JPH1144370A - Directional control valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a directional control valve which can simplify an operation mechanism to switch raw water from a faucet, water purified by a water purifier or wash water flowed backward to the water purifier to four kinds of delivery modes to deliver them straightly or by a shower. SOLUTION: A rotary valve 25 is housed inside a valve main body case 21, a first valve hole 25e of this valve 25 and a raw water introducing port 21b are communicated with each other, raw water introduced into a first valve chamber R1 is sent to a water purifier, purified water is introduced into a second valve chamber R2, and the purified water is straightly delivered from a first delivery port 21f. The first delivery port 21f is closed by rotating the rotary valve 5, and the purified water is delivered by a shower from a second delivery port 21g by opening a spherical valve body 32. The rotary valve 25 is rotated, and the raw water is introduced to the second valve chamber R2 from the raw water introducing port 21b, and is delivered by the shower from the second delivery port 21g. The rotary valve 25 is rotated, the raw water is flowed backward to the water purifier from the second valve chamber R2, and this backflow wash water is straightly delivered from the first delivery port 21f.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching valve attached to, for example, a water tap.

[0002]

2. Description of the Related Art For example, in a kitchen, when a variety of uses such as using raw water with a single tap and using a water purifier are used, a switching valve is used. Conventionally, as this switching valve, the raw water is purified by a water purifier, and the purified water is discharged straight through the purified water straight, the purified water is showered to discharge the purified water, the raw water shower is discharged to the raw water shower and the raw water is returned to the water purifier. There has been proposed a type in which four types of discharge mode switching of a reverse cleaning straight in which cleaning water is discharged straight is performed by two switching levers. That is, one of the switching levers switches between the purified water discharge and the raw water shower, and the other switching lever switches between the purified water shower and the reverse cleaning straight.

[0003]

However, since the switching valve uses two switching levers, the structure is complicated, the number of parts is large, the manufacturing and assembling operations are troublesome, There is a problem that the operation of switching between the different ejection modes is troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, switch the fluid to at least four or more types of discharge modes, simplify the structure, reduce the number of parts, and perform the manufacturing and assembling operations. An object of the present invention is to provide a switching valve which can be easily performed, cost can be reduced, and a switching operation can be easily performed with one touch.

[0005]

In order to achieve the above object, the invention according to claim 1 is provided with an inlet (21b) for introducing a fluid from a faucet (13) for water supply or the like, and a valve accommodating chamber (21a) therein. ) Is formed, and the valve body case (21) is provided with a plurality of openings (21) connected from the valve storage chamber (21a) to an external device (16) such as a water purifier.
d, 21e) and a plurality of discharge ports (21f, 21g) for discharging fluid from the valve storage chamber (21a) to the outside, and are stored in the valve storage chamber (21a) of the valve body case (21). A rotary valve mechanism (K1) capable of switching a fluid discharged from the plurality of discharge ports (21f, 21g) to at least four types of discharge modes by reciprocating within a predetermined angle range; One switching operation mechanism (K2) that switches and rotates the valve mechanism (K1) stepwise to at least four types of positions.

According to a second aspect of the present invention, in the switching valve according to the first aspect, at least four types of discharge modes are a raw water straight line for directly discharging raw water from a faucet (13) and a raw water shower for discharging raw water by a shower. , Raw water straight shower, purify raw water with water purifier and discharge straight water, water purifier shower, water purifier straight shower, reverse flow of raw water back to the water purifier and wash reverse water The washing straight, the back washing shower, the back washing straight shower and the like are selected.

According to a third aspect of the present invention, in the switching valve according to the second aspect, the four kinds of discharge modes are a raw water shower,
A clean water straight, a clean water shower and a backwash straight.

According to a fourth aspect of the present invention, in the switching valve according to the third aspect, the valve housing chamber (21) of the valve body case (21) is provided.
a) is a rotary valve (25) constituting a rotary valve mechanism (K1).
And a spherical valve element (32) are housed therein, and the rotary valve (25) partitions the valve housing chamber (21a) into a first valve chamber (R1) and a second valve chamber (R2). (25a, 2)
5b) and a connecting body (25c) connecting the two partition bodies, and the valve body case (21) is provided with the first body.
And first and second openings (21d, 2) for communicating the second valve chamber (R1, R2) with a water purifier (16) as an external device.
1e), a first discharge port (21f) for directly discharging raw water or purified water in the second valve chamber (R2) to the outside, and a second discharge port (21g) for discharging in a shower mode. The valve chamber (R2) accommodates a spherical valve body (32) for opening and closing the first discharge port (21g), and the rotary valve (2).
5) In the first compartment (25a), the raw water inlet (2)
1b) to connect the raw water to the first and second valve holes (25e, 25f) capable of introducing raw water into the first valve chamber (R1) and the raw water inlet (21b). 2 valve room (R2)
And a first valve portion (25h) for closing the first discharge port (21f) corresponding to the first discharge port (21f) is provided. Second
Of the spherical valve element (3) between the compartments (25a, 25b).
2) A valve operating body (25i) for opening and closing the valve and a second valve portion (25j) capable of closing the second opening are provided.

According to a fifth aspect of the present invention, in the switching valve according to the fourth aspect, when the rotary valve (25) is maintained in the purified water straight discharge mode, the raw water inlet (21b) is provided.
And the first valve hole (25e) communicate with each other, the second valve hole (25f) is closed, and the second valve chamber (R2) is opened by the raw water passage (25g).
And the first discharge port (21f) communicate with each other, and the spherical valve element (32)
Is held in a state where the second discharge port (21g) is closed, and when the rotary valve (25) is rotated by a predetermined angle to switch to the clean water shower discharge mode, the second valve hole (25f) is connected to the raw water inlet. (21b), the first valve hole (25e) is closed, the first discharge port (21f) is closed by the first valve portion (25h), and the spherical valve body (32) is closed by the valve operating body (25i). Is lifted and the second discharge port (21g) is kept open, and the rotary valve (25) is rotated by a predetermined angle to switch to the raw water shower discharge mode. The holes (25e, 25f) are both closed, the first discharge port (21f) is closed by the first valve portion (25h), and the spherical valve body (3) is closed by the valve operating body (25i).
2) is held at the floating position, and the raw water inlet (21b) communicates with the second valve chamber (R2) through the raw water passage (25g).
When the second opening (21e) is kept closed by the second valve portion (25j), and the rotary valve (25) is rotated by a predetermined angle to switch to the backwash straight mode, the valve is activated. The body (25i) is separated from the spherical valve body (32), the second discharge port (21g) is closed by the spherical valve body (32), and the first valve hole (25e) communicates with the first discharge port (21f). The second valve hole (25f) is held in the closed position, the raw water passage (25g) is communicated with the raw water inlet (21b),
The second opening (21e) is closed by the second valve portion (25j).

[0010]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 4, the switching valve 11 of this embodiment is disposed in a kitchen, and is attached to the tip of a faucet 13 having an on-off valve 12. Further, a water purifier 16 as an external device is connected to the switching valve 11 via a first communication pipe 14 and a second communication pipe 15. By rotating an operation lever 39 of the switching valve 11, which will be described later, the raw water discharged from the faucet 13 can be switched to four discharge modes. That is, raw water is converted into water purifier 1
6. After purifying the water to 6 and purifying it, the water is discharged straight. The clean water straight discharge mode (hereinafter simply referred to as clean water straight), the clean water shower discharge mode that discharges clean water in the shower state (referred to as clean water shower), and the raw water in the shower state The raw water shower discharge mode (referred to as raw water shower) that discharges raw water to the water purifier 16
Is switched to a backwashing water straight discharge mode (called backwashing straight) in which the inside is washed and then discharged straight.

Next, the structure of the switching valve 11 will be described with reference to FIGS.
This will be described in detail with reference to FIGS. As shown in FIG. 1, the valve body case 21 is integrally formed of, for example, a synthetic resin, and has therein a valve housing chamber 2 having a bottomed horizontal cylindrical shape.
1a is formed to open the right end. A raw water inlet 21b for introducing raw water from the faucet 13 is formed at the upper center of the valve body case 21.
A screw cylinder 21c is integrally formed so as to surround 1b. A rubber sealing plate 22 is provided inside the screw cylinder 21c.
A connection fitting 23 for connecting to the faucet 13 is connected to the sealing plate 22 by a fastening ring 24 screwed to the screw cylinder 21c.

A rotary valve 25 constituting a rotary valve mechanism K1 is accommodated in a valve accommodating chamber 21a of the valve body case 21 so as to be reciprocally rotatable at a predetermined position within a predetermined angle (180 degrees in this embodiment). Have been. The rotary valve 25 has a first partition 25a having a bottomed horizontal cylindrical shape, a second partition 25b having a thick circular plate shape, and a columnar connection connecting the first partition 25a and the second partition 25b. A body 25c and an operation rod 25d protruding rightward from the valve accommodating chamber 21a are provided. In this embodiment, a chamber formed by the first partition 25a and the left space of the valve housing chamber 21a is defined as a first valve chamber R.
1, and a chamber formed by the first compartment 25a, the second compartment 25b, and the chamber on the right side of the valve accommodating chamber 21a is a second valve chamber R2. Valve accommodating chamber 21 of the first compartment 25a
a The first valve hole 25e is provided at two positions of the cylindrical portion which is in contact with the inner peripheral surface.
As shown in FIG. 2, the second valve hole 25f is formed at a predetermined angle in the circumferential direction, and the two valve holes 25e and 25f communicate with the raw water inlet 21b so that the raw water is guided to the first valve chamber R1. It has become.

The raw water guided to the first valve chamber R1 is supplied to the water purifier 16 through the first communication pipe 14 from a first opening 21d formed in the valve body case 21. The purified water purified by the water purifier 16 is guided into the second valve chamber R2 from a second opening 21e formed in the valve body case 21. In addition, on the outer peripheral surface of the cylindrical portion of the first partition 25a, the raw water from the raw water inlet 21b is turned at the rotation position where the communication between the first and second valve holes 25e and 25f and the raw water inlet 21b is cut off. 25g of the raw water passage for guiding the water to the second valve chamber R2.

The lower part of the valve body case 21 is provided with the second
The first discharge port 21f and the second discharge port 21g are formed adjacent to each other at a predetermined interval in a direction parallel to the axis of the rotary valve 25 so as to communicate with the valve chamber R2. The first and second valve holes 25e are provided on the outer peripheral surface of the cylindrical portion of the first partition 25a.
At an angular position where communication between 25f and the raw water inlet 21b is interrupted, a first valve portion 25h that closes the first outlet 21f is formed. A housing cylinder 21h is formed integrally with the lower part of the main body case 21 so as to correspond to the first discharge port 21f, and a straightening cylinder 30 is inserted into the housing cylinder 21h.
Raw water or purified water is discharged straight below the switching valve 11.

On the other hand, a rubber valve seat 31 is fitted in the second discharge port 21g, and a spherical valve body 32 constituting a rotary valve mechanism K1 is supported on the upper part of the valve seat 31 so as to be capable of contacting and releasing. Have been. The spherical valve element 32 has an open position where the spherical valve element 32 is lifted from the valve seat 31 by a valve operating body 25i connected and fixed between the first partition 25a and the second partition 25b of the rotary valve 25; The position can be switched between a closed position where the spherical valve element 32 closes the valve seat 31.

A valve operating body 25i formed on the rotary valve 25
In the raw water straight mode, the second opening 21e
Is integrally formed with a second valve portion 25j that can close the second valve portion 25j.
First partition 25a and second partition 25 of the rotary valve 25
b, the first and second seal rings 26 and 27
Are attached, and a third seal ring 28 and a fourth seal ring 29 are provided outside the first valve hole 25e and the second valve hole 25f.

In the lower part of the valve body case 21, a screw cylinder 21i is integrally formed concentrically with the housing cylinder 21h. A straightening plate 33 having a plurality of donut-shaped small holes 33a is horizontally fitted between the two cylinders 21h and 21i, and a shower cap 34 screwed into the screw cylinder 21i.
Thus, the position of the current plate 33 is regulated. In addition, a support portion 33b for abutting on the lower surface of the valve seat 31 to regulate the position of the valve seat 31 is integrally formed on the current plate 33. 35 and 36 are seal rings.

Next, the operation mechanism K2 for performing the turning operation of the turning valve 25 will be described. A position regulating body 37 having a hole 37a for projecting the operation rod 25d of the rotary valve 25 to the outside is fitted and fixed to the right end opening of the valve body case 21, and the second partition 25b of the rotary valve 25 is The rotating valve 25 is prevented from coming off by contacting the right side surface.

A ball holder 38 is provided on the outer peripheral surface of the operation rod 25d projecting from the center of the position regulating body 37 to the outside.
Is fitted to the boss 38a formed at the left end of the ball holder 38, and a locking recess 38b is formed to engage with a locking projection 37b formed on the position regulating body 37. The rotation of the holder 38 is prevented.

At the distal end of the operating rod 25d of the rotary valve 25, a cylindrical portion 3 integrally formed at the base end of the operating lever 39 is provided.
9a are fitted and fastened and fixed by screws 40. The operating lever 39 is integrally formed with a cylindrical portion 39b fitted to the outer peripheral surface of the ball holder 38, and a cylindrical portion 39c for accommodating the coil spring 41 is provided between the cylindrical portions 39a and 39b. It is formed so as to open toward one of the first to fourth locking holes 38c to 38f for locking the ball 43 formed in the ball holder 38. The ball 43 is pressed and locked in any of the first to fourth locking holes 38c to 38f by the pressing tool 42 urged by the coil spring 41.

The operating lever 39 is reciprocated in the range of 180 degrees, and the rotary valve 25 is held in the water purification straight mode with the ball 43 locked in the first locking hole 38c. . In a state where the ball 43 is locked in the second locking hole 38d by being rotated 90 degrees from the position,
The rotation valve 25 is held at the clean water shower position. further,
In a state where the ball 43 is locked in the third locking hole 38e,
When the rotary valve 25 is in the raw water shower position, the fourth locking hole 38f
The rotary valve 25 is held at the backwash shower position in a state where the ball 43 is locked at the second position.

Reference numeral 45 shown in FIG. 1 denotes a first valve chamber R1.
This is a relief valve that releases the pressure to the outside when the pressure becomes abnormally high. Next, the operation of the switching valve configured as described above will be described. (Pure water straight mode) FIGS. 1 to 3 and FIGS.
(B) shows a state in which the rotation valve 25 is rotated by the operation lever 39 of the operation mechanism K2 and is held in the water purification straight mode. In this mode, as shown in FIG. 7A, the first valve hole 25e communicates with the raw water inlet 21b,
The second valve hole 25f is closed by the inner peripheral surface of the valve storage chamber 21a, and the raw water passage 25g corresponds to the second valve chamber R2.
As shown in (b), the spherical valve body 32 closes the valve seat 31 of the second discharge port 21g, and the second opening 21e is open.

Therefore, the raw water from the faucet 13 flows from the raw water inlet 21a through the first valve hole 25e to the first valve chamber R1.
The water is guided from the first opening 21d to the first communication pipe 14 and the water purifier 16, where the water is purified. This purified water is supplied to the second communication pipe 15,
The second valve chamber R2 is guided through the second opening 21e to the second valve chamber R2.
It is discharged straight from the discharge port 21f to the outside. (Pure water shower mode) Next, when the operation lever 39 is rotated by 90 degrees and the rotation valve 25 is rotated by the same angle, the communication between the first valve hole 25e and the raw water inlet 21b as shown in FIG. Is shut off, the second valve hole 25f is communicated with the raw water inlet 21b, the raw water passage 25g is kept in an inactive state, and the first
The first discharge port 21f is closed by the valve portion 25h. Further, as shown in FIG. 8B, the spherical valve body 32 is lifted by the valve operating body 25i that rotates synchronously with the rotary valve 25, the second discharge port 21g is opened, and the second opening 21e is opened. Will be retained.

Therefore, the raw water from the faucet 13 flows from the raw water inlet 21a to the first valve chamber R1 through the second valve hole 25f,
The water is guided from the first opening 21d to the first communication pipe 14 and the water purifier 16, where the water is purified. This purified water is supplied to the second communication pipe 15,
It is guided to the second valve chamber R2 through the second opening 21e. This purified water is not discharged from the first discharge port 21f,
The water is discharged as a shower from a large number of small holes 34a of the shower cap 34 through the holes 33a of the current plate 33 from the second discharge ports 21f. (Raw water shower mode) Next, when the operation lever 39 is further rotated by 45 degrees, as shown in FIG. 9A, the first and second valve holes 25e, 25f are formed by the inner peripheral surface of the valve accommodating chamber 21a. Both are closed, the supply of the raw water from the first valve room R1 to the water purifier 16 is shut off, and the raw water passage 25g corresponds to the raw water inlet 21b, and the raw water is guided into the second valve room R2. The first discharge port 21f is held in a closed state by the one valve portion 25h. Further, in this mode, as shown in FIG. 9B, the spherical valve body 32 is still kept in a state where the valve seat 31 of the second discharge port 21f is opened, and the second valve portion 25 is opened.
j closes the second opening 21e, the second valve chamber R2
The raw water inside is discharged in the shower mode from the second discharge port 21g without flowing backward to the water purifier 16 side. (Backwash straight mode) Next, when the operation lever 39 is further rotated by 45 degrees, as shown in FIG.
The valve hole 25f is maintained in a closed state, and the first valve hole 25e communicates with the first discharge port 21f, so that the first valve chamber R
The supply of raw water from 1 to the water purifier 16 is maintained in a state of being cut off. Also, the raw water passage 25 g is connected to the raw water inlet 21.
The raw water is held in a state corresponding to b, and the raw water is guided into the second valve chamber R2. Further, in this mode, as shown in FIG. 10B, the valve operating body 25i separates from the spherical valve body 32, the valve body 32 closes the valve seat 31 of the second discharge port 21g, and the second valve portion 25j opens the second opening 21e. For this reason, the raw water in the second valve chamber R2 flows from the second opening 21e to the second
The water flows back to the water purifier 16 through the communication pipe 15 to clean the inside of the water purifier 16. Thereafter, the first communication pipe 14 flows backward through the first communication pipe 14 and is introduced into the first valve chamber R1, and the first valve hole 25e and the first discharge port 21 are provided.
The backwash water is discharged straight through f.

In this way, the operating lever 39 is
By reciprocating within the range of degrees, the desired discharge mode can be switched with one touch to a desired discharge mode among four types of discharge modes of a purified water straight, a purified water shower, a raw water shower, and a backwash straight.

Next, the operation and effect based on each configuration of the embodiment configured as described above will be listed. -In the said embodiment, the raw water which is pressure-fed from the raw water inlet 21b to the 1st and 2nd valve holes 25e and 25f of the rotary valve 25 is FIG. 7 (a), FIG. 8 (a), FIG. FIG. 10 (a)
In each of the discharge modes shown in (1) and (2), the rotary valve 25 acts in the radial direction, so that the rotary valve 25 does not receive the rotating power. Therefore, the elastic force of the coil spring 41 of the operation mechanism K2 for holding the rotary valve 25 at a predetermined position can be reduced.

In the above embodiment, the rotary valve mechanism K1 is constituted by the rotary valve 25 and the spherical valve body 32,
To the first and second partitioning bodies 25a and 25b, a connecting body 25c connecting the two partitioning bodies, a valve operating body 25i for opening and closing the spherical valve body 32, and a first valve section for opening and closing the first discharge port 21f. 2
5h and a second valve portion 25j that opens and closes the second opening 21e. First and second valve holes 25e and 25f are formed in the first partition 25a. Therefore, one operation lever 38 of the operation mechanism K2 can be used without increasing the number of parts.
Accordingly, the four types of discharge modes can be smoothly switched with one touch.

In the above embodiment, since the valve operating body 25i and the second valve portion 25j are formed integrally, the structure can be simplified. In the above-described embodiment, the distance between the cylindrical connecting body 25c and the valve operating body 25i is smaller than the diameter of the spherical valve body 32, so that the spherical valve body 32 is held near the position corresponding to the second discharge port 21g. Thus, the opening and closing of the valve body 32 can be reliably performed.

The present invention is not limited to the above embodiment, but can be embodied as follows. (1) In the above embodiment, the valve operating body 25i and the second valve portion 2
Although 5j is integrally formed, it must be formed separately.

(2) In the above-described embodiment, the spherical valve element 32 is used.
The discharge port 21g and the second opening 21e are connected to each other as shown in FIGS.
A plurality of valve units (not shown) that open and close at the opening and closing timings shown in FIG.

(3) In the above embodiment, the four types of discharge modes are switched. However, instead of this, a raw water straight, a raw water shower, a raw water straight shower, a purified water straight, a purified water shower, and a purified water straight.
At least four types of shower, backwash straight, backwash shower, backwash straight shower, etc. should be selected.

The technical ideas other than the claims that can be grasped from the above embodiment will be described below together with their effects. The switching valve according to claim 4, wherein the valve operating body 25 i and the second valve portion 25 j are integrally formed.

In the case of this switching valve, in addition to the above-described effects, when the rotary valve 25 is integrally formed of resin, the forming can be easily performed. The raw water passage (25g) according to claim 4 or 5, wherein the raw water passage (25g) is a second valve chamber (R) in a purified water straight.
A switching valve provided at a position connecting the raw water shower and the backwash straight at an angle of approximately 120 degrees in the circumferential direction so as to communicate with the raw water introduction port 21b at a position communicating the second discharge port 21f with the first discharge port 21f.

In this switching valve, in addition to the above-described effects, the number of passages formed can be reduced to simplify the structure. Further, in this specification, the fluid includes a liquid to which a chemical or a bathing agent is added in addition to tap water and well water, and other chemical liquids.

Further, the external device includes a water purifier, a water activating device, a medical device, a branch tap, and the like, in addition to the water purifier.

[0036]

As described in detail above, according to the first or second aspect of the invention, the fluid can be switched to at least four or more types of discharge modes, the structure is simplified, the number of parts is reduced, and the manufacturing is simplified. In addition, there is an effect that the assembling work can be easily performed, the cost can be reduced, and the switching operation can be easily performed with one touch.

According to the third aspect of the present invention, there is an effect that the switching operation of the four kinds of discharge modes of the raw water shower, the purified water straight, the purified water shower and the back washing straight can be easily performed with one touch.

According to the fourth or fifth aspect of the present invention, in addition to the effect of the third aspect of the present invention, the rotary valve mechanism is constituted by a rotary valve and a spherical valve body, so that the mechanism is simplified. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a central portion of a switching valve embodying the present invention.

FIG. 2 is a sectional view taken along line 1-1 of FIG. 1;

FIG. 3 is a sectional view taken along line 2-2 of FIG. 1;

FIG. 4 is a perspective view showing a use state of the switching valve.

FIG. 5 is an exploded perspective view of a valve body case and components assembled thereto.

FIG. 6 is an exploded perspective view of a rotary valve and an operation mechanism.

FIGS. 7A and 7B are cross-sectional views showing a state in which a rotary valve and a spherical valve element are switched to a purified water straight mode.

FIGS. 8A and 8B are cross-sectional views showing a state in which a rotary valve and a spherical valve element are switched to a clean water shower mode.

FIGS. 9A and 9B are cross-sectional views showing a state in which a rotary valve and a spherical valve element are switched to a raw water shower mode.

FIGS. 10A and 10B are cross-sectional views showing a state in which a rotary valve and a spherical valve element are switched to a backwash straight mode.

[Explanation of symbols]

11 switching valve, 21 valve body case, 21a valve housing chamber, 21b raw water inlet, 21d first opening, 21e
2nd opening, 21f ... 1st discharge port, 21g ... 2nd discharge port,
25 rotary valve, 25a first partition, 25b second partition, 25d operating rod, 25e first valve hole, 25f
2nd valve hole, 25g ... Raw water passage, 25h ... 1st valve part, 25
i: valve operating body, 25j: second valve portion, 32: spherical valve body, 3
7 Position regulating body, 38 Ball holder, 39 Operation lever, R1 First valve chamber, R2 Second valve chamber, K1 Rotating valve mechanism, K2 Operation mechanism.

Claims (5)

[Claims] An inlet (21b) for introducing a fluid from a faucet (13) for water supply or the like is provided, and a valve accommodating chamber (21) is provided therein.
a) forming the valve body case (21); and the valve body case (21) having a plurality of openings (21d, 21e) connected from the valve storage chamber (21a) to an external device (16) such as a water purifier. A plurality of discharge ports (21f, 21g) for discharging fluid from the valve housing chamber (21a) to the outside; and a predetermined angle range housed in the valve housing chamber (21a) of the valve body case (21). A rotary valve mechanism (K1) capable of switching a fluid discharged from the plurality of discharge ports (21f, 21g) to at least four types of discharge modes by reciprocating rotation within the rotary valve mechanism; ) With one switching operation mechanism (K2) that switches and rotates stepwise to at least four types of positions. 2. The switching valve according to claim 1, wherein at least four types of discharge modes include a raw water straight line for directly discharging raw water from a tap (13), a raw water shower for discharging raw water by a shower, a raw water straight shower, Purified water straight that purifies raw water with a water purifier and discharges it straight, water purifying shower, water purifying straight shower, backwashing straight that discharges raw water back to the water purifier and then backwashing water that is discharged straight backwater, backwashing shower And a switching valve selected from a backwashing straight shower and the like. 3. The switching valve according to claim 2, wherein the four types of discharge modes are a raw water shower, a purified water straight, a purified water shower, and a backwash straight. 4. The switching valve according to claim 3, wherein the valve housing chamber (21a) of the valve body case (21) has a rotary valve (25) and a spherical valve body (K1) constituting a rotary valve mechanism (K1). 32)
Is housed, and the rotary valve (25) is provided in the valve housing chamber (21).
a) includes first and second partitioning bodies (25a, 25b) that partition the first valve chamber (R1) and the second valve chamber (R2), and a connecting body (25c) that connects both the partitioning bodies. In addition, the valve body case (21) is provided with the first and second valve chambers (R
1, R2) and first and second openings (21d, 21e) communicating the water purifier (16) as an external device.
A first discharge port (21f) for directly discharging raw water or purified water in the valve chamber (R2) to the outside, and a second discharge port (21g) for discharging in a shower mode, and a second valve chamber (R2).
Has a spherical valve body (3) for opening and closing the first discharge port (21g).
2) is accommodated therein, and the first partition (2) of the rotary valve (25) is accommodated therein.
5a) first and second valve holes (25e, 25f) connected to the raw water inlet (21b) and capable of introducing raw water into the first valve chamber (R1); According to 21b), the raw water passage (25g) through which raw water can be introduced into the second valve chamber (R2), and the first discharge port (21f) corresponding to the first discharge port (21f) are closed. A first valve portion (25h) is provided, and the first and second compartments (25a, 25h) are provided.
Between b), a valve operating body (25i) for opening and closing the spherical valve body (32) and a second valve portion (2) capable of closing the second opening.
Switching valve provided with 5j). 5. The switching valve according to claim 4, wherein the raw water inlet (21b) and the first valve hole (25e) are provided when the rotary valve (25) is maintained in the purified water straight discharge mode.
And the second valve hole (25f) is closed, and the second valve chamber (R2) and the first discharge port (21) are closed by the raw water passage (25g).
f), and the spherical valve element (32) is connected to the second discharge port (21).
g) is kept closed, and when the rotary valve (25) is rotated by a predetermined angle to switch to the clean water shower discharge mode, the second valve hole (25f) communicates with the raw water inlet (21b). , The first valve hole (25e) is closed, the first discharge port (21f) is closed by the first valve portion (25h), and the spherical valve body (32) is lifted by the valve operating body (25i). When the discharge port (21g) is kept open and the rotary valve (25) is rotated by a predetermined angle to switch to the raw water shower discharge mode, the first and second valve holes (2) are opened.
5e, 25f) are both closed and the first discharge port (21f) is closed.
Is closed by the first valve portion (25h), and the valve operating body (2
5i) holds the spherical valve element (32) in the floating position,
The raw water inlet (21b) is connected to the second by the raw water passage (25g).
The valve chamber (R2) is communicated, the second opening (21e) is kept closed by the second valve portion (25j), and the rotary valve (25) is rotated by a predetermined angle to backwash. When the mode is switched to the straight mode, the valve operating body (25i) separates from the spherical valve body (32) and is moved by the spherical valve body (32).
The second discharge port (21g) is closed, and the first valve hole (25e)
Is communicated with the first discharge port (21f) and the second valve hole (25
f) is held in the closed position, the raw water passage (25g) is communicated with the raw water inlet (21b), and the second valve (25j) releases the second opening (21e). Switching valve.