Water purification device and water purification system

Abstract

The utility model provides a water purifying device and a water purifying system. The water purifying system comprises a filtering device, a water inlet pipeline, a water outlet pipeline and a flushing pipeline, the water inlet pipeline is provided with a water inlet valve and a water pump; the flushing pipeline is provided with a pure water storage device and a flushing one-way valve; a water outlet check valve, a high-pressure switch and a water outlet valve are arranged on the water outlet pipeline; the water inlet valve and the water pump are controlled by the high-pressure switch; when the water outlet valve is opened, the high-pressure switch is closed, the water inlet valve and the water pump work, and pure water is discharged through the water outlet valve; when the water outlet valve is closed and the high-pressure switch is switched on, the water inlet valve and the water pump work, pure water enters the pure water storage device, when the high-pressure switch is switched off, the water inlet valve and the water pump stop working, and water in the pure water storage device flushes the filtering device. Water outlet or flushing of the water purifying device can be controlled through the water outlet valve, water outlet and flushing states can be controlled by operating the water outlet valve, electric appliance accessories are few, cost is saved, and the failure rate and the maintenance rate caused by the electric appliance accessories are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of water purification, and in particular relates to a water purification device and a water purification system. Background Art

[0002] A water purifier includes a filter that removes impurities from the water. After the purifier shuts down, raw water and undischarged concentrated water from the filter's raw water side naturally seep into the pure water side, resulting in a high TDS value on the pure water side, also known as the "first glass of water" problem.

[0003] The existing technology generally flushes the raw water in the filter device by setting up a flushing pipeline to avoid the problem of high TDS value of the first cup of water. The existing water purification system adds control devices such as controllers and solenoid valves to control the water purification device to be in the water outlet state or flushing state. There are many electrical accessories, which increases the failure rate and maintenance rate of electrical accessories.

[0004] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Summary of the Invention

[0005] In view of the above problems in the prior art, the present invention proposes a water purification device and a water purification system to solve the technical problems of high failure rate and maintenance rate caused by the large number of electrical accessories in the water purification device.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0007] A water purification system comprising:

[0008] Filter device, including water inlet, pure water inlet and waste water inlet;

[0009] A water inlet pipe is connected to the water inlet, and is provided with a water inlet valve and a water pump:

[0010] A water outlet pipe connected to the pure water outlet;

[0011] The water purification system comprises:

[0012] A flushing pipeline connected to the water inlet pipeline and the water outlet pipeline;

[0013] A pure water storage device is located on the flushing pipeline;

[0014] a flushing one-way valve located on the flushing pipeline between the pure water storage device and the water inlet pipeline, the flushing one-way valve enabling water from the pure water storage device to flow to the water inlet pipeline;

[0015] a water outlet valve connected to the water outlet pipeline;

[0016] a water outlet one-way valve, located on the water outlet pipeline, capable of allowing water from the pure water outlet to flow toward the water outlet valve;

[0017] A high-pressure switch is located on the water outlet pipe; the water inlet valve and the water pump are controlled by the high-pressure switch;

[0018] When the water outlet valve is opened, the high-pressure switch is closed, the water inlet valve and the water pump are working, and the water from the pure water outlet is discharged through the water outlet valve;

[0019] When the water outlet valve is closed and the high-pressure switch is on, the water inlet valve and the water pump work, and the water from the pure water inlet enters the pure water storage device; when the high-pressure switch is disconnected, the water inlet valve and the water pump stop working, and the water from the pure water storage device enters the filter device through the water inlet and is discharged from the wastewater outlet.

[0020] In the water purification system as described above, a second flushing one-way valve is provided on the flushing pipeline between the pure water storage device and the water outlet pipeline, and the second flushing one-way valve can allow the water in the water outlet pipeline to flow to the pure water storage device; or, a first reflux solenoid valve is provided on the flushing pipeline between the pure water storage device and the water outlet pipeline, and the first reflux solenoid valve is closed when the water outlet valve is opened and opened when the water outlet valve is closed.

[0021] In the water purification system as described above, the opening pressure of the second flushing one-way valve is greater than the opening pressure of the water outlet one-way valve.

[0022] In the water purification system as described above, the flushing pipeline is connected to the water outlet pipeline between the filter device and the water outlet one-way valve, or the flushing pipeline is connected to the water outlet pipeline between the water outlet one-way valve and the water outlet valve.

[0023] In the water purification system as described above, a second reflux solenoid valve is provided on the flushing pipeline between the pure water storage device and the water inlet pipeline. The second reflux solenoid valve is closed when the water outlet valve is opened and is opened when the high-pressure switch is disconnected.

[0024] In the water purification system as described above, the flushing pipeline is connected to the water inlet pipeline in front of the water pump, and a reflux solenoid valve is provided on the flushing pipeline between the pure water storage device and the water inlet pipeline; alternatively, the flushing pipeline is connected to the water inlet pipeline after the water pump.

[0025] In the water purification system as described above, a pre-filter device is provided on the water inlet pipe, and a post-filter device is provided on the water outlet pipe.

[0026] In the water purification system as described above, the flushing pipeline is connected to the water outlet pipeline between the filter device and the post-filter device, or the flushing pipeline is connected to the water outlet pipeline between the post-filter device and the water outlet valve.

[0027] In the water purification system as described above, the post-filter device is located between the water outlet one-way valve and the water outlet valve; the flushing pipeline is connected to the water outlet pipeline between the filter device and the post-filter device, or the flushing pipeline is connected to the water outlet pipeline between the post-filter device and the water outlet valve.

[0028] A water purification device, comprising:

[0029] The water purification system mentioned above;

[0030] shell;

[0031] An installation body is located in the housing, the installation body forms a filter device installation cavity, the filter device is arranged in the filter device installation cavity, and the water pump and the pure water storage device are installed on the top of the installation body;

[0032] A water channel assembly is installed on the installation body and is connected to the water channel of the filter device; the water inlet valve is installed on the water channel assembly.

[0033] In a water purification device as described above, the water pump and the pure water storage device are arranged along the installation direction of the filtering device, and the pure water storage device is installed close to the water channel assembly; a recess is provided at the lower part of the pure water storage device, and the water inlet valve is provided in the recess, or at least part of the water channel assembly is provided in the recess.

[0034] Compared with the prior art, the advantages and positive effects of the present invention are as follows: the water purification system of the present invention includes a filtering device, a water inlet pipe, a water outlet pipe, a flushing pipe, a pure water outlet device, a flushing one-way valve, a water outlet valve, a water outlet one-way valve and a high-pressure switch: the filtering device includes a water inlet, a pure water outlet and a waste water outlet; the water inlet pipe is connected to the water inlet, and a water inlet valve and a water pump are arranged on the water inlet pipe: the water outlet pipe is connected to the pure water outlet; the flushing pipe is connected to the water inlet pipe and the water outlet pipe; the pure water storage device is located on the flushing pipe; the flushing one-way valve is located on the flushing pipe between the pure water storage device and the water inlet pipe, and the flushing one-way valve can make the outlet The water in the water pipe flows to the water inlet pipe; the outlet valve is connected to the outlet pipe; the outlet one-way valve is located on the outlet pipe, and the outlet one-way valve can make the water at the pure water outlet flow to the outlet valve; the high-pressure switch is located on the outlet pipe; the inlet valve and the water pump are controlled by the high-pressure switch; when the outlet valve is opened, the high-pressure switch is closed, the inlet valve and the water pump work, and the water at the pure water outlet is discharged through the outlet valve; when the outlet valve is closed and the high-pressure switch is closed, the inlet valve and the water pump work, and the water at the pure water outlet enters the pure water storage device. When the high-pressure switch is disconnected, the inlet valve and the water pump stop working, and the water in the pure water storage device enters the filter device through the water inlet and is discharged from the wastewater outlet. The utility model can control the water outlet or flushing of the water purification device through the water outlet valve. When the water outlet valve is open, the water purification device discharges water normally. When the water outlet valve is closed, the water purification device stops discharging water and causes the pressure of the water outlet pipe to gradually increase. When the pressure value of the high-pressure switch is less than the trip pressure, the water outlet of the pure water outlet of the filter device enters the pure water storage device. When the pressure value of the pressure switch is greater than the trip pressure, the water inlet valve and the water pump stop working, and the water of the pure water outlet device flushes the filter device through the flushing pipe and is discharged from the waste water outlet of the filter device. The operation of the solenoid valve and the water pump of the water purification device of the utility model is controlled by the high-pressure switch. The user only needs to operate the water outlet valve to control the water outlet and flushing status of the water purification device. There are fewer electrical accessories, which saves costs and reduces the failure rate and maintenance rate caused by electrical accessories.

[0035] The utility model water purifier includes a housing, a mounting body, and a waterway assembly. The mounting body is located within the housing and forms a filter mounting cavity. The filter is disposed within the cavity. A water pump and a pure water storage device are mounted on top of the mounting body. The waterway assembly is mounted on the mounting body and communicates with the filter waterway. The water inlet valve is mounted on the waterway assembly. The waterway assembly, filter, water pump, and pure water storage device are all mounted on the mounting body, resulting in easy assembly, a compact structure, improved space utilization, and a reduced size of the water purifier.

[0036] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 This is a schematic diagram of the first embodiment of the water purification system of the present utility model.

[0039] Figure 2 This is a schematic diagram of a second embodiment of the water purification system of the present utility model.

[0040] Figure 3 This is a schematic diagram of a third embodiment of the water purification system of the present utility model.

[0041] Figure 4 This is a schematic diagram of a fourth embodiment of the water purification system of the present invention.

[0042] Figure 5 This is a schematic diagram of a fifth embodiment of the water purification system of the present invention.

[0043] Figure 6 This is a schematic diagram of a sixth embodiment of the water purification system of the present utility model.

[0044] Figure 7 This is a schematic diagram of a water purification device according to a specific embodiment of the present utility model without the shell.

[0045] Figure 8 This is an exploded view of a water purification device according to a specific embodiment of the present utility model.

[0046] In the picture:

[0047] 1. Filter device;

[0048] 2. Water inlet pipe; 21. Water inlet valve; 22. Water pump; 23. Pre-filter device;

[0049] 3. Water outlet pipe; 31. Water outlet valve; 32. Water outlet check valve; 33. High-pressure switch; 34. Post-filter device;

[0050] 4. Flushing pipeline; 41. Pure water storage device; 411. Recess; 42. Flushing check valve; 43. Second flushing check valve; 44. First reflux solenoid valve; 45. Second reflux solenoid valve;

[0051] 5. Wastewater pipeline; 51. Wastewater ratio integrated valve;

[0052] 6. Shell;

[0053] 7. Installation body; 71. Filter device installation cavity;

[0054] 8. Waterway components. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0056] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the positional relationships shown in the accompanying drawings. The terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0057] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0058] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0059] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0060] like Figure 1 As shown, the water purification system includes a filter device 1, a water inlet pipe 2 connected to the filter device 1, a water outlet pipe 3, a flushing pipe 4 and a wastewater pipe 5.

[0061] The water inlet pipe 2 is provided with a water inlet valve 21 and a water pump 22 in sequence in the water channel direction.

[0062] The water outlet pipeline 3 is provided with a water outlet check valve 32, a high pressure switch 33 and a water outlet valve 31 in sequence in the water channel direction.

[0063] The flushing pipeline 4 is provided with a pure water storage device 41 and a flushing one-way valve 42 in sequence in the water channel direction.

[0064] The filter device 1 is a reverse osmosis membrane filter element.

[0065] The filtering device 1 includes a water inlet, a pure water inlet and a waste water inlet.

[0066] The water inlet pipe 2 is connected to the water inlet, and the water inlet pipe 2 is used to supply water to the filter device 1. One end of the water inlet pipe 2 is connected to the raw water, and the other end is connected to the water inlet of the filter device 1.

[0067] The water inlet valve 21 can realize the conduction and cutoff of the water inlet pipeline 2. The water inlet valve 21 is a solenoid valve.

[0068] The water pump 22 is used to provide water inlet power to the water inlet pipeline 2. Preferably, the water pump 22 is a booster pump.

[0069] The water outlet pipe 3 is connected to the pure water outlet of the filter device 1 to discharge the pure water produced by the filter device 1 .

[0070] The water outlet valve 31 is connected to the water outlet pipeline 3 , and the water outlet valve 31 is a mechanical valve or a solenoid valve located on the water outlet pipeline 3 .

[0071] When the water outlet valve 31 is opened, the water outlet pipe 3 is connected to realize water outlet, and when the water outlet valve 31 is closed, the water outlet pipe 3 is cut off and stops water outlet.

[0072] The water outlet one-way valve 32 is located on the water outlet pipeline 3 , and the water outlet one-way valve 32 can allow water from the pure water outlet of the filter device 1 to flow to the water outlet valve 31 .

[0073] The high pressure switch 33 is located on the water outlet pipe 3 and between the water outlet check valve 32 and the water outlet valve 31. The water inlet valve 21 and the water pump 22 are controlled by the high pressure switch 33.

[0074] The flushing line 4 is connected to the water inlet line 2 and the water outlet line 3. The outlet end of the flushing line 4 is connected between the water pump 22 and the filter device 1 on the water inlet line 2, and the water inlet end of the flushing line 4 is connected between the filter device 1 and the water outlet check valve 32 on the water outlet line 3.

[0075] The pure water storage device 41 is located on the flushing pipeline 4 and is used to store pure water.

[0076] The flushing one-way valve 42 is located on the flushing pipeline 4 between the pure water storage device 41 and the water inlet pipeline 2. The flushing one-way valve 42 can allow water from the outlet pipeline 3 to flow to the water inlet pipeline 2 and prevent the raw water in the water inlet pipeline 2 from entering the pure water storage device 41.

[0077] The wastewater outlet of the filter device 1 is connected to a wastewater pipeline 5 , which is used to discharge wastewater from the filter device 1 . A wastewater ratio integrated valve 51 is provided on the wastewater pipeline 5 .

[0078] When the water outlet valve 31 is opened, the water pressure at the high pressure switch 33 decreases, the high pressure switch 33 is closed, the water inlet valve 21 and the water pump 22 are activated, and the pure water filtered by the filter device 1 is discharged through the water outlet valve 31 .

[0079] In the initial stage when the water outlet valve 31 is closed, the pressure at the high-pressure switch 33 has not reached the tripping pressure. When the high-pressure switch 33 is closed, the water inlet valve 21 and the water pump 22 continue to work, and the pure water filtered by the filter device 1 enters the pure water storage device 41. The pressure of the high-pressure switch 33 increases with the increase of the water amount in the pure water storage device 41. When it reaches the tripping pressure, the high-pressure switch 33 is disconnected, and the water in the pure water storage device 41 enters the filter device 1 through the water inlet pipe 2 under the drive of water pressure, and the raw water in front of the membrane of the filter device 1 is discharged from the wastewater outlet, so that the water in front of the membrane of the filter device 1 is replaced by pure water, avoiding the problem of concentrated water on the raw water side infiltrating into the pure water side, resulting in too high TDS of the first cup of water.

[0080] A pre-filter device 23 is provided on the water inlet pipe 2 , and the pre-filter device 23 is located between the water inlet end of the water inlet pipe 2 and the water inlet valve 21 .

[0081] A post-filter device 34 is provided on the water outlet pipeline 3 , and the post-filter device 34 is located between the water outlet check valve 32 and the water outlet valve 31 . Furthermore, the post-filter device 34 is located between the high-pressure switch 33 and the water outlet valve 31 .

[0082] The flushing pipeline 4 is connected to the water outlet pipeline 3 between the filter device 1 and the post-filter device 34 . Furthermore, the flushing pipeline 4 is connected to the water outlet pipeline 3 between the filter device 1 and the water outlet one-way valve 32 .

[0083] Water production process: When the water outlet valve 31 is opened, the water outlet pipe 3 is almost pressure-free, the high-pressure switch 33 is closed, the water inlet valve 21 and the water pump 22 are working, and the raw water enters the pre-filter device 23, flows through the water inlet valve 21 after being purified by the pre-filter device 23, and then enters the filter device 1 after being pressurized by the water pump 22. The pure water filtered by the filter device 1 is discharged through the pure water outlet and enters the water outlet pipe 3, and flows out from the water outlet valve 31 through the water outlet check valve 32 and the high-pressure switch 33. Since the water outlet pipe 3 is almost pressure-free, at this time, the pure water will not enter the pure water storage device 41, but will flow out through the water outlet valve 31; the wastewater generated by the filter device 1 flows out of the filter device 1 through the wastewater outlet.

[0084] When the water outlet valve 31 is closed, the pure water storage device 41 is replenished with water, and the pressure of the high-pressure switch 33 gradually increases. When the pressure of the high-pressure switch 33 is reached, the high-pressure switch 33 is tripped, the water inlet valve 21 and the water pump 22 stop working, and the raw water stops entering the filter device 1.

[0085] At this time, there is pressure on the pure water side, and the wastewater pipeline 5 is always open. Driven by the pressure difference, the pure water in the pure water storage device 41 passes through the flushing one-way valve 42 and enters the RO membrane of the filter device 1 from between the water pump 22 and the filter device 1, flushes out the concentrated water in front of the membrane, and flows out from the wastewater ratio integrated valve 51, thereby reducing the concentration of the wastewater in front of the membrane and improving the first cup of water problem.

[0086] When there is no pressure difference between the water pressure in the pure water storage device 41 and the waste water end, the flushing is stopped. At this time, due to the presence of the water outlet one-way valve 32, the high-pressure switch 33 is still in a high-pressure state, and the water inlet valve 21 and the water pump 22 are still out of work.

[0087] When the water outlet valve is opened again, the pressure in the water outlet pipe 3 decreases, the high pressure switch 33 closes, and the above process is repeated.

[0088] like Figure 2 As shown, in Figure 1 On this basis, a second flushing one-way valve 43 is additionally provided on the flushing pipeline between the pure water storage device 41 and the water outlet pipeline 3 , and the second flushing one-way valve 43 can allow the water of the water outlet pipeline 3 to flow to the pure water storage device 41 .

[0089] The opening pressure of the second flushing one-way valve 43 is greater than the opening pressure of the water outlet one-way valve 32 .

[0090] Since the opening pressure of the second flushing one-way valve 43 is large, when the water outlet valve 31 is opened, the water pressure cannot flush the second flushing one-way valve 43; in this way, when the water outlet valve 31 is opened to produce water, the pure water filtered by the filter device 1 is allowed to flow out through the water outlet pipe 3 and the water outlet valve 31 first, rather than entering the pure water storage device 41 first, avoiding the problem of long waiting time and poor user experience caused by too small water flow rate of the water outlet valve 31 when water production is just started.

[0091] After the water outlet valve 31 is closed, the pure water filtered by the filter device 1 flushes open the second flushing one-way valve 43 under the action of water pressure and enters the pure water storage device 41 .

[0092] exist Figure 3 、 4 In the example, a first reflux solenoid valve 44 is provided on the flushing pipeline 4 between the pure water storage device 41 and the water outlet pipeline 3. The first reflux solenoid valve 44 is closed when the water outlet valve 31 is opened and opened when the water outlet valve 31 is closed.

[0093] The flushing pipeline 4 is connected to the water outlet pipeline 3 between the water outlet check valve 32 and the water outlet valve 31 .

[0094] exist Figure 3 In the example, the flushing pipeline 4 is connected to the water outlet pipeline 3 between the water outlet check valve 32 and the high pressure switch 33.

[0095] exist Figure 4 In the example, the flushing pipeline 4 is connected to the water outlet pipeline 3 between the post-filter device 34 and the water outlet valve 31.

[0096] Water production process: When the outlet valve 31 is opened, the first reflux solenoid valve 44 is closed, the outlet pipe 3 is almost pressure-free, the high-pressure switch 33 is closed, the inlet valve 21 and the water pump 22 are working, and the raw water enters the pre-filter device 23, flows through the inlet valve 21 after being purified by the pre-filter device 23, and then enters the filter device 1 after being pressurized by the water pump 22. The pure water filtered by the filter device 1 is discharged through the pure water port and can enter the outlet pipe 3, and flows out from the outlet valve 31 through the outlet one-way valve 32 and the high-pressure switch 33. Since the first reflux solenoid valve 44 is closed, at this time, the pure water will not enter the pure water storage device 41, but will flow out through the outlet valve 31; the wastewater generated by the filter device 1 flows out of the filter device 1 through the wastewater port.

[0097] When the water outlet valve 31 is closed, the first reflux solenoid valve 44 is opened, the pure water storage device 41 is replenished with water, and the pressure of the high-pressure switch 33 gradually increases. When the pressure of the high-pressure switch 33 is reached, the high-pressure switch 33 is tripped, the water inlet valve 21 and the water pump 22 stop working, the first reflux solenoid valve 44 is closed, and the raw water stops entering the filter device 1.

[0098] At this time, there is pressure on the pure water side, and the wastewater pipeline 5 is always open. Driven by the pressure difference, the pure water in the pure water storage device 41 passes through the flushing one-way valve 42 and enters the RO membrane of the filter device 1 from between the water pump 22 and the filter device 1, flushes out the concentrated water in front of the membrane, and flows out from the wastewater ratio integrated valve 51, thereby reducing the concentration of the wastewater in front of the membrane and improving the first cup of water problem.

[0099] When there is no pressure difference between the water pressure in the pure water storage device 41 and the waste water end, the flushing stops. At this time, due to the presence of the water outlet one-way valve and the closing of the first reflux electromagnetic valve 44, the high-pressure switch 33 is still in a high-pressure state, and the water inlet valve 21 and the water pump 22 are still stopped.

[0100] When the water outlet valve is opened again, the first reflux solenoid valve 44 is closed, the pressure in the water outlet pipeline 3 is reduced, the high pressure switch 33 is closed, and the above process is repeated.

[0101] The first reflux solenoid valve 44 allows water to flow out only through the water outlet valve 31 when the water outlet valve 31 is opened, without entering the flushing pipeline 4, thereby avoiding water outlet delay.

[0102] exist Figure 5 、 6 In the example, a second reflux solenoid valve 45 is provided on the flushing pipeline 4 between the pure water storage device 41 and the water inlet pipeline 2. The second reflux solenoid valve 45 is closed when the water outlet valve 31 is opened and is opened when the high-pressure switch 33 is disconnected.

[0103] The flushing pipeline 4 is connected to the water outlet pipeline 3 between the filter device 1 and the water outlet one-way valve 32 .

[0104] exist Figure 5 In the example, the flushing pipeline 4 is connected to the water inlet pipeline 2 before the water pump 22, specifically connected between the water inlet valve 21 and the water pump 22.

[0105] exist Figure 6 In the example, the flushing pipeline 4 is connected to the water inlet pipeline 2 after the water pump 22, specifically connected between the water pump 22 and the filtering device 1.

[0106] Water production process: When the water outlet valve 31 is opened, the second reflux solenoid valve 45 is closed, the water outlet pipe 3 is almost pressure-free, the high-pressure switch 33 is closed, the water inlet valve 21 and the water pump 22 are working, and the raw water enters the pre-filter device 23, flows through the water inlet valve 21 after being purified by the pre-filter device 23, and then enters the filter device 1 after being pressurized by the water pump 22. The pure water filtered by the filter device 1 is discharged through the pure water port and can enter the water outlet pipe 3, and flows out of the water outlet valve 31 through the water outlet check valve 32 and the high-pressure switch 33. The wastewater generated by the filter device 1 flows out of the filter device 1 through the wastewater port.

[0107] When the water outlet valve 31 is closed, the pure water storage device 41 is replenished with water, and the pressure of the high-pressure switch 33 gradually increases. When the pressure of the high-pressure switch 33 is reached, the high-pressure switch 33 is tripped, the water inlet valve 21 and the water pump 22 stop working, the raw water stops entering the filter device 1, and the second reflux solenoid valve 45 is opened.

[0108] At this time, there is pressure on the pure water side, and the wastewater pipeline 5 is always open. Driven by the pressure difference, the pure water in the pure water storage device 41 enters the water pump through the flushing one-way valve 42 and the second reflux solenoid valve 45, flushes out the concentrated water in front of the membrane, and flows out from the wastewater ratio integrated valve 51, thereby reducing the concentration of the wastewater in front of the membrane and improving the first cup of water problem.

[0109] When there is no pressure difference between the water pressure in the pure water storage device 41 and the waste water end, the flushing is stopped. At this time, due to the presence of the water outlet one-way valve 32, the high-pressure switch 33 is still in a high-pressure state, and the water inlet valve 21 and the water pump 22 are still out of work.

[0110] When the water outlet valve 31 is opened again, the second reflux solenoid valve 45 is closed, the pressure in the water outlet pipe 3 is reduced, the high pressure switch is closed, and the above process is repeated.

[0111] like Figure 7-8 As shown, a water purification device includes a housing 6, a mounting body 7, a water channel assembly 8 and the above-mentioned water purification system.

[0112] The installation body 7 is located in the shell 6 , and the installation body 7 forms a filter device installation cavity 71 . The filter device is arranged in the filter device installation cavity 71 , and the pre-filter device water pump 22 and the pure water storage device 41 are installed on the top of the installation body 7 .

[0113] The filtering device includes a filtering device 1 , a pre-filtering device 23 and a post-filtering device 34 .

[0114] In some embodiments, the pre-filter device 23 and the post-filter device 34 become a pre- and post-composite filter element 23 - 34 to save space.

[0115] The water channel assembly 8 is installed on the installation body 7 and is connected to the water channel of the filtering device; the water inlet valve 21 is installed on the water channel assembly 8.

[0116] The water pump 22 and the pure water storage device 41 are arranged along the installation direction of the filter device, and the pure water storage device 41 is installed near the water channel assembly 8. A recess 411 is provided at the bottom of the pure water storage device 41, and the water inlet valve 21 is disposed within the recess 411, or at least a portion of the water channel assembly 8 is disposed within the recess 411. As a result, the overall design of the water purification device is more compact, improving the utilization of the internal space of the housing 6 and reducing the overall size of the device.

[0117] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A water purification system comprising: Filter device, including water inlet, pure water inlet and waste water inlet; A water inlet pipe is connected to the water inlet, and is provided with a water inlet valve and a water pump: A water outlet pipe connected to the pure water outlet; Characterized in that the water purification system comprises: A flushing pipeline connected to the water inlet pipeline and the water outlet pipeline; A pure water storage device is located on the flushing pipeline; a flushing one-way valve, located on the flushing pipeline between the pure water storage device and the water inlet pipeline, the flushing one-way valve enabling water from the pure water storage device to flow to the water inlet pipeline; a water outlet valve connected to the water outlet pipeline; a water outlet one-way valve, located on the water outlet pipeline, capable of allowing water from the pure water outlet to flow toward the water outlet valve; A high-pressure switch is located on the water outlet pipe; the water inlet valve and the water pump are controlled by the high-pressure switch; When the water outlet valve is opened, the high-pressure switch is closed, the water inlet valve and the water pump are working, and the water from the pure water outlet is discharged through the water outlet valve; When the water outlet valve is closed and the high-pressure switch is on, the water inlet valve and the water pump work, and the water from the pure water inlet enters the pure water storage device; when the high-pressure switch is disconnected, the water inlet valve and the water pump stop working, and the water from the pure water storage device enters the filter device through the water inlet and is discharged from the wastewater outlet.

2. The water purification system according to claim 1, characterized in that: A second flushing one-way valve is provided on the flushing pipeline between the pure water storage device and the water outlet pipeline, and the second flushing one-way valve can allow the water in the water outlet pipeline to flow to the pure water storage device; or a first reflux solenoid valve is provided on the flushing pipeline between the pure water storage device and the water outlet pipeline, and the first reflux solenoid valve is closed when the water outlet valve is opened and opened when the water outlet valve is closed.

3. The water purification system according to claim 2, characterized in that: The opening pressure of the second flushing one-way valve is greater than the opening pressure of the water outlet one-way valve.

4. The water purification system according to claim 1, characterized in that: The flushing pipeline is connected to the water outlet pipeline between the filter device and the water outlet one-way valve, or the flushing pipeline is connected to the water outlet pipeline between the water outlet one-way valve and the water outlet valve.

5. The water purification system according to claim 1, characterized in that: A second reflux solenoid valve is provided on the flushing pipeline between the pure water storage device and the water inlet pipeline. The second reflux solenoid valve is closed when the water outlet valve is opened and is opened when the high-pressure switch is disconnected.

6. The water purification system according to claim 1, characterized in that: The flushing pipeline is connected to the water inlet pipeline in front of the water pump, and a reflux solenoid valve is provided on the flushing pipeline between the pure water storage device and the water inlet pipeline; alternatively, the flushing pipeline is connected to the water inlet pipeline after the water pump.

7. The water purification system according to claim 1, characterized in that: The water inlet pipe is provided with a pre-filtering device, and the water outlet pipe is provided with a post-filtering device.

8. The water purification system according to claim 7, characterized in that: The flushing pipeline is connected to the water outlet pipeline between the filter device and the post-filter device, or the flushing pipeline is connected to the water outlet pipeline between the post-filter device and the water outlet valve.

9. The water purification system according to claim 7, characterized in that: The post-filter device is located between the water outlet one-way valve and the water outlet valve; the flushing pipeline is connected to the water outlet pipeline between the filter device and the post-filter device, or the flushing pipeline is connected to the water outlet pipeline between the post-filter device and the water outlet valve.

10. A water purification device, characterized in that: The water purification device comprises: The water purification system according to any one of claims 1 to 9; shell; An installation body is located in the housing, the installation body forms a filter device installation cavity, the filter device is arranged in the filter device installation cavity, and the water pump and the pure water storage device are installed on the top of the installation body; A water channel assembly is installed on the installation body and is connected to the water channel of the filter device; the water inlet valve is installed on the water channel assembly.

11. A water purification device according to claim 10, characterized in that: The water pump and the pure water storage device are arranged along the installation direction of the filtering device, and the pure water storage device is installed close to the water channel assembly; a recess is provided at the lower part of the pure water storage device, and the water inlet valve is provided in the recess, or at least part of the water channel assembly is provided in the recess.

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