CN106630231A - Backwash self-cleaning multi-effect water purifier - Google Patents

Abstract

The invention provides a recoil self-cleaning multi-effect water purifier, the water purifier is divided into a primary filter element assembly and a secondary filter element assembly, the primary filter element assembly consists of a housing and an ultrafiltration membrane assembly located in the housing Composition; the ultrafiltration membrane module is nested in the housing, forming a jacket space with the housing; the side of the ultrafiltration membrane module is provided with four water inlets and outlets connected to the jacket space; The housing includes three parts, the front section, the middle section and the rear section connected by two clamps; the front section is provided with a main water inlet pipe, and the rear section is provided with a sewage outlet pipe; the main water inlet pipe is connected with a bypass backwash inlet The water pipe leads to the middle section and is connected with the space of the jacket; the main water inlet pipe and the sewage outlet pipe communicate with the ultrafiltration membrane module. By improving the structure of the water purifier itself, the present invention can realize the easy disassembly of the filter element, and the filter element can be backwashed without disassembly. At the same time, the filter level can be selected according to the filtering requirements, and water sources of different water quality can be used as required.

Description

Recoil self-cleaning multi-effect water purifier

【Technical field】

The invention relates to a recoil self-cleaning multi-effect water purifier, in particular to the field of water purification.

【Background technique】

In the 1970s, the United States found that tap water would produce chloroform, chloroacetic acid and other disinfection by-products after chlorine disinfection, and these disinfection by-products are carcinogenic, mutagenic, and distortion-inducing, so-called "three causes". In addition, tap water also detected Harmful substances such as lead, fluorine, and arsenic, therefore, in the early 1980s, American families used water purifiers one after another. Facing the expansion of industrial development scale in China, the water quality is seriously polluted, the quality of tap water is poor, and the water plants add more chlorine, the tap water has a smell of chlorine, and the taste is not good. There are more than 1,200 domestic manufacturers of household water purifiers, more formal ones. In addition, there are a large number of water purifier manufacturers that do not have sanitation permits and do not plan to apply for sanitation permits, totaling about 3,000. There are three kinds of filtration methods: adsorption filtration, membrane filtration and disinfection. Adsorption filtration adopts activated carbon adsorption or activated carbon fiber adsorption filtration. The service life of the filter element is 1-2 months. The filter element is replaced frequently and the cost of use is high. Disinfection and sterilization often use silver-infiltrated activated carbon, ultraviolet disinfection, etc., which are now used as auxiliary means. Membrane filtration is the most important technological breakthrough in the past ten years. According to different membrane selectivity, it can be divided into reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF) and microfiltration (MF). In foreign countries, ultrafiltration is mainly used in drinking water treatment, while in my country it is mainly used in industrial wastewater reuse as pretreatment of reverse osmosis. In the domestic water industry market, ultrafiltration technology has been used in industrial wastewater such as electric power, steel, and chemical industry. The processing field has been widely used. Among the existing invention patents using PVDF as the filter material, the one disclosed on May 28, 2014, the publication number is 103816807B, a RO water purifier without wastewater; the one disclosed on December 24, 2014, the publication number is 104230044B- A reverse osmosis non-waste water purification system; disclosed on December 25, 2013, the publication number is 201310437284.6 A preparation method of a solid-liquid separation tube-type combined micro-ultramembrane filtration water purification device, etc., there are several problems , First, the filter element needs to be taken out for cleaning; Second, the structure is complex, and the waste water cannot be directly discharged outside the pipe; Third, the degree of filtration cannot be independently selected according to the water quality; Fourth, cost control.

【Content of invention】

The technical problem to be solved by the present invention is to provide a recoil self-cleaning multi-effect water purifier. The recoil self-cleaning multi-effect water purifier realized by the present invention solves the deficiencies in the existing technology and structure. By improving the structure of the water purifier itself, the filter element can be disassembled easily, and the filter element can be backwashed without disassembly. At the same time, The filtration level can be selected according to the filtration needs, and water sources of different water quality can be quoted according to the needs.

The present invention is achieved in this way: a recoil self-cleaning multi-effect water purifier, comprising a primary filter element unit and a secondary filter element unit, characterized in that: the primary filter element assembly consists of a housing and an ultrafiltration filter located in the housing The membrane module is composed of; a jacket space is formed between the ultrafiltration membrane module and the housing; four water inlets and outlets are provided on the side of the ultrafiltration membrane module to connect with the jacket space; the housing includes a The front section, the middle section and the back section are connected by two clamps; the front section is provided with a main water inlet pipe, and the rear section is provided with a sewage outlet pipe; the main water inlet pipe is connected with a bypass backwash water inlet pipe to the middle section , and connected with the jacket space; the main water inlet pipe and the sewage outlet pipe communicate with the ultrafiltration membrane module.

Further, the secondary filter element assembly includes a front end cover, a rear end cover and a secondary filter element cartridge connected by two clamps; the front end cover is provided with a connecting pipe connected to the middle section; the rear end cover is connected to the clean water Outlet pipe; the front and rear ends of the secondary filter cartridge are provided with retaining rings with filter screens; the retaining rings are fastened to the secondary filter cartridge by screws.

Further, several ultrafiltration membrane filter elements are fixed inside the ultrafiltration membrane module; the ultrafiltration membrane filter elements are made of PVDF material.

Further, KDF, activated carbon, acid-washed coconut shell activated carbon or medical stone particles are filled in layers in the secondary filter cartridge.

The present invention has the advantages that the filter element can be disassembled easily, and the filter element can be backwashed without disassembly; at the same time, the filter level can be selected according to the filtering requirements, and water sources of different water quality can be used as required.

【Description of drawings】

The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is a schematic front view of the overall structure of the present invention.

Fig. 2 is a schematic top view of the overall structure of the present invention.

Fig. 3 is a schematic diagram of the ultrafiltration membrane module of the present invention.

Fig. 4 is a schematic diagram of the secondary filter cartridge of the present invention.

【detailed description】

Please refer to Figures 1, 2 and 3, a recoil self-cleaning multi-effect water purifier is divided into a primary filter element assembly 1 and a secondary filter element assembly 2. The primary filter element assembly is composed of a housing 15 and an ultrafiltration membrane assembly 14 located in the housing 15; the ultrafiltration membrane assembly 14 is nested in the housing 15, forming a jacket space with the housing ; The side of the ultrafiltration membrane module 14 is provided with four water inlets and outlets (A, B, C, D) to connect with the jacket space; 152 and rear section 153; the front section 151 is provided with a main water inlet pipe 3 and a pressure gauge 5, and the rear section 153 is provided with a sewage outlet pipe 9; the main water inlet pipe 3 is connected with a bypass backwash water inlet pipe 6 to The middle section 152 is connected with the space of the jacket; the main water inlet pipe 3 and the sewage outlet pipe 9 are in communication with the ultrafiltration membrane module 14 .

Please refer to Figures 1 and 4, the secondary filter element assembly 2 includes a front end cover 21 connected by two clamps 20, a rear end cover 22 and a secondary filter cartridge 17; The middle section 152; the rear end cover 22 is connected to the clean water outlet pipe 11; the front and rear ends of the secondary filter cartridge 17 are provided with retaining rings 18 with filter screens; the retaining rings 18 are fastened to the secondary On the filter cartridge 17.

Please refer to FIG. 4 , the secondary filter cartridge 17 is made of PVC material, and the filter cartridge can be filled with KDF, activated carbon, acid-washed coconut shell activated carbon or medical stone particles in layers.

The working principle of the present invention is as follows: open the valve 4 on the main water inlet pipe 3 and the valve 12 on the clean water outlet pipe 11, close the valve 7 on the bypass backwash inlet pipe 6 and the valve 10 on the sewage outlet pipe 9. The water to be treated enters the ultrafiltration membrane module 14 from the main water inlet pipe 3. Driven by water pressure, the water passes through the ultrafiltration membrane filter element 16 to filter from the inside to the outside. It is intercepted by the membrane, and the substances smaller than the pore size of the membrane pass through the membrane. Therefore, impurities such as macromolecules, bacteria, and sand remain inside the membrane, and the cleaned water flows out through the four ports A, B, C, and D to the shell 15 and In the jacket of the ultrafiltration membrane module 14 , it is led to the filter element 19 of the secondary filter module 2 through the right-angle connecting pipe 13 for further filtration, and finally discharged from the clean water outlet pipe 11 . The ultrafiltration membrane in the ultrafiltration membrane module is made of PVDF material, and its structure is a slender linear hollow fiber membrane. The pore size of the membrane is a microporous filtration membrane of 0.001-0.002 microns. The material has a long service life and will not be used for 3-5 years. Disassembly, washing and replacement only need to backwash, which can save the investment cost of filter elements. The secondary filter element is an optional device, and the material of the filter element is KDF, which also has a long service life and can improve the activation degree of water.

The present invention can select the filtration level according to the filtration requirements, and use water sources of different water quality according to the needs, that is, the water channel is divided into two channels, and one channel can be used as pure water and direct drinking water after being filtered through the second stage and led to the kitchen through the water outlet pipe 11; Another road water channel leads to other non-drinking water places such as toilet and laundry room through sewage outlet pipe 9 after one-level filtration.

The present invention also has a backwashing function, and the working principle is as follows: close the valve 4 on the main water inlet pipe 3 and the valve 12 on the clean water outlet pipe 11, open the valve 7 on the bypass backwashing water inlet pipe 6 and the sewage outlet pipe 9 The valve 10. The treated water flows through the valve 7 into the jacket between the housing 15 of the primary filtration module 1 and the ultrafiltration membrane module 14. After the membrane filter element 16 is filtered from the outside to the inside, the impurities such as macromolecules, bacteria, silt, etc. left in the membrane are discharged by the valve 10 on the sewage outlet pipe 11 along with the water. The backwashing valve 7 can adopt two kinds of manual type and automatic type, and the manual type is manually opened and flushed every 1-2 months, and the automatic type adopts a timing water valve, and the timing is automatically backwashed.

The two-stage filter element components of the present invention are all connected in a clamp-type connection mode, and a clamp is provided at the front and rear of each filter core component, which has the function of convenient replacement of the filter core. The replacement process of the filter element of the primary filter assembly: when disassembling, open the clamp 8 located on the shell 15 of the primary filter element assembly 14, pull out the filter element 16, and lock the clamp 8 after replacing the filter element 16. Replacement process of the filter element of the secondary filter assembly: When disassembling, open the clamp 20, pull out the filter cartridge 17, unscrew the fastening screw of the retaining ring 18 at one end, replace the filter element 19 in the filter cartridge 17 as required, and tighten the screws after replacing the filter element 19 , and then clamp 20 is locked.

The invention realizes the easy disassembly of the filter core, and the filter core can be backwashed without disassembly. At the same time, the filter level can be selected according to the filtering requirements, and water sources of different water quality can be used according to the needs.

Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments we have described are only illustrative, rather than used to limit the scope of the present invention. Equivalent modifications and changes made by skilled personnel in accordance with the spirit of the present invention shall fall within the protection scope of the claims of the present invention.

Claims (4)

1. A recoil self-cleaning multi-effect water purifier, comprising a primary filter element unit and a secondary filter element unit, is characterized in that: the primary filter element assembly is made up of a housing and an ultrafiltration membrane assembly located in the housing; A jacket space is formed between the ultrafiltration membrane module and the housing; four water inlets and outlets are arranged on the side of the ultrafiltration membrane module to connect with the jacket space; The front section, the middle section and the back section are three parts; the front section is provided with a main water inlet pipe, and the rear section is provided with a sewage outlet pipe; the main water inlet pipe is connected with a bypass backwash water inlet pipe to the middle section, and is connected with the The jacket space is connected; the main water inlet pipe and the sewage outlet pipe communicate with the ultrafiltration membrane module. 2. The recoil self-cleaning multi-effect water purifier as claimed in claim 1, wherein: said secondary filter element assembly comprises a front end cover, a rear end cover and a secondary filter cartridge connected by two hoops; The front end cover is provided with a connecting pipe connected to the middle section; the rear end cover is connected to the water outlet pipe; the front and rear ends of the secondary filter cartridge are provided with retaining rings with filter screens; the retaining rings are fastened to the above the secondary filter cartridge. 3. The recoil self-cleaning multi-effect water purifier according to claim 1, characterized in that: several ultrafiltration membrane filter elements are fixed inside the ultrafiltration membrane module; the ultrafiltration membrane filter elements are made of PVDF material. 4. The recoil self-cleaning multi-effect water purifier according to claim 2, characterized in that: KDF, activated carbon, acid-washed coconut shell activated carbon or medical stone particles are filled in layers in the secondary filter cartridge.