A water purification system containing a horizontal composite filter element

Abstract

The present invention discloses a water purification system containing a horizontal composite filter element, comprising a housing, a front plate, a rear plate, a frame, a PP cotton activated carbon composite filter element, an RO membrane activated carbon composite filter element and an integrated waterway plate; the integrated waterway plate is installed on the frame, close to the rear end of the PP cotton activated carbon composite filter element and the rear end of the RO membrane activated carbon composite filter element, the initial filter end and the filter outlet end; the integrated waterway plate is provided with a first input pipeline, a first output pipeline, a second input pipeline and a third output pipeline; the first input pipeline inputs tap water; the first output pipeline outputs filtered water; the second input pipeline is connected to the initial filter end of the RO membrane activated carbon composite filter element to input the filtered water; the second output pipeline outputs pure water to the outside; the third output pipeline outputs waste water to the outside. The internal and external input and output waterways of the water purification equipment are integrated into one, the waterway connection relationship is simplified, the structure is compact and the space occupancy is small.

Description

Technical Field

[0001] The invention relates to the technical field of water purification equipment, and in particular to a water purification system containing a horizontal composite filter element. Background Art

[0002] The water purifiers in the prior art have complicated water connections inside and outside the machine, especially the layout of the connecting water and circuit pipes outside the machine is messy, the installation space occupied is large, and the appearance is not neat and beautiful.

[0003] The RO membrane activated carbon composite filter element contains complex pipelines. Inaccurate pipeline docking during assembly can easily cause internal leakage, and maintenance and assembly are prone to errors, resulting in low work efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a water purification system containing a horizontal composite filter element, wherein the water channels inside and outside the machine are integrated and easy to install.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A water purification system containing a horizontal composite filter element, comprising a housing, a front plate, a rear plate, a frame, a PP cotton activated carbon composite filter element, an RO membrane activated carbon composite filter element and an integrated waterway plate;

[0007] The horizontally placed housing is provided with a cavity penetrating front and rear, and the front plate and the rear plate are respectively installed at two through holes at the front and rear ends of the cavity;

[0008] The frame is mounted in the housing and located between the front plate and the rear plate;

[0009] The frame is provided with a first installation cavity and a second installation cavity, the second installation cavity is located at the upper part of the frame, and the first installation cavity is located below the second installation cavity;

[0010] The PP cotton activated carbon composite filter element and the RO membrane activated carbon composite filter element are installed in the first installation cavity and the second installation cavity respectively; the rear end of the PP cotton activated carbon composite filter element and the rear end of the RO membrane activated carbon composite filter element are both provided with a starting filter end and a filter outlet end;

[0011] The integrated waterway plate is installed on the frame; the integrated waterway plate is arranged close to the rear end of the PP cotton activated carbon composite filter element and the rear end of the RO membrane activated carbon composite filter element;

[0012] The integrated waterway plate is provided with a first input pipeline, a first output pipeline, a second input pipeline, a second output pipeline and a third output pipeline;

[0013] The first input pipeline is connected to the starting filter end of the PP cotton activated carbon composite filter element and inputs tap water; the first output pipeline is connected to the filtering end of the PP cotton activated carbon composite filter element and outputs filtered water to the outside; the second input pipeline is connected to the starting filter end of the RO membrane activated carbon composite filter element and inputs the filtered water; the second output pipeline is connected to the filtering end of the RO membrane activated carbon composite filter element and outputs pure water to the outside; the third output pipeline is connected to the starting filter end of the RO membrane in the RO membrane activated carbon composite filter element and outputs waste water for cleaning impurities to the outside.

[0014] Specifically, the integrated waterway plate is provided with a tap water inlet, a purified water outlet, a waste water outlet and a domestic water outlet;

[0015] The tap water input port is arranged at the input end of the first input pipeline; the purified water output port is arranged at the output end of the second output pipeline; the waste water output port is arranged at the output end of the third output pipeline; the domestic water output port is arranged at the output end of the first output pipeline;

[0016] The tap water inlet, the pure water outlet, the waste water outlet and the domestic water outlet pass backward through the integrated waterway plate and the back plate; the edges of the tap water inlet, the pure water outlet, the waste water outlet and the domestic water outlet are all exposed backward on the back plate surface of the back plate.

[0017] Some of the embodiments further include a water inlet valve, a waste water valve and a pressure sensor;

[0018] The water inlet valve is installed on the second input pipeline, and the water inlet valve is used to control the on-off of the filtered water in the second input pipeline;

[0019] The wastewater valve is installed on the third output pipeline, and the wastewater valve is used to control the on-off of the wastewater in the third output pipeline;

[0020] The pressure sensor is installed on the second output pipeline, and the pressure sensor is used to detect and feed back the pressure of the pure water output by the second output pipeline.

[0021] In some other embodiments, a booster pump and a booster pump fixing seat are also included;

[0022] A third installation cavity is provided at the lower part of the frame; the third installation cavity is located below the first installation cavity, and the third installation cavity is located behind the second installation cavity;

[0023] The boost pump fixing seat is installed below the third installation cavity, and the boost pump is fixed to the boost pump fixing seat;

[0024] The output end of the second input pipeline is provided with a filtered water re-filtering output port; the input end of the booster pump is connected to the filtered water re-filtering output port; the output end of the booster pump is connected to the initial filtering end of the RO membrane activated carbon composite filter element;

[0025] The top of the frame is also provided with a first fixing slot and a second fixing slot respectively; the first fixing slot and the second fixing slot are used to install the control board and the power supply respectively;

[0026] The rear side of the frame is also provided with a forward recessed mounting groove, and the integrated waterway plate is arranged in the middle of the mounting groove;

[0027] The connecting pipeline between the PP cotton activated carbon composite filter element and the integrated waterway plate passes through the top of the third installation cavity and enters the middle of the installation groove;

[0028] The rear side of the first installation cavity is communicated with the upper part of the bottom of the installation groove, and the rear side of the third installation cavity is communicated with the lower part of the bottom of the installation groove; the connecting pipeline between the RO membrane activated carbon composite filter element and the integrated water circuit plate is stored in the upper part of the installation groove; the connecting pipeline between the integrated water circuit plate and the booster pump is stored in the lower part of the installation groove.

[0029] Preferably, the RO membrane activated carbon composite filter element comprises a first end cap assembly and a first housing;

[0030] A guide groove and a fixing buckle are provided inside the first end cover assembly;

[0031] The guide groove is rotated and extended from front to rear along the inner side surface of the side wall of the first end cover assembly to the rear side surface inside the side wall, and a plurality of the fixing buckles arranged at intervals are arranged near the inner edge of the guide groove, and a gap is provided between the fixing buckles and the inner edge of the guide groove;

[0032] A spiral tube extending backward is provided in the middle of the rear end of the first housing, and a guide block extending in all directions is provided on the outer wall of the spiral tube, and the guide block, the fixing buckle and the guide groove form a matching rotating lock structure;

[0033] The rear end of the first housing rotates from front to rear and extends into the first end cover assembly, and the rear end surface of the pipe opening of the spiral tube extends backward and abuts against the front side surface of the inner wall of the first end cover assembly;

[0034] The PP cotton activated carbon composite filter element comprises a second end cover assembly and a second shell, wherein the second end cover assembly and the second shell are respectively provided with a rotating lock structure which is the same as the guide block, the fixing buckle and the guide groove structure.

[0035] In yet another embodiment, it further includes a first TDS detection head and a second TDS detection head;

[0036] The rear end of the first end cap assembly is adjacently provided with a filtered water re-filter input port, a pure water filter outlet, a pure water detection port and a waste water filter outlet;

[0037] The first output pipeline is provided with a filtered water detection port; the input end of the second output pipeline is provided with a pure water input port; the input end of the third output pipeline is provided with a waste water input port;

[0038] The upwardly opening filtered water detection port, the pure water input port and the waste water input port are all arranged close to the front plate surface of the rear plate of the integrated waterway plate; the pure water input port is arranged adjacent to the left side of the waste water input port; the filtered water detection port is located on the right side of the waste water input port;

[0039] The filtered water re-filter input port is connected to the output end of the booster pump;

[0040] The pure water filter outlet is close to and connected to the pure water input port; the waste water filter outlet is close to and connected to the waste water input port;

[0041] The first TDS detection head is installed at the pure water detection port, and the pure water detection port is arranged above the pure water filter outlet; the second TDS detection head is installed at the filtered water detection port;

[0042] The RO membrane activated carbon composite filter element further comprises a valve core assembly; the valve core assembly comprises an RO membrane filter element and a post-activated carbon filter element; the RO membrane filter element is sleeved on the periphery of the post-activated carbon filter element;

[0043] The filtered water re-filtration input port and the wastewater filtration outlet are respectively connected to the initial filtration end of the RO membrane filter element; the filtration end of the RO membrane filter element is connected to the initial filtration end of the post-activated carbon filter element; the pure water input port is connected to the filtration end of the post-activated carbon filter element.

[0044] Preferably, the first end cover assembly is provided with a first pure water output pipe and a cross-shaped check valve;

[0045] The pure water filter outlet is arranged at the output end of the first pure water output pipe, and the input end of the first pure water output pipe extends inwardly to the middle of the first end cover assembly;

[0046] The valve core assembly is also provided with a valve core upper cover assembly, and a second pure water output pipe protruding backward is provided in the middle of the valve core upper cover assembly, and the outer side of the edge of the rear end pipe opening of the second pure water output pipe abuts against the inner side of the edge of the input end pipe opening of the first pure water output pipe; the front end of the second pure water output pipe is connected to the filter outlet end of the RO membrane filter element;

[0047] The cross-shaped check valve comprises a front straight rod and a rear straight rod, the middle part of the cross-shaped check valve extends outward in all directions; the cross-shaped check valve has a cross-shaped cross section along the axial direction of the first pure water output pipe; the rear straight rod of the cross-shaped check valve is inserted into the input end of the first pure water output pipe; a gap is left between the outer side surface of the rear straight rod and the inner wall of the first pure water output pipe;

[0048] A spring mounting seat is provided inside the second pure water output pipe, a middle through hole is provided in the middle of the spring mounting seat, and a spring is sleeved on the outer wall of the middle through hole; the front straight rod of the cross-shaped check valve is inserted into the middle through hole; the front end of the spring abuts against the rear side surface of the spring mounting seat located in front of the middle through hole, and the rear end of the spring abuts against the front side surface of the middle protruding part of the cross-shaped check valve;

[0049] When the water pressure behind the cross-shaped check valve is greater than the backward elastic force of the spring against the cross-shaped check valve, the cross-shaped check valve slides forward, and the front side surface of the protruding part in the middle of the cross-shaped check valve abuts against the rear end pipe mouth of the middle through hole, closing the second pure water output pipe.

[0050] Preferably, the valve core upper cover assembly is also provided with a pure water reverse flow guide pipe, a reverse osmosis check valve and a first check valve;

[0051] The pure water reverse flow guide pipe is sleeved on the periphery of the second pure water output pipe;

[0052] The reverse osmosis check valve is installed in the pure water reverse flow guide pipe and is located between the inner wall of the pure water reverse flow guide pipe and the outer wall of the second pure water output pipe;

[0053] The rear end of the pure water reverse flow guide pipe is respectively connected to the gap between the rear end straight rod of the cross-shaped check valve and the inner wall of the first pure water output pipe; the front end of the pure water reverse flow guide pipe is connected to the filter outlet end of the inner side of the RO membrane filter element;

[0054] The U-shaped edge of the valve core of the reverse osmosis check valve is embedded in a valve core installation groove recessed backwards in the reverse osmosis check valve, and a front side surface of the valve core is provided with a plurality of slit grooves that can be opened and closed in a direction perpendicular to the axis of the valve core;

[0055] The first check valve is arranged on the outer wall of the pure water reverse flow guide pipe, and is located between the outer wall of the pure water reverse flow guide pipe and the inner wall of the first shell; the rear end of the first check valve is connected to the filtered water re-filtration input port, and the front end of the first check valve is connected to the RO membrane initial filtration end of the outer side surface of the RO membrane filter element;

[0056] When the water pressure behind the first check valve is greater than the water pressure in front of the first check valve, the first check valve is in an on state; conversely, when the water pressure behind the first check valve is less than the water pressure in front of the first check valve, the first check valve is in a closed state;

[0057] When the water pressure behind the reverse osmosis check valve is greater than the water pressure in front, the middle of the valve core is pressed to be sunken forward, the slit groove opens to the surroundings, and a gap is generated between the surrounding edges of the valve core and the valve core installation groove. The pure water that flows into the pure water reverse guide pipe in the reverse direction penetrates from the gap to the front of the reverse osmosis check valve and reaches the RO membrane filter end located on the inner side of the RO membrane filter element;

[0058] On the contrary, when the water pressure behind the reverse osmosis check valve is less than the water pressure in front, the slit groove shrinks toward the center and closes, the edges around the valve core abut against the inner side of the groove to close the gap, and the reverse osmosis check valve is closed.

[0059] Preferably, the valve core assembly further includes a valve core fixing cover, an air bag, an air bag installation box and a second check valve;

[0060] The airbag is installed in the airbag installation box, and the airbag installation box is located in front of the RO membrane filter element and the post-activated carbon filter element;

[0061] The valve core fixing cover is installed between the RO membrane filter element and the air bag installation box; a valve core through hole is provided in the middle of the valve core fixing cover; the edges of the valve core fixing cover protrude forward to surround and abut against the outer wall of the air bag installation box, and the edges of the valve core fixing cover protrude backward to surround and abut against the outer wall of the RO membrane filter element;

[0062] The second check valve is installed in the valve core through hole and is located between the front end of the post-activated carbon filter element and the rear end surface of the airbag; the inner side surface of the valve core through hole abuts against the outer side surface of the second check valve;

[0063] The front end of the post-activated carbon filter element abuts against the rear end surface of the second check valve; the rear end of the second check valve is connected to the filter outlet end of the post-activated carbon filter element, and the front end of the second check valve is connected to the gap between the outer wall of the airbag and the inner wall of the airbag installation box; a gap hole is provided around the valve core of the second check valve and the inner side surface of the second check valve;

[0064] When the water pressure behind the second check valve is greater than the water pressure in front, the second check valve is in a conducting state; conversely, when the water pressure behind the second check valve is less than the water pressure in front, the pure water between the outer wall of the airbag and the inner wall of the airbag mounting box flows in reverse through the gap hole into the filter outlet end of the post-activated carbon filter element.

[0065] The valve cores of the reverse osmosis check valve, the first check valve and the second check valve are all elastic rubber bodies.

[0066] Preferably, it also includes a filter element fixing plate;

[0067] The filter element fixing plate is respectively provided with a hollow first fixing ring and a second fixing ring;

[0068] The front end edge of the first installation cavity and the front end edge of the second installation cavity are respectively fixed to the forward protruding edges of the first fixing ring and the second fixing ring.

[0069] The beneficial effects of the present invention are as follows: the water purification system containing a horizontal composite filter element of the present invention comprises an integrated waterway plate, a PP cotton activated carbon composite filter element and an RO membrane activated carbon composite filter element, all of which are installed in the same casing; the integrated waterway plate is arranged near the rear end of the PP cotton activated carbon composite filter element and the rear end of the RO membrane activated carbon composite filter element, both of which are provided with input and output ports; the integrated waterway plate can be used to input tap water into the machine, and filtered water and pure water can be output to the outside; the filtered water filtered by the PP cotton activated carbon composite filter element is used as domestic water, which is both hygienic and energy-saving; the integrated waterway plate integrates the connecting pipeline between the PP cotton activated carbon composite filter element and the RO membrane activated carbon composite filter element; the water purification system containing a horizontal composite filter element simplifies the internal waterway connection relationship, and has the advantages of compact structure, convenient assembly and small space occupancy.

[0070] The invention solves the technical problems of complex pipelines, easy errors in maintenance and assembly, and low working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 It is a schematic diagram of the component structure of a water purification system containing a horizontal composite filter element according to an embodiment of the present invention;

[0072] Figure 2 for Figure 1 A schematic diagram of the assembly structure of the water purification system containing a horizontal composite filter element without a housing;

[0073] Figure 3 For Figure 1 The structural diagram of the rack in FIG.

[0074] Figure 4 for Figure 3Rear view of

[0075] Figure 5 for Figure 1 A schematic diagram of the structure of the integrated waterway plate;

[0076] Figure 6 for Figure 5 Rear view of

[0077] Figure 7 for Figure 1 Schematic diagram of the assembly structure of the RO membrane activated carbon composite filter element;

[0078] Figure 8 for Figure 7 A front view of the first end cap assembly;

[0079] Fig. 9 for Figure 7 A cross-sectional view of the assembly structure of the RO membrane activated carbon composite filter element;

[0080] Fig.10 It is a water channel connection assembly relationship diagram of the integrated water channel plate and the RO membrane activated carbon composite filter element 6;

[0081] Fig.11 for Figure 1 A schematic diagram of the structure of the rear plate in FIG.

[0082] Fig.12 for Figure 7 A front view of the valve core upper cover assembly in FIG.

[0083] Fig.13 for Figure 7 A cross-sectional view of a valve core assembly in FIG.

[0084] Fig.14 A working principle diagram of an embodiment of the present invention;

[0085] Wherein: housing 1; front plate 2; rear plate 3; frame 4; PP cotton activated carbon composite filter element 5; RO membrane activated carbon composite filter element 6; integrated waterway plate 7; booster pump 8; booster pump fixing seat 9; filter element fixing plate 10; water inlet valve 11; waste water valve 12; pressure sensor 13; first installation cavity 41; second installation cavity 42; third installation cavity 43; first fixing groove 44; second fixing groove 45; installation groove 46; first end cover assembly 61; first housing 62; valve core assembly 63; 70 filtered water detection port; tap water input port 71; pure water output port 72; waste water output port 73; domestic water output port 74; pure water input port 76; waste water input port 77; the first end cover assembly 61; first housing 62; valve core assembly 63; filtered water detection port 70 ... A fixing ring 101; a second fixing ring 102; a filtered water re-filter input port 611; a pure water filter outlet 6121; a pure water detection port 6122; a waste water filter outlet 613; a cross-shaped check valve 614; a guide groove 615; a fixing buckle 616; a first TDS detection head 617; a guide block 621; a valve core upper cover assembly 631; a valve core fixing cover 632; an RO membrane filter element 633; ​​a post-activated carbon filter element 634; an air bag 635; an air bag installation box 636; a second check valve 637; a second pure water output pipe 6311; a spring mounting seat 6312; a pure water reverse flow guide pipe 6313; a reverse osmosis check valve 6314; and a first check valve 6315. DETAILED DESCRIPTION

[0086] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0087] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, 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 operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0088] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0089] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] The technical solution of the present invention is further explained below in conjunction with Figures 1-14 and specific implementation methods.

[0091] A water purification system containing a horizontal composite filter element, comprising a housing 1, a front plate 2, a rear plate 3, a frame 4, a PP cotton activated carbon composite filter element 5, an RO membrane activated carbon composite filter element 6 and an integrated waterway plate 7;

[0092] The horizontally placed housing 1 is provided with a cavity penetrating front and rear, and the front plate 2 and the rear plate 3 are respectively installed at two through holes at the front and rear ends of the cavity;

[0093] The frame 4 is mounted inside the housing 1 and located between the front plate 2 and the rear plate 3;

[0094] The frame 4 is provided with a first installation cavity 41 and a second installation cavity 42, wherein the second installation cavity 42 is located at the upper part of the frame 4, and the first installation cavity 41 is located below the second installation cavity 42;

[0095] The PP cotton activated carbon composite filter element 5 and the RO membrane activated carbon composite filter element 6 are installed in the first installation cavity 41 and the second installation cavity 42 respectively; the rear end of the PP cotton activated carbon composite filter element 5 and the rear end of the RO membrane activated carbon composite filter element 6 are both provided with a starting filter end and a filter outlet end;

[0096] The integrated waterway plate 7 is installed on the frame 4; the integrated waterway plate 7 is arranged close to the rear end of the PP cotton activated carbon composite filter element 5 and the rear end of the RO membrane activated carbon composite filter element 6;

[0097] The integrated waterway plate 7 is provided with a first input pipeline, a first output pipeline, a second input pipeline, a second output pipeline and a third output pipeline;

[0098] The first input pipeline is connected to the starting filter end of the PP cotton activated carbon composite filter element 5 and inputs tap water; the first output pipeline is connected to the filtering end of the PP cotton activated carbon composite filter element 5 and outputs filtered water to the outside; the second input pipeline is connected to the starting filter end of the RO membrane activated carbon composite filter element 6 and inputs the filtered water; the second output pipeline is connected to the filtering end of the RO membrane activated carbon composite filter element 6 and outputs pure water to the outside; the third output pipeline is connected to the starting filter end of the RO membrane in the RO membrane activated carbon composite filter element 6 and outputs waste water cleaned of impurities to the outside.

[0099] like Figure 1 , 2 As shown in Figure 8, the water purification system containing a horizontal composite filter element of the present invention comprises an integrated waterway plate 7, a PP cotton activated carbon composite filter element 5 and a RO membrane activated carbon composite filter element 6, which are all installed in the same casing, and the integrated waterway plate 7 is arranged near the rear ends of the PP cotton activated carbon composite filter element 5 and the rear ends of the RO membrane activated carbon composite filter element 6. Through the integrated waterway plate 7, tap water can be input into the machine, and filtered water and pure water can be output outside. The filtered water filtered by the PP cotton activated carbon composite filter element 5 is used as domestic water, which is both hygienic and energy-saving; the integrated waterway plate 7 integrates the connecting pipelines between the PP cotton activated carbon composite filter element 5 and the RO membrane activated carbon composite filter element 6; the water purification system containing a horizontal composite filter element simplifies the internal waterway connection relationship, and has the advantages of compact structure, convenient assembly and small space occupancy.

[0100] Specifically, the integrated waterway plate 7 is provided with a tap water input port 71, a pure water output port 72, a waste water output port 73 and a domestic water output port 74;

[0101] The tap water input port 71 is provided at the input end of the first input pipeline; the purified water output port 72 is provided at the output end of the second output pipeline; the waste water output port 73 is provided at the output end of the third output pipeline; the domestic water output port 74 is provided at the output end of the first output pipeline;

[0102] The tap water inlet 71, the pure water outlet 72, the waste water outlet 73 and the domestic water outlet 74 pass backward through the integrated water circuit board 7 and the rear plate 3; the edges of the tap water inlet 71, the pure water outlet 72, the waste water outlet 73 and the domestic water outlet 74 are all exposed backward on the rear plate surface of the rear plate 3.

[0103] like Figure 1 , 2As shown in FIG. 8 , the water connection ports for inward input or outward output, including the tap water input port 71, the pure water output port 72, the waste water output port 73 and the domestic water output port 74, are collected and protruded outwardly on the rear panel surface of the rear panel 3, which can facilitate the connection of external water pipes. The pipelines connected outside the machine are arranged neatly, and the first input pipeline, the first output pipeline, the second input pipeline, the second output pipeline and the third output pipeline inside the machine connected to the external water circuit are arranged in an orderly manner, which can avoid connection errors during installation and maintenance. The water purification system containing the horizontal composite filter element is not only compact in structure, but also convenient for installation of internal and external pipelines, and has the characteristics of neat and beautiful appearance.

[0104] Some of the embodiments further include a water inlet valve 11, a waste water valve 12 and a pressure sensor 13;

[0105] The water inlet valve 11 is installed on the second input pipeline, and the water inlet valve 11 is used to control the on-off of the filtered water in the second input pipeline;

[0106] The wastewater valve 12 is installed on the third output pipeline, and the wastewater valve 12 is used to control the on-off of the wastewater in the third output pipeline;

[0107] The pressure sensor 13 is installed on the second output pipeline, and the pressure sensor 13 is used to detect and feed back the pressure of the pure water output from the second output pipeline.

[0108] like Figure 5 and 6 As shown, the water inlet valve 11, the waste water valve 12 and the pressure sensor 13 are respectively installed on the second input pipeline, the third output pipeline and the second output pipeline provided on the integrated water circuit board 7, which can reduce the connected pipelines and make the internal structure of the water purification system containing the horizontal composite filter element more compact. The overall integration of the integrated water circuit board 7 is high, which can improve the assembly work efficiency.

[0109] Some other embodiments further include a booster pump 8 and a booster pump fixing seat 9;

[0110] A third installation cavity 43 is provided at the lower part of the frame 4; the third installation cavity 43 is located below the first installation cavity 41, and the third installation cavity 43 is located behind the second installation cavity 42;

[0111] The boost pump fixing seat 9 is installed below the third installation cavity 43, and the boost pump 8 is fixed to the boost pump fixing seat 9;

[0112] The output end of the second input pipeline is provided with a filtered water re-filtering output port 79; the input end of the booster pump 8 is connected to the filtered water re-filtering output port 79; the output end of the booster pump 8 is connected to the initial filtering end of the RO membrane activated carbon composite filter element 6;

[0113] The top of the frame 4 is also provided with a first fixing slot 44 and a second fixing slot 45 respectively; the first fixing slot 44 and the second fixing slot 45 are used to install the control board and the power supply respectively;

[0114] The rear side of the frame 4 is also provided with a forward recessed mounting groove 46, and the integrated waterway plate 7 is arranged in the middle of the mounting groove 46;

[0115] The connecting pipe between the PP cotton activated carbon composite filter element 5 and the integrated waterway plate 7 passes through the top of the third installation cavity 43 and enters the middle of the installation groove 46;

[0116] The rear side of the first installation cavity 41 is communicated with the upper part of the bottom of the installation groove 46, and the rear side of the third installation cavity 43 is communicated with the lower part of the bottom of the installation groove 46; the connecting pipeline between the RO membrane activated carbon composite filter element 6 and the integrated water circuit plate 7 is accommodated in the upper part of the installation groove 46; the connecting pipeline between the integrated water circuit plate 7 and the booster pump 8 is accommodated in the lower part of the installation groove 46.

[0117] like Figure 1-4 As shown, the connecting pipelines between adjacent components are stored in the space between the adjacent components, which can shorten the length of the connecting pipelines and improve the compactness of the internal structure of the water purification system containing the horizontal composite filter element. The filtered water in the second input pipeline is pressurized by the booster pump 8 and then input into the RO membrane activated carbon composite filter element 6, which can improve the efficiency of RO membrane permeation filtration.

[0118] Fixing the booster pump 8 to the booster pump fixing seat 9 can make the booster pump 8 have better installation stability, and installing the control board and the power supply in the first fixing groove 44 and the second fixing groove 45 on the top of the frame 4 can prevent the control board and the power supply from being splashed with water during replacement, thereby having better safety performance.

[0119] Specifically, the RO membrane activated carbon composite filter element 6 includes a first end cap assembly 61 and a first housing 62;

[0120] The first end cover assembly 61 is provided with a guide groove 615 and a fixing buckle 616 inside;

[0121] The guide groove 615 extends from the front to the rear along the inner side of the side wall of the first end cover assembly 61 to the rear side of the side wall, and a plurality of fixed buckles 616 arranged at intervals are arranged near the inner edge of the guide groove 615, and a gap is provided between the fixed buckles 616 and the inner edge of the guide groove 615;

[0122] A spiral tube extending backward is provided in the middle of the rear end of the first housing 62, and a guide block 621 extending in all directions is provided on the outer wall of the spiral tube. The guide block 621, the fixing buckle 616 and the guide groove 615 are adapted to form a rotating lock structure;

[0123] The rear end of the first housing 62 rotates from front to rear and extends into the first end cover assembly 61, and the rear end surface of the pipe opening of the spiral tube extends backward and abuts against the front side surface of the inner wall of the first end cover assembly 61;

[0124] The PP cotton activated carbon composite filter element 5 includes a second end cover assembly and a second shell, and the second end cover assembly and the second shell are respectively provided with a rotating lock structure with the same structure as the guide block 621, the fixing buckle 616 and the guide groove 615.

[0125] like Figure 7 , 8 As shown in Figure 9, the assembly of the first end cover assembly 61 and the first shell 62 can be made tighter by the adaptive rotating lock structure, which can avoid the input and output pipe openings provided in the first end cover assembly 61 and the input and output pipe openings located at the rear end of the first shell 62 from being misaligned during installation, thereby avoiding water leakage inside the RO membrane activated carbon composite filter element 6; similarly, the PP cotton activated carbon composite filter element 5 is also provided with an adaptive rotating lock structure, which can also avoid assembly misalignment and water leakage, and can improve the assembly efficiency and assembly quality of the water purification system containing the horizontal composite filter element.

[0126] In other embodiments, a first TDS detection head 617 and a second TDS detection head are also included;

[0127] The rear end of the first end cover assembly 61 is adjacently provided with a filtered water re-filter input port 611, a pure water filter outlet 6121, a pure water detection port 6122 and a waste water filter outlet 613;

[0128] The first output pipeline is provided with a filtered water detection port 70; the input end of the second output pipeline is provided with a pure water input port 76; the input end of the third output pipeline is provided with a waste water input port 77;

[0129] The upwardly opening filtered water detection port 70, the pure water input port 76 and the waste water input port 77 are all arranged close to the front plate surface of the rear plate of the integrated waterway plate 7; the pure water input port 76 is arranged adjacent to the left side of the waste water input port 77; the filtered water detection port 70 is located on the right side of the waste water input port 77;

[0130] The filtered water re-filter input port 611 is connected to the output end of the booster pump 8;

[0131] The pure water filter outlet 6121 is close to and connected to the pure water input port 76; the waste water filter outlet 613 is close to and connected to the waste water input port 77;

[0132] The first TDS detection head 617 is installed in the pure water detection port 6122, and the pure water detection port 6122 is arranged above the pure water filter port 6121; the second TDS detection head is installed in the filtered water detection port 70;

[0133] The RO membrane activated carbon composite filter element 6 also includes a valve core assembly 63; the valve core assembly 63 includes an RO membrane filter element 633 and a post-activated carbon filter element 634; the RO membrane filter element 633 is sleeved on the periphery of the post-activated carbon filter element 634;

[0134] The filtered water re-filtration input port 611 and the wastewater filter outlet 613 are respectively connected to the initial filtration end of the RO membrane filter element 633; ​​the filtration end of the RO membrane filter element 633 is connected to the initial filtration end of the post-activated carbon filter element 634; the pure water input port 76 is connected to the filtration end of the post-activated carbon filter element 634.

[0135] like Fig.10 As shown, the pure water filter outlet 6121 is close to and connected to the pure water input port 76; the waste water filter outlet 613 is close to and connected to the waste water input port 77, which saves connecting pipes, has a compact structure and higher internal space utilization.

[0136] The first TDS detection head 617 can timely monitor and provide feedback on the water quality of the output pure water, and the second TDS detection head (not shown in the figure) can timely monitor and provide feedback on the water quality of the output filtered water. When the water quality of the output filtered water or pure water exceeds the standard, a reminder message for replacing the corresponding filter element can be issued in time.

[0137] Preferably, the first end cover assembly 61 is provided with a first pure water output pipe 612 and a cross-shaped check valve 614;

[0138] The pure water filter outlet 6121 is provided at the output end of the first pure water output pipe 612, and the input end of the first pure water output pipe 612 extends inwardly to the middle of the first end cover assembly 61;

[0139] The valve core assembly 63 is also provided with a valve core upper cover assembly 631, and a second pure water output pipe 6311 protruding backward is provided in the middle of the valve core upper cover assembly 631, and the outer edge of the rear end pipe opening of the second pure water output pipe 6311 abuts against the inner edge of the input end pipe opening of the first pure water output pipe 612; the front end of the second pure water output pipe 6311 is connected to the filter outlet end of the RO membrane filter element;

[0140] The cross-shaped check valve 614 includes a front straight rod and a rear straight rod, and the middle part of the cross-shaped check valve 614 extends outward in all directions; the cross-shaped check valve 614 has a cross-shaped cross section along the axial direction of the first pure water output pipe; the rear straight rod of the cross-shaped check valve 614 is inserted into the input end of the first pure water output pipe 612; a gap is left between the outer side surface of the rear straight rod and the inner wall of the first pure water output pipe 612;

[0141] A spring mounting seat 6312 is provided inside the second pure water output pipe 6311, a middle through hole is provided in the middle of the spring mounting seat 6312, and a spring is sleeved on the outer wall of the middle through hole; the front end straight rod of the cross-shaped check valve 614 is inserted into the middle through hole; the front end of the spring abuts against the rear side surface of the spring mounting seat 6312 located in front of the middle through hole, and the rear end of the spring abuts against the front side surface of the middle protruding part of the cross-shaped check valve 614;

[0142] When the water pressure behind the cross-shaped check valve 614 is greater than the backward elastic force of the spring against the cross-shaped check valve 614, the cross-shaped check valve 614 slides forward, and the front side surface of the protruding part in the middle of the cross-shaped check valve 614 abuts against the rear end pipe mouth of the middle through hole, closing the second pure water output pipe 6311.

[0143] like Figure 7 , 9As shown in Figure 13, when the wastewater valve 12 is opened, the water pressure at the initial filter end of the RO membrane filter element 633 connected to the wastewater filter outlet 613 decreases, and the water pressure at the filter outlet of the RO membrane filter element 633 is greater than the water pressure at the initial filter end of the RO membrane filter element 633, driving the pure water in the first pure water output pipe to flow inwardly into the first pure water output pipe 612. When the water pressure of the pure water flowing inwardly is greater than the backward elastic force of the spring, the pure water flowing inwardly pushes the cross-shaped check valve 614 to slide forward, and the front side surface of the protruding part of the middle part of the cross-shaped check valve 614 abuts against the middle through hole. The rear end pipe mouth closes the channel from the second pure water output pipe 6311 to the filtering end of the post-activated carbon of the RO membrane activated carbon composite filter element, and the pure water flowing in reverse flows into the initial filtering end of the post-activated carbon of the RO membrane activated carbon composite filter element and the filtering end of the RO membrane. As the pressure of the pure water flowing in reverse increases, the pure water flowing in reverse permeates through the RO membrane in reverse and reaches the initial filtering end of the RO membrane, forming a water flow for reversely flushing the initial filtering end of the RO membrane, cleaning the impurities at the initial filtering end of the RO membrane, and the wastewater containing impurities is discharged from the wastewater filter outlet 613 to the third output pipeline and discharged from the wastewater valve 12.

[0144] Furthermore, when repairing or replacing the filter element, the RO membrane activated carbon composite filter element 6 is removed, the cross-shaped check valve 614 is in a closed state, and the water in the second pure water output pipe 6311 will not be sprayed out. Repair and replacement are more convenient and hygienic, and there is no need to clean leaks, which can improve work efficiency and provide a better customer experience.

[0145] The water flow path of the RO membrane initial filtration end is reversely flushed, such as Fig. 9 As shown by the dashed arrow in .

[0146] The water flow path for filtering and output of pure water, such as Fig.13 As shown by the dashed arrow in .

[0147] Preferably, the valve core upper cover assembly 631 is further provided with a pure water reverse flow guide pipe 6313, a reverse osmosis check valve 6314 and a first check valve 6315;

[0148] The pure water reverse flow guide pipe 6313 is sleeved on the periphery of the second pure water output pipe 6311;

[0149] The reverse osmosis check valve 6314 is installed in the pure water reverse flow guide pipe 6313 and is located between the inner wall of the pure water reverse flow guide pipe 6313 and the outer wall of the second pure water output pipe 6311;

[0150] The rear end of the pure water reverse flow guide pipe 6313 is respectively connected to the gap between the rear end straight rod of the cross-shaped check valve 614 and the inner wall of the first pure water output pipe 612; the front end of the pure water reverse flow guide pipe 6313 is connected to the filter outlet end of the inner side of the RO membrane filter element 633;

[0151] The U-shaped edge of the valve core of the reverse osmosis check valve 6314 is embedded in the valve core installation groove recessed backwards in the reverse osmosis check valve 6314, and the front side of the valve core is provided with a plurality of slit grooves that can be opened and closed in a direction perpendicular to the axis of the valve core;

[0152] The first check valve 6315 is arranged on the outer wall of the pure water reverse flow guide pipe 6313, and is located between the outer wall of the pure water reverse flow guide pipe 6313 and the inner wall of the first shell 62; the rear end of the first check valve 6315 is connected to the filtered water re-filtering input port 611, and the front end of the first check valve 6315 is connected to the RO membrane initial filtration end of the outer side surface of the RO membrane filter element 633;

[0153] When the water pressure behind the first check valve 6315 is greater than the water pressure in front, the first check valve 6315 is in an on state; conversely, when the water pressure behind the first check valve 6315 is less than the water pressure in front, the first check valve 6315 is in a closed state.

[0154] When the water pressure behind the reverse osmosis check valve 6314 is greater than the water pressure in front, the middle of the valve core is pressed and recessed forward, the slit groove opens to the surroundings, and a gap is generated between the surrounding edges of the valve core and the valve core installation groove. The pure water that reversely flows into the pure water reverse guide pipe 6313 penetrates through the gap to the front of the reverse osmosis check valve 6314 and reaches the RO membrane filter end located on the inner side of the RO membrane filter element 633.

[0155] On the contrary, when the water pressure behind the reverse osmosis check valve 6314 is less than the water pressure in front, the slit groove shrinks toward the center and closes, the edges of the valve core are pressed against the inner side of the groove to close the gap, and the reverse osmosis check valve 6314 is closed.

[0156] As shown in Figures 9, 10 and 12, by opening and closing the valve core of the slit groove of the reverse osmosis check valve 6314, the reverse-flowing pure water can be controlled to penetrate into the filter end of the inner side of the RO membrane filter element 633, and the reverse water flow will not form a large water pressure. The reverse-flowing pure water forms a trickle to flush the RO membrane, which can avoid damage to the RO membrane due to excessive water pressure and increase the service life of the RO membrane activated carbon composite filter element.

[0157] The rear end of the first check valve 6315 is connected to the filtered water re-filtration input port 611, and the front end of the first check valve 6315 is connected to the RO membrane initial filtration end on the outer side of the RO membrane filter element 633, which can prevent the waste water containing impurities used to clean the RO membrane from entering the filtered water re-filtration input port 611 and contaminating the filtered water.

[0158] Preferably, the valve core assembly 63 further includes a valve core fixing cover 632, an air bag 635, an air bag installation box 636 and a second check valve 637;

[0159] The airbag 635 is installed in the airbag installation box 636, and the airbag installation box 636 is located in front of the RO membrane filter element 633 and the post-activated carbon filter element 634;

[0160] The valve core fixing cover 632 is installed between the RO membrane filter element 633 and the air bag installation box; a valve core through hole is provided in the middle of the valve core fixing cover 632; the edges of the valve core fixing cover 632 protrude forward to surround and abut against the outer wall of the air bag installation box 636, and the edges of the valve core fixing cover 632 protrude backward to surround and abut against the outer wall of the RO membrane filter element 633;

[0161] The second check valve 637 is installed in the valve core through hole, and is located between the front end of the post-activated carbon filter 634 and the rear end surface of the air bag 635; the inner side surface of the valve core through hole abuts against the outer side surface of the second check valve 637;

[0162] The front end of the post-activated carbon filter element 634 abuts against the rear end surface of the second check valve 637; the rear end of the second check valve 637 is connected to the filter outlet end of the post-activated carbon filter element 634, and the front end of the second check valve 637 is connected to the gap between the outer wall of the airbag 635 and the inner wall of the airbag installation box 636; gap holes are provided around the valve core of the second check valve 637 and the inner side surface of the second check valve 637;

[0163] When the water pressure behind the second check valve 637 is greater than the water pressure in front, the second check valve 637 is in a conducting state; conversely, when the water pressure behind the second check valve 637 is less than the water pressure in front, the pure water between the outer wall of the airbag 635 and the inner wall of the airbag mounting box 636 flows in reverse through the gap hole into the filter outlet end of the post-activated carbon filter element 634.

[0164] like Figure 7 and 13As shown, the valve core fixing cover 632 can prevent the installation of the RO membrane filter element 633, the post-activated carbon filter element 634 and the airbag installation box 636 from being offset, thereby avoiding the rear end of the airbag 635 from being offset, causing the elastic reaction force of the airbag 635 to be offset, thereby affecting the capacity and pressure of pure water at the filtered end of the post-activated carbon filter element 634.

[0165] When the water pressure behind the second check valve 637 is less than the water pressure in front, the pure water between the outer wall of the airbag 635 and the inner wall of the airbag mounting box 636 flows reversely into the filtration end of the post-activated carbon filter element 634 through the gap hole, reversely flushes the filtration end of the post-activated carbon filter element 634 and the initial filtration end of the post-activated carbon filter element 634, and continues to reversely flush the impurities at the RO initial filtration end through the RO membrane.

[0166] When the water pressure behind the second check valve 637 is greater than the water pressure in front, the second check valve 637 is in the on state, and the water filtered out by the RO membrane enters the gap between the outer wall of the airbag 635 and the inner wall of the airbag mounting box 636, thereby increasing the amount of stored water. At the same time, the elastic reaction force of the airbag 635 can increase the water pressure at the filtering end of the RO membrane, thereby providing a certain pressure and power for the pure water of the reverse flushing RO membrane, and providing the effect of cleaning the initial filtering end of the RO membrane.

[0167] Preferably, it also includes a filter element fixing plate 10;

[0168] The filter element fixing plate 10 is respectively provided with a hollow first fixing ring 101 and a second fixing ring 102;

[0169] The front end edges of the first installation cavity 41 and the second installation cavity 42 are fixed to the forward protruding edges of the first fixing ring 101 and the second fixing ring 102 , respectively.

[0170] like Figure 1 , 2 As shown in , 10 and 11, the installation stability of the PP cotton activated carbon composite filter element 5 and the RO membrane activated carbon composite filter element 6 can be improved, and it is also convenient to open and replace the filter element from the front side, which can improve the maintenance work efficiency.

[0171] In summary, if Figure 1-13As shown, the water purification system containing a horizontal composite filter element of the present invention includes an integrated waterway plate 7, a PP cotton activated carbon composite filter element 5 and an RO membrane activated carbon composite filter element 6. The integrated waterway plate 7 is provided with a second input pipeline, a third output pipeline and a second output pipeline, which can reduce the connected pipelines, so that the internal structure of the water purification system containing the horizontal composite filter element is more compact. The integrated waterway plate 7 has a high overall integration degree, simplifies the internal waterway connection relationship, and has the advantages of compact structure, convenient assembly and small space occupancy.

[0172] The top of the frame 4 is also provided with a first fixing groove 44 and a second fixing groove 45, which can prevent the control panel and the power supply from being splashed with water during replacement, thereby providing better safety performance.

[0173] A first TDS detection head 617 and a second TDS detection head (not shown in the figure) are provided, which can timely monitor and feedback the water quality of the output filtered water and pure water, and can timely issue reminder information for replacing the corresponding filter element.

[0174] Providing an adaptive rotating lock structure can also avoid assembly misalignment and water leakage, and can improve the assembly efficiency and assembly quality of the water purification system containing the horizontal composite filter element.

[0175] The working principle of the water purification system containing the horizontal composite filter element can be found in the attached Fig.14 .

[0176] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0177] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

[0178] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A water purification system containing a horizontal composite filter element, characterized in that: Including housing, front plate, back plate, frame, PP cotton activated carbon composite filter element, RO membrane activated carbon composite filter element and integrated waterway plate; The horizontally placed housing is provided with a cavity penetrating front and rear, and the front plate and the rear plate are respectively installed at two through holes at the front and rear ends of the cavity; The frame is mounted in the housing and located between the front plate and the rear plate; The frame is provided with a first installation cavity and a second installation cavity, the second installation cavity is located at the upper part of the frame, and the first installation cavity is located below the second installation cavity; The PP cotton activated carbon composite filter element and the RO membrane activated carbon composite filter element are installed in the first installation cavity and the second installation cavity respectively; the rear end of the PP cotton activated carbon composite filter element and the rear end of the RO membrane activated carbon composite filter element are both provided with a starting filter end and a filter outlet end; The integrated waterway plate is installed on the frame; the integrated waterway plate is arranged close to the rear end of the PP cotton activated carbon composite filter element and the rear end of the RO membrane activated carbon composite filter element; The integrated waterway plate is provided with a first input pipeline, a first output pipeline, a second input pipeline, a second output pipeline and a third output pipeline; The first input pipeline is connected to the initial filter end of the PP cotton activated carbon composite filter element and inputs tap water; the first output pipeline is connected to the filter outlet end of the PP cotton activated carbon composite filter element and outputs filtered water to the outside; the second input pipeline is connected to the initial filter end of the RO membrane activated carbon composite filter element and inputs the filtered water; the second output pipeline is connected to the filter outlet end of the RO membrane activated carbon composite filter element and outputs pure water to the outside; the third output pipeline is connected to the initial filter end of the RO membrane in the RO membrane activated carbon composite filter element and outputs waste water for cleaning impurities to the outside; The RO membrane activated carbon composite filter element comprises a first end cap assembly and a first shell; The RO membrane activated carbon composite filter element further comprises a valve core assembly; the valve core assembly comprises an RO membrane filter element and a post-activated carbon filter element; the RO membrane filter element is sleeved on the periphery of the post-activated carbon filter element; The first end cover assembly is provided with a first pure water output pipe and a cross-shaped check valve; The valve core assembly is also provided with a valve core upper cover assembly, and a second pure water output pipe protruding backward is provided in the middle of the valve core upper cover assembly, and the outer side of the edge of the rear end pipe opening of the second pure water output pipe abuts against the inner side of the edge of the input end pipe opening of the first pure water output pipe; the front end of the second pure water output pipe is connected to the filter outlet end of the RO membrane filter element; The cross-shaped check valve comprises a front straight rod and a rear straight rod, the middle part of the cross-shaped check valve extends outward in all directions; the cross-shaped check valve has a cross-shaped cross section along the axial direction of the first pure water output pipe; the rear straight rod of the cross-shaped check valve is inserted into the input end of the first pure water output pipe; a gap is left between the outer side surface of the rear straight rod and the inner wall of the first pure water output pipe; The valve core upper cover assembly is also provided with a pure water reverse flow guide pipe, a reverse osmosis check valve and a first check valve; The rear end of the first end cap assembly is adjacently provided with a filtered water re-filter input port, a pure water filter outlet, a pure water detection port and a waste water filter outlet; The pure water reverse flow guide pipe is sleeved on the periphery of the second pure water output pipe; The reverse osmosis check valve is installed in the pure water reverse flow guide pipe and is located between the inner wall of the pure water reverse flow guide pipe and the outer wall of the second pure water output pipe; The rear end of the pure water reverse flow guide pipe is respectively connected to the gap between the rear end straight rod of the cross-shaped check valve and the inner wall of the first pure water output pipe; the front end of the pure water reverse flow guide pipe is connected to the filter outlet end of the inner side of the RO membrane filter element; The U-shaped edge of the valve core of the reverse osmosis check valve is embedded in a valve core installation groove recessed backwards in the reverse osmosis check valve, and a front side surface of the valve core is provided with a plurality of slit grooves opening and closing in a direction perpendicular to the axis of the valve core; The first check valve is arranged on the outer wall of the pure water reverse flow guide pipe, and is located between the outer wall of the pure water reverse flow guide pipe and the inner wall of the first shell; the rear end of the first check valve is connected to the filtered water re-filtration input port, and the front end of the first check valve is connected to the RO membrane initial filtration end of the outer side surface of the RO membrane filter element; When the water pressure behind the first check valve is greater than the water pressure in front of the first check valve, the first check valve is in a conducting state; On the contrary, when the water pressure behind the first check valve is less than the water pressure in front of the first check valve, the first check valve is in a closed state; When the water pressure behind the reverse osmosis check valve is greater than the water pressure in front, the middle of the valve core is pressed to be sunken forward, the slit groove opens to the surroundings, and a gap is generated between the surrounding edges of the valve core and the valve core installation groove. The pure water that flows into the pure water reverse guide pipe in the reverse direction penetrates from the gap to the front of the reverse osmosis check valve and reaches the RO membrane filter end located on the inner side of the RO membrane filter element; On the contrary, when the water pressure behind the reverse osmosis check valve is less than the water pressure in front, the slit groove shrinks toward the center and closes, the gap closes, and the reverse osmosis check valve is closed.

2. The water purification system containing a horizontal composite filter element according to claim 1, characterized in that: The integrated waterway plate is provided with a tap water inlet, a purified water outlet, a waste water outlet and a domestic water outlet; The tap water input port is arranged at the input end of the first input pipeline; the purified water output port is arranged at the output end of the second output pipeline; the waste water output port is arranged at the output end of the third output pipeline; the domestic water output port is arranged at the output end of the first output pipeline; The tap water inlet, the pure water outlet, the waste water outlet and the domestic water outlet pass backward through the integrated waterway plate and the back plate; the edges of the tap water inlet, the pure water outlet, the waste water outlet and the domestic water outlet are all exposed backward on the back plate surface of the back plate.

3. The water purification system containing a horizontal composite filter element according to claim 2, characterized in that: It also includes an inlet valve, a waste valve and a pressure sensor; The water inlet valve is installed on the second input pipeline, and the water inlet valve is used to control the on-off of the filtered water in the second input pipeline; The wastewater valve is installed on the third output pipeline, and the wastewater valve is used to control the on-off of the wastewater in the third output pipeline; The pressure sensor is installed on the second output pipeline, and the pressure sensor is used to detect and feed back the pressure of the pure water output by the second output pipeline.

4. The water purification system containing a horizontal composite filter element according to claim 3, characterized in that: Also included is a booster pump and a booster pump mounting base; A third installation cavity is provided at the lower part of the frame; the third installation cavity is located below the first installation cavity, and the third installation cavity is located behind the second installation cavity; The boost pump fixing seat is installed below the third installation cavity, and the boost pump is fixed to the boost pump fixing seat; The output end of the second input pipeline is provided with a filtered water re-filtering output port; the input end of the booster pump is connected to the filtered water re-filtering output port; the output end of the booster pump is connected to the initial filtering end of the RO membrane activated carbon composite filter element; The top of the frame is also provided with a first fixing slot and a second fixing slot respectively; the first fixing slot and the second fixing slot are used to install the control board and the power supply respectively; The rear side of the frame is also provided with a forward recessed mounting groove, and the integrated waterway plate is arranged in the middle of the mounting groove; The connecting pipeline between the PP cotton activated carbon composite filter element and the integrated waterway plate passes through the top of the third installation cavity and enters the middle of the installation groove; The rear side of the first installation cavity is communicated with the upper part of the bottom of the installation groove, and the rear side of the third installation cavity is communicated with the lower part of the bottom of the installation groove; the connecting pipeline between the RO membrane activated carbon composite filter element and the integrated water circuit plate is stored in the upper part of the installation groove; the connecting pipeline between the integrated water circuit plate and the booster pump is stored in the lower part of the installation groove.

5. The water purification system containing a horizontal composite filter element according to claim 4, characterized in that: A guide groove and a fixing buckle are provided inside the first end cover assembly; The guide groove is rotated and extended from front to rear along the inner side surface of the side wall of the first end cover assembly to the rear side surface inside the side wall, and a plurality of the fixing buckles arranged at intervals are arranged near the inner edge of the guide groove, and a gap is provided between the fixing buckles and the inner edge of the guide groove; A spiral tube extending backward is provided in the middle of the rear end of the first housing, and a guide block extending in all directions is provided on the outer wall of the spiral tube, and the guide block, the fixing buckle and the guide groove form a matching rotating lock structure; The rear end of the first housing rotates from front to rear and extends into the first end cover assembly, and the rear end surface of the pipe opening of the spiral tube extends backward and abuts against the front side surface of the inner wall of the first end cover assembly; The PP cotton activated carbon composite filter element comprises a second end cover assembly and a second shell, wherein the second end cover assembly and the second shell are respectively provided with a rotating lock structure which is the same as the guide block, the fixing buckle and the guide groove structure.

6. The water purification system containing a horizontal composite filter element according to claim 5, characterized in that: Also includes a first TDS detection head and a second TDS detection head; The first output pipeline is provided with a filtered water detection port; the input end of the second output pipeline is provided with a pure water input port; the input end of the third output pipeline is provided with a waste water input port; The upwardly opening filtered water detection port, the pure water input port and the waste water input port are all arranged close to the front plate surface of the rear plate of the integrated waterway plate; the pure water input port is arranged adjacent to the left side of the waste water input port; the filtered water detection port is located on the right side of the waste water input port; The filtered water re-filter input port is connected to the output end of the booster pump; The pure water filter outlet is close to and connected to the pure water input port; The wastewater filter outlet is close to and connected to the wastewater input port; The first TDS detection head is installed at the pure water detection port, and the pure water detection port is arranged above the pure water filter outlet; the second TDS detection head is installed at the filtered water detection port; The filtered water re-filtration input port and the wastewater filtration outlet are respectively connected to the initial filtration end of the RO membrane filter element; The filtration end of the RO membrane filter element is connected to the initial filtration end of the post-activated carbon filter element; the pure water input port is connected to the filtration end of the post-activated carbon filter element.

7. The water purification system containing a horizontal composite filter element according to claim 6, characterized in that: The pure water filter outlet is arranged at the output end of the first pure water output pipe, and the input end of the first pure water output pipe extends inwardly to the middle of the first end cover assembly; A spring mounting seat is provided inside the second pure water output pipe, a middle through hole is provided in the middle of the spring mounting seat, and a spring is sleeved on the outer wall of the middle through hole; the front straight rod of the cross-shaped check valve is inserted into the middle through hole; the front end of the spring abuts against the rear side surface of the spring mounting seat located in front of the middle through hole, and the rear end of the spring abuts against the front side surface of the middle protruding part of the cross-shaped check valve; When the water pressure behind the cross-shaped check valve is greater than the backward elastic force of the spring against the cross-shaped check valve, the cross-shaped check valve slides forward, and the front side surface of the protruding part in the middle of the cross-shaped check valve abuts against the rear end pipe mouth of the middle through hole, closing the second pure water output pipe.

8. The water purification system containing a horizontal composite filter element according to claim 6, characterized in that: The valve core assembly also includes a valve core fixing cover, an air bag, an air bag installation box and a second check valve; The airbag is installed in the airbag installation box, and the airbag installation box is located in front of the RO membrane filter element and the post-activated carbon filter element; The valve core fixing cover is installed between the RO membrane filter element and the air bag installation box; a valve core through hole is provided in the middle of the valve core fixing cover; the edges of the valve core fixing cover protrude forward to surround and abut against the outer wall of the air bag installation box, and the edges of the valve core fixing cover protrude backward to surround and abut against the outer wall of the RO membrane filter element; The second check valve is installed in the valve core through hole and is located between the front end of the post-activated carbon filter element and the rear end surface of the airbag; the inner side surface of the valve core through hole abuts against the outer side surface of the second check valve; The front end of the post-activated carbon filter element abuts against the rear end surface of the second check valve; the rear end of the second check valve is connected to the filter outlet end of the post-activated carbon filter element, and the front end of the second check valve is connected to the gap between the outer wall of the airbag and the inner wall of the airbag installation box; a gap hole is provided around the valve core of the second check valve and the inner side surface of the second check valve; When the water pressure behind the second check valve is greater than the water pressure in front, the second check valve is in a conducting state; conversely, when the water pressure behind the second check valve is less than the water pressure in front, the pure water between the outer wall of the airbag and the inner wall of the airbag mounting box flows in reverse through the gap hole into the filter outlet end of the post-activated carbon filter element.

9. The water purification system containing a horizontal composite filter element according to claim 1, characterized in that: Also included is a filter element retaining plate; The filter element fixing plate is respectively provided with a hollow first fixing ring and a second fixing ring; The front end edge of the first installation cavity and the front end edge of the second installation cavity are respectively fixed to the forward protruding edges of the first fixing ring and the second fixing ring.

Images