76results about How to "Ensure healthy drinking water" patented technology

The invention discloses an object recognition water dispenser and an intelligent water drinking control system and method. The object recognition water dispenser comprises a water dispenser body with a water outlet and a water inlet. The water dispenser body is provided with an information transmission unit, a label reader, a user identity recognition unit and a control unit, the information transmission unit is used for information transmission between the water dispenser body and an external information management center, the user identity recognition unit is used for obtaining input information of users, and the control unit controls the water inlet to discharge water; the label reader, the user identity recognition unit and the control unit are connected with the information transmission unit, and transmit information to the information management center or receive instruction information sent by the information management center through the information transmission unit. The object recognition water dispenser manages and controls water intake and other information according to own characteristics of the users, can be widely used in public places such as a hospital and a nursing home, and ensures healthy water drinking, and it is avoided that the users contract a disease due to confusion of cups.

The invention discloses a control method and system of a water dispenser, a server and the water dispenser. The control method comprises the steps that the server receives historical operating records, uploaded by the water dispenser, of a user; the server generates usage habit data of the user according to the historical operating records, wherein the usage habit data comprises prediction usage time of the user using the water dispenser; the server controls the water dispenser to be started in the preset time before reaching the prediction usage time for heating according to the usage habit data. According to the control method of the water dispenser, electricity saving and energy saving are achieved; meanwhile, the safety of the water dispenser is improved, and the health of the user for drinking water is guaranteed.

The invention discloses a water purifier and a control method thereof, and the water purifier comprises a main control chip and a waterway system connected with the main control chip, wherein the main control chip can acquire data of water intaking habit of a user and control a waterway system to purify water in real time or at scheduled time in advance according to the data of the water intaking habit of the user through a cloud service platform. According to the water purifier and the control method thereof provided by the invention, water can be purified in real time or in advance according to the water intaking time and the use habit of the user, the obtained pure water which is the just filtered water can be guaranteed when the user intakes water every time, so that the fresh and pure water can be supplied to the user, the healthy water for the user can be guaranteed, furthermore, the energy saving of the water purifier can be realized and the safety of the use of the whole water purifier can be improved.

Disclosed is a carbon fiber instant-heating-type water boiler. A shell comprises a heat preservation water tank for water storage and heat preservation, a heat exchanger for conducting heat exchange on boiling water, a carbon fiber heating body utilizing far infrared ray for heating and a plurality of water pipes for conveying cold water and / or hot water. The carbon fiber instant-heating-type water boiler is characterized in that the heat preservation water tank and the heating body are independently arranged and communicated through a three-way pipe, and the three-way pipe is communicated with the heat exchanger. The flow direction of hot water is determined by detecting the temperature of water outflowing from the heating body, the water reaching the temperature is stored in the heat preservation water tank, and water not reaching the temperature flows back into the heat exchanger for heat exchange to become warm boiled water. In addition, the heat preservation water tank is provided with a supplementary heater, and the water not reaching the temperature is heated in a supplementary mode. Due to the structure, the temperature is ensured, water is prevented from being boiled repeatedly, and drinking water health is ensured; as the heating body utilizes far infrared ray for heating, incrustations will not be adsorbed; as the water is heated in a flowing mode, the heating efficiency is high, no incrustation is formed, and the carbon fiber instant-heating-type water boiler is durable and ensures the water quality.

The invention relates to the technical field of electric kettles, in particular to an electric kettle for supplying boiled drinking water for general families, offices and the like. The electric kettle comprises a body, a cap, a water dispensing unit and a control unit. The body comprises a casing and a liner arranged in the casing, a heating element with a chamber for containing water is arranged between the liner and the casing and is provided with a water inlet and a water outlet, the water inlet is communicated with a water delivery unit used for delivering water in the liner to the heating element, the water outlet is communicated with the water dispensing unit through a water outlet control component, and is communicated with a circulating return pipeline through a circulating control component, and water in the heating element returns to the liner through the circulating return pipeline. Water in low volume can be heated by the electric kettle, and accordingly the electric kettle is time-saving and labor-saving, and reduction of quality of water in the liner, caused by the fact that the water is boiled frequently, can be avoided.

The invention discloses an object recognition water dispenser and an intelligent drinking-water control system and an intelligent drinking-water control method. The object recognition water dispenser comprises a water dispenser body provided with a water outlet and a water inlet, an information transmission unit, a tag reader and a control are arranged on the water dispenser body, the information transmission unit is in information transmission with an external information management center, the tag reader is used for acquiring a user identification unit of user input information, and the control unit is used for controlling water outgoing of the water outlet; the tag reader, the user identification unit and the control unit are connected with the information transmission unit, and the information is transmitted to the information management center or instruction information transmitted by the information management center is received through the information transmission unit. The information of water consumption and the like is controlled according to user identity, the water dispenser is widely applicable to public places of hospitals, nursing homes and the like to avoid users getting infected by confusing water cups with one another, and healthy drinking-water is guaranteed.

The invention discloses a water boiler with double preheating modes. The water boiler comprises a water boiling tank, a water preheating tank and a cold water tank. The cold water tank is arranged above the water preheating tank and used for supplementing water to the water preheating tank. The water boiling tank is parallel and adjacent to the water preheating tank. According to the water boiler, the three water tanks are adopted, the water boiling tank generates boiled water of 100 DEG C, the water preheating tank generates hot water of 80 DEG C, and the cold water tank supplements the water when the level of the water in the water preheating tank is low. When the water preheating tank is heated, steam generated by water boiling enters a steam exhausting pipe, and as the level of cold water in the cold water tank is higher than the steam exhausting pipe, in the process of exhausting the steam in the steam exhausting pipe in a circulating mode, generated heat preheats the cold water in the cold water tank; meanwhile, as the temperature of the water in the water preheating tank is 80 DEG C, when the water boiler does not carry out heating and is in a standby state, the cold water tank continues to absorb the heat generated by the hot water in the water preheating tank for preheating the cold water. By means of the two modes, the water boiler can effectively recover and utilize the lost heat in the heating and standby processes, energy is saved, and consumption is reduced.

The invention discloses an automatic long cup cleaning device. The device comprises a handle, a first connecting plate is fixedly connected to the bottom of the handle, a mounting shell is fixedly connected to the bottom of the first connecting plate, a driving motor is fixedly connected to the bottom of the inner wall of the mounting shell, a driving rotating shaft is fixedly connected to an output shaft of the driving motor, the bottom of the driving rotating shaft penetrates through the mounting shell and extends to the exterior of the mounting shell, and a second connecting plate is fixedly connected to the bottom of the driving rotating shaft. Accordingly, by arranging the driving motor, an electric telescopic rod, a bolt, a first fixing plate, a second fixing plate, a first support plate, an ordinary telescopic rod, a spring, a cup rim cleaning brush, a cup body cleaning brush and cup inner cleaning cotton, the long cup cleaning device is ideal in cleaning effect; by means of cleaning of the automatic long cup cleaning device, the cup rim, the cup body and the cup inner wall can be cleaned, cleanliness of a long cup is guaranteed, on one hand, the attractiveness of the cup iskept, and on the other hand, water health of a user is guaranteed.

The invention discloses a multifunctional energy-saving integral direct drinking water machine comprising a combined primary filtering device connected to a tap water pipe and a pure water storage device. A first pressurizing device and a reverse osmosis processing device are sequentially arranged between the combined primary filtering device and the pure water storage device. A pure water outlet and a wastewater outlet are arranged on the reverse osmosis device. The pure water outlet is connected with the pure water storage device. A wastewater processing system is connected to the wastewater outlet. With the direct drinking water machine, wastewater produced through the reverse osmosis processing device can be converted into energy water by using a precise composite filtering device in the wastewater processing system; and a large amount of wastewater produced by pure water production is converted into valuable water resource which can be directly drunk by people. Two types of drinking water are provided by one water machine, such that drinking water demands of different populations are satisfied, and a problem of increased land occupation of two different water purification machines is avoided. The direct drinking water machine provided by the invention can be adopted as a multifunctional water purification machine.

The invention provides a water dispenser capable of positioning a water cup and a water cup positioning system and positioning method. The water dispenser comprises a water dispenser body with a water outlet and a water inlet, the water dispenser body is provided with a man-machine interaction unit, an electronic tag reader, a display unit and a central controller, wherein the man-machine interaction unit is used for obtaining a water cup position inquiry command which includes an ID of the water cup to be inquired; the electronic tag reader is used for obtaining electronic tag information sent by an electronic tag on the water cup; the display unit is used for displaying the position information of the water cup to be inquired; the central controller is connected with the man-machine interaction unit, the electronic tag reader and the display unit and is used for receiving the water cup position inquiry command obtained by the man-machine interaction unit and obtaining electronic tag information obtained through the electronic tag reader so as to obtain the position information of the water cup to be inquired and transmit the position information to the display unit for display. The position of the water cup can be searched for quickly through the water dispenser, water cups of users can be distinguished accurately, and it is guaranteed that water drinking is safe and hygienic.

The invention relates to the field of intelligent water taking equipment, in particular to an intelligent water taking equipment based on voiceprint voice recognition and rfid technology, which comprises a water dispenser body, a water bucket, a water taking structure, a water quality monitoring structure, a fixing structure, a collecting structure, an anti-toppling structure, an RFID tag which isarranged at the bottom of the water cup and an induction coil which is positioned below the water outlet of the water dispenser body; when a water cup is placed below a water outlet of the water dispenser body to prepare for receiving water, the induction coil automatically identifies the RFID tag at the bottom of the water cup and the user authentication module carries out instant authentication, consequently, the identity of the user is recognized, the intelligent water outlet control module is further controlled to discharge water; every time drinking water data records are gathered to thepersonal drinking water health module and sent to a user mobile phone applet, a user can master and manage own drinking water health information conveniently, and the water quality monitoring moduleis mainly used for detecting raw water and purified water TDS in the current water dispenser and is in communication connection with the water quality monitoring module, so that healthy drinking waterof the user is guaranteed.

The invention relates to the field of livestock, in particular to a water drinking device for goats. The water drinking device includes a mounting rack, a water tank and a water groove; the water groove is formed in the mounting rack, the water tank is installed on the mounting rack in a height direction of the mounting rack and positioned above one end of the water groove, and a water outlet is formed in the bottom surface of the water tank and faces the water groove. The water drinking device also includes a base assembly which can retract when an external force is performed on the base assembly, and the water outlet of the water tank can be opened when the base assembly retracts; a water drain port is formed in the end, facing the water tank, of the water groove and can be closed when the base assembly retracts; a cleaning assembly is slidingly connected to the interior of the water groove in the length direction; one end of the cleaning assembly is connected to the side wall, at one end of the water tank, of the water groove; the other end of the cleaning assembly slides toward the end away from the water tank when water enters the water groove, and slides toward the end closeto the water tank during drainage of the water groove. The bottom of the cleaning assembly abuts against the bottom of the water groove, and a check block is arranged at the end, away from the water tank, of the water groove and can block the cleaning assembly.

The invention provides a filter core structure. The filter core structure comprises a housing provided with an inner cavity; the top of the housing is provided with a raw water port, a pure water port, and a waste water port which are communicated with the inner cavity; a filter assembly is arranged in the inner cavity; the top side of the filter assembly is provided with a raw water inlet communicated with and matching the raw water port, and a pure water outlet communicated with and matching the pure water port; the bottom side of the filter assembly is provided with a waste water outlet; awater storage space is arranged between the waste water outlet and the bottom of the inner cavity; the waste water outlet is provided with a single direction water guide valve which is used for guiding single direction discharge of waste water into the water storage space; a waste water runner communicated with the water storage space and the waste water port is formed between the periphery of thefilter assembly and the side wall of the inner cavity. Adoption of the filter core structure is capable of solving a corresponding water purifying device initial discharge water TDS standard exceeding problem effectively, and ensuring user drinking water to be good for health.

The invention relates to the technical field of anti-counterfeiting products, in particular to a barreled water sealing label and a preparation method thereof. The barreled water sealing label comprises an OPP layer, a first adhesive layer, a printing layer, a PET layer, an imaging layer, a holographic laser layer, an aluminum plating layer, a variable digital layer, a second adhesive layer and a heat sealing layer which are sequentially arranged from top to bottom. The variable two-dimensional code is endowed on the label, one label has one code, the two-dimensional code is printed on the reverse side of the sealing label and can be verified only after being uncovered by a consumer, the sealing label is prevented from being counterfeited by lawbreakers, and the anti-counterfeiting strength is high; the sealing label has the characteristics that the two-dimensional code does not deform during heat sealing, and the holographic laser layer does not have a matte phenomenon; the preparation method is scientific, reasonable, simple and easy to implement.

The embodiment of the invention discloses a purified water intelligent control method and device as well as a water purifier. The method comprises the following steps that the passed storage time of purified water in a water storage tank is monitored in real time; whether the passed storage time of the purified water reaches a secondary water purification time or not is judged; and if the passed storage time of the purified water reaches a circulation purification time, an electromagnetic valve is controlled to be opened, and a water pump enables the purified water in the water storage tank toreturn to the purifier filter element for secondary purification. The purified water intelligent control method and device as well as the water purifier can ensure the freshness of the purified waterin the water purifier, ensures the water drinking health of a user, can intelligently learn the water drinking habit of the user, improves the user experience, lowers the consumption of the filter element, enables water purification to be more intelligent, is lower in cost and is suitable for popularization and application.

The invention discloses a filter system of a water purifying plant and the water purifying plant with the same. The filter system comprises a prepositioned filter element, a booster pump, an RO membrane filter element, a flexible water bag, a post-positioned filter element and an UV lamp, wherein the prepositioned filter element is connected with an outer water source to preliminarily purify the water quality; the booster pump is connected to the downstream of the prepositioned filter element through an inlet water magnetic valve; the RO membrane filter element is connected with the downstream of the booster pump and is provided with a water inlet, a purified water outlet and a wastewater outlet; the flexible water bag is connected with the purified water outlet of the RO membrane filter element; the post-positioned filter element is connected with the flexible water bag through a water pump so as to further purify water from the flexible water bag, and is applicable to being connected with a water faucet; and the UV lamp is used for sterilizing water in the flexible water bag. According to the filter system of the water purifying plant dislcosed by the embodiment of the invention, the UV lamp can be used for sterilizing the water in the flexible water bag once again, and the flexible water bag is prevented from bacteria breeding during long-term suspension, thus further improving the water quality of drinking water and ensuring health drinking water for users.

The invention belongs to the technical field of municipal water supply and drainage engineering and environmental engineering, and discloses a method for measuring a formation potential of a novel nitrogen-containing disinfection by-product trichloroacetamide in drinking water. The method comprises the following steps of: determining the pH value of a culturing solution, determining the adding amount of chlorine and the culturing time, and measuring the concentration of the generated trichloroacetamide, wherein the step of determining the pH value of the culturing solution comprises the following steps of: controlling the temperature of the culturing solution at 23+ / -2 DEG C and experimenting without lights, and utilizing acid or alkali to adjust the pH value of the culturing solution to 4-6 under the condition that the adding amount of the trichloroacetamide is 0.5 micromole / liter; and the step of determining the adding amount of the chlorine and the culturing time comprises the following steps of: measuring values of soluble organic nitrogen and ammonia nitrogen in a water sample and calculating the adding amount of C12, and culturing for 3 days. According to the special method which is applicable to measuring the formation potential of the trichloroacetamide, established by the invention, the precursor level of the trichloroacetamide can be sufficiently represented and effective source control of the TCAcAm (Trichloroacetamide) can be carried out on water supply plants, thus the safety of the drinking water is improved.

The invention provides a water dispenser operation and monitoring method and device, and a water dispenser. The method includes: determining first preset thresholds corresponding to different time periods according to historical data of the hot water use amount; starting a heating device to operate while the monitored hot water capacity in the current time period is less than the first preset threshold corresponding to the current time period, and performing heating. According to the technical scheme, the heating device can be controlled to operate so as to meet the demands of users according to the demand of the user for hot water in different time periods; the user experience can be improved; the users can determine the cleaning time and the cleaning cycle of the water dispenser for reference by detecting the dirt content of the water dispenser, and then health water of the users can be ensured.

The invention discloses an automatic quantitative water feeding device for cattle and sheep breeding, and relates to the technical field of cattle and sheep breeding equipment. The automatic quantitative water feeding device comprises a bottom plate, a breeding shed body is fixedly connected to the top of the bottom plate, drinking water tanks are fixedly connected to both sides of the bottom of the inner wall of the breeding shed body, drinking troughs are fixedly connected to the tops of the drinking water tanks, mounting plates are fixedly connected to both sides of the inner wall of the breeding shed body, heating boxes are fixedly connected to the tops of the mounting plates, and protective covers are fixedly connected to the tops of the heating boxes. By means of the automatic quantitative water feeding device for cattle and sheep breeding, it is well realized that cattle and sheep drink clean and non-contaminated water, the purpose of guaranteeing the drinking health in cattle and sheep breeding is achieved, it is realized that water feeding is switched on when cattle and sheep drink water and is switched off after cattle and sheep drink water, it is well avoided that residual water accumulates and consequently drinking water is contaminated, the drinking safety in cattle and sheep breeding is well guaranteed, and the device is very beneficial for cattle and sheep breeding enterprises.

The invention relates to the field of household appliances, in particular to a novel water dispenser. The novel water dispenser mainly comprises a case with a vertical cavity, a water pump, a heater,a first tee joint, a second tee joint, a first electromagnetic valve, a second electromagnetic valve and a water outlet nozzle. A recessed round water storage tank is arranged in a central region of the top of the case. A smart base coaxial with the water storage tank covers the top of the water storage tank. The water pump, the heater, the first tee joint, the second tee joint, the first electromagnetic valve and the second electromagnetic valve are arranged in the case and connectively fixed to the inner side wall of the case. The water outlet nozzle penetrates the case through a through hole in the front side wall of the case. The novel water dispenser has the advantages that the water dispenser is not provided with an inner container, and water directly enters the heater to be rapidlyheated in two seconds, so that the problems of repeated water boiling, mixing of unboiled water and boiled water and unhealthy water drinking are solved.

The invention discloses a cup placing frame which comprises a base and four supporting bases evenly arranged above the base. Protruded blocks and cups are arranged above the supporting bases, and the outer sides of the protruded blocks are matched with the outer sides of openings of the cups. The cup placing frame has the advantages that the cup placing frame is novel in structure, attractive and fashionable, the cup washed well can be timely aired, bacteria cannot breed easily, the openings of the cups are downward, dust cannot drop into the cups easily, water drinking health of people is guaranteed, the unused cups can be placed in a unified mode simultaneously, and the clean environment is created for homes.

The invention discloses integral non-negative pressure water purifying-supplying equipment. The integral non-negative pressure water purifying-supplying equipment comprises a non-negative-pressure tank, a purifier, a back flushing system and a control device, wherein the water inlet of the non-negative-pressure tank is connected with a raw water tube; the water outlet of the non-negative-pressure tank is communicated with the water inlet of the purifier in three paths; the water outlet of the purifier is connected with a water supply pipeline; a filtering element is arranged in the purifier; a drain outlet is formed in the bottom of the purifier; a drain valve is arranged on the drain outlet; the water outlet of the purifier is arranged on the side wall or the top of the purifier; the height difference between the water outlet of the purifier and the bottom drain outlet is taken as a sewage falling back-flushing pressure; the water supply pipeline which is connected with the water inlet of the purifier is connected with a bypass pipe; a back-flushing valve is arranged on the bypass pipeline. By adopting the integral non-negative-pressure water purifying-supplying equipment, a water purifying function is provided on the basis of supplying water, an automatic back-flushing function is formed by means of the height difference and an electric control device, automatic back flushing is realized through the filtering element, and replacement and overhauling are avoided.

The invention discloses an ecological pig raising system and an ecological circulation method thereof. The ecological pig raising system is characterized in that a rainwater cavity for storing rainwater is formed in the upper end of a pig house, and the pig house is divided into an upper-layer pig raising room and a lower-layer pig raising room. The invention further discloses the ecological circulation method. The ecological circulation method comprises the following steps: S1, building the pig house; S2, building a manure pit; S3, building a fish pond; S4, building a planting base; S5, building a water circulation system; S6, building a biogas manure circulation system; and S7, building a rainwater utilization system. Feed of the whole pig raising ecological system can be supplied through houttuynia cordata bred in the fish pond and vegetables planted in the planting base, drinking water can be supplied through rainwater, water of the planting base can be supplied through the fish pond, fertilizers of the planting base can be supplied through biogas manure in a biogas digester, fish feed in the fish pond can be supplied through maggots bred in the manure pit, water in the fish pond can be supplied through underground water, and power source of electrical equipment of the whole system can be supplied through power generation of biogas in the biogas digester.

The invention relates to an electric kettle capable of achieving complete boiling. The electric kettle comprises a plug, a kettle body, a cover, a heating plate and a temperature control piece and ischaracterized in that the cover is provided with an exhaust vent; the heating plate, the temperature control piece and the plug are sequentially serially connected; the bottom of the kettle body is provided with a support rack, the heating plate is mounted on the lower portion of the support rack, and the temperature control piece is mounted on the upper portion of the support rack; a thermal insulation layer is arranged between the heating plate and the temperature control piece; a heating area is formed between the support rack and the bottom of the kettle body, a mixing area is formed between the support rack and the top of the kettle body, and a convection channel is formed between the support rack and the lateral wall of the kettle body; the width of the convection channel is smallerthan the height of the heating area. The electric kettle is novel and unique in structure, capable of guaranteeing that water in the kettle body completely reaches 100 DEG C, and capable of effectively preventing 'false boiling' so as to sterilize bacteria and improve water quality.

The invention relates to an electric kettle with a water level detection function. The electric kettle comprises a kettle body and a main control board, and a water level scale is arranged on the kettle body; conductive water level detection films are arranged integrally on the inner side of the kettle body, and the water level scale is composed of one or more water level detection films; the water level detection films are exposed on the inner wall of the kettle body in a flat mode; the bottom of an inner chamber of the kettle body is provided with a conductive public electric sheet, and the public electric sheet is connected with the main control board; the main control board is connected with the water level detection films and the public electric sheet through a corresponding connecting wire which is arranged on the inner side of the kettle body in an integrated way; and with the rise of a water level, a water body contacts with a corresponding water level detection film, the public electric sheet is in communication with a corresponding water level detection film in an conductive mode to form a loop, corresponding loop information is fed back to the main control board, and the main control board executes a corresponding instruction. The electric kettle has the advantages that design is simple, the structure is reasonable, performance is reliable, healthy drinking water for users is guaranteed, cleaning is convenient, integrity is good, additional assembling is not needed, and safety is good.

The invention discloses an environment-friendly zinc and copper integrated water faucet. The environment-friendly zinc and copper integrated water faucet comprises a main shell, a valve element, a copper gland, a decoration ring and a control handle. The main shell comprises a zinc outer shell and a copper inner shell. A foaming device is arranged at the water outlet of the zinc outer shell. The copper inner shell is composed of a valve element base and a water outlet pipe. The valve element is arranged on the valve element base. The valve element base is provided with a water passing hole way and a hot and cold water inlet pipe connection hole which are matched with the valve element. The cold and hot water inlet pipe connection hole is connected with a cold and hot water inlet pipe. The copper gland is connected to the upper port of an outer shell body and presses the valve element. The copper gland is sleeved with the decoration ring. The control handle is connected with a valve rod on the valve element. Compared with the prior art, the environment-friendly zinc and copper integrated water faucet has the advantages that due to the structure, a water flow passageway is completely separated from the zinc outer shell, the environment-friendly and lead-free effect is achieved, the lead pollution is avoided, and the water drinking health is ensured.

The invention relates to water purification equipment and discloses a reverse osmosis membrane filter element assembly and a water purifier with the reverse osmosis membrane filter element assembly. The reverse osmosis membrane filter element assembly comprises a filter element shell body (11), wherein the filter element shell body (11) is internally provided with a central pipe (12) and a reverse osmosis membrane (13) which is arranged around the central pipe (12); the central pipe (12) is internally provided with a water separation plate (123) for separating the central pipe (12) into an upper pipe (121) and a lower pipe (122); a water collection hole (124) is formed in a pipe wall of the lower pipe (122); and a check valve (14) which can be used for cutting off the lower pipe (122) and is arranged in a direction from top to bottom is arranged in the lower pipe (122) and is located below the water collection hole (124). According to the reverse osmosis membrane filter element assembly provided by the invention, the check valve (14) is arranged in the central pipe (12) of a reverse osmosis membrane filter element and long-time closing of the reverse osmosis membrane is effectively solved; and a water purification device for standard-exceeding TDS (Total Dissolved Solids) of initial output water can be used for enabling the TDS of the output water to meet normal standard requirements, and the health of drinking water of users is guaranteed.

The invention relates to the field of water purification and discloses a water purifier with the function of reducing a TDS (Total Dissolved Solids) value of re-yielded water. The water purifier comprises a reverse osmosis membrane filter element (1), wherein a water inlet electromagnetic valve (21) is arranged on a raw water inlet pipe (2), and a first water outlet electromagnetic valve (41) and a high-pressure switch (43) are sequentially arranged on a purified water outlet pipe (4). The water purifier further comprises a water drain pipe (5), wherein one end of the water drain pipe (5) is connected with a water inlet of the first water outlet electromagnetic valve (41), and the other end of the water drain pipe (5) is connected with a concentrated water outlet pipe (3); a second water outlet electromagnetic valve (51) is arranged on the water drain pipe (5), and the water inlet electromagnetic valve (21), the first water outlet electromagnetic valve (41), the second water outlet electromagnetic valve (51) and the high-pressure switch (43) are all connected with a controller. According to the water purifier, the water drain pipe (5), which is used for draining high-TDS-value purified water prepared by the reverse osmosis membrane filter element (1), is connected between a purified water outlet and a concentrated water outlet, so that the high-TDS-value purified water is effectively prevented from being drained from the purified water outlet, and healthy drinking water for users is guaranteed.

The invention relates to a composite filter element formed by combining RO membrane with post-carbon. The composite filter element comprises a filter element shell, an RO membrane and post-carbon; theshell of the filter element is provided with a first splitting groove, a second splitting groove, a third splitting groove, a raw water inlet, a concentrated water outlet and a purified water outlet;the composite filter element also comprises a first water guide piece, an intermediate water guide pipe and a second water guide piece; a first gap is arranged between the filter element shell and the outer wall of the RO membrane, and the first splitting groove is communicated with the outer wall of the RO membrane through the first gap; a first water guide hole is arranged on the first water guide piece, and a second splitting groove is communicated with the top of the RO membrane through the first water guide hole; the inner wall of the RO film is communicated with the first water conducting channel; a second gap is provided between the filter element shell and the outer wall of the post-carbon, and the first water guiding channel is communicated with the post-carbon outer wall throughthe second gap; the central cavity of the post-carbon is communicated with one end of the second water guiding channel, and the second water guiding channel is communicated with the third splitting groove through the second water guide hole. The invention has the advantages of simple and reasonable structure, high water flow, unobstructed waterway, reliable performance and convenient replacementof filter element.