An easy-to-clean reverse osmosis membrane

Abstract

This utility model discloses a reverse osmosis membrane that is easy to clean, relating to the field of filter material technology. It includes a membrane roll housing with a water collection pipe horizontally arranged inside. Multiple sets of polyester substrate membranes are wound around the outside of the water collection pipe. An inlet and outlet assembly for easy backwashing and wastewater discharge is located on the left side of the membrane roll housing. This easy-to-clean reverse osmosis membrane, with its inlet and outlet housings, water pipe pre-reserved groove, inlet pipe, and outlet pipe, allows water to flow in opposite directions during use, flushing out colloids, organic matter, etc., that were previously attached to the first and second raw water guide nets. Closing the solenoid valve at the inlet pipe and opening the solenoid valve at the outlet pipe allows the flushing wastewater to be discharged, preventing contamination of the upstream membrane material and achieving the function of easy backwashing and wastewater discharge. This solves the problem of devices lacking this function.

Description

Technical Field

[0001] This utility model relates to the field of filter material technology, specifically to a reverse osmosis membrane that is easy to clean. Background Technology

[0002] A reverse osmosis membrane is an artificial semi-permeable membrane with specific properties, mimicking a biological semi-permeable membrane. It is the core component of reverse osmosis technology. The principle of reverse osmosis is based on the principle that, under pressure higher than the osmotic pressure of the solution, other substances cannot pass through the semi-permeable membrane, thus separating them from water. The membrane pores of a reverse osmosis membrane are extremely small, thus effectively removing dissolved salts, colloids, microorganisms, organic matter, and other pollutants from water. The system offers advantages such as high water quality, low energy consumption, no pollution, simple process, and easy operation.

[0003] Most reverse osmosis membranes currently on the market are similar in overall structure, consisting mainly of an outer shell, a water collection pipe, and membrane material wound around the outside of the water collection pipe. The membrane material typically consists of three layers: a polyester base membrane, a polysulfone support layer, and a polyamide membrane. The membrane material is folded in half, with a raw water guide net sandwiched in the middle, and wound around the outside of the water collection pipe. Raw water is guided by the guide net, filtered by the polyamide membrane, and then flows along the polysulfone support layer to the water collection pipe, where it is collected and discharged. In actual use, there are some functional shortcomings and room for improvement. For example, during use, the inlet side of the guide net is easily clogged by impurities in the water, requiring individual disassembly and cleaning, which is quite troublesome. It also lacks the function of easy backwashing and sewage discharge.

[0004] Now, a novel reverse osmosis membrane that is easy to clean is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a reverse osmosis membrane that is easy to clean, in order to solve the problem mentioned in the background art that it does not have the function of easy backwashing and sewage discharge.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a reverse osmosis membrane that is easy to clean, comprising a membrane roll outer shell, a water collection pipe arranged laterally inside the membrane roll outer shell, multiple sets of polyester base membranes wound around the outside of the water collection pipe, end plates fixedly connected to the left and right sides of the membrane roll outer shell, a first polyamide film and a second polyamide film respectively provided on the inner and outer sides of the polyester base membrane, a polysulfone support layer filled between the first polyamide film, the second polyamide film and the polyester base membrane, a first raw water guiding net sandwiched inside the second polyamide film, a second raw water guiding net sandwiched between each pair of first polyamide films, multiple sets of water inlet holes opened on the front and rear sides and the top and bottom ends of the water collection pipe, four sets of reinforcing ribs fixedly connected to the inner wall of the water collection pipe, and a water inlet and outlet assembly for convenient backwashing and sewage discharge provided on the left side of the membrane roll outer shell.

[0007] The inlet and outlet assembly includes an inlet and outlet housing, which is fixedly connected to the left side of the membrane roll housing. A water pipe pre-reserved groove is opened at the middle position of the left side of the inlet and outlet housing. A water inlet pipe is fixedly connected to the top of the left side of the inlet and outlet housing, and a sewage pipe is fixedly connected to the bottom of the left side of the inlet and outlet housing.

[0008] As a further technical solution of this utility model, the outer diameters of the membrane roll shell and the inlet / outlet shell are the same, and the inner diameter of the water pipe pre-reserved groove is the same as the outer diameter of the water collection pipe.

[0009] As a further technical solution of this utility model, the end plate and the inlet and outlet housing are fixedly connected, and the horizontal center lines of the water collection pipe, the end plate, and the inlet and outlet housing coincide.

[0010] As a further technical solution of this utility model, the inner diameters of the water inlet pipe and the sewage outlet pipe are the same, and the interiors of the water inlet and drainage shell, the water inlet pipe, and the sewage outlet pipe are connected.

[0011] As a further technical solution of this utility model, the first polyamide film and the second polyamide film are respectively connected to the polyester base film on both sides, and the first raw water guiding net and the second raw water guiding net have the same thickness.

[0012] As a further technical solution of this utility model, the water inlet hole penetrates both the inner and outer sides of the water collection pipe, and the left and right sides of the water collection pipe and the reinforcing rib are flush.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the easy-to-clean reverse osmosis membrane not only realizes the function of easy backwashing and sewage discharge, but also realizes the function of double-sided filtration to improve efficiency, and also realizes the function of enlarging the pores to increase the strength of the pipeline.

[0014] (1) By setting up inlet and outlet shells, water pipe reserved grooves, inlet pipes and drain pipes, during use, raw water passes through the membrane roll shell from left to right. The first and second raw water guiding nets guide the water flow. The first and second polyamide membranes intercept dissolved salts, colloids, microorganisms, organic matter, etc. in the water. The filtered water is collected by the water collection pipe and transported backward. Some of the concentrated water continues to flow backward along the raw water guiding net, waiting for the next filtration. A set of inlet and outlet shells is installed on the water inlet side of the membrane roll shell. Water enters through the inlet pipe, and a corresponding solenoid valve is later installed at the inlet pipe. A solenoid valve is also installed at the drain pipe. When cleaning and sewage discharge are required, pure water is pumped in from the right side of the membrane roll housing and the water collection pipe. The water flows in the opposite direction, flushing out the colloids, organic matter, etc. that were originally attached to the first and second raw water guide nets. The solenoid valve at the inlet pipe is closed, and the solenoid valve at the drain pipe is opened to discharge the flushing sewage, avoiding contamination of the membrane material in the previous section and realizing the function of facilitating backwashing and sewage discharge.

[0015] (2) By setting up a polyester base membrane, a polysulfone support layer, a first polyamide film, a second polyamide film, a first raw water guide net and a second raw water guide net, when in use, the inner and outer sides of the polyester base membrane have polysulfone support layers, which, together with the first polyamide film and the second polyamide film, form a double-sided filter. When winding, a second raw water guide net is added, and the inner and outer water guide filtration is carried out simultaneously, making full use of the internal space of the membrane roll shell, maximizing the filtration efficiency, and realizing the function of improving efficiency through double-sided filtration.

[0016] (3) By setting up a water collection pipe, a water inlet hole and reinforcing ribs, when in use, the round hole on the water collection pipe is changed into a long groove water inlet hole, increasing the size of the water inlet hole and making the water inlet more efficient. At the same time, reinforcing ribs are added to the inner wall of the water collection pipe to ensure the structural strength of the water collection pipe and avoid breakage, thus realizing the function of expanding the hole to increase the strength of the pipe. Attached Figure Description

[0017] Figure 1 This is a frontal cross-sectional view of the present invention.

[0018] Figure 2 This is a side enlarged structural diagram of the end plate of this utility model;

[0019] Figure 3 This is a side enlarged structural schematic diagram of the inlet and outlet housing of this utility model;

[0020] Figure 4 This is a partial side view enlarged cross-sectional schematic diagram of the polyester base film of this utility model;

[0021] Figure 5 This is an enlarged side view cross-sectional schematic diagram of the water collection pipe of this utility model.

[0022] In the figure: 1. Membrane roll outer shell; 2. Polyester base membrane; 3. Polysulfone support layer; 4. First polyamide film; 5. Second polyamide film; 6. First raw water diversion net; 7. Second raw water diversion net; 8. Water collection pipe; 9. End plate; 10. Inlet and outlet shell; 11. Water pipe reserved groove; 12. Inlet pipe; 13. Drain pipe; 14. Inlet hole; 15. Reinforcing rib. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: Please refer to Figure 1-5 A reverse osmosis membrane that is easy to clean includes a membrane roll housing 1, a water collection pipe 8 is arranged horizontally inside the membrane roll housing 1, multiple sets of polyester base membranes 2 are wound around the outside of the water collection pipe 8, end plates 9 are fixedly connected to the left and right sides of the membrane roll housing 1 respectively, and an inlet and outlet water discharge assembly for easy backwashing and sewage discharge is arranged on the left side of the membrane roll housing 1.

[0025] Please see Figure 1-5 A reverse osmosis membrane that is easy to clean also includes a drainage component. The drainage component includes a drainage housing 10, which is fixedly connected to the left side of the membrane roll housing 1. A water pipe reserved groove 11 is opened at the middle position of the left side of the drainage housing 10. A water inlet pipe 12 is fixedly connected to the top of the left side of the drainage housing 10, and a sewage pipe 13 is fixedly connected to the bottom of the left side of the drainage housing 10.

[0026] The outer diameters of the membrane roll outer shell 1 and the inlet and outlet shell 10 are the same. The inner diameter of the water pipe reserved groove 11 is the same as the outer diameter of the water collection pipe 8. The end plate 9 and the inlet and outlet shell 10 are fixedly connected. The horizontal center lines of the water collection pipe 8, the end plate 9, and the inlet and outlet shell 10 coincide. The inner diameters of the water inlet pipe 12 and the sewage pipe 13 are the same. The interiors of the inlet and outlet shell 10, the water inlet pipe 12, and the sewage pipe 13 are connected to each other for easy cleaning and sewage discharge.

[0027] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, a set of inlet and outlet housings 10 is installed on the water inlet side of the membrane roll housing 1. Water enters from the inlet pipe 12, and a corresponding solenoid valve is later installed at the inlet pipe 12. A solenoid valve is also installed at the drain pipe 13. When cleaning and sewage discharge are required, pure water is pumped in from the right side of the membrane roll housing 1 and the water collection pipe 8. The water flows in the opposite direction, flushing out the colloids, organic matter, etc. that were originally attached to the first raw water guide net 6 and the second raw water guide net 7. The solenoid valve at the inlet pipe 12 is closed, and the solenoid valve at the drain pipe 13 is opened to discharge the flushing sewage, thus avoiding pollution of the membrane material in the previous section.

[0028] A first polyamide film 4 and a second polyamide film 5 are respectively provided on the inner and outer sides of the polyester base membrane 2. A polysulfone support layer 3 is filled between the first polyamide film 4, the second polyamide film 5 and the polyester base membrane 2. A first raw water guiding net 6 is sandwiched inside the second polyamide film 5. A second raw water guiding net 7 is sandwiched between each pair of first polyamide films 4. The two sides of the first polyamide film 4 and the second polyamide film 5 are respectively connected to the polyester base membrane 2. The first raw water guiding net 6 and the second raw water guiding net 7 have the same thickness, resulting in high double-sided filtration efficiency.

[0029] Specifically, such as Figure 1 and Figure 4As shown, the polyester base membrane 2 has polysulfone support layers 3 on both the inner and outer sides, which, together with the first polyamide film 4 and the second polyamide film 5, form a double-sided filter. A second raw water guide net 7 is added during winding, and the internal and external water filtration are carried out simultaneously, making full use of the internal space of the membrane roll shell 1 and maximizing the filtration efficiency.

[0030] Multiple sets of water inlet holes 14 are opened on the front and rear sides and the top and bottom ends of the water collection pipe 8. Four sets of reinforcing ribs 15 are fixedly connected to the inner wall of the water collection pipe 8. The water inlet holes 14 penetrate the inner and outer sides of the water collection pipe 8. The left and right sides of the water collection pipe 8 and the reinforcing ribs 15 are flush. While expanding the holes, the strength of the pipe fittings can be guaranteed.

[0031] Specifically, such as Figure 1 and Figure 5 As shown, the round hole on the water collection pipe 8 is changed into a long groove water inlet hole 14, which increases the size of the water inlet hole and makes the water intake more efficient. At the same time, a reinforcing rib 15 is added to the inner wall of the water collection pipe 8 to ensure the structural strength of the water collection pipe 8 and prevent breakage.

[0032] Working principle: In use, the raw water first flows from left to right through the membrane roll housing 1. The first raw water guide net 6 and the second raw water guide net 7 guide the water flow. The first polyamide membrane 4 and the second polyamide membrane 5 intercept dissolved salts, colloids, microorganisms, organic matter, etc. in the water. The filtered water is collected by the water collection pipe 8 and then transported backward. Some of the concentrated water continues to flow backward along the raw water guide net, waiting for the next filtration. A set of inlet and outlet housings 10 is installed on the water inlet side of the membrane roll housing 1 for water inlet. Water enters through inlet pipe 12, where a corresponding solenoid valve is later installed. A similar solenoid valve is installed at drain pipe 13. When cleaning and drainage are required, purified water is pumped in from the right side of the membrane roll outer shell 1 and the water collection pipe 8. The water flows in the opposite direction, flushing out colloids, organic matter, etc., that were previously attached to the first raw water guide net 6 and the second raw water guide net 7. The solenoid valve at inlet pipe 12 is then closed, and the solenoid valve at drain pipe 13 is opened to discharge the flushing wastewater, preventing contamination of the preceding membrane material. The polyester base membrane 2 has polysulfone support layers 3 on both its inner and outer surfaces, forming a double-sided filtration system in conjunction with the first polyamide membrane 4 and the second polyamide membrane 5. A second raw water guide net 7 is added during winding, allowing for simultaneous internal and external water filtration, fully utilizing the internal space of the membrane roll outer shell 1 and maximizing filtration efficiency. The round hole on the water collection pipe 8 is changed into a long groove water inlet hole 14, which increases the size of the water inlet hole and makes the water intake more efficient. At the same time, a reinforcing rib 15 is added to the inner wall of the water collection pipe 8 to ensure the structural strength of the water collection pipe 8 and prevent breakage.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A reverse osmosis membrane that is easy to clean, comprising a membrane roll housing (1), characterized in that: The membrane roll outer shell (1) has a water collection pipe (8) arranged horizontally inside. The water collection pipe (8) is wrapped with multiple sets of polyester base membranes (2). The membrane roll outer shell (1) is fixedly connected to the left and right sides respectively. The inner and outer sides of the polyester base membrane (2) are respectively provided with a first polyamide film (4) and a second polyamide film (5). The first polyamide film (4), the second polyamide film (5) and the polyester base membrane (2) are respectively filled with a polysulfone support layer (3). The second polyamide film (5) is sandwiched with a first raw water guide net (6). The first polyamide film (4) is sandwiched between each pair of the first raw water guide nets (7). The water collection pipe (8) has multiple sets of water inlet holes (14) on the front and back sides and the top and bottom ends respectively. The inner wall of the water collection pipe (8) is fixedly connected with four sets of reinforcing ribs (15). The membrane roll outer shell (1) is provided with a water inlet and outlet assembly for convenient backwashing and sewage discharge on the left side. The inlet and outlet assembly includes an inlet and outlet housing (10), which is fixedly connected to the left side of the membrane roll housing (1). A water pipe reserved groove (11) is provided at the middle position of the left side of the inlet and outlet housing (10). A water inlet pipe (12) is fixedly connected to the top of the left side of the inlet and outlet housing (10), and a sewage pipe (13) is fixedly connected to the bottom of the left side of the inlet and outlet housing (10).

2. The reverse osmosis membrane that is easy to clean according to claim 1, characterized in that: The outer diameters of the membrane roll outer shell (1) and the inlet and outlet shell (10) are the same, and the inner diameter of the water pipe reserved groove (11) is the same as the outer diameter of the water collection pipe (8).

3. The reverse osmosis membrane that is easy to clean according to claim 1, characterized in that: The end plate (9) and the inlet / outlet housing (10) are fixedly connected, and the horizontal center lines of the water collection pipe (8), the end plate (9), and the inlet / outlet housing (10) coincide.

4. The reverse osmosis membrane that is easy to clean according to claim 1, characterized in that: The water inlet pipe (12) and the sewage pipe (13) have the same inner diameter, and the water inlet and outlet housing (10), the water inlet pipe (12), and the sewage pipe (13) are internally connected.

5. The reverse osmosis membrane that is easy to clean according to claim 1, characterized in that: The first polyamide film (4) and the second polyamide film (5) are connected to the polyester base film (2) on both sides respectively, and the first raw water guide net (6) and the second raw water guide net (7) have the same thickness.

6. The reverse osmosis membrane that is easy to clean according to claim 1, characterized in that: The water inlet (14) penetrates both the inner and outer sides of the water collection pipe (8), and the left and right sides of the water collection pipe (8) and the reinforcing rib (15) are flush.

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