CN213725815U - End cap for membrane element and membrane module comprising same - Google Patents
End cap for membrane element and membrane module comprising same Download PDFInfo
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- CN213725815U CN213725815U CN202022609446.8U CN202022609446U CN213725815U CN 213725815 U CN213725815 U CN 213725815U CN 202022609446 U CN202022609446 U CN 202022609446U CN 213725815 U CN213725815 U CN 213725815U
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Abstract
The utility model provides an end cover, which comprises a supporting framework, a flow guide piece and a fastener, wherein the flow guide piece is arranged on the supporting framework and is used for guiding the fluid flowing through a membrane element; the fastener is arranged on the supporting framework and used for reinforcing the connection between the membrane element and the supporting framework. Through the design of the supporting framework and the design of the fastening piece, the connection strength between the end cover and the membrane element is better, so that the membrane assembly can bear the high water inlet pressure or the high pressure difference after the membrane is blocked, and the service life of the membrane assembly is greatly prolonged. The utility model discloses still disclose a membrane module, including film element and above-mentioned end cover for the film element, the end cover setting is at the film element tip for the film element, the fastener cover is established on the film element, and fastener and film element contact set up, can strengthen the joint strength of end cover and film element to the life of extension membrane module has great using value.
Description
Technical Field
The utility model relates to a membrane separation technical field, concretely relates to membrane component is with end cover and contain membrane module of this end cover.
Background
The membrane filtration is a solid-liquid separation technology, and is a technology for filtering water by membrane pores to intercept impurities in the water without chemical change and simple treatment.
In the prior art, the types of membranes are various, and for a roll-type membrane module, the membrane module is generally assembled by components such as a membrane shell (epoxy glass fiber reinforced plastic outer shell), a membrane element, an end cover and the like. The end cover of the roll-type membrane element mainly plays a role in supporting the whole membrane element and guiding inflow water of the membrane element. The connection strength of the end cap and the membrane element is the key of the stability of the membrane module.
The end cover in the prior art consists of an inner ring, an outer ring and a guide plate for connecting the inner ring and the outer ring, wherein the outer ring in part of the end cover is provided with a brim, but the end cover is not physically connected with a membrane element, and the end cover needs to be fixed by a membrane shell. When the membrane product is used, the end cover is often separated from the membrane element due to the action of high water inlet pressure or high pressure difference after membrane fouling and blocking, so that the membrane element is damaged, the service life of the membrane element is shortened, and the use cost is increased.
In conclusion, the design of the end cover which is simple in structure, convenient to use and capable of enhancing the connection strength of the membrane module and the membrane module comprising the end cover are of great significance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an end cover for film element that the structure is retrencied, convenient to use and can strengthen membrane module joint strength, concrete technical scheme is as follows:
an end cap for a membrane element, the end cap comprising a support frame, a flow guide, and a fastener;
the flow guide piece is arranged on the support framework and is used for guiding the fluid flowing through the membrane element;
the fastener is arranged on the supporting framework and used for reinforcing the connection between the membrane element and the supporting framework.
Preferably, in the above aspect, the fastening member is a sheet-like or ring-like structure extending from the support frame, and the fastening member and the membrane element are arranged in the same length direction; the fastener with the support chassis is integrated structure or detachable structure. The fastening piece is made of resin, rubber or metal.
In the above aspect, it is preferable that the fastener includes a curtain portion including at least two curtain plates juxtaposed in a circumferential direction of the membrane element. The inner wall of the fastener, which is contacted with the membrane element, is a smooth plane or a non-smooth plane provided with salient points. The surface of the fastener, which is in contact with the membrane shell, is a non-smooth plane provided with salient points.
Preferably, in the above scheme, the support framework comprises an inner ring framework and an outer ring framework, the flow guide piece comprises one flow guide piece or at least two flow guide pieces, and the flow guide piece is connected with the inner ring framework and the outer ring framework; the plurality of flow deflectors are uniformly distributed along the central axis of the membrane element.
In the above scheme, preferably, the flow deflector is one of a fan blade plate and a honeycomb pore plate; the outer ring framework is provided with a mounting groove for mounting a sealing element, and at least one exhaust hole is formed in the mounting groove; the exhaust holes are at least one of round, square and star-shaped.
The end cover comprises a supporting framework, a flow guide piece and a fastening piece, wherein the flow guide piece is arranged on the supporting framework and is used for guiding the fluid flowing through the membrane element; the fastener is arranged on the supporting framework and used for reinforcing the connection between the membrane element and the supporting framework. Through the design of the supporting framework and the design of the fastening piece, the connection strength between the end cover and the membrane element is better, so that the membrane assembly can bear the high water inlet pressure or the high pressure difference after the membrane is blocked, and the service life of the membrane assembly is greatly prolonged.
The utility model discloses still disclose a membrane module, including film element and above-mentioned end cover for the film element, the end cover setting is at the film element tip for the film element, the fastener cover is established on the film element, and fastener and film element contact set up, can strengthen the joint strength of end cover and film element to the life of extension membrane module has great using value.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
FIG. 1 is a schematic structural view of a membrane module according to a preferred embodiment of the present invention (membrane housing is not shown);
FIG. 2 is a perspective view of the end cap of FIG. 1;
FIG. 3 is a view from the direction A of FIG. 2;
FIG. 4 is a right side view of FIG. 3;
FIG. 5 is an enlarged view of a portion of the fastener of FIG. 2;
FIG. 6 is a schematic diagram showing the change of salt rejection ratio of example 1 and the prior art;
the structure comprises an end cover 1, an outer ring framework 1.1, a supporting framework 1.11, an outer ring framework 1.12, an inner ring framework 1.13, a mounting groove 1.2, a flow guide piece 1.3, a fastener 1.31, a curtain part B, a curtain plate 2, a membrane element 2.1, a membrane roll 2.2 and a central tube.
Detailed Description
The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example 1:
a membrane module, detailed in fig. 1, comprises a membrane housing (typically an epoxy glass reinforced plastic housing), an end cap 1, and a membrane element 2, specifically:
the membrane element 2 consists of a central tube 2.2 and a membrane roll 2.1 arranged on the central tube 2.2, and the membrane roll is formed by rolling a seawater desalination membrane.
The two ends of the membrane element 2 are respectively provided with an end cover 1, and the membrane element and the end covers are sleeved with the membrane shell.
The end cap 1 in this embodiment is made of ABS resin, and its structure is shown in fig. 2-4, specifically:
the end cover 1 comprises a support framework 1.1, a flow guide piece 1.2 and a fastening piece 1.3, wherein the flow guide piece 1.2 is arranged on the support framework 1.1 and is used for guiding fluid flowing through the membrane element; the fastening element 1.3 is arranged on the support frame 1.1 for strengthening the connection between the membrane element and the support frame 1.1, as follows:
the support framework 1.1 comprises an inner ring framework 1.11 and an outer ring framework 1.12, the flow guide piece 1.2 comprises one flow guide piece or at least two flow guide pieces (eight flow guide pieces are illustrated in figures 2-4), and the flow guide pieces are connected with the inner ring framework 1.11 and the outer ring framework 1.12; the plurality of flow deflectors are uniformly distributed along the central axis of the membrane element. Here, the inner ring frame and the outer ring frame are both in regular ring shapes (such as circular ring shapes). The central tube 2.2 is inserted into the central hole of the inner ring framework 1.11.
The fastening piece 1.3 is a sheet-shaped or annular structure extending from the supporting framework 1.1, and the fastening piece 1.3 and the membrane element are arranged in the same length direction; fastener 1.3 with support skeleton 1.1 is integrated structure or detachable structure, can select according to actual demand. The length L of the fastener 1.3 is here preferably 2-35 mm.
In addition, the fastening element 1.3 comprises a curtain portion 1.31, the curtain portion 1.31 comprising at least two curtains B (preferably 4-68, 48 schematically shown in fig. 2-4) juxtaposed in the circumferential direction of the membrane element, the distance d between two adjacent curtains being 0.5-10mm, the length L1 of the curtain in the longitudinal direction of the membrane element being 2-100mm, see fig. 5 in detail. The fastener can be properly stretched and contracted along the membrane element, so that the friction between the fastener and the contact part of the membrane element is increased, and the connection strength between the end cover and the membrane element is enhanced.
The inner wall of the fastening element 1.3 in contact with the membrane element in this embodiment is a smooth plane.
In this embodiment, the guide vane is one of a fan blade plate and a honeycomb pore plate, and may be of another structure, so that the flow guide may be implemented. The outer ring framework 1.12 is also provided with a mounting groove 1.13 for mounting a sealing element (such as an annular sealing ring), which is shown in detail in fig. 2. At least one exhaust hole is further formed in the mounting groove 1.13, so that the sealing effect is enhanced; the exhaust holes may be at least one of circular, square, and star-shaped.
The membrane module obtained in this embodiment and the membrane module in the prior art (using the end cap in the prior art) are subjected to a long-time high-pressure operation test, and the specific test method is as follows: the method comprises the steps of taking 32000mg/L NaCl solution as inlet water, controlling the water temperature to be 25 +/-2 ℃, controlling the operating pressure to be 55bar, setting the recovery rate to be 15%, continuously operating a single membrane module, periodically testing parameters such as the conductivity and the flow rate of produced water (see the prior art), calculating the change condition of the desalination rate, and having the effect as shown in figure 6, wherein as can be seen from figure 6, the desalination rate of the membrane module in the prior art is rapidly reduced after the membrane module is operated for 10 days under high pressure for a long time, which indicates that the membrane module is damaged under high pressure, and the structural strength of the membrane module is poor; after the membrane module prepared by the embodiment runs for 30 days, the desalination rate of the membrane module has no obvious change, which shows that the basic structure of the membrane module is not damaged under high pressure, and the membrane module has better strength.
The tensile strength between the end cap and the membrane body of the membrane module of this example was tested, and the results are shown in table 1.
Example 2:
the present embodiment is different from embodiment 1 in that: the inner wall of the fastener, which is contacted with the membrane element, is a non-smooth plane provided with salient points (the shape of the salient points is hemispherical and the like). The friction between the contact part of the fastener and the membrane element can be increased, and the connection strength between the end cover and the membrane element is enhanced.
The tensile strength between the end cap and the membrane body of the membrane module of this example was tested, and the results are shown in table 1.
Example 3:
this example differs from example 1 in that: the inner wall of the fastener, which is contacted with the membrane element, is a non-smooth plane provided with salient points (the shape of the salient points is hemispherical and the like); the surface of the fastener, which is in contact with the epoxy glass fiber reinforced plastic shell, is a non-smooth plane provided with salient points. The friction between the contact part of the fastening piece and the epoxy glass fiber reinforced plastic shell and the friction between the contact part of the fastening piece and the membrane element can be simultaneously increased, so that the connection strength between the end cover and the membrane element can be enhanced.
The tensile strength between the end cap and the membrane body of the membrane module of this example was tested, and the results are shown in table 1.
TABLE 1 test results of tensile strength between end caps and membrane elements obtained in accordance with the prior art and the present invention in examples 1-3
Note: the test results are the average of 100 random tests performed on each sample.
As can be seen from Table 1, the tensile strength of the membrane module is greatly improved by using the end cap provided with the fastener of the present invention (examples 1-3); the convex points are additionally arranged on the inner wall and/or the outer wall of the fastener to form a non-smooth plane, so that the tensile strength of the membrane component is further improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An end cap for a membrane element, characterized in that the end cap (1) comprises a supporting skeleton (1.1), a flow guide (1.2) and a fastening element (1.3);
the flow guide piece (1.2) is arranged on the support framework (1.1) and is used for guiding the fluid flowing through the membrane element;
the fastening element (1.3) is arranged on the support frame (1.1) and is used for reinforcing the connection between the membrane element and the support frame (1.1).
2. An end cap for a membrane element according to claim 1, characterized in that the fastening member (1.3) is a sheet-like or ring-like structure extending from the support frame (1.1), the fastening member (1.3) and the membrane element being arranged in the same length direction.
3. An end cap for a membrane element according to claim 1, characterized in that the fastening member (1.3) is of an integrated or detachable construction with the support frame (1.1).
4. An end cap for a membrane element according to any one of claims 1-3, characterized in that the fastening (1.3) comprises a curtain portion (1.31), and that the curtain portion (1.31) comprises at least two curtains arranged side by side in the circumferential direction of the membrane element.
5. An end cap for a membrane element according to claim 1, characterized in that the inner wall of the fastening element (1.3) that is in contact with the membrane element is a smooth plane or a bumped non-smooth plane.
6. An end cap for a membrane element according to claim 5, characterized in that the surface of the fastening element (1.3) in contact with the membrane housing is a bumpy non-smooth surface.
7. An end cap for membrane elements according to claim 1, characterized in that the support frame (1.1) comprises an inner ring frame (1.11) and an outer ring frame (1.12), and the flow guide (1.2) comprises one flow guide or at least two flow guides, which connect the inner ring frame (1.11) and the outer ring frame (1.12); the plurality of flow deflectors are uniformly distributed along the central axis of the membrane element.
8. The end cap for a membrane element of claim 7, wherein the flow deflector is one of a fan blade plate and a honeycomb pore plate; an installation groove (1.13) for installing a sealing element is formed in the outer ring framework (1.12), and at least one exhaust hole is formed in the installation groove (1.13); the exhaust holes are at least one of round, square and star-shaped.
9. Membrane module, comprising a membrane element (2) and an end cap for a membrane element according to any one of claims 1-8, which end cap for a membrane element is arranged at an end of the membrane element (2), and the fastening element (1.3) is arranged to fit over the membrane element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022609446.8U CN213725815U (en) | 2020-11-12 | 2020-11-12 | End cap for membrane element and membrane module comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022609446.8U CN213725815U (en) | 2020-11-12 | 2020-11-12 | End cap for membrane element and membrane module comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213725815U true CN213725815U (en) | 2021-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022609446.8U Active CN213725815U (en) | 2020-11-12 | 2020-11-12 | End cap for membrane element and membrane module comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213725815U (en) |
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- 2020-11-12 CN CN202022609446.8U patent/CN213725815U/en active Active
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Address after: 412007 4th Torch Road, Liyu Industrial Park, Tianyuan District, Zhuzhou City, Hunan Province Patentee after: Hunan Aowei Technology Co.,Ltd. Address before: 412007 4th Torch Road, Liyu Industrial Park, Tianyuan District, Zhuzhou City, Hunan Province Patentee before: HUNAN OVAY TECHNOLOGY Co.,Ltd. |