Control valve and water purification apparatus comprising the same

Abstract

The present application relates to the technical field of water purification equipment, and particularly provides a control valve and water purification equipment comprising the same, aiming at solving the problem of complex switching waterway structure and easy water cross connection in the switching process of the existing control valve. To this end, the control valve of the present application comprises a valve body and a switching member, the valve body is provided with a water passing cavity, and water inlet channels, water outlet channels, first water passing channels, second water passing channels and water discharge channels connected with the water passing cavity; the switching member is movably connected in the water passing cavity and can be moved to multiple stations to disconnect the water passing cavity from at least one of the water outlet channels, the first water passing channels, the second water passing channels and the water discharge channels, and to connect the water outlet channels or the water discharge channels with the first water passing channels or the second water passing channels to form multiple waterway combinations. Through such a setting, the waterway structure and the switching structure are simplified, the switching process is simpler and faster, and water cross connection between different waterways can be effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of water purification equipment technology, specifically providing a control valve and a water purification device including the control valve. Background Technology

[0002] With technological advancements and increased awareness of water safety, water purification equipment has experienced rapid development and widespread adoption. By installing control valves within the equipment, various purification modules can be flexibly switched to form multiple water circuit combinations, allowing for different levels of purification and treatment of the water flow, thus meeting diverse user needs.

[0003] However, the existing control valves have complex switching water circuit structures and are prone to cross-contamination during the switching process.

[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems, namely, the existing control valve switching water circuit structure is complex and is prone to cross-flow during the switching process.

[0006] In a first aspect, the present invention provides a control valve, the control valve comprising a valve body and a switching component, the valve body being provided with a water passage cavity and an inlet channel, an outlet channel, a first water passage channel, a second water passage channel, and a drain channel connecting the water passage cavity to the outside; the switching component is movably connected within the water passage cavity and can move to multiple positions to disconnect the water passage cavity from one to three of the outlet channel, the first water passage channel, the second water passage channel, and the drain channel, and to connect two or three of the disconnected channels to form multiple water circuit combinations.

[0007] In the preferred embodiment of the control valve described above, the water passage chamber is connected to the water inlet channel, the water outlet channel, the first water passage channel, the second water passage channel, and the drainage channel respectively through the water inlet, the water outlet, the first water inlet, the second water inlet, and the drainage outlet; the switching component is provided with a connecting structure, the switching component can block one to three of the water outlets, the first water inlet, the second water inlet, and the drainage outlet, and the connecting structure can connect two or three of the blocked water outlets.

[0008] In the preferred embodiment of the control valve described above, the outlet, the first through-port, the second through-port, and the drain outlet are circumferentially spaced on the bottom wall of the water passage cavity; the switching component is configured as a movable valve plate rotatably connected to the bottom wall, the movable valve plate being in contact with the bottom wall, and the connecting structure is formed on the side of the movable valve plate in contact with the bottom wall, and the connecting structure is configured as a connecting groove, the movable valve plate being able to rotate to multiple positions to block one to three of the outlet, the first through-port, the second through-port, and the drain outlet, and to connect two or three of the blocked outlets through the connecting structure.

[0009] In the preferred embodiment of the control valve described above, the moving valve plate is circular, and the moving valve plate is also provided with a plurality of clearance ports distributed circumferentially, which can avoid unblocked water inlets; and / or the control valve also includes a fixed valve plate, which is fixed between the moving valve plate and the bottom wall, and the fixed valve plate is provided with a plurality of communication ports that are respectively connected to the water outlet, the first water inlet, the second water inlet and the drain outlet.

[0010] In the preferred embodiment of the control valve described above, the control valve further includes a third water passage, one end of which is connected to the first water passage or the second water passage, and the other end of which is connected to the outside.

[0011] In the preferred embodiment of the control valve described above, the control valve further includes a driving device, which is drivenly connected to the switching component and is capable of driving the switching component to move.

[0012] In the preferred embodiment of the control valve described above, the driving device includes a drive motor and a transmission mechanism. The drive motor is connected to the switching component via the transmission mechanism to drive the switching component to rotate.

[0013] In the preferred embodiment of the control valve described above, the transmission mechanism includes a transmission gear set and a transmission shaft. The input end of the transmission gear set is driven and connected to the drive motor, and the output end of the transmission gear set is driven and connected to the switching component through the transmission shaft.

[0014] In a second aspect, the present invention provides a water purification device, the water purification device comprising a resin tank, a filter device, a salt tank and the aforementioned control valve, wherein the inlet channel is connected to an inlet pipe, the outlet channel is directly or indirectly connected to a pure water pipe and a water supply pipe for the salt tank through the filter device, the drain channel is connected to a wastewater pipe, the first water passage is connected to the inlet of the resin tank, the second water passage is connected to the outlet of the resin tank, and the third water passage is connected to the regeneration pipe assembly of the salt tank.

[0015] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a soft water pipeline, which is connected to the water outlet channel; and / or the water purification equipment further includes a flow limiting device, which is installed on the wastewater pipeline.

[0016] With the above technical solution adopted, the control valve of the present invention includes a valve body and a switching component. The valve body is provided with a water passage chamber and an inlet channel, an outlet channel, a first water passage channel, a second water passage channel, and a drain channel connecting the water passage chamber to the outside. The switching component is movably connected in the water passage chamber and can move to multiple positions to disconnect the water passage chamber from one to three of the outlet channel, the first water passage channel, the second water passage channel, and the drain channel, and to connect two or three of the disconnected channels to form multiple water circuit combinations. Through this arrangement, multiple water circuit combinations can be formed to meet different task requirements, while simplifying the water circuit structure and switching structure inside the control valve, making the internal structure of the control valve more compact and reasonable, the switching process simpler and faster, and effectively preventing cross-contamination between different water circuits during the switching process.

[0017] Furthermore, the water passage cavity of the present invention is connected to the inlet channel, outlet channel, first water passage channel, second water passage channel, and drainage channel respectively via an inlet, outlet, first water passage, second water passage, and drainage outlet. The switching component is provided with a connecting structure, which can block one to three of the outlets (outlet, first water passage, second water passage, and drainage outlet), and the connecting structure can connect two or three of the blocked outlets. Through this arrangement, the switching component selectively blocks one or three outlets to cut off the water passage cavity from one or more channels; the connecting structure selectively connects two or three of the blocked outlets. These connections can be combined to form different water paths.

[0018] Furthermore, the outlet, first through-hole, second through-hole, and drain outlet of the present invention are circumferentially spaced on the bottom wall of the water passage cavity; the switching component is configured as a movable valve plate rotatably connected to the bottom wall, the movable valve plate being in contact with the bottom wall, and a connecting structure is formed on the side of the movable valve plate in contact with the bottom wall, and the connecting structure is configured as a connecting groove. The movable valve plate can rotate to multiple positions to block one to three of the outlet, first through-hole, second through-hole, and drain outlet, and to connect two or three of the blocked outlets through the connecting structure. By rationally constructing the specific structure and position of the movable valve plate and the connecting structure, switching between different water paths can be achieved by rotating the movable valve plate, which not only makes the switching process faster and smoother, but also simplifies the structure of the switching component and saves installation space.

[0019] Furthermore, the movable valve plate of the present invention is circular, and it is also provided with a plurality of clearance openings spaced circumferentially, which can avoid unblocked water inlets; and / or the control valve also includes a fixed valve plate, which is fixed between the movable valve plate and the bottom wall, and is provided with a plurality of communication openings respectively corresponding to the water outlet, the first water inlet, the second water inlet, and the drain outlet. Through this arrangement, while enabling the movable valve plate to rotate and switch between each water inlet, the structural strength of the movable valve plate and the sealing performance between it and each water inlet are also ensured, further improving the sealing performance between the various water passages.

[0020] Furthermore, the control valve of the present invention also includes a third water passage, one end of which is connected to the first or second water passage, and the other end of which is connected to the outside. This arrangement adds two more inlet or outlet paths for the control valve, further improving the diversity and flexibility of water circuit combinations.

[0021] Furthermore, the control valve of the present invention also includes a drive device, which is driven and connected to the switching member, and is capable of driving the switching member to move. With this configuration, automatic switching of the switching member can be achieved.

[0022] Furthermore, the driving device of the present invention includes a drive motor and a transmission mechanism. The drive motor is driven to rotate the switching component via the transmission mechanism. The transmission mechanism allows for flexible setting of the power transmission direction and distance, enabling a more rational arrangement of the installation positions of the components within the control valve, resulting in a more compact and rational structure within the control valve.

[0023] Furthermore, the transmission mechanism of the present invention includes a transmission gear set and a transmission shaft. The input end of the transmission gear set is driven and connected to a drive motor, and the output end of the transmission gear set is driven and connected to a switching component via the transmission shaft. This configuration provides a preferred embodiment of the transmission mechanism, achieving efficient power transmission and effective space utilization.

[0024] Furthermore, based on the aforementioned control valve, this invention provides a water purification device, specifically comprising: a resin tank, a filter device, a brine tank, and the aforementioned control valve. The inlet channel is connected to the inlet pipe; the outlet channel is directly or indirectly connected to the pure water pipe and the brine tank's replenishment pipe via the filter device; the drain channel is connected to the wastewater pipe; the first water passage is connected to the resin tank's inlet; the second water passage is connected to the resin tank's outlet; and the third water passage is connected to the brine tank's regeneration pipe assembly. This configuration, on the one hand, utilizes the control valve to achieve interconnection and switching between multiple channels, forming various water circuit combinations to realize multiple purification and rinsing modes, and making the water circuit structure more compact and rational; on the other hand, it can utilize softened and purified pure water to produce brine to regenerate the resin in the softening module, reducing impurities in the regenerated brine, lowering the probability of clogging in the brine tank, pipes, and valves, and extending the equipment's service life.

[0025] Furthermore, the water purification device of the present invention also includes a soft water pipeline, which is connected to the water outlet channel; and / or the water purification device also includes a flow limiting device, which is installed on the wastewater pipeline. The soft water pipeline enables independent access to soft water, meeting the user's needs for washing water; the flow limiting device controls the flow rate during forward and reverse washing processes, preventing excessive flow from disturbing the resin layer. Attached Figure Description

[0026] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0027] Figure 1 This is a schematic diagram of the control valve of the present invention;

[0028] Figure 2 This is a schematic diagram of the water passage chamber and power chamber of the control valve of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the first side of the moving valve plate of the present invention;

[0030] Figure 4 This is a schematic diagram of the second side of the moving valve plate of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the fixed valve plate of the present invention;

[0032] Figure 6 This is a schematic diagram of the assembly of the drive device of the present invention with the moving valve plate and the stationary valve plate;

[0033] Figure 7 This is a schematic diagram of the moving valve plate of the present invention at the water purification station. Figure 1

[0034] Figure 8 This is a schematic diagram of the moving valve plate of the present invention at the water purification station. Figure 2 ;

[0035] Figure 9 This is a schematic diagram of the moving valve plate of the present invention in the forward washing station. Figure 1 ;

[0036] Figure 10 This is a schematic diagram of the moving valve plate of the present invention in the forward washing station. Figure 2 ;

[0037] Figure 11 This is a schematic diagram of the moving valve plate of the present invention in the backwashing station. Figure 1 ;

[0038] Figure 12 This is a schematic diagram of the moving valve plate of the present invention in the backwashing station. Figure 2 ;

[0039] Figure 13 This is a schematic diagram of the moving valve plate of the present invention at the salt suction station. Figure 1 ;

[0040] Figure 14 This is a schematic diagram of the moving valve plate of the present invention at the salt suction station. Figure 2 ;

[0041] Figure 15 This is a schematic diagram of the water purification device of the present invention;

[0042] Figure 16 This is a schematic diagram of the operation of the water purification equipment of the present invention in water production mode;

[0043] Figure 17 This is a schematic diagram of the operation of the water purification equipment of the present invention in water replenishment mode;

[0044] Figure 18 This is a schematic diagram of the operation of the water purification device of the present invention in the forward brine absorption mode;

[0045] Figure 19 This is a schematic diagram of the operation of the water purification device of the present invention in reverse salt absorption mode;

[0046] Figure 20 This is a schematic diagram of the operation of the water purification equipment of the present invention in the forward washing mode;

[0047] Figure 21 This is a schematic diagram of the water purification equipment of the present invention operating in backwash mode.

[0048] List of reference numerals in the attached diagram:

[0049] 1. Control valve; 11. Inlet channel; 12. Drainage channel; 13. First water passage channel; 14. Second water passage channel; 15. Third water passage channel; 16. Outlet channel; 17. Water passage chamber; 171. Inlet; 172. Outlet; 173. First water passage; 174. Second water passage; 175. Drainage outlet; 181. Moving valve plate; 1811. Connecting groove; 1812. Clearance port; 182. Fixed valve plate; 1821. Connecting port; 191. Drive motor; 192. Drive gear; 193. Driven gear; 194. Drive shaft; 2. Resin tank; 3. Salt tank; 41. Reverse osmosis filter; 411. Raw water inlet; 412. Pure water inlet; 413. Wastewater inlet; 42. Booster pump; 43. Pre-filter; 44. Post-filter; 45. Pure water return pipeline; 51. Inlet pipeline; 52. Wastewater pipeline; 53. Pure water pipeline; 54. Make-up water pipeline; 55. Drainage pipeline; 56. Soft water pipeline; 61. Regenerated salt pipeline; 62. Suction device; 63. Regenerated water pipeline; 64. Mixing water pipeline; 71. Check valve; 72. Solenoid valve; 8. Flow limiting device; 9. Water quality testing device. Detailed Implementation

[0050] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the invention and are not intended to limit the scope of protection of the invention. Those skilled in the art can make adjustments as needed to adapt to specific applications.

[0051] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "front," and "rear," etc., indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] Based on the background art, existing control valves have complex switching water circuit structures and are prone to cross-contamination during switching. This invention provides a control valve and a water purification device including the control valve. By incorporating a water passage chamber within the valve body and connecting the water passage chamber to the outside via an inlet channel, an outlet channel, a first water passage channel, a second water passage channel, and a drain channel, along with a switching component movable between multiple positions, the water passage chamber can be disconnected from one to three of the outlet channel, the first water passage channel, the second water passage channel, and the drain channel, while allowing two or three of the disconnected channels to connect, thus forming various water circuit combinations to meet different task requirements. This also simplifies the water circuit structure and switching structure within the control valve, making the switching process simpler and faster, and effectively preventing cross-contamination between different water circuits during switching.

[0054] Specifically, such as Figure 1 As shown, the control valve 1 of the present invention includes a valve body and a switching component. The valve body is provided with a water passage chamber 17 and a water inlet channel 11, a water outlet channel 16, a first water passage channel 13, a second water passage channel 14 and a drainage channel 12 connecting the water passage chamber 17 to the outside. The switching component is movably connected in the water passage chamber 17 and can move to multiple positions to disconnect the water passage chamber 17 from one to three of the water outlet channel 16, the first water passage channel 13, the second water passage channel 14 and the drainage channel 12, and to connect two or three of the disconnected channels.

[0055] like Figure 2 As shown, regarding the specific working principle of the control valve 1, preferably, the water passage 17 is connected to the water inlet channel 11, the water outlet channel 16, the first water passage channel 13, the second water passage channel 14 and the drain channel 12 through the water inlet 171, the water outlet 172, the first water passage 173, the second water passage 174 and the drain outlet 175 respectively.

[0056] Correspondingly, such as Figure 3 and Figure 4 As shown, a connecting structure is provided on the switching component. When the switching component moves to different work positions, it can block one to three of the water outlets 172, the first water inlet 173, the second water inlet 174, and the drain outlet 175 to cut off the connection between the water passage 17 and one to three of the channels 16, 13, 14, and 12. At the same time, the connecting structure can connect two or three of the blocked water outlets, while the water inlet 171 is in a normally open state to maintain the connection between the water passage 17 and the water inlet channel 11.

[0057] The positions of each water inlet and the specific structure of the switching component can be flexibly set as needed. Preferably, the water outlet 172, the first water inlet 173, the second water inlet 174, and the drain outlet 175 of the present invention are arranged circumferentially at intervals on the bottom wall of the water passage cavity 17. Correspondingly, the switching component is configured as a movable valve plate 181 rotatably connected to the bottom wall. The movable valve plate 181 fits against the bottom wall to ensure the sealing of each water inlet. The shape of the movable valve plate 181 can be flexibly set as circular, fan-shaped, or other irregular shapes, as long as it can seal at least one water inlet on the bottom wall.

[0058] like Figure 4 As shown, the connecting structure is formed on the side of the moving valve plate 181 that is in contact with the bottom wall. Preferably, the connecting structure is a connecting groove 1811, which is configured to be able to connect with any two or three adjacent water inlets on the bottom wall at the same time, thereby forming a rotary flow channel and realizing the connection of two or three adjacent channels. For example, the shape of the connecting groove 1811 can be set as a strip, an arc or a fan, etc. In this application, it is preferred to set as an arc-shaped connecting groove 1811 extending in the circumferential direction.

[0059] like Figures 9 to 14 As shown, the movable valve plate 181 can rotate between multiple work positions. When the movable valve plate 181 rotates to different work positions, it can block one to three of the water outlets 172, the first water inlet 173, the second water inlet 174, and the drain outlet 175, and make the connecting structure connect two or three of the blocked water outlets to form different rotary flow channels.

[0060] By rationally constructing the specific structure and position of the moving valve plate 181 and the connecting structure, the rotation of the moving valve plate 181 is used to switch between different water circuits. This not only makes the switching process faster and smoother, but also simplifies the structure of the switching components and saves installation space.

[0061] More preferably, the movable valve plate 181 is circular, and at least one clearance port 1812 is provided on the movable valve plate 181 at intervals along the circumference. The clearance port 1812 can avoid the unblocked water inlet. Preferably, the clearance port 1812 has the same shape as the water inlet on the bottom wall, so that when the movable valve plate 181 rotates to a certain position, the clearance port 1812 can partially or completely overlap with the water inlet at the opposite position.

[0062] like Figure 5 and Figure 6As shown, to improve the tightness of the fit between the movable valve plate 181 and the bottom wall and prevent water from seeping out from the gap between them, a fixed valve plate 182 is also fixed between the movable valve plate 181 and the bottom wall. The fixed valve plate 182 is provided with multiple connecting ports 1821 that are respectively connected to the outlet 172, the first water passage 173, the second water passage 174, and the drain 175. Preferably, each connecting port 1821 coincides with the corresponding water passage on the bottom wall. The fixed valve plate 182 can be made of ceramic or rubber and its two sides can be tightly fitted to the movable valve plate 181 and the bottom wall respectively, playing a sealing role. This can effectively prevent water leakage, ensure the sealing performance of the movable valve plate 181 in blocking the water passage, and also prevent water from flowing between different water passages.

[0063] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the control valve 1 of the present invention further includes a third water passage 15, one end of which is connected to the first water passage 13 or the second water passage 14, and the other end of which is connected to the outside. This adds two more water inlet or outlet paths for the control valve 1, further improving the diversity and flexibility of the water circuit combination.

[0064] The switching components can be manually driven by a mechanical structure or electrically driven by a drive device. Preferably, such as... Figure 2 and Figure 6 As shown, the control valve 1 of the present invention also includes a driving device, which is drivenly connected to the switching component and can drive the switching component to move, thereby enabling automatic switching of the switching component.

[0065] Preferably, the driving device includes a drive motor 191 and a transmission mechanism. The drive motor 191 is driven to the switching component through the transmission mechanism to drive the switching component (moving valve plate 181) to rotate.

[0066] More preferably, the transmission mechanism includes a transmission gear set and a transmission shaft 194. The input end of the transmission gear set is driven and connected to the drive motor 191, and the output end of the transmission gear set is driven and connected to the switching component through the transmission shaft 194.

[0067] In this application, as Figure 6 As shown, the transmission gear set includes a driving gear 192 and a driven gear 193 that mesh with each other. The drive motor 191 is installed in the power chamber on one side of the water passage chamber 17. The output shaft of the drive motor 191 is fixedly connected to the driving gear 192. The driven gear 193 is coaxially arranged with the switching component (moving valve plate 181) and is connected through the transmission shaft 194.

[0068] This allows for more flexible setting of the power transmission direction and distance, enabling the drive device to adapt to the installation positions of various components within control valve 1, and making the structure within control valve 1 more compact and rational.

[0069] It should be noted that the control valve 1 of the present invention can be applied to various devices, such as water treatment devices such as water purification devices and water softening devices, or washing devices such as washing machines and dishwashers, to realize the connection and switching between different water circuits and meet different task requirements. This case takes water purification devices as an example for detailed description.

[0070] Specifically, such as Figure 14 As shown, the water purification equipment provided by the present invention includes a resin tank 2, a filter device, a salt tank 3, and the aforementioned control valve 1. The resin tank 2 is used to soften the flowing water, the filter device is used to filter the flowing water, and the salt tank 3 is used to store brine for resin regeneration. Inside the control valve 1, the connection and switching of each channel are realized by the movement of the switching component.

[0071] Outside the control valve 1, the inlet channel 11 is connected to an external water source (tap water pipe or raw water tank) through the inlet pipe 51. The outlet channel 16 is directly or indirectly connected to the pure water pipe 53 and the water replenishment pipe 54 of the salt tank 3 through the filter device. The drain channel 12 is connected to the outside through the wastewater pipe 52. The first water passage 13 is connected to the inlet 171 of the resin tank 2. The second water passage 14 is connected to the outlet 172 of the resin tank 2, thus forming a circulating water circuit with the resin tank 2. The third water passage 15 is connected to the regeneration pipe group of the salt tank 3. Preferably, an on / off valve is provided on the third water passage 15 to control the independent on / off of the third water passage 15.

[0072] In addition, the water purification device of the present invention also includes a soft water pipeline 56, which connects the water outlet channel 16 to the outside, enabling the independent export of soft water and meeting the user's needs for washing water.

[0073] Specifically, such as Figures 7 to 14 As shown, the movable valve plate 181 of the present invention can rotate between the water production station, the forward washing station, the backwashing station and the brine suction station, thereby enabling the water purification equipment to flexibly switch between the water production mode, the forward washing mode, the backwashing mode and the brine suction mode.

[0074] When implementing water production mode, such as Figure 7 and Figure 8The system closes the third water passage 15 through the on / off valve and rotates the moving valve plate 181 to the water production position through the drive device. At this time, the moving valve plate 181 blocks the outlet 172, the drain outlet 175 and the second water passage 174 to cut off the direct connection between the water passage 17 and the outlet channel 16, the drain channel 12 and the second water passage 14. The bypass port 1812 partially or completely overlaps with the first water passage 173 so that the water passage 17 and the first water passage 13 remain in direct communication. The connecting groove 1811 is simultaneously connected to the second water passage 174 and the outlet 172 so that the second water passage 14, the connecting groove 1811 and the outlet channel 16 form a rotary flow channel.

[0075] like Figure 16 As shown, this allows the raw water to enter the water passage chamber 17 from the water inlet channel 11, and then sequentially pass through the first water outlet 173, the first water passage 13, the water inlet 171 of the resin tank 2, and the resin layer to soften the water flow. Then, it sequentially passes through the water outlet 172 of the resin tank 2, the second water passage 14, the second water outlet 174, the connecting groove 1811, the water outlet 172, and the water outlet channel 16 to exit the control valve 1 and enter the filter device and the soft water pipeline 56 to filter the soft water or directly export it, thereby realizing the independent production of pure water and soft water as well as the replenishment of the brine tank 3.

[0076] Preferably, such as Figure 16 and Figure 17 As shown, solenoid valves 72 are installed on both the pure water pipeline 53 and the water replenishment pipeline 54, which can control the opening and closing of the corresponding pipelines according to the task requirements. When the user needs to take pure water, he only needs to control the solenoid valve 72 on the pure water pipeline 53 to open. When he needs to replenish water to the salt tank 3, he only needs to control the solenoid valve 72 on the water replenishment pipeline 54 to open. It should be noted that the solenoid valves 72 on the pure water pipeline 53 and the water replenishment pipeline 54 can be controlled independently and do not affect each other.

[0077] When performing forward wash mode, such as Figure 9 and Figure 10 As shown, the system closes the third water passage 15 through the on / off valve, and rotates the moving valve plate 181 to the forward washing position through the drive device. At this time, the moving valve plate 181 blocks the second water inlet 174 and the drain outlet 175 to cut off the direct connection between the water passage 17 and the second water passage 14 and the drain outlet 12. The bypass port 1812 partially or completely overlaps with the first water inlet 173 and the outlet 172 so that the water passage 17 maintains a direct connection with the first water passage 13 and the outlet outlet 16. The connecting groove 1811 is simultaneously connected to the second water inlet 174 and the drain outlet 175 so that the second water passage 14, the connecting groove 1811 and the drain outlet 12 form a rotary flow channel.

[0078] like Figure 20As shown, this causes the raw water to enter the water passage 17 from the water inlet channel 11 and then split into two paths. The first path enters the resin tank 2 through the first water outlet 173, the first water passage 13, and the water inlet 171 of the resin tank 2 in sequence, and performs a forward rinsing of the resin layer. The rinsing wastewater passes through the water outlet 172 of the resin tank 2, the second water passage 14, the second water outlet 174, the connecting groove 1811, the drain outlet 175, and the drain passage 12 in sequence before being discharged from the control valve 1, thus completing the forward rinsing of the resin layer.

[0079] The second path flows directly out of the control valve 1 through the outlet 172 and the outlet channel 16 and into the filter device and the soft water pipeline 56. This allows the raw water to be introduced into the filter device for filtration or directly exported through the soft water pipeline 56. It does not soften the water flow, but it can meet the user's basic needs for filtered water and domestic water.

[0080] When executing anti-wash mode, such as Figure 11 and Figure 12 As shown, the system closes the third water passage 15 through the on / off valve and rotates the moving valve plate 181 to the backwash position through the drive device. At this time, the moving valve plate 181 blocks the first water inlet 173 and the drain outlet 175 to cut off the direct connection between the water passage 17 and the first water passage 13 and the drain outlet 12. The bypass port 1812 partially or completely overlaps with the second water inlet 174 and the outlet 172 so that the water passage 17 maintains a direct connection with the second water passage 14 and the outlet outlet 16. The connecting groove 1811 is simultaneously connected to the first water inlet 173 and the drain outlet 175 so that the first water passage 13, the connecting groove 1811 and the drain outlet 12 form a rotary flow channel.

[0081] like Figure 21 As shown, this causes the water flow to split into two paths after entering the water passage 17 from the water inlet channel 11. The first path enters the resin tank 2 through the second water outlet 174, the second water passage 14, and the water outlet 172 of the resin tank 2 in sequence, and performs backwashing on the resin layer. The wastewater after rinsing passes through the water inlet 171, the first water passage 13, the first water outlet 173, the connecting groove 1811, the drain outlet 175, and the drain passage 12 of the resin tank 2 in sequence before being discharged from the control valve 1, thus completing the backwashing of the resin layer.

[0082] The second path flows directly out of the control valve 1 through the outlet 172 and the outlet channel 16 and into the filter device and the soft water pipeline 56. This allows the raw water to be introduced into the filter device for filtration or directly exported through the soft water pipeline 56. It does not soften the water flow, but it can meet the user's basic needs for filtered water and domestic water.

[0083] Regarding the salt absorption mode, this application provides two preferred implementation methods, namely forward salt absorption or reverse salt absorption. Correspondingly, the connection position of the third water passage 15 and the relative position of the connecting groove 1811 and the avoidance port 1812 are slightly different.

[0084] Specifically, in the first preferred embodiment, such as Figure 1 , Figure 13 and Figure 14 As shown, the third water passage 15 is connected to the first water passage 13. When the salt suction mode is executed, the system opens the third water passage 15 through the on / off valve and rotates the moving valve plate 181 to the salt suction position through the drive device. At this time, the moving valve plate 181 blocks the first water inlet 173, the second water inlet 174 and the drain outlet 175 to cut off the direct connection between the water passage 17 and the first water passage 13, the second water passage 14 and the drain outlet 12. The bypass port 1812 partially or completely overlaps with the outlet 172 so that the water passage 17 and the outlet channel 16 remain in a direct communication state. The connecting groove 1811 is simultaneously connected to the second water inlet 174 and the drain outlet 175 so that the second water passage 14, the connecting groove 1811 and the drain outlet 12 form a rotary flow channel.

[0085] like Figure 18 As shown, this allows the brine in the salt tank 3 to flow into the resin tank 2 sequentially through the third water passage 15, the first water passage 13, and the inlet 171 of the resin tank 2, thus regenerating the resin in the forward direction. The regenerated wastewater is then discharged sequentially through the outlet 172 of the resin tank 2, the second water passage 14, the second water outlet 174, the connecting trough 1811, the drain outlet 175, and the drain channel 12, completing the forward salt absorption and regeneration of the resin.

[0086] Meanwhile, after the raw water enters the water passage chamber 17 through the water inlet channel 11, it flows directly out of the control valve 1 through the water outlet 172 and the water outlet channel 16 and enters the filter device and the soft water pipeline 56. This allows the raw water to be introduced into the filter device for filtration or directly exported through the soft water pipeline 56. It does not soften the water flow, but it can meet the user's basic needs for pure water and domestic water.

[0087] In the second preferred embodiment, the third water passage 15 is connected to the second water passage 14. When the salt suction mode is executed, the system opens the third water passage 15 through the on / off valve and rotates the moving valve plate 181 to the salt suction position through the drive device. At this time, the moving valve plate 181 blocks the first water inlet 173, the second water inlet 174 and the drain outlet 175 to cut off the direct connection between the water passage 17 and the first water passage 13, the second water passage 14 and the drain outlet 12. The avoidance port 1812 partially or completely overlaps with the outlet 172 so that the water passage 17 and the outlet channel 16 remain in a direct communication state. The connecting groove 1811 is simultaneously connected to the first water inlet 173 and the drain outlet 175 so that the first water passage 13, the connecting groove 1811 and the drain outlet 12 form a rotary flow channel.

[0088] like Figure 19 As shown, this allows the brine in the salt tank 3 to flow into the resin tank 2 sequentially through the third water passage 15, the second water passage 14, and the outlet 172 of the resin tank 2, regenerating the resin in reverse. The regenerated wastewater is then discharged sequentially through the inlet 171, the first water passage 13, the first water outlet 173, the connecting trough 1811, the outlet 175, and the drainage channel 12 of the resin tank 2, thus completing the reverse salt absorption regeneration of the resin.

[0089] Meanwhile, after the raw water enters the water passage chamber 17 through the water inlet channel 11, it flows directly out of the control valve 1 through the water outlet 172 and the water outlet channel 16 and enters the filter device and the soft water pipeline 56. This allows the raw water to be introduced into the filter device for filtration or directly exported through the soft water pipeline 56. It does not soften the water flow, but it can meet the user's basic needs for pure water and domestic water.

[0090] With this setup, on the one hand, the control valve 1 enables the connection and switching between multiple channels to form various water circuit combinations, realize multiple purification and flushing modes, and make the water circuit structure more compact and reasonable; on the other hand, it can use softened and purified pure water to produce brine to regenerate the resin in the softening module, reducing impurities in the regenerated brine, lowering the probability of clogging of the salt tank 3, pipelines and valves, and extending the service life of the equipment.

[0091] Regarding the filtration device, the present invention can be configured as a combination of one or more filters, including but not limited to reverse osmosis filter 4141, activated carbon filter and ultrafiltration membrane, etc.

[0092] In a preferred embodiment, such as Figure 15As shown, the filtration device of the present invention includes a reverse osmosis filter 41 and a booster pump 42. The reverse osmosis filter 41 includes a raw water inlet 411, a pure water inlet 412, and a wastewater inlet 413. The raw water inlet 411 is directly or indirectly connected to the water outlet channel 16 through the booster pump 42. The pure water inlet 412 is directly or indirectly connected to the pure water pipeline 53 and the water supply pipeline 54. The wastewater inlet 413 is connected to the wastewater pipeline 52 through the drainage pipeline 55. The reverse osmosis filter 41 can filter out most of the dissolved solids, organic matter, heavy metals, bacteria, viruses, and other minute pollutants in the water flow to produce water with high purity.

[0093] Based on the reverse osmosis filter 41, the filtration device also includes a pre-filter 43 and a post-filter 44 made of activated carbon. The inlet of the pre-filter 43 is connected to the outlet channel 16, and the outlet of the pre-filter 43 is connected to the raw water inlet 411 through the booster pump 42. The pre-filter 43 can effectively remove large particulate impurities, reduce the filtration pressure of the subsequent reverse osmosis filter 41, protect the equipment, and help extend its service life.

[0094] The inlet of the post-filter 44 is connected to the pure water outlet 412, and the outlet of the post-filter 44 is connected to the pure water pipeline 53 and the water supply pipeline 54. The post-filter 44 can absorb odors in the water flow and improve the taste.

[0095] Preferably, the filtration device of the present invention further includes a pure water return pipeline 45. The inlet end of the pure water return pipeline 45 is connected to the outlet of the post-filter 44, and the outlet end of the pure water return pipeline 45 is connected to the raw water outlet 411 through a booster pump 42. This allows some of the pure water filtered by the filtration device to be reintroduced into the front end of the reverse osmosis filter 41, so that the pure water and the raw water are mixed before entering the reverse osmosis filter 41. On the one hand, this can improve water quality and reduce the burden on the reverse osmosis filter 41. On the other hand, when the equipment is restarted after being shut down for a period of time, the pure water is returned, which can prevent the TDS value of the first cup of water from rising significantly and ensure the quality of the drinking water.

[0096] Regarding the regeneration tubing assembly, the brine tank 3 can be positioned higher than the control valve 1 and the resin tank 2. A solenoid valve 72 can be installed on the regeneration tubing assembly to control its on / off state. After the solenoid valve 72 is opened, the brine will flow into the control valve 1 under the action of gravity.

[0097] In order to improve the space utilization of the equipment and make the functional modules more compact, the salt tank 3 is located at the bottom of the equipment. It is necessary to add a suction device 62 to the regeneration pipe assembly to draw the brine into the resin tank 2. Preferably, the regeneration pipe assembly includes a regeneration salt pipeline 61 and a suction device 62. The inlet end of the regeneration salt pipeline 61 is connected to the salt tank 3, and the outlet end of the regeneration salt pipeline 61 is directly or indirectly connected to the third water passage 15 through the suction device 62. The brine can be drawn by operating the suction device 62.

[0098] Preferably, such as Figure 15 As shown, the water purification device of the present invention also includes a reclaimed water pipeline 63. The inlet end of the reclaimed water pipeline 63 is connected to the outlet of the pre-filter 43, and the outlet end of the reclaimed water pipeline 63 is directly or indirectly connected to the third water passage 15. Pure water can be mixed into the brine through the reclaimed water pipeline 63 to reduce the concentration of the brine, reduce salt waste and residue on the resin surface, and also reduce the difficulty of rinsing the resin after the salt absorption mode.

[0099] Regarding the suction device 62, it can be configured as a suction pump to extract brine. In this application, since the water flow in the reclaimed water pipeline 63 can flow upward under the action of the inlet water pressure (usually tap water pressure), there is no need to set up the suction device 62. At the same time, it is also necessary to take into account the need for mixing pure water and brine. Preferably, the suction device 62 in this application is configured as an ejector, and a mixing pipeline 64 is provided so that the inlet port of the ejector is connected to the outlet port of the reclaimed water pipeline 63, the outlet port of the ejector is connected to the third water passage 15 through the mixing pipeline 64, and the negative pressure port of the ejector is connected to the outlet port of the reclaimed salt pipeline 61.

[0100] Specifically, the structure of the ejector is similar to that of a Venturi tube. Inside, a contraction chamber, a negative pressure chamber, and an expansion chamber are formed sequentially along the water flow direction. The water inlet is located at the end of the contraction chamber, the water outlet is located at the end of the expansion chamber, and the negative pressure port is located on the side of the ejector and is connected to the negative pressure chamber. When the water flows through the negative pressure chamber, the speed will increase sharply, causing the negative pressure port to generate negative pressure to draw brine from the brine tank 3 through the regeneration salt pipeline 61, so that the brine and pure water are mixed in the ejector and enter the mixing pipeline 64 through the water outlet.

[0101] By allowing water to flow through the ejector, the Venturi effect of the ejector can be used to automatically draw in brine, eliminating the need for a dedicated suction pump, thus reducing equipment costs and improving reliability.

[0102] It should be noted that by setting the diameter of the inlet port and the negative pressure port, the flow ratio of the inlet port and the negative pressure port can be controlled, thereby reasonably controlling the mixing ratio of pure water and salt water. In this application, the mixing ratio of pure water and salt water is preferably controlled at 2:1. Under this mixing ratio, a relatively ideal salt consumption can be achieved. The salt water is saturated salt water, which is about 26% at room temperature.

[0103] Preferably, such as Figure 15 As shown, the mixing pipe 64, pure water return pipe 45, pure water pipe 53, and drainage pipe 55 of the present invention are all equipped with one-way valves 71, and the reclaimed water pipe 63, pure water return pipe 45, drainage pipe 55, water supply pipe 54, and pure water pipe 53 are also equipped with solenoid valves 72. This allows for independent on / off switching of the above pipes and prevents backflow of water.

[0104] During the forward or reverse wash cycle, the rinsing relies entirely on the pressure of tap water. However, the pressure of tap water is not stable. If the pressure is too high, it will have a significant impact on the resin layer and may cause it to break apart.

[0105] Based on this, the water purification equipment of the present invention also includes a flow limiting device 8, preferably configured as a flow limiting plate. The flow limiting device 8 is installed on the wastewater pipeline 52 and can control the flow rate and velocity of the flushing water to prevent excessive flow rate and velocity from damaging the resin layer.

[0106] Preferably, the present invention provides a water quality detection device 9 on the downstream pipeline (soft water pipeline 56 or the pipeline between the outlet channel 16 and the filter device) outside the inlet pipeline 51 and the outlet channel 16. The water quality detection device 9 can detect the softening performance of the resin in real time, so as to regenerate the resin in a timely manner. The water quality detection device 9 can be set as a TDS sensor or a hardness sensor, etc.

[0107] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A control valve (1), characterized in that, The control valve (1) includes a valve body and a switching component. The valve body is provided with a water passage (17) and a water inlet channel (11), a water outlet channel (16), a first water passage channel (13), a second water passage channel (14), and a drainage channel (12) connecting the water passage (17) to the outside. The switching component is movably connected within the water passage cavity (17) and can be moved to multiple workstations to disconnect the water passage cavity (17) from one to three of the water outlet channel (16), the first water passage channel (13), the second water passage channel (14), and the drainage channel (12), and connect two or three of the disconnected channels to form multiple water circuit combinations.

2. The control valve (1) according to claim 1, characterized in that, The water passage (17) is connected to the water inlet channel (11), the water outlet channel (16), the first water passage channel (13), the second water passage channel (14) and the drainage channel (12) respectively through the water inlet (171), the water outlet (172), the first water inlet (173), the second water inlet (174) and the drainage outlet (175); The switching component is provided with a connecting structure, which can block one to three of the water outlets (172), the first water inlet (173), the second water inlet (174) and the drain outlet (175), and the connecting structure can connect two or three of the blocked water outlets.

3. The control valve (1) according to claim 2, characterized in that, The outlet (172), the first water inlet (173), the second water inlet (174) and the drain outlet (175) are arranged circumferentially on the bottom wall of the water passage cavity (17); The switching component is configured as a movable valve plate (181) rotatably connected to the bottom wall. The movable valve plate (181) is in contact with the bottom wall. The connecting structure is formed on the side of the movable valve plate (181) that is in contact with the bottom wall. The connecting structure is configured as a connecting groove (1811). The movable valve plate (181) can rotate to multiple positions to block one to three of the outlet (172), the first water inlet (173), the second water inlet (174), and the drain outlet (175), and to connect two or three of the blocked water inlets through the connecting structure.

4. The control valve (1) according to claim 3, characterized in that, The movable valve plate (181) is circular, and the movable valve plate (181) is also provided with a plurality of clearance openings (1812) distributed circumferentially, the clearance openings (1812) being able to avoid unblocked water inlets; and / or The control valve (1) further includes a fixed valve plate (182), which is fixed between the movable valve plate (181) and the bottom wall. The fixed valve plate (182) is provided with a plurality of communication ports (1821) that are respectively connected to the outlet (172), the first water inlet (173), the second water inlet (174) and the drain outlet (175).

5. The control valve (1) according to any one of claims 1 to 4, characterized in that, The control valve (1) further includes a third water passage (15), one end of which is connected to the first water passage (13) or the second water passage (14), and the other end of which is connected to the outside.

6. The control valve (1) according to claim 5, characterized in that, The control valve (1) also includes a drive device, which is drivenly connected to the switching component and can drive the switching component to move.

7. The control valve (1) according to claim 6, characterized in that, The driving device includes a drive motor (191) and a transmission mechanism. The drive motor (191) is driven to the switching component through the transmission mechanism to drive the switching component to rotate.

8. The control valve (1) according to claim 7, characterized in that, The transmission mechanism includes a transmission gear set and a transmission shaft (194). The input end of the transmission gear set is driven and connected to the drive motor (191), and the output end of the transmission gear set is driven and connected to the switching component through the transmission shaft (194).

9. A water purification device, characterized in that, The water purification equipment includes a resin tank (2), a filter device, a salt tank (3), and a control valve (1) as described in claim 5. The water inlet channel (11) is connected to the water inlet pipe (51). The water outlet channel (16) is directly or indirectly connected to the pure water pipe (53) and the water replenishment pipe (54) of the salt tank (3) through the filter device. The drainage channel (12) is connected to the wastewater pipe (52). The first water passage channel (13) is connected to the water inlet (171) of the resin tank (2). The second water passage channel (14) is connected to the water outlet (172) of the resin tank (2). The third water passage channel (15) is connected to the regeneration pipe assembly of the salt tank (3).

10. The water purification equipment according to claim 9, characterized in that, The water purification equipment also includes a soft water pipe (56), which is connected to the water outlet channel (16); and / or The water purification equipment also includes a flow limiting device (8), which is installed on the wastewater pipeline (52).

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