Water purifier

Abstract

A water purifier comprises a filter system, a booster pump and a water inlet electromagnetic valve, the filter system comprises a composite filter element, an RO filter element and a rear filter element, a water inlet of the composite filter element is connected with a tap water pipe through a water inlet three-way ball valve, and a water outlet of the composite filter element is connected with an inlet of the RO filter element through the water inlet electromagnetic valve and the booster pump. The water purifier is characterized in that a pure water outlet of the RO filter element is connected with two pipelines, the first pipeline is connected with the water outlet through a rear filter element, a check valve and a high-pressure switch, the second pipeline is connected with the wastewater drainage pipeline through a water outlet electromagnetic valve, and the water outlet electromagnetic valve is connected with the wastewater drainage pipeline. At least each path of execution signal output end of the controller is respectively connected with the water inlet electromagnetic valve, the water outlet electromagnetic valve, the combined electromagnetic valve and the booster pump, when the standby time of the machine exceeds the preset standby time, the water inlet electromagnetic valve, the booster pump and the water outlet electromagnetic valve simultaneously work for a period of preset working time, water with high TDS in the RO filter element is discharged, and then the machine returns to the standby state. The cup is simple and reasonable in structure, does not need a pressure switch for detection, is large in flux, and ensures drinking safety.

Description

Technical Field

[0001] The utility model belongs to the field of water treatment technology and relates to a pure water machine to solve the problem that the TDS of the first cup of water of a large-flux RO machine is too high. Background Art

[0002] Nowadays, water pollution is becoming more and more serious, and the problem of urban water safety has become prominent. In order to solve the problem of secondary pollution of tap water and harmful substances in tap water caused by raw water pollution, more and more water purifiers are being used. At present, the main method for household filtration and purification is RO reverse osmosis water purifier. Municipal tap water is treated by coarse filtration system and RO reverse osmosis filtration to obtain water that can be directly drunk. TDS is the abbreviation of total dissolved solids, also known as total dissolved solids. TDS refers to the total amount of all solutes in water, including the content of both inorganic and organic matter. The higher the TDS value, the more dissolved substances are contained in the water. The high or low TDS value affects the quality of water. When the TDS value is too high, it is easy to endanger the health of people who drink it.

[0003] Large-flux RO machines are generally machines with a capacity of more than 400G, without a pressure tank. The water circuit diagram is as follows: Figure 1 As shown, the water production process is as follows: tap water passes through the water inlet three-way ball valve 10, flows through the composite filter element 1, the low-pressure switch 4, the water inlet solenoid valve 5 and the booster pump 6 to increase the water inlet pressure, and the high-pressure water enters the RO filter element 2. The concentrated water is discharged from the wastewater drainage pipeline 13 through the combined solenoid valve 14, and the pure water flows out through the post-filter element 3, the check valve 7, the high-pressure switch 8 and then the water outlet faucet 12. When the machine is on standby for more than 1 hour, the wastewater with high TDS value in the RO filter element 2 will penetrate into the pure water, resulting in the TDS value of the pure water part being almost the same as that of the wastewater. In this way, when the machine is started, the TDS of the first cup of pure water released is quite large, so the problem of too high TDS of the first cup of water needs to be solved.

[0004] After investigation, the existing patent number is CN202320252694.2 Chinese patent "A new device for solving the problem of too high TDS in the first cup of pure water", including a water inlet pipe, a solenoid valve, a water storage barrel, a flow interceptor, a connecting pipe and a fixed pipe. The water inlet pipe is fixedly connected to the membrane filter element, and the membrane filter element is provided with a pure water outlet and a waste water outlet. At the same time, the pure water outlet is connected to a check valve through a pipeline, and the check valve is connected to a pressure switch through a pipeline, and a drinking water pipe is provided on the pressure switch. The device is provided with a pressure switch. When the pressure switch detects a drop in the pressure in the pipeline, it can trigger the operation of the solenoid valve, and then the water in the pipeline between the pure water outlet and the check valve is discharged from the fixed pipe through the solenoid valve, avoiding the discharge of purified water with too high TDS content from the drinking water pipe through the check valve. However, if the pressure switch is used for detection, if the pipeline pressure is low in the standby state, the solenoid valve will be triggered to work continuously. Although it can solve the problem of too high TDS in the first cup of water, the design is not reasonable enough, the energy consumption is large, and there is a lot of water waste. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a pure water machine with simpler and more reasonable structure, low energy consumption, safe and healthy drinking water in view of the above technical status quo, which effectively solves the problem of high TDS of the first cup of water of a large-flux RO machine.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a pure water machine, including a filtering system, a booster pump and a water inlet electromagnetic valve, the filtering system includes a composite filter element, an RO filter element and a post-filter element, the water inlet of the composite filter element is connected to the tap water pipe through a water inlet three-way ball valve, the water outlet of the composite filter element is connected to the inlet of the RO filter element through the water inlet electromagnetic valve and the booster pump, the pure water outlet of the RO filter element is connected to the water inlet of the post-filter element, and the concentrated water outlet of the RO filter element is connected to the wastewater drainage pipeline through a combined electromagnetic valve, and the RO filter element is connected to the wastewater drainage pipeline. The pure water outlet is connected to two pipelines, wherein the first pipeline is connected to the water inlet of the post-filter element, the water outlet of the post-filter element is connected to the water outlet faucet through a check valve and a high-pressure switch, and the second pipeline is connected to the wastewater drainage pipeline through a water outlet solenoid valve. At least the execution signal output ends of each controller are respectively connected to the water inlet solenoid valve, the water outlet solenoid valve, the combination solenoid valve, and the booster pump. When the machine is on standby for more than the preset standby time, the water inlet solenoid valve, the booster pump, and the water outlet solenoid valve work simultaneously for a preset working time to discharge the water with high TDS in the RO filter element, and then return to the standby state.

[0007] Furthermore, the display signal output terminal of the controller is connected to a display screen, and each control signal input terminal of the controller is connected to a touch button, a high voltage switch, and a low voltage switch.

[0008] Finally, the pure water machine has a chassis, which has a front plate, a rear plate, a top plate, a bottom plate and side plates thereof. A filter element holder is arranged in the chassis, and two filter element chambers are horizontally distributed above and below the filter element holder. The RO filter element is installed in the upper chamber, and the composite filter element is installed in the lower chamber. In addition, the upper hole and the lower hole of the front plate are connected at the front end of each chamber through their own end covers, and a rear filter element chamber is arranged in the rear plate, and the rear filter element is installed, and a detachable cover plate is provided. A booster pump is installed on the bottom plate below the filter element holder, and a circuit board of the controller is fixed on the lower inner side of the front plate.

[0009] Compared with the prior art, the advantages of the utility model are: a second pipeline is added to the pure water outlet of the RO filter element, and the second pipeline is connected to the wastewater drainage pipeline through the water outlet solenoid valve. When the machine is on standby for more than a preset standby time, such as 1h, the water inlet solenoid valve, the booster pump and the water outlet solenoid valve work simultaneously for a preset working time, such as 30±5 seconds, to discharge the water with high TDS in the RO membrane; a controller is provided to automatically control the opening and closing of each electrical component to ensure that when on standby, the water with high TDS is automatically discharged every preset standby time, such as 1 hour. The structure of the utility model is simpler and more reasonable, and there is no need to set a pressure switch detection. It only needs to detect that the standby time exceeds the preset standby time to automatically discharge the water with high TDS, which solves the problem of too high TDS in the first cup of water, and has a large flux to ensure the safety of drinking water. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 To improve the water circuit schematic diagram of the previous water purifier;

[0011] Figure 2 It is a schematic diagram of the waterway of an embodiment of the utility model;

[0012] Figure 3 The electrical schematic diagram of the intelligent controller of the embodiment of the utility model;

[0013] Figure 4 This is a process flow chart of an embodiment of the utility model;

[0014] Figure 5 This is one of the three-dimensional diagrams of the embodiment of the utility model (without the side panels);

[0015] Figure 6 This is the second stereogram of the embodiment of the utility model (without the side panels). DETAILED DESCRIPTION

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] like Figures 2 to 6As shown, a pure water machine includes a filtration system, a booster pump 6, a water inlet solenoid valve 5, a control component and various connectors for connection. The filtration system includes a composite filter element 1, an RO filter element 2 and a post-filter element 3. The water inlet of the composite filter element 1 is connected to a tap water pipe 11 through a water inlet three-way ball valve 10. The water outlet of the composite filter element 1 is connected to the water inlet of the RO filter element 2 through a water inlet solenoid valve 5 and a booster pump 6. The concentrated water outlet of the RO filter element 2 is connected to a wastewater drainage pipe 13 through a combined solenoid valve 9. The pure water of the RO filter element 2 The outlet is connected to two pipelines, wherein the first pipeline is connected to the water inlet of the post-filter element 3, the water outlet of the post-filter element 3 is connected to the water outlet faucet 12 through the check valve 7 and the high-pressure switch 8, and the second pipeline is connected to the wastewater drainage pipeline 13 through the water outlet solenoid valve 14. When the machine is on standby for more than a preset standby time, such as 1h, the water inlet battery valve 5, the booster pump 6 and the water outlet solenoid valve 14 work simultaneously for a preset working time, such as 30 seconds, to discharge the water with high TDS in the RO filter element 2, and then return to the standby time to execute the normal working procedure.

[0018] The water purifier also includes an intelligent controller A, a display screen 15 and a touch button 16. The various execution signal output ends of the intelligent controller A are respectively connected to the water inlet solenoid valve 5, the water outlet solenoid valve 14, the combination solenoid valve 9, and the booster pump 6. The display signal output end of the intelligent controller A is connected to the display screen, and the various control signal input ends of the intelligent controller A are connected to the touch button 16, the high-pressure switch 8, and the low-pressure switch 4. In this way, the intelligent controller A is used to control the operation of each solenoid valve and the booster pump 6, and to display on the display screen 15, and to receive control signals from the touch button 16, the low-pressure switch 4, and the high-pressure switch 8. Figure 3 As shown, the intelligent controller A is connected to an external power source via a power adapter 17 .

[0019] When the machine is on standby for more than 1 hour, the water inlet solenoid valve 5, the booster pump 6 and the water outlet solenoid valve 14 automatically work simultaneously for 30 seconds under the control of the intelligent controller A, and the water with high TDS in the RO filter element 2 is discharged from the wastewater drainage pipeline 13 through the water outlet solenoid valve 14.

[0020] The mechanical structure of the entire pure water machine adopts a chassis 20, which has a front plate 21, a rear plate 22, a top plate 23, a bottom plate 24 and its side plates 25. A filter element holder 26 is arranged in the chassis 20. The filter element holder 26 has two filter element chambers horizontally distributed above and below. The upper chamber 27 is installed with an RO filter element, and the lower chamber 28 is installed with a composite filter element. In addition, the upper hole 21a and the lower hole 21b of the front plate 21 are connected at the front end of each chamber through their own end covers. A rear filter element chamber 29 is arranged at the rear plate 24, and a rear filter element is installed, which is equipped with a detachable cover plate, so that it is convenient for users to replace the filter element. A booster pump is installed on the chassis bottom plate 24 below the filter element holder 26, and a circuit board 210 of the intelligent controller A is fixed on the lower inner side of the front plate 21 to prevent the circuit board from being damaged by water contamination.

[0021] Here’s how it works:

[0022] The tap water in the water pipe 11 passes through the water inlet three-way ball valve 10, flows through the composite filter element 1, and the low-pressure switch 4, the water inlet solenoid valve 5 and the booster pump 6 work to increase the water inlet pressure, and the high-pressure water enters the RO filter element 2 for filtration. The concentrated water produced after filtration is discharged through the wastewater drainage pipeline 13 through the combined solenoid valve 9, and the pure water is divided into two paths: the first path passes through the post-filter element 3, the check valve 7, and the high-pressure switch 8, and flows out from the water outlet faucet 12; the second path is connected to the wastewater drainage pipeline 13 through the water outlet solenoid valve 14. When the machine is on standby for more than 1 hour, the water inlet battery valve 5, the booster pump 6 and the water outlet solenoid valve 14 work simultaneously for 30 seconds to discharge the water with high TDS in the RO filter element 2.

[0023] The utility model has a more reasonable structural design and does not need to set up a pressure switch detection. It only needs to detect that the standby time exceeds 1 hour to automatically discharge the water with high TDS, thus solving the problem of the first cup of water with too high TDS. It also has a large flux and ensures the safety of drinking water.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A water purifier, comprising a filtration system, a booster pump and a water inlet solenoid valve, wherein the filtration system comprises a composite filter element, an RO filter element and a post-filter element, wherein the water inlet of the composite filter element is connected to the tap water pipe through a water inlet three-way ball valve, the water outlet of the composite filter element is connected to the inlet of the RO filter element through the water inlet solenoid valve and the booster pump, the pure water outlet of the RO filter element is connected to the water inlet of the post-filter element, and the concentrated water outlet of the RO filter element is connected to the wastewater drainage pipeline through a combined solenoid valve, characterized in that: The pure water outlet of the RO filter element is connected to two pipelines, wherein the first pipeline is connected to the water inlet of the post-filter element, the water outlet of the post-filter element is connected to the water outlet faucet through a check valve and a high-pressure switch, and the second pipeline is connected to the wastewater drainage pipeline through a water outlet solenoid valve. At least the execution signal output ends of each controller are respectively connected to the water inlet solenoid valve, the water outlet solenoid valve, the combination solenoid valve, and the booster pump. When the machine is on standby for more than a preset standby time, the water inlet solenoid valve, the booster pump, and the water outlet solenoid valve work simultaneously for a preset working time to discharge the water with high TDS in the RO filter element, and then return to the standby state.

2. The water purifier according to claim 1, characterized in that: The display signal output terminal of the controller is connected to the display screen.

3. The water purifier according to claim 1, characterized in that: Each control signal input end of the controller is connected with a touch button, a high voltage switch, and a low voltage switch.

4. The water purifier according to claim 1, characterized in that: The pure water machine has a chassis, which has a front plate, a rear plate, a top plate, a bottom plate and side plates. A filter element holder is arranged in the chassis, and two filter element chambers are horizontally distributed above and below the filter element holder. The RO filter element is installed in the upper chamber, and the composite filter element is installed in the lower chamber. In addition, the upper hole and the lower hole of the front plate are connected at the front end of each chamber through their own end covers, and a rear filter element chamber is arranged in the rear plate, and the rear filter element is installed, and a detachable cover plate is provided. The bottom plate is below the filter element holder, and a booster pump is installed. The circuit board of the controller is fixed on the lower inner side of the front plate.

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