Self-cleaning and self-disinfecting water-saving water purifier

Abstract

The utility model relates to the technical field of water purifiers, and discloses a self-cleaning and self-disinfecting water-saving water purifier which comprises a ceramic microfiltration membrane assembly, a nanofiltration membrane assembly and a rear activated carbon filter element, the liquid outlet end of the ceramic microfiltration membrane assembly is connected with a high-pressure pump through a pipeline, the liquid outlet end of the high-pressure pump is connected with the liquid inlet end of the nanofiltration membrane assembly through a pipeline, and the liquid outlet end of the nanofiltration membrane assembly is connected with the liquid inlet end of the rear activated carbon filter element through a pipeline; the liquid outlet end of the rear activated carbon filter element is connected with an external water outlet faucet; the UV sterilizing lamp is arranged in the ceramic membrane shell, so that the water use safety is ensured, and the sewage blockage condition of the system is reduced; the strong brine collecting tank is arranged, and in the prior art, strong brine is basically discharged into a sewer, so that resource waste is caused, the strong brine collecting tank of the system equipment is used for backwashing the ceramic membrane by utilizing strong brine, and resources are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifiers, in particular to a self-cleaning, self-disinfecting, water-saving water purifier. Background Art

[0002] A water purifier, also called a water purifier or water purifier, is a water treatment device that deeply filters and purifies water according to the requirements for water use. The water purifier we usually talk about generally refers to a small purifier used for home use. Its technical core is the filter membrane in the filter element device, and the main technologies come from three types: ultrafiltration membrane, RO reverse osmosis membrane, and nanofiltration membrane.

[0003] At present, the water purifier market mostly uses reverse osmosis membrane as the core unit of filtration. The membrane has a dense property and can filter all ions in the water. Therefore, this type of water purifier requires high filtration pressure, generates a lot of concentrated water in the water production process, and has a low utilization rate of concentrated water. Most of them are connected to the sewer and discharged directly into the sewer, causing a huge waste of water resources. Moreover, after long-term use, the water output is reduced and the water quality deteriorates. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a self-cleaning and self-disinfecting water-saving water purifier, which has the advantages of providing a more energy-saving and convenient drinking water while improving the quality of drinking water for residents. It solves the problems of high pressure required for filtration, large amount of concentrated water generated in the water production process, low utilization rate of concentrated water, most of which is connected to the sewer and directly discharged into the sewer, causing great waste of water resources, and reduced water output and deterioration of water quality after long-term use.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-cleaning and self-disinfecting water-saving water purifier, comprising a ceramic microfiltration membrane assembly, a nanofiltration membrane assembly and a post-activated carbon filter element;

[0008] The liquid outlet of the ceramic microfiltration membrane assembly is connected to a high-pressure pump through a pipeline, the liquid outlet of the high-pressure pump is connected to the liquid inlet of the nanofiltration membrane assembly through a pipeline, the liquid outlet of the nanofiltration membrane assembly is connected to the liquid inlet of the post-activated carbon filter element through a pipeline, and the liquid outlet of the post-activated carbon filter element is connected to an external water outlet faucet.

[0009] Preferably, the ceramic microfiltration membrane assembly comprises:

[0010] Ceramic microfiltration membrane housing;

[0011] A ceramic microfiltration membrane filter element is arranged inside the ceramic microfiltration membrane shell;

[0012] The UV radiation lamp is fixedly connected to the inner wall of the ceramic microfiltration membrane shell.

[0013] Preferably, the waste liquid end of the nanofiltration membrane assembly is connected to a concentrated brine storage tank via a pipeline, the liquid outlet end of the concentrated brine storage tank is connected to a low-pressure pump via a pipeline, and the liquid outlet end of the low-pressure pump is connected to the liquid outlet pipeline of the ceramic microfiltration membrane assembly via a pipeline.

[0014] Preferably, a check valve is provided on the liquid outlet pipe of the ceramic microfiltration membrane assembly.

[0015] Preferably, the liquid outlet pipe of the post-activated carbon filter element is connected to a mixing tank via a pipe, the liquid outlet end of the mixing tank is connected to a backwash pump via a pipe, and the liquid outlet end of the backwash pump is connected to the liquid outlet pipe of the nanofiltration membrane assembly via a pipe.

[0016] Preferably, a stirring mechanism is provided inside the mixing tank.

[0017] Preferably, the drug inlet end of the mixing tank is connected to a drug adding pump via a pipeline.

[0018] Preferably, a second check valve is provided on the liquid outlet pipe of the nanofiltration membrane assembly.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the utility model provides a self-cleaning and self-disinfecting water-saving water purifier, which has the following beneficial effects:

[0021] 1. This self-cleaning and self-disinfecting water-saving water purifier has a UV sterilization lamp installed inside the ceramic membrane shell to ensure water safety and reduce the occurrence of system blockage.

[0022] 2. The self-cleaning and self-disinfecting water-saving water purifier is equipped with a concentrated brine collection tank. The existing technology basically discharges concentrated water into the sewer, resulting in a waste of resources. This system is equipped with a concentrated brine collection tank, which uses concentrated brine to backwash the ceramic membrane, saving resources.

[0023] 3. This self-cleaning and self-disinfecting water-saving water purifier eliminates the water production tank. Products on the market now generally have pressure water production tanks, which have high requirements for the installation environment. The core unit of this system uses nanofiltration membrane, and the water production is 1.5 to 2 times that of ordinary reverse osmosis membrane, which can fully meet the water production needs of taps.

[0024] 4. The self-cleaning and self-disinfecting water-saving water purifier is equipped with a mixing tank to collect the produced water and mix it with the reagent. When the pressure of the water purifier is too low, the nanofiltration membrane component can be automatically backwashed to achieve the purpose of self-cleaning and disinfection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the water purification process in the utility model;

[0027] Figure 3 This is a structural schematic diagram of the ceramic membrane backwash process in the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the nanofiltration membrane backwashing process in the utility model;

[0029] Figure 5 It is a structural schematic diagram of the ceramic microfiltration membrane component in the utility model.

[0030] In the figure:

[0031] 10. Ceramic microfiltration membrane assembly; 11. Ceramic microfiltration membrane shell; 12. Ceramic microfiltration membrane filter element; 13. UV radiation lamp; 20. Nanofiltration membrane assembly; 30. Post-activated carbon filter element; 40. High-pressure pump; 50. Brine storage tank; 60. Low-pressure pump; 70. Check valve one; 80. Mixing tank; 90. Dosing pump; 100. Backwash pump; 110. Check valve two. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0034] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0036] The water purifier market mostly uses reverse osmosis membrane as the core unit of filtration. The membrane has a dense property and can filter all ions in the water.

[0037] In the related technology, the filtration pressure required by the water purifier is high, a large amount of concentrated water is generated during the water production process, and the utilization rate of the concentrated water is low. Most of the concentrated water is connected to the sewer and discharged directly into the sewer, causing a huge waste of water resources. Moreover, after long-term use, the water output is reduced and the water quality deteriorates.

[0038] In order to solve the problems in the related art to a certain extent, the embodiment of the present application provides a self-cleaning and self-disinfecting water-saving water purifier, which selects nanofiltration membrane as the core filtration unit. The characteristics of the membrane are targeted removal of hardness components such as Ca and Mg ions, retaining trace elements beneficial to the human body, greatly reducing the required working pressure, and the water output is more than 1.5 times that of the reverse osmosis membrane. In view of the characteristics of reduced water output and deterioration of water quality, UV sterilization lamps and post-activated carbon are set to ensure the quality and quantity of the water output. From a structural perspective, most of the current commercial water purifiers use four to five levels of filtration. In comparison, this water purifier uses three-stage filtration, which saves energy and has better power utilization, and therefore has great application potential.

[0039] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0040] Combination Figure 1-Figure 5 , the embodiment of the present application provides a self-cleaning and self-disinfecting water-saving water purifier, including a ceramic microfiltration membrane assembly 10, a nanofiltration membrane assembly 20 and a post-activated carbon filter element 30;

[0041] The liquid outlet of the ceramic microfiltration membrane assembly 10 is connected to a high-pressure pump 40 through a pipeline, the liquid outlet of the high-pressure pump 40 is connected to the liquid inlet of the nanofiltration membrane assembly 20 through a pipeline, the liquid outlet of the nanofiltration membrane assembly 20 is connected to the liquid inlet of the post-activated carbon filter element 30 through a pipeline, and the liquid outlet of the post-activated carbon filter element 30 is connected to an external water outlet faucet.

[0042] In this embodiment, when producing water, municipal tap water enters the ceramic microfiltration membrane assembly 10 through the water inlet pipe, and the ceramic microfiltration membrane assembly 10 pre-treats and purifies the tap water. Then, under the action of the high-pressure pump 40, it is pressurized into the nanofiltration membrane assembly 20, so that the nanofiltration membrane assembly 20 filters the pretreated water body, and finally enters the post-activated carbon filter element 30 through the pipeline to remove odor, and then produces purified water through the pipeline.

[0043] In some embodiments, the ceramic microfiltration membrane assembly 10 includes: a ceramic microfiltration membrane shell 11; a ceramic microfiltration membrane filter element 12, which is arranged inside the ceramic microfiltration membrane shell 11; and a UV radiation lamp 13, which is fixedly connected to the inner wall of the ceramic microfiltration membrane shell 11.

[0044] In this embodiment, a UV radiation lamp 13 is installed in the ceramic microfiltration membrane shell 11 to inactivate and disinfect the microorganisms in the tap water, thereby ensuring the safety of the water supply and preventing the growth of microorganisms that may cause membrane fouling and clogging.

[0045] In some embodiments, the waste liquid end of the nanofiltration membrane assembly 20 is connected to a concentrated brine storage tank 50 through a pipeline, the liquid outlet end of the concentrated brine storage tank 50 is connected to a low-pressure pump 60 through a pipeline, the liquid outlet end of the low-pressure pump 60 is connected to the liquid outlet pipeline of the ceramic microfiltration membrane assembly 10 through a pipeline, and a check valve 70 is provided on the liquid outlet pipeline of the ceramic microfiltration membrane assembly 10.

[0046] In this embodiment, the nanofiltration membrane concentrate produced by the nanofiltration membrane assembly 20 is collected in a concentrated brine storage tank 50, and a low-pressure pump 60 is provided to backwash the ceramic microfiltration membrane assembly 10 to save fresh water.

[0047] In some embodiments, the liquid outlet pipe of the post-activated carbon filter element 30 is connected to the mixing tank 80 through a pipe, the liquid outlet end of the mixing tank 80 is connected to the backwash pump 100 through a pipe, the liquid outlet end of the backwash pump 100 is connected to the liquid outlet pipe of the nanofiltration membrane assembly 20 through a pipe, the drug inlet end of the mixing tank 80 is connected to the dosing pump 90 through a pipe, and a check valve 110 is provided on the liquid outlet pipe of the nanofiltration membrane assembly 20.

[0048] In this embodiment, a portion of the purified water produced by the post-activated carbon filter element 30 is collected by a mixing tank 80, and then the alkaline liquid medicine or disinfectant is pumped into the mixing tank 80 for mixing through a dosing pump 90. When the nanofiltration membrane assembly 20 is backwashed, the liquid medicine is pumped into the water inlet port of the nanofiltration membrane assembly 20 through a backwash pump 100 for backwashing self-cleaning and self-disinfection.

[0049] In some embodiments, a stirring mechanism is provided inside the mixing tank 80 .

[0050] In some embodiments, a method for preparing a self-cleaning and self-disinfecting water-saving water purifier is also provided, comprising the following steps:

[0051] 1) Microfiltration ceramic membrane is used for pretreatment. The municipal water supply pressure can meet the working conditions of the ceramic microfiltration membrane. The use of municipal pressure saves secondary pressurization and is more energy-efficient. UV sterilization lamps are installed in the membrane shell of the ceramic microfiltration membrane to inactivate and disinfect microorganisms in tap water, ensuring the safety of water supply and preventing the growth of microorganisms that may cause membrane fouling and clogging.

[0052] 2) The water purifier uses a low-pressure nanofiltration membrane as the core unit of filtration. A high-pressure pump is set behind the ceramic microfiltration membrane to perform secondary pressurization on the incoming water to ensure the normal operation of the nanofiltration membrane. The nanofiltration membrane has separation performance for calcium, magnesium ions, scaling ions and organic small molecules with a molecular weight of several hundred in the water, and has a good removal ability for color, hardness and odor. It also has low operating pressure and large water flux. Compared with traditional reverse osmosis membranes, it can retain trace elements that are beneficial to the human body and has higher use value;

[0053] 3) Post-activated carbon filter, the activated carbon filter element has the effect of removing odor, removing harmful substances and absorbing suspended solid particles. The activated carbon filter element ensures that the water from the water purifier tastes more comfortable, and the water is cleaner, healthier and purer;

[0054] 4) This water-saving water purifier is uniquely equipped with a concentrated brine storage tank. The concentrated water from the nanofiltration membrane is collected in the concentrated brine storage tank. A low-pressure flushing pump and solenoid valve are set for backwashing the ceramic microfiltration membrane to save fresh water.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0056] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning and self-disinfecting water-saving water purifier, characterized in that: It comprises a ceramic microfiltration membrane assembly (10), a nanofiltration membrane assembly (20) and a post-activated carbon filter element (30); The ceramic microfiltration membrane assembly (10) comprises: Ceramic microfiltration membrane housing (11); A ceramic microfiltration membrane filter element (12), arranged inside the ceramic microfiltration membrane housing (11); A UV radiation lamp (13) fixedly connected to the inner wall of the ceramic microfiltration membrane housing (11); The liquid outlet of the ceramic microfiltration membrane assembly (10) is connected to a high-pressure pump (40) via a pipeline, the liquid outlet of the high-pressure pump (40) is connected to the liquid inlet of the nanofiltration membrane assembly (20) via a pipeline, the liquid outlet of the nanofiltration membrane assembly (20) is connected to the liquid inlet of the post-activated carbon filter element (30) via a pipeline, and the liquid outlet of the post-activated carbon filter element (30) is connected to an external water outlet tap.

2. A self-cleaning and self-disinfecting water-saving water purifier according to claim 1, characterized in that: The waste liquid end of the nanofiltration membrane assembly (20) is connected to a concentrated brine storage tank (50) via a pipeline, the liquid outlet end of the concentrated brine storage tank (50) is connected to a low-pressure pump (60) via a pipeline, and the liquid outlet end of the low-pressure pump (60) is connected to the liquid outlet pipeline of the ceramic microfiltration membrane assembly (10) via a pipeline.

3. A self-cleaning and self-disinfecting water-saving water purifier according to claim 1, characterized in that: A check valve (70) is provided on the liquid outlet pipe of the ceramic microfiltration membrane assembly (10).

4. A self-cleaning and self-disinfecting water-saving water purifier according to claim 1, characterized in that: The liquid outlet pipe of the post-activated carbon filter element (30) is connected to a mixing tank (80) via a pipe, the liquid outlet end of the mixing tank (80) is connected to a backwash pump (100) via a pipe, and the liquid outlet end of the backwash pump (100) is connected to the liquid outlet pipe of the nanofiltration membrane assembly (20) via a pipe.

5. A self-cleaning and self-disinfecting water-saving water purifier according to claim 4, characterized in that: A stirring mechanism is provided inside the mixing tank (80).

6. A self-cleaning and self-disinfecting water-saving water purifier according to claim 4, characterized in that: The drug inlet end of the mixing tank (80) is connected to a drug adding pump (90) via a pipeline.

7. A self-cleaning and self-disinfecting water-saving water purifier according to claim 1, characterized in that: A second check valve (110) is provided on the liquid outlet pipeline of the nanofiltration membrane assembly (20).

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