A water softener reversing valve assembly and working method thereof

Abstract

The present invention provides a water softener reversing valve assembly, including a valve housing and a valve core, wherein a valve core cavity is formed in the valve housing, and a water inlet interface, a water outlet interface, a tank inlet interface, a tank outlet interface, a water replenishment interface and a flushing interface are provided on the valve housing; the valve core is rotatably installed in the valve core cavity, and a driving shaft is provided at the end of the valve core, and a plurality of water ports and a plurality of branch valves arranged between different water ports are formed on the valve core, and the ends of the branch valves are in contact with the guide surface in the valve housing and can achieve connection or blocking between different water ports; with the rotation of the valve core, each of the water ports can be connected with different interfaces and achieve water production, backwashing, regeneration, forward washing and water replenishment. The water softener reversing valve assembly of the present invention has been redesigned and optimized for the overall structure, and has a compact structure and a reasonable layout, which greatly reduces the overall volume and improves the space utilization rate, so that the water softener can achieve efficient operation in a limited space and can always ensure normal water use in any mode.

Description

Technical Field

[0001] The invention relates to a water softener, and in particular to a water softener reversing valve assembly and a working method thereof. Background Art

[0002] In the current field of water quality treatment, the hard water problem has always been an important problem that plagues people's lives and industrial production. Hard water, that is, water containing more soluble calcium and magnesium compounds, can cause many inconveniences in daily life. For example, when hard water is used for washing, it will react with detergents such as soap to produce substances that are difficult to dissolve, reducing the washing effect. It may also leave stains on clothes, affecting the service life of clothes. In the kitchen, hard water can easily form scale on the surface of kettles, pots, etc., which is not only difficult to clean, but also reduces heating efficiency and increases energy consumption. Long-term drinking of hard water may also pose a potential threat to human health.

[0003] As people's awareness of water safety increases, water softeners are now slowly entering ordinary people's homes. However, most water softeners on the market are medium-to-large devices, which are large in size, take up space, and have poor softening effects, making it impossible for many ordinary families to install water softeners.

[0004] As the core component of the water softener, the volume of the reversing valve assembly in the water softener determines the overall volume of the water softener. At present, the reversing valve assembly of the water softener mostly adopts a split structure with a complex structure. It uses multiple sets of independent control valves, which makes the volume too large. At the same time, it causes high manufacturing and maintenance costs, which is not conducive to the miniaturization design of household water softeners. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a water softener reversing valve assembly which has a compact structure, a small volume, a low manufacturing cost and a good use effect.

[0006] The present invention provides a water softener reversing valve assembly, which includes:

[0007] A valve housing, wherein a valve core cavity is formed in the valve housing, and the valve housing is provided with a water inlet interface 101, a water outlet interface 102, a tank inlet interface 103, a tank outlet interface 104, a water replenishment interface 401 and a flushing interface 402;

[0008] The valve core 2 is rotatably mounted in the valve core cavity, and the valve core 2 is formed with a plurality of water ports and a plurality of branch valves arranged between different water ports, and the ends of the branch valves are in contact with the guide surface in the valve housing and can realize the connection or blocking between different water ports;

[0009] As the valve core 2 rotates, each of the water ports can be connected to different interfaces to achieve water production, backwashing, regeneration, forward washing and water replenishment.

[0010] Furthermore, there is a gap between the two ends of the valve core 2 and the inner wall of the valve shell and two chambers are formed respectively. The water inlet interface 101 and the water outlet interface 102 are connected to the two chambers respectively, and the upper and lower ends of the valve core 2 are respectively provided with inlets and outlets; the tank inlet interface 103 and the tank outlet interface 104 are connected to the side wall of the valve core cavity.

[0011] Furthermore, the side wall of the valve core 2 is provided with a first water inlet 203, a second water inlet 204, a third water inlet 205, a fourth water inlet 206 and a regeneration water inlet 207 in sequence along the rotation direction, and an ejector 5 is installed in the regeneration water inlet 207; the upper end of the third water inlet 205 penetrates through the upper surface of the valve core 2 and is connected to the water inlet interface 101, a first branch valve 7 is provided between the third water inlet 205 and the lower surface of the valve core 2, and the lower end of the second water inlet 204 penetrates through the The lower bottom surface of the valve core 2 is connected to the water outlet interface 102; a second branch valve 6 is provided between the upper surface of the valve core 2 and the regeneration water port 207, and a drainage hole Ⅰ230 connected to the flushing interface 402 and a water replenishment hole Ⅰ220 coaxial with the flushing interface and connected to the water replenishment interface 401 are provided at the center of the lower surface of the valve core 2, the water replenishment hole Ⅰ220 is connected to the regeneration water port 207, and the drainage hole Ⅰ230 is connected to the first water port 203 and the fourth water port 206.

[0012] Furthermore, a coaxial inner tube body 23 and an outer tube body 22 are provided at the center of the lower surface of the valve core 2, the drainage hole I230 is formed in the inner tube body 23, and the water replenishment hole I220 is formed between the inner tube body 23 and the outer tube body 22; the inner wall of the valve shell is provided with two sets of holes that are coaxial and respectively sleeved with the inner tube body 23 and the outer tube body 22, and the two sets of holes are respectively connected with the water replenishment interface 401 and the flushing interface 402.

[0013] Furthermore, the valve housing includes a shell body 1 with open ends and an upper cover body 3 and a lower cover body 4 respectively installed on the two open ends of the shell body 1, an inner cylinder body 12 is provided in the shell body 1, a valve core cavity 120 with open ends is formed in the inner cylinder body 12, the water inlet interface 101 and the water outlet interface 102 are respectively connected to the two ends of the valve core cavity 120, and there are gaps between the two ends of the inner cylinder body 12 and the upper cover body 3 and the lower cover body 4 to form a cavity; the water replenishment interface 401 and the flushing interface 402 are arranged on the lower cover body 4, and the guide surface is arranged on the upper cover body 3 and / or the lower cover body 4.

[0014] Furthermore, the upper surface of the valve core 2 is provided with a second valve hole 208 connected to the regeneration water port 207, and the second branch valve 6 is slidably fitted in the second valve hole 208, and its sliding direction is parallel to the rotation axis of the valve core 2; a first valve hole 209 is provided between the third water port 205 and the lower surface of the valve core 2, and the first branch valve 7 is slidably fitted in the first valve hole 209, and its sliding direction is parallel to the rotation axis of the valve core 2.

[0015] Furthermore, the working angle of the first water inlet 203 is 88°-94°, the working angle of the second water inlet 204 is 48°-54°, ​​the working angle of the third water inlet 205 is 65°-75°, the working angle of the fourth water inlet 206 is 88°-94°, the working angle of the regenerated water inlet 207 is 52°-58°, and the phase difference between the tank inlet interface 103 and the tank outlet interface 104 is 60°-75°.

[0016] Furthermore, when making water, the third water inlet 205 is connected to the tank inlet interface 103, the second water inlet 204 is connected to the tank outlet interface 104, and the first branch valve 7 and the second branch valve 6 are in a closed state;

[0017] During backwashing, the fourth water inlet 206 is connected to the tank inlet interface 103, the third water inlet 205 is connected to the tank outlet interface 104, the first branch valve 7 is in an open state, and the second branch valve 6 is in a closed state;

[0018] During normal washing, the second water inlet 204 and the third water inlet 205 are connected to the tank inlet interface 103 at the same time, the first water inlet 203 is connected to the tank outlet interface 104, and the first branch valve 7 and the second branch valve 6 are in a closed state;

[0019] During regeneration, the first water inlet 203 is connected to the tank inlet interface 103, the regeneration water inlet 207 is connected to the tank outlet interface 104, and the first branch valve 7 and the second branch valve 6 are in an open state;

[0020] When replenishing water, the second water inlet 204 is connected to the tank inlet interface 103, the first water inlet 203 is connected to the tank outlet interface 104, and the first branch valve 7 and the second branch valve 6 are in an open state.

[0021] Furthermore, the regeneration water inlet 207 is a circular hole and its axis is perpendicular to the rotation axis of the valve core 2, and the inner wall of the regeneration water inlet 207 is provided with an internal thread for installing the ejector 5; the side wall of the salt absorption area of ​​the ejector 5 in the regeneration water inlet 207 is connected to the water replenishment hole I220, and the second valve hole 208 is connected to the end of the regeneration water inlet 207.

[0022] Furthermore, the ejector 5 includes a first valve core section 51a and a second valve core section 51b that are coaxially arranged and interconnected, a gap is provided between the first valve core section 51a and the second valve core section 51b to form a salt absorption zone, the water replenishment hole I220 is connected to the salt absorption zone, both ends of the first valve core section 51a are penetrated by liquid inlet holes, the liquid inlet end of the liquid inlet hole is conical, both ends of the second valve core section 51b are penetrated by liquid outlet holes coaxial with the liquid inlet hole, the outlet end of the liquid outlet hole is expanded to form a diffusion zone; the side wall of the first valve core section 51a or the second valve core section 51b is provided with an external thread, and the end of the first valve core section 51a or the second valve core section 51b is provided with an operating hole 520 for driving it to rotate so as to install it in the regenerated water inlet 207.

[0023] At the same time, the present invention also provides a working method of a water softener reversing valve assembly, which drives the valve core 2 to rotate through a driving device and realizes the switching of different working modes, and the working modes include water production mode, backwash mode, forward wash mode, regeneration mode and water replenishment mode;

[0024] In the water production mode, the third water inlet 205 is connected to the tank inlet interface 103, the second water inlet 204 is connected to the tank outlet interface 104, and the first branch valve 7 and the second branch valve 6 are in a closed state. At this time, the water entering the water inlet interface 101 enters the third water inlet 205 through the inlet on the top surface of the valve core, and enters the second water inlet 204 after passing through the tank inlet interface 103, the resin tank, and the tank outlet interface 104 in sequence, and enters the water outlet interface 102 from the outlet at the lower end of the second water inlet 204, thereby realizing water production;

[0025] In the backwash mode, the fourth water inlet 206 is connected to the tank inlet interface 103, the third water inlet 205 is connected to the tank outlet interface 104, the first branch valve 7 is in an open state, and the second branch valve 6 is in a closed state. At this time, the water entering the water inlet interface 101 enters the third water inlet 205 through the inlet on the top surface of the valve core 2, and the water in the third water inlet 205 is divided into two branches, one of which enters the lower bottom surface of the valve core 2 through the first branch valve 7 and enters the water outlet interface 102; the other enters the fourth water inlet 206 after passing through the tank outlet interface 104, the resin tank, and the tank inlet interface 103 in sequence, and is discharged from the flushing interface 402 after passing through the drainage hole Ⅰ230 at the lower end of the valve core 2;

[0026] In the forward washing mode, the second water inlet 204 and the third water inlet 205 are connected to the tank inlet interface 103 at the same time, the first water inlet 203 is connected to the tank outlet interface 104, the first branch valve 7 and the second branch valve 6 are in a closed state, at this time, the water entering the water inlet interface 101 enters the third water inlet 205 and the tank inlet interface 103 in turn through the inlet on the top surface of the valve core 2, and the water in the tank inlet interface 103 is divided into two paths, one path enters the second water inlet 204, and enters the water outlet interface 102 from the outlet at the lower end of the second water inlet 204, and the other path enters the first water inlet 203 after passing through the resin tank and the tank outlet interface 104, and is discharged from the flushing interface 402 after passing through the drainage hole Ⅰ230 at the lower end of the valve core 2;

[0027] In the regeneration mode, the first water inlet 203 is connected to the tank inlet interface 103, the regeneration water inlet 207 is connected to the tank outlet interface 104, and the first branch valve 7 and the second branch valve 6 are in the open state. At this time, the water entering from the water inlet interface 101 is divided into two paths, one of which enters the regeneration water inlet 207 and the ejector 5 through the second branch valve 6. When the water passes through the ejector 5, a negative pressure is formed on the water replenishment hole I. The salt water in the salt valve connected to the water replenishment interface enters the ejector 5. After the salt water and the raw water are mixed, they enter the first water inlet 203 through the tank outlet interface 104, the resin tank, and the tank inlet interface 103 in turn, and enter the flushing interface 402 through the drainage hole I at the lower end of the valve core 2 for discharge. The other path enters the third water inlet 205 through the inlet on the top surface of the valve core 2, and enters the lower bottom surface of the valve core 2 through the first branch valve 7 and enters the water outlet interface 102;

[0028] In the water replenishment mode, the second water inlet 204 is connected to the tank inlet interface 103, the first water inlet 203 is connected to the tank outlet interface 104, the first branch valve 7 and the second branch valve 6 are in the open state, at this time, the water entering from the water inlet interface 101 is branched into two paths, one path enters the third water inlet 205 through the inlet on the upper surface of the valve core 2, and enters the bottom of the valve core 2 and enters the water outlet interface 102 after passing through the first branch valve 7, and the other path enters the regeneration water port 207 after passing through the second branch valve 6, and enters the water replenishment interface 401 after passing through the water replenishment hole I, to replenish the salt valve connected to the water replenishment interface 401.

[0029] The water softener reversing valve assembly of the present invention optimizes and improves the valve body structure, concentrates the water inlet on the valve core, and controls it through the branch valve, making the layout of each interface more reasonable, greatly reducing the number of parts, improving the structural compactness of the reversing valve, improving space utilization, reducing the volume, and contributing to the miniaturized design of the valve body and the water softener; a gap structure is used to form a flow channel and serve as the water inlet and outlet, which simplifies the water channel connection, reduces the manufacturing cost, and has good operating reliability; the water replenishment hole and the drain port are arranged on the lower cover body, which optimizes the pipeline layout, reduces the manufacturing process difficulty and cost, and is convenient for overall assembly; the guide surfaces are arranged on the upper and lower covers, which can improve the structural compactness, help reduce the overall structural volume, and is conducive to the miniaturized design of the water softener; the directions of each interface are designed to facilitate the overall assembly of the valve body and the pipeline docking, convenient disassembly, and daily maintenance and maintenance; the water inlet and the valve hole are integrated on a valve core body, which has a compact structure and a small volume, ensures the accurate switching of each station, has a long service life, and is excellent The overall performance of the water softener is improved, and at the same time, it is conducive to the miniaturized design of the overall structure of the water softener; the integrated valve core is adopted to reduce the number of connecting parts, reduce the risk of leakage, improve the reliability and stability of the system, facilitate installation and maintenance, and improve the working efficiency and user experience of the water softener; the multi-station design makes the switching of each station more flexible, reduces the complexity of operation, and further improves the overall performance and durability of the water softener; the integrated valve core is re-designed to optimize the water outlet distribution, improve the space utilization rate, make the valve core structure compact, and reduce the overall volume of the valve core, which is conducive to the miniaturization and lightweight of the overall structure of the water softener; the water softener reversing valve assembly of the present invention redesigns and optimizes the overall structure, has a compact structure and a reasonable layout, greatly reduces the overall volume, improves the space utilization rate, enables the water softener to achieve efficient operation in a limited space, and can always ensure normal water use in any mode, meet the needs of modern families for miniaturized and intelligent home appliances, and improve the quality of life of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the water softener reversing valve assembly of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the water softener reversing valve assembly from another angle of the present invention;

[0032] Figure 3 It is a transverse cross-sectional view of the water softener reversing valve assembly of the present invention;

[0033] Figure 4 It is a longitudinal cross-sectional view of the water softener reversing valve assembly of the present invention;

[0034] Figure 5 It is a schematic diagram of the exploded structure of the water softener reversing valve assembly of the present invention;

[0035] Figure 6 It is a schematic diagram of the installation of the branch valve and the ejector of the water softener reversing valve assembly of the present invention;

[0036] Figure 7 It is a cross-sectional view of the valve housing of the water softener reversing valve assembly of the present invention;

[0037] Figure 8 Another planar cross-sectional view of the valve housing of the water softener reversing valve assembly of the present invention;

[0038] Fig. 9 It is a structural schematic diagram of the valve core of the water softener reversing valve assembly of the present invention;

[0039] Fig.10 It is a transverse cross-sectional view of the valve core of the water softener reversing valve assembly of the present invention;

[0040] Fig.11 A first longitudinal cross-sectional view of a valve core of a water softener reversing valve assembly of the present invention;

[0041] Fig.12 A second longitudinal cross-sectional view of the valve core of the water softener reversing valve assembly of the present invention;

[0042] Fig.13 A third longitudinal sectional view of the valve core of the water softener reversing valve assembly of the present invention;

[0043] Fig.14 A fourth longitudinal cross-sectional view of the valve core of the water softener reversing valve assembly of the present invention;

[0044] Fig.15 It is a structural schematic diagram of the ejector of the water softener reversing valve assembly of the present invention;

[0045] Fig.16 It is a cross-sectional view of the ejector of the water softener reversing valve assembly of the present invention;

[0046] Fig.17 It is a schematic diagram of the installation of the second branch valve of the water softener reversing valve assembly of the present invention;

[0047] Fig.18 for Fig.17 Enlarged view of part A in the middle;

[0048] Fig.19 It is a schematic diagram of the installation of the first branch valve of the water softener reversing valve assembly of the present invention;

[0049] Fig. 20 for Fig.19 Enlarged view of middle part B;

[0050] Fig.21 It is a structural schematic diagram of the upper cover body of the water softener reversing valve assembly of the present invention;

[0051] Fig. 22 It is a structural schematic diagram of the lower cover of the water softener reversing valve assembly of the present invention;

[0052] Fig.23 It is a schematic diagram of the water flow direction of the water softener reversing valve assembly of the present invention when making water;

[0053] Fig.24 It is a schematic diagram of the water flow direction of the water softener reversing valve assembly during backwashing of the present invention;

[0054] Fig.25 It is a schematic diagram of the water flow direction of the water softener reversing valve assembly of the present invention during normal washing;

[0055] Fig.26 It is a schematic diagram of the water flow direction of the water softener reversing valve assembly during regeneration of the present invention;

[0056] Fig. 27 It is a schematic diagram of the water flow direction when the water softener reversing valve assembly of the present invention is replenished with water.

[0057] In the figure: 1, shell, 11, outer shell, 12, inner cylinder, 101, water inlet interface, 102, water outlet interface, 103, tank inlet interface, 104, tank outlet interface, 111, screw hole, 120, valve core cavity, 1010, first gap, 1020, second gap, 1030, first connecting hole, 1040, second connecting hole, 2, valve core, 2a, second working surface, 2b, third working surface, 21, drive shaft, 22, outer tube body, 23, inner tube body, 25, positioning convex point, 201, water inlet, 202, water outlet, 203, first water outlet, 204, second water outlet, 205, third water outlet, 206, fourth water outlet, 207, regeneration water outlet, 208, second valve hole, 209, first valve hole, 220, water replenishment hole I, 230, drainage hole I, 231, second connecting hole, 2201, first connecting hole, 2071, flow channel hole, 3, upper cover body, 33, fourth annular body, 35a, second guide surface, 4, lower cover body, 44, water replenishment hole II, 45, third annular body, 46a, first guide surface, 401, water replenishment interface, 402, flushing interface, 5, ejector, 51a, first valve core section, 51b, second valve core section, 501, liquid inlet hole II, 502, liquid inlet hole I, 503, liquid outlet hole I, 504, liquid outlet hole II, 520, operating hole, 6, second branch valve, 7, first branch valve. DETAILED DESCRIPTION

[0058] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0059] See also Figure 1-Figure 23The present invention provides a water softener reversing valve assembly, which includes a valve housing and a valve core 2. The valve housing is used as an installation carrier, and a valve core cavity 120 is formed in the valve housing. The valve housing is provided with a water inlet interface 101, a water outlet interface 102, a tank inlet interface 103, a tank outlet interface 104, a water replenishment interface 401 and a flushing interface 402, wherein the water inlet interface 101 is used to connect with the water inlet end, the water outlet interface 102 is connected with the water outlet end, the tank inlet interface 103 is used to connect with the inlet end of the resin tank, the tank outlet interface 104 is used to connect with the outlet end of the resin tank, the water replenishment interface 401 is used to connect with the salt valve, and the flushing interface 402 is used to Connected to the drain end; the valve core 2 is rotatably installed in the valve core cavity 120, and a driving shaft 21 is provided at one end of the valve core 2, which is used to connect with a driving device as the rotating power end of the valve core 2. A plurality of water outlets and a plurality of branch valves arranged between different water outlets are formed on the valve core 2, and the end of the branch valve is in contact with the guide surface in the valve shell, and the guide surface is an undulating curved surface. Through the rotation of the valve core 2, the guide surface can drive the branch valve to move axially to realize the connection or blocking between different water outlets; at the same time, with the rotation of the valve core 2, each water outlet can be connected with different interfaces, thereby realizing water production, backwashing, regeneration, forward washing and water replenishment.

[0060] In the present application, there is a gap between the two ends of the valve core 2 and the inner wall of the valve shell, forming two chambers respectively, the water inlet interface 101 and the water outlet interface 102 are connected to the two chambers respectively, and inlets are provided at the upper and lower ends of the valve core 2 respectively, and the two inlets and outlets are connected to the two chambers respectively, which serve as the water inlet end and water outlet end of the valve core 2. Since the inlet and outlet ends of the valve core 2 are arranged at the ends of the valve core 2, therefore, no matter how the valve core 2 is rotated to any angle, its two ends are always connected to the water inlet interface 101 and the water outlet interface 102; the tank inlet interface 103 and the tank outlet interface 104 are connected to the side wall of the valve core cavity 120, which are located on the same radial plane and on different axial planes, that is, they have a certain phase difference.

[0061] In the present application, the side wall of the valve core 2 is provided with a first water inlet 203, a second water inlet 204, a third water inlet 205, a fourth water inlet 206 and a regeneration water inlet 207 in sequence along the rotation direction (radial direction), and an ejector 5 is installed in the regeneration water inlet 207, which is mainly used to generate negative pressure through jets for absorbing salt in the regeneration mode; the upper end of the third water inlet 205 penetrates through the upper surface of the valve core 2 and is connected to the water inlet interface 101, which serves as the water inlet end of the valve core 2, and a first branch valve 7 is provided between the third water inlet 205 and the lower surface of the valve core 2, through which the first branch valve 7 can realize the connection or blocking between the third water inlet 205 and the lower surface of the valve core. , the lower surface of the valve core is the water outlet end of the valve core, the lower end of the second water outlet 204 passes through the lower bottom surface of the valve core and is connected to the water outlet interface 102, which serves as the water outlet end of the valve core 2. Therefore, through the axial movement of the first branch valve 7, the connection or blocking of the third water outlet 205 with the outlet end of the valve core can be achieved; a second branch valve 6 is provided between the upper surface of the valve core 2 and the regeneration water outlet 207. Through the axial movement of the second branch valve 6, the connection or blocking between the upper surface of the valve core 2 and the regeneration water outlet 207 can be achieved. The upper surface of the valve core is the inlet end. Therefore, through the second branch valve 6, the connection or blocking of the regeneration water outlet 207 with the inlet end is achieved.

[0062] A drainage hole Ⅰ230 connected to the flushing interface 402 and a water replenishment hole Ⅰ220 coaxial with the flushing interface 402 and connected to the water replenishment interface 401 are provided at the center of the lower surface of the valve core 2, wherein the water replenishment hole Ⅰ220 is connected to the regeneration water inlet 207, and the drainage hole Ⅰ230 is connected to the first water inlet 203 and the fourth water inlet 206; specifically, a coaxial inner tube body 23 and an outer tube body 22 are provided at the center of the lower surface of the valve core 2, the drainage hole Ⅰ230 is formed in the inner tube body 23, and a water replenishment hole Ⅰ220 is formed between the inner tube body 23 and the outer tube body 22. Water supply hole I 220; at the same time, two sleeve holes are provided on the inner wall of the valve shell, which are coaxial and respectively sleeved with the inner tube body 23 and the outer tube body 22. The two sleeve holes are respectively connected with the water supply interface 401 and the flushing interface 402. The above two sleeve holes respectively form a water supply hole II and a drainage hole II. The water supply hole II is always connected with the water supply hole I, and the drainage hole II is always connected with the drainage hole I. At the same time, the above inner and outer tube bodies and the two sleeve holes serve as the rotation center of the valve core 2 and as the central axis to ensure the operating stability and reliability of the valve core.

[0063] The valve shell includes a shell body 1 with open ends and an upper cover body 3 and a lower cover body 4 respectively installed on the two open ends of the shell body 1. An inner cylinder body 12 is provided in the shell body 1, and a valve core cavity 120 with open ends is formed in the inner cylinder body 12. The water inlet interface 101 and the water outlet interface 102 are respectively connected to the two ends of the valve core cavity 120, as the water inlet and outlet ends of the valve core 2, and there are gaps between the two ends of the inner cylinder body 12 and the upper cover body 3 and the lower cover body 4 to form a cavity, and the two cavities are respectively connected to the water inlet interface 101 and the water outlet interface 102; the water replenishment interface 401 and the flushing interface 402 are arranged on the lower cover body 4, and the guide surface is arranged on the upper cover body 3 and / or the lower cover body 4. In the present application, guide surfaces are provided on the upper cover body 3 and the lower cover body 4, and the two guide surfaces are respectively in contact with the ends of the first branch valve and the second branch valve, and are respectively used to control the opening or closing of the first branch valve and the second branch valve to form different passages.

[0064] Through the rotation of the valve core 2, the reversing valve assembly has the functions of water production, backwashing, regeneration, forward washing and water replenishment;

[0065] When making water, the third water inlet 205 is connected to the tank inlet interface 103, the second water inlet 204 is connected to the tank outlet interface 104, and the first branch valve 7 and the second branch valve 6 are both in a closed state;

[0066] During backwashing, the fourth water inlet 206 is connected to the tank inlet interface 103, and the third water inlet is connected to the tank outlet interface 104, wherein the first branch valve 7 is in an open state, and the second branch valve 6 is in a closed state;

[0067] During normal washing, the second water inlet 204 and the third water inlet 205 are connected to the tank inlet interface 103 at the same time, the first water inlet 203 is connected to the tank outlet interface 104, and the first branch valve 7 and the second branch valve 6 are both in a closed state;

[0068] During regeneration, the first water inlet 203 is connected to the tank inlet interface 103, the regeneration water inlet 207 is connected to the tank outlet interface 104, and the first branch valve 7 and the second branch valve 6 are both in the open state;

[0069] When replenishing water, the second water inlet 204 is connected to the tank inlet interface 103, the first water inlet 203 is connected to the tank outlet interface 104, and the first branch valve 7 and the second branch valve 6 are both in an open state.

[0070] The structure of the valve housing and the valve core 2 is described in detail below:

[0071] See also Figure 1-Figure 8 , Fig.21 and Fig. 22A valve core cavity 120 is formed in the valve housing for installing the valve core 2. The valve core 2 is cylindrical and can realize radial rotation, thereby realizing switching between the water ports. Therefore, the valve core cavity 120 is also cylindrical. Two water ports and two resin tank interfaces are provided on the side wall of the valve housing, wherein the two water ports are respectively connected with the two ends of the valve core cavity 120 to realize water inlet and water outlet. The two resin tank interfaces are respectively connected with the inlet and outlet ends of the resin tank to realize functions such as soft water production and regeneration. It is connected with the side wall of the valve core cavity. At the same time, the two resin tank interfaces are located on different radial planes, that is, the two have a phase difference. In the present application, the phase difference between the two resin tank interfaces is 60°-75°, which is conducive to the reasonable arrangement of the water ports of the valve core, improves space utilization, and realizes miniaturized design.

[0072] A drainage hole II and a water replenishment hole II are provided at the lower end of the valve core cavity 120, and the drainage hole II and the water replenishment hole II are coaxial with the valve core cavity. Therefore, at least one is a circular hole. In the present embodiment, the drainage hole II is a circular hole, and the water replenishment hole II is a circular hole; at the same time, a flushing interface 402 and a water replenishment interface 401 are provided at the bottom of the valve shell, wherein the flushing interface 402 is connected with the drainage hole II, and the water replenishment interface 401 is connected with the water replenishment hole II, thereby forming six different interfaces, and the switching between the interfaces is realized by rotating the valve core to form different working modes.

[0073] A guide surface is provided at the upper end or the lower end of the valve core cavity 120. The guide surface is annular, and its end surface serves as a working surface for contacting the end of the branch valve on the valve core to guide the axial movement of the branch valve to achieve opening or closing, thereby enabling the water outlets on the valve core to be connected or blocked, thereby achieving connection control between different flow channels. An axial hole is opened at the top of the valve housing, which is connected to the valve core cavity 120 and is coaxial with the valve core cavity 120 to accommodate the driving shaft 21 on the valve core to pass through, so as to drive the valve core 2 in the valve body.

[0074] In the present application, the valve housing comprises a shell 1, an upper cover 3 and a lower cover 4, wherein a mounting cavity is formed in the shell 1. In the present embodiment, the shell comprises a cylindrical outer shell 11, a cylindrical mounting cavity with open ends formed in the outer shell, an inner cylinder 12 is provided in the mounting cavity, the inner cylinder 12 is cylindrical and coaxial with the shell 1, a valve core cavity 120 is formed in the inner cylinder 12, the valve core cavity 120 is cylindrical, the valve core cavity 120 is coaxial with the shell 1, and its two ends are open (open), and the upper end of the inner cylinder 12 is lower than the upper end of the shell 1, and the lower end of the inner cylinder 12 is higher than the lower end of the shell 1, that is, both ends of the inner cylinder 12 are shorter than the length of the two ends of the shell, so that both ends of the inner cylinder 12 are located on the inner side of the two ends of the mounting cavity.

[0075] The interface in the present application includes an inlet interface 101 and an outlet interface 102, wherein the inlet interface 101 is connected to the upper end of the valve core cavity 120 but not to the lower end of the valve core cavity, and the outlet interface 102 is connected to the lower end of the valve core cavity 120 but not to the upper end of the valve core cavity. Specifically, the inlet interface 101 is connected to the upper end of the valve core cavity 120 through a first gap 1010 at the upper end of the valve core cavity 120, and the first gap 1010 is the gap between the upper end of the valve core cavity (inner cylinder) and the upper cover body; and the outlet interface 102 is connected to the lower end of the valve core cavity 120 through a second gap 1020 at the lower end of the valve core cavity 120, and the second gap 1020 is the gap between the lower end of the valve core cavity 120 (inner cylinder 12) and the lower cover body 4.

[0076] The resin tank interface includes an inlet tank interface 103 and an outlet tank interface 104, both of which are connected to the inner wall of the valve core cavity 120, and the connection with the valve core cavity 120 is located on different axial planes of the valve core cavity. In this application, the two connection points are located on the same radial plane, and there is a certain phase difference between the two, that is, the valve core rotates a certain angle to reach the outlet tank interface 104 from the inlet tank interface 103 to achieve different waterway switching. In this embodiment, the center of the valve core cavity 120 is taken as the center of the circle, and the inlet tank interface 103 and the outlet tank interface The phase difference (central angle) between 104 is 60°-75°; in the present application, a first connecting hole 1030 and a second connecting hole 1040 are provided on the side wall of the valve core cavity 120, wherein the first connecting hole 1030 is connected to the tank inlet interface 103, serving as the connecting point between the tank inlet interface 103 and the valve core cavity 120, and the second connecting hole 1040 is connected to the tank outlet interface 104, serving as the connecting point between the tank outlet interface 104 and the valve core cavity 120, and the above-mentioned phase difference is the angle difference between the first connecting hole and the second connecting hole.

[0077] In order to improve the compactness of the structure and facilitate assembly, in the present application, the two water inlets and the two resin tank interfaces are parallel to each other, and the two water inlets are located on one side of the shell, and the two resin tank interfaces are located on the other side of the shell.

[0078] The upper cover body 3 is sealed and installed at the upper open end of the shell (installation cavity), and the lower cover body 4 is sealed and installed at the lower open end of the shell (installation cavity), so that the installation cavity forms a sealed cavity, and the valve core cavity 120 is located in the sealed cavity. Both ends of the valve core cavity 120 are open. Since its ends are shorter than the axial length of the installation cavity, there are gaps between both ends of the valve core cavity 120 and the upper cover body 3 and the lower cover body 4, so that water can flow through to form a flow channel; the drainage hole II and the water replenishment hole II are arranged on the lower cover body 4, and the axial hole is arranged on the upper cover body 3.

[0079] The above-mentioned upper cover body 3 and lower cover body 4 both include a cover plate, and an annular protrusion with the same cross-sectional shape as the installation cavity is provided at the end (end face) of the cover plate, and the annular protrusion can be just inserted into the installation cavity of the shell, and its outer wall fits the inner wall of the installation cavity, thereby realizing coaxial positioning. At the same time, corresponding positioning protrusions and positioning grooves are provided between the cover plate and the shell, and the two can cooperate with each other to realize radial positioning between the cover plate and the shell; a sealing ring is provided between the annular protrusion and the open end of the shell 1, thereby forming a sealed chamber in the installation cavity, and at the same time, mounting holes are provided on the edges of the upper cover body 3 and the lower cover body 4, and corresponding screw holes 111 are provided at the two open ends of the shell, and the upper cover body 3 and the lower cover body 4 are fixed to the two ends of the shell by bolts to form a valve shell.

[0080] Specifically, the upper cover body 3 includes a circular upper cover plate, and a plurality of first mounting holes are evenly distributed circumferentially on the edge of the upper cover plate, which serve as a connecting component; a first annular protrusion in a circular shape is provided at the lower end of the upper cover plate, and the outer wall diameter of the first annular protrusion is the same as the inner diameter of the mounting cavity, and it can just be inserted into the upper open end of the mounting cavity to achieve coaxial positioning. In order to facilitate quick insertion, a chamfer can be set at the end of the first annular protrusion or the end of the upper open end of the mounting cavity to form an inclined guide surface, thereby improving assembly efficiency; a first sealing ring mounting groove is provided on the outer wall of the first annular protrusion, and the first sealing ring mounting groove is an annular groove.

[0081] A coaxial fourth annular body and a fifth annular body are provided at the center of the lower surface of the upper cover body 3, the axial hole is provided at the center of the fourth annular body 33, and the inner wall of the fourth annular body 33 serves as a pivot point of the rotating shaft of the valve core, so as to improve the smoothness of the rotation and the operation accuracy of the valve core; a downward-facing second guide surface 35a is provided between the fourth annular body 33 and the fifth annular body, and the second guide surface 35a is a circular ring, and its lower end surface serves as a working surface with a certain degree of undulation, which is used to guide the axial movement of the second branch valve 6 on the valve core to realize the opening or closing of the second branch valve 6.

[0082] The lower cover body 4 includes a circular lower cover plate, and a plurality of second mounting holes are evenly distributed circumferentially along the edge of the lower cover plate, which serve as a connecting piece with the shell; a second annular protrusion is provided at the upper end of the lower cover plate, and the outer wall diameter of the second annular protrusion is the same as the inner diameter of the mounting cavity, and it can just be inserted into the lower open end of the mounting cavity to achieve coaxial positioning. In order to facilitate quick insertion, a chamfer can be provided at the end of the second annular protrusion or the end of the lower open end of the mounting cavity to form an inclined guide surface, thereby improving assembly efficiency; a second sealing ring mounting groove is provided on the outer wall of the second annular protrusion for mounting the sealing ring, and the second sealing ring mounting groove is an annular groove structure.

[0083] At the same time, a coaxial first annular body and a second annular body are provided at the center of the upper surface of the lower cover body 4, a drainage hole I is formed in the first annular body, and the drainage hole I is a circular hole, and a water replenishment hole II44 is formed between the first annular body and the second annular body, and the water replenishment hole II44 is a circular annular hole, which is respectively used to be sleeved with the circular tube body at the lower end of the valve core to realize pipeline docking. Specifically, the water replenishment hole II is docked with the water replenishment hole I, and the drainage hole II is docked with the drainage hole I; a drainage pipe and a water replenishment pipe are provided at the lower end of the lower cover body 4, the drainage pipe is connected with the drainage hole II, and the water replenishment pipe is connected with the water replenishment hole II44.

[0084] At the same time, the first annular body or the second annular body is connected to the flow channel pipe body at the lower end of the valve core to achieve pipeline docking and can serve as a rotation fulcrum of the valve core to improve the running stability of the valve core.

[0085] To facilitate assembly and docking, in the present application, the water supply pipe and the drain pipe are coaxially arranged, both perpendicular to and intersecting with the axis of the lower cover body 4, and their length direction is parallel to the direction of the water inlet (outlet), which is convenient for assembly in the water softener, wherein the water supply interface is arranged on the water supply pipe, and the flushing interface is arranged on the drain pipe.

[0086] At the same time, a third annular body 45 is also provided on the upper surface of the lower cover body 4. The third annular body 45 is coaxial with the second annular body and is located outside the second annular body. An upward first guide surface 46a is provided between the second annular body and the third annular body 45. The upper end surface of the first guide surface 46a serves as a working surface, which has a certain degree of undulation and is used to guide the axial movement of the first branch valve 7 on the valve core to realize the opening or closing of the first branch valve 7.

[0087] See also Figure 9-14 The valve core 2 is a cylindrical structure, and a driving shaft 21 is provided at the upper end of the valve core 2. The driving shaft 21 is coaxial with the valve core 2, and a connecting portion is provided at its end for connecting with a driving device, thereby driving the valve core to rotate and realizing the switching of each workstation. In the present application, the connecting portion is a spline.

[0088] The side wall of the valve core 2 serves as a first working surface, on which a first water inlet 203, a second water inlet 204, a third water inlet 205, a fourth water inlet 206 and a regeneration water inlet 207 are sequentially arranged along the rotation (radial) direction, wherein the regeneration water inlet 207 is used to install an ejector 5, which is a salt absorption device for absorbing salt. In the present application, the regeneration water inlet 207 is a circular hole, the axis of which is perpendicular to the axis of the valve core. Preferably, the axis of the regeneration water inlet 207 is perpendicular to and intersects with the axis of the valve core. At the same time, an internal thread is provided on the inner wall of the regeneration water inlet 207 for installing and fixing the ejector 5. In the present application, the internal thread is arranged at the open end of the regeneration water inlet 207.

[0089] The above-mentioned rotation direction can be leftward or rightward, which means that the water outlets are arranged in sequence in the radial direction of the first working surface.

[0090] The upper surface of the valve core 2 serves as the second working surface 2a, which serves as the water inlet end (surface). A water inlet 201 and a second valve hole 208 are provided on the second working surface 2a, wherein the second valve hole 208 is a circular hole, and its axis is parallel to the axis of the valve core 2. The side wall of the second valve hole 208 is connected with the regeneration water port 207, which is used to install the second branch valve 6, thereby enabling the connection or blocking of the regeneration water port 207 with the second valve hole (second working surface). In the present application, the end of the regeneration water port 207 is connected with the side wall of the second valve hole 208 through the flow channel hole 2071; the water inlet 201 is connected with the third water port 205, serving as the total water inlet (end) of the valve core. In the present embodiment, the upper end of the third water port 205 passes through the top surface of the valve core, that is, the upper end of the third water port 205 is open to form the water inlet 201, which serves as the water inlet end.

[0091] In order to achieve a reasonable layout of the valve core, improve the compactness of the structure and reduce the volume, in the present application, the second valve hole 208 is arranged at the end of the regeneration water inlet 207, which can reduce the occupied space (angle) of the second valve hole 208 and improve the compactness of the structure.

[0092] The lower surface of the valve core 2 serves as the third working surface 2b, which serves as the water outlet end. A water outlet 202 and a first valve hole 209 are provided on the third working surface 2b, wherein the water outlet 202 is connected with the second water outlet 204. The water outlet 202 serves as a total water outlet for outputting soft water. In this embodiment, the lower end of the second water outlet 204 passes through the lower bottom surface of the valve core 2, that is, the lower end of the second water outlet 204 is open to form the water outlet 202 as the water outlet end; the first valve hole 209 is a circular hole, and its axis is parallel to the axis of the valve core. The first valve hole 209 is connected with the third water outlet 205, and is used to install the first branch valve 7. The first branch valve 7 is used to control the connection or blocking between the third working surface and the third water outlet.

[0093] At the same time, a drainage hole Ⅰ230 and a water replenishment hole Ⅰ220 are provided at the center of the third working surface, wherein the drainage hole Ⅰ230 is a central hole arranged downwards and is coaxial with the valve core 2, and the water replenishment hole Ⅰ220 is annular and is arranged on the outside of the drainage hole Ⅰ230 and is coaxial with the valve core. At the same time, the water replenishment hole Ⅰ220 is connected with the regeneration water port 207. Specifically, a first connecting hole 2201 is opened at the top of the water replenishment hole Ⅰ220, and the first connecting hole 2201 is located directly below the regeneration water port 207 and is connected with the regeneration water port 207. The connecting hole 2201 serves as a brine inlet and can enter the regenerated water outlet 207 through negative pressure. Therefore, the diameter of the first connecting hole 2201 is relatively small. At the same time, the drainage hole I 230, the first water outlet 203 and the fourth water outlet 206 are interconnected. Specifically, a second connecting hole 231 is provided on the top of the drainage hole I 230. The ends of the second connecting hole 231 extend to both sides and are respectively connected to the first water outlet 203 and the fourth water outlet 206 to achieve the connection between the three. The diameter of the above-mentioned second connecting hole 231 is relatively small and is used to discharge flushing waste water.

[0094] To facilitate assembly and rotation installation, in the present application, an inner tube body 23 and an outer tube body 22 are provided at the center of the third working surface 2b, wherein the inner tube body 23 is coaxial with the valve core 2, and the outer tube body 22 is also coaxial with the valve core 2, and its diameter is larger than the diameter of the inner tube body 23, and is located on the outside of the inner tube body, and there is a gap between the outer wall of the inner tube body 23 and the inner wall of the outer tube body 22 to form a circular channel, forming a water replenishment hole Ⅰ220, and a drainage hole Ⅰ230 is formed in the inner tube body. After assembly, the inner tube body and the outer tube body can be used as rotating support parts to improve the stability of operation and ensure its rotation accuracy.

[0095] In order to facilitate assembly and improve stability, a downward step surface is provided on the outer walls of the inner tube body 23 and the outer tube body 22. The step surface is used to dock with the hole on the valve cover and facilitate the installation of the sealing ring, thereby improving the sealing and ensuring the stable operation of the valve body; and the lower end surface of the inner tube body 23 is higher than the lower end surface of the outer tube body 22, which is convenient for improving the compactness of the structure, and then facilitates the compact design of the lower cover body and reduces the overall thickness.

[0096] In order to further reduce the volume of the reversing valve, especially the thickness dimension, in the present application, the upper surface of the valve core is concave downward to form a circular ring-shaped second working surface, and at the same time, the lower surface of the valve core is concave upward to form a circular ring-shaped third working surface, which helps to reduce the overall thickness dimension of the reversing valve and improve the compactness of the structure.

[0097] There are seal installation grooves between the second working surface and the first working surface, between the third working surface and the first working surface, and between each water inlet (including the regeneration water inlet) of the first working surface for installing seals to ensure the sealing between the water inlets (including the regeneration water inlet) on each working surface. The design of the seal installation groove not only improves the overall sealing effect, but also facilitates daily maintenance and replacement, extending the service life of the equipment.

[0098] Specifically, a plurality of sealing ring installation grooves are provided on the side wall of the valve core, and the plurality of sealing ring installation grooves divide the first working surface into five workstations, and the first water inlet 203, the second water inlet 204, the third water inlet 205, the fourth water inlet 206 and the regeneration water inlet 207 are sequentially arranged at each workstation.

[0099] In the present application, the above-mentioned five stations include the first station, the second station, the third station, the fourth station and the fifth station in sequence along the rotation direction. Each station is provided with a corresponding sealing ring installation groove to ensure the sealing performance between the stations. The first water inlet 203 is set at the first station, the second water inlet 204 is set at the second station, the third water inlet 205 is set at the third station, the fourth water inlet 206 is set at the fourth station, and the regeneration water inlet 207 is set at the fifth station.

[0100] In this embodiment, the working angle of the first water outlet 203 is 88°-94°, the working angle of the second water outlet 204 is 48°-54°, ​​the working angle of the third water outlet 205 is 65°-75°, the working angle of the fourth water outlet 206 is 88°-94°, and the working angle of the regeneration water outlet is 52°-58°. After assembly, the water outlets can be reasonably arranged between the water inlets and outlets of the valve body, and the switching of connection and blockage between the outlets can be realized.

[0101] At the same time, in order to facilitate assembly and quickly determine the installation angle of the valve core, and to facilitate daily maintenance and care, in this application, one or more positioning protrusions 25 are provided on the second working surface to quickly determine the angle of the valve core.

[0102] See also Figure 15-16The ejector 5 is used for absorbing salt in the regeneration mode, and is composed of a first valve core section 51a and a second valve core section 51b. The first valve core section 51a and the second valve core section 51b are both cylindrical, have the same outer diameter and are coaxially arranged. The first valve core section 51a and the second valve core section 51b are connected to each other to form a whole. There is a gap between the first valve core section 51a and the second valve core section 51b to form a salt absorption area, which is used to generate negative pressure and absorb salt water. The salt absorption area is connected to the water replenishment hole, and liquid inlet holes are penetrated at both ends of the first valve core section 51a. The liquid inlet hole is a central hole, that is, the liquid inlet hole is coaxial with the first valve core section 51a, and the liquid inlet end of the liquid inlet hole is conical. Specifically, the liquid inlet hole includes a liquid inlet hole I 502, and the inlet end of the liquid inlet hole I 502 is expanded (the diameter is increased) to form a conical liquid inlet hole II 501, that is, the liquid inlet hole II 501 is a conical structure with a large inlet end and a small outlet end, and the liquid inlet direction is from the liquid inlet direction to the liquid outlet direction. From the perspective of direction, it is a contraction structure, which helps to guide the fluid to smoothly enter the liquid inlet hole I, thereby increasing the flow rate; liquid outlet holes are penetrated at both ends of the second valve core section 51b, and the liquid outlet hole is coaxial with the liquid inlet hole. The liquid discharged from the liquid inlet hole enters the liquid outlet hole at a high speed, and the outlet end of the liquid outlet hole is expanded (the diameter is increased) to form a diffusion zone. Specifically, the liquid outlet hole includes a liquid outlet hole I 503 facing the liquid inlet hole, and the diameter of the liquid outlet hole I 503 is larger than the diameter of the liquid inlet hole I 502. The outlet end of the liquid outlet hole I 503 is expanded (the diameter is increased) to form a tapered liquid outlet hole II 504. The liquid outlet hole II serves as a diffusion zone. The tapered structure of the liquid outlet hole II 504 helps the liquid to diffuse rapidly, forming a Venturi effect as a whole, achieving efficient attraction and uniform distribution of brine, improving the salt absorption efficiency, and ensuring the stable operation of the water softener; and in the present application, the diameter of the end of the diffusion zone is larger than the end diameter of the liquid inlet hole II 501, and the diffusion effect is good.

[0103] An external thread is provided on the side wall of the first valve core segment 51a or the second valve core segment 51b. At the same time, an operating hole 520 is provided at the end of the first valve core segment 51a or the second valve core segment 51b, which is used to drive the valve core to rotate through a tool and then fix it to the valve hole of the valve body. The design of the operating hole 520 is convenient for installation and maintenance. In the present application, the operating hole 520 is a regular polygonal hole, which can be a cross structure or a hexagonal hole, so as to facilitate operation with standard tools, assembly and daily maintenance.

[0104] A second valve hole 208 is provided on the upper end surface of the valve core 2. The second valve hole 208 is a circular hole, and its axis is parallel to the rotation axis of the valve core 2. At the same time, a flow channel hole 2071 is provided on the side wall of the second valve hole 208. The flow channel hole 2071 is connected to the end of the regeneration water port 207. A second branch valve 6 is provided in the second valve hole 208. The second branch valve 6 can realize axial sliding, and its sliding direction is parallel to the axis of the valve core 2. At the same time, an elastic component is provided in the second valve hole 208. The elastic component makes the second branch valve 6 have an outward movement tendency. A sealing ring is provided on the side wall of the second branch valve. By moving up and down, the flow channel hole 2071 can be opened or closed, thereby realizing the connection or blocking between the regeneration water port and the upper surface of the valve core (i.e., the water inlet end).

[0105] A first valve hole 209 is opened in the third water outlet, and a first branch valve 7 is installed in the first valve hole 209. The first branch valve 7 can realize axial sliding, and its sliding direction is parallel to the rotation axis of the valve core 2. At the same time, an elastic component is provided on the valve core. The elastic component makes the first branch valve 7 have a downward movement tendency so that its end is in contact with the guide surface. A sealing gasket is provided at the end of the first branch valve. The sealing gasket is opened or closed by the axial movement of the first branch valve, so as to realize the connection or blocking between the third water outlet and the lower end surface of the valve core (i.e., the water outlet end).

[0106] The working method of the reversing valve assembly in this application is described below:

[0107] The valve core 2 is driven to rotate by a driving device to realize the switching of different working modes, including water production mode, backwash mode, forward wash mode, regeneration mode and water replenishment mode;

[0108] See also Fig.23 In the water making mode, the third water inlet 205 is connected to the tank inlet interface 103, the second water inlet 204 is connected to the tank outlet interface 104, and the first branch valve 7 and the second branch valve 6 are in a closed state. At this time, the water entering the water inlet interface 101 enters the third water inlet 205 through the inlet on the top surface of the valve core, and enters the second water inlet 204 after passing through the tank inlet interface 103, the resin tank, and the tank outlet interface 104 in turn, and enters the water outlet interface 102 from the outlet at the lower end of the second water inlet 204 to achieve water making.

[0109] See also Fig.24, in the backwash mode, the fourth water port 206 is connected to the inlet tank interface 103, the third water port 205 is connected to the outlet tank interface 104, the first branch valve 7 is in the open state, and the second branch valve 6 is in the closed state. At this time, the water entering from the water inlet interface 101 enters the third water port 205 through the inlet on the top surface of the valve core. The water in the third water port 205 branches into two paths. One path enters the bottom surface of the valve core through the first branch valve 7 and then enters the water outlet interface 102; the other path sequentially passes through the outlet tank interface 104, the resin tank, the inlet tank interface 103 and then enters the fourth water port 206. Since the fourth water port is connected to the drain hole, it is discharged from the flushing interface 402 through the drain hole Ⅰ 230 at the lower end of the valve core; in the backwash mode, by opening the first branch valve 7, the normal water use during backwashing is ensured.

[0110] Refer to Fig.25 , in the normal flushing mode, the second water port 204 and the third water port 205 are both connected to the inlet tank interface 103, the first water port 203 is connected to the outlet tank interface 104, and the first branch valve 7 and the second branch valve 6 are in the closed state. At this time, the water entering from the water inlet interface 101 enters the third water port 205 and the inlet tank interface 103 in sequence after passing through the inlet on the top surface of the valve core. Since the second water port and the third water port are both connected to the inlet tank interface, the water in the inlet tank interface 103 branches into two paths. One path enters the second water port 204 and exits from the outlet at the lower end of the second water port and enters the water outlet interface 102, and the other path passes through the resin tank, the outlet tank interface 104 and then enters the first water port 203, and is discharged from the flushing interface 402 through the drain hole Ⅰ 230 at the lower end of the valve core; in the normal flushing mode, by connecting the second water port to the inlet tank interface, the normal water use during normal flushing is ensured.

[0111] Refer to Fig.26 , in the regeneration mode, the first water port 203 is connected to the inlet tank interface 103, the regeneration water port 207 is connected to the outlet tank interface 104, and the first branch valve 7 and the second branch valve 6 are in the open state. At this time, the water entering from the water inlet interface 101 branches into two paths. One path enters the regeneration water port 207 and the ejector 5 through the second branch valve 6. When the water passes through the ejector, a negative pressure is formed on the water replenishing hole Ⅰ, and the brine in the salt valve connected to the water replenishing interface enters the ejector 5. After the brine and the raw water are mixed, they sequentially pass through the outlet tank interface 104, the resin tank, the inlet tank interface 103 and then enter the first water port 203, and enter the flushing interface 402 after passing through the drain hole Ⅰ at the lower end of the valve core; the other path enters the third water port 205 through the inlet on the top surface of the valve core, and enters the bottom surface of the valve core after passing through the first branch valve 7 and enters the water outlet interface 102; in the regeneration mode, by opening the second branch valve 6, the normal water use during the regeneration mode is ensured.

[0112] Refer to Fig. 27In the water replenishment mode, the second water inlet 204 is connected to the tank inlet interface 103, the first water inlet 203 is connected to the tank outlet interface 104, the first branch valve 7 and the second branch valve 6 are in the open state, at this time, the water entering from the water inlet interface 101 is divided into two paths, one path enters the third water inlet 205 through the inlet on the upper surface of the valve core, and enters the bottom of the valve core after passing through the first branch valve 7, and enters the water outlet interface 102; the other path enters the regeneration water inlet 207 after passing through the second branch valve 6. Because the other end of the ejector is blocked, the Venturi phenomenon cannot be formed, and suction cannot be generated to form a water replenishment waterway. The water enters the water replenishment interface 401 after passing through the water replenishment hole I to replenish the salt valve; in the water replenishment mode, the normal water use in the water replenishment mode is ensured by opening the second branch valve 6.

[0113] The water softener reversing valve assembly of the present invention optimizes and improves the valve body structure, concentrates the water inlet on the valve core, and controls it through the branch valve, making the layout of each interface more reasonable, greatly reducing the number of parts, improving the structural compactness of the reversing valve, improving space utilization, reducing the volume, and contributing to the miniaturized design of the valve body and the water softener; a gap structure is used to form a flow channel and serve as the water inlet and outlet, which simplifies the water channel connection, reduces the manufacturing cost, and has good operating reliability; the water replenishment hole and the drain port are arranged on the lower cover body, which optimizes the pipeline layout, reduces the manufacturing process difficulty and cost, and is convenient for overall assembly; the guide surfaces are arranged on the upper and lower covers, which can improve the structural compactness, help reduce the overall structural volume, and is conducive to the miniaturized design of the water softener; the directions of each interface are designed to facilitate the overall assembly of the valve body and the pipeline docking, convenient disassembly, and daily maintenance and maintenance; the water inlet and the valve hole are integrated on a valve core body, which has a compact structure and a small volume, ensures the accurate switching of each station, has a long service life, and is excellent The overall performance of the water softener is improved, and at the same time, it is conducive to the miniaturized design of the overall structure of the water softener; the integrated valve core is adopted to reduce the number of connecting parts, reduce the risk of leakage, improve the reliability and stability of the system, facilitate installation and maintenance, and improve the working efficiency and user experience of the water softener; the multi-station design makes the switching of each station more flexible, reduces the complexity of operation, and further improves the overall performance and durability of the water softener; the integrated valve core is re-designed to optimize the water outlet distribution, improve the space utilization rate, make the valve core structure compact, and reduce the overall volume of the valve core, which is conducive to the miniaturization and lightweight of the overall structure of the water softener; the water softener reversing valve assembly of the present invention redesigns and optimizes the overall structure, has a compact structure and a reasonable layout, greatly reduces the overall volume, improves the space utilization rate, enables the water softener to achieve efficient operation in a limited space, and can always ensure normal water use in any mode, meet the needs of modern families for miniaturized and intelligent home appliances, and improve the quality of life of users.

[0114] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A water softener reversing valve assembly, characterized in that: include: A valve housing, wherein a valve core cavity is formed in the valve housing, and the valve housing is provided with a water inlet interface, a water outlet interface, a tank inlet interface, a tank outlet interface, a water replenishment interface and a flushing interface; A valve core is rotatably mounted in the valve core cavity, and a plurality of water ports and a plurality of branch valves arranged between different water ports are formed on the valve core, and the ends of the branch valves are in contact with the guide surface in the valve housing and can realize the connection or blocking between different water ports; The side wall of the valve core is provided with a first water inlet, a second water inlet, a third water inlet, a fourth water inlet and a regeneration water inlet in sequence along the rotation direction, and an ejector is installed in the regeneration water inlet; the upper end of the third water inlet penetrates to the upper surface of the valve core and is connected to the water inlet interface, a first branch valve is provided between the third water inlet and the lower surface of the valve core, and the lower end of the second water inlet penetrates to the lower bottom surface of the valve core and is connected to the water outlet interface; a second branch valve is provided between the upper surface of the valve core and the regeneration water inlet, a drainage hole I connected to the flushing interface and a water replenishment hole I coaxial with the flushing interface and connected to the water replenishment interface are provided at the center of the lower surface of the valve core, the water replenishment hole I is connected to the regeneration water inlet, and the drainage hole I is connected to the first water inlet and the fourth water inlet; As the valve core rotates, each of the water ports can be connected to different interfaces to achieve water production, backwashing, regeneration, forward washing and water replenishment; The first branch valve is opened during backwashing, regeneration and water replenishment, and is closed in other states; The second branch valve is opened during regeneration and water replenishment, and is closed in other states.

2. The water softener reversing valve assembly according to claim 1, characterized in that: There is a gap between the two ends of the valve core and the inner wall of the valve shell, and two chambers are formed respectively. The water inlet interface and the water outlet interface are connected to the two chambers respectively; the tank inlet interface and the tank outlet interface are connected to the side wall of the valve core cavity.

3. The water softener reversing valve assembly according to claim 1, characterized in that: A coaxial inner tube body and an outer tube body are arranged at the center of the lower surface of the valve core, the drainage hole I is formed in the inner tube body, and the water replenishment hole I is formed between the inner tube body and the outer tube body; the inner wall of the valve shell is provided with two sets of coaxial holes which are respectively sleeved with the inner tube body and the outer tube body, and the two sets of holes are respectively connected with the water replenishment interface and the flushing interface.

4. The water softener reversing valve assembly according to claim 1, characterized in that: The valve housing includes a shell body with open ends and an upper cover body and a lower cover body respectively installed on the two open ends of the shell body, an inner cylinder body is provided in the shell body, a valve core cavity with open ends is formed in the inner cylinder body, the water inlet interface and the water outlet interface are respectively connected with the two ends of the valve core cavity, and there are gaps between the two ends of the inner cylinder body and the upper cover body and the lower cover body to form a cavity; the water replenishment interface and the flushing interface are arranged on the lower cover body, and the guide surface is arranged on the upper cover body and / or the lower cover body.

5. The water softener reversing valve assembly according to claim 1, characterized in that: A second valve hole connected to the regeneration water port is provided on the upper surface of the valve core, and the second branch valve is slidably fitted in the second valve hole, and its sliding direction is parallel to the rotation axis of the valve core; a first valve hole is provided between the third water port and the lower surface of the valve core, and the first branch valve is slidably fitted in the first valve hole, and its sliding direction is parallel to the rotation axis of the valve core.

6. The water softener reversing valve assembly according to claim 1, characterized in that: The working angle of the first water outlet is 88°-94°, the working angle of the second water outlet is 48°-54°, ​​the working angle of the third water outlet is 65°-75°, the working angle of the fourth water outlet is 88°-94°, the working angle of the regeneration water outlet is 52°-58°, and the phase difference between the tank inlet interface and the tank outlet interface is 60°-75°.

7. The water softener reversing valve assembly according to claim 1, characterized in that: When making water, the third water inlet is connected to the tank inlet interface, the second water inlet is connected to the tank outlet interface, and the first branch valve and the second branch valve are in a closed state; During backwashing, the fourth water inlet is connected to the tank inlet interface, the third water inlet is connected to the tank outlet interface, the first branch valve is in an open state, and the second branch valve is in a closed state; During normal washing, the second water inlet and the third water inlet are simultaneously connected to the tank inlet interface, the first water inlet is connected to the tank outlet interface, and the first branch valve and the second branch valve are in a closed state; During regeneration, the first water inlet is connected to the tank inlet interface, the regeneration water inlet is connected to the tank outlet interface, and the first branch valve and the second branch valve are in an open state; When replenishing water, the second water inlet is connected to the tank inlet interface, the first water inlet is connected to the tank outlet interface, and the first branch valve and the second branch valve are in an open state.

8. The water softener reversing valve assembly according to claim 5, characterized in that: The regeneration water inlet is a circular hole and its axis is perpendicular to the rotation axis of the valve core. The inner wall of the regeneration water inlet is provided with an internal thread for installing an ejector; the side wall of the salt absorption area of ​​the ejector in the regeneration water inlet is connected to the water replenishment hole I, and the second valve hole is connected to the end of the regeneration water inlet.

9. A working method of a water softener reversing valve assembly according to any one of claims 1 to 8, characterized in that: The valve core is driven to rotate by a driving device to realize the switching of different working modes, including water production mode, backwash mode, forward wash mode, regeneration mode and water replenishment mode; In the water production mode, the third water inlet is connected to the tank inlet interface, the second water inlet is connected to the tank outlet interface, and the first branch valve and the second branch valve are in a closed state. At this time, the water entering the water inlet interface enters the third water inlet through the inlet on the top surface of the valve core, and enters the second water inlet after passing through the tank inlet interface, the resin tank, and the tank outlet interface in sequence, and enters the water outlet interface from the outlet at the lower end of the second water inlet, thereby realizing water production; In the backwash mode, the fourth water inlet is connected to the tank inlet interface, the third water inlet is connected to the tank outlet interface, the first branch valve is in an open state, and the second branch valve is in a closed state. At this time, the water entering the water inlet interface enters the third water inlet through the inlet on the top surface of the valve core, and the water in the third water inlet is divided into two branches, one of which enters the lower bottom surface of the valve core through the first branch valve and enters the water outlet interface; the other enters the fourth water inlet after passing through the tank outlet interface, the resin tank, and the tank inlet interface in sequence, and is discharged from the flushing interface after passing through the drainage hole I at the lower end of the valve core; In the forward washing mode, the second water inlet and the third water inlet are connected to the tank inlet interface at the same time, the first water inlet is connected to the tank outlet interface, the first branch valve and the second branch valve are in a closed state, at this time, the water entering the water inlet interface enters the third water inlet and the tank inlet interface in turn through the inlet on the top surface of the valve core, the water in the tank inlet interface is branched into two paths, one path enters the second water inlet and enters the water outlet interface from the outlet at the lower end of the second water inlet, and the other path enters the first water inlet after passing through the resin tank and the tank outlet interface, and is discharged from the flushing interface after passing through the drainage hole I at the lower end of the valve core.

10. The working method of the water softener reversing valve assembly according to claim 9, characterized in that: In the regeneration mode, the first water inlet is connected to the tank inlet interface, the regeneration water inlet is connected to the tank outlet interface, and the first branch valve and the second branch valve are in the open state. At this time, the water entering from the water inlet interface is divided into two paths, one of which enters the regeneration water inlet and the ejector through the second branch valve. When the water passes through the ejector, negative pressure is formed on the water replenishment hole I. The salt water in the salt valve connected to the water replenishment interface enters the ejector. After the salt water and the raw water are mixed, they enter the first water inlet through the tank outlet interface, the resin tank, and the tank inlet interface in turn, and enter the flushing interface through the drainage hole I at the lower end of the valve core for discharge. The other path enters the third water inlet through the inlet on the top surface of the valve core, and enters the lower bottom surface of the valve core through the first branch valve and enters the water outlet interface. In the water replenishment mode, the second water inlet is connected to the tank inlet interface, the first water inlet is connected to the tank outlet interface, the first branch valve and the second branch valve are in the open state, at this time, the water entering from the water inlet interface is divided into two paths, one path enters the third water inlet through the inlet on the upper surface of the valve core, and enters the lower surface of the valve core and the water outlet interface after passing through the first branch valve, and the other path enters the regeneration water inlet after passing through the second branch valve, and enters the water replenishment interface after passing through the water replenishment hole I, to replenish the salt valve connected to the water replenishment interface.

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