Lower water distributor and water softener

Abstract

The lower water distributor comprises a water distributor seat, a central pipe, a plurality of flow channel extension pieces and a driving mechanism, one end of the central pipe is connected to the water distributor seat, the plurality of flow channel extension pieces are spliced end to end and are arranged around the peripheral side of the water distributor seat, one end of each flow channel extension piece is hinged to the peripheral surface of the water distributor seat, and the other end of each flow channel extension piece is hinged to the driving mechanism. The other end of each flow channel extension piece can rotate in the circumferential direction of the water distributor base, a plurality of water passing holes are formed in the surface of each flow channel extension piece, the driving mechanism comprises elastic elements and traction pieces, the elastic elements and the flow channel extension pieces are arranged in a one-to-one correspondence mode, and the two ends of each elastic element are connected to the corresponding flow channel extension piece and the water distributor base respectively. The flow channel extension parts are arranged in the center pipe so that the flow channel extension parts can be in an unfolded state or a folded state, one end of the traction part is connected to each flow channel extension part, the other end of the traction part penetrates through an inner cavity of the center pipe and extends to the upper end of the center pipe, and the traction part is used for pulling the flow channel extension parts so that all the flow channel extension parts can be unfolded or folded synchronously.

Description

Technical Field

[0001] This utility model relates to a water distributor and a water softener. Background Technology

[0002] Water softeners use softening resin to soften tap water. After a certain amount of tap water passes through, the softening capacity of the resin decreases, requiring regeneration. During regeneration, regenerated brine flows through a central pipe into the lower distributor. The lower distributor has many fine holes through which the brine flows out, regenerating the softening resin in the resin tank. Currently, the resin tank is limited by the structure of the water softener's valve head, and the inlet size is generally much smaller than the tank's diameter. To allow the lower distributor to fit into the resin tank through the inlet, its size is designed to be relatively small. During regeneration, due to the small size of the lower distributor, the brine flow is mainly concentrated in the central area of ​​the resin tank, resulting in poor regeneration of resin further away from the center. This wastes brine and leads to poor softening performance of the regenerated resin. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects in the prior art and provide a water distributor and a water softener.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A lower water distributor includes a water distributor base, a central tube, flow channel extensions, and a driving mechanism. One end of the central tube is connected to the water distributor base. Multiple flow channel extensions are joined end-to-end and arranged around the periphery of the water distributor base. One end of each flow channel extension is hinged to the outer circumferential surface of the water distributor base, and the other end of each flow channel extension is rotatable along the circumferential direction of the water distributor base. The surface of each flow channel extension has several water passage holes, which connect to the central tube through the inner cavity of the flow channel extension, the inner cavity of the water distributor base, and the central tube. The inner lumen of the cardiac tube is connected. The driving mechanism includes an elastic element and a traction member. The elastic element is arranged in a one-to-one correspondence with the flow channel extension member. The two ends of the elastic element are respectively connected to the flow channel extension member and the water distributor seat, so that the flow channel extension member is in an unfolded state or a retracted state. One end of the traction member is connected to each of the flow channel extension members, and the other end of the traction member passes through the inner lumen of the central tube and extends to the upper end of the central tube. The traction member is used to pull the flow channel extension members so that all the flow channel extension members unfold or retract synchronously.

[0006] In this design, each flow channel extension of the lower water distributor is hinged to the water distributor base. Each flow channel extension can rotate circumferentially along the water distributor base. Multiple flow channel extensions are joined end-to-end and arranged around the perimeter of the water distributor base, facilitating the retraction of the water distributor base and flow channel extensions, reducing the volume of the lower water distributor. This allows the lower water distributor to be inserted into the resin tank through its narrow inlet. After the lower water distributor is placed in the resin tank, a drive mechanism is used to extend the flow channel extensions, extending the flow channels on the water distributor base to a greater distance and increasing the distribution area of ​​the lower water distributor. The state switching of the flow channel extensions can be achieved by pulling a traction component, which rotates the flow channel extension. When the traction component is released, the flow channel extension returns to its initial position under the action of an elastic element, realizing synchronous expansion or retraction.

[0007] After the lower water distributor is deployed, during regeneration, the water passage holes of the extended flow channel allow brine to flow into the resin away from the central area, saving brine and improving the regeneration effect. During water production, the extended flow channel is laid horizontally at the bottom of the resin tank, increasing the raw water softening path, prolonging the softening process, and improving the softening effect.

[0008] The initial state of the flow channel extension is determined by the force applied to it by the elastic element. When the traction element is pulled, the force applied to the flow channel extension by the traction element is opposite to the force applied to it by the elastic element. This arrangement facilitates switching the state of the flow channel extension. In one alternative, the elastic element can apply a force to keep the flow channel extension in the retracted state. In another alternative, the elastic element can apply a force to keep the flow channel extension in the extended state.

[0009] Preferably, the outer wall of the water distributor seat has a mounting portion protruding in the radial direction, the flow channel extension includes a body portion, a force-applying portion and a hinge shaft, the force-applying portion is set at an angle to the body portion, the body portion is hinged to the water distributor seat by the hinge shaft provided on the mounting portion, and the force-applying portion is located inside the water distributor seat.

[0010] In this design, the mounting section is used to house the hinge shaft. Given a fixed outer diameter of the lower water distributor, the mounting section protrudes from the outer wall of the water distributor seat. The main body of the flow channel extension is mounted on the mounting section via the hinge shaft, preventing interference between the flow channel extension and the water distributor seat during rotation and increasing the rotation angle of the flow channel extension. Simultaneously, the flow channel extension also overlaps with the water distributor seat, allowing for a larger inner cavity in the water distributor seat while accommodating the dimensions of the flow channel extension, thus maximizing the distribution area when the flow channel extension unfolds. The force-applying section is angled to the main body, facilitating the drive mechanism to drive the force-applying section, thereby enabling the main body to rotate around the hinge shaft. The angle between the force-applying section and the main body is preferably acute, right, or obtuse, so that the drive mechanism can apply a small driving force to the force-applying section within the water distributor seat to rotate the flow channel extension.

[0011] Preferably, the outer peripheral surface of the water distributor base has a mating interface, the flow channel extension has an opening, the mating interface is larger than the opening, the flow channel extension is installed on the mating interface, the opening communicates with the inner cavity of the water distributor base through the mating interface when the flow channel extension is unfolded, and the force-applying part can block part of the mating interface when the flow channel extension is unfolded, so as to prevent the inner cavity of the water distributor base from being directly connected to the outside.

[0012] In this design, the interface size is increased to allow the flow channel extension to be embedded deeper within the interface, resulting in a larger flow channel extension. This also prevents interference between the flow channel extension and the distributor seat during rotation, ensuring sufficient rotation space for the flow channel extension to achieve a larger distribution area. The force-applying part, in addition to cooperating with the traction component, also seals part of the interface to prevent resin particles from the resin tank from entering the distributor seat through the interface.

[0013] Preferably, the force-applying part is also used to abut against the inner wall of the water distributor seat, and the inner wall of the water distributor seat is used to limit the rotation angle of the flow channel extension.

[0014] In this design, the force-applying part abuts against the inner wall of the water distributor seat, keeping the flow channel extension at a preset rotation angle, ensuring that all flow channel extensions are in the extended state, and preventing the flow channel extensions from rotating excessively.

[0015] Preferably, the interface is provided with a chamfer near the outer edge of the flow channel extension, and the chamfer is used to fit against the inner wall of the flow channel extension.

[0016] In this solution, by setting a chamfer on the outer edge of the interface near the flow channel extension, the flow channel extension fits more tightly with the water distributor seat, thereby achieving greater space utilization. With a fixed outer diameter, a larger flow channel extension and water distributor seat can be obtained, further increasing the dispersion area.

[0017] Preferably, the interface is provided with a sealing edge near the edge of the hinge shaft, and the sealing edge extends in the radial direction of the water distributor seat.

[0018] In this solution, the sealing edge can block the gap between the edge of the flow channel extension near the hinge shaft and the water distributor seat, ensuring that the gap is less than a preset value, and preventing resin particles in the resin tank from entering the interior of the water distributor seat through the gap.

[0019] Preferably, the traction component includes a main component and branch components, the branch components are arranged in a one-to-one correspondence with the force-applying parts, the water distributor seat is provided with a guide structure, one end of the branch component is connected to the force-applying part, the other end of the branch component is arranged around the guide structure and connected to one end of the main component, and the other end of the main component passes through the central tube and extends to the upper end of the central tube.

[0020] In this design, the guide structure is used to guide the direction of force application on the branch component. When the branch component is pulled, the force applied by the branch component to the force-applying part is opposite to the force applied by the elastic element to the force-applying part. This arrangement facilitates the switching of the state of the flow channel extension component. Preferably, the guide structure is a guide hole or a guide wheel.

[0021] The main component is pulled at the upper end of the central tube. The main component drives the branch component to move. The branch component drives the flow channel extension component to rotate through the force application part. When the main component is released, the flow channel extension component returns to its initial position under the action of the elastic element, realizing synchronous expansion or contraction operation.

[0022] Preferably, the lower water distributor further includes a fixing mechanism, which is installed at the upper end of the central pipe, and the upper end of the traction member can be fixed to the fixing mechanism.

[0023] In this design, the fixing structure is used to fix the traction component, keeping the flow channel extension component in a retracted or extended state, and also preventing the traction component from slipping into the inner cavity of the water distributor seat.

[0024] Preferably, the flow channel extension has a crescent-shaped structure.

[0025] In this design, the crescent-shaped flow channel extension has a longer arc length compared to the straight flow channel extension. When unfolded, it extends in both the circumferential and radial directions of the water distributor seat, resulting in a larger distribution area. Simultaneously, the crescent-shaped flow channel extension also facilitates the overlapping arrangement of multiple flow channel extensions to obtain a larger-sized flow channel extension, thereby achieving a larger distribution area.

[0026] In one alternative, the flow channel extension is in the shape of a ring or an arc, which can also increase the dispersion area when unfolded.

[0027] Preferably, the lower surface of the water distributor base is provided with elongated holes, and a plurality of the elongated holes are arranged radially around the center of the water distributor base.

[0028] In this design, multiple radially arranged elongated holes facilitate the collection of softened water from below into the inner cavity by the water distributor, improving the water collection effect. They also facilitate the dispersion of brine from the inner cavity downwards by the water distributor, improving the regeneration effect.

[0029] A water softener comprising a water distributor as described above.

[0030] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0031] The significant advantages of this invention are as follows: Each flow channel extension of the lower water distributor is hinged to the water distributor base, and each extension can rotate circumferentially around the base. Multiple extensions are joined end-to-end and arranged around the perimeter of the base, facilitating the retraction of the base and extensions, reducing the volume of the lower water distributor, and allowing it to be inserted into the resin tank through its narrow inlet. After insertion, the extensions are deployed using a drive mechanism, extending the flow channels on the base to a greater distance and increasing the distribution area. The extensions can be switched by pulling a traction component, which rotates the extensions. When the traction component is released, the extensions return to their initial position under the action of an elastic element, achieving synchronous deployment or retraction.

[0032] After the lower water distributor is deployed, during regeneration, the water passage holes of the extended flow channel allow brine to flow into the resin away from the central area, saving brine and improving the regeneration effect. During water production, the extended flow channel is laid horizontally at the bottom of the resin tank, increasing the raw water softening path, prolonging the softening process, and improving the softening effect. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the water distributor according to a preferred embodiment of the present invention. Figure 1 (The flow channel extension is in a retracted state).

[0034] Figure 2 This is a schematic diagram of the structure of the lower water distributor after concealing the upper cover of the central tube and the water distributor seat in a preferred embodiment of the present invention. Figure 2 (The flow channel extension is in a retracted state).

[0035] Figure 3 This is a schematic diagram of the structure of the water distributor according to a preferred embodiment of the present invention. Figure 3 (The flow channel extension is in the unfolded state).

[0036] Figure 4 This is a schematic diagram of the structure of the water distributor according to a preferred embodiment of the present invention. Figure 4 (The flow channel extension is in the unfolded state).

[0037] Figure 5 This is a partial internal structural diagram of the water distributor according to a preferred embodiment of the present invention (the flow channel extension is in the unfolded state).

[0038] Explanation of reference numerals in the attached figures:

[0039] Water distributor base 1

[0040] Installation Department 11

[0041] For interface 12

[0042] Chamfer 121

[0043] Sealing edge 13

[0044] Guide structure 14

[0045] Central tube 2

[0046] Flow channel extension 3

[0047] Water passage 31

[0048] Main body part 32

[0049] Force application part 33

[0050] Hinge axis 34

[0051] Opening 35

[0052] Drive mechanism 4

[0053] Elastic element 41

[0054] Traction component 42

[0055] Main component 421

[0056] Branch component 422

[0057] Fixed mechanism 5 Detailed Implementation

[0058] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0059] like Figures 1-5As shown, this embodiment discloses a lower water distributor, which includes a water distributor base 1, a central tube 2, flow channel extension members 3, and a driving mechanism 4. One end of the central tube 2 is connected to the water distributor base 1. Multiple flow channel extension members 3 are spliced ​​end to end and arranged around the periphery of the water distributor base 1. One end of each flow channel extension member 3 is hinged to the outer circumferential surface of the water distributor base 1, and the other end of each flow channel extension member 3 can rotate along the circumferential direction of the water distributor base 1. The surface of the flow channel extension member 3 is provided with a plurality of water passage holes 31, which pass through the inner cavity of the flow channel extension member 3 and the inner cavity of the water distributor base 1. The cavity is connected to the inner cavity of the central tube 2. The driving mechanism 4 includes an elastic element 41 and a traction member 42. The elastic element 41 is arranged one-to-one with the flow channel extension member 3. The two ends of the elastic element 41 are respectively connected to the flow channel extension member 3 and the water distributor seat 1 so that the flow channel extension member 3 is in an unfolded state or a retracted state. One end of the traction member 42 is connected to each flow channel extension member 3, and the other end of the traction member 42 passes through the inner cavity of the central tube 2 and extends to the upper end of the central tube 2. The traction member 42 is used to pull the flow channel extension member 3 so that all the flow channel extension members 3 unfold or retract synchronously.

[0060] like Figures 1-4 As shown, in this embodiment, each flow channel extension 3 of the lower water distributor is hinged to the water distributor base 1. Each flow channel extension 3 can rotate along the circumferential direction of the water distributor base 1. Multiple flow channel extensions 3 are spliced ​​end to end and arranged around the periphery of the water distributor base 1, which facilitates the water distributor base 1 and the flow channel extensions 3 to close together, reducing the volume of the lower water distributor. This allows the lower water distributor to be placed into the resin tank through the narrow circular inlet of the resin tank. After the lower water distributor is placed into the resin tank, the drive mechanism 4 drives the flow channel extension 3 to unfold, so that the flow channel extension 3 extends the flow channel on the water distributor base 1 to a greater distance, increasing the distribution area of ​​the lower water distributor.

[0061] The initial state of the flow channel extension 3 is determined by the force applied to the flow channel extension 3 by the elastic element 41. When the traction element 42 is pulled, the force applied to the flow channel extension 3 by the traction element 42 is opposite to the force applied to the flow channel extension 3 by the elastic element 41. This setting facilitates the switching of the state of the flow channel extension 3.

[0062] like Figure 2 As shown, in this embodiment, the elastic element 41 applies force to keep the flow channel extension 3 in a retracted state.

[0063] In another alternative embodiment, the elastic element 41 can apply force to keep the flow channel extension 3 in the extended state.

[0064] The state switching of the flow channel extension 3 can be achieved by pulling the traction member 42, which drives the flow channel extension 3 to rotate. When the traction member 42 is released, the flow channel extension 3 returns to its initial position under the action of the elastic element 41, realizing synchronous expansion or contraction operation.

[0065] After the lower water distributor is deployed, during regeneration, the water passage holes 31 of the flow channel extension 3 can direct the brine to the resin away from the central area, which saves brine and improves the regeneration effect. After the lower water distributor is deployed, during water production, the flow channel extension 3 is laid horizontally at the bottom of the resin tank, which increases the raw water softening path, prolongs the softening process, and improves the softening effect.

[0066] like Figures 1-4 As shown, the outer wall of the water distributor base 1 has a mounting portion 11 protruding in the radial direction. The flow channel extension 3 includes a body portion 32, a force-applying portion 33, and a hinge shaft 34. The force-applying portion 33 is set at an angle to the body portion 32. The body portion 32 is hinged to the water distributor base 1 via the hinge shaft 34 provided on the mounting portion 11. The force-applying portion 33 is located inside the water distributor base 1. The mounting portion 11 is used to house the hinge shaft 34. When the outer diameter of the lower water distributor is fixed, the mounting portion 11 protrudes from the outer wall of the water distributor base 1. The body portion 32 of the flow channel extension 3 is mounted on the mounting portion 11 via the hinge shaft 34 to prevent interference between the flow channel extension 3 and the water distributor base 1 when the flow channel extension 3 rotates, thereby increasing the rotation angle of the flow channel extension 3. Meanwhile, the flow channel extension 3 also overlaps with the water distributor seat 1, allowing for a larger inner cavity in the water distributor seat 1 while also accommodating the size of the flow channel extension 3, thus maximizing the distribution area when the flow channel extension 3 is deployed. The force-applying part 33 is angled to the main body part 32, facilitating the drive mechanism 4 to drive the force-applying part 33, thereby enabling the main body part 32 to rotate around the hinge axis 34. The angle between the force-applying part 33 and the main body part 32 is preferably acute, right, or obtuse, so that the drive mechanism 4 can apply a small driving force to the force-applying part 33 within the water distributor seat 1 to drive the flow channel extension 3 to rotate.

[0067] like Figures 2-5As shown, the outer circumferential surface of the water distributor base 1 has an interface 12, and the flow channel extension 3 has an opening 35. The interface 12 is larger than the opening 35. The flow channel extension 3 is installed on the interface 12. When the flow channel extension 3 is unfolded, it communicates with the inner cavity of the water distributor base 1 through the interface 12. The force application part 33 can block part of the interface 12 when the flow channel extension 3 is unfolded, so as to avoid direct communication between the inner cavity of the water distributor base 1 and the outside. The size of the interface 12 is set to be larger so that the flow channel extension 3 is embedded in a deeper position in the interface 12, resulting in a larger size flow channel extension 3. It also prevents the flow channel extension 3 from interfering with the water distributor base 1 when rotating, ensuring that the flow channel extension 3 has sufficient rotation space to obtain a larger distribution area. In addition to cooperating with the traction member 42, the force application part 33 is also used to block part of the interface 12 to prevent resin particles in the resin tank from entering the interior of the water distributor base 1 through the interface 12.

[0068] like Figure 5 As shown, the force-applying part 33 is also used to abut against the inner wall of the water distributor seat 1, and the inner wall of the water distributor seat 1 is used to limit the rotation angle of the flow channel extension 3. The force-applying part 33 abuts against the inner wall of the water distributor seat 1, so that the flow channel extension 3 is kept at a preset rotation angle, ensuring that all flow channel extensions 3 are in the extended state and preventing the flow channel extensions 3 from rotating excessively.

[0069] like Figures 1-4 As shown, a chamfer 121 is provided on the outer edge of the interface 12 near the flow channel extension 3. The chamfer 121 is used to fit against the inner wall of the flow channel extension 3. By providing a chamfer 121 on the outer edge of the interface 12 near the flow channel extension 3, the flow channel extension 3 fits more tightly with the water distributor seat 1, thereby achieving a greater space utilization rate. With a fixed outer diameter, a larger flow channel extension 3 and water distributor seat 1 can be obtained, further increasing the dispersion area.

[0070] like Figures 1-4 As shown, a sealing edge 13 is provided on the edge of the interface 12 near the hinge shaft 34, and the sealing edge 13 extends in the radial direction of the water distributor seat 1. The sealing edge 13 can block the gap between the edge of the flow channel extension 3 near the hinge shaft 34 and the water distributor seat 1, ensuring that the gap is less than a preset value, and preventing resin particles in the resin tank from entering the interior of the water distributor seat 1 through the gap.

[0071] like Figure 2As shown, the traction component 42 includes a main component 421 and a branch component 422. The branch component 422 is correspondingly arranged with the force-applying part 33. A guide structure 14 is provided inside the water distributor seat 1. One end of the branch component 422 is connected to the force-applying part 33, and the other end of the branch component 422 winds around the guide structure 14 and connects to one end of the main component 421. The other end of the main component 421 passes through the central tube 2 and extends to the upper end of the central tube 2. The guide structure 14 guides the direction of force applied to the branch component 422. When the branch component 422 is pulled, the force applied by the branch component 422 to the force-applying part 33 is opposite to the force applied by the elastic element 41 to the force-applying part 33. This arrangement facilitates switching the state of the flow channel extension component 3. Preferably, the guide structure 14 is a guide hole, a guide groove, or a guide wheel.

[0072] like Figure 1 and Figure 2 As shown, the main component 421 is pulled at the upper end of the central tube 2. The main component 421 drives the branch component 422 to move. The branch component 422 drives the flow channel extension component 3 to rotate through the force application part 33. When the main component 421 is released, the flow channel extension component 3 returns to the initial position under the action of the elastic element 41, realizing the synchronous unfolding or retracting operation.

[0073] Preferably, the traction member is flexible, facilitating changes in the direction of force application. In this embodiment, the traction member is a traction rope. Of course, in optional embodiments, the traction member can change the direction of force application via a rotation mechanism.

[0074] like Figure 1 As shown, the lower water distributor also includes a fixing mechanism 5, which is installed at the upper end of the central tube 2. The upper end of the traction member 42 can be fixed to the fixing mechanism 5. The fixing structure is used to fix the traction member 42, so that the flow channel extension member 3 is kept in the retracted or extended state, and also to prevent the traction member 42 from slipping into the inner cavity of the water distributor seat 1.

[0075] In this embodiment, the fixing mechanism 5 is provided with a first hooking position and a second hooking position that correspond one-to-one with the unfolded state and the retracted state of the flow channel extension member. The first hooking position and the second hooking position are arranged sequentially along the height direction.

[0076] like Figures 1-5 As shown, the flow channel extension 3 has a crescent-shaped structure. Compared with the straight flow channel extension 3, the crescent-shaped flow channel extension 3 has a longer arc length. When unfolded, it extends in both the circumferential and radial directions of the water distributor seat 1, thus obtaining a larger distribution area. At the same time, the crescent-shaped flow channel extension 3 also facilitates the overlapping arrangement of multiple flow channel extensions 3 to obtain a larger-sized flow channel extension 3, thereby obtaining a larger distribution area.

[0077] In an optional embodiment, the flow channel extension is annular or arc-shaped, which can also increase the dispersion area when unfolded.

[0078] like Figure 4 As shown, the lower surface of the water distributor base 1 is provided with elongated holes, and multiple elongated holes are arranged radially around the middle of the water distributor base 1. Through the multiple radially arranged elongated holes, the water distributor base 1 can easily collect softened water from below into the inner cavity, improving the water collection effect. It can also easily disperse brine from the inner cavity downwards, improving the regeneration effect.

[0079] This embodiment also discloses a water softener, which includes a water distributor as described above.

[0080] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A water distributor, characterized in that, The lower water distributor includes a water distributor base, a central tube, flow channel extension components, and a drive mechanism. One end of the central tube is connected to the water distributor base. Multiple flow channel extension components are spliced ​​end-to-end and arranged around the periphery of the water distributor base. One end of each flow channel extension component is hinged to the outer circumferential surface of the water distributor base, and the other end of each flow channel extension component can rotate along the circumferential direction of the water distributor base. The surface of each flow channel extension component is provided with a plurality of water passage holes. The water passage holes pass through the inner cavity of the flow channel extension component, the inner cavity of the water distributor base, and the inner cavity of the central tube. The cavity is connected, and the driving mechanism includes an elastic element and a traction member. The elastic element is arranged one-to-one with the flow channel extension member. The two ends of the elastic element are respectively connected to the flow channel extension member and the water distributor seat, so that the flow channel extension member is in an unfolded state or a retracted state. One end of the traction member is connected to each of the flow channel extension members, and the other end of the traction member passes through the inner cavity of the central tube and extends to the upper end of the central tube. The traction member is used to pull the flow channel extension members so that all the flow channel extension members unfold or retract synchronously.

2. The water distributor as described in claim 1, characterized in that, The outer wall of the water distributor seat has a mounting portion protruding in the radial direction. The flow channel extension includes a body portion, a force-applying portion and a hinge shaft. The force-applying portion is set at an angle to the body portion. The body portion is hinged to the water distributor seat through the hinge shaft provided on the mounting portion. The force-applying portion is located inside the water distributor seat.

3. The water distributor as described in claim 2, characterized in that, The outer circumferential surface of the water distributor base has a mating interface, the flow channel extension has an opening, the mating interface is larger than the opening, the flow channel extension is installed on the mating interface, the opening communicates with the inner cavity of the water distributor base through the mating interface when the flow channel extension is unfolded, and the force-applying part can block part of the mating interface when the flow channel extension is unfolded, so as to prevent the inner cavity of the water distributor base from being directly connected to the outside.

4. The water distributor as described in claim 3, characterized in that, The force-applying part is also used to abut against the inner wall of the water distributor seat, and the inner wall of the water distributor seat is used to limit the rotation angle of the flow channel extension.

5. The water distributor as described in claim 3, characterized in that, The interface is provided with a chamfer near the outer edge of the flow channel extension, and the chamfer is used to fit against the inner wall of the flow channel extension.

6. The water distributor as described in claim 3, characterized in that, The interface is provided with a sealing edge near the hinge shaft, and the sealing edge extends along the radial direction of the water distributor seat.

7. The water distributor as described in claim 2, characterized in that, The traction component includes a main component and branch components. The branch components are arranged in a one-to-one correspondence with the force-applying parts. The water distributor seat has a guide structure inside. One end of the branch component is connected to the force-applying part. The other end of the branch component goes around the guide structure and is connected to one end of the main component. The other end of the main component passes through the central tube and extends to the upper end of the central tube.

8. The water distributor as described in claim 1, characterized in that, The lower water distributor also includes a fixing mechanism, which is installed at the upper end of the central pipe, and the upper end of the traction member can be fixed to the fixing mechanism.

9. The water distributor as described in claim 1, characterized in that, The flow channel extension has a crescent-shaped structure.

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

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