Direct drinking water circulation purification device

Abstract

The invention belongs to the field of water purification, and particularly relates to a direct drinking water circulation purification device which comprises a first filtering tank and a second filtering tank, the first filtering tank and the second filtering tank are both filled with adsorption filler, when sewage passes through the device, large-particle substances such as rust and silt in the sewage can be filtered and adsorbed, and the sewage can be purified. After the sewage enters the reverse osmosis filter cartridge, water molecules can continuously penetrate through a membrane and are discharged into a concentration pipe through a purified water output end, the sewage can be discharged from a sewage pipe through a wastewater output end, the sewage discharged from the sewage pipe can enter a backflow box, and a water pump is arranged in the backflow box; the third circulating filtration module is used for injecting sewage discharged by the reverse osmosis filter cartridge and new sewage into the reverse osmosis filter cartridge together for circulating filtration and purification, so that the third circulating filtration module can stably discharge purified water, and meanwhile, the sewage can be purified for multiple times.

Description

Technical Field

[0001] The present invention belongs to the field of water purification, and more specifically, relates to a direct drinking water circulation purification device. Background Art

[0002] Direct drinking water, also known as healthy live water, refers to water that is free of pollution, not degraded, meets the physiological needs of the human body, and has a weakly alkaline pH value and can be directly drunk. A direct drinking water purification system is a device that deeply purifies tap water into high-quality water that can be directly drunk through multi-stage filtration, membrane separation technology, and a circulating pipe network design. Traditional water purification devices often only inject sewage into the purification equipment for a single purification process, which not only easily leads to incomplete purification but also easily generates a large amount of sewage with too high a pollution concentration to be treated. Moreover, traditional purification devices often lack effective sterilization and purification means and only use screening and adsorption means to purify the water body, resulting in the final direct drinking water being difficult to meet the standards.

[0003] Therefore, the present invention provides a direct drinking water circulation purification device. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: A direct drinking water circulation purification device of the present invention includes a first filter tank and a second filter tank. The output end of the first filter tank is connected to the input end of the second filter tank. The interiors of the first filter tank and the second filter tank are both filled with adsorption fillers. The output end of the second filter tank is connected to a third circulation filtration module. The third circulation filtration module includes a plurality of reverse osmosis filtration cylinders. Each reverse osmosis filtration cylinder has a purified water output end and a wastewater output end. A centralized pipe is fixedly connected between the plurality of purified water output ends, and a sewage pipe is fixedly connected between the plurality of wastewater output ends. One side of the sewage pipe is connected to a reflux tank, and the reflux tank is communicated with the plurality of reverse osmosis filtration cylinders. The output end of the centralized pipe is provided with a microelectrolysis tank, the output end of the microelectrolysis tank is provided with a mixing tank, and a corona ozone generator is fixedly connected to one side near the top of the mixing tank. The sewage to be purified is passed through the first filtration tank and the second filtration tank. The adsorption filler in the first filtration tank can be quartz sand filler, which can filter and adsorb large particulate matters such as rust and sediment in the sewage when the sewage passes through. Then the sewage enters the second filtration tank, and the adsorption filler in the second filtration tank can be activated carbon, which can effectively adsorb macromolecular organic matters in the sewage. Then the sewage enters the third circulation filtration module and passes through the reverse osmosis filtration cylinder. The reverse osmosis filtration cylinder is internally provided with a cylindrical RO reverse osmosis filter element. After the sewage enters the reverse osmosis filtration cylinder, water molecules will continuously pass through the membrane and be discharged into the central pipe through the purified water output end, while substances such as ions and small particulate organic matters will be isolated on the other side of the membrane, forming sewage with a higher pollution concentration. The sewage will be discharged from the sewage pipe through the wastewater output end. The sewage discharged from the sewage pipe will enter the reflux tank. The reflux tank is internally provided with a water pump for injecting the sewage discharged from the reverse osmosis filtration cylinder and new sewage into the reverse osmosis filtration cylinder together for cyclic filtration and purification. In this way, not only can it ensure that the third circulation filtration module can stably discharge purified water, but also the sewage will be purified multiple times. It should be noted that continuously maintaining the inflow of external sewage will cause the pollution degree of the sewage in the sewage pipe to gradually increase, and at the same time, the amount of purified water discharged from the central pipe will decrease. After a period of time, all the sewage in the reflux tank needs to be discharged to reduce the load on the reverse osmosis filtration cylinder. At this time, it is meaningless to purify the high-concentration sewage again, and it is best to discharge it directly. There are still many bacteria and other substances remaining in the purified water. The purified water is passed through the microelectrolysis tank. The microelectrolysis tank will use the electrolysis effect under low-voltage DC conditions to generate various active substances in the water, such as hydrogen peroxide, hydroxide ions, etc., which can effectively kill various bacteria, viruses, algae and other microorganisms, and have a significant killing effect on common pathogenic bacteria such as Escherichia coli, Staphylococcus aureus, Vibrio cholerae, etc., ensuring the hygienic safety of drinking water, without adding chemical agents and without generating harmful residues. At the same time, the active substances generated during the electrolysis process can remain in the water for a certain period of time and have the ability of continuous disinfection. However, relatively speaking, the active substances generated by microelectrolysis still cannot kill some difficult-to-treat substances, such as common molds and viruses in wastewater. The protein coat and nucleic acid and other components on the surface of the virus are resistant to the oxidation substances generated by microelectrolysis, and the mycelium and spores of the mold have strong stress resistance, and it is difficult for the oxidation substances generated by microelectrolysis to completely penetrate into the interior of the mold mycelium. The water purified by the microelectrolysis tank is passed through to the mixing tank. The corona ozone generator uses a high-voltage electric field to decompose and recombine oxygen molecules in the air into ozone, and discharges the ozone into the mixing tank to mix with the purified water. Ozone is a stronger oxidant that can kill bacteria, viruses, algae and other microorganisms in the water more quickly and thoroughly. For viruses, ozone can directly act on the protein coat and nucleic acid of the virus, destroy its structure and make it lose its activity. For molds, it can destroy the cell wall and cell membrane of the mold, resulting in the death of mold cells.Through the mutual cooperation of the active substances of ozone and micro-electrolysis, harmful substances to the human body in sewage can be effectively and quickly killed, making the water quality meet the standards. At the same time, the active substances of micro-electrolysis have a long retention time, so that the direct drinking water remains sterile for a long time after purification. At the same time, when ozone is used for purification alone, a relatively high concentration of ozone is required. Although ozone will decompose by itself at room temperature and will not remain in the water, it is toxic to a certain extent. If the concentration is too high during use, it is easy to cause pollution to the operation area. After combining with micro-electrolysis, a lower concentration of ozone can be used for purification work, greatly reducing safety problems.

[0006] Preferably, feed pipes are connected to the tops of both the first filter tank and the second filter tank, and drain pipes are fixedly connected to the bottoms of both the first filter tank and the second filter tank. The drain pipe of the first filter tank is communicated with the feed pipe of the second filter tank. Liquid pumps are connected to the ends of the feed pipe of the first filter tank and the drain pipe of the second filter tank. Sewage is pumped in through the liquid pumps, and the sewage is injected from above the first filter tank through the feed pipe and drawn out from the bottom of the first filter tank using the drain pipe. The adsorption material is filled in the tank, so that the incoming wastewater can pass through the adsorption material from top to bottom to ensure the filtering effect. The liquid pump at the end of the drain pipe is used to suck the sewage at the bottom of the second filter tank to ensure that the sewage entering the third circulation filtration module can be discharged into it constantly and powerfully.

[0007] Preferably, the third circulation filtration module further includes a support frame for supporting the reverse osmosis filter cylinders. The support frame is provided with a hollow structure. A plurality of the reverse osmosis filter cylinders are arranged vertically and equidistantly. A water injection pipe is fixedly connected between the input ends of the plurality of reverse osmosis filter cylinders. The reflux tank is communicated with the water injection pipe. The water injection pipe is connected to the drain pipe of the second filter tank through a connecting pipe. The plurality of reverse osmosis filter cylinders are horizontally supported by the support frame. The sewage at the bottom of the second filter tank is injected into the water injection pipe through the liquid pump and the connecting pipe. The water injection pipe evenly injects the sewage into the plurality of reverse osmosis filter cylinders. The reflux tank is communicated with the water injection pipe, and a one-way valve is installed at the communicating part. In this way, the reflux tank can circulate and inject the sewage into the reverse osmosis filter cylinders, and the sewage in the connecting pipe will not enter the reflux tank.

[0008] Preferably, a plurality of contact electrodes are installed inside the micro-electrolysis tank. The contact electrodes are arranged vertically, and the length direction of the contact electrodes is parallel to the water flow direction. The plurality of contact electrodes are arranged linearly and equidistantly. Through the plurality of parallel contact electrodes, the sewage passing through the micro-electrolysis tank can be fully electrolyzed to generate the required bactericidal active substances, and at the same time, the sewage and the active substances can be fully mixed to improve the purification quality.

[0009] Preferably, a current-limiting tank is installed between the micro-electrolysis tank and the central pipe. A current-limiting valve is installed on the outer side of the current-limiting tank. The output end of the current-limiting valve is communicated with the micro-electrolysis tank. Since the purified water generated by the third circulation filtration module does not have a constant flow rate, the current-limiting tank receives the purified water, and then the current-limiting valve discharges the purified water into the micro-electrolysis tank at a constant rate. In this way, the micro-electrolysis tank can always work at a constant power, and at the same time ensure that the active substances released into the purified water are always appropriate, further improving the purification effect.

[0010] Preferably, an atomizing nozzle is arranged near the top inside the mixing tank. The atomizing nozzle has two input ends. One input end is used for injecting air flow, and the other input end is used for injecting liquid. The output end of the corona ozone generator is communicated with the atomizing nozzle. The output end of the micro-electrolysis tank is communicated with the atomizing nozzle. The atomizing nozzle adopts the two-fluid atomization method. By injecting the purified water and ozone into the atomizing nozzle at the same time, the liquid is atomized into fine droplets by the high-speed air flow. An air flow pump is installed at the output end of the corona ozone generator to control the output and flow rate of ozone. In this way, fine water mist and ozone are ejected from the end of the atomizing nozzle, which not only greatly increases the contact surface between the purified water and ozone, improves the purification effect, but also the purified water has been impacted by the ozone air flow before atomization, further improving the contact between ozone and purified water, and ensuring the quality of the final drinking water.

[0011] Preferably, there are multiple atomizing nozzles. The multiple atomizing nozzles are arranged at equal intervals in a ring shape, and the output ends of the atomizing nozzles are inclined downward. The multiple atomizing nozzles are arranged in a ring shape, and the output ends of the atomizing nozzles are inclined downward, so that the downward ejected water mist directly collides with each other, assisting the mixing of the water body and improving the mixing effect of ozone and purified water.

[0012] Preferably, there are multiple atomizing nozzles. The multiple atomizing nozzles are grouped in pairs. The two atomizing nozzles in each group are arranged oppositely. A flat nozzle is installed at the end of the atomizing nozzle. After the spray is ejected from the atomizing nozzles arranged oppositely in pairs, the sprays will collide with each other. Since the spray of the traditional atomizing spray is generally diffused, when the two sprays collide with each other, the blending effect is poor. By setting the flat nozzle, the diffused spray ejected from the atomizing nozzle can be concentrated towards the central flat outlet first. During the concentration process, the sprays will collide with each other in the flat nozzle, increasing the gas-liquid mixing effect. At the same time, the spray ejected from the flat nozzle is flat, and the atomizing nozzle is arranged inclined downward. The two opposite flat sprays will form a curtain wall, and the two curtain walls will collide with each other, ensuring the effect of the sprays colliding with each other, further improving the mixing effect of ozone and purified water, and thus ensuring the purification effect of ozone on the water body.

[0013] Preferably, a speed reduction motor is fixedly connected to the top of the mixing tank, and the output end of the speed reduction motor is fixedly connected to a stirring rod. The stirring rod is located inside the mixing tank. The speed reduction motor drives the stirring rod to rotate, slowly driving the purified water in the mixing tank to rotate, so that the purified water is mixed with the active substances generated by ozone and micro-electrolysis. The purified water at the bottom is continuously output as purified drinking water.

[0014] Preferably, a multi-way pipe is fixedly connected to the output end of the micro-electrolysis tank. The multiple output ends of the multi-way pipe are communicated with the air flow input ends of multiple atomizing nozzles. The water passing through the micro-electrolysis tank is equally divided through the multi-way pipe and injected into the multiple atomizing nozzles for atomization work.

[0015] Preferably, a pressure gauge is installed in the middle of the feed pipe, and feeding windows are installed on the top surfaces of the first filtration tank and the second filtration tank. The pressure gauge is used to monitor the water pressure in the feed pipe to reduce potential safety hazards. The feeding windows are used to fill the adsorption materials into the first filtration tank and the second filtration tank. Discharge windows are provided at the bottoms of the first filtration tank and the second filtration tank for discharging the adsorption materials.

[0016] The beneficial effects of the present invention are as follows: 1. For the direct drinking water circulation purification device of the present invention, through the settings of the first filtration tank, the second filtration tank, and the third circulation filtration module, when sewage passes through, large particle substances such as rust and sediment in the sewage can be filtered and adsorbed, and macromolecular organic substances in the sewage can also be effectively adsorbed; then the sewage enters the third circulation filtration module and passes through the reverse osmosis filtration cylinder. After the sewage enters the reverse osmosis filtration cylinder, water molecules will continuously pass through the membrane and be discharged into the central pipe through the purified water output end, while substances such as ions and small particle organic substances will be isolated on the other side of the membrane, forming sewage with a higher pollution concentration. The sewage will be discharged from the sewage pipe through the wastewater output end. The sewage discharged from the sewage pipe will enter the reflux tank. The reflux tank is equipped with a water pump for injecting the sewage discharged from the reverse osmosis filtration cylinder and new sewage into the reverse osmosis filtration cylinder together for cyclic filtration and purification. This can not only ensure that the third circulation filtration module can stably discharge purified water, but also the sewage will be purified multiple times.

[0017] 2. In a direct drinking water circulation purification device according to the present invention, the purified water is passed into a microelectrolysis tank. The microelectrolysis tank utilizes the electrolysis effect under a low-voltage direct current state to generate various active substances in the water, which have a significant killing effect on common pathogenic bacteria such as Escherichia coli, Staphylococcus aureus, Vibrio cholerae, etc., ensuring the hygienic safety of the drinking water. At the same time, the active substances generated during the electrolysis process can remain in the water for a certain period of time, having the ability of continuous disinfection. The water purified by the microelectrolysis tank is passed into a mixing tank. The corona ozone generator uses a high-voltage electric field to decompose and recombine oxygen molecules in the air into ozone, and discharges the ozone into the mixing tank to mix with the purified water. Ozone is a stronger oxidant and can kill microorganisms such as bacteria, viruses, and algae in the water more quickly and thoroughly. Through the mutual cooperation of ozone and the active substances of microelectrolysis, harmful substances to the human body in the sewage can be effectively and quickly killed to make the water quality meet the standards. At the same time, the active substances of microelectrolysis have a long retention time, so that the direct drinking water remains in a sterile state for a long time after purification. At the same time, when ozone is used for purification alone, a relatively high concentration of ozone needs to be used. Although ozone will decompose by itself at room temperature and will not remain in the water, it has certain toxicity. If the concentration is too high during use, it is easy to pollute the operation area. However, when combined with microelectrolysis, a lower concentration of ozone can be used for the purification work, greatly reducing safety problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is the first perspective three-dimensional view of the present invention; Figure 2 is the second perspective three-dimensional view of the present invention; Figure 3 is the three-dimensional view of the first filter tank and the second filter tank of the present invention; Figure 4 is the three-dimensional view of the third circulation filtration module of the present invention; Figure 5 is the three-dimensional view of the flow-limiting tank and the mixing tank of the present invention; Figure 6 is the three-dimensional view of the microelectrolysis tank of the present invention; Figure 7 is the three-dimensional view of the mixing tank of the present invention; Figure 8 is the cross-sectional view of the mixing tank of the present invention; Figure 9 is the three-dimensional view of the atomizing nozzle of the present invention.

[0020] In the figure: 1. First filtration tank; 2. Second filtration tank; 3. Mixing tank; 4. Flow-limiting tank; 5. Third circulation filtration module; 6. Return tank; 7. Micro-electrolysis tank; 8. Feeding window; 9. Liquid pump; 10. Feed pipe; 11. Pressure gauge; 12. Drain pipe; 14. Support frame; 15. Reverse osmosis filtration cartridge; 16. Centralized pipe; 17. Connecting pipe; 18. Water injection pipe; 19. Sewage pipe; 20. Flow-limiting valve; 21. Corona ozone generator; 22. Reduction motor; 23. Multi-way pipe; 24. Contact electrode; 25. Atomizing nozzle; 26. Stirring rod; 27. Flat nozzle. Detailed implementation manner

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0022] As Figures 1 to 8 shown, a direct drinking water circulation purification device according to an embodiment of the present invention includes a first filtration tank 1 and a second filtration tank 2. The output end of the first filtration tank 1 is communicated with the input end of the second filtration tank 2. Adsorption fillers are filled in both the first filtration tank 1 and the second filtration tank 2. The output end of the second filtration tank 2 is connected to a third circulation filtration module 5. The third circulation filtration module 5 includes a plurality of reverse osmosis filtration cartridges 15. The reverse osmosis filtration cartridges 15 have a purified water output end and a wastewater output end. A centralized pipe 16 is fixedly connected between the plurality of purified water output ends, and a sewage pipe 19 is fixedly connected between the plurality of wastewater output ends. One side of the sewage pipe 19 is connected to a return tank 6. The return tank 6 is communicated with the plurality of reverse osmosis filtration cartridges 15. The output end of the centralized pipe 16 is provided with a micro-electrolysis tank 7. The output end of the micro-electrolysis tank 7 is provided with a mixing tank 3. A corona ozone generator 21 is fixedly connected to one side of the top of the mixing tank 3; The sewage to be purified is passed through the first filtration tank 1 and the second filtration tank 2. The adsorption filler in the first filtration tank 1 can be quartz sand filler, which can filter and adsorb large particulate matters such as rust and sediment in the sewage when the sewage passes through. Then the sewage enters the second filtration tank 2, and the adsorption filler in the second filtration tank 2 can be activated carbon, which can effectively adsorb macromolecular organic matters in the sewage. After that, the sewage enters the third circulation filtration module 5 and passes through the reverse osmosis filtration cylinder 15. The reverse osmosis filtration cylinder 15 is internally provided with a cylindrical RO reverse osmosis filter element. After the sewage enters the reverse osmosis filtration cylinder 15, water molecules will continuously pass through the membrane and be discharged into the central pipe 16 through the purified water output end, while substances such as ions and small particulate organic matters will be isolated on the other side of the membrane, forming sewage with a higher pollution concentration. The sewage will be discharged from the sewage pipe 19 through the wastewater output end. The sewage discharged from the sewage pipe 19 will enter the reflux tank 6. The reflux tank 6 is internally provided with a water pump for injecting the sewage discharged from the reverse osmosis filtration cylinder 15 and new sewage into the reverse osmosis filtration cylinder 15 together for circulating filtration and purification. In this way, not only can it ensure that the third circulation filtration module 5 can stably discharge purified water, but also the sewage will be purified multiple times. It should be noted that always maintaining the inflow of external sewage will cause the pollution degree of the sewage in the sewage pipe 19 to gradually increase, and at the same time, the amount of purified water discharged from the central pipe 16 will decrease. After a period of time, it is necessary to discharge all the sewage in the reflux tank 6 to reduce the load on the reverse osmosis filtration cylinder 15. At this time, it is meaningless to purify the high-concentration sewage again, and it is best to discharge it directly. There are still many bacteria and other substances remaining in the purified water. The purified water is passed through the micro-electrolysis tank 7. The micro-electrolysis tank 7 will utilize the electrolysis effect under low-voltage DC conditions to generate various active substances in the water, such as hydrogen peroxide and hydroxide ions, which can effectively kill various bacteria, viruses, algae and other microorganisms, and have a significant killing effect on common pathogenic bacteria such as Escherichia coli, Staphylococcus aureus and Vibrio cholerae, ensuring the hygienic safety of drinking water, without adding chemical agents and without generating harmful residues. At the same time, the active substances generated during the electrolysis process can remain in the water for a certain period of time and have the ability of continuous disinfection. However, relatively speaking, the active substances generated by micro-electrolysis still cannot kill some difficult-to-treat substances, such as common molds and viruses in wastewater. The protein shell and nucleic acid and other components on the surface of the virus are resistant to the oxidation substances generated by micro-electrolysis, and the mycelium and spores of molds have strong stress resistance, and the oxidation substances generated by micro-electrolysis are difficult to completely penetrate into the interior of the mycelium of molds.The water purified by the micro-electrolysis tank 7 is passed into the mixing tank 3. The corona ozone generator 21 uses a high-voltage electric field to decompose and recombine oxygen molecules in the air into ozone, and discharges the ozone into the mixing tank 3 to mix with the purified water. Ozone is a stronger oxidant that can kill microorganisms such as bacteria, viruses, and algae in water more quickly and thoroughly. For viruses, ozone can directly act on the protein shell and nucleic acid of the virus, destroying its structure and making it lose its activity. For molds, it can destroy the cell wall and cell membrane of the molds, resulting in the death of mold cells. By the mutual cooperation of the active substances of ozone and micro-electrolysis, the harmful substances to the human body in the sewage can be effectively and quickly killed, making the water quality meet the standards. At the same time, the active substances of micro-electrolysis have a long retention time, so that the direct drinking water remains sterile for a long time after purification. At the same time, when ozone is used for purification alone, a relatively high concentration of ozone is required. Although ozone will decompose by itself at room temperature and will not remain in the water, it is toxic to a certain extent. If the concentration is too high during use, it is easy to pollute the operation area. After combining with micro-electrolysis, a lower concentration of ozone can be used for purification work, greatly reducing safety problems.

[0023] Feeding pipes 10 are connected to the tops of both the first filtration tank 1 and the second filtration tank 2, and drain pipes 12 are fixedly connected to the bottoms of both the first filtration tank 1 and the second filtration tank 2. The drain pipe 12 of the first filtration tank 1 is communicated with the feeding pipe 10 of the second filtration tank 2. Liquid pumps 9 are connected to the ends of the feeding pipe 10 of the first filtration tank 1 and the drain pipe 12 of the second filtration tank 2. During operation, sewage is pumped in through the liquid pump 9, and the sewage is injected from above the first filtration tank 1 through the feeding pipe 10, and the filtered water is pumped out from the bottom of the first filtration tank 1 using the drain pipe 12. The adsorption material is filled in the tank, so that the incoming wastewater can pass through the adsorption material from top to bottom to ensure the filtration effect. The liquid pump 9 at the end of the drain pipe 12 is used to suck the sewage at the bottom of the second filtration tank 2 to ensure that the sewage entering the third circulation filtration module 5 can be discharged into it constantly and powerfully.

[0024] The third circulation filtration module 5 further includes a support frame 14 for supporting the reverse osmosis filtration cylinder 15. The support frame 14 is provided with a hollow structure. A plurality of the reverse osmosis filtration cylinders 15 are arranged vertically and equidistantly. A water injection pipe 18 is fixedly connected between the input ends of the plurality of reverse osmosis filtration cylinders 15. The reflux tank 6 is communicated with the water injection pipe 18. The water injection pipe 18 is connected to the drain pipe 12 of the second filtration tank 2 through a communicating pipe 17. During operation, the plurality of reverse osmosis filtration cylinders 15 are horizontally supported by the support frame 14. The sewage at the bottom of the second filtration tank 2 is injected into the water injection pipe 18 through the liquid pump 9 and the communicating pipe 17. The water injection pipe 18 evenly injects the sewage into the plurality of reverse osmosis filtration cylinders 15. The reflux tank 6 is communicated with the water injection pipe 18, and a one-way valve is installed at the communicating part. In this way, the reflux tank 6 can circularly inject the sewage into the reverse osmosis filtration cylinder 15, and the sewage in the communicating pipe 17 will not enter the reflux tank 6.

[0025] A plurality of contact electrodes 24 are installed inside the micro-electrolysis tank 7. The contact electrodes 24 are arranged vertically, and the length direction of the contact electrodes 24 is parallel to the water flow direction. The plurality of contact electrodes 24 are arranged linearly and equidistantly. During operation, through the plurality of parallel contact electrodes 24, the sewage passing through the micro-electrolysis tank 7 can be fully electrolyzed to generate the required bactericidal active substances, and at the same time, the sewage and the active substances can be fully mixed, improving the purification quality.

[0026] A flow-limiting tank 4 is installed between the micro-electrolysis tank 7 and the central pipe 16. A flow-limiting valve 20 is installed on the outer side of the flow-limiting tank 4. The output end of the flow-limiting valve 20 is communicated with the micro-electrolysis tank 7. During operation, since the purified water generated by the third circulation filtration module 5 is not a constant flow rate, the flow-limiting tank 4 receives the purified water, and then the flow-limiting valve 20 discharges the purified water into the micro-electrolysis tank 7 at a constant rate. In this way, the micro-electrolysis tank 7 can always work at a constant power, and at the same time, ensure that the active substances released into the purified water are always appropriate, further improving the purification effect.

[0027] An atomizing nozzle 25 is provided near the top inside the mixing tank 3. The atomizing nozzle 25 has two input ends. One input end is used for injecting air flow, and the other input end is used for injecting liquid. The output end of the corona ozone generator 21 is communicated with the atomizing nozzle 25, and the output end of the micro-electrolysis tank 7 is communicated with the atomizing nozzle 25. During operation, the atomizing nozzle 25 adopts the two-fluid atomization method. By injecting purified water and ozone into the atomizing nozzle 25 at the same time, the liquid is atomized into fine droplets by the high-speed air flow; an air flow pump is installed at the output end of the corona ozone generator 21 to control the output and flow rate of ozone. In this way, the fine water mist and ozone are ejected from the end of the atomizing nozzle 25, which not only greatly increases the contact area between the purified water and ozone, improves the purification effect, but also the purified water has been impacted by the ozone air flow before atomization, further improving the contact between ozone and purified water and ensuring the quality of the final direct drinking water.

[0028] There are multiple atomizing nozzles 25. The multiple atomizing nozzles 25 are arranged at equal intervals in a ring shape, and the output ends of the atomizing nozzles 25 are inclined downward. During operation, the multiple atomizing nozzles 25 are arranged in a ring shape, and combined with the downward inclination of the output ends of the atomizing nozzles 25, the downward ejected water mist directly collides with each other, assisting the mixing of the water body and improving the mixing effect of ozone and purified water.

[0029] There are multiple atomizing nozzles 25. The multiple atomizing nozzles 25 are grouped in pairs. The two atomizing nozzles 25 in each group are arranged oppositely, and the extension lines of their outlets intersect inside the mixing tank 3. A flat nozzle 27 is installed at the end of the atomizing nozzle 25; during operation, after the atomizing nozzles 25 arranged oppositely spray, the sprays will collide with each other. Since the spray of the traditional atomizing nozzle 25 is generally diffused, the blending effect is poor when the two sprays collide with each other. Through the setting of the flat nozzle 27, the diffused spray ejected from the atomizing nozzle 25 can be concentrated towards the central flat outlet first. During the concentration process, the sprays will collide with each other in the flat nozzle 27, increasing the gas-liquid mixing effect. At the same time, the spray ejected from the flat nozzle 27 is flat, and the atomizing nozzle 25 is arranged obliquely downward. The two opposite flat sprays will form a curtain wall, and the two curtain walls will collide with each other, ensuring the effect of the sprays colliding with each other, further improving the mixing effect of ozone and purified water, and thus ensuring the purification effect of ozone on the water body.

[0030] A reduction motor 22 is fixedly connected to the top of the mixing tank 3. The output end of the reduction motor 22 is fixedly connected with a stirring rod 26. The stirring rod 26 is located inside the mixing tank 3. During operation, the reduction motor 22 drives the stirring rod 26 to rotate, slowly driving the purified water in the mixing tank 3 to rotate, so that the purified water is mixed with ozone and the active substances generated by micro-electrolysis, and the purified water at the bottom is continuously output as the purified direct drinking water.

[0031] The output end of the micro-electrolysis tank 7 is fixedly connected with a multi-way pipe 23, and the multiple output ends of the multi-way pipe 23 are communicated with the air flow input ends of multiple atomizing nozzles 25. During operation, the water passing through the micro-electrolysis tank 7 is equally divided through the multi-way pipe 23 and injected into the multiple atomizing nozzles 25 for atomization work.

[0032] A pressure gauge 11 is installed in the middle of the feed pipe 10, and feeding windows 8 are installed on the top surfaces of the first filter tank 1 and the second filter tank 2. During operation, the pressure gauge 11 is used to monitor the water pressure in the feed pipe 10 to reduce potential safety hazards. The feeding windows 8 are used to fill the inside of the first filter tank 1 and the second filter tank 2 with adsorption materials. Discharge windows are provided at the bottoms of the first filter tank 1 and the second filter tank 2 for discharging the adsorption materials.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A direct drinking water circulation purification device, characterized in that: It includes a first filter tank and a second filter tank. The output end of the first filter tank is communicated with the input end of the second filter tank. Adsorption fillers are filled inside both the first filter tank and the second filter tank. The output end of the second filter tank is connected with a third circulation filtration module. The third circulation filtration module includes a plurality of reverse osmosis filtration cylinders. Each reverse osmosis filtration cylinder has a purified water output end and a wastewater output end. A central pipe is fixedly connected between the plurality of purified water output ends, and a sewage pipe is fixedly connected between the plurality of wastewater output ends. One side of the sewage pipe is connected with a reflux tank, and the reflux tank is communicated with the plurality of reverse osmosis filtration cylinders. The output end of the central pipe is provided with a microelectrolysis tank, and the output end of the microelectrolysis tank is provided with a mixing tank. A corona ozone generator is fixedly connected to one side of the top of the mixing tank; An atomizing nozzle is arranged on the inner side near the top of the mixing tank. The atomizing nozzle has two input ends. One input end is used for injecting air flow, and the other input end is used for injecting liquid. The output end of the corona ozone generator is communicated with the atomizing nozzle, and the output end of the microelectrolysis tank is communicated with the atomizing nozzle.

2. The direct drinking water circulation purification device according to claim 1, characterized in that: There are a plurality of atomizing nozzles. The plurality of atomizing nozzles are arranged at equal intervals in a ring shape, and the output end of the atomizing nozzle inclines downward.

3. A direct drinking water circulation purification device according to claim 1, characterized in that: There are a plurality of atomizing nozzles. The plurality of atomizing nozzles are grouped in pairs. The two atomizing nozzles in each group are arranged oppositely, and the extension lines of their outlets intersect inside the mixing tank. A flat nozzle is installed at the end of the atomizing nozzle.

4. The direct drinking water circulation purification device according to claim 3, characterized in that: Feeding pipes are connected to the tops of both the first filter tank and the second filter tank. Drain pipes are fixedly connected to the bottoms of both the first filter tank and the second filter tank. The drain pipe of the first filter tank is communicated with the feeding pipe of the second filter tank. Liquid pumps are connected to the ends of the feeding pipe of the first filter tank and the drain pipe of the second filter tank.

5. The direct drinking water circulation purification device according to claim 4, wherein: The third circulation filtration module further includes a support frame for supporting the reverse osmosis filtration cylinders. The support frame is arranged in a hollow manner. The plurality of reverse osmosis filtration cylinders are arranged at equal intervals vertically. A water injection pipe is fixedly connected between the input ends of the plurality of reverse osmosis filtration cylinders. The reflux tank is communicated with the water injection pipe. The water injection pipe is connected with the drain pipe of the second filter tank through a connecting pipe.

6. The direct drinking water circulating purification device according to claim 5, wherein: A plurality of contact electrodes are installed inside the microelectrolysis tank. The contact electrodes are arranged vertically, and the length direction of the contact electrodes is parallel to the water flow direction. The plurality of contact electrodes are arranged at equal intervals linearly.

7. The direct drinking water circulating purification device according to claim 6, characterized in that: A current-limiting tank is installed between the microelectrolysis tank and the central pipe. A current-limiting valve is installed on the outside of the current-limiting tank. The output end of the current-limiting valve is communicated with the microelectrolysis tank.

8. The direct drinking water circulation purification device according to claim 7, characterized in that: A reduction motor is fixedly connected to the top of the mixing tank. The output end of the reduction motor is fixedly connected with a stirring rod, and the stirring rod is located inside the mixing tank.

9. The direct drinking water circulating purification device according to claim 8, characterized in that: The output end of the microelectrolysis tank is fixedly connected with a multi-way pipe. The plurality of output ends of the multi-way pipe are communicated with the air flow input ends of the plurality of atomizing nozzles.

10. A direct drinking water circulation purification device according to claim 9, characterized in that: A pressure gauge is installed in the middle of the feeding pipe. Feeding windows are installed on the top surfaces of both the first filter tank and the second filter tank.

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