Double-valve-body softened water treatment equipment

Abstract

The utility model belongs to the technical field of water treatment equipment, and relates to double-valve-body softened water treatment equipment which comprises a first valve body part and a second valve body part, and the first valve body part comprises a first valve body, a communicating pipe and a movable valve plate; a first valve outer cavity and a first valve inner cavity which are coaxial and separated from each other are formed in the first valve body. The first valve inner cavity comprises a drainage cavity which is coaxial and separated from each other, a first cavity, a second cavity, a third cavity and a fourth cavity, wherein the first cavity, the second cavity, the third cavity and the fourth cavity are evenly distributed around the circumference of the drainage cavity, and the corresponding central angles of the first cavity, the second cavity, the third cavity and the fourth cavity are 90 degrees. The movable valve plate is provided with a central drainage groove, a water inlet through hole, a first groove, a second groove and a third groove, a salt suction opening is formed in the communicating pipe, and a first channel, a second channel, a third channel and a fourth channel which are separated from one another are arranged in the communicating pipe. The device has the characteristics of simple structure, small size, excellent water passing performance and high water treatment efficiency.

Description

Technical Field

[0001] The invention belongs to the field of water treatment equipment, and in particular relates to double-valve body softening water treatment equipment. Background Art

[0002] Multifunctional control valves are often used in today's industrial or civil water treatment systems, especially in the field of softened water treatment. Multifunctional softening valves have been widely used to switch water flow channels to achieve functions such as water production, backwashing, salt absorption / slow washing, water replenishment to the salt box, and forward washing.

[0003] Existing softening water treatment equipment, such as a Chinese patent application with application publication number CN115183023A, discloses a high-efficiency double-valve body softening valve, which includes a valve body and an inlet and outlet water unit and a regeneration unit arranged in the valve body, wherein the valve body has a first valve chamber and a second valve chamber that are interconnected, the inlet and outlet water unit includes a first static valve plate and a first movable valve plate, and the regeneration unit includes a second movable valve plate and a second static valve plate; it can be seen from the disclosed valve body structure that when raw water enters the first valve chamber from the water inlet, it will enter the second valve chamber along the connecting port between the first valve chamber and the second valve chamber. In order to ensure the normal operation of the inlet and outlet water unit, it is necessary to set a corresponding blind plate on the second static valve plate for blocking; and in order to ensure that the regeneration unit realizes the positive washing function, it is necessary to open a through hole on the blind plate, and correspondingly, it is necessary to provide a blocking block for blocking the above-mentioned through hole at the water inlet notch of the second movable valve plate, so that the waste water can enter the corresponding sewage discharge chamber along the through hole from the fan-shaped groove on the second movable valve plate.

[0004] Although the number of cavities in the second valve cavity is small, the blocking block occupies part of the water flow area of ​​the water inlet gap, so that the effective water flow area of ​​the regeneration unit cannot be maximized; and the blind plate and through hole on the second static valve plate make the effective water flow area of ​​sewage discharge during backwashing small, so that the excellent water flow performance and structural simplicity of the entire softening valve cannot be achieved at the same time. In addition, when the regeneration unit is working, an electric valve needs to be connected to the water outlet, which increases the cost of use. Summary of the invention

[0005] The present invention provides a double-valve body softening water treatment device to solve the technical problem that when the softening water treatment device in the prior art realizes the corresponding function, the effective area for water flow is small due to too many chambers in the valve body, thereby affecting the water treatment efficiency.

[0006] In order to solve the above problems, the double valve body softening water treatment equipment provided by the present invention adopts the following technical solutions:

[0007] A double-valve body softening water treatment device, comprising a first valve body part, a second valve body part and a connecting pipe connected together; the first valve body part comprises a first valve body and a movable valve plate, the first valve body is provided with a drain port and a first connecting port connected to the second valve body part, the first valve body comprises a first valve outer cavity and a first valve inner cavity which are coaxial and mutually separated, the first valve inner cavity comprises a coaxial and mutually separated drainage chamber and a first chamber, a second chamber, a third chamber and a fourth chamber which are uniformly distributed around the circumference of the drainage chamber and have corresponding central angles of 90°; the drainage chamber is connected to the drain port through a drainage pipe;

[0008] The movable valve disc is rotatably sealed and assembled above the first valve inner cavity. The movable valve disc is provided with a central drainage groove and corresponding water inlet through holes, a first groove, a second groove and a third groove, which are uniformly distributed in the circumferential direction of the central drainage groove and have a central angle of 90°, and the second groove is connected to the central drainage groove. The second groove and the water inlet through hole are symmetrical about the center of the central drainage groove.

[0009] The connecting pipe is located below the first valve body, is provided with a salt intake port, and has a first channel, a second channel, a third channel, a fourth channel separated from each other, and a connecting cavity for connecting the second channel with the fourth channel; the first channel is connected with both the first chamber and the second chamber, the second channel is connected with the third chamber, the fourth channel is connected with the fourth chamber and the salt intake port, and an ejector with a check valve at the inlet is provided in the fourth channel; the second valve body portion is used to seal and unseal the water in the first valve body portion, when sealing, the second valve body portion enters a softening water mode, and when unsealing, the first valve body portion enters a cleaning mode.

[0010] The beneficial effects of the present invention are as follows: the present invention can seal and unseal the water in the first valve body portion through the second valve body portion. On the one hand, there is no need to connect an additional valve to the second valve body portion, saving the cost of the valve; on the other hand, there is no need to set a sealing structure above the corresponding chamber in the inner cavity of the first valve and at the water inlet through hole of the first movable valve plate. When the water in the first valve body portion is unsealed, the water can pass through the corresponding chamber and the water inlet through hole in its entirety, and the cleaned waste water can also pass through the corresponding chamber and the second groove in its entirety and flow to the drain outlet. Compared with the existing softening water treatment equipment, under the condition of simple structure, the water passing performance of the present invention is greatly improved, the water treatment efficiency is higher, and the volume is smaller.

[0011] Furthermore, a first static valve plate is coaxially and sealably assembled above the first valve inner cavity, and a first movable valve plate is located above the first static valve plate and sealably assembled with the first static valve plate; the first static valve plate is provided with a coaxial and mutually spaced central through hole and a first through hole, a second through hole, a third through hole and a fourth through hole uniformly distributed in a circumferential direction around the central through hole, the central through hole corresponds to and is connected with the drainage chamber up and down, the first through hole corresponds to and is connected with the first chamber up and down, the second through hole corresponds to and is connected with the second chamber up and down, the third through hole corresponds to and is connected with the third chamber up and down, and the fourth through hole corresponds to and is connected with the fourth chamber up and down; the horizontal cross-sectional areas of the first through hole, the second through hole, the third through hole and the fourth through hole are equal and the corresponding central angles are all 90°.

[0012] Beneficial effects: the first movable valve plate can be lubricated, the wear of the first movable valve plate can be reduced, and the service life can be increased.

[0013] Further, the drain pipe passes through the first chamber and the second chamber at the same time, and the portion of the drain pipe passing through the first chamber and the portion of the drain pipe passing through the second chamber are symmetrically arranged with respect to the partition between the first chamber and the second chamber.

[0014] Beneficial effect: The structure of the first valve body is more stable.

[0015] Furthermore, the second valve body portion includes a second valve body, which is provided with a water inlet, a water outlet, a first interface and a second interface for connecting to a softening tank, and a rotatable movable valve cylinder is provided in the second valve body; the movable valve cylinder is used to realize the opening and closing of the water path between the water inlet and the water outlet, the opening and closing of the water path between the fourth channel and the first interface, and the opening and closing of the water path between the first channel and the second interface during its rotation stroke.

[0016] Furthermore, the second valve body is provided with a second valve outer cavity and a second valve inner cavity which is coaxial and supported in the valve outer cavity at intervals, the second valve outer cavity is provided with a second connecting port which penetrates mutually with the first connecting port, the second valve outer cavity is communicated with the water inlet, the cavity wall of the second valve inner cavity is provided with a first valve body water passing hole which is communicated with the second valve outer cavity respectively and a second valve body water passing hole which is communicated with the water outlet; the cavity wall of the second valve inner cavity and the cavity wall of the second valve outer cavity are penetrated with a first water passing port and a second water passing port which are separated in position at the connecting part thereof, the first water passing port is communicated with the first channel, and the second water passing port is communicated with the fourth channel; the movable valve cylinder is located in the second valve inner cavity, and comprises a large-diameter cylinder section and a small-diameter cylinder section which is coaxial and supported in the large-diameter cylinder section at intervals, the axial length of the large-diameter cylinder section is greater than the axial length of the small-diameter cylinder section, and the top of the large-diameter cylinder section is blocked; an annular water passing channel is formed between the large-diameter cylinder section and the small-diameter cylinder section, the cylinder wall of the large-diameter cylinder section is provided with a first valve cylinder water passing hole , a water through hole and a water through gap of the second valve cylinder, the water through hole of the first valve cylinder is located above the small-diameter cylinder section, and the water through hole and the water through gap of the second valve cylinder are both connected to the water through channel; the first interface is coaxially arranged with the second interface, the first interface is used to connect with the tank body of the softening tank, and the second interface is used to connect with the central tube in the softening tank, an inner cylinder is coaxially supported in the first interface, and the lower port of the inner cylinder forms the second interface, and the inner cylinder and the internal space of the moving valve cylinder are connected up and down; the moving valve cylinder has a first position and a second position in its rotation stroke, when the moving valve cylinder is in the first position, the water through hole of the first valve cylinder and the water through hole of the second valve body are both connected to the water outlet, the large-diameter cylinder section blocks the first water through hole and the second water through hole, and the water inlet is connected to the water through hole of the first valve body and the water through channel; when the moving valve cylinder is in the second position, the large-diameter cylinder section blocks the water through hole of the first valve body and the second water through hole of the valve body, the water through hole of the first valve cylinder is connected to the first channel, and the water through hole of the second valve cylinder is connected to the fourth channel.

[0017] Beneficial effect: In the axial direction of the movable valve cylinder, the space between the second interface and the small diameter cylinder section is not blocked by objects, and the water entering the second interface from the central tube can completely enter the small diameter cylinder section of the movable valve cylinder, so that the effective use area of ​​the second interface is maximized. Compared with the existing water treatment softening valve, under the same horizontal cross-sectional area of ​​the second interface, the water output of the present invention can be maximized, and the water treatment efficiency is improved; and by using the rotation of the movable valve cylinder itself, the equipment can be switched between the working and cleaning states, and there is no need to set a valve at the water outlet, which is lower in cost.

[0018] Furthermore, a second annular static valve plate is provided on the top of the inner cylinder, the second static valve plate is adapted to the small-diameter cylinder section, and the small-diameter cylinder section and the second static valve plate are rotatably sealed.

[0019] Beneficial effects: Lubricates the moving valve cylinder, reduces wear on the moving valve cylinder, and increases service life.

[0020] Furthermore, a salt box water supply pipe is connected to the through portion of the first connecting port and the second connecting port, and a valve is connected to the salt box water supply pipe.

[0021] Beneficial effect: Water can be directly injected into the salt box from the salt box water supply pipe to realize the salt box water supply function, and there is no need to inject water from the water inlet, which saves the water flow path and saves the salt box water supply time.

[0022] Furthermore, a circle of supporting flange is formed on the inner cylinder wall of the large diameter cylinder section, and the small diameter cylinder section is coaxially connected below the supporting flange. The shape of the water-passing gap matches the outer shape of the large diameter cylinder section, and the water-passing gap extends from the bottom end of the supporting flange to the bottom end of the small diameter cylinder section in the axial direction of the large diameter cylinder section.

[0023] Furthermore, the lower end surface of the small-diameter cylinder section is flush with the lower end surface of the large-diameter cylinder section.

[0024] Furthermore, the first valve body, the second valve body and the connecting pipe are integrally injection molded. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0026] Figure 1 It is a schematic diagram of the appearance of the double-valve body softening water treatment equipment of the present invention;

[0027] Figure 2 for Figure 1 Schematic diagram after removing the outer shell;

[0028] Figure 3 A structural top view showing a first valve body, a second valve body and a connecting pipe in a double-valve body softening water treatment device of the present invention;

[0029] Figure 4 for Figure 3 Section Figure 1 ;

[0030] Figure 5 for Figure 3 Section Figure 2 ;

[0031] Figure 6 for Figure 3 Section Figure 3 ;

[0032] Figure 7 for Figure 3 A cross-sectional view after the first static valve plate and the second static valve plate are installed;

[0033] Figure 8 is a schematic structural diagram of the first static valve plate;

[0034] Fig. 9 It is a structural schematic diagram of the moving valve plate;

[0035] Fig.10 It is a structural schematic diagram of the moving valve cylinder;

[0036] Fig.11 is a cross-sectional view of the movable valve cylinder when it is in the first position;

[0037] Fig.12 is a cross-sectional view of the movable valve cylinder when it is in the second position;

[0038] Fig.13 It is a cross-sectional view of the double-valve body softening water treatment equipment of the present invention when it is in a backwash state;

[0039] Fig.14 It is a cross-sectional view of the double-valve body softening water treatment equipment of the present invention in a regeneration state;

[0040] Fig.15 It is a cross-sectional view of the double-valve body softening water treatment equipment of the present invention in a forward washing state.

[0041] Description of reference numerals:

[0042] 1. First valve body; 2. Second valve body; 3. Connecting pipe; 4. Water inlet; 5. Water outlet; 6. Drainage outlet; 7. Salt box water supply pipe; 8. Salt intake port; 9. First connecting port; 10. Second connecting port; 11. First valve outer cavity; 12. Drainage chamber; 13. First chamber; 14. Second chamber; 15. Third chamber; 16. Fourth chamber; 17. Moving valve plate; 18. First static valve plate; 19. Water inlet through hole; 20. Central drainage groove; 21. Second groove; 22. First groove; 23. Third groove; 24. First channel; 25. Second channel; 26. Third channel; 27. Fourth channel; 28. Ejector; 29. ​​First through hole; 30. Second through hole ; 31. The third through hole; 32. The fourth through hole; 33. The drain pipe; 34. The connecting cavity; 35. The moving valve cylinder; 351. The large-diameter cylinder section; 352. The small-diameter cylinder section; 353. The water-passing gap; 354. The water-passing hole of the first valve cylinder; 355. The water-passing hole of the second valve cylinder; 356. The water-passing channel; 36. The first driving device; 37. The second driving device; 38. The second static valve plate; 39. The second valve inner cavity; 40. The second valve outer cavity; 41. The water-passing hole of the first valve body; 42. The water-passing hole of the second valve body; 43. The first water outlet; 44. The second water outlet; 45. The supporting flange; 46. The first interface; 47. The second interface; 48. The supporting part; 49. The central through hole; 50. The top cover. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0044] Embodiment 1 of the double valve body softening water treatment equipment of the present invention:

[0045] like Figure 1 and Figure 2 As shown, the double valve body softening water treatment equipment comprises a first valve body part and a second valve body part connected together, wherein the first valve body part comprises a first valve body 1, a connecting pipe 3, a first static valve plate 18 and a moving valve plate 17. The first valve body 1 is provided with a drain port 6 and a first connecting port 9 connected with the second valve body part.

[0046] Specifically, Figure 3 As shown, the first valve body 1 adopts a quarter-grid structure, which has a first valve outer cavity 11 and a first valve inner cavity that are coaxial and mutually separated, and the first valve inner cavity includes a coaxial and mutually separated drainage chamber 12 and a first chamber 13, a second chamber 14, a third chamber 15 and a fourth chamber 16 that are evenly distributed around the circumference of the drainage chamber 12, and the horizontal sections of the first chamber 13, the second chamber 14, the third chamber 15 and the fourth chamber 16 are all fan-shaped, and the corresponding central angles are all 90°. The above-mentioned quarter-grid structure means that the space outside the drainage chamber 12 of the first valve inner cavity is divided into four equal parts, which are divided into four chambers with the same horizontal cross-sectional area and angle, namely the above-mentioned first chamber 13, the second chamber 14, the third chamber 15 and the fourth chamber 16. The drain chamber 12 is connected to the drain outlet 6 via a drain pipe 33, which passes through the first valve outer chamber 11, the first chamber 13, the second chamber 14 and the drain chamber 12 at the same time. The portion of the drain pipe 33 passing through the first chamber 13 and the portion of the drain pipe 33 passing through the second chamber 14 are symmetrically arranged about the partition between the first chamber 13 and the second chamber 14.

[0047] like Figure 8 As shown, the first static valve plate 18 is provided with a coaxial and mutually spaced central through hole 49 and a first through hole 29, a second through hole 30, a third through hole 31 and a fourth through hole 32 uniformly distributed in the circumferential direction around the central through hole 49. The horizontal cross-sections of the first through hole 29, the second through hole 30, the third through hole 31 and the fourth through hole 32 are all fan rings with equal areas, and the corresponding central angles are all 90°, as shown in FIG. Figure 7As shown, the first static valve plate 18 is sleeved and fixed above the first valve inner cavity through the central through hole 49. The central through hole 49 corresponds to and communicates with the drainage chamber 12, the first through hole 29 corresponds to and communicates with the first chamber 13, the second through hole 30 corresponds to and communicates with the second chamber 14, the third through hole 31 corresponds to and communicates with the third chamber 15, and the fourth through hole 32 corresponds to and communicates with the fourth chamber 16.

[0048] The movable valve plate 17 is located above the first static valve plate 18 and is in sealing cooperation with the first static valve plate 18. Fig. 9 As shown, the movable valve plate 17 is provided with a central drainage groove 20 and water inlet holes 19, a first groove 22, a second groove 21 and a third groove 23 uniformly distributed in the circumferential direction around the central drainage groove 20. The horizontal cross-sections of the water inlet holes 19, the first groove 22, the second groove 21 and the third groove 23 are all fan rings with equal areas, and the corresponding central angles are all 90°. Among them, the second groove 21 is connected to the central drainage groove 20, the second groove 21 and the water inlet hole 19 are symmetrical about the center of the central drainage groove 20, and the first groove 22 and the third groove 23 are symmetrical about the center of the central drainage groove 20. The first groove 22, the second groove 21 and the third groove 23 can block the first chamber 13, the second chamber 14, the third chamber 15 and the fourth chamber 16.

[0049] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the connecting pipe 3 has a first channel 24, a second channel 25, a third channel 26, a fourth channel 27 separated from each other, and a connecting cavity 34 connecting the second channel 25 with the fourth channel 27. Among them, the third channel 26 is a closed cavity with both ends blocked; the first channel 24 is connected with the first chamber 13 and the second chamber 14 up and down. The bottom end of the third chamber 15 is blocked, and the side is connected with the second channel 25 through an opening, and the fourth channel 27 is connected with the fourth chamber 16 up and down. The connecting pipe 3 is provided with a salt suction port 8, which is connected with the fourth channel 27.

[0050] like Figure 7 As shown, an ejector 28 is provided in the fourth channel 27 , and the ejector 28 is communicated with the salt intake port 8 , and check valves are provided at the inlet of the ejector 28 and the salt intake port 8 .

[0051] It should be noted that there are many structures that can be adopted for the second valve body, but no matter which structure is adopted, the second valve body should include a second valve body 2, which is provided with a water inlet 4, a water outlet 5, a first interface 46 and a second interface 47 for connecting to a softening tank, and a rotatable movable valve cylinder 35. The movable valve cylinder 35 is used to realize the opening and closing of the water path between the water inlet 4 and the water outlet 5, the opening and closing of the water path between the fourth channel 27 and the first interface 46, and the opening and closing of the water path between the first channel 24 and the second interface 47 during its rotation stroke. In practice, the structure of the second valve body determines whether the overall installation method is side-mounted or top-mounted. In this embodiment, the top-mounted method is used as an example for description. The following is a more specific second valve body description.

[0052] In this embodiment, Figure 2 As shown, the movable valve plate 17 and the movable valve cylinder 35 are driven to rotate by the first driving device 36 and the second driving device 37 respectively. The first driving device 36 and the second driving device 37 are both existing technologies and will not be described in detail here.

[0053] like Figure 3 and Figure 4 As shown, the second valve body 2 has a coaxial and mutually separated second valve outer cavity 40 and a second valve inner cavity 39, and the second valve outer cavity 40 is connected to the water inlet 4. The cavity wall of the second valve inner cavity 39 is provided with a first valve body water hole 41 connected to the second valve outer cavity 40, and a second valve body water hole 42 connected to the water outlet 5. The cavity wall of the second valve inner cavity 39 and the cavity wall of the second valve outer cavity 40 are penetrated with a first water port 43 and a second water port 44 separated by position at the connection part between the two, and the first water port 43 is located above the second water port 44, but is staggered. The first water port 43 is connected to the first channel 24, and the second water port 44 is connected to the fourth channel 27. The second valve outer cavity 40 is provided with a second connecting port 10 located above the second valve inner cavity 39 on the cavity wall. The second connecting port 10 and the first connecting port 9 are mutually connected. A salt box water supply pipe 7 is connected at the connection point between the two. The salt box water supply pipe 7 and the drain port 6 are located on the same side of the first valve body. The salt box water supply pipe 7 can be used to replenish the salt box, but it is blocked during soft water production and cleaning, and can be opened and closed by an external valve. Of course, the salt box water supply pipe 7 can also be omitted, and water can be directly supplied to the salt box through the water inlet 4 to replenish the salt box.

[0054] The movable valve cylinder 35 is located in the second valve inner cavity 39. Fig.10 and Fig.11As shown, it includes a large diameter barrel section 351 and a small diameter barrel section 352. A ring-shaped support flange 45 is integrally formed on the inner barrel wall of the large diameter barrel section 351. The outer diameter of the support flange 45 is equal to the inner diameter of the large diameter barrel section 351. The small diameter barrel section 352 is coaxially connected to the inner side of the support flange 45. The inner diameter of the small diameter barrel section 352 is the same as the inner diameter of the support flange 45. The axial length of the large diameter barrel section 351 is greater than the axial length of the small diameter barrel section 352. Figure 3 As shown, the top of the large diameter cylinder section 351 is blocked by the top cover 50, and the lower end surface of the small diameter cylinder section 352 is flush with the lower end surface of the large diameter cylinder section 351. An annular water passage 356 is formed between the large diameter cylinder section 351 and the small diameter cylinder section 352, and the cylinder wall of the large diameter cylinder section 351 is provided with a first valve cylinder water passage hole 354, a second valve cylinder water passage hole 355 and a water passage gap 353. The first valve cylinder water passage hole 354 and the second valve cylinder water passage hole 355 are both located on the same side of the large diameter cylinder section 351, the first valve cylinder water passage hole 354 is located above the small diameter cylinder section 352, and the second valve cylinder water passage hole 355 and the water passage gap 353 are both connected to the water passage 356. The shape of the water-passing notch 353 matches the outer shape of the large-diameter cylinder section 351 , and the water-passing notch 353 extends from the bottom end of the supporting flange 45 to the bottom end of the small-diameter cylinder section 352 in the axial direction of the large-diameter cylinder section 351 .

[0055] The first interface 46 is sealed and connected to the tank body of the softening tank, and communicates with the water passage 356; the second interface 47 is sealed and connected to the central tube in the softening tank. An inner cylinder is coaxially supported by an integral support portion 48 in the first interface 46. The support portion 48 is used to support the inner cylinder, and will occupy a smaller part of the effective water passing area of ​​the first interface 46. The lower end of the inner cylinder forms the second interface 47, and water flows directly up and down between the inner cylinder and the central tube without structural obstruction.

[0056] like Fig.12 As shown, the second static valve disc 38 is annular and fixed on the top of the inner cylinder. It mainly plays a role in lubricating the movable valve cylinder 35. The inner diameter of the second static valve disc 38 is equal to the inner diameter of the small diameter cylinder section 352 and the inner diameter of the inner cylinder. The outer diameter of the second static valve disc 38 is equal to the outer diameter of the small diameter cylinder section 352. The movable valve cylinder 35 is in rotational sealing cooperation with the second static valve disc 38 through the small diameter cylinder section 352, and in rotational sealing cooperation with the second valve inner cavity 39 through the large diameter cylinder section 351. The inner cylinder and the inner space of the movable valve cylinder 35 are connected from top to bottom. Water flowing from the center tube into the movable valve cylinder 35 or water flowing from the movable valve cylinder 35 into the center tube will pass through the full area of ​​the second interface 47.

[0057] The movable valve cylinder 35 has a first position and a second position in its rotation stroke. When the movable valve cylinder 35 is in the first position, the water in the first valve body 1 is blocked. Fig.11As shown, at this time, the first valve cylinder water hole 354 and the second valve body water hole 42 are both connected to the water outlet 5, the large diameter cylinder section 351 blocks the first water outlet 43 and the second water outlet 44, and the water inlet 4 is connected to the first valve body water hole 41 and the water passage 356. At this time, the entire softening water equipment is in a state of making soft water. Raw water flows in from the water inlet 4, enters the water passage 356 along the first valve body water hole 41, and flows into the softening tank from the first interface 46. After the raw water is softened in the softening tank, it flows out from the central tube, flows into the small diameter cylinder section 352 and the large diameter cylinder section 351 in turn along the second interface 47, and finally flows out from the first valve cylinder water hole 354 and the second valve body water hole 42 to the water outlet 5.

[0058] When the movable valve cylinder 35 rotates 90° counterclockwise or 270° clockwise, the movable valve cylinder 35 is in the second position. Fig.12 As shown, at this time, the first valve body 1 enters the cleaning mode, and the large diameter cylinder section 351 blocks the first valve body water hole 41 and the second valve body water hole 42, the first valve cylinder water hole 354 is connected to the first water port 43, and the second valve cylinder water hole 355 is connected to the second water port 44.

[0059] like Fig.13 As shown, the movable valve plate 17 is located in the backwash position. At this time, the water inlet hole 19 corresponds to and is connected with the second chamber 14, the second groove 21 corresponds to the fourth chamber 16, the first groove 22 blocks the third chamber 15, and the third groove 23 blocks the first chamber 13. At this time, the raw water enters the second valve outer cavity 40 from the water inlet 4, enters the first valve outer cavity 11 along the second connecting port 10 and the first connecting port 9, and flows into the second chamber 14 from the water inlet hole 19, flows into the first channel 24 from the second chamber 14, and flows into the central tube along the first water outlet 43, the first valve cylinder water hole 354 and the second interface 47 in sequence; flows into the softening tank body from the central tube to flush the resin, and the flushed waste water enters the fourth channel 27 along the softening tank body, the first interface 46, the water channel 356, the second valve cylinder water hole 355 and the second water outlet 44 in sequence. Since there are check valves at the ejector 28 and the salt absorption port 8, the waste water is blocked, and the waste water can only enter the fourth chamber 16 from the fourth channel 27, and enter the drainage chamber 12 along the second groove 21, and finally discharged from the drainage port 6.

[0060] After the movable valve plate 17 rotates 90° counterclockwise from the backwash position, it is in the regeneration position. Fig.14As shown; at this time, the water inlet hole 19 corresponds to and is connected with the third chamber 15 up and down, the first groove 22 blocks the forward wash chamber, the third groove 23 blocks the backwash chamber, and the second groove 21 rotates to a position corresponding to the first chamber 13 up and down. The raw water enters the second valve outer cavity 40 from the water inlet 4, enters the first valve outer cavity 11 along the second connecting port 10 and the first connecting port 9, and flows into the third chamber 15 from the water inlet through hole 19, flows into the second channel 25 from the third chamber 15, and flows to the ejector 28 through the connecting cavity 34. At this time, the water pressure opens the check valve at the ejector 28, and absorbs salt from the salt absorption port 8. The absorbed salt water and the raw water flow into the fourth channel 27 together, and successively enter the softening tank along the second water port 44, the second valve cylinder water hole 355, the water channel 356 and the first interface 46. After the resin is regenerated and cleaned, the cleaned waste water enters the first channel 24 along the central tube, the second interface 47, the movable valve cylinder 35, the first valve cylinder water hole 354 and the first water port 43 in turn, and enters the first chamber 13 from the first channel 24, and enters the drainage chamber 12 along the second groove 21, and is finally discharged from the drainage port 6.

[0061] After the movable valve plate 17 rotates 90° counterclockwise from the regeneration position, it is in the forward washing position. Fig.15 As shown; at this time, the water inlet through hole 19 corresponds to and is connected with the fourth chamber 16, the second groove 21 corresponds to the second chamber 14, the first groove 22 blocks the first chamber 13, and the third groove 23 blocks the third chamber 15. The raw water enters the second valve outer cavity 40 from the water inlet 4, enters the first valve outer cavity 11 along the second connecting port 10 and the first connecting port 9, and flows into the fourth chamber 16 from the water inlet hole 19, and flows into the fourth channel 27 from the fourth chamber 16. Under the action of the check valve on the ejector 28, the water will not flow back into the second channel 25, but enters the softening tank body along the second water outlet 44, the second valve cylinder water hole 355, the water channel 356 and the first interface 46 in sequence to wash the resin. The cleaned waste water enters the first channel 24 along the central tube, the second interface 47, the movable valve cylinder 35, the first valve cylinder water hole 354 and the first water outlet 43 in sequence, and enters the second chamber 14 from the first channel 24, enters the drainage chamber 12 along the second groove 21, and is finally discharged from the drainage port 6.

[0062] Of course, it should be noted that the structure of the second valve body is not limited to the above structure, and any second valve body that can soften water and block the water in the first valve body belongs to the protection scope of the present invention. For example, in other embodiments, the whole adopts a side-mounted manner, in which case the first interface 46 is connected to the upper water inlet 4 of the softening tank, and the second interface 47 is connected to the lower water outlet 5 of the softening tank.

[0063] The present invention can achieve the blocking of water in the first valve body by using the movable valve cylinder 35 itself, without the need to connect an external valve at the water outlet 5. At the same time, when the first valve body 1 is in the cleaning mode, water can pass through the water inlet through hole 19 and the second groove 21 on the movable valve plate 17 and each chamber of the first valve inner cavity in the entire area, and the water flow rate is larger. The present invention can take into account both excellent water flow performance and simple valve body structure. Compared with the existing double valve body softening valve, under the condition of the same water flow rate, the present invention has a smaller volume and lower cost.

[0064] Embodiment 2 of the double valve body softening water treatment equipment provided by the present invention:

[0065] The main difference between this embodiment and the first embodiment is that in the first embodiment, the first static valve plate is provided to lubricate the first movable valve plate. In this embodiment, the first static valve plate is not provided, and lubrication is achieved by applying lubricating material on the surface of the first movable valve plate and the top surface of the first valve inner cavity.

[0066] Embodiment 3 of the double valve body softening water treatment equipment provided by the present invention:

[0067] The difference between this embodiment and the first embodiment is that in the first embodiment, the drain pipe passes through the first chamber and the second chamber at the same time, and the portion of the drain pipe passing through the first chamber and the portion of the drain pipe passing through the second chamber are arranged symmetrically with respect to the partition between the first chamber and the second chamber. In this embodiment, the drain pipe only passes through the first chamber. Of course, in other embodiments, the drain pipe may also only pass through the second chamber.

[0068] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Double valve body softening water treatment equipment, characterized in that: including a first valve body portion and a second valve body portion connected together; The first valve body portion includes a first valve body, a connecting pipe and a movable valve plate, the first valve body is provided with a drain port and a first connecting port connected with the second valve body portion, the first valve body has a first valve outer cavity and a first valve inner cavity which are coaxial and separated from each other, the first valve inner cavity includes a coaxial and separated drainage chamber and a first chamber, a second chamber, a third chamber and a fourth chamber which are uniformly distributed around the circumference of the drainage chamber and have corresponding central angles of 90°; the drainage chamber is connected with the drain port through a drain pipe; The movable valve disc is rotatably sealed and assembled above the first valve inner cavity. The movable valve disc is provided with a central drainage groove and corresponding water inlet through holes, a first groove, a second groove and a third groove, which are uniformly distributed in the circumferential direction of the central drainage groove and have a central angle of 90°, and the second groove is connected to the central drainage groove. The second groove and the water inlet through hole are symmetrical about the center of the central drainage groove. The connecting pipe is located below the first valve body, is provided with a salt absorption port, and has a first channel, a second channel, a third channel, a fourth channel separated from each other, and a connecting cavity for connecting the second channel with the fourth channel; the first channel is connected with both the first chamber and the second chamber, the second channel is connected with the third chamber, the fourth channel is connected with the fourth chamber and the salt absorption port, and an ejector with a check valve at the inlet is provided in the fourth channel; The second valve body is used to seal and unseal the water in the first valve body. When sealing, the second valve body enters a softening water mode, and when unsealing, the first valve body enters a cleaning mode.

2. The double valve body softening water treatment equipment according to claim 1, characterized in that: A first static valve plate is coaxially and sealably assembled above the first valve inner cavity, and a first movable valve plate is located above the first static valve plate and is sealably assembled with the first static valve plate; the first static valve plate is provided with a coaxial and mutually spaced central through hole and a first through hole, a second through hole, a third through hole and a fourth through hole uniformly distributed in a circumferential direction around the central through hole, the central through hole corresponds to and is connected with the drainage chamber up and down, the first through hole corresponds to and is connected with the first chamber up and down, the second through hole corresponds to and is connected with the second chamber up and down, the third through hole corresponds to and is connected with the third chamber up and down, and the fourth through hole corresponds to and is connected with the fourth chamber up and down; the horizontal cross-sectional areas of the first through hole, the second through hole, the third through hole and the fourth through hole are equal and the corresponding central angles are all 90°.

3. The double valve body softening water treatment equipment according to claim 1, characterized in that: The drain pipe passes through the first chamber and the second chamber at the same time, and a portion of the drain pipe passing through the first chamber and a portion of the drain pipe passing through the second chamber are symmetrically arranged with respect to a partition portion between the first chamber and the second chamber.

4. The double valve body softening water treatment equipment according to any one of claims 1 to 3, characterized in that: The second valve body portion includes a second valve body, which is provided with a water inlet, a water outlet, a first interface and a second interface for connecting to a softening tank, and a rotatable movable valve cylinder is provided in the second valve body; the movable valve cylinder is used to realize the opening and closing of the water path between the water inlet and the water outlet, the opening and closing of the water path between the fourth channel and the first interface, and the opening and closing of the water path between the first channel and the second interface during its rotation stroke.

5. The double valve body softening water treatment equipment according to claim 4, characterized in that: The second valve body is provided with a second valve outer cavity and a second valve inner cavity coaxially and supported in the valve outer cavity at intervals. The second valve outer cavity is provided with a second communication port which mutually penetrates with the first communication port. The second valve outer cavity is communicated with the water inlet. The cavity wall of the second valve inner cavity is provided with a first valve body water through hole which is communicated with the second valve outer cavity and a second valve body water through hole which is communicated with the water outlet respectively. The cavity wall of the second valve inner cavity and the cavity wall of the second valve outer cavity are penetrated with a first water through hole and a second water through hole which are separated in position at the connection part between the two. The first water through hole is connected with the first channel. The second water outlet is connected with the fourth channel; the movable valve cylinder is located in the second valve inner cavity, including a large diameter cylinder section and a small diameter cylinder section coaxially and supported in the large diameter cylinder section at intervals, the axial length of the large diameter cylinder section is greater than the axial length of the small diameter cylinder section, and the top of the large diameter cylinder section is blocked; an annular water passage is formed between the large diameter cylinder section and the small diameter cylinder section, and a first valve cylinder water passage hole, a second valve cylinder water passage hole and a water passage gap are provided on the cylinder wall of the large diameter cylinder section, the first valve cylinder water passage hole is located above the small diameter cylinder section, and the second valve cylinder water passage hole and the water passage gap are both connected with the water passage; The first interface is coaxially arranged with the second interface, the first interface is used to connect with the tank body of the softening tank, and the second interface is used to connect with the central tube in the softening tank. An inner cylinder is coaxially supported in the first interface, and the lower port of the inner cylinder forms the second interface, and the inner cylinder and the internal space of the movable valve cylinder are connected up and down; the movable valve cylinder has a first position and a second position in its rotation stroke, when the movable valve cylinder is in the first position, the first valve cylinder water hole and the second valve body water hole are both connected with the water outlet, the large diameter cylinder section blocks the first water outlet and the second water outlet, and the water inlet is connected with the first valve body water hole and the water passage; when the movable valve cylinder is in the second position, the large diameter cylinder section blocks the first valve body water hole and the second valve body water hole, the first valve cylinder water hole is connected with the first passage, and the second valve cylinder water hole is connected with the fourth passage.

6. The double valve body softening water treatment equipment according to claim 5, characterized in that: An annular second static valve plate is provided on the top of the inner cylinder. The second static valve plate is matched with the small-diameter cylinder section. The small-diameter cylinder section and the second static valve plate are rotatably sealed.

7. The double valve body softening water treatment equipment according to claim 5, characterized in that: A salt box water supply pipe is connected to the through portion of the first connecting port and the second connecting port, and a valve is connected to the salt box water supply pipe.

8. The double valve body softening water treatment equipment according to claim 5, characterized in that: A circle of supporting flange is formed on the inner cylinder wall of the large diameter cylinder section, and the small diameter cylinder section is coaxially connected below the supporting flange. The shape of the water-passing gap matches the outer shape of the large diameter cylinder section, and the water-passing gap extends from the bottom end of the supporting flange to the bottom end of the small diameter cylinder section in the axial direction of the large diameter cylinder section.

9. The double valve body softening water treatment equipment according to any one of claims 6 to 8, characterized in that: The lower end surface of the small diameter cylinder section is flush with the lower end surface of the large diameter cylinder section.

10. The double valve body softening water treatment equipment according to claim 5, characterized in that: The first valve body, the second valve body and the connecting pipe are integrally injection-molded.

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