CN212203186U

CN212203186U - Novel switching valve

Info

Publication number: CN212203186U
Application number: CN202020656981.6U
Authority: CN
Inventors: 纪岩龙; 郭孝澄; 刘伟山; 祝传宝
Original assignee: Xiamen Lota International Co Ltd
Current assignee: Xiamen Lota International Co Ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-12-22
Anticipated expiration: 2030-04-26

Abstract

The utility model provides a novel diverter valve relates to valve switch technical field, include: the valve body shell and the water outlet switching device; a water inlet channel, a first water outlet channel and a second water outlet channel are arranged in the valve body shell; the water outlet switching device is arranged inside the valve body shell; the water outlet switching device comprises a fixed ceramic chip, a movable ceramic chip and a valve rod; the fixed ceramic sheet is provided with a water through hole, and the movable ceramic sheet is provided with a first water inlet hole and a second water inlet hole; the fixed ceramic chip and the movable ceramic chip are embedded in the valve body shell, and water supply of the water inlet channel can only enter the first water outlet channel or the second water outlet channel through the water passing holes of the fixed ceramic chip; the valve rod controls the brake ceramic chip to rotate relative to the fixed ceramic chip, only one of the first water inlet hole or the second water inlet hole of the movable ceramic chip is allowed to be communicated with the water passing hole of the fixed ceramic chip in one rotation switching process, and then the water inlet channel is controlled to be communicated with the first water outlet channel or the second water outlet channel.

Description

Novel switching valve

Technical Field

The utility model relates to a valve switch technical field particularly, relates to a novel diverter valve.

Background

The switch switching between the different water routes of shower equipment in the market, what mostly adopted is that the diverter valve is installed on leading body, compresses tightly through the upper cover or the screw thread is paid so that diverter valve and leading body fixed connection, realizes the mutual switching in two kinds of different water routes.

At present, two sets of valve cores with different water paths are usually arranged in a faucet body, and the water paths are switched by controlling the two sets of valve cores. The installation of the two valve cores inevitably increases the overall volume of the faucet, and influences the appearance. Moreover, the valve core structure formed by switching a plurality of different water ways is more huge and tedious, and no matter the valve core is combined or switched, the valve core structure has a plurality of structural accessories, long processing and production process, higher manufacturing precision, long production and assembly procedures and more steps, so that the product cost is high, and the batch production and the popularization and application are difficult.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a novel diverter valve aims at improving the complicated and inconvenient scheduling problem of operation of current diverter valve structure.

The utility model adopts the following scheme:

a novel switching valve, comprising: the valve body shell and the water outlet switching device; the valve body shell is internally provided with a water inlet channel which is arranged in a vertical direction and is positioned above, a first water outlet channel which is positioned below and is oppositely arranged, and a second water outlet channel which is arranged at one side of the valve body shell in a horizontal direction; the water outlet switching device is arranged in the valve body shell and used for controlling and switching the water inlet channel to be communicated with only one of the first water outlet channel and the second water outlet channel; the water outlet switching device comprises a fixed ceramic chip arranged opposite to the water inlet channel, a movable ceramic chip tightly matched with the fixed ceramic chip and a valve rod for driving the movable ceramic chip to rotate relative to the fixed ceramic chip; the fixed ceramic sheet is provided with a water through hole, the movable ceramic sheet is provided with a first water inlet hole selectively communicated with the first water outlet channel and a second water inlet hole selectively communicated with the second water outlet channel, and the first water inlet hole and the second water inlet hole are relatively independently arranged; the fixed ceramic chip and the movable ceramic chip are embedded in the valve body shell, and water supply of the water inlet channel can only enter the first water outlet channel or the second water outlet channel through the water through holes of the fixed ceramic chip; the valve rod drives the movable ceramic sheet to rotate, and one rotation switching only allows one of the first water inlet hole or the second water inlet hole to be communicated with the water through hole.

As a further improvement, the valve body shell is of an inverted hollow T-shaped structure, the water inlet channel and the first water outlet channel are arranged along the same vertical direction, and the second water outlet channel is approximately vertically arranged on one side of the middle part of the valve body shell.

As a further improvement, a fixed seat is arranged at the top of the valve body shell, the fixed seat is fixed inside the valve body shell through an external thread plug, the fixed seat is provided with a through hole with an internal thread, the through hole is communicated to the water inlet channel, and an external water outlet pipe is connected and fixed through the through hole so as to correspondingly supply water into the valve body shell.

As a further improvement, a sealing element is arranged between the fixed seat and the fixed ceramic piece, and the sealing element enables a sealing space to be formed between the fixed seat and the fixed ceramic piece.

As a further improvement, one end of the valve rod is in concave-convex clamping fit with the movable ceramic chip, the other end of the valve rod is provided with a spline and at least partially extends to the outside of the valve body shell, and the first water outlet channel is arranged inside the valve rod.

As a further improvement, the valve rod is correspondingly arranged in the valve body shell by sleeving a wear pad, and the valve rod correspondingly drives the movable ceramic chip to rotate relative to the fixed ceramic chip along the axial rotation of the valve rod so as to control only the first water inlet hole to be communicated with the water through hole or only the second water inlet hole to be communicated with the water through hole.

As a further improvement, the upper end surface of the valve rod is convexly provided with a convex part along the peripheral direction, and the lower end surface of the movable ceramic piece is correspondingly provided with a groove which is matched with the convex part in a clamping way; the valve rod extends to a driving part is arranged on a spline outside the valve body shell and used for a user to rotate the driving part to correspondingly rotate the ceramic sheet.

As a further improvement, when the first water inlet hole is communicated with the water through hole, the movable ceramic sheet is rotated correspondingly until the first water inlet hole is communicated with the first water outlet channel; when the second water inlet hole is communicated with the water through hole, the second water inlet hole is communicated with the second water outlet channel corresponding to the movable ceramic chip in a rotating mode.

As a further improvement, two water through holes are arranged on the end surface of the fixed ceramic piece at intervals along the horizontal direction, and the two water through holes are transversely arranged on the end surface of the fixed ceramic piece, so that the water inlet channel is directly connected with the movable ceramic piece through the water through holes.

As a further improvement, the first water inlet hole vertically penetrates through the end surface of the movable ceramic sheet so as to be connected to the first water outlet channel; the second water inlet hole forms a notch which is inwards concave along the side wall, and the notch is connected to the second water outlet channel.

By adopting the technical scheme, the utility model discloses can gain following technological effect:

the switching valve of this application, through valve body shell and the play water auto-change over device of configuration in its inside, the valve body shell has replaced the independent configuration of current tap body and valve, becomes integrative with combination valve body and tap body integrated into one piece, goes out water auto-change over device configuration inside the valve body shell for the control is switched inhalant canal and is only linked together with one of them first exhalant canal or second exhalant canal, thereby realizes the water route switching function of switching valve through the inside cooperation that changes the valve body. Wherein, go out water auto-change over device and pass through the valve rod control and move the ceramic chip and rotate relatively deciding the ceramic chip, in the rotation switching process of once, only allow one of them of the first inlet opening or the second inlet opening of moving the ceramic chip and decide the water hole of ceramic chip and link up mutually, and then control water inlet channel and first water outlet channel or second water outlet channel and be linked together, rotate through the valve rod in order to control the switching between two water outlet channel, simple structure just does benefit to the operation, very big saving manufacturing and use cost, be favorable to production, popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a disassembled schematic view of a switching valve according to an embodiment of the present invention;

fig. 2 is a sectional view of a switching valve according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of the water outlet switching device in FIG. 1;

FIG. 4 is a schematic illustration of the water inlet of FIG. 2, wherein the water inlet passage is in communication with the second water outlet passage, and the direction of the arrows indicate the direction of delivery of the supply water;

FIG. 5 is a schematic view of the movable and fixed ceramic tiles of FIG. 4, wherein the arrow direction is shown in exploded view;

FIG. 6 is a cross-sectional view of the movable and fixed tiles of FIG. 4, wherein the direction of the arrows indicates the direction of the supply of water;

FIG. 7 is a schematic drawing of the water inlet of FIG. 2 taken from another perspective, wherein the water inlet channel is in communication with the first water outlet channel, and the direction of the arrows indicate the direction of delivery of the supply water;

FIG. 8 is a schematic view of the movable and fixed tiles of FIG. 7, wherein the direction of the arrows is shown in exploded view;

FIG. 9 is a sectional view of the movable and fixed tiles of FIG. 7, wherein the direction of the arrows indicates the direction of the supply of water;

icon: 1-a valve body housing; 11-a water inlet channel; 12-a first water outlet channel; 13-a second water outlet channel; 2-a water outlet switching device; 21-determining a ceramic chip; 211-water through holes; 22-moving the ceramic chip; 221-a first water inlet hole; 222-a second water inlet hole; 223-grooves; 23-a valve stem; 231-a convex portion; 232-spline; 3-fixing the base; 4-a seal; 5-wear resistant pad.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

With reference to fig. 1 to 9, the present embodiment provides a novel switching valve, including: a valve body shell 1 and a water outlet switching device 2.

In the present embodiment, the valve body housing 1 has, in its interior, an upper water inlet passage 11 and a lower first water outlet passage 12 which are arranged to be opposed to each other in the vertical direction, and a second water outlet passage 13 which is arranged on one side of the valve body housing 1 in the horizontal direction. The water outlet switching device 2 is disposed inside the valve body housing 1 for controlling the switching water inlet channel 11 to be communicated with only one of the first water outlet channel 12 and the second water outlet channel 13. The water outlet switching device 2 comprises a fixed ceramic piece 21 opposite to the water inlet channel 11, a movable ceramic piece 22 closely matched with the fixed ceramic piece 21, and a valve rod 23 for driving the movable ceramic piece 22 to rotate relative to the fixed ceramic piece 21. The fixed ceramic piece 21 is provided with a water through hole 211, the movable ceramic piece 22 is provided with a first water inlet hole 221 selectively communicated with the first water outlet channel 12 and a second water inlet hole 222 communicated with the second water outlet channel 13, and the first water inlet hole 221 and the second water inlet hole 222 are relatively independently arranged. The fixed ceramic pieces 21 and the movable ceramic pieces 22 are embedded in the valve body housing 1, and water supplied to the water inlet channel 11 can only enter the first water outlet channel 12 or the second water outlet channel 13 through the water through holes 211 of the fixed ceramic pieces 21. The valve rod 23 drives the movable ceramic plate 22 to rotate, and a rotation switch only allows one of the first water inlet 221 or the second water inlet 222 to communicate with the water through hole 211.

The switching valve of the embodiment, through the valve body housing 1 and the water outlet switching device 2 configured inside the valve body housing 1, the valve body housing 1 replaces the independent configuration of the existing faucet body and valve, the valve body and the faucet body are integrally formed to be combined into an integral piece, the water outlet switching device 2 is configured inside the valve body housing 1 to control the switching water inlet channel 11 to be communicated with only one of the first water outlet channel 12 or the second water outlet channel 13, and the internal cooperation of the valve body is changed to realize the waterway switching function of the switching valve. The water outlet switching device 2 controls the movable ceramic piece 22 to rotate relative to the fixed ceramic piece 21 through the valve rod 23, only one of the first water inlet hole 221 or the second water inlet hole 222 of the movable ceramic piece 22 is allowed to be communicated with the water through hole 211 of the fixed ceramic piece 21 in one rotation switching process, and then the water inlet channel 11 is controlled to be communicated with the first water outlet channel 12 or the second water outlet channel 13 only, and the valve rod 23 rotates to control the switching between the two water outlet channels.

It should be noted that when the movable ceramic piece 22 is rotated to make the first water inlet hole 221 communicate with the water through hole 211, the corresponding movable ceramic piece 22 is rotated to make the first water inlet hole 221 communicate with the first water outlet channel 12. When the movable ceramic sheet 22 is rotated to make the second water inlet hole 222 and the water through hole 211 communicated with each other, the corresponding movable ceramic sheet 22 is rotated to make the second water inlet hole 222 communicated with the second water outlet channel 13, so as to realize the mutual switching of two different water outlet channels. The rotation of the movable ceramic sheet 22 is to control whether the first inlet hole 221/the second inlet hole 222 are communicated with the water through hole 211, and no limitation is made on whether the second inlet hole 222 is communicated with the second outlet channel 13 when the first inlet hole 221 is communicated with the water through hole 211, and whether the first inlet hole 221 is communicated with the first outlet channel 12 when the second inlet hole 222 is communicated with the water through hole 211.

In an embodiment of the present invention, the valve body housing 1 is an inverted hollow T-shaped structure, and is disposed along the same vertical direction corresponding to the water inlet channel 11 and the first water outlet channel 12, and the second water outlet channel 13 is disposed on one side of the middle portion of the valve body housing 1 approximately vertically. The water inlet channel 11 is connected with an external water inlet pipe, so that external water enters the interior of the valve body shell 1 through the water inlet channel 11 correspondingly, and then the water inlet channel 11 is switched to be communicated with the first water outlet channel 12 or the second water outlet channel 13 through the rotation of the movable ceramic chip 22 relative to the fixed ceramic chip 21, so that the water supply is controlled to be communicated with the first water outlet channel 12 or the second water outlet channel 13. It should be noted that the first water outlet channel 12 is connected to an external lower water outlet pipeline, and the second water outlet channel 13 is connected to an external shower head, and supplies water to different pipelines correspondingly, so that the functions are diversified.

In this embodiment, the top of the valve body housing 1 is provided with a fixing seat 3, the fixing seat 3 is fixed inside the valve body housing 1 by an external thread caulking, and the fixing seat 3 has a through hole with an internal thread, the through hole is communicated to the water inlet channel 11, and is connected and fixed with an external water outlet pipe through the through hole so as to correspondingly supply water into the valve body housing 1. Wherein, the external water inlet pipe is screwed and fixed at the top of the valve body shell 1 through the internal thread of the fixed seat 3, thereby supplying water to the bottom and the side part of the shell along the top. The fixed seat 3 is fixed in the valve body shell 1 through the external thread in a threaded manner, a sealing element 4 is arranged between the fixed seat 3 and the fixed ceramic piece 21, and the sealing element 4 is preferably an O-shaped sealing ring, so that a sealing space is formed between the fixed seat 3 and the fixed ceramic piece 21, and the external water supply is prevented from flowing backwards or leaking between the fixed ceramic piece 21 and the fixed seat 3.

In this embodiment, in particular, one end of the valve stem 23 is engaged with the movable ceramic piece 22 in a concave-convex manner, the other end is provided with a spline 232 and extends at least partially to the outside of the valve housing 1, and the first water outlet channel 12 is arranged inside the valve stem 23. Specifically, the upper end surface of the valve rod 23 is convexly provided with a convex portion 231 along the peripheral direction, the lower end surface of the movable tile 22 is correspondingly provided with a groove 223 which is matched with the convex portion 231 in a clamping manner, the valve rod 23 is driven to rotate, so that the convex portions 231 which are mutually clamped and matched abut against the groove 223, and the movable tile 22 is driven to rotate relative to the fixed tile 21. The spline 232 of the valve stem 23 extending to the exterior of the valve body housing 1 is provided with a driving portion (not shown) for the user to rotate the driving portion to rotate the moving ceramic chip 22 correspondingly. The driving portion is preferably a faucet switch which is fastened to the spline 232 of the valve rod 23, and rotating the faucet switch correspondingly drives the movable ceramic piece 22 to rotate, so as to switch the communication between the water inlet channel 11 and one of the water outlet channels.

The valve rod 23 is disposed in the valve housing 1 by sleeving a wear pad 5, and elastically abuts against the outer wall of the valve rod 23 and the inner wall of the valve housing 1. The wear pad 5 is preferably rubber to provide a resilient contact force when the valve stem 23 rotates within the valve housing 1 and to avoid wear problems caused by direct rotational contact between the valve stem 23 and the valve housing 1.

In this embodiment, the valve rod 23 rotates along its axial direction to correspondingly drive the movable ceramic pieces 22 to rotate relative to the fixed ceramic pieces 21, so as to control only the first water inlet 221 to communicate with the water through hole 211, or only the second water inlet 222 to communicate with the water through hole 211. Preferably, two water through holes 211 are provided and are arranged on the end surface of the fixed tile 21 at intervals along the horizontal direction, and the water through holes 211 are opened across the end surface of the fixed tile 21, so that the water inlet channel 11 is directly connected with the movable tile 22 through the water through holes 211. The first water inlet 221 and the second water inlet 222 are disposed on the end surface of the movable ceramic sheet 22 at an interval along the rotation path. The first water inlet hole 221 vertically penetrates through the end surface of the movable ceramic sheet 22, so as to be connected to the first water outlet channel 12. The second water inlet hole 222 forms a notch recessed inwards along the side wall, and the notch is connected to the second water outlet channel 13. The movable ceramic pieces 22 and the fixed ceramic pieces 21 are tightly laminated and attached to each other, so that the water supply of the water inlet channel 11 can only enter the first water outlet channel 12 or the second water outlet channel 13 through the water through holes 211 of the fixed ceramic pieces 21.

The working process of the embodiment of the present invention is described in detail as follows:

specifically referring to fig. 4 to 9, when the movable ceramic sheet 22 rotates until the first water inlet hole 221 faces one of the water through holes 211, the water supplied from the water inlet channel 11 is vertically conveyed to the first water outlet channel 12 through the water through holes 211 and the first water inlet hole 221, and at this time, the second water inlet hole 222 and the two water through holes 211 are disposed in a staggered manner, so that the fixed ceramic sheet 21 blocks the water supplied to the second water inlet hole 222. When the movable ceramic sheet 22 rotates to the second water inlet hole 222 opposite to one of the water through holes 211, the water supplied from the water inlet channel 11 is vertically conveyed to the second water outlet channel 13 through the water through holes 211 and the second water inlet hole 222, and at this time, the first water inlet hole 221 and the two water through holes 211 are configured in a staggered manner, so that the fixed ceramic sheet 21 blocks the water supplied to be conveyed into the first water inlet hole 221. The movable ceramic piece 22 is controlled to rotate relative to the fixed ceramic piece 21 by rotating the valve rod 23, so that one-time rotation switching is realized, only one of the first water inlet hole 221 or the second water inlet hole 222 is allowed to be communicated with the water through hole 211, and the water path switching is carried out between the two water outlet channels.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection.

Claims

1. A novel switching valve is characterized by comprising:

the valve body shell is internally provided with a water inlet channel which is arranged in a vertical direction relatively and positioned above, a first water outlet channel which is positioned below and a second water outlet channel which is arranged on one side of the valve body shell in a horizontal direction;

the water outlet switching device is arranged in the valve body shell and used for controlling and switching the water inlet channel to be communicated with only one of the first water outlet channel and the second water outlet channel;

the water outlet switching device comprises a fixed ceramic chip arranged opposite to the water inlet channel, a movable ceramic chip tightly matched with the fixed ceramic chip and a valve rod for driving the movable ceramic chip to rotate relative to the fixed ceramic chip; the fixed ceramic sheet is provided with a water through hole, the movable ceramic sheet is provided with a first water inlet hole selectively communicated with the first water outlet channel and a second water inlet hole selectively communicated with the second water outlet channel, and the first water inlet hole and the second water inlet hole are relatively independently arranged; wherein,

the fixed ceramic chip and the movable ceramic chip are embedded in the valve body shell, and water supply of the water inlet channel can only enter the first water outlet channel or the second water outlet channel through the water through holes of the fixed ceramic chip; the valve rod drives the movable ceramic sheet to rotate, and one rotation switching only allows one of the first water inlet hole or the second water inlet hole to be communicated with the water through hole.

2. The novel switching valve of claim 1, wherein the valve body housing is an inverted hollow T-shaped structure, the water inlet channel and the first water outlet channel are arranged along a same vertical direction, and the second water outlet channel is substantially vertically disposed at a middle side of the valve body housing.

3. The switching valve of claim 2, wherein the top of the valve body housing is provided with a fixing seat, the fixing seat is fixed inside the valve body housing by an external thread, and the fixing seat has a through hole with an internal thread, the through hole is communicated with the water inlet channel, and an external water outlet pipe is connected and fixed through the through hole so as to correspondingly supply water into the valve body housing.

4. The novel switching valve as claimed in claim 3, wherein a sealing member is disposed between the fixed seat and the fixed ceramic piece, and the sealing member is configured to form a sealed space between the fixed seat and the fixed ceramic piece.

5. The novel switching valve according to claim 1, wherein one end of the valve stem is engaged with the movable ceramic piece in a concave-convex manner, the other end of the valve stem is provided with splines and extends at least partially to the outside of the housing of the valve body, and the first water outlet channel is arranged inside the valve stem.

6. The novel switching valve according to claim 5, wherein a convex part is convexly arranged on the upper end surface of the valve rod along the circumferential direction, and a groove which is matched with the convex part in a clamping way is correspondingly formed on the lower end surface of the movable ceramic piece; the valve rod extends to a driving part is arranged on a spline outside the valve body shell and used for a user to rotate the driving part to correspondingly rotate the ceramic sheet.

7. The novel switching valve of claim 5, wherein the valve stem is correspondingly disposed in the valve body housing by being sleeved with a wear pad; the valve rod rotates along the axial direction of the valve rod correspondingly to drive the movable ceramic chip to rotate relative to the fixed ceramic chip so as to control only the first water inlet hole to be communicated with the water through hole or only the second water inlet hole to be communicated with the water through hole.

8. The novel switching valve according to claim 1, wherein when the first water inlet hole is communicated with the water through hole, the corresponding movable ceramic piece rotates to enable the first water inlet hole to be communicated with the first water outlet channel; when the second water inlet hole is communicated with the water through hole, the second water inlet hole is communicated with the second water outlet channel corresponding to the movable ceramic chip in a rotating mode.

9. The switching valve as claimed in claim 1, wherein two water holes are provided and spaced apart from each other in the horizontal direction on the end surface of the fixed ceramic piece, and the two water holes extend across the end surface of the fixed ceramic piece, so that the water inlet channel is directly connected to the movable ceramic piece through the water holes.

10. The novel switching valve according to claim 1, wherein the first water inlet hole vertically penetrates through the end surface of the movable ceramic sheet so as to be connected to the first water outlet channel; the second water inlet hole forms a notch which is inwards concave along the side wall, and the notch is connected to the second water outlet channel.