Water purification device, water purification system, filter cartridge structure of filtration device, and cover body assembly

Abstract

The present application provides a water purification device and a water purification system. The water purification system comprises a filtration device, a water inlet piping system, a water outlet piping system, and a flushing piping system. The water inlet piping system is provided with a water inlet valve and a water pump; the flushing piping system is provided with a pure water storage device and a flushing check valve; and the water outlet piping system is provided with a water outlet check valve, a high-pressure switch, and a water outlet valve, wherein 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 in a closed state, the water inlet valve and the water pump operate, and pure water is discharged by means of the water outlet valve; and when the water outlet valve is closed and the high-pressure switch is in the closed state, the water inlet valve and the water pump operate, the pure water enters the pure water storage device, and when the high-pressure switch is in an opened state, the water inlet valve and the water pump stop operating, and water from the pure water storage device flushes the filtration device. In the present application, water outflow or flushing of the water purification device can be controlled by means of the water outlet valve, and the water outlet valve can be operated to control water outflow and flushing states, so that few electrical components are needed, thereby reducing the costs and reducing the failure rate and maintenance rate caused by the electrical components.

Description

Filter core structure and cover assembly of a water purifying device, water purifying system and filter device

[0001] The present application claims priority to the patent application No. 2024224085104, filed on September 30, 2024, with the China National Intellectual Property Office and entitled "A water purifying device and water purifying system"; the patent application No. 202422412563.3, filed on September 30, 2024, with the China National Intellectual Property Office and entitled "A water purifying device and filter core structure"; the patent application No. 202422408527.X, filed on September 30, 2024, with the China National Intellectual Property Office and entitled "A water purifying device, filter core structure and cover assembly"; and the patent application No. 2024224085509, filed on September 30, 2024, with the China National Intellectual Property Office and entitled "A water purifying device and horizontal filter core structure". TECHNICAL FIELD

[0002] The present application belongs to the technical field of water purification, and particularly relates to a water purifying device and water purifying system. BACKGROUND

[0003] The water purifying device comprises a filter device, and the filter device is used to filter impurities in water. After the water purifying device is shut down, raw water on the raw water side of the filter device and concentrated water that is not discharged will naturally penetrate to the pure water side, resulting in a problem of high TDS value of the pure water side, i.e., the first cup of water problem.

[0004] The prior art generally sets a flushing pipeline to flush the raw water in the filter device to avoid the problem of high TDS value of the first cup of water. The existing water purifying system adds controller and solenoid valve and other controller devices to control the water purifying device to be in a water outlet state or a flushing state. The water purifying system has more electrical components, which increases the failure rate and maintenance rate of the electrical components.

[0005] The above information disclosed in the background section of this specification is only for the purpose of increasing an understanding of the background of the present application, and therefore, it can include matters known by those skilled in the art. SUMMARY

[0006] The present application proposes a water purifying device and water purifying system to solve the technical problem of high failure rate and maintenance rate of the water purifying device due to many electrical components.

[0007] The water outlet valve can control the water outlet or flushing of the water purifying device, when the water outlet valve is opened, the water purifying device normally outlets water, when the water outlet valve is closed, the water purifying device stops water outlet and gradually increases the pressure of the water outlet pipeline, when the pressure value of the high-pressure switch is less than the take-off pressure, the water outlet of the filter device enters the pure water storage device, when the pressure value of the high-pressure switch is greater than the take-off 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 pipeline and is discharged from the waste water outlet of the filter device. The action of the electromagnetic valve and the water pump of the water purifying device is controlled by the high-pressure switch, and the user can control the water outlet and flushing state of the water purifying device by only operating the water outlet valve, so that the number of electrical components is small, the cost is saved, and the failure rate and maintenance rate caused by the electrical components are reduced.

[0008] The water purifying device comprises a shell, a mounting body and a waterway assembly, the mounting body is located in the shell, the mounting body forms a filter device mounting cavity, the filter device is arranged in the filter device mounting cavity, and the water pump and the pure water storage device are mounted on the top of the mounting body; the waterway assembly is mounted on the mounting body and communicates with the waterway of the filter device; and the water inlet valve is mounted on the waterway assembly. The waterway assembly, the filter device, the water pump and the pure water storage device of the water purifying device are all mounted on the mounting body, so that the assembly is convenient, the structure is compact, the space utilization rate is improved, and the size of the water purifying device is reduced.

[0009] The filter core structure of the present application is provided with a non-cylindrical columnar protrusion as a positioning connector on the end face of the filter core shell, which can realize positioning after installation of the filter core structure, avoid rotation, improve stability, provide the filter core structure with a shell water outlet, and seal the shell water outlet or at least partially locate the shell water outlet in the shell water outlet, so as to realize the effect of positioning and sealing.

[0010] The water purifying device is provided with a positioning structure matched with the shape of the positioning connector, which can be stably assembled with the filter core structure and will not rotate relative to each other.

[0011] The cover assembly of the filter device of the present application positions the filter core shell through the first groove, determines the installation position for the user, positions the cover through the second groove, and when the positioning structure cooperates with the first limiting structure or the second limiting structure, it indicates that the filter core is installed or disassembled in place, improves the accuracy and convenience of the user when installing or disassembling the filter core, prevents damage to the filter core or the water purifying device caused by excessive rotation, avoids misoperation to a certain extent, and further improves the safety and user experience of the product.

[0012] The transverse filter core structure comprises a filter core and a filter core shell, the filter core shell forms a filter core cavity, the filter core is located in the filter core cavity, the filter core shell is provided with a shell outlet, and a water outlet cavity is formed between the filter core and the filter core shell.

[0013] The water purifying device comprises a shell, a transverse filter core structure is installed in the shell, the transverse filter core structure comprises a filter core and a filter core shell, the filter core shell forms a filter core cavity, the filter core is located in the filter core cavity, the filter core shell is provided with a shell outlet, and a water outlet cavity is formed between the filter core and the filter core shell.

[0014] Other features and advantages of the present application will become more apparent from the following specific embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0016] Fig. 1 is a schematic view of a first embodiment of the water purifying system of the present application.

[0017] Fig. 2 is a schematic view of a second embodiment of the water purifying system of the present application.

[0018] Fig. 3 is a schematic view of a third embodiment of the water purifying system of the present application.

[0019] Fig. 4 is a schematic view of a fourth embodiment of the water purifying system of the present application.

[0020] Fig. 5 is a schematic view of a fifth embodiment of the water purifying system of the present application.

[0021] Fig. 6 is a schematic diagram of a sixth embodiment of the water purifying system of the present application.

[0022] Fig. 7 is a schematic diagram of a water purifying device of an embodiment of the present application without the shell.

[0023] Fig. 8 is an exploded view of the water purifying device of an embodiment of the present application.

[0024] Fig. 9 is a schematic diagram of a filter core structure of an embodiment of the present application.

[0025] Fig. 10 is a side view of Fig. 9.

[0026] Fig. 11 is an exploded view of the filter core structure.

[0027] Fig. 12 is a sectional view along the line A-A of Fig. 10.

[0028] Fig. 13 is a side view of a filter core structure of another embodiment of the present application.

[0029] Fig. 14 is a sectional view along the line B-B of Fig. 13.

[0030] Fig. 15 is a sectional view along the line C-C of Fig. 13.

[0031] Figs. 16-19 are side views of a filter core structure of yet another embodiment of the present application.

[0032] Fig. 20 is an exploded view of the filter core structure and the waterway assembly of the water purifying device of the present application.

[0033] Fig. 21 is a schematic diagram of the waterway assembly.

[0034] Fig. 22 is a schematic diagram of a cover assembly of an embodiment of the present application.

[0035] Fig. 23 is a schematic diagram of a cover of an embodiment of the present application.

[0036] Fig. 24 is a schematic diagram of a shell of an embodiment of the present application.

[0037] Fig. 25 is a longitudinal schematic diagram of a cover assembly of an embodiment of the present application.

[0038] Fig. 26 is a sectional view at the cover and the shell in an unlocked state of an embodiment of the present application.

[0039] Fig. 27 is a sectional view at the cover and the shell in a locked state of an embodiment of the present application.

[0040] Fig. 28 is a schematic diagram of a shell of a water purifying device of an embodiment of the present application.

[0041] Fig. 29 is a sectional view of a horizontally placed filter core structure of an embodiment of the present application.

[0042] Fig. 30 is a partial enlarged view of Fig. 29.

[0043] Fig. 1, filter device; 2, water inlet pipeline; 21, water inlet valve; 22, water pump; 23, pre-filter device; 3, water outlet pipeline; 31, water outlet valve; 32, water outlet check valve; 33, high-pressure switch; 34, post-filter device; 4, flushing pipeline; 41, pure water storage device; 411, recess; 42, flushing check valve; 43, second flushing check valve; 44, first backflow electromagnetic valve; 45, second backflow electromagnetic valve; 5, waste water pipeline; 51, waste water and water integrated valve; 6, shell; 7, mounting body; 71, filter device mounting cavity; 8, waterway assembly; 91, air supplement device; 92, air supplement check valve; 10, filter element shell; 11, positioning joint; 12, shell water port; 121, shell raw water inlet; 122, shell pure water outlet; 123, shell waste water outlet; 124, check valve; 125, pre-inlet; 126, pre-outlet; 127, post-inlet; 128, post-outlet; 13, sealing element; 14, press-fit element; 141, opening; 20, filter element; 210, center tube; 2110, pure water cavity; 220, filter element body; 230, first end cover; 2310, filter element raw water inlet; 2320, filter element waste water outlet; 240, second end cover; 201, inner flow guide part; 2011, post-outlet cavity; 202, outer flow guide part; 2021, outer flow guide tube; 2022, containing part; 203, pre-filter element body; 204, post-filter element body; 205, post-inlet passage; 206, pre-inlet passage; 207, pre-outlet cavity; 208, end cover; 81, positioning structure; 82, cylindrical interface; 110, first limiting structure; 111, first stop part; 112, first limiting part; 120, second limiting structure; 1210, second stop part; 1220, second limiting part; 130, positioning lug; 140, limiting groove; 15, second clamping structure; 16, filter element cavity; 72, cover body; 721, positioning structure; 7211, first positioning part; 7212, second positioning part; 72112, second positioning base body; 7213, third positioning part; 72131, first positioning base body; 722, lug; 723, handle; 724, first clamping structure; 711, first recess; 712, second recess; 1300, joint; 134, second connecting part; 2211, waste water cavity; 222, center tube; 2221, clean water cavity; 2222, through hole; 230, first end cover; 240, second end cover; 231, raw water passage; 232, first connecting part; 30, avoiding opening. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0045] In the description of the application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the positional or relative relationship shown in the drawings. The terms are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the features with "first", "second" can explicitly or implicitly include one or more of the features.

[0046] In this application, unless specifically defined and limited otherwise, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate media, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0047] In this application, unless specifically defined and limited otherwise, the first feature "on" or "under" the second feature can include the first and second features in direct contact, or the first and second features not in direct contact but in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is less than the second feature in horizontal height.

[0048] The following disclosure provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0049] As shown in FIG. 1, the water purification system comprises a filter device 1, a water inlet pipeline 2 connected with the filter device 1, a water outlet pipeline 3, a flushing pipeline 4 and a waste water pipeline 5. The water inlet pipeline 2 is sequentially provided with a water inlet valve 21 and a water pump 22 in the water flow direction. The water outlet pipeline 3 is sequentially provided with a water outlet check valve 32, a high-pressure switch 33 and a water outlet valve 31 in the water flow direction. The flushing pipeline 4 is sequentially provided with a pure water storage device 41 and a flushing check valve 42 in the water flow direction. The filter device 1 is a reverse osmosis membrane filter core. The filter device 1 comprises a water inlet, a pure water outlet and a waste water outlet. The water inlet pipeline 2 is connected with the water inlet of the filter device 1, and the water inlet pipeline 2 is used for feeding water to the filter device 1. One end of the water inlet pipeline 2 is connected with raw water, and the other end is connected with the water inlet of the filter device 1. The water inlet valve 21 can realize the conduction and cut-off of the water inlet pipeline 2, and the water inlet valve 21 is an electromagnetic valve. The water pump 22 is used for providing the water inlet power of the water inlet pipeline 2, and preferably, the water pump 22 is a booster pump. The water outlet pipeline 3 is connected with the pure water outlet of the filter device 1, and the pure water generated by the filter device 1 is discharged. The water outlet valve 31 is connected with the water outlet pipeline 3, and the water outlet valve 31 is a mechanical valve or an electromagnetic valve located on the water outlet pipeline 3. When the water outlet valve 31 is opened, the water outlet pipeline 3 is conducted to realize water outlet, and when the water outlet valve 31 is closed, the water outlet pipeline 3 is cut off to stop water outlet. The water outlet check valve 32 is located on the water outlet pipeline 3, and the water outlet check valve 32 can make the water flow from the pure water outlet of the filter device 1 to the water outlet valve 31. The high-pressure switch 33 is located on the water outlet pipeline 3, and the high-pressure switch 33 is located 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. The flushing pipeline 4 is connected with the water inlet pipeline 2 and the water outlet pipeline 3. The water outlet end of the flushing pipeline 4 is connected between the water pump 22 and the filter device 1 on the water inlet pipeline 2, and the water inlet end of the flushing pipeline 4 is connected between the filter device 1 and the water outlet check valve 32 on the water outlet pipeline 3.

[0050] The pure water storage device 41 is located on the flushing pipeline 4, and the pure water storage device 41 is used for storing pure water. The flushing check valve 42 is located on the flushing pipeline 4 between the pure water storage device 41 and the water inlet pipeline 2, and the flushing check valve 42 can make the water flow from the water outlet pipeline 3 to the water inlet pipeline 2, and avoid the raw water of the water inlet pipeline 2 entering the pure water storage device 41. The waste water outlet of the filter device 1 is connected with the waste water pipeline 5, and the waste water pipeline 5 is used for discharging the waste water of the filter device 1. A waste water check valve 51 is arranged on the waste water pipeline 5. When the water outlet valve 31 is opened, the water pressure at the high-pressure switch 33 is reduced, the high-pressure switch 33 is closed, the water inlet valve 21 and the water pump 22 are actuated to work, and the pure water filtered by the filter device 1 is discharged through the water outlet valve 31.

[0051] In the initial stage of the closing of the outlet valve 31, the pressure at the high-pressure switch 33 does not reach the take-off pressure, and when the high-pressure switch 33 is closed, the inlet valve 21 and the water pump 22 continue to work, the filtered pure water of the filtering device 1 enters the pure water storage device 41, and the pressure of the high-pressure switch 33 increases with the increase of the water amount in the pure water storage device 41 to the take-off pressure, and when the high-pressure switch 33 is opened, the inlet valve 21 and the water pump 22 stop working, and under the drive of the water pressure, the water in the pure water storage device 41 enters the filtering device 1 through the inlet pipeline 2 and discharges the raw water before the membrane of the filtering device 1 from the waste water outlet, so that the water before the membrane of the filtering device 1 is replaced by pure water, avoiding the problem that the concentrated water on the raw water side penetrates to the pure water side, resulting in that the TDS of the first cup of water is too high.

[0052] The inlet pipeline 2 is provided with a pre-filtering device 23, and the pre-filtering device 23 is located between the water inlet end of the inlet pipeline 2 and the inlet valve 21. The outlet pipeline 3 is provided with a post-filtering device 34, and the post-filtering device 34 is located between the outlet one-way valve 32 and the outlet valve 31, and further, the post-filtering device 34 is located between the high-pressure switch 33 and the outlet valve 31. The flushing pipeline 4 is connected to the outlet pipeline 3 between the filtering device 1 and the post-filtering device 34, and further, the flushing pipeline 4 is connected to the outlet pipeline 3 between the filtering device 1 and the outlet one-way valve 32.

[0053] The water making process is as follows: when the outlet valve 31 is opened, the outlet pipeline 3 is almost under no pressure, the high-pressure switch 33 is closed, the inlet valve 21 and the water pump 22 work, the raw water enters the pre-filtering device 23, flows through the inlet valve 21 after being purified by the pre-filtering device 23, and then enters the filtering device 1 after being pressurized by the water pump 22, the pure water filtered by the filtering device 1 is discharged through the pure water outlet and enters the outlet pipeline 3, and flows out from the outlet valve 31 through the outlet one-way valve 32 and the high-pressure switch 33, since the outlet pipeline 3 is almost under no pressure, at this time, the pure water will not enter the pure water storage device 41, but flow out through the outlet valve 31, and the waste water generated by the filtering device 1 flows out of the filtering device 1 through the waste water outlet.

[0054] When the outlet valve 31 is closed, the pure water storage device 41 is replenished with water, the pressure of the high-pressure switch 33 gradually increases, and when the pressure reaches the take-off pressure of the high-pressure switch 33, the high-pressure switch 33 is taken off, the inlet valve 21 and the water pump 22 stop working, and the raw water stops entering the filtering device 1. At this time, the pure water side has pressure, the waste water pipeline 5 is always open, and under the drive of the pressure difference, the pure water in the pure water storage device 41 enters the RO membrane before the filtering device 1 from between the water pump 22 and the filtering device 1 through the flushing one-way valve 42, and flushes away the concentrated water before the membrane, and flows out from the waste water and valve 51, so as to reduce the concentration of the waste water before the membrane and improve the problem of the first cup of water. 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 existence of the outlet one-way valve 32, the high-pressure switch 33 is still under high pressure, and the inlet valve 21 and the water pump 22 still stop working.

[0055] When the water outlet valve is opened again, the pressure of the water outlet pipeline 3 is reduced, the high-pressure switch 33 is closed, and the above process is repeated.

[0056] As shown in FIG. 2, on the basis of FIG. 1, a second flushing one-way valve 43 is arranged 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 make the water flow of the water outlet pipeline 3 to the pure water storage device 41. 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. Because the opening pressure of the second flushing one-way valve 43 is greater, when the water outlet valve 31 is opened, the water pressure cannot open the second flushing one-way valve 43. Thus, when the water outlet valve 31 is opened to produce water, the pure water filtered by the filtering device 1 is preferentially discharged through the water outlet pipeline 3 and the water outlet valve 31, rather than first entering the pure water storage device 41, thereby avoiding the problem of long waiting time and poor user experience caused by too small water flow of the water outlet valve 31 at the beginning of water production. After the water outlet valve 31 is closed, the pure water filtered by the filtering device 1 opens the second flushing one-way valve 43 under the action of water pressure and enters the pure water storage device 41.

[0057] In the examples of FIGS. 3 and 4, a first backflow electromagnetic valve 44 is arranged on the flushing pipeline 4 between the pure water storage device 41 and the water outlet pipeline 3, and the first backflow electromagnetic valve 44 is closed when the water outlet valve 31 is opened and is opened when the water outlet valve 31 is closed. The flushing pipeline 4 is connected to the water outlet pipeline 3 between the water outlet one-way valve 32 and the water outlet valve 31. In the example of FIG. 3, the flushing pipeline 4 is connected to the water outlet pipeline 3 between the water outlet one-way valve 32 and the high-pressure switch 33. In the example of FIG. 4, the flushing pipeline 4 is connected to the water outlet pipeline 3 between the post-filtering device 34 and the water outlet valve 31.

[0058] Water production process: when the water outlet valve 31 is opened, the first backflow electromagnetic valve 44 is closed, the water outlet pipeline 3 has almost no pressure, the high-pressure switch 33 is closed, the water inlet valve 21 and the water pump 22 work, raw water enters the pre-filtering device 23, flows through the water inlet valve 21 after being purified by the pre-filtering device 23, and then enters the filtering device 1 after being pressurized by the water pump 22. The pure water filtered by the filtering device 1 is discharged through the pure water outlet and can enter the water outlet pipeline 3, flows out of the water outlet valve 31 through the water outlet one-way valve 32 and the high-pressure switch 33, and because the first backflow electromagnetic valve 44 is closed, the pure water does not enter the pure water storage device 41 but flows out through the water outlet valve 31; the waste water generated by the filtering device 1 flows out of the filtering device 1 through the waste water outlet.

[0059] When the outlet valve 31 is closed, the first backflow electromagnetic valve 44 is opened, the pure water storage device 41 is replenished, the pressure of the high-pressure switch 33 gradually increases, and when the high-pressure switch 33 reaches the take-off pressure, the high-pressure switch 33 is taken off, the water inlet valve 21 and the water pump 22 stop working, the first backflow electromagnetic valve 44 is closed, and the raw water stops entering the filter device 1. At this time, the pure water side has pressure, the waste water pipeline 5 is always open, and under the driving of the pressure difference, the pure water in the pure water storage device 41 enters the RO membrane of the filter device 1 through the flushing one-way valve 42, and the pre-membrane concentrated water is flushed away, flows out from the waste water and one valve 51, thereby reducing the pre-membrane waste water concentration and improving the first cup water problem.

[0060] 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 existence of the outlet one-way valve, the first backflow electromagnetic valve 44 is closed, and the high-pressure switch 33 is still in the high-pressure state, and the water inlet valve 21 and the water pump 22 are still stopped. When the outlet valve is opened again, the first backflow electromagnetic valve 44 is closed, the pressure of the outlet pipeline 3 is reduced, the high-pressure switch 33 is closed, and the above process is repeated. Through the first backflow electromagnetic valve 44, only the outlet valve 31 can be used to outlet water when the outlet valve 31 is opened, and the flushing pipeline 4 is avoided.

[0061] In the examples of FIGS. 5 and 6, the second backflow electromagnetic valve 45 is arranged on the flushing pipeline 4 between the pure water storage device 41 and the water inlet pipeline 2, and the second backflow electromagnetic valve 45 is closed when the outlet valve 31 is opened and is opened when the high-pressure switch 33 is disconnected. The flushing pipeline 4 is connected to the outlet pipeline 3 between the filter device 1 and the outlet one-way valve 32.

[0062] In the example of FIG. 5, the flushing pipeline 4 is connected to the water inlet pipeline 2 before the water pump 22, and specifically is connected between the water inlet valve 21 and the water pump 22. In the example of FIG. 6, the flushing pipeline 4 is connected to the water inlet pipeline 2 after the water pump 22, and specifically is connected between the water pump 22 and the filter device 1.

[0063] The water production process is as follows: when the outlet valve 31 is opened, the second backflow electromagnetic valve 45 is closed, the outlet pipeline 3 has almost no pressure, the high-pressure switch 33 is closed, the water inlet valve 21 and the water pump 22 work, 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, is pressurized by the water pump 22, enters the filter device 1, and the pure water filtered by the filter device 1 is discharged through the pure water outlet and enters the outlet pipeline 3, flows out from the outlet valve 31 through the outlet one-way valve 32 and the high-pressure switch 33, and the waste water generated by the filter device 1 flows out from the filter device 1 through the waste water outlet.

[0064] When the outlet valve 31 is closed, the pure water storage device 41 is replenished, the pressure of the high-pressure switch 33 gradually increases, and when the high-pressure switch 33 reaches the take-off pressure, the high-pressure switch 33 is taken off, the water inlet valve 21 and the water pump 22 stop working, the raw water stops entering the filter device 1, and the second backflow electromagnetic valve 45 is opened. At this time, the pure water side has pressure, the waste water pipeline 5 is always open, and under the driving of 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 backflow electromagnetic valve 45, flushes away the concentrated water in front of the membrane, flows out from the waste water and one valve 51, thereby reducing the concentration of waste water in front of the membrane and improving the first cup water problem. 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 existence of the 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 stopped. When the outlet valve 31 is opened again, the second backflow electromagnetic valve 45 is closed, the pressure of the outlet pipeline 3 is reduced, the high-pressure switch is closed, and the above process is repeated.

[0065] As shown in FIGS. 7-8, a water purifying device includes a shell 6, a mounting body 7, a waterway assembly 8, and the above-mentioned water purifying system. The mounting body 7 is located in the shell 6, and the mounting body 7 forms a filter device mounting cavity 71, the filter device is arranged in the filter device mounting cavity 71, and the pre-filter device water pump 22 and the pure water storage device 41 are mounted on the top of the mounting body 7. Among them, the filter device includes the filter device 1, the pre-filter device 23, and the post-filter device 34. In some embodiments, the pre-filter device 23 and the post-filter device 34 become a pre-post composite filter element 23-34 to save space. The waterway assembly 8 is mounted on the mounting body 7 and communicates with the filter device waterway; the water inlet valve 21 is mounted on the waterway assembly 8. The water pump 22 and the pure water storage device 41 are arranged along the mounting direction of the filter device, and the pure water storage device 41 is close to the waterway assembly 8; the lower part of the pure water storage device 41 is provided with a recess 411, and the water inlet valve 21 is arranged in the recess 411, or at least part of the waterway assembly 8 is arranged in the recess 411. Thus, the water purifying device is more compact in overall design, improves the utilization rate of the internal space of the shell 6, and reduces the overall volume.

[0066] Specifically, the water purification system further comprises a gas supplement device 91, which is used to communicate with or disconnect from the cavity of the pure water storage device 41, and is used to supplement gas into the pure water storage device 41. Specifically, when the pure water storage device 41 is used for a period of time, the water in the cavity of the pure water storage device 41 increases, and the air decreases, resulting in a decrease in the amount of pure water discharged and a decrease in the flushing effect. The gas supplement device 91 is connected to the control module of the water purification system. The water purification system determines the change of the amount of gas in the pure water storage device 41 according to the number of operations or the use time or the amount of water in the pure water storage device 41. When the system operates a predetermined number of times or uses a predetermined time or the pure water storage device 41 reaches a predetermined water amount, the control module controls the gas supplement device to open and supplement gas to the pure water storage device 41, so as to discharge the water in the pure water storage device 41 from the waste water ratio integrated valve 51 and restore the flushing function of the cavity of the pure water storage device 41. Specifically, after the gas supplement device is opened, the water in the pure water storage device 41 is discharged under the action of the gas supplement device and enters the filter device 1 through the flushing one-way valve 42 and the flushing waterway 4.

[0067] The gas supplement device and the pure water storage device 41 are provided with a gas supplement one-way valve 92, so that the gas reaches the pure water storage device 41 from the gas supplement device in one direction, and the water in the pure water storage device 41 is prevented from flowing into the gas supplement device.

[0068] The gas supplement device 91 is a gas supplement pump.

[0069] As shown in FIGS. 9-19, the filter device 1 comprises a filter core structure, which comprises a filter core shell 10 and a filter core 20 located in the filter core shell 10. The filter core shell 10 forms a filter core cavity, and the filter core 20 is located in the filter core cavity. The filter core shell 10 comprises a positioning connector 11, which is a columnar protrusion formed on the end face of the filter core shell 10, and the columnar protrusion is a non-cylindrical columnar protrusion. The positioning connector 11 is used to assemble with a filter core structure mounting member when the filter core structure is installed. The filter core structure mounting member is provided with a positioning groove matched with the shape thereof. The positioning connector 11 and the positioning groove are matched to realize the positioning of the filter core shell 10 and ensure the stability of the installation of the filter core shell 10. The columnar protrusion is provided with a shell water port 12, which is in fluid communication with the filter core 20. A sealing element 13 is arranged at the shell water port 12 and at least partially located in the shell water port 12. The sealing element 13 is used to realize the sealed connection of the shell water port 12 and the filter core structure mounting member. A one-way valve 124 is arranged in the shell water port 12.

[0070] As shown in FIG. 9, FIG. 10, and FIG. 13, the columnar protrusion comprises two parallel cylindrical surfaces and an arc surface connecting the two parallel cylindrical surfaces. The arc surface protrudes outward to maximize the end surface of the columnar protrusion, and the shell water port 12 can be arranged reasonably. In some embodiments, the columnar protrusion is an elliptic cylinder, as shown in FIG. 17.

[0071] In the examples of FIG. 9, FIG. 10, and FIG. 17, the shell water port 12 is arranged in the direction of the long axis of the end surface of the columnar protrusion. In the example of FIG. 13, the shell water port 12 is arranged in the direction of the long axis and the short axis of the end surface of the columnar protrusion, and the number of shell water ports 12 arranged in the direction of the long axis is greater than or equal to the number of shell water ports 12 arranged in the direction of the short axis. In the example of FIG. 16, at least two shell water ports 12 are provided on the top of the columnar protrusion, and the columnar protrusion has a shape that is adapted to the outer contour of the at least two shell water ports 12. In the example of FIG. 18, the cross section of the columnar protrusion is irregular. In the example of FIG. 19, the columnar protrusion is a polygonal column.

[0072] The sealing member 13 is a sealing ring arranged on the inner wall of the shell water port 12, and the opening inner diameter of the shell water port 12 is greater than the inner diameter of the sealing ring and less than the outer diameter of the sealing ring. In order to prevent the sealing ring from falling off, a press-fitting member 14 is provided on the end of the columnar protrusion to press-fit the sealing ring, and the press-fitting member 14 is provided with an opening 141 corresponding to the position of the shell water port 12. The press-fitting member 14 is assembled with the columnar protrusion. The columnar protrusion is provided with a groove for mounting the press-fitting member 14, and the sealing member 13 is in sealing contact with the press-fitting member 14.

[0073] In the examples of FIG. 9-FIG. 12, the shell water port 12 comprises a shell raw water inlet 121, a shell pure water outlet 122, and a shell wastewater outlet 123, and the filter cartridge 20 is a reverse osmosis membrane filter cartridge.

[0074] The filter cartridge 20 comprises a center tube 210, a filter cartridge body 220, a first end cap 230, and a second end cap 240. The center tube 210 has a pure water cavity 2110, and the pure water cavity 2110 is in communication with the shell pure water outlet 122. The filter cartridge body 220 is sleeved on the center tube 210. The center tube 210 has a through hole for communicating the pure water cavity 2110 and the filter cartridge body 220. The first end cap 230 is located at the end of the filter cartridge body 220 close to the positioning joint 11. The first end cap 230 is provided with a filter cartridge raw water inlet 2310, and the filter cartridge raw water inlet 2310 is in communication with the shell raw water inlet 121. The first end cap 230 and the filter cartridge shell 10 form a filter cartridge wastewater outlet 2320, and the filter cartridge wastewater outlet 2320 is in communication with the shell wastewater outlet 123. The second end cap 240 is located at the other end of the filter cartridge body 220 and the center tube 210, and is used to close the filter cartridge body 220 and the center tube 210.

[0075] When filtering, raw water enters the shell raw water inlet 121, enters the filter core body 220 through the filter core raw water inlet 2310 of the first end cover 230, and is filtered by the filter core body 220. The pure water generated by the filter core body 220 enters the pure water cavity 2110 through the through hole on the center tube 210 and is discharged through the shell pure water outlet 122. The waste water generated by the filter core body 220 enters the waste water cavity between the outer periphery of the filter core body 220 and the filter core shell 10, enters the shell waste water outlet 123 through the filter core waste water outlet 2320, and is discharged through the shell waste water outlet 123.

[0076] In the examples of FIGS. 13-15, the shell water port 12 includes a front water inlet 125, a front water outlet 126, a rear water inlet 127, and a rear water outlet 128, and the filter core 20 is a composite filter core.

[0077] The filter core 20 includes an inner flow guide part 201, an outer flow guide part 202, a front filter core body 203, and a rear filter core body 204. The inner flow guide part 201 has a rear water outlet cavity 2011 formed inside, and the rear water outlet cavity 2011 is in communication with the rear water outlet 128. The outer flow guide part 202 includes an outer flow guide tube 2021 and a containing part 2022, and the inner diameter of the containing part 2022 is greater than the inner diameter of the outer flow guide tube 2021. The outer flow guide tube 2021 is sleeved on the outside of the inner flow guide part 201, and a rear water inlet passage 205 is formed between the inner flow guide part 201 and the outer flow guide tube 2021, and the rear water inlet passage 205 is in communication with the rear water inlet 127. The front filter core body 203 is sleeved on the outer flow guide tube 2021, a front water inlet passage 206 is formed between the front filter core body 203 and the filter core shell 10, and the front water inlet passage 206 is in communication with the front water inlet 125. A front water outlet cavity 207 is formed between the front filter core body 203 and the outer flow guide tube 2021, and the front water outlet cavity 207 is in communication with the front water outlet 126. The rear filter core body 204 is located in the containing part 2022, and the open end of the containing part 2022 is sealed by an end cover 208. The outer periphery of the rear filter core body 204 is in communication with the rear water inlet passage 205, and the inside of the rear filter core body 204 is in communication with the rear water outlet cavity 2011. The rear filter core body 204 is arranged separately from the front filter core body 203. When the front filter core body 203 is filtering, raw water enters the front water inlet passage 206 from the front water inlet 125, is filtered by the front filter core body 203, and the filtered water enters the front water outlet cavity 207 and is discharged through the front water outlet 126.

[0078] When the rear filter core body 204 is filtering, water enters the rear water inlet passage 205 from the rear water inlet 127, enters the outer periphery of the rear filter core body 204, is filtered by the rear filter core body 204, and the filtered water enters the space surrounded by the rear filter core body 204, enters the rear water outlet cavity 2011, and is discharged through the rear water outlet 128.

[0079] As shown in FIG. 17, FIG. 19, a water purifying device comprises a shell, the shell is provided with the filter core structure as described above, and the shell is provided with a positioning structure 81 matched with the shape of the positioning connector 11. Specifically, the waterway assembly 8 is arranged in the shell, and the groove is arranged on the waterway assembly 8 as the positioning structure 81. The shape of the positioning connector 11 is matched with the shape of the groove, and the cylindrical interface 82 is arranged in the groove and is in sealing connection with the sealing element 13 of the positioning connector 11.

[0080] As shown in FIG. 20 and FIG. 21, when the filter core structure is installed on the waterway assembly 8 in the shell, the positioning connector 11 is inserted into the positioning structure 81, and the two are stably assembled. At the same time, the cylindrical interface 82 is in sealing connection with the sealing element 13 in the shell water port 12, thereby ensuring the sealing effect.

[0081] As shown in FIG. 22-FIG. 27, the cover body 72 assembly comprises the filter core shell 10 and the cover body 72. The filter core shell 10 is the filter core shell 10 of the filter core structure. The cover body 72 is located on the filter core shell 10 and is rotatably installed with the filter core shell 10. Specifically, the cover body 72 is located at the end of the filter core shell 10. The filter core shell 10 is cylindrical, and the filter core shell 10 has two ends, the first end is provided with a water port, and the second end is a closed end, and the cover body 72 is located at the second end. The first limiting structure 110 and the second limiting structure 120 are arranged on one of the filter core shell 10 and the cover body 72, and the positioning structure 721 is arranged on the other of the filter core shell 10 and the cover body 72, and the rotation range of the positioning structure 721 is limited between the first limiting structure 110 and the second limiting structure 120.

[0082] When the positioning structure 721 is rotated to the first limiting structure 110, the cover body 72 and the cover body 72 assembly of the water purifying device are unlocked, and when the positioning structure 721 is rotated to the second limiting structure 120, the cover body 72 and the cover body 72 assembly are locked. By arranging the positioning structure 721, the first limiting structure 110 and the second limiting structure 120, when the cover body 72 is rotated to the unlocked and locked states, obvious hand feeling feedback can be generated, which can prompt the user that the installation is in place or the unlocking is in place, thereby ensuring the accuracy, convenience and reliability of the installation and disassembly process. At the same time, the structure simplifies the operation steps of the user, improves the use experience, reduces the risk of failure caused by improper installation, prevents damage to the filter core or the water purifying device caused by excessive rotation, to a certain extent, avoids the occurrence of misoperation, further enhances the safety of the product and the user satisfaction.

[0083] The following takes the cover 72 sets the positioning structure, the filter core shell 10 sets the first limiting structure 110 and the second limiting structure 120 as an example to explain: the first limiting structure 110 and the second limiting structure 120 can be set on the filter core shell 10, or integrated on an intermediate piece, which is installed on the filter core shell 10. The first limiting structure 110 includes a first stop 111, the second limiting structure 120 includes a second stop 1210, the positioning structure 721 includes a first positioning part 7211 and a second positioning part 7212, the first stop 111 is used to stop the first positioning part 7211, and the second stop 1210 is used to stop the second positioning part 7212. The first limiting structure 110 includes a first limiting part 112, the second limiting structure 120 includes a second limiting part 1220, and the positioning structure 721 includes a third positioning part 7213; when the first limiting structure 110 stops the positioning structure 721, the third positioning part 7213 is limited by the first limiting part 112; when the second limiting structure 120 stops the positioning structure 721, the third positioning part 7213 is limited by the second limiting part 1220. Wherein, the first limiting part 112 and the second limiting part 1220 both include a limiting groove, and the third positioning part 7213 includes a positioning protrusion.

[0084] In some other embodiments, the first limiting part 112 and the second limiting part 1220 both include a limiting protrusion, and the third positioning part 7213 includes a positioning groove.

[0085] In some other embodiments, the first limiting part 112 and the second limiting part 1220 both include a limiting groove and a limiting protrusion, and the third positioning part 7213 includes a positioning protrusion and a positioning groove.

[0086] The resistance and positioning feeling generated by the cooperation of the positioning protrusion and the limiting groove form obvious hand feeling feedback, which prompts the user. For resistance feeling: when the positioning protrusion rotates to the limiting groove, the user feels a gradually increasing resistance, and then when the positioning protrusion completely enters the limiting groove, the resistance will significantly decrease, forming a stable "fitting" state. For positioning feeling: the cooperation design of the positioning protrusion and the limiting groove also provides a clear positioning feeling. When the positioning protrusion successfully enters the limiting groove, the user will feel that the relative position between the installation part and the filter core body has been locked, thereby enhancing the grasp of the installation position.

[0087] The change in resistance and the final steady state enable the user to intuitively perceive that the filter cartridge has been correctly installed or disassembled into place. The resistance and positioning feeling during the cooperation of the limiting groove and the positioning protrusion can provide clear tactile feedback for the user, specifically, during the insertion process, the cooperation of the positioning protrusion and the limiting groove will produce a clear "click" feeling. This feeling can be a slight, instantaneous change in resistance, similar to the feeling of locking, and the tactile feedback enables the user to accurately determine whether the filter cartridge has been correctly installed or disassembled into place, thereby improving the accuracy and reliability of the installation. At the same time, the limiting groove limits the positioning protrusion, so that the positioning structure 721 is positioned at the first limiting structure 110 or the second limiting structure 120 to maintain the unlocked state or the locked state. In addition, the contact of the positioning protrusion and the limiting groove can also produce a slight "click" sound. Although this sound effect can be subtle, it can provide an additional confirmation signal for the user when the filter cartridge is installed or disassembled into place. The use of sound effects in combination with tactile feedback can improve the accuracy of the installation process.

[0088] The first limiting portion 112 and the second limiting portion 1220 are located between the first stop portion 111 and the second stop portion 1210, the first limiting portion 112 is close to the first stop portion 111, and the second limiting portion 1220 is close to the second stop portion 1210. The positioning structure 721 includes a first positioning base body 72131 and a second positioning base body 72112 at an angle, the first positioning base body 72131 is connected to the middle part of the second positioning base body 72112, and the two free ends of the second positioning base body 72112 are respectively the first positioning portion 7211 and the second positioning portion 7212, and the free end of the first positioning base body 72131 is the third positioning portion 7213. The cover body 72 is provided with a lug 722 and a handle 723, the lug 722 is used for assembling with the water purification device to realize the locking of the filter cartridge structure, and the handle 723 is used for facilitating the user to operate the cover body 72. The filter cartridge shell 10 is provided with a positioning lug 130, the positioning lug 130 is used for assembling with the water purification device, facilitating the identification of the installation position of the filter cartridge structure in the water purification device, and avoiding the relative rotation between the filter cartridge shell 10 and the water purification device.

[0089] The rotating connection mode of the filter cartridge shell 10 and the cover body 72 is that one of the filter cartridge shell 10 and the cover body 72 is provided with a limiting groove 140 in the circumferential direction, and the other of the filter cartridge shell 10 and the cover body 72 is provided with a first clamping structure 724, which is located in the limiting groove 140 and can slide along the limiting groove 140.

[0090] In order to facilitate the first clamping structure 724 to enter the limiting groove 140, the limiting groove 140 is provided with a plurality of second clamping structures 15 at intervals in the circumferential direction, and the first clamping structure 724 is installed in the limiting groove 140 through the second clamping structure 15. Twisting the handle 723 drives the cover 72 to rotate with the filter core shell 10, and the cover 72 rotates along the limiting groove 140 of the filter core shell 10 through the first clamping structure 724, so as to switch the cover 72 between the unlocked state and the locked state.

[0091] As shown in FIG. 26, in the unlocked state, the first positioning part 7211 of the positioning structure 721 is in contact with the first stop part 111 of the first limiting structure 110, and the third positioning part 7213 of the positioning structure 721 is assembled with the first limiting part 112. Rotating the handle 723 synchronously rotates the positioning structure 721, the third positioning part 7213 is disengaged from the first limiting part 112, and is rotated to the second positioning part 7212 in contact with the second stop part 1210, the third positioning part 7213 is assembled with the second limiting part 1220, and the handle 723 cannot continue to rotate, and is switched to the locked state.

[0092] As shown in FIG. 27, in the locked state, the second positioning part 7212 of the positioning structure 721 is in contact with the second stop part 1210 of the second limiting structure 120, and the third positioning part 7213 of the positioning structure 721 is assembled with the second limiting part 1220. Reverse rotating the handle 723 synchronously rotates the positioning structure 721, the third positioning part 7213 is disengaged from the second limiting part 1220, and is rotated to the first positioning part 7211 in contact with the first stop part 111, the third positioning part 7213 is assembled with the first limiting part 112, and the handle 723 cannot continue to rotate, and is switched to the unlocked state. The filter core structure includes the cover 72 assembly and the filter core body, the filter core shell 10 of the cover 72 assembly forms the filter core cavity 16, and the filter core body is located in the filter core cavity 16.

[0093] A water purifying device includes the filter core structure and the installation main body 7 shown in FIG. 28 (the installation main body 7 can also be referred to as a water purifying device shell), the installation main body 7 includes a filter device installation cavity 71 (the filter device installation cavity 71 can also be referred to as a filter core installation cavity) for installing the cover 72 assembly, a first groove 711 cooperating with the positioning lug 130 on the filter core shell 10 and a second groove 712 cooperating with the lug 722 on the cover 72 are arranged on the cavity wall of the filter device installation cavity 71; the first groove 711 is arranged along the axial direction of the filter device installation cavity 71, and the second groove 712 is arranged along the circumferential direction of the filter device installation cavity 71.

[0094] The cover 72 assembly is installed in the installation main body 7.

[0095] Before the filter core structure is installed, the cover 72 is rotated relative to the filter core shell 10 to the unlocked state shown in FIG. 26, during installation, the positioning lug 130 is aligned with the first groove 711, the filter core structure is placed along the axial direction of the filter device installation cavity 71, after being placed in place, the lug 722 enters the second groove 712, the cover 72 is rotated by the handle 723, the filter core shell 10 does not rotate, the lug 722 slides in the second groove 712, until the cover 72 is rotated to the locked state shown in FIG. 27, the user has a clear locking in place touch. When disassembling, rotate the cover 72 in the opposite direction, rotate the cover 72 to the unlocked state shown in FIG. 26, the user has a clear unlocking in place touch. After unlocking, the filter core structure can be taken out of the filter device installation cavity 71, the whole process is convenient and fast.

[0096] A transversely placed filter core structure includes a filter core and a filter core shell. The filter core is used to filter raw water to obtain purified water. The filter core shell forms a filter core cavity, the filter core is located in the filter core cavity, the filter core shell is provided with a shell outlet, and a water outlet cavity is formed between the filter core and the filter core shell. The part of the filter core close to the shell outlet is sealingly connected with the inner wall of the filter core shell to seal the water outlet cavity, and an opening is formed in the top position of the sealing connection between the filter core and the inner wall of the filter core shell. The opening is in communication with the water outlet cavity and the shell outlet. The filter core shell is provided with a shell inlet, and after the water enters the filter core through the shell inlet, due to the fact that the density of air is less than that of water, the gas accumulates in the upper part of the filter core shell under the action of water and gradually discharges through the opening in the top, until the gas discharge is completed, the water outlet starts to discharge water. Therefore, the filter core structure can avoid containing gas, the whole filter core can be utilized, the utilization rate of the filter core is high, and the water outlet is timely.

[0097] In some embodiments, the transversely placed filter core structure can be a general filter core, the filter core shell only includes a shell inlet and a shell outlet, the shell inlet and the shell outlet are arranged at the end of the filter core shell, the height of the shell outlet is higher than that of the shell inlet, which is beneficial to the exhaust, and the cavity surrounded by the filter core is a raw water cavity.

[0098] During filtration, raw water enters the raw water cavity of the filter core after entering the shell inlet, the gas is gradually extruded to the top of the water outlet cavity and discharged from the opening, and the raw water is filtered to enter the water outlet cavity between the filter core and the shell, and then the purified water is discharged from the shell outlet.

[0099] In some embodiments, the transversely placed filter core structure is a reverse osmosis membrane filter core.

[0100] As shown in FIGS. 29-30, the horizontal filter structure includes a filter and a filter housing 10. The filter housing 10 forms a filter cavity, and the filter is located in the filter cavity. One end of the filter housing 10 is provided with a joint 1300, and a housing raw water inlet 121, a housing clean water outlet 122 and a housing waste water outlet 123 are formed on the joint 1300. The housing outlet is the housing waste water outlet 123, the water outlet cavity is the waste water cavity, and the escape port 30 communicates the waste water cavity 2211 and the housing waste water outlet 123. The height of the housing waste water outlet 123 is higher than the height of the housing raw water inlet 121 and the housing clean water outlet 122, so as to facilitate the discharge of gas from the housing waste water outlet 123. The filter includes a filter body 220, a center tube 222, a first end cover 230 and a second end cover 240. The filter body 220 is sleeved on the center tube 222, the first end cover 230 and the second end cover 240 are respectively located at two ends of the filter body 220 and the center tube 222, the first end cover 230 is located at one end of the filter body 220 and the center tube 222 close to the housing outlet, and the second end cover 240 is located at the other end of the filter body 220 and the center tube 222. The inner cavity of the center tube 222 forms a clean water cavity 2221, one end of the center tube 222 is closed by the second end cover 240, and the other end of the center tube 222 communicates with the housing clean water outlet 122. Specifically, the other end of the center tube 222 penetrates through the first end cover 230 and is connected with the filter housing 10, and the clean water cavity 2221 communicates with the housing clean water outlet 122. A plurality of through holes 2222 are arranged on the side wall of the center tube 222, and the through holes 2222 are used for communicating the filter body 220 and the clean water cavity 2221. The filter body 220 is sleeved on the center tube 222, a raw water passage 231 is formed between the first end cover 230 or the inner wall of the first end cover 230 and the filter housing 10, and the housing raw water inlet 121 communicates with the filter body 220 through the raw water passage 231. The filter body 220 and the inner wall of the filter housing 10 form a waste water cavity 2211, and the part of the filter close to the housing outlet is sealingly connected with the filter housing 10 to seal the waste water cavity 2211. The escape port 30 is arranged at the top of the sealing connection position of the filter and the filter housing 10, and the escape port 30 communicates the waste water cavity 2211 and the housing waste water outlet 123. The first end cover 230 has a first connecting portion 232, the inner wall of the filter housing has a second connecting portion 134, the first connecting portion 232 is sealingly connected with the second connecting portion 134, and the escape port 30 is located on the second connecting portion 134.

[0101] In some embodiments, the escape port 30 is located on the first connecting portion 232.

[0102] In some embodiments, the relief 30 is located on the first connecting portion 232 and the second connecting portion 134, and in some embodiments, the relief 30 is located between the first connecting portion 232 and the second connecting portion 134. The inner wall of the filter core housing 10 includes an end portion, the first end cover 230 is opposite to the end portion inner wall, the first connecting portion 232 extends from the first end cover 230 to the end portion inner wall, and the second connecting portion 134 extends from the end portion inner wall to the first end cover 230.

[0103] In some embodiments, the first end cover 230 has the first connecting portion 232 sealingly connected with the inner wall of the filter core housing, and the relief 30 is located on the first connecting portion 232. The filter core housing 10 includes an end portion, the first end cover 230 is opposite to the end portion inner wall, and the first connecting portion 232 extends from the first end cover 230 to the end portion inner wall.

[0104] In some embodiments, the inner wall of the filter core housing has the second connecting portion 134 sealingly connected with the first end cover 230, and the relief 30 is located on the second connecting portion 134. The filter core housing 10 includes an end portion, the first end cover 230 is opposite to the end portion inner wall, and the second connecting portion 134 extends from the end portion inner wall to the first end cover 230. During filtration, raw water enters the filter core body 220 through the housing raw water inlet 121 and the raw water channel 231, and the filtered water after passing through the filter core body 220 enters the clean water cavity 2221 through the through hole 2222 of the center pipe 222, and is discharged from the housing clean water outlet 122; the waste water after passing through the filter core body 220 enters the water outlet cavity (waste water cavity 2211), the gas in the water outlet cavity (waste water cavity 2211) is lifted to the top of the waste water cavity 2211 and discharged from the housing waste water outlet 123 through the relief 30, and when the water level in the water outlet cavity (waste water cavity 2211) reaches the relief 30, the waste water passes through the relief 30 and is discharged from the housing waste water outlet 123. By raising the water level of the waste water outlet of the waste water cavity 2211, the gas accumulated in the upper part of the filter core housing 10 is first discharged through the relief 30, and then the waste water is discharged after the gas is discharged, effectively solving the problems of low filter core utilization and delayed water outlet caused by the existence of gas in the filter core housing 10.

[0105] The embodiment also provides a water purifying device, which comprises a housing, and the housing is internally provided with the transverse filter core structure.

[0106] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same; although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can still be modified by those skilled in the art, or some technical features can be replaced by equivalent ones; and the modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions claimed by the present application.

Claims

1. A water purification system, comprising: The water purification system comprises a filter device, a water inlet pipeline and a water outlet pipeline, the filter device comprises a water inlet, a pure water outlet and a waste water outlet; the water inlet pipeline is connected with the water inlet, and a water inlet valve and a water pump are arranged on the water inlet pipeline; the water outlet pipeline is connected with the pure water outlet; characterized in that the water purification system comprises: a flushing pipeline connected with the water inlet pipeline and the water outlet pipeline; a pure water storage device arranged on the flushing pipeline; a flushing one-way valve arranged on the flushing pipeline between the pure water storage device and the water inlet pipeline, and capable of making water in the pure water storage device flow to the water inlet pipeline; a water outlet valve connected with the water outlet pipeline; a water outlet one-way valve arranged on the water outlet pipeline, and capable of making water in the pure water outlet flow to the water outlet valve; a high-voltage switch arranged on the water outlet pipeline; the water inlet valve and the water pump are controlled by the high-voltage switch; when the water outlet valve is opened, the high-voltage switch is closed, the water inlet valve and the water pump work, and water in the pure water outlet flows out through the water outlet valve; when the water outlet valve is closed and the high-voltage switch is closed, the water inlet valve and the water pump work, and water in the pure water outlet enters the pure water storage device; when the high-voltage switch is turned off, the water inlet valve and the water pump stop working, and water in the pure water storage device enters the filter device through the water inlet and is discharged from the waste water outlet.

2. The water purification system of claim 1, wherein A second flushing one-way valve is arranged on the flushing pipeline between the pure water storage device and the water outlet pipeline, and the second flushing one-way valve is capable of making water in the water outlet pipeline flow to the pure water storage device; or a first backflow electromagnetic valve is arranged on the flushing pipeline between the pure water storage device and the water outlet pipeline, and the first backflow electromagnetic valve is closed when the water outlet valve is opened and is opened when the water outlet valve is closed.

3. The water purification system of claim 2, wherein, 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 of claim 1, wherein 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 of claim 1, wherein A second backflow electromagnetic valve is arranged on the flushing pipeline between the pure water storage device and the water inlet pipeline, and the second backflow electromagnetic valve is closed when the water outlet valve is opened and is opened when the high-voltage switch is turned off.

6. The water purification system of claim 1, wherein The flushing pipeline is connected to the water inlet pipeline before the water pump, and a backflow electromagnetic valve is arranged on the flushing pipeline between the pure water storage device and the water inlet pipeline; or the flushing pipeline is connected to the water inlet pipeline after the water pump.

7. The water purification system of claim 1, wherein A pre-filter device is arranged on the water inlet pipeline, and a post-filter device is arranged on the water outlet pipeline.

8. The water purification system of claim 7, wherein, 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 of claim 7, wherein, The post-filtering device is located between the water outlet check valve and the water outlet valve; the flushing pipeline is connected to the water outlet pipeline between the filtering device and the post-filtering device, or the flushing pipeline is connected to the water outlet pipeline between the post-filtering device and the water outlet valve.

10. The water purification system of claims 1-9, wherein, The water purification system further comprises a gas supplement device, which is used to communicate with or disconnect from the cavity of the pure water storage device, and is used to supplement gas into the cavity of the pure water storage device.

11. The water purification system of claim 10, wherein, The gas supplement device is connected to the pure water storage device through a check valve.

12. A water purification device, characterized by The water purification device comprises: The water purification system according to any one of claims 1-11; a housing and a mounting body, the mounting body is located in the housing, the mounting body forms a filtering device mounting cavity, the filtering device is arranged in the filtering device mounting cavity, the water pump and the pure water storage device are mounted on the top of the mounting body; A waterway assembly is mounted on the mounting body and communicates with the filtering device waterway; the water inlet valve is mounted on the waterway assembly.

13. The water purification device of claim 12, wherein, The water pump and the pure water storage device are arranged along the mounting direction of the filtering device, and the pure water storage device is mounted close to the waterway assembly; the lower part of the pure water storage device is provided with a recess, and the water inlet valve is arranged in the recess, or at least part of the waterway assembly is arranged in the recess.

14. A filter core structure of a filtering device, comprising: a filter core; a filter core shell forming a filter core cavity, the filter core being located in the filter core cavity; The filter core shell comprises a positioning joint, the positioning joint is a columnar protrusion formed on the end face of the filter core shell, and the columnar protrusion is a non-cylinder; The columnar protrusion is provided with a shell water port, and the shell water port is in fluid communication with the filter core; A sealing element is arranged at the shell water port, and the sealing element is located at the opening of the shell water port or at least partially located in the shell water port.

15. The filter cartridge construction of claim 14 wherein, The filtering device is a filtering device in the filtering system according to any one of claims 1-11.

16. The filter-cartridge construction of claim 14 or 15 wherein, The columnar protrusion is an elliptical cylinder; or the columnar protrusion is a polygonal column; or the columnar protrusion comprises two parallel cylindrical surfaces and an arc surface connecting the two parallel cylindrical surfaces; or the cross section of the columnar protrusion is irregular.

17. The filter cartridge arrangement of claim 14 or 15, wherein, The columnar protrusion is provided with at least two shell water ports at the top thereof, and the columnar protrusion has a shape adapted to the outer contour of the at least two shell water ports.

18. The filter cartridge construction of claim 16 wherein, The arc surface is outwardly convex.

19. The filter cartridge construction of claim 16 wherein, The shell water ports are arranged in the long axis direction of the end face of the columnar protrusion; or the shell water ports are arranged in the long axis direction and the short axis direction of the end face of the columnar protrusion, and the number of shell water ports arranged in the long axis direction is greater than or equal to the number of shell water ports arranged in the short axis direction.

20. The filter cartridge arrangement of claim 14 or 15, wherein, The sealing element is a sealing ring, which is arranged on the inner wall of the shell water port, and the opening inner diameter of the shell water port is greater than the inner diameter of the sealing ring and smaller than the outer diameter of the sealing ring.

21. The filter cartridge construction of claim 20 wherein, The end of the columnar protrusion is provided with a press-fit element for press-fitting the sealing ring, and the press-fit element is provided with an opening corresponding to the part of the shell water port.

22. The filter cartridge construction of claim 16 wherein, The shell water port comprises a shell raw water inlet, a shell pure water outlet and a shell waste water outlet, and the filter core is a reverse osmosis membrane filter core.

23. The filter cartridge construction of claim 22 wherein, The filter core comprises: a center tube having a pure water cavity in communication with the shell pure water outlet; a filter core body sleeved on the center tube; an end cover at an end of the filter core body, the end cover being provided with a filter core raw water inlet, the filter core raw water inlet being in communication with the shell raw water inlet, the end cover and the filter core shell forming a filter core waste water outlet, the filter core waste water outlet being in communication with the shell waste water outlet.

24. The filter cartridge construction of claim 16 wherein, The shell water port comprises a front water inlet, a front water outlet, a rear water inlet and a rear water outlet, and the filter core is a composite filter core.

25. The filter cartridge construction of claim 24 wherein, The filter core comprises: an inner flow guide part internally forming a rear water outlet cavity in communication with the rear water outlet; an outer flow guide part comprising an outer flow guide tube and a containing part, the containing part having an inner diameter greater than that of the outer flow guide tube, the outer flow guide tube being sleeved on the outside of the inner flow guide part, the inner flow guide part and the outer flow guide tube forming a rear water inlet channel in communication with the rear water inlet; a front filter core body sleeved on the outer flow guide tube, the front filter core body and the filter core shell forming a front water inlet channel in communication with the front water inlet, the front filter core body and the outer flow guide tube forming a front water outlet cavity in communication with the front water outlet; a rear filter core body in the containing part, the outer periphery of the rear filter core body being in communication with the rear water inlet channel, and the inside of the rear filter core body being in communication with the rear water outlet cavity.

26. A cover assembly of a filter device, the filter device comprising a cover assembly and a filter core shell, characterized in that: the cover assembly comprises a cover rotatably mounted with the filter core shell; one of the filter core shell and the cover is provided with first and second limiting structures, and the other of the filter core shell and the cover is provided with a positioning structure, the rotation range of the positioning structure being limited between the first and second limiting structures.

27. The cap assembly of the filter device of claim 26, wherein, The filter device is a filter device in the filter system as claimed in any one of claims 1-11.

28. The cap assembly of a filtration device according to claim 26 or 27, wherein, The first limiting structure comprises a first stop portion, the second limiting structure comprises a second stop portion, the positioning structure comprises a first positioning portion and a second positioning portion, the first stop portion is used to stop the first positioning portion, and the second stop portion is used to stop the second positioning portion.

29. The cap assembly of the filtration device of any one of claims 26 or 27, wherein, The first limiting structure comprises a first limiting portion, the second limiting structure comprises a second limiting portion, and the positioning structure comprises a third positioning portion; when the first limiting structure stops the positioning structure, the third positioning portion is limited by the first limiting portion; when the second limiting structure stops the positioning structure, the third positioning portion is limited by the second limiting portion.

30. The cap assembly of the filter device of claim 29, wherein, The first and second limiting portions each comprise a limiting groove, and the third positioning portion comprises a positioning protrusion; and / or, the first and second limiting portions each comprise a limiting protrusion, and the third positioning portion comprises a positioning groove.

31. The cap assembly of the filter device of claim 30, wherein, The positioning structure comprises a first positioning base and a second positioning base, the first positioning base is connected to the middle part of the second positioning base, the two free ends of the second positioning base are respectively a first positioning part and a second positioning part, and the free end of the first positioning base is a third positioning part.

32. The cap assembly of a filtration device according to claim 26 or 27, wherein, The cover is provided with a lug and a handle, and the filter core shell is provided with a positioning lug.

33. The cap assembly of a filtration device according to claim 26 or 27, wherein, One of the filter core shell and the cover is provided with a limiting groove in the circumferential direction, and the other one of the filter core shell and the cover is provided with a first clamping structure, which is located in the limiting groove and can slide along the limiting groove.

34. The cap assembly of the filter device of claim 33, wherein, The limiting groove is provided with a plurality of second clamping structures in the circumferential direction, and the first clamping structure is installed in the limiting groove through the second clamping structure.

35. A filter cartridge structure for a filtration device, comprising: The filter core body is characterized in that the filter core structure comprises the cover assembly of any one of claims 26-34, the shell forms a filter core cavity, and the filter core body is located in the filter core cavity.

36. A water purification apparatus comprising the filter cartridge structure of the filter apparatus of claim 35, characterized by The mounting body comprises a filter device mounting cavity for mounting the cover assembly, a first groove matched with the positioning lug on the filter core shell, and a second groove matched with the lug on the cover are arranged on the cavity wall of the filter device mounting cavity; the first groove is arranged in the axial direction of the filter device mounting cavity, and the second groove is arranged in the circumferential direction of the filter device mounting cavity.

37. A filter core structure of a filter device, characterized in that, The filter core structure is a horizontal filter core structure, and the horizontal filter core structure comprises: a filter core; a filter core shell forming a filter core cavity, the filter core being located in the filter core cavity, the filter core shell being provided with a shell outlet, and a water outlet cavity being formed between the filter core and the filter core shell; a part of the filter core close to the shell outlet is sealingly connected with the inner wall of the filter core shell to seal the water outlet cavity, and an avoiding opening is arranged on the top of the sealingly connected part of the filter core and the inner wall of the filter core shell.

38. The filter cartridge construction of claim 37 wherein, The filter device is a filter device in the filter system as claimed in any one of claims 1-11.

39. The water purification device of claim 37 or 38, wherein, The filter core comprises a filter core body, an end cover located at the end of the filter core body close to the shell outlet, the end cover having a first connecting part sealingly connected with the inner wall of the filter core shell, and the avoiding opening being located on the first connecting part.

40. The water purification device of claim 39, wherein, The filter core shell comprises an end part, the end cover is opposite to the inner wall of the end part, and the first connecting part extends from the end cover to the inner wall of the end part.

41. The water purification device of claim 37 or 38, wherein, The filter core comprises a filter core body, an end cover located at the end of the filter core body close to the shell outlet, the inner wall of the filter core shell having a second connecting part sealingly connected with the end cover, and the avoiding opening being located on the second connecting part.

42. The water purification device of claim 41, wherein, The filter core shell comprises an end part, the end cover is opposite to the inner wall of the end part, and the second connecting part extends from the inner wall of the end part to the end cover.

43. The water purification device of claim 37 or 38, wherein, The filter core comprises a filter core body, an end cover located at an end of the filter core body close to the shell outlet, the end cover has a first connecting part, an inner wall of the filter core shell has a second connecting part, the first connecting part is in sealing connection with the second connecting part, and the avoiding opening is located on the first connecting part and / or the second connecting part or between the first connecting part and the second connecting part.

44. The water purification device of claim 43, wherein, The inner wall of the filter core shell comprises an end part, the end cover is opposite to the end part, the first connecting part extends from the end cover to the end part, and the second connecting part extends from the end part to the end cover.

45. The water purification device of claim 37 or 38, wherein, The filter core shell comprises an end part, the shell outlet is located at the end part, the end part is provided with a shell inlet, and a height of the shell outlet is higher than a height of the shell inlet.

46. The water purification device of claim 37 or 38, wherein The shell outlet is a shell wastewater outlet, the water outlet cavity is a wastewater cavity, and the avoiding opening is in communication with the wastewater cavity and the shell wastewater outlet.

47. The water purification device of claim 45, wherein, The filter core shell is provided with a shell raw water inlet and a shell clean water outlet, and a height of the shell wastewater outlet is higher than heights of the shell raw water inlet and the shell clean water outlet.

48. The water purification device of claim 46, wherein, The horizontal filter core structure further comprises a central pipe arranged in the filter core, one end of the central pipe is closed, the other end of the central pipe is in communication with the shell clean water outlet, and a wall of the central pipe is provided with a through hole; raw water enters the filter core from the shell raw water inlet, filtered water enters the central pipe from the through hole, and the filtered water is discharged from the shell clean water outlet; Wastewater enters the water outlet cavity, when a water level in the water outlet cavity reaches the avoiding opening, the wastewater passes through the avoiding opening and is discharged from the shell wastewater outlet.

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