CN111318175A - Spiral wound membrane module and water purification system - Google Patents
Spiral wound membrane module and water purification system Download PDFInfo
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- CN111318175A CN111318175A CN202010105797.7A CN202010105797A CN111318175A CN 111318175 A CN111318175 A CN 111318175A CN 202010105797 A CN202010105797 A CN 202010105797A CN 111318175 A CN111318175 A CN 111318175A
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- extension arm
- wall
- central tube
- end cover
- water
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- 239000012528 membrane Substances 0.000 title claims abstract description 112
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 238000000746 purification Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims description 27
- 230000000670 limiting effect Effects 0.000 claims description 22
- 230000002093 peripheral effect Effects 0.000 claims description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 16
- 239000004743 Polypropylene Substances 0.000 claims description 14
- 239000003292 glue Substances 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 12
- 238000000108 ultra-filtration Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- -1 polypropylene Polymers 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 239000003575 carbonaceous material Substances 0.000 claims description 6
- 229910010293 ceramic material Inorganic materials 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000012466 permeate Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 38
- 230000010354 integration Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 33
- 239000002184 metal Substances 0.000 description 24
- 239000004033 plastic Substances 0.000 description 11
- 229920003023 plastic Polymers 0.000 description 11
- 238000004804 winding Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001223 reverse osmosis 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
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/10—Spiral-wound membrane modules
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/26—Further operations combined with membrane separation processes
- B01D2311/2649—Filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/08—Flow guidance means within the module or the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention provides a spiral-wound membrane module and a water purification system, wherein the spiral-wound membrane module comprises: the central pipe (102), the central pipe (102) is a cylindrical structure, the cylindrical structure comprises an inner wall (102d) and an outer wall (102e), the radial inner side of the central pipe (102) is provided with a cavity (102f), and the central pipe (102) is made of filter material capable of allowing fluid to pass through so as to allow the fluid to pass from the outer wall (102e) to the inner wall (102d) and reach the cavity (102 f); a rear filter element (106) is also arranged in the cavity (102 f). The invention can form the function of primary filtration through the central tube, realizes the integration of the structural functions of the central tube, not only can support the roll-type membrane and collect produced water, but also can realize the filtration function, reduces the increase of the volume of the filter element, and is beneficial to effectively reducing the volume of the whole machine.
Description
Technical Field
The invention belongs to the technical field of water purification, and particularly relates to a spiral-wound membrane module and a water purification system.
Background
The existing roll-type membrane elements need to be wound on a central tube for preparing plastic pieces, and the central tube plays a role in supporting the roll-type membrane and collecting produced water. In addition, when the roll-type membrane is used, the rear end of the roll-type membrane is required to be connected in series to improve the filter element in taste, so that the number of stages of the filter element is increased, and the volume of the whole machine is not reduced.
Because the central tube in the water purifier in the prior art is used for supporting the roll-type membrane and collecting produced water, and the rear end of the central tube needs to be connected with a series taste-improving filter element, the stage number of the filter element is increased, the volume of the whole water purifier is not reduced, and the like, the invention researches and designs the roll-type membrane module and the water purification system.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defects that the filtration effect needs to be improved and the number of filter element stages needs to be increased to increase the volume due to the single function of the central tube of the water purifier in the prior art, thereby providing a rolled membrane module and a water purification system.
The invention provides a rolled membrane module, wherein: comprises a central tube, a central tube and a plurality of guide rails,
the central tube is of a cylindrical structure and comprises an inner wall and an outer wall, a cavity is formed in the radial inner side of the central tube, and the central tube is made of filter material capable of allowing fluid to pass through so as to allow the fluid to pass from the outer wall to the inner wall and reach the cavity, or allow the fluid to pass through from the cavity to the outer wall through the inner wall; and a post-positioned filter element is also arranged in the cavity.
Preferably, the first and second electrodes are formed of a metal,
the filter material that can allow the fluid to pass through includes: at least one of a carbon material, a polypropylene pp material and a ceramic material; and/or the post-filter element is an ultrafiltration filter element and is provided with an exhaust hole; and/or a support sleeve with a cylindrical structure is further arranged on the inner side of the inner wall of the central tube, so that the cavity is located on the inner side of the support sleeve, and at least one water through hole is further formed in the support sleeve.
Preferably, the first and second electrodes are formed of a metal,
the central tube is of a cylindrical carbon rod structure consisting of the carbon material; or the central pipe is of a cylindrical PP structure made of the polypropylene PP material; or the central tube is of a cylindrical ceramic tube structure made of the ceramic material.
Preferably, the first and second electrodes are formed of a metal,
the water filter further comprises a roll-up membrane wound around the periphery of the central tube, wherein the roll-up membrane can allow water to pass through and filter the water.
Preferably, the first and second electrodes are formed of a metal,
the first end cover is arranged at one axial end of the central pipe and can seal the axial end of the central pipe; and/or the presence of a gas in the gas,
the water outlet joint is arranged on the radial inner side of the second end cover so as to allow water in the central pipe to flow out of the water outlet joint.
Preferably, the first and second electrodes are formed of a metal,
first end cover is including being located radial outside and along the first extension arm of axial direction extension and being located radial inboard and along the second extension arm of axial direction extension, first extension arm with it is right to form between the second extension arm the space that the card was established is carried out to the inner wall and the outer wall of center tube.
Preferably, the first and second electrodes are formed of a metal,
the second extension arm is attached to and clamped on the inner wall of one axial end of the central tube; the outer wall of the central tube is provided with a first step at the position of one axial end, and the first extension arm is clamped with the first step so that the outer peripheral surface of the first extension arm is flush with the outer peripheral surface of the central tube.
Preferably, the first and second electrodes are formed of a metal,
a film rolling clamping groove for rolling the film is formed in the center of the first end cover in the axial direction of the central tube; and/or a first fixing rib is further axially arranged between the first extension arm and the second extension arm of the first end cover in an extending manner, a fixing groove is also axially and concavely arranged at one axial end of the central tube, and the first fixing rib and the fixing groove can be clamped and positioned; and/or the direction of the first end cover opposite to the extending direction of the first extending arm and the second extending arm is also convexly provided with at least one first limiting rib.
Preferably, the first and second electrodes are formed of a metal,
the second end cover is including being located radial outside and along the third extension arm that axial direction extends and being located radial inboard and along the fourth extension arm that axial direction extends, the third extension arm with form between the fourth extension arm and can be right the center tube the space that the card was established is carried out to the inner wall and the outer wall of the axial other end.
Preferably, the first and second electrodes are formed of a metal,
the fourth extension arm is attached and clamped on the inner wall of the other end of the central tube in the axial direction; and/or a second step is further formed at the position of the other end of the central tube in the axial direction, and the third extension arm is clamped at the outer peripheral wall of the second step, so that the outer peripheral surface of the third extension arm is flush with the outer peripheral surface of the central tube.
Preferably, the first and second electrodes are formed of a metal,
a second fixing rib is further axially arranged between the third extension arm and the fourth extension arm of the second end cover in an extending manner, a fixing groove is further axially and concavely arranged at the other axial end of the central tube, and the second fixing rib can be clamped and limited with the fixing groove; and/or a second limiting rib is further arranged on the inner side of the fourth extension arm of the second end cover in a radially protruding manner, a first step structure is formed at the connecting part of the second limiting rib and the fourth extension arm, and the first step structure can limit and/or position the water outlet connector; and the free end of the second limiting rib is formed into a limiting structure, and a second step structure which can be matched and clamped with the limiting structure is formed on the outer peripheral wall of the rear filter element.
Preferably, the first and second electrodes are formed of a metal,
the connecting part between the first end cover and the central pipe is also connected through bonding; and/or the joint part between the second end cover and the central pipe is also connected by bonding; and/or the roll film is wound at one axial end of the central tube and is arranged at the periphery of the first end cover; and/or the roll film is wound and arranged at the outer periphery of the second end cover at the other axial end of the central pipe.
Preferably, the first and second electrodes are formed of a metal,
the roll-type membrane comprises a roll-type membrane, a glue line, a water production separation net and a water inlet separation net, the roll-type membrane comprises a separation layer and a non-separation layer, the roll-type membrane is folded at the separation layer, the water inlet separation net is placed in the folded position of the roll-type membrane, one surface of the non-separation layer is overlapped with the water production separation net, and the glue line is arranged on the inner peripheral side of the roll-type membrane and at a position opposite to the first end cover and/or the second end cover.
The invention also provides a water purification system comprising the spiral wound membrane module of any one of the preceding claims.
The spiral-wound membrane module and the water purification system provided by the invention have the following beneficial effects:
1. according to the invention, the central tube of the water purifier is made of the filter material which can allow fluid to pass through, so that water can flow through the central tube made of the filter material, and a primary filtering effect is formed on water, so that compared with a structure in the prior art that the filter effect is improved and the filter element technology needs to be added, the primary filtering effect can be formed through the central tube, the integration of the structural function of the central tube is realized, the central tube can support a roll-type membrane and collect produced water, and can also realize the filtering effect, the increase of the volume of the filter element is effectively reduced, and the effective reduction of the volume of the whole machine is facilitated;
2. the invention can abandon the plastic piece central tube used by the existing roll type membrane, avoid the use of the plastic piece central tube of the existing roll type membrane element, and realize that one membrane element has two-stage filtering function; the carbonaceous central tube is utilized, so that the subsequent reuse of the taste filter element can be avoided, and the membrane element integrates two-stage filtering functions of a fine filtering filter element and a rear taste filter element; the carbonaceous central tube does not have macroscopic macropore, and its surface is covered with structural micropore, compares in the visual macroporous central tube of traditional working of plastics, and roll-type diaphragm produced water is collected more easily.
Drawings
FIG. 1 is a schematic sectional front view of a rolled membrane module of the present invention having a center tube;
FIG. 2a is a cross-sectional structural view of the base pipe of FIG. 1;
FIG. 2b is a left side view block diagram of the center tube of FIG. 2 a;
FIG. 3a is a cross-sectional structural view of the first end cap of FIG. 1;
FIG. 3b is a left side view block diagram of the first endcap of FIG. 3 a;
FIG. 4 is a cross-sectional structural view of the second end cap of FIG. 1;
FIG. 5 is a schematic view of a rolled membrane deployment configuration of a rolled membrane module of the present invention having a central tube;
FIG. 6 is a schematic structural view of the support sleeve of the present invention;
fig. 7 is a schematic view of the rear cartridge of the present invention.
The reference numbers in the figures denote:
101. a first end cap; 101a, a film rolling clamping groove; 101b, a first fixing rib; 101c, a first limiting rib; 101d, a first extension arm; 101e, a second extension arm; 102. a central tube; 102a, a first step; 102b, a second step; 102c, a fixing groove; 102d, an inner wall; 102e, an outer wall; 102f, a cavity; 103. rolling the membrane; 104. a second end cap; 104a and a second limiting rib; 104b, second fixing ribs; 104c, a third extension arm; 104d, a fourth extension arm; 104e, a limiting structure; 105. a water outlet joint; 106. a post-positioned filter element; 106a, an exhaust hole; 106b, a second step structure; 201. rolling the membrane; 202. glue lines; 202a, a water through hole; 202b, a support sleeve; 203. produce water and separate the net.
Detailed Description
As shown in fig. 1 to 5, the present invention provides a spiral wound membrane module, which includes a central tube, wherein the central tube 102 is a cylindrical structure, the cylindrical structure includes an inner wall 102d and an outer wall 102e, a cylindrical support sleeve 202b is further disposed on the radially inner side of the central tube 102, the inner wall of the support sleeve 202b has a cavity 102f, the support sleeve 202b is further provided with at least one water through hole 202a penetrating through the inner wall and the outer wall of the support sleeve, and the central tube 102 is made of a filter material capable of allowing a fluid to pass through (preferably permeable) so as to allow the fluid to pass from the cavity to the outer wall 102e via the support sleeve 202b and the inner wall 102d, or pass from the outer wall 102e to the inner wall 102d and pass through the support sleeve 202b to reach the cavity 102 f; and a rear filter element 106 is also arranged in the cavity 102 f.
According to the invention, the central tube of the water purifier is made of the filter material which can allow fluid to pass through, so that water can flow through the central tube made of the filter material, and a primary filtering effect is formed on water, so that compared with a structure in the prior art that the filter element technology is required to be added for improving the filtering effect, the primary filtering effect can be formed through the central tube, the integration of the structural function of the central tube is realized, the central tube can support a roll-type membrane and collect produced water, and can also realize the filtering effect, the increase of the volume of the filter element is effectively reduced, and the effective reduction of the volume of the whole machine is facilitated. The supporting sleeve is arranged on the radial inner side of the inner wall of the central tube, so that a material with a filtering function can be supported (because the material has a filtering function, the structural strength of the material is not enough to support or the supporting strength is not high enough), the effect of firmly fixing the central tube is improved, and a condition is provided for realizing a long-time filtering function; still can filter the rearmounted filter core in the cavity again through setting up rearmounted filter core to the water after the center tube filters to further effectively improve the filter effect.
The existing central tube is a plastic central tube, only the center of the tube is provided with a hole, and other places are closed, so that water produced by the membrane in the non-hole area needs to flow into the hole area along the wall, and the flow path is long; and the membrane with the hole area directly flows out of the membrane hole, and the flow path is short. And the carbon rod is used as the central tube, and because the surface of the carbon rod is distributed with the uniform structural microporous structure, the produced water of the membrane contacted with the carbon rod can be led out into the cavity in time. The post-positioned carbon rod filter element is made into a structural form capable of winding the RO membrane, so that the RO membrane and the post-positioned filter element can be combined, and the one-core two-stage purification function is realized.
Preferably, the first and second electrodes are formed of a metal,
the filter material that can allow the fluid to pass through includes: at least one of a carbon material, a polypropylene pp material and a ceramic material; and/or the post-filter element 106 is an ultrafiltration filter element and is provided with a vent hole 106 a. The filter material is the preferable material of the filter material, and can allow water to pass through and filter; the ultrafiltration filter core is the preferred structural form of the post-filter core, so that the post-ultrafiltration filtering effect can be realized on water, and the filtering effect is improved; the carbon rod cavity is provided with enough space for ultrafiltration exhaust, so that the air hold-out problem of the post-positioned composite filter element directly connected with the carbon rod and ultrafiltration can not occur. The invention can combine the roll-up membrane to realize the three-stage composite filter element of reverse osmosis or nanofiltration, postposition carbon and ultrafiltration, the central tube used in the invention is different from the traditional central tube, and simultaneously has the functions of supporting the membrane, collecting the produced water and filtering and purifying.
Preferably, the first and second electrodes are formed of a metal,
the central tube 102 is a cylindrical carbon rod structure composed of the carbon material; or, the central tube 102 is a cylindrical PP structure made of the polypropylene PP material; alternatively, the central tube 102 is a cylindrical ceramic tube made of the ceramic material. This is the preferred form of the filter structure of the present invention, such as carbon rods, PP cylinders, and ceramic tubes.
The filter material capable of allowing fluid to pass through can comprise: carbon rods, cylindrical polypropylene pp material filter materials, ceramic tubes and the like are preferably used for improving the taste of carbon as the material of the central tube of the roll-type membrane element, so that the plastic central tube used by the existing roll-type membrane can be abandoned, the use of the plastic central tube of the existing roll-type membrane element is avoided, and one membrane element can have two-stage filtering functions; the carbonaceous central tube is utilized, so that the subsequent reuse of the taste filter element can be avoided, and the membrane element integrates two-stage filtering functions of a fine filtering filter element and a rear taste filter element; the carbonaceous central tube does not have macroscopic macropore, and its surface is covered with structural micropore, compares in the visual macroporous central tube of traditional working of plastics, and roll-type diaphragm produced water is collected more easily.
The carbon rod material has brittleness, and a strength supporting cylinder is added in the cavity, so that the strength of the carbon rod central tube can be enhanced.
Preferably, the first and second electrodes are formed of a metal,
the spiral wound membrane module of the invention further comprises a spiral wound membrane 103 wound around the periphery of the central tube 102, wherein the spiral wound membrane 103 can allow water to pass through and filter the water. The roll-type membrane component provided by the invention is rolled by the roll-type membrane by utilizing the central tube (filtering material) with a new structural form, so that the prepared roll-type membrane component has two-stage filtering functions at the same time, water can flow through the central tube made of the filtering material, and a first-stage filtering effect is formed on the water, so that compared with the structure in the prior art that the filtering effect is improved and the filtering core technology is required to be added, the first-stage filtering effect can be formed through the central tube, the integration of the structural function of the central tube is realized, the roll-type membrane can be supported, the produced water can be collected, the filtering effect can also be realized, the increase of the volume of the filter core is effectively reduced, and the.
According to the technical scheme, the water produced by the roll-type membrane is directly contacted with the post-positioned filter element (namely the central tube with the filtering effect), so that the energy loss caused by the long flow path is reduced, the back pressure can be reduced, the beneficial effects are that the water produced by the roll-type membrane is discharged more smoothly, the membrane structure trend can be effectively slowed down, and the water flow in the same membrane area is large.
Preferably, the first and second electrodes are formed of a metal,
a first end cap 101 disposed at one axial end of the center tube 102, the first end cap being capable of sealing the one axial end of the center tube 102; and/or the presence of a gas in the gas,
the water-saving pipe is characterized by further comprising a second end cover 104 clamped at the other axial end of the central pipe 102, wherein a water outlet joint 105 is further connected and arranged on the radial inner side of the second end cover 104 to allow water in the interior of the central pipe 102 to flow out of the water outlet joint 105.
The structural form of the first end cover at one axial end of the central tube and the structural form of the second end cover at the other axial end of the central tube can form a sealing effect on the axial end of the central tube through the first end cover, so that water at the end permeates from the end face of the roll-type membrane 103 and then enters the central tube and the cavity to realize the effect of secondary filtration, the water flowing out through the roll-type membrane 103 is concentrated water, and the water flowing out through the cavity in the central tube is pure water, as shown in fig. 1, the clamping effect and the sealing effect can be performed on the axial other end of the central tube through the second end cover, so that the water can only flow out from a water outlet joint in the central tube (pure water) or flow out from the lower end of the roll-type membrane.
Preferably, the first and second electrodes are formed of a metal,
the first end cap 101 includes a first extension arm 101d located at a radial outer side and extending along an axial direction and a second extension arm 101e located at a radial inner side and extending along the axial direction, and a space capable of clamping an inner wall and an outer wall of the center tube 102 is formed between the first extension arm 101d and the second extension arm 101 e. This is a further preferred form of construction of the first end cap of the invention, which provides a snap-fit connection with the axially one end of the central tube, facilitating assembly and location, by virtue of the provision of the first and second extension arms.
Preferably, the first and second electrodes are formed of a metal,
the second extension arm 101e is attached to and clamped on the inner wall of the axial end of the central tube 102; the outer wall of the center tube 102 is further formed with a first step 102a at a position of one end in the axial direction, and the first extension arm 101d is engaged with the first step 102a such that the outer circumferential surface of the first extension arm 101d is flush with the outer circumferential surface of the center tube 102. The first extension arm and the second extension arm are respectively connected with the inner wall and the outer wall of the central tube in a matching mode, so that the central tube can be effectively clamped, and meanwhile, the outer peripheral surface of the central tube can be flush with the outer peripheral surface of the first extension arm, and the roll-type membrane can be conveniently wound on the outer peripheral surface in a rolling mode.
Preferably, the first and second electrodes are formed of a metal,
a film winding clamping groove 101a for winding the film is further formed in the center position of the first end cover 101 in the axial direction of the central tube 102; and/or a first fixing rib 101b is further axially arranged between the first extension arm 101d and the second extension arm 101e of the first end cover 101 in an extending manner, a fixing groove 102c is also axially and concavely arranged at one axial end of the central tube 102, and the first fixing rib 101b and the fixing groove 102c can form a clamping limit to clamp and fix the end surface of the axial end of the central tube 102; and/or at least one first limiting rib 101c is further convexly arranged in the direction of the first end cover 101 opposite to the extending direction of the first extending arm 101d and the second extending arm 101 e.
The first end cover and the corresponding part of the central tube are provided with a further preferable structural form, and the film rolling clamping groove can allow a shaft of a film rolling machine to be inserted into the film rolling clamping groove when the film is rolled, so that the central tube is driven to rotate, and the film rolling effect of the rolled film is realized; the first fixing ribs and the fixing grooves arranged on the end face of the central tube can form clamping fit between the first fixing ribs and the central tube, and a positioning or limiting effect can be formed when the first end cover and the central tube are assembled, so that the assembling effect is improved; can make first end cover upwards protrusion form protruding structure through first spacing rib to make can pass through water between the arch, make from can normally reaching the up end of roll formula membrane and down flow, guaranteed that normal water flows and flows through.
Preferably, the first and second electrodes are formed of a metal,
the second end cap 104 includes a third extension arm 104c located at the radial outer side and extending along the axial direction and a fourth extension arm 104d located at the radial inner side and extending along the axial direction, and a space capable of clamping the inner wall and the outer wall of the other axial end of the center tube 102 is formed between the third extension arm 104c and the fourth extension arm 104 d. This is a further preferred form of construction of the second end cap of the invention, which allows for snap-fit connection, ease of assembly and location with the axially opposite end of the central tube by the provision of the third and fourth extension arms.
Preferably, the first and second electrodes are formed of a metal,
the fourth extension arm 104d is attached to and clamped on the inner wall of the other axial end of the central tube; and/or a second step 102b is further formed on the outer wall of the central tube 102 at the other axial end, and the third extension arm 104c is clamped on the outer circumferential wall of the second step 102b, so that the outer circumferential surface of the third extension arm 104c is flush with the outer circumferential surface of the central tube 102. The third extension arm and the fourth extension arm are respectively matched and connected with the inner wall and the outer wall of the central tube, so that the central tube can be effectively clamped and simultaneously the outer peripheral surface of the central tube and the outer peripheral surface of the third extension arm can be ensured to be flush, and the roll-type membrane can be conveniently wound on the outer peripheral surface in a roll mode.
Preferably, the first and second electrodes are formed of a metal,
a second fixing rib 104b is further axially arranged between the third extension arm 104c and the fourth extension arm 104d of the second end cover 104 in an extending manner, a fixing groove 102c is also axially and concavely arranged at the other axial end of the central tube 102, and the second fixing rib 104b and the fixing groove 102c can form a clamping limit to clamp and fix an end face of the other axial end of the central tube 102; and/or a second limiting rib 104a is further radially and convexly arranged on the inner side of the fourth extension arm 104d of the second end cover 104, a joint part of the second limiting rib 104a and the fourth extension arm 104d is formed into a first step structure, and the first step structure can be limited and/or positioned with the water outlet joint 105; and the free end of the second limit rib 104a forms a limit structure 104e, and a second step structure 106b which can be matched and clamped with the limit structure 104e is formed on the outer peripheral wall of the rear filter element 106.
The second end cover and the corresponding part of the central tube are provided with further optimized structural forms, the second fixing ribs and the fixing grooves arranged on the end face of the central tube can form clamping fit between the second fixing ribs and the fixing grooves, a positioning or limiting effect can be formed when the first end cover and the central tube are assembled, and the assembling effect is improved; the first step structure at the connecting part of the second limiting rib and the fourth extension arm can limit the water outlet connector to form positioning assembly, so that the assembly effect is improved; the limiting structure at the tail end of the second limiting rib can be in clamping fit with the second step structure on the rear filter element, so that the rear filter element is mounted and assembled; the post-filter element (preferably the ultrafiltration membrane wire end) is installed from the second end cover 104 until the second step structure 106b is pushed to the limit structure 104e to limit, namely, the ultrafiltration installation is finished, and the sealing is realized through an O-shaped ring and the end cover on the shell.
Preferably, the first and second electrodes are formed of a metal,
the joint part between the first end cover 101 and the central tube 102 is also connected by bonding; and/or the joint between the second end cover 104 and the central tube 102 is also connected by bonding; and/or the roll film 103 is wound around the outer circumference of the first end cap 101 at the axial end of the center tube 102; and/or the roll film 103 is wound around the outer circumference of the second end cap 104 at the other axial end of the center tube 102.
First end cover, second end cover respectively with through adhesive connection between the center tube, improved the firm in connection nature between end cover and the center tube, improved sealing strength, the winding of roll up formula membrane can improve winding effect and sealed effect on the end cover. The carbonaceous central pipe has the following assembly form of parts: the first end cap 101 and the second end cap 104 are fixedly connected with the corresponding steps at the two ends of the carbon rod through glue. The water outlet joint 105 is directly arranged in the second end cover 104 after the rolled membrane is rolled, and is used for guiding pure water.
Preferably, the first and second electrodes are formed of a metal,
the roll type membrane 103 comprises a roll type membrane 201, a glue line 202, a water production separation net 203 and a water inlet separation net, the roll type membrane 201 comprises a separation layer and a non-separation layer, the roll type membrane 201 is folded at the separation layer, the water inlet separation net is placed in the folded position of the roll type membrane, one surface of the non-separation layer and the water production separation net 203 are overlapped, and the glue line 202 is arranged on the inner peripheral side of the roll type membrane 103 and at a position opposite to the first end cover 101 and/or the second end cover 104. The spiral membrane is a preferred structural form of the spiral membrane, the water production separation net is wound on the periphery of the central pipe, the spiral membrane is wound on the periphery of the water production separation net, and the glue line is arranged at the corresponding position of the end cover, so that the membrane and the end cover can be connected in a sealing mode through glue.
When the carbonaceous central tube is used for preparing the roll-up membrane, the schematic diagram of the roll-up membrane is shown in figure 5.
Roll up formula diaphragm 201 evenly distributed is close to the end cover position at both ends at carbonaceous center tube, produce water and separate net 203 and roll up formula diaphragm 201 and overlap and put, the rubber thread is beaten and is being close to roll up formula diaphragm 201 and produce water and separate net 203 border position but not with the edge coincidence, need keep the distance with the border line, the rubber thread 202 needs to be beaten on first end cover 101 and second end cover 104 simultaneously, its effect is sealed for realizing roll formula membrane element with the help of the end cover, because if beat on carbonaceous center tube, because it is porous structure, can not realize sealedly.
The invention also provides a water purification system comprising the spiral wound membrane module of any one of the preceding claims.
According to the invention, the central tube of the water purifier is made of the filter material which can allow fluid to pass through, so that water can flow through the central tube made of the filter material, and a primary filtering effect is formed on water, so that compared with a structure in the prior art that the filter effect is improved and the filter element technology needs to be added, the primary filtering effect can be formed through the central tube, the integration of the structural function of the central tube is realized, the central tube can support a roll-type membrane and collect produced water, and can also realize the filtering effect, the increase of the volume of the filter element is effectively reduced, and the effective reduction of the volume of the whole machine is facilitated;
the invention can abandon the plastic piece central tube used by the existing roll type membrane, avoid the use of the plastic piece central tube of the existing roll type membrane element, and realize that one membrane element has two-stage filtering function; the carbonaceous central tube is utilized, so that the subsequent reuse of the taste filter element can be avoided, and the membrane element integrates two-stage filtering functions of a fine filtering filter element and a rear taste filter element; the carbonaceous central tube does not have macroscopic macropore, and its surface is covered with structural micropore, compares in the visual macroporous central tube of traditional working of plastics, and roll-type diaphragm produced water is collected more easily.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (16)
1. A spiral wound membrane module, characterized in that: the method comprises the following steps:
a base pipe (102), the base pipe (102) being a cylindrical structure comprising an inner wall (102d) and an outer wall (102e), the radially inner side of the base pipe (102) having a cavity (102f) and the base pipe (102) being made of a filter material capable of allowing passage of a fluid, to allow passage of a fluid from the outer wall (102e) to the inner wall (102d) into the cavity (102f), or to allow passage of a fluid from the cavity via the inner wall (102d) to the outer wall (102 e); and a post-filter element (106) is also arranged in the cavity (102 f).
2. The membrane module of claim 1, wherein:
the filter material that can allow the fluid to pass through includes: at least one of a carbon material, a polypropylene pp material and a ceramic material; and/or the post-filter element (106) is an ultrafiltration filter element.
3. The membrane module of claim 2, wherein:
the central tube (102) is of a cylindrical carbon rod structure made of the carbon material; or the central pipe (102) is of a cylindrical PP structure made of the polypropylene PP material; or the central tube (102) is a cylindrical ceramic tube structure made of the ceramic material; and/or the post-filter element (106) is provided with a vent hole (106 a).
4. The membrane module of claim 2, wherein:
a cylindrical support sleeve (202b) is further arranged on the inner side of the inner wall (102d) of the central pipe (102) so that the cavity (102f) is located on the inner side of the support sleeve (202b), and at least one water through hole (202a) is further formed in the support sleeve (202 b).
5. The rolled membrane module according to any one of claims 1-4, characterized in that:
the water filter further comprises a roll-up membrane (103) wound around the periphery of the central pipe (102), wherein the roll-up membrane (103) is made of a material which can allow fluid to permeate through so as to allow water to pass through and filter the water.
6. The rolled membrane module according to claim 5, characterized in that:
further comprising a first end cap (101) arranged at an axial end of the central tube (102), said first end cap being capable of sealing said axial end of the central tube (102); and/or the presence of a gas in the gas,
the water-saving pipe is characterized by further comprising a second end cover (104) arranged at the other axial end of the central pipe (102), and a water outlet joint (105) is further connected and arranged on the radial inner side of the second end cover (104) to allow water in the central pipe (102) to flow out of the water outlet joint (105).
7. The rolled membrane module according to claim 6, characterized in that:
the first end cover (101) comprises a first extension arm (101d) located on the radial outer side and extending along the axial direction and a second extension arm (101e) located on the radial inner side and extending along the axial direction, and a space capable of clamping the inner wall and the outer wall of the central pipe (102) is formed between the first extension arm (101d) and the second extension arm (101 e).
8. The membrane module of claim 7, wherein:
the second extension arm (101e) is attached to and clamped on the inner wall of one axial end of the central pipe (102); the outer wall of the central tube (102) is further formed with a first step (102a) at a position of one end in the axial direction, and the first extension arm (101d) is engaged with the first step (102a) so that the outer peripheral surface of the first extension arm (101d) is flush with the outer peripheral surface of the central tube (102).
9. The membrane module of claim 7 or 8, wherein:
a film rolling clamping groove (101a) for rolling the film is formed in the center position of the first end cover (101) towards the axial direction of the central pipe (102); and/or a first fixing rib (101b) is arranged between the first extension arm (101d) and the second extension arm (101e) of the first end cover (101) in an axially extending manner, a fixing groove (102c) is also arranged at one axial end of the central tube (102) in an axially recessed manner, and a clamping limit can be formed between the first fixing rib (101b) and the fixing groove (102 c); and/or at least one first limiting rib (101c) is convexly arranged in the direction of the first end cover (101) opposite to the extending direction of the first extending arm (101d) and the second extending arm (101 e).
10. The rolled membrane module according to any one of claims 6-9, characterized in that:
the second end cover (104) comprises a third extension arm (104c) located on the radial outer side and extending along the axial direction and a fourth extension arm (104d) located on the radial inner side and extending along the axial direction, and a space capable of clamping the inner wall and the outer wall of the other end of the central tube (102) in the axial direction is formed between the third extension arm (104c) and the fourth extension arm (104 d).
11. The membrane module of claim 10, wherein:
the fourth extension arm (104d) is attached and clamped on the inner wall of the other end of the central pipe in the axial direction; and/or a second step (102b) is further formed on the outer wall of the central tube (102) at the position of the other end in the axial direction, and the third extension arm (104c) is clamped at the outer peripheral wall of the second step (102b) so that the outer peripheral surface of the third extension arm (104c) is flush with the outer peripheral surface of the central tube (102).
12. The membrane module of claim 10 or 11, wherein:
a second fixing rib (104b) is further axially arranged between the third extension arm (104c) and the fourth extension arm (104d) of the second end cover (104) in an extending manner, a fixing groove (102c) is further axially and concavely arranged at the other axial end of the central tube (102), and the second fixing rib (104b) and the fixing groove (102c) can form clamping limiting; and/or the inner side of the fourth extension arm (104d) of the second end cover (104) is also provided with a second limiting rib (104a) in a radially protruding manner and in an axially extending manner, the joint position of the second limiting rib (104a) and the fourth extension arm (104d) is formed into a first step structure, and the first step structure can limit and/or position the water outlet connector (105); and the free end of the second limit rib (104a) is formed into a limit structure (104e), and a second step structure (106b) which can be matched and clamped with the limit structure (104e) is formed on the outer peripheral wall of the rear filter element (106).
13. The rolled membrane module according to any one of claims 6-12, characterised in that:
the first end cover (101) is in sealing connection with the joint part between the central pipes (102); and/or the interface between the second end cover (104) and the central pipe (102) is in sealing connection; and/or the roll film (103) is wound at one axial end of the central pipe (102) and arranged at the periphery of the first end cover (101); and/or the roll film (103) is wound and arranged at the outer periphery of the second end cover (104) at the other axial end of the central pipe (102).
14. The rolled membrane module according to claim 13, characterized in that:
the roll type membrane (103) comprises a roll type membrane sheet (201), a glue line (202), a water production separation net (203) and a water inlet separation net, wherein the roll type membrane sheet (201) comprises a separation layer and a non-separation layer, the roll type membrane sheet (201) is folded at the separation layer in half, the water inlet separation net is placed in the folded position of the roll type membrane sheet, and one side of the non-separation layer is overlapped with the water production separation net (203).
15. The membrane module of claim 14, wherein:
the glue line (202) is arranged at the inner peripheral side of the roll film (103) and at a position opposite to the first end cap (101) and/or the second end cap (104); or the glue line is arranged close to the edge position of the rolled membrane (201) and the water production separation net (203) but not coincident with the edge, keeping a distance with the edge line, and meanwhile, the glue line (202) is arranged on the first end cover (101) and the second end cover (104).
16. A water purification system, its characterized in that: comprising a rolled membrane module according to any one of claims 5-15.
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| CN202020186724.0U Active CN211886280U (en) | 2019-08-02 | 2020-02-19 | Compound filter element group spare and water purification system |
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| CN202010103163.8A Withdrawn CN111229055A (en) | 2019-08-02 | 2020-02-19 | A composite filter element assembly and water purification system |
| CN202010103362.9A Active CN111185098B (en) | 2019-08-02 | 2020-02-19 | A water purifier filter core central tube, a rolled membrane assembly and a composite filter core assembly |
| CN202020187695.XU Active CN211886283U (en) | 2019-08-02 | 2020-02-19 | Central tube for roll type membrane, roll type membrane component and water purification system |
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| CN202020191911.8U Active CN211886284U (en) | 2019-08-02 | 2020-02-19 | Purifier filter core center tube, spiral wound membrane module and compound filter core subassembly |
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| CN202020186747.1U Active CN212091724U (en) | 2019-08-02 | 2020-02-19 | Water purification unit with filter element group spare |
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| CN202010103184.XA Pending CN111185096A (en) | 2019-08-02 | 2020-02-19 | Compound filter element group spare and water purification system |
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| CN202020186721.7U Active CN211886277U (en) | 2019-08-02 | 2020-02-19 | Compound filter element group spare and water purification system |
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| CN202010103189.2A Pending CN111185097A (en) | 2019-08-02 | 2020-02-19 | Roll up formula membrane module, compound filter element group spare and water purification system |
| CN202020187693.0U Active CN212142159U (en) | 2019-08-02 | 2020-02-19 | Compound filter element group spare and water purification system |
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| CN202010105864.5A Pending CN111185102A (en) | 2019-08-02 | 2020-02-19 | Spiral wound membrane module and water purification system |
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| CN211886279U (en) | 2020-11-10 |
| CN111185097A (en) | 2020-05-22 |
| CN111185102A (en) | 2020-05-22 |
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| CN212091724U (en) | 2020-12-08 |
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| CN111229055A (en) | 2020-06-05 |
| CN211886278U (en) | 2020-11-10 |
| CN111185098A (en) | 2020-05-22 |
| CN112295417B (en) | 2023-04-25 |
| CN211886282U (en) | 2020-11-10 |
| WO2021164335A1 (en) | 2021-08-26 |
| CN212142159U (en) | 2020-12-15 |
| CN111185098B (en) | 2025-02-14 |
| CN111185099A (en) | 2020-05-22 |
| CN211886283U (en) | 2020-11-10 |
| CN111185100A (en) | 2020-05-22 |
| CN211886277U (en) | 2020-11-10 |
| CN211886285U (en) | 2020-11-10 |
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