CN120864623B

CN120864623B - A water softener

Info

Publication number: CN120864623B
Application number: CN202511393481.1A
Authority: CN
Inventors: 张洪信
Original assignee: Weifang Haoran Machinery Co ltd
Current assignee: Weifang Haoran Machinery Co ltd
Priority date: 2025-09-28
Filing date: 2025-09-28
Publication date: 2025-12-23
Anticipated expiration: 2045-09-28
Also published as: CN120864623A

Abstract

This invention relates to the field of water treatment equipment technology, specifically to a water softener, comprising a housing consisting of a lower end cover, a middle shell, and an upper end cover. A first tube is mounted on the top of the upper end cover, one end of which is connected to a regulating valve housing via a support pipe, and the other end is fitted with a first water distributor. The middle shell contains first and second baffle assemblies, with a resin layer filling the space between the two baffle assemblies. A third tube is mounted inside the first tube, one end of which is rotatably engaged with a valve core via a second tube, and the other end passes through the first water distributor and the two baffle assemblies. The valve core is mounted on the housing, and the valve core has a connecting cavity; the second tube extends into the connecting cavity and is rotatably engaged. The valve core has interconnected annular and vertical flow channels, both surrounding the connecting cavity. The valve core has a first connecting hole and a second connecting hole, respectively connecting the connecting cavity and the annular flow channel. This invention achieves efficient fluid path switching by driving the regulating valve to rotate 90 degrees using an electric actuator, significantly simplifying the operation process.

Description

Water softener

Technical Field

The invention relates to the technical field of water treatment devices, in particular to a water softener.

Background

The water softener is widely applied to the industrial and civil fields, and the core principle is to remove the hard ions such as calcium, magnesium and the like in water through ion exchange resin. In the softening process, the resin gradually becomes saturated and loses efficacy, and the resin needs to be periodically backwashed and regenerated to recover the functions. Conventional water softeners typically employ multiple valves to effect different mode switching. In the prior art, a valve structure for realizing multi-mode switching through one valve also exists, but the valve needs a plurality of valve plates, gears, motors and other structures, has a plurality of movable parts, can be normally used only by being matched with a complex internal pipeline design, and has high use and maintenance cost.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides a water softener, which is realized by the following technical scheme:

A water softener comprises a shell body composed of a lower end cover, a middle shell and an upper end cover, wherein a first pipe body is installed at the top of the upper end cover, a first end of the first pipe body is connected with a protective shell of an adjusting valve through a supporting pipe, a first water distributor is installed at the second end of the first pipe body, a first partition plate assembly and a second partition plate assembly are arranged in the middle shell from top to bottom, a resin layer is filled between the first partition plate assembly and the second partition plate assembly, a third pipe body is installed in the first pipe body, a second end of the third pipe body sequentially penetrates through the first water distributor, the first partition plate assembly and the second partition plate assembly, a rotatable valve core is installed in the protective shell, a connecting cavity is formed in the valve core, the first end of the third pipe body is installed with the second pipe body, the second pipe body extends into the connecting cavity and is in rotary fit with the connecting cavity, an annular flow channel and a vertical flow channel which are mutually communicated are arranged in the valve core, the annular flow channel and the vertical flow channel are all arranged around the connecting cavity, and a first connecting hole, a second connecting hole, a first connecting hole and a second connecting hole which are communicated with the first connecting hole and a second connecting hole which are correspondingly connected with the first connecting hole and the second connecting hole.

The valve core is driven by an electric actuator.

The valve core comprises an annular second valve block and a first valve block sleeved in the second valve block, the top of the first valve block and the top of the second valve block are detachably connected with the connecting plate, the connecting cavity is formed in the middle of the bottom of the first valve block, the first connecting hole penetrates through the second valve block, the annular flow passage is formed by combining a third annular groove formed in the outer wall of the first valve block and a fourth annular groove formed in the inner wall of the second valve block, and the second connecting hole is formed in the side wall of the second valve block.

The top of the connecting plate is fixedly provided with a valve rod, and the valve rod penetrates through the protective shell.

The inner wall of the middle shell is fixedly provided with an annular second water baffle, the second end of the third pipe body is detachably provided with a first water baffle, the outer diameter of the first water baffle is larger than the inner diameter of the second water baffle and smaller than the inner diameter of the middle shell, and the first water baffle is in clearance fit with the second water baffle.

The first water baffle comprises a tray body provided with a third connecting pipe at the middle position, the third connecting pipe is in threaded connection with the second end of the third pipe body, the side wall of the tray body is fixedly connected with the inner edge of the first annular groove, the opening of the first annular groove faces towards the upper end cover, the second water baffle comprises a second annular groove with the opening facing towards the lower end cover, the outer edge of the second annular groove is fixedly provided with a second side edge, the second side edge is detachably connected with the inner wall of the middle shell, and the inner edge of the second annular groove is positioned in the first annular groove and in clearance fit with the inner wall of the first annular groove.

And a clamping square is arranged at the upper part of the third connecting pipe.

The bottom of the third connecting pipe is provided with a second water distributor through a seventh flange.

The first baffle assembly comprises a first connecting ring fixedly arranged on the inner wall of the middle shell, and a first plate body is detachably arranged at the top of the first connecting ring.

The second partition plate assembly comprises a second connecting ring, a second gasket, a second plate body and a supporting ring from top to bottom in sequence, wherein the second connecting ring is fixedly connected with the inner wall of the middle shell, a plurality of second studs are fixedly arranged at the bottom of the second connecting ring in a circumferential array shape, penetrate through the second gasket, the second plate body and the supporting ring in sequence, and then are meshed and connected with second nuts.

The technical scheme of the invention has the following advantages:

The mode switching of softening, backwashing and salt washing can be completed by driving the regulating valve to rotate by a preset angle through the electric actuator. The regulating valve adopts a unique design of an annular flow channel and a vertical flow channel, and is matched with a multi-channel interface, so that the efficient conversion of a fluid path is realized, and the operation flow is greatly simplified.

The first water baffle and the second water baffle form clearance fit, so that the flow speed is reduced when the backwash water flows through the clearance of the annular groove, the liquid level is stably increased, and the local water pressure is prevented from being excessively high during backwash.

The porous plate body in the first baffle plate component and the second baffle plate component is matched with the sealing gasket, so that the water flow is ensured to uniformly penetrate through the resin layer, resin particles are effectively intercepted, and the water is prevented from entering the pipeline system.

The first baffle component is positioned at the top of the resin layer, so that the injection pressure of the water distributor can be relieved, and the softening reaction is ensured to be sufficiently uniform.

The valve core adopts a double-valve block nested structure and is matched with a plurality of sealing rings for layered sealing, so that the leakage risk is reduced, the number of movable parts is small, and the failure rate is low.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic diagram of the structure shown at A in FIG. 2;

FIG. 4 is a schematic diagram of the structure at B in FIG. 2;

FIG. 5 is a schematic view of a first water baffle;

FIG. 6 is a second schematic structural view of the first dam;

FIG. 7 is a schematic diagram showing the matching relationship between the first water baffle and the second water baffle;

FIG. 8 is a schematic diagram of the mating relationship of a regulator valve and an electric actuator;

FIG. 9 is a schematic diagram of a regulator valve configuration;

FIG. 10 is a schematic diagram of the internal structure of a regulator valve;

fig. 11 is a second schematic diagram of the internal structure of the regulating valve.

In the figure, the upper end cover is 1-, the middle shell is 2-, the upper end cover is 3-, the first pipe body is 4-, the support pipe is 5-, the regulating valve is 6-, the electric actuator is 7-, the inspection hole is 8-, the second pipe body is 9-, the first connecting pipe is 10-, the first partition board assembly is 11-, the third pipe body is 12-, the second partition board assembly is 13-, the first sprinkling pipe is 14-, the second connecting pipe is 15-, the first sprinkling hole is 16-, the third connecting pipe is 17-, the first water baffle is 18-, the second water baffle is 19-, the second sprinkling pipe is 20-second, the first stud is 21-first, the first plate body is 22-first, the first gasket is 23-first, the first connecting ring is 25-second connecting ring, the second gasket is 26-second, the second gasket is 27-second plate body, the support ring is 28-second stud, the first ring groove is 30-first ring groove, the first plate body is 31-second ring body, the second snap-square is 32-33-body, the seventh flange is 34-seventh flange, the first internal screw thread is 35-the first ring groove is 36-second ring groove, the second ring groove is 37-second side edge is 38-second valve cover is 40-ring-first connecting hole is 48-second, the first connecting ring-first connecting hole is 48-second connecting ring groove, the first connecting hole is 48-second connecting hole is 46-third connecting hole is 46-ring-first connecting hole is 48-first connecting hole, the sealing ring is 48-46-fourth connecting hole is 48-sealing ring, the sealing ring is 48-46-first connecting hole is 48-sealing ring, the sealing ring is 48-connecting hole is 48-first, the sealing ring and the sealing ring is 48-connecting.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the modules or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 and 2, the present invention provides a water softener, which comprises a housing formed by a lower end cap 1, an intermediate housing 2 and an upper end cap 3, wherein the lower end cap 1 and the upper end cap 3 are respectively mounted at the bottom and the top of the intermediate housing 2, and in this embodiment, the lower end cap 1, the upper end cap 3 and the intermediate housing 2 can be connected by welding or can be detachably connected by flanges.

The upper end cover 3 is provided with an inspection hole 8.

A first pipe body 4 is fixed at a middle position of the top of the upper end cover 3 by welding, a first end of the first pipe body 4 is positioned outside the upper end cover 3, and a second end is positioned inside the upper end cover 3 and extends to the lower end cover 1.

The first end of the first pipe body 4 is fixedly provided with a first flange, and the second end is fixedly provided with a second flange.

The first flange is connected with a third flange fixedly mounted at the first end of the support tube 5 by bolts.

A fourth flange is fixedly mounted at the second end of the support tube 5, and is connected with the regulating valve 6 through bolts, and the regulating valve 6 is driven by the electric actuator 7.

The second flange is connected with a fifth flange fixedly installed at the top of the first connection pipe 10 by bolts.

The bottom of first connecting pipe 10 is fixed mounting has the shrouding, and the middle part of shrouding is equipped with the through-hole, installs third body 12 in the through-hole, and the external diameter of this third body 12 is less than the internal diameter of first connecting pipe 10, also is less than the internal diameter of first body 4.

The hole wall of the through hole and the outer wall of the third pipe body 12 are fixed together through welding, so that the bottom of the first connecting pipe 10 is fully sealed.

The first end of the third pipe body 12 penetrates out of the top of the first connecting pipe 10, enters the first pipe body 4, and is fixedly connected with the large-diameter end of the inverted horn-shaped transition section, and the small-diameter end of the transition section is fixedly connected with the first end of the second pipe body 9.

The second end of the second tube 9 extends into the regulator valve 6 and is in a running fit with the regulator valve 6.

A plurality of second sprinkler pipes 20 are fixedly arranged on the side wall of the first connecting pipe 10 in a circumferential array shape, and the second sprinkler pipes 20 are communicated with the first connecting pipe 10.

The end of the second sprinkler tube 20 remote from the first connection tube 10 is sealed.

A plurality of second sprinkling holes are formed in each second sprinkling pipe 20.

The second end of the third pipe body 12 extends into the intermediate case 2 and penetrates the first diaphragm assembly 11 and the second diaphragm assembly 13 in sequence.

The first and second diaphragm assemblies 11 and 13 are installed at the upper and lower portions of the intermediate case 2, respectively.

The resin is filled between the first separator assembly 11 and the second separator assembly 13.

The structure of the first partition board assembly 11 is shown in fig. 3, and includes a first connection ring 24 fixedly installed on the inner wall of the middle shell 2, a first board 22 is detachably installed at the top of the first connection ring 24, and the material of the first board 22 can allow water to pass through, but not allow resin to pass through, which is a prior art and will not be described in detail.

Specifically, the top of the first connecting ring 24 is fixedly provided with a plurality of first studs 21 in a circumferential array shape, and the first studs 21 penetrate through the first plate 22 and then are provided with first nuts, so that the first plate 22 is fixed.

A first gasket 23 is mounted between the first plate 22 and the first connecting ring 24 for cushioning and sealing.

The structure of the second partition plate assembly 13 is shown in fig. 4, and comprises a second connecting ring 25, a second gasket 26, a second plate 27 and a supporting ring 28 from top to bottom in sequence, wherein the second connecting ring 25 is fixedly connected with the inner wall of the middle shell 2, a plurality of second studs 29 are fixedly arranged at the bottom of the second connecting ring 25 in a circumferential array shape, the second studs 29 vertically face downwards, sequentially penetrate through the second gasket 26, the second plate 27 and the supporting ring 28, and then second nuts are arranged to finish the installation of the second plate 27.

The second plate 27 is made of the same material as the first plate 22.

Clamping the second plate 27 between the second connecting ring 25 and the supporting ring 28 can make the installation of the second plate 27 more stable.

The second end of the third pipe body 12 is connected to the first water baffle 18 by screw threads after penetrating the second separator assembly 13.

An annular second water baffle 19 is fixedly arranged on the inner wall of the middle shell 2, and the second water baffle 19 is matched with the first water baffle 18.

The first water baffle 18 has a structure as shown in fig. 2, 5 and 6, and comprises a tray body 31, wherein a third connecting pipe 17 is fixedly arranged at the middle position of the tray body 31, the third connecting pipe 17 comprises a body 33, and a seventh flange 34 is fixedly arranged at the bottom of the body 33.

A first internal thread 35 is provided in the body 33 and an external thread engaged with the first internal thread 35 is provided at the second end of the third pipe body 12. That is, the second end of the third pipe body 12 penetrates the disc body 31 and is screwed with the third connection pipe 17.

As shown in fig. 7, the side wall of the disc 31 is also fixedly connected with the inner edge of the first ring groove 30. The opening of the first ring groove 30 is directed toward the upper end cap 3.

The first ring groove 30 has a circular arc-shaped cross section.

The outer diameter of the first ring groove 30 is smaller than the inner diameter of the intermediate case 2.

The second water deflector 19 is constructed as shown in fig. 7 and includes a second ring groove 36 which opens toward the lower end cap 1.

The outer edge of the second ring groove 36 is fixedly provided with a second side edge 37, and the second side edge 37 is cylindrical and is engaged and connected with a second internal thread on the inner wall of the middle shell 2.

The second ring groove 36 has an inner diameter smaller than the outer diameter of the first ring groove 30 but larger than the inner diameter of the first ring groove 30.

The inner edge of the second ring groove 36 is located in the first ring groove 30 and is in clearance fit with the inner wall of the first ring groove 30.

The structure of the third connecting pipe 17 is shown in fig. 5 and 7, the upper part of the third connecting pipe is provided with a clamping square 32, the bottom of the third connecting pipe is fixedly provided with a seventh flange 34, and the seventh flange 34 is connected with an eighth flange fixedly arranged at the top of the second connecting pipe 15 through bolts.

The bottom of the second connecting pipe 15 is sealed, a plurality of first sprinkling pipes 14 are fixedly arranged on the side wall in a circumferential array shape, and one end of the first sprinkling pipe 14, which is far away from the second connecting pipe 15, is sealed.

The first sprinkler pipe 14 is provided with a plurality of first sprinkler holes 16.

The first sprinkler pipe 14 and the second connection pipe 15 constitute a second water distributor.

The second sprinkler pipe 20 and the first connection pipe 10 constitute a first water distributor.

The second water distributor and the first water distributor in this embodiment may also adopt other structures in the prior art.

As shown in fig. 8, the electric actuator 7 is mounted on the top of the regulating valve 6 by bolts, and the valve rod of the regulating valve 6 is connected with the output end of the electric actuator 7 by a coupling.

The structure of the regulating valve 6 is shown in fig. 9, 10 and 11, and comprises a protective shell composed of an upper valve cover 38 and a lower valve cover 41, wherein the upper valve cover 38 and the lower valve cover 41 are connected through threaded engagement, and other connection modes in the prior art such as bolt connection and the like can be adopted.

The valve stem extends through the upper bonnet 38 and is in rotational engagement with the upper bonnet 38 via a sealed bearing.

The upper valve cover 38 is fixedly provided with first to fourth connection ports 39 to 39 in a circumferential array, and the first to fourth connection ports are positioned in the same plane.

The upper valve cover 38 is fixedly provided with fifth to eighth connecting ports 40 to 40 in a circumferential array, and the fifth to eighth connecting ports are positioned in the same plane.

The planes of the fifth to eighth connection ports 40 to 40 are located between the planes of the first to fourth connection ports 39 to 41 and the lower valve cover 41.

The bottom of the lower valve cover 41 is fixedly provided with a fourth connecting pipe 42, one end of the fourth connecting pipe 42 far away from the lower valve cover 41 is fixedly provided with a sixth flange, and the Six Codes th flange is connected with the first flange through bolts.

A rotatable valve core is mounted in the upper valve cover 38, and the bottom of the valve core is in rotary fit with the upper valve cover 38.

The valve core has a structure shown in figure 10 and comprises an annular second valve block, a first valve block 44 sleeved in the second valve block, and a connecting plate 43, wherein the connecting plate 43 is positioned at the top of the valve core and is fixed with the second valve block and the first valve block 44 through hexagon socket head cap bolts.

The valve stem is fixedly mounted on top of the connection plate 43.

A plurality of third sealing rings 45 are arranged between the inner wall of the second valve block and the side wall of the first valve block 44, a plurality of fourth sealing rings 46 are arranged between the outer wall of the second valve block and the inner wall of the upper valve cover 38, and a plurality of fifth sealing rings 49 are arranged between the bottom of the second valve block and the lower valve cover 41.

A connecting cavity 50 is arranged at the middle position of the bottom of the first valve block 44, and the connecting cavity 50 is of a blind hole structure which is upwards arranged from the bottom of the first valve block 44.

The second valve block is provided with a first connecting hole 51 for communicating with the connecting cavity 50. I.e. the first connecting hole 51 opens from the outer wall of the second valve block until the connecting chamber 50 is communicated.

The third seal ring 45 and the fourth seal ring 46 are mounted on both the upper side and the lower side of the first connection hole 51.

The junction of the second valve block and the first valve block 44 is provided with an annular flow passage 47, and the annular flow passage 47 communicates with the fourth connecting pipe 42 through a plurality of vertical flow passages 48 provided on the first valve block 44.

At least one fourth sealing ring 46 is installed on the upper side and the lower side of the annular flow passage 47, respectively.

The annular runner 47 comprises a third annular groove formed in the outer wall of the first valve block 44 and a fourth annular groove formed in the inner wall of the second valve block, wherein the third annular groove and the fourth annular groove are formed in the same height (distance from the bottom of the second valve block) and the same width, and the third annular groove and the fourth annular groove are buckled together to form a complete annular runner 47.

The connecting chamber 50 coincides with the axis of the annular flow passage 47, and the inner diameter of the annular flow passage 47 is larger than the diameter of the connecting chamber 50.

The vertical flow channel 48 is of arcuate, hole-like configuration.

The side wall of the second valve block is also provided with a second connecting hole 52 for communicating with the annular flow passage 47.

The fourth sealing ring 46 is installed at both upper and lower sides of the second connection hole 52.

The second connection hole 52 may communicate with one of the fifth connection ports 40 to eighth connection ports.

The first connection hole 51 may communicate with one of the first to fourth connection ports 39 to 39.

The first to fourth connection ports 39 to fourth connection ports may be connected to the soft water outlet pipe, the backwash water inlet pipe, the brine inlet pipe, etc. as needed, and the unnecessary ports may be plugged.

The fifth to eighth connection ports 40 to 40 may be connected to a raw water inlet pipe, a backwash water outlet pipe, a brine outlet pipe, etc., respectively, and unnecessary ports may be plugged.

In this embodiment, the axis of the second connecting hole 52 is perpendicular to the axis of the first connecting hole 51, and may be parallel, or may be designed according to practical requirements.

The valve body in this embodiment is simple in structure, and movable parts are few, only need through electric actuator 7 drive case rotation 90 degrees, can realize the switching between raw water softening and the resin backwash, rotate 90 degrees in same direction again, just can realize the salt washing to the resin.

The second end of the second pipe body 9 extends into the connecting cavity 50, and a plurality of sixth sealing rings are installed between the second end and the connecting cavity 50.

In the embodiment, the lower end cover 1, the middle shell 2 and the upper end cover 3 are preferably connected by flanges, so that the installation of each part in the interior is convenient.

A first sealing ring is installed between the third pipe body 12 and the first plate body 22, and a second sealing ring is installed between the third pipe body 12 and the second plate body 27.

In this embodiment, the first connection hole 51 is located above the second connection hole 52, and of course, the first connection hole 51 and the second connection hole 52 may be formed at the same height according to actual situations, or the second connection hole 52 may be disposed above the first connection hole 51.

When raw water is softened, the raw water reaches the first water distributor through the second connecting hole 52, the annular flow passage 47, the vertical flow passage 48, the fourth connecting pipe 42 and the first pipe body 4, and the first water distributor uniformly sprays the raw water onto the first plate body 22.

The raw water then passes through the first plate 22 into the resin layer.

Although the first water distributor can prevent raw water from directly impacting the resin layer, when the water pressure is high, water flow sprayed by the water distributor can still impact the resin layer, and at the moment, the first plate 22 can fully play a role, so that water flow flowing to the resin layer is more uniform.

The softened water enters the connection chamber 50 through the third pipe body 12, the second pipe body 9, and finally is discharged from the connection chamber 50.

During backwashing, the backwash water enters the second water distributor through the first connecting hole 51, the connecting cavity 50 and the third pipe body 12 and is uniformly distributed to the space between the first water baffle 18 and the lower end cover 1 by the second water distributor.

The liquid level of the backwash water gradually rises and reaches the lower part of the second plate body 27 through the gap between the first water baffle 18 and the second water baffle 19, and then passes through the second plate body 27, the resin layer, the first plate body 22, the first water distributor, the first pipe body 4, the vertical flow passage 48, the annular flow passage 47 and the second connecting hole 52 to be discharged from the backwash water outlet pipe.

In the rising process of the backwash water flow, after passing through the gap between the two water baffles, the liquid level rises more stably and uniformly. The first plate 22 prevents the individual resins from entering the first water distributor with the water flow.

Due to the existence of the two water baffles, the second water distributor can be omitted.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims

1. A water softener is characterized by comprising a shell body composed of a lower end cover (1), a middle shell (2) and an upper end cover (3), wherein a first pipe body (4) is arranged at the top of the upper end cover (3), a first end of the first pipe body (4) is connected with a protective shell of an adjusting valve (6) through a supporting pipe (5), a first water distributor is arranged at a second end of the first pipe body (4), a first baffle plate assembly (11) and a second baffle plate assembly (13) are arranged in the middle shell (2) from top to bottom, a resin layer is filled between the first baffle plate assembly (11) and the second baffle plate assembly (13), a third pipe body (12) is arranged in the first pipe body (4), a second end of the third pipe body (12) sequentially penetrates through the first water distributor, the first baffle plate assembly (11) and the second baffle plate assembly (13), a rotatable valve core is arranged in the protective shell, a connecting cavity (50) is formed in the valve core, a second pipe body (9) of the third pipe body (12) is arranged at the second end, the second pipe body (9) extends into the connecting cavity (50), the valve core is internally provided with an annular flow passage (47) and a vertical flow passage (48) which are communicated with each other, the annular flow passage (47) and the vertical flow passage (48) are arranged around the connecting cavity (50), a first connecting hole (51) and a second connecting hole (52) which are respectively communicated with the connecting cavity (50) and the annular flow passage (47) are also formed in the valve core, two groups of connecting ports are arranged on the protective shell and correspond to the first connecting hole (51) and the second connecting hole (52) respectively, and when the valve core rotates, the first connecting hole (51) and the second connecting hole (52) can be simultaneously connected with the corresponding connecting ports.

2. The water softener according to claim 1, characterized in that the valve cartridge is driven by an electric actuator (7).

3. The water softener according to claim 1 or 2, characterized in that the valve core comprises an annular second valve block and a first valve block (44) sleeved in the second valve block, the top of the first valve block (44) and the top of the second valve block are detachably connected with a connecting plate (43), the connecting cavity (50) is formed in the middle position of the bottom of the first valve block (44), the first connecting hole (51) penetrates through the second valve block, the annular flow channel (47) is formed by combining a third annular groove formed in the outer wall of the first valve block (44) and a fourth annular groove formed in the inner wall of the second valve block, and the second connecting hole (52) is formed in the side wall of the second valve block.

4. A water softener according to claim 3, characterized in that the top of the web (43) is fixedly fitted with a valve stem which extends through the casing.

5. The water softener according to claim 4, characterized in that an annular second water baffle (19) is fixedly arranged on the inner wall of the middle shell (2), a first water baffle (18) is detachably arranged at the second end of the third pipe body (12), the outer diameter of the first water baffle (18) is larger than the inner diameter of the second water baffle (19) and smaller than the inner diameter of the middle shell (2), and the first water baffle (18) is in clearance fit with the second water baffle (19).

6. The water softener according to claim 5, characterized in that the first water deflector (18) comprises a tray body (31) provided with a third connecting pipe (17) at the middle position, the third connecting pipe (17) is in threaded connection with the second end of the third pipe body (12), the side wall of the tray body (31) is fixedly connected with the inner edge of the first annular groove (30), the opening of the first annular groove (30) faces the upper end cover (3), the second water deflector (19) comprises a second annular groove (36) which is opened towards the lower end cover (1), the outer edge of the second annular groove (36) is fixedly provided with a second side edge (37), the second side edge (37) is detachably connected with the inner wall of the middle shell (2), and the inner edge of the second annular groove (36) is positioned in the first annular groove (30) and is in clearance fit with the inner wall of the first annular groove (30).

7. A water softener according to claim 6, characterized in that the upper part of the third connecting pipe (17) is provided with a blocking square (32).

8. The water softener according to claim 7, characterized in that the bottom of the third connection pipe (17) is equipped with a second water distributor through a seventh flange (34).

9. The water softener according to claim 1, characterized in that the first diaphragm assembly (11) comprises a first connection ring (24) fixedly installed on the inner wall of the intermediate housing (2), and a first plate body (22) is detachably installed at the top of the first connection ring (24).

10. The water softener according to claim 1, characterized in that the second partition plate assembly (13) comprises a second connecting ring (25), a second gasket (26), a second plate body (27) and a supporting ring (28) from top to bottom, wherein the second connecting ring (25) is fixedly connected with the inner wall of the middle shell (2), a plurality of second studs (29) are fixedly arranged at the bottom of the second connecting ring (25) in a circumferential array shape, and the second studs (29) sequentially penetrate through the second gasket (26), the second plate body (27) and the supporting ring (28) and then are meshed and connected with a second nut.