CN110841483B - Flow guide disc, disc tube type membrane element and processing technology thereof - Google Patents
Flow guide disc, disc tube type membrane element and processing technology thereof Download PDFInfo
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- CN110841483B CN110841483B CN201911169335.5A CN201911169335A CN110841483B CN 110841483 B CN110841483 B CN 110841483B CN 201911169335 A CN201911169335 A CN 201911169335A CN 110841483 B CN110841483 B CN 110841483B
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- 239000012528 membrane Substances 0.000 title claims abstract description 37
- 238000005516 engineering process Methods 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 136
- 238000001746 injection moulding Methods 0.000 claims abstract description 41
- 239000011159 matrix material Substances 0.000 claims abstract description 18
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 16
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 16
- 239000013013 elastic material Substances 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims description 30
- 239000007924 injection Substances 0.000 claims description 30
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 9
- 238000001223 reverse osmosis Methods 0.000 abstract description 15
- 239000010865 sewage Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 7
- 239000003566 sealing material Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 238000000034 method Methods 0.000 description 14
- 239000012815 thermoplastic material Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000001788 irregular Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—Accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
Abstract
The invention provides a flow guide disc, a disc-tube type membrane element and a processing technology thereof, wherein the flow guide disc comprises: a flow guide disc matrix; the center of the flow guide disc matrix is provided with a central hole; the two flow guide surfaces of the flow guide disc parent body are provided with sealing grooves, the sealing grooves and the central hole are coaxial, the sealing grooves are positioned on the periphery of the central hole, and the sealing grooves are used for being embedded with sealing rings; a plurality of through holes are formed in the bottom of the sealing groove, and an injection molding port is formed in the orifice of at least one through hole. Therefore, when the sealing ring is embedded in the sealing groove, the thermoplastic elastic material can be injected into the through hole through the injection molding port, and after the thermoplastic elastic material is cooled, the two sealing rings embedded in the sealing groove are connected into an integral piece through the thermoplastic sealing material; so, in the guiding plate use, can not take place the circumstances that the sealing washer drops or runs the circle. Effectively ensures the sealing effect of the sealing ring, and improves the service life and the sewage treatment efficiency of the disc tube type reverse osmosis membrane.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a flow guide plate, a disc tube type membrane element and a processing technology thereof.
Background
The dish tube type reverse osmosis membrane has strong pollution resistance, flexible operation mode, low requirement on pretreatment process and
reliable effluent quality and the like, and is widely used in the sewage treatment process.
The disc tube type reverse osmosis membrane in the related technology mainly comprises a disc type diaphragm, a flow guide disc, an O-shaped rubber sealing ring and a center
The pull rod, the flange end cover, the lip-shaped sealing ring and the membrane shell are stacked at intervals,
the O-shaped rubber sealing rings are clamped in the sealing ring grooves on the two surfaces of the flow guide disc, are penetrated together by a central pull rod and are arranged in the film
In the shell, two ends are sealed by metal flange end covers, and the raw water pipe, the concentrated water pipe and the water production pipe are connected in turn by connecting the raw water pipe, the concentrated water pipe and the water production pipe
The water is pressurized, and the membrane concentrates and separates the raw water to generate clear water, thereby achieving the effect of water treatment.
However, in the related art, the O-shaped rubber sealing rings on both sides of the disc tube type reverse osmosis membrane and the diversion disc are easy to fall off, thereby causing the problem of poor sealing.
Disclosure of Invention
The invention provides a flow guide disc, a disc-tube type membrane element and a processing technology thereof, and aims to solve the problem that O-shaped rubber sealing rings on two surfaces of a disc-tube type reverse osmosis membrane and a flow guide disc are easy to fall off in the related technology, so that the sealing is not tight.
To achieve the above object, according to a first aspect of the present invention, there is provided a diaphragm, comprising: a flow guide disc matrix;
the center of the flow guide disc parent body is provided with a central hole; the two flow guide surfaces of the flow guide disc parent body are provided with sealing grooves, the sealing grooves and the central hole are coaxial, the sealing grooves are positioned on the periphery of the central hole, and the sealing grooves are used for being embedded with sealing rings;
a plurality of through holes are formed in the bottom of the sealing groove, and an injection molding port is formed in the orifice of at least one through hole.
In an alternative, the cross-sectional area of the injection port is greater than the cross-sectional area of the through-hole.
In an optional mode, the cross-sectional area of the through hole provided with the injection molding opening is larger than that of the through hole not provided with the injection molding opening.
In an alternative, the injection port is located on a side of the sealing groove adjacent to the central hole.
In an alternative, the diameter of the through hole is less than or equal to the width of the sealing groove.
In an alternative, the bottom of the injection nozzle has an inclination.
In an optional mode, the through-hole is 2~20, the mouth of moulding plastics is 2~ 10.
According to a second aspect of the present invention, there is provided a disc tube membrane element comprising:
the sealing element is an integrated piece formed by injection molding of two sealing rings and at least one connecting rib;
and a diaphragm as described above.
According to a third aspect of the invention, a process for processing a disc-tube membrane element is provided, which comprises the following steps:
the injection molding method comprises the following steps of injection molding a flow guide disc matrix, wherein a plurality of through holes are reserved at the bottom of a sealing groove of the flow guide disc matrix, and an injection molding opening is formed at the opening of at least one through hole in the through holes;
embedding a sealing ring in the sealing groove;
and injecting the thermoplastic elastomer in a molten state through the injection molding opening, so that the two sealing rings are connected into a whole piece when the thermoplastic elastomer is cooled.
In an alternative, the bottom of the injection nozzle has an inclination.
The invention provides a flow guide disc, a disc-tube type membrane element and a processing technology thereof, wherein the flow guide disc comprises: a flow guide disc matrix; the center of the flow guide disc matrix is provided with a central hole; the two flow guide surfaces of the flow guide disc parent body are provided with sealing grooves, the sealing grooves and the central hole are coaxial, the sealing grooves are positioned on the periphery of the central hole, and the sealing grooves are used for being embedded with sealing rings; a plurality of through holes are formed in the bottom of the sealing groove, and an injection molding port is formed in the orifice of at least one through hole. Therefore, when the sealing ring is embedded in the sealing groove, the thermoplastic elastic material can be injected into the through hole through the injection molding port, and after the thermoplastic elastic material is cooled, the two sealing rings embedded in the sealing groove are connected into a whole integrated piece through the thermoplastic sealing material; so, in the guiding plate use, can not take place the circumstances that the sealing washer drops or runs the circle. Effectively ensures the sealing effect of the sealing ring, and improves the service life and the sewage treatment efficiency of the disc tube type reverse osmosis membrane.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a diaphragm provided in an embodiment of the present application;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a cross-sectional view taken along line a-a of FIG. 2;
FIG. 4 is another cross-sectional view taken along line a-a of FIG. 2;
FIG. 5 is a schematic structural diagram of a sealing member in a disc-tube membrane element provided in an example of the present application;
FIG. 6 is a top view of a seal in a disc tubular membrane element as provided in an example of the present application;
FIG. 7 is a cross-sectional view taken along line b-b of FIG. 6;
fig. 8 is a cross-sectional view taken along line c-c of fig. 6.
The reference numbers in the figures illustrate:
10-a flow guide disc;
100-a guide disc matrix;
101-a central hole;
102-a sealing groove;
103-a through hole;
104-injection molding mouth;
an alpha-tilt angle;
20-a seal;
201-sealing ring;
202-connecting ribs.
With the above figures, certain embodiments of the invention have been illustrated and described in more detail below. The drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection through intervening media, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "top", "bottom", "side wall", "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention 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 thus, should not be construed as limiting the present invention.
In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.
Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The disc-tube reverse osmosis membrane has strong pollution resistance, flexible operation mode, low requirement on pretreatment process and reliable effluent quality, and is widely applied to sewage treatment engineering.
Disc tube type reverse osmosis membrane on market mainly comprises disc formula diaphragm, the flow guide disc, O type rubber seal, the center pull rod, the flange end cover, lip seal and membrane shell, its major structure is that diaphragm and flow guide disc interval are stacked, O type rubber seal inlays the sealing washer slot of establishing at the flow guide disc both sides, wear together with the center pull rod, arrange the membrane shell in, both ends are sealed with metal flange end cover, connect gradually former water pipe, dense water pipe and production water pipe, through pressurizeing the raw water, the diaphragm filters sewage and produces clear water, thereby realize the processing to sewage.
The current flow guide discs in the market are fixed in sealing ring grooves of the flow guide discs by extruding the flow guide discs in a mode of fastening nuts on a central pull rod, and the O-shaped rings are compressed to achieve a sealing effect; the sealing ring groove is reserved during injection molding of the flow guide disc, the O-shaped ring is installed on the sealing ring groove of the flow guide disc in a manual mode, the flow guide disc is extruded through threads, the O-shaped ring is compressed, and sealing is finally achieved.
In the implementation process, one of the most common faults of the disc tube type reverse osmosis membrane is the phenomenon of ring running of the O-shaped ring, and the reason of the ring running is mainly as follows: a. the torque value of the membrane column is not checked in time, so that the running pressure easily overcomes the extrusion force formed by the elastic modulus of the sealing ring to cause 'ring running'; b. the sealing ring elastic material has poor compressibility, low heat resistance and overlarge pressing force, and in the production process, plane parts appear on two sides of the cross section of the O-shaped sealing ring due to incomplete vulcanization of the material, so that the O-shaped ring runs; c. when the O-shaped ring is installed, the O-shaped ring is not installed in place.
Most of the disc-tube reverse osmosis membranes in the market at present consist of 110 to 210 guide discs, wherein 220 to 420O-shaped rings are needed respectively, and most of the O-shaped rings are assembled and carried manually during installation, so that the assembly qualification rate of the O-shaped rings is reduced; and whether the quality of the O-shaped ring is qualified or not can be timely and accurately judged by staff, so that the low qualification rate of the disc tube type reverse osmosis membrane is caused, and the production cost is increased.
To above-mentioned problem, this application embodiment provides a flow guide plate to solve the phenomenon that the sealing washer drops, "race ring" appears in disc tubular reverse osmosis membrane in sewage treatment.
Fig. 1 is a schematic structural diagram of a diaphragm provided in an embodiment of the present application; FIG. 2 is an enlarged view of a portion of FIG. 1 at A; FIG. 3 is a cross-sectional view taken along line a-a of FIG. 2; fig. 4 is another cross-sectional view taken along line a-a of fig. 2.
Referring to fig. 1 to 4, a diaphragm 10 according to an embodiment of the present application includes: a diaphragm parent body 100;
the center of the diaphragm parent body 100 is provided with a central hole 101; two diversion surfaces of the diversion disc parent body 100 are provided with sealing grooves 102, the sealing grooves 102 and the central hole 101 are coaxial, the sealing grooves 102 are positioned on the periphery of the central hole 101, and the sealing grooves 102 are used for embedding sealing rings;
the bottom of the sealing groove 102 is provided with a plurality of through holes 103, and an orifice of at least one through hole 103 is provided with an injection molding orifice 104.
Specifically, in this embodiment, the flow guide surface of the flow guide disc matrix 100 has a plurality of protrusions, and the plurality of protrusions are arranged in an irregular shape on the flow guide surface; in this embodiment, the plurality of protrusions are arranged on the flow guide surface of the flow guide disc matrix 100 in an irregular shape, and when the flow guide disc 10 is used, a plurality of flow guide channels are formed between the protrusions of the plurality of flow guide discs, so that the passage of sewage is reserved. The bulge that is irregular shape and arranges has guaranteed the torrent of sewage when passing through the water conservancy diversion runner, erodees the diaphragm surface when improving sewage and passing through efficiency, extension diaphragm life-span.
Specifically, in this embodiment, the material of the diaphragm parent body 100 may be one of plastics such as ABS, PC, POM, or the like.
Specifically, in this embodiment, the sealing groove 102 may be a U-shaped groove, and in some optional manners, the width of the U-shaped groove is 1.5-3mm, and the depth is 0.5-3 mm; the radius of the round angle at the bottom of the U-shaped groove is 0.4-0.6 mm.
In some specific embodiments, the through holes 103 are uniformly arranged along the sealing groove 102, and specifically, the through holes 103 may be at least one of circular through holes, square through holes, or irregular through holes.
Specifically, in this embodiment, the injection port 104 may be a semicircular opening.
In the embodiment, when the sealing ring is embedded in the sealing groove 102, the thermoplastic elastic material can be injected into the through hole 103 through the injection port 104, and after the thermoplastic elastic material is cooled, the two sealing rings embedded in the sealing groove 102 are connected into an integral integrated piece through the thermoplastic sealing material; therefore, the situation that the sealing ring falls off or runs cannot occur in the use process of the flow guide disc 10. Effectively ensures the sealing effect of the sealing ring, and improves the service life and the sewage treatment efficiency of the disc tube type reverse osmosis membrane.
In some alternative embodiments, as shown in fig. 3, the cross-sectional area of the injection port 104 is larger than the cross-sectional area of the through hole 103.
In this embodiment, the cross-sectional area of the injection port 104 is set to be larger than the cross-sectional area of the through hole 103, so that the injection of the thermoplastic material can be facilitated when the injection is performed into the through hole 103.
In some alternative embodiments, the cross-sectional area of the through hole 103 with the injection port 104 is larger than the cross-sectional area of the through hole 103 without the injection port 104.
Specifically, in the present embodiment, a part of the through holes 103 of the plurality of through holes 103 is provided with the injection molding opening 104, and another part of the through holes 103 is not provided with the injection molding opening 104; when the thermoplastic material is injected into the through hole 103, the thermoplastic material is injected only into the portion of the through hole 103 where the injection port 104 is opened, and is not injected into the portion of the through hole 103 where the injection port 104 is not opened. Therefore, the thermoplastic material is injected through part of the through holes, the use of the thermoplastic material is saved, and the production cost is reduced; in addition, thermoplastic material is not injected into the through hole 103, part of which is not provided with the injection molding port 104, and the sealing ring is pulled to the flow guide disc matrix 100 under the condition that the thermoplastic material is cooled and shrunk, so that air in the through hole 103 is exhausted, the atmospheric pressure outside the through hole 103 is greater than the atmospheric pressure inside the through hole 103, the sealing ring is tightly embedded in the sealing groove 102 by utilizing the atmospheric pressure, and the phenomenon that the sealing ring falls off is avoided.
In some alternative embodiments, referring to fig. 3 and 4, the injection molding opening 104 is located on a side of the sealing groove 102 adjacent to the central hole 101.
Specifically, in some alternative embodiments, referring to fig. 3 or 4, the injection port 104 may be located on only one side of the diaphragm parent body 100; in other alternative embodiments, injection ports 104 may be located on both sides of diaphragm precursor 100.
In some alternative embodiments, as shown with reference to fig. 3 and 4, the diameter of the through hole 103 is less than or equal to the width of the sealing groove 102.
In this embodiment, the diameter of the through hole 103 is set to be smaller than the width of the sealing groove 102, on one hand, when injection molding is performed, it can be ensured that the through hole 103 is completely filled by injection molding, so that the sealing rings in the sealing grooves 102 on both sides of the diaphragm parent body 100 are connected into an integral whole; in some through holes 103 which are not molded by injection, the sealing ring can be ensured to completely block the through holes 103, so that the phenomenon of air leakage of the through holes 103 is compensated. The tightness of the sealing ring embedded in the sealing groove 102 is improved, and the phenomenon of ring running is avoided.
In some alternative embodiments, as shown in fig. 3 and 4, the bottom of the injection port 104 has an inclination angle α.
In some embodiments, the angle of inclination α is 45-60 °. In the present embodiment, the inclination angle α is provided at the bottom of the injection port 104, so that the flowability of the thermoplastic material during injection molding is improved, and the injection molding efficiency is improved.
In some optional embodiments, the number of the through holes 103 is 2-20, and the number of the injection molding openings 104 is 2-10.
In some specific scenarios, the number of the through holes 103 may be 10, and the 10 through holes 103 are uniformly arranged along the sealing groove 102. Wherein, the openings of the two through holes 103 are provided with injection molding openings 104; in the embodiment, the 2 embedding passages are elliptical, the thermoplastic elastomer can flow into the sealing ring groove on the front surface of the flow guide disc embedding matrix more quickly, the forming time is reduced, and the other 8 embedding passages are special reinforced shapes, so that the sectional area of the embedding passages is increased in the designed bearing range of the whole structure of the flow guide disc embedding matrix, the problem of local shrinkage defect is reduced, and the like, and the sealing ring is prevented from loosening in the using process. In some alternatives, the injection port 104 has a diameter of 2 mm.
In the embodiment, when the sealing ring is embedded in the sealing groove 102, the thermoplastic elastic material can be injected into the through hole 103 through the injection port 104, and after the thermoplastic elastic material is cooled, the two sealing rings embedded in the sealing groove 102 are connected into an integral integrated piece through the thermoplastic sealing material; therefore, the situation that the sealing ring falls off or runs cannot occur in the use process of the flow guide disc 10. Effectively ensures the sealing effect of the sealing ring, and improves the service life and the sewage treatment efficiency of the disc tube type reverse osmosis membrane.
FIG. 5 is a schematic structural diagram of a sealing member in a disc-tube membrane element provided in an example of the present application; FIG. 6 is a top view of a seal in a disc tubular membrane element as provided in an example of the present application; FIG. 7 is a cross-sectional view taken along line b-b of FIG. 6; fig. 8 is a cross-sectional view taken along line c-c of fig. 6.
Based on the foregoing embodiments, as illustrated with reference to fig. 5-8, in another embodiment of the present application, there is provided a dish tubular membrane element comprising:
the sealing element 20 is an integral part formed by injection molding of two sealing rings 201 and at least one connecting rib 202;
and a diaphragm 10 as provided in any of the alternative embodiments of the previous embodiments.
Specifically, in this embodiment, the sealing ring 201 may be an O-ring made of a TPE material, and the diameter of the sealing ring 201 is greater than or equal to the depth of the U-shaped sealing groove 102.
Specifically, in the present embodiment, the connection rib 202 may be formed by injecting the thermoplastic elastomer into the through hole 103 through the injection port 104 in the two-shot injection molding machine. After the injection molding is completed, the two seal rings 201 and the plurality of connecting ribs 202 are injection molded as a single piece.
In this embodiment, as shown in fig. 5, after the sealing rings 201 are connected with the connecting ribs 202 to form an integrated piece, since the connecting ribs 202 tightly pull the two sealing rings 201 in the sealing grooves 102, the phenomenon of "ring running" of the sealing rings 201 is avoided, the installation yield of the sealing rings 201 is improved, and the service life of the disc-tube membrane element and the efficiency of sewage treatment are improved.
Based on the foregoing embodiment, another embodiment of the present application provides a process for processing a disc-tube membrane element, including:
the injection molding method comprises the following steps of injection molding a flow guide disc matrix, wherein a plurality of through holes are reserved at the bottom of a sealing groove of the flow guide disc matrix, and an injection molding opening is formed at the opening of at least one through hole in the through holes;
embedding a sealing ring in the sealing groove;
and injecting the thermoplastic elastomer in a molten state through the injection molding opening, so that the two sealing rings are connected into a whole piece when the thermoplastic elastomer is cooled.
In some alternative embodiments, the bottom of the injection port has an inclination.
In the embodiment, when the sealing ring is embedded in the sealing groove 102, the thermoplastic elastic material can be injected into the through hole 103 through the injection port 104, and after the thermoplastic elastic material is cooled, the two sealing rings embedded in the sealing groove 102 are connected into an integral integrated piece through the thermoplastic sealing material; therefore, the situation that the sealing ring falls off or runs cannot occur in the use process of the flow guide disc 10. Effectively ensures the sealing effect of the sealing ring, and improves the service life and the sewage treatment efficiency of the disc tube type reverse osmosis membrane.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A diaphragm, comprising: a flow guide disc matrix; the center of the flow guide disc parent body is provided with a central hole; the two flow guide surfaces of the flow guide disc parent body are provided with sealing grooves, the sealing grooves and the central hole are coaxial, the sealing grooves are positioned on the periphery of the central hole, and the sealing grooves are used for being embedded with sealing rings;
a plurality of through holes are formed in the bottom of the sealing groove, and injection molding openings are formed in the orifices of part of the through holes; the bottom of the injection molding opening is provided with an inclination angle;
the through hole provided with the injection molding opening is internally injected with a connecting rib made of thermoplastic elastic material, and the connecting rib is used for connecting and embedding the sealing rings in the two sealing grooves.
2. Flow deflector according to claim 1, wherein the cross-sectional area of the injection orifice is larger than the cross-sectional area of the through-hole.
3. The flow guide disc of claim 1, wherein the cross-sectional area of the through hole provided with the injection port is larger than the cross-sectional area of the through hole not provided with the injection port.
4. The diaphragm of claim 1 wherein the injection port is located on a side of the sealing groove proximate the central aperture.
5. Flow deflector according to claim 1, wherein the diameter of the through-hole is smaller than or equal to the width of the sealing groove.
6. Flow deflector according to any of claims 1-5, wherein the number of through-holes is 2-20 and the number of injection openings is 2-10.
7. A disc tube membrane element, comprising:
the sealing element is an integrated piece formed by injection molding of two sealing rings and at least one connecting rib;
and a diaphragm as claimed in any one of claims 1 to 6.
8. A processing technology of a disc-tube membrane element is characterized by comprising the following steps:
the injection molding method comprises the following steps of injection molding a flow guide disc matrix, wherein a plurality of through holes are reserved at the bottom of a sealing groove of the flow guide disc matrix, and an injection molding opening is formed at the opening of at least one through hole in the through holes; the bottom of the injection molding opening is provided with an inclination angle;
embedding a sealing ring in the sealing groove;
and injecting the thermoplastic elastomer in a molten state through the injection molding opening, so that the two sealing rings are connected into a whole piece when the thermoplastic elastomer is cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911169335.5A CN110841483B (en) | 2019-11-26 | 2019-11-26 | Flow guide disc, disc tube type membrane element and processing technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911169335.5A CN110841483B (en) | 2019-11-26 | 2019-11-26 | Flow guide disc, disc tube type membrane element and processing technology thereof |
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| CN110841483A CN110841483A (en) | 2020-02-28 |
| CN110841483B true CN110841483B (en) | 2022-04-12 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594691A (en) * | 2020-06-04 | 2020-08-28 | 中塑模塑有限责任公司 | Integrated flow guide disc with sealing ring coated together |
| CN113578054A (en) * | 2021-08-30 | 2021-11-02 | 江西林斯特净水设备有限公司 | DTro flow guiding disc |
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| CN2461945Y (en) * | 2001-02-09 | 2001-11-28 | 李相才 | Insulating tie rod of railway rail |
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| CN207546243U (en) * | 2017-11-08 | 2018-06-29 | 北京沧浪清源环保科技有限责任公司 | For the flow guiding disc of disc tube reverse osmosis (dt-ro) component |
| CN209155548U (en) * | 2018-08-02 | 2019-07-26 | 昆山荣兰贸易有限公司 | Composite guide flow table |
| CN209576330U (en) * | 2018-12-12 | 2019-11-05 | 烟台金正环保科技有限公司 | A kind of novel guide disk for dish tubular membrane column |
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| CN2461945Y (en) * | 2001-02-09 | 2001-11-28 | 李相才 | Insulating tie rod of railway rail |
| CN205659570U (en) * | 2015-08-14 | 2016-10-26 | 内蒙古天一环境技术有限公司 | A flow guide disc subassembly for dielectrophoresis dish tubular membrane assembly |
| CN207546243U (en) * | 2017-11-08 | 2018-06-29 | 北京沧浪清源环保科技有限责任公司 | For the flow guiding disc of disc tube reverse osmosis (dt-ro) component |
| CN209155548U (en) * | 2018-08-02 | 2019-07-26 | 昆山荣兰贸易有限公司 | Composite guide flow table |
| CN209576330U (en) * | 2018-12-12 | 2019-11-05 | 烟台金正环保科技有限公司 | A kind of novel guide disk for dish tubular membrane column |
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| CN110841483A (en) | 2020-02-28 |
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Denomination of invention: A guide plate, disc tube type membrane element and its processing technology Effective date of registration: 20231204 Granted publication date: 20220412 Pledgee: Chengdu SME financing Company Limited by Guarantee Pledgor: Chengdu Meifote Membrane Environmental Protection Technology Co.,Ltd. Registration number: Y2023980068544 |
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