CN221420914U - Multistage filtration system and water purification equipment - Google Patents
Multistage filtration system and water purification equipment Download PDFInfo
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- CN221420914U CN221420914U CN202323175304.5U CN202323175304U CN221420914U CN 221420914 U CN221420914 U CN 221420914U CN 202323175304 U CN202323175304 U CN 202323175304U CN 221420914 U CN221420914 U CN 221420914U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 238000001914 filtration Methods 0.000 title claims abstract description 125
- 238000000746 purification Methods 0.000 title claims description 12
- 239000012528 membrane Substances 0.000 claims abstract description 71
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 57
- 238000011010 flushing procedure Methods 0.000 claims abstract description 22
- 239000010865 sewage Substances 0.000 claims abstract description 16
- 238000003860 storage Methods 0.000 claims abstract description 11
- 239000008213 purified water Substances 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 60
- 229920000742 Cotton Polymers 0.000 claims description 33
- 229910052799 carbon Inorganic materials 0.000 claims description 16
- 238000000108 ultra-filtration Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 abstract description 7
- 239000012535 impurity Substances 0.000 description 21
- 230000002441 reversible effect Effects 0.000 description 13
- 229910001385 heavy metal Inorganic materials 0.000 description 11
- 239000003344 environmental pollutant Substances 0.000 description 8
- 231100000719 pollutant Toxicity 0.000 description 8
- 238000005406 washing Methods 0.000 description 7
- 239000004744 fabric Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 241000195493 Cryptophyta Species 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The utility model discloses a multi-stage filtration system and water purifying equipment, which comprises a primary filtration device, a secondary filtration device, a tertiary filtration device and a quaternary filtration device; the internal working cavity of the three-stage filtering device is divided into a water purifying area and a concentrated water area which are mutually independent by a reverse osmosis membrane filter element; the bottom of the water purifying area is provided with a water purifying outlet, one end of the water purifying outlet is connected with the water inlet of the four-stage filtering device through a pipeline and one end of a tee joint, one end of the water purifying outlet is connected with the back flushing device and then is connected with the concentrated water inlet at the top of the concentrated water area, and the bottom of the concentrated water area is provided with a sewage outlet; the back flushing device comprises a purified water storage tank, a first increasing pump and a first one-way valve which are sequentially connected to the pipeline. The utility model aims at the filter element made of different materials to be reasonably replaced according to the different performances and the cost or to be washed by adding the backflushing device so as to achieve the aim of repeated use, and simultaneously, the service life of the filter element is maximized as much as possible.
Description
Technical Field
The utility model relates to the technical field of filtering and water purifying equipment, in particular to a multi-stage filtering system and water purifying equipment.
Background
In the current water treatment state, no matter domestic water or industrial water, a series of purification treatments are needed to be carried out on the quoted raw water so as to lead the raw water to reach a certain safety standard for use. Along with the progress of water treatment technology, reverse osmosis water purification equipment is becoming more popular, and the problems caused by the progress of the reverse osmosis water purification equipment are also becoming more prominent. For example, as the water amount filtered by the water purifying equipment increases, a large amount of pollutants can be quickly attached to the filter element to cause the filter element to be blocked, so that the water production speed is reduced or the water quality is influenced, and the service life of the filter element is shortened. The common solution is to flush or replace the filter element, and the filter element is preferably selected for flushing from the aspects of resource saving and full utilization. However, aiming at filter elements made of different materials, some filter elements are suitable for flushing and repeated use, and some filter elements are recommended to be replaced, so that the water purifying equipment needs to be reasonably optimized, and the service life of the filter elements is maximized as much as possible.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art, and provides a multi-stage filtration system and water purification equipment, which are characterized in that the filtration system is reasonably optimized, filter elements made of different materials are arranged in a grading manner, and a back flushing device is additionally arranged on the filter elements to be flushed, so that the service life of each stage of filter elements is maximized as much as possible.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The multistage filtering system comprises a first-stage filtering device, a second-stage filtering device, a third-stage filtering device and a fourth-stage filtering device, wherein the first-stage filtering device, the second-stage filtering device, the third-stage filtering device and the fourth-stage filtering device are sequentially connected in series through pipelines;
The primary filter device is internally provided with a PP cotton filter element, the secondary filter device is internally provided with a coarse active carbon filter element, the tertiary filter device is internally provided with a reverse osmosis membrane filter element, and the quaternary filter device is internally provided with a fine active carbon filter element;
The internal working cavity of the three-stage filtering device is divided into a water purifying area and a concentrated water area which are mutually independent by a reverse osmosis membrane filter element;
The bottom of the water purifying area is provided with a water purifying outlet, one end of the water purifying outlet is connected with the water inlet of the four-stage filtering device through a pipeline and one end of a tee joint, one end of the water purifying outlet is connected with the back flushing device and then is connected with the concentrated water inlet at the top of the concentrated water area, and the bottom of the concentrated water area is provided with a sewage outlet;
The back flushing device comprises a purified water storage tank, a first increasing pump and a first one-way valve which are sequentially connected to the pipeline, wherein the first one-way valve can ensure that water in the purified water storage tank flows unidirectionally to a concentrated water area without backflow.
Preferably, the reverse osmosis membrane filter element is an ultrafiltration membrane filter element or an RO membrane filter element. When the ultrafiltration membrane filter element is selected, the filtering precision is 0.01 mu m, so that some macromolecular pollutants such as colloid, bacteria, algae and the like can be filtered, but metal ions cannot be filtered; when the RO reverse osmosis membrane filter element is selected, the pores of 0.1nm can block basically all impurities and heavy metals, so that pure H 2 O is obtained.
Preferably, the pipelines of the secondary filtering device and the tertiary filtering device are provided with a second increasing pump and a second one-way valve. In consideration of the fact that the working principle of the RO reverse osmosis membrane is opposite to that of common water, the water entering the RO reverse osmosis membrane needs to be pressurized, so that the water can flow from high concentration to low concentration to form reverse osmosis, the second one-way valve can ensure that water filtered by the two-stage filtering device flows unidirectionally to the concentrated water area without backflow, and meanwhile, the water pumped by the purified water storage tank in the back flushing device can only flow to the concentrated water area without flowing to the two-stage filtering device.
Preferably, the bottoms of the first-stage filtering device, the second-stage filtering device and the fourth-stage filtering device are respectively provided with a sewage outlet which is used for discharging accumulated water accumulated in the weekdays or cleaning residual water left by the filtering devices when the filter element is replaced.
Preferably, the sewage discharge ports are each provided with a sewage discharge valve for controlling closing and opening of the sewage discharge ports.
A water purifying device comprises the multi-stage filtering system.
The beneficial effects of the utility model are as follows:
The multi-stage filtration system and the water purification equipment provided by the utility model are characterized in that raw water coming from a raw water supply system is filtered by a first-stage filtration device, a second-stage filtration device, a third-stage filtration device and a fourth-stage filtration device in sequence and then is used as industrial or domestic water. And the primary filter device is internally provided with a PP cotton filter element, the secondary filter device is internally provided with a coarse active carbon filter element, the tertiary filter device is internally provided with a reverse osmosis membrane filter element, and the quaternary filter device is internally provided with a fine active carbon filter element. And then a back flushing device is arranged on the three-stage filtering device. Specifically, the PP cotton filter element in the primary filter device mainly has the effects that large particle impurities in raw water are filtered firstly, PP cotton is wound like a large piece of cloth with holes in many layers around a porous water pipe, the inner layer fiber which is closer to the water pipe is thinner and tighter, the fiber which is closer to the outer layer is thicker and looser, each layer of cloth can intercept impurities in the water, the filtering precision is 1-5 mu m, the water flows from the outside to the inside of the PP cotton, the filtering precision is higher when the water is filtered layer by layer, the smaller the pore diameter is closer to the inner layer of the filter element, the impurities can be blocked on the cloth of each layer to block the holes, so that the color of the PP cotton is intuitively changed, So the filter element of the PP cotton needs to be replaced frequently, and the price is low when the PP cotton is used as a primary filter element; The coarse active carbon filter element in the secondary filter device is used for adsorbing impurities, peculiar smell, residual chlorine and other harmful substances in water; the fine activated carbon filter element in the four-stage filtering device is used for improving the taste and removing heavy metal lead and the like; the activated carbon filter element has a service life which is slightly longer than that of pp cotton, the activated carbon filter element is replaced for a long time, and the activated carbon filter element is relatively low in price; and the reverse osmosis membrane filter element in the three-stage filtering device is used as the most important filtering component of the whole filtering system: 1) If the ultrafiltration membrane filter core is selected, the filtering precision is 0.01 mu m, so that some macromolecular pollutants such as colloid, bacteria, algae and the like can be filtered, but metal ions cannot be filtered; 2) If the RO reverse osmosis membrane filter element is selected, the pores of 0.1nm can block basically all impurities and heavy metals, so that pure H 2 O is obtained; the ultrafiltration membrane filter element and the RO reverse osmosis membrane filter element are quite high in price compared with the PP cotton filter element and the active carbon filter element, if the ultrafiltration membrane filter element and the RO reverse osmosis membrane filter element are simply considered to be replaced, the cost is not reduced, and the ultrafiltration membrane filter element and the RO reverse osmosis membrane filter element are preferably recycled through regular flushing, so that the effect of regularly cleaning the reverse osmosis membrane filter element can be achieved through the arrangement of the back flushing device V. Namely, the PP cotton filter element and the activated carbon filter element are more suitable for regular replacement because of low reversible filtering characteristics and low cost, and the reverse osmosis membrane filter element is used as the most important filtering component of the whole filtering system, and the PP cotton filter element and the activated carbon filter element are more suitable for regular cleaning and maintenance to achieve recycling because of high reversible filtering characteristics and high cost, so that a back flushing device is additionally arranged through a branch pipeline. The specific description is as follows: the low reversible filtration properties refer to the PP cotton filter cartridge and the activated carbon filter cartridge which, after use, are penetrated by magazines therein and are not most effectively removed by washing; the high reversible filtering characteristic means that the magazines on the reverse osmosis membrane filter core can be washed out by washing a great part of magazines after the reverse osmosis membrane filter core is filtered, so that the filtering performance of the reverse osmosis membrane filter core is further improved, the reverse osmosis membrane filter core does not influence the reuse to a certain extent, and the magazines are not recycled indefinitely in the service life range of the reverse osmosis membrane filter core. So whole filtration system is according to filter core reasonable optimization overall arrangement, the hierarchical arrangement of different materials, filters the raw water step by step, and large granule impurity filters through the cotton filter core of PP earlier, and harmful substance such as impurity, peculiar smell, residual chlorine adsorb through coarse active carbon filter core, and less impurity and macromolecular pollutant or with heavy metal filter through reverse osmosis membrane filter core, and fine active carbon filter core is used for promoting taste and getting rid of heavy metal plumbous etc. at last. Therefore, the filter elements made of different materials are reasonably replaced according to different performances and costs or are washed by adding a backflushing device to achieve the aim of repeated use, so that the use cost of the filter elements at all levels is effectively controlled, and the service life of the filter elements is maximized as far as possible.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural frame diagram of the multi-stage filtration system of the present utility model.
Wherein:
Pp cotton filter element; 2. a coarse activated carbon filter element; 3. a reverse osmosis membrane filter element; 4. a fine activated carbon filter element; 5. a purified water outlet; 6. a concentrated water inlet; 7. a sewage outlet; 8. a water purifying storage tank; 9. a first booster pump; 10. a first one-way valve; 11. a second addition pump; 12. a second one-way valve; 13. a sewage discharge valve;
I. a primary filter device; II, a secondary filtering device; III, a three-stage filtering device; IV, a four-stage filtering device; v, back flushing device;
A. A water purification area; B. and a concentrated water area.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully by reference to the accompanying drawings and examples, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, the multi-stage filtering system provided by the embodiment of the utility model comprises a first-stage filtering device I, a second-stage filtering device II, a third-stage filtering device III and a fourth-stage filtering device IV, wherein the first-stage filtering device I, the second-stage filtering device II, the third-stage filtering device III and the fourth-stage filtering device IV are sequentially connected in series through pipelines;
The primary filter device I is internally provided with a PP cotton filter element 1, the secondary filter device II is internally provided with a coarse active carbon filter element 2, the tertiary filter device III is internally provided with a reverse osmosis membrane filter element 3, and the quaternary filter device IV is internally provided with a fine active carbon filter element 4;
The internal working cavity of the three-stage filtering device III is divided into a water purifying area A and a concentrated water area B which are mutually independent by a reverse osmosis membrane filter element 3;
the bottom of the water purifying area A is provided with a water purifying outlet 5, the water purifying outlet 5 is connected with the water inlet of the four-stage filtering device IV through a pipeline and one end of a tee joint, one end of the water purifying outlet is connected with the back flushing device V and then is connected with the concentrated water inlet 6 at the top of the concentrated water area B, and the bottom of the concentrated water area B is provided with a sewage outlet 7;
The back flushing device V comprises a purified water storage tank 8, a first booster pump 9 and a first one-way valve 10 which are sequentially connected to a pipeline, wherein the first one-way valve 10 can ensure that water in the purified water storage tank 8 flows unidirectionally to the concentrated water area B without backflow.
The multistage filtering system provided by the utility model has the working principle that: raw water from the raw water supply system is filtered by the first-stage filter device I, the second-stage filter device II, the third-stage filter device III and the fourth-stage filter device IV in sequence and then used as industrial or domestic water. And a PP cotton filter element 1 is arranged in the primary filter device I, a coarse activated carbon filter element 2 is arranged in the secondary filter device II, a reverse osmosis membrane filter element 3 is arranged in the tertiary filter device III, and a fine activated carbon filter element 4 is arranged in the quaternary filter device IV. The raw water is filtered by a PP cotton filter element 1 in a first-stage filter device I to remove large-particle impurities, then the raw water is adsorbed by a coarse active carbon filter element 2 in a second-stage filter device II to remove impurities, peculiar smell, residual chlorine and other harmful substances, and then the raw water is filtered by a reverse osmosis membrane filter element 3 in a third-stage filter device III to remove colloid, bacteria, algae and other large-molecular pollutants and/or smaller impurities and heavy metals. Here, the PP cotton filter element and the activated carbon filter element are preferably replaced periodically because of their low reversible filtration characteristics and low cost, while the reverse osmosis membrane filter element 3 is the most important filter element of the whole filtration system, and are preferably cleaned periodically to achieve recycling because of their high reversible filtration characteristics and high cost, so that the backwash device V is additionally installed through the branch pipe. And back flush device V includes water purification storage tank 8 and first increase pump 9 and the first check valve 10 that connect gradually on the pipeline, when needs wash reverse osmosis membrane filter core 3, opens first increase pump 9 and first check valve 10, and the water purification that stores in water purification storage tank 8 is through first increase pump 9 pumps and then gets into to wash reverse osmosis membrane filter core 3 from the dense water inlet 6 department at the top of the dense water district B of tertiary filter equipment III, and the waste water after washing can be followed the sewage discharge port 7 of the bottom of the dense water district B of tertiary filter equipment III and discharged. The specific description is as follows: the low reversible filtration properties refer to the PP cotton filter cartridge and the activated carbon filter cartridge which, after use, are penetrated by magazines therein and are not most effectively removed by washing; the high reversible filtering characteristic means that the magazines on the reverse osmosis membrane filter core can be washed out by washing a great part of magazines after the reverse osmosis membrane filter core is filtered, so that the filtering performance of the reverse osmosis membrane filter core is further improved, the reverse osmosis membrane filter core does not influence the reuse to a certain extent, and the magazines are not recycled indefinitely in the service life range of the reverse osmosis membrane filter core.
Preferably, the reverse osmosis membrane filter element 3 is an ultrafiltration membrane filter element or an RO membrane filter element. When the ultrafiltration membrane filter element is selected, the filtering precision is 0.01 mu m, so that some macromolecular pollutants such as colloid, bacteria, algae and the like can be filtered, but metal ions cannot be filtered; when the RO reverse osmosis membrane filter element is selected, the pores of 0.1nm can block basically all impurities and heavy metals, so that pure H 2 O is obtained.
Preferably, a second booster pump 11 and a second check valve 12 are arranged on the pipelines of the secondary filter device II and the tertiary filter device III. Here, considering that the operation principle of the RO membrane 3 is opposite to that of general water, the water entering the RO membrane 3 needs to be pressurized, so that the water can flow from high concentration to low concentration, and reverse osmosis is formed, and the second one-way valve 12 can ensure that the water filtered by the secondary filtering device II flows unidirectionally to the concentrated water area B without reverse flow, and simultaneously can ensure that the purified water pumped by the purified water storage tank 8 in the back flushing device V flows only to the concentrated water area B without flowing to the secondary filtering device II.
Preferably, the bottoms of the first-stage filtering device I, the second-stage filtering device II and the fourth-stage filtering device IV are respectively provided with a sewage outlet 7 which is used for discharging accumulated water accumulated in the weekdays or cleaning residual water left by the filtering devices when the filter elements are replaced.
Preferably, the sewage discharge ports 7 are each provided with a sewage discharge valve 13 for controlling the closing and opening of the sewage discharge ports.
The multi-stage filtration system provided by the utility model is characterized in that raw water coming from a raw water supply system is filtered by a first-stage filtration device I, a second-stage filtration device II, a third-stage filtration device III and a fourth-stage filtration device IV in sequence and then is used as industrial or domestic water. And a PP cotton filter element 1 is arranged in the primary filter device I, a coarse activated carbon filter element 2 is arranged in the secondary filter device II, a reverse osmosis membrane filter element 3 is arranged in the tertiary filter device III, and a fine activated carbon filter element 4 is arranged in the quaternary filter device IV. And a back flushing device V is arranged on the three-stage filtering device III. Specifically, the PP cotton filter element in the primary filter device I mainly has the effects that large particle impurities in raw water are filtered firstly, PP cotton is wound like a large piece of cloth with holes in a plurality of layers around a porous water pipe, the inner layer fiber which is closer to the water pipe is thinner and tighter, the fiber which is closer to the outer layer is thicker and looser, each layer of cloth can intercept impurities in water, the filtering precision is 1-5 mu m, water flows from the outside to the inside of the PP cotton, the filtering precision is higher when the pore diameter is smaller and the impurities are blocked on the cloth of each layer, the holes are blocked, the color of the PP cotton is intuitively changed, So the filter element of the PP cotton needs to be replaced frequently, and the price is low when the PP cotton is used as a primary filter element; the coarse activated carbon filter element in the secondary filter device II is used for adsorbing impurities, peculiar smell, residual chlorine and other harmful substances in water; the fine activated carbon filter element 4 in the four-stage filtering device IV is used for improving the taste and removing heavy metal lead and the like; the activated carbon filter element has a service life which is slightly longer than that of pp cotton, the activated carbon filter element is replaced for a long time, and the activated carbon filter element is relatively low in price; and the reverse osmosis membrane filter element 3 in the three-stage filtering device III is used as the most important filtering component of the whole filtering system: 1) If the ultrafiltration membrane filter core is selected, the filtering precision is 0.01 mu m, so that some macromolecular pollutants such as colloid, bacteria, algae and the like can be filtered, but metal ions cannot be filtered; 2) If the RO reverse osmosis membrane filter element is selected, the pores of 0.1nm can block basically all impurities and heavy metals, so that pure H 2 O is obtained; the ultrafiltration membrane filter element and the RO reverse osmosis membrane filter element are quite high in price compared with the PP cotton filter element and the active carbon filter element, if the ultrafiltration membrane filter element and the RO reverse osmosis membrane filter element are simply considered to be replaced, the cost is not reduced, and the ultrafiltration membrane filter element and the RO reverse osmosis membrane filter element are preferably recycled through regular flushing, so that the effect of regularly cleaning the reverse osmosis membrane filter element can be achieved through the arrangement of the back flushing device V. Namely, the PP cotton filter element and the activated carbon filter element are more suitable for regular replacement because of low reversible filtering characteristics and low cost, and the reverse osmosis membrane filter element 3 is used as the most important filtering component of the whole filtering system, and is more suitable for repeated utilization because of high reversible filtering characteristics and high cost, so that a back flushing device is additionally arranged through a branch pipeline. The specific description is as follows: the low reversible filtration properties refer to the PP cotton filter cartridge and the activated carbon filter cartridge which, after use, are penetrated by magazines therein and are not most effectively removed by washing; the high reversible filtering characteristic means that the magazines on the reverse osmosis membrane filter core can be washed out by washing a great part of magazines after the reverse osmosis membrane filter core is filtered, so that the filtering performance of the reverse osmosis membrane filter core is further improved, the reverse osmosis membrane filter core does not influence the reuse to a certain extent, and the magazines are not recycled indefinitely in the service life range of the reverse osmosis membrane filter core. So whole filtration system is according to filter core reasonable optimization overall arrangement, the hierarchical arrangement of different materials, filters the raw water step by step, and large granule impurity filters through the cotton filter core of PP earlier, and harmful substance such as impurity, peculiar smell, residual chlorine adsorb through coarse active carbon filter core, and less impurity and macromolecular pollutant or with heavy metal filter through reverse osmosis membrane filter core, and fine active carbon filter core is used for promoting taste and getting rid of heavy metal plumbous etc. at last. Therefore, the filter elements made of different materials are reasonably replaced according to different performances and costs or are washed by adding a backflushing device to achieve the aim of repeated use, so that the use cost of the filter elements at all levels is effectively controlled, and the service life of the filter elements is maximized as far as possible.
The utility model also provides a water purifying device, which comprises the multi-stage filtration system, and has all functions and beneficial effects of the multi-stage filtration system, and the details are not repeated here.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; while the utility model has been described in detail with reference to the foregoing embodiments, it will be appreciated by those skilled in the art that variations may be made in the techniques described in the foregoing embodiments, or equivalents may be substituted for in part or in whole; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (6)
1. The multistage filtering system is characterized by comprising a first-stage filtering device, a second-stage filtering device, a third-stage filtering device and a fourth-stage filtering device, wherein the first-stage filtering device, the second-stage filtering device, the third-stage filtering device and the fourth-stage filtering device are sequentially connected in series through pipelines;
The primary filter device is internally provided with a PP cotton filter element, the secondary filter device is internally provided with a coarse active carbon filter element, the tertiary filter device is internally provided with a reverse osmosis membrane filter element, and the quaternary filter device is internally provided with a fine active carbon filter element;
The internal working cavity of the three-stage filtering device is divided into a water purifying area and a concentrated water area which are mutually independent by a reverse osmosis membrane filter element;
The bottom of the water purifying area is provided with a water purifying outlet, one end of the water purifying outlet is connected with the water inlet of the four-stage filtering device through a pipeline and one end of a tee joint, one end of the water purifying outlet is connected with the back flushing device and then is connected with the concentrated water inlet at the top of the concentrated water area, and the bottom of the concentrated water area is provided with a sewage outlet;
The back flushing device comprises a purified water storage tank, a first increasing pump and a first one-way valve which are sequentially connected to the pipeline.
2. The multi-stage filtration system of claim 1, wherein the reverse osmosis membrane cartridge is an ultrafiltration membrane cartridge or an RO membrane cartridge.
3. The multi-stage filtration system of claim 2, wherein a second booster pump and a second check valve are provided on the piping of the two-stage filtration device and the three-stage filtration device.
4. The multi-stage filtration system of claim 1, wherein bottoms of the primary filter device, the secondary filter device, and the quaternary filter device are each provided with a sewage drain.
5. The multi-stage filtration system of claim 4, wherein each of said reject ports is equipped with a reject valve.
6. A water purification apparatus comprising a multi-stage filtration system as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323175304.5U CN221420914U (en) | 2023-11-24 | 2023-11-24 | Multistage filtration system and water purification equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323175304.5U CN221420914U (en) | 2023-11-24 | 2023-11-24 | Multistage filtration system and water purification equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221420914U true CN221420914U (en) | 2024-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323175304.5U Active CN221420914U (en) | 2023-11-24 | 2023-11-24 | Multistage filtration system and water purification equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221420914U (en) |
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2023
- 2023-11-24 CN CN202323175304.5U patent/CN221420914U/en active Active
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