CN211170236U

CN211170236U - Household water ionizer

Info

Publication number: CN211170236U
Application number: CN201922002114.0U
Authority: CN
Inventors: 李毕忠; 封东廷; 彭红芳; 张希平
Original assignee: Beijing Chamgo Nano Tech Co ltd
Current assignee: Beijing Chamgo Nano Tech Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-08-04
Anticipated expiration: 2029-11-19

Abstract

The utility model belongs to the technical field of water purifying equipment, in particular to a household water ionizer, which comprises a preposed filtering device, a water molecule activation filter element and an electrolysis sterilization module which are arranged on a raw water pipeline in sequence, wherein the water outlet of the electrolysis sterilization module is communicated to a water purifying tap through a water purifying pipeline, and the water outlet of the water purifying tap is provided with an antibacterial filtering device; the filler of the water molecule activation filter element comprises a negative potential ball; the filler of the antibacterial filter device comprises antibacterial fibers. Has the advantages that: the utility model discloses a domestic water ionizer, the negative potential ball of hydrone activation filter core can puncture the hydrone in the twinkling of an eye, becomes the pure water that originally does not electrically conduct into electrically conductive ionized water, reaches the purpose of activation micro molecule water, and the electrolysis of electrolysis sterilization module again improves electrolysis reaction efficiency and electrolysis bactericidal effect greatly; the antibacterial fiber of the antibacterial filter element device effectively isolates bacteria in the air from entering the water ionizer, and secondary pollution caused by mass propagation on the inner wall of the pipeline is avoided.

Description

Household water ionizer

Technical Field

The utility model belongs to the technical field of water purification unit, especially, relate to a domestic water ionizer.

Background

With the increasingly prominent problems of drinking water safety and health, the household water purifier is more and more concerned by people. At present, the most commonly used water purifier in the family is provided with RO membrane reverse osmosis technology. However, due to the reasons of broken filaments of the RO membrane, long service time of the filter element, large water quality difference of various places, air exposure of the water outlet and the like, the total number of discharged water colonies exceeds the standard, the sterilization mode commonly used by the water purifiers in the market is ultraviolet sterilization, the ultraviolet sterilization device depends on a simple physical sterilization mode, the sterilization efficiency is low, and the ultraviolet lamp needs to be replaced at regular time, so that the sterilization requirement cannot be met; in addition, the water outlet of the water purifier is exposed in the air, and bacteria in the air can enter the water purifier to carry out secondary pollution on the purified water.

The electrolyzed water is hydrogen-rich water, the prerequisite condition for using the water ionizer is that the water quality of the water source is good, if the water quality of the water source used by the water ionizer is poor, the water quality after being electrolyzed by the water ionizer is harmful to the health of human bodies, the drunk heavy metal concentrated water is harmful to the human bodies, and the taste of the water is not good; in addition, the efficiency and the quality of the existing electrolytic sterilization need to be improved, and the improvement of the electrolytic reaction efficiency and the electrolytic sterilization effect is an important research direction of the water ionizer.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the electrolytic sterilization efficiency and quality of the water ionizer in the prior art are remained to be improved and the total number of the discharged bacterial colonies exceeds the standard, the utility model provides a household water ionizer.

In order to solve the technical problem, the technical scheme adopted by the utility model is as follows, the household water ionizer comprises a preposed filtering device, a water molecule activation filter element and an electrolysis sterilization module which are sequentially arranged on a raw water pipeline, wherein a water outlet of the electrolysis sterilization module is communicated to a water purifying tap through a water purifying pipeline, and an antibacterial filtering device is arranged at the water outlet of the water purifying tap; the filler of the water molecule activation filter element comprises a negative potential ball; the filler of the antibacterial filter device comprises antibacterial fibers.

Preferably, the filler of the water molecule activation filter element further comprises an antibacterial ball.

Preferably, the water molecule activation filter element comprises a first shell, a first activation cavity and a second activation cavity are sequentially arranged in the first shell along the water flow direction, the negative potential ball is filled in the first activation cavity, the antibacterial ball is filled in the second activation cavity, and filter screens are fixedly arranged between the water inlet of the water molecule activation filter element and the first activation cavity, between the water outlet of the water molecule activation filter element and the second activation cavity, and between the first activation cavity and the second activation cavity. The water flow sequentially flows through the negative potential ball and the antibacterial ball, and the antibacterial ball is filled in the second activation cavity close to the water outlet of the water molecule activation filter element because the particle size of the antibacterial ball is larger than that of the negative potential ball, so that the filler of the water molecule activation filter element can be effectively prevented from being washed by the water flow to be leaked; the negative potential ball can instantaneously break down water molecules, so that the originally non-conductive purified water is changed into conductive ionized water, the purpose of activating the small molecular water is achieved, and then the electrolysis sterilization module electrolyzes the water, so that the electrolysis reaction efficiency is greatly improved, and the electrolysis sterilization effect is improved; meanwhile, the negative potential ball can instantly break down water molecules to generate components such as hydroxide radicals, hydrogen ions and the like, the PH can be raised to about 7.3-8.3, the outlet water is alkalescent, and even if electrolysis is continuously carried out, bacteria can not generate drug resistance, so that the water outlet of the water ionizer is sanitary and sterile, and the taste is fresh and cool; the antibacterial ball is loaded with nano silver on the basis of the mineralized ball, has effective antibacterial and bacteriostatic effects, and prevents bacteria from propagating in a large amount in the water molecule activation filter element.

Preferably, the antibacterial filtering device comprises a second shell, a first accommodating cavity communicated with the water purifying faucet is formed in the second shell, a second accommodating cavity is fixedly formed in the first accommodating cavity, the antibacterial fibers are filled in the second accommodating cavity, a clean water inlet communicated with the first accommodating cavity and the second accommodating cavity is formed in the top end of the second accommodating cavity, and a clean water outlet communicated with the bottom end of the second accommodating cavity is formed in the bottom end of the shell. The filler of the antibacterial filter element device is made of antibacterial fiber, and is mainly used for isolating bacteria in the air from entering the pipeline and avoiding mass propagation on the inner wall of the pipeline; and the filler of the antibiotic filter core device of this application does not select active carbon, and the reason is that active carbon easily adsorbs the hotbed that becomes bacterial growing, and life cycle is short, needs frequent change.

Preferably, the second shell is fixedly connected with the water purifying tap through threads. The connecting structure is simple and reliable, the operation is convenient, and the cost is lower.

As preferred, the second casing passes through connecting piece and water purification tap fixed connection, the connecting piece includes female sleeve, seal cover and son sleeve, son telescopic one end is the tightening part, and its middle part is radial extension's spacing portion, and its other end is connecting portion, the groove between having seted up in the tightening part, the one end that spacing portion was kept away from in the tightening part is the toper, female sleeve, seal cover and tightening part are all established on the water purification tap, just tightening part, seal cover and female sleeve from interior to exterior set gradually, tightening part and female sleeve threaded connection, connecting portion and second casing threaded connection. The material of the sealing sleeve is silica gel so as to achieve good water leakage prevention effect; the connecting piece is arranged, so that the antibacterial filtering device can be matched and connected with water purifying faucets of different models and sizes, the application range is enlarged, the cost is saved, and the installation is simple and convenient.

Furthermore, the pre-filter device comprises a water inlet electromagnetic valve, a PP filter element, a booster pump, a reverse osmosis membrane filter element, a high-voltage switch and an active carbon filter element which are sequentially arranged on the raw water pipeline, and a purified water outlet of the active carbon filter element is communicated with a water inlet of the water molecule activation filter element; the waste water outlet of the reverse osmosis membrane filter element is communicated with a waste water pipe through a first sewage discharge pipeline, a waste water electromagnetic valve is arranged on the first sewage discharge pipeline, the waste water outlet of the PP filter element is communicated with the waste water pipe through a second sewage discharge pipeline, and a check valve is arranged on the second sewage discharge pipe. The PP filter element can filter most impurities such as suspended matters, particles and scrap iron in water, and the filtered impurities are discharged into the waste water pipe through a second sewage discharge pipeline where the check valve is located; the water filtered with impurities reaches a booster pump, the booster pump applies pressure to a water body to enable the water to pass through a reverse osmosis membrane filter element, the reverse osmosis membrane filter element can filter the impurities such as inorganic salt, heavy metal ions, organic matters, bacteria, colloid, viruses and the like in the water, and the filtered impurities are discharged into a waste water pipe through a first sewage discharge pipeline where a waste water electromagnetic valve is located; the water is effectively removed of organic matters, residual chlorine and other radioactive substances through an active carbon filter element; the water of the raw water pipeline is filtered by the PP filter element, the reverse osmosis membrane filter element and the activated carbon filter element in sequence, and the filtering effect of the water purifier is improved.

Furthermore, a water inlet of the raw water pipeline is communicated with a tap water inlet pipe through a three-way ball valve, and a pressure reducing valve is arranged on the raw water pipeline between the three-way ball valve and the water inlet electromagnetic valve. The installation of relief pressure valve effectively avoids the too big water pressure of former water pipe way.

Furthermore, a first water quality probe is arranged on a raw water pipeline between the PP filter element and the booster pump, and a second water quality probe is arranged on a raw water pipeline between the reverse osmosis membrane filter element and the activated carbon filter element. TDS probe can be chooseed for use to first quality of water probe and second quality of water probe to in the quality of water in the monitoring former water pipe way.

Has the advantages that: the utility model discloses a domestic water ionizer, the negative potential ball of hydrone activation filter core can puncture the hydrone in the twinkling of an eye, becomes the pure water that originally does not electrically conduct into electrically conductive ionized water, reaches the purpose of activation micro molecule water, and the electrolysis of electrolysis sterilization module again has improved electrolysis reaction efficiency greatly, improves the electrolysis bactericidal effect; meanwhile, the negative potential ball can instantly break down water molecules to generate components such as hydroxide radicals, hydrogen ions and the like, the PH can be raised to about 7.3-8.3, the outlet water is alkalescent, and even if electrolysis is continuously carried out, bacteria can not generate drug resistance, so that the water outlet of the water ionizer is sanitary and sterile, and the taste is fresh and cool; the antibacterial balls of the water molecule activation filter element are loaded with nano silver on the basis of the mineralized balls, so that an effective antibacterial and bacteriostatic action is achieved, and bacteria are prevented from being massively propagated in the water molecule activation filter element; the bacterium that antibiotic fiber of antibiotic filter core device was effective in isolated air gets into this water ionizer, avoids breeding in a large number at the pipeline inner wall and causes secondary pollution, and the filler of the antibiotic filter core device of this application does not select active carbon, and the reason is that active carbon easily adsorbs the hotbed that becomes bacterial growing with the organism, and life cycle is short, needs frequent change.

Drawings

FIG. 1 is a schematic diagram of the household water ionizer of the present invention;

FIG. 2 is a schematic sectional view of a water molecule activating filter element of the household water ionizer of the present invention;

FIG. 3 is a schematic view showing the three-dimensional structure of the antibacterial filter device and the water purifying tap (13) according to embodiment 1 of the household water ionizer of this invention;

FIG. 4 is a schematic sectional view of the antibacterial filtering device of the household water ionizer of the present invention;

FIG. 5 is a schematic view showing the three-dimensional structure of the water purifying faucet and the antibacterial filter device of embodiment 2 of the household water ionizer of this invention;

FIG. 6 is an exploded view of the connecting member of embodiment 2 of the home water ionizer of this invention;

the direction of the arrows in fig. 1 indicate the direction of the water flow; the direction of the arrows in fig. 4 indicate the direction of the water flow;

in the figure: 1. PP filter element, 2, reverse osmosis membrane filter element, 3, activated carbon filter element, 4, water molecule activation filter element, 4-1, negative potential ball, 4-2, antibacterial ball, 4-3, first shell, 4-4, filter screen, 5, electrolysis sterilization module, 6, three-way ball valve, 7, pressure reducing valve, 8, water inlet electromagnetic valve, 9, booster pump, 10, high-pressure switch, 11, waste water electromagnetic valve, 12, check valve, 13, water purification faucet, 14, first water quality probe, 15, second water quality probe, 16, raw water pipeline, 17, water purification pipeline, 18, first blow-down pipeline, 19, second blow-down pipeline, 20, waste water pipe, 21, antibacterial filtering device, 21-1, antibacterial fiber, 21-2, second shell, 21-2-1, first containing cavity, 21-2-2, second containing cavity, 21-2-3 parts of clean water inlet, 21-2-4 parts of clean water outlet, 21-2-5 parts of upper cover, 21-3 parts of sealing ring, 22 parts of connecting piece, 22-1 parts of female sleeve, 22-2 parts of sealing sleeve, 22-3 parts of sub sleeve, 22-3-1 parts of tightening part, 22-3-2 parts of limiting part, 22-3-3 parts of connecting part, 22-3-4 parts of intermediate groove.

Detailed Description

Example 1

As shown in fig. 1 to 4, a household water ionizer comprises a pre-filter, a water molecule activation filter element 4 and an electrolytic sterilization module 5, which are sequentially arranged on a raw water pipeline 16, wherein a water outlet of the electrolytic sterilization module 5 is communicated to a water purifying faucet 13 through a water purifying pipeline 17, and the water purifying faucet 13 of the embodiment is a two-part single-control faucet; the filler of the water molecule activation filter element 4 comprises a negative potential ball 4-1 and an antibacterial ball 4-2, wherein the negative potential ball 4-1 can instantly break down water molecules, so that the originally non-conductive purified water is changed into conductive ionized water, the purpose of activating small molecular water is achieved, and then the small molecular water is electrolyzed by the electrolytic sterilization module 5, so that the electrolytic reaction efficiency is greatly improved, and the electrolytic sterilization effect is improved, and the electrolytic sterilization module 5 of the embodiment can be selected from the existing electrolytic sterilization module 5; meanwhile, the negative potential ball 4-1 can instantly break down water molecules to generate components such as hydroxide radicals, hydrogen ions and the like, the PH can be raised to about 7.3-8.3, the outlet water is alkalescent, and even if electrolysis is continuously carried out, bacteria can not generate drug resistance, so that the water outlet of the water ionizer is sanitary and sterile, and the taste is fresh and cool; the antibacterial balls 4-2 are loaded with nano silver on the basis of the mineralized balls, so that an effective antibacterial and bacteriostatic action is achieved, and bacteria are prevented from being massively propagated in the water molecule activation filter element 4;

as shown in fig. 1 and 2, in order to simplify the structure of the water molecule activation filter element 4 and improve the reliability of the water molecule activation filter element 4, the water molecule activation filter element 4 includes a first housing 4-3, a first activation cavity and a second activation cavity are sequentially arranged in the first housing 4-3 along the water flow direction, the negative potential ball 4-1 is filled in the first activation cavity, the antibacterial ball 4-2 is filled in the second activation cavity, a filter screen 4-4 is fixedly arranged between the water inlet of the water molecule activation filter element 4 and the first activation cavity, between the water outlet of the water molecule activation filter element 4 and the second activation cavity, and between the first activation cavity and the second activation cavity, the water flow sequentially flows through the negative potential ball 4-1 and the antibacterial ball 4-2, because the grain size of the antibacterial ball 4-2 is larger than the grain size of the negative potential ball 4-1, the antibacterial ball 4-2 is filled in the second activation cavity close to the water outlet of the water molecule activation filter element 4, so that the filler of the water molecule activation filter element 4 can be effectively prevented from being washed by water flow and leaking;

as shown in fig. 1, 3 and 4, in order to effectively prevent bacteria in the air from entering the water ionizer from the water purifying tap 13 to cause secondary pollution, an antibacterial filter device 21 is disposed at the water outlet of the water purifying tap 13, the filler of the antibacterial filter device 21 includes antibacterial fibers 21-1, and the antibacterial fibers 21-1 of the present embodiment may also be made of other antibacterial materials; in order to make the structure of the antibacterial filtering device 21 simple and reliable and facilitate installation, the antibacterial filtering device 21 comprises a second shell 21-2, the second shell 21-2 is fixedly connected with the purified water tap 13 by screw threads, a sealing ring 21-3 is arranged between the second shell 21-2 and the purified water tap 13, a first accommodating cavity 21-2-1 communicated with the purified water tap 13 is arranged in the second shell 21-2, a second accommodating cavity 21-2-2 is fixedly arranged in the first accommodating cavity 21-2-1, the antibacterial fiber 21-1 is filled in the second accommodating cavity 21-2-2, an upper cover 21-2-5 is detachably arranged on the second shell 21-2 at a position corresponding to the second accommodating cavity 21-2-2 for facilitating assembly, a sealing ring 21-3 is also arranged between the upper cover 21-2-5 and the shell, the top end of the second accommodating cavity 21-2-2 is provided with a clean water inlet 21-2-3 communicated with the first accommodating cavity 21-2-1 and the second accommodating cavity 21-2-2, and the bottom end of the shell is provided with a clean water outlet 21-2-4 communicated with the bottom end of the second accommodating cavity 21-2-2; the raw water pipeline 16, the water purifying pipeline 17, the first shell 4-3 and the second shell 21-2 are made of antibacterial materials.

As shown in fig. 1, the pre-filter device comprises a water inlet electromagnetic valve 8, a PP filter element 1, a booster pump 9, a reverse osmosis membrane filter element 2, a high-voltage switch 10 and an active carbon filter element 3 which are sequentially arranged on a raw water pipeline 16, water passing through an RO reverse osmosis membrane of the reverse osmosis membrane filter element 2 does not contain any mineral substance, tastes astringent and is non-conductive, and a purified water outlet of the active carbon filter element 3 is communicated with a water inlet of a water molecule activation filter element 4; the wastewater outlet of the reverse osmosis membrane filter element 2 is communicated with a wastewater pipe 20 through a first blowdown pipeline 18, a wastewater electromagnetic valve 11 is arranged on the first blowdown pipeline 18, the wastewater outlet of the PP filter element 1 is communicated with the wastewater pipe 20 through a second blowdown pipeline 19, and a check valve 12 is arranged on the second blowdown pipe; in order to reduce the water pressure entering the raw water pipeline 16, the water inlet of the raw water pipeline 16 is communicated with a tap water inlet pipe through a three-way ball valve 6, and a pressure reducing valve 7 is arranged on the raw water pipeline 16 between the three-way ball valve 6 and the water inlet electromagnetic valve 8; in order to facilitate the monitoring of the water quality in the raw water pipeline 16, a first water quality probe 14 is arranged on the raw water pipeline 16 between the PP filter element 1 and the booster pump 9, a second water quality probe 15 is arranged on the raw water pipeline 16 between the reverse osmosis membrane filter element 2 and the activated carbon filter element 3, and the TDS probe can be selected as the first water quality probe 14 and the second water quality probe 15.

The working principle is as follows:

firstly, municipal tap water is decompressed by a decompression valve 7 and then enters a raw water pipeline 16, then sequentially flows through a water inlet electromagnetic valve 8, a PP filter element 1, a first water quality probe 14, a booster pump 9, a reverse osmosis membrane filter element 2, a second water quality probe 15, a high-voltage switch 10, an activated carbon filter element 3, a water molecule activation filter element 4 and an electrolytic sterilization module 5, and then flows into a purified water pipeline 17 after being filtered, and then flows out from a purified water outlet 21-2-4 of an antibacterial filter device 21 through a purified water faucet 13;

the water purification process comprises the following steps: the PP filter element 1 can filter most impurities such as suspended matters, particles, scrap iron and the like in water, and the filtered impurities are discharged into a waste water pipe 20 through a second sewage discharge pipeline 19 where the check valve 12 is located; the booster pump 9 applies pressure to the water body to enable the water to pass through the reverse osmosis membrane filter element 2, the reverse osmosis membrane filter element 2 can filter out inorganic salt, heavy metal ions, organic matters, bacteria, colloid, viruses and other impurities in the water, and the filtered impurities are discharged into the waste water pipe 20 through the first waste water pipeline 18 where the waste water electromagnetic valve 11 is located; the active carbon filter element 3 effectively removes organic matters, residual chlorine and other radioactive substances in the water; the negative potential ball 4-1 of the water molecule activation filter element 4 can instantly puncture water molecules to change the originally non-conductive purified water into conductive ionized water so as to achieve the purpose of activating small molecular water, and then the small molecular water is electrolyzed by the electrolysis sterilization module 5, so that the electrolysis reaction efficiency is greatly improved, and the electrolysis sterilization effect is improved; meanwhile, the negative potential ball 4-1 can instantly break down water molecules to generate components such as hydroxide radicals, hydrogen ions and the like, the PH can be raised to about 7.3-8.3, the outlet water is alkalescent, and even if electrolysis is continuously carried out, bacteria can not generate drug resistance, so that the water outlet of the water ionizer is sanitary and sterile, and the taste is fresh and cool; the antibacterial balls 4-2 of the water molecule activation filter element 4 are loaded with nano silver on the basis of the mineralized balls, so that the effective antibacterial and bacteriostatic effects are achieved, and the mass propagation of bacteria in the water molecule activation filter element 4 is prevented; the antibacterial fiber 21-1 of the antibacterial filter element device effectively isolates bacteria in the air from entering the water ionizer, and secondary pollution caused by mass propagation on the inner wall of the pipeline is avoided.

Example 2

As shown in fig. 5 and 6, in this embodiment, the difference from embodiment 1 is that the second housing 21-2 is fixedly connected to the water purifying tap 13 through a connecting member 22, the connecting member 22 includes a female sleeve 22-1, a sealing sleeve 22-2 and a sub-sleeve 22-3, one end of the sub-sleeve 22-3 is a tightening portion 22-3-1, the middle portion thereof is a radially extending limiting portion 22-3-2, the other end thereof is a connecting portion 22-3-3, the tightening portion 22-3-1 is provided with a gap 22-3-4, one end of the tightening portion 22-3-1 away from the limiting portion 22-3-2 is tapered, the female sleeve 22-1, the sealing sleeve 22-2 and the tightening portion 22-3-1 are all sleeved on the water purifying tap 13, the tightening part 22-3-1, the sealing sleeve 22-2 and the female sleeve 22-1 are sequentially arranged from inside to outside, the tightening part 22-3-1 is in threaded connection with the female sleeve 22-1, and the connecting part 22-3-3 is in threaded connection with the second shell 21-2; the material of the sealing sleeve 22-2 is silica gel so as to achieve good water leakage prevention effect; the arrangement of the connecting piece 22 enables the antibacterial filtering device 21 to be matched and connected with water purifying faucets 13 with different models and sizes, so that the application range is enlarged, the cost is saved, and the installation is simple and convenient.

Claims

1. A household water ionizer is characterized in that: the device comprises a preposed filtering device, a water molecule activating filter element (4) and an electrolytic sterilization module (5) which are sequentially arranged on a raw water pipeline (16), wherein a water outlet of the electrolytic sterilization module (5) is communicated to a water purifying faucet (13) through a water purifying pipeline (17), and an antibacterial filtering device (21) is arranged at a water outlet of the water purifying faucet (13); the filler of the water molecule activation filter element (4) comprises a negative potential ball (4-1); the filler of the antibacterial filter device (21) comprises antibacterial fibers (21-1).

2. A domestic water ionizer according to claim 1, wherein: the filler of the water molecule activation filter element (4) also comprises an antibacterial ball (4-2).

3. A domestic water ionizer according to claim 2, wherein: the water molecule activation filter element (4) comprises a first shell (4-3), a first activation cavity and a second activation cavity are sequentially arranged in the first shell (4-3) along the water flow direction, the negative potential ball (4-1) is filled in the first activation cavity, the antibacterial ball (4-2) is filled in the second activation cavity, and a filter screen (4-4) is fixedly arranged between a water inlet of the water molecule activation filter element (4) and the first activation cavity, between a water outlet of the water molecule activation filter element (4) and the second activation cavity, and between the first activation cavity and the second activation cavity.

4. A domestic water ionizer according to claim 1, 2 or 3, wherein: the antibacterial filtering device (21) comprises a second shell (21-2), a first accommodating cavity (21-2-1) communicated with the water purifying faucet (13) is formed in the second shell (21-2), a second accommodating cavity (21-2-2) is fixedly arranged in the first accommodating cavity (21-2-1), the antibacterial fiber (21-1) is filled in the second accommodating cavity (21-2-2), the top end of the second accommodating cavity (21-2-2) is provided with a net water inlet (21-2-3) which is communicated with the first accommodating cavity (21-2-1) and the second accommodating cavity (21-2-2), the bottom end of the shell is provided with a clean water outlet (21-2-4) communicated with the bottom end of the second accommodating cavity (21-2-2).

5. A domestic water ionizer according to claim 4, wherein: the second shell (21-2) is fixedly connected with the water purifying faucet (13) through threads.

6. A domestic water ionizer according to claim 4, wherein: the second shell (21-2) is fixedly connected with the water purifying tap (13) through a connecting piece (22), the connecting piece (22) comprises a female sleeve (22-1), a sealing sleeve (22-2) and a sub-sleeve (22-3), one end of the sub-sleeve (22-3-1) is a tightening part (22-3-1), the middle part of the sub-sleeve is a radially extending limiting part (22-3-2), the other end of the sub-sleeve is a connecting part (22-3-3), a spacing groove (22-3-4) is formed in the tightening part (22-3-1), one end, far away from the limiting part (22-3-2), of the tightening part (22-3-1) is conical, and the female sleeve (22-1), the sealing sleeve (22-2) and the tightening part (22-3-1) are all sleeved on the water purifying tap (13), the tightening part (22-3-1), the sealing sleeve (22-2) and the female sleeve (22-1) are sequentially arranged from inside to outside, the tightening part (22-3-1) is in threaded connection with the female sleeve (22-1), and the connecting part (22-3-3) is in threaded connection with the second shell (21-2).

7. A domestic water ionizer according to claim 1, wherein: the pre-filter device comprises a water inlet electromagnetic valve (8), a PP filter element (1), a booster pump (9), a reverse osmosis membrane filter element (2), a high-voltage switch (10) and an active carbon filter element (3) which are sequentially arranged on a raw water pipeline (16), and a purified water outlet of the active carbon filter element (3) is communicated with a water inlet of the water molecule activation filter element (4); the waste water outlet of the reverse osmosis membrane filter element (2) is communicated with a waste water pipe (20) through a first sewage discharge pipeline (18), a waste water electromagnetic valve (11) is arranged on the first sewage discharge pipeline (18), the waste water outlet of the PP filter element (1) is communicated with the waste water pipe (20) through a second sewage discharge pipeline (19), and a check valve (12) is arranged on the second sewage discharge pipeline.

8. The home water ionizer of claim 7, wherein: the water inlet of the raw water pipeline (16) is communicated with a tap water inlet pipe through a three-way ball valve (6), and a pressure reducing valve (7) is arranged on the raw water pipeline (16) between the three-way ball valve (6) and the water inlet electromagnetic valve (8).

9. The home water ionizer of claim 8, wherein: a first water quality probe (14) is arranged on a raw water pipeline (16) between the PP filter element (1) and the booster pump (9), and a second water quality probe (15) is arranged on the raw water pipeline (16) between the reverse osmosis membrane filter element (2) and the activated carbon filter element (3).