Driving mechanism of soft water valve, soft water valve and water softener

Abstract

The utility model relates to the technical field of water treatment equipment, in particular to a driving mechanism of a soft water valve and the soft water valve. The driving mechanism of the soft water valve comprises a motor, a lead screw assembly, a triggering assembly and an induction assembly, the lead screw assembly comprises a lead screw and a lead screw sleeve, the motor can drive the lead screw to rotate through a transmission assembly, the lead screw sleeve is arranged on the lead screw in a sleeving mode, and the lead screw sleeve can be driven by the lead screw to do linear motion; the trigger assembly is used for being triggered when the lead screw sleeve starts to move. The sensing assembly is used for sensing the movement amount of the lead screw sleeve. When the lead screw sleeve starts to move, the trigger assembly is triggered and outputs an electric signal, and at the moment, the position of the lead screw sleeve is marked as a zero reference position; after the triggering assembly is triggered, the sensing assembly senses the movement amount of the lead screw sleeve, so that the position of the valve element in the valve body is obtained, and then switching of the channels is achieved. And through the trigger assembly and the induction assembly, the position of the lead screw sleeve can be accurately detected.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, in particular to a driving mechanism of a soft water valve, a soft water valve and a water softener. Background Art

[0002] The water softener uses resin to remove calcium and magnesium ions from the water, reducing the hardness of the water and softening the water quality. The core component of the water softener is the water softener valve. The main function of the water softener valve is to switch between different water routes such as water purification, backwashing, salt absorption regeneration, forward washing and water injection. The driving mechanism of the water softener valve of the existing piston water softener uses a DC motor to drive the gear, and the gear drives the movement of the screw. Since the DC motor cannot detect the position, the water softener valve uses a stall current method when performing zero position calibration. Due to the influence of the transmission efficiency of the mechanical structure, there must be a certain error pulse when using the stall current for calibration. Utility Model Content

[0003] The utility model aims to provide a driving mechanism of a soft water valve, a soft water valve and a water softener, which can accurately detect the position of a screw rod sleeve.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The driving mechanism of the soft water valve includes:

[0006] Motor;

[0007] The screw assembly includes a screw and a screw sleeve, wherein the motor can drive the screw to rotate through the transmission assembly, the screw sleeve is sleeved on the screw, and the screw sleeve can be driven by the screw to perform linear motion;

[0008] A trigger assembly, used to be triggered when the lead screw sleeve starts to move;

[0009] The sensing component is used to sense the movement of the screw sleeve.

[0010] As a preferred technical solution for the driving mechanism of the soft water valve, the trigger assembly includes a micro switch and a trigger member, the micro switch is fixedly arranged, and the trigger member is arranged on the screw sleeve. When the screw sleeve starts to move, the trigger member can trigger the micro switch.

[0011] As a preferred technical solution for the driving mechanism of the soft water valve, the triggering member is a triggering protrusion arranged on the screw sleeve.

[0012] As a preferred technical solution for the driving mechanism of the soft water valve, the transmission assembly includes a driving gear and a driven gear, the driving gear is arranged on the output shaft of the motor, the driven gear is meshed with the driving gear, and the screw rod is fixedly connected to the driven gear.

[0013] As a preferred technical solution for the driving mechanism of the soft water valve, the sensing component includes a light sensor and a plurality of reflective sheets. The light sensor is fixedly arranged, and the plurality of reflective sheets are arranged on the driven gear, and the plurality of reflective sheets are distributed in a circle around the axis of the driven gear. The plurality of reflective sheets will pass through the light sensor in sequence when rotating with the driven gear.

[0014] As a preferred technical solution for the driving mechanism of the soft water valve, each of the reflective sheets is radially distributed along the radial direction of the driven gear.

[0015] As a preferred technical solution for the driving mechanism of the soft water valve, a screw sleeve is threadedly connected to the screw rod, a screw sleeve hole is provided on the screw sleeve, the screw sleeve extends into the screw sleeve hole, and the screw rod drives the screw sleeve to perform linear motion through the screw sleeve.

[0016] As a preferred technical solution for the driving mechanism of the soft water valve, it also includes a switching circuit board, which is electrically connected to the main control board of the soft water valve, and the trigger component and the sensing component are both electrically connected to the switching circuit board.

[0017] As a preferred technical solution for the driving mechanism of the soft water valve, it also includes a shell, and the motor, the transmission component, the trigger component and the sensing component are all arranged in the shell.

[0018] As a preferred technical solution for the driving mechanism of the soft water valve, the housing comprises a rear shell and a front cover, and the rear shell is detachably connected to the front cover.

[0019] A soft water valve comprises a valve body, a valve core and a driving mechanism of the soft water valve as described in any of the above schemes, wherein the valve body has a plurality of channels, the valve core is movably arranged in the valve body, the screw sleeve is connected to the valve core, and the driving mechanism is used to drive the valve core to move so that different channels are connected or closed.

[0020] A water softener comprises the water softening valve as described above.

[0021] Beneficial effects of the utility model:

[0022] The embodiment of the utility model provides a driving mechanism of a soft water valve, including a motor, a transmission component, a screw rod component, a trigger component and a sensing component. The motor can drive the screw rod to rotate through the transmission component, the screw rod can drive the screw rod sleeve to make a linear motion, and the screw rod sleeve can drive the valve core to move to control the opening and closing of multiple channels in the valve body. When the screw rod sleeve starts to move, the trigger component is triggered, and the trigger component outputs an electrical signal, at which time the position of the screw rod sleeve is marked as the zero reference position; after the trigger component is triggered, the sensing component senses the movement of the screw rod sleeve, thereby obtaining the position of the valve core in the valve body, and then realizing the switching of the channel. Through the trigger component and the sensing component, the position of the screw rod sleeve can be accurately detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a soft water valve provided by an embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the soft water valve provided by the embodiment of the utility model after the front cover is removed;

[0025] Figure 3 It is a structural schematic diagram of a driving mechanism of a soft water valve provided in an embodiment of the utility model;

[0026] Figure 4 It is a cross-sectional view of a driving mechanism of a soft water valve provided in an embodiment of the utility model.

[0027] In the figure:

[0028] 10. Valve body; 20. Shell; 21. Rear shell; 22. Front cover; 30. Driving mechanism; 31. Motor; 311. Output shaft; 32. Driving gear; 33. Driven gear; 34. Screw; 35. Screw sleeve; 36. Screw sleeve; 37. Trigger assembly; 371. Micro switch; 372. Trigger member; 38. Induction assembly; 381. Light sensor; 382. Reflector; 39. Adapter circuit board. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] The utility model provides a water softener, including a water softener valve, a salt box and a resin tank, wherein the salt box contains salt particles (such as sodium chloride particles), the resin tank contains ion exchange resin, the water softener valve is connected to the resin tank, and the water inlet, water outlet, drain outlet and salt box are all connected to the resin tank via the water softener valve. The water softener valve constitutes the core component of the water system of the water softener, and the water flow direction is switched and the water is opened and closed by the water softener valve, so that the water softener can realize normal operation, water injection + salt dissolution, salt absorption (regeneration), backwashing, backwashing, forward flushing and other functions.

[0037] like Figures 1 to 4 As shown, the soft water valve includes a valve body 10, a valve core and a driving mechanism 30. The valve body 10 has multiple channels. The valve core is movably connected to the valve body 10 and moves relative to the valve body 10 to control the opening and closing of multiple channels, so that the soft water valve is in different working positions. The driving mechanism 30 is used to drive the valve core to move relative to the valve body 10. Specifically, the valve body 10 can have a water inlet channel, a forward washing channel, a backwashing channel, a jet channel, a salt absorption channel, a soft inlet channel, a soft outlet channel, a wastewater channel, etc. The driving mechanism 30 controls the movement of the valve core to connect or close different channels, so that the soft water valve has different working states such as working, water injection, salt absorption, forward washing, and backwashing.

[0038] Reference Figures 2 to 4 In this embodiment, the driving mechanism 30 includes a housing 20, a motor 31, a transmission assembly, a screw assembly, a trigger assembly 37 and a sensing assembly 38. The housing 20 is connected to the valve body 10. The motor 31 and the transmission assembly are both arranged in the housing 20. The screw assembly includes a screw 34 and a screw sleeve 36. The motor 31 can drive the screw 34 to rotate through the transmission assembly. The screw sleeve 36 is sleeved on the screw 34. The screw sleeve 36 can be driven by the screw 34 to make a linear motion. In this embodiment, a screw sleeve 35 is threadedly connected to the screw 34. The screw sleeve 36 is provided with a screw sleeve hole. The screw sleeve 35 extends into the screw sleeve hole. The screw 34 drives the screw sleeve 36 to make a linear motion through the screw sleeve 35. The screw sleeve 36 is connected to the valve core, and the screw sleeve 36 can drive the valve core to move. The trigger assembly 37 is used to be triggered when the screw sleeve 36 starts to move; the sensing assembly 38 is used to sense the movement amount of the screw sleeve 36.

[0039] When the screw sleeve 36 starts to move, the trigger component 37 is triggered, and the trigger component 37 outputs an electrical signal, at which time the position of the screw sleeve 36 is marked as the zero reference position; after the trigger component 37 is triggered, the sensing component 38 senses the movement of the screw sleeve 36, thereby obtaining the position of the valve core in the valve body, and then realizing the switching of the channel. Through the trigger component 37 and the sensing component 38, the position of the screw sleeve 36 can be accurately detected.

[0040] The trigger assembly 37 includes a micro switch 371 and a trigger member 372. The micro switch 371 is fixedly arranged in the housing 20, and the trigger member 372 is arranged on the screw sleeve 36. When the screw sleeve 36 starts to move, the trigger member 372 can trigger the micro switch 371, and the micro switch 371 will output an electrical signal after being triggered. The trigger member 372 can act on the action reed of the micro switch 371, so that the fixed contact at its end is quickly connected or disconnected with the moving contact. The micro switch 371 has a small contact spacing, a short action stroke, a small pressing force, and a rapid connection and disconnection. In this embodiment, the trigger member 372 is a trigger protrusion arranged on the screw sleeve 36, and the trigger protrusion can be an integral structure with the screw sleeve 36, or a separate structure with the screw sleeve 36.

[0041] The transmission assembly includes a driving gear 32 and a driven gear 33 . The driving gear 32 is disposed on the output shaft 311 of the motor 31 . The driven gear 33 meshes with the driving gear 32 . The screw rod 34 is fixedly connected to the driven gear 33 . The screw rod 34 can be driven to rotate by the driven gear 33 .

[0042] The sensing assembly 38 includes a light sensor 381 and a plurality of reflectors 382. The light sensor 381 is fixedly disposed in the housing 20. The plurality of reflectors 382 are disposed on the driven gear 33, and the plurality of reflectors 382 are circumferentially distributed around the axis of the driven gear 33. When the driven gear 33 rotates, the plurality of reflectors 382 rotates with the driven gear 33. When the plurality of reflectors 382 rotate with the driven gear 33, they will pass through the light sensor 381 in sequence. The light sensor 381 will scan the reflectors 382 passing through it and measure the pulses. Finally, the rotation angle of the driven gear 33 is obtained by the number of pulses, and then the axial displacement of the screw sleeve 36 is calculated according to the rotation angle of the driven gear 33. Preferably, each reflector 382 is radially distributed along the radial direction of the driven gear 33 to increase the coverage area of ​​the reflector 382 and ensure that it can be scanned by the light sensor 381.

[0043] The motor 31 can drive the driven gear 33 to rotate through the driving gear 32, and the driven gear 33 can drive the screw 34 to rotate. The screw 34 can drive the screw sleeve 36 to make a linear motion through the screw sleeve 35, and the screw sleeve 36 can drive the valve core to move to control the opening and closing of multiple channels in the valve body 10. When the driven gear 33 starts to rotate (that is, when the screw sleeve 36 starts to move), the trigger component 37 is triggered, and the trigger component 37 outputs an electrical signal, at which time the position of the driven gear 33 is marked as the zero reference position; after the trigger component 37 is triggered, the sensing component 38 senses the pulse signal of the driven gear 33, and the rotation angle of the driven gear 33 is obtained through the pulse signal of the driven gear 33, and the axial displacement of the screw sleeve 36 is calculated according to the rotation angle of the driven gear 33, so as to obtain the position of the valve core in the valve body 10, and then realize the switching of the channel. Through the trigger component 37 and the sensing component 38, the position of the screw sleeve 36 can be accurately detected.

[0044] The driving mechanism 30 of the soft water valve provided in this embodiment also includes a switching circuit board 39, which is electrically connected to the main control board of the soft water valve through a wiring harness. The signal line of the micro switch 371 and the signal line of the light sensor 381 are both plugged into the switching circuit board 39, thereby realizing signal communication between the internal electrical components of the driving mechanism 30.

[0045] In this embodiment, the housing 20 includes a rear housing 21 and a front cover 22. The rear housing 21 and the front cover 22 are buckled together to form a receiving space. The motor 31, the transmission assembly, the trigger assembly 37 and the sensing assembly 38 are all arranged in the receiving space to protect the motor 31, the transmission assembly, the trigger assembly 37 and the sensing assembly 38. Preferably, the rear housing 21 and the front cover 22 are detachably connected to facilitate the disassembly and maintenance of the driving mechanism 30 of the soft water valve.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A driving mechanism for a soft water valve, characterized in that: include: Motor (31); A screw assembly, comprising a screw (34) and a screw sleeve (36), wherein the motor (31) can drive the screw (34) to rotate through the transmission assembly, the screw sleeve (36) is sleeved on the screw (34), and the screw sleeve (36) can be driven by the screw (34) to perform linear motion; A trigger assembly (37) configured to be triggered when the screw sleeve (36) starts to move; The sensing component (38) is used to sense the movement of the screw sleeve (36).

2. The driving mechanism of the soft water valve according to claim 1, characterized in that: The trigger assembly (37) comprises a micro switch (371) and a trigger member (372); the micro switch (371) is fixedly arranged; the trigger member (372) is arranged on the screw sleeve (36); when the screw sleeve (36) starts to move, the trigger member (372) can trigger the micro switch (371).

3. The driving mechanism of the soft water valve according to claim 2, characterized in that: The trigger member (372) is a trigger protrusion arranged on the screw sleeve (36).

4. The driving mechanism of the soft water valve according to claim 1, characterized in that: The transmission assembly comprises a driving gear (32) and a driven gear (33); the driving gear (32) is arranged on an output shaft (311) of the motor (31); the driven gear (33) is meshed with the driving gear (32); and the screw rod (34) is fixedly connected to the driven gear (33).

5. The driving mechanism of the soft water valve according to claim 4, characterized in that: The sensing component (38) comprises a light sensor (381) and a plurality of reflective sheets (382), wherein the light sensor (381) is fixedly arranged, and the plurality of reflective sheets (382) are all arranged on the driven gear (33), and the plurality of reflective sheets (382) are distributed in a circular pattern around the axis of the driven gear (33), and the plurality of reflective sheets (382) will pass through the light sensor (381) in sequence when rotating with the driven gear (33).

6. The driving mechanism of the soft water valve according to claim 5, characterized in that: Each of the reflective sheets (382) is distributed radially along the radial direction of the driven gear (33).

7. The driving mechanism of a soft water valve according to any one of claims 1 to 6, characterized in that: It also includes a switching circuit board (39), the switching circuit board (39) is electrically connected to the main control board of the soft water valve, and the trigger component (37) and the sensing component (38) are both electrically connected to the switching circuit board (39).

8. The driving mechanism of a soft water valve according to any one of claims 1 to 6, characterized in that: It also comprises a housing (20), wherein the motor (31), the transmission component, the trigger component (37) and the induction component (38) are all arranged in the housing (20).

9. A soft water valve, characterized in that: The invention comprises a valve body (10), a valve core and a driving mechanism (30) of a soft water valve as claimed in any one of claims 1 to 8, wherein the valve body (10) has a plurality of channels, the valve core is movably arranged in the valve body (10), the screw sleeve (36) is connected to the valve core, and the driving mechanism (30) is used to drive the valve core to move so as to connect or close different channels.

10. A water softener, characterized in that: Comprising the soft water valve as claimed in claim 9.

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