CN212215142U - Turbulent anti-pollution reverse osmosis membrane element - Google Patents

Abstract

The utility model discloses a turbulent anti-pollution reverse osmosis membrane element, which comprises a central tube and a plurality of reverse osmosis membrane groups, wherein the reverse osmosis membrane groups are wound on the central tube, the tube wall of the central tube is provided with a plurality of water inlet holes, the reverse osmosis membrane groups comprise a water flow guide cloth, dense rivers guidance tape and reverse osmosis membrane, it leads the cloth ring to wrap around covering outside the center tube to produce the rivers, per adjacent two produce the rivers and lead and be equipped with the reverse osmosis diaphragm of one between the cloth, the reverse osmosis diaphragm is the fifty percent discount in opposite directions along the axis face of center tube, the fifty percent discount of reverse osmosis diaphragm is close to the center tube setting, dense rivers guidance tape sets up between the fifty percent discount face of reverse osmosis diaphragm, dense rivers guidance tape is crooked wave, a plurality of flowage holes have been seted up on the dense rivers guidance tape, be formed with half-circular arc's passageway between dense rivers guidance tape and the reverse osmosis diaphragm, flowage hole and passageway intercommunication, reverse osmosis diaphragm and adjacent two sides limit of producing rivers guidance cloth with keep away from scribble sealed glue on one side of center tube.

Description

Turbulent anti-pollution reverse osmosis membrane element

Technical Field

The utility model relates to a water treatment technical field especially relates to a torrent antipollution reverse osmosis membrane element.

Background

At present, a rolling process is mostly adopted for a reverse osmosis membrane element, because a reverse osmosis membrane and a concentrated water separation net are in close contact with each other, the water flow speed in the reverse osmosis membrane element is low, the surface of the reverse osmosis membrane is easily attached by solute or other substances to be intercepted, the solute can diffuse from the membrane surface to the filtered solution under the action of concentration gradient to cause concentration polarization, the desalination rate and the water flux of the membrane element are reduced, and finally the service life of the membrane element is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is:

the water flow speed in the reverse osmosis membrane element is low, the concentration polarization phenomenon is easily generated on the surface of the membrane, pollutants in water are easily deposited on the surface of the membrane, the desalination rate and the water flux of the membrane element are reduced, and finally the service life of the membrane element is shortened.

In order to solve the problem, the utility model adopts the following technical scheme:

a turbulence anti-pollution reverse osmosis membrane element comprises a central tube and a plurality of reverse osmosis membrane groups, wherein the reverse osmosis membrane groups are wound on the central tube, a plurality of water inlet holes are formed in the tube wall of the central tube, each reverse osmosis membrane group comprises a produced water flow guide cloth, a concentrated water flow passage plate and a reverse osmosis membrane, the produced water flow guide cloth is annularly wrapped outside the central tube, the reverse osmosis membrane with one membrane surface oppositely folded is arranged between every two adjacent produced water flow guide cloths, the opposite folding edge of the reverse osmosis membrane is close to the central tube, the concentrated water flow passage plates are arranged between the opposite folding surfaces of the reverse osmosis membrane and are of a bent wave-shaped structure, a plurality of flow holes are formed in the arc side edge of each concentrated water flow passage plate, a semi-arc-shaped channel is formed between each concentrated water flow passage plate and the reverse osmosis membrane, and the flow holes are communicated with the channel, and sealant is coated on two sides of the reverse osmosis membrane and the adjacent water flow guide cloth and one side far away from the central pipe.

Further, the number of the reverse osmosis membrane groups is two, three, five or ten.

Further, the height of the channels is 1-10mm, and the distance between the vertexes of the two channels is 1-10 mm.

Furthermore, the water inlet holes are provided with four groups, each group of water inlet holes is twelve, and the water inlet holes are uniformly distributed on the periphery of the pipe wall of the central pipe and are communicated with the inner cavity of the central pipe.

Further, the blowby holes have sixteen rows, and each row has twenty-four.

Further, torrent antipollution reverse osmosis membrane element still includes shell, water inlet cover and play water cover, the overcoat is located outside the reverse osmosis membrane group, water inlet cover with it installs respectively to go out the water cover the both ends of shell, the both ends of center tube stretch out the shell and respectively with water inlet cover with it is fixed to go out the water cover.

Furthermore, a plurality of water inlets which are uniformly distributed are formed in the water inlet cover, and the water inlets are communicated with the channel.

Further, the water inlet has eight.

Furthermore, a plurality of concentrated water outlets and a pure water outlet which are uniformly distributed are formed in the water outlet cover, the concentrated water outlets are communicated with the channel, and the pure water outlets are communicated with the inner cavity of the central pipe.

Further, the concentrated water outlet has eight.

The utility model has the advantages that:

the utility model discloses a turbulent flow antipollution reverse osmosis membrane element, a plurality of produced water flow guide cloth are coiled on a central tube, reverse osmosis membranes are arranged between the produced water flow guide cloth and are annularly wrapped outside the central tube and oppositely folded along the axis film surface of the central tube, a concentrated water flow passage plate is arranged between the folded surfaces of the reverse osmosis membranes, the concentrated water flow passage plate is in a curved wave shape, a semi-circular arc-shaped passage is formed between the curved concentrated water flow passage plate and the folded reverse osmosis membranes, the concentrated water flows along the passage, the resistance is small, the flow rate is fast, pollutants are not easy to attach and block, the pollution resistance of the reverse osmosis membrane element can be effectively improved, residual water after filtration and raw water are mixed through the channeling holes to form turbulent flow when flowing at a high speed, the flow state is strengthened through the channeling holes while the flow speed of concentrated water is increased, the concentration polarization phenomenon can be effectively prevented, and the service life of the reverse osmosis membrane element is prolonged.

Drawings

Fig. 1 is a schematic structural view of a turbulent anti-pollution reverse osmosis membrane element according to the present invention;

FIG. 2 is a front view of a water inlet cover in the turbulent anti-fouling reverse osmosis membrane element shown in FIG. 1;

FIG. 3 is a front view of a water outlet cover in the turbulent anti-fouling reverse osmosis membrane element shown in FIG. 1;

FIG. 4 is a schematic structural diagram of a central tube and a reverse osmosis membrane module in the turbulent anti-pollution reverse osmosis membrane element shown in FIG. 1;

FIG. 5 is a schematic view showing the connection between the central tube and the produced water drainage cloth shown in FIG. 4;

FIG. 6 is a schematic view showing a connection relationship between the reverse osmosis membrane and the concentrate flow path plate shown in FIG. 4;

FIG. 7 is a schematic cross-sectional view of a reverse osmosis membrane and concentrate flow channel plate of the reverse osmosis membrane module of FIG. 6;

fig. 8 is a schematic structural view of the concentrated water flow field plate shown in fig. 6.

In the figure: 100. turbulent anti-pollution reverse osmosis membrane element 1, central tube 2, reverse osmosis membrane group 3, shell 4, water inlet cover 5, water outlet cover 6, sealant 11, water inlet hole 21, produced water flow guide cloth 22, concentrated water flow channel plate 23, reverse osmosis membrane 41, water inlet hole 51, concentrated water outlet hole 52, pure water outlet hole 221, channel 222 and channeling hole.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

As shown in fig. 1 to 7, the utility model provides a torrent antipollution reverse osmosis membrane element 100, reverse osmosis membrane element 100 includes center tube 1, reverse osmosis membrane group 2, shell 3, intake cover 4 and play water cover 5, reverse osmosis membrane group 2 has the multiunit, every reverse osmosis membrane group 2 of group all convolutes on center tube 1, outside center tube 1 and reverse osmosis membrane group 2 were located to shell 3 cover, intake cover 4 and play water cover 5 were installed respectively at the both ends of shell 3, the both ends of center tube 1 stretch out shell 3 and fixed with intake cover 4 and play water cover 5 at shell 3 both ends respectively, in this embodiment, reverse osmosis membrane group 2's quantity is two, three, five or ten, the material of shell 3 is glass fiber.

The pipe wall of the central pipe 1 is provided with a plurality of water inlet holes 11, the water inlet holes 11 are uniformly distributed around the pipe wall of the central pipe 1 and are communicated with the inner cavity of the central pipe 1, in this embodiment, the water inlet holes 11 are four groups, and each group of the water inlet holes 11 has twelve.

The reverse osmosis membrane group 2 comprises produced water flow guide cloth 21, a concentrated water flow channel plate 22 and reverse osmosis membranes 23, the produced water flow guide cloth 21 surrounds and wraps the center pipe 1, a reverse osmosis membrane 23 is arranged between every two adjacent produced water flow guide cloth 21, the reverse osmosis membrane 23 surrounds and wraps the center pipe 1 and is oppositely folded along the axis membrane surface of the center pipe 1, the folded edges of the reverse osmosis membrane 23 are arranged at one side close to the connecting part of the produced water flow guide cloth 21 and the center pipe 1, the concentrated water flow channel plate 22 is arranged between the folded surfaces of the reverse osmosis membrane 23, the concentrated water flow channel plate 22 is in a bent wave shape, the circular arc side edge of the bent concentrated water flow channel plate 22 is provided with a flow-channeling hole 222, a semicircular arc-shaped channel 221 is formed between the concentrated water flow channel plate 22 and the folded reverse osmosis membrane 23, the height of the channel 221 is 1-10mm, and the interval between the vertexes of the two, the flow-through hole 222 is communicated with the channel 221, and the sealing glue 6 which is glued is coated between the reverse osmosis membrane 23 and two sides of the adjacent produced water flow guide cloth 21 and between one side far away from the central tube 1. In this embodiment, the blowby holes 222 have sixteen rows and twenty-four rows of blowby holes 222.

The water inlet cover 4 is provided with a plurality of uniformly distributed water inlets 41, the water inlets 41 are communicated with the channel 221, and in this embodiment, the number of the water inlets 41 is eight. The outlet cover 5 is provided with a plurality of uniformly distributed concentrated water outlets 51 and a pure water outlet 52, the concentrated water outlets 51 are communicated with the channel 221, the pure water outlet 52 is communicated with the inner cavity of the central tube 1, and in the embodiment, the number of the concentrated water outlets 51 is eight.

During installation, a plurality of produced water flow guide cloth 21 are uniformly fixed on the central tube 1 along the circumferential direction of the central tube 1, two ends of the central tube 1 are fixed by a rotatable clamp, the membrane surfaces of a plurality of reverse osmosis membranes 23 are oppositely folded to form a hinge, a concentrated water flow channel plate 22 is arranged between two layers of the folded reverse osmosis membranes 23, the treated reverse osmosis membranes 23 and the concentrated water flow channel plates 22 are inserted between the produced water flow guide cloth 21 at intervals, wherein the folded end of the reverse osmosis membrane 23 is positioned in a crack between the produced water flow guide cloth 21 and is close to the central tube 1, and the operation is repeated until a plurality of groups of reverse osmosis membranes 23 are all plugged in the central tube 1. In the process of plugging the reverse osmosis membrane 23, three sides of the outer side of the bonding area of the reverse osmosis membrane 23 and the produced water flow guide cloth 21 are coated with the sealant 6, and the reverse osmosis membrane 23 and one side of the produced water flow guide cloth 21 close to the central tube 1 are not coated with the sealant, and the operations are repeated. After the completion, the produced water flow guide cloth 21, the concentrated water flow passage plate 22 and the reverse osmosis membrane 23 are wound on the central tube 1, and placed in the housing 3 after the winding is completed, and the water inlet cover 4 and the water outlet cover 5 are respectively fixed to both ends of the housing 3.

When the membrane element is used, raw water enters from a channel 221 formed by the concentrated water flow channel plate 22 and the reverse osmosis membrane 23 through the water inlet 41 on the water inlet cover 4, the edges of the produced water flow guide cloth 21 and the reverse osmosis membrane 23 are bonded by the sealant 6, and the sealant 6 does not exist between the reverse osmosis membrane 23 and the concentrated water flow channel plate 22, so that the raw water can only enter the membrane element 100 from the space between the concentrated water flow channel plate 22 and the reverse osmosis membrane 23, at the moment, part of the raw water passes through the folded reverse osmosis membrane 23 to enter the produced water flow guide cloth 21 and then flows into the inner cavity of the central tube 1 through the water inlet hole 11 on the central tube 1 along the direction of the produced water flow guide cloth 21 and flows out from the end part of the central tube 1. The filtered residual water between the reverse osmosis membrane 23 and the concentrated water flow channel plate 22 is mixed with the raw water by the blowby hole 222 and flows out from the concentrated water outlet 52 of the water outlet cover 5 through the channel 221 to form concentrated water.

The utility model discloses a torrent antipollution reverse osmosis membrane element 100, it leads cloth 21 to coil on the center tube 1 has a plurality of rivers of producing, it is equipped with reverse osmosis diaphragm 23 to produce between the water flow leads cloth 21, reverse osmosis diaphragm 23 encircles cladding outside center tube 1 and follows the axis face of center tube 1 fifty percent discount mutually, be equipped with concentrated water runner plate 22 between the fifty percent discount face of reverse osmosis diaphragm 23, concentrated water runner plate 22 is crooked wave, be formed with half-circular arc's passageway 221 between crooked concentrated water runner plate 22 and the fifty percent discount reverse osmosis diaphragm 23, concentrated water flows along passageway 221, the resistance is little, the velocity of flow is fast, the pollutant is difficult for adhering to, difficult jam, can effectively improve the antipollution performance of reverse osmosis membrane element, water remaining after the filtration mixes through scurry hole 222 when the high-speed flow of raw water, through scurry hole 222 reinforce flow state when the concentrated water velocity of flow increases, can effectively prevent concentration polarization phenomenon from taking place, thereby increasing the service life of the reverse osmosis membrane element 100.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (10)

1. The utility model provides a torrent antipollution reverse osmosis membrane element, its characterized in that includes center tube and a plurality of reverse osmosis membrane group, reverse osmosis membrane group is convoluteed on the center tube, seted up a plurality of inlet openings on the pipe wall of center tube, reverse osmosis membrane group is including producing rivers and leading cloth, dense water runner plate and reverse osmosis membrane, it leads cloth to encircle to wrap around in outside the center tube to produce rivers, every adjacent two it leads to be equipped with a membrane face to the reverse osmosis membrane of fifty percent discount between the cloth, reverse osmosis membrane's opposite folding edge is close to the center tube setting, dense water runner plate set up in between reverse osmosis membrane fifty percent discount face, dense water runner plate is crooked wave structure, dense water runner plate's circular arc side has seted up a plurality of flowthrough holes, dense water runner plate with be formed with half circular arc's passageway between the reverse osmosis membrane, the flow-mixing hole is communicated with the channel, and the reverse osmosis membrane is coated with sealant on two sides adjacent to the water flow guide cloth and one side far away from the central pipe.

2. The membrane element of claim 1, wherein the number of reverse osmosis membrane modules is two, three, five or ten.

3. A turbulent anti-fouling reverse osmosis membrane element according to claim 1, wherein the height of the channels is 1-10mm and the spacing between the apexes of two of the channels is 1-10 mm.

4. The membrane element of claim 1, wherein the number of the water inlet holes is four, and each of the water inlet holes is twelve, and the water inlet holes are uniformly distributed around the wall of the central tube and are communicated with the inner cavity of the central tube.

5. The membrane element of claim 1, wherein the flow-through holes have sixteen rows and twenty-four flow-through holes per row.

6. The membrane element of claim 1, further comprising a housing, a water inlet cover and a water outlet cover, wherein the housing is sleeved outside the reverse osmosis membrane group, the water inlet cover and the water outlet cover are respectively installed at two ends of the housing, and two ends of the central tube extend out of the housing and are respectively fixed with the water inlet cover and the water outlet cover.

7. The membrane element of claim 6, wherein the inlet cover has a plurality of uniformly distributed inlets, and the inlets are connected to the channel.

8. The membrane element of claim 7, wherein the number of water inlets is eight.

9. The membrane element of claim 6, wherein the outlet cover is provided with a plurality of uniformly distributed concentrated water outlets and a pure water outlet, the concentrated water outlets are communicated with the channel, and the pure water outlet is communicated with the inner cavity of the central tube.

10. The membrane element of claim 9, wherein the concentrate outlet comprises eight outlets.

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