CN107352687B

CN107352687B - Water purification quality guaranteeing system

Info

Publication number: CN107352687B
Application number: CN201710638131.6A
Authority: CN
Inventors: 何应斌
Original assignee: Hunan Changxiang Industrial Co ltd
Current assignee: Hunan Changxiang Industrial Co ltd
Priority date: 2017-07-31
Filing date: 2017-07-31
Publication date: 2023-04-18
Anticipated expiration: 2037-07-31
Also published as: CN107352687A

Abstract

The invention discloses a water purification quality guarantee system, which comprises a raw water supply unit, a raw water purification unit, a water-air mixer, a booster pump, a water purification tower, a first ozone generator and an air pump, wherein the water purification tower comprises a water purification tower body, an siphon port is formed in the water purification tower body, the raw water supply unit is connected with the water inlet end of the water-air mixer through the raw water purification unit, the air pump is connected with the air inlet end of the first ozone generator, the output end of the first ozone generator is connected with the air inlet end of the water-air mixer, the water outlet end of the water-air mixer is connected with the water inlet of the water purification tower through the booster pump, and the water purification quality guarantee system also comprises a first three-way joint, a second three-way joint, a reflux electromagnetic valve and at least one direct drinking water extension set; the direct drinking water extension is connected in series between the third end of the second three-way joint and the water inlet end of the water-gas mixer. The invention does not need to be cleaned, the water in the water purification tower and the pipeline can be completely circulated, the purified water is not easy to age and pollute, the quality of the purified water is high, the use and maintenance cost is low, and the health of human bodies is ensured.

Description

Water purification quality guaranteeing system

Technical Field

The invention particularly relates to a water purification quality guaranteeing system.

Background

The existing water purification system comprises a raw water supply unit, a raw water purification unit, a water-air mixer, a booster pump, a water purification tower, a direct drinking water extension, an ozone generator and an air pump, wherein a hot liner and a faucet assembly are arranged in the direct drinking water extension, the faucet assembly comprises a cold water faucet and a hot water faucet, the water purification tower comprises a water purification tower body, a water inlet and a water outlet are arranged on the water purification tower body, and the water inlet of the water purification tower is communicated with the water outlet of the booster pump. The raw water supply unit is communicated with the water inlet end of the water-gas mixer through the raw water purification unit, the air pump is communicated with the air inlet end of the ozone generator, the output end of the ozone generator is communicated with the air inlet end of the water-gas mixer, and the water outlet end of the water-gas mixer is communicated with the water inlet of the booster pump.

The raw water supply unit provides raw water which does not accord with the drinking water standard, and the raw water is purified by the raw water purification unit, mixed with ozone by the water-gas mixer and then output ozone water to the water purification tower. Water stored in the water purifying tower enters a water tank in the direct drinking water extension through a pipeline, and water in the water tank enters the hot liner for heating and provides hot water through the hot water faucet. The water in the water tank is provided with normal temperature water through a cold water faucet.

Existing water purification systems have the following disadvantages:

firstly, in order to adjust the internal and external air pressure balance of the water purification tower body, a siphon inlet is arranged at the top of the water purification tower body. In the prior art, the siphon port is directly communicated with the outside, so that bacteria, viruses, impurities and the like in the outside air easily enter the water purification tower body through the siphon port, purified water stored in the water purification tower body is polluted, and the human health is harmed. Meanwhile, because the water purification tower body is easily polluted, the water purification tower body needs to be cleaned and disinfected regularly, the use and maintenance cost is increased, and disinfectant residues can be generated, so that the human health is further harmed.

Second, the water intaking terminal directly drinks the water extension and adopts the water tank mode of supplying water, and the water tank mode of supplying water has following shortcoming:

1. the water stored in the water tank can not be recycled to a direct drinking water supply and delivery pipe network for circulation and returns to the host for reactivation and disinfection, and the water is stored in the water tank for a long time and can be aged or aged to influence the water quality.

2. Because the water tank business turn over water must adopt the siphon principle, therefore take water every time and all have the air admission water tank of the installation environment of corresponding volume to lead to dust, microorganism spore, pathogenic bacteria etc. in the installation environment air to get into the water tank and sneak into aquatic, can cause the secondary pollution of straight drinking water.

3. The water tank and the water passing part are polluted after a long time, the water tank and the water passing part need to be regularly cleaned, a large amount of manpower and cleaning disinfectant need to be consumed, and the sterilizing disinfectant is remained on the water tank and the water passing part during cleaning, so that the water quality is polluted and the water passing part is harmful to health.

4. Because the water tank supplies water, the water taking end of the direct drinking water extension machine takes water by utilizing the atmospheric natural pressure siphon principle, and the water yield is low.

Thirdly, the water faucet assembly comprises a water outlet nozzle which is cylindrical, one half of the water outlet of the cold water faucet and one half of the water outlet of the hot water faucet are communicated with the outside through the water outlet nozzle, and finally the cold water and the hot water flow out through the water outlet nozzle. Because the faucet pipe diameter is great, the water outlet of cold water tap and hot water tap's the actual use only has half of self delivery port area, therefore the discharge of water from cold water tap and hot water tap is less, and the velocity of flow is slow, and water pressure is little, can not reach the effect of washing away the faucet inner wall, therefore can't wash away the bacterium on the faucet inner wall, cause the pollution of drinking water. Meanwhile, the water outlet nozzle is connected with the faucet assembly in an integrated manner, so that the faucet assembly is inconvenient to clean.

Fourthly, the water-gas mixer is easy to be corroded by ozone and return water, so that the ozone generator does not generate ozone when meeting water and corrode the ozone generator, the function of sterilizing and disinfecting water by utilizing ozone is lost, the working reliability is low, the human health is harmed, the use and maintenance cost is increased, and the working reliability is low.

In a word, in the existing water purification system, purified water cannot be circulated, is easy to be secondarily polluted, cannot supplement oxygen according to needs, and is low in quality.

Disclosure of Invention

The invention aims to provide a non-cleaning full-circulation water purification quality-guaranteeing system which is not easy to age and pollute water and is free of cleaning aiming at the defects of the prior art, oxygen can be added to purified water according to requirements, harmful substances in the raw water are removed, beneficial substances in the raw water are reserved, a sterilization and disinfection device is arranged in a purified water supply link to sterilize and disinfect the water, the total number of bacterial colonies is zero, the purified water quality is high, the use and maintenance cost is low, and the health of a human body is guaranteed.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a water purification quality guaranteeing system comprises a raw water supply unit, a raw water purification unit, a water-air mixer, a booster pump, a water purification tower, a water tap assembly, a first ozone generator and an air pump, wherein the water tap assembly comprises a cold water tap, the water purification tower comprises a water purification tower body, an siphon inlet is formed in the top of the water purification tower body, the raw water supply unit is communicated with the water inlet end of the water-air mixer through the raw water purification unit, the air pump is communicated with the air inlet end of the first ozone generator, the output end of the first ozone generator is communicated with the air inlet end of the water-air mixer, the water outlet end of the water-air mixer is communicated with the water inlet of the water purification tower through the booster pump, the water purification quality guaranteeing system is structurally characterized by further comprising a first three-way joint, a second three-way joint, a backflow electromagnetic valve and at least one direct drinking water branch machine, the first end of the second three-way joint is communicated with the water outlet of the water purification tower, the second end of the second three-way joint is communicated with a water leading and draining electromagnetic valve, and the direct drinking water branch machine is connected between the third end of the second three-way joint and the water-air mixer in series; the first end of the first three-way joint is communicated with the siphon port, the second end of the first three-way joint is communicated with the first air filter, and the third end of the first three-way joint is communicated with the output end of the second ozone generator.

Borrow by above-mentioned structure, the water in water purification tower and the water supply pipeline can be through the whole circulations of third end of second three way connection back flow to water gas mixer end of intaking, mixes ozone disinfection of disinfecting in water gas mixer to carry out circulation activation regeneration, oxygenation to quality of water and disinfect, quality of water is difficult for ageing and difficult contaminated, need not to wash, and the water purification quality is high, uses and the maintenance cost is low, ensures human health. The water discharge electromagnetic valve is used as an automatic water discharge electromagnetic valve for guaranteeing the quality of a long-term unused water machine and is used for regularly discharging the unused purified water in the water purification tower body, so that the situations of aging water and deterioration of water purification consumable materials caused by long-term unused water or little used water are prevented.

Because the siphon mouth even has first air cleaner and second ozone generator, therefore at first can filter the air that gets into the siphon mouth through first air cleaner, then the ozone that produces through second ozone generator disinfects the disinfection to the air that gets into in the water purification tower through the siphon mouth, thereby guarantee the bacterium, virus or impurity etc. can not pollute this internal water purification of water purification tower or water purification tower body itself through the siphon mouth, guarantee this internal quality of water purification tower, need not to carry out cleaning and disinfecting to the water purification tower body, use and maintenance cost has been reduced, the remaining problem of disinfectant also can not exist simultaneously, ensure human health.

Furthermore, a variable frequency pump is connected between the third end of the second tee joint and the direct drinking water extension set.

Further, the ozone concentration regulating valve is connected between the raw water purification unit and the water inlet end of the water-gas mixer.

Further, a raw water detection device is connected between the raw water supply unit and the raw water purification unit.

Furthermore, a raw water valve is connected between the raw water supply unit and the raw water detection device.

Furthermore, at least one ultraviolet lamp tube positioned above the full water level of the water purification tower body is arranged in the water purification tower body.

Utilize ultraviolet tube to disinfect the air of full water level top, form protection protective screen one to this internal water of water purification tower, stop bacterial growing and breed from the source, can guarantee that the water purification is not polluted, guarantee that the water purification is aseptic all the time. Compared with the situation that only one ultraviolet lamp tube is arranged, the working reliability of the plurality of ultraviolet lamp tubes is higher, and under the condition that one ultraviolet lamp tube fails, other ultraviolet lamp light can still work normally.

Furthermore, one end of each ultraviolet lamp tube is provided with a photosensitive sensor, the output end of the photosensitive sensor is electrically connected with the controller, and the output end of the controller is electrically connected with the early warning unit.

The photosensitive sensor can sense whether the corresponding ultraviolet lamp tubes work normally or not and feed back to the controller, and if one ultraviolet lamp tube fails, the controller controls the early warning unit to give an alarm.

Furthermore, the water-gas mixer comprises a first electromagnetic valve, a fourth three-way joint and an air inlet pipeline, wherein the first end of the fourth three-way joint is an air inlet end, the second end of the fourth three-way joint is an water inlet end, and the third end of the fourth three-way joint is an water outlet end; the first electromagnetic valve comprises a valve seat, a coil assembly, a valve core assembly and a return spring, wherein the valve seat is connected with the coil assembly, an air passing cavity is arranged in the valve seat and is communicated with the output end of the first ozone generator 1904 through an air inlet, the coil assembly is provided with an air inlet channel which can be communicated with an air inlet pipeline of the water-air mixer, the valve core assembly comprises an electromagnetic rod arranged in the air inlet channel, the return spring is arranged in the air inlet channel, one end of the return spring is connected with one end of the electromagnetic rod, the other end of the electromagnetic rod is provided with a plug which can open or close the air inlet, a ceramic chip sealed with the air inlet is further arranged in the air passing cavity, a through hole which is communicated with the air passing cavity and the air water gate which is fixed with one end of the electromagnetic rod and is opposite to the through hole is formed in the ceramic chip.

By means of the structure, the electromagnetic valve is matched with the air-water gate through the ceramic sheet to seal the air passing hole, the ceramic sheet cannot be corroded by ozone, the sealing performance is good, water cannot be returned, the situation that the ozone generator does not generate ozone when meeting water is avoided, the ozone generator is prevented from being corroded, the use and maintenance cost is low, the working reliability is high, and toxic and harmful substances cannot be generated.

Further, the valve core assembly further comprises a sealing sleeve wrapping the electromagnetic rod.

The electromagnetic valve is coated by the sealing sleeve, so that the electromagnetic rod can be prevented from being corroded by ozone to generate substances harmful to human bodies.

Preferably, the first end and the second end of the second three-way joint are straight ends, and the third end of the second three-way joint is a bypass end with a downward opening.

The water tap assembly further comprises a hot water tap, a first end of the third three-way joint is communicated with a water outlet of the water purification tower, a second end of the third three-way joint is communicated with a water inlet of the hot water tap, a third end of the third three-way joint is communicated with a first end of the second three-way joint, and a water outlet of the hot water tap is communicated with a water inlet of the hot water tap.

And the water outlet of the water purification tower is communicated with the water inlet of the reflux electromagnetic valve through the water pump.

Preferably, the water pump is connected between the third end of the third three-way joint and the first end of the second three-way joint, or the water pump is connected between the third end of the second three-way joint and the backflow solenoid valve.

Furthermore, the faucet assembly further comprises a funnel-shaped water outlet nozzle, a closed cavity is defined between the upper portion of the funnel-shaped water outlet nozzle and the cold water faucet and between the upper portion of the funnel-shaped water outlet nozzle and the hot water faucet, water outlets of the cold water faucet and the hot water faucet are communicated with the cavity, and the cavity is communicated with the outside through a water outlet through pipe at the lower portion of the funnel-shaped water outlet nozzle.

All bores of the cold water faucet water outlet are located in the cavity, all bores of the hot water faucet water outlet are located in the cavity, so that the water flow of the cold water faucet and the hot water faucet is large, the flow speed is high, the water pressure is high, the cold water and the hot water form vortex, and the cold water and the hot water are washed alternately, so that the inner wall of the water outlet nozzle can be washed, bacteria on the inner wall of the water outlet nozzle can be washed away, meanwhile, the hot water can also carry out high-temperature disinfection on the inside of the water outlet nozzle, and the bacteria are prevented from growing and breeding.

As a preferred mode, the water-gas mixer comprises a first electromagnetic valve, a fourth three-way joint and a gas inlet pipeline, wherein a first end of the fourth three-way joint is a gas inlet end, a second end of the fourth three-way joint is a water inlet end, and a third end of the fourth three-way joint is a water outlet end; the first electromagnetic valve comprises a valve seat, a coil assembly, a valve core assembly and a return spring, wherein the valve seat is connected with the coil assembly, an air passing cavity is arranged in the valve seat and is communicated with the output end of the first ozone generator 1904 through an air inlet, the coil assembly is provided with an air inlet channel which can be communicated with an air inlet pipeline of the water-air mixer, the valve core assembly comprises an electromagnetic rod arranged in the air inlet channel, the return spring is arranged in the air inlet channel, one end of the return spring is connected with one end of the electromagnetic rod, the other end of the electromagnetic rod is provided with a plug which can open or close the air inlet, a ceramic chip sealed with the air inlet is further arranged in the air passing cavity, a through hole which is communicated with the air passing cavity and the air water gate which is fixed with one end of the electromagnetic rod and is opposite to the through hole is formed in the ceramic chip.

Preferably, the controller is an STC12C5404AD chip and a peripheral circuit thereof.

Compared with the prior art, the invention does not need cleaning, the water in the water purification tower and the pipeline can be completely circulated, the purified water is not easy to age and pollute, the purified water can be oxygenated according to the requirement, the harmful substances in the raw water are removed, the beneficial substances in the raw water are kept, the purified water supply link is provided with the sterilization and disinfection device to sterilize and disinfect the water, the total number of bacterial colonies is zero, the quality of the purified water is high, the use and maintenance cost is low, and the health of human bodies is ensured.

Drawings

Fig. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a schematic diagram of the water purification tower.

Fig. 3 is a schematic structural diagram of a water purification tower body.

Fig. 4 is a schematic structural diagram of the sanding head in fig. 2.

Fig. 5 is a schematic structural view of the product shown in fig. 4 in a separated state.

Fig. 6 is a schematic view showing the structure of the float of fig. 2.

Fig. 7 is a schematic structural view of the product shown in fig. 6 in a separated state.

Fig. 8 is a schematic diagram of a circuit connection structure of the water purification tower.

Fig. 9 is a schematic diagram of a circuit structure of the water level detector.

Fig. 10 is an external view of the water-gas mixer.

Fig. 11 is a cross-sectional view of the lower embodiment of fig. 10.

Fig. 12 is an exploded view of the left portion of fig. 11.

Figure 13 is a cross-sectional view of the lower portion of figure 10 in accordance with another embodiment.

Fig. 14 is an exploded view of the left portion of fig. 13.

Fig. 15 is a schematic circuit diagram of the water-gas mixer.

FIG. 16 is a schematic view of a quick coupling for hard tubing.

Fig. 17 is a schematic view of the product of fig. 16 with the components separated.

Fig. 18 is an appearance schematic diagram of an embodiment of a direct drinking water dispenser.

Fig. 19 is a schematic structural view of fig. 18 with the front panel removed.

Fig. 20 is a schematic view of the product of fig. 19 with the components separated.

FIG. 21 is a schematic view of the construction of the faucet assembly of FIG. 19.

FIG. 22 is an external view of the faucet assembly of FIG. 21.

FIG. 23 is a schematic structural view of the heat bladder assembly of FIG. 19.

Fig. 24 is a schematic circuit structure diagram of a first embodiment of the direct drinking water extension machine.

Fig. 25 is an overall work flow diagram of the direct drinking water extension machine.

Fig. 26 is a schematic structural view of a second embodiment of the faucet assembly.

Fig. 27 is a schematic circuit structure diagram of a second embodiment of the direct drinking water dispenser.

Fig. 28 is a schematic structural view of another embodiment of the raw water purification unit.

Wherein, 9 is a water tap assembly, 901 is a cold water tap, 9011 is a cold water control handle, 902 is a hot water tap, 9021 is a hot water control handle, 1617 is a second three-way joint, 904 is a first normally open reed pipe, 905 is a first magnet, 906 is a water inlet solenoid valve driving circuit, 907 is a water inlet solenoid valve, 908 is a second normally open reed pipe, 909 is a second magnet, 910 is a first self-reset travel switch, 911 is a second self-reset travel switch, 912 is a water outlet nozzle, 9121 is a cavity, 9122 is a water outlet through pipe, 10 is a controller, 11 is a hot liner assembly, 1101 is a hot liner, 1102 is an air bag, 1103 is a hard pipe, 1104 is a water level detector, 11041 is a water inlet electrode, 11042 is a full water electrode, 11043 is a common electrode, 1105 is a temperature sensor, 1106 is a heating element, 1107 is an A/D converter, 1108 is a heating element driving circuit, 1109 is a first shunt resistor, 1110 is a one-way second shunt resistor, 1111 is a piezoelectric valve, 1201 is a first three-way joint, 1202 is a master valve, 1203 is a waste water box, 1204 is a housing of the extension, 1205 is a front panel, 1206 is a water leakage protection plate, 1207 is a water leakage protection induction circuit, 13 is a sand head, 1301 is an air inlet nozzle, 1302 is a sand cylinder, 1303 is a first connecting cylinder, 13031 is a first limiting part, 13032 is a first friction part, 1304 is a second connecting cylinder, 13041 is a second limiting part, 13042 is an air vent, 1305 is a convex rib, 1306 is a gap, 14 is a floater, 1401 is an annular magnet, 1402 is a base, 14021 is an annular groove, 1403 is a top cover, 14031 is a second friction part, 1404 is a sealing ring, 14041 is an annular protrusion, 14042 is a flange edge, 14043 is a positioning rod, 1405 is a first normally closed type dry reed pipe, 1406 is a second normally closed type dry reed pipe, 1407 is a water inlet driving circuit, 1408 is a water inlet electromagnetic valve, 1409 is a detection rod, 16 is a water tower body, 1601 is a clean water tower body, 16011 is siphon, 1602 is first three-way joint, 1603 is first air filter, 1604 is second ozone generator, 1605 is second air filter, 1606 is water outlet pipe, 1607 is ultraviolet lamp tube, 1608 is photosensitive sensor, 1609 is early warning unit, 1610 is air pipe, 1611 is third ozone generator, 1612 is first stainless steel baffle, 1613 is third air filter, 1614 is second stainless steel baffle, 1615 is water inlet pipe, 1616 is water outlet solenoid valve, 1617 is three-way joint, 17 is water-air mixer, 8 is hard pipe quick-connect joint, 801 is circular ring, 8011 is first circular arc part, 8012 is second circular arc part, 80121 is convex rib part, 802 is first hard pipe, 8021 is threaded head, 803 is connecting sleeve, 8031 is stop, 8032 is convex rib, 804 is second hard pipe, 8041 is flange, 805 is second sealing ring, 1700 is first solenoid valve, 1701 is valve seat, 17011 is air valve seat, 17012 is 17012, 1702 is a coil component, 17021 is an air inlet channel, 1703 is an electromagnetic rod, 1704 is a return spring, 1705 is an air inlet pipeline, 1707 is a ceramic chip, 17071 is a through hole, 1708 is an air-water gate, 1709 is a sealing sleeve, 1710 is a connecting piece, 1711 is a fourth three-way joint, 1712 is an air inlet branch pipe, 1713 is an air inlet main pipe, 1714 is a first electromagnetic valve driving circuit, 1715 is a sand head, 1716 is a common electrode, 1717 is a first electrode, 1718 is a second electrode, 1719 is a first voltage dividing resistor, 1720 is a second voltage dividing resistor, 1721 is a nut, 1722 is a rubber seal, 1723 is a rubber seal, 1724 is a rubber seal, 1725 is a seal rubber seal, 1726 is an ozone conveying pipeline, 1609 is an early warning unit, 1900 is a direct drinking water extension, 1901 is a raw water supply unit, 1902 is a raw water purification unit, 19021 is a quartz crystal assembly, 19022 is a full-automatic regeneration resin activated carbon component, 19023 is a first purified water component, 19024 is raw water electromagnetic valve, 19025 is PP cotton resin water purification assembly, 19026 is PP cotton activated carbon water purification assembly, 19027 is vacuum fiber ultrafiltration membrane water purification assembly, 19028 is second activated carbon water purification assembly, 19029 is first stage PP cotton water purification assembly, 19020 is second stage PP cotton water purification assembly, 1903 is booster pump, 1904 is first ozone generator, 1905 is air pump, 1906 is water pump, 1907 is reflux electromagnetic valve, 1908 is third three-way joint, 1909 is air drying and filtering assembly, 1910 is fifth three-way joint, 1911 is raw water valve, 1913 is variable frequency pump, 1914 is water purifying water tap, 1915 is water purifying water using device, 1616 is ozone concentration regulating valve, 1917 is raw water detecting device, 1918 is raw water booster pump, 1919 is high pressure booster pump, 1920 is nanofiltration membrane water purification assembly, 1921 is RO membrane water purification assembly, 1922 is raw water concentration three-way.

Detailed Description

As shown in fig. 1 to 27, the water purification quality guaranteeing system includes a raw water supply unit 1901, a raw water purification unit 1902, a water-air mixer 17, a booster pump 1903, a water purification tower 16, a first ozone generator 1904 and an air pump 1905, wherein the water purification tower 16 includes a water purification tower body 1601, an siphon port 16011 is opened at the top of the water purification tower body 1601, the raw water supply unit 1901 is communicated with a water inlet end of the water-air mixer 17 through the raw water purification unit 1902, the air pump 1905 is communicated with a water inlet end of the first ozone generator 1904, an output end of the first ozone generator 1904 is communicated with the water inlet end of the water-air mixer 17, a water outlet end of the water-air mixer 17 is communicated with a water inlet of the water purification tower 16 through the booster pump 1903, the water purification quality guaranteeing system further includes a first three-way joint 1602, a second three-way joint 1617, a reflux electromagnetic valve 1907 and at least one direct drinking water branch machine 1900, a first end of the second three-way joint 1617 is communicated with a water drinking water pipe 1616, and a water drinking branch machine 1617 is connected in series between the water drinking branch machine 1617 and the direct drinking water mixing machine 17; a first end of the first three-way joint 1602 communicates with the siphon port 16011, a second end of the first three-way joint 1602 communicates with the first air filter 1603, and a third end of the first three-way joint 1602 communicates with an output end of the second ozone generator 1604.

The raw water purification unit 1902 comprises a raw water booster pump 1918, a quartz sand water purification component 19021, a first-stage PP cotton water purification component 19029, a full-automatic regeneration resin water purification component 19022, an activated carbon water purification component 19023, a second-stage PP cotton water purification component 19020, a vacuum fiber ultrafiltration membrane water purification component 19027 and the like which are sequentially communicated, and one or more water purification module components permitted by health administration can be additionally connected according to the quality of raw water and the requirements of users. A raw water solenoid valve 19024 is connected between the raw water booster pump 1918 and the raw water detection device 1917.

A raw water valve 1911 is provided between the raw water supply unit 1901 and the raw water purification unit 1902.

The reflux solenoid valve 1907, the water-air mixer 17 and the raw water purification unit 1902 are communicated with each other through a fifth three-way joint 1910.

The first air filter 1603 is a ceramic filter with a filter pore size of less than 0.15 microns.

An air drying and filtering assembly 1909 is connected between the air pump 1905 and the air inlet of the first ozone generator 1904.

The air inlet of the second ozone generator 1604 communicates with the atmosphere through a second air filter 1605.

A variable frequency pump 1913 is connected between the third end of the second three-way joint 1617 and the direct drinking water extension 1900.

The present invention further includes an ozone concentration adjusting valve 1616 connected between the raw water purifying unit 1902 and the water inlet end of the water-gas mixer 17. A raw water detection device 1917 is connected between the raw water supply unit 1901 and the raw water purification unit 1902. A raw water valve 1911 is connected between the raw water supply unit 1901 and the raw water detection device 1917.

The bottom of the water purification tower body 1601 is connected with a water outlet pipe 1606.

In prior art, because siphon mouth 16011 can pollute water purification tower body 1601, therefore water purification tower body 1601 bottom amasss and has the pollutant, and outlet pipe 1606 can not open in water purification tower body 1601 bottom to lead to the water below the outlet pipe 1606 position to be old water, be favorable to bacterial growing and breed. And in this application, because there is not siphon mouth 16011 to pollute water purification tower body 1601 problem, therefore can open outlet pipe 1606 in the bottommost of water purification tower body 1601, from bottom play water, prevent to appear old water in the water purification tower body 1601, be unfavorable for bacterial growing and breed, further guarantee quality of water not contaminated.

The bottom end of the water outlet pipe 1606 is connected with a second three-way joint 1617. The first end of the second tee 1617 is in communication with the bottom end of the outlet tube 1606. The second end of the second tee 1617 is used to provide purified water via variable frequency pump 1913. The third end of the second three-way joint 1617 is used for communicating with a water guiding and discharging pipe through a water discharging solenoid valve 1616, and is used for discharging the purified water which is not used for a long time in the water purifying tower body 1601 at regular time, so that the condition that the aged water and the purified water consumption are deteriorated due to no water or little water is used for a long time is prevented.

At least one ultraviolet lamp 1607 is arranged in the water purification tower body 1601 and above the full water level of the water purification tower body 1601.

One end of each ultraviolet lamp 1607 is provided with a photosensor 1608, an output end of the photosensor 1608 is electrically connected with the controller 10, and an output end of the controller 10 is electrically connected with the early warning unit 1609.

Still be equipped with trachea 1610 in the water purification tower body 1601, the one end of trachea 1610 is linked together with the output of third ozone generator 1611, and the other end of trachea 1610 is even connected with sand head 13, sand head 13 is arranged in outlet pipe 1606. Ozone generated by the third ozone generator 1611 may be mixed into the purified water in the outlet pipe 1606 through the sanding head 13 as needed, thereby providing sterilizable and sterilizable ozone water.

The top and the bottom of trachea 1610 all are equipped with first stainless steel baffle 1612. The first stainless steel shield 1612 may shield ultraviolet radiation from the plastic at the top and bottom of the tube 1610.

The air inlet of the third ozone generator 1611 communicates with the atmosphere through a third air filter 1613.

A water level detector is also arranged in the water purification tower body 1601.

The sanding head 13 may be a prior art sanding head or a modified sanding head 13 as shown in fig. 4 and 5. As shown in fig. 4 and 5, the sanding head 13 includes an air inlet nozzle 1301, a cylindrical sanding cylinder 1302, a first connector cylinder 1303, and a second connector cylinder 1304; both ends of the sand cylinder 1302 are open, the bottom end of the first connecting cylinder 1303 is open, the top end of the second connecting cylinder 1304 is open, and the bottom end of the second connecting cylinder 1304 is sealed; the air inlet nozzle 1301 is arranged at the top end of the first connecting cylinder 1303, the bottom end of the first connecting cylinder 1303 is detachably connected with the top end of the second connecting cylinder 1304, one end of the sand cylinder 1302 is sleeved at the bottom end of the first connecting cylinder 1303, the other end of the sand cylinder 1302 is sleeved at the top end of the second connecting cylinder 1304, the middle section of the first connecting cylinder 1303 is provided with a first limiting portion 13031, the middle section of the second connecting cylinder 1304 is provided with a second limiting portion 13041, the sand cylinder 1302 is located between the first limiting portion 13031 and the second limiting portion 13041, and the side wall of the second connecting cylinder 1304 is provided with an air vent 13042 opposite to the side wall of the sand cylinder 1302.

By means of the structure, the sand head 13 is convenient to disassemble and is tightly connected. During operation, air enters from the air inlet nozzle 1301, sequentially passes through the inner cavity of the first connecting cylinder 1303 and the inner cavity of the second connecting cylinder 1304, enters the inner cavity of the sand cylinder 1302 from the vent holes 13042, and is uniformly sprayed out in a radial shape after passing through the porous side wall of the sand cylinder 1302, so that ozone provided by the third ozone generator 1611 can be uniformly mixed in purified water outside the sand cylinder 1302. When a certain part of the sand head 13 is damaged, the sand head can be independently replaced, and the use cost is low.

The first 13031 and the second 13041 limit parts have at least two ribs 1305 perpendicular to the central axis of the sand cylinder 1302, and a gap 1306 is arranged between the adjacent ribs 1305.

The convex ribs are radially distributed by taking the central axis of the sand cylinder 1302 as the center, the lengths of the convex ribs are equal, and the positioning effect is good.

The bottom end of the first connecting cylinder 1303 is screwed with the top end of the second connecting cylinder 1304.

The first cylinder 1303 has a first friction portion 13032 on the outer sidewall thereof for facilitating the tightening of the clamping force.

The output end of the third ozone generator 1611 is communicated with the air inlet nozzle 1301 through an air pipe 1610, the sanding head 13 is arranged in the water inlet end of the water outlet pipe 1606, and the outer end of the convex rib 1305 is abutted against the inner side wall of the water outlet pipe 1606. Because the first limit part 13031 and the second limit part 13041 are provided with the convex rib 1305, the outer end of the convex rib 1305 is abutted to the inner side wall of the water outlet pipe 1606, the sand head 13 can be limited, the sand head 13 is prevented from shaking to cause the air inlet nozzle 1301 to be separated from the air pipe 1610, and the working reliability is high. Because the gaps 1306 are arranged between the adjacent convex ribs 1305, the flowing of the clean water from the sand head 13 and the spraying of the ozone from the sand cylinder 1302 are not influenced.

The water level detector may be a water level detector of the prior art, or a water level detector modified as shown in fig. 6 and 7. As shown in fig. 6 and 7, the water level detector includes a detecting rod 1409 and a float 14 which is sleeved outside the detecting rod 1409 and is movable along the detecting rod 1409. The float 14 comprises an annular magnet 1401, a base 1402 with a first through hole 14022 in the middle, a top 1403 with a second through hole 14032 in the middle, an annular groove 14021 is formed in the side wall of the base 1402, the annular magnet 1401 is arranged in the annular groove 14021, the float further comprises a sealing ring 1404, the sealing ring 1404 comprises an annular protrusion 14041 clamped in the annular groove 14021, the top of the side wall of the annular protrusion 14041 is provided with a flange 14042 arranged between the inner top surface of the top 1403 and the top surface of the upper port of the base 1402, and the base is detachably connected with the top 1403. The detection rod 1409 of the water level detector passes through the first through hole 14022 and the first through hole 14032. The top and bottom ends of the detecting rod 1409 are both provided with a second stainless steel baffle 1614, which can isolate ultraviolet radiation and prevent the plastic products at the top and bottom ends of the detecting rod 1409 from aging.

By means of the structure, the float 14 is convenient to disassemble and assemble, when any one part of the float 14 is damaged, the part can be independently replaced, and the use and maintenance cost is low. The sealing ring 1404 is provided with an annular bulge 14041 and a flange edge 14042, and the sealing effect can be enhanced through axial and radial extrusion. The following performance of the floater 14 to the water level is good, and the detection sensitivity and accuracy are high.

The outer bottom surface of the annular protrusion 14041 is also connected with three positioning rods 14043 with equal length, the positioning rods 14043 are parallel to the central axis of the base 1402, and the bottom end of the positioning rods 14043 is abutted against the annular magnet 1401. The three positioning rods 14043 are evenly distributed along the circumference of the annular protrusion 14041. Since the positioning rod 14043 is provided, the ring magnet 1401 is not easily shaken in the process of ascending or descending, and the operational reliability is high.

The base 1402 is threadably engaged with the top 1403.

The top cover 1403 has a second friction portion 14031 on the outer side wall for tightening the force.

The detection rod 1409 is arranged in the purified water tower body 1601, a first normally closed reed pipe 1405 is arranged on the detection rod 1409 at a position corresponding to a water inlet level, a second normally closed reed pipe 1406 is arranged on the detection rod 1409 at a position corresponding to a full water level, one end of each of the first normally closed reed pipe 1405 and the second normally closed reed pipe 1406 is grounded, the other end of each of the first normally closed reed pipe 1405 and the second normally closed reed pipe 1406 is electrically connected with an input end of the controller 10, an output end of the controller 10 is electrically connected with a control end of a water inlet electromagnetic valve 1408 connected to a water inlet pipe 1615 of the purified water tower body 1601 through a water inlet electromagnetic valve driving circuit 1407, and the first normally closed reed pipe 1405 and the second normally closed reed pipe 1406 are matched with the annular magnet 1401. The schematic circuit structure of the water purification tower 16 is shown in fig. 8.

In operation, the float 14 moves up and down the sensing stem 1409 as the water level changes. When the water level in the water purification tower body 1601 is lower than the water inlet level, the float 14 is located below the water inlet level, the first normally closed reed switch 1405 is located outside the magnetic field range of the ring magnet 1401, at this time, two contacts of the first normally closed reed switch 1405 are always communicated, and after the controller 10 detects this state, the water inlet solenoid valve driving circuit 1407 drives the water inlet solenoid valve 1408 to open and keep, so that water is added into the water purification tower body 1601. When the water level in the water purification tower body 1601 is higher than the full water level, the float 14 is above the full water level, the second normally closed reed pipe 1406 is located outside the magnetic field range of the ring magnet 1401, at this time, two contacts of the second normally closed reed pipe 1406 are always connected, and after the controller 10 detects this state, the water inlet solenoid valve driving circuit 1407 drives the water inlet solenoid valve 1408 to close and keep, thereby stopping adding water to the water purification tower body 1601.

The water-gas mixer 17 comprises a first electromagnetic valve 1700, a fourth three-way joint 1711 and an air inlet pipeline 1705, wherein the first end of the fourth three-way joint 1711 is an air inlet end, the second end of the fourth three-way joint 1711 is an water inlet end, and the third end of the fourth three-way joint 1711 is an water outlet end; the first electromagnetic valve 1700 comprises a valve seat 1701, a coil assembly 1702, a valve core assembly and a return spring 1704, wherein the valve seat 1701 is connected with the coil assembly 1702, an air passing cavity 17011 is arranged in the valve seat 1701, the air passing cavity 17011 is communicated with the output end of the first ozone generator 1904 through an air inlet 17012, the coil assembly 1702 is provided with an air inlet channel 17021 which can be communicated with an air inlet pipeline 1705 of the water-air mixer, the valve core assembly comprises an electromagnetic rod 1703 arranged in the air inlet channel 17021, the return spring 1704 is arranged in the air inlet channel 17021, one end of the return spring 1704 is connected with one end of the electromagnetic rod 1703, the other end of the electromagnetic rod 1703 is provided with a plug capable of opening or closing the air inlet 17012, a ceramic chip 1707 for sealing the air inlet channel 17012 is further arranged in the air passing cavity 17011, a through hole 17071 for communicating the air passing hole 17011 with the air passing cavity 17011 is arranged on the ceramic chip 1707, and the plug comprises an air water gate 1708 which is fixedly connected with one end of the electromagnetic rod 1703 and is opposite to the through hole 17071.

The valve core assembly further comprises a gland 1709 that encases the electromagnetic rod 1703.

As shown in fig. 11 and 12, in an embodiment of the present invention, the water-gas mixer 17 further includes a connector 1710 fitted on the top end of the sealing sleeve 1709, and the gas-water gate 1708 is fastened to the upper end of the connector 1710 by a nut 1721; the gas gate 1708 is made of ceramic. A rubber gasket 1723 is arranged between the air water gate 1708 and the connecting piece 1710. A glue seal 1722 is arranged between the electromagnetic valve 1703 and the connecting piece 1710. A rubber seal 1724 is provided between the valve seat 1701 and the coil assembly 1702. A sealing rubber gasket 1725 is provided between valve seat 1701 and ceramic tile 1707.

As shown in fig. 13 and 14, in another embodiment of the present invention, the water-gas mixer 17 further includes a connector 1710 sleeved on the top end of the sealing sleeve 1709, and the water-gas gate 1708 is detachably connected to the top end of the connector 1710; the air lock 1708 is made of rubber. A glue seal 1722 is arranged between the electromagnetic valve 1703 and the connecting piece 1710. A rubber seal 1724 is provided between the valve seat 1701 and the coil assembly 1702. A sealing rubber gasket 1725 is provided between valve seat 1701 and ceramic tile 1707.

The water-gas mixer further comprises an air inlet branch pipe 1712 and an air inlet manifold 1713, wherein one end of each of the air inlet branch pipe 1712 and the air inlet pipeline 1705 is communicated with the air inlet manifold 1713, the other end of the air inlet branch pipe 1712 is communicated with the air passing cavity 17011, and the other end of the air inlet pipeline 1705 is communicated with the air passing cavity 17011 through an air inlet channel 17021; one end of the intake manifold 1713 is sealed, and the other end of the intake manifold 1713 is communicated with the first end of the three-way joint 1711. To increase the total flow of the gas stream, an intake manifold 1712 and an intake manifold 1713 are added.

Air intake branch 1712 and air intake pipeline 1705 all are perpendicular with air intake manifold 1713, even have water level detector on the air intake manifold 1713, and water level detector's output is connected with controller 10 electricity, and controller 10's output is through the control end electricity connection of intaking solenoid valve drive circuit 1714 with the solenoid valve 1700 of intaking. Because the water level detector is additionally arranged, whether the water-gas mixer 17 returns water or not can be known in time and a solution can be taken.

A sand head 1715 is arranged in the three-way joint 1711. The sanding head 1715 may be used to uniformly mix ozone into the water. The air inlet end of the sand head 1715 is positioned in the first end of the three-way joint 1711 and is communicated with the air passing cavity 17011, and the air outlet end of the sand head 1715 is positioned between the second end of the three-way joint 1711 and the third end of the three-way joint 1711.

The water level detector comprises a common electrode 1716 used for being grounded, a first electrode 1717 used for detecting whether the water level in the air inlet manifold 1713 exceeds the early warning water level or not, and a second electrode 1718 used for detecting whether the water level in an ozone conveying pipeline 1726 between the output end of an external first ozone generator and an air inlet 17012 exceeds the fault warning water level or not, wherein the first electrode 1717 is electrically connected with a first detection end of the controller 10 through a first voltage-dividing resistor 1719, the second electrode 1718 is electrically connected with a second detection end of the controller 10 through a second voltage-dividing resistor 1720, and the first detection end and the second detection end are pulse-switchable I/O port and A/D detection port multiplexing ends; the first voltage-dividing resistor 1719 and the first detection end, and the second voltage-dividing resistor 1720 and the second detection end are electrically connected with the positive electrode of the power supply.

The water-gas mixer 17 further comprises an early warning unit 1609, and the early warning unit 1609 is electrically connected with the controller 10.

The first detection end and the second detection end of the controller 10 are both I/O ports in a normal state, and the first detection end and the second detection end of the controller 10 are a/D detection ports when the water level is detected by the pulse. In a normal state, the first detection terminal and the second detection terminal are input to the controller 10 in a current-filling mode, and the voltages on the first electrode 1717 and the second electrode 1718 are zero volts, so that water cannot be electrolyzed. And the water level is detected by pulse, the detection time is extremely short, so the electrolysis time is extremely short, and the influence is basically negligible. Therefore, the situation that when the water level exceeds the early warning water level, the common electrode and the first electrode 1717 are always connected into an electrolysis loop for continuous electrolysis can be avoided, and substances harmful to human bodies are prevented from being generated by electrolysis.

When the controller 10 detects that the water level in the ozone delivery pipe 1726 is higher than the second water level, the controller 10 causes the water inlet solenoid valve 1408 to close via the water inlet solenoid valve driving circuit 1407, so that ozone cannot enter the three-way joint and water cannot enter the first ozone generator via the solenoid valve.

When the controller 10 detects that the water level in the intake manifold 1713 is higher than the early warning water level and lower than the failure warning water level, the control unit 10 controls the early warning unit 1609 to give an alarm.

The controller 10 is an STC12C5404AD chip and peripheral circuits thereof.

The air inlet pipeline 1705 is connected with the air inlet manifold 1713, and the air inlet manifold 1713 is connected with the first end of the three-way joint 1711 through a hard pipe quick-connection joint 8.

As shown in fig. 16 and 17, the quick pipe connection joint 8 includes a connection sleeve 803, a screw head 8021 which can be screwed with the connection sleeve 803 is arranged at the connection end of a first hard pipe 802 to be connected, and also includes a first arc component 8011 and a second arc component 8012, a flange 8041 is arranged at the connection end of a second hard pipe 804, the inner diameter of the connection sleeve 803 is larger than the outer diameter of the flange 8041, the first arc component 8011 and the second arc component 8012 are detachably connected and can form a ring 801 which is sleeved at the connection end of the second hard pipe 804, the outer diameter of the ring 801 is larger than the outer diameter of the flange 8041, the inner side wall of the ring 801 is attached to the outer side wall of the second hard pipe 804, the outer side wall of the ring 801 is attached to the inner side wall of the connection sleeve 803, and the ring 801 is limited by a stop 8031 at the outer end of the connection sleeve 803. When the first hard pipe 802 and the second hard pipe 804 are connected, the connecting end of the second hard pipe 804 with the flange 8041 is firstly passed through the connecting sleeve 803, the first arc component 8011 and the second arc component 8012 are connected into the ring 801 sleeved on the connecting end of the second hard pipe 804, and finally the screw head 8021 is screwed with the connecting sleeve 803, so that the connection between the first hard pipe 802 and the second hard pipe 804 can be realized. The first arc part 8011 and the second arc part 8012 which are detachably connected form an annular limiting part, so that the hard pipe is not easy to deform and shift, the connection reliability between hard pipes is high, and the sealing performance is good.

A sealing ring 805 is further arranged on the end face of the thread head 8021; when the first hard pipe 802 and the second hard pipe 804 are connected, the seal ring 805 is interposed between the end surface of the flange and the end surface of the screw head 8021. In the prior art, since the flange 8041 is not provided at the second hard pipe 804, the seal ring 805 cannot be provided on the screw head 8021. In the invention, the flange 8041 is arranged at the second hard pipe 804, so that the flange can be abutted against the sealing ring 805 on the thread head 8021 to realize the sealing effect.

A groove is formed in the first arc member 8011, and a rib portion 80121 which can be clamped in the groove is formed in the second arc member 8012. During installation, the convex rib portion 80121 is directly aligned with the groove, and then the connecting sleeve 803 is pulled towards the outer end, so that the first arc component 8011 and the second arc component 8012 can be connected conveniently and quickly.

The periphery of the connecting sleeve 803 is also provided with a convex rib 8032 which is convenient for tightening.

The first hard pipe 802 and the second hard pipe 804 are PVC hard pipes. The diameter ranges of the first hard pipe 802 and the second hard pipe 804 are both 2.5 mm-250mm.

Fig. 18 to 27 show the structure of a direct drinking water extension 1900. The direct drinking water extension 1900 comprises a first three-way joint 1201, a water tap assembly 9 and a hot liner assembly 11, wherein the water tap assembly 9 comprises a cold water tap 901 and a hot water tap 902, the hot liner assembly 11 comprises a hot liner 1101, a first end of the first three-way joint 1201 is used for being communicated with an incoming water end of a direct drinking water supply and delivery pipe network, a second end of the first three-way joint 1201 is used for being communicated with a water removal end of the direct drinking water supply and delivery pipe network, and the direct drinking water extension further comprises a one-way valve 1111; the third end of the first three-way joint 1201 is communicated with an inlet of a water supply pipeline of the direct drinking water extension 1900, a water inlet of the cold water faucet 901 and a water inlet of the hot water container 1101 are both communicated with an outlet of the water supply pipeline of the direct drinking water extension 1900, and a water outlet of the hot water container 1101 is communicated with a water inlet of the hot water faucet 902; the steam outlet of the hot bladder 1101 is communicated with the inlet of the one-way valve 1111, and the outlet of the one-way valve 1111 is communicated with the outside. The thermal liner 1101 is wrapped with a thermal insulation material.

Because the one-way valve 1111 is arranged (the one-way valve 1111 only allows the steam in the hot liner 1101 to be discharged through the one-way valve 1111 and does not allow outside air to enter the hot liner), when the hot liner 1101 is heated, the pressure of the steam can open the one-way valve 1111, and the steam can be discharged through the one-way valve 1111 (can be discharged to a waste water box of the direct drinking water extension 1900 and the like); when the hot bladder 1101 is not heated, the check valve 1111 is not pressed and is in a closed state. Therefore, in the invention, the steam outlet of the hot liner 1101 is not required to be connected with a water tank, direct drinking cold water is not heated, the taking effect of the direct drinking cold water is not influenced, and the water using experience is not influenced.

The direct drinking water supply and delivery pipe network directly provides direct drinking water for the cold water faucet 901 and the hot container 1101 through the first three-way joint 1201 and the water supply pipeline of the direct drinking water extension 1900, and water supply by a water tank is avoided. The direct drinking water supply and delivery pipe network not only provides direct drinking water for the direct drinking water extension 1900, but also does not influence the normal supply and delivery of the direct drinking water to other water taking points by the direct drinking water supply and delivery pipe network, and the direct drinking water extension 1900 is equivalent to a 'section of pipe' directly connecting the direct drinking water supply and delivery pipe network, so that the direct drinking water supply and delivery pipe network is called 'pipe overflow'. Because the direct drinking water extension 1900 does not adopt a water tank water supply mode, the invention overcomes the problems of secondary pollution, water quality aging, large labor consumption for cleaning and disinfection, large consumption for cleaning and disinfecting agent and residual cleaning and disinfecting agent existing in the traditional water tank water supply mode direct drinking water extension. Meanwhile, water is directly taken by the water pressure of a supply and delivery pipe network without being supplied and taken by the siphon principle of a water tank when water is taken, so that the water yield is high.

The first three-way joint 1201 is a chevron-shaped three-way joint, and the middle end of the chevron-shaped three-way joint is the third end of the first three-way joint 1201. Because the third end upper position installation of first three way connection 1201, therefore if do not use direct drinking water extension 1900 to supply water for a long time, when direct drinking water supplies the water channel flow in the transmission pipe network, even direct drinking water extension 1900 does not get water for a long time, the water in the third end of first three way connection 1201 also can be taken into direct drinking water supplies the transmission pipe network, participates in the circulation flow, avoids producing the stagnant water.

The water faucet assembly 9 further comprises a funnel-shaped water outlet nozzle 912, a closed cavity 9121 is defined by the upper portion of the funnel-shaped water outlet nozzle 912, the cold water faucet 901 and the hot water faucet 902, water outlets of the cold water faucet 901 and the hot water faucet 902 are communicated with the cavity 9121, and the cavity 9121 is communicated with the outside through a water outlet through pipe 9122 at the lower portion of the funnel-shaped water outlet nozzle 912.

The water outlets of the cold water faucet 901 and the hot water faucet 902 are round holes, and the cross section of the water outlet through pipe 9122 is round. This configuration facilitates production and assembly.

The cold water tap 901 and the hot water tap 902 are detachably connected with the water outlet nozzle 912, so that the disassembly and the assembly are convenient.

The direct drinking water extension 1900 further comprises a second three-way joint 1617, the first end and the second end of the second three-way joint 1617 are straight-through ends, the third end of the second three-way joint 1617 is a bypass end, the first end of the second three-way joint 1617 is connected with an outlet of a water supply pipeline of the direct drinking water extension 1900, the second end of the second three-way joint 1617 is connected with a water inlet of the cold water faucet 901, and the third end of the second three-way joint 1617 is connected with a water inlet of the hot water container 1101.

By means of the structure, even if the cold water faucet 901 is not used for taking water for a long time, when hot water is received, because the branch water supply pipelines are communicated with the first end of the second three-way joint 1617, water in the branch water supply pipelines can flow into the hot water container 1011 through the first end and the third end of the second three-way joint 1617; meanwhile, as the first end and the second end of the second three-way joint 1617 are straight-through ends, the impact force of water flow in the branch water supply pipeline can take away and timely supplement water at the water inlet of the cold water tap 901 and the second end of the second three-way joint 1617 through the third end of the second three-way joint 1617, so that water quality aging in a pipeline between the branch water supply pipeline and the water inlet of the cold water tap 901 is avoided, and bacteria breeding is prevented.

The length of the second end of the second tee joint 1617 is 0-5 cm. Through tests, the second end of the second three-way joint 1617 is too long, which is not favorable for driving water to flow; the length of the second end of the second three-way joint 1617 is too short, which is not favorable for production and disassembly and assembly, and the length of the second end of the second three-way joint 1617 is most suitable for 0-5 cm.

The first end of the second three-way joint 1617 is used for being detachably connected with an outlet of a water supply pipeline of the direct drinking water extension 1900, the second end of the second three-way joint 1617 is fixedly connected with a water inlet of the cold water faucet 901, and the third end of the second three-way joint 1617 is used for being detachably connected with a water inlet of the hot water container.

An inflatable and deflatable bladder 1102 is also connected between the steam outlet of the hot bladder 1101 and the inlet of the one-way valve 1111.

Due to the arrangement of the inflatable and deflatable air bag 1102, when the hot bladder 1101 is heated, water vapor firstly enters the air bag 1102 through the vapor outlet, the air bag 1102 is inflated at the moment, and when the amount of the vapor is too large, the vapor is discharged through the check valve 1111; when the hot bladder 1101 is not heated, the water vapor is liquefied into water stored in the air bag 1102, and the air bag 1102 is contracted at this time. This avoids excessive water vapor being discharged.

The air bag 1102 is made of silica gel, and the air bag 1102 is connected with a steam outlet of the hot liner 1101 through a hard tube 1103; the air bag 1102 and the hard tube 1103 are both vertically arranged above the hot bladder 1101. The balloon 1102 is made of silicone, and thus has certain hardness and deformability. The air bag 1102 and the rigid straight pipe 1103 are vertically arranged above the hot liner 1101, so that liquid water in the air bag 1102 can return to the hot liner 1101 for recycling.

The direct drinking water extension 1900 further comprises a water level detector 1104 and a water inlet electromagnetic valve 907 arranged on a water supply pipeline of the direct drinking water extension 1900, wherein the water level detector 1104 comprises a common electrode 11043 which is grounded, a water inlet electrode 11041 which is used for detecting whether the water level in the hot container 1101 exceeds the water inlet level and a full water electrode 11042 which is used for detecting whether the water level in the hot container 1101 exceeds the full water level; the water inlet electrode 11041 is electrically connected with the water inlet detection end of the controller 10 through a first voltage-dividing resistor 1109, the full water electrode 11042 is electrically connected with the full water detection end of the controller 10 through a second voltage-dividing resistor 1110, and the water inlet detection end and the full water detection end are both pulse-switchable I/O port and A/D detection port multiplexing ends; the first voltage-dividing resistor 1109 and the water inlet detection end, and the second voltage-dividing resistor 1110 and the full water detection end are electrically connected with the positive electrode of the power supply; the controller 10 is electrically connected with the control end of the water inlet solenoid valve 907 through the water inlet solenoid valve driving circuit 906.

The water inlet detection end and the full water detection end of the controller 10 are both I/O ports in a normal state, and the water inlet detection end and the full water detection end of the controller 10 are A/D detection ports when the water level is detected by pulse. Under normal conditions, the water inlet detection end and the full water detection end are input into the controller 10 in a current filling mode, the voltage on the water inlet electrode 11041 and the full water electrode 11042 is zero volt, and water cannot be electrolyzed. And the water level is detected by pulse, the detection time is extremely short, so the electrolysis time is extremely short, and the influence is basically negligible. Therefore, the common electrode 11043 and the water inlet electrode 11041 can be prevented from being connected into an electrolysis loop and continuously electrolyzed when the water level exceeds the water inlet level, and substances harmful to human bodies are prevented from being generated by electrolysis. When the controller 10 detects that the water level in the hot container 1101 is lower than the water inlet level, the controller 10 drives the water inlet electromagnetic valve 907 to open through the water inlet electromagnetic valve driving circuit 906, and the direct drinking water enters the hot container 1101; when the controller 10 detects that the water level in the hot tank 1101 is higher than the full water level, the controller 10 closes the water inlet solenoid valve 907 through the water inlet solenoid valve driving circuit 906, and the direct drinking water cannot enter the hot tank 1101.

The terminals of the common electrode 11043, the water inlet electrode 11041 and the full water electrode 11042 are all fixed on the hard tube 1103.

The controller 10 is an STC12C5404AD chip and a peripheral circuit thereof.

A first normally open reed switch 904 is arranged in the cold water faucet 901, and a first magnet 905 which is matched with the first normally open reed switch 904 is arranged on a cold water control handle 9011 of the cold water faucet 901; a first contact of the first normally open reed pipe 904 is grounded, a second contact of the first normally open reed pipe 904 is electrically connected with the controller 10, and the output end of the controller 10 is electrically connected with the control end of a water inlet electromagnetic valve 907 connected to a water supply pipeline of the direct drinking water branch machine 1900 through a water inlet electromagnetic valve driving circuit 906; when cold water is received, the cold water control handle 9011 drives the first magnet 905 to move, and the first normally open reed pipe 904 is located within the magnetic field range of the first magnet 905.

A second normally open reed switch 908 is arranged in the hot water faucet 902, and a second magnet 909 matched with the second normally open reed switch 908 is arranged on a hot water control handle 9021 of the hot water faucet 902; a first contact of a second normally open reed switch 908 is grounded, a second contact of the second normally open reed switch 908 is electrically connected with the controller 10, and the output end of the controller 10 is electrically connected with the control end of a water inlet electromagnetic valve 907 connected to a water supply pipeline of the direct drinking water branch machine 1900 through a water inlet electromagnetic valve driving circuit 906; when hot water is supplied, the hot water control handle 9021 drives the second magnet 909 to move, and the second normally open reed pipe 908 is located within the magnetic field range of the second magnet 909.

With the above structure, the water inlet solenoid valve 907 is normally in a closed state. When cold water needs to be taken, the cold water control handle 9011 drives the first magnet 905 to move, the first normally-open reed pipe 904 is located in the magnetic field range of the first magnet 905, at the moment, the first contact and the second contact of the first normally-open reed pipe 904 are communicated, after the controller 10 detects the state, the water inlet electromagnetic valve 907 is driven to be opened through the water inlet electromagnetic valve driving circuit 906, and water in the branch water supply pipelines flows out through the cold water faucet 901. The hot water intake process is similar to the cold water intake process. When water is not taken, the water inlet electromagnetic valve 907 is in a closed state, so that water in a water supply pipeline of the shunting machine can be prevented from being heated by water vapor in the hot liner 1101, and the cold water taking effect is prevented from being influenced.

A temperature sensor 1105 and a heating element 1106 are arranged in the hot bladder 1101, the temperature sensor 1105 is electrically connected with the input end of the controller 10 through an A/D converter 1107, and the output end of the controller 10 is electrically connected with the heating element 1106 through a heating element driving circuit 1108.

With the above structure, the controller 10 is preset with an appropriate water supply temperature of the hot tank. When the hot liner 1101 is operated, the heating element 1106 heats water in the hot liner 1101, the temperature sensor 11058 detects water temperature in the hot liner 1101 and sends the water temperature to the controller 10, the controller 10 compares the detected water temperature of the hot liner with the set water supply temperature of the hot liner, and when the detected water temperature of the hot liner reaches the water supply temperature of the hot liner, the controller 10 controls the heating element 1106 to stop operating through the heating element driving circuit 1108.

The temperature sensor 1105 is a temperature sensitive resistor. The heating member 1106 is a heating wire.

The third end of the first three-way joint 1201 is connected with a water supply pipeline of the direct drinking water extension 1900 through an extension main valve 1202. The extension main valve 1202 can be used for water lock and water quantity adjustment.

The components of the direct drinking water extension 1900 are installed in an extension housing 1204, the extension housing 1204 is provided with a detachable front panel 1205, and the outlet of a one-way valve 1111 is communicated with a waste water box 1203 on the front panel 1205. The adjustment handle of extension main valve 1202 extends from a side panel of extension housing 1204. Faucet assembly 9 is exposed through front panel 1205. The bottom surface of the water leakage protection screen 1206 is insulated from the extension housing 1204.

A water leakage protection plate 1207 is also arranged in the bottom of the extension housing 1204, and the water leakage protection plate 1207 is electrically connected with the controller 10 through a water leakage protection sensing circuit 1207.

In the direct drinking water dispenser 1900, the water level detection logic in the hot water tank 1101 is as follows:

1. when the direct drinking water extension 1900 is powered on each time, the direct drinking water extension is in a standby state firstly, at this time, the full water detection end and the water inlet detection end connected to the positions of the full water electrode 11042 and the water inlet electrode 11041 of the controller 10 are both in a common I/O port input form, the full water detection end and the water inlet detection end are input into the controller 10 in a current filling form, the voltages on the full water electrode 11042 and the water inlet electrode 11041 are zero volts, and in fact, the hot water container 1101 is anhydrous or lower than the water inlet level at this time, and the ionized water condition cannot be generated.

2. When the direct drinking water dispenser 1900 is started up by pressing down each time, if water is available or not available, the full water detection end and the water inlet detection end connected to the full water electrode 11042 and the water inlet electrode 11041 of the controller 10 are switched to an A/D detection input state from a common I/O port input state, and voltages on the full water electrode 11042 and the water inlet electrode 11041 are different due to different resistance values at the moment: (1) if water is sensed between the full water electrode 11042 or the water inlet electrode 11041 and the common electrode 11043, the voltage of the full water detection end and the water inlet detection end is about 2-3V (the water quality is different, the heating wires are different, and the voltage is changed), the hot liner 1101 does not need to work by water inlet, the operation only needs one time, and the detection is stopped once within 0.05 second; (2) if no water is sensed between the full water electrode 11042 or the water inlet electrode 11041 and the common electrode 11043, the voltage of the full water detection end and the water inlet detection end is about 5V, the water inlet electromagnetic valve 907 is opened to feed water at the moment, pulse detection signals are generated once every 5 seconds at the moment, and the detection time length is 0.05 second each time. Since the water inlet and the water outlet are performed simultaneously, although the electrodes of the water level detector 1104 are submerged in the water, the water flows, and the water contacting the electrodes flows away without time for electrolysis, so that the electrolysis problem is negligible.

If no person gets hot water for daily work of the direct drinking water extension 1900, the water level detector 1104 does not detect, hot water fetching operation occurs, and the detection mode of the water level detector 1104 is consistent with the 2- (2) mode.

3. Every time the direct drinking water extension 1900 presses the heating button switch or automatically starts heating, the controller 10 will change the full water detection end and the water inlet detection end from the input form of the ordinary I/O port into the input form of the A/D detection, detect whether the hot container 1101 needs water inlet, that is, whether the water level is lower than the water inlet level, and only once detect is carried out every time the heating button switch is pressed and the heating action is automatically started, and the time is 0.05 second every time. The normally closed detection method for detecting the water level only by starting the related functionality greatly reduces the frequency and time of water level detection, is particularly suitable for detecting the liquid level of the liquid which is easy to be electrolyzed so as to avoid the liquid electrolysis of the detected liquid level from influencing the quality of the liquid, and is particularly suitable for the liquid level detection of the working mode of sending a liquid supply and taking signal and opening the liquid outlet valve through a wired or wireless signal.

In the direct drinking water dispenser 1900, the water level control flow of the hot water container 1101 is as follows:

when the direct drinking water extension 1900 is powered on, the water level detector 1104 automatically detects whether water is in the hot water tank 1101 and the state of the water level, and judges whether the hot water tank 1101 automatically enters water, which is divided into the following situations:

1. the direct drinking water extension 1900 is started to work, when no water exists in the hot container 1101, the water inlet electromagnetic valve 907 is triggered to be automatically opened, and the hot container 1101 automatically feeds water.

2. When the direct drinking water extension 1900 is started to work, the water level detector 1104 detects that water exists in the hot container 1101, but the water level does not reach the water inlet electrode 11041, the water inlet electromagnetic valve 907 is triggered to be opened, and the hot container 1101 is filled with water; when the water level reaches the full water electrode 11042, the water inlet electromagnetic valve 907 is closed, and water inlet is stopped.

3. When the direct drinking water extension 1900 is started to work, the water level detector 1104 detects that water exists in the hot water container 1101, and the water level reaches the water inlet electrode 11041 and does not exceed the water level of the full water electrode 11042, the water inlet electromagnetic valve 907 is not opened, and the hot water container 1101 does not feed water.

4. The direct drinking water extension 1900 is started to work, the water level detector 1104 detects that water exists in the hot container 1101, when the water level reaches the water full electrode 11042, the water inlet electromagnetic valve 907 is not opened, and the hot container 1101 does not feed water.

5. When the direct drinking water extension 1900 is started to work, the water level detector 1104 detects that water exists in the hot water container 1101, the water level reaches the water level of the full water electrode 11042, and the water leakage protection plate 1206 does not detect water leakage, the water inlet electromagnetic valve 907 is not opened, and the hot water container 1101 does not feed water.

6. When the direct drinking water dispenser 1900 starts to work, the water level detector 1104 detects that water exists in the hot water container 1101, and the water leakage protection plate 1206 detects water leakage, the controller 10 reports a fault and performs automatic protection state treatment, and all work stops; at this time, if water needs to be taken from the hot water faucet 902, several situations may occur after the machine is turned on again.

(1) The direct drinking water extension 1900 can work normally;

(2) the direct drinking water extension 1900 cannot work normally, and the direct drinking water extension 1900 is automatically protected and needs to find out the fault reason;

(3) when water is supplied for a period of time, the user can see whether the water level is changed

a. If the water leakage protection plate 1206 detects water leakage, the direct drinking water dispenser 1900 is automatically protected and needs to find out the fault reason.

b. If the leakage protection plate 1206 does not detect leakage, the direct drinking water extension apparatus 1900 can resume normal working state.

7. When the water outlet button of the hot water faucet 902 is pressed, the water inlet electromagnetic valve 907 is opened (except that the direct drinking water extension 1900 is in a fault automatic protection state).

As shown in fig. 8, the overall working principle of the direct drinking water extension 1900 is as follows:

1. the direct drinking water dispenser 1900 is ready before operation, and the circuit and the waterway are ready.

2. When the power socket is plugged, the direct drinking water extension 1900 is in a standby state, and at the moment, the power indicator lamp is red.

3. When the power button is pressed, the direct drinking water extension 1900 is in the working state, and at this time, the power indicator light is green. When the power button is pressed again, the direct drinking water dispenser 1900 is in a standby working state, and at this time, the power indicator light is red.

4. The automatic water inlet function: when the direct drinking water dispenser 1900 is in a working state, the water level detector 1104 detects that no water exists in the hot container 1101 (pulse voltage detection), the water inlet electromagnetic valve 907 is opened, water enters the hot container 1101, and the water inlet electromagnetic valve 907 is automatically closed when the water level reaches the full water electrode 11042.

5. When a water outlet button of the cold water faucet 901 or the hot water faucet 902 of the direct drinking water extension 1900 is pressed, the water inlet electromagnetic valve 907 is opened, and the direct drinking water extension 1900 supplies cold or hot drinking water.

6. After the hot container 1101 is filled with water and the water level reaches the water inlet electrode 11041, the direct drinking water extension 1900 automatically heats the water in the hot container 1101 at 95 ℃ once, and then heats the water once every 24 hours to perform circulation.

7. Heating-heat preservation function: when the temperature of water in the hot water container 1101 of the direct drinking water extension 1900 reaches 95 ℃, the direct drinking water extension 1900 turns off the hot water making function and is in a heat preservation state, and the hot water making indicator lamp is green; when the water temperature is cooled to 80 ℃, the direct drinking water dispenser 1900 restarts the function of heating water, and the heating water indicator lamp is red. (the water temperature is 95 ℃, 65 ℃ and 40 ℃, and the specific installation is determined according to actual requirements).

8. A sleep function: after the direct drinking water extension 1900 heats water and keeps warm, no one uses high-temperature water, the direct drinking water extension 1900 can be in a dormant state after 70 minutes, at the moment, the hot water heating indicator lamp can continuously flash, the hot water heating function can stop, other functions are still normal, and hot water can be heated again only by pressing the heating key again.

9. Water shortage protection: when the hot container 1101 of the direct drinking water extension 1900 is filled with water, if the water level of the hot container 1101 does not reach the water inlet line within 8 minutes, the controller 10 judges that the water shortage protection is performed, the water shortage indicator lamp flickers to display red, and the water shortage indicator lamp needs to be reset again to work.

10. Water leakage protection: when the direct drinking water extension 1900 is in a state of starting, water inlet, heating and the like, if the water leakage protection plate 1206 is short-circuited by water, the phenomenon of water leakage may exist in the direct drinking water extension 1900, at the moment, the direct drinking water extension 1900 immediately becomes a water leakage protection state, a water inlet indicator (red light) flashes and displays, a power supply indicator (green light is on), and various functional operations are invalid. The direct drinking water dispenser 1900 can be restored to normal operation state only when the reason of water leakage fault is manually solved, for example, after the water drops on the water leakage protection sheet are wiped off.

As shown in fig. 26 and fig. 27, another embodiment of the instant drinking water extension 1900 repeats the first embodiment, except that the cold water faucet 901 is provided with a first self-resetting travel switch 910, a first contact of the first self-resetting travel switch 910 is grounded, a second contact of the first self-resetting travel switch 910 is electrically connected with the controller 10, and an output end of the controller 10 is electrically connected with a control end of a water inlet electromagnetic valve 907 connected to a water supply circuit of the instant drinking water extension 1900 through a water inlet electromagnetic valve driving circuit 906; when cold water is received, the cold water control handle 9011 drives the control rod of the first self-resetting travel switch 910 to switch on the first contact and the second contact of the first self-resetting travel switch 910.

A second self-resetting travel switch 911 is arranged on the hot water faucet 902, a first contact of the second self-resetting travel switch 911 is grounded, a second contact of the second self-resetting travel switch 911 is electrically connected with the controller 10, and the output end of the controller 10 is electrically connected with the control end of a water inlet electromagnetic valve 907 connected to a water supply pipeline of the direct drinking water branch machine 1900 through a water inlet electromagnetic valve driving circuit 906; when hot water is supplied, the hot water control handle 9021 drives a control rod of the second self-resetting travel switch 911 to be communicated with a first contact and a second contact of the second self-resetting travel switch 911.

The working principle of using the self-reset travel switch and the normally open reed switch to control the cold water and the hot water is similar. The water inlet solenoid valve 907 is normally in a closed state. When cold water needs to be taken, the cold water control handle 9011 drives the control rod of the first self-resetting travel switch 910 to be communicated with the first contact and the second contact of the first self-resetting travel switch 910, after the controller 10 detects the state, the water inlet electromagnetic valve 907 is driven to be opened through the water inlet electromagnetic valve driving circuit 906, and water in a water supply pipeline of the direct drinking water extension 1900 flows out through the cold water faucet 901. The hot water intake process is similar to the cold water intake process. When water is not taken, the water inlet electromagnetic valve 907 is in a closed state, so that water in the water supply pipeline of the straight water dispenser 1900 can be prevented from being heated by water vapor in the hot water container 1101, and the cold water taking effect is prevented from being influenced.

As shown in fig. 28, in another embodiment of the present invention, the raw water purification unit 1902 includes a first-stage PP-cotton water purification module 19029, a high-pressure booster pump 1919, a nanofiltration membrane water purification module 1920, an RO membrane water purification module 1921, an activated carbon water purification module 19023, a second-stage PP-cotton water purification module 19020, etc. which are sequentially connected, and one or more water purification modules approved by sanitation may be additionally connected according to the quality of raw water and the requirements of users. The concentrated water obtained by the treatment of the nanofiltration membrane water purification component 1920 or the RO membrane water purification component 1921 and the raw water from the raw water solenoid valve 19024 flow to the first-stage PP cotton water purification component 19029 through the raw concentrated water converging tee 1922.

While the embodiments of the present invention have been described in connection with the drawings, the present invention is not limited to the above-described embodiments, which are intended to be illustrative rather than restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A water purification quality guarantee system comprises a raw water supply unit (1901), a raw water purification unit (1902), a water-air mixer (17), a booster pump (1903), a water purification tower (16), a first ozone generator (1904) and an air pump (1905),

the water purification tower (16) comprises a water purification tower body (1601), the top of the water purification tower body (1601) is provided with an siphon port (16011), a raw water supply unit (1901) is communicated with the water inlet end of a water-air mixer (17) through a raw water purification unit (1902), an air pump (1905) is communicated with the air inlet end of a first ozone generator (1904), the output end of the first ozone generator (1904) is communicated with the air inlet end of the water-air mixer (17), the water outlet end of the water-air mixer (17) is communicated with the water inlet of the water purification tower (16) through a booster pump (1903), the water purification tower is characterized by further comprising a first three-way joint (1602), a second three-way joint (1617), a reflux electromagnetic valve (1907) and at least one direct drinking water extension (1900), the first end of the second three-way joint (1617) is communicated with the water outlet of the water purification tower (16), the second end of the second three-way joint (1617) is communicated with a water drainage electromagnetic valve (1616), and the direct drinking water extension (1900) is connected in series between the third three-way joint (1617) and the water mixing end of the direct drinking water extension (17);

the first end of the first three-way joint (1602) is communicated with the siphon port (16011), the second end of the first three-way joint (1602) is communicated with the first air filter (1603), and the third end of the first three-way joint (1602) is communicated with the output end of the second ozone generator (1604);

the water-gas mixer (17) comprises a first electromagnetic valve (1700), a fourth three-way joint (1711) and an air inlet pipeline (1705), wherein the first end of the fourth three-way joint (1711) is an air inlet end, the second end of the fourth three-way joint (1711) is an water inlet end, and the third end of the fourth three-way joint (1711) is an water outlet end; the first electromagnetic valve (1700) comprises a valve seat (1701), a coil assembly (1702), a valve core assembly and a return spring (1704), wherein the valve seat (1701) is connected with the coil assembly (1702), an air passing cavity (17011) is arranged in the valve seat (1701), the air passing cavity (17011) is communicated with the output end of the first ozone generator (1904) through an air inlet hole (17012), the coil assembly (1702) is provided with an air inlet channel (17021) which can be communicated with an air inlet pipeline (1705) of the water-air mixer, the valve core assembly comprises an electromagnetic rod (1703) arranged in the air inlet channel (17021), the return spring (1704) is arranged in the air inlet channel (17021), one end of the return spring (1704) is connected with one end of the electromagnetic rod (1703), the other end of the electromagnetic rod (1703) is provided with a plug which can open or close the air inlet hole (17012), the air passing cavity (17011) is also provided with a plug (1707) which seals the air inlet hole (17012), a through hole (3211) which is communicated with the air passing hole (17011) is arranged on the air passing cavity (1707), and the air passing hole (17038) is connected with an air gate (17038) and a water-fixing plug (zft (1708);

also comprises an ozone concentration regulating valve connected between the raw water purification unit (1902) and the water inlet end of the water-gas mixer (17).

2. The water purification quality assurance system of claim 1, wherein a variable frequency pump (1913) is connected between the third end of the second tee joint (1617) and the direct drinking water extension (1900).

3. Water purification quality assurance system according to claim 2, wherein a raw water detection device (1917) is connected between the raw water supply unit (1901) and the raw water purification unit (1902).

4. A water purification quality assurance system according to claim 3, wherein a raw water valve (1911) is connected between the raw water supply unit (1901) and the raw water detection device (1917).

5. The water purification quality guarantee system according to claim 1, wherein at least one ultraviolet lamp tube (1607) is arranged in the water purification tower body (1601) and is positioned above the full water level of the water purification tower body (1601).

6. The water purification quality guaranteeing system according to claim 5, wherein one end of each ultraviolet lamp tube (1607) is provided with a photosensitive sensor (1608), the output end of the photosensitive sensor (1608) is electrically connected with the controller (10), and the output end of the controller (10) is electrically connected with the early warning unit (1609).

7. The water purification quality assurance system of claim 1, wherein the spool assembly further comprises a sealing sleeve (1709) encasing the electromagnetic rod (1703).

8. Water purification quality assurance system according to claim 6, characterized in that the controller (10) is an STC12C5404AD chip and its peripheral circuits.