High-liquidity DTRO (Disk Tubular Reverse Osmosis) membrane component and application

Abstract

The invention discloses a high-liquidity DTRO (Disk Tubular Reverse Osmosis) membrane component which comprises a flow guide disc, a first permeable membrane, flow guide cloth and a second permeable membrane which are sequentially stacked, a supporting piece is placed between the first permeable membrane and the second permeable membrane and close to the inner circle, the outer circle of the supporting piece is in contact with the flow guide cloth, and a plurality of flow guide channels are formed in the supporting piece. According to the high-liquidity DTRO membrane assembly and the application, the technical problem that a traditional DTRO membrane assembly needs high-pressure operation and cannot be suitable for normal-pressure environments such as seawater purification or drinking water purification in rural areas is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of DTRO membrane, in particular to a high-flow DTRO membrane assembly and application. BACKGROUND

[0002] The sewage purifier generally uses reverse osmosis membrane to filter sewage. Reverse osmosis is a process in which a thin membrane with selectivity is used to separate water molecules from solutes in water, and the membrane with selectivity can only allow solvent to pass through but not solute. Most inorganic salts, organic matter, bacteria, viruses and other substances dissolved in water cannot pass through the reverse osmosis membrane, so that the pure water permeated and the concentrated water cannot permeate are strictly separated. The reverse osmosis purifier uses the principle of reverse osmosis to treat sewage, and the desalination rate of the reverse osmosis membrane is basically controlled above 99%.

[0003] The DTRO membrane (reverse osmosis membrane) assembly generally includes multiple groups of flow guide discs and membrane sheets, each group including a flow guide disc and a membrane sheet. The membrane sheet generally includes a three-layer structure, the middle layer is a flow guide cloth, and the two sides are permeable membranes. By assembling multiple membrane sheets and flow guide discs into the purifier, the channel between the membranes is narrow, generally only 0.2mm, which is easy to block. High pressure is needed to press the water into the membrane channel to achieve reverse osmosis purification. This method cannot be applied to seawater purification or drinking water purification in rural areas under normal pressure (normal pressure generally refers to water pressure not exceeding 1.0MPa), and the operation cost is high. SUMMARY

[0004] The purpose of the present application is to provide a high-flow DTRO membrane assembly to solve the technical problem that the traditional DTRO membrane assembly needs high pressure operation and cannot be applied to seawater or drinking water purification in rural areas under normal pressure.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a flow guide disc, a first permeable membrane, a flow guide cloth and a second permeable membrane are sequentially stacked and placed, a support is placed between the first permeable membrane and the second permeable membrane near the inner circle, the outer circle of the support is in contact with the flow guide cloth, and a plurality of flow guide channels are formed in the support.

[0006] Further, the width of the support is not more than half of the width of the flow guide cloth.

[0007] Further, the thickness of the support is 1-2mm.

[0008] Further, the diameter of the flow guide channel is 0.4-0.6mm.

[0009] The application of a high-flow DTRO membrane assembly, which is applied to seawater or rural drinking water purification.

[0010] The application of a high-flow DTRO membrane assembly, which is applied to seawater or rural drinking water purification.

[0011] Compared with the prior art, the application has the beneficial effects that: the support is placed between the first and second permeable membranes, supports the first and second permeable membranes, increases the membrane channel, flows out through the opened flow guide channel, improves the flow of the DTRO membrane assembly, is convenient for use in seawater purification or rural drinking water purification in normal pressure environment, and improves the applicability. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The application is a structural diagram of the DTRO membrane assembly. Figure 2 The application is a structural diagram of the support. Figure 3 The application is a top view of the DTRO membrane assembly. Figure 4 The application is an A-A sectional view. Figure 3 The application is an A-A sectional view. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0014] Please refer to Figures 1-4 The application provides a high-flow DTRO membrane assembly, which comprises a flow guide disc 6, a first permeable membrane 1, a flow guide cloth 2 and a second permeable membrane 3 placed in sequence, a support 4 placed between the first and second permeable membranes 1 and 3 near the inner circle, the outer circle of the support 4 in contact with the flow guide cloth 2, and a plurality of flow guide channels 5 opened on the support 4.

[0015] The width of the support 4 is not more than half of the width of the flow guide cloth 2.

[0016] The thickness of the support 4 is 1-2 mm, which maintains the appropriate thickness of the support, the strength and the flow.

[0017] The diameter of the flow guide channel 5 is 0.4-0.6 mm, which maintains the high flow.

[0018] The application of high flow DTRO membrane module, the high flow DTRO membrane module is applied in the purification of seawater or rural drinking water.

[0019] The application of high flow DTRO membrane module, the high flow DTRO membrane module is applied in the purification of seawater or rural drinking water.

[0020] Working principle: after the water is filtered by the first permeable membrane and the second permeable membrane, the water flows into the guide channel on the support through the guide cloth, and then flows out from the outlet of the water purifier.

[0021] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified or some technical features can be replaced by equivalent features by those skilled in the art, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-flux DTRO membrane module comprising a flow guide disc (6), a first permeable membrane (1), a flow guide cloth (2) and a second permeable membrane (3) placed in sequence, characterized in that: The first permeation membrane (1) and the second permeation membrane (3) are placed with a support (4) near the inner circle, the outer circle of the support (4) and the flow guide cloth (2) are in contact, and a plurality of flow guide channels (5) are opened on the support (4).

2. The high flux DTRO membrane module of claim 1, wherein: The width of the support (4) is not more than half of the width of the flow guide cloth (2).

3. The high flux DTRO membrane module of claim 1, wherein: The thickness of the support (4) is 1-2mm.

4. The high flux DTRO membrane module of claim 1, wherein: The diameter of the flow guide channel (5) is 0.3-0.5mm.

5. Use of a high flux DTRO membrane module characterized in that: The high-flow DTRO membrane assembly of any one of claims 1-4 is applied to the purification of seawater or rural drinking water.

6. The use of a high flux DTRO membrane module according to claim 5, characterized in that The steps are: water is filtered through the first permeation membrane (1) and the second permeation membrane (3), flows into the flow guide cloth (2), flows into the flow guide channel (5), and flows out from the inner circle of the support (4).

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