A water softening valve and water softening machine

Abstract

The utility model relates to soft water valve technical field especially relates to a kind of soft water valve and soft water machine, soft water valve includes control valve body, drive assembly, eccentric shaft and piston, eccentric shaft is arranged in control valve body, drive assembly is connected with eccentric shaft transmission;Eccentric shaft includes main shaft part and eccentric part, piston is connected with eccentric transmission;Main shaft part is provided with magnetic piece, control valve body is provided with the Hall induction component corresponding with magnetic piece, magnetic piece has different magnetic induction intensity in the different direction perpendicular eccentric shaft axial direction, to reduce the magnetic field source, significantly reduce magnetic field interference risk, the magnetic induction intensity of magnetic piece is continuously changed with angle, Hall induction component can be through detecting the continuous difference of magnetic field intensity, realize the stepless identification of angle, to accurately judge piston position, improve the precision and reliability of piston position detection. And simultaneously simplify the structure and quantity of magnetic piece and Hall induction component, reduce mechanical failure rate, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of water softener valve technology, and in particular to a water softener valve and a water softener. Background Technology

[0002] The softening valve in a water softener is the core control hub of the entire system. Through its complex internal channel design and piston movement, the valve precisely guides water flow to different paths. Inside the valve, one or more pistons move up and down or rotate within the valve chamber, driven by a motor or hydraulic system. Grooves and sealing rings on the pistons engage with the valve chamber, and changing the piston position switches between different water flow channels. Existing softening valves often employ multiple spaced magnets and / or Hall effect sensors to detect the piston position and control the valve. However, in environments with high humidity, impurities, and temperature fluctuations, this design significantly increases the risk of magnetic field interference, affecting the accuracy of piston position detection. Utility Model Content To solve the above problems, this utility model provides a water softener valve and a water softener.

[0003] The present invention provides a water softener valve, comprising a control valve body, a drive assembly, an eccentric shaft, and a piston. The eccentric shaft passes through the control valve body, and the drive assembly is throttle-connected to the eccentric shaft. The eccentric shaft includes a main shaft portion and an eccentric portion. The main shaft portion rotates around the axis of the eccentric shaft, and the eccentric portion is eccentrically positioned relative to the main shaft portion. The piston is throttle-connected to the eccentric portion. A magnetic element is provided on the main shaft portion, and a Hall effect sensor corresponding to the magnetic element is provided on the control valve body. The magnetic element has different magnetic induction intensities in different directions perpendicular to the eccentric shaft axis.

[0004] Preferably, the magnetic component is a magnetic ring, which is sleeved on the main shaft portion.

[0005] Preferably, a sleeve is provided on the outside of the control valve body, and one end of the main shaft near the magnetic ring is disposed in the sleeve. The soft water valve also includes a retainer, and the retainer and the sleeve enclose a receiving space. The magnetic ring is disposed in the receiving space, and the magnetic ring and the retainer are sequentially sleeved on the main shaft in a direction away from the control valve body.

[0006] Preferably, the main shaft portion has a first straight section near the end of the magnetic ring, and the inner wall of the magnetic ring includes a second straight section, with the first straight section and the second straight section corresponding to each other.

[0007] Preferably, the control valve body is provided with a circuit box, the circuit box is provided with a circuit board, and the Hall sensor component is disposed on the circuit board.

[0008] Preferably, the drive assembly is disposed at one end of the eccentric shaft, and the magnetic element is disposed at the other end of the eccentric shaft.

[0009] Preferably, the axial direction of the eccentric shaft is perpendicular to the axial direction of the piston, the eccentric part is a cam, the piston includes a transmission disk, the transmission disk has a groove, and the cam is disposed in the groove.

[0010] Preferably, the groove is annular in shape, comprising two symmetrical semicircular segments and two parallel straight segments disposed between the semicircular segments, wherein the semicircular segments and the straight segments are smoothly connected, and the cam is disc-shaped, wherein the diameter of the semicircular segments is greater than or equal to the diameter of the cam.

[0011] Preferably, the control valve body has a guide groove corresponding to the piston's movement direction, the piston is provided with a guide block, and the guide block is slidably connected to the guide groove.

[0012] To solve the above-mentioned technical problems, this utility model provides another technical solution as follows: a water softener, wherein the water softener includes the water softener valve described above.

[0013] Compared with the prior art, the water softener valve and water softener provided by this utility model have the following beneficial effects: 1. This utility model provides a soft water valve, which includes a control valve body, a drive assembly, an eccentric shaft, and a piston. The eccentric shaft passes through the control valve body, and the drive assembly is driven by the eccentric shaft. The eccentric shaft includes a main shaft portion and an eccentric portion. The main shaft portion rotates around the axis of the eccentric shaft, and the eccentric portion is eccentrically positioned relative to the main shaft portion. The piston is driven by the eccentric portion. A magnetic element is provided on the main shaft portion, and a Hall effect sensor corresponding to the magnetic element is provided on the control valve body. The magnetic element has different magnetic induction intensities in different directions perpendicular to the eccentric shaft axis. Because the drive assembly is driven by the eccentric shaft, and the piston is driven by the eccentric portion, and the eccentric portion is part of the eccentrically positioned main shaft portion, when the drive assembly drives the eccentric shaft to rotate, the eccentric portion drives the piston to change position, thereby switching different water flow channels. Compared to traditional soft water valves that use multiple spaced magnets or Hall effect sensors for position detection, which are prone to magnetic field interference, this technical solution uses a magnetic component on the main shaft. The difference in magnetic induction intensity along the vertical axis is used by the Hall effect sensor for detection, reducing the number of magnetic field sources and significantly lowering the risk of magnetic field interference. The Hall effect sensor detects the intensity of a single magnetic field source, rather than identifying multiple discrete magnetic field switching signals, thus exhibiting stronger anti-interference capabilities and effectively reducing the impact of magnetic field interference. The magnetic induction intensity of the magnetic component changes continuously with the angle; the Hall effect sensor can detect this continuous difference in magnetic field intensity to achieve stepless angle recognition, thereby accurately determining the piston position and improving the accuracy and reliability of piston position detection in the harsh operating conditions of the soft water valve. Furthermore, the simplified structure and number of magnetic components and Hall effect sensors mean a significant reduction in the number of parts that need to be installed and sealed, lowering the mechanical failure rate caused by improper installation or seal failure, and reducing maintenance costs.

[0014] 2. The magnetic component provided in this embodiment is a magnetic ring, which is sleeved on the main shaft. The magnetic ring achieves precise positioning through different magnetic induction intensities with each rotation, which helps improve the anti-interference capability and accuracy of position detection. Furthermore, the sleeved design ensures the magnetic ring fits tightly against the outer surface of the main shaft, preventing it from loosening or falling off due to vibration or temperature changes, thus providing stronger structural stability. Compared to attaching multiple discrete magnetic components, sleeved magnetic rings are simpler in process and reduce manufacturing and maintenance costs.

[0015] 3. In this embodiment of the invention, a sleeve is provided on the outer side of the control valve body. The end of the main shaft near the magnetic ring is located inside the sleeve. The soft water valve also includes a retaining sleeve. The retaining sleeve and the sleeve together form a receiving space, in which the magnetic ring is located. The magnetic ring and the retaining sleeve are sequentially fitted onto the main shaft in a direction away from the control valve body. This structure provides additional support and protection for the ends of the magnetic ring and the main shaft, enhancing overall rigidity and further improving resistance to external impacts and vibrations. The receiving space formed by the retaining sleeve and the sleeve reduces the risk of magnetic ring failure caused by the intrusion of moisture, scale, impurities, etc. Since the magnetic ring and the retaining sleeve are sequentially fitted onto the main shaft in a direction away from the control valve body, the magnetic ring can be replaced by removing the retaining sleeve without disassembling the entire control valve body, reducing maintenance difficulty.

[0016] 4. In this embodiment of the present invention, the main shaft is provided with a first straight section near the magnetic ring, and the inner wall of the magnetic ring includes a second straight section. The first straight section and the second straight section are provided in correspondence, which can play a role in preventing mistaken positioning. Only when the first straight section and the second straight section are provided in correspondence can the installation position of the magnetic ring and the main shaft be correctly matched, ensuring the uniqueness of the installation position of the magnetic ring and avoiding the problem of incorrect installation of the magnetic ring.

[0017] 5. In this embodiment of the invention, the control valve body is provided with a circuit box, and a circuit board is disposed inside the circuit box. The Hall sensor component is disposed on the circuit board. The circuit box can prevent electronic components such as the Hall sensor component from being corroded by moisture and impurities and from mechanical damage. The circuit board can be used to process Hall signals, suppress electrical noise interference, and improve the signal-to-noise ratio and detection reliability. Since the Hall sensor component and the circuit board are concentrated in the circuit box, the wiring is neat and standardized, which facilitates production assembly and subsequent fault repair.

[0018] 6. In this embodiment of the present invention, the drive assembly is disposed at one end of the eccentric shaft, and the magnetic component is disposed at the other end of the eccentric shaft. Since the drive assembly and the magnetic component are disposed at opposite ends of the eccentric shaft, the motor or hydraulic component of the drive assembly is far away from the Hall sensing area, avoiding interference from the power source to the magnetic field detection. The symmetrical layout at both ends also makes the eccentric shaft more evenly stressed, reducing mechanical deformation caused by long-term operation.

[0019] 7. In this embodiment of the invention, the axial direction of the eccentric shaft is perpendicular to the axial direction of the piston. The eccentric part is a cam, and the piston includes a transmission disc with a groove. The cam is disposed within the groove. Due to the use of a cam-groove mechanism, the axial direction of the eccentric shaft is perpendicular to the axial direction of the piston, thereby efficiently and reliably converting the rotational motion of the eccentric shaft into the linear reciprocating motion required by the piston. This transmission method has a compact structure, good rigidity, and large force transmission. The displacement and speed characteristics of the piston can be precisely controlled through the cam profile, resulting in a clear motion relationship and high repeatability, thus precisely controlling the piston stroke.

[0020] 8. The groove shape provided in this embodiment of the utility model is annular, comprising two symmetrical semicircular arc segments and two parallel straight line segments disposed between the semicircular arc segments. The semicircular arc segments and the straight line segments are smoothly connected. The cam shape is disc-shaped, and the diameter of the semicircular arc segment is greater than or equal to the diameter of the cam. Because the groove is composed of symmetrical semicircular arc segments and parallel straight line segments smoothly connected, the contact point changes continuously when the disc-shaped cam moves within it, resulting in a smoother transition and avoiding impact, vibration, or jamming caused by discontinuous movement. When the diameter of the semicircular arc segment is greater than the diameter of the cam, it can provide the necessary movement clearance, thereby allowing for certain manufacturing and assembly tolerances. When the diameter of the semicircular arc segment is equal to the diameter of the cam, it can ensure stable contact between the cam and the groove wall in the straight line segment area, resulting in smooth and reliable transmission. The straight line segment design allows the contact between the cam and the groove to provide more direct thrust or constraint force at critical positions of the piston stroke, such as switching points or extreme positions.

[0021] 9. In this embodiment of the invention, the control valve body has a guide groove corresponding to the piston's movement direction, and the piston is provided with a guide block, which is slidably connected to the guide groove. The sliding fit between the guide block and the guide groove strictly restricts the piston to move linearly in a predetermined direction, preventing any rotation or wobbling of the piston, which helps to improve the sealing performance and switching accuracy of the soft water valve; at the same time, it effectively reduces the frictional resistance during piston movement, reduces wear, and improves service life and smoothness of movement.

[0022] 10. The water softener provided in this embodiment of the present invention has the same beneficial effects as the water softener valve described above, and will not be repeated here. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the soft water valve provided in the first embodiment of this utility model.

[0025] Figure 2 This is an exploded view of a portion of the structure of the soft water valve provided in the first embodiment of this utility model.

[0026] Figure 3 This is an exploded view of the piston, eccentric shaft, and control valve body of the soft water valve provided in the first embodiment of this utility model.

[0027] Figure 4This is a cross-sectional structural diagram of a portion of the soft water valve provided in the first embodiment of this utility model.

[0028] Figure 5 This is a schematic diagram of the planar structure of the piston and eccentric shaft of the soft water valve provided in the first embodiment of this utility model.

[0029] Figure 6 This is a structural block diagram of the water softener provided in the second embodiment of this utility model.

[0030] Explanation of reference numerals in the attached diagram: 1. Soft water valve; 10. Control valve body; 11. Drive assembly; 12. Eccentric shaft; 13. Piston; 14. Magnetic component; 15. Hall sensor assembly; 16. Sleeve; 17. Compression fitting; 18. Circuit box; 19. Guide groove; 20. Main valve body; 121. Main shaft; 122. Eccentric part; 131. Transmission disc; 132. Guide block; 141. Magnetic ring; 161. Accommodation space; 181. Circuit board; 1211. First straight section; 1221. Cam; 1311. Groove; 1312. Semi-circular arc section; 1313. Straight section; 1411. Second straight section; 100. Soft water machine. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0032] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0033] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0034] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0035] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0036] Please combine Figures 1 to 4 The first embodiment of this utility model provides a soft water valve 1, which includes a control valve body 10, a drive assembly 11, an eccentric shaft 12, and a piston 13. The eccentric shaft 12 passes through the control valve body 10, and the drive assembly 11 is connected to the eccentric shaft 12 in a driving connection. The eccentric shaft 12 includes a main shaft portion 121 and an eccentric portion 122. The main shaft portion 121 rotates around the axis of the eccentric shaft 12, and the eccentric portion 122 is eccentrically arranged relative to the main shaft portion 121. The piston 13 is connected to the eccentric portion 122 in a driving connection. A magnetic element 14 is provided on the main shaft portion 121, and a Hall sensor assembly 15 corresponding to the magnetic element 14 is provided on the control valve body 10. The magnetic element 14 has different magnetic induction intensities in different directions perpendicular to the axial direction of the eccentric shaft 12.

[0037] Understandably, since the drive assembly 11 is connected to the eccentric shaft 12 and the piston 13 is connected to the eccentric part 122, and the eccentric part 122 is part of the eccentric setting of the main shaft part 121, when the drive assembly 11 drives the eccentric shaft 12 to rotate, the eccentric part 122 drives the piston 13 to change position to switch different water flow channels. Compared to traditional soft water valves that use multiple spaced magnets or Hall sensors for position detection, which are prone to magnetic field interference, this technical solution uses a magnetic component 14 on the main shaft 121. The difference in magnetic induction intensity in different directions along the vertical axis is used by the Hall sensing assembly 15 for detection. This reduces the number of magnetic field sources and significantly lowers the risk of magnetic field interference. The Hall sensing assembly 15 detects the intensity of a single magnetic field source, rather than identifying multiple discrete magnetic field switching signals, thus exhibiting stronger anti-interference capabilities and effectively reducing the impact of magnetic field interference. The magnetic induction intensity of the magnetic component 14 changes continuously with the angle. The Hall sensing assembly 15 can achieve stepless angle recognition by detecting the continuous difference in magnetic field intensity, thereby accurately determining the position of the piston 13. This improves the accuracy and reliability of piston 13 position detection under the harsh operating conditions of the soft water valve 1. Furthermore, it simplifies the structure and number of the magnetic component 14 and the Hall sensing assembly 15, meaning a significant reduction in the number of components requiring installation and sealing. This lowers the mechanical failure rate caused by improper installation or seal failure, and reduces maintenance costs.

[0038] It should be noted that the Hall sensing assembly 15 includes a Hall element, and its working principle is based on the Hall effect. Since the magnetic element 14 has different magnetic induction intensities in different directions perpendicular to the eccentric shaft 12, when the magnetic element 14 rotates with the main shaft 121, the distance between the magnetic element 14 and the Hall sensing assembly 15 remains constant, but the magnetic induction intensities of the magnetic element 14 at different rotation angles are different, causing the magnetic field strength to fluctuate periodically. The Hall voltage output by the Hall sensing assembly 15 will fluctuate synchronously with the magnetic field strength. Therefore, when the drive assembly 11 drives the eccentric shaft 12 to rotate, the magnetic element 14 with its directional magnetic field difference also rotates, allowing the Hall sensing assembly 15 to detect changes in magnetic field strength. By analyzing the corresponding output signal of the Hall sensing assembly 15, the rotation angle position of the main shaft 121 can be accurately determined, thereby determining the corresponding piston 13 movement position and achieving precise monitoring of the piston 13 movement position.

[0039] It should be noted that the control valve body 10 can be connected to the main valve body 20, and the piston 13 is controlled to move through the drive component 11, so that the piston 13 moves relative to the control valve body 10 and the main valve body 20, thereby realizing the switching of different water circuits.

[0040] Please see Figure 2 Furthermore, the magnetic component 14 is a magnetic ring 141, which is sleeved on the main shaft portion 121.

[0041] Understandably, the magnetic ring 141 achieves precise positioning through varying magnetic induction intensities during a full rotation, which helps improve the anti-interference capability and accuracy of position detection. Furthermore, the sleeved design ensures that the magnetic ring 141 fits tightly against the outer surface of the spindle portion 121, preventing it from loosening or falling off due to vibration or temperature changes, thus providing greater structural stability. Compared to attaching multiple discrete magnetic components 14, the sleeved magnetic ring 141 is simpler in terms of process and reduces manufacturing and maintenance costs.

[0042] Please combine Figure 2 and Figure 4 Furthermore, a sleeve 16 is provided on the outside of the control valve body 10, and one end of the main shaft 121 near the magnetic ring 141 is disposed inside the sleeve 16. The soft water valve 1 also includes a retainer 17, which and the sleeve 16 enclose to form a receiving space 161. The magnetic ring 141 is disposed inside the receiving space 161, and the magnetic ring 141 and the retainer 17 are sequentially sleeved on the main shaft 121 in a direction away from the control valve body 10.

[0043] Understandably, this structure provides additional support and protection for the ends of the magnetic ring 141 and the main shaft portion 121, enhancing overall rigidity and further improving resistance to external impacts and vibrations. The receiving space 161 formed by the ferrule 17 and the sleeve 16 reduces the risk of magnetic ring 141 failure due to the intrusion of moisture, scale, impurities, etc. Since the magnetic ring 141 and the ferrule 17 are sequentially fitted onto the main shaft portion 121 in a direction away from the control valve body 10, the magnetic ring 141 can be replaced by removing the ferrule 17 without disassembling the entire control valve body 10, reducing maintenance difficulty.

[0044] Please see Figure 2 Furthermore, the main shaft 121 is provided with a first straight section 1211 near the magnetic ring 141, and the inner wall of the magnetic ring 141 includes a second straight section 1411, with the first straight section 1211 and the second straight section 1411 being provided correspondingly.

[0045] Understandably, the corresponding setting of the first straight section 1211 and the second straight section 1411 can play a role in preventing mistaken positioning. Only when the first straight section 1211 and the second straight section 1411 are set in a corresponding manner can the installation position of the magnetic ring 141 and the spindle part 121 be correctly matched, ensuring the uniqueness of the installation position of the magnetic ring 141 and avoiding the problem of incorrect installation of the magnetic ring 141.

[0046] Optionally, the end of the spindle 121 near the magnetic ring 141 is curved except for the first straight section 1211, and the inner wall of the magnetic ring 141 is curved except for the second straight section 1411, so that the end of the spindle 121 near the magnetic ring 141 and the inner wall of the magnetic ring 141 are both "D" shaped, which helps to achieve accurate installation quickly and easily, and plays a role in preventing mistaken positioning.

[0047] Please continue reading. Figure 2 Furthermore, a circuit box 18 is provided on the control valve body 10, and a circuit board 181 is provided inside the circuit box 18. The Hall sensor component 15 is provided on the circuit board 181.

[0048] Understandably, the circuit box 18 protects electronic components such as the Hall sensor 15 from moisture, impurities, and mechanical damage. The circuit board 181 can be used to process Hall signals, suppress electrical noise interference, and improve the signal-to-noise ratio and detection reliability. Since the Hall sensor 15 and the circuit board 181 are concentrated in the circuit box 18, the wiring is neat and standardized, facilitating production assembly and subsequent fault repair.

[0049] Please combine Figure 2 and Figure 4 Furthermore, the drive assembly 11 is disposed at one end of the eccentric shaft 12, and the magnetic element 14 is disposed at the other end of the eccentric shaft 12.

[0050] Understandably, since the drive assembly 11 and the magnetic component 14 are placed at opposite ends of the eccentric shaft 12, the motor or hydraulic component of the drive assembly 11 is far away from the Hall sensing area, avoiding interference from the power source to the magnetic field detection. The symmetrical layout at both ends also makes the eccentric shaft 12 more evenly stressed, reducing mechanical deformation caused by long-term operation.

[0051] Please combine Figure 3 and Figure 4 Furthermore, the axial direction of the eccentric shaft 12 is perpendicular to the axial direction of the piston 13. The eccentric part 122 is a cam 1221. The piston 13 includes a transmission disk 131. The transmission disk 131 has a groove 1311. The cam 1221 is disposed in the groove 1311.

[0052] Understandably, due to the use of the cam 1221-groove 1311 mechanism, the axial direction of the eccentric shaft 12 is perpendicular to the axial direction of the piston 13, thereby efficiently and reliably converting the rotational motion of the eccentric shaft 12 into the linear reciprocating motion required by the piston 13. This transmission method has a compact structure, good rigidity, and large force transmission capacity. The displacement and speed characteristics of the piston 13 can be precisely controlled through the profile of the cam 1221, with clear motion relationships and high repeatability, thus accurately controlling the stroke of the piston 13.

[0053] Please combine Figure 3 and Figure 5 Furthermore, the groove 1311 is annular in shape and includes two symmetrical semicircular segments 1312 and two parallel straight segments 1313 disposed between the semicircular segments 1312. The semicircular segments 1312 and the straight segments 1313 are smoothly connected. The cam 1221 is disc-shaped, and the diameter of the semicircular segments 1312 is greater than or equal to the diameter of the cam 1221.

[0054] Understandably, the diameter of the semicircular arc segment 1312 is defined as D, and the diameter of the cam 1221 is defined as r, where D ≥ r. Since the groove 1311 is smoothly connected by symmetrical semicircular arc segments 1312 and parallel straight line segments 1313, the contact point changes continuously and the transition is relatively smooth when the disc-shaped cam 1221 moves within it, avoiding impacts, vibrations, or jamming caused by discontinuous motion. When the diameter of the semicircular arc segment 1312 is larger than the diameter of the cam 1221, it provides the necessary movement clearance, thus allowing for certain manufacturing and assembly tolerances. When the diameter of the semicircular arc segment 1312 is equal to the diameter of the cam 1221, it ensures stable contact between the cam 1221 and the wall of the groove 1311 in the straight line segment 1313 region, resulting in smooth and reliable transmission. The design of the straight line segment 1313 allows the contact between the cam 1221 and the groove 1311 to provide more direct thrust or constraint force at critical positions in the piston 13 stroke, such as switching points or extreme positions.

[0055] Please see Figure 3 Furthermore, the control valve body 10 has a guide groove 19 corresponding to the movement direction of the piston 13, and the piston 13 is provided with a guide block 132, which is slidably connected to the guide groove 19.

[0056] Understandably, the sliding fit between the guide block 132 and the guide groove 19 strictly restricts the piston 13 to move linearly in a predetermined direction, preventing the piston 13 from rotating or wobbling, which helps to improve the sealing performance and switching accuracy of the soft water valve 1; at the same time, it effectively reduces the frictional resistance of the piston 13 during movement, reduces wear, and improves service life and smoothness of movement.

[0057] Please see Figure 6 The second embodiment of this utility model provides a water softener 100, which includes the water softener valve 1 of the first embodiment of this utility model.

[0058] Understandably, the water softener 100 has the same beneficial effects as the water softener valve 1 of the first embodiment of this utility model, and will not be described again here.

[0059] Compared with the prior art, the water softener valve and water softener of this utility model have the following advantages: 1. This utility model provides a soft water valve, which includes a control valve body, a drive assembly, an eccentric shaft, and a piston. The eccentric shaft passes through the control valve body, and the drive assembly is driven by the eccentric shaft. The eccentric shaft includes a main shaft portion and an eccentric portion. The main shaft portion rotates around the axis of the eccentric shaft, and the eccentric portion is eccentrically positioned relative to the main shaft portion. The piston is driven by the eccentric portion. A magnetic element is provided on the main shaft portion, and a Hall effect sensor corresponding to the magnetic element is provided on the control valve body. The magnetic element has different magnetic induction intensities in different directions perpendicular to the eccentric shaft axis. Because the drive assembly is driven by the eccentric shaft, and the piston is driven by the eccentric portion, and the eccentric portion is part of the eccentrically positioned main shaft portion, when the drive assembly drives the eccentric shaft to rotate, the eccentric portion drives the piston to change position, thereby switching different water flow channels. Compared to traditional soft water valves that use multiple spaced magnets or Hall effect sensors for position detection, which are prone to magnetic field interference, this technical solution uses a magnetic component on the main shaft. The difference in magnetic induction intensity along the vertical axis is used by the Hall effect sensor for detection, reducing the number of magnetic field sources and significantly lowering the risk of magnetic field interference. The Hall effect sensor detects the intensity of a single magnetic field source, rather than identifying multiple discrete magnetic field switching signals, thus exhibiting stronger anti-interference capabilities and effectively reducing the impact of magnetic field interference. The magnetic induction intensity of the magnetic component changes continuously with the angle; the Hall effect sensor can detect this continuous difference in magnetic field intensity to achieve stepless angle recognition, thereby accurately determining the piston position and improving the accuracy and reliability of piston position detection in the harsh operating conditions of the soft water valve. Furthermore, the simplified structure and number of magnetic components and Hall effect sensors mean a significant reduction in the number of parts that need to be installed and sealed, lowering the mechanical failure rate caused by improper installation or seal failure, and reducing maintenance costs.

[0060] 2. The magnetic component provided in this embodiment is a magnetic ring, which is sleeved on the main shaft. The magnetic ring achieves precise positioning through different magnetic induction intensities with each rotation, which helps improve the anti-interference capability and accuracy of position detection. Furthermore, the sleeved design ensures the magnetic ring fits tightly against the outer surface of the main shaft, preventing it from loosening or falling off due to vibration or temperature changes, thus providing stronger structural stability. Compared to attaching multiple discrete magnetic components, sleeved magnetic rings are simpler in process and reduce manufacturing and maintenance costs.

[0061] 3. In this embodiment of the invention, a sleeve is provided on the outer side of the control valve body. The end of the main shaft near the magnetic ring is located inside the sleeve. The soft water valve also includes a retaining sleeve. The retaining sleeve and the sleeve together form a receiving space, in which the magnetic ring is located. The magnetic ring and the retaining sleeve are sequentially fitted onto the main shaft in a direction away from the control valve body. This structure provides additional support and protection for the ends of the magnetic ring and the main shaft, enhancing overall rigidity and further improving resistance to external impacts and vibrations. The receiving space formed by the retaining sleeve and the sleeve reduces the risk of magnetic ring failure caused by the intrusion of moisture, scale, impurities, etc. Since the magnetic ring and the retaining sleeve are sequentially fitted onto the main shaft in a direction away from the control valve body, the magnetic ring can be replaced by removing the retaining sleeve without disassembling the entire control valve body, reducing maintenance difficulty.

[0062] 4. In this embodiment of the present invention, the main shaft is provided with a first straight section near the magnetic ring, and the inner wall of the magnetic ring includes a second straight section. The first straight section and the second straight section are provided in correspondence, which can play a role in preventing mistaken positioning. Only when the first straight section and the second straight section are provided in correspondence can the installation position of the magnetic ring and the main shaft be correctly matched, ensuring the uniqueness of the installation position of the magnetic ring and avoiding the problem of incorrect installation of the magnetic ring.

[0063] 5. In this embodiment of the invention, the control valve body is provided with a circuit box, and a circuit board is disposed inside the circuit box. The Hall sensor component is disposed on the circuit board. The circuit box can prevent electronic components such as the Hall sensor component from being corroded by moisture and impurities and from mechanical damage. The circuit board can be used to process Hall signals, suppress electrical noise interference, and improve the signal-to-noise ratio and detection reliability. Since the Hall sensor component and the circuit board are concentrated in the circuit box, the wiring is neat and standardized, which facilitates production assembly and subsequent fault repair.

[0064] 6. In this embodiment of the present invention, the drive assembly is disposed at one end of the eccentric shaft, and the magnetic component is disposed at the other end of the eccentric shaft. Since the drive assembly and the magnetic component are disposed at opposite ends of the eccentric shaft, the motor or hydraulic component of the drive assembly is far away from the Hall sensing area, avoiding interference from the power source to the magnetic field detection. The symmetrical layout at both ends also makes the eccentric shaft more evenly stressed, reducing mechanical deformation caused by long-term operation.

[0065] 7. In this embodiment of the invention, the axial direction of the eccentric shaft is perpendicular to the axial direction of the piston. The eccentric part is a cam, and the piston includes a transmission disc with a groove. The cam is disposed within the groove. Due to the use of a cam-groove mechanism, the axial direction of the eccentric shaft is perpendicular to the axial direction of the piston, thereby efficiently and reliably converting the rotational motion of the eccentric shaft into the linear reciprocating motion required by the piston. This transmission method has a compact structure, good rigidity, and large force transmission. The displacement and speed characteristics of the piston can be precisely controlled through the cam profile, resulting in a clear motion relationship and high repeatability, thus precisely controlling the piston stroke.

[0066] 8. The groove shape provided in this embodiment of the utility model is annular, comprising two symmetrical semicircular arc segments and two parallel straight line segments disposed between the semicircular arc segments. The semicircular arc segments and the straight line segments are smoothly connected. The cam shape is disc-shaped, and the diameter of the semicircular arc segment is greater than or equal to the diameter of the cam. Because the groove is composed of symmetrical semicircular arc segments and parallel straight line segments smoothly connected, the contact point changes continuously when the disc-shaped cam moves within it, resulting in a smoother transition and avoiding impact, vibration, or jamming caused by discontinuous movement. When the diameter of the semicircular arc segment is greater than the diameter of the cam, it can provide the necessary movement clearance, thereby allowing for certain manufacturing and assembly tolerances. When the diameter of the semicircular arc segment is equal to the diameter of the cam, it can ensure stable contact between the cam and the groove wall in the straight line segment area, resulting in smooth and reliable transmission. The straight line segment design allows the contact between the cam and the groove to provide more direct thrust or constraint force at critical positions of the piston stroke, such as switching points or extreme positions.

[0067] 9. In this embodiment of the invention, the control valve body has a guide groove corresponding to the piston's movement direction, and the piston is provided with a guide block, which is slidably connected to the guide groove. The sliding fit between the guide block and the guide groove strictly restricts the piston to move linearly in a predetermined direction, preventing any rotation or wobbling of the piston, which helps to improve the sealing performance and switching accuracy of the soft water valve; at the same time, it effectively reduces the frictional resistance during piston movement, reduces wear, and improves service life and smoothness of movement.

[0068] 10. The water softener provided in this embodiment of the present invention has the same beneficial effects as the water softener valve described above, and will not be repeated here.

[0069] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A soft water valve, characterized in that: The soft water valve includes a control valve body, a drive assembly, an eccentric shaft, and a piston. The eccentric shaft passes through the control valve body, and the drive assembly is throttle-connected to the eccentric shaft. The eccentric shaft includes a main shaft portion and an eccentric portion. The main shaft portion rotates around the axis of the eccentric shaft, and the eccentric portion is eccentrically positioned relative to the main shaft portion. The piston is throttle-connected to the eccentric portion. A magnetic element is provided on the main shaft portion, and a Hall effect sensor corresponding to the magnetic element is provided on the control valve body. The magnetic element has different magnetic induction intensities in different directions perpendicular to the eccentric shaft axis.

2. The soft water valve as described in claim 1, characterized in that: The magnetic component is a magnetic ring, which is sleeved on the main shaft.

3. The soft water valve as described in claim 2, characterized in that: A sleeve is provided on the outside of the control valve body. One end of the main shaft near the magnetic ring is disposed inside the sleeve. The soft water valve also includes a retainer. The retainer and the sleeve enclose a receiving space. The magnetic ring is disposed in the receiving space. The magnetic ring and the retainer are sequentially sleeved on the main shaft in a direction away from the control valve body.

4. The soft water valve as described in claim 2, characterized in that: The main shaft has a first straight section near the magnetic ring, and the inner wall of the magnetic ring includes a second straight section, with the first straight section and the second straight section corresponding to each other.

5. The soft water valve as described in claim 1, characterized in that: The control valve body is provided with a circuit box, the circuit box is provided with a circuit board, and the Hall sensor component is provided on the circuit board.

6. The soft water valve as described in claim 1, characterized in that: The drive assembly is located at one end of the eccentric shaft, and the magnetic component is located at the other end of the eccentric shaft.

7. The soft water valve as described in claim 1, characterized in that: The axial direction of the eccentric shaft is perpendicular to the axial direction of the piston. The eccentric part is a cam. The piston includes a transmission disk with a groove. The cam is disposed in the groove.

8. The soft water valve as described in claim 7, characterized in that: The groove is annular in shape and includes two symmetrical semicircular segments and two parallel straight segments disposed between the semicircular segments. The semicircular segments and the straight segments are smoothly connected. The cam is disc-shaped, and the diameter of the semicircular segments is greater than or equal to the diameter of the cam.

9. The soft water valve as described in claim 1, characterized in that: The control valve body has a guide groove corresponding to the direction of piston movement, and the piston is provided with a guide block, which is slidably connected to the guide groove.

10. A water softener, characterized in that: The water softener includes a water softener valve as described in any one of claims 1 to 9.

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