channel is formed by the spacing of the adhesive coating area, so as to achieve uniform mixing of calcium and magnesium ions with pure water.
It improves the uniformity of calcium and magnesium ions mixing in pure water and reduces equipment costs.
Smart Images
Figure CN223454040U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to reverse osmosis membrane technical field especially relates to new loose nanofiltration membrane module structure improvement. BACKGROUND
[0002] The water treatment method includes physical treatment and chemical treatment. The human water treatment method has quite a lot of years history, the physical method includes using various aperture size filter material, using adsorption or blocking method, the impurity in water is excluded, the important one in adsorption method is using activated carbon adsorption, the blocking method is water through filter material, the impurity of volume is unable to pass, and then obtains relatively clean water. Reverse osmosis technology is the emerging membrane separation high technology in recent decades, it uses the reverse osmosis membrane with high selectivity, using the reverse osmosis principle of water molecule under pressure, part of raw water is pressurized through high pressure pump and passes through the reverse osmosis membrane to become desalted water, the salt and macromolecular substance in water will be concentrated on the membrane surface, and the remaining part of raw water will take away the concentrated substance along the direction parallel to the membrane to form concentrated water and discharge. This method can make the removal rate of inorganic salt, hardness ion, organic matter and bacteria in water reach 99.5% or even above, and has the advantages of simple operation, low energy consumption, low pollution and the like.
[0003] The appropriate amount of calcium and magnesium ions in drinking water is beneficial to human body, but the reverse osmosis and nanofiltration membrane have high interception rate to divalent salt ions. Therefore, only a trace amount of calcium and magnesium ions is in the produced water, and the appropriate amount of calcium and magnesium ions in the produced water can protect the equipment water production pipeline and prolong the service life. In view of the above problems, the commonly used technical method in the industry at present is to directly add calcium and magnesium ions in the produced water, and the calcium and magnesium ions in the produced water are unevenly distributed. In order to ensure the uniformity of the added ions, additional stirring equipment is needed, so that the equipment cost is greatly increased. UTILITY MODEL CONTENT
[0004] The utility model provides a new loose nanofiltration membrane module for improving the uniformity of calcium and magnesium ions in pure water and reducing equipment cost.
[0005] The technical scheme of the utility model is:
[0006] The new loose nanofiltration membrane module comprises:
[0007] The water guide pipe is provided with a partition in the inner cavity, so that the inner cavity of the water guide pipe is divided into a water inlet cavity and a water outlet cavity. The outer side of the water guide pipe is provided with a plurality of outflow holes communicating with the water inlet cavity and a plurality of inflow holes communicating with the water outlet cavity.
[0008] The utility model discloses a membrane sheet is equipped with multiple, and the front and back surface forms raw water bag and pure water bag respectively, raw water bag and pure water bag all install the water conservancy network in, the membrane back middle part of pure water bag membrane sheet is equipped with the rubbering area no.
[0009] Specifically, the membrane sheet is a reverse osmosis membrane or a nanofiltration membrane.
[0010] Specifically, the membrane sheet is wrapped by an envelope on the outside.
[0011] The envelope and the membrane sheet are provided with a waste water guide net.
[0012] Specifically, the interval between the rubbering area no. and the rubbering area no. 2 forms a mixing flow channel.
[0013] Specifically, the width of the rubbering area no. 1 is 1-3 cm.
[0014] Specifically, the interval between the rubbering area no. 1 and the rubbering area no. 2 is 2-3 cm.
[0015] Specifically, the water conservancy network in the raw water bag is a waste water guide net.
[0016] The water conservancy network in the pure water bag is a pure water guide net.
[0017] The utility model has the advantages of:
[0018] The utility model improves the structure of the water guide pipe and the membrane sheet, divides the water guide pipe into a water inlet cavity and a water outlet cavity, forms a mixing flow channel on the membrane sheet, and passes a divalent salt solution into the water guide pipe from the upper end, so that the divalent salt solution flows into the pure water bag in the membrane from the upper end of the water guide pipe, mixes with the pure water in the pure water pipe from the lower end to produce water, thereby increasing the solute content of the produced water in the membrane sheet, reducing the osmotic pressure of the concentrated water side and the pure water side of the membrane sheet, and increasing the flux. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a three-dimensional structure schematic view of the membrane element in an unfolded state,
[0020] Figure 2 is a schematic view of the water flow direction inside the nanofiltration membrane element.
[0021] In the figure, 100 is a water guide pipe, 110 is a partition, 120 is a water inlet cavity, 130 is a water outlet cavity,
[0022] 200 is a membrane sheet, 210 is a rubbering area no. 1, 220 is a rubbering area no. 2,
[0023] 300 is an envelope,
[0024] 400 is a wastewater guide net,
[0025] 500 is a clean water guide net. DETAILED DESCRIPTION
[0026] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, are for the purpose of explanation only and are not to be construed as limiting the present application.
[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0028] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0029] The present application is described below with reference to Figs. 1 and 2;
[0030] The novel loose nanofiltration membrane module comprises:
[0031] The water guide pipe 100 is provided with a partition 110 in the inner cavity, which divides the inner cavity of the water guide pipe 100 into a water inlet cavity 120 and a water outlet cavity 130; the outer side of the water guide pipe 100 is provided with a plurality of outflow holes communicating with the water inlet cavity 120, and a plurality of inflow holes communicating with the water outlet cavity 130;
[0032] The diaphragm 200 is provided with multiple pieces, and the front and back sides form a raw water bag and a clean water bag respectively, and a diversion net is installed in the raw water bag and the clean water bag; a glue coating area 1 210 is provided in the middle of the back of the diaphragm 200 in the clean water bag, and a glue coating area 2 220 forming a closed loop is provided at the four corners; a distance is provided between the glue coating area 1 210 and the glue coating area 2 220; the water guide pipe 100 is arranged in the clean water bag, and the calcium and magnesium ions flowing out of the water inlet chamber 120 are mixed with the pure water that penetrates into the clean water bag and flow out through the water outlet chamber 130.
[0033] A membrane assembly consists of multiple membrane sheets, with the membrane surfaces attached to each other; the membrane backs attached to each other, and the membrane surfaces separated by a wastewater diversion net 400 to ensure the flow of raw water; there is a clean water diversion net 500 between the membrane backs to provide a channel for the flow of pure water.
[0034] The membrane 200 is a reverse osmosis membrane or a nanofiltration membrane.
[0035] The distance between the first glue coating area 210 and the second glue coating area 220 forms a mixing channel.
[0036] The width of the glue coating area 210 is 1-3 cm. The narrower the value is, the better it is without water leakage. The narrower the film, the larger the effective area.
[0037] The distance between the first gluing area 210 and the second gluing area 220 is 2-3 cm.
[0038] like Figure 2 As shown, the raw water is filtered through the membrane and then penetrates into the water purification bag. The calcium and magnesium ions flow out from the outflow hole of the water inlet chamber 120, flow in the direction of the arrow, and after being fully mixed, enter the inflow hole, and pure water containing calcium and magnesium ions flows out from the bottom of the water outlet chamber 130.
[0039] Regarding the content disclosed in this case, the following points need to be explained:
[0040] (1) The drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case. Other structures can refer to the general design;
[0041] (2) In the absence of conflict, the embodiments and features of the embodiments disclosed in this case may be combined with each other to form new embodiments;
[0042] The above are only specific implementation methods disclosed in this case, but the protection scope of this disclosure is not limited thereto. The protection scope disclosed in this case should be based on the protection scope of the claims.
Claims
1. A novel loose nanofiltration membrane module characterized in that, The utility model relates to a water purifier, including: a water guide pipe (100) is provided with a partition (110) in the inner chamber, and the inner chamber of the water guide pipe (100) is divided into a water inlet chamber (120) and a water outlet chamber (130); the outer side of the water guide pipe (100) is provided with a plurality of outflow holes in communication with the water inlet chamber (120) and a plurality of inflow holes in communication with the water outlet chamber (130); a plurality of diaphragms (200) are provided, and the front and back surfaces form raw water bags and clean water bags respectively, the raw water bags and the clean water bags are both provided with a water guide net; the middle part of the membrane back of the diaphragm (200) in the clean water bag is provided with a glue coating area one (210), and the four peripheral corners are provided with a glue coating area two (220) forming a closed loop; the water guide pipe (100) is arranged in the clean water bag, the calcium and magnesium ions of the water inlet chamber (120) are mixed with the pure water permeated into the clean water bag, and the mixed water flows out through the water outlet chamber (130).
2. The novel loose nanofiltration membrane module according to claim 1, characterized in that, The diaphragm (200) is a reverse osmosis membrane or a nanofiltration membrane.
3. The novel loose nanofiltration membrane module according to claim 1, characterized in that, The outer side of the diaphragm (200) is wrapped by an envelope (300).
4. The novel loose nanofiltration membrane module according to claim 1, characterized in that, The width value of the glue coating area one (210) is 1-3cm.
5. The novel loose nanofiltration membrane module according to claim 1, wherein, The spacing between the glue coating area one (210) and the glue coating area two (220) is 2-3cm.
6. The novel loose nanofiltration membrane module according to claim 1, wherein, The water guide net in the raw water bag is a waste water guide net (400); The water guide net in the clean water bag is a clean water guide net (500).