A multifunctional softening valve for water treatment

Abstract

The present invention relates to the technical field of water treatment, and particularly to a multifunctional softening valve for water treatment. The multifunctional softening valve for water treatment includes a valve body, a movable valve plate, a fixed valve plate and a driving device. An inlet, an outlet, a drain port and a brine suction port are provided on the side wall of the valve body, and an electric water stop valve is connected to the outlet; the fixed valve plate corresponds to the valve body up and down. A fixed valve plate central hole and fixed valve plate water inlet holes, fixed valve plate water passing holes, fixed valve plate backwash holes, fixed valve plate normal wash holes and first, second and third blind plates of the fixed valve plate are arranged along the circumferential direction with the same central axis on the fixed valve plate. The horizontal cross-sectional area of the fixed valve plate water passing hole is the same as that of the water outlet cavity on the valve body; a movable valve plate central blind hole and an inlet through groove, a drain conduction blind hole, an outlet conduction blind hole and first, second and third blind plates of the movable valve plate are arranged along the circumferential direction with the same central axis on the movable valve plate. Under the conditions of the same installation dimensions and the same softening capacity of the same function, the valve body volume of the present invention can be made smaller, reducing the manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and particularly relates to a multifunctional softening valve for water treatment. Background Art

[0002] In the prior art, for the control valve used in the softening water treatment equipment with an end face sealing structure in production or life, its valve core is usually composed of a movable valve plate and a fixed valve plate with a pair of end faces sealingly connected to each other. By rotating the movable valve plate, the water flow output inside the valve core is controlled, and the direction and flow rate of the water flow output are changed, so as to respectively perform backwashing, regeneration, normal flushing, salt tank water injection and normal operation on the filter material (such as ion exchange resin), so as to achieve the purpose of softening the water.

[0003] Chinese Patent Application Publication No. CN114811106A discloses a multifunctional softening valve. The multifunctional softening valve includes a valve body, a movable valve plate and a fixed valve plate. An inlet, an outlet, a drain port, a brine inlet and a regeneration port are arranged on the radial direction of the valve body; the fixed valve plate corresponds to the valve body up and down, and a fixed valve plate water inlet hole and a fixed valve plate water outlet hole are arranged on the fixed valve plate. The central angle corresponding to the fixed valve plate water inlet hole is at least 60°, and the central angle corresponding to the fixed valve plate water outlet hole is at least 90°. The fixed valve plate water outlet hole includes a fixed valve plate first water outlet hole and a fixed valve plate second water outlet hole which are separated from each other along the radial direction; an inlet through groove, an outlet conduction blind hole and a drain conduction blind hole are arranged on the movable valve plate. The central angle corresponding to the inlet through groove is the same as the central angle corresponding to the fixed valve plate water inlet hole, the central angle corresponding to the outlet conduction blind hole is the same as the central angle corresponding to the fixed valve plate water outlet hole, and the central angle corresponding to the drain conduction blind hole is at least 30°.

[0004] Compared with the softening valve in the prior art, the multifunctional softening valve disclosed in the above patent has a larger inlet area and outlet area, and has higher water outlet performance and water outlet efficiency. However, in the water production state, the soft water needs to pass through the fixed valve plate first water outlet hole and then over the fixed valve plate second water outlet hole in sequence before flowing out from the outlet, resulting in that the area of the fixed valve plate water outlet hole cannot be utilized to the maximum extent, which limits the water output of the softening valve. That is, when producing the same flow rate of soft water, the valve body volume of the softening valve needs to be made larger, which undoubtedly increases the manufacturing cost. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a multifunctional softening valve for water treatment, so as to solve the technical problems that in the case of realizing the same function of softening ability and the same installation size, the multifunctional softening valve in the prior art has a larger volume and a higher manufacturing cost.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A multifunctional softening valve for water treatment, comprising a valve body, a fixed valve plate fixed on the valve body, and a movable valve plate rotatably assembled on the valve body. The fixed valve plate and the movable valve plate are rotationally and sealingly matched. An inlet, an outlet, a drain port, and a brine suction port are arranged in the radial direction of the valve body. The valve body is also provided with a first filter element interface, a second filter element interface, a third filter element interface, and a fourth filter element interface;

[0008] When in use, an electric stop valve is connected to the outlet;

[0009] Inside the valve body, a first valve cavity and a second valve cavity are sequentially arranged from outside to inside in the radial direction. The second valve cavity includes a central drain cavity and an inlet cavity, an outlet cavity, a backwash cavity, a regeneration inlet cavity, a flushing cavity, and a brine suction and injection cavity that are arranged in a fan-shaped ring cross-section along the circumferential direction and concentric with the central axis outside the central drain cavity of the valve body. The central drain cavity is communicated with the drain port, the inlet cavity is communicated with the first filter element interface, the outlet cavity is communicated with the second filter element interface, the backwash cavity is communicated with the third filter element interface, and the flushing cavity is communicated with the fourth filter element interface;

[0010] The fixed valve plate is provided with a fixed valve plate central hole and a fixed valve plate inlet hole, a fixed valve plate water passage hole, a fixed valve plate backwash hole, a first fixed valve plate blind plate, a fixed valve plate flushing hole, a second fixed valve plate blind plate, and a third fixed valve plate blind plate that are arranged in a fan-shaped ring cross-section along the circumferential direction and concentric with the central axis outside the fixed valve plate central hole. A regeneration inlet hole is opened on the first fixed valve plate blind plate, a brine mixing inlet hole is opened on the second fixed valve plate blind plate. The fixed valve plate central hole is coaxial and communicated with the central drain cavity, and the horizontal cross-sectional area of the fixed valve plate water passage hole is the same as the horizontal cross-sectional area of the outlet cavity;

[0011] The movable valve plate is coaxially arranged with the fixed valve plate. The movable valve plate is provided with a movable valve plate central blind hole and an inlet through groove, a first movable valve plate blind plate, a drain conduction blind hole, a second movable valve plate blind plate, an outlet conduction blind hole, and a third movable valve plate blind plate that are arranged in a fan-shaped ring cross-section along the circumferential direction and concentric with the central axis outside the movable valve plate central blind hole. The horizontal cross-sectional area of the inlet through groove is the same as that of the fixed valve plate inlet hole, and the drain conduction blind hole is communicated with the fixed valve plate central blind hole.

[0012] Further, the part of the fixed valve plate outside the fixed valve plate central hole is equally divided into twelve parts in area along the circumferential direction. The fixed valve plate inlet hole occupies at least two parts, and the fixed valve plate water passage hole occupies at least three parts; the part of the movable valve plate outside the movable valve plate central blind hole is equally divided into twelve parts in area along the circumferential direction, and the drain conduction blind hole occupies at least one part.

[0013] Preferably, the water inlet holes of the fixed valve plate are divided into two equal parts, the water passing holes of the fixed valve plate are divided into three equal parts, and the drainage conduction blind holes are divided into two equal parts; the central angles corresponding to the regions where the water inlet holes, water inlet grooves, water inlet cavities, backwashing cavities, backwashing holes of the fixed valve plate, regenerative water inlet cavities, normal washing cavities, and drainage conduction blind holes of the fixed valve plate perform their corresponding functions at the functional positions are all 60°; the central angles corresponding to the regions where the water passing holes, water outlet cavities, and water outlet conduction blind holes of the fixed valve plate perform their corresponding functions at the functional positions are all 90°.

[0014] Furthermore, the regenerative water inlet hole and the brine mixing water inlet hole have the same external shape characteristics, and both are arranged at the edge position close to the fixed valve plate.

[0015] Preferably, the water inlet holes of the fixed valve plate are divided into two equal parts, and the corresponding central angle is 60°; the water passing holes of the fixed valve plate are divided into three equal parts, and the corresponding central angle is 90°; the drainage conduction blind holes are divided into one equal part, and the corresponding central angle is 30°.

[0016] Preferably, the water inlet holes of the fixed valve plate are divided into two equal parts, and the corresponding central angle is 60°; the water passing holes of the fixed valve plate are divided into four equal parts, and the corresponding central angle is 120°; the drainage conduction blind holes are divided into one equal part, and the corresponding central angle is 30°, or the drainage conduction blind holes are divided into two equal parts, and the corresponding central angle is 60°.

[0017] Preferably, the water inlet holes of the fixed valve plate are divided into two equal parts, and the corresponding central angle is 60°; the water passing holes of the fixed valve plate and the backwashing holes of the fixed valve plate are combined into one hole, which is divided into five equal parts, and the corresponding central angle is 150°; the drainage conduction blind holes are divided into one equal part, and the corresponding central angle is 30°, or the drainage conduction blind holes are divided into two equal parts, and the corresponding central angle is 60°.

[0018] Preferably, the valve body is integrally injection-molded.

[0019] Furthermore, the water outlet cavity and the backwashing cavity are combined into one valve cavity.

[0020] The beneficial effects of the multifunctional softening valve for water treatment of the present invention are:

[0021] 1. Compared with the multi-functional softening valve of the prior art, in the multi-functional softening valve for water treatment of the present invention, there is no partition beam in both the water passage holes of the fixed valve plate and the water outlet cavity, that is, the horizontal cross-sectional area of the water passage holes of the fixed valve plate is the same as the horizontal cross-sectional area of the water outlet cavity. When making water, after the softened water enters the water outlet cavity through the central pipe, there is no need to change the water outlet path through the fixed valve plate anymore, but directly flows out along the water outlet from the water outlet cavity. At this time, the planar area where the softened water flows in the water outlet cavity is the horizontal cross-sectional area of the water outlet cavity. Compared with the multi-functional softening valve of the prior art, under the conditions of the same installation size (the size limit of the filter material tank mouth) and the same function of softening capacity (the same water output of softened water), the valve body volume of the softening valve for water treatment of the present invention can be made smaller, thereby saving the production materials of the valve body and reducing the production cost of the valve body. Similarly, compared with the multi-functional softening valve of the prior art, under the conditions of the same installation size (the size limit of the filter material tank mouth) and the same volume, the water output of softened water of the softening valve for water treatment of the present invention is larger and the water production efficiency is higher.

[0022] 2. When the volume of the valve body is reduced, the sizes of other supporting accessories and driving devices of the valve body are also reduced, which can save more production materials and further reduce the manufacturing cost.

[0023] 3. Compared with the multi-functional softening valve of the prior art, the area ratio of the drainage conduction blind holes on the moving valve plate is larger. Description of the Drawings

[0024] Figure 1 is the schematic diagram of the external structure of the multi-functional softening valve for water treatment of the present invention;

[0025] Figure 2 is the three-dimensional structure schematic diagram of the valve body of the multi-functional softening valve for water treatment of the present invention;

[0026] Figure 3 is the top view of the valve body of the multi-functional softening valve for water treatment of the present invention;

[0027] Figure 4 is the bottom view of the valve body of the multi-functional softening valve for water treatment of the present invention;

[0028] Figure 5 is the top view of the valve body of the multi-functional softening valve for water treatment of the present invention after installing the fixed valve plate;

[0029] Figure 6 is the three-dimensional view of the valve body of the multi-functional softening valve for water treatment of the present invention after installing the fixed valve plate;

[0030] Figure 7 is the structural schematic diagram of the fixed valve plate of the multi-functional softening valve for water treatment of the present invention;

[0031] Figure 8It is a schematic structural diagram of the moving valve plate of the multifunctional softening valve for water treatment of the present invention;

[0032] Figure 9 It is a schematic diagram of the relative position (viewed from below) of the moving valve plate and the fixed valve plate of the multifunctional softening valve of the present invention in the water production state;

[0033] Figure 10 It is a schematic diagram of the relative position (viewed from below) of the moving valve plate and the fixed valve plate of the multifunctional softening valve of the present invention in the backwashing state;

[0034] Figure 11 It is a schematic diagram of the relative position (viewed from below) of the moving valve plate and the fixed valve plate of the multifunctional softening valve of the present invention in the regeneration state;

[0035] Figure 12 It is a schematic diagram of the relative position (viewed from below) of the moving valve plate and the fixed valve plate of the multifunctional softening valve of the present invention in the normal flushing state;

[0036] Figure 13 It is a schematic diagram of the relative position (viewed from below) of the moving valve plate and the fixed valve plate of the multifunctional softening valve of the present invention in the salt tank water injection state.

[0037] Reference numerals: 1 - valve body, 2 - water inlet, 3 - water outlet, 4 - drain outlet, 5 - brine suction port, 6 - driving device, 7 - first valve cavity, 8 - central drain cavity, 9 - water inlet cavity, 10 - water outlet cavity, 11 - backwashing cavity, 12 - regeneration water inlet cavity, 13 - normal flushing cavity, 14 - brine suction and water injection cavity, 15 - first filter element interface, 16 - second filter element interface, 17 - third filter element interface, 18 - fourth filter element interface, 19 - fixed valve plate, 20 - moving valve plate, 21 - fixed valve plate water inlet hole, 22 - fixed valve plate water passage hole, 23 - first blind plate of fixed valve plate, 24 - second blind plate of fixed valve plate, 25 - backwashing hole of fixed valve plate, 26 - normal flushing hole of fixed valve plate, 27 - regeneration water inlet hole, 28 - brine mixing water inlet hole, 29 - central hole of fixed valve plate, 30 - water inlet through groove, 31 - first blind plate of moving valve plate, 32 - second blind plate of moving valve plate, 33 - water outlet conduction blind hole, 34 - drain conduction blind hole, 35 - central blind hole of moving valve plate, 36 - third blind plate of fixed valve plate, 37 - third blind plate of moving valve plate, 38 - fourth blind plate of moving valve plate. Detailed implementation manners

[0038] The present invention will be further described in detail below with reference to the drawings and specific implementation manners.

[0039] Specific embodiments of the multifunctional softening valve for water treatment of the present invention:

[0040] Such as Figures 1 to 11As shown in the figure, the multi-functional softening valve for water treatment includes an integrally injection-molded valve body 1, a fixed valve plate 19 fixed inside the valve body 1, a moving valve plate 20 rotatably assembled inside the valve body 1, and a driving device 6 for driving the rotation of the moving valve plate 20. The moving valve plate 20 and the fixed valve plate 19 are rotationally and sealingly matched inside the valve body 1. On the two opposite sides in the radial direction of the valve body 1, a water inlet 2 and a water outlet 3 are respectively provided. Both the water inlet 2 and the water outlet 3 are arranged at the same height of the valve body 1, and the water inlet 2 and the water outlet 3 are coaxially arranged. On both sides of the valve body 1 between the water inlet 2 and the water outlet 3 in the radial direction, a drain port 4 and a brine suction port 5 are respectively provided. During use, an electric water stop valve is connected to the water outlet 3. The driving device 6 is a common gear-fork driving mechanism, which will not be elaborated here in detail.

[0041] As Figure 2 and Figure 3 shown in the figure, the valve body 1 has a first valve cavity 7 and a second valve cavity that are coaxially arranged and separated. Among them, the first valve cavity 7 is communicated with the water inlet 2. The central position of the second valve cavity is a central drain cavity 8, and the central drain cavity 8 is communicated with the above-mentioned drain port 4. The part of the second valve cavity outside the central drain cavity 8 is equally divided into twelve parts in terms of area along the circumferential direction, that is, an inlet cavity 9, an outlet cavity 10, a backwash cavity 11, a regeneration inlet cavity 12, a flushing cavity 13, and a brine suction and water injection cavity 14 that are concentric with the central drain cavity 8 and have a fan-shaped cross-section are arranged counterclockwise in sequence along the circumferential direction. Among them, the inlet cavity 9, the backwash cavity 11, the regeneration inlet cavity 12, and the flushing cavity 13 each account for two equal parts, and their horizontal cross-sectional areas are equal and the corresponding central angles are all 60°; the outlet cavity 10 accounts for three equal parts, and the corresponding central angle is 90°; the brine suction and water injection cavity 14 accounts for one equal part, and the corresponding central angle is 30°.

[0042] As Figure 3 and Figure 4 shown in the figure, the bottom of the valve body 1 is provided with a first filter element interface 15, a second filter element interface 16, a third filter element interface 17, and a fourth filter element interface 18. Among them, the second filter element interface 16 and the third filter element interface 17 are located at the central position of the bottom of the valve body 1, and the first filter element interface 15 and the fourth filter element interface 18 are both located radially outside the second filter element interface 16 and the third filter element interface 17. In this embodiment, the first filter element interface 15 and the fourth filter element interface 18 are communicated with each other and are both used to communicate with the tank body; the second filter element interface 16 and the third filter element interface 17 are communicated with each other and are both used to communicate with the central pipe. At the same time, the inlet cavity 9 is communicated with the first filter element interface 15, the outlet cavity 10 is communicated with the second filter element interface 16, the backwash cavity 11 is communicated with the third filter element interface 17, and the flushing cavity 13 is communicated with the fourth filter element interface 18.

[0043] As Figure 5 and Figure 7As shown, the fixed valve plate 19 is located above the second valve cavity and corresponds to the functional area of the second valve cavity. A fixed valve plate center hole 29 is provided at the central position of the fixed valve plate 19. The part of the fixed valve plate 19 outside the fixed valve plate center hole 29 is equally divided into twelve parts in terms of area along the circumferential direction. Along the circumferential direction in the counterclockwise direction, there are arranged a fixed valve plate water inlet hole 21, a fixed valve plate water passing hole 22, a fixed valve plate backwashing hole 25, a fixed valve plate first blind plate 23, a fixed valve plate normal washing hole 26, a fixed valve plate third blind plate 36, and a fixed valve plate second blind plate 24 that are concentric with the central axis and have a sector-shaped ring cross-section. Combining Figure 3 , Figure 4 , Figure 5 and Figure 6 , among which, the fixed valve plate water inlet hole 21 occupies 2 equal parts, and the corresponding central angle is 60°. The fixed valve plate water inlet hole 21 is vertically and correspondingly connected to the water inlet cavity 9 and has the same horizontal cross-sectional area. The fixed valve plate water passing hole 20 occupies 3 equal parts, and the corresponding central angle is 90°. It is vertically and correspondingly connected to the above-mentioned water outlet cavity 10 and has the same horizontal cross-sectional area. The fixed valve plate backwashing hole 25 occupies 2 equal parts, and the corresponding central angle is 60°. It is vertically and correspondingly connected to the backwashing cavity 11 and has the same horizontal cross-sectional area. The fixed valve plate first blind plate 23 occupies 2 equal parts, and the corresponding central angle is 60°. It corresponds to the regeneration water inlet cavity 12 in the up and down direction and has the same horizontal cross-sectional area to completely cover the regeneration water inlet cavity 12. However, a regeneration water inlet hole 27 communicating with the regeneration water inlet cavity 12 is provided on the fixed valve plate first blind plate 23. The regeneration water inlet hole 27 is located at the edge position on the radial side of the fixed valve plate 19. The fixed valve plate normal washing hole 26 occupies 1 equal part, and the corresponding central angle is 30°. It is connected to the normal washing cavity 13 in the up and down direction, and the horizontal cross-section coincides with half of the normal washing cavity 13. The fixed valve plate third blind plate 36 occupies 1 equal part, and the corresponding central angle is 30°. It covers the other half of the horizontal cross-section of the normal washing cavity 13 in the up and down direction. The fixed valve plate second blind plate 24 occupies 1 equal part, and the corresponding central angle is 30°. It covers the salt absorption and water injection cavity 14 in the up and down direction. However, a brine mixing water inlet hole 28 communicating with the salt absorption and water injection cavity 14 is provided on the fixed valve plate second blind plate 24 at the position corresponding to the salt absorption and water injection cavity 14. The brine mixing water inlet hole 28 is located at the radial edge position of the fixed valve plate 19. The brine mixing water inlet hole 28 and the regeneration water inlet hole 27 have the same external shape characteristics and cross-sectional area. Of course, in other embodiments, the external shape characteristics and cross-sectional area of the brine mixing water inlet hole 28 and the regeneration water inlet hole 27 can also be adjusted according to actual needs. The two can have different external shape characteristics or different cross-sectional areas.

[0044] The moving valve plate 20 is coaxially arranged with the fixed valve plate 19, as Figure 8As shown in the figure, the central position of the moving valve plate 20 is the central blind hole 35 of the moving valve plate. The part of the moving valve plate 20 outside the central blind hole 35 of the moving valve plate is equally divided into twelve parts in terms of area along the circumferential direction, and an inlet water through groove 30, a first blind plate 31 of the moving valve plate, a third blind plate 37 of the moving valve plate, a drainage conduction blind hole 34, a second blind plate 32 of the moving valve plate, and an outlet water conduction blind hole 33 are arranged along the circumferential direction counterclockwise and concentrically with the central axis. Among them, the inlet water through groove 30 occupies 2 equal parts, and the corresponding central angle is 60°; the outlet water conduction blind hole 33 occupies 3 equal parts, and the corresponding central angle is 90°. A fourth blind plate 38 of the moving valve plate is arranged in the outlet water conduction blind hole 33 and is correspondingly adapted to cover the salt water mixing inlet hole 28; the drainage conduction blind hole 34 occupies 2 equal parts, and the corresponding central angle is 60°, and is communicated with the central blind hole 35 of the moving valve plate; the first blind plate 31 of the moving valve plate occupies 2 equal parts, and the corresponding central angle is 60°; the second blind plate 32 of the moving valve plate occupies 2 equal parts, and the corresponding central angle is 60°; the third blind plate 37 of the moving valve plate occupies 1 equal part, and the corresponding central angle is 30°.

[0045] In this embodiment, the central angles of the fixed valve plate inlet hole 21, the inlet water through groove 30, the inlet water cavity 9, the backwashing cavity 11, the fixed valve plate backwashing hole 25, the regeneration inlet water cavity 12, the normal washing cavity 13, and the drainage conduction blind hole 34 are all 60°. It should be noted that the central angle here refers to the central angle corresponding to the area where the above-mentioned various structures realize their corresponding functions (water production or backwashing or regeneration or normal washing or salt box water injection) at the functional position.

[0046] When the multifunctional softening valve of the present invention is working, the driving device 6 drives the moving valve plate 20 to rotate. By switching the relative overlapping positions between the various different through holes or blind holes on the moving valve plate 20 and the fixed valve plate 19, processes such as water production, backwashing, regeneration, normal washing, and salt box water injection can be realized.

[0047] As Figure 9 shown, the multifunctional softening valve for water treatment is in the water production state. At this time, the electric water stop valve connected to the water outlet 3 is opened, and the inlet water through groove 30 on the moving valve plate 20 is vertically communicated with the fixed valve plate inlet hole 21 on the fixed valve plate 19. Working process: Raw water enters the first valve cavity 7 from the water inlet 2, then enters the inlet water cavity 9 through the positions of the inlet water through groove 30 and the fixed valve plate inlet hole 21, and then enters the softening water tank body from the first filter element interface 15. After being filtered and softened by the plasma exchange resin, it becomes softened water. The softened water enters the outlet water cavity 10 through the second filter element interface 16 and then directly flows out from the water outlet 3.

[0048] As Figure 10As shown, the multi-functional softening valve for water treatment is in the backwashing state. At this time, the electric water stop valve connected to the water outlet 3 is closed. The position of the moving valve plate 20 rotates counterclockwise by 150° (compared to the water production state). The water inlet through slot 30 on the moving valve plate 20 is vertically connected and overlapped with the backwashing hole 25 of the fixed valve plate on the fixed valve plate 19. Working process: Raw water enters the first valve cavity 7 from the water inlet 2, then enters the backwashing cavity 11 through the water inlet through slot 30 and the backwashing hole 25 of the fixed valve plate, and then enters the lower part of the softening water tank through the third filter element interface 17 via the central pipe. Under the action of the water flow, the broken resin and intercepted dirt pass through the first filter element interface 15, the water inlet cavity 9, and the water inlet hole 21 of the fixed valve plate in sequence, and enter the central drainage cavity 8 along the drainage conduction blind hole 34 and the central blind hole 35 of the moving valve plate, and finally are discharged from the drainage port 4.

[0049] As Figure 11 As shown, the multi-functional softening valve for water treatment is in the regeneration state. At this time, the electric water stop valve connected to the water outlet 3 is closed. The position of the moving valve plate 20 rotates counterclockwise by 210° (compared to the water production state). The water inlet through slot 30 on the moving valve plate 20 is vertically connected with the regeneration water inlet hole 27 on the fixed valve plate 19. The water outlet conduction blind hole 33 on the moving valve plate 20 is connected to the salt water mixing water inlet hole 28 and the normal washing hole 26 of the fixed valve plate. Working process: Raw water enters the first valve cavity 7 from the water inlet 2, then enters the regeneration water inlet cavity 12 through the water inlet through slot 30 and the regeneration water inlet hole 27, flows to the injector inlet, and quickly flows to the injector nozzle outlet, generating negative pressure, so that the salt water in the salt box enters the salt suction and water injection cavity 14 through the salt suction port 5, and then passes through the salt water mixing water inlet hole 28, the water outlet conduction blind hole 33, the normal washing hole 26 of the fixed valve plate, the normal washing cavity 13 and the fourth filter element interface 18 in sequence and enters the softening water tank. After passing through the plasma exchange resin, the salt water passes through the second filter element interface 16, the water outlet cavity 10, and the water passing hole 22 of the fixed valve plate in sequence through the central pipe, and finally enters the central drainage cavity 8 through the drainage conduction blind hole 34 and the central blind hole 35 of the moving valve plate, and finally is discharged from the drainage port 4.

[0050] As Figure 12As shown, the multi-functional softening valve for water treatment is in the normal flushing state. At this time, the electric water stop valve connected to the water outlet 3 is closed, and the position of the moving valve plate 20 rotates counterclockwise by 270° (compared with the water production state). The water inlet through groove 30 on the moving valve plate 20 communicates with the normal flushing hole 26 of the fixed valve plate up and down. Working process: Raw water enters the first valve cavity 7 from the water inlet 2, and then passes through the water inlet through groove 30, the normal flushing hole 26 of the fixed valve plate, and the normal flushing cavity 13, enters the softening water tank through the fourth filter element interface 18, passes the residual brine through the central pipe, and at the same time enters the water outlet cavity 10 and the backwashing cavity 11 from the second filter element interface 16 and the third filter element interface 17 respectively, then enters the drainage conduction blind hole 34 from the water passing hole 22 of the fixed valve plate and the backwashing hole 25 of the fixed valve plate respectively, and enters the central drainage cavity 8 along the central blind hole 35 of the moving valve plate, and finally is discharged from the drainage port 4.

[0051] As Figure 13 As shown, the multi-functional softening valve for water treatment is in the salt tank water injection state. At this time, the electric water stop valve connected to the water outlet 3 is closed, and the position of the moving valve plate 20 rotates counterclockwise by 300° (compared with the water production state). The water inlet through groove 30 on the moving valve plate 20 overlaps and seals with the second blind plate 24 of the fixed valve plate and the third blind plate 36 of the fixed valve plate up and down, and communicates with the brine mixing water inlet hole 28. Working process: Raw water enters the salt absorption and water injection cavity 14 from the water inlet 2 in sequence through the first valve cavity 7, the water inlet through groove 30, and the brine mixing water inlet hole 28, and flows into the salt tank from the salt absorption port 5 to replenish water to the salt tank. In the regeneration state, the brine mixing water inlet hole 28 functions as salt absorption, and in the salt tank water injection state, the brine mixing water inlet hole 28 functions as water injection.

[0052] Compared with the multi-functional softening valve of the prior art, in the multi-functional softening valve for water treatment of the present invention, there is no partition beam in both the water passing holes 22 of the fixed valve plate and the water outlet cavity 10, that is, the horizontal cross-sectional area of the water passing holes 22 of the fixed valve plate is the same as the horizontal cross-sectional area of the water outlet cavity 10. During water production, after the softened water enters the water outlet cavity 10 through the central pipe, it does not need to change the water outlet path through the fixed valve plate 19 anymore, but directly flows out along the water outlet 3 from the water outlet cavity 10. At this time, the planar area where the softened water flows in the water outlet cavity 10 is the horizontal cross-sectional area of the water outlet cavity. In this way, compared with the multi-functional softening valve of the prior art, under the conditions of the same installation size (the size limit of the filter media tank opening) and the same softening capacity (the same amount of softened water output), the main structure of the water passing area of the valve body of the softening valve for water treatment of the present invention can be reduced by at least 40%, and the overall volume of the valve body can be reduced by at least 35%. Of course, in actual production, the wall thickness of the valve body and the production thickness of the upper ring beam on each valve plate can also be reduced, so as to further reduce the volume and weight of the valve body, and finally the main structure of the water passing area of the valve body can be reduced by more than 40%, and the overall volume of the valve body can be reduced by more than 35%. Correspondingly, when the volume of the valve body is reduced, the sizes of other supporting accessories and driving devices of the valve body are also reduced, so that more manufacturing materials can be saved, and the manufacturing cost is greatly reduced.

[0053] In other embodiments, without changing the size and structure of the valve body, a multi-functional softening valve for water treatment with a central angle corresponding to the water inlet hole of the fixed valve plate being 60°, a central angle corresponding to the water passing hole of the fixed valve plate being 90°, and a central angle corresponding to the drainage conduction blind hole being 30° can also be adopted. At this time, the area ratio of the water inlet hole of the fixed valve plate is 1 / 6, the area ratio of the water passing hole of the fixed valve plate is 1 / 4, and the area ratio of the drainage conduction blind hole is 1 / 12.

[0054] Of course, in other embodiments, a multi-functional softening valve for water treatment with a central angle corresponding to the water inlet hole of the fixed valve plate being 60°, a central angle corresponding to the water passing hole of the fixed valve plate being 120°, and a central angle corresponding to the drainage conduction blind hole being 30° or 60° can also be adopted. At this time, the area ratio of the water inlet hole of the fixed valve plate is 1 / 6, the area ratio of the water passing hole of the fixed valve plate is 1 / 3, and the ratio of the drainage conduction blind hole is 1 / 12 or 1 / 6. The valve body structure needs to be adjusted adaptively with the structure of the fixed valve plate.

[0055] In other embodiments, the water outlet cavity and the backwash cavity on the valve body can also be combined into one valve cavity.

[0056] In other embodiments, the fixed valve plate water passage hole and the fixed valve plate backwash hole on the fixed valve plate can also be combined into one hole. At this time, the fixed valve plate water inlet hole can occupy two equal parts, with an area ratio of 1 / 6 and a corresponding central angle of 60°; after the combination of the fixed valve plate water passage hole and the fixed valve plate backwash hole, they occupy five equal parts, with an area ratio of 5 / 12 and a corresponding central angle of 150°; the drain conduction blind hole occupies one or two equal parts, with an area ratio of 1 / 12 or 1 / 6 and a corresponding central angle of 30° or 60°. For the multifunctional softening valve for water treatment, the valve body structure needs to be adjusted adaptively according to the structure of the fixed valve plate.

[0057] The embodiments of the present invention described above do not limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A multifunctional softening valve for water treatment, comprising a valve body, a fixed valve plate fixed on the valve body, and a moving valve plate rotatably assembled on the valve body. The fixed valve plate and the moving valve plate are rotationally and sealingly matched. An inlet, an outlet, a drain port, and a brine suction port are arranged in the radial direction of the valve body. The valve body is also provided with a first filter element interface, a second filter element interface, a third filter element interface, and a fourth filter element interface. It is characterized in that: The outlet is connected with an electric stop valve during use; Inside the valve body, a first valve cavity and a second valve cavity are successively arranged from outside to inside along the radial direction. The second valve cavity includes a central drain cavity and an inlet cavity, an outlet cavity, a backwash cavity, a regeneration inlet cavity, a flushing cavity, and a brine suction and injection cavity that are arranged along the circumferential direction with the central axis outside the central drain cavity of the valve body and have a fan-shaped cross-section; the central drain cavity is communicated with the drain port, the inlet cavity is communicated with the first filter element interface, the outlet cavity is communicated with the second filter element interface, the backwash cavity is communicated with the third filter element interface, and the flushing cavity is communicated with the fourth filter element interface; The fixed valve plate is provided with a fixed valve plate central hole and a fixed valve plate inlet hole, a fixed valve plate water passage hole, a fixed valve plate backwash hole, a first fixed valve plate blind plate, a fixed valve plate flushing hole, a second fixed valve plate blind plate, and a third fixed valve plate blind plate that are arranged along the circumferential direction with the central axis outside the fixed valve plate central hole and have a fan-shaped cross-section. A regeneration inlet hole is opened on the first fixed valve plate blind plate, a brine mixing inlet hole is opened on the second fixed valve plate blind plate, the fixed valve plate central hole is coaxial and communicated with the central drain cavity, and the horizontal cross-sectional area of the fixed valve plate water passage hole is the same as the horizontal cross-sectional area of the outlet cavity; The moving valve plate is coaxially arranged with the fixed valve plate. The moving valve plate is provided with a moving valve plate central blind hole and an inlet through groove, a first moving valve plate blind plate, a drain conduction blind hole, a second moving valve plate blind plate, an outlet conduction blind hole, and a third moving valve plate blind plate that are arranged along the circumferential direction with the central axis outside the moving valve plate central blind hole and have a fan-shaped cross-section. The horizontal cross-sectional area of the inlet through groove is the same as that of the fixed valve plate inlet hole, and the drain conduction blind hole is communicated with the fixed valve plate central blind hole.

2. The multifunctional softening valve for water treatment according to claim 1, characterized in that, The part of the fixed valve plate outside the fixed valve plate central hole is divided into twelve equal parts in area along the circumferential direction. The fixed valve plate inlet hole occupies at least two equal parts, and the fixed valve plate water passage hole occupies at least three equal parts; the part of the moving valve plate outside the moving valve plate central blind hole is divided into twelve equal parts in area along the circumferential direction, and the drain conduction blind hole occupies at least one equal part.

3. The multifunctional softening valve for water treatment according to claim 2, characterized in that The fixed valve plate inlet hole occupies two equal parts, and the corresponding central angle is 60°; the fixed valve plate water passage hole occupies three equal parts, and the corresponding central angle is 90°; the drain conduction blind hole occupies two equal parts, and the corresponding central angle is 60°; the central angles corresponding to the regions where the fixed valve plate inlet hole, the inlet through groove, the inlet cavity, the backwash cavity, the fixed valve plate backwash hole, the regeneration inlet cavity, the flushing cavity, and the drain conduction blind hole realize their corresponding functions at the functional positions are all 60°; the central angles corresponding to the regions where the fixed valve plate water passage hole, the outlet cavity, and the outlet conduction blind hole realize their corresponding functions at the functional positions are all 90°.

4. The multifunctional softening valve for water treatment according to claim 2 or 3, characterized in that The regeneration inlet hole and the brine mixing inlet hole have the same external shape characteristics, and both are arranged at positions close to the edge of the fixed valve plate.

5. The multifunctional softening valve for water treatment according to claim 2, characterized in that, The fixed valve plate inlet hole occupies two equal parts, and the corresponding central angle is 60°; the fixed valve plate water passage hole occupies three equal parts, and the corresponding central angle is 90°; the drain conduction blind hole occupies one equal part, and the corresponding central angle is 30°.

6. The multifunctional softening valve for water treatment according to claim 2, wherein The water inlet holes of the fixed valve plate are divided into two equal parts, and the corresponding central angle is 60°; the water passing holes of the fixed valve plate are divided into four equal parts, and the corresponding central angle is 120°; the drainage conduction blind holes are divided into one equal part, and the corresponding central angle is 30°, or the drainage conduction blind holes are divided into two equal parts, and the corresponding central angle is 60°.

7. The multifunctional softening valve for water treatment according to claim 2, characterized in that, The water inlet holes of the fixed valve plate are divided into two equal parts, and the corresponding central angle is 60°; the water passing holes of the fixed valve plate and the backwashing holes of the fixed valve plate are combined into one hole, which is divided into five equal parts, and the corresponding central angle is 150°; the drainage conduction blind holes are divided into one equal part, and the corresponding central angle is 30°, or the drainage conduction blind holes are divided into two equal parts, and the corresponding central angle is 60°.

8. The multifunctional softening valve for water treatment according to any one of claims 1-3, characterized in that, The valve body is integrally injection molded.

9. The multifunctional softening valve for water treatment according to any one of claims 1-3, characterized in that, The water outlet cavity and the backwashing cavity are combined into one valve cavity.

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