JP2012219525A - Water purifier switching cock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switching cock which can switch between a normal water discharge, a shower water discharge and a purified water discharge, which can prevent the air causing bacterial contamination from entering with a simple structure, which demonstrates excellent water draining performance, and which can easily adjust pressures.SOLUTION: A cock body 10 has: a raw water port 11; a raw water supply port and a purified water inflow port; a purified water discharge port 14; a normal water discharge port 15; and a shower water port 16. A switching rotor 20 has: a normal water discharge path 21; a shower water discharge path 22; and a purified water discharge path 23, respectively in a circumferential direction. A pressure control valve 70 is provided in the raw water port 11 of the cock body 10, the pressure control valve 70 comprising: a base body part; an annular plate part integrated in the base body part; an annular tilting part integrated in an inner end of the annular plate part so as to tilt its tip toward a primary side of a flow channel; and a through-hole formed on the tip side of the annular tilting part.

Description

  The present invention relates to a water purifier switching cock that is attached to a water faucet or the like and is also connected to the water purifier side, in particular, for purifying water from the purifier, normal discharge of tap water, and shower discharge of tap water. The present invention relates to a water purifier switching cock capable of selectively performing three types of discharge.

  In recent years, various water purifiers that purify tap water to produce so-called “delicious water” have been proposed, and such water purifiers are generally used in kitchens and the like. Since this type of water purifier must have a filter inside, there are few that are directly attached to the faucet of a water supply. Generally, for example, a switching valve as shown in Patent Document 1 is used. Used to be connected to a faucet or the like.

  The “switching valve for water purifier” disclosed in Patent Document 1 is configured to “provide a raw water with a constant pressure to the water purifier main body even when the pressure of the supplied raw water becomes high, and improve the sliding state to each configuration. It is made for the purpose of providing a water purifier switching valve that does not cause destruction of members.

  According to the switching valve of this patent document 1, the purified water position (purified water discharge) which supplies the raw water supplied from a water supply to a water purifier main body, the raw water position (normal discharge) to pass through, and the shower position (it discharges as a shower) It can be considered that the above-mentioned purpose can be achieved.

However, since the switching valve of Patent Document 1 exhibits a switching function by sliding contact between the cock case (5) and the change valve (17) fitted therein, the selection of the material is required. Not only must it be done strictly, but the cockcase (5) and change valve (17) must be manufactured fairly strictly.

In addition, in the switching valve of this patent document 1, the raw water from a water supply is only sent to the water purifier side, and purified water is discharged from another purified water discharge not formed in the switching valve. It has become a necessity. Since this switching valve has a discharge port that can perform normal discharge and shower discharge, it is convenient if there is a purified water discharge port in the vicinity thereof.

In general, tap water contains various impurities that adhere to the surface of internal parts of faucets and faucets. When these impurities adhere to internal parts, It is known that the movement of In particular, in the case of a structure having many sliding surfaces such as the switching valve of Patent Document 1, the movement of each part is deteriorated by impurities in tap water, and the operability of the handle is deteriorated in a very short time. Many.

Furthermore, generally, since the purified water discharge is not always performed, the purified water purified by the water purifier is stored in the pipe until the discharge. If miscellaneous bacteria are mixed and propagated in the stored purified water, the purified water is no longer purified water. The biggest cause of contamination is that air containing the contamination is mixed in the purified water, and this contamination of air often occurs in various switching valves as described above. This is because when water is stopped at the switching valve, air enters instead of water.

Furthermore, fluids such as city gas and tap water are distributed from a supply source at a constant pressure, and a water purifier must be supplied at an optimum pressure. In other words, tap water is supplied to each house at a relatively large pressure, and the supply pressure varies depending on the usage status of each door. The optimum pressure is often set lower than the supply pressure so that it can function even when the supply pressure is greatly reduced.

For this reason, in general, a pressure regulating valve device having a pressure regulating valve for reducing the pressure of the supplied tap water according to the equipment used is used in the water pipe. In the conventional pressure regulating valve device, the piston valve body is integrated, and the piston can be moved in the flow path by the elastic force of the spring. When a high pressure is applied, the piston is moved and integrated with the piston valve body. In general, a through hole is narrowed by a valve body that is adjusted so as to adjust pressure and flow rate. A check valve may be interposed in such a pressure regulating valve device.

The pressure regulating valve device having the above structure is complicated in its structure, and a place for storing the piston and the spring must be secured in the pipe line. The pressure regulating valve device must be constructed as a separate component that is retrofitted to a pipeline such as a water pipe, and the manufacturing and installation work for the water pipe or the like becomes large.

Japanese Patent Laid-Open No. 7-108257

As a result of the examination of the above prior art, the present inventors have found that the following points must be improved or improved in this type of water purifier switching cock.
(1) Normal discharge of raw water, shower discharge, and discharge of purified water should be performed near the faucet.
(2) This type of water purifier switching cock is used to switch the method of discharging raw water such as tap water containing impurities. To make the switching operation stable for a long period of time with a structure that is as simple as possible without affecting the performance.
(3) Even with a simple structure, air that causes contamination is prevented from easily entering the cock.
(4) Discharge immediately stops after normal discharge, shower discharge, and clean water discharge (water draining is good).
(5) The fluid pressure should be easily adjusted.

The present invention has been made in view of the above-described actual situation in the water purifier switching cock, and the problem to be solved is that it is possible to perform three types of switching of normal discharge, shower discharge, and purified water discharge, and the structure is It is an object of the present invention to provide a switching cock that can easily prevent the entry of air that causes contamination with bacteria, and that drains well after use and can easily adjust the pressure.

In order to solve the above problems, the means taken by the present invention will be described with reference numerals used in the description of embodiments described later.
“The switching rotor 20 is rotatably and liquid-tightly stored in the storage space 10 a of the cock body 10, and the switching rotor 20 is rotated by the operation of the switching handle 50, whereby the raw water from the cock body 10 is A water purification cock 100 that can selectively perform normal discharge, shower discharge, or discharge of purified water,
The raw water inlet 11 connected to the faucet 210 or the like of the water tap, the raw water supply inlet 12 and the purified water inlet 13 respectively connected to the water supply inlet and the purified water outlet on the water purifier 300 side, and the purified water inlet 13 And a normal water discharge port 15 located near the raw water port 11, and a shower port 16 located around the normal water discharge port 15,
The switching rotor 20 includes a normal discharge passage 21 that selectively communicates the raw water port 11 and the normal discharge port 15, a shower discharge passage 22 that selectively communicates the raw water port 11 and the shower port 16, and a purified water inlet. 13 and a purified water discharge passage 23 for selectively communicating with the purified water discharge port 14 in the circumferential direction,
Further, the base body 71 is accommodated in the raw water port 11 of the cock body 10 so as to be shrinkable in a direction orthogonal to the flow path of the raw water port 11, and a base part 71 serving as a wall parallel to the flow path is provided. An annular plate portion 72 that is integrated on the secondary side, an annular inclined portion 73 that is integrated with the inner end of the annular plate portion 72 and the tip 73a is inclined toward the primary side of the flow path, and the annular inclined portion 73. The water purifier switching cock 100 is provided with a pressure regulating valve 70 configured by a through hole 74 formed on the tip 73a side of the water purifier. "
It is.

  That is, the water purifier switching cock 100 according to the present invention is attached to the faucet 210 or the like of the faucet 200 using the mounting tool 60 as shown in FIGS. Is a separate body, for example, a water supply port (an inlet to which raw water to be purified) is supplied and a water purification port (an outlet for discharging the purified water generated in the water purifier 300) disposed in a kitchen sink. ) And a connection hose 310 as shown in FIGS. 1 and 2. And when this faucet switching cock 100 operates the faucet 200 and feeds the tap water etc. from the faucet 210, the water purifier switching cock 100 is normally discharged and showered depending on the position of the switching handle 50 of the purifier switching cock 100. The discharge or the clean water discharge can be selectively performed at one place in the vicinity of the faucet 210.

For this purpose, in the water purifier switching cock 100, first, the switching rotator 20 is rotatably housed in the cock body 10, and the switching handle 50 provided at the outer end of the switching rotator 20 is rotated. It is possible to easily select normal discharge, shower discharge, and purified water discharge by the operation of the movement. Specifically, as shown in FIG. 4B, the cock body 10 has the raw water port 11 provided at the upper end thereof to a faucet 210 (usually opening downward) of the faucet 200. By connecting, it is formed as having a cylindrical storage space 10a whose axis is in the horizontal direction, and is substantially columnar in shape and rotated about the axis in the storage space 10a. By storing the switching rotator 20 in the lateral direction, the water purifier switching cock 100 is configured.

Of course, the water purifier switching cock 100 performs a selection operation of normal discharge, shower discharge or purified water discharge by the rotation of the switching rotator 20, so that the raw water inlet 11, The six openings of the raw water supply port 12, the purified water inlet 13, the purified water discharge port 14, the normal discharge port 15 and the shower port 16 are formed, and the normal discharge passage 21 for selectively communicating each of these openings, the shower The discharge passage 22 and the purified water discharge passage 23 are formed on the switching rotator 20 side as shown in FIG.

The selective communication by the normal discharge passage 21, the shower discharge passage 22 and the purified water discharge passage 23 is performed by the first ball valve body 41 and the second ball valve as in the water purifier switching cock 100 according to the present embodiment described below. The body 42 and the third ball valve body 43 may be used, but may be performed by sliding contact between the cock body 10 and the switching rotator 20. Further, since the switching rotator 20 must perform the selective communication by rotating around the horizontal axis, the normal discharge passage 21, the shower discharge passage 22, and the purified water discharge passage 23 are The switching rotator 20 must be formed in the circumferential direction.

In the water purifier switching cock 100, selective communication through the normal discharge passage 21, the shower discharge passage 22, and the purified water discharge passage 23 is performed using a first ball valve body 41, a second ball valve body 42, and a third ball valve body 43. As shown in FIGS. 8 and 3, these seats are normally seated on the valve seat 31, the shower valve seat 32, and the water purification valve seat 33, respectively, and the valve holes are closed, so that draining is performed very efficiently. Thus, the water from the normal discharge passage 21, the shower discharge passage 22 or the purified water discharge passage 23 is completely stopped. This is because the normal valve seat 31, the shower valve seat 32, and the water purification valve seat 33 have a dish-shaped seat surface centered on the valve hole, and the first ball valve body 41, This is because the second ball valve body 42 and the third ball valve body 43g contact each other by gravity.

In the water purifier switching cock 100, the switching rotator 20 disposed in the lateral direction is placed in the storage space 10a in which the axial center of the cock body 10 is positioned in the lateral direction. Since it is accommodated so as to be rotatable through an annular packing 27 provided in the circumferential direction, the sliding contact between the cock main body 10 and the switching rotor 20 is made around each packing 27 as an annular line. It will be. Each packing 27 has an annular shape, and the normal discharge passage 21, the shower discharge passage 22, and the purified water discharge passage 23 are annularly formed between the packings 27 in the circumferential direction of the outer periphery of the switching rotor 20. Since it is located, the purified water discharge passage 23 is completely separated from other passages, and the tap water is not mixed into the purified water.

Now, the pressure regulating valve 70 constituting the pressure regulating valve device 100 is integrally formed of an elastic material such as synthetic rubber, and is housed in the raw water inlet 11 as shown in FIG. 3, for example. Is. In a normal state (a state in which no force is applied), it is a substantially disk shape as shown in FIGS. 6 (a) and 6 (b).

When fluid (tap water) is passed through the raw water port 11 through the pressure regulating valve 70, the upstream pressure is changed to the annular plate portion 72 and the annular inclined portion 73 as shown in FIG. This is applied to the upper side of the figure. If this water pressure does not exceed the elastic deformation range of the elastic material constituting the pressure regulating valve 70, as shown in FIG. 6B, the annular plate portion 72 and the annular inclined portion 73 are nothing. It does not change. In this case, when the diameter of the through hole 74 formed by the tip portion 73a of the inclined annular portion 73 and D _1, the D ₁ does not change.

When the tap water pressure exceeds a certain range, the annular inclined portion 73 receiving the pressure is elastically deformed as shown in FIG. That is, the annular inclined portion 73 that is literally in an inclined state is pressed by the pressure of tap water flowing through the raw water inlet 11 and deformed to a state close to flatness. At this time, the base portion 71 of the pressure regulating valve 70 slightly bulges outward, but the annular plate portion 72 is not deformed because it is supported on the raw water inlet 11 side.

As a result, the diameter of the through-hole 74 by the tip 73a of the annular inclined portion 73 that has become flat becomes D ₂ shown in FIG. 6C, and this relationship D ₂ <D ₁ is satisfied. That is, the diameter of the through hole 74 is slightly reduced by the annular inclined portion 73 crushed by the pressure of the tap water, the pressure of the tap water flowing to the secondary side is reduced, and the amount of flowing water is reduced accordingly. is there.

Although the water purifier 300 is attached to the secondary side of the raw water inlet 11, in general, the water purifier 300 can sufficiently exhibit its water purifying function by flowing tap water gently through it. is there. That is, even if a too high pressure or a predetermined amount or more of water is supplied, the water purifier 300 does not sufficiently perform its water purifying function, but the pressure regulating valve 70 is disposed on the primary side of the water purifier 300. This eliminates such a problem.

Further, according to the pressure adjusting valve 70, the pressure of the fluid supplied to the water purifier 300, for example, tap water, is adjusted to an appropriate pressure, so that no extra tap water is sent in. In other words, the pressure regulating valve 70 is a measure for saving water.

And since this pressure regulating valve 70 is a small annular | circular shaped thing as shown in FIG. 6, it cannot be overemphasized that this can be easily accommodated in the raw water inlet 11, and the structure of the raw water inlet 11 itself. Can be very simple.

The pressure regulating valve 70 constituting the pressure regulating valve 70 has an annular inclined portion 73 within a range surrounded by the base portion 71, so that the annular regulating portion constituting the outer frame is formed. There is no part which protrudes from the base part 71, and the accommodation with respect to the inside of the raw water inlet 11 can be made favorable.

Therefore, in the water purifier switching cock 100 according to the present invention, even if impurities in the tap water adhere to the packing 27 and the like, the rotation operation of the switching rotor 20 can be stably performed for a long period of time, Of course, there is no mixing of tap water into the clean water for a long period of time, and the drainage after use is good and the pressure can be easily adjusted.

Moreover, in the water purifier switching cock 100 according to the present invention configured as described above, normal discharge, shower discharge, or purified water discharge can be performed in the vicinity of the faucet 210. Since the switching rotator 20 having the normal discharge passage 21, the shower discharge passage 22 and the purified water discharge passage 23 can be rotatably accommodated in the cock body 10 having six openings, the overall structure is very simple. It can be made into a compact one.

As described above, in the present invention,
“The switching rotor 20 is rotatably and liquid-tightly stored in the storage space 10 a of the cock body 10, and the switching rotor 20 is rotated by the operation of the switching handle 50, whereby the raw water from the cock body 10 is A water purification cock 100 that can selectively perform normal discharge, shower discharge, or discharge of purified water,
The raw water inlet 11 connected to the faucet 210 or the like of the water tap, the raw water supply inlet 12 and the purified water inlet 13 respectively connected to the water supply inlet and the purified water outlet on the water purifier 300 side, and the purified water inlet 13 And a normal water discharge port 15 located near the raw water port 11, and a shower port 16 located around the normal water discharge port 15,
The switching rotor 20 includes a normal discharge passage 21 that selectively communicates the raw water port 11 and the normal discharge port 15, a shower discharge passage 22 that selectively communicates the raw water port 11 and the shower port 16, and a purified water inlet. 13 and a purified water discharge passage 23 for selectively communicating with the purified water discharge port 14 in the circumferential direction,
Further, the base body 71 is accommodated in the raw water port 11 of the cock body 10 so as to be shrinkable in a direction orthogonal to the flow path of the raw water port 11, and a base part 71 serving as a wall parallel to the flow path is provided. An annular plate portion 72 that is integrated on the secondary side, an annular inclined portion 73 that is integrated with the inner end of the annular plate portion 72 and the tip 73a is inclined toward the primary side of the flow path, and the annular inclined portion 73. Provided with a pressure regulating valve 70 constituted by a through hole 74 formed on the tip 73a side "
There is a feature in the structure, and by this, it is possible to perform three types of switching, normal discharge, shower discharge, and purified water discharge, and the structure is simple and prevents intrusion of air that causes contamination with bacteria. In addition, it is possible to provide the switching cock 100 which can be drained after use and can easily adjust the pressure.

It is a perspective view which shows the state which connected the switching cock for water purifiers of this invention to the faucet of the faucet, and connected the water purifier to this switching cock for water purifiers. It is a perspective view which shows the state which is going to connect the connection hose from a water purifier to the back side of the switching cock for the water purifiers. It is an expansion longitudinal cross-sectional view of the switching cock for water purifiers at the time of normal discharge. The cock main body which comprises the switching cock for water purifiers which concerns on this invention is shown, (a) is a top view, (b) is a longitudinal cross-sectional view, (c) is a seat surface figure. The switching rotator which comprises the switching cock for water purifiers is shown, (a) is a top view, (b) is a right view, (c) is a front view, (d) is in (c). Sectional drawing seen along line 3-3, (e) is a transverse sectional view seen along line 4-4 in (c). The pressure control valve which comprises the switching cock for water purifiers which concerns on this invention is shown, (a) is a perspective view of a pressure control valve, (b) is sectional drawing when the pressure is not applied to a pressure control valve, (c) ) Is a cross-sectional view when a high pressure is applied to the pressure regulating valve. It is a longitudinal cross-sectional view of the switching cock for water purifiers at the time of shower discharge. It is a longitudinal cross-sectional view of the switching cock for water purifiers at the time of water discharge. It is a cross-sectional view of the water purifier switching cock during normal discharge. It is a cross-sectional view of the water purifier switching cock at the time of shower discharge. It is a cross-sectional view of the water purifier switching cock when water is discharged.

  The water purifier switching cock 100 according to the embodiment of the present invention configured as described above will be described.

FIG. 1 shows a state in which the water purifier switching cock 100 according to the present invention is used by being attached to the faucet 210 of the faucet 200. The water purifier switching cock 100 is separate from the above and further in the sink. It connects with the water purifier 300 installed in other places, such as via the two connection hoses 310. Therefore, as shown in FIG. 2, the raw | natural water supply port 12 and the purified water inflow port 13 are protrudingly formed in the back side of the cock main body 10 which comprises this water purifier switching cock 100, These A connection hose 310 is connected to each of the raw water supply port 12 and the purified water inlet 13, and the other end of each connection hose 310 is connected to a water supply port and a water purification port of the water purifier 300 as shown in FIG. Is.

For example, as shown in FIG. 3, the water purifier switching cock 100 is connected to the faucet 210 by attaching a fixture 60 to the raw water spout 11 formed at the upper end of the cock main body 10 constituting the water purifier switching cock 100. It can be installed via the fixture 60. Of course, since the shape of the faucet 210 is various, a fixture 60 corresponding to the shape of the faucet 210 is prepared so that the water purifier switching cock 100 can be attached to any faucet 210. It has become.

By doing in this way, as for the cock main body 10 of the said switching cock 100 for water purifiers, the axial center of the cylindrical storage space 10a will be arrange | positioned substantially horizontal. If a switching rotator 20 described later is movably stored in the storage space 10a, the switching rotator 20 is also arranged so that its axis is substantially horizontal.

Now, the water purifier switching cock 100 has an external appearance of the cock main body 10 as shown in FIGS. 1 and 2, the switching rotor 20 accommodated and supported in a substantially horizontal shape by the cock main body 10, and the switching circuit. A switching handle 50 integrated with an outer end of the moving element 20 (right end as shown in FIG. 3 in this embodiment) is a basic component.

As shown in FIG. 4, the cock body 10 has a cylindrical shape having a horizontal columnar space for accommodating the switching rotator 20, and is a raw water inlet connected to a tap faucet 210 or the like. 11, the raw water supply port 12 and the purified water inlet 13 respectively connected to the water supply port and the purified water inlet on the water purifier 300 side, the purified water discharge port 14 located in the vicinity of the purified water inlet 13, and the vicinity of the raw water port 11 A normal discharge port 15 and a shower port 16 positioned around the normal discharge port 15.

As shown in FIG. 1, the raw water supply port 12 of the cock body 10 is connected to the water purifier 300 via the connection hose 310. For example, as shown in FIGS. It is always in communication with the water inlet 11. Therefore, there is a possibility that the raw water at the abnormal pressure is supplied to the water purifier 300 side through the raw water supply port 12 or the raw water on the water purifier 300 side flows back into the cock body 10. In the water purifier switching cock 100 of the embodiment, as shown in FIG. 9 or FIG. 10, such a problem is prevented by providing a metering stopper 12 a in the raw water supply port 12. Of course, as shown in FIG. 3, the rectifying metal fitting 15a is accommodated in the normal discharge port 15 of the cock body 10, so that normal discharge can be performed without scattering of water. The same rectifying metal fitting 15 a is also provided in the purified water discharge port 14.

The switching rotator 20 rotatably accommodated in the cock body 10 is as shown in FIG. 5, and includes a normal discharge passage 21 that selectively communicates the raw water port 11 and the normal discharge port 15. A shower discharge passage 22 that selectively communicates the raw water port 11 and the shower port 16 and a purified water discharge passage 23 that selectively communicates the purified water inlet 13 and the purified water discharge port 14 in the circumferential direction. It is. Of course, the switching rotator 20 is liquid-tightly accommodated in the cock body 10 and is rotated about the lateral axis, so that the right side of the shower discharge passage 22 and the normal discharge passage 21 are provided. An annular groove for accommodating the ring-shaped packing 27 is formed between the water and the purified water discharge passage 23.

When the switching rotator 20 is housed in the cock body 10, the right side of the shower discharge passage 22 and the normal discharge passage 21 and the purified water discharge passage 23 are provided by the annular packing 27 as shown in FIG. 3. The intermediate seal is performed in a state where it can be performed with a light torque particularly in the circumferential direction.

In addition, when the switching rotator 20 is rotated in the cock body 10 attached to the right end thereof, it also lifts the ball valve bodies 41 to 43 while scooping them up from the valve seats 31 to 33. Lifting portions 24 to 26 are formed in the discharge passages 21 to 23, respectively. Each of the lifting portions 24 to 26 needs to be configured to have a cylindrical shape when viewed from one end side, as shown in FIG. The specific configuration is shown in FIGS. 5 (a), 5 (c) and 5 (e).

And the valve seats 31-33 are each arrange | positioned just above the purified water discharge port 14, the normal discharge port 15, and the shower port 16 of the cock main body 10, and in this embodiment, on the switching rotator 20 is. Since it is divided as described above by the two packings 27, the normal valve seat 31 and the shower valve seat 32 are integrally formed, but these and the water purification valve seat 33 are formed separately. is there. Of course, the valve holes 31a32a and 33a of the valve seats 31 to 33 are circular so as to be completely received and closed by the ball valve bodies 41 to 43, respectively.

In other words, the water purifier switching cock 100 opens the normal discharge port 15, the shower port 16, and the purified water discharge port 14 vertically downward, and the normal discharge port 15, the shower port 16, and the purified water discharge port. Valve seats 31, 32, and 33 are provided immediately above 14, and ball valve bodies 41, 42, and 43 are rotatably accommodated in the discharge passages 21, 22, and 23 of the switching rotor 20. When the valve bodies 41, 42, 43 are placed on the valve seats 31, 32, 33 by their own weights, the valve ports of the valve seats are pierced and the discharge passages 21, 22 of the switching rotor 20. A lifting portion 24, 25, and 26 that selectively lifts the corresponding ball valve body 41, 42, and 43 from the valve seats 31, 32, and 33 is formed in 23.

Each ball valve body 41 to 43 in the present embodiment is made of synthetic rubber as a material so that at least the surface is soft. The reason is that these ball valve elements 41 to 43 are placed on the valve seats 31 to 33 only by their own weights, and at that time, the valve holes 31a, 32a or 33a can be reliably closed. It is for doing so. For the same reason, each of the valve seats 31 to 33 is also made of a relatively soft synthetic resin.

That is, in this water purifier switching cock 100, the normal discharge, the shower discharge and the selective discharge of the purified water discharge are respectively stored in the normal discharge passage 21, the shower discharge passage 22 and the purified water discharge passage 23 on the switching rotator 20 side. This is performed by the one ball valve body 41, the second ball valve body 42, and the third ball valve body 43. In order to effectively block the passage by the first ball valve body 41, the second ball valve body 42, and the third ball valve body 43 by their own weights, the purified water discharge port 14, the normal discharge The outlet 15 and the shower port 16 are opened downward, and the water purifying valve seat 33, the normal valve seat 31 and the shower valve seat 32 are opened in a horizontal state, and each of these openings (valve ports) is opened. The one ball valve body 41, the second ball valve body 42 and the third ball valve body 43 can be reliably closed.

Of course, in order to secure the case where the first ball valve body 41, the second ball valve body 42 and the third ball valve body 43 do not have to be closed, that is, the purified water discharge port 14, the normal discharge port 15 or the shower port. When it is necessary to open 16 respectively, the first ball valve body 41, the second ball valve body 42 or the third ball valve body 43 is removed from each water purification valve seat 33, normal valve seat 31 or shower valve seat 32. The first pulling portion 24, the second pulling portion 25, and the third pulling portion 26 that perform the pulling are performed in the normal discharge passage 21, the shower discharge passage 22, and the purified water discharge passage 23 on the switching rotator 20 side. Are formed respectively.

  And in the raw | natural water port 11 formed in the upper part of the cock main body 10 which comprises this water purifier switching cock 100, as shown in FIG.3, FIG7 and FIG.8, the pressure regulation valve 70 is accommodated. . The pressure regulating valve 70 is fixed to the cock body 10 by a fitting 60 screwed to the raw water port 11, and the raw water port 11 has a diameter slightly larger than the diameter of the pressure regulating valve 70 that is not deformed. It is as.

In this embodiment of the pressure regulating valve 70, synthetic rubber such as silicon rubber or propylene rubber is used as a material, and it is integrally formed with a diameter of about 1.8 cm and a thickness of about 3 mm. And as shown to (a)-(b) of FIG. 6, this pressure regulation valve 70 is accommodated in the accommodating part 21 so that a contraction is possible in the direction orthogonal to a flow path, and the wall parallel to a flow path is carried out. A base portion 71, an annular plate portion 72 integrated on the secondary side of the base portion 71, and an inner end of the annular plate portion 72 so that the tip 13a is inclined toward the primary side of the flow path. An annular inclined portion 73 is formed, and a through hole 74 formed on the tip 13a side of the annular inclined portion 73 is provided.

Further, as shown in FIG. 3, for example, the pressure regulating valve 70 is formed so that the tip 73 a of the annular inclined portion 73 when no force is applied completely fits in the raw water inlet 11. is there. By doing in this way, when bending and inserting in the raw water inlet 11, it can carry out without any trouble and can perform an exchange operation easily.

Now, with regard to the water purifier switching cock 100 according to this embodiment, when normal discharge, shower discharge or purified water discharge is performed, how each member is formed will be described with reference to the drawings. It is as follows.

(When normal discharge is performed)
In this water purifier switching cock 100, when normal discharge is performed, it is as shown in FIG. That is, when the switching handle 50 is rotated to the front side of the water purifier switching cock 100, the first ball valve body 41 in the normal discharge passage 21 is first lifted to lift the normal valve seat 31 as shown in FIG. The portion 24 is located below the first ball valve body 41, and the second lifting portion 25 and the third lifting portion 26 are located above the second ball valve body 42 and the third ball valve body 43. Become. Accordingly, the normal discharge passage 21 and the normal discharge port 15 are communicated with each other, and the communication between the shower discharge passage 22 and the shower port 16 and the purified water discharge passage 23 and the purified water discharge port 14 is the second bulb valve body 42. The raw water that is blocked by the third ball valve body 43 and supplied to the raw water port 11 side is discharged from the normal discharge port 15 through the normal discharge passage 21.

In the water purifier switching cock 100, the raw water port 11 is always in communication with the normal discharge passage 21 and the shower discharge passage 22, and the raw water port 11 is connected to the raw water supply port 12 as shown in FIGS. Also communicate. Accordingly, the pressure of the raw water supplied from the faucet 210 of the faucet 200 is always applied to the normal discharge passage 21 and the shower discharge passage 22 and also to the raw water supply port 12 side. However, since the metering tap 12a is provided in the raw water supply port 12 and the purified water discharge port 14 is not opened, the raw water from the faucet 210 does not flow into the water purifier 300. Water does not flow backward from the water purifier 300 to the water purifier switching cock 100 side.

The important thing at the time of this normal discharge and at the time of shower discharge described below is that air cannot enter from the purified water discharge port 14. That is, the purified water discharge port 14 of the water purifier switching cock 100 opens downward, and the valve port 33a of the purified water valve seat 33 is a third ball valve riding on the purified water valve seat 33. The third ball in the clean water discharge passage 23 is pierced by the body 43 and a certain amount of water pressure from the faucet 210 is applied to the third ball valve body 43 through the metering tap 12a in the raw water supply port 12. The valve body 43 is in close contact with the water purification valve seat 33 unless the valve body 43 is forcibly pulled up from the water purification valve seat 33 by the third lifting portion 26.

Accordingly, during this normal discharge, air does not enter from the purified water discharge port 14 which is not used in the connection hose 310 or the water purifier 300 as well as the purified water discharge passage 23. There is no breeding of germs in the clean water. That is, even if the purified water discharge port 14 is not opened for a long period of time, various germs do not propagate in the water in the purified water discharge passage 23 and the connection hose 310, and so-called “rot” does not occur.

(When shower discharge is performed)
In this water purifier switching cock 100, the state of shower discharge is shown in FIG. 7 and FIG. 10, and in the case of the embodiment, the switching handle 50 is directed downward. At this time, as shown in FIG. 7, only the second ball valve body 42 is lifted by the second lifting portion 25 and is separated from the shower valve seat 32. The body 41 is placed on the normal valve seat 31 and the third ball valve body 43 is placed on the water purification valve seat 33.

As a result, the raw water port 11 to which the faucet 210 is connected communicates with the shower port 16 through the shower discharge passage 22, so that the raw water is discharged from the shower port 16 in the shower state.

Of course, in this case as well, since the purified water discharge port 14 is not opened due to the presence of the third ball valve body 43, it is natural that the purified water is not discharged from the raw water supply port 12 to the water purifier 300. It is not supplied. In addition, as described above, the intrusion of air that causes germs breeding is blocked from the purified water discharge port 14 into the purified water discharge passage 23 and the connection hose 310.

(When clean water is discharged)
The state in which the water purifier discharge is performed in the water purifier switching cock 100 is shown in FIG. 8 and FIG. 11, and the switching handle 50 is rotated in a state of protruding upward as shown in FIG. . The first ball valve body 41 and the second ball valve body 42 close the normal valve seat 31 and the shower valve seat 32 by their own weights, and the third ball valve body 43 is formed in the clean water discharge passage 23. The water is lifted from the water purification valve seat 33 by a certain third lifting portion 26 to open the water purification outlet 14.

Therefore, in this case, the raw water of the faucet 210 supplied from the raw water inlet 11 passes through the metering tap 12a of the raw water supply inlet 12 and is supplied into the water purifier 300, and the raw water in the water purifier 300 is supplied. Purification is performed, and the water is returned to the water purifier switching cock 100 through the connection hose 310. And since the purified water discharge port 14 is open | released, the purified water from the water purifier 300 is discharged from this purified water discharge port 14. FIG.

As described above, in the water purifier switching cock 100 according to this embodiment, the normal water valve outlet 31, the normal water outlet 15, and the shower port 16 are selectively opened and closed by the normal valve seat 31, the shower valve seat 32, and the purified water. Since each of the first ball valve body 41, the second ball valve body 42, and the third ball valve body 43 is lifted on the valve seat 33 and placed by its own weight, for example, the cock body 10 and the switching rotator are used. Compared with opening / closing by sliding contact with 20, the seal structure can be simplified, the structure can be simplified, and the durability can be improved.

Further, in the water purifier switching cock 100, the purified water discharge port 14 is opened downward, the purified water valve seat 33 is horizontal, and the opening and closing of the valve port 33a of the purified water valve seat 33 is described above. Since it is performed by the third ball valve body 43, it is possible to block the intrusion of air when the purified water is not discharged.

100 Water Purifier Switching Cock 10 Cock Main Body 10a Storage Space 11 Raw Water Port 12 Raw Water Supply Port 12a Metering Tap 13 Purified Water Inlet 14 Purified Water Discharge Port 15 Normal Discharge Port 15a Rectifier Bracket 16 Shower Port 20 Switching Rotor 21 Normal Discharge Passage 22 Shower Discharge passage 23 Purified water discharge passage 24 First lifting portion 25 Second lifting portion 26 Third lifting portion 27 Packing 31 Normal valve seat 31a Valve port 32 Shower valve seat 32a Valve port 33 Water purification valve seat 33a Valve port 41 First ball valve 42 Second ball valve body 43 Third ball valve body 50 Switching handle 60 Mounting tool 70 Pressure adjusting valve body 71 Base part 72 Annular plate part 73 Annular inclined part 73a Tip part 74 Through hole 200 Faucet 210 Faucet 300 Water purifier 310 Connection hose

Claims (1)

The switching rotor 20 is stored in a storage space 10a of the cock body 10 in a rotatable and liquid-tight manner, and the switching rotor 20 is rotated by operating the switching handle 50, whereby raw water from the cock body 10 is supplied. A water purification cock 100 that can selectively perform normal discharge, shower discharge or water discharge,
The raw water inlet 11 connected to the faucet 210 or the like of the water tap, the raw water supply inlet 12 and the purified water inlet 13 respectively connected to the water supply inlet and the purified water outlet on the water purifier 300 side, and the purified water inlet 13 And a normal water discharge port 15 located near the raw water port 11, and a shower port 16 located around the normal water discharge port 15,
The switching rotor 20 includes a normal discharge passage 21 that selectively communicates the raw water port 11 and the normal discharge port 15, a shower discharge passage 22 that selectively communicates the raw water port 11 and the shower port 16, and a purified water inlet. 13 and a purified water discharge passage 23 for selectively communicating with the purified water discharge port 14 in the circumferential direction,
Further, the base body 71 is accommodated in the raw water port 11 of the cock body 10 so as to be shrinkable in a direction orthogonal to the flow path of the raw water port 11, and a base part 71 serving as a wall parallel to the flow path is provided. An annular plate portion 72 that is integrated on the secondary side, an annular inclined portion 73 that is integrated with the inner end of the annular plate portion 72 and the tip 73a is inclined toward the primary side of the flow path, and the annular inclined portion 73. The water purifier switching cock 100 is provided with a pressure regulating valve 70 configured by a through hole 74 formed on the tip 73a side of the water purifier.

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