CN214715716U - Reverse osmosis membrane filter core and water purification unit - Google Patents
Reverse osmosis membrane filter core and water purification unit Download PDFInfo
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- CN214715716U CN214715716U CN202022055540.3U CN202022055540U CN214715716U CN 214715716 U CN214715716 U CN 214715716U CN 202022055540 U CN202022055540 U CN 202022055540U CN 214715716 U CN214715716 U CN 214715716U
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- osmosis membrane
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 259
- 239000012528 membrane Substances 0.000 title claims abstract description 151
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 108
- 238000000746 purification Methods 0.000 title claims abstract description 17
- 230000008901 benefit Effects 0.000 abstract description 9
- 238000003860 storage Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000012466 permeate Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000002775 capsule Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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Abstract
The utility model discloses a reverse osmosis membrane filter core and water purification unit, the reverse osmosis membrane filter core includes the membrane shell, the center tube, reverse osmosis membrane, elastic component and adaptor, set up elastic component in the center tube, during normal system water, the membrane pure water export of seting up on the pipe wall of pure water center tube is collected, and flow through the terminal pure water export of center tube, when closing tap, the booster pump continues to operate until reaching and sets for water pressure, elastic component is compressed and produces elasticity, the pure water that continues to produce is stored in the center tube, when shutting down the back, elasticity back drive elastic component removes, go into reverse pressure of pure water in the center tube in the reverse osmosis membrane, with the raw water in the membrane, dense water passes through dense mouth and discharges, the TDS value of first cup of water when having reduced system water once more, and has simple structure, small volume, with low costs and the advantage that the amount of water is few.
Description
Technical Field
The utility model belongs to the technical field of the water purification, specifically speaking relates to a reverse osmosis membrane filter core and water purification unit.
Background
The environmental pollution and the water pollution are increasingly serious, the drinking water health of people is seriously threatened, and the RO (reverse osmosis) machine water purification technology is a better mode for preparing purified water because various harmful impurities, heavy metals, viruses, bacteria and the like in water can be removed, the efficiency is high, and the removal is thorough.
However, due to the nature of the RO membrane, the water before the membrane and the water after the membrane tend to approach each other after standing for a while by ion diffusion TSD, resulting in a higher TDS of the first cup of pure water. In the prior art, in order to reduce the TDS value of the first cup of pure water, the following methods are generally adopted: 1. storing raw water or prepared pure water in a storage tank, and cleaning the RO filter element by using the water in the storage tank; 2. cleaning the RO filter element by using the water filtered by the auxiliary filter element; 3. before using purifier system water, let the filter core start a period earlier, discharge the water that TDS value is high earlier.
In the above various modes, the cost of the water purifying equipment is increased, the product volume is too large, or the waiting time of a user is increased, and the popularization of the product is not facilitated.
Disclosure of Invention
An object of the utility model is to provide a reverse osmosis membrane filter core and water purification unit sets up elastic component in reverse osmosis membrane filter core's center tube, makes tap store at the pure water back flush reverse osmosis membrane of center tube after closing through pressure drive, replaces raw water and dense water to simple structure, low cost and the little reverse osmosis filter core of water consumption have solved the high problem of first cup pure water TDS value.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a reverse osmosis membrane cartridge is provided comprising: a membrane shell; the central tube is arranged in the membrane shell, one end of the central tube is blocked, and the other end of the central tube is opened to form a pure water outlet; the pipe wall is provided with a membrane pure water outlet; the reverse osmosis membrane is arranged around the central tube, two end faces of the reverse osmosis membrane respectively form a raw water inlet end face and a concentrated water outlet end face, and a raw water cavity is formed between the circumferential surface of the reverse osmosis membrane and the membrane shell; further comprising: the elastic component is arranged in the central tube, and one end of the elastic component is fixed at the plugging end of the central tube; the membrane pure water outlet is arranged on the pipe wall of the non-elastic component accommodating part; the adapter comprises a first sleeve and a circular ring part which are coaxial, the circular ring part is abutted against the concentrated water outlet end face of the reverse osmosis membrane, the first sleeve is sleeved on the periphery of the central tube, and a concentrated water outlet channel is formed between the first sleeve and the outer wall of the central tube.
Further, the length of the elastic component is more than or equal to half of the length of the central tube.
Further, the elastic member includes: one end of the spring is fixed at the plugging end of the central tube; a piston connected to a distal end of the spring.
Further, the elastic component is a rubber bag which is pre-filled with gas.
Further, the adaptor further comprises: and the second sleeve is sleeved on the circumferential surface of the reverse osmosis membrane and is perpendicular to the circular ring part.
Further, the reverse osmosis membrane filter element still includes: the membrane cover is provided with a raw water hole, a concentrated water hole and a pure water hole; the raw water hole is communicated with the raw water cavity; the concentrated water port is communicated with the concentrated water outlet channel; the pure water hole is communicated with the pure water outlet.
Furthermore, a first limiting structure is arranged on the pipe wall of the central pipe above the membrane pure water outlet and used for limiting the maximum stroke of the elastic component.
Furthermore, a second limiting structure extends from a position, opposite to the plugging end of the central tube, in the membrane shell, and the plugging end of the central tube is limited in the second limiting structure.
A water purification device is proposed, comprising a reverse osmosis membrane cartridge as described above.
Compared with the prior art, the utility model discloses an advantage is with positive effect: the utility model provides a reverse osmosis membrane filter core and water purification unit, set up elastic component in reverse osmosis membrane filter core's center tube, during normal system water, the membrane pure water export of seting up on the pipe wall of pure water center tube collects, and the pure water export flow through the center tube end, when closing tap, the booster pump continues the operation until reaching and sets for water pressure, elastic component is compressed and produces elasticity, make the pure water of continuing to make save in the center tube, the pure water memory space increases, after shutting down, elasticity back drive elastic component removes, with the pure water in the center tube through membrane pure water export back pressure in the reverse osmosis membrane, with the raw water in the membrane, dense water passes through dense mouth and discharges, during the ware that stops, even the raw water before the membrane permeates to the membrane after, it is also little to the TDS value influence of pure water, play the effect that reduces first water TDS value when making water once more.
Further, set for the length of elastic component for more than or equal to the half of central tube length, length is longer, and then the pure water of recoil reverse osmosis membrane is more, and is better to reverse osmosis membrane's washing effect, shuts down remaining pure water and is less, and this pure water that flows out when starting again, the most is the pure water of new preparation for during shutting down with the influence of the pure water that raw water took place to permeate to the TDS value can be ignored.
Further, compare modes such as increase storage jar, supplementary filter core among the prior art, the utility model provides a reverse osmosis filter core has simple structure, small and advantage with low costs, compares that current filter core starts the earlier discharged mode of water with TDS value height for a period and still has the advantage of taking the water volume to be little.
Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the invention, which is to be read in connection with the accompanying drawings.
Drawings
Fig. 1 is a water production state diagram of the reverse osmosis membrane filter element provided by the utility model;
FIG. 2 is a water cut-off state diagram of the reverse osmosis membrane filter element provided by the utility model;
FIG. 3 is a back-washing state diagram of the reverse osmosis membrane filter element provided by the utility model;
FIG. 4 is a schematic structural view of a transfer piece in a reverse osmosis membrane filter element according to the present invention;
FIG. 5 is a schematic view showing the structure of the raw water channel, the concentrated water outlet channel and the pure water outlet in the reverse osmosis membrane filter element of the present invention
FIG. 6 is a schematic structural view of a membrane cover in a reverse osmosis membrane filter element provided by the present invention;
FIG. 7 is another schematic structural view of a membrane cover in the reverse osmosis membrane filter element according to the present invention;
fig. 8 is an architecture diagram of the water purifying device provided by the utility model.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The utility model aims at providing a reverse osmosis membrane filter core sets up elastic component in reverse osmosis membrane filter core's center tube, through pressure drive make tap close the back storage at the pure water backwash reverse osmosis membrane of center tube, replace out raw water and dense water to simple structure, low cost and the little reverse osmosis filter core of water consumption solve the high problem of first cup pure water TDS value.
As shown in fig. 1 to 3, the reverse osmosis membrane filter element provided by the present invention comprises a membrane shell 1, a central tube 3, a reverse osmosis membrane 3, an elastic component 4 and an adaptor 5.
The central tube 2 is arranged in the membrane shell 1, one end of the central tube is blocked, the other end of the central tube is opened to form a pure water outlet 21, and a membrane pure water outlet 22 is arranged on the tube wall of the central tube.
The reverse osmosis membrane 3 is arranged around the central tube 2, two end faces of the reverse osmosis membrane respectively form a raw water inlet end face 31 and a concentrated water outlet end face 32, a raw water cavity 6 is formed between the circumferential surface of the reverse osmosis membrane and the membrane shell 1, and the cross section of the raw water cavity 6 is in a circular ring shape; the plugging end of the central tube 2 is higher than the raw water inlet end face 31 of the reverse osmosis membrane 3, a cavity 61 is formed between the raw water inlet end face 31 and the inside of the membrane shell 1, and the cavity 61 is communicated with the raw water cavity 6 to form a complete raw water passage; the open end of the central tube 2 extends out of the concentrated water outlet end face 32 of the reverse osmosis membrane 3.
A second limiting structure 11 extends from the position, which is opposite to the plugging end of the central tube 2, in the membrane shell 1, and the plugging end of the central tube 2 is limited in the second limiting structure 11, so that the central tube 2 is prevented from inclining and/or being misplaced.
The elastic component 4 is arranged in the central tube 2, and one end of the elastic component is fixed at the plugging end of the central tube 2; the membrane pure water outlet 22 opens in the wall of the containment portion of the non-elastic assembly 4 of the central tube 2.
As shown in fig. 4, the adaptor 5 is composed of a first sleeve 51 and a circular ring 52 which are coaxial, as shown in fig. 1, the circular ring 52 abuts against the concentrated water outlet end surface 32 of the reverse osmosis membrane 3, the first sleeve 51 is sleeved on the periphery of the central tube 2, a concentrated water outlet channel 8 is formed between the first sleeve and the outer wall of the central tube 2, and a raw water channel 7 is formed between the first sleeve and the inner wall of the membrane shell 1, as shown in fig. 5, the pure water outlet 21, the concentrated water outlet channel 8 and the raw water channel 7 are in a circular ring distribution structure with different radiuses in sleeving.
In some embodiments of the present invention, the adaptor 5 further comprises a second sleeve 53 having a vertical circular ring portion 52 sleeved on the circumferential surface of the reverse osmosis membrane 3; the second sleeve 53 defines the reverse osmosis membrane 3.
Based on the reverse osmosis membrane filter element, when water production starts, raw water flows to the cavity 61 through the raw water channel 7 and the raw water cavity 6, reaches the raw water inlet end face 31 of the reverse osmosis membrane 3, enters the reverse osmosis membrane 3 from the raw water inlet end face 31, the reverse osmosis membrane 3 filters the raw water, and formed pure water flows into the central tube 2 from the membrane pure water outlet 22 and flows out from the pure water outlet 21; the concentrated water filtered by the reverse osmosis membrane 3 flows into the concentrated water outlet channel 8 from the concentrated water outlet end face 32.
When the water tap of the water purifying device is closed, the booster pump of the water purifying device is controlled to continuously operate for a certain time or the booster pump is controlled to continuously operate for a certain time under the inertia effect, and during the time, the pure water prepared by the reverse osmosis membrane 3 is remained in the central pipe 2 because of being incapable of flowing out and squeezes the elastic component 4.
After the elastic component 4 is squeezed to meet a certain condition, for example, the water pressure reaches a set value or is squeezed to the maximum compression stroke, the booster pump of the water purification equipment is controlled to stop, after water production is stopped, pure water in the central pipe 2 is pushed by the reverse acting force of the elastic component 4 and reversely flows back to the reverse osmosis membrane 3 from the membrane pure water outlet 22, and concentrated water and raw water in the reverse osmosis membrane 3 are pressed out from the concentrated water outlet end face 32, so that reverse washing of the reverse osmosis membrane 3 is realized, and the reverse osmosis membrane 3 is soaked by the pure water.
The utility model discloses in some embodiments, be half of the length design of elastic component 4 for more than or equal to center tube length to be higher than reverse osmosis membrane 3's dense water outlet end face 32, membrane pure water outlet 22 then sets up on the center tube wall between elastic component 4 terminal and reverse osmosis membrane 3's dense water outlet end face 32, for the biggest stroke of injecing elastic component 4, be provided with first limit structure on the center tube wall above membrane pure water outlet 22, a terminal for injecing elastic component 4, be injecing its biggest stroke between center tube shutoff end to first limit structure.
In the present invention, the elastic component 4 may be a component composed of a spring 41 and a piston 42 as shown in fig. 1 to 3, wherein one end of the spring 41 is fixed to the plugging end of the central tube 2, and the other end is also the end-connected piston 42.
But not limited to, the embodiments of the present invention, and the components that can realize sealing and form reverse elasticity or pressure together can be realized; the overall length of the elastic component 4 is more than or equal to half of the length of the central tube 2, so as to ensure that the elastic force generated when the elastic component is compressed is enough to back press the pure water to the reverse osmosis membrane 3.
As shown in fig. 6 and 7, the reverse osmosis membrane cartridge of the present invention further comprises a membrane cover 9 for sealing the open end of the membrane housing 1; the membrane cover is provided with a raw water hole 91, a concentrated water hole 92 and a pure water hole 93, and the raw water hole 91 and 6 raw water cavity communication, the concentrated water port 92 and the concentrated water outlet channel 8 communication, and the pure water hole 93 and the pure water outlet 21 communication can be realized based on a waterway switching structural member.
Above-mentioned, the utility model provides a reverse osmosis membrane filter core compares modes such as increase storage jar, supplementary filter core among the prior art, has simple structure, small and advantage with low costs, compares that current filter core starts the earlier exhaust mode of water with TDS value height for a period and still has the advantage that the volume of wasting water is little.
The operation of the reverse osmosis membrane filter cartridge according to the present invention will be described in detail with reference to fig. 1 to 3 and 8.
The utility model provides a reverse osmosis membrane filter core is applied to in the water purification unit as shown in figure 8, and this water purification unit includes leading filter core 91, water intaking valve 92, booster pump 93, the reverse osmosis membrane filter core that the aforesaid provided, waste water valve 94, check valve 95, pressure switch 96, rearmounted filter core 97 and tap 98.
As shown in fig. 1, when water is normally produced, a water tap 98 is turned on, a controller of the water purification apparatus detects a pressure change of a pressure switch 96, a water inlet valve 92 is turned on, raw water enters a pre-filter 91 from a water inlet pipe to perform primary filtration, and filtered pure water is pressed into a reverse osmosis membrane filter element by the action of a booster pump 93.
Purified water filtered by the preposed filter element 91, namely raw water of the reverse osmosis membrane filter element, which is hereinafter referred to as raw water for short, moves to the plugging end of the central tube 2 along the raw water channel 7 and the raw water cavity 6, enters the cavity 61, further enters the reverse osmosis membrane 3 from the raw water inlet end face 31 of the reverse osmosis membrane 3, after being filtered by the reverse osmosis membrane 3, pure water is collected from a membrane pure water outlet 22 formed in the tube wall of the central tube 2 and flows out from a pure water outlet 21 at the tail end of the central tube 2, and a user obtains prepared pure water; the concentrated water enters the concentrated water outlet channel 8 from the concentrated water outlet end face 32 of the reverse osmosis membrane 3, the waste water valve 94 is opened, and the concentrated water is discharged from the waste water pipeline; during this time, the elastic member 4 is in a natural state with the end in position a.
When the water tap 98 of the water purifying apparatus is closed, the pure water outlet passage where the pure water outlet 22 is located is closed, and the pressurizing pump 93 is controlled to continue the operation.
While the booster pump 93 is continuously operated, the raw water continues to enter the reverse osmosis membrane filter element, the reverse osmosis membrane 3 continues to filter the pure water, the pure water which is continuously generated is stored in the central tube 2 because the pure water cannot flow out of the pure water outlet passage, and the elastic member 4 is pressed, so that the elastic member 4 is compressed under the action of the water pressure, and the pure water is stored in the space which is generated in the central tube 2 because the elastic member 4 is compressed, as shown in fig. 2.
When the water pressure reaches the set water pressure, the elastic member 4 is compressed up to position B, the pressurizing pump 93 is turned off, and pure water is stored in the center pipe 2, as shown in fig. 3.
After the water purifying equipment is shut down, the elastic component 4 is driven by the elastic force to reversely press the pure water in the central pipe 2 back to the reverse osmosis membrane 3 through the membrane pure water outlet 22, the raw water and the concentrated water in the reverse osmosis membrane 3 are discharged from the concentrated water outlet end face 31 until the elastic component 4 does not have the elastic force to recover the natural state, the pressure in the reverse osmosis membrane 3 is reduced to zero, and the elastic component 4 returns to the position A.
It is thus clear, based on the utility model provides a reverse osmosis membrane filter core, after water purification equipment shut down, through the pure water backward flow of 2 internal storages in center tube, with raw water and dense water discharge in the reverse osmosis membrane, play the effect that has reduced the TDS value of first cup of water when making water once more, still compare modes such as increase storage jar, supplementary filter core among the prior art, have simple structure, small and advantage with low costs, it has the advantage that the volume of taking water is little to compare current filter core start-up a period of time with the earlier exhaust mode of water that TDS value is high.
Of course, the present invention is not limited to the embodiment provided by the present invention, in practical application, the booster pump 93 can continuously operate for a period of time based on inertia after the water tap 98 is closed, so that it is not necessary to adopt a control mode of controlling the booster pump 93 to continuously operate and detect the pressure signal of the pressure switch 96 after the water tap 98 is closed, and then controlling the booster pump 93 to stop operating after the water pressure reaches the set water pressure, but a simple mode of preparing pure water based on the inertia operation of the booster pump and storing the pure water in the central tube 2 is implemented.
Specifically, when the faucet of the water purification device is closed, the booster pump 93 is also closed according to the existing control means, after the booster pump 93 is closed, the booster pump continuously operates based on inertia, during operation, pure water prepared by the reverse osmosis membrane filter element is retained in the central tube 2 and extrudes the elastic component 4, after the inertial operation of the booster pump 93 is stopped, the stored pure water is reversely extruded into the reverse osmosis membrane 3 under the elastic action of the elastic component 4, the reverse osmosis membrane 3 is reversely flushed, and finally the pure water is soaked in the pure water.
The mode of implementing the reverse flushing of the reverse osmosis membrane based on the inertia running of the booster pump can estimate the water making amount according to the inertia running time of the booster pump, and further estimate the occupied space of the central pipe for storing the pure water prepared during the inertia running, thereby determining the length and/or the compression performance of the elastic component 4, so that the reverse flushing condition can be met after the inertia running of the booster pump is stopped.
The reverse osmosis membrane filter element, the water purifying equipment and the control method thereof provided by the utility model are characterized in that the elastic component is arranged in the central tube of the reverse osmosis membrane filter element, when water is normally produced, pure water is collected from the membrane pure water outlet arranged on the tube wall of the central tube, and flows out through a pure water outlet at the tail end of the central pipe, when the faucet is closed, the booster pump continues to operate until the set water pressure is reached, the elastic component is compressed and generates elastic force, so that the pure water which is continuously manufactured is stored in the central pipe, the storage capacity of the pure water is increased, when the machine is stopped, the elastic force reversely drives the elastic component to move, pure water in the central pipe is reversely pressed into the reverse osmosis membrane through the membrane pure water outlet, raw water and concentrated water in the membrane are discharged through the concentrated water port, during the machine is stopped, even the former raw water of membrane permeates to the membrane after, also not very much to the TDS value influence of pure water, reduces the effect of first cup of water TDS value when playing system water once more.
It should be noted that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the present invention.
Claims (9)
1. A reverse osmosis membrane cartridge comprising:
a membrane shell;
the central tube is arranged in the membrane shell, one end of the central tube is blocked, and the other end of the central tube is opened to form a pure water outlet; the pipe wall is provided with a membrane pure water outlet;
the reverse osmosis membrane is arranged around the central tube, two end faces of the reverse osmosis membrane respectively form a raw water inlet end face and a concentrated water outlet end face, and a raw water cavity is formed between the circumferential surface of the reverse osmosis membrane and the membrane shell;
it is characterized by also comprising:
the elastic component is arranged in the central tube, and one end of the elastic component is fixed at the plugging end of the central tube; the membrane pure water outlet is arranged on the pipe wall of the containing part of the central pipe inelastic component;
the adapter comprises a first sleeve and a circular ring part which are coaxial, the circular ring part is abutted against the concentrated water outlet end face of the reverse osmosis membrane, the first sleeve is sleeved on the periphery of the central tube, and a concentrated water outlet channel is formed between the first sleeve and the outer wall of the central tube.
2. The reverse osmosis membrane cartridge of claim 1, wherein the resilient member has a length equal to or greater than half the length of the center tube.
3. The reverse osmosis membrane cartridge of claim 1, wherein the resilient member comprises:
one end of the spring is fixed at the plugging end of the central tube;
a piston connected to a distal end of the spring.
4. The reverse osmosis membrane cartridge of claim 1, wherein the resilient member is a gas-pre-filled rubber bladder.
5. The reverse osmosis membrane cartridge of claim 1, wherein the adapter further comprises:
and the second sleeve is sleeved on the circumferential surface of the reverse osmosis membrane and is perpendicular to the circular ring part.
6. The reverse osmosis membrane cartridge of claim 1, further comprising:
the membrane cover is provided with a raw water hole, a concentrated water hole and a pure water hole;
the raw water hole is communicated with the raw water cavity; the concentrated water port is communicated with the concentrated water outlet channel; the pure water hole is communicated with the pure water outlet.
7. The reverse osmosis membrane filter element of claim 1, wherein a first limiting structure is arranged on the wall of the central tube above the membrane pure water outlet and used for limiting the maximum stroke of the elastic component.
8. The reverse osmosis membrane cartridge of claim 1, wherein a second limiting structure extends from a location within the membrane housing directly opposite the plugged end of the center tube, the plugged end of the center tube being defined within the second limiting structure.
9. Water purification apparatus comprising a reverse osmosis membrane cartridge according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022055540.3U CN214715716U (en) | 2020-09-18 | 2020-09-18 | Reverse osmosis membrane filter core and water purification unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022055540.3U CN214715716U (en) | 2020-09-18 | 2020-09-18 | Reverse osmosis membrane filter core and water purification unit |
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| Publication Number | Publication Date |
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| CN214715716U true CN214715716U (en) | 2021-11-16 |
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| CN202022055540.3U Active CN214715716U (en) | 2020-09-18 | 2020-09-18 | Reverse osmosis membrane filter core and water purification unit |
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