106results about How to "Ensure drinking water safety" patented technology

The invention relates to a boiled water machine / a hot water device. The functions of a boiled water machine and a hot water device are organically combined into a whole so as to avoid repeated investment. Firstly, water is preheated to drinking water of 90 DEG C and hot water of 60 DEG C respectively through a drinking water heating cup and a hot water heating cup; secondly, the drinking water of 90 DEG C is unidirectionally guided out from the drinking water heating cup to a drinking water valve through utilizing a parallel check valve in a water outlet of the drinking water heating cup and the hot water heating cup, thereby realizing the function of the boiled water machine; or the drinking water of 90 DEG C and hot water of 60 DEG C are guided out in parallel from the drinking water heating cup and the hot water heating cup to a cold / hot water mixing valve and are mixed into hot water of 70 DEG C, thereby realizing the function of the hot water device.

The invention discloses an activated-water hydrogen production material and a preparation method thereof. The activated-water hydrogen production material sequentially comprises the following components by weight: 45-50 parts of component A, 20-25 parts of component B, and 15-20 parts of component C, wherein the component A comprises the following components by weight: 35 parts of copper powder, 35 parts of zinc powder and 20 parts of magnesium powder; the component B comprises a plurality of magnesium particles with the diameter of 1-5mm; and the component C comprises the following components by weight: 35-40 parts of tourmaline, 5-20 parts of purified ore and 15-20 parts of pottery clay. The component A is a spheroid formed by melting at high temperature, cooling and supporting; and the component C is a spheroid formed by crushing and kneading. The invention has the advantages that fluorine and heavy metals in water can be removed, and the growth of bacteria in the water is suppressed.

The invention provides a reservoir water quality predicating system and a method thereof. The system comprises the components of a water quality monitoring device which monitors water quality index monitoring data and algae growth characteristic data of a monitoring point; a water quality predicating device which receives the water quality index monitoring data and the algae growth characteristicdata, performs analysis on the water quality index monitoring data and the algae growth characteristic data, obtains a reservoir water quality predicating model and performs predication on the water quality of a to-be-predicated reservoir according to the water quality index monitoring data, the algae growth characteristic data and the reservoir water quality predicating model, thereby obtaining predicating data; an early-warning grading device which receives the predicating data, determines a target early-warning grade according to the predicating data, and displays the target early-warning grade. The reservoir water quality predicating system can predicate the water quality of the to-be-predicated reservoir and can perform early warning before an algal booming event, thereby reminding related personnel of taking a countermeasure in advance, facilitating reservoir water quality management, and settling a technical problem of hysteresis in reservoir detection.

The invention relates to a preparation method of a bone char fluoride removal agent loaded with aluminium ions, belonging to the field of drinking water fluoride removal treatment. In the method, bone char of certain mass is put into an aluminium salt solution of certain volume; the mixture of the bone char and the aluminium salt solution is oscillated for certain time under certain condition; the bone char is taken out, washed by clear water and dried under room temperature. The mass ratio between the bone char and the aluminium salt solution is 1:8-1:12. The condition of the oscillation is as follows: the bone char and the aluminium salt solution is fully mixed in the process of oscillation, the time of oscillation is not less than 24h, the temperature of the mixture is kept at 20-40 DEG C during oscillation. Batch adsorption tests show that the adsorption capacity of the aluminium-loaded bone char fluoride removal agent is 60% higher than that of ordinary bone char fluoride removal agents. Used in the areas taking high-fluoride ground water as drinking water resource, the fluoride removal agent can effectively ensure the residents with drinking water safety, reduce the cost for producing water and the workload of daily maintenance of water supply engineering simultaneously.

The invention discloses a method of processing magnet tailings by utilizing a soil curing agent. The method comprises following steps: evenly mixing the soil curing agent and magnet tailings, adding a proper amount of cementing material, controlling the mass percentages of the components as follows: 0.01 to 0.5% of soil curing agent, and 1 to 15% of cementing material, the balance being magnet tailings, and preparing the mixture mentioned above into a composite material. A recyclable composite material can be formed according to the method, can be applied to road construction and production of baking-free bricks, has the advantages of saving energy and protecting environment, and has important meanings on promoting technology innovation and structural adjustment of construction industry and traffic road building and transformation of economic growth pattern.

The invention relates to a production method for enamel ductile cast iron pipe, particularly suitable for producing ductile cast iron water supply pipe with flange; the invention aims to extend the service life of the enamel ductile cast iron pipe, beautify the appearance, and make the enamel ductile cast iron pipe non-toxic and sterile. The method comprising the following steps: soaking cleaning with aulfuric acid solution and then drying; preparing ground coat and surface glaze respectively to spraying, putting a ductile cast iron pipe into a enamel stove, and tapping after high-temperature sintering; and naturally cooling.

The invention belongs to the technical field of a water treatment membrane and provides a direct drinking water treatment membrane containing a graphene micro-sheet as well as a preparation method thereof. The method comprises the following steps: performing interfacial polymerization on the surface of a porous ceramic substrate through m-phenylenediamine and trimesoyl chloride to generate a polyamide desalination layer, sequentially coating a polyacrylamide adhesive, depositing the graphene micro-sheet, coating the polyacrylamide adhesive and depositing the graphene micro-sheet, and performing laser drying and curing to prepare the direct drinking water treatment membrane. Compared with the traditional method, the preparation method has the following advantages: in the direct drinking water treatment membrane prepared by the method, the graphene micro-sheet is fixed on the treatment membrane in an initial state by the polyacrylamide adhesive, so that high specific surface area and excellent adsorbing and purifying capabilities of the graphene micro-sheet are guaranteed; and when the direct drinking water treatment membrane is applied treatment of direct drinking water, each layerof the treatment membrane with a multi-layer composite structure is synergistically purified and adsorbed, and a large amount of nanoscale impurities in the water can be adsorbed, so that drinking water safety is guaranteed.

The invention provides a dust monitoring method and system based on a narrowband internet of things, and belongs to the technical field of dust monitoring. By adoption of the apparatus and method provided by the invention, the intelligent collection and analysis of dust concentration data of tens of thousands of monitoring target locations within a large monitoring range can be realized, measurement results are finally output to find the target monitoring position where the dust concentration exceeds a safety range and trigger the alarm, meanwhile alarm information is fed back to a user, and the alarm information comprises the position of the target detection point that the user needs to process, the dust concentration data of the target monitoring point and the index beyond the normal range. According to the alarm information, the user can take corresponding measures to deal with each monitoring point in time to avoid unnecessary damage caused by dust explosion or to avoid serious environmental impact caused by the dust.

The invention provides a method and a device for establishing a reservoir water quality prediction model. The method comprises the following steps: obtaining water quality index monitoring data and algae growth characteristic data; performing fitting analysis on each water quality index monitoring data and algae growth characteristic data, determining main influence factors and multivariate nonlinear models of a to-be-detected reservoir; analyzing a fitting analysis result and the water quality index monitoring data using SPSS to obtain a parameter estimation value, thereby obtaining a first prediction model and a second prediction model; and determining an optimal model in the first prediction model and the second prediction model, using the optimal model as a reservoir water quality prediction model so as to predict the water quality of the to-be-detected reservoir. According to the method, the reservoir water quality prediction model can be obtained, the water quality of the to-be-detected reservoir can be predicted through the reservoir water quality prediction model, early warning can be given to prompt the relevant personnel to take countermeasures in advance, and the technical problem that the hysteresis property exists in the detection for the reservoir at present is alleviated.

An aeration type micropore ceramic water purification apparatus comprises a raw water tank, a powder water processing material, micropore ceramics, a lower shell, a water storage bag, an air pump and a water pump. Micropore ceramics and a gas distributing apparatus are arranged on the bottom of the raw water tank. The powder water processing material is arranged in the raw water tank. The raw water tank is above the lower shell. The water storage bag is in the lower shell. The air outlet of the air pump communicates with an intake port of the gas distributing apparatus via an intake tube. An aeration hole is arranged on the gas distributing apparatus. A lower water outlet joint is arranged on the bottom of the water purification apparatus. The lower water outlet joint communicates with a water outlet of the micropore ceramics, the water storage bag and an water inlet of the water pump. The water outlet of the water pump communicates with an upper water outlet joint at the middle or the upper part of the water purification apparatus via a drainage pipe.

The invention relates to an organic fertilizer converted by waste silkworm faeces and a production method of the organic fertilizer. The production method comprises the steps of spreading the silkworm faeces to a spreading height of 10-15cm, mixing grenadine syrup with a weight percentage of 10%, lactic acid bacteria and yeast in the proportion of (250-350): (40-60):1, obtaining fermentation liquid after uniform stirring, uniformly spraying the fermentation liquid on the spread silkworm faeces till the silkworm faeces are wet through exactly, spreading a layer of silkworm faeces to a spreading height of 10-15cm again on the sprayed silkworm faeces, uniformly spraying the fermentation liquid till the silkworm faeces are wet through exactly, treading down, covering a film on the silkworm faeces, keeping for 15-30 days, turning, covering with a film for 10-15 days again, adding phosphorus and potassium to the silkworm faeces, with a weight ratio of silkworm faeces, phosphorus and potassium of 100:(3-6):(1-4), pelleting, drying, bagging, and then obtaining a finished product. The waste silkworm faeces are converted into the environment-friendly organic fertilizer, so that the problem that the silkworm faeces pollute the environment can be solved, endogenesis hormone secretion of plants can be stimulated, the tillering capacity of plant cells is high, the effective stems are more, the crop planting requires no nitrogenous fertilizer for prompting growth, and the quality is good.

The invention provides a direct drinking water production water supply process and a direct drinking water system, and belongs to the technical field of residential infrastructure. The direct drinkingwater production water supply process adopts the direct drinking water system and includes the following steps that a, raw water is delivered into the direct drinking water system for pretreatment including filtration, softening and chemical treatment; b, the raw water after pretreatment is subjected to membrane treatment including microfiltration, ultrafiltration, nanofiltration and reverse osmosis treatment; c, the raw water after membrane treatment is subjected to aftertreatment including disinfection and water quality adjustment. The direct drinking water system which is used in the direct drinking water production water supply process is convenient to use and high in purification efficiency and can achieve the effect that direct drinking water is centralizedly supplied to residents through pipelines.

The invention relates to the purified water industry, in particular to a barreled purified drinking water machine. The invention discloses a sterilizing and water supplying method of the purified drinking water machine, which comprises a water supply pipeline, an ultraviolet sterilizer for sterilizing and a power supply derivation device for controlling derivation output. The ultraviolet sterilizer is positioned in the water supply pipe, and an input driving circuit of the ultraviolet sterilizer is connected with the derivation device. The invention can sterilize purified drinking water secondarily, avoid the secondary pollution of purified water and ensure the drinking safety.

The invention relates to the field of water processing equipment, and particularly relates to a filling water quality remote monitoring device and a system. The GPRS-based filling water quality remote monitoring device comprises a receiving module, a data analysis module, and an alarming module, wherein the receiving module is used for receiving in-tank water quality index data acquired by a data acquisition terminal arranged in a water tank; the data analysis module is used for comparing and analyzing the water quality index data and a set standard value to determine whether the in-tank water quality data reach the standard; and the alarming module is used for giving an alarm if the water quality data exceed the standard and not giving an alarm if the water quality data reach the standard. According to the GPRS-based filling water quality remote monitoring device and the system provided by the invention, the filling water quality data can be monitored remotely and in real time, a manager can perform water quality contorl conveniently, whether the in-tank water quality meets the standard is monitored in real time, the manager can be informed to take corresponding measures timely, and safety water drinking by residents is ensured.

The invention discloses an environment-friendly faucet structure which comprises a faucet body. A valve base and a valve element are arranged inside the faucet body. A water outlet bent pipe is connected to the upper portion of the faucet body. A water inlet threaded pipe is connected to the lower portion of the faucet body. The environment-friendly faucet structure is characterized in that the water outlet bent pipe comprises an outer-layer stainless steel pipe and an inner-layer water outlet plastic pipe, and the water inlet threaded pipe comprises an outer-layer threaded copper pipe and an inner-layer water inlet plastic rubber coating pipe. The environment-friendly faucet structure is simple, convenient and fast to produce and capable of effectively avoiding the problem that heavy metal exceeds the standard, and therefore the domestic drinking water security is guaranteed.

The invention relates to an aeration type domestic normal-pressured water purifier for treating drinking water, comprising an original water tank, a powdery water treatment material, micro-porous ceramics, a capsid, a water storing bag and an air pump, wherein the bottom of the original water tank is provided with the micropore ceramics and an air distribution device; the powdery water treatment material is placed in the original water tank; the capsid is arranged below the original water tank, and the water storing bag is arranged in the capisd; the yielding water of the micropore ceramics flows into the water storing bag; the air pump is arranged on the shell of the water purifier; the air outlet of the air pump is communicated with the air inlet of the air distribution device through an intake-pipe; and the air distribution device is provided with an aeration hole, and the air flowing out from the aeration hole can be mixed with the original water in the original water tank.

The invention discloses a solar sea water desalting device with variable flow. The sea water desalting device comprises a desalting device, a controller, a solar battery panel, a pipeline, a neutralizing device, a multi-medium filter, a water pump and a base, the solar battery panel is installed on the top of the desalting device, and the controller is inlaid in the outer side of the desalting device; the base is welded to the bottom of the side surface of the desalting device, the multi-medium filter and the water pump are installed on the base, and the water pump is communicated with the multi-medium filter through the pipeline; the multi-medium filter is connected with the desalting device, the desalting device is communicated with the neutralizing device through a water pipe, and the neutralizing device is composed of a shell body, a material box, a pause switch mechanism, an accelerating device, a conveying device, a scraper blade, a one-way transmission device, a moving device, an intermittent transmission device, a water wheel device and the water pipe; the device has the advantages that the neutralizing device is used for neutralizing the desalted sea water, it is avoided that a water supplying system is eroded, and the normal running of the water supplying system and the drinking water safety of people are ensured.

The invention discloses an intelligent automatic unmanned water vender and a running method for the same. The water vender comprises a water vender main body and a control system used to control work of the water vender main body, wherein the water vender main body comprises a raw water inlet, a raw water metering system, a raw water quality detection device, a water quality purification system, a water quality detection system, an ultraviolet sterilization system, a bacteria rapid detection system, an automatic water injection device, a storage cabinet used to store spring water bottle, an automatic bottle fetching device, a sterilization and sealing device and a code scanning water selling outlet. The water vender is applicable to all the public places with crowded people streams; a consumer only needs to make payment by code scanning or insert coins, and then the water vendor will automatically sell safe, clean and cheap drinking water in bottles, so drinking safety of the consumer can be guaranteed. When the spring water bottles in the storage cabinet are used up or water quality abnormity appears, the WiFi module will transmit information to a center network backstage, and a monitor can arrange people for handling in time. Hence, a person can monitor multiple water venders at the same time; and consumption of human resources is reduced.

The invention discloses intelligent household water temperature control equipment. The equipment comprises a shell, a heating water tank is arranged in the shell, a water inlet is formed in one side of the heating water tank, a water outlet is formed in the other side of the heating water tank, a drain valve is connected to the water outlet, a heating pipe is arranged on the lower portion of the heating water tank, the heating pipe is installed in the shell, a cooling water tank is arranged on the upper portion of the heating water tank, and a cooling fan is installed on the inner wall of thetop of the cooling water tank. By designing the cooling water tank, water is heated to be boiled and then subjected to extraction and air cooling, the boiled water obtained after boiling can be cooledrapidly, the water temperature is effectively controlled, and the equipment adapts to the household use requirement better; compared with a traditional filter purified water or barreled pure water, the equipment better conforms to psychological using habits of consumers, labor consuming operation of changing water is omitted, convenience is brought to use, the water tank is arranged inside and integrally designed, and the appearance is attractive.

The invention relates to a device for filtering and removing a phthalate esters organism in water and a filtration method thereof. The technical problem to be solved by the invention is to provide the device with simple structure, low manufacturing cost and stable treatment effect and the filtration method thereof. The device and the method can not greatly affect major elements in the water when the removal of the phthalate esters organism is ensured. The invention adopts the technical proposal for solving the problem that: the device for filtering and removing the phthalate esters organism in the water comprises a raw water tank, wherein, an outlet end of the raw water tank is connected to a booster pump A; the invention is characterized in that an output end of the booster pump A is connected to a 5um wirewound filter element and a 5um micropours film in sequence; an output end of the 5um microporous film is connected with a resin filter column and an active carbon filter column in sequence; an output end of the active carbon filter column is connected to a finished product water tank through a 1um microporous film; and a water outlet end of the finished product water tank is connected to a booster pump B. The device and the method can be used for advance treatment of water quality for urban water supply, thereby removing the phthalate esters organism in urban water.

The invention provides an Internet of Things monitoring system of a water purifier. The system comprises a water purifier, a water flow sensor, a detection plate, a rechargeable battery, a water flowgenerator and a cloud host. The water flow sensor is used for detecting the filtering amount of the water purifier and transmitting a water flow signal to the detection plate, the detection plate transmits the water flow signal to the cloud host through the Internet of Things technology, the cloud host acquires filtering amount data of the water purifier according to the water flow signal and transmits the filtering amount data to an electronic device for a manager to monitor the efficiency and the state of the water purifier, and the cloud host can calculate and judge whether the water purifier needs to replace a water purification filter element or not according to the filtering amount data, and transmits a warning signal to the electronic device to remind the manager in time.

The invention discloses a method for evaluating the transformation sequence of water supply pipelines in old and old urban areas. The method comprises the following steps of acquriing a water supply pipe network topological graph of old and old urban areas; obtaining fault coefficients of the water supply pipelines of different pipe ages; judging the proportion of each risk factor in the risk library; establishing a hydraulic risk assessment model; establishing a water supply network water quality model; establishing a water supply pipeline external influence factor weight model based on a grey theory; establishing a water supply pipeline danger level evaluation model, and grading the danger level of the water supply pipeline; establishing a hydraulic risk assessment model and a water supply network water quality model, and combining fault coefficients of water supply pipelines of different pipe ages, proportions of various risk factors in a risk library and external influence factorsof the water supply pipelines., The water supply pipeline transformation sequence can be scientifically and reasonably formulated, and the method has important practical significance for efficientlyutilizing water supply pipeline transformation funds and guaranteeing the safety of resident drinking water.

The invention provides an intelligent drinking water system based on a cloud platform and used for a dormitory. The intelligent drinking water system comprises a cloud server, an intelligent control end and intelligent water dispensers, wherein the intelligent control end comprises an electronic device allowing mounting of wechat, is used for sending a control command to the cloud server, and allows a user to receive feedback information from the cloud server; the cloud server is used for sending the received control command to a communication module of the corresponding water dispenser, and feeding the information of the communication module of the water dispenser to the intelligent control end; and each intelligent water dispenser mainly comprises the communication module, a control module, a sensor collecting module, a display module and a heating module. For each intelligent water dispenser, an effective queuing mechanism is provided, through the connection between Bluetooth and amobile phone, the real-time and on-site queueing is realized, and thus the water using efficiency of the user is improved. For each intelligent water dispenser, a common boiled water tank is increasedon the basis of a traditional boiled drinking water tank, so that pure water resource is effectively saved, meanwhile, the service life of a filtering device is prolonged to a certain extent, and thereasonable allocation of resources is effectively realized.

The invention discloses a pre-oxidation method based on preparation of hydrogen peroxide through electrolysis of filter-type electrodes. The pre-oxidation method comprises the following steps: step 1,establishing an accurate analysis method; step 2, researching and developing a high-performance negative electrode capable of producing hydrogen peroxide through electrolysis, and a dragnet-type lead-free alloy positive electrode; step 3, developing a Fenton-like reaction catalyst having excellent performance and low cost and applicable to a drinking water environment; and step 4, designing a pre-oxidation water purification apparatus based on preparation of hydrogen peroxide through electrolysis of the filter-type electrodes. The pre-oxidation method based on preparation of hydrogen peroxidethrough electrolysis of the filter-type electrodes replaces conventional treatment manners of pre-oxidation through addition of extra chemical agents, so equipment contamination in a water plant is prevented, water purification effect is improved, the problem that external chemical agent residues and harmful disinfection by-products exceed standards is overcome from the source, and water supply quality and drinking water safety of residents are guaranteed.

The invention relates to a pipeline machine, which comprises a water tank which is provided with a water level detection device therein, wherein the pipeline machine further comprises a control system and a prompting device; both the prompting device and the water level detection device are connected to the control system; and the prompting device transmits a prompting signal when the control system fails to receive a water level change signal transmitted by the water level detection device within a determined time. The pipeline machine disclosed by the invention can be used for transmitting the prompting signal to inform a user to replace fresh water in the case that a water level is continuously unchanged for a certain duration, so as to avoid unhealthy water drunken by the user and to guarantee the safety of drinking water. The invention also relates to a control method of the pipeline machine.

The invention discloses a disk type millipore filter which comprises a barrel. The barrel is internally provided with a disk type millipore membrane component which comprises a contributing water pipe; the two ends of the barrel are respectively provided with barrel cover components. One barrel cover component is provided with a raw water inlet connection tube and a gas inlet connection tube; the other barrel cover component is provided with a sewage discharging connection tube and a gas discharging connection tube; the barrel cover components are also provided with a purified water outlet connection tube; the contributing water pipe is provided with a plurality of permeable holes; the two ends of the contributing water pipes are communicated with the purified water outlet connection tube. The pressure reduction of disk type membrane groups is small; membranes are difficult to damage and can be used for long term; the interfaces of membranes are provided with open-end free air space, thus having no dead angles and being easily to clean; the membrane surface is smooth; the filter can not be blocked, and has the characteristics of anti-chemical cleaning and non viscidity; once isolates and impurities accumulate on the membrane surface, the disk type millipore framework is only needed to be taken out and cleaned with clean water.

The invention relates to a service life monitoring device for a filter element of a water purifier. The device comprises a first filter element, a water inlet electromagnetic valve, a flowmeter, a second filter element, a third filter element and a gooseneck faucet successively connected through a pipeline; a mechanical switch and a three-in-one integrated module are mounted between the purified water outlet of the third filter element and the gooseneck faucet; the three-in-one integrated module is composed of a control panel, and a flow monitoring device and a display screen separately connected to the control panel; the mechanical switch and the water inlet electromagnetic valve are separately connected to the control panel; and the flowmeter is connected to the flow monitoring device. According to the device, a client can master the service life conditions of the filter elements immediately, so that the filter elements are replaced immediately and conveniently, and the drinking water safety is ensured.

The invention discloses technology and methods for highly-efficiently enriching and recovering pathogenic bacteria in water environments. The technology comprises the following main contents of: (1) the method for preparing a novel positive charge-carrying filter material; (2) the method for manufacturing a filter; (3) the assembly of a filtering concentration system; (4) the method for preparingan eluent; and (5) the method for concentrating and recovering the pathogenic bacteria. Through the technology and the methods of the invention, the pathogenic bacteria can be highly-efficiently enriched and recovered from various water environments such as tap water, water in clean water sources, heavily-polluted water bodies and sewage, the concentration and recovery efficiency is stable, the recovery rate of cleaner water bodies can reach over 90 percent, and the recovery rate of the heavily-polluted water bodies can reach over 80 percent. The filter material in the invention can be used repeatedly after being simply treated, and other facilities can also be used repeatedly, so the technology and the methods of the invention have the advantages of simplicity, economy and practicality, and are particularly suitable for use in laboratories and at site.

The invention provides a feeding and drinking device for animal breeding, and relates to the field of breeding equipment. The feeding and drinking device comprises a food groove and a water groove, square pillars are arranged at the two sides of the front portion and the two sides of the rear portion of the food groove, supporting pillars are connected in the square pillars in a sleeved mode, the lower ends of the supporting pillars are fixedly connected to the water groove, water tanks are both arranged at the left end and the right end of the food groove, ultraviolet sterilizers are arranged at both the left side and the right side inside the water tank, a water outlet hole is formed in the bottom of the water tank, is provided with a water filter, and is fixedly connected with the upper end of a water pipe, the water pipe extends downwards into the water groove, the food groove is provided with a mosquito killing and insect expelling device, a buzzer and a Bluetooth loudspeaker box from left to right separately, clapboards are arranged in front of the water groove, and infrared sensors are arranged between adjacent clapboards and are connected with the loudspeaker box through leads. The feeding and drinking device for animal breeding has the advantages that the functions are diversified, the height of the food groove can be adjusted, and the animals can be separated to prevent the animals from fighting in the feeding or drinking process.

The invention discloses an energy-saving environmental-friendly water purifier type water dispenser. A transparent installing chamber is arranged at the bottom of a water storage box; an ultraviolet lamp used for sterilizing water in the water storage box is arranged in the transparent installing chamber; and meanwhile, a regular water discharging assembly is arranged in a base of the water dispenser and communicates with the transparent box body. The energy-saving environmental-friendly water purifier type water dispenser can regularly discharge overnight water in the water dispenser at the preset time, and can change fresh water, so that a user can drink fresh water every day; the water drinking safety is ensured; in addition, through the regular water discharging assembly, the overnightwater is introduced into the transparent installing chamber for cooling the ultraviolet lamp; the utilization rate of the overnight water is improved; when the ultraviolet lamp generates a fault, theultraviolet lamp can be conveniently replaced, and the water in the water storage box does not need to be totally discharged, so that the water resource waste is reduced; and in the use process, better energy-saving and environmental-friendly effects are achieved.